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rndis.c

/*
 * RNDIS MSG parser
 *
 * Version:     $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
 *
 * Authors: Benedikt Spranger, Pengutronix
 *          Robert Schwebel, Pengutronix
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              version 2, as published by the Free Software Foundation.
 *
 *          This software was originally developed in conformance with
 *          Microsoft's Remote NDIS Specification License Agreement.
 *
 * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
 *          Fixed message length bug in init_response
 *
 * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
 *          Fixed rndis_rm_hdr length bug.
 *
 * Copyright (C) 2004 by David Brownell
 *          updates to merge with Linux 2.6, better match RNDIS spec
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/proc_fs.h>
#include <linux/netdevice.h>

#include <asm/io.h>
#include <asm/byteorder.h>
#include <asm/system.h>
#include <asm/unaligned.h>


#undef      RNDIS_PM
#undef      RNDIS_WAKEUP
#undef      VERBOSE

#include "rndis.h"


/* The driver for your USB chip needs to support ep0 OUT to work with
 * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
 *
 * Windows hosts need an INF file like Documentation/usb/linux.inf
 * and will be happier if you provide the host_addr module parameter.
 */

#if 0
#define DBG(str,args...) do { \
      if (rndis_debug) \
            printk(KERN_DEBUG str , ## args ); \
      } while (0)
static int rndis_debug = 0;

module_param (rndis_debug, int, 0);
MODULE_PARM_DESC (rndis_debug, "enable debugging");

#else

#define rndis_debug           0
#define DBG(str,args...)      do{}while(0)
#endif

#define RNDIS_MAX_CONFIGS     1


static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];

/* Driver Version */
static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);

/* Function Prototypes */
static rndis_resp_t *rndis_add_response (int configNr, u32 length);


/* supported OIDs */
static const u32 oid_supported_list [] =
{
      /* the general stuff */
      OID_GEN_SUPPORTED_LIST,
      OID_GEN_HARDWARE_STATUS,
      OID_GEN_MEDIA_SUPPORTED,
      OID_GEN_MEDIA_IN_USE,
      OID_GEN_MAXIMUM_FRAME_SIZE,
      OID_GEN_LINK_SPEED,
      OID_GEN_TRANSMIT_BLOCK_SIZE,
      OID_GEN_RECEIVE_BLOCK_SIZE,
      OID_GEN_VENDOR_ID,
      OID_GEN_VENDOR_DESCRIPTION,
      OID_GEN_VENDOR_DRIVER_VERSION,
      OID_GEN_CURRENT_PACKET_FILTER,
      OID_GEN_MAXIMUM_TOTAL_SIZE,
      OID_GEN_MEDIA_CONNECT_STATUS,
      OID_GEN_PHYSICAL_MEDIUM,
#if 0
      OID_GEN_RNDIS_CONFIG_PARAMETER,
#endif

      /* the statistical stuff */
      OID_GEN_XMIT_OK,
      OID_GEN_RCV_OK,
      OID_GEN_XMIT_ERROR,
      OID_GEN_RCV_ERROR,
      OID_GEN_RCV_NO_BUFFER,
#ifdef      RNDIS_OPTIONAL_STATS
      OID_GEN_DIRECTED_BYTES_XMIT,
      OID_GEN_DIRECTED_FRAMES_XMIT,
      OID_GEN_MULTICAST_BYTES_XMIT,
      OID_GEN_MULTICAST_FRAMES_XMIT,
      OID_GEN_BROADCAST_BYTES_XMIT,
      OID_GEN_BROADCAST_FRAMES_XMIT,
      OID_GEN_DIRECTED_BYTES_RCV,
      OID_GEN_DIRECTED_FRAMES_RCV,
      OID_GEN_MULTICAST_BYTES_RCV,
      OID_GEN_MULTICAST_FRAMES_RCV,
      OID_GEN_BROADCAST_BYTES_RCV,
      OID_GEN_BROADCAST_FRAMES_RCV,
      OID_GEN_RCV_CRC_ERROR,
      OID_GEN_TRANSMIT_QUEUE_LENGTH,
#endif      /* RNDIS_OPTIONAL_STATS */

      /* mandatory 802.3 */
      /* the general stuff */
      OID_802_3_PERMANENT_ADDRESS,
      OID_802_3_CURRENT_ADDRESS,
      OID_802_3_MULTICAST_LIST,
      OID_802_3_MAC_OPTIONS,
      OID_802_3_MAXIMUM_LIST_SIZE,

      /* the statistical stuff */
      OID_802_3_RCV_ERROR_ALIGNMENT,
      OID_802_3_XMIT_ONE_COLLISION,
      OID_802_3_XMIT_MORE_COLLISIONS,
#ifdef      RNDIS_OPTIONAL_STATS
      OID_802_3_XMIT_DEFERRED,
      OID_802_3_XMIT_MAX_COLLISIONS,
      OID_802_3_RCV_OVERRUN,
      OID_802_3_XMIT_UNDERRUN,
      OID_802_3_XMIT_HEARTBEAT_FAILURE,
      OID_802_3_XMIT_TIMES_CRS_LOST,
      OID_802_3_XMIT_LATE_COLLISIONS,
#endif      /* RNDIS_OPTIONAL_STATS */

#ifdef      RNDIS_PM
      /* PM and wakeup are mandatory for USB: */

      /* power management */
      OID_PNP_CAPABILITIES,
      OID_PNP_QUERY_POWER,
      OID_PNP_SET_POWER,

#ifdef      RNDIS_WAKEUP
      /* wake up host */
      OID_PNP_ENABLE_WAKE_UP,
      OID_PNP_ADD_WAKE_UP_PATTERN,
      OID_PNP_REMOVE_WAKE_UP_PATTERN,
#endif      /* RNDIS_WAKEUP */
#endif      /* RNDIS_PM */
};


/* NDIS Functions */
static int
gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
            rndis_resp_t *r)
{
      int               retval = -ENOTSUPP;
      u32               length = 4; /* usually */
      __le32                  *outbuf;
      int               i, count;
      rndis_query_cmplt_type  *resp;

      if (!r) return -ENOMEM;
      resp = (rndis_query_cmplt_type *) r->buf;

      if (!resp) return -ENOMEM;

      if (buf_len && rndis_debug > 1) {
            DBG("query OID %08x value, len %d:\n", OID, buf_len);
            for (i = 0; i < buf_len; i += 16) {
                  DBG("%03d: %08x %08x %08x %08x\n", i,
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 4])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 8])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 12])));
            }
      }

      /* response goes here, right after the header */
      outbuf = (__le32 *) &resp[1];
      resp->InformationBufferOffset = __constant_cpu_to_le32 (16);

      switch (OID) {

      /* general oids (table 4-1) */

      /* mandatory */
      case OID_GEN_SUPPORTED_LIST:
            DBG("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
            length = sizeof (oid_supported_list);
            count  = length / sizeof (u32);
            for (i = 0; i < count; i++)
                  outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_HARDWARE_STATUS:
            DBG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
            /* Bogus question!
             * Hardware must be ready to receive high level protocols.
             * BTW:
             * reddite ergo quae sunt Caesaris Caesari
             * et quae sunt Dei Deo!
             */
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_MEDIA_SUPPORTED:
            DBG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
            *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_MEDIA_IN_USE:
            DBG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
            /* one medium, one transport... (maybe you do it better) */
            *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_MAXIMUM_FRAME_SIZE:
            DBG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].dev) {
                  *outbuf = cpu_to_le32 (
                        rndis_per_dev_params [configNr].dev->mtu);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_LINK_SPEED:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].media_state
                        == NDIS_MEDIA_STATE_DISCONNECTED)
                  *outbuf = __constant_cpu_to_le32 (0);
            else
                  *outbuf = cpu_to_le32 (
                        rndis_per_dev_params [configNr].speed);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_TRANSMIT_BLOCK_SIZE:
            DBG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].dev) {
                  *outbuf = cpu_to_le32 (
                        rndis_per_dev_params [configNr].dev->mtu);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_RECEIVE_BLOCK_SIZE:
            DBG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].dev) {
                  *outbuf = cpu_to_le32 (
                        rndis_per_dev_params [configNr].dev->mtu);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_VENDOR_ID:
            DBG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
            *outbuf = cpu_to_le32 (
                  rndis_per_dev_params [configNr].vendorID);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_VENDOR_DESCRIPTION:
            DBG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
            length = strlen (rndis_per_dev_params [configNr].vendorDescr);
            memcpy (outbuf,
                  rndis_per_dev_params [configNr].vendorDescr, length);
            retval = 0;
            break;

      case OID_GEN_VENDOR_DRIVER_VERSION:
            DBG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
            /* Created as LE */
            *outbuf = rndis_driver_version;
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_CURRENT_PACKET_FILTER:
            DBG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
            *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_MAXIMUM_TOTAL_SIZE:
            DBG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
            retval = 0;
            break;

      /* mandatory */
      case OID_GEN_MEDIA_CONNECT_STATUS:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
            *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                                    .media_state);
            retval = 0;
            break;

      case OID_GEN_PHYSICAL_MEDIUM:
            DBG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

      /* The RNDIS specification is incomplete/wrong.   Some versions
       * of MS-Windows expect OIDs that aren't specified there.  Other
       * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
       */
      case OID_GEN_MAC_OPTIONS:           /* from WinME */
            DBG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32(
                    NDIS_MAC_OPTION_RECEIVE_SERIALIZED
                  | NDIS_MAC_OPTION_FULL_DUPLEX);
            retval = 0;
            break;

      /* statistics OIDs (table 4-2) */

      /* mandatory */
      case OID_GEN_XMIT_OK:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (
                      rndis_per_dev_params [configNr].stats->tx_packets -
                      rndis_per_dev_params [configNr].stats->tx_errors -
                      rndis_per_dev_params [configNr].stats->tx_dropped);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_RCV_OK:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (
                      rndis_per_dev_params [configNr].stats->rx_packets -
                      rndis_per_dev_params [configNr].stats->rx_errors -
                      rndis_per_dev_params [configNr].stats->rx_dropped);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_XMIT_ERROR:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->tx_errors);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_RCV_ERROR:
            if (rndis_debug > 1)
                  DBG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_errors);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_GEN_RCV_NO_BUFFER:
            DBG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_dropped);
                  retval = 0;
            }
            break;

#ifdef      RNDIS_OPTIONAL_STATS
      case OID_GEN_DIRECTED_BYTES_XMIT:
            DBG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
            /*
             * Aunt Tilly's size of shoes
             * minus antarctica count of penguins
             * divided by weight of Alpha Centauri
             */
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (
                        (rndis_per_dev_params [configNr]
                              .stats->tx_packets -
                         rndis_per_dev_params [configNr]
                               .stats->tx_errors -
                         rndis_per_dev_params [configNr]
                               .stats->tx_dropped)
                        * 123);
                  retval = 0;
            }
            break;

      case OID_GEN_DIRECTED_FRAMES_XMIT:
            DBG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
            /* dito */
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (
                        (rndis_per_dev_params [configNr]
                              .stats->tx_packets -
                         rndis_per_dev_params [configNr]
                               .stats->tx_errors -
                         rndis_per_dev_params [configNr]
                               .stats->tx_dropped)
                        / 123);
                  retval = 0;
            }
            break;

      case OID_GEN_MULTICAST_BYTES_XMIT:
            DBG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->multicast*1234);
                  retval = 0;
            }
            break;

      case OID_GEN_MULTICAST_FRAMES_XMIT:
            DBG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->multicast);
                  retval = 0;
            }
            break;

      case OID_GEN_BROADCAST_BYTES_XMIT:
            DBG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->tx_packets/42*255);
                  retval = 0;
            }
            break;

      case OID_GEN_BROADCAST_FRAMES_XMIT:
            DBG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->tx_packets/42);
                  retval = 0;
            }
            break;

      case OID_GEN_DIRECTED_BYTES_RCV:
            DBG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

      case OID_GEN_DIRECTED_FRAMES_RCV:
            DBG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

      case OID_GEN_MULTICAST_BYTES_RCV:
            DBG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->multicast * 1111);
                  retval = 0;
            }
            break;

      case OID_GEN_MULTICAST_FRAMES_RCV:
            DBG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->multicast);
                  retval = 0;
            }
            break;

      case OID_GEN_BROADCAST_BYTES_RCV:
            DBG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_packets/42*255);
                  retval = 0;
            }
            break;

      case OID_GEN_BROADCAST_FRAMES_RCV:
            DBG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_packets/42);
                  retval = 0;
            }
            break;

      case OID_GEN_RCV_CRC_ERROR:
            DBG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_crc_errors);
                  retval = 0;
            }
            break;

      case OID_GEN_TRANSMIT_QUEUE_LENGTH:
            DBG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;
#endif      /* RNDIS_OPTIONAL_STATS */

      /* ieee802.3 OIDs (table 4-3) */

      /* mandatory */
      case OID_802_3_PERMANENT_ADDRESS:
            DBG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].dev) {
                  length = ETH_ALEN;
                  memcpy (outbuf,
                        rndis_per_dev_params [configNr].host_mac,
                        length);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_802_3_CURRENT_ADDRESS:
            DBG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].dev) {
                  length = ETH_ALEN;
                  memcpy (outbuf,
                        rndis_per_dev_params [configNr].host_mac,
                        length);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_802_3_MULTICAST_LIST:
            DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
            /* Multicast base address only */
            *outbuf = __constant_cpu_to_le32 (0xE0000000);
            retval = 0;
            break;

      /* mandatory */
      case OID_802_3_MAXIMUM_LIST_SIZE:
            DBG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
            /* Multicast base address only */
            *outbuf = __constant_cpu_to_le32 (1);
            retval = 0;
            break;

      case OID_802_3_MAC_OPTIONS:
            DBG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
            break;

      /* ieee802.3 statistics OIDs (table 4-4) */

      /* mandatory */
      case OID_802_3_RCV_ERROR_ALIGNMENT:
            DBG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
            if (rndis_per_dev_params [configNr].stats) {
                  *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
                              .stats->rx_frame_errors);
                  retval = 0;
            }
            break;

      /* mandatory */
      case OID_802_3_XMIT_ONE_COLLISION:
            DBG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

      /* mandatory */
      case OID_802_3_XMIT_MORE_COLLISIONS:
            DBG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
            *outbuf = __constant_cpu_to_le32 (0);
            retval = 0;
            break;

#ifdef      RNDIS_OPTIONAL_STATS
      case OID_802_3_XMIT_DEFERRED:
            DBG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_XMIT_MAX_COLLISIONS:
            DBG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_RCV_OVERRUN:
            DBG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_XMIT_UNDERRUN:
            DBG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_XMIT_HEARTBEAT_FAILURE:
            DBG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_XMIT_TIMES_CRS_LOST:
            DBG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
            /* TODO */
            break;

      case OID_802_3_XMIT_LATE_COLLISIONS:
            DBG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
            /* TODO */
            break;
#endif      /* RNDIS_OPTIONAL_STATS */

#ifdef      RNDIS_PM
      /* power management OIDs (table 4-5) */
      case OID_PNP_CAPABILITIES:
            DBG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);

            /* for now, no wakeup capabilities */
            length = sizeof (struct NDIS_PNP_CAPABILITIES);
            memset(outbuf, 0, length);
            retval = 0;
            break;
      case OID_PNP_QUERY_POWER:
            DBG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
                        le32_to_cpu(get_unaligned((__le32 *)buf)) - 1);
            /* only suspend is a real power state, and
             * it can't be entered by OID_PNP_SET_POWER...
             */
            length = 0;
            retval = 0;
            break;
#endif

      default:
            printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
                   __FUNCTION__, OID);
      }
      if (retval < 0)
            length = 0;

      resp->InformationBufferLength = cpu_to_le32 (length);
      r->length = length + sizeof *resp;
      resp->MessageLength = cpu_to_le32 (r->length);
      return retval;
}

static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
                  rndis_resp_t *r)
{
      rndis_set_cmplt_type          *resp;
      int                     i, retval = -ENOTSUPP;
      struct rndis_params           *params;

      if (!r)
            return -ENOMEM;
      resp = (rndis_set_cmplt_type *) r->buf;
      if (!resp)
            return -ENOMEM;

      if (buf_len && rndis_debug > 1) {
            DBG("set OID %08x value, len %d:\n", OID, buf_len);
            for (i = 0; i < buf_len; i += 16) {
                  DBG("%03d: %08x %08x %08x %08x\n", i,
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 4])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 8])),
                        le32_to_cpu(get_unaligned((__le32 *)
                              &buf[i + 12])));
            }
      }

      params = &rndis_per_dev_params [configNr];
      switch (OID) {
      case OID_GEN_CURRENT_PACKET_FILTER:

            /* these NDIS_PACKET_TYPE_* bitflags are shared with
             * cdc_filter; it's not RNDIS-specific
             * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
             *    PROMISCUOUS, DIRECTED,
             *    MULTICAST, ALL_MULTICAST, BROADCAST
             */
            *params->filter = (u16) le32_to_cpu(get_unaligned(
                        (__le32 *)buf));
            DBG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
                  __FUNCTION__, *params->filter);

            /* this call has a significant side effect:  it's
             * what makes the packet flow start and stop, like
             * activating the CDC Ethernet altsetting.
             */
#ifdef      RNDIS_PM
update_linkstate:
#endif
            retval = 0;
            if (*params->filter) {
                  params->state = RNDIS_DATA_INITIALIZED;
                  netif_carrier_on(params->dev);
                  if (netif_running(params->dev))
                        netif_wake_queue (params->dev);
            } else {
                  params->state = RNDIS_INITIALIZED;
                  netif_carrier_off (params->dev);
                  netif_stop_queue (params->dev);
            }
            break;

      case OID_802_3_MULTICAST_LIST:
            /* I think we can ignore this */
            DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
            retval = 0;
            break;
#if 0
      case OID_GEN_RNDIS_CONFIG_PARAMETER:
            {
            struct rndis_config_parameter *param;
            param = (struct rndis_config_parameter *) buf;
            DBG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
                  __FUNCTION__,
                  min(cpu_to_le32(param->ParameterNameLength),80),
                  buf + param->ParameterNameOffset);
            retval = 0;
            }
            break;
#endif

#ifdef      RNDIS_PM
      case OID_PNP_SET_POWER:
            /* The only real power state is USB suspend, and RNDIS requests
             * can't enter it; this one isn't really about power.  After
             * resuming, Windows forces a reset, and then SET_POWER D0.
             * FIXME ... then things go batty; Windows wedges itself.
             */
            i = le32_to_cpu(get_unaligned((__le32 *)buf));
            DBG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
            switch (i) {
            case NdisDeviceStateD0:
                  *params->filter = params->saved_filter;
                  goto update_linkstate;
            case NdisDeviceStateD3:
            case NdisDeviceStateD2:
            case NdisDeviceStateD1:
                  params->saved_filter = *params->filter;
                  retval = 0;
                  break;
            }
            break;

#ifdef      RNDIS_WAKEUP
      // no wakeup support advertised, so wakeup OIDs always fail:
      //  - OID_PNP_ENABLE_WAKE_UP
      //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
#endif

#endif      /* RNDIS_PM */

      default:
            printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
                   __FUNCTION__, OID, buf_len);
      }

      return retval;
}

/*
 * Response Functions
 */

static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
{
      rndis_init_cmplt_type   *resp;
      rndis_resp_t            *r;

      if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;

      r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_init_cmplt_type *) r->buf;

      resp->MessageType = __constant_cpu_to_le32 (
                  REMOTE_NDIS_INITIALIZE_CMPLT);
      resp->MessageLength = __constant_cpu_to_le32 (52);
      resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
      resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
      resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
      resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
      resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
      resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
      resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
      resp->MaxTransferSize = cpu_to_le32 (
              rndis_per_dev_params [configNr].dev->mtu
            + sizeof (struct ethhdr)
            + sizeof (struct rndis_packet_msg_type)
            + 22);
      resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
      resp->AFListOffset = __constant_cpu_to_le32 (0);
      resp->AFListSize = __constant_cpu_to_le32 (0);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);

      return 0;
}

static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
{
      rndis_query_cmplt_type *resp;
      rndis_resp_t            *r;

      // DBG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
      if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;

      /*
       * we need more memory:
       * gen_ndis_query_resp expects enough space for
       * rndis_query_cmplt_type followed by data.
       * oid_supported_list is the largest data reply
       */
      r = rndis_add_response (configNr,
            sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_query_cmplt_type *) r->buf;

      resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
      resp->RequestID = buf->RequestID; /* Still LE in msg buffer */

      if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
                  le32_to_cpu(buf->InformationBufferOffset)
                              + 8 + (u8 *) buf,
                  le32_to_cpu(buf->InformationBufferLength),
                  r)) {
            /* OID not supported */
            resp->Status = __constant_cpu_to_le32 (
                        RNDIS_STATUS_NOT_SUPPORTED);
            resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
            resp->InformationBufferLength = __constant_cpu_to_le32 (0);
            resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
      } else
            resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);
      return 0;
}

static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
{
      u32               BufLength, BufOffset;
      rndis_set_cmplt_type    *resp;
      rndis_resp_t            *r;

      r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_set_cmplt_type *) r->buf;

      BufLength = le32_to_cpu (buf->InformationBufferLength);
      BufOffset = le32_to_cpu (buf->InformationBufferOffset);

#ifdef      VERBOSE
      DBG("%s: Length: %d\n", __FUNCTION__, BufLength);
      DBG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
      DBG("%s: InfoBuffer: ", __FUNCTION__);

      for (i = 0; i < BufLength; i++) {
            DBG("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
      }

      DBG("\n");
#endif

      resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
      resp->MessageLength = __constant_cpu_to_le32 (16);
      resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
      if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
                  ((u8 *) buf) + 8 + BufOffset, BufLength, r))
            resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
      else
            resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);

      return 0;
}

static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
{
      rndis_reset_cmplt_type  *resp;
      rndis_resp_t            *r;

      r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_reset_cmplt_type *) r->buf;

      resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
      resp->MessageLength = __constant_cpu_to_le32 (16);
      resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
      /* resent information */
      resp->AddressingReset = __constant_cpu_to_le32 (1);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);

      return 0;
}

static int rndis_keepalive_response (int configNr,
                        rndis_keepalive_msg_type *buf)
{
      rndis_keepalive_cmplt_type    *resp;
      rndis_resp_t                  *r;

      /* host "should" check only in RNDIS_DATA_INITIALIZED state */

      r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_keepalive_cmplt_type *) r->buf;

      resp->MessageType = __constant_cpu_to_le32 (
                  REMOTE_NDIS_KEEPALIVE_CMPLT);
      resp->MessageLength = __constant_cpu_to_le32 (16);
      resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
      resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);

      return 0;
}


/*
 * Device to Host Comunication
 */
static int rndis_indicate_status_msg (int configNr, u32 status)
{
      rndis_indicate_status_msg_type      *resp;
      rndis_resp_t                  *r;

      if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
            return -ENOTSUPP;

      r = rndis_add_response (configNr,
                        sizeof (rndis_indicate_status_msg_type));
      if (!r)
            return -ENOMEM;
      resp = (rndis_indicate_status_msg_type *) r->buf;

      resp->MessageType = __constant_cpu_to_le32 (
                  REMOTE_NDIS_INDICATE_STATUS_MSG);
      resp->MessageLength = __constant_cpu_to_le32 (20);
      resp->Status = cpu_to_le32 (status);
      resp->StatusBufferLength = __constant_cpu_to_le32 (0);
      resp->StatusBufferOffset = __constant_cpu_to_le32 (0);

      if (rndis_per_dev_params [configNr].ack)
            rndis_per_dev_params [configNr].ack (
                  rndis_per_dev_params [configNr].dev);
      return 0;
}

int rndis_signal_connect (int configNr)
{
      rndis_per_dev_params [configNr].media_state
                  = NDIS_MEDIA_STATE_CONNECTED;
      return rndis_indicate_status_msg (configNr,
                                RNDIS_STATUS_MEDIA_CONNECT);
}

int rndis_signal_disconnect (int configNr)
{
      rndis_per_dev_params [configNr].media_state
                  = NDIS_MEDIA_STATE_DISCONNECTED;
      return rndis_indicate_status_msg (configNr,
                                RNDIS_STATUS_MEDIA_DISCONNECT);
}

void rndis_uninit (int configNr)
{
      u8 *buf;
      u32 length;

      if (configNr >= RNDIS_MAX_CONFIGS)
            return;
      rndis_per_dev_params [configNr].used = 0;
      rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;

      /* drain the response queue */
      while ((buf = rndis_get_next_response(configNr, &length)))
            rndis_free_response(configNr, buf);
}

void rndis_set_host_mac (int configNr, const u8 *addr)
{
      rndis_per_dev_params [configNr].host_mac = addr;
}

/*
 * Message Parser
 */
int rndis_msg_parser (u8 configNr, u8 *buf)
{
      u32 MsgType, MsgLength;
      __le32 *tmp;
      struct rndis_params           *params;

      if (!buf)
            return -ENOMEM;

      tmp = (__le32 *) buf;
      MsgType   = le32_to_cpu(get_unaligned(tmp++));
      MsgLength = le32_to_cpu(get_unaligned(tmp++));

      if (configNr >= RNDIS_MAX_CONFIGS)
            return -ENOTSUPP;
      params = &rndis_per_dev_params [configNr];

      /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
       * rx/tx statistics and link status, in addition to KEEPALIVE traffic
       * and normal HC level polling to see if there's any IN traffic.
       */

      /* For USB: responses may take up to 10 seconds */
      switch (MsgType) {
      case REMOTE_NDIS_INITIALIZE_MSG:
            DBG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
                  __FUNCTION__ );
            params->state = RNDIS_INITIALIZED;
            return  rndis_init_response (configNr,
                              (rndis_init_msg_type *) buf);

      case REMOTE_NDIS_HALT_MSG:
            DBG("%s: REMOTE_NDIS_HALT_MSG\n",
                  __FUNCTION__ );
            params->state = RNDIS_UNINITIALIZED;
            if (params->dev) {
                  netif_carrier_off (params->dev);
                  netif_stop_queue (params->dev);
            }
            return 0;

      case REMOTE_NDIS_QUERY_MSG:
            return rndis_query_response (configNr,
                              (rndis_query_msg_type *) buf);

      case REMOTE_NDIS_SET_MSG:
            return rndis_set_response (configNr,
                              (rndis_set_msg_type *) buf);

      case REMOTE_NDIS_RESET_MSG:
            DBG("%s: REMOTE_NDIS_RESET_MSG\n",
                  __FUNCTION__ );
            return rndis_reset_response (configNr,
                              (rndis_reset_msg_type *) buf);

      case REMOTE_NDIS_KEEPALIVE_MSG:
            /* For USB: host does this every 5 seconds */
            if (rndis_debug > 1)
                  DBG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
                        __FUNCTION__ );
            return rndis_keepalive_response (configNr,
                                     (rndis_keepalive_msg_type *)
                                     buf);

      default:
            /* At least Windows XP emits some undefined RNDIS messages.
             * In one case those messages seemed to relate to the host
             * suspending itself.
             */
            printk (KERN_WARNING
                  "%s: unknown RNDIS message 0x%08X len %d\n",
                  __FUNCTION__ , MsgType, MsgLength);
            {
                  unsigned i;
                  for (i = 0; i < MsgLength; i += 16) {
                        DBG("%03d: "
                              " %02x %02x %02x %02x"
                              " %02x %02x %02x %02x"
                              " %02x %02x %02x %02x"
                              " %02x %02x %02x %02x"
                              "\n",
                              i,
                              buf[i], buf [i+1],
                                    buf[i+2], buf[i+3],
                              buf[i+4], buf [i+5],
                                    buf[i+6], buf[i+7],
                              buf[i+8], buf [i+9],
                                    buf[i+10], buf[i+11],
                              buf[i+12], buf [i+13],
                                    buf[i+14], buf[i+15]);
                  }
            }
            break;
      }

      return -ENOTSUPP;
}

int rndis_register (int (* rndis_control_ack) (struct net_device *))
{
      u8 i;

      for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
            if (!rndis_per_dev_params [i].used) {
                  rndis_per_dev_params [i].used = 1;
                  rndis_per_dev_params [i].ack = rndis_control_ack;
                  DBG("%s: configNr = %d\n", __FUNCTION__, i);
                  return i;
            }
      }
      DBG("failed\n");

      return -1;
}

void rndis_deregister (int configNr)
{
      DBG("%s: \n", __FUNCTION__ );

      if (configNr >= RNDIS_MAX_CONFIGS) return;
      rndis_per_dev_params [configNr].used = 0;

      return;
}

int rndis_set_param_dev (u8 configNr, struct net_device *dev,
                   struct net_device_stats *stats,
                   u16 *cdc_filter)
{
      DBG("%s:\n", __FUNCTION__ );
      if (!dev || !stats) return -1;
      if (configNr >= RNDIS_MAX_CONFIGS) return -1;

      rndis_per_dev_params [configNr].dev = dev;
      rndis_per_dev_params [configNr].stats = stats;
      rndis_per_dev_params [configNr].filter = cdc_filter;

      return 0;
}

int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
{
      DBG("%s:\n", __FUNCTION__ );
      if (!vendorDescr) return -1;
      if (configNr >= RNDIS_MAX_CONFIGS) return -1;

      rndis_per_dev_params [configNr].vendorID = vendorID;
      rndis_per_dev_params [configNr].vendorDescr = vendorDescr;

      return 0;
}

int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
{
      DBG("%s: %u %u\n", __FUNCTION__, medium, speed);
      if (configNr >= RNDIS_MAX_CONFIGS) return -1;

      rndis_per_dev_params [configNr].medium = medium;
      rndis_per_dev_params [configNr].speed = speed;

      return 0;
}

void rndis_add_hdr (struct sk_buff *skb)
{
      struct rndis_packet_msg_type  *header;

      if (!skb)
            return;
      header = (void *) skb_push (skb, sizeof *header);
      memset (header, 0, sizeof *header);
      header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
      header->MessageLength = cpu_to_le32(skb->len);
      header->DataOffset = __constant_cpu_to_le32 (36);
      header->DataLength = cpu_to_le32(skb->len - sizeof *header);
}

void rndis_free_response (int configNr, u8 *buf)
{
      rndis_resp_t            *r;
      struct list_head  *act, *tmp;

      list_for_each_safe (act, tmp,
                  &(rndis_per_dev_params [configNr].resp_queue))
      {
            r = list_entry (act, rndis_resp_t, list);
            if (r && r->buf == buf) {
                  list_del (&r->list);
                  kfree (r);
            }
      }
}

u8 *rndis_get_next_response (int configNr, u32 *length)
{
      rndis_resp_t            *r;
      struct list_head  *act, *tmp;

      if (!length) return NULL;

      list_for_each_safe (act, tmp,
                  &(rndis_per_dev_params [configNr].resp_queue))
      {
            r = list_entry (act, rndis_resp_t, list);
            if (!r->send) {
                  r->send = 1;
                  *length = r->length;
                  return r->buf;
            }
      }

      return NULL;
}

static rndis_resp_t *rndis_add_response (int configNr, u32 length)
{
      rndis_resp_t      *r;

      /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
      r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
      if (!r) return NULL;

      r->buf = (u8 *) (r + 1);
      r->length = length;
      r->send = 0;

      list_add_tail (&r->list,
            &(rndis_per_dev_params [configNr].resp_queue));
      return r;
}

int rndis_rm_hdr(struct sk_buff *skb)
{
      /* tmp points to a struct rndis_packet_msg_type */
      __le32            *tmp = (void *) skb->data;

      /* MessageType, MessageLength */
      if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
                  != get_unaligned(tmp++))
            return -EINVAL;
      tmp++;

      /* DataOffset, DataLength */
      if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
                  + 8 /* offset of DataOffset */))
            return -EOVERFLOW;
      skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));

      return 0;
}

#ifdef      CONFIG_USB_GADGET_DEBUG_FILES

static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
            void *data)
{
      char *out = page;
      int len;
      rndis_params *param = (rndis_params *) data;

      out += snprintf (out, count,
                   "Config Nr. %d\n"
                   "used      : %s\n"
                   "state     : %s\n"
                   "medium    : 0x%08X\n"
                   "speed     : %d\n"
                   "cable     : %s\n"
                   "vendor ID : 0x%08X\n"
                   "vendor    : %s\n",
                   param->confignr, (param->used) ? "y" : "n",
                   ({ char *s = "?";
                   switch (param->state) {
                   case RNDIS_UNINITIALIZED:
                        s = "RNDIS_UNINITIALIZED"; break;
                   case RNDIS_INITIALIZED:
                        s = "RNDIS_INITIALIZED"; break;
                   case RNDIS_DATA_INITIALIZED:
                        s = "RNDIS_DATA_INITIALIZED"; break;
                  }; s; }),
                   param->medium,
                   (param->media_state) ? 0 : param->speed*100,
                   (param->media_state) ? "disconnected" : "connected",
                   param->vendorID, param->vendorDescr);

      len = out - page;
      len -= off;

      if (len < count) {
            *eof = 1;
            if (len <= 0)
                  return 0;
      } else
            len = count;

      *start = page + off;
      return len;
}

static int rndis_proc_write (struct file *file, const char __user *buffer,
            unsigned long count, void *data)
{
      rndis_params *p = data;
      u32 speed = 0;
      int i, fl_speed = 0;

      for (i = 0; i < count; i++) {
            char c;
            if (get_user(c, buffer))
                  return -EFAULT;
            switch (c) {
            case '0':
            case '1':
            case '2':
            case '3':
            case '4':
            case '5':
            case '6':
            case '7':
            case '8':
            case '9':
                  fl_speed = 1;
                  speed = speed*10 + c - '0';
                  break;
            case 'C':
            case 'c':
                  rndis_signal_connect (p->confignr);
                  break;
            case 'D':
            case 'd':
                  rndis_signal_disconnect(p->confignr);
                  break;
            default:
                  if (fl_speed) p->speed = speed;
                  else DBG("%c is not valid\n", c);
                  break;
            }

            buffer++;
      }

      return count;
}

#define     NAME_TEMPLATE     "driver/rndis-%03d"

static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];

#endif      /* CONFIG_USB_GADGET_DEBUG_FILES */


int __devinit rndis_init (void)
{
      u8 i;

      for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
#ifdef      CONFIG_USB_GADGET_DEBUG_FILES
            char name [20];

            sprintf (name, NAME_TEMPLATE, i);
            if (!(rndis_connect_state [i]
                        = create_proc_entry (name, 0660, NULL)))
            {
                  DBG("%s :remove entries", __FUNCTION__);
                  while (i) {
                        sprintf (name, NAME_TEMPLATE, --i);
                        remove_proc_entry (name, NULL);
                  }
                  DBG("\n");
                  return -EIO;
            }

            rndis_connect_state [i]->write_proc = rndis_proc_write;
            rndis_connect_state [i]->read_proc = rndis_proc_read;
            rndis_connect_state [i]->data = (void *)
                        (rndis_per_dev_params + i);
#endif
            rndis_per_dev_params [i].confignr = i;
            rndis_per_dev_params [i].used = 0;
            rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
            rndis_per_dev_params [i].media_state
                        = NDIS_MEDIA_STATE_DISCONNECTED;
            INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
      }

      return 0;
}

void rndis_exit (void)
{
#ifdef      CONFIG_USB_GADGET_DEBUG_FILES
      u8 i;
      char name [20];

      for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
            sprintf (name, NAME_TEMPLATE, i);
            remove_proc_entry (name, NULL);
      }
#endif
}


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