drivers/staging/otus/wrap_pkt.c

   1 /*
   2  * Copyright (c) 2007-2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 /*                                                                      */
  17 /*  Module Name : wrap_pkt.c                                            */
  18 /*                                                                      */
  19 /*  Abstract                                                            */
  20 /*     This module contains wrapper functions for packet handling       */
  21 /*                                                                      */
  22 /*  NOTES                                                               */
  23 /*     Platform dependent.                                              */
  24 /*                                                                      */
  25 /************************************************************************/
  26
  27 #include "oal_dt.h"
  28 #include "usbdrv.h"
  29
  30 #include <linux/netlink.h>
  31 #include <linux/gfp.h>
  32 #include <net/iw_handler.h>
  33
  34
  35 /* extern struct zsWdsStruct wds[ZM_WDS_PORT_NUMBER];   */
  36 extern struct zsVapStruct vap[ZM_VAP_PORT_NUMBER];
  37
  38
  39 /***** Rx *****/
  40 void zfLnxRecv80211(zdev_t *dev, zbuf_t *buf, struct zsAdditionInfo *addInfo)
  41 {
  42         u16_t frameType;
  43         u16_t frameCtrl;
  44         u16_t frameSubtype;
  45         zbuf_t *skb1;
  46         struct usbdrv_private *macp = dev->ml_priv;
  47
  48         /* frameCtrl = zmw_buf_readb(dev, buf, 0);      */
  49         frameCtrl = *(u8_t *)((u8_t *)buf->data);
  50         frameType = frameCtrl & 0xf;
  51         frameSubtype = frameCtrl & 0xf0;
  52
  53         if ((frameType == 0x0) && (macp->forwardMgmt)) {
  54                 switch (frameSubtype) {
  55                         /* Beacon */
  56                 case 0x80:
  57                         /* Probe response */
  58                 case 0x50:
  59                         skb1 = skb_copy(buf, GFP_ATOMIC);
  60                         if (skb1 != NULL) {
  61                                 skb1->dev = dev;
  62                                 skb_reset_mac_header(skb1);
  63                                 skb1->ip_summed = CHECKSUM_NONE;
  64                                 skb1->pkt_type = PACKET_OTHERHOST;
  65                                 /* ETH_P_80211_RAW */
  66                                 skb1->protocol = __constant_htons(0x0019);
  67                                 netif_rx(skb1);
  68                         }
  69                         break;
  70                 default:
  71                         break;
  72                 }
  73         }
  74
  75         zfiRecv80211(dev, buf, addInfo);
  76         return;
  77 }
  78
  79 #define ZM_AVOID_UDP_LARGE_PACKET_FAIL
  80 void zfLnxRecvEth(zdev_t *dev, zbuf_t *buf, u16_t port)
  81 {
  82         struct usbdrv_private *macp = dev->ml_priv;
  83 #ifdef ZM_AVOID_UDP_LARGE_PACKET_FAIL
  84         zbuf_t *new_buf;
  85
  86         /* new_buf = dev_alloc_skb(2048);       */
  87         new_buf = dev_alloc_skb(buf->len);
  88
  89         skb_reset_tail_pointer(new_buf);
  90
  91         skb_put(new_buf, buf->len);
  92         memcpy(new_buf->data, buf->data, buf->len);
  93
  94         /* Free buffer */
  95         dev_kfree_skb_any(buf);
  96
  97         if (port == 0) {
  98                 new_buf->dev = dev;
  99                 new_buf->protocol = eth_type_trans(new_buf, dev);
 100         } else {
 101                 /* VAP */
 102                 if (vap[0].dev != NULL) {
 103                         new_buf->dev = vap[0].dev;
 104                         new_buf->protocol = eth_type_trans(new_buf, vap[0].dev);
 105                 } else {
 106                         new_buf->dev = dev;
 107                         new_buf->protocol = eth_type_trans(new_buf, dev);
 108                 }
 109         }
 110
 111         new_buf->ip_summed = CHECKSUM_NONE;
 112         dev->last_rx = jiffies;
 113
 114         switch (netif_rx(new_buf))
 115 #else
 116         if (port == 0) {
 117                 buf->dev = dev;
 118                 buf->protocol = eth_type_trans(buf, dev);
 119         } else {
 120                 /* VAP */
 121                 if (vap[0].dev != NULL) {
 122                         buf->dev = vap[0].dev;
 123                         buf->protocol = eth_type_trans(buf, vap[0].dev);
 124                 } else {
 125                         buf->dev = dev;
 126                         buf->protocol = eth_type_trans(buf, dev);
 127                 }
 128         }
 129
 130         buf->ip_summed = CHECKSUM_NONE;
 131         dev->last_rx = jiffies;
 132
 133         switch (netif_rx(buf))
 134 #endif
 135         {
 136         case NET_RX_DROP:
 137                 break;
 138         default:
 139                         macp->drv_stats.net_stats.rx_packets++;
 140                         macp->drv_stats.net_stats.rx_bytes += buf->len;
 141                 break;
 142         }
 143
 144         return;
 145 }
 146
 147 /* Leave an empty line below to remove warning message on some compiler */