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         range->max_rts = 2347;
  75         range->min_frag = 256;
  76         range->max_frag = 2346;
  77
  78         range->min_pmp = 0;
  79         range->max_pmp = 65535000;
  80         range->min_pmt = 0;
  81         range->max_pmt = 65535 * 1000;
  82
  83         range->txpower_capa = IW_TXPOW_MWATT;
  84
  85         return 0;
  86 }
  87
  88 static int wlcompat_ioctl(struct net_device *dev,
  89                          struct iw_request_info *info,
  90                          union iwreq_data *wrqu,
  91                          char *extra)
  92 {
  93         int err = 0;
  94
  95         switch (info->cmd) {
  96                 case SIOCGIWNAME:
  97                         strcpy(wrqu->name, "IEEE 802.11-DS");
  98                         break;
  99                 case SIOCGIWFREQ:
 100                 {
 101                         channel_info_t ci;
 102                         wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci));
 103                         wrqu->freq.m = ci.target_channel;
 104                         wrqu->freq.e = 0;
 105                         break;
 106                 }
 107                 case SIOCSIWFREQ:
 108                 {
 109                         if (wrqu->freq.e == 1) {
 110                                 int channel = 0;
 111                                 int f = wrqu->freq.m / 100000;
 112                                 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
 113                                         channel++;
 114
 115                                 if (channel == NUM_CHANNELS) { // channel not found
 116                                         err = -EINVAL;
 117                                 } else {
 118                                         wrqu->freq.e = 0;
 119                                         wrqu->freq.m = channel + 1;
 120                                 }
 121                         }
 122                         if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
 123                                 wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int));
 124                         } else {
 125                                 err = -EINVAL;
 126                         }
 127                 }
 128                 case SIOCGIWAP:
 129                 {
 130                         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 131                         wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6);
 132                         break;
 133                 }
 134                 case SIOCGIWESSID:
 135                 {
 136                         wlc_ssid_t ssid;
 137                         wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t));
 138                         wrqu->essid.flags = wrqu->data.flags = 1;
 139                         wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
 140                         memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
 141                         break;
 142                 }
 143                 case SIOCSIWESSID:
 144                 {
 145                         wlc_ssid_t ssid;
 146                         memset(&ssid, 0, sizeof(ssid));
 147                         ssid.SSID_len = strlen(extra);
 148                         if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
 149                                 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
 150                         memcpy(ssid.SSID, extra, ssid.SSID_len);
 151                         wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid));
 152                         break;
 153                 }
 154                 case SIOCGIWRTS:
 155                 {
 156                         wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int));
 157                         break;
 158                 }
 159                 case SIOCGIWFRAG:
 160                 {
 161                         wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int));
 162                         break;
 163                 }
 164                 case SIOCGIWTXPOW:
 165                 {
 166                         wrqu->txpower.value = 0;
 167                         wl_ioctl(dev,WLC_GET_TXPWR, &(wrqu->txpower.value), sizeof(int));
 168                         wrqu->txpower.fixed = 0;
 169                         wrqu->txpower.disabled = 0;
 170                         wrqu->txpower.flags = IW_TXPOW_MWATT;
 171                         break;
 172                 }
 173                 case SIOCGIWENCODE:
 174                 {
 175                         wrqu->data.flags = IW_ENCODE_DISABLED;
 176                         break;
 177                 }
 178                 case SIOCGIWRANGE:
 179                 {
 180                         err = wlcompat_ioctl_getiwrange(dev, extra);
 181                         break;
 182                 }
 183                 default:
 184                 {
 185                         err = -EINVAL;
 186                         break;
 187                 }
 188         }
 189
 190         return err;
 191 }
 192
 193 static const iw_handler  wlcompat_handler[] = {
 194         NULL,                   /* SIOCSIWCOMMIT */
 195         wlcompat_ioctl,         /* SIOCGIWNAME */
 196         NULL,                   /* SIOCSIWNWID */
 197         NULL,                   /* SIOCGIWNWID */
 198         wlcompat_ioctl,         /* SIOCSIWFREQ */
 199         wlcompat_ioctl,         /* SIOCGIWFREQ */
 200         NULL,                   /* SIOCSIWMODE */
 201         NULL,                   /* SIOCGIWMODE */
 202         NULL,                   /* SIOCSIWSENS */
 203         NULL,                   /* SIOCGIWSENS */
 204         NULL,                   /* SIOCSIWRANGE */
 205         wlcompat_ioctl,         /* SIOCGIWRANGE */
 206         NULL,                   /* SIOCSIWPRIV */
 207         NULL,                   /* SIOCGIWPRIV */
 208         NULL,                   /* SIOCSIWSTATS */
 209         NULL,                   /* SIOCGIWSTATS */
 210         iw_handler_set_spy,     /* SIOCSIWSPY */
 211         iw_handler_get_spy,     /* SIOCGIWSPY */
 212         iw_handler_set_thrspy,  /* SIOCSIWTHRSPY */
 213         iw_handler_get_thrspy,  /* SIOCGIWTHRSPY */
 214         NULL,                   /* SIOCSIWAP */
 215         wlcompat_ioctl,         /* SIOCGIWAP */
 216         NULL,                   /* -- hole -- */
 217         NULL,                   /* SIOCGIWAPLIST */
 218         NULL,                   /* -- hole -- */
 219         NULL,                   /* -- hole -- */
 220         wlcompat_ioctl,         /* SIOCSIWESSID */
 221         wlcompat_ioctl,         /* SIOCGIWESSID */
 222         NULL,                   /* SIOCSIWNICKN */
 223         NULL,                   /* SIOCGIWNICKN */
 224         NULL,                   /* -- hole -- */
 225         NULL,                   /* -- hole -- */
 226         NULL,                   /* SIOCSIWRATE */
 227         NULL,                   /* SIOCGIWRATE */
 228         NULL,                   /* SIOCSIWRTS */
 229         wlcompat_ioctl,         /* SIOCGIWRTS */
 230         NULL,                   /* SIOCSIWFRAG */
 231         wlcompat_ioctl,         /* SIOCGIWFRAG */
 232         NULL,                   /* SIOCSIWTXPOW */
 233         wlcompat_ioctl,         /* SIOCGIWTXPOW */
 234         NULL,                   /* SIOCSIWRETRY */
 235         NULL,                   /* SIOCGIWRETRY */
 236         NULL,                   /* SIOCSIWENCODE */
 237         wlcompat_ioctl,         /* SIOCGIWENCODE */
 238 };
 239
 240 static const struct iw_handler_def      wlcompat_handler_def =
 241 {
 242         .standard       = (iw_handler *) wlcompat_handler,
 243         .num_standard   = sizeof(wlcompat_handler)/sizeof(iw_handler),
 244         .private        = NULL,
 245         .num_private    = 0,
 246         .private_args   = NULL,
 247         .num_private_args = 0,
 248 };
 249
 250 #ifdef DEBUG
 251 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
 252 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
 253         int ret = old_ioctl(dev,ifr,cmd);
 254         printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
 255         if (cmd==SIOCDEVPRIVATE) {
 256                 int x;
 257                 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
 258                 unsigned char *buf = ioc->buf;
 259                 printk("   cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
 260                 printk("   ->");
 261                 for (x=0;x<ioc->len && x<128 ;x++) {
 262                         printk("%02X",buf[x]);
 263                 }
 264                 printk("\n");
 265         }
 266         return ret;
 267 }
 268 #endif
 269
 270 static int __init wlcompat_init()
 271 {
 272         dev = dev_get_by_name("eth1");
 273 #ifdef DEBUG
 274         old_ioctl = dev->do_ioctl;
 275         dev->do_ioctl = new_ioctl;
 276 #endif
 277         dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
 278         return 0;
 279 }
 280
 281 static void __exit wlcompat_exit()
 282 {
 283         dev->wireless_handlers = NULL;
 284 #ifdef DEBUG
 285         dev->do_ioctl = old_ioctl;
 286 #endif
 287         return;
 288 }
 289
 290 EXPORT_NO_SYMBOLS;
 291 MODULE_AUTHOR("openwrt.org");
 292 MODULE_LICENSE("GPL");
 293
 294 module_init(wlcompat_init);
 295 module_exit(wlcompat_exit);