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qeth.h

#ifndef __QETH_H__
#define __QETH_H__

#include <linux/if.h>
#include <linux/if_arp.h>

#include <linux/if_tr.h>
#include <linux/trdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
#include <linux/ctype.h>

#include <net/ipv6.h>
#include <linux/in6.h>
#include <net/if_inet6.h>
#include <net/addrconf.h>


#include <linux/bitops.h>

#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>

#include "qeth_mpc.h"

#ifdef CONFIG_QETH_IPV6
#define QETH_VERSION_IPV6     ":IPv6"
#else
#define QETH_VERSION_IPV6     ""
#endif
#ifdef CONFIG_QETH_VLAN
#define QETH_VERSION_VLAN     ":VLAN"
#else
#define QETH_VERSION_VLAN     ""
#endif

/**
 * Debug Facility stuff
 */
#define QETH_DBF_SETUP_NAME "qeth_setup"
#define QETH_DBF_SETUP_LEN 8
#define QETH_DBF_SETUP_PAGES 8
#define QETH_DBF_SETUP_NR_AREAS 1
#define QETH_DBF_SETUP_LEVEL 5

#define QETH_DBF_MISC_NAME "qeth_misc"
#define QETH_DBF_MISC_LEN 128
#define QETH_DBF_MISC_PAGES 2
#define QETH_DBF_MISC_NR_AREAS 1
#define QETH_DBF_MISC_LEVEL 2

#define QETH_DBF_DATA_NAME "qeth_data"
#define QETH_DBF_DATA_LEN 96
#define QETH_DBF_DATA_PAGES 8
#define QETH_DBF_DATA_NR_AREAS 1
#define QETH_DBF_DATA_LEVEL 2

#define QETH_DBF_CONTROL_NAME "qeth_control"
#define QETH_DBF_CONTROL_LEN 256
#define QETH_DBF_CONTROL_PAGES 8
#define QETH_DBF_CONTROL_NR_AREAS 2
#define QETH_DBF_CONTROL_LEVEL 5

#define QETH_DBF_TRACE_NAME "qeth_trace"
#define QETH_DBF_TRACE_LEN 8
#define QETH_DBF_TRACE_PAGES 4
#define QETH_DBF_TRACE_NR_AREAS 2
#define QETH_DBF_TRACE_LEVEL 3
extern debug_info_t *qeth_dbf_trace;

#define QETH_DBF_SENSE_NAME "qeth_sense"
#define QETH_DBF_SENSE_LEN 64
#define QETH_DBF_SENSE_PAGES 2
#define QETH_DBF_SENSE_NR_AREAS 1
#define QETH_DBF_SENSE_LEVEL 2

#define QETH_DBF_QERR_NAME "qeth_qerr"
#define QETH_DBF_QERR_LEN 8
#define QETH_DBF_QERR_PAGES 2
#define QETH_DBF_QERR_NR_AREAS 2
#define QETH_DBF_QERR_LEVEL 2

#define QETH_DBF_TEXT(name,level,text) \
      do { \
            debug_text_event(qeth_dbf_##name,level,text); \
      } while (0)

#define QETH_DBF_HEX(name,level,addr,len) \
      do { \
            debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
      } while (0)

DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);

#define QETH_DBF_TEXT_(name,level,text...)                        \
      do {                                            \
            char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf);    \
            sprintf(dbf_txt_buf, text);                     \
            debug_text_event(qeth_dbf_##name,level,dbf_txt_buf);  \
            put_cpu_var(qeth_dbf_txt_buf);                        \
      } while (0)

#define QETH_DBF_SPRINTF(name,level,text...) \
      do { \
            debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
            debug_sprintf_event(qeth_dbf_trace, level, text ); \
      } while (0)

/**
 * some more debug stuff
 */
#define PRINTK_HEADER   "qeth: "

#define HEXDUMP16(importance,header,ptr) \
PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
               "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
               *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
               *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
               *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
               *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
               *(((char*)ptr)+12),*(((char*)ptr)+13), \
               *(((char*)ptr)+14),*(((char*)ptr)+15)); \
PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
               "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
               *(((char*)ptr)+16),*(((char*)ptr)+17), \
               *(((char*)ptr)+18),*(((char*)ptr)+19), \
               *(((char*)ptr)+20),*(((char*)ptr)+21), \
               *(((char*)ptr)+22),*(((char*)ptr)+23), \
               *(((char*)ptr)+24),*(((char*)ptr)+25), \
               *(((char*)ptr)+26),*(((char*)ptr)+27), \
               *(((char*)ptr)+28),*(((char*)ptr)+29), \
               *(((char*)ptr)+30),*(((char*)ptr)+31));

static inline void
qeth_hex_dump(unsigned char *buf, size_t len)
{
      size_t i;

      for (i = 0; i < len; i++) {
            if (i && !(i % 16))
                  printk("\n");
            printk("%02x ", *(buf + i));
      }
      printk("\n");
}

#define SENSE_COMMAND_REJECT_BYTE 0
#define SENSE_COMMAND_REJECT_FLAG 0x80
#define SENSE_RESETTING_EVENT_BYTE 1
#define SENSE_RESETTING_EVENT_FLAG 0x80

/*
 * Common IO related definitions
 */
extern struct device *qeth_root_dev;
extern struct ccw_driver qeth_ccw_driver;
extern struct ccwgroup_driver qeth_ccwgroup_driver;

#define CARD_RDEV(card) card->read.ccwdev
#define CARD_WDEV(card) card->write.ccwdev
#define CARD_DDEV(card) card->data.ccwdev
#define CARD_BUS_ID(card) card->gdev->dev.bus_id
#define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
#define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
#define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
#define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id

#define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
            ((struct ccwgroup_device *)cdev->dev.driver_data)\
            ->dev.driver_data;

/**
 * card stuff
 */
00177 struct qeth_perf_stats {
      unsigned int bufs_rec;
      unsigned int bufs_sent;

      unsigned int skbs_sent_pack;
      unsigned int bufs_sent_pack;

      unsigned int sc_dp_p;
      unsigned int sc_p_dp;
      /* qdio_input_handler: number of times called, time spent in */
      __u64 inbound_start_time;
      unsigned int inbound_cnt;
      unsigned int inbound_time;
      /* qeth_send_packet: number of times called, time spent in */
      __u64 outbound_start_time;
      unsigned int outbound_cnt;
      unsigned int outbound_time;
      /* qdio_output_handler: number of times called, time spent in */
      __u64 outbound_handler_start_time;
      unsigned int outbound_handler_cnt;
      unsigned int outbound_handler_time;
      /* number of calls to and time spent in do_QDIO for inbound queue */
      __u64 inbound_do_qdio_start_time;
      unsigned int inbound_do_qdio_cnt;
      unsigned int inbound_do_qdio_time;
      /* number of calls to and time spent in do_QDIO for outbound queues */
      __u64 outbound_do_qdio_start_time;
      unsigned int outbound_do_qdio_cnt;
      unsigned int outbound_do_qdio_time;
      /* eddp data */
      unsigned int large_send_bytes;
      unsigned int large_send_cnt;
      unsigned int sg_skbs_sent;
      unsigned int sg_frags_sent;
      /* initial values when measuring starts */
      unsigned long initial_rx_packets;
      unsigned long initial_tx_packets;
      /* inbound scatter gather data */
      unsigned int sg_skbs_rx;
      unsigned int sg_frags_rx;
      unsigned int sg_alloc_page_rx;
};

/* Routing stuff */
struct qeth_routing_info {
      enum qeth_routing_types type;
};

/* IPA stuff */
struct qeth_ipa_info {
      __u32 supported_funcs;
      __u32 enabled_funcs;
};

static inline int
qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
{
      return (ipa->supported_funcs & func);
}

static inline int
qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
{
      return (ipa->supported_funcs & ipa->enabled_funcs & func);
}

#define qeth_adp_supported(c,f) \
      qeth_is_ipa_supported(&c->options.adp, f)
#define qeth_adp_enabled(c,f) \
      qeth_is_ipa_enabled(&c->options.adp, f)
#define qeth_is_supported(c,f) \
      qeth_is_ipa_supported(&c->options.ipa4, f)
#define qeth_is_enabled(c,f) \
      qeth_is_ipa_enabled(&c->options.ipa4, f)
#ifdef CONFIG_QETH_IPV6
#define qeth_is_supported6(c,f) \
      qeth_is_ipa_supported(&c->options.ipa6, f)
#define qeth_is_enabled6(c,f) \
      qeth_is_ipa_enabled(&c->options.ipa6, f)
#else /* CONFIG_QETH_IPV6 */
#define qeth_is_supported6(c,f) 0
#define qeth_is_enabled6(c,f) 0
#endif /* CONFIG_QETH_IPV6 */
#define qeth_is_ipafunc_supported(c,prot,f) \
       (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
#define qeth_is_ipafunc_enabled(c,prot,f) \
       (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)


#define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
#define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
#define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
#define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108

#define QETH_MODELLIST_ARRAY \
      {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
      QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
      QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
      QETH_MAX_QUEUES,0}, \
      {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
      QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
      QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
      QETH_MAX_QUEUES,0x103}, \
      {0x1731,0x06,0x1732,0x06,QETH_CARD_TYPE_OSN,0, \
      QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
      QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
      QETH_MAX_QUEUES,0}, \
      {0,0,0,0,0,0,0,0,0}}

#define QETH_REAL_CARD        1
#define QETH_VLAN_CARD        2
#define QETH_BUFSIZE          4096

/**
 * some more defs
 */
#define IF_NAME_LEN           16
#define QETH_TX_TIMEOUT       100 * HZ
#define QETH_RCD_TIMEOUT      60 * HZ
#define QETH_HEADER_SIZE      32
#define MAX_PORTNO            15
#define QETH_FAKE_LL_LEN_ETH  ETH_HLEN
#define QETH_FAKE_LL_LEN_TR   (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
#define QETH_FAKE_LL_V6_ADDR_POS 24

/*IPv6 address autoconfiguration stuff*/
#define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
#define UNIQUE_ID_NOT_BY_CARD             0x10000

/*****************************************************************************/
/* QDIO queue and buffer handling                                            */
/*****************************************************************************/
#define QETH_MAX_QUEUES 4
#define QETH_IN_BUF_SIZE_DEFAULT 65536
#define QETH_IN_BUF_COUNT_DEFAULT 16
#define QETH_IN_BUF_COUNT_MIN 8
#define QETH_IN_BUF_COUNT_MAX 128
#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
            ((card)->qdio.in_buf_pool.buf_count / 2)

/* buffers we have to be behind before we get a PCI */
#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
/*enqueued free buffers left before we get a PCI*/
#define QETH_PCI_THRESHOLD_B(card) 0
/*not used unless the microcode gets patched*/
#define QETH_PCI_TIMER_VALUE(card) 3

#define QETH_MIN_INPUT_THRESHOLD 1
#define QETH_MAX_INPUT_THRESHOLD 500
#define QETH_MIN_OUTPUT_THRESHOLD 1
#define QETH_MAX_OUTPUT_THRESHOLD 300

/* priority queing */
#define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
#define QETH_DEFAULT_QUEUE    2
#define QETH_NO_PRIO_QUEUEING 0
#define QETH_PRIO_Q_ING_PREC  1
#define QETH_PRIO_Q_ING_TOS   2
#define IP_TOS_LOWDELAY 0x10
#define IP_TOS_HIGHTHROUGHPUT 0x08
#define IP_TOS_HIGHRELIABILITY 0x04
#define IP_TOS_NOTIMPORTANT 0x02

/* Packing */
#define QETH_LOW_WATERMARK_PACK  2
#define QETH_HIGH_WATERMARK_PACK 5
#define QETH_WATERMARK_PACK_FUZZ 1

#define QETH_IP_HEADER_SIZE 40

/* large receive scatter gather copy break */
#define QETH_RX_SG_CB (PAGE_SIZE >> 1)

struct qeth_hdr_layer3 {
      __u8  id;
      __u8  flags;
      __u16 inbound_checksum; /*TSO:__u16 seqno */
      __u32 token;            /*TSO: __u32 reserved */
      __u16 length;
      __u8  vlan_prio;
      __u8  ext_flags;
      __u16 vlan_id;
      __u16 frame_offset;
      __u8  dest_addr[16];
} __attribute__ ((packed));

struct qeth_hdr_layer2 {
      __u8 id;
      __u8 flags[3];
      __u8 port_no;
      __u8 hdr_length;
      __u16 pkt_length;
      __u16 seq_no;
      __u16 vlan_id;
      __u32 reserved;
      __u8 reserved2[16];
} __attribute__ ((packed));

struct qeth_hdr_osn {
      __u8 id;
      __u8 reserved;
      __u16 seq_no;
      __u16 reserved2;
      __u16 control_flags;
      __u16 pdu_length;
      __u8 reserved3[18];
      __u32 ccid;
} __attribute__ ((packed));

struct qeth_hdr {
      union {
            struct qeth_hdr_layer2 l2;
            struct qeth_hdr_layer3 l3;
            struct qeth_hdr_osn    osn;
      } hdr;
} __attribute__ ((packed));

/*TCP Segmentation Offload header*/
struct qeth_hdr_ext_tso {
        __u16 hdr_tot_len;
        __u8  imb_hdr_no;
        __u8  reserved;
        __u8  hdr_type;
        __u8  hdr_version;
        __u16 hdr_len;
        __u32 payload_len;
        __u16 mss;
        __u16 dg_hdr_len;
        __u8  padding[16];
} __attribute__ ((packed));

struct qeth_hdr_tso {
        struct qeth_hdr hdr;  /*hdr->hdr.l3.xxx*/
      struct qeth_hdr_ext_tso ext;
} __attribute__ ((packed));


/* flags for qeth_hdr.flags */
#define QETH_HDR_PASSTHRU 0x10
#define QETH_HDR_IPV6     0x80
#define QETH_HDR_CAST_MASK 0x07
enum qeth_cast_flags {
      QETH_CAST_UNICAST   = 0x06,
      QETH_CAST_MULTICAST = 0x04,
      QETH_CAST_BROADCAST = 0x05,
      QETH_CAST_ANYCAST   = 0x07,
      QETH_CAST_NOCAST    = 0x00,
};

enum qeth_layer2_frame_flags {
      QETH_LAYER2_FLAG_MULTICAST = 0x01,
      QETH_LAYER2_FLAG_BROADCAST = 0x02,
      QETH_LAYER2_FLAG_UNICAST   = 0x04,
      QETH_LAYER2_FLAG_VLAN      = 0x10,
};

enum qeth_header_ids {
      QETH_HEADER_TYPE_LAYER3 = 0x01,
      QETH_HEADER_TYPE_LAYER2 = 0x02,
      QETH_HEADER_TYPE_TSO    = 0x03,
      QETH_HEADER_TYPE_OSN    = 0x04,
};
/* flags for qeth_hdr.ext_flags */
#define QETH_HDR_EXT_VLAN_FRAME       0x01
#define QETH_HDR_EXT_TOKEN_ID         0x02
#define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
#define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
#define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
#define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
#define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/

static inline int
qeth_is_last_sbale(struct qdio_buffer_element *sbale)
{
      return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
}

enum qeth_qdio_buffer_states {
      /*
       * inbound: read out by driver; owned by hardware in order to be filled
       * outbound: owned by driver in order to be filled
       */
      QETH_QDIO_BUF_EMPTY,
      /*
       * inbound: filled by hardware; owned by driver in order to be read out
       * outbound: filled by driver; owned by hardware in order to be sent
       */
      QETH_QDIO_BUF_PRIMED,
};

enum qeth_qdio_info_states {
      QETH_QDIO_UNINITIALIZED,
      QETH_QDIO_ALLOCATED,
      QETH_QDIO_ESTABLISHED,
      QETH_QDIO_CLEANING
};

struct qeth_buffer_pool_entry {
      struct list_head list;
      struct list_head init_list;
      void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
};

struct qeth_qdio_buffer_pool {
      struct list_head entry_list;
      int buf_count;
};

struct qeth_qdio_buffer {
      struct qdio_buffer *buffer;
      volatile enum qeth_qdio_buffer_states state;
      /* the buffer pool entry currently associated to this buffer */
      struct qeth_buffer_pool_entry *pool_entry;
};

struct qeth_qdio_q {
      struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
      struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
      /*
       * buf_to_init means "buffer must be initialized by driver and must
       * be made available for hardware" -> state is set to EMPTY
       */
      volatile int next_buf_to_init;
} __attribute__ ((aligned(256)));

/* possible types of qeth large_send support */
enum qeth_large_send_types {
      QETH_LARGE_SEND_NO,
      QETH_LARGE_SEND_EDDP,
      QETH_LARGE_SEND_TSO,
};

struct qeth_qdio_out_buffer {
      struct qdio_buffer *buffer;
      atomic_t state;
      volatile int next_element_to_fill;
      struct sk_buff_head skb_list;
      struct list_head ctx_list;
};

struct qeth_card;

enum qeth_out_q_states {
       QETH_OUT_Q_UNLOCKED,
       QETH_OUT_Q_LOCKED,
       QETH_OUT_Q_LOCKED_FLUSH,
};

struct qeth_qdio_out_q {
      struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
      struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
      int queue_no;
      struct qeth_card *card;
      atomic_t state;
      volatile int do_pack;
      /*
       * index of buffer to be filled by driver; state EMPTY or PACKING
       */
      volatile int next_buf_to_fill;
      /*
       * number of buffers that are currently filled (PRIMED)
       * -> these buffers are hardware-owned
       */
      atomic_t used_buffers;
      /* indicates whether PCI flag must be set (or if one is outstanding) */
      atomic_t set_pci_flags_count;
} __attribute__ ((aligned(256)));

struct qeth_qdio_info {
      atomic_t state;
      /* input */
      struct qeth_qdio_q *in_q;
      struct qeth_qdio_buffer_pool in_buf_pool;
      struct qeth_qdio_buffer_pool init_pool;
      int in_buf_size;

      /* output */
      int no_out_queues;
      struct qeth_qdio_out_q **out_qs;

      /* priority queueing */
      int do_prio_queueing;
      int default_out_queue;
};

enum qeth_send_errors {
      QETH_SEND_ERROR_NONE,
      QETH_SEND_ERROR_LINK_FAILURE,
      QETH_SEND_ERROR_RETRY,
      QETH_SEND_ERROR_KICK_IT,
};

#define QETH_ETH_MAC_V4      0x0100 /* like v4 */
#define QETH_ETH_MAC_V6      0x3333 /* like v6 */
/* tr mc mac is longer, but that will be enough to detect mc frames */
#define QETH_TR_MAC_NC       0xc000 /* non-canonical */
#define QETH_TR_MAC_C        0x0300 /* canonical */

#define DEFAULT_ADD_HHLEN 0
#define MAX_ADD_HHLEN 1024

/**
 * buffer stuff for read channel
 */
#define QETH_CMD_BUFFER_NO    8

/**
 *  channel state machine
 */
enum qeth_channel_states {
      CH_STATE_UP,
      CH_STATE_DOWN,
      CH_STATE_ACTIVATING,
      CH_STATE_HALTED,
      CH_STATE_STOPPED,
      CH_STATE_RCD,
      CH_STATE_RCD_DONE,
};
/**
 * card state machine
 */
enum qeth_card_states {
      CARD_STATE_DOWN,
      CARD_STATE_HARDSETUP,
      CARD_STATE_SOFTSETUP,
      CARD_STATE_UP,
      CARD_STATE_RECOVER,
};

/**
 * Protocol versions
 */
enum qeth_prot_versions {
      QETH_PROT_IPV4 = 0x0004,
      QETH_PROT_IPV6 = 0x0006,
};

enum qeth_ip_types {
      QETH_IP_TYPE_NORMAL,
      QETH_IP_TYPE_VIPA,
      QETH_IP_TYPE_RXIP,
      QETH_IP_TYPE_DEL_ALL_MC,
};

enum qeth_cmd_buffer_state {
      BUF_STATE_FREE,
      BUF_STATE_LOCKED,
      BUF_STATE_PROCESSED,
};
/**
 * IP address and multicast list
 */
00630 struct qeth_ipaddr {
      struct list_head entry;
      enum qeth_ip_types type;
      enum qeth_ipa_setdelip_flags set_flags;
      enum qeth_ipa_setdelip_flags del_flags;
      int is_multicast;
      volatile int users;
      enum qeth_prot_versions proto;
      unsigned char mac[OSA_ADDR_LEN];
      union {
            struct {
                  unsigned int addr;
                  unsigned int mask;
            } a4;
            struct {
                  struct in6_addr addr;
                  unsigned int pfxlen;
            } a6;
      } u;
};

struct qeth_ipato_entry {
      struct list_head entry;
      enum qeth_prot_versions proto;
      char addr[16];
      int mask_bits;
};

struct qeth_ipato {
      int enabled;
      int invert4;
      int invert6;
      struct list_head entries;
};

struct qeth_channel;

struct qeth_cmd_buffer {
      enum qeth_cmd_buffer_state state;
      struct qeth_channel *channel;
      unsigned char *data;
      int rc;
      void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
};


/**
 * definition of a qeth channel, used for read and write
 */
00679 struct qeth_channel {
      enum qeth_channel_states state;
      struct ccw1 ccw;
      spinlock_t iob_lock;
      wait_queue_head_t wait_q;
      struct tasklet_struct irq_tasklet;
      struct ccw_device *ccwdev;
/*command buffer for control data*/
      struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
      atomic_t irq_pending;
      volatile int io_buf_no;
      volatile int buf_no;
};

/**
 *  OSA card related definitions
 */
00696 struct qeth_token {
      __u32 issuer_rm_w;
      __u32 issuer_rm_r;
      __u32 cm_filter_w;
      __u32 cm_filter_r;
      __u32 cm_connection_w;
      __u32 cm_connection_r;
      __u32 ulp_filter_w;
      __u32 ulp_filter_r;
      __u32 ulp_connection_w;
      __u32 ulp_connection_r;
};

struct qeth_seqno {
      __u32 trans_hdr;
      __u32 pdu_hdr;
      __u32 pdu_hdr_ack;
      __u16 ipa;
      __u32 pkt_seqno;
};

struct qeth_reply {
      struct list_head list;
      wait_queue_head_t wait_q;
      int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
      u32 seqno;
      unsigned long offset;
      atomic_t received;
      int rc;
      void *param;
      struct qeth_card *card;
      atomic_t refcnt;
};


struct qeth_card_blkt {
      int time_total;
      int inter_packet;
      int inter_packet_jumbo;
};

#define QETH_BROADCAST_WITH_ECHO    0x01
#define QETH_BROADCAST_WITHOUT_ECHO 0x02
#define QETH_LAYER2_MAC_READ      0x01
#define QETH_LAYER2_MAC_REGISTERED  0x02
struct qeth_card_info {
      unsigned short unit_addr2;
      unsigned short cula;
      unsigned short chpid;
      __u16 func_level;
      char mcl_level[QETH_MCL_LENGTH + 1];
      int guestlan;
      int mac_bits;
      int portname_required;
      int portno;
      char portname[9];
      enum qeth_card_types type;
      enum qeth_link_types link_type;
      int is_multicast_different;
      int initial_mtu;
      int max_mtu;
      int broadcast_capable;
      int unique_id;
      struct qeth_card_blkt blkt;
      __u32 csum_mask;
      enum qeth_ipa_promisc_modes promisc_mode;
};

struct qeth_card_options {
      struct qeth_routing_info route4;
      struct qeth_ipa_info ipa4;
      struct qeth_ipa_info adp; /*Adapter parameters*/
#ifdef CONFIG_QETH_IPV6
      struct qeth_routing_info route6;
      struct qeth_ipa_info ipa6;
#endif /* QETH_IPV6 */
      enum qeth_checksum_types checksum_type;
      int broadcast_mode;
      int macaddr_mode;
      int fake_broadcast;
      int add_hhlen;
      int fake_ll;
      int layer2;
      enum qeth_large_send_types large_send;
      int performance_stats;
      int rx_sg_cb;
};

/*
 * thread bits for qeth_card thread masks
 */
enum qeth_threads {
      QETH_SET_IP_THREAD  = 1,
      QETH_RECOVER_THREAD = 2,
      QETH_SET_PROMISC_MODE_THREAD = 4,
};

struct qeth_osn_info {
      int (*assist_cb)(struct net_device *dev, void *data);
      int (*data_cb)(struct sk_buff *skb);
};

struct qeth_card {
      struct list_head list;
      enum qeth_card_states state;
      int lan_online;
      spinlock_t lock;
/*hardware and sysfs stuff*/
      struct ccwgroup_device *gdev;
      struct qeth_channel read;
      struct qeth_channel write;
      struct qeth_channel data;

      struct net_device *dev;
      struct net_device_stats stats;

      struct qeth_card_info info;
      struct qeth_token token;
      struct qeth_seqno seqno;
      struct qeth_card_options options;

      wait_queue_head_t wait_q;
#ifdef CONFIG_QETH_VLAN
      spinlock_t vlanlock;
      struct vlan_group *vlangrp;
#endif
      struct work_struct kernel_thread_starter;
      spinlock_t thread_mask_lock;
      volatile unsigned long thread_start_mask;
      volatile unsigned long thread_allowed_mask;
      volatile unsigned long thread_running_mask;
      spinlock_t ip_lock;
      struct list_head ip_list;
      struct list_head *ip_tbd_list;
      struct qeth_ipato ipato;
      struct list_head cmd_waiter_list;
      /* QDIO buffer handling */
      struct qeth_qdio_info qdio;
      struct qeth_perf_stats perf_stats;
      int use_hard_stop;
      const struct header_ops *orig_header_ops;
      struct qeth_osn_info osn_info;
      atomic_t force_alloc_skb;
};

struct qeth_card_list_struct {
      struct list_head list;
      rwlock_t rwlock;
};

extern struct qeth_card_list_struct qeth_card_list;

/*notifier list */
struct qeth_notify_list_struct {
      struct list_head list;
      struct task_struct *task;
      int signum;
};
extern spinlock_t qeth_notify_lock;
extern struct list_head qeth_notify_list;

/*some helper functions*/

#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")

static inline __u8
qeth_get_ipa_adp_type(enum qeth_link_types link_type)
{
      switch (link_type) {
      case QETH_LINK_TYPE_HSTR:
            return 2;
      default:
            return 1;
      }
}

static inline struct sk_buff *
qeth_realloc_headroom(struct qeth_card *card, struct sk_buff *skb, int size)
{
      struct sk_buff *new_skb = skb;

      if (skb_headroom(skb) >= size)
            return skb;
      new_skb = skb_realloc_headroom(skb, size);
      if (!new_skb) 
            PRINT_ERR("Could not realloc headroom for qeth_hdr "
                    "on interface %s", QETH_CARD_IFNAME(card));
      return new_skb;
}

static inline struct sk_buff *
qeth_pskb_unshare(struct sk_buff *skb, gfp_t pri)
{
        struct sk_buff *nskb;
        if (!skb_cloned(skb))
                return skb;
        nskb = skb_copy(skb, pri);
        return nskb;
}

static inline void *
qeth_push_skb(struct qeth_card *card, struct sk_buff *skb, int size)
{
        void *hdr;

      hdr = (void *) skb_push(skb, size);
        /*
         * sanity check, the Linux memory allocation scheme should
         * never present us cases like this one (the qdio header size plus
         * the first 40 bytes of the paket cross a 4k boundary)
         */
        if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
            (((unsigned long) hdr + size +
              QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
                PRINT_ERR("Misaligned packet on interface %s. Discarded.",
                          QETH_CARD_IFNAME(card));
                return NULL;
        }
        return hdr;
}


static inline int
qeth_get_hlen(__u8 link_type)
{
#ifdef CONFIG_QETH_IPV6
      switch (link_type) {
      case QETH_LINK_TYPE_HSTR:
      case QETH_LINK_TYPE_LANE_TR:
            return sizeof(struct qeth_hdr_tso) + TR_HLEN;
      default:
#ifdef CONFIG_QETH_VLAN
            return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
#else
            return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
#endif
      }
#else  /* CONFIG_QETH_IPV6 */
#ifdef CONFIG_QETH_VLAN
      return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
#else
      return sizeof(struct qeth_hdr_tso);
#endif
#endif /* CONFIG_QETH_IPV6 */
}

static inline unsigned short
qeth_get_netdev_flags(struct qeth_card *card)
{
      if (card->options.layer2 &&
         (card->info.type == QETH_CARD_TYPE_OSAE))
            return 0;
      switch (card->info.type) {
      case QETH_CARD_TYPE_IQD:
      case QETH_CARD_TYPE_OSN:
            return IFF_NOARP;
#ifdef CONFIG_QETH_IPV6
      default:
            return 0;
#else
      default:
            return IFF_NOARP;
#endif
      }
}

static inline int
qeth_get_initial_mtu_for_card(struct qeth_card * card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_UNKNOWN:
            return 1500;
      case QETH_CARD_TYPE_IQD:
            return card->info.max_mtu;
      case QETH_CARD_TYPE_OSAE:
            switch (card->info.link_type) {
            case QETH_LINK_TYPE_HSTR:
            case QETH_LINK_TYPE_LANE_TR:
                  return 2000;
            default:
                  return 1492;
            }
      default:
            return 1500;
      }
}

static inline int
qeth_get_max_mtu_for_card(int cardtype)
{
      switch (cardtype) {

      case QETH_CARD_TYPE_UNKNOWN:
      case QETH_CARD_TYPE_OSAE:
      case QETH_CARD_TYPE_OSN:
            return 61440;
      case QETH_CARD_TYPE_IQD:
            return 57344;
      default:
            return 1500;
      }
}

static inline int
qeth_get_mtu_out_of_mpc(int cardtype)
{
      switch (cardtype) {
      case QETH_CARD_TYPE_IQD:
            return 1;
      default:
            return 0;
      }
}

static inline int
qeth_get_mtu_outof_framesize(int framesize)
{
      switch (framesize) {
      case 0x4000:
            return 8192;
      case 0x6000:
            return 16384;
      case 0xa000:
            return 32768;
      case 0xffff:
            return 57344;
      default:
            return 0;
      }
}

static inline int
qeth_mtu_is_valid(struct qeth_card * card, int mtu)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_OSAE:
            return ((mtu >= 576) && (mtu <= 61440));
      case QETH_CARD_TYPE_IQD:
            return ((mtu >= 576) &&
                  (mtu <= card->info.max_mtu + 4096 - 32));
      case QETH_CARD_TYPE_OSN:
      case QETH_CARD_TYPE_UNKNOWN:
      default:
            return 1;
      }
}

static inline int
qeth_get_arphdr_type(int cardtype, int linktype)
{
      switch (cardtype) {
      case QETH_CARD_TYPE_OSAE:
      case QETH_CARD_TYPE_OSN:
            switch (linktype) {
            case QETH_LINK_TYPE_LANE_TR:
            case QETH_LINK_TYPE_HSTR:
                  return ARPHRD_IEEE802_TR;
            default:
                  return ARPHRD_ETHER;
            }
      case QETH_CARD_TYPE_IQD:
      default:
            return ARPHRD_ETHER;
      }
}

static inline int
qeth_get_micros(void)
{
      return (int) (get_clock() >> 12);
}

static inline int
qeth_get_qdio_q_format(struct qeth_card *card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_IQD:
            return 2;
      default:
            return 0;
      }
}

static inline int
qeth_isxdigit(char * buf)
{
      while (*buf) {
            if (!isxdigit(*buf++))
                  return 0;
      }
      return 1;
}

static inline void
qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
{
      sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
}

static inline int
qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
{
      int count = 0, rc = 0;
      int in[4];
      char c;

      rc = sscanf(buf, "%u.%u.%u.%u%c",
                &in[0], &in[1], &in[2], &in[3], &c);
      if (rc != 4 && (rc != 5 || c != '\n'))
            return -EINVAL;
      for (count = 0; count < 4; count++) {
            if (in[count] > 255)
                  return -EINVAL;
            addr[count] = in[count];
      }
      return 0;
}

static inline void
qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
{
      sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
                 ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
                 addr[0], addr[1], addr[2], addr[3],
                 addr[4], addr[5], addr[6], addr[7],
                 addr[8], addr[9], addr[10], addr[11],
                 addr[12], addr[13], addr[14], addr[15]);
}

static inline int
qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
{
      const char *end, *end_tmp, *start;
      __u16 *in;
        char num[5];
        int num2, cnt, out, found, save_cnt;
        unsigned short in_tmp[8] = {0, };

      cnt = out = found = save_cnt = num2 = 0;
        end = start = buf;
      in = (__u16 *) addr;
      memset(in, 0, 16);
        while (*end) {
                end = strchr(start,':');
                if (end == NULL) {
                        end = buf + strlen(buf);
                  if ((end_tmp = strchr(start, '\n')) != NULL)
                        end = end_tmp;
                  out = 1;
                }
                if ((end - start)) {
                        memset(num, 0, 5);
                  if ((end - start) > 4)
                        return -EINVAL;
                        memcpy(num, start, end - start);
                  if (!qeth_isxdigit(num))
                        return -EINVAL;
                        sscanf(start, "%x", &num2);
                        if (found)
                                in_tmp[save_cnt++] = num2;
                        else
                                in[cnt++] = num2;
                        if (out)
                                break;
                } else {
                  if (found)
                        return -EINVAL;
                        found = 1;
            }
            start = ++end;
        }
      if (cnt + save_cnt > 8)
            return -EINVAL;
        cnt = 7;
      while (save_cnt)
                in[cnt--] = in_tmp[--save_cnt];
      return 0;
}

static inline void
qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
                  char *buf)
{
      if (proto == QETH_PROT_IPV4)
            qeth_ipaddr4_to_string(addr, buf);
      else if (proto == QETH_PROT_IPV6)
            qeth_ipaddr6_to_string(addr, buf);
}

static inline int
qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
                  __u8 *addr)
{
      if (proto == QETH_PROT_IPV4)
            return qeth_string_to_ipaddr4(buf, addr);
      else if (proto == QETH_PROT_IPV6)
            return qeth_string_to_ipaddr6(buf, addr);
      else
            return -EINVAL;
}

extern int
qeth_setrouting_v4(struct qeth_card *);
extern int
qeth_setrouting_v6(struct qeth_card *);

extern int
qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);

extern void
qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);

extern int
qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);

extern void
qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);

extern int
qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);

extern void
qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);

extern int
qeth_notifier_register(struct task_struct *, int );

extern int
qeth_notifier_unregister(struct task_struct * );

extern void
qeth_schedule_recovery(struct qeth_card *);

extern int
qeth_realloc_buffer_pool(struct qeth_card *, int);

extern int
qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);

extern void
qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
             struct sk_buff *, int, int);
extern void
qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);

extern int
qeth_osn_assist(struct net_device *, void *, int);

extern int
qeth_osn_register(unsigned char *read_dev_no,
                 struct net_device **,
                 int (*assist_cb)(struct net_device *, void *),
                 int (*data_cb)(struct sk_buff *));

extern void
qeth_osn_deregister(struct net_device *);

#endif /* __QETH_H__ */

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