drivers/net/wan/lmc/lmc_proto.c

   1  /*
   2   * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
   3   * All rights reserved.  www.lanmedia.com
   4   *
   5   * This code is written by:
   6   * Andrew Stanley-Jones (asj@cban.com)
   7   * Rob Braun (bbraun@vix.com),
   8   * Michael Graff (explorer@vix.com) and
   9   * Matt Thomas (matt@3am-software.com).
  10   *
  11   * With Help By:
  12   * David Boggs
  13   * Ron Crane
  14   * Allan Cox
  15   *
  16   * This software may be used and distributed according to the terms
  17   * of the GNU General Public License version 2, incorporated herein by reference.
  18   *
  19   * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards.
  20   */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/string.h>
  24 #include <linux/timer.h>
  25 #include <linux/ptrace.h>
  26 #include <linux/errno.h>
  27 #include <linux/ioport.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/in.h>
  30 #include <linux/if_arp.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/inet.h>
  35 #include <linux/workqueue.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/bitops.h>
  38 #include <asm/processor.h>             /* Processor type for cache alignment. */
  39 #include <asm/io.h>
  40 #include <asm/dma.h>
  41 #include <linux/smp.h>
  42
  43 #include "lmc.h"
  44 #include "lmc_var.h"
  45 #include "lmc_debug.h"
  46 #include "lmc_ioctl.h"
  47 #include "lmc_proto.h"
  48
  49 // attach
  50 void lmc_proto_attach(lmc_softc_t *sc) /*FOLD00*/
  51 {
  52     lmc_trace(sc->lmc_device, "lmc_proto_attach in");
  53     if (sc->if_type == LMC_NET) {
  54             struct net_device *dev = sc->lmc_device;
  55             /*
  56              * They set a few basics because they don't use HDLC
  57              */
  58             dev->flags |= IFF_POINTOPOINT;
  59             dev->hard_header_len = 0;
  60             dev->addr_len = 0;
  61         }
  62     lmc_trace(sc->lmc_device, "lmc_proto_attach out");
  63 }
  64
  65 int lmc_proto_ioctl(lmc_softc_t *sc, struct ifreq *ifr, int cmd)
  66 {
  67         lmc_trace(sc->lmc_device, "lmc_proto_ioctl");
  68         if (sc->if_type == LMC_PPP)
  69                 return hdlc_ioctl(sc->lmc_device, ifr, cmd);
  70         return -EOPNOTSUPP;
  71 }
  72
  73 int lmc_proto_open(lmc_softc_t *sc)
  74 {
  75         int ret = 0;
  76
  77         lmc_trace(sc->lmc_device, "lmc_proto_open in");
  78
  79         if (sc->if_type == LMC_PPP) {
  80                 ret = hdlc_open(sc->lmc_device);
  81                 if (ret < 0)
  82                         printk(KERN_WARNING "%s: HDLC open failed: %d\n",
  83                                sc->name, ret);
  84         }
  85
  86         lmc_trace(sc->lmc_device, "lmc_proto_open out");
  87         return ret;
  88 }
  89
  90 void lmc_proto_close(lmc_softc_t *sc)
  91 {
  92         lmc_trace(sc->lmc_device, "lmc_proto_close in");
  93
  94         if (sc->if_type == LMC_PPP)
  95                 hdlc_close(sc->lmc_device);
  96
  97         lmc_trace(sc->lmc_device, "lmc_proto_close out");
  98 }
  99
 100 __be16 lmc_proto_type(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
 101 {
 102     lmc_trace(sc->lmc_device, "lmc_proto_type in");
 103     switch(sc->if_type){
 104     case LMC_PPP:
 105             return hdlc_type_trans(skb, sc->lmc_device);
 106             break;
 107     case LMC_NET:
 108         return htons(ETH_P_802_2);
 109         break;
 110     case LMC_RAW: /* Packet type for skbuff kind of useless */
 111         return htons(ETH_P_802_2);
 112         break;
 113     default:
 114         printk(KERN_WARNING "%s: No protocol set for this interface, assuming 802.2 (which is wrong!!)\n", sc->name);
 115         return htons(ETH_P_802_2);
 116         break;
 117     }
 118     lmc_trace(sc->lmc_device, "lmc_proto_tye out");
 119
 120 }
 121
 122 void lmc_proto_netif(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
 123 {
 124     lmc_trace(sc->lmc_device, "lmc_proto_netif in");
 125     switch(sc->if_type){
 126     case LMC_PPP:
 127     case LMC_NET:
 128     default:
 129         netif_rx(skb);
 130         break;
 131     case LMC_RAW:
 132         break;
 133     }
 134     lmc_trace(sc->lmc_device, "lmc_proto_netif out");
 135 }