openwrt/package/openwrt/wlcompat.c

   1 // insert header here
   2 // mbm. gpl.
   3
   4 #include <linux/config.h>
   5 #include <linux/module.h>
   6 #include <linux/init.h>
   7 #include <linux/if_arp.h>
   8 #include <asm/uaccess.h>
   9 #include <linux/wireless.h>
  10
  11 #include <net/iw_handler.h>
  12 #include <wlioctl.h>
  13
  14 #define DEBUG
  15
  16 static struct net_device *dev;
  17
  18 /* The frequency of each channel in MHz */
  19 const long channel_frequency[] = {
  20         2412, 2417, 2422, 2427, 2432, 2437, 2442,
  21         2447, 2452, 2457, 2462, 2467, 2472, 2484
  22 };
  23 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
  24
  25 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
  26 {
  27         mm_segment_t old_fs = get_fs();
  28         struct ifreq ifr;
  29         int ret;
  30         wl_ioctl_t ioc;
  31         ioc.cmd = cmd;
  32         ioc.buf = buf;
  33         ioc.len = len;
  34         strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
  35         ifr.ifr_data = (caddr_t) &ioc;
  36         set_fs(KERNEL_DS);
  37         ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
  38         set_fs (old_fs);
  39         return ret;
  40 }
  41
  42 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
  43                                     char *extra)
  44 {
  45         int i, k;
  46         struct iw_range *range;
  47
  48         range = (struct iw_range *) extra;
  49
  50         range->we_version_compiled = WIRELESS_EXT;
  51         range->we_version_source = WIRELESS_EXT;
  52
  53         range->min_nwid = range->max_nwid = 0;
  54
  55         range->num_channels = NUM_CHANNELS;
  56         k = 0;
  57         for (i = 0; i < NUM_CHANNELS; i++) {
  58                 range->freq[k].i = i + 1;
  59                 range->freq[k].m = channel_frequency[i] * 100000;
  60                 range->freq[k].e = 1;
  61                 k++;
  62                 if (k >= IW_MAX_FREQUENCIES)
  63                         break;
  64         }
  65         range->num_frequency = k;
  66         range->sensitivity = 3;
  67
  68         /* nbd: don't know what this means, but other drivers set it this way */
  69         range->pmp_flags = IW_POWER_PERIOD;
  70         range->pmt_flags = IW_POWER_TIMEOUT;
  71         range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
  72
  73         range->min_rts = 0;
  74         if (wl_ioctl(dev, WLC_GET_RTS, &range->max_rts, sizeof(int)) < 0)
  75                 range->max_rts = 2347;
  76
  77         range->min_frag = 256;
  78
  79         if (wl_ioctl(dev, WLC_GET_FRAG, &range->max_frag, sizeof(int)) < 0)
  80                 range->max_frag = 2346;
  81
  82         range->min_pmp = 0;
  83         range->max_pmp = 65535000;
  84         range->min_pmt = 0;
  85         range->max_pmt = 65535 * 1000;
  86
  87         range->txpower_capa = IW_TXPOW_MWATT;
  88
  89         return 0;
  90 }
  91
  92 static int wlcompat_ioctl(struct net_device *dev,
  93                          struct iw_request_info *info,
  94                          union iwreq_data *wrqu,
  95                          char *extra)
  96 {
  97         switch (info->cmd) {
  98                 case SIOCGIWNAME:
  99                         strcpy(wrqu->name, "IEEE 802.11-DS");
 100                         break;
 101                 case SIOCGIWFREQ:
 102                 {
 103                         channel_info_t ci;
 104
 105                         if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
 106                                 return -EINVAL;
 107
 108                         wrqu->freq.m = ci.target_channel;
 109                         wrqu->freq.e = 0;
 110                         break;
 111                 }
 112                 case SIOCSIWFREQ:
 113                 {
 114                         if (wrqu->freq.e == 1) {
 115                                 int channel = 0;
 116                                 int f = wrqu->freq.m / 100000;
 117                                 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
 118                                         channel++;
 119
 120                                 if (channel == NUM_CHANNELS) // channel not found
 121                                         return -EINVAL;
 122
 123                                 wrqu->freq.e = 0;
 124                                 wrqu->freq.m = channel + 1;
 125                         }
 126                         if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
 127                                 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
 128                                         return -EINVAL;
 129                         } else {
 130                                 return -EINVAL;
 131                         }
 132                 }
 133                 case SIOCGIWAP:
 134                 {
 135                         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 136                         if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
 137                                 return -EINVAL;
 138                         break;
 139                 }
 140                 case SIOCGIWESSID:
 141                 {
 142                         wlc_ssid_t ssid;
 143
 144                         if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
 145                                 return -EINVAL;
 146
 147                         wrqu->essid.flags = wrqu->data.flags = 1;
 148                         wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
 149                         memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
 150                         break;
 151                 }
 152                 case SIOCSIWESSID:
 153                 {
 154                         wlc_ssid_t ssid;
 155                         memset(&ssid, 0, sizeof(ssid));
 156                         ssid.SSID_len = strlen(extra);
 157                         if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
 158                                 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
 159                         memcpy(ssid.SSID, extra, ssid.SSID_len);
 160                         if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
 161                                 return -EINVAL;
 162                         break;
 163                 }
 164                 case SIOCGIWRTS:
 165                 {
 166                         if (wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
 167                                 return -EINVAL;
 168                         break;
 169                 }
 170                 case SIOCGIWFRAG:
 171                 {
 172                         if (wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
 173                                 return -EINVAL;
 174                         break;
 175                 }
 176                 case SIOCGIWTXPOW:
 177                 {
 178                         wrqu->txpower.value = 0;
 179                         if (wl_ioctl(dev,WLC_GET_TXPWR, &(wrqu->txpower.value), sizeof(int)) < 0)
 180                                 return -EINVAL;
 181                         wrqu->txpower.fixed = 0;
 182                         wrqu->txpower.disabled = 0;
 183                         wrqu->txpower.flags = IW_TXPOW_MWATT;
 184                         break;
 185                 }
 186                 case SIOCSIWTXPOW:
 187                 {
 188                         if (wrqu->txpower.flags != IW_TXPOW_MWATT)
 189                                 return -EINVAL;
 190
 191                         if (wl_ioctl(dev, WLC_SET_TXPWR, &wrqu->txpower.value, sizeof(int)) < 0)
 192                                 return -EINVAL;
 193                 }
 194                 case SIOCGIWENCODE:
 195                 {
 196                         wrqu->data.flags = IW_ENCODE_DISABLED;
 197                         break;
 198                 }
 199                 case SIOCGIWRANGE:
 200                 {
 201                         return wlcompat_ioctl_getiwrange(dev, extra);
 202                         break;
 203                 }
 204                 default:
 205                 {
 206                         return -EINVAL;
 207                 }
 208         }
 209
 210         return 0;
 211 }
 212
 213 static const iw_handler  wlcompat_handler[] = {
 214         NULL,                   /* SIOCSIWCOMMIT */
 215         wlcompat_ioctl,         /* SIOCGIWNAME */
 216         NULL,                   /* SIOCSIWNWID */
 217         NULL,                   /* SIOCGIWNWID */
 218         wlcompat_ioctl,         /* SIOCSIWFREQ */
 219         wlcompat_ioctl,         /* SIOCGIWFREQ */
 220         NULL,                   /* SIOCSIWMODE */
 221         NULL,                   /* SIOCGIWMODE */
 222         NULL,                   /* SIOCSIWSENS */
 223         NULL,                   /* SIOCGIWSENS */
 224         NULL,                   /* SIOCSIWRANGE */
 225         wlcompat_ioctl,         /* SIOCGIWRANGE */
 226         NULL,                   /* SIOCSIWPRIV */
 227         NULL,                   /* SIOCGIWPRIV */
 228         NULL,                   /* SIOCSIWSTATS */
 229         NULL,                   /* SIOCGIWSTATS */
 230         iw_handler_set_spy,     /* SIOCSIWSPY */
 231         iw_handler_get_spy,     /* SIOCGIWSPY */
 232         iw_handler_set_thrspy,  /* SIOCSIWTHRSPY */
 233         iw_handler_get_thrspy,  /* SIOCGIWTHRSPY */
 234         NULL,                   /* SIOCSIWAP */
 235         wlcompat_ioctl,         /* SIOCGIWAP */
 236         NULL,                   /* -- hole -- */
 237         NULL,                   /* SIOCGIWAPLIST */
 238         NULL,                   /* -- hole -- */
 239         NULL,                   /* -- hole -- */
 240         wlcompat_ioctl,         /* SIOCSIWESSID */
 241         wlcompat_ioctl,         /* SIOCGIWESSID */
 242         NULL,                   /* SIOCSIWNICKN */
 243         NULL,                   /* SIOCGIWNICKN */
 244         NULL,                   /* -- hole -- */
 245         NULL,                   /* -- hole -- */
 246         NULL,                   /* SIOCSIWRATE */
 247         NULL,                   /* SIOCGIWRATE */
 248         NULL,                   /* SIOCSIWRTS */
 249         wlcompat_ioctl,         /* SIOCGIWRTS */
 250         NULL,                   /* SIOCSIWFRAG */
 251         wlcompat_ioctl,         /* SIOCGIWFRAG */
 252         wlcompat_ioctl,         /* SIOCSIWTXPOW */
 253         wlcompat_ioctl,         /* SIOCGIWTXPOW */
 254         NULL,                   /* SIOCSIWRETRY */
 255         NULL,                   /* SIOCGIWRETRY */
 256         NULL,                   /* SIOCSIWENCODE */
 257         wlcompat_ioctl,         /* SIOCGIWENCODE */
 258 };
 259
 260 static const struct iw_handler_def      wlcompat_handler_def =
 261 {
 262         .standard       = (iw_handler *) wlcompat_handler,
 263         .num_standard   = sizeof(wlcompat_handler)/sizeof(iw_handler),
 264         .private        = NULL,
 265         .num_private    = 0,
 266         .private_args   = NULL,
 267         .num_private_args = 0,
 268 };
 269
 270 #ifdef DEBUG
 271 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
 272 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
 273         int ret = old_ioctl(dev,ifr,cmd);
 274         printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
 275         if (cmd==SIOCDEVPRIVATE) {
 276                 int x;
 277                 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
 278                 unsigned char *buf = ioc->buf;
 279                 printk("   cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
 280                 printk("   ->");
 281                 for (x=0;x<ioc->len && x<128 ;x++) {
 282                         printk("%02X",buf[x]);
 283                 }
 284                 printk("\n");
 285         }
 286         return ret;
 287 }
 288 #endif
 289
 290 static int __init wlcompat_init()
 291 {
 292         dev = dev_get_by_name("eth1");
 293 #ifdef DEBUG
 294         old_ioctl = dev->do_ioctl;
 295         dev->do_ioctl = new_ioctl;
 296 #endif
 297         dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
 298         return 0;
 299 }
 300
 301 static void __exit wlcompat_exit()
 302 {
 303         dev->wireless_handlers = NULL;
 304 #ifdef DEBUG
 305         dev->do_ioctl = old_ioctl;
 306 #endif
 307         return;
 308 }
 309
 310 EXPORT_NO_SYMBOLS;
 311 MODULE_AUTHOR("openwrt.org");
 312 MODULE_LICENSE("GPL");
 313
 314 module_init(wlcompat_init);
 315 module_exit(wlcompat_exit);