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qeth_main.c

/*
 * linux/drivers/s390/net/qeth_main.c
 *
 * Linux on zSeries OSA Express and HiperSockets support
 *
 * Copyright 2000,2003 IBM Corporation
 *
 *    Author(s): Original Code written by
 *                  Utz Bacher (utz.bacher@de.ibm.com)
 *           Rewritten by
 *                  Frank Pavlic (fpavlic@de.ibm.com) and
 *                  Thomas Spatzier <tspat@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.      See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/ip.h>
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/tcp.h>
#include <linux/icmp.h>
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/igmp.h>
#include <linux/init.h>
#include <linux/reboot.h>
#include <linux/mii.h>
#include <linux/rcupdate.h>
#include <linux/ethtool.h>

#include <net/arp.h>
#include <net/ip.h>
#include <net/route.h>

#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/qeth.h>
#include <asm/timex.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <asm/s390_rdev.h>

#include "qeth.h"
#include "qeth_mpc.h"
#include "qeth_fs.h"
#include "qeth_eddp.h"
#include "qeth_tso.h"

static const char *version = "qeth S/390 OSA-Express driver";

/**
 * Debug Facility Stuff
 */
static debug_info_t *qeth_dbf_setup = NULL;
static debug_info_t *qeth_dbf_data = NULL;
static debug_info_t *qeth_dbf_misc = NULL;
static debug_info_t *qeth_dbf_control = NULL;
debug_info_t *qeth_dbf_trace = NULL;
static debug_info_t *qeth_dbf_sense = NULL;
static debug_info_t *qeth_dbf_qerr = NULL;

DEFINE_PER_CPU(char[256], qeth_dbf_txt_buf);

static struct lock_class_key qdio_out_skb_queue_key;

/**
 * some more definitions and declarations
 */
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;

/* list of our cards */
struct qeth_card_list_struct qeth_card_list;
/*process list want to be notified*/
spinlock_t qeth_notify_lock;
struct list_head qeth_notify_list;

static void qeth_send_control_data_cb(struct qeth_channel *,
                              struct qeth_cmd_buffer *);

/**
 * here we go with function implementation
 */
static void
qeth_init_qdio_info(struct qeth_card *card);

static int
qeth_init_qdio_queues(struct qeth_card *card);

static int
qeth_alloc_qdio_buffers(struct qeth_card *card);

static void
qeth_free_qdio_buffers(struct qeth_card *);

static void
qeth_clear_qdio_buffers(struct qeth_card *);

static void
qeth_clear_ip_list(struct qeth_card *, int, int);

static void
qeth_clear_ipacmd_list(struct qeth_card *);

static int
qeth_qdio_clear_card(struct qeth_card *, int);

static void
qeth_clear_working_pool_list(struct qeth_card *);

static void
qeth_clear_cmd_buffers(struct qeth_channel *);

static int
qeth_stop(struct net_device *);

static void
qeth_clear_ipato_list(struct qeth_card *);

static int
qeth_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);

static void
qeth_irq_tasklet(unsigned long);

static int
qeth_set_online(struct ccwgroup_device *);

static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode);

static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions);

static void
qeth_set_multicast_list(struct net_device *);

static void
qeth_setadp_promisc_mode(struct qeth_card *);

static int
qeth_hard_header_parse(const struct sk_buff *skb, unsigned char *haddr);

static void
qeth_notify_processes(void)
{
      /*notify all  registered processes */
      struct qeth_notify_list_struct *n_entry;

      QETH_DBF_TEXT(trace,3,"procnoti");
      spin_lock(&qeth_notify_lock);
      list_for_each_entry(n_entry, &qeth_notify_list, list) {
            send_sig(n_entry->signum, n_entry->task, 1);
      }
      spin_unlock(&qeth_notify_lock);

}
int
qeth_notifier_unregister(struct task_struct *p)
{
      struct qeth_notify_list_struct *n_entry, *tmp;

      QETH_DBF_TEXT(trace, 2, "notunreg");
      spin_lock(&qeth_notify_lock);
      list_for_each_entry_safe(n_entry, tmp, &qeth_notify_list, list) {
            if (n_entry->task == p) {
                  list_del(&n_entry->list);
                  kfree(n_entry);
                  goto out;
            }
      }
out:
      spin_unlock(&qeth_notify_lock);
      return 0;
}
int
qeth_notifier_register(struct task_struct *p, int signum)
{
      struct qeth_notify_list_struct *n_entry;

      /*check first if entry already exists*/
      spin_lock(&qeth_notify_lock);
      list_for_each_entry(n_entry, &qeth_notify_list, list) {
            if (n_entry->task == p) {
                  n_entry->signum = signum;
                  spin_unlock(&qeth_notify_lock);
                  return 0;
            }
      }
      spin_unlock(&qeth_notify_lock);

      n_entry = (struct qeth_notify_list_struct *)
            kmalloc(sizeof(struct qeth_notify_list_struct),GFP_KERNEL);
      if (!n_entry)
            return -ENOMEM;
      n_entry->task = p;
      n_entry->signum = signum;
      spin_lock(&qeth_notify_lock);
      list_add(&n_entry->list,&qeth_notify_list);
      spin_unlock(&qeth_notify_lock);
      return 0;
}


/**
 * free channel command buffers
 */
static void
qeth_clean_channel(struct qeth_channel *channel)
{
      int cnt;

      QETH_DBF_TEXT(setup, 2, "freech");
      for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
            kfree(channel->iob[cnt].data);
}

/**
 * free card
 */
static void
qeth_free_card(struct qeth_card *card)
{

      QETH_DBF_TEXT(setup, 2, "freecrd");
      QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
      qeth_clean_channel(&card->read);
      qeth_clean_channel(&card->write);
      if (card->dev)
            free_netdev(card->dev);
      qeth_clear_ip_list(card, 0, 0);
      qeth_clear_ipato_list(card);
      kfree(card->ip_tbd_list);
      qeth_free_qdio_buffers(card);
      kfree(card);
}

/**
 * alloc memory for command buffer per channel
 */
static int
qeth_setup_channel(struct qeth_channel *channel)
{
      int cnt;

      QETH_DBF_TEXT(setup, 2, "setupch");
      for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
            channel->iob[cnt].data = (char *)
                  kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
            if (channel->iob[cnt].data == NULL)
                  break;
            channel->iob[cnt].state = BUF_STATE_FREE;
            channel->iob[cnt].channel = channel;
            channel->iob[cnt].callback = qeth_send_control_data_cb;
            channel->iob[cnt].rc = 0;
      }
      if (cnt < QETH_CMD_BUFFER_NO) {
            while (cnt-- > 0)
                  kfree(channel->iob[cnt].data);
            return -ENOMEM;
      }
      channel->buf_no = 0;
      channel->io_buf_no = 0;
      atomic_set(&channel->irq_pending, 0);
      spin_lock_init(&channel->iob_lock);

      init_waitqueue_head(&channel->wait_q);
      channel->irq_tasklet.data = (unsigned long) channel;
      channel->irq_tasklet.func = qeth_irq_tasklet;
      return 0;
}

/**
 * alloc memory for card structure
 */
static struct qeth_card *
qeth_alloc_card(void)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(setup, 2, "alloccrd");
      card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
      if (!card)
            return NULL;
      QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
      if (qeth_setup_channel(&card->read)) {
            kfree(card);
            return NULL;
      }
      if (qeth_setup_channel(&card->write)) {
            qeth_clean_channel(&card->read);
            kfree(card);
            return NULL;
      }
      return card;
}

static long
__qeth_check_irb_error(struct ccw_device *cdev, unsigned long intparm,
                   struct irb *irb)
{
      if (!IS_ERR(irb))
            return 0;

      switch (PTR_ERR(irb)) {
      case -EIO:
            PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
            QETH_DBF_TEXT(trace, 2, "ckirberr");
            QETH_DBF_TEXT_(trace, 2, "  rc%d", -EIO);
            break;
      case -ETIMEDOUT:
            PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
            QETH_DBF_TEXT(trace, 2, "ckirberr");
            QETH_DBF_TEXT_(trace, 2, "  rc%d", -ETIMEDOUT);
            if (intparm == QETH_RCD_PARM) {
                  struct qeth_card *card = CARD_FROM_CDEV(cdev);

                  if (card && (card->data.ccwdev == cdev)) {
                        card->data.state = CH_STATE_DOWN;
                        wake_up(&card->wait_q);
                  }
            }
            break;
      default:
            PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
                     cdev->dev.bus_id);
            QETH_DBF_TEXT(trace, 2, "ckirberr");
            QETH_DBF_TEXT(trace, 2, "  rc???");
      }
      return PTR_ERR(irb);
}

static int
qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
      int dstat,cstat;
      char *sense;

      sense = (char *) irb->ecw;
      cstat = irb->scsw.cstat;
      dstat = irb->scsw.dstat;

      if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
                 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
                 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
            QETH_DBF_TEXT(trace,2, "CGENCHK");
            PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
                     cdev->dev.bus_id, dstat, cstat);
            HEXDUMP16(WARN, "irb: ", irb);
            HEXDUMP16(WARN, "irb: ", ((char *) irb) + 32);
            return 1;
      }

      if (dstat & DEV_STAT_UNIT_CHECK) {
            if (sense[SENSE_RESETTING_EVENT_BYTE] &
                SENSE_RESETTING_EVENT_FLAG) {
                  QETH_DBF_TEXT(trace,2,"REVIND");
                  return 1;
            }
            if (sense[SENSE_COMMAND_REJECT_BYTE] &
                SENSE_COMMAND_REJECT_FLAG) {
                  QETH_DBF_TEXT(trace,2,"CMDREJi");
                  return 0;
            }
            if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
                  QETH_DBF_TEXT(trace,2,"AFFE");
                  return 1;
            }
            if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
                  QETH_DBF_TEXT(trace,2,"ZEROSEN");
                  return 0;
            }
            QETH_DBF_TEXT(trace,2,"DGENCHK");
                  return 1;
      }
      return 0;
}
static int qeth_issue_next_read(struct qeth_card *);

/**
 * interrupt handler
 */
static void
qeth_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
{
      int rc;
      int cstat,dstat;
      struct qeth_cmd_buffer *buffer;
      struct qeth_channel *channel;
      struct qeth_card *card;

      QETH_DBF_TEXT(trace,5,"irq");

      if (__qeth_check_irb_error(cdev, intparm, irb))
            return;
      cstat = irb->scsw.cstat;
      dstat = irb->scsw.dstat;

      card = CARD_FROM_CDEV(cdev);
      if (!card)
            return;

      if (card->read.ccwdev == cdev){
            channel = &card->read;
            QETH_DBF_TEXT(trace,5,"read");
      } else if (card->write.ccwdev == cdev) {
            channel = &card->write;
            QETH_DBF_TEXT(trace,5,"write");
      } else {
            channel = &card->data;
            QETH_DBF_TEXT(trace,5,"data");
      }
      atomic_set(&channel->irq_pending, 0);

      if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
            channel->state = CH_STATE_STOPPED;

      if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
            channel->state = CH_STATE_HALTED;

      /*let's wake up immediately on data channel*/
      if ((channel == &card->data) && (intparm != 0) &&
          (intparm != QETH_RCD_PARM))
            goto out;

      if (intparm == QETH_CLEAR_CHANNEL_PARM) {
            QETH_DBF_TEXT(trace, 6, "clrchpar");
            /* we don't have to handle this further */
            intparm = 0;
      }
      if (intparm == QETH_HALT_CHANNEL_PARM) {
            QETH_DBF_TEXT(trace, 6, "hltchpar");
            /* we don't have to handle this further */
            intparm = 0;
      }
      if ((dstat & DEV_STAT_UNIT_EXCEP) ||
          (dstat & DEV_STAT_UNIT_CHECK) ||
          (cstat)) {
            if (irb->esw.esw0.erw.cons) {
                  /* TODO: we should make this s390dbf */
                  PRINT_WARN("sense data available on channel %s.\n",
                           CHANNEL_ID(channel));
                  PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
                  HEXDUMP16(WARN,"irb: ",irb);
                  HEXDUMP16(WARN,"sense data: ",irb->ecw);
            }
            if (intparm == QETH_RCD_PARM) {
                  channel->state = CH_STATE_DOWN;
                  goto out;
            }
            rc = qeth_get_problem(cdev,irb);
            if (rc) {
                  qeth_schedule_recovery(card);
                  goto out;
            }
      }

      if (intparm == QETH_RCD_PARM) {
            channel->state = CH_STATE_RCD_DONE;
            goto out;
      }
      if (intparm) {
            buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
            buffer->state = BUF_STATE_PROCESSED;
      }
      if (channel == &card->data)
            return;

      if (channel == &card->read &&
          channel->state == CH_STATE_UP)
            qeth_issue_next_read(card);

      qeth_irq_tasklet((unsigned long)channel);
      return;
out:
      wake_up(&card->wait_q);
}

/**
 * tasklet function scheduled from irq handler
 */
static void
qeth_irq_tasklet(unsigned long data)
{
      struct qeth_card *card;
      struct qeth_channel *channel;
      struct qeth_cmd_buffer *iob;
      __u8 index;

      QETH_DBF_TEXT(trace,5,"irqtlet");
      channel = (struct qeth_channel *) data;
      iob = channel->iob;
      index = channel->buf_no;
      card = CARD_FROM_CDEV(channel->ccwdev);
      while (iob[index].state == BUF_STATE_PROCESSED) {
            if (iob[index].callback !=NULL) {
                  iob[index].callback(channel,iob + index);
            }
            index = (index + 1) % QETH_CMD_BUFFER_NO;
      }
      channel->buf_no = index;
      wake_up(&card->wait_q);
}

static int qeth_stop_card(struct qeth_card *, int);

static int
__qeth_set_offline(struct ccwgroup_device *cgdev, int recovery_mode)
{
      struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
      int rc = 0, rc2 = 0, rc3 = 0;
      enum qeth_card_states recover_flag;

      QETH_DBF_TEXT(setup, 3, "setoffl");
      QETH_DBF_HEX(setup, 3, &card, sizeof(void *));

      if (card->dev && netif_carrier_ok(card->dev))
            netif_carrier_off(card->dev);
      recover_flag = card->state;
      if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
            PRINT_WARN("Stopping card %s interrupted by user!\n",
                     CARD_BUS_ID(card));
            return -ERESTARTSYS;
      }
      rc  = ccw_device_set_offline(CARD_DDEV(card));
      rc2 = ccw_device_set_offline(CARD_WDEV(card));
      rc3 = ccw_device_set_offline(CARD_RDEV(card));
      if (!rc)
            rc = (rc2) ? rc2 : rc3;
      if (rc)
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
      if (recover_flag == CARD_STATE_UP)
            card->state = CARD_STATE_RECOVER;
      qeth_notify_processes();
      return 0;
}

static int
qeth_set_offline(struct ccwgroup_device *cgdev)
{
      return  __qeth_set_offline(cgdev, 0);
}

static int
qeth_threads_running(struct qeth_card *card, unsigned long threads);


static void
qeth_remove_device(struct ccwgroup_device *cgdev)
{
      struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
      unsigned long flags;

      QETH_DBF_TEXT(setup, 3, "rmdev");
      QETH_DBF_HEX(setup, 3, &card, sizeof(void *));

      if (!card)
            return;

      wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);

      if (cgdev->state == CCWGROUP_ONLINE){
            card->use_hard_stop = 1;
            qeth_set_offline(cgdev);
      }
      /* remove form our internal list */
      write_lock_irqsave(&qeth_card_list.rwlock, flags);
      list_del(&card->list);
      write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
      if (card->dev)
            unregister_netdev(card->dev);
      qeth_remove_device_attributes(&cgdev->dev);
      qeth_free_card(card);
      cgdev->dev.driver_data = NULL;
      put_device(&cgdev->dev);
}

static int
qeth_register_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
static int
qeth_deregister_addr_entry(struct qeth_card *, struct qeth_ipaddr *);

/**
 * Add/remove address to/from card's ip list, i.e. try to add or remove
 * reference to/from an IP address that is already registered on the card.
 * Returns:
 *    0  address was on card and its reference count has been adjusted,
 *       but is still > 0, so nothing has to be done
 *       also returns 0 if card was not on card and the todo was to delete
 *       the address -> there is also nothing to be done
 *    1  address was not on card and the todo is to add it to the card's ip
 *       list
 *    -1 address was on card and its reference count has been decremented
 *       to <= 0 by the todo -> address must be removed from card
 */
static int
__qeth_ref_ip_on_card(struct qeth_card *card, struct qeth_ipaddr *todo,
                  struct qeth_ipaddr **__addr)
{
      struct qeth_ipaddr *addr;
      int found = 0;

      list_for_each_entry(addr, &card->ip_list, entry) {
            if (card->options.layer2) {
                  if ((addr->type == todo->type) &&
                      (memcmp(&addr->mac, &todo->mac,
                            OSA_ADDR_LEN) == 0)) {
                        found = 1;
                        break;
                  }
                  continue;
            }
            if ((addr->proto     == QETH_PROT_IPV4)  &&
                (todo->proto     == QETH_PROT_IPV4)  &&
                (addr->type      == todo->type)      &&
                (addr->u.a4.addr == todo->u.a4.addr) &&
                (addr->u.a4.mask == todo->u.a4.mask)) {
                  found = 1;
                  break;
            }
            if ((addr->proto       == QETH_PROT_IPV6)     &&
                (todo->proto       == QETH_PROT_IPV6)     &&
                (addr->type        == todo->type)         &&
                (addr->u.a6.pfxlen == todo->u.a6.pfxlen)  &&
                (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
                      sizeof(struct in6_addr)) == 0)) {
                  found = 1;
                  break;
            }
      }
      if (found) {
            addr->users += todo->users;
            if (addr->users <= 0){
                  *__addr = addr;
                  return -1;
            } else {
                  /* for VIPA and RXIP limit refcount to 1 */
                  if (addr->type != QETH_IP_TYPE_NORMAL)
                        addr->users = 1;
                  return 0;
            }
      }
      if (todo->users > 0) {
            /* for VIPA and RXIP limit refcount to 1 */
            if (todo->type != QETH_IP_TYPE_NORMAL)
                  todo->users = 1;
            return 1;
      } else
            return 0;
}

static int
__qeth_address_exists_in_list(struct list_head *list, struct qeth_ipaddr *addr,
                          int same_type)
{
      struct qeth_ipaddr *tmp;

      list_for_each_entry(tmp, list, entry) {
            if ((tmp->proto     == QETH_PROT_IPV4)            &&
                (addr->proto    == QETH_PROT_IPV4)            &&
                ((same_type && (tmp->type == addr->type)) ||
                 (!same_type && (tmp->type != addr->type))  ) &&
                (tmp->u.a4.addr == addr->u.a4.addr)             ){
                  return 1;
            }
            if ((tmp->proto  == QETH_PROT_IPV6)               &&
                (addr->proto == QETH_PROT_IPV6)               &&
                ((same_type && (tmp->type == addr->type)) ||
                 (!same_type && (tmp->type != addr->type))  ) &&
                (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
                      sizeof(struct in6_addr)) == 0)          ) {
                  return 1;
            }
      }
      return 0;
}

/*
 * Add IP to be added to todo list. If there is already an "add todo"
 * in this list we just incremenent the reference count.
 * Returns 0 if we  just incremented reference count.
 */
static int
__qeth_insert_ip_todo(struct qeth_card *card, struct qeth_ipaddr *addr, int add)
{
      struct qeth_ipaddr *tmp, *t;
      int found = 0;

      list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
            if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
                (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
                  return 0;
            if (card->options.layer2) {
                  if ((tmp->type    == addr->type)    &&
                      (tmp->is_multicast == addr->is_multicast) &&
                      (memcmp(&tmp->mac, &addr->mac,
                            OSA_ADDR_LEN) == 0)) {
                        found = 1;
                        break;
                  }
                  continue;
            }
            if ((tmp->proto        == QETH_PROT_IPV4)     &&
                (addr->proto       == QETH_PROT_IPV4)     &&
                (tmp->type         == addr->type)         &&
                (tmp->is_multicast == addr->is_multicast) &&
                (tmp->u.a4.addr    == addr->u.a4.addr)    &&
                (tmp->u.a4.mask    == addr->u.a4.mask)) {
                  found = 1;
                  break;
            }
            if ((tmp->proto        == QETH_PROT_IPV6)      &&
                (addr->proto       == QETH_PROT_IPV6)      &&
                (tmp->type         == addr->type)          &&
                (tmp->is_multicast == addr->is_multicast)  &&
                (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
                (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
                      sizeof(struct in6_addr)) == 0)) {
                  found = 1;
                  break;
            }
      }
      if (found){
            if (addr->users != 0)
                  tmp->users += addr->users;
            else
                  tmp->users += add? 1:-1;
            if (tmp->users == 0) {
                  list_del(&tmp->entry);
                  kfree(tmp);
            }
            return 0;
      } else {
            if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
                  list_add(&addr->entry, card->ip_tbd_list);
            else {
                  if (addr->users == 0)
                        addr->users += add? 1:-1;
                  if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
                      qeth_is_addr_covered_by_ipato(card, addr)){
                        QETH_DBF_TEXT(trace, 2, "tkovaddr");
                        addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
                  }
                  list_add_tail(&addr->entry, card->ip_tbd_list);
            }
            return 1;
      }
}

/**
 * Remove IP address from list
 */
static int
qeth_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
      unsigned long flags;
      int rc = 0;

      QETH_DBF_TEXT(trace, 4, "delip");

      if (card->options.layer2)
            QETH_DBF_HEX(trace, 4, &addr->mac, 6);
      else if (addr->proto == QETH_PROT_IPV4)
            QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
      else {
            QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
            QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
      }
      spin_lock_irqsave(&card->ip_lock, flags);
      rc = __qeth_insert_ip_todo(card, addr, 0);
      spin_unlock_irqrestore(&card->ip_lock, flags);
      return rc;
}

static int
qeth_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
      unsigned long flags;
      int rc = 0;

      QETH_DBF_TEXT(trace, 4, "addip");
      if (card->options.layer2)
            QETH_DBF_HEX(trace, 4, &addr->mac, 6);
      else if (addr->proto == QETH_PROT_IPV4)
            QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
      else {
            QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
            QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
      }
      spin_lock_irqsave(&card->ip_lock, flags);
      rc = __qeth_insert_ip_todo(card, addr, 1);
      spin_unlock_irqrestore(&card->ip_lock, flags);
      return rc;
}

static void
__qeth_delete_all_mc(struct qeth_card *card, unsigned long *flags)
{
      struct qeth_ipaddr *addr, *tmp;
      int rc;
again:
      list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
            if (addr->is_multicast) {
                  list_del(&addr->entry);
                  spin_unlock_irqrestore(&card->ip_lock, *flags);
                  rc = qeth_deregister_addr_entry(card, addr);
                  spin_lock_irqsave(&card->ip_lock, *flags);
                  if (!rc) {
                        kfree(addr);
                        goto again;
                  } else
                        list_add(&addr->entry, &card->ip_list);
            }
      }
}

static void
qeth_set_ip_addr_list(struct qeth_card *card)
{
      struct list_head *tbd_list;
      struct qeth_ipaddr *todo, *addr;
      unsigned long flags;
      int rc;

      QETH_DBF_TEXT(trace, 2, "sdiplist");
      QETH_DBF_HEX(trace, 2, &card, sizeof(void *));

      spin_lock_irqsave(&card->ip_lock, flags);
      tbd_list = card->ip_tbd_list;
      card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
      if (!card->ip_tbd_list) {
            QETH_DBF_TEXT(trace, 0, "silnomem");
            card->ip_tbd_list = tbd_list;
            spin_unlock_irqrestore(&card->ip_lock, flags);
            return;
      } else
            INIT_LIST_HEAD(card->ip_tbd_list);

      while (!list_empty(tbd_list)){
            todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
            list_del(&todo->entry);
            if (todo->type == QETH_IP_TYPE_DEL_ALL_MC){
                  __qeth_delete_all_mc(card, &flags);
                  kfree(todo);
                  continue;
            }
            rc = __qeth_ref_ip_on_card(card, todo, &addr);
            if (rc == 0) {
                  /* nothing to be done; only adjusted refcount */
                  kfree(todo);
            } else if (rc == 1) {
                  /* new entry to be added to on-card list */
                  spin_unlock_irqrestore(&card->ip_lock, flags);
                  rc = qeth_register_addr_entry(card, todo);
                  spin_lock_irqsave(&card->ip_lock, flags);
                  if (!rc)
                        list_add_tail(&todo->entry, &card->ip_list);
                  else
                        kfree(todo);
            } else if (rc == -1) {
                  /* on-card entry to be removed */
                  list_del_init(&addr->entry);
                  spin_unlock_irqrestore(&card->ip_lock, flags);
                  rc = qeth_deregister_addr_entry(card, addr);
                  spin_lock_irqsave(&card->ip_lock, flags);
                  if (!rc)
                        kfree(addr);
                  else
                        list_add_tail(&addr->entry, &card->ip_list);
                  kfree(todo);
            }
      }
      spin_unlock_irqrestore(&card->ip_lock, flags);
      kfree(tbd_list);
}

static void qeth_delete_mc_addresses(struct qeth_card *);
static void qeth_add_multicast_ipv4(struct qeth_card *);
static void qeth_layer2_add_multicast(struct qeth_card *);
#ifdef CONFIG_QETH_IPV6
static void qeth_add_multicast_ipv6(struct qeth_card *);
#endif

static int
qeth_set_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      if ( !(card->thread_allowed_mask & thread) ||
            (card->thread_start_mask & thread) ) {
            spin_unlock_irqrestore(&card->thread_mask_lock, flags);
            return -EPERM;
      }
      card->thread_start_mask |= thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return 0;
}

static void
qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_start_mask &= ~thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}

static void
qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_running_mask &= ~thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}

static int
__qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      if (card->thread_start_mask & thread){
            if ((card->thread_allowed_mask & thread) &&
                !(card->thread_running_mask & thread)){
                  rc = 1;
                  card->thread_start_mask &= ~thread;
                  card->thread_running_mask |= thread;
            } else
                  rc = -EPERM;
      }
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}

static int
qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
      int rc = 0;

      wait_event(card->wait_q,
               (rc = __qeth_do_run_thread(card, thread)) >= 0);
      return rc;
}

static int
qeth_recover(void *ptr)
{
      struct qeth_card *card;
      int rc = 0;

      card = (struct qeth_card *) ptr;
      daemonize("qeth_recover");
      QETH_DBF_TEXT(trace,2,"recover1");
      QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
      if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
            return 0;
      QETH_DBF_TEXT(trace,2,"recover2");
      PRINT_WARN("Recovery of device %s started ...\n",
               CARD_BUS_ID(card));
      card->use_hard_stop = 1;
      __qeth_set_offline(card->gdev,1);
      rc = __qeth_set_online(card->gdev,1);
      /* don't run another scheduled recovery */
      qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
      qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
      if (!rc)
            PRINT_INFO("Device %s successfully recovered!\n",
                     CARD_BUS_ID(card));
      else
            PRINT_INFO("Device %s could not be recovered!\n",
                     CARD_BUS_ID(card));
      return 0;
}

void
qeth_schedule_recovery(struct qeth_card *card)
{
      QETH_DBF_TEXT(trace,2,"startrec");
      if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
            schedule_work(&card->kernel_thread_starter);
}

static int
qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      QETH_DBF_TEXT_(trace, 4, "  %02x%02x%02x",
                  (u8) card->thread_start_mask,
                  (u8) card->thread_allowed_mask,
                  (u8) card->thread_running_mask);
      rc = (card->thread_start_mask & thread);
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}

static void
qeth_start_kernel_thread(struct work_struct *work)
{
      struct qeth_card *card = container_of(work, struct qeth_card, kernel_thread_starter);
      QETH_DBF_TEXT(trace , 2, "strthrd");

      if (card->read.state != CH_STATE_UP &&
          card->write.state != CH_STATE_UP)
            return;
      if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
            kernel_thread(qeth_recover, (void *) card, SIGCHLD);
}


static void
qeth_set_intial_options(struct qeth_card *card)
{
      card->options.route4.type = NO_ROUTER;
#ifdef CONFIG_QETH_IPV6
      card->options.route6.type = NO_ROUTER;
#endif /* QETH_IPV6 */
      card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
      card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
      card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
      card->options.fake_broadcast = 0;
      card->options.add_hhlen = DEFAULT_ADD_HHLEN;
      card->options.fake_ll = 0;
      if (card->info.type == QETH_CARD_TYPE_OSN)
            card->options.layer2 = 1;
      else
            card->options.layer2 = 0;
      card->options.performance_stats = 0;
      card->options.rx_sg_cb = QETH_RX_SG_CB;
}

/**
 * initialize channels ,card and all state machines
 */
static int
qeth_setup_card(struct qeth_card *card)
{

      QETH_DBF_TEXT(setup, 2, "setupcrd");
      QETH_DBF_HEX(setup, 2, &card, sizeof(void *));

      card->read.state  = CH_STATE_DOWN;
      card->write.state = CH_STATE_DOWN;
      card->data.state  = CH_STATE_DOWN;
      card->state = CARD_STATE_DOWN;
      card->lan_online = 0;
      card->use_hard_stop = 0;
      card->dev = NULL;
#ifdef CONFIG_QETH_VLAN
      spin_lock_init(&card->vlanlock);
      card->vlangrp = NULL;
#endif
      spin_lock_init(&card->lock);
      spin_lock_init(&card->ip_lock);
      spin_lock_init(&card->thread_mask_lock);
      card->thread_start_mask = 0;
      card->thread_allowed_mask = 0;
      card->thread_running_mask = 0;
      INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
      INIT_LIST_HEAD(&card->ip_list);
      card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
      if (!card->ip_tbd_list) {
            QETH_DBF_TEXT(setup, 0, "iptbdnom");
            return -ENOMEM;
      }
      INIT_LIST_HEAD(card->ip_tbd_list);
      INIT_LIST_HEAD(&card->cmd_waiter_list);
      init_waitqueue_head(&card->wait_q);
      /* intial options */
      qeth_set_intial_options(card);
      /* IP address takeover */
      INIT_LIST_HEAD(&card->ipato.entries);
      card->ipato.enabled = 0;
      card->ipato.invert4 = 0;
      card->ipato.invert6 = 0;
      /* init QDIO stuff */
      qeth_init_qdio_info(card);
      return 0;
}

static int
is_1920_device (struct qeth_card *card)
{
      int single_queue = 0;
      struct ccw_device *ccwdev;
      struct channelPath_dsc {
            u8 flags;
            u8 lsn;
            u8 desc;
            u8 chpid;
            u8 swla;
            u8 zeroes;
            u8 chla;
            u8 chpp;
      } *chp_dsc;

      QETH_DBF_TEXT(setup, 2, "chk_1920");

      ccwdev = card->data.ccwdev;
      chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
      if (chp_dsc != NULL) {
            /* CHPP field bit 6 == 1 -> single queue */
            single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
            kfree(chp_dsc);
      }
      QETH_DBF_TEXT_(setup, 2, "rc:%x", single_queue);
      return single_queue;
}

static int
qeth_determine_card_type(struct qeth_card *card)
{
      int i = 0;

      QETH_DBF_TEXT(setup, 2, "detcdtyp");

      card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
      card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
      while (known_devices[i][4]) {
            if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
                (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
                  card->info.type = known_devices[i][4];
                  card->qdio.no_out_queues = known_devices[i][8];
                  card->info.is_multicast_different = known_devices[i][9];
                  if (is_1920_device(card)) {
                        PRINT_INFO("Priority Queueing not able "
                                 "due to hardware limitations!\n");
                        card->qdio.no_out_queues = 1;
                        card->qdio.default_out_queue = 0;
                  }
                  return 0;
            }
            i++;
      }
      card->info.type = QETH_CARD_TYPE_UNKNOWN;
      PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
      return -ENOENT;
}

static int
qeth_probe_device(struct ccwgroup_device *gdev)
{
      struct qeth_card *card;
      struct device *dev;
      unsigned long flags;
      int rc;

      QETH_DBF_TEXT(setup, 2, "probedev");

      dev = &gdev->dev;
      if (!get_device(dev))
            return -ENODEV;

      QETH_DBF_TEXT_(setup, 2, "%s", gdev->dev.bus_id);

      card = qeth_alloc_card();
      if (!card) {
            put_device(dev);
            QETH_DBF_TEXT_(setup, 2, "1err%d", -ENOMEM);
            return -ENOMEM;
      }
      card->read.ccwdev  = gdev->cdev[0];
      card->write.ccwdev = gdev->cdev[1];
      card->data.ccwdev  = gdev->cdev[2];
      gdev->dev.driver_data = card;
      card->gdev = gdev;
      gdev->cdev[0]->handler = qeth_irq;
      gdev->cdev[1]->handler = qeth_irq;
      gdev->cdev[2]->handler = qeth_irq;

      if ((rc = qeth_determine_card_type(card))){
            PRINT_WARN("%s: not a valid card type\n", __func__);
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
            put_device(dev);
            qeth_free_card(card);
            return rc;
      }
      if ((rc = qeth_setup_card(card))){
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            put_device(dev);
            qeth_free_card(card);
            return rc;
      }
      rc = qeth_create_device_attributes(dev);
      if (rc) {
            put_device(dev);
            qeth_free_card(card);
            return rc;
      }
      /* insert into our internal list */
      write_lock_irqsave(&qeth_card_list.rwlock, flags);
      list_add_tail(&card->list, &qeth_card_list.list);
      write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
      return rc;
}


static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
                         int *length)
{
      struct ciw *ciw;
      char *rcd_buf;
      int ret;
      struct qeth_channel *channel = &card->data;
      unsigned long flags;

      /*
       * scan for RCD command in extended SenseID data
       */
      ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
      if (!ciw || ciw->cmd == 0)
            return -EOPNOTSUPP;
      rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
      if (!rcd_buf)
            return -ENOMEM;

      channel->ccw.cmd_code = ciw->cmd;
      channel->ccw.cda = (__u32) __pa (rcd_buf);
      channel->ccw.count = ciw->count;
      channel->ccw.flags = CCW_FLAG_SLI;
      channel->state = CH_STATE_RCD;
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
                               QETH_RCD_PARM, LPM_ANYPATH, 0,
                               QETH_RCD_TIMEOUT);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
      if (!ret)
            wait_event(card->wait_q,
                     (channel->state == CH_STATE_RCD_DONE ||
                      channel->state == CH_STATE_DOWN));
      if (channel->state == CH_STATE_DOWN)
            ret = -EIO;
      else
            channel->state = CH_STATE_DOWN;
      if (ret) {
            kfree(rcd_buf);
            *buffer = NULL;
            *length = 0;
      } else {
            *length = ciw->count;
            *buffer = rcd_buf;
      }
      return ret;
}

static int
qeth_get_unitaddr(struct qeth_card *card)
{
      int length;
      char *prcd;
      int rc;

      QETH_DBF_TEXT(setup, 2, "getunit");
      rc = qeth_read_conf_data(card, (void **) &prcd, &length);
      if (rc) {
            PRINT_ERR("qeth_read_conf_data for device %s returned %i\n",
                    CARD_DDEV_ID(card), rc);
            return rc;
      }
      card->info.chpid = prcd[30];
      card->info.unit_addr2 = prcd[31];
      card->info.cula = prcd[63];
      card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
                         (prcd[0x11] == _ascebc['M']));
      kfree(prcd);
      return 0;
}

static void
qeth_init_tokens(struct qeth_card *card)
{
      card->token.issuer_rm_w = 0x00010103UL;
      card->token.cm_filter_w = 0x00010108UL;
      card->token.cm_connection_w = 0x0001010aUL;
      card->token.ulp_filter_w = 0x0001010bUL;
      card->token.ulp_connection_w = 0x0001010dUL;
}

static inline __u16
raw_devno_from_bus_id(char *id)
{
        id += (strlen(id) - 4);
        return (__u16) simple_strtoul(id, &id, 16);
}
/**
 * setup channel
 */
static void
qeth_setup_ccw(struct qeth_channel *channel,unsigned char *iob, __u32 len)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(trace, 4, "setupccw");
      card = CARD_FROM_CDEV(channel->ccwdev);
      if (channel == &card->read)
            memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
      else
            memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
      channel->ccw.count = len;
      channel->ccw.cda = (__u32) __pa(iob);
}

/**
 * get free buffer for ccws (IDX activation, lancmds,ipassists...)
 */
static struct qeth_cmd_buffer *
__qeth_get_buffer(struct qeth_channel *channel)
{
      __u8 index;

      QETH_DBF_TEXT(trace, 6, "getbuff");
      index = channel->io_buf_no;
      do {
            if (channel->iob[index].state == BUF_STATE_FREE) {
                  channel->iob[index].state = BUF_STATE_LOCKED;
                  channel->io_buf_no = (channel->io_buf_no + 1) %
                        QETH_CMD_BUFFER_NO;
                  memset(channel->iob[index].data, 0, QETH_BUFSIZE);
                  return channel->iob + index;
            }
            index = (index + 1) % QETH_CMD_BUFFER_NO;
      } while(index != channel->io_buf_no);

      return NULL;
}

/**
 * release command buffer
 */
static void
qeth_release_buffer(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
      unsigned long flags;

      QETH_DBF_TEXT(trace, 6, "relbuff");
      spin_lock_irqsave(&channel->iob_lock, flags);
      memset(iob->data, 0, QETH_BUFSIZE);
      iob->state = BUF_STATE_FREE;
      iob->callback = qeth_send_control_data_cb;
      iob->rc = 0;
      spin_unlock_irqrestore(&channel->iob_lock, flags);
}

static struct qeth_cmd_buffer *
qeth_get_buffer(struct qeth_channel *channel)
{
      struct qeth_cmd_buffer *buffer = NULL;
      unsigned long flags;

      spin_lock_irqsave(&channel->iob_lock, flags);
      buffer = __qeth_get_buffer(channel);
      spin_unlock_irqrestore(&channel->iob_lock, flags);
      return buffer;
}

static struct qeth_cmd_buffer *
qeth_wait_for_buffer(struct qeth_channel *channel)
{
      struct qeth_cmd_buffer *buffer;
      wait_event(channel->wait_q,
               ((buffer = qeth_get_buffer(channel)) != NULL));
      return buffer;
}

static void
qeth_clear_cmd_buffers(struct qeth_channel *channel)
{
      int cnt;

      for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++)
            qeth_release_buffer(channel,&channel->iob[cnt]);
      channel->buf_no = 0;
      channel->io_buf_no = 0;
}

/**
 * start IDX for read and write channel
 */
static int
qeth_idx_activate_get_answer(struct qeth_channel *channel,
                        void (*idx_reply_cb)(struct qeth_channel *,
                                       struct qeth_cmd_buffer *))
{
      struct qeth_cmd_buffer *iob;
      unsigned long flags;
      int rc;
      struct qeth_card *card;

      QETH_DBF_TEXT(setup, 2, "idxanswr");
      card = CARD_FROM_CDEV(channel->ccwdev);
      iob = qeth_get_buffer(channel);
      iob->callback = idx_reply_cb;
      memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
      channel->ccw.count = QETH_BUFSIZE;
      channel->ccw.cda = (__u32) __pa(iob->data);

      wait_event(card->wait_q,
               atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
      QETH_DBF_TEXT(setup, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_start(channel->ccwdev,
                        &channel->ccw,(addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc) {
            PRINT_ERR("qeth: Error2 in activating channel rc=%d\n",rc);
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            atomic_set(&channel->irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }
      rc = wait_event_interruptible_timeout(card->wait_q,
                   channel->state == CH_STATE_UP, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_UP){
            rc = -ETIME;
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
            qeth_clear_cmd_buffers(channel);
      } else
            rc = 0;
      return rc;
}

static int
qeth_idx_activate_channel(struct qeth_channel *channel,
                     void (*idx_reply_cb)(struct qeth_channel *,
                                    struct qeth_cmd_buffer *))
{
      struct qeth_card *card;
      struct qeth_cmd_buffer *iob;
      unsigned long flags;
      __u16 temp;
      int rc;

      card = CARD_FROM_CDEV(channel->ccwdev);

      QETH_DBF_TEXT(setup, 2, "idxactch");

      iob = qeth_get_buffer(channel);
      iob->callback = idx_reply_cb;
      memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
      channel->ccw.count = IDX_ACTIVATE_SIZE;
      channel->ccw.cda = (__u32) __pa(iob->data);
      if (channel == &card->write) {
            memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
            memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
                   &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
            card->seqno.trans_hdr++;
      } else {
            memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
            memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
                   &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
      }
      memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
             &card->token.issuer_rm_w,QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
             &card->info.func_level,sizeof(__u16));
      temp = raw_devno_from_bus_id(CARD_DDEV_ID(card));
      memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
      temp = (card->info.cula << 8) + card->info.unit_addr2;
      memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);

      wait_event(card->wait_q,
               atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
      QETH_DBF_TEXT(setup, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_start(channel->ccwdev,
                        &channel->ccw,(addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc) {
            PRINT_ERR("qeth: Error1 in activating channel. rc=%d\n",rc);
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            atomic_set(&channel->irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_ACTIVATING) {
            PRINT_WARN("qeth: IDX activate timed out!\n");
            QETH_DBF_TEXT_(setup, 2, "2err%d", -ETIME);
            qeth_clear_cmd_buffers(channel);
            return -ETIME;
      }
      return qeth_idx_activate_get_answer(channel,idx_reply_cb);
}

static int
qeth_peer_func_level(int level)
{
      if ((level & 0xff) == 8)
            return (level & 0xff) + 0x400;
      if (((level >> 8) & 3) == 1)
            return (level & 0xff) + 0x200;
      return level;
}

static void
qeth_idx_write_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      __u16 temp;

      QETH_DBF_TEXT(setup ,2, "idxwrcb");

      if (channel->state == CH_STATE_DOWN) {
            channel->state = CH_STATE_ACTIVATING;
            goto out;
      }
      card = CARD_FROM_CDEV(channel->ccwdev);

      if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
            if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
                  PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
                        "adapter exclusively used by another host\n",
                        CARD_WDEV_ID(card));
            else
                  PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
                        "negative reply\n", CARD_WDEV_ID(card));
            goto out;
      }
      memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
      if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
            PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
                  "function level mismatch "
                  "(sent: 0x%x, received: 0x%x)\n",
                  CARD_WDEV_ID(card), card->info.func_level, temp);
            goto out;
      }
      channel->state = CH_STATE_UP;
out:
      qeth_release_buffer(channel, iob);
}

static int
qeth_check_idx_response(unsigned char *buffer)
{
      if (!buffer)
            return 0;

      QETH_DBF_HEX(control, 2, buffer, QETH_DBF_CONTROL_LEN);
      if ((buffer[2] & 0xc0) == 0xc0) {
            PRINT_WARN("received an IDX TERMINATE "
                     "with cause code 0x%02x%s\n",
                     buffer[4],
                     ((buffer[4] == 0x22) ?
                      " -- try another portname" : ""));
            QETH_DBF_TEXT(trace, 2, "ckidxres");
            QETH_DBF_TEXT(trace, 2, " idxterm");
            QETH_DBF_TEXT_(trace, 2, "  rc%d", -EIO);
            return -EIO;
      }
      return 0;
}

static void
qeth_idx_read_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      __u16 temp;

      QETH_DBF_TEXT(setup , 2, "idxrdcb");
      if (channel->state == CH_STATE_DOWN) {
            channel->state = CH_STATE_ACTIVATING;
            goto out;
      }

      card = CARD_FROM_CDEV(channel->ccwdev);
      if (qeth_check_idx_response(iob->data)) {
                  goto out;
      }
      if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
            if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
                  PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
                        "adapter exclusively used by another host\n",
                        CARD_RDEV_ID(card));
            else
                  PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
                        "negative reply\n", CARD_RDEV_ID(card));
            goto out;
      }

/**
 * temporary fix for microcode bug
 * to revert it,replace OR by AND
 */
      if ( (!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
           (card->info.type == QETH_CARD_TYPE_OSAE) )
            card->info.portname_required = 1;

      memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
      if (temp != qeth_peer_func_level(card->info.func_level)) {
            PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
                  "level mismatch (sent: 0x%x, received: 0x%x)\n",
                  CARD_RDEV_ID(card), card->info.func_level, temp);
            goto out;
      }
      memcpy(&card->token.issuer_rm_r,
             QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      memcpy(&card->info.mcl_level[0],
             QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
      channel->state = CH_STATE_UP;
out:
      qeth_release_buffer(channel,iob);
}

static int
qeth_issue_next_read(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace,5,"issnxrd");
      if (card->read.state != CH_STATE_UP)
            return -EIO;
      iob = qeth_get_buffer(&card->read);
      if (!iob) {
            PRINT_WARN("issue_next_read failed: no iob available!\n");
            return -ENOMEM;
      }
      qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
      QETH_DBF_TEXT(trace, 6, "noirqpnd");
      rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
                        (addr_t) iob, 0, 0);
      if (rc) {
            PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
            atomic_set(&card->read.irq_pending, 0);
            qeth_schedule_recovery(card);
            wake_up(&card->wait_q);
      }
      return rc;
}

static struct qeth_reply *
qeth_alloc_reply(struct qeth_card *card)
{
      struct qeth_reply *reply;

      reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
      if (reply){
            atomic_set(&reply->refcnt, 1);
            atomic_set(&reply->received, 0);
            reply->card = card;
      };
      return reply;
}

static void
qeth_get_reply(struct qeth_reply *reply)
{
      WARN_ON(atomic_read(&reply->refcnt) <= 0);
      atomic_inc(&reply->refcnt);
}

static void
qeth_put_reply(struct qeth_reply *reply)
{
      WARN_ON(atomic_read(&reply->refcnt) <= 0);
      if (atomic_dec_and_test(&reply->refcnt))
            kfree(reply);
}

static void
qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, struct qeth_card *card)
{
      int rc;
      int com;
      char * ipa_name;

      com = cmd->hdr.command;
      rc  = cmd->hdr.return_code;
      ipa_name = qeth_get_ipa_cmd_name(com);

      PRINT_ERR("%s(x%X) for %s returned x%X \"%s\"\n", ipa_name, com,
               QETH_CARD_IFNAME(card), rc, qeth_get_ipa_msg(rc));
}

static struct qeth_ipa_cmd *
qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
{
      struct qeth_ipa_cmd *cmd = NULL;

      QETH_DBF_TEXT(trace,5,"chkipad");
      if (IS_IPA(iob->data)){
            cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
            if (IS_IPA_REPLY(cmd)) {
                  if (cmd->hdr.return_code)
                        qeth_issue_ipa_msg(cmd, card);
                  return cmd;
            }
            else {
                  switch (cmd->hdr.command) {
                  case IPA_CMD_STOPLAN:
                        PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
                                 "there is a network problem or "
                                 "someone pulled the cable or "
                                 "disabled the port.\n",
                                 QETH_CARD_IFNAME(card),
                                 card->info.chpid);
                        card->lan_online = 0;
                        if (card->dev && netif_carrier_ok(card->dev))
                              netif_carrier_off(card->dev);
                        return NULL;
                  case IPA_CMD_STARTLAN:
                        PRINT_INFO("Link reestablished on %s "
                                 "(CHPID 0x%X). Scheduling "
                                 "IP address reset.\n",
                                 QETH_CARD_IFNAME(card),
                                 card->info.chpid);
                        netif_carrier_on(card->dev);
                        qeth_schedule_recovery(card);
                        return NULL;
                  case IPA_CMD_MODCCID:
                        return cmd;
                  case IPA_CMD_REGISTER_LOCAL_ADDR:
                        QETH_DBF_TEXT(trace,3, "irla");
                        break;
                  case IPA_CMD_UNREGISTER_LOCAL_ADDR:
                        QETH_DBF_TEXT(trace,3, "urla");
                        break;
                  default:
                        PRINT_WARN("Received data is IPA "
                                 "but not a reply!\n");
                        break;
                  }
            }
      }
      return cmd;
}

/**
 * wake all waiting ipa commands
 */
static void
qeth_clear_ipacmd_list(struct qeth_card *card)
{
      struct qeth_reply *reply, *r;
      unsigned long flags;

      QETH_DBF_TEXT(trace, 4, "clipalst");

      spin_lock_irqsave(&card->lock, flags);
      list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
            qeth_get_reply(reply);
            reply->rc = -EIO;
            atomic_inc(&reply->received);
            list_del_init(&reply->list);
            wake_up(&reply->wait_q);
            qeth_put_reply(reply);
      }
      spin_unlock_irqrestore(&card->lock, flags);
}

static void
qeth_send_control_data_cb(struct qeth_channel *channel,
                    struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      struct qeth_reply *reply, *r;
      struct qeth_ipa_cmd *cmd;
      unsigned long flags;
      int keep_reply;

      QETH_DBF_TEXT(trace,4,"sndctlcb");

      card = CARD_FROM_CDEV(channel->ccwdev);
      if (qeth_check_idx_response(iob->data)) {
            qeth_clear_ipacmd_list(card);
            qeth_schedule_recovery(card);
            goto out;
      }

      cmd = qeth_check_ipa_data(card, iob);
      if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
            goto out;
      /*in case of OSN : check if cmd is set */
      if (card->info.type == QETH_CARD_TYPE_OSN &&
          cmd &&
          cmd->hdr.command != IPA_CMD_STARTLAN &&
          card->osn_info.assist_cb != NULL) {
            card->osn_info.assist_cb(card->dev, cmd);
            goto out;
      }

      spin_lock_irqsave(&card->lock, flags);
      list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
            if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
                ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
                  qeth_get_reply(reply);
                  list_del_init(&reply->list);
                  spin_unlock_irqrestore(&card->lock, flags);
                  keep_reply = 0;
                  if (reply->callback != NULL) {
                        if (cmd) {
                              reply->offset = (__u16)((char*)cmd -
                                                (char *)iob->data);
                              keep_reply = reply->callback(card,
                                          reply,
                                          (unsigned long)cmd);
                        } else
                              keep_reply = reply->callback(card,
                                          reply,
                                          (unsigned long)iob);
                  }
                  if (cmd)
                        reply->rc = (u16) cmd->hdr.return_code;
                  else if (iob->rc)
                        reply->rc = iob->rc;
                  if (keep_reply) {
                        spin_lock_irqsave(&card->lock, flags);
                        list_add_tail(&reply->list,
                                    &card->cmd_waiter_list);
                        spin_unlock_irqrestore(&card->lock, flags);
                  } else {
                        atomic_inc(&reply->received);
                        wake_up(&reply->wait_q);
                  }
                  qeth_put_reply(reply);
                  goto out;
            }
      }
      spin_unlock_irqrestore(&card->lock, flags);
out:
      memcpy(&card->seqno.pdu_hdr_ack,
            QETH_PDU_HEADER_SEQ_NO(iob->data),
            QETH_SEQ_NO_LENGTH);
      qeth_release_buffer(channel,iob);
}

static void
qeth_prepare_control_data(struct qeth_card *card, int len,
                    struct qeth_cmd_buffer *iob)
{
      qeth_setup_ccw(&card->write,iob->data,len);
      iob->callback = qeth_release_buffer;

      memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
             &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
      card->seqno.trans_hdr++;
      memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
             &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
      card->seqno.pdu_hdr++;
      memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
             &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
      QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
}

static int
qeth_send_control_data(struct qeth_card *card, int len,
                   struct qeth_cmd_buffer *iob,
                   int (*reply_cb)
                   (struct qeth_card *, struct qeth_reply*, unsigned long),
                   void *reply_param)

{
      int rc;
      unsigned long flags;
      struct qeth_reply *reply = NULL;
      unsigned long timeout;

      QETH_DBF_TEXT(trace, 2, "sendctl");

      reply = qeth_alloc_reply(card);
      if (!reply) {
            PRINT_WARN("Could no alloc qeth_reply!\n");
            return -ENOMEM;
      }
      reply->callback = reply_cb;
      reply->param = reply_param;
      if (card->state == CARD_STATE_DOWN)
            reply->seqno = QETH_IDX_COMMAND_SEQNO;
      else
            reply->seqno = card->seqno.ipa++;
      init_waitqueue_head(&reply->wait_q);
      spin_lock_irqsave(&card->lock, flags);
      list_add_tail(&reply->list, &card->cmd_waiter_list);
      spin_unlock_irqrestore(&card->lock, flags);
      QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);

      while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
      qeth_prepare_control_data(card, len, iob);

      if (IS_IPA(iob->data))
            timeout = jiffies + QETH_IPA_TIMEOUT;
      else
            timeout = jiffies + QETH_TIMEOUT;

      QETH_DBF_TEXT(trace, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
      rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
                        (addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
      if (rc){
            PRINT_WARN("qeth_send_control_data: "
                     "ccw_device_start rc = %i\n", rc);
            QETH_DBF_TEXT_(trace, 2, " err%d", rc);
            spin_lock_irqsave(&card->lock, flags);
            list_del_init(&reply->list);
            qeth_put_reply(reply);
            spin_unlock_irqrestore(&card->lock, flags);
            qeth_release_buffer(iob->channel, iob);
            atomic_set(&card->write.irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }
      while (!atomic_read(&reply->received)) {
            if (time_after(jiffies, timeout)) {
                  spin_lock_irqsave(&reply->card->lock, flags);
                  list_del_init(&reply->list);
                  spin_unlock_irqrestore(&reply->card->lock, flags);
                  reply->rc = -ETIME;
                  atomic_inc(&reply->received);
                  wake_up(&reply->wait_q);
            }
            cpu_relax();
      };
      rc = reply->rc;
      qeth_put_reply(reply);
      return rc;
}

static int
qeth_osn_send_control_data(struct qeth_card *card, int len,
                     struct qeth_cmd_buffer *iob)
{
      unsigned long flags;
      int rc = 0;

      QETH_DBF_TEXT(trace, 5, "osndctrd");

      wait_event(card->wait_q,
               atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
      qeth_prepare_control_data(card, len, iob);
      QETH_DBF_TEXT(trace, 6, "osnoirqp");
      spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
      rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
                        (addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
      if (rc){
            PRINT_WARN("qeth_osn_send_control_data: "
                     "ccw_device_start rc = %i\n", rc);
            QETH_DBF_TEXT_(trace, 2, " err%d", rc);
            qeth_release_buffer(iob->channel, iob);
            atomic_set(&card->write.irq_pending, 0);
            wake_up(&card->wait_q);
      }
      return rc;
}

static inline void
qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
                 char prot_type)
{
      memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
      memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data),&prot_type,1);
      memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
}

static int
qeth_osn_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
                  int data_len)
{
      u16 s1, s2;

      QETH_DBF_TEXT(trace,4,"osndipa");

      qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
      s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
      s2 = (u16)data_len;
      memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
      return qeth_osn_send_control_data(card, s1, iob);
}

static int
qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
              int (*reply_cb)
              (struct qeth_card *,struct qeth_reply*, unsigned long),
              void *reply_param)
{
      int rc;
      char prot_type;

      QETH_DBF_TEXT(trace,4,"sendipa");

      if (card->options.layer2)
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  prot_type = QETH_PROT_OSN2;
            else
                  prot_type = QETH_PROT_LAYER2;
      else
            prot_type = QETH_PROT_TCPIP;
      qeth_prepare_ipa_cmd(card,iob,prot_type);
      rc = qeth_send_control_data(card, IPA_CMD_LENGTH, iob,
                            reply_cb, reply_param);
      return rc;
}


static int
qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
              unsigned long data)
{
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup, 2, "cmenblcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.cm_filter_r,
             QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
      return 0;
}

static int
qeth_cm_enable(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup,2,"cmenable");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
      memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
             &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
             &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);

      rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
                            qeth_cm_enable_cb, NULL);
      return rc;
}

static int
qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
             unsigned long data)
{

      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup, 2, "cmsetpcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.cm_connection_r,
             QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
      return 0;
}

static int
qeth_cm_setup(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup,2,"cmsetup");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
      memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
             &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
             &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
             &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
      rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
                            qeth_cm_setup_cb, NULL);
      return rc;

}

static int
qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
               unsigned long data)
{

      __u16 mtu, framesize;
      __u16 len;
      __u8 link_type;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup, 2, "ulpenacb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.ulp_filter_r,
             QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      if (qeth_get_mtu_out_of_mpc(card->info.type)) {
            memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
            mtu = qeth_get_mtu_outof_framesize(framesize);
            if (!mtu) {
                  iob->rc = -EINVAL;
                  QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
                  return 0;
            }
            card->info.max_mtu = mtu;
            card->info.initial_mtu = mtu;
            card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
      } else {
            card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
            card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
            card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
      }

      memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
      if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
            memcpy(&link_type,
                   QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
            card->info.link_type = link_type;
      } else
            card->info.link_type = 0;
      QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
      return 0;
}

static int
qeth_ulp_enable(struct qeth_card *card)
{
      int rc;
      char prot_type;
      struct qeth_cmd_buffer *iob;

      /*FIXME: trace view callbacks*/
      QETH_DBF_TEXT(setup,2,"ulpenabl");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);

      *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
            (__u8) card->info.portno;
      if (card->options.layer2)
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  prot_type = QETH_PROT_OSN2;
            else
                  prot_type = QETH_PROT_LAYER2;
      else
            prot_type = QETH_PROT_TCPIP;

      memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data),&prot_type,1);
      memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
             &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
             card->info.portname, 9);
      rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
                            qeth_ulp_enable_cb, NULL);
      return rc;

}

static int
qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
              unsigned long data)
{
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup, 2, "ulpstpcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.ulp_connection_r,
             QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
      return 0;
}

static int
qeth_ulp_setup(struct qeth_card *card)
{
      int rc;
      __u16 temp;
      struct qeth_cmd_buffer *iob;
      struct ccw_dev_id dev_id;

      QETH_DBF_TEXT(setup,2,"ulpsetup");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);

      memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
             &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
             &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);

      ccw_device_get_id(CARD_DDEV(card), &dev_id);
      memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
      temp = (card->info.cula << 8) + card->info.unit_addr2;
      memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
      rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
                            qeth_ulp_setup_cb, NULL);
      return rc;
}

static inline int
qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
                   unsigned int siga_error, const char *dbftext)
{
      if (qdio_error || siga_error) {
            QETH_DBF_TEXT(trace, 2, dbftext);
            QETH_DBF_TEXT(qerr, 2, dbftext);
            QETH_DBF_TEXT_(qerr, 2, " F15=%02X",
                         buf->element[15].flags & 0xff);
            QETH_DBF_TEXT_(qerr, 2, " F14=%02X",
                         buf->element[14].flags & 0xff);
            QETH_DBF_TEXT_(qerr, 2, " qerr=%X", qdio_error);
            QETH_DBF_TEXT_(qerr, 2, " serr=%X", siga_error);
            return 1;
      }
      return 0;
}

static struct sk_buff *
qeth_get_skb(unsigned int length, struct qeth_hdr *hdr)
{
      struct sk_buff* skb;
      int add_len;

      add_len = 0;
      if (hdr->hdr.osn.id == QETH_HEADER_TYPE_OSN)
            add_len = sizeof(struct qeth_hdr);
#ifdef CONFIG_QETH_VLAN
      else
            add_len = VLAN_HLEN;
#endif
      skb = dev_alloc_skb(length + add_len);
      if (skb && add_len)
            skb_reserve(skb, add_len);
      return skb;
}

static inline int
qeth_create_skb_frag(struct qdio_buffer_element *element,
                 struct sk_buff **pskb,
                 int offset, int *pfrag, int data_len)
{
      struct page *page = virt_to_page(element->addr);
      if (*pfrag == 0) {
            /* the upper protocol layers assume that there is data in the
             * skb itself. Copy a small amount (64 bytes) to make them
             * happy. */
            *pskb = dev_alloc_skb(64 + QETH_FAKE_LL_LEN_ETH);
            if (!(*pskb))
                  return -ENOMEM;
            skb_reserve(*pskb, QETH_FAKE_LL_LEN_ETH);
            if (data_len <= 64) {
                  memcpy(skb_put(*pskb, data_len), element->addr + offset,
                        data_len);
            } else {
                  get_page(page);
                  memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
                  skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
                        data_len - 64);
                  (*pskb)->data_len += data_len - 64;
                  (*pskb)->len        += data_len - 64;
                  (*pskb)->truesize += data_len - 64;
            }
      } else {
            get_page(page);
            skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
            (*pskb)->data_len += data_len;
            (*pskb)->len        += data_len;
            (*pskb)->truesize += data_len;
      }
      (*pfrag)++;
      return 0;
}

static inline struct qeth_buffer_pool_entry *
qeth_find_free_buffer_pool_entry(struct qeth_card *card)
{
      struct list_head *plh;
      struct qeth_buffer_pool_entry *entry;
      int i, free;
      struct page *page;

      if (list_empty(&card->qdio.in_buf_pool.entry_list))
            return NULL;

      list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
            entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
            free = 1;
            for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
                  if (page_count(virt_to_page(entry->elements[i])) > 1) {
                        free = 0;
                        break;
                  }
            }
            if (free) {
                  list_del_init(&entry->list);
                  return entry;
            }
      }

      /* no free buffer in pool so take first one and swap pages */
      entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
                  struct qeth_buffer_pool_entry, list);
      for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
            if (page_count(virt_to_page(entry->elements[i])) > 1) {
                  page = alloc_page(GFP_ATOMIC|GFP_DMA);
                  if (!page) {
                        return NULL;
                  } else {
                        free_page((unsigned long)entry->elements[i]);
                        entry->elements[i] = page_address(page);
                        if (card->options.performance_stats)
                              card->perf_stats.sg_alloc_page_rx++;
                  }
            }
      }
      list_del_init(&entry->list);
      return entry;
}

static struct sk_buff *
qeth_get_next_skb(struct qeth_card *card, struct qdio_buffer *buffer,
              struct qdio_buffer_element **__element, int *__offset,
              struct qeth_hdr **hdr)
{
      struct qdio_buffer_element *element = *__element;
      int offset = *__offset;
      struct sk_buff *skb = NULL;
      int skb_len;
      void *data_ptr;
      int data_len;
      int use_rx_sg = 0;
      int frag = 0;

      QETH_DBF_TEXT(trace,6,"nextskb");
      /* qeth_hdr must not cross element boundaries */
      if (element->length < offset + sizeof(struct qeth_hdr)){
            if (qeth_is_last_sbale(element))
                  return NULL;
            element++;
            offset = 0;
            if (element->length < sizeof(struct qeth_hdr))
                  return NULL;
      }
      *hdr = element->addr + offset;

      offset += sizeof(struct qeth_hdr);
      if (card->options.layer2)
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  skb_len = (*hdr)->hdr.osn.pdu_length;
            else
                  skb_len = (*hdr)->hdr.l2.pkt_length;
      else
            skb_len = (*hdr)->hdr.l3.length;

      if (!skb_len)
            return NULL;
      if ((skb_len >= card->options.rx_sg_cb) &&
          (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
          (!atomic_read(&card->force_alloc_skb))) {
            use_rx_sg = 1;
      } else {
            if (card->options.fake_ll) {
                  if (card->dev->type == ARPHRD_IEEE802_TR) {
                        if (!(skb = qeth_get_skb(skb_len +
                                    QETH_FAKE_LL_LEN_TR, *hdr)))
                              goto no_mem;
                        skb_reserve(skb, QETH_FAKE_LL_LEN_TR);
                  } else {
                        if (!(skb = qeth_get_skb(skb_len +
                                    QETH_FAKE_LL_LEN_ETH, *hdr)))
                              goto no_mem;
                        skb_reserve(skb, QETH_FAKE_LL_LEN_ETH);
                  }
            } else {
                  skb = qeth_get_skb(skb_len, *hdr);
                  if (!skb)
                        goto no_mem;
            }
      }

      data_ptr = element->addr + offset;
      while (skb_len) {
            data_len = min(skb_len, (int)(element->length - offset));
            if (data_len) {
                  if (use_rx_sg) {
                        if (qeth_create_skb_frag(element, &skb, offset,
                            &frag, data_len))
                              goto no_mem;
                  } else {
                        memcpy(skb_put(skb, data_len), data_ptr,
                              data_len);
                  }
            }
            skb_len -= data_len;
            if (skb_len){
                  if (qeth_is_last_sbale(element)){
                        QETH_DBF_TEXT(trace,4,"unexeob");
                        QETH_DBF_TEXT_(trace,4,"%s",CARD_BUS_ID(card));
                        QETH_DBF_TEXT(qerr,2,"unexeob");
                        QETH_DBF_TEXT_(qerr,2,"%s",CARD_BUS_ID(card));
                        QETH_DBF_HEX(misc,4,buffer,sizeof(*buffer));
                        dev_kfree_skb_any(skb);
                        card->stats.rx_errors++;
                        return NULL;
                  }
                  element++;
                  offset = 0;
                  data_ptr = element->addr;
            } else {
                  offset += data_len;
            }
      }
      *__element = element;
      *__offset = offset;
      if (use_rx_sg && card->options.performance_stats) {
            card->perf_stats.sg_skbs_rx++;
            card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
      }
      return skb;
no_mem:
      if (net_ratelimit()){
            PRINT_WARN("No memory for packet received on %s.\n",
                     QETH_CARD_IFNAME(card));
            QETH_DBF_TEXT(trace,2,"noskbmem");
            QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
      }
      card->stats.rx_dropped++;
      return NULL;
}

static __be16
qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
{
      struct qeth_card *card;
      struct ethhdr *eth;

      QETH_DBF_TEXT(trace,6,"typtrans");

      card = (struct qeth_card *)dev->priv;
#ifdef CONFIG_TR
      if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
          (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
            return tr_type_trans(skb,dev);
#endif /* CONFIG_TR */
      skb_reset_mac_header(skb);
      skb_pull(skb, ETH_HLEN );
      eth = eth_hdr(skb);

      if (*eth->h_dest & 1) {
            if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
                  skb->pkt_type = PACKET_BROADCAST;
            else
                  skb->pkt_type = PACKET_MULTICAST;
      } else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
            skb->pkt_type = PACKET_OTHERHOST;

      if (ntohs(eth->h_proto) >= 1536)
            return eth->h_proto;
      if (*(unsigned short *) (skb->data) == 0xFFFF)
            return htons(ETH_P_802_3);
      return htons(ETH_P_802_2);
}

static void
qeth_rebuild_skb_fake_ll_tr(struct qeth_card *card, struct sk_buff *skb,
                   struct qeth_hdr *hdr)
{
      struct trh_hdr *fake_hdr;
      struct trllc *fake_llc;
      struct iphdr *ip_hdr;

      QETH_DBF_TEXT(trace,5,"skbfktr");
      skb_set_mac_header(skb, (int)-QETH_FAKE_LL_LEN_TR);
      /* this is a fake ethernet header */
      fake_hdr = tr_hdr(skb);

      /* the destination MAC address */
      switch (skb->pkt_type){
      case PACKET_MULTICAST:
            switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
            case __constant_htons(ETH_P_IPV6):
                  ndisc_mc_map((struct in6_addr *)
                             skb->data + QETH_FAKE_LL_V6_ADDR_POS,
                             fake_hdr->daddr, card->dev, 0);
                  break;
#endif /* CONFIG_QETH_IPV6 */
            case __constant_htons(ETH_P_IP):
                  ip_hdr = (struct iphdr *)skb->data;
                  ip_tr_mc_map(ip_hdr->daddr, fake_hdr->daddr);
                  break;
            default:
                  memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
            }
            break;
      case PACKET_BROADCAST:
            memset(fake_hdr->daddr, 0xff, TR_ALEN);
            break;
      default:
            memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
      }
      /* the source MAC address */
      if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
            memcpy(fake_hdr->saddr, &hdr->hdr.l3.dest_addr[2], TR_ALEN);
      else
            memset(fake_hdr->saddr, 0, TR_ALEN);
      fake_hdr->rcf=0;
      fake_llc = (struct trllc*)&(fake_hdr->rcf);
      fake_llc->dsap = EXTENDED_SAP;
      fake_llc->ssap = EXTENDED_SAP;
      fake_llc->llc  = UI_CMD;
      fake_llc->protid[0] = 0;
      fake_llc->protid[1] = 0;
      fake_llc->protid[2] = 0;
      fake_llc->ethertype = ETH_P_IP;
}

static void
qeth_rebuild_skb_fake_ll_eth(struct qeth_card *card, struct sk_buff *skb,
                   struct qeth_hdr *hdr)
{
      struct ethhdr *fake_hdr;
      struct iphdr *ip_hdr;

      QETH_DBF_TEXT(trace,5,"skbfketh");
      skb_set_mac_header(skb, -QETH_FAKE_LL_LEN_ETH);
      /* this is a fake ethernet header */
      fake_hdr = eth_hdr(skb);

      /* the destination MAC address */
      switch (skb->pkt_type){
      case PACKET_MULTICAST:
            switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
            case __constant_htons(ETH_P_IPV6):
                  ndisc_mc_map((struct in6_addr *)
                             skb->data + QETH_FAKE_LL_V6_ADDR_POS,
                             fake_hdr->h_dest, card->dev, 0);
                  break;
#endif /* CONFIG_QETH_IPV6 */
            case __constant_htons(ETH_P_IP):
                  ip_hdr = (struct iphdr *)skb->data;
                  ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
                  break;
            default:
                  memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
            }
            break;
      case PACKET_BROADCAST:
            memset(fake_hdr->h_dest, 0xff, ETH_ALEN);
            break;
      default:
            memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
      }
      /* the source MAC address */
      if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
            memcpy(fake_hdr->h_source, &hdr->hdr.l3.dest_addr[2], ETH_ALEN);
      else
            memset(fake_hdr->h_source, 0, ETH_ALEN);
      /* the protocol */
      fake_hdr->h_proto = skb->protocol;
}

static inline void
qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
                  struct qeth_hdr *hdr)
{
      if (card->dev->type == ARPHRD_IEEE802_TR)
            qeth_rebuild_skb_fake_ll_tr(card, skb, hdr);
      else
            qeth_rebuild_skb_fake_ll_eth(card, skb, hdr);
}

static inline void
qeth_layer2_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
                  struct qeth_hdr *hdr)
{
      skb->pkt_type = PACKET_HOST;
      skb->protocol = qeth_type_trans(skb, skb->dev);
      if (card->options.checksum_type == NO_CHECKSUMMING)
            skb->ip_summed = CHECKSUM_UNNECESSARY;
      else
            skb->ip_summed = CHECKSUM_NONE;
      *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
}

static __u16
qeth_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
             struct qeth_hdr *hdr)
{
      unsigned short vlan_id = 0;
#ifdef CONFIG_QETH_IPV6
      if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
            skb->pkt_type = PACKET_HOST;
            skb->protocol = qeth_type_trans(skb, card->dev);
            return 0;
      }
#endif /* CONFIG_QETH_IPV6 */
      skb->protocol = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
                        ETH_P_IP);
      switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK){
      case QETH_CAST_UNICAST:
            skb->pkt_type = PACKET_HOST;
            break;
      case QETH_CAST_MULTICAST:
            skb->pkt_type = PACKET_MULTICAST;
            card->stats.multicast++;
            break;
      case QETH_CAST_BROADCAST:
            skb->pkt_type = PACKET_BROADCAST;
            card->stats.multicast++;
            break;
      case QETH_CAST_ANYCAST:
      case QETH_CAST_NOCAST:
      default:
            skb->pkt_type = PACKET_HOST;
      }

      if (hdr->hdr.l3.ext_flags &
          (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
            vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
      }

      if (card->options.fake_ll)
            qeth_rebuild_skb_fake_ll(card, skb, hdr);
      else
            skb_reset_mac_header(skb);
      skb->ip_summed = card->options.checksum_type;
      if (card->options.checksum_type == HW_CHECKSUMMING){
            if ( (hdr->hdr.l3.ext_flags &
                  (QETH_HDR_EXT_CSUM_HDR_REQ |
                   QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
                 (QETH_HDR_EXT_CSUM_HDR_REQ |
                  QETH_HDR_EXT_CSUM_TRANSP_REQ) )
                  skb->ip_summed = CHECKSUM_UNNECESSARY;
            else
                  skb->ip_summed = SW_CHECKSUMMING;
      }
      return vlan_id;
}

static void
qeth_process_inbound_buffer(struct qeth_card *card,
                      struct qeth_qdio_buffer *buf, int index)
{
      struct qdio_buffer_element *element;
      struct sk_buff *skb;
      struct qeth_hdr *hdr;
      int offset;
      int rxrc;
      __u16 vlan_tag = 0;

      /* get first element of current buffer */
      element = (struct qdio_buffer_element *)&buf->buffer->element[0];
      offset = 0;
      if (card->options.performance_stats)
            card->perf_stats.bufs_rec++;
      while((skb = qeth_get_next_skb(card, buf->buffer, &element,
                               &offset, &hdr))) {
            skb->dev = card->dev;
            if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
                  qeth_layer2_rebuild_skb(card, skb, hdr);
            else if (hdr->hdr.l3.id == QETH_HEADER_TYPE_LAYER3)
                  vlan_tag = qeth_rebuild_skb(card, skb, hdr);
            else if (hdr->hdr.osn.id == QETH_HEADER_TYPE_OSN) {
                  skb_push(skb, sizeof(struct qeth_hdr));
                  skb_copy_to_linear_data(skb, hdr,
                                    sizeof(struct qeth_hdr));
            } else { /* unknown header type */
                  dev_kfree_skb_any(skb);
                  QETH_DBF_TEXT(trace, 3, "inbunkno");
                  QETH_DBF_HEX(control, 3, hdr, QETH_DBF_CONTROL_LEN);
                  continue;
            }
            /* is device UP ? */
            if (!(card->dev->flags & IFF_UP)){
                  dev_kfree_skb_any(skb);
                  continue;
            }
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  rxrc = card->osn_info.data_cb(skb);
            else
#ifdef CONFIG_QETH_VLAN
            if (vlan_tag)
                  if (card->vlangrp)
                        vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag);
                  else {
                        dev_kfree_skb_any(skb);
                        continue;
                  }
            else
#endif
                  rxrc = netif_rx(skb);
            card->dev->last_rx = jiffies;
            card->stats.rx_packets++;
            card->stats.rx_bytes += skb->len;
      }
}

static int
qeth_init_input_buffer(struct qeth_card *card, struct qeth_qdio_buffer *buf)
{
      struct qeth_buffer_pool_entry *pool_entry;
      int i;

      pool_entry = qeth_find_free_buffer_pool_entry(card);
      if (!pool_entry)
            return 1;
      /*
       * since the buffer is accessed only from the input_tasklet
       * there shouldn't be a need to synchronize; also, since we use
       * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
       * buffers
       */
      BUG_ON(!pool_entry);

      buf->pool_entry = pool_entry;
      for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
            buf->buffer->element[i].length = PAGE_SIZE;
            buf->buffer->element[i].addr =  pool_entry->elements[i];
            if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
                  buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
            else
                  buf->buffer->element[i].flags = 0;
      }
      buf->state = QETH_QDIO_BUF_EMPTY;
      return 0;
}

static void
qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
                   struct qeth_qdio_out_buffer *buf)
{
      int i;
      struct sk_buff *skb;

      /* is PCI flag set on buffer? */
      if (buf->buffer->element[0].flags & 0x40)
            atomic_dec(&queue->set_pci_flags_count);

      while ((skb = skb_dequeue(&buf->skb_list))){
            atomic_dec(&skb->users);
            dev_kfree_skb_any(skb);
      }
      qeth_eddp_buf_release_contexts(buf);
      for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i){
            buf->buffer->element[i].length = 0;
            buf->buffer->element[i].addr = NULL;
            buf->buffer->element[i].flags = 0;
      }
      buf->next_element_to_fill = 0;
      atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}

static void
qeth_queue_input_buffer(struct qeth_card *card, int index)
{
      struct qeth_qdio_q *queue = card->qdio.in_q;
      int count;
      int i;
      int rc;
      int newcount = 0;

      QETH_DBF_TEXT(trace,6,"queinbuf");
      count = (index < queue->next_buf_to_init)?
            card->qdio.in_buf_pool.buf_count -
            (queue->next_buf_to_init - index) :
            card->qdio.in_buf_pool.buf_count -
            (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
      /* only requeue at a certain threshold to avoid SIGAs */
      if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)){
            for (i = queue->next_buf_to_init;
                 i < queue->next_buf_to_init + count; ++i) {
                  if (qeth_init_input_buffer(card,
                        &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
                        break;
                  } else {
                        newcount++;
                  }
            }

            if (newcount < count) {
                  /* we are in memory shortage so we switch back to
                     traditional skb allocation and drop packages */
                  if (!atomic_read(&card->force_alloc_skb) &&
                      net_ratelimit())
                        PRINT_WARN("Switch to alloc skb\n");
                  atomic_set(&card->force_alloc_skb, 3);
                  count = newcount;
            } else {
                  if ((atomic_read(&card->force_alloc_skb) == 1) &&
                      net_ratelimit())
                        PRINT_WARN("Switch to sg\n");
                  atomic_add_unless(&card->force_alloc_skb, -1, 0);
            }

            /*
             * according to old code it should be avoided to requeue all
             * 128 buffers in order to benefit from PCI avoidance.
             * this function keeps at least one buffer (the buffer at
             * 'index') un-requeued -> this buffer is the first buffer that
             * will be requeued the next time
             */
            if (card->options.performance_stats) {
                  card->perf_stats.inbound_do_qdio_cnt++;
                  card->perf_stats.inbound_do_qdio_start_time =
                        qeth_get_micros();
            }
            rc = do_QDIO(CARD_DDEV(card),
                       QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
                       0, queue->next_buf_to_init, count, NULL);
            if (card->options.performance_stats)
                  card->perf_stats.inbound_do_qdio_time +=
                        qeth_get_micros() -
                        card->perf_stats.inbound_do_qdio_start_time;
            if (rc){
                  PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
                           "return %i (device %s).\n",
                           rc, CARD_DDEV_ID(card));
                  QETH_DBF_TEXT(trace,2,"qinberr");
                  QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
            }
            queue->next_buf_to_init = (queue->next_buf_to_init + count) %
                                QDIO_MAX_BUFFERS_PER_Q;
      }
}

static inline void
qeth_put_buffer_pool_entry(struct qeth_card *card,
                     struct qeth_buffer_pool_entry *entry)
{
      QETH_DBF_TEXT(trace, 6, "ptbfplen");
      list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
}

static void
qeth_qdio_input_handler(struct ccw_device * ccwdev, unsigned int status,
                    unsigned int qdio_err, unsigned int siga_err,
                  unsigned int queue, int first_element, int count,
                  unsigned long card_ptr)
{
      struct net_device *net_dev;
      struct qeth_card *card;
      struct qeth_qdio_buffer *buffer;
      int index;
      int i;

      QETH_DBF_TEXT(trace, 6, "qdinput");
      card = (struct qeth_card *) card_ptr;
      net_dev = card->dev;
      if (card->options.performance_stats) {
            card->perf_stats.inbound_cnt++;
            card->perf_stats.inbound_start_time = qeth_get_micros();
      }
      if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
            if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
                  QETH_DBF_TEXT(trace, 1,"qdinchk");
                  QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
                  QETH_DBF_TEXT_(trace,1,"%04X%04X",first_element,count);
                  QETH_DBF_TEXT_(trace,1,"%04X%04X", queue, status);
                  qeth_schedule_recovery(card);
                  return;
            }
      }
      for (i = first_element; i < (first_element + count); ++i) {
            index = i % QDIO_MAX_BUFFERS_PER_Q;
            buffer = &card->qdio.in_q->bufs[index];
            if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
                  qeth_check_qdio_errors(buffer->buffer,
                                   qdio_err, siga_err,"qinerr")))
                  qeth_process_inbound_buffer(card, buffer, index);
            /* clear buffer and give back to hardware */
            qeth_put_buffer_pool_entry(card, buffer->pool_entry);
            qeth_queue_input_buffer(card, index);
      }
      if (card->options.performance_stats)
            card->perf_stats.inbound_time += qeth_get_micros() -
                  card->perf_stats.inbound_start_time;
}

static int
qeth_handle_send_error(struct qeth_card *card,
                   struct qeth_qdio_out_buffer *buffer,
                   unsigned int qdio_err, unsigned int siga_err)
{
      int sbalf15 = buffer->buffer->element[15].flags & 0xff;
      int cc = siga_err & 3;

      QETH_DBF_TEXT(trace, 6, "hdsnderr");
      qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
      switch (cc) {
      case 0:
            if (qdio_err){
                  QETH_DBF_TEXT(trace, 1,"lnkfail");
                  QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
                  QETH_DBF_TEXT_(trace,1,"%04x %02x",
                               (u16)qdio_err, (u8)sbalf15);
                  return QETH_SEND_ERROR_LINK_FAILURE;
            }
            return QETH_SEND_ERROR_NONE;
      case 2:
            if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
                  QETH_DBF_TEXT(trace, 1, "SIGAcc2B");
                  QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
                  return QETH_SEND_ERROR_KICK_IT;
            }
            if ((sbalf15 >= 15) && (sbalf15 <= 31))
                  return QETH_SEND_ERROR_RETRY;
            return QETH_SEND_ERROR_LINK_FAILURE;
            /* look at qdio_error and sbalf 15 */
      case 1:
            QETH_DBF_TEXT(trace, 1, "SIGAcc1");
            QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
            return QETH_SEND_ERROR_LINK_FAILURE;
      case 3:
      default:
            QETH_DBF_TEXT(trace, 1, "SIGAcc3");
            QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
            return QETH_SEND_ERROR_KICK_IT;
      }
}

void
qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
               int index, int count)
{
      struct qeth_qdio_out_buffer *buf;
      int rc;
      int i;
      unsigned int qdio_flags;

      QETH_DBF_TEXT(trace, 6, "flushbuf");

      for (i = index; i < index + count; ++i) {
            buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
            buf->buffer->element[buf->next_element_to_fill - 1].flags |=
                        SBAL_FLAGS_LAST_ENTRY;

            if (queue->card->info.type == QETH_CARD_TYPE_IQD)
                  continue;

            if (!queue->do_pack){
                  if ((atomic_read(&queue->used_buffers) >=
                        (QETH_HIGH_WATERMARK_PACK -
                         QETH_WATERMARK_PACK_FUZZ)) &&
                      !atomic_read(&queue->set_pci_flags_count)){
                        /* it's likely that we'll go to packing
                         * mode soon */
                        atomic_inc(&queue->set_pci_flags_count);
                        buf->buffer->element[0].flags |= 0x40;
                  }
            } else {
                  if (!atomic_read(&queue->set_pci_flags_count)){
                        /*
                         * there's no outstanding PCI any more, so we
                         * have to request a PCI to be sure that the PCI
                         * will wake at some time in the future then we
                         * can flush packed buffers that might still be
                         * hanging around, which can happen if no
                         * further send was requested by the stack
                         */
                        atomic_inc(&queue->set_pci_flags_count);
                        buf->buffer->element[0].flags |= 0x40;
                  }
            }
      }

      queue->card->dev->trans_start = jiffies;
      if (queue->card->options.performance_stats) {
            queue->card->perf_stats.outbound_do_qdio_cnt++;
            queue->card->perf_stats.outbound_do_qdio_start_time =
                  qeth_get_micros();
      }
      qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
      if (under_int)
            qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
      if (atomic_read(&queue->set_pci_flags_count))
            qdio_flags |= QDIO_FLAG_PCI_OUT;
      rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
                 queue->queue_no, index, count, NULL);
      if (queue->card->options.performance_stats)
            queue->card->perf_stats.outbound_do_qdio_time +=
                  qeth_get_micros() -
                  queue->card->perf_stats.outbound_do_qdio_start_time;
      if (rc){
            QETH_DBF_TEXT(trace, 2, "flushbuf");
            QETH_DBF_TEXT_(trace, 2, " err%d", rc);
            QETH_DBF_TEXT_(trace, 2, "%s", CARD_DDEV_ID(queue->card));
            queue->card->stats.tx_errors += count;
            /* this must not happen under normal circumstances. if it
             * happens something is really wrong -> recover */
            qeth_schedule_recovery(queue->card);
            return;
      }
      atomic_add(count, &queue->used_buffers);
      if (queue->card->options.performance_stats)
            queue->card->perf_stats.bufs_sent += count;
}

/*
 * Switched to packing state if the number of used buffers on a queue
 * reaches a certain limit.
 */
static void
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
      if (!queue->do_pack) {
            if (atomic_read(&queue->used_buffers)
                >= QETH_HIGH_WATERMARK_PACK){
                  /* switch non-PACKING -> PACKING */
                  QETH_DBF_TEXT(trace, 6, "np->pack");
                  if (queue->card->options.performance_stats)
                        queue->card->perf_stats.sc_dp_p++;
                  queue->do_pack = 1;
            }
      }
}

/*
 * Switches from packing to non-packing mode. If there is a packing
 * buffer on the queue this buffer will be prepared to be flushed.
 * In that case 1 is returned to inform the caller. If no buffer
 * has to be flushed, zero is returned.
 */
static int
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
      struct qeth_qdio_out_buffer *buffer;
      int flush_count = 0;

      if (queue->do_pack) {
            if (atomic_read(&queue->used_buffers)
                <= QETH_LOW_WATERMARK_PACK) {
                  /* switch PACKING -> non-PACKING */
                  QETH_DBF_TEXT(trace, 6, "pack->np");
                  if (queue->card->options.performance_stats)
                        queue->card->perf_stats.sc_p_dp++;
                  queue->do_pack = 0;
                  /* flush packing buffers */
                  buffer = &queue->bufs[queue->next_buf_to_fill];
                  if ((atomic_read(&buffer->state) ==
                                    QETH_QDIO_BUF_EMPTY) &&
                      (buffer->next_element_to_fill > 0)) {
                        atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
                        flush_count++;
                        queue->next_buf_to_fill =
                              (queue->next_buf_to_fill + 1) %
                              QDIO_MAX_BUFFERS_PER_Q;
                  }
            }
      }
      return flush_count;
}

/*
 * Called to flush a packing buffer if no more pci flags are on the queue.
 * Checks if there is a packing buffer and prepares it to be flushed.
 * In that case returns 1, otherwise zero.
 */
static int
qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
      struct qeth_qdio_out_buffer *buffer;

      buffer = &queue->bufs[queue->next_buf_to_fill];
      if((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
         (buffer->next_element_to_fill > 0)){
            /* it's a packing buffer */
            atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
            queue->next_buf_to_fill =
                  (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
            return 1;
      }
      return 0;
}

static void
qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
      int index;
      int flush_cnt = 0;
      int q_was_packing = 0;

      /*
       * check if weed have to switch to non-packing mode or if
       * we have to get a pci flag out on the queue
       */
      if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
          !atomic_read(&queue->set_pci_flags_count)){
            if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
                        QETH_OUT_Q_UNLOCKED) {
                  /*
                   * If we get in here, there was no action in
                   * do_send_packet. So, we check if there is a
                   * packing buffer to be flushed here.
                   */
                  netif_stop_queue(queue->card->dev);
                  index = queue->next_buf_to_fill;
                  q_was_packing = queue->do_pack;
                  flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
                  if (!flush_cnt &&
                      !atomic_read(&queue->set_pci_flags_count))
                        flush_cnt +=
                              qeth_flush_buffers_on_no_pci(queue);
                  if (queue->card->options.performance_stats &&
                      q_was_packing)
                        queue->card->perf_stats.bufs_sent_pack +=
                              flush_cnt;
                  if (flush_cnt)
                        qeth_flush_buffers(queue, 1, index, flush_cnt);
                  atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
            }
      }
}

static void
qeth_qdio_output_handler(struct ccw_device * ccwdev, unsigned int status,
                    unsigned int qdio_error, unsigned int siga_error,
                  unsigned int __queue, int first_element, int count,
                  unsigned long card_ptr)
{
      struct qeth_card *card        = (struct qeth_card *) card_ptr;
      struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
      struct qeth_qdio_out_buffer *buffer;
      int i;

      QETH_DBF_TEXT(trace, 6, "qdouhdl");
      if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
            if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
                  QETH_DBF_TEXT(trace, 2, "achkcond");
                  QETH_DBF_TEXT_(trace, 2, "%s", CARD_BUS_ID(card));
                  QETH_DBF_TEXT_(trace, 2, "%08x", status);
                  netif_stop_queue(card->dev);
                  qeth_schedule_recovery(card);
                  return;
            }
      }
      if (card->options.performance_stats) {
            card->perf_stats.outbound_handler_cnt++;
            card->perf_stats.outbound_handler_start_time =
                  qeth_get_micros();
      }
      for(i = first_element; i < (first_element + count); ++i){
            buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
            /*we only handle the KICK_IT error by doing a recovery */
            if (qeth_handle_send_error(card, buffer,
                                 qdio_error, siga_error)
                        == QETH_SEND_ERROR_KICK_IT){
                  netif_stop_queue(card->dev);
                  qeth_schedule_recovery(card);
                  return;
            }
            qeth_clear_output_buffer(queue, buffer);
      }
      atomic_sub(count, &queue->used_buffers);
      /* check if we need to do something on this outbound queue */
      if (card->info.type != QETH_CARD_TYPE_IQD)
            qeth_check_outbound_queue(queue);

      netif_wake_queue(queue->card->dev);
      if (card->options.performance_stats)
            card->perf_stats.outbound_handler_time += qeth_get_micros() -
                  card->perf_stats.outbound_handler_start_time;
}

static void
qeth_create_qib_param_field(struct qeth_card *card, char *param_field)
{

      param_field[0] = _ascebc['P'];
      param_field[1] = _ascebc['C'];
      param_field[2] = _ascebc['I'];
      param_field[3] = _ascebc['T'];
      *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
      *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
      *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}

static void
qeth_create_qib_param_field_blkt(struct qeth_card *card, char *param_field)
{
      param_field[16] = _ascebc['B'];
        param_field[17] = _ascebc['L'];
        param_field[18] = _ascebc['K'];
        param_field[19] = _ascebc['T'];
        *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
        *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
        *((unsigned int *) (&param_field[28])) = card->info.blkt.inter_packet_jumbo;
}

static void
qeth_initialize_working_pool_list(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *entry;

      QETH_DBF_TEXT(trace,5,"inwrklst");

      list_for_each_entry(entry,
                      &card->qdio.init_pool.entry_list, init_list) {
            qeth_put_buffer_pool_entry(card,entry);
      }
}

static void
qeth_clear_working_pool_list(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry, *tmp;

      QETH_DBF_TEXT(trace,5,"clwrklst");
      list_for_each_entry_safe(pool_entry, tmp,
                      &card->qdio.in_buf_pool.entry_list, list){
                  list_del(&pool_entry->list);
      }
}

static void
qeth_free_buffer_pool(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry, *tmp;
      int i=0;
      QETH_DBF_TEXT(trace,5,"freepool");
      list_for_each_entry_safe(pool_entry, tmp,
                         &card->qdio.init_pool.entry_list, init_list){
            for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
                  free_page((unsigned long)pool_entry->elements[i]);
            list_del(&pool_entry->init_list);
            kfree(pool_entry);
      }
}

static int
qeth_alloc_buffer_pool(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry;
      void *ptr;
      int i, j;

      QETH_DBF_TEXT(trace,5,"alocpool");
      for (i = 0; i < card->qdio.init_pool.buf_count; ++i){
            pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
            if (!pool_entry){
                  qeth_free_buffer_pool(card);
                  return -ENOMEM;
            }
            for(j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j){
                  ptr = (void *) __get_free_page(GFP_KERNEL|GFP_DMA);
                  if (!ptr) {
                        while (j > 0)
                              free_page((unsigned long)
                                      pool_entry->elements[--j]);
                        kfree(pool_entry);
                        qeth_free_buffer_pool(card);
                        return -ENOMEM;
                  }
                  pool_entry->elements[j] = ptr;
            }
            list_add(&pool_entry->init_list,
                   &card->qdio.init_pool.entry_list);
      }
      return 0;
}

int
qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
{
      QETH_DBF_TEXT(trace, 2, "realcbp");

      if ((card->state != CARD_STATE_DOWN) &&
          (card->state != CARD_STATE_RECOVER))
            return -EPERM;

      /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
      qeth_clear_working_pool_list(card);
      qeth_free_buffer_pool(card);
      card->qdio.in_buf_pool.buf_count = bufcnt;
      card->qdio.init_pool.buf_count = bufcnt;
      return qeth_alloc_buffer_pool(card);
}

static int
qeth_alloc_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(setup, 2, "allcqdbf");

      if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
            QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
            return 0;

      card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
                          GFP_KERNEL|GFP_DMA);
      if (!card->qdio.in_q)
            goto out_nomem;
      QETH_DBF_TEXT(setup, 2, "inq");
      QETH_DBF_HEX(setup, 2, &card->qdio.in_q, sizeof(void *));
      memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
      /* give inbound qeth_qdio_buffers their qdio_buffers */
      for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
            card->qdio.in_q->bufs[i].buffer =
                  &card->qdio.in_q->qdio_bufs[i];
      /* inbound buffer pool */
      if (qeth_alloc_buffer_pool(card))
            goto out_freeinq;
      /* outbound */
      card->qdio.out_qs =
            kmalloc(card->qdio.no_out_queues *
                  sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
      if (!card->qdio.out_qs)
            goto out_freepool;
      for (i = 0; i < card->qdio.no_out_queues; ++i) {
            card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
                                     GFP_KERNEL|GFP_DMA);
            if (!card->qdio.out_qs[i])
                  goto out_freeoutq;
            QETH_DBF_TEXT_(setup, 2, "outq %i", i);
            QETH_DBF_HEX(setup, 2, &card->qdio.out_qs[i], sizeof(void *));
            memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
            card->qdio.out_qs[i]->queue_no = i;
            /* give outbound qeth_qdio_buffers their qdio_buffers */
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
                  card->qdio.out_qs[i]->bufs[j].buffer =
                        &card->qdio.out_qs[i]->qdio_bufs[j];
                  skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
                                  skb_list);
                  lockdep_set_class(
                        &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
                        &qdio_out_skb_queue_key);
                  INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
            }
      }
      return 0;

out_freeoutq:
      while (i > 0)
            kfree(card->qdio.out_qs[--i]);
      kfree(card->qdio.out_qs);
      card->qdio.out_qs = NULL;
out_freepool:
      qeth_free_buffer_pool(card);
out_freeinq:
      kfree(card->qdio.in_q);
      card->qdio.in_q = NULL;
out_nomem:
      atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
      return -ENOMEM;
}

static void
qeth_free_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(trace, 2, "freeqdbf");
      if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
            QETH_QDIO_UNINITIALIZED)
            return;
      kfree(card->qdio.in_q);
      card->qdio.in_q = NULL;
      /* inbound buffer pool */
      qeth_free_buffer_pool(card);
      /* free outbound qdio_qs */
      if (card->qdio.out_qs) {
            for (i = 0; i < card->qdio.no_out_queues; ++i) {
                  for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
                        qeth_clear_output_buffer(card->qdio.out_qs[i],
                                    &card->qdio.out_qs[i]->bufs[j]);
                  kfree(card->qdio.out_qs[i]);
            }
            kfree(card->qdio.out_qs);
            card->qdio.out_qs = NULL;
      }
}

static void
qeth_clear_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(trace, 2, "clearqdbf");
      /* clear outbound buffers to free skbs */
      for (i = 0; i < card->qdio.no_out_queues; ++i)
            if (card->qdio.out_qs && card->qdio.out_qs[i]) {
                  for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
                        qeth_clear_output_buffer(card->qdio.out_qs[i],
                                    &card->qdio.out_qs[i]->bufs[j]);
            }
}

static void
qeth_init_qdio_info(struct qeth_card *card)
{
      QETH_DBF_TEXT(setup, 4, "intqdinf");
      atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
      /* inbound */
      card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
      card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
      card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
      INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
      INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}

static int
qeth_init_qdio_queues(struct qeth_card *card)
{
      int i, j;
      int rc;

      QETH_DBF_TEXT(setup, 2, "initqdqs");

      /* inbound queue */
      memset(card->qdio.in_q->qdio_bufs, 0,
             QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
      qeth_initialize_working_pool_list(card);
      /*give only as many buffers to hardware as we have buffer pool entries*/
      for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
            qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
      card->qdio.in_q->next_buf_to_init = card->qdio.in_buf_pool.buf_count - 1;
      rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
                 card->qdio.in_buf_pool.buf_count - 1, NULL);
      if (rc) {
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            return rc;
      }
      rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
      if (rc) {
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            return rc;
      }
      /* outbound queue */
      for (i = 0; i < card->qdio.no_out_queues; ++i){
            memset(card->qdio.out_qs[i]->qdio_bufs, 0,
                   QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
                  qeth_clear_output_buffer(card->qdio.out_qs[i],
                              &card->qdio.out_qs[i]->bufs[j]);
            }
            card->qdio.out_qs[i]->card = card;
            card->qdio.out_qs[i]->next_buf_to_fill = 0;
            card->qdio.out_qs[i]->do_pack = 0;
            atomic_set(&card->qdio.out_qs[i]->used_buffers,0);
            atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
            atomic_set(&card->qdio.out_qs[i]->state,
                     QETH_OUT_Q_UNLOCKED);
      }
      return 0;
}

static int
qeth_qdio_establish(struct qeth_card *card)
{
      struct qdio_initialize init_data;
      char *qib_param_field;
      struct qdio_buffer **in_sbal_ptrs;
      struct qdio_buffer **out_sbal_ptrs;
      int i, j, k;
      int rc = 0;

      QETH_DBF_TEXT(setup, 2, "qdioest");

      qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
                        GFP_KERNEL);
      if (!qib_param_field)
            return -ENOMEM;

      qeth_create_qib_param_field(card, qib_param_field);
      qeth_create_qib_param_field_blkt(card, qib_param_field);

      in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
                         GFP_KERNEL);
      if (!in_sbal_ptrs) {
            kfree(qib_param_field);
            return -ENOMEM;
      }
      for(i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
            in_sbal_ptrs[i] = (struct qdio_buffer *)
                  virt_to_phys(card->qdio.in_q->bufs[i].buffer);

      out_sbal_ptrs =
            kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
                  sizeof(void *), GFP_KERNEL);
      if (!out_sbal_ptrs) {
            kfree(in_sbal_ptrs);
            kfree(qib_param_field);
            return -ENOMEM;
      }
      for(i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
            for(j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k){
                  out_sbal_ptrs[k] = (struct qdio_buffer *)
                        virt_to_phys(card->qdio.out_qs[i]->
                                   bufs[j].buffer);
            }

      memset(&init_data, 0, sizeof(struct qdio_initialize));
      init_data.cdev                   = CARD_DDEV(card);
      init_data.q_format               = qeth_get_qdio_q_format(card);
      init_data.qib_param_field_format = 0;
      init_data.qib_param_field        = qib_param_field;
      init_data.min_input_threshold    = QETH_MIN_INPUT_THRESHOLD;
      init_data.max_input_threshold    = QETH_MAX_INPUT_THRESHOLD;
      init_data.min_output_threshold   = QETH_MIN_OUTPUT_THRESHOLD;
      init_data.max_output_threshold   = QETH_MAX_OUTPUT_THRESHOLD;
      init_data.no_input_qs            = 1;
      init_data.no_output_qs           = card->qdio.no_out_queues;
      init_data.input_handler          = (qdio_handler_t *)
                                 qeth_qdio_input_handler;
      init_data.output_handler         = (qdio_handler_t *)
                                 qeth_qdio_output_handler;
      init_data.int_parm               = (unsigned long) card;
      init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
                                 QDIO_OUTBOUND_0COPY_SBALS |
                                 QDIO_USE_OUTBOUND_PCIS;
      init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
      init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;

      if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
            QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED)
            if ((rc = qdio_initialize(&init_data)))
                  atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);

      kfree(out_sbal_ptrs);
      kfree(in_sbal_ptrs);
      kfree(qib_param_field);
      return rc;
}

static int
qeth_qdio_activate(struct qeth_card *card)
{
      QETH_DBF_TEXT(setup,3,"qdioact");
      return qdio_activate(CARD_DDEV(card), 0);
}

static int
qeth_clear_channel(struct qeth_channel *channel)
{
      unsigned long flags;
      struct qeth_card *card;
      int rc;

      QETH_DBF_TEXT(trace,3,"clearch");
      card = CARD_FROM_CDEV(channel->ccwdev);
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc)
            return rc;
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state==CH_STATE_STOPPED, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_STOPPED)
            return -ETIME;
      channel->state = CH_STATE_DOWN;
      return 0;
}

static int
qeth_halt_channel(struct qeth_channel *channel)
{
      unsigned long flags;
      struct qeth_card *card;
      int rc;

      QETH_DBF_TEXT(trace,3,"haltch");
      card = CARD_FROM_CDEV(channel->ccwdev);
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc)
            return rc;
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state==CH_STATE_HALTED, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_HALTED)
            return -ETIME;
      return 0;
}

static int
qeth_halt_channels(struct qeth_card *card)
{
      int rc1 = 0, rc2=0, rc3 = 0;

      QETH_DBF_TEXT(trace,3,"haltchs");
      rc1 = qeth_halt_channel(&card->read);
      rc2 = qeth_halt_channel(&card->write);
      rc3 = qeth_halt_channel(&card->data);
      if (rc1)
            return rc1;
      if (rc2)
            return rc2;
      return rc3;
}
static int
qeth_clear_channels(struct qeth_card *card)
{
      int rc1 = 0, rc2=0, rc3 = 0;

      QETH_DBF_TEXT(trace,3,"clearchs");
      rc1 = qeth_clear_channel(&card->read);
      rc2 = qeth_clear_channel(&card->write);
      rc3 = qeth_clear_channel(&card->data);
      if (rc1)
            return rc1;
      if (rc2)
            return rc2;
      return rc3;
}

static int
qeth_clear_halt_card(struct qeth_card *card, int halt)
{
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"clhacrd");
      QETH_DBF_HEX(trace, 3, &card, sizeof(void *));

      if (halt)
            rc = qeth_halt_channels(card);
      if (rc)
            return rc;
      return qeth_clear_channels(card);
}

static int
qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
{
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"qdioclr");
      switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
            QETH_QDIO_CLEANING)) {
      case QETH_QDIO_ESTABLISHED:
            if ((rc = qdio_cleanup(CARD_DDEV(card),
                        (card->info.type == QETH_CARD_TYPE_IQD) ?
                        QDIO_FLAG_CLEANUP_USING_HALT :
                        QDIO_FLAG_CLEANUP_USING_CLEAR)))
                  QETH_DBF_TEXT_(trace, 3, "1err%d", rc);
            atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
            break;
      case QETH_QDIO_CLEANING:
            return rc;
      default:
            break;
      }
      if ((rc = qeth_clear_halt_card(card, use_halt)))
            QETH_DBF_TEXT_(trace, 3, "2err%d", rc);
      card->state = CARD_STATE_DOWN;
      return rc;
}

static int
qeth_dm_act(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(setup,2,"dmact");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, DM_ACT, DM_ACT_SIZE);

      memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
      rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
      return rc;
}

static int
qeth_mpc_initialize(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(setup,2,"mpcinit");

      if ((rc = qeth_issue_next_read(card))){
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            return rc;
      }
      if ((rc = qeth_cm_enable(card))){
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_cm_setup(card))){
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_ulp_enable(card))){
            QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_ulp_setup(card))){
            QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_alloc_qdio_buffers(card))){
            QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_qdio_establish(card))){
            QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
            qeth_free_qdio_buffers(card);
            goto out_qdio;
      }
      if ((rc = qeth_qdio_activate(card))){
            QETH_DBF_TEXT_(setup, 2, "7err%d", rc);
            goto out_qdio;
      }
      if ((rc = qeth_dm_act(card))){
            QETH_DBF_TEXT_(setup, 2, "8err%d", rc);
            goto out_qdio;
      }

      return 0;
out_qdio:
      qeth_qdio_clear_card(card, card->info.type!=QETH_CARD_TYPE_IQD);
      return rc;
}

static struct net_device *
qeth_get_netdevice(enum qeth_card_types type, enum qeth_link_types linktype)
{
      struct net_device *dev = NULL;

      switch (type) {
      case QETH_CARD_TYPE_OSAE:
            switch (linktype) {
            case QETH_LINK_TYPE_LANE_TR:
            case QETH_LINK_TYPE_HSTR:
#ifdef CONFIG_TR
                  dev = alloc_trdev(0);
#endif /* CONFIG_TR */
                  break;
            default:
                  dev = alloc_etherdev(0);
            }
            break;
      case QETH_CARD_TYPE_IQD:
            dev = alloc_netdev(0, "hsi%d", ether_setup);
            break;
      case QETH_CARD_TYPE_OSN:
            dev = alloc_netdev(0, "osn%d", ether_setup);
            break;
      default:
            dev = alloc_etherdev(0);
      }
      return dev;
}

/*hard_header fake function; used in case fake_ll is set */
static int
qeth_fake_header(struct sk_buff *skb, struct net_device *dev,
             unsigned short type, const void *daddr, const void *saddr,
             unsigned len)
{
      if(dev->type == ARPHRD_IEEE802_TR){
            struct trh_hdr *hdr;
            hdr = (struct trh_hdr *)skb_push(skb, QETH_FAKE_LL_LEN_TR);
            memcpy(hdr->saddr, dev->dev_addr, TR_ALEN);
            memcpy(hdr->daddr, "FAKELL", TR_ALEN);
            return QETH_FAKE_LL_LEN_TR;

      } else {
            struct ethhdr *hdr;
            hdr = (struct ethhdr *)skb_push(skb, QETH_FAKE_LL_LEN_ETH);
            memcpy(hdr->h_source, dev->dev_addr, ETH_ALEN);
            memcpy(hdr->h_dest, "FAKELL", ETH_ALEN);
            if (type != ETH_P_802_3)
                  hdr->h_proto = htons(type);
            else
                  hdr->h_proto = htons(len);
            return QETH_FAKE_LL_LEN_ETH;

      }
}

static const struct header_ops qeth_fake_ops = {
      .create     = qeth_fake_header,
      .parse  = qeth_hard_header_parse,
};

static int
qeth_send_packet(struct qeth_card *, struct sk_buff *);

static int
qeth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
      int rc;
      struct qeth_card *card;

      QETH_DBF_TEXT(trace, 6, "hrdstxmi");
      card = (struct qeth_card *)dev->priv;
      if (skb==NULL) {
            card->stats.tx_dropped++;
            card->stats.tx_errors++;
            /* return OK; otherwise ksoftirqd goes to 100% */
            return NETDEV_TX_OK;
      }
      if ((card->state != CARD_STATE_UP) || !card->lan_online) {
            card->stats.tx_dropped++;
            card->stats.tx_errors++;
            card->stats.tx_carrier_errors++;
            dev_kfree_skb_any(skb);
            /* return OK; otherwise ksoftirqd goes to 100% */
            return NETDEV_TX_OK;
      }
      if (card->options.performance_stats) {
            card->perf_stats.outbound_cnt++;
            card->perf_stats.outbound_start_time = qeth_get_micros();
      }
      netif_stop_queue(dev);
      if ((rc = qeth_send_packet(card, skb))) {
            if (rc == -EBUSY) {
                  return NETDEV_TX_BUSY;
            } else {
                  card->stats.tx_errors++;
                  card->stats.tx_dropped++;
                  dev_kfree_skb_any(skb);
                  /*set to OK; otherwise ksoftirqd goes to 100% */
                  rc = NETDEV_TX_OK;
            }
      }
      netif_wake_queue(dev);
      if (card->options.performance_stats)
            card->perf_stats.outbound_time += qeth_get_micros() -
                  card->perf_stats.outbound_start_time;
      return rc;
}

static int
qeth_verify_vlan_dev(struct net_device *dev, struct qeth_card *card)
{
      int rc = 0;
#ifdef CONFIG_QETH_VLAN
      struct vlan_group *vg;
      int i;

      if (!(vg = card->vlangrp))
            return rc;

      for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++){
            if (vlan_group_get_device(vg, i) == dev){
                  rc = QETH_VLAN_CARD;
                  break;
            }
      }
      if (rc && !(VLAN_DEV_INFO(dev)->real_dev->priv == (void *)card))
            return 0;

#endif
      return rc;
}

static int
qeth_verify_dev(struct net_device *dev)
{
      struct qeth_card *card;
      unsigned long flags;
      int rc = 0;

      read_lock_irqsave(&qeth_card_list.rwlock, flags);
      list_for_each_entry(card, &qeth_card_list.list, list){
            if (card->dev == dev){
                  rc = QETH_REAL_CARD;
                  break;
            }
            rc = qeth_verify_vlan_dev(dev, card);
            if (rc)
                  break;
      }
      read_unlock_irqrestore(&qeth_card_list.rwlock, flags);

      return rc;
}

static struct qeth_card *
qeth_get_card_from_dev(struct net_device *dev)
{
      struct qeth_card *card = NULL;
      int rc;

      rc = qeth_verify_dev(dev);
      if (rc == QETH_REAL_CARD)
            card = (struct qeth_card *)dev->priv;
      else if (rc == QETH_VLAN_CARD)
            card = (struct qeth_card *)
                  VLAN_DEV_INFO(dev)->real_dev->priv;

      QETH_DBF_TEXT_(trace, 4, "%d", rc);
      return card ;
}

static void
qeth_tx_timeout(struct net_device *dev)
{
      struct qeth_card *card;

      card = (struct qeth_card *) dev->priv;
      card->stats.tx_errors++;
      qeth_schedule_recovery(card);
}

static int
qeth_open(struct net_device *dev)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(trace, 4, "qethopen");

      card = (struct qeth_card *) dev->priv;

      if (card->state != CARD_STATE_SOFTSETUP)
            return -ENODEV;

      if ( (card->info.type != QETH_CARD_TYPE_OSN) &&
           (card->options.layer2) &&
           (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
            QETH_DBF_TEXT(trace,4,"nomacadr");
            return -EPERM;
      }
      card->data.state = CH_STATE_UP;
      card->state = CARD_STATE_UP;
      card->dev->flags |= IFF_UP;
      netif_start_queue(dev);

      if (!card->lan_online && netif_carrier_ok(dev))
            netif_carrier_off(dev);
      return 0;
}

static int
qeth_stop(struct net_device *dev)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(trace, 4, "qethstop");

      card = (struct qeth_card *) dev->priv;

      netif_tx_disable(dev);
      card->dev->flags &= ~IFF_UP;
      if (card->state == CARD_STATE_UP)
            card->state = CARD_STATE_SOFTSETUP;
      return 0;
}

static int
qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
      int cast_type = RTN_UNSPEC;

      if (card->info.type == QETH_CARD_TYPE_OSN)
            return cast_type;

      if (skb->dst && skb->dst->neighbour){
            cast_type = skb->dst->neighbour->type;
            if ((cast_type == RTN_BROADCAST) ||
                (cast_type == RTN_MULTICAST) ||
                (cast_type == RTN_ANYCAST))
                  return cast_type;
            else
                  return RTN_UNSPEC;
      }
      /* try something else */
      if (skb->protocol == ETH_P_IPV6)
            return (skb_network_header(skb)[24] == 0xff) ?
                        RTN_MULTICAST : 0;
      else if (skb->protocol == ETH_P_IP)
            return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
                        RTN_MULTICAST : 0;
      /* ... */
      if (!memcmp(skb->data, skb->dev->broadcast, 6))
            return RTN_BROADCAST;
      else {
            u16 hdr_mac;

              hdr_mac = *((u16 *)skb->data);
              /* tr multicast? */
              switch (card->info.link_type) {
              case QETH_LINK_TYPE_HSTR:
              case QETH_LINK_TYPE_LANE_TR:
                  if ((hdr_mac == QETH_TR_MAC_NC) ||
                      (hdr_mac == QETH_TR_MAC_C))
                        return RTN_MULTICAST;
                  break;
              /* eth or so multicast? */
                default:
                        if ((hdr_mac == QETH_ETH_MAC_V4) ||
                      (hdr_mac == QETH_ETH_MAC_V6))
                          return RTN_MULTICAST;
              }
        }
      return cast_type;
}

static int
qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
                    int ipv, int cast_type)
{
      if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
            return card->qdio.default_out_queue;
      switch (card->qdio.no_out_queues) {
      case 4:
            if (cast_type && card->info.is_multicast_different)
                  return card->info.is_multicast_different &
                        (card->qdio.no_out_queues - 1);
            if (card->qdio.do_prio_queueing && (ipv == 4)) {
                  const u8 tos = ip_hdr(skb)->tos;

                  if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_TOS){
                        if (tos & IP_TOS_NOTIMPORTANT)
                              return 3;
                        if (tos & IP_TOS_HIGHRELIABILITY)
                              return 2;
                        if (tos & IP_TOS_HIGHTHROUGHPUT)
                              return 1;
                        if (tos & IP_TOS_LOWDELAY)
                              return 0;
                  }
                  if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_PREC)
                        return 3 - (tos >> 6);
            } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
                  /* TODO: IPv6!!! */
            }
            return card->qdio.default_out_queue;
      case 1: /* fallthrough for single-out-queue 1920-device */
      default:
            return card->qdio.default_out_queue;
      }
}

static inline int
qeth_get_ip_version(struct sk_buff *skb)
{
      switch (skb->protocol) {
      case ETH_P_IPV6:
            return 6;
      case ETH_P_IP:
            return 4;
      default:
            return 0;
      }
}

static struct qeth_hdr *
__qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb, int ipv)
{
#ifdef CONFIG_QETH_VLAN
      u16 *tag;
      if (card->vlangrp && vlan_tx_tag_present(skb) &&
          ((ipv == 6) || card->options.layer2) ) {
            /*
             * Move the mac addresses (6 bytes src, 6 bytes dest)
             * to the beginning of the new header.  We are using three
             * memcpys instead of one memmove to save cycles.
             */
            skb_push(skb, VLAN_HLEN);
            skb_copy_to_linear_data(skb, skb->data + 4, 4);
            skb_copy_to_linear_data_offset(skb, 4, skb->data + 8, 4);
            skb_copy_to_linear_data_offset(skb, 8, skb->data + 12, 4);
            tag = (u16 *)(skb->data + 12);
            /*
             * first two bytes  = ETH_P_8021Q (0x8100)
             * second two bytes = VLANID
             */
            *tag = __constant_htons(ETH_P_8021Q);
            *(tag + 1) = htons(vlan_tx_tag_get(skb));
      }
#endif
      return ((struct qeth_hdr *)
            qeth_push_skb(card, skb, sizeof(struct qeth_hdr)));
}

static void
__qeth_free_new_skb(struct sk_buff *orig_skb, struct sk_buff *new_skb)
{
      if (orig_skb != new_skb)
            dev_kfree_skb_any(new_skb);
}

static struct sk_buff *
qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
             struct qeth_hdr **hdr, int ipv)
{
      struct sk_buff *new_skb, *new_skb2;
      
      QETH_DBF_TEXT(trace, 6, "prepskb");
      new_skb = skb;
      new_skb = qeth_pskb_unshare(skb, GFP_ATOMIC);
      if (!new_skb)
            return NULL;
      new_skb2 = qeth_realloc_headroom(card, new_skb,
                               sizeof(struct qeth_hdr));
      if (!new_skb2) {
            __qeth_free_new_skb(skb, new_skb);
            return NULL;
      }
      if (new_skb != skb)
            __qeth_free_new_skb(new_skb2, new_skb);
      new_skb = new_skb2;
      *hdr = __qeth_prepare_skb(card, new_skb, ipv);
      if (*hdr == NULL) {
            __qeth_free_new_skb(skb, new_skb);
            return NULL;
      }
      return new_skb;
}

static inline u8
qeth_get_qeth_hdr_flags4(int cast_type)
{
      if (cast_type == RTN_MULTICAST)
            return QETH_CAST_MULTICAST;
      if (cast_type == RTN_BROADCAST)
            return QETH_CAST_BROADCAST;
      return QETH_CAST_UNICAST;
}

static inline u8
qeth_get_qeth_hdr_flags6(int cast_type)
{
      u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
      if (cast_type == RTN_MULTICAST)
            return ct | QETH_CAST_MULTICAST;
      if (cast_type == RTN_ANYCAST)
            return ct | QETH_CAST_ANYCAST;
      if (cast_type == RTN_BROADCAST)
            return ct | QETH_CAST_BROADCAST;
      return ct | QETH_CAST_UNICAST;
}

static void
qeth_layer2_get_packet_type(struct qeth_card *card, struct qeth_hdr *hdr,
                      struct sk_buff *skb)
{
      __u16 hdr_mac;

      if (!memcmp(skb->data+QETH_HEADER_SIZE,
                skb->dev->broadcast,6)) { /* broadcast? */
            *(__u32 *)hdr->hdr.l2.flags |=
                   QETH_LAYER2_FLAG_BROADCAST << 8;
            return;
      }
      hdr_mac=*((__u16*)skb->data);
      /* tr multicast? */
      switch (card->info.link_type) {
      case QETH_LINK_TYPE_HSTR:
      case QETH_LINK_TYPE_LANE_TR:
            if ((hdr_mac == QETH_TR_MAC_NC) ||
                (hdr_mac == QETH_TR_MAC_C) )
                  *(__u32 *)hdr->hdr.l2.flags |=
                        QETH_LAYER2_FLAG_MULTICAST << 8;
            else
                  *(__u32 *)hdr->hdr.l2.flags |=
                        QETH_LAYER2_FLAG_UNICAST << 8;
            break;
            /* eth or so multicast? */
      default:
            if ( (hdr_mac==QETH_ETH_MAC_V4) ||
                 (hdr_mac==QETH_ETH_MAC_V6) )
                  *(__u32 *)hdr->hdr.l2.flags |=
                        QETH_LAYER2_FLAG_MULTICAST << 8;
            else
                  *(__u32 *)hdr->hdr.l2.flags |=
                        QETH_LAYER2_FLAG_UNICAST << 8;
      }
}

static void
qeth_layer2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
                  struct sk_buff *skb, int cast_type)
{
      memset(hdr, 0, sizeof(struct qeth_hdr));
      hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;

      /* set byte 0 to "0x02" and byte 3 to casting flags */
      if (cast_type==RTN_MULTICAST)
            *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_MULTICAST << 8;
      else if (cast_type==RTN_BROADCAST)
            *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_BROADCAST << 8;
       else
            qeth_layer2_get_packet_type(card, hdr, skb);

      hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
#ifdef CONFIG_QETH_VLAN
      /* VSWITCH relies on the VLAN
       * information to be present in
       * the QDIO header */
      if ((card->vlangrp != NULL) &&
          vlan_tx_tag_present(skb)) {
            *(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_VLAN << 8;
            hdr->hdr.l2.vlan_id = vlan_tx_tag_get(skb);
      }
#endif
}

void
qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
            struct sk_buff *skb, int ipv, int cast_type)
{
      QETH_DBF_TEXT(trace, 6, "fillhdr");

      memset(hdr, 0, sizeof(struct qeth_hdr));
      if (card->options.layer2) {
            qeth_layer2_fill_header(card, hdr, skb, cast_type);
            return;
      }
      hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
      hdr->hdr.l3.ext_flags = 0;
#ifdef CONFIG_QETH_VLAN
      /*
       * before we're going to overwrite this location with next hop ip.
       * v6 uses passthrough, v4 sets the tag in the QDIO header.
       */
      if (card->vlangrp && vlan_tx_tag_present(skb)) {
            hdr->hdr.l3.ext_flags = (ipv == 4) ?
                  QETH_HDR_EXT_VLAN_FRAME :
                  QETH_HDR_EXT_INCLUDE_VLAN_TAG;
            hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
      }
#endif /* CONFIG_QETH_VLAN */
      hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
      if (ipv == 4) {    /* IPv4 */
            hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags4(cast_type);
            memset(hdr->hdr.l3.dest_addr, 0, 12);
            if ((skb->dst) && (skb->dst->neighbour)) {
                  *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
                      *((u32 *) skb->dst->neighbour->primary_key);
            } else {
                  /* fill in destination address used in ip header */
                  *((u32 *)(&hdr->hdr.l3.dest_addr[12])) =
                                             ip_hdr(skb)->daddr;
            }
      } else if (ipv == 6) { /* IPv6 or passthru */
            hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags6(cast_type);
            if ((skb->dst) && (skb->dst->neighbour)) {
                  memcpy(hdr->hdr.l3.dest_addr,
                         skb->dst->neighbour->primary_key, 16);
            } else {
                  /* fill in destination address used in ip header */
                  memcpy(hdr->hdr.l3.dest_addr,
                         &ipv6_hdr(skb)->daddr, 16);
            }
      } else { /* passthrough */
                if((skb->dev->type == ARPHRD_IEEE802_TR) &&
                !memcmp(skb->data + sizeof(struct qeth_hdr) +
                sizeof(__u16), skb->dev->broadcast, 6)) {
                  hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
                                    QETH_HDR_PASSTHRU;
            } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
                      skb->dev->broadcast, 6)) {   /* broadcast? */
                  hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
                                    QETH_HDR_PASSTHRU;
            } else {
                  hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
                        QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
                        QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
            }
      }
}

static void
__qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
               int is_tso, int *next_element_to_fill)
{
      int length = skb->len;
      int length_here;
      int element;
      char *data;
      int first_lap ;

      element = *next_element_to_fill;
      data = skb->data;
      first_lap = (is_tso == 0 ? 1 : 0);

      while (length > 0) {
            /* length_here is the remaining amount of data in this page */
            length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
            if (length < length_here)
                  length_here = length;

            buffer->element[element].addr = data;
            buffer->element[element].length = length_here;
            length -= length_here;
            if (!length) {
                  if (first_lap)
                        buffer->element[element].flags = 0;
                  else
                        buffer->element[element].flags =
                            SBAL_FLAGS_LAST_FRAG;
            } else {
                  if (first_lap)
                        buffer->element[element].flags =
                            SBAL_FLAGS_FIRST_FRAG;
                  else
                        buffer->element[element].flags =
                            SBAL_FLAGS_MIDDLE_FRAG;
            }
            data += length_here;
            element++;
            first_lap = 0;
      }
      *next_element_to_fill = element;
}

static int
qeth_fill_buffer(struct qeth_qdio_out_q *queue,
             struct qeth_qdio_out_buffer *buf,
             struct sk_buff *skb)
{
      struct qdio_buffer *buffer;
      struct qeth_hdr_tso *hdr;
      int flush_cnt = 0, hdr_len, large_send = 0;

      QETH_DBF_TEXT(trace, 6, "qdfillbf");

      buffer = buf->buffer;
      atomic_inc(&skb->users);
      skb_queue_tail(&buf->skb_list, skb);

      hdr  = (struct qeth_hdr_tso *) skb->data;
      /*check first on TSO ....*/
      if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
            int element = buf->next_element_to_fill;

            hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
            /*fill first buffer entry only with header information */
            buffer->element[element].addr = skb->data;
            buffer->element[element].length = hdr_len;
            buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
            buf->next_element_to_fill++;
            skb->data += hdr_len;
            skb->len  -= hdr_len;
            large_send = 1;
      }
      if (skb_shinfo(skb)->nr_frags == 0)
            __qeth_fill_buffer(skb, buffer, large_send,
                           (int *)&buf->next_element_to_fill);
      else
            __qeth_fill_buffer_frag(skb, buffer, large_send,
                              (int *)&buf->next_element_to_fill);

      if (!queue->do_pack) {
            QETH_DBF_TEXT(trace, 6, "fillbfnp");
            /* set state to PRIMED -> will be flushed */
            atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
            flush_cnt = 1;
      } else {
            QETH_DBF_TEXT(trace, 6, "fillbfpa");
            if (queue->card->options.performance_stats)
                  queue->card->perf_stats.skbs_sent_pack++;
            if (buf->next_element_to_fill >=
                        QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
                  /*
                   * packed buffer if full -> set state PRIMED
                   * -> will be flushed
                   */
                  atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
                  flush_cnt = 1;
            }
      }
      return flush_cnt;
}

static int
qeth_do_send_packet_fast(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                   struct sk_buff *skb, struct qeth_hdr *hdr,
                   int elements_needed,
                   struct qeth_eddp_context *ctx)
{
      struct qeth_qdio_out_buffer *buffer;
      int buffers_needed = 0;
      int flush_cnt = 0;
      int index;

      QETH_DBF_TEXT(trace, 6, "dosndpfa");

      /* spin until we get the queue ... */
      while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
                        QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
      /* ... now we've got the queue */
      index = queue->next_buf_to_fill;
      buffer = &queue->bufs[queue->next_buf_to_fill];
      /*
       * check if buffer is empty to make sure that we do not 'overtake'
       * ourselves and try to fill a buffer that is already primed
       */
      if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) 
            goto out;
      if (ctx == NULL)
            queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
                                QDIO_MAX_BUFFERS_PER_Q;
      else {
            buffers_needed = qeth_eddp_check_buffers_for_context(queue,ctx);
            if (buffers_needed < 0) 
                  goto out;
            queue->next_buf_to_fill =
                  (queue->next_buf_to_fill + buffers_needed) %
                  QDIO_MAX_BUFFERS_PER_Q;
      }
      atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
      if (ctx == NULL) {
            qeth_fill_buffer(queue, buffer, skb);
            qeth_flush_buffers(queue, 0, index, 1);
      } else {
            flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
            WARN_ON(buffers_needed != flush_cnt);
            qeth_flush_buffers(queue, 0, index, flush_cnt);
      }
      return 0;
out:
      atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
      return -EBUSY;
}

static int
qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
                struct sk_buff *skb, struct qeth_hdr *hdr,
                int elements_needed, struct qeth_eddp_context *ctx)
{
      struct qeth_qdio_out_buffer *buffer;
      int start_index;
      int flush_count = 0;
      int do_pack = 0;
      int tmp;
      int rc = 0;

      QETH_DBF_TEXT(trace, 6, "dosndpkt");

      /* spin until we get the queue ... */
      while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
                        QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
      start_index = queue->next_buf_to_fill;
      buffer = &queue->bufs[queue->next_buf_to_fill];
      /*
       * check if buffer is empty to make sure that we do not 'overtake'
       * ourselves and try to fill a buffer that is already primed
       */
      if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
            atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
            return -EBUSY;
      }
      /* check if we need to switch packing state of this queue */
      qeth_switch_to_packing_if_needed(queue);
      if (queue->do_pack){
            do_pack = 1;
            if (ctx == NULL) {
                  /* does packet fit in current buffer? */
                  if((QETH_MAX_BUFFER_ELEMENTS(card) -
                      buffer->next_element_to_fill) < elements_needed){
                        /* ... no -> set state PRIMED */
                        atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
                        flush_count++;
                        queue->next_buf_to_fill =
                              (queue->next_buf_to_fill + 1) %
                              QDIO_MAX_BUFFERS_PER_Q;
                        buffer = &queue->bufs[queue->next_buf_to_fill];
                        /* we did a step forward, so check buffer state
                         * again */
                        if (atomic_read(&buffer->state) !=
                                    QETH_QDIO_BUF_EMPTY){
                              qeth_flush_buffers(queue, 0, start_index, flush_count);
                              atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
                              return -EBUSY;
                        }
                  }
            } else {
                  /* check if we have enough elements (including following
                   * free buffers) to handle eddp context */
                  if (qeth_eddp_check_buffers_for_context(queue,ctx) < 0){
                        if (net_ratelimit())
                              PRINT_WARN("eddp tx_dropped 1\n");
                        rc = -EBUSY;
                        goto out;
                  }
            }
      }
      if (ctx == NULL)
            tmp = qeth_fill_buffer(queue, buffer, skb);
      else {
            tmp = qeth_eddp_fill_buffer(queue,ctx,queue->next_buf_to_fill);
            if (tmp < 0) {
                  printk("eddp tx_dropped 2\n");
                  rc = - EBUSY;
                  goto out;
            }
      }
      queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
                          QDIO_MAX_BUFFERS_PER_Q;
      flush_count += tmp;
out:
      if (flush_count)
            qeth_flush_buffers(queue, 0, start_index, flush_count);
      else if (!atomic_read(&queue->set_pci_flags_count))
            atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
      /*
       * queue->state will go from LOCKED -> UNLOCKED or from
       * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
       * (switch packing state or flush buffer to get another pci flag out).
       * In that case we will enter this loop
       */
      while (atomic_dec_return(&queue->state)){
            flush_count = 0;
            start_index = queue->next_buf_to_fill;
            /* check if we can go back to non-packing state */
            flush_count += qeth_switch_to_nonpacking_if_needed(queue);
            /*
             * check if we need to flush a packing buffer to get a pci
             * flag out on the queue
             */
            if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
                  flush_count += qeth_flush_buffers_on_no_pci(queue);
            if (flush_count)
                  qeth_flush_buffers(queue, 0, start_index, flush_count);
      }
      /* at this point the queue is UNLOCKED again */
      if (queue->card->options.performance_stats && do_pack)
            queue->card->perf_stats.bufs_sent_pack += flush_count;

      return rc;
}

static int
qeth_get_elements_no(struct qeth_card *card, void *hdr,
                 struct sk_buff *skb, int elems)
{
      int elements_needed = 0;

        if (skb_shinfo(skb)->nr_frags > 0) 
                elements_needed = (skb_shinfo(skb)->nr_frags + 1);
        if (elements_needed == 0)
                elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
                                        + skb->len) >> PAGE_SHIFT);
      if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)){
                PRINT_ERR("Invalid size of IP packet "
                    "(Number=%d / Length=%d). Discarded.\n",
                          (elements_needed+elems), skb->len);
                return 0;
        }
        return elements_needed;
}

static void qeth_tx_csum(struct sk_buff *skb)
{
      int tlen;

      if (skb->protocol == htons(ETH_P_IP)) {
            tlen = ntohs(ip_hdr(skb)->tot_len) - (ip_hdr(skb)->ihl << 2);
            switch (ip_hdr(skb)->protocol) {
            case IPPROTO_TCP:
                  tcp_hdr(skb)->check = 0;
                  tcp_hdr(skb)->check = csum_tcpudp_magic(
                        ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
                        tlen, ip_hdr(skb)->protocol,
                        skb_checksum(skb, skb_transport_offset(skb),
                              tlen, 0));
                  break;
            case IPPROTO_UDP:
                  udp_hdr(skb)->check = 0;
                  udp_hdr(skb)->check = csum_tcpudp_magic(
                        ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
                        tlen, ip_hdr(skb)->protocol,
                        skb_checksum(skb, skb_transport_offset(skb),
                              tlen, 0));
                  break;
            }
      } else if (skb->protocol == htons(ETH_P_IPV6)) {
            switch (ipv6_hdr(skb)->nexthdr) {
            case IPPROTO_TCP:
                  tcp_hdr(skb)->check = 0;
                  tcp_hdr(skb)->check = csum_ipv6_magic(
                        &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
                        ipv6_hdr(skb)->payload_len,
                        ipv6_hdr(skb)->nexthdr,
                        skb_checksum(skb, skb_transport_offset(skb),
                              ipv6_hdr(skb)->payload_len, 0));
                  break;
            case IPPROTO_UDP:
                  udp_hdr(skb)->check = 0;
                  udp_hdr(skb)->check = csum_ipv6_magic(
                        &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
                        ipv6_hdr(skb)->payload_len,
                        ipv6_hdr(skb)->nexthdr,
                        skb_checksum(skb, skb_transport_offset(skb),
                              ipv6_hdr(skb)->payload_len, 0));
                  break;
            }
      }
}

static int
qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
{
      int ipv = 0;
      int cast_type;
      struct qeth_qdio_out_q *queue;
      struct qeth_hdr *hdr = NULL;
      int elements_needed = 0;
      enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
      struct qeth_eddp_context *ctx = NULL;
      int tx_bytes = skb->len;
      unsigned short nr_frags = skb_shinfo(skb)->nr_frags;
      unsigned short tso_size = skb_shinfo(skb)->gso_size;
      struct sk_buff *new_skb, *new_skb2;
      int rc;

      QETH_DBF_TEXT(trace, 6, "sendpkt");

      new_skb = skb;
      if ((card->info.type == QETH_CARD_TYPE_OSN) &&
          (skb->protocol == htons(ETH_P_IPV6)))
            return -EPERM;
      cast_type = qeth_get_cast_type(card, skb);
      if ((cast_type == RTN_BROADCAST) &&
          (card->info.broadcast_capable == 0))
            return -EPERM;
      queue = card->qdio.out_qs
            [qeth_get_priority_queue(card, skb, ipv, cast_type)];
      if (!card->options.layer2) {
            ipv = qeth_get_ip_version(skb);
            if ((card->dev->header_ops == &qeth_fake_ops) && ipv) {
                  new_skb = qeth_pskb_unshare(skb, GFP_ATOMIC);
                  if (!new_skb)
                        return -ENOMEM;
                  if(card->dev->type == ARPHRD_IEEE802_TR){
                        skb_pull(new_skb, QETH_FAKE_LL_LEN_TR);
                  } else {
                        skb_pull(new_skb, QETH_FAKE_LL_LEN_ETH);
                  }
            }
      }
      if (skb_is_gso(skb))
            large_send = card->options.large_send;
      /* check on OSN device*/
      if (card->info.type == QETH_CARD_TYPE_OSN)
            hdr = (struct qeth_hdr *)new_skb->data;
      /*are we able to do TSO ? */
      if ((large_send == QETH_LARGE_SEND_TSO) &&
          (cast_type == RTN_UNSPEC)) {
            rc = qeth_tso_prepare_packet(card, new_skb, ipv, cast_type);
            if (rc) {
                  __qeth_free_new_skb(skb, new_skb);
                  return rc;
            }
            elements_needed++;
      } else if (card->info.type != QETH_CARD_TYPE_OSN) {
            new_skb2 = qeth_prepare_skb(card, new_skb, &hdr, ipv);
            if (!new_skb2) {
                  __qeth_free_new_skb(skb, new_skb);
                  return -EINVAL;
            }
            if (new_skb != skb)
                  __qeth_free_new_skb(new_skb2, new_skb);
            new_skb = new_skb2;
            qeth_fill_header(card, hdr, new_skb, ipv, cast_type);
      }
      if (large_send == QETH_LARGE_SEND_EDDP) {
            ctx = qeth_eddp_create_context(card, new_skb, hdr,
                                     skb->sk->sk_protocol);
            if (ctx == NULL) {
                  __qeth_free_new_skb(skb, new_skb);
                  PRINT_WARN("could not create eddp context\n");
                  return -EINVAL;
            }
      } else {
            int elems = qeth_get_elements_no(card,(void*) hdr, new_skb,
                                     elements_needed);
            if (!elems) {
                  __qeth_free_new_skb(skb, new_skb);
                  return -EINVAL;
            }
            elements_needed += elems;
      }

      if ((large_send == QETH_LARGE_SEND_NO) &&
          (skb->ip_summed == CHECKSUM_PARTIAL))
            qeth_tx_csum(new_skb);

      if (card->info.type != QETH_CARD_TYPE_IQD)
            rc = qeth_do_send_packet(card, queue, new_skb, hdr,
                               elements_needed, ctx);
      else {
            if ((!card->options.layer2) &&
                (ipv == 0)) {
                  __qeth_free_new_skb(skb, new_skb);
                  return -EPERM;
            }
            rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
                                    elements_needed, ctx);
      }
      if (!rc) {
            card->stats.tx_packets++;
            card->stats.tx_bytes += tx_bytes;
            if (new_skb != skb)
                  dev_kfree_skb_any(skb);
            if (card->options.performance_stats) {
                  if (tso_size &&
                      !(large_send == QETH_LARGE_SEND_NO)) {
                        card->perf_stats.large_send_bytes += tx_bytes;
                        card->perf_stats.large_send_cnt++;
                  }
                  if (nr_frags > 0) {
                        card->perf_stats.sg_skbs_sent++;
                        /* nr_frags + skb->data */
                        card->perf_stats.sg_frags_sent +=
                              nr_frags + 1;
                  }
            }
      } else {
            card->stats.tx_dropped++;
            __qeth_free_new_skb(skb, new_skb);
      }
      if (ctx != NULL) {
            /* drop creator's reference */
            qeth_eddp_put_context(ctx);
            /* free skb; it's not referenced by a buffer */
            if (!rc)
                   dev_kfree_skb_any(new_skb);
      }
      return rc;
}

static int
qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
{
      struct qeth_card *card = (struct qeth_card *) dev->priv;
      int rc = 0;

      switch(regnum){
      case MII_BMCR: /* Basic mode control register */
            rc = BMCR_FULLDPLX;
            if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH)&&
                (card->info.link_type != QETH_LINK_TYPE_OSN) &&
                (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
                  rc |= BMCR_SPEED100;
            break;
      case MII_BMSR: /* Basic mode status register */
            rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
                 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
                 BMSR_100BASE4;
            break;
      case MII_PHYSID1: /* PHYS ID 1 */
            rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
                 dev->dev_addr[2];
            rc = (rc >> 5) & 0xFFFF;
            break;
      case MII_PHYSID2: /* PHYS ID 2 */
            rc = (dev->dev_addr[2] << 10) & 0xFFFF;
            break;
      case MII_ADVERTISE: /* Advertisement control reg */
            rc = ADVERTISE_ALL;
            break;
      case MII_LPA: /* Link partner ability reg */
            rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
                 LPA_100BASE4 | LPA_LPACK;
            break;
      case MII_EXPANSION: /* Expansion register */
            break;
      case MII_DCOUNTER: /* disconnect counter */
            break;
      case MII_FCSCOUNTER: /* false carrier counter */
            break;
      case MII_NWAYTEST: /* N-way auto-neg test register */
            break;
      case MII_RERRCOUNTER: /* rx error counter */
            rc = card->stats.rx_errors;
            break;
      case MII_SREVISION: /* silicon revision */
            break;
      case MII_RESV1: /* reserved 1 */
            break;
      case MII_LBRERROR: /* loopback, rx, bypass error */
            break;
      case MII_PHYADDR: /* physical address */
            break;
      case MII_RESV2: /* reserved 2 */
            break;
      case MII_TPISTATUS: /* TPI status for 10mbps */
            break;
      case MII_NCONFIG: /* network interface config */
            break;
      default:
            break;
      }
      return rc;
}


static const char *
qeth_arp_get_error_cause(int *rc)
{
      switch (*rc) {
      case QETH_IPA_ARP_RC_FAILED:
            *rc = -EIO;
            return "operation failed";
      case QETH_IPA_ARP_RC_NOTSUPP:
            *rc = -EOPNOTSUPP;
            return "operation not supported";
      case QETH_IPA_ARP_RC_OUT_OF_RANGE:
            *rc = -EINVAL;
            return "argument out of range";
      case QETH_IPA_ARP_RC_Q_NOTSUPP:
            *rc = -EOPNOTSUPP;
            return "query operation not supported";
      case QETH_IPA_ARP_RC_Q_NO_DATA:
            *rc = -ENOENT;
            return "no query data available";
      default:
            return "unknown error";
      }
}

static int
qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
                       __u16, long);

static int
qeth_arp_set_no_entries(struct qeth_card *card, int no_entries)
{
      int tmp;
      int rc;

      QETH_DBF_TEXT(trace,3,"arpstnoe");

      /*
       * currently GuestLAN only supports the ARP assist function
       * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
       * thus we say EOPNOTSUPP for this ARP function
       */
      if (card->info.guestlan)
            return -EOPNOTSUPP;
      if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }
      rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
                                IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
                                no_entries);
      if (rc) {
            tmp = rc;
            PRINT_WARN("Could not set number of ARP entries on %s: "
                     "%s (0x%x/%d)\n",
                     QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
                     tmp, tmp);
      }
      return rc;
}

static void
qeth_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
                           struct qeth_arp_query_data *qdata,
                         int entry_size, int uentry_size)
{
      char *entry_ptr;
      char *uentry_ptr;
      int i;

      entry_ptr = (char *)&qdata->data;
      uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
      for (i = 0; i < qdata->no_entries; ++i){
            /* strip off 32 bytes "media specific information" */
            memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
            entry_ptr += entry_size;
            uentry_ptr += uentry_size;
      }
}

static int
qeth_arp_query_cb(struct qeth_card *card, struct qeth_reply *reply,
              unsigned long data)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_arp_query_data *qdata;
      struct qeth_arp_query_info *qinfo;
      int entry_size;
      int uentry_size;
      int i;

      QETH_DBF_TEXT(trace,4,"arpquecb");

      qinfo = (struct qeth_arp_query_info *) reply->param;
      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(trace,4,"qaer1%i", cmd->hdr.return_code);
            return 0;
      }
      if (cmd->data.setassparms.hdr.return_code) {
            cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
            QETH_DBF_TEXT_(trace,4,"qaer2%i", cmd->hdr.return_code);
            return 0;
      }
      qdata = &cmd->data.setassparms.data.query_arp;
      switch(qdata->reply_bits){
      case 5:
            uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
            if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
                  uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
            break;
      case 7:
            /* fall through to default */
      default:
            /* tr is the same as eth -> entry7 */
            uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
            if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
                  uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
            break;
      }
      /* check if there is enough room in userspace */
      if ((qinfo->udata_len - qinfo->udata_offset) <
                  qdata->no_entries * uentry_size){
            QETH_DBF_TEXT_(trace, 4, "qaer3%i", -ENOMEM);
            cmd->hdr.return_code = -ENOMEM;
            PRINT_WARN("query ARP user space buffer is too small for "
                     "the returned number of ARP entries. "
                     "Aborting query!\n");
            goto out_error;
      }
      QETH_DBF_TEXT_(trace, 4, "anore%i",
                   cmd->data.setassparms.hdr.number_of_replies);
      QETH_DBF_TEXT_(trace, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
      QETH_DBF_TEXT_(trace, 4, "anoen%i", qdata->no_entries);

      if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
            /* strip off "media specific information" */
            qeth_copy_arp_entries_stripped(qinfo, qdata, entry_size,
                                     uentry_size);
      } else
            /*copy entries to user buffer*/
            memcpy(qinfo->udata + qinfo->udata_offset,
                   (char *)&qdata->data, qdata->no_entries*uentry_size);

      qinfo->no_entries += qdata->no_entries;
      qinfo->udata_offset += (qdata->no_entries*uentry_size);
      /* check if all replies received ... */
      if (cmd->data.setassparms.hdr.seq_no <
          cmd->data.setassparms.hdr.number_of_replies)
            return 1;
      memcpy(qinfo->udata, &qinfo->no_entries, 4);
      /* keep STRIP_ENTRIES flag so the user program can distinguish
       * stripped entries from normal ones */
      if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
            qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
      memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET,&qdata->reply_bits,2);
      return 0;
out_error:
      i = 0;
      memcpy(qinfo->udata, &i, 4);
      return 0;
}

static int
qeth_send_ipa_arp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
                  int len, int (*reply_cb)(struct qeth_card *,
                                     struct qeth_reply *,
                                     unsigned long),
                  void *reply_param)
{
      QETH_DBF_TEXT(trace,4,"sendarp");

      memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
      memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
      return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
                              reply_cb, reply_param);
}

static int
qeth_send_ipa_snmp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
                  int len, int (*reply_cb)(struct qeth_card *,
                                     struct qeth_reply *,
                                     unsigned long),
                  void *reply_param)
{
      u16 s1, s2;

      QETH_DBF_TEXT(trace,4,"sendsnmp");

      memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
      memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
      /* adjust PDU length fields in IPA_PDU_HEADER */
      s1 = (u32) IPA_PDU_HEADER_SIZE + len;
      s2 = (u32) len;
      memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
      return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
                              reply_cb, reply_param);
}

static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *, enum qeth_ipa_funcs,
                   __u16, __u16, enum qeth_prot_versions);
static int
qeth_arp_query(struct qeth_card *card, char __user *udata)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_arp_query_info qinfo = {0, };
      int tmp;
      int rc;

      QETH_DBF_TEXT(trace,3,"arpquery");

      if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
                         IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }
      /* get size of userspace buffer and mask_bits -> 6 bytes */
      if (copy_from_user(&qinfo, udata, 6))
            return -EFAULT;
      if (!(qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL)))
            return -ENOMEM;
      qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
      iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
                               IPA_CMD_ASS_ARP_QUERY_INFO,
                               sizeof(int),QETH_PROT_IPV4);

      rc = qeth_send_ipa_arp_cmd(card, iob,
                           QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
                           qeth_arp_query_cb, (void *)&qinfo);
      if (rc) {
            tmp = rc;
            PRINT_WARN("Error while querying ARP cache on %s: %s "
                     "(0x%x/%d)\n",
                     QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
                     tmp, tmp);
            if (copy_to_user(udata, qinfo.udata, 4))
                  rc = -EFAULT;
      } else {
            if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
                  rc = -EFAULT;
      }
      kfree(qinfo.udata);
      return rc;
}

/**
 * SNMP command callback
 */
static int
qeth_snmp_command_cb(struct qeth_card *card, struct qeth_reply *reply,
                 unsigned long sdata)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_arp_query_info *qinfo;
      struct qeth_snmp_cmd *snmp;
      unsigned char *data;
      __u16 data_len;

      QETH_DBF_TEXT(trace,3,"snpcmdcb");

      cmd = (struct qeth_ipa_cmd *) sdata;
      data = (unsigned char *)((char *)cmd - reply->offset);
      qinfo = (struct qeth_arp_query_info *) reply->param;
      snmp = &cmd->data.setadapterparms.data.snmp;

      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(trace,4,"scer1%i", cmd->hdr.return_code);
            return 0;
      }
      if (cmd->data.setadapterparms.hdr.return_code) {
            cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
            QETH_DBF_TEXT_(trace,4,"scer2%i", cmd->hdr.return_code);
            return 0;
      }
      data_len = *((__u16*)QETH_IPA_PDU_LEN_PDU1(data));
      if (cmd->data.setadapterparms.hdr.seq_no == 1)
            data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
      else
            data_len -= (__u16)((char*)&snmp->request - (char *)cmd);

      /* check if there is enough room in userspace */
      if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
            QETH_DBF_TEXT_(trace, 4, "scer3%i", -ENOMEM);
            cmd->hdr.return_code = -ENOMEM;
            return 0;
      }
      QETH_DBF_TEXT_(trace, 4, "snore%i",
                   cmd->data.setadapterparms.hdr.used_total);
      QETH_DBF_TEXT_(trace, 4, "sseqn%i", cmd->data.setadapterparms.hdr.seq_no);
      /*copy entries to user buffer*/
      if (cmd->data.setadapterparms.hdr.seq_no == 1) {
            memcpy(qinfo->udata + qinfo->udata_offset,
                   (char *)snmp,
                   data_len + offsetof(struct qeth_snmp_cmd,data));
            qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
      } else {
            memcpy(qinfo->udata + qinfo->udata_offset,
                   (char *)&snmp->request, data_len);
      }
      qinfo->udata_offset += data_len;
      /* check if all replies received ... */
            QETH_DBF_TEXT_(trace, 4, "srtot%i",
                         cmd->data.setadapterparms.hdr.used_total);
            QETH_DBF_TEXT_(trace, 4, "srseq%i",
                         cmd->data.setadapterparms.hdr.seq_no);
      if (cmd->data.setadapterparms.hdr.seq_no <
          cmd->data.setadapterparms.hdr.used_total)
            return 1;
      return 0;
}

static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *, enum qeth_ipa_cmds,
                   enum qeth_prot_versions );

static struct qeth_cmd_buffer *
qeth_get_adapter_cmd(struct qeth_card *card, __u32 command, __u32 cmdlen)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETADAPTERPARMS,
                             QETH_PROT_IPV4);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
      cmd->data.setadapterparms.hdr.command_code = command;
      cmd->data.setadapterparms.hdr.used_total = 1;
      cmd->data.setadapterparms.hdr.seq_no = 1;

      return iob;
}

/**
 * function to send SNMP commands to OSA-E card
 */
static int
qeth_snmp_command(struct qeth_card *card, char __user *udata)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;
      struct qeth_snmp_ureq *ureq;
      int req_len;
      struct qeth_arp_query_info qinfo = {0, };
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"snmpcmd");

      if (card->info.guestlan)
            return -EOPNOTSUPP;

      if ((!qeth_adp_supported(card,IPA_SETADP_SET_SNMP_CONTROL)) &&
          (!card->options.layer2) ) {
            PRINT_WARN("SNMP Query MIBS not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }
      /* skip 4 bytes (data_len struct member) to get req_len */
      if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
            return -EFAULT;
      ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
      if (!ureq) {
            QETH_DBF_TEXT(trace, 2, "snmpnome");
            return -ENOMEM;
      }
      if (copy_from_user(ureq, udata,
                  req_len+sizeof(struct qeth_snmp_ureq_hdr))){
            kfree(ureq);
            return -EFAULT;
      }
      qinfo.udata_len = ureq->hdr.data_len;
      if (!(qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL))){
            kfree(ureq);
            return -ENOMEM;
      }
      qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);

      iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
                           QETH_SNMP_SETADP_CMDLENGTH + req_len);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
      rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
                            qeth_snmp_command_cb, (void *)&qinfo);
      if (rc)
            PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
                     QETH_CARD_IFNAME(card), rc);
      else {
            if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
                  rc = -EFAULT;
      }

      kfree(ureq);
      kfree(qinfo.udata);
      return rc;
}

static int
qeth_default_setassparms_cb(struct qeth_card *, struct qeth_reply *,
                      unsigned long);

static int
qeth_default_setadapterparms_cb(struct qeth_card *card,
                                struct qeth_reply *reply,
                                unsigned long data);
static int
qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *,
                  __u16, long,
                  int (*reply_cb)
                  (struct qeth_card *, struct qeth_reply *, unsigned long),
                  void *reply_param);

static int
qeth_arp_add_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
      struct qeth_cmd_buffer *iob;
      char buf[16];
      int tmp;
      int rc;

      QETH_DBF_TEXT(trace,3,"arpadent");

      /*
       * currently GuestLAN only supports the ARP assist function
       * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
       * thus we say EOPNOTSUPP for this ARP function
       */
      if (card->info.guestlan)
            return -EOPNOTSUPP;
      if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }

      iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
                               IPA_CMD_ASS_ARP_ADD_ENTRY,
                               sizeof(struct qeth_arp_cache_entry),
                               QETH_PROT_IPV4);
      rc = qeth_send_setassparms(card, iob,
                           sizeof(struct qeth_arp_cache_entry),
                           (unsigned long) entry,
                           qeth_default_setassparms_cb, NULL);
      if (rc) {
            tmp = rc;
            qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
            PRINT_WARN("Could not add ARP entry for address %s on %s: "
                     "%s (0x%x/%d)\n",
                     buf, QETH_CARD_IFNAME(card),
                     qeth_arp_get_error_cause(&rc), tmp, tmp);
      }
      return rc;
}

static int
qeth_arp_remove_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
      struct qeth_cmd_buffer *iob;
      char buf[16] = {0, };
      int tmp;
      int rc;

      QETH_DBF_TEXT(trace,3,"arprment");

      /*
       * currently GuestLAN only supports the ARP assist function
       * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
       * thus we say EOPNOTSUPP for this ARP function
       */
      if (card->info.guestlan)
            return -EOPNOTSUPP;
      if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }
      memcpy(buf, entry, 12);
      iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
                               IPA_CMD_ASS_ARP_REMOVE_ENTRY,
                               12,
                               QETH_PROT_IPV4);
      rc = qeth_send_setassparms(card, iob,
                           12, (unsigned long)buf,
                           qeth_default_setassparms_cb, NULL);
      if (rc) {
            tmp = rc;
            memset(buf, 0, 16);
            qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
            PRINT_WARN("Could not delete ARP entry for address %s on %s: "
                     "%s (0x%x/%d)\n",
                     buf, QETH_CARD_IFNAME(card),
                     qeth_arp_get_error_cause(&rc), tmp, tmp);
      }
      return rc;
}

static int
qeth_arp_flush_cache(struct qeth_card *card)
{
      int rc;
      int tmp;

      QETH_DBF_TEXT(trace,3,"arpflush");

      /*
       * currently GuestLAN only supports the ARP assist function
       * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
       * thus we say EOPNOTSUPP for this ARP function
      */
      if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
            return -EOPNOTSUPP;
      if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }
      rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
                                IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
      if (rc){
            tmp = rc;
            PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
                     QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
                     tmp, tmp);
      }
      return rc;
}

static int
qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;
      struct qeth_arp_cache_entry arp_entry;
      struct mii_ioctl_data *mii_data;
      int rc = 0;

      if (!card)
            return -ENODEV;

      if ((card->state != CARD_STATE_UP) &&
            (card->state != CARD_STATE_SOFTSETUP))
            return -ENODEV;

      if (card->info.type == QETH_CARD_TYPE_OSN)
            return -EPERM;

      switch (cmd){
      case SIOC_QETH_ARP_SET_NO_ENTRIES:
            if ( !capable(CAP_NET_ADMIN) ||
                 (card->options.layer2) ) {
                  rc = -EPERM;
                  break;
            }
            rc = qeth_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
            break;
      case SIOC_QETH_ARP_QUERY_INFO:
            if ( !capable(CAP_NET_ADMIN) ||
                 (card->options.layer2) ) {
                  rc = -EPERM;
                  break;
            }
            rc = qeth_arp_query(card, rq->ifr_ifru.ifru_data);
            break;
      case SIOC_QETH_ARP_ADD_ENTRY:
            if ( !capable(CAP_NET_ADMIN) ||
                 (card->options.layer2) ) {
                  rc = -EPERM;
                  break;
            }
            if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
                           sizeof(struct qeth_arp_cache_entry)))
                  rc = -EFAULT;
            else
                  rc = qeth_arp_add_entry(card, &arp_entry);
            break;
      case SIOC_QETH_ARP_REMOVE_ENTRY:
            if ( !capable(CAP_NET_ADMIN) ||
                 (card->options.layer2) ) {
                  rc = -EPERM;
                  break;
            }
            if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
                           sizeof(struct qeth_arp_cache_entry)))
                  rc = -EFAULT;
            else
                  rc = qeth_arp_remove_entry(card, &arp_entry);
            break;
      case SIOC_QETH_ARP_FLUSH_CACHE:
            if ( !capable(CAP_NET_ADMIN) ||
                 (card->options.layer2) ) {
                  rc = -EPERM;
                  break;
            }
            rc = qeth_arp_flush_cache(card);
            break;
      case SIOC_QETH_ADP_SET_SNMP_CONTROL:
            rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
            break;
      case SIOC_QETH_GET_CARD_TYPE:
            if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
                !card->info.guestlan)
                  return 1;
            return 0;
            break;
      case SIOCGMIIPHY:
            mii_data = if_mii(rq);
            mii_data->phy_id = 0;
            break;
      case SIOCGMIIREG:
            mii_data = if_mii(rq);
            if (mii_data->phy_id != 0)
                  rc = -EINVAL;
            else
                  mii_data->val_out = qeth_mdio_read(dev,mii_data->phy_id,
                                             mii_data->reg_num);
            break;
      default:
            rc = -EOPNOTSUPP;
      }
      if (rc)
            QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
      return rc;
}

static struct net_device_stats *
qeth_get_stats(struct net_device *dev)
{
      struct qeth_card *card;

      card = (struct qeth_card *) (dev->priv);

      QETH_DBF_TEXT(trace,5,"getstat");

      return &card->stats;
}

static int
qeth_change_mtu(struct net_device *dev, int new_mtu)
{
      struct qeth_card *card;
      char dbf_text[15];

      card = (struct qeth_card *) (dev->priv);

      QETH_DBF_TEXT(trace,4,"chgmtu");
      sprintf(dbf_text, "%8x", new_mtu);
      QETH_DBF_TEXT(trace,4,dbf_text);

      if (new_mtu < 64)
            return -EINVAL;
      if (new_mtu > 65535)
            return -EINVAL;
      if ((!qeth_is_supported(card,IPA_IP_FRAGMENTATION)) &&
          (!qeth_mtu_is_valid(card, new_mtu)))
            return -EINVAL;
      dev->mtu = new_mtu;
      return 0;
}

#ifdef CONFIG_QETH_VLAN
static void
qeth_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
      struct qeth_card *card;
      unsigned long flags;

      QETH_DBF_TEXT(trace,4,"vlanreg");

      card = (struct qeth_card *) dev->priv;
      spin_lock_irqsave(&card->vlanlock, flags);
      card->vlangrp = grp;
      spin_unlock_irqrestore(&card->vlanlock, flags);
}

static void
qeth_free_vlan_buffer(struct qeth_card *card, struct qeth_qdio_out_buffer *buf,
                  unsigned short vid)
{
      int i;
      struct sk_buff *skb;
      struct sk_buff_head tmp_list;

      skb_queue_head_init(&tmp_list);
      lockdep_set_class(&tmp_list.lock, &qdio_out_skb_queue_key);
      for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
            while ((skb = skb_dequeue(&buf->skb_list))){
                  if (vlan_tx_tag_present(skb) &&
                      (vlan_tx_tag_get(skb) == vid)) {
                        atomic_dec(&skb->users);
                        dev_kfree_skb(skb);
                  } else
                        skb_queue_tail(&tmp_list, skb);
            }
      }
      while ((skb = skb_dequeue(&tmp_list)))
            skb_queue_tail(&buf->skb_list, skb);
}

static void
qeth_free_vlan_skbs(struct qeth_card *card, unsigned short vid)
{
      int i, j;

      QETH_DBF_TEXT(trace, 4, "frvlskbs");
      for (i = 0; i < card->qdio.no_out_queues; ++i){
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
                  qeth_free_vlan_buffer(card, &card->qdio.
                                    out_qs[i]->bufs[j], vid);
      }
}

static void
qeth_free_vlan_addresses4(struct qeth_card *card, unsigned short vid)
{
      struct in_device *in_dev;
      struct in_ifaddr *ifa;
      struct qeth_ipaddr *addr;

      QETH_DBF_TEXT(trace, 4, "frvaddr4");

      rcu_read_lock();
      in_dev = __in_dev_get_rcu(vlan_group_get_device(card->vlangrp, vid));
      if (!in_dev)
            goto out;
      for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
            addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
            if (addr){
                  addr->u.a4.addr = ifa->ifa_address;
                  addr->u.a4.mask = ifa->ifa_mask;
                  addr->type = QETH_IP_TYPE_NORMAL;
                  if (!qeth_delete_ip(card, addr))
                        kfree(addr);
            }
      }
out:
      rcu_read_unlock();
}

static void
qeth_free_vlan_addresses6(struct qeth_card *card, unsigned short vid)
{
#ifdef CONFIG_QETH_IPV6
      struct inet6_dev *in6_dev;
      struct inet6_ifaddr *ifa;
      struct qeth_ipaddr *addr;

      QETH_DBF_TEXT(trace, 4, "frvaddr6");

      in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
      if (!in6_dev)
            return;
      for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next){
            addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
            if (addr){
                  memcpy(&addr->u.a6.addr, &ifa->addr,
                         sizeof(struct in6_addr));
                  addr->u.a6.pfxlen = ifa->prefix_len;
                  addr->type = QETH_IP_TYPE_NORMAL;
                  if (!qeth_delete_ip(card, addr))
                        kfree(addr);
            }
      }
      in6_dev_put(in6_dev);
#endif /* CONFIG_QETH_IPV6 */
}

static void
qeth_free_vlan_addresses(struct qeth_card *card, unsigned short vid)
{
      if (card->options.layer2 || !card->vlangrp)
            return;
      qeth_free_vlan_addresses4(card, vid);
      qeth_free_vlan_addresses6(card, vid);
}

static int
qeth_layer2_send_setdelvlan_cb(struct qeth_card *card,
                               struct qeth_reply *reply,
                               unsigned long data)
{
        struct qeth_ipa_cmd *cmd;

        QETH_DBF_TEXT(trace, 2, "L2sdvcb");
        cmd = (struct qeth_ipa_cmd *) data;
        if (cmd->hdr.return_code) {
            PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
                    "Continuing\n",cmd->data.setdelvlan.vlan_id,
                    QETH_CARD_IFNAME(card), cmd->hdr.return_code);
            QETH_DBF_TEXT_(trace, 2, "L2VL%4x", cmd->hdr.command);
            QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
            QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
      }
        return 0;
}

static int
qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
                      enum qeth_ipa_cmds ipacmd)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT_(trace, 4, "L2sdv%x",ipacmd);
      iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
        cmd->data.setdelvlan.vlan_id = i;
      return qeth_send_ipa_cmd(card, iob,
                         qeth_layer2_send_setdelvlan_cb, NULL);
}

static void
qeth_layer2_process_vlans(struct qeth_card *card, int clear)
{
        unsigned short  i;

      QETH_DBF_TEXT(trace, 3, "L2prcvln");

      if (!card->vlangrp)
            return;
      for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
            if (vlan_group_get_device(card->vlangrp, i) == NULL)
                  continue;
            if (clear)
                  qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
            else
                  qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
        }
}

/*add_vid is layer 2 used only ....*/
static void
qeth_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
{
      struct qeth_card *card;

      QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);

      card = (struct qeth_card *) dev->priv;
      if (!card->options.layer2)
            return;
      qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
}

/*... kill_vid used for both modes*/
static void
qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
      struct qeth_card *card;
      unsigned long flags;

      QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);

      card = (struct qeth_card *) dev->priv;
      /* free all skbs for the vlan device */
      qeth_free_vlan_skbs(card, vid);
      spin_lock_irqsave(&card->vlanlock, flags);
      /* unregister IP addresses of vlan device */
      qeth_free_vlan_addresses(card, vid);
      vlan_group_set_device(card->vlangrp, vid, NULL);
      spin_unlock_irqrestore(&card->vlanlock, flags);
      if (card->options.layer2)
            qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
      qeth_set_multicast_list(card->dev);
}
#endif
/**
 * Examine hardware response to SET_PROMISC_MODE
 */
static int
qeth_setadp_promisc_mode_cb(struct qeth_card *card,
                      struct qeth_reply *reply,
                      unsigned long data)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_ipacmd_setadpparms *setparms;

      QETH_DBF_TEXT(trace,4,"prmadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      setparms = &(cmd->data.setadapterparms);

        qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(trace,4,"prmrc%2.2x",cmd->hdr.return_code);
            setparms->data.mode = SET_PROMISC_MODE_OFF;
      }
      card->info.promisc_mode = setparms->data.mode;
      return 0;
}
/*
 * Set promiscuous mode (on or off) (SET_PROMISC_MODE command)
 */
static void
qeth_setadp_promisc_mode(struct qeth_card *card)
{
      enum qeth_ipa_promisc_modes mode;
      struct net_device *dev = card->dev;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace, 4, "setprom");

      if (((dev->flags & IFF_PROMISC) &&
           (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
          (!(dev->flags & IFF_PROMISC) &&
           (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
            return;
      mode = SET_PROMISC_MODE_OFF;
      if (dev->flags & IFF_PROMISC)
            mode = SET_PROMISC_MODE_ON;
      QETH_DBF_TEXT_(trace, 4, "mode:%x", mode);

      iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
                  sizeof(struct qeth_ipacmd_setadpparms));
      cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.data.mode = mode;
      qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
}

/**
 * set multicast address on card
 */
static void
qeth_set_multicast_list(struct net_device *dev)
{
      struct qeth_card *card = (struct qeth_card *) dev->priv;

      if (card->info.type == QETH_CARD_TYPE_OSN)
            return ;

      QETH_DBF_TEXT(trace, 3, "setmulti");
      qeth_delete_mc_addresses(card);
      if (card->options.layer2) {
            qeth_layer2_add_multicast(card);
            goto out;
      }
      qeth_add_multicast_ipv4(card);
#ifdef CONFIG_QETH_IPV6
      qeth_add_multicast_ipv6(card);
#endif
out:
      qeth_set_ip_addr_list(card);
      if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
            return;
      qeth_setadp_promisc_mode(card);
}

static int
qeth_neigh_setup(struct net_device *dev, struct neigh_parms *np)
{
      return 0;
}

static void
qeth_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev)
{
      if (dev->type == ARPHRD_IEEE802_TR)
            ip_tr_mc_map(ipm, mac);
      else
            ip_eth_mc_map(ipm, mac);
}

static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions prot)
{
      struct qeth_ipaddr *addr;

      addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
      if (addr == NULL) {
            PRINT_WARN("Not enough memory to add address\n");
            return NULL;
      }
      addr->type = QETH_IP_TYPE_NORMAL;
      addr->proto = prot;
      return addr;
}

int
qeth_osn_assist(struct net_device *dev,
            void *data,
            int data_len)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_card *card;
      int rc;

      QETH_DBF_TEXT(trace, 2, "osnsdmc");
      if (!dev)
            return -ENODEV;
      card = (struct qeth_card *)dev->priv;
      if (!card)
            return -ENODEV;
      if ((card->state != CARD_STATE_UP) &&
          (card->state != CARD_STATE_SOFTSETUP))
            return -ENODEV;
      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
      rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
      return rc;
}

static struct net_device *
qeth_netdev_by_devno(unsigned char *read_dev_no)
{
      struct qeth_card *card;
      struct net_device *ndev;
      unsigned char *readno;
      __u16 temp_dev_no, card_dev_no;
      char *endp;
      unsigned long flags;

      ndev = NULL;
      memcpy(&temp_dev_no, read_dev_no, 2);
      read_lock_irqsave(&qeth_card_list.rwlock, flags);
      list_for_each_entry(card, &qeth_card_list.list, list) {
            readno = CARD_RDEV_ID(card);
            readno += (strlen(readno) - 4);
            card_dev_no = simple_strtoul(readno, &endp, 16);
            if (card_dev_no == temp_dev_no) {
                  ndev = card->dev;
                  break;
            }
      }
      read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
      return ndev;
}

int
qeth_osn_register(unsigned char *read_dev_no,
              struct net_device **dev,
              int (*assist_cb)(struct net_device *, void *),
              int (*data_cb)(struct sk_buff *))
{
      struct qeth_card * card;

      QETH_DBF_TEXT(trace, 2, "osnreg");
      *dev = qeth_netdev_by_devno(read_dev_no);
      if (*dev == NULL)
            return -ENODEV;
      card = (struct qeth_card *)(*dev)->priv;
      if (!card)
            return -ENODEV;
      if ((assist_cb == NULL) || (data_cb == NULL))
            return -EINVAL;
      card->osn_info.assist_cb = assist_cb;
      card->osn_info.data_cb = data_cb;
      return 0;
}

void
qeth_osn_deregister(struct net_device * dev)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(trace, 2, "osndereg");
      if (!dev)
            return;
      card = (struct qeth_card *)dev->priv;
      if (!card)
            return;
      card->osn_info.assist_cb = NULL;
      card->osn_info.data_cb = NULL;
      return;
}

static void
qeth_delete_mc_addresses(struct qeth_card *card)
{
      struct qeth_ipaddr *iptodo;
      unsigned long flags;

      QETH_DBF_TEXT(trace,4,"delmc");
      iptodo = qeth_get_addr_buffer(QETH_PROT_IPV4);
      if (!iptodo) {
            QETH_DBF_TEXT(trace, 2, "dmcnomem");
            return;
      }
      iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
      spin_lock_irqsave(&card->ip_lock, flags);
      if (!__qeth_insert_ip_todo(card, iptodo, 0))
            kfree(iptodo);
      spin_unlock_irqrestore(&card->ip_lock, flags);
}

static void
qeth_add_mc(struct qeth_card *card, struct in_device *in4_dev)
{
      struct qeth_ipaddr *ipm;
      struct ip_mc_list *im4;
      char buf[MAX_ADDR_LEN];

      QETH_DBF_TEXT(trace,4,"addmc");
      for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
            qeth_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
            ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
            if (!ipm)
                  continue;
            ipm->u.a4.addr = im4->multiaddr;
            memcpy(ipm->mac,buf,OSA_ADDR_LEN);
            ipm->is_multicast = 1;
            if (!qeth_add_ip(card,ipm))
                  kfree(ipm);
      }
}

static inline void
qeth_add_vlan_mc(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
      struct in_device *in_dev;
      struct vlan_group *vg;
      int i;

      QETH_DBF_TEXT(trace,4,"addmcvl");
      if ( ((card->options.layer2 == 0) &&
            (!qeth_is_supported(card,IPA_FULL_VLAN))) ||
           (card->vlangrp == NULL) )
            return ;

      vg = card->vlangrp;
      for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
            struct net_device *netdev = vlan_group_get_device(vg, i);
            if (netdev == NULL ||
                !(netdev->flags & IFF_UP))
                  continue;
            in_dev = in_dev_get(netdev);
            if (!in_dev)
                  continue;
            read_lock(&in_dev->mc_list_lock);
            qeth_add_mc(card,in_dev);
            read_unlock(&in_dev->mc_list_lock);
            in_dev_put(in_dev);
      }
#endif
}

static void
qeth_add_multicast_ipv4(struct qeth_card *card)
{
      struct in_device *in4_dev;

      QETH_DBF_TEXT(trace,4,"chkmcv4");
      in4_dev = in_dev_get(card->dev);
      if (in4_dev == NULL)
            return;
      read_lock(&in4_dev->mc_list_lock);
      qeth_add_mc(card, in4_dev);
      qeth_add_vlan_mc(card);
      read_unlock(&in4_dev->mc_list_lock);
      in_dev_put(in4_dev);
}

static void
qeth_layer2_add_multicast(struct qeth_card *card)
{
      struct qeth_ipaddr *ipm;
      struct dev_mc_list *dm;

      QETH_DBF_TEXT(trace,4,"L2addmc");
      for (dm = card->dev->mc_list; dm; dm = dm->next) {
            ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
            if (!ipm)
                  continue;
            memcpy(ipm->mac,dm->dmi_addr,MAX_ADDR_LEN);
            ipm->is_multicast = 1;
            if (!qeth_add_ip(card, ipm))
                  kfree(ipm);
      }
}

#ifdef CONFIG_QETH_IPV6
static void
qeth_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
{
      struct qeth_ipaddr *ipm;
      struct ifmcaddr6 *im6;
      char buf[MAX_ADDR_LEN];

      QETH_DBF_TEXT(trace,4,"addmc6");
      for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
            ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
            ipm = qeth_get_addr_buffer(QETH_PROT_IPV6);
            if (!ipm)
                  continue;
            ipm->is_multicast = 1;
            memcpy(ipm->mac,buf,OSA_ADDR_LEN);
            memcpy(&ipm->u.a6.addr,&im6->mca_addr.s6_addr,
                   sizeof(struct in6_addr));
            if (!qeth_add_ip(card,ipm))
                  kfree(ipm);
      }
}

static inline void
qeth_add_vlan_mc6(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
      struct inet6_dev *in_dev;
      struct vlan_group *vg;
      int i;

      QETH_DBF_TEXT(trace,4,"admc6vl");
      if ( ((card->options.layer2 == 0) &&
            (!qeth_is_supported(card,IPA_FULL_VLAN))) ||
           (card->vlangrp == NULL))
            return ;

      vg = card->vlangrp;
      for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
            struct net_device *netdev = vlan_group_get_device(vg, i);
            if (netdev == NULL ||
                !(netdev->flags & IFF_UP))
                  continue;
            in_dev = in6_dev_get(netdev);
            if (!in_dev)
                  continue;
            read_lock_bh(&in_dev->lock);
            qeth_add_mc6(card,in_dev);
            read_unlock_bh(&in_dev->lock);
            in6_dev_put(in_dev);
      }
#endif /* CONFIG_QETH_VLAN */
}

static void
qeth_add_multicast_ipv6(struct qeth_card *card)
{
      struct inet6_dev *in6_dev;

      QETH_DBF_TEXT(trace,4,"chkmcv6");
      if (!qeth_is_supported(card, IPA_IPV6))
            return ;
      in6_dev = in6_dev_get(card->dev);
      if (in6_dev == NULL)
            return;
      read_lock_bh(&in6_dev->lock);
      qeth_add_mc6(card, in6_dev);
      qeth_add_vlan_mc6(card);
      read_unlock_bh(&in6_dev->lock);
      in6_dev_put(in6_dev);
}
#endif /* CONFIG_QETH_IPV6 */

static int
qeth_layer2_send_setdelmac(struct qeth_card *card, __u8 *mac,
                     enum qeth_ipa_cmds ipacmd,
                     int (*reply_cb) (struct qeth_card *,
                                  struct qeth_reply*,
                                  unsigned long))
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace, 2, "L2sdmac");
      iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
        cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
        memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
      return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
}

static int
qeth_layer2_send_setgroupmac_cb(struct qeth_card *card,
                        struct qeth_reply *reply,
                        unsigned long data)
{
      struct qeth_ipa_cmd *cmd;
      __u8 *mac;

      QETH_DBF_TEXT(trace, 2, "L2Sgmacb");
      cmd = (struct qeth_ipa_cmd *) data;
      mac = &cmd->data.setdelmac.mac[0];
      /* MAC already registered, needed in couple/uncouple case */
      if (cmd->hdr.return_code == 0x2005) {
            PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
                    "already existing on %s \n",
                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
                    QETH_CARD_IFNAME(card));
            cmd->hdr.return_code = 0;
      }
      if (cmd->hdr.return_code)
            PRINT_ERR("Could not set group MAC " \
                    "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
                    QETH_CARD_IFNAME(card),cmd->hdr.return_code);
      return 0;
}

static int
qeth_layer2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
{
      QETH_DBF_TEXT(trace, 2, "L2Sgmac");
      return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
                                qeth_layer2_send_setgroupmac_cb);
}

static int
qeth_layer2_send_delgroupmac_cb(struct qeth_card *card,
                        struct qeth_reply *reply,
                        unsigned long data)
{
      struct qeth_ipa_cmd *cmd;
      __u8 *mac;

      QETH_DBF_TEXT(trace, 2, "L2Dgmacb");
      cmd = (struct qeth_ipa_cmd *) data;
      mac = &cmd->data.setdelmac.mac[0];
      if (cmd->hdr.return_code)
            PRINT_ERR("Could not delete group MAC " \
                    "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
                    QETH_CARD_IFNAME(card), cmd->hdr.return_code);
      return 0;
}

static int
qeth_layer2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
{
      QETH_DBF_TEXT(trace, 2, "L2Dgmac");
      return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
                                qeth_layer2_send_delgroupmac_cb);
}

static int
qeth_layer2_send_setmac_cb(struct qeth_card *card,
                     struct qeth_reply *reply,
                     unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace, 2, "L2Smaccb");
      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code);
            card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
            cmd->hdr.return_code = -EIO;
      } else {
            card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
            memcpy(card->dev->dev_addr,cmd->data.setdelmac.mac,
                   OSA_ADDR_LEN);
            PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
                     "successfully registered on device %s\n",
                     card->dev->dev_addr[0], card->dev->dev_addr[1],
                     card->dev->dev_addr[2], card->dev->dev_addr[3],
                     card->dev->dev_addr[4], card->dev->dev_addr[5],
                     card->dev->name);
      }
      return 0;
}

static int
qeth_layer2_send_setmac(struct qeth_card *card, __u8 *mac)
{
      QETH_DBF_TEXT(trace, 2, "L2Setmac");
      return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
                                qeth_layer2_send_setmac_cb);
}

static int
qeth_layer2_send_delmac_cb(struct qeth_card *card,
                     struct qeth_reply *reply,
                     unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace, 2, "L2Dmaccb");
      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
            cmd->hdr.return_code = -EIO;
            return 0;
      }
      card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;

      return 0;
}
static int
qeth_layer2_send_delmac(struct qeth_card *card, __u8 *mac)
{
      QETH_DBF_TEXT(trace, 2, "L2Delmac");
      if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
            return 0;
      return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
                                qeth_layer2_send_delmac_cb);
}

static int
qeth_layer2_set_mac_address(struct net_device *dev, void *p)
{
      struct sockaddr *addr = p;
      struct qeth_card *card;
      int rc = 0;

      QETH_DBF_TEXT(trace, 3, "setmac");

      if (qeth_verify_dev(dev) != QETH_REAL_CARD) {
            QETH_DBF_TEXT(trace, 3, "setmcINV");
            return -EOPNOTSUPP;
      }
      card = (struct qeth_card *) dev->priv;

      if (!card->options.layer2) {
            PRINT_WARN("Setting MAC address on %s is not supported "
                     "in Layer 3 mode.\n", dev->name);
            QETH_DBF_TEXT(trace, 3, "setmcLY3");
            return -EOPNOTSUPP;
      }
      if (card->info.type == QETH_CARD_TYPE_OSN) {
            PRINT_WARN("Setting MAC address on %s is not supported.\n",
                     dev->name);
            QETH_DBF_TEXT(trace, 3, "setmcOSN");
            return -EOPNOTSUPP;
      }
      QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card));
      QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN);
      rc = qeth_layer2_send_delmac(card, &card->dev->dev_addr[0]);
      if (!rc)
            rc = qeth_layer2_send_setmac(card, addr->sa_data);
      return rc;
}

static void
qeth_fill_ipacmd_header(struct qeth_card *card, struct qeth_ipa_cmd *cmd,
                  __u8 command, enum qeth_prot_versions prot)
{
      memset(cmd, 0, sizeof (struct qeth_ipa_cmd));
      cmd->hdr.command = command;
      cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
      cmd->hdr.seqno = card->seqno.ipa;
      cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
      cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
      if (card->options.layer2)
            cmd->hdr.prim_version_no = 2;
      else
            cmd->hdr.prim_version_no = 1;
      cmd->hdr.param_count = 1;
      cmd->hdr.prot_version = prot;
      cmd->hdr.ipa_supported = 0;
      cmd->hdr.ipa_enabled = 0;
}

static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
                   enum qeth_prot_versions prot)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      iob = qeth_wait_for_buffer(&card->write);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);

      return iob;
}

static int
qeth_send_setdelmc(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd)
{
      int rc;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"setdelmc");

      iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      memcpy(&cmd->data.setdelipm.mac,addr->mac, OSA_ADDR_LEN);
      if (addr->proto == QETH_PROT_IPV6)
            memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
                   sizeof(struct in6_addr));
      else
            memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr,4);

      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

      return rc;
}
static void
qeth_fill_netmask(u8 *netmask, unsigned int len)
{
      int i,j;
      for (i=0;i<16;i++) {
            j=(len)-(i*8);
            if (j >= 8)
                  netmask[i] = 0xff;
            else if (j > 0)
                  netmask[i] = (u8)(0xFF00>>j);
            else
                  netmask[i] = 0;
      }
}

static int
qeth_send_setdelip(struct qeth_card *card, struct qeth_ipaddr *addr,
               int ipacmd, unsigned int flags)
{
      int rc;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;
      __u8 netmask[16];

      QETH_DBF_TEXT(trace,4,"setdelip");
      QETH_DBF_TEXT_(trace,4,"flags%02X", flags);

      iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      if (addr->proto == QETH_PROT_IPV6) {
            memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
                   sizeof(struct in6_addr));
            qeth_fill_netmask(netmask,addr->u.a6.pfxlen);
            memcpy(cmd->data.setdelip6.mask, netmask,
                   sizeof(struct in6_addr));
            cmd->data.setdelip6.flags = flags;
      } else {
            memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
            memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
            cmd->data.setdelip4.flags = flags;
      }

      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

      return rc;
}

static int
qeth_layer2_register_addr_entry(struct qeth_card *card,
                        struct qeth_ipaddr *addr)
{
      if (!addr->is_multicast)
            return 0;
      QETH_DBF_TEXT(trace, 2, "setgmac");
      QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
      return qeth_layer2_send_setgroupmac(card, &addr->mac[0]);
}

static int
qeth_layer2_deregister_addr_entry(struct qeth_card *card,
                          struct qeth_ipaddr *addr)
{
      if (!addr->is_multicast)
            return 0;
      QETH_DBF_TEXT(trace, 2, "delgmac");
      QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
      return qeth_layer2_send_delgroupmac(card, &addr->mac[0]);
}

static int
qeth_layer3_register_addr_entry(struct qeth_card *card,
                        struct qeth_ipaddr *addr)
{
      char buf[50];
      int rc;
      int cnt = 3;

      if (addr->proto == QETH_PROT_IPV4) {
            QETH_DBF_TEXT(trace, 2,"setaddr4");
            QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
      } else if (addr->proto == QETH_PROT_IPV6) {
            QETH_DBF_TEXT(trace, 2, "setaddr6");
            QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
            QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
      } else {
            QETH_DBF_TEXT(trace, 2, "setaddr?");
            QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
      }
      do {
            if (addr->is_multicast)
                  rc =  qeth_send_setdelmc(card, addr, IPA_CMD_SETIPM);
            else
                  rc = qeth_send_setdelip(card, addr, IPA_CMD_SETIP,
                              addr->set_flags);
            if (rc)
                  QETH_DBF_TEXT(trace, 2, "failed");
      } while ((--cnt > 0) && rc);
      if (rc){
            QETH_DBF_TEXT(trace, 2, "FAILED");
            qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
            PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
                     buf, rc, rc);
      }
      return rc;
}

static int
qeth_layer3_deregister_addr_entry(struct qeth_card *card,
                          struct qeth_ipaddr *addr)
{
      //char buf[50];
      int rc;

      if (addr->proto == QETH_PROT_IPV4) {
            QETH_DBF_TEXT(trace, 2,"deladdr4");
            QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
      } else if (addr->proto == QETH_PROT_IPV6) {
            QETH_DBF_TEXT(trace, 2, "deladdr6");
            QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
            QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
      } else {
            QETH_DBF_TEXT(trace, 2, "deladdr?");
            QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
      }
      if (addr->is_multicast)
            rc = qeth_send_setdelmc(card, addr, IPA_CMD_DELIPM);
      else
            rc = qeth_send_setdelip(card, addr, IPA_CMD_DELIP,
                              addr->del_flags);
      if (rc) {
            QETH_DBF_TEXT(trace, 2, "failed");
            /* TODO: re-activate this warning as soon as we have a
             * clean mirco code
            qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
            PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
                     buf, rc);
            */
      }
      return rc;
}

static int
qeth_register_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
      if (card->options.layer2)
            return qeth_layer2_register_addr_entry(card, addr);

      return qeth_layer3_register_addr_entry(card, addr);
}

static int
qeth_deregister_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
      if (card->options.layer2)
            return qeth_layer2_deregister_addr_entry(card, addr);

      return qeth_layer3_deregister_addr_entry(card, addr);
}

static u32
qeth_ethtool_get_tx_csum(struct net_device *dev)
{
      return (dev->features & NETIF_F_HW_CSUM) != 0;
}

static int
qeth_ethtool_set_tx_csum(struct net_device *dev, u32 data)
{
      if (data)
            dev->features |= NETIF_F_HW_CSUM;
      else
            dev->features &= ~NETIF_F_HW_CSUM;

      return 0;
}

static u32
qeth_ethtool_get_rx_csum(struct net_device *dev)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      return (card->options.checksum_type == HW_CHECKSUMMING);
}

static int
qeth_ethtool_set_rx_csum(struct net_device *dev, u32 data)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      if ((card->state != CARD_STATE_DOWN) &&
          (card->state != CARD_STATE_RECOVER))
            return -EPERM;
      if (data)
            card->options.checksum_type = HW_CHECKSUMMING;
      else
            card->options.checksum_type = SW_CHECKSUMMING;
      return 0;
}

static u32
qeth_ethtool_get_sg(struct net_device *dev)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
            (dev->features & NETIF_F_SG));
}

static int
qeth_ethtool_set_sg(struct net_device *dev, u32 data)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      if (data) {
            if (card->options.large_send != QETH_LARGE_SEND_NO)
                  dev->features |= NETIF_F_SG;
            else {
                  dev->features &= ~NETIF_F_SG;
                  return -EINVAL;
            }
      } else
            dev->features &= ~NETIF_F_SG;
      return 0;
}

static u32
qeth_ethtool_get_tso(struct net_device *dev)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
            (dev->features & NETIF_F_TSO));
}

static int
qeth_ethtool_set_tso(struct net_device *dev, u32 data)
{
      struct qeth_card *card = (struct qeth_card *)dev->priv;

      if (data) {
            if (card->options.large_send != QETH_LARGE_SEND_NO)
                  dev->features |= NETIF_F_TSO;
            else {
                  dev->features &= ~NETIF_F_TSO;
                  return -EINVAL;
            }
      } else
            dev->features &= ~NETIF_F_TSO;
      return 0;
}

static struct ethtool_ops qeth_ethtool_ops = {
      .get_tx_csum = qeth_ethtool_get_tx_csum,
      .set_tx_csum = qeth_ethtool_set_tx_csum,
      .get_rx_csum = qeth_ethtool_get_rx_csum,
      .set_rx_csum = qeth_ethtool_set_rx_csum,
      .get_sg      = qeth_ethtool_get_sg,
      .set_sg      = qeth_ethtool_set_sg,
      .get_tso     = qeth_ethtool_get_tso,
      .set_tso     = qeth_ethtool_set_tso,
};

static int
qeth_hard_header_parse(const struct sk_buff *skb, unsigned char *haddr)
{
      const struct qeth_card *card;
      const struct ethhdr *eth;
      struct net_device *dev = skb->dev;

      if (dev->type != ARPHRD_IEEE802_TR)
            return 0;

      card = qeth_get_card_from_dev(dev);
      if (card->options.layer2)
            goto haveheader;
#ifdef CONFIG_QETH_IPV6
      /* cause of the manipulated arp constructor and the ARP
         flag for OSAE devices we have some nasty exceptions */
      if (card->info.type == QETH_CARD_TYPE_OSAE) {
            if (!card->options.fake_ll) {
                  if ((skb->pkt_type==PACKET_OUTGOING) &&
                      (skb->protocol==ETH_P_IPV6))
                        goto haveheader;
                  else
                        return 0;
            } else {
                  if ((skb->pkt_type==PACKET_OUTGOING) &&
                      (skb->protocol==ETH_P_IP))
                        return 0;
                  else
                        goto haveheader;
            }
      }
#endif
      if (!card->options.fake_ll)
            return 0;
haveheader:
      eth = eth_hdr(skb);
      memcpy(haddr, eth->h_source, ETH_ALEN);
      return ETH_ALEN;
}

static const struct header_ops qeth_null_ops = {
      .parse = qeth_hard_header_parse,
};

static int
qeth_netdev_init(struct net_device *dev)
{
      struct qeth_card *card;

      card = (struct qeth_card *) dev->priv;

      QETH_DBF_TEXT(trace,3,"initdev");

      dev->tx_timeout = &qeth_tx_timeout;
      dev->watchdog_timeo = QETH_TX_TIMEOUT;
      dev->open = qeth_open;
      dev->stop = qeth_stop;
      dev->hard_start_xmit = qeth_hard_start_xmit;
      dev->do_ioctl = qeth_do_ioctl;
      dev->get_stats = qeth_get_stats;
      dev->change_mtu = qeth_change_mtu;
      dev->neigh_setup = qeth_neigh_setup;
      dev->set_multicast_list = qeth_set_multicast_list;
#ifdef CONFIG_QETH_VLAN
      dev->vlan_rx_register = qeth_vlan_rx_register;
      dev->vlan_rx_kill_vid = qeth_vlan_rx_kill_vid;
      dev->vlan_rx_add_vid = qeth_vlan_rx_add_vid;
#endif
      if (qeth_get_netdev_flags(card) & IFF_NOARP)
            dev->header_ops = &qeth_null_ops;

#ifdef CONFIG_QETH_IPV6
      /*IPv6 address autoconfiguration stuff*/
      if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
            card->dev->dev_id = card->info.unique_id & 0xffff;
#endif
      if (card->options.fake_ll &&
            (qeth_get_netdev_flags(card) & IFF_NOARP))
                  dev->header_ops = &qeth_fake_ops;

      dev->set_mac_address = qeth_layer2_set_mac_address;
      dev->flags |= qeth_get_netdev_flags(card);
      if ((card->options.fake_broadcast) ||
          (card->info.broadcast_capable))
            dev->flags |= IFF_BROADCAST;
      dev->hard_header_len =
                  qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
      dev->addr_len = OSA_ADDR_LEN;
      dev->mtu = card->info.initial_mtu;
      if (card->info.type != QETH_CARD_TYPE_OSN)
            SET_ETHTOOL_OPS(dev, &qeth_ethtool_ops);
      return 0;
}

static void
qeth_init_func_level(struct qeth_card *card)
{
      if (card->ipato.enabled) {
            if (card->info.type == QETH_CARD_TYPE_IQD)
                        card->info.func_level =
                              QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
            else
                        card->info.func_level =
                              QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
      } else {
            if (card->info.type == QETH_CARD_TYPE_IQD)
            /*FIXME:why do we have same values for  dis and ena for osae??? */
                  card->info.func_level =
                        QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
            else
                  card->info.func_level =
                        QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
      }
}

/**
 * hardsetup card, initialize MPC and QDIO stuff
 */
static int
qeth_hardsetup_card(struct qeth_card *card)
{
      int retries = 3;
      int rc;

      QETH_DBF_TEXT(setup, 2, "hrdsetup");

      atomic_set(&card->force_alloc_skb, 0);
retry:
      if (retries < 3){
            PRINT_WARN("Retrying to do IDX activates.\n");
            ccw_device_set_offline(CARD_DDEV(card));
            ccw_device_set_offline(CARD_WDEV(card));
            ccw_device_set_offline(CARD_RDEV(card));
            ccw_device_set_online(CARD_RDEV(card));
            ccw_device_set_online(CARD_WDEV(card));
            ccw_device_set_online(CARD_DDEV(card));
      }
      rc = qeth_qdio_clear_card(card,card->info.type!=QETH_CARD_TYPE_IQD);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(setup, 2, "break1");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }
      if ((rc = qeth_get_unitaddr(card))){
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            return rc;
      }
      qeth_init_tokens(card);
      qeth_init_func_level(card);
      rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(setup, 2, "break2");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }
      rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(setup, 2, "break3");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }
      if ((rc = qeth_mpc_initialize(card))){
            QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
            goto out;
      }
      /*network device will be recovered*/
      if (card->dev) {
            card->dev->header_ops = card->orig_header_ops;
            if (card->options.fake_ll &&
                (qeth_get_netdev_flags(card) & IFF_NOARP))
                  card->dev->header_ops = &qeth_fake_ops;
            return 0;
      }
      /* at first set_online allocate netdev */
      card->dev = qeth_get_netdevice(card->info.type,
                               card->info.link_type);
      if (!card->dev){
            qeth_qdio_clear_card(card, card->info.type !=
                             QETH_CARD_TYPE_IQD);
            rc = -ENODEV;
            QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
            goto out;
      }
      card->dev->priv = card;
      card->orig_header_ops = card->dev->header_ops;
      card->dev->type = qeth_get_arphdr_type(card->info.type,
                                     card->info.link_type);
      card->dev->init = qeth_netdev_init;
      return 0;
out:
      PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
      return rc;
}

static int
qeth_default_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply,
                      unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"defadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code == 0){
            cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
            if (cmd->hdr.prot_version == QETH_PROT_IPV4)
                  card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
#ifdef CONFIG_QETH_IPV6
            if (cmd->hdr.prot_version == QETH_PROT_IPV6)
                  card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
      }
      if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
          cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
            card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
            QETH_DBF_TEXT_(trace, 3, "csum:%d", card->info.csum_mask);
      }
      return 0;
}

static int
qeth_default_setadapterparms_cb(struct qeth_card *card,
                        struct qeth_reply *reply,
                        unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"defadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code == 0)
            cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
      return 0;
}



static int
qeth_query_setadapterparms_cb(struct qeth_card *card, struct qeth_reply *reply,
                        unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,3,"quyadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
            card->info.link_type =
                  cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
      card->options.adp.supported_funcs =
            cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
      return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}

static int
qeth_query_setadapterparms(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace,3,"queryadp");
      iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
                           sizeof(struct qeth_ipacmd_setadpparms));
      rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
      return rc;
}

static int
qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
                           struct qeth_reply *reply,
                           unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"chgmaccb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (!card->options.layer2 ||
          !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
            memcpy(card->dev->dev_addr,
                   &cmd->data.setadapterparms.data.change_addr.addr,
                   OSA_ADDR_LEN);
            card->info.mac_bits |= QETH_LAYER2_MAC_READ;
      }
      qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
      return 0;
}

static int
qeth_setadpparms_change_macaddr(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"chgmac");

      iob = qeth_get_adapter_cmd(card,IPA_SETADP_ALTER_MAC_ADDRESS,
                           sizeof(struct qeth_ipacmd_setadpparms));
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
      cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
      memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
             card->dev->dev_addr, OSA_ADDR_LEN);
      rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
                         NULL);
      return rc;
}

static int
qeth_send_setadp_mode(struct qeth_card *card, __u32 command, __u32 mode)
{
      int rc;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"adpmode");

      iob = qeth_get_adapter_cmd(card, command,
                           sizeof(struct qeth_ipacmd_setadpparms));
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.data.mode = mode;
      rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
                         NULL);
      return rc;
}

static int
qeth_setadapter_hstr(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,4,"adphstr");

      if (qeth_adp_supported(card,IPA_SETADP_SET_BROADCAST_MODE)) {
            rc = qeth_send_setadp_mode(card, IPA_SETADP_SET_BROADCAST_MODE,
                                 card->options.broadcast_mode);
            if (rc)
                  PRINT_WARN("couldn't set broadcast mode on "
                           "device %s: x%x\n",
                           CARD_BUS_ID(card), rc);
            rc = qeth_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS,
                                 card->options.macaddr_mode);
            if (rc)
                  PRINT_WARN("couldn't set macaddr mode on "
                           "device %s: x%x\n", CARD_BUS_ID(card), rc);
            return rc;
      }
      if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
            PRINT_WARN("set adapter parameters not available "
                     "to set broadcast mode, using ALLRINGS "
                     "on device %s:\n", CARD_BUS_ID(card));
      if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
            PRINT_WARN("set adapter parameters not available "
                     "to set macaddr mode, using NONCANONICAL "
                     "on device %s:\n", CARD_BUS_ID(card));
      return 0;
}

static int
qeth_setadapter_parms(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(setup, 2, "setadprm");

      if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)){
            PRINT_WARN("set adapter parameters not supported "
                     "on device %s.\n",
                     CARD_BUS_ID(card));
            QETH_DBF_TEXT(setup, 2, " notsupp");
            return 0;
      }
      rc = qeth_query_setadapterparms(card);
      if (rc) {
            PRINT_WARN("couldn't set adapter parameters on device %s: "
                     "x%x\n", CARD_BUS_ID(card), rc);
            return rc;
      }
      if (qeth_adp_supported(card,IPA_SETADP_ALTER_MAC_ADDRESS)) {
            rc = qeth_setadpparms_change_macaddr(card);
            if (rc)
                  PRINT_WARN("couldn't get MAC address on "
                           "device %s: x%x\n",
                           CARD_BUS_ID(card), rc);
      }

      if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
          (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
            rc = qeth_setadapter_hstr(card);

      return rc;
}

static int
qeth_layer2_initialize(struct qeth_card *card)
{
        int rc = 0;


        QETH_DBF_TEXT(setup, 2, "doL2init");
        QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card));

      rc = qeth_query_setadapterparms(card);
      if (rc) {
            PRINT_WARN("could not query adapter parameters on device %s: "
                     "x%x\n", CARD_BUS_ID(card), rc);
      }

      rc = qeth_setadpparms_change_macaddr(card);
      if (rc) {
            PRINT_WARN("couldn't get MAC address on "
                     "device %s: x%x\n",
                     CARD_BUS_ID(card), rc);
            QETH_DBF_TEXT_(setup, 2,"1err%d",rc);
            return rc;
        }
      QETH_DBF_HEX(setup,2, card->dev->dev_addr, OSA_ADDR_LEN);

      rc = qeth_layer2_send_setmac(card, &card->dev->dev_addr[0]);
        if (rc)
            QETH_DBF_TEXT_(setup, 2,"2err%d",rc);
        return 0;
}


static int
qeth_send_startstoplan(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
                   enum qeth_prot_versions prot)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      iob = qeth_get_ipacmd_buffer(card,ipacmd,prot);
      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

      return rc;
}

static int
qeth_send_startlan(struct qeth_card *card, enum qeth_prot_versions prot)
{
      int rc;

      QETH_DBF_TEXT_(setup, 2, "strtlan%i", prot);

      rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, prot);
      return rc;
}

static int
qeth_send_stoplan(struct qeth_card *card)
{
      int rc = 0;

      /*
       * TODO: according to the IPA format document page 14,
       * TCP/IP (we!) never issue a STOPLAN
       * is this right ?!?
       */
      QETH_DBF_TEXT(trace, 2, "stoplan");

      rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, QETH_PROT_IPV4);
      return rc;
}

static int
qeth_query_ipassists_cb(struct qeth_card *card, struct qeth_reply *reply,
                  unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(setup, 2, "qipasscb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
            card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
            card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
            /* Disable IPV6 support hard coded for Hipersockets */
            if(card->info.type == QETH_CARD_TYPE_IQD)
                  card->options.ipa4.supported_funcs &= ~IPA_IPV6;
      } else {
#ifdef CONFIG_QETH_IPV6
            card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
            card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
      }
      QETH_DBF_TEXT(setup, 2, "suppenbl");
      QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_supported);
      QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_enabled);
      return 0;
}

static int
qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT_(setup, 2, "qipassi%i", prot);
      if (card->options.layer2) {
            QETH_DBF_TEXT(setup, 2, "noprmly2");
            return -EPERM;
      }

      iob = qeth_get_ipacmd_buffer(card,IPA_CMD_QIPASSIST,prot);
      rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
      return rc;
}

static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *card, enum qeth_ipa_funcs ipa_func,
                   __u16 cmd_code, __u16 len,
                   enum qeth_prot_versions prot)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"getasscm");
      iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETASSPARMS,prot);

      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setassparms.hdr.assist_no = ipa_func;
      cmd->data.setassparms.hdr.length = 8 + len;
      cmd->data.setassparms.hdr.command_code = cmd_code;
      cmd->data.setassparms.hdr.return_code = 0;
      cmd->data.setassparms.hdr.seq_no = 0;

      return iob;
}

static int
qeth_send_setassparms(struct qeth_card *card, struct qeth_cmd_buffer *iob,
                  __u16 len, long data,
                  int (*reply_cb)
                  (struct qeth_card *,struct qeth_reply *,unsigned long),
                  void *reply_param)
{
      int rc;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,4,"sendassp");

      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      if (len <= sizeof(__u32))
            cmd->data.setassparms.data.flags_32bit = (__u32) data;
      else   /* (len > sizeof(__u32)) */
            memcpy(&cmd->data.setassparms.data, (void *) data, len);

      rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
      return rc;
}

#ifdef CONFIG_QETH_IPV6
static int
qeth_send_simple_setassparms_ipv6(struct qeth_card *card,
                          enum qeth_ipa_funcs ipa_func, __u16 cmd_code)

{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace,4,"simassp6");
      iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
                               0, QETH_PROT_IPV6);
      rc = qeth_send_setassparms(card, iob, 0, 0,
                           qeth_default_setassparms_cb, NULL);
      return rc;
}
#endif

static int
qeth_send_simple_setassparms(struct qeth_card *card,
                       enum qeth_ipa_funcs ipa_func,
                       __u16 cmd_code, long data)
{
      int rc;
      int length = 0;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace,4,"simassp4");
      if (data)
            length = sizeof(__u32);
      iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
                               length, QETH_PROT_IPV4);
      rc = qeth_send_setassparms(card, iob, length, data,
                           qeth_default_setassparms_cb, NULL);
      return rc;
}

static int
qeth_start_ipa_arp_processing(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"ipaarp");

      if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
            PRINT_WARN("ARP processing not supported "
                     "on %s!\n", QETH_CARD_IFNAME(card));
            return 0;
      }
      rc = qeth_send_simple_setassparms(card,IPA_ARP_PROCESSING,
                                IPA_CMD_ASS_START, 0);
      if (rc) {
            PRINT_WARN("Could not start ARP processing "
                     "assist on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
      }
      return rc;
}

static int
qeth_start_ipa_ip_fragmentation(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"ipaipfrg");

      if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
            PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
                     QETH_CARD_IFNAME(card));
            return  -EOPNOTSUPP;
      }

      rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
                                IPA_CMD_ASS_START, 0);
      if (rc) {
            PRINT_WARN("Could not start Hardware IP fragmentation "
                     "assist on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
      } else
            PRINT_INFO("Hardware IP fragmentation enabled \n");
      return rc;
}

static int
qeth_start_ipa_source_mac(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"stsrcmac");

      if (!card->options.fake_ll)
            return -EOPNOTSUPP;

      if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
            PRINT_INFO("Inbound source address not "
                     "supported on %s\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }

      rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
                                IPA_CMD_ASS_START, 0);
      if (rc)
            PRINT_WARN("Could not start inbound source "
                     "assist on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
      return rc;
}

static int
qeth_start_ipa_vlan(struct qeth_card *card)
{
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"strtvlan");

#ifdef CONFIG_QETH_VLAN
      if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
            PRINT_WARN("VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }

      rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
                                IPA_CMD_ASS_START,0);
      if (rc) {
            PRINT_WARN("Could not start vlan "
                     "assist on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
      } else {
            PRINT_INFO("VLAN enabled \n");
            card->dev->features |=
                  NETIF_F_HW_VLAN_FILTER |
                  NETIF_F_HW_VLAN_TX |
                  NETIF_F_HW_VLAN_RX;
      }
#endif /* QETH_VLAN */
      return rc;
}

static int
qeth_start_ipa_multicast(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"stmcast");

      if (!qeth_is_supported(card, IPA_MULTICASTING)) {
            PRINT_WARN("Multicast not supported on %s\n",
                     QETH_CARD_IFNAME(card));
            return -EOPNOTSUPP;
      }

      rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
                                IPA_CMD_ASS_START,0);
      if (rc) {
            PRINT_WARN("Could not start multicast "
                     "assist on %s: rc=%i\n",
                     QETH_CARD_IFNAME(card), rc);
      } else {
            PRINT_INFO("Multicast enabled\n");
            card->dev->flags |= IFF_MULTICAST;
      }
      return rc;
}

#ifdef CONFIG_QETH_IPV6
static int
qeth_softsetup_ipv6(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"softipv6");

      rc = qeth_send_startlan(card, QETH_PROT_IPV6);
      if (rc) {
            PRINT_ERR("IPv6 startlan failed on %s\n",
                    QETH_CARD_IFNAME(card));
            return rc;
      }
      rc = qeth_query_ipassists(card,QETH_PROT_IPV6);
      if (rc) {
            PRINT_ERR("IPv6 query ipassist failed on %s\n",
                    QETH_CARD_IFNAME(card));
            return rc;
      }
      rc = qeth_send_simple_setassparms(card, IPA_IPV6,
                                IPA_CMD_ASS_START, 3);
      if (rc) {
            PRINT_WARN("IPv6 start assist (version 4) failed "
                     "on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
            return rc;
      }
      rc = qeth_send_simple_setassparms_ipv6(card, IPA_IPV6,
                                     IPA_CMD_ASS_START);
      if (rc) {
            PRINT_WARN("IPV6 start assist (version 6) failed  "
                     "on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
            return rc;
      }
      rc = qeth_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
                                     IPA_CMD_ASS_START);
      if (rc) {
            PRINT_WARN("Could not enable passthrough "
                     "on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
            return rc;
      }
      PRINT_INFO("IPV6 enabled \n");
      return 0;
}

#endif

static int
qeth_start_ipa_ipv6(struct qeth_card *card)
{
      int rc = 0;
#ifdef CONFIG_QETH_IPV6
      QETH_DBF_TEXT(trace,3,"strtipv6");

      if (!qeth_is_supported(card, IPA_IPV6)) {
            PRINT_WARN("IPv6 not supported on %s\n",
                     QETH_CARD_IFNAME(card));
            return 0;
      }
      rc = qeth_softsetup_ipv6(card);
#endif
      return rc ;
}

static int
qeth_start_ipa_broadcast(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"stbrdcst");
      card->info.broadcast_capable = 0;
      if (!qeth_is_supported(card, IPA_FILTERING)) {
            PRINT_WARN("Broadcast not supported on %s\n",
                     QETH_CARD_IFNAME(card));
            rc = -EOPNOTSUPP;
            goto out;
      }
      rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
                                IPA_CMD_ASS_START, 0);
      if (rc) {
            PRINT_WARN("Could not enable broadcasting filtering "
                     "on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
            goto out;
      }

      rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
                                IPA_CMD_ASS_CONFIGURE, 1);
      if (rc) {
            PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
                     QETH_CARD_IFNAME(card), rc);
            goto out;
      }
      card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
      PRINT_INFO("Broadcast enabled \n");
      rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
                                IPA_CMD_ASS_ENABLE, 1);
      if (rc) {
            PRINT_WARN("Could not set up broadcast echo filtering on "
                     "%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
            goto out;
      }
      card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
out:
      if (card->info.broadcast_capable)
            card->dev->flags |= IFF_BROADCAST;
      else
            card->dev->flags &= ~IFF_BROADCAST;
      return rc;
}

static int
qeth_send_checksum_command(struct qeth_card *card)
{
      int rc;

      rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
                                IPA_CMD_ASS_START, 0);
      if (rc) {
            PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
                     "0x%x,\ncontinuing using Inbound SW Checksumming\n",
                     QETH_CARD_IFNAME(card), rc);
            return rc;
      }
      rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
                                IPA_CMD_ASS_ENABLE,
                                card->info.csum_mask);
      if (rc) {
            PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
                     "0x%x,\ncontinuing using Inbound SW Checksumming\n",
                     QETH_CARD_IFNAME(card), rc);
            return rc;
      }
      return 0;
}

static int
qeth_start_ipa_checksum(struct qeth_card *card)
{
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"strtcsum");

      if (card->options.checksum_type == NO_CHECKSUMMING) {
            PRINT_WARN("Using no checksumming on %s.\n",
                     QETH_CARD_IFNAME(card));
            return 0;
      }
      if (card->options.checksum_type == SW_CHECKSUMMING) {
            PRINT_WARN("Using SW checksumming on %s.\n",
                     QETH_CARD_IFNAME(card));
            return 0;
      }
      if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
            PRINT_WARN("Inbound HW Checksumming not "
                     "supported on %s,\ncontinuing "
                     "using Inbound SW Checksumming\n",
                     QETH_CARD_IFNAME(card));
            card->options.checksum_type = SW_CHECKSUMMING;
            return 0;
      }
      rc = qeth_send_checksum_command(card);
      if (!rc) {
            PRINT_INFO("HW Checksumming (inbound) enabled \n");
      }
      return rc;
}

static int
qeth_start_ipa_tso(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"sttso");

      if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
            PRINT_WARN("Outbound TSO not supported on %s\n",
                     QETH_CARD_IFNAME(card));
            rc = -EOPNOTSUPP;
      } else {
            rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
                                      IPA_CMD_ASS_START,0);
            if (rc)
                  PRINT_WARN("Could not start outbound TSO "
                           "assist on %s: rc=%i\n",
                           QETH_CARD_IFNAME(card), rc);
            else
                  PRINT_INFO("Outbound TSO enabled\n");
      }
      if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)){
            card->options.large_send = QETH_LARGE_SEND_NO;
            card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
                                    NETIF_F_HW_CSUM);
      }
      return rc;
}

static int
qeth_start_ipassists(struct qeth_card *card)
{
      QETH_DBF_TEXT(trace,3,"strtipas");
      qeth_start_ipa_arp_processing(card);      /* go on*/
      qeth_start_ipa_ip_fragmentation(card);    /* go on*/
      qeth_start_ipa_source_mac(card);    /* go on*/
      qeth_start_ipa_vlan(card);          /* go on*/
      qeth_start_ipa_multicast(card);           /* go on*/
      qeth_start_ipa_ipv6(card);          /* go on*/
      qeth_start_ipa_broadcast(card);           /* go on*/
      qeth_start_ipa_checksum(card);            /* go on*/
      qeth_start_ipa_tso(card);           /* go on*/
      return 0;
}

static int
qeth_send_setrouting(struct qeth_card *card, enum qeth_routing_types type,
                 enum qeth_prot_versions prot)
{
      int rc;
      struct qeth_ipa_cmd *cmd;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(trace,4,"setroutg");
      iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setrtg.type = (type);
      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

      return rc;

}

static void
qeth_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type,
                  enum qeth_prot_versions prot)
{
      if (card->info.type == QETH_CARD_TYPE_IQD) {
            switch (*type) {
            case NO_ROUTER:
            case PRIMARY_CONNECTOR:
            case SECONDARY_CONNECTOR:
            case MULTICAST_ROUTER:
                  return;
            default:
                  goto out_inval;
            }
      } else {
            switch (*type) {
            case NO_ROUTER:
            case PRIMARY_ROUTER:
            case SECONDARY_ROUTER:
                  return;
            case MULTICAST_ROUTER:
                  if (qeth_is_ipafunc_supported(card, prot,
                                          IPA_OSA_MC_ROUTER))
                        return;
            default:
                  goto out_inval;
            }
      }
out_inval:
      PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
               "Router status set to 'no router'.\n",
               ((*type == PRIMARY_ROUTER)? "primary router" :
                (*type == SECONDARY_ROUTER)? "secondary router" :
                (*type == PRIMARY_CONNECTOR)? "primary connector" :
                (*type == SECONDARY_CONNECTOR)? "secondary connector" :
                (*type == MULTICAST_ROUTER)? "multicast router" :
                "unknown"),
               card->dev->name);
      *type = NO_ROUTER;
}

int
qeth_setrouting_v4(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(trace,3,"setrtg4");

      qeth_correct_routing_type(card, &card->options.route4.type,
                          QETH_PROT_IPV4);

      rc = qeth_send_setrouting(card, card->options.route4.type,
                          QETH_PROT_IPV4);
      if (rc) {
            card->options.route4.type = NO_ROUTER;
            PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
                     "Type set to 'no router'.\n",
                     rc, QETH_CARD_IFNAME(card));
      }
      return rc;
}

int
qeth_setrouting_v6(struct qeth_card *card)
{
      int rc = 0;

      QETH_DBF_TEXT(trace,3,"setrtg6");
#ifdef CONFIG_QETH_IPV6

      if (!qeth_is_supported(card, IPA_IPV6))
            return 0;
      qeth_correct_routing_type(card, &card->options.route6.type,
                          QETH_PROT_IPV6);

      rc = qeth_send_setrouting(card, card->options.route6.type,
                          QETH_PROT_IPV6);
      if (rc) {
            card->options.route6.type = NO_ROUTER;
            PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
                     "Type set to 'no router'.\n",
                     rc, QETH_CARD_IFNAME(card));
      }
#endif
      return rc;
}

int
qeth_set_large_send(struct qeth_card *card, enum qeth_large_send_types type)
{
      int rc = 0;

      if (card->dev == NULL) {
            card->options.large_send = type;
            return 0;
      }
      if (card->state == CARD_STATE_UP)
            netif_tx_disable(card->dev);
      card->options.large_send = type;
      switch (card->options.large_send) {
      case QETH_LARGE_SEND_EDDP:
            card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
                              NETIF_F_HW_CSUM;
            break;
      case QETH_LARGE_SEND_TSO:
            if (qeth_is_supported(card, IPA_OUTBOUND_TSO)){
                  card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
                                    NETIF_F_HW_CSUM;
            } else {
                  PRINT_WARN("TSO not supported on %s. "
                           "large_send set to 'no'.\n",
                           card->dev->name);
                  card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
                                    NETIF_F_HW_CSUM);
                  card->options.large_send = QETH_LARGE_SEND_NO;
                  rc = -EOPNOTSUPP;
            }
            break;
      default: /* includes QETH_LARGE_SEND_NO */
            card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
                              NETIF_F_HW_CSUM);
            break;
      }
      if (card->state == CARD_STATE_UP)
            netif_wake_queue(card->dev);
      return rc;
}

/*
 * softsetup card: init IPA stuff
 */
static int
qeth_softsetup_card(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(setup, 2, "softsetp");

      if ((rc = qeth_send_startlan(card, QETH_PROT_IPV4))){
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            if (rc == 0xe080){
                  PRINT_WARN("LAN on card %s if offline! "
                           "Waiting for STARTLAN from card.\n",
                           CARD_BUS_ID(card));
                  card->lan_online = 0;
            }
            return rc;
      } else
            card->lan_online = 1;
      if (card->info.type==QETH_CARD_TYPE_OSN)
            goto out;
      qeth_set_large_send(card, card->options.large_send);
      if (card->options.layer2) {
            card->dev->features |=
                  NETIF_F_HW_VLAN_FILTER |
                  NETIF_F_HW_VLAN_TX |
                  NETIF_F_HW_VLAN_RX;
            card->dev->flags|=IFF_MULTICAST|IFF_BROADCAST;
            card->info.broadcast_capable=1;
            if ((rc = qeth_layer2_initialize(card))) {
                  QETH_DBF_TEXT_(setup, 2, "L2err%d", rc);
                  return rc;
            }
#ifdef CONFIG_QETH_VLAN
            qeth_layer2_process_vlans(card, 0);
#endif
            goto out;
      }
      if ((rc = qeth_setadapter_parms(card)))
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
      if ((rc = qeth_start_ipassists(card)))
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
      if ((rc = qeth_setrouting_v4(card)))
            QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
      if ((rc = qeth_setrouting_v6(card)))
            QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
out:
      netif_tx_disable(card->dev);
      return 0;
}

#ifdef CONFIG_QETH_IPV6
static int
qeth_get_unique_id_cb(struct qeth_card *card, struct qeth_reply *reply,
                  unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code == 0)
            card->info.unique_id = *((__u16 *)
                        &cmd->data.create_destroy_addr.unique_id[6]);
      else {
            card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
                              UNIQUE_ID_NOT_BY_CARD;
            PRINT_WARN("couldn't get a unique id from the card on device "
                     "%s (result=x%x), using default id. ipv6 "
                     "autoconfig on other lpars may lead to duplicate "
                     "ip addresses. please use manually "
                     "configured ones.\n",
                     CARD_BUS_ID(card), cmd->hdr.return_code);
      }
      return 0;
}
#endif

static int
qeth_put_unique_id(struct qeth_card *card)
{

      int rc = 0;
#ifdef CONFIG_QETH_IPV6
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(trace,2,"puniqeid");

      if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
            UNIQUE_ID_NOT_BY_CARD)
            return -1;
      iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
                             QETH_PROT_IPV6);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
                        card->info.unique_id;
      memcpy(&cmd->data.create_destroy_addr.unique_id[0],
             card->dev->dev_addr, OSA_ADDR_LEN);
      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
#else
      card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
                        UNIQUE_ID_NOT_BY_CARD;
#endif
      return rc;
}

/**
 * Clear IP List
 */
static void
qeth_clear_ip_list(struct qeth_card *card, int clean, int recover)
{
      struct qeth_ipaddr *addr, *tmp;
      unsigned long flags;

      QETH_DBF_TEXT(trace,4,"clearip");
      spin_lock_irqsave(&card->ip_lock, flags);
      /* clear todo list */
      list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry){
            list_del(&addr->entry);
            kfree(addr);
      }

      while (!list_empty(&card->ip_list)) {
            addr = list_entry(card->ip_list.next,
                          struct qeth_ipaddr, entry);
            list_del_init(&addr->entry);
            if (clean) {
                  spin_unlock_irqrestore(&card->ip_lock, flags);
                  qeth_deregister_addr_entry(card, addr);
                  spin_lock_irqsave(&card->ip_lock, flags);
            }
            if (!recover || addr->is_multicast) {
                  kfree(addr);
                  continue;
            }
            list_add_tail(&addr->entry, card->ip_tbd_list);
      }
      spin_unlock_irqrestore(&card->ip_lock, flags);
}

static void
qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
                   int clear_start_mask)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_allowed_mask = threads;
      if (clear_start_mask)
            card->thread_start_mask &= threads;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}

static int
qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      rc = (card->thread_running_mask & threads);
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}

static int
qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
      return wait_event_interruptible(card->wait_q,
                  qeth_threads_running(card, threads) == 0);
}

static int
qeth_stop_card(struct qeth_card *card, int recovery_mode)
{
      int rc = 0;

      QETH_DBF_TEXT(setup ,2,"stopcard");
      QETH_DBF_HEX(setup, 2, &card, sizeof(void *));

      qeth_set_allowed_threads(card, 0, 1);
      if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
            return -ERESTARTSYS;
      if (card->read.state == CH_STATE_UP &&
          card->write.state == CH_STATE_UP &&
          (card->state == CARD_STATE_UP)) {
            if (recovery_mode &&
                card->info.type != QETH_CARD_TYPE_OSN) {
                  qeth_stop(card->dev);
            } else {
                  rtnl_lock();
                  dev_close(card->dev);
                  rtnl_unlock();
            }
            if (!card->use_hard_stop) {
                  __u8 *mac = &card->dev->dev_addr[0];
                  rc = qeth_layer2_send_delmac(card, mac);
                  QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc);
                  if ((rc = qeth_send_stoplan(card)))
                        QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            }
            card->state = CARD_STATE_SOFTSETUP;
      }
      if (card->state == CARD_STATE_SOFTSETUP) {
#ifdef CONFIG_QETH_VLAN
            if (card->options.layer2)
                  qeth_layer2_process_vlans(card, 1);
#endif
            qeth_clear_ip_list(card, !card->use_hard_stop, 1);
            qeth_clear_ipacmd_list(card);
            card->state = CARD_STATE_HARDSETUP;
      }
      if (card->state == CARD_STATE_HARDSETUP) {
            if ((!card->use_hard_stop) &&
                (!card->options.layer2))
                  if ((rc = qeth_put_unique_id(card)))
                        QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            qeth_qdio_clear_card(card, 0);
            qeth_clear_qdio_buffers(card);
            qeth_clear_working_pool_list(card);
            card->state = CARD_STATE_DOWN;
      }
      if (card->state == CARD_STATE_DOWN) {
            qeth_clear_cmd_buffers(&card->read);
            qeth_clear_cmd_buffers(&card->write);
      }
      card->use_hard_stop = 0;
      return rc;
}


static int
qeth_get_unique_id(struct qeth_card *card)
{
      int rc = 0;
#ifdef CONFIG_QETH_IPV6
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(setup, 2, "guniqeid");

      if (!qeth_is_supported(card,IPA_IPV6)) {
            card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
                              UNIQUE_ID_NOT_BY_CARD;
            return 0;
      }

      iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
                             QETH_PROT_IPV6);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
                        card->info.unique_id;

      rc = qeth_send_ipa_cmd(card, iob, qeth_get_unique_id_cb, NULL);
#else
      card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
                        UNIQUE_ID_NOT_BY_CARD;
#endif
      return rc;
}
static void
qeth_print_status_with_portname(struct qeth_card *card)
{
      char dbf_text[15];
      int i;

      sprintf(dbf_text, "%s", card->info.portname + 1);
      for (i = 0; i < 8; i++)
            dbf_text[i] =
                  (char) _ebcasc[(__u8) dbf_text[i]];
      dbf_text[8] = 0;
      printk("qeth: Device %s/%s/%s is a%s card%s%s%s\n"
             "with link type %s (portname: %s)\n",
             CARD_RDEV_ID(card),
             CARD_WDEV_ID(card),
             CARD_DDEV_ID(card),
             qeth_get_cardname(card),
             (card->info.mcl_level[0]) ? " (level: " : "",
             (card->info.mcl_level[0]) ? card->info.mcl_level : "",
             (card->info.mcl_level[0]) ? ")" : "",
             qeth_get_cardname_short(card),
             dbf_text);

}

static void
qeth_print_status_no_portname(struct qeth_card *card)
{
      if (card->info.portname[0])
            printk("qeth: Device %s/%s/%s is a%s "
                   "card%s%s%s\nwith link type %s "
                   "(no portname needed by interface).\n",
                   CARD_RDEV_ID(card),
                   CARD_WDEV_ID(card),
                   CARD_DDEV_ID(card),
                   qeth_get_cardname(card),
                   (card->info.mcl_level[0]) ? " (level: " : "",
                   (card->info.mcl_level[0]) ? card->info.mcl_level : "",
                   (card->info.mcl_level[0]) ? ")" : "",
                   qeth_get_cardname_short(card));
      else
            printk("qeth: Device %s/%s/%s is a%s "
                   "card%s%s%s\nwith link type %s.\n",
                   CARD_RDEV_ID(card),
                   CARD_WDEV_ID(card),
                   CARD_DDEV_ID(card),
                   qeth_get_cardname(card),
                   (card->info.mcl_level[0]) ? " (level: " : "",
                   (card->info.mcl_level[0]) ? card->info.mcl_level : "",
                   (card->info.mcl_level[0]) ? ")" : "",
                   qeth_get_cardname_short(card));
}

static void
qeth_print_status_message(struct qeth_card *card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_OSAE:
            /* VM will use a non-zero first character
             * to indicate a HiperSockets like reporting
             * of the level OSA sets the first character to zero
             * */
            if (!card->info.mcl_level[0]) {
                  sprintf(card->info.mcl_level,"%02x%02x",
                        card->info.mcl_level[2],
                        card->info.mcl_level[3]);

                  card->info.mcl_level[QETH_MCL_LENGTH] = 0;
                  break;
            }
            /* fallthrough */
      case QETH_CARD_TYPE_IQD:
            if (card->info.guestlan) {
                  card->info.mcl_level[0] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[0]];
                  card->info.mcl_level[1] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[1]];
                  card->info.mcl_level[2] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[2]];
                  card->info.mcl_level[3] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[3]];
                  card->info.mcl_level[QETH_MCL_LENGTH] = 0;
            }
            break;
      default:
            memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
      }
      if (card->info.portname_required)
            qeth_print_status_with_portname(card);
      else
            qeth_print_status_no_portname(card);
}

static int
qeth_register_netdev(struct qeth_card *card)
{
      QETH_DBF_TEXT(setup, 3, "regnetd");
      if (card->dev->reg_state != NETREG_UNINITIALIZED)
            return 0;
      /* sysfs magic */
      SET_NETDEV_DEV(card->dev, &card->gdev->dev);
      return register_netdev(card->dev);
}

static void
qeth_start_again(struct qeth_card *card, int recovery_mode)
{
      QETH_DBF_TEXT(setup ,2, "startag");

      if (recovery_mode &&
          card->info.type != QETH_CARD_TYPE_OSN) {
            qeth_open(card->dev);
      } else {
            rtnl_lock();
            dev_open(card->dev);
            rtnl_unlock();
      }
      /* this also sets saved unicast addresses */
      qeth_set_multicast_list(card->dev);
}


/* Layer 2 specific stuff */
#define IGNORE_PARAM_EQ(option,value,reset_value,msg) \
        if (card->options.option == value) { \
                PRINT_ERR("%s not supported with layer 2 " \
                          "functionality, ignoring option on read" \
                    "channel device %s .\n",msg,CARD_RDEV_ID(card)); \
                card->options.option = reset_value; \
        }
#define IGNORE_PARAM_NEQ(option,value,reset_value,msg) \
        if (card->options.option != value) { \
                PRINT_ERR("%s not supported with layer 2 " \
                          "functionality, ignoring option on read" \
                    "channel device %s .\n",msg,CARD_RDEV_ID(card)); \
                card->options.option = reset_value; \
        }


static void qeth_make_parameters_consistent(struct qeth_card *card)
{

      if (card->options.layer2 == 0)
            return;
      if (card->info.type == QETH_CARD_TYPE_OSN)
            return;
      if (card->info.type == QETH_CARD_TYPE_IQD) {
                  PRINT_ERR("Device %s does not support layer 2 functionality." \
                          " Ignoring layer2 option.\n",CARD_BUS_ID(card));
                  card->options.layer2 = 0;
            return;
      }
            IGNORE_PARAM_NEQ(route4.type, NO_ROUTER, NO_ROUTER,
                           "Routing options are");
#ifdef CONFIG_QETH_IPV6
            IGNORE_PARAM_NEQ(route6.type, NO_ROUTER, NO_ROUTER,
                           "Routing options are");
#endif
            IGNORE_PARAM_EQ(checksum_type, HW_CHECKSUMMING,
                        QETH_CHECKSUM_DEFAULT,
                          "Checksumming options are");
            IGNORE_PARAM_NEQ(broadcast_mode, QETH_TR_BROADCAST_ALLRINGS,
                         QETH_TR_BROADCAST_ALLRINGS,
                           "Broadcast mode options are");
            IGNORE_PARAM_NEQ(macaddr_mode, QETH_TR_MACADDR_NONCANONICAL,
                         QETH_TR_MACADDR_NONCANONICAL,
                           "Canonical MAC addr options are");
            IGNORE_PARAM_NEQ(fake_broadcast, 0, 0,
                   "Broadcast faking options are");
            IGNORE_PARAM_NEQ(add_hhlen, DEFAULT_ADD_HHLEN,
                             DEFAULT_ADD_HHLEN,"Option add_hhlen is");
        IGNORE_PARAM_NEQ(fake_ll, 0, 0,"Option fake_ll is");
}


static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode)
{
      struct qeth_card *card = gdev->dev.driver_data;
      int rc = 0;
      enum qeth_card_states recover_flag;

      BUG_ON(!card);
      QETH_DBF_TEXT(setup ,2, "setonlin");
      QETH_DBF_HEX(setup, 2, &card, sizeof(void *));

      qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
      if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)){
            PRINT_WARN("set_online of card %s interrupted by user!\n",
                     CARD_BUS_ID(card));
            return -ERESTARTSYS;
      }

      recover_flag = card->state;
      if ((rc = ccw_device_set_online(CARD_RDEV(card))) ||
          (rc = ccw_device_set_online(CARD_WDEV(card))) ||
          (rc = ccw_device_set_online(CARD_DDEV(card)))){
            QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
            return -EIO;
      }

      qeth_make_parameters_consistent(card);

      if ((rc = qeth_hardsetup_card(card))){
            QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
            goto out_remove;
      }
      card->state = CARD_STATE_HARDSETUP;

      if (!(rc = qeth_query_ipassists(card,QETH_PROT_IPV4)))
            rc = qeth_get_unique_id(card);

      if (rc && card->options.layer2 == 0) {
            QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
            goto out_remove;
      }
      qeth_print_status_message(card);
      if ((rc = qeth_register_netdev(card))){
            QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
            goto out_remove;
      }
      if ((rc = qeth_softsetup_card(card))){
            QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
            goto out_remove;
      }

      if ((rc = qeth_init_qdio_queues(card))){
            QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
            goto out_remove;
      }
      card->state = CARD_STATE_SOFTSETUP;
      netif_carrier_on(card->dev);

      qeth_set_allowed_threads(card, 0xffffffff, 0);
      if (recover_flag == CARD_STATE_RECOVER)
            qeth_start_again(card, recovery_mode);
      qeth_notify_processes();
      return 0;
out_remove:
      card->use_hard_stop = 1;
      qeth_stop_card(card, 0);
      ccw_device_set_offline(CARD_DDEV(card));
      ccw_device_set_offline(CARD_WDEV(card));
      ccw_device_set_offline(CARD_RDEV(card));
      if (recover_flag == CARD_STATE_RECOVER)
            card->state = CARD_STATE_RECOVER;
      else
            card->state = CARD_STATE_DOWN;
      return -ENODEV;
}

static int
qeth_set_online(struct ccwgroup_device *gdev)
{
      return __qeth_set_online(gdev, 0);
}

static struct ccw_device_id qeth_ids[] = {
      {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
      {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
      {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
      {},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

struct device *qeth_root_dev = NULL;

struct ccwgroup_driver qeth_ccwgroup_driver = {
      .owner = THIS_MODULE,
      .name = "qeth",
      .driver_id = 0xD8C5E3C8,
      .probe = qeth_probe_device,
      .remove = qeth_remove_device,
      .set_online = qeth_set_online,
      .set_offline = qeth_set_offline,
};

struct ccw_driver qeth_ccw_driver = {
      .name = "qeth",
      .ids = qeth_ids,
      .probe = ccwgroup_probe_ccwdev,
      .remove = ccwgroup_remove_ccwdev,
};


static void
qeth_unregister_dbf_views(void)
{
      if (qeth_dbf_setup)
            debug_unregister(qeth_dbf_setup);
      if (qeth_dbf_qerr)
            debug_unregister(qeth_dbf_qerr);
      if (qeth_dbf_sense)
            debug_unregister(qeth_dbf_sense);
      if (qeth_dbf_misc)
            debug_unregister(qeth_dbf_misc);
      if (qeth_dbf_data)
            debug_unregister(qeth_dbf_data);
      if (qeth_dbf_control)
            debug_unregister(qeth_dbf_control);
      if (qeth_dbf_trace)
            debug_unregister(qeth_dbf_trace);
}
static int
qeth_register_dbf_views(void)
{
      qeth_dbf_setup = debug_register(QETH_DBF_SETUP_NAME,
                              QETH_DBF_SETUP_PAGES,
                              QETH_DBF_SETUP_NR_AREAS,
                              QETH_DBF_SETUP_LEN);
      qeth_dbf_misc = debug_register(QETH_DBF_MISC_NAME,
                               QETH_DBF_MISC_PAGES,
                               QETH_DBF_MISC_NR_AREAS,
                               QETH_DBF_MISC_LEN);
      qeth_dbf_data = debug_register(QETH_DBF_DATA_NAME,
                               QETH_DBF_DATA_PAGES,
                               QETH_DBF_DATA_NR_AREAS,
                               QETH_DBF_DATA_LEN);
      qeth_dbf_control = debug_register(QETH_DBF_CONTROL_NAME,
                                QETH_DBF_CONTROL_PAGES,
                                QETH_DBF_CONTROL_NR_AREAS,
                                QETH_DBF_CONTROL_LEN);
      qeth_dbf_sense = debug_register(QETH_DBF_SENSE_NAME,
                              QETH_DBF_SENSE_PAGES,
                              QETH_DBF_SENSE_NR_AREAS,
                              QETH_DBF_SENSE_LEN);
      qeth_dbf_qerr = debug_register(QETH_DBF_QERR_NAME,
                               QETH_DBF_QERR_PAGES,
                               QETH_DBF_QERR_NR_AREAS,
                               QETH_DBF_QERR_LEN);
      qeth_dbf_trace = debug_register(QETH_DBF_TRACE_NAME,
                              QETH_DBF_TRACE_PAGES,
                              QETH_DBF_TRACE_NR_AREAS,
                              QETH_DBF_TRACE_LEN);

      if ((qeth_dbf_setup == NULL) || (qeth_dbf_misc == NULL)    ||
          (qeth_dbf_data == NULL)  || (qeth_dbf_control == NULL) ||
          (qeth_dbf_sense == NULL) || (qeth_dbf_qerr == NULL)    ||
          (qeth_dbf_trace == NULL)) {
            qeth_unregister_dbf_views();
            return -ENOMEM;
      }
      debug_register_view(qeth_dbf_setup, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_setup, QETH_DBF_SETUP_LEVEL);

      debug_register_view(qeth_dbf_misc, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_misc, QETH_DBF_MISC_LEVEL);

      debug_register_view(qeth_dbf_data, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_data, QETH_DBF_DATA_LEVEL);

      debug_register_view(qeth_dbf_control, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_control, QETH_DBF_CONTROL_LEVEL);

      debug_register_view(qeth_dbf_sense, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_sense, QETH_DBF_SENSE_LEVEL);

      debug_register_view(qeth_dbf_qerr, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_qerr, QETH_DBF_QERR_LEVEL);

      debug_register_view(qeth_dbf_trace, &debug_hex_ascii_view);
      debug_set_level(qeth_dbf_trace, QETH_DBF_TRACE_LEVEL);

      return 0;
}

#ifdef CONFIG_QETH_IPV6
extern struct neigh_table arp_tbl;
static struct neigh_ops *arp_direct_ops;
static int (*qeth_old_arp_constructor) (struct neighbour *);

static struct neigh_ops arp_direct_ops_template = {
      .family = AF_INET,
      .solicit = NULL,
      .error_report = NULL,
      .output = dev_queue_xmit,
      .connected_output = dev_queue_xmit,
      .hh_output = dev_queue_xmit,
      .queue_xmit = dev_queue_xmit
};

static int
qeth_arp_constructor(struct neighbour *neigh)
{
      struct net_device *dev = neigh->dev;
      struct in_device *in_dev;
      struct neigh_parms *parms;
      struct qeth_card *card;

      card = qeth_get_card_from_dev(dev);
      if (card == NULL)
            goto out;
      if((card->options.layer2) ||
         (card->dev->header_ops == &qeth_fake_ops))
            goto out;

      rcu_read_lock();
      in_dev = __in_dev_get_rcu(dev);
      if (in_dev == NULL) {
            rcu_read_unlock();
            return -EINVAL;
      }

      parms = in_dev->arp_parms;
      __neigh_parms_put(neigh->parms);
      neigh->parms = neigh_parms_clone(parms);
      rcu_read_unlock();

      neigh->type = inet_addr_type(*(__be32 *) neigh->primary_key);
      neigh->nud_state = NUD_NOARP;
      neigh->ops = arp_direct_ops;
      neigh->output = neigh->ops->queue_xmit;
      return 0;
out:
      return qeth_old_arp_constructor(neigh);
}
#endif  /*CONFIG_QETH_IPV6*/

/*
 * IP address takeover related functions
 */
static void
qeth_clear_ipato_list(struct qeth_card *card)
{
      struct qeth_ipato_entry *ipatoe, *tmp;
      unsigned long flags;

      spin_lock_irqsave(&card->ip_lock, flags);
      list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
            list_del(&ipatoe->entry);
            kfree(ipatoe);
      }
      spin_unlock_irqrestore(&card->ip_lock, flags);
}

int
qeth_add_ipato_entry(struct qeth_card *card, struct qeth_ipato_entry *new)
{
      struct qeth_ipato_entry *ipatoe;
      unsigned long flags;
      int rc = 0;

      QETH_DBF_TEXT(trace, 2, "addipato");
      spin_lock_irqsave(&card->ip_lock, flags);
      list_for_each_entry(ipatoe, &card->ipato.entries, entry){
            if (ipatoe->proto != new->proto)
                  continue;
            if (!memcmp(ipatoe->addr, new->addr,
                      (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
                (ipatoe->mask_bits == new->mask_bits)){
                  PRINT_WARN("ipato entry already exists!\n");
                  rc = -EEXIST;
                  break;
            }
      }
      if (!rc) {
            list_add_tail(&new->entry, &card->ipato.entries);
      }
      spin_unlock_irqrestore(&card->ip_lock, flags);
      return rc;
}

void
qeth_del_ipato_entry(struct qeth_card *card, enum qeth_prot_versions proto,
                 u8 *addr, int mask_bits)
{
      struct qeth_ipato_entry *ipatoe, *tmp;
      unsigned long flags;

      QETH_DBF_TEXT(trace, 2, "delipato");
      spin_lock_irqsave(&card->ip_lock, flags);
      list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry){
            if (ipatoe->proto != proto)
                  continue;
            if (!memcmp(ipatoe->addr, addr,
                      (proto == QETH_PROT_IPV4)? 4:16) &&
                (ipatoe->mask_bits == mask_bits)){
                  list_del(&ipatoe->entry);
                  kfree(ipatoe);
            }
      }
      spin_unlock_irqrestore(&card->ip_lock, flags);
}

static void
qeth_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
{
      int i, j;
      u8 octet;

      for (i = 0; i < len; ++i){
            octet = addr[i];
            for (j = 7; j >= 0; --j){
                  bits[i*8 + j] = octet & 1;
                  octet >>= 1;
            }
      }
}

static int
qeth_is_addr_covered_by_ipato(struct qeth_card *card, struct qeth_ipaddr *addr)
{
      struct qeth_ipato_entry *ipatoe;
      u8 addr_bits[128] = {0, };
      u8 ipatoe_bits[128] = {0, };
      int rc = 0;

      if (!card->ipato.enabled)
            return 0;

      qeth_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
                          (addr->proto == QETH_PROT_IPV4)? 4:16);
      list_for_each_entry(ipatoe, &card->ipato.entries, entry){
            if (addr->proto != ipatoe->proto)
                  continue;
            qeth_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
                                (ipatoe->proto==QETH_PROT_IPV4) ?
                                4:16);
            if (addr->proto == QETH_PROT_IPV4)
                  rc = !memcmp(addr_bits, ipatoe_bits,
                             min(32, ipatoe->mask_bits));
            else
                  rc = !memcmp(addr_bits, ipatoe_bits,
                             min(128, ipatoe->mask_bits));
            if (rc)
                  break;
      }
      /* invert? */
      if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
            rc = !rc;
      else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
            rc = !rc;

      return rc;
}

/*
 * VIPA related functions
 */
int
qeth_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
            const u8 *addr)
{
      struct qeth_ipaddr *ipaddr;
      unsigned long flags;
      int rc = 0;

      ipaddr = qeth_get_addr_buffer(proto);
      if (ipaddr){
            if (proto == QETH_PROT_IPV4){
                  QETH_DBF_TEXT(trace, 2, "addvipa4");
                  memcpy(&ipaddr->u.a4.addr, addr, 4);
                  ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
            } else if (proto == QETH_PROT_IPV6){
                  QETH_DBF_TEXT(trace, 2, "addvipa6");
                  memcpy(&ipaddr->u.a6.addr, addr, 16);
                  ipaddr->u.a6.pfxlen = 0;
#endif
            }
            ipaddr->type = QETH_IP_TYPE_VIPA;
            ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
            ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
      } else
            return -ENOMEM;
      spin_lock_irqsave(&card->ip_lock, flags);
      if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
          __qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
            rc = -EEXIST;
      spin_unlock_irqrestore(&card->ip_lock, flags);
      if (rc){
            PRINT_WARN("Cannot add VIPA. Address already exists!\n");
            return rc;
      }
      if (!qeth_add_ip(card, ipaddr))
            kfree(ipaddr);
      qeth_set_ip_addr_list(card);
      return rc;
}

void
qeth_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
            const u8 *addr)
{
      struct qeth_ipaddr *ipaddr;

      ipaddr = qeth_get_addr_buffer(proto);
      if (ipaddr){
            if (proto == QETH_PROT_IPV4){
                  QETH_DBF_TEXT(trace, 2, "delvipa4");
                  memcpy(&ipaddr->u.a4.addr, addr, 4);
                  ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
            } else if (proto == QETH_PROT_IPV6){
                  QETH_DBF_TEXT(trace, 2, "delvipa6");
                  memcpy(&ipaddr->u.a6.addr, addr, 16);
                  ipaddr->u.a6.pfxlen = 0;
#endif
            }
            ipaddr->type = QETH_IP_TYPE_VIPA;
      } else
            return;
      if (!qeth_delete_ip(card, ipaddr))
            kfree(ipaddr);
      qeth_set_ip_addr_list(card);
}

/*
 * proxy ARP related functions
 */
int
qeth_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
            const u8 *addr)
{
      struct qeth_ipaddr *ipaddr;
      unsigned long flags;
      int rc = 0;

      ipaddr = qeth_get_addr_buffer(proto);
      if (ipaddr){
            if (proto == QETH_PROT_IPV4){
                  QETH_DBF_TEXT(trace, 2, "addrxip4");
                  memcpy(&ipaddr->u.a4.addr, addr, 4);
                  ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
            } else if (proto == QETH_PROT_IPV6){
                  QETH_DBF_TEXT(trace, 2, "addrxip6");
                  memcpy(&ipaddr->u.a6.addr, addr, 16);
                  ipaddr->u.a6.pfxlen = 0;
#endif
            }
            ipaddr->type = QETH_IP_TYPE_RXIP;
            ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
            ipaddr->del_flags = 0;
      } else
            return -ENOMEM;
      spin_lock_irqsave(&card->ip_lock, flags);
      if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
          __qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
            rc = -EEXIST;
      spin_unlock_irqrestore(&card->ip_lock, flags);
      if (rc){
            PRINT_WARN("Cannot add RXIP. Address already exists!\n");
            return rc;
      }
      if (!qeth_add_ip(card, ipaddr))
            kfree(ipaddr);
      qeth_set_ip_addr_list(card);
      return 0;
}

void
qeth_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
            const u8 *addr)
{
      struct qeth_ipaddr *ipaddr;

      ipaddr = qeth_get_addr_buffer(proto);
      if (ipaddr){
            if (proto == QETH_PROT_IPV4){
                  QETH_DBF_TEXT(trace, 2, "addrxip4");
                  memcpy(&ipaddr->u.a4.addr, addr, 4);
                  ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
            } else if (proto == QETH_PROT_IPV6){
                  QETH_DBF_TEXT(trace, 2, "addrxip6");
                  memcpy(&ipaddr->u.a6.addr, addr, 16);
                  ipaddr->u.a6.pfxlen = 0;
#endif
            }
            ipaddr->type = QETH_IP_TYPE_RXIP;
      } else
            return;
      if (!qeth_delete_ip(card, ipaddr))
            kfree(ipaddr);
      qeth_set_ip_addr_list(card);
}

/**
 * IP event handler
 */
static int
qeth_ip_event(struct notifier_block *this,
            unsigned long event,void *ptr)
{
      struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
      struct net_device *dev =(struct net_device *) ifa->ifa_dev->dev;
      struct qeth_ipaddr *addr;
      struct qeth_card *card;

      QETH_DBF_TEXT(trace,3,"ipevent");
      card = qeth_get_card_from_dev(dev);
      if (!card)
            return NOTIFY_DONE;
      if (card->options.layer2)
            return NOTIFY_DONE;

      addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
      if (addr != NULL) {
            addr->u.a4.addr = ifa->ifa_address;
            addr->u.a4.mask = ifa->ifa_mask;
            addr->type = QETH_IP_TYPE_NORMAL;
      } else
            goto out;

      switch(event) {
      case NETDEV_UP:
            if (!qeth_add_ip(card, addr))
                  kfree(addr);
            break;
      case NETDEV_DOWN:
            if (!qeth_delete_ip(card, addr))
                  kfree(addr);
            break;
      default:
            break;
      }
      qeth_set_ip_addr_list(card);
out:
      return NOTIFY_DONE;
}

static struct notifier_block qeth_ip_notifier = {
      qeth_ip_event,
      NULL,
};

#ifdef CONFIG_QETH_IPV6
/**
 * IPv6 event handler
 */
static int
qeth_ip6_event(struct notifier_block *this,
            unsigned long event,void *ptr)
{

      struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
      struct net_device *dev = (struct net_device *)ifa->idev->dev;
      struct qeth_ipaddr *addr;
      struct qeth_card *card;

      QETH_DBF_TEXT(trace,3,"ip6event");

      card = qeth_get_card_from_dev(dev);
      if (!card)
            return NOTIFY_DONE;
      if (!qeth_is_supported(card, IPA_IPV6))
            return NOTIFY_DONE;

      addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
      if (addr != NULL) {
            memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
            addr->u.a6.pfxlen = ifa->prefix_len;
            addr->type = QETH_IP_TYPE_NORMAL;
      } else
            goto out;

      switch(event) {
      case NETDEV_UP:
            if (!qeth_add_ip(card, addr))
                  kfree(addr);
            break;
      case NETDEV_DOWN:
            if (!qeth_delete_ip(card, addr))
                  kfree(addr);
            break;
      default:
            break;
      }
      qeth_set_ip_addr_list(card);
out:
      return NOTIFY_DONE;
}

static struct notifier_block qeth_ip6_notifier = {
      qeth_ip6_event,
      NULL,
};
#endif

static int
__qeth_reboot_event_card(struct device *dev, void *data)
{
      struct qeth_card *card;

      card = (struct qeth_card *) dev->driver_data;
      qeth_clear_ip_list(card, 0, 0);
      qeth_qdio_clear_card(card, 0);
      qeth_clear_qdio_buffers(card);
      return 0;
}

static int
qeth_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
{
      int ret;

      ret = driver_for_each_device(&qeth_ccwgroup_driver.driver, NULL, NULL,
                             __qeth_reboot_event_card);
      return ret ? NOTIFY_BAD : NOTIFY_DONE;
}


static struct notifier_block qeth_reboot_notifier = {
      qeth_reboot_event,
      NULL,
};

static int
qeth_register_notifiers(void)
{
        int r;

      QETH_DBF_TEXT(trace,5,"regnotif");
      if ((r = register_reboot_notifier(&qeth_reboot_notifier)))
            return r;
      if ((r = register_inetaddr_notifier(&qeth_ip_notifier)))
            goto out_reboot;
#ifdef CONFIG_QETH_IPV6
      if ((r = register_inet6addr_notifier(&qeth_ip6_notifier)))
            goto out_ipv4;
#endif
      return 0;

#ifdef CONFIG_QETH_IPV6
out_ipv4:
      unregister_inetaddr_notifier(&qeth_ip_notifier);
#endif
out_reboot:
      unregister_reboot_notifier(&qeth_reboot_notifier);
      return r;
}

/**
 * unregister all event notifiers
 */
static void
qeth_unregister_notifiers(void)
{

      QETH_DBF_TEXT(trace,5,"unregnot");
      BUG_ON(unregister_reboot_notifier(&qeth_reboot_notifier));
      BUG_ON(unregister_inetaddr_notifier(&qeth_ip_notifier));
#ifdef CONFIG_QETH_IPV6
      BUG_ON(unregister_inet6addr_notifier(&qeth_ip6_notifier));
#endif /* QETH_IPV6 */

}

#ifdef CONFIG_QETH_IPV6
static int
qeth_ipv6_init(void)
{
      qeth_old_arp_constructor = arp_tbl.constructor;
      write_lock_bh(&arp_tbl.lock);
      arp_tbl.constructor = qeth_arp_constructor;
      write_unlock_bh(&arp_tbl.lock);

      arp_direct_ops = (struct neigh_ops*)
            kmalloc(sizeof(struct neigh_ops), GFP_KERNEL);
      if (!arp_direct_ops)
            return -ENOMEM;

      memcpy(arp_direct_ops, &arp_direct_ops_template,
             sizeof(struct neigh_ops));

      return 0;
}

static void
qeth_ipv6_uninit(void)
{
      write_lock_bh(&arp_tbl.lock);
      arp_tbl.constructor = qeth_old_arp_constructor;
      write_unlock_bh(&arp_tbl.lock);
      kfree(arp_direct_ops);
}
#endif /* CONFIG_QETH_IPV6 */

static void
qeth_sysfs_unregister(void)
{
      s390_root_dev_unregister(qeth_root_dev);
      qeth_remove_driver_attributes();
      ccw_driver_unregister(&qeth_ccw_driver);
      ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
}

/**
 * register qeth at sysfs
 */
static int
qeth_sysfs_register(void)
{
      int rc;

      rc = ccwgroup_driver_register(&qeth_ccwgroup_driver);
      if (rc)
            goto out;

      rc = ccw_driver_register(&qeth_ccw_driver);
      if (rc)
            goto out_ccw_driver;

      rc = qeth_create_driver_attributes();
      if (rc)
            goto out_qeth_attr;

      qeth_root_dev = s390_root_dev_register("qeth");
      rc = IS_ERR(qeth_root_dev) ? PTR_ERR(qeth_root_dev) : 0;
      if (!rc)
            goto out;

      qeth_remove_driver_attributes();
out_qeth_attr:
      ccw_driver_unregister(&qeth_ccw_driver);
out_ccw_driver:
      ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
out:
      return rc;
}

/***
 * init function
 */
static int __init
qeth_init(void)
{
      int rc;

      PRINT_INFO("loading %s\n", version);

      INIT_LIST_HEAD(&qeth_card_list.list);
      INIT_LIST_HEAD(&qeth_notify_list);
      spin_lock_init(&qeth_notify_lock);
      rwlock_init(&qeth_card_list.rwlock);

      rc = qeth_register_dbf_views();
      if (rc)
            goto out_err;

      rc = qeth_sysfs_register();
      if (rc)
            goto out_dbf;

#ifdef CONFIG_QETH_IPV6
      rc = qeth_ipv6_init();
      if (rc) {
            PRINT_ERR("Out of memory during ipv6 init code = %d\n", rc);
            goto out_sysfs;
      }
#endif /* QETH_IPV6 */
      rc = qeth_register_notifiers();
      if (rc)
            goto out_ipv6;
      rc = qeth_create_procfs_entries();
      if (rc)
            goto out_notifiers;

      return rc;

out_notifiers:
      qeth_unregister_notifiers();
out_ipv6:
#ifdef CONFIG_QETH_IPV6
      qeth_ipv6_uninit();
out_sysfs:
#endif /* QETH_IPV6 */
      qeth_sysfs_unregister();
out_dbf:
      qeth_unregister_dbf_views();
out_err:
      PRINT_ERR("Initialization failed with code %d\n", rc);
      return rc;
}

static void
__exit qeth_exit(void)
{
      struct qeth_card *card, *tmp;
      unsigned long flags;

      QETH_DBF_TEXT(trace,1, "cleanup.");

      /*
       * Weed would not need to clean up our devices here, because the
       * common device layer calls qeth_remove_device for each device
       * as soon as we unregister our driver (done in qeth_sysfs_unregister).
       * But we do cleanup here so we can do a "soft" shutdown of our cards.
       * qeth_remove_device called by the common device layer would otherwise
       * do a "hard" shutdown (card->use_hard_stop is set to one in
       * qeth_remove_device).
       */
again:
      read_lock_irqsave(&qeth_card_list.rwlock, flags);
      list_for_each_entry_safe(card, tmp, &qeth_card_list.list, list){
            read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
            qeth_set_offline(card->gdev);
            qeth_remove_device(card->gdev);
            goto again;
      }
      read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
#ifdef CONFIG_QETH_IPV6
      qeth_ipv6_uninit();
#endif
      qeth_unregister_notifiers();
      qeth_remove_procfs_entries();
      qeth_sysfs_unregister();
      qeth_unregister_dbf_views();
      printk("qeth: removed\n");
}

EXPORT_SYMBOL(qeth_osn_register);
EXPORT_SYMBOL(qeth_osn_deregister);
EXPORT_SYMBOL(qeth_osn_assist);
module_init(qeth_init);
module_exit(qeth_exit);
MODULE_AUTHOR("Frank Pavlic <fpavlic@de.ibm.com>");
MODULE_DESCRIPTION("Linux on zSeries OSA Express and HiperSockets support\n" \
                                  "Copyright 2000,2003 IBM Corporation\n");

MODULE_LICENSE("GPL");

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