drivers/net/wireless/intel/ipw2x00/libipw_rx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Original code based Host AP (software wireless LAN access point) driver
   4  * for Intersil Prism2/2.5/3 - hostap.o module, common routines
   5  *
   6  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   7  * <[email protected]>
   8  * Copyright (c) 2002-2003, Jouni Malinen <[email protected]>
   9  * Copyright (c) 2004-2005, Intel Corporation
  10  */
  11
  12 #include <linux/compiler.h>
  13 #include <linux/errno.h>
  14 #include <linux/if_arp.h>
  15 #include <linux/in6.h>
  16 #include <linux/gfp.h>
  17 #include <linux/in.h>
  18 #include <linux/ip.h>
  19 #include <linux/kernel.h>
  20 #include <linux/module.h>
  21 #include <linux/netdevice.h>
  22 #include <linux/proc_fs.h>
  23 #include <linux/skbuff.h>
  24 #include <linux/tcp.h>
  25 #include <linux/types.h>
  26 #include <linux/wireless.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/uaccess.h>
  29 #include <linux/ctype.h>
  30 #include "libipw.h"
  31
  32 static void libipw_monitor_rx(struct libipw_device *ieee,
  33                                         struct sk_buff *skb,
  34                                         struct libipw_rx_stats *rx_stats)
  35 {
  36         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
  37         u16 fc = le16_to_cpu(hdr->frame_control);
  38
  39         skb->dev = ieee->dev;
  40         skb_reset_mac_header(skb);
  41         skb_pull(skb, libipw_get_hdrlen(fc));
  42         skb->pkt_type = PACKET_OTHERHOST;
  43         skb->protocol = htons(ETH_P_80211_RAW);
  44         memset(skb->cb, 0, sizeof(skb->cb));
  45         netif_rx(skb);
  46 }
  47
  48 /* Called only as a tasklet (software IRQ) */
  49 static struct libipw_frag_entry *libipw_frag_cache_find(struct
  50                                                               libipw_device
  51                                                               *ieee,
  52                                                               unsigned int seq,
  53                                                               unsigned int frag,
  54                                                               u8 * src,
  55                                                               u8 * dst)
  56 {
  57         struct libipw_frag_entry *entry;
  58         int i;
  59
  60         for (i = 0; i < LIBIPW_FRAG_CACHE_LEN; i++) {
  61                 entry = &ieee->frag_cache[i];
  62                 if (entry->skb != NULL &&
  63                     time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
  64                         LIBIPW_DEBUG_FRAG("expiring fragment cache entry "
  65                                              "seq=%u last_frag=%u\n",
  66                                              entry->seq, entry->last_frag);
  67                         dev_kfree_skb_any(entry->skb);
  68                         entry->skb = NULL;
  69                 }
  70
  71                 if (entry->skb != NULL && entry->seq == seq &&
  72                     (entry->last_frag + 1 == frag || frag == -1) &&
  73                     ether_addr_equal(entry->src_addr, src) &&
  74                     ether_addr_equal(entry->dst_addr, dst))
  75                         return entry;
  76         }
  77
  78         return NULL;
  79 }
  80
  81 /* Called only as a tasklet (software IRQ) */
  82 static struct sk_buff *libipw_frag_cache_get(struct libipw_device *ieee,
  83                                                 struct libipw_hdr_4addr *hdr)
  84 {
  85         struct sk_buff *skb = NULL;
  86         u16 sc;
  87         unsigned int frag, seq;
  88         struct libipw_frag_entry *entry;
  89
  90         sc = le16_to_cpu(hdr->seq_ctl);
  91         frag = WLAN_GET_SEQ_FRAG(sc);
  92         seq = WLAN_GET_SEQ_SEQ(sc);
  93
  94         if (frag == 0) {
  95                 /* Reserve enough space to fit maximum frame length */
  96                 skb = dev_alloc_skb(ieee->dev->mtu +
  97                                     sizeof(struct libipw_hdr_4addr) +
  98                                     8 /* LLC */  +
  99                                     2 /* alignment */  +
 100                                     8 /* WEP */  + ETH_ALEN /* WDS */ );
 101                 if (skb == NULL)
 102                         return NULL;
 103
 104                 entry = &ieee->frag_cache[ieee->frag_next_idx];
 105                 ieee->frag_next_idx++;
 106                 if (ieee->frag_next_idx >= LIBIPW_FRAG_CACHE_LEN)
 107                         ieee->frag_next_idx = 0;
 108
 109                 if (entry->skb != NULL)
 110                         dev_kfree_skb_any(entry->skb);
 111
 112                 entry->first_frag_time = jiffies;
 113                 entry->seq = seq;
 114                 entry->last_frag = frag;
 115                 entry->skb = skb;
 116                 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
 117                 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
 118         } else {
 119                 /* received a fragment of a frame for which the head fragment
 120                  * should have already been received */
 121                 entry = libipw_frag_cache_find(ieee, seq, frag, hdr->addr2,
 122                                                   hdr->addr1);
 123                 if (entry != NULL) {
 124                         entry->last_frag = frag;
 125                         skb = entry->skb;
 126                 }
 127         }
 128
 129         return skb;
 130 }
 131
 132 /* Called only as a tasklet (software IRQ) */
 133 static int libipw_frag_cache_invalidate(struct libipw_device *ieee,
 134                                            struct libipw_hdr_4addr *hdr)
 135 {
 136         u16 sc;
 137         unsigned int seq;
 138         struct libipw_frag_entry *entry;
 139
 140         sc = le16_to_cpu(hdr->seq_ctl);
 141         seq = WLAN_GET_SEQ_SEQ(sc);
 142
 143         entry = libipw_frag_cache_find(ieee, seq, -1, hdr->addr2,
 144                                           hdr->addr1);
 145
 146         if (entry == NULL) {
 147                 LIBIPW_DEBUG_FRAG("could not invalidate fragment cache "
 148                                      "entry (seq=%u)\n", seq);
 149                 return -1;
 150         }
 151
 152         entry->skb = NULL;
 153         return 0;
 154 }
 155
 156 #ifdef NOT_YET
 157 /* libipw_rx_frame_mgtmt
 158  *
 159  * Responsible for handling management control frames
 160  *
 161  * Called by libipw_rx */
 162 static int
 163 libipw_rx_frame_mgmt(struct libipw_device *ieee, struct sk_buff *skb,
 164                         struct libipw_rx_stats *rx_stats, u16 type,
 165                         u16 stype)
 166 {
 167         if (ieee->iw_mode == IW_MODE_MASTER) {
 168                 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
 169                        ieee->dev->name);
 170                 return 0;
 171 /*
 172   hostap_update_sta_ps(ieee, (struct hostap_libipw_hdr_4addr *)
 173   skb->data);*/
 174         }
 175
 176         if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) {
 177                 if (stype == WLAN_FC_STYPE_BEACON &&
 178                     ieee->iw_mode == IW_MODE_MASTER) {
 179                         struct sk_buff *skb2;
 180                         /* Process beacon frames also in kernel driver to
 181                          * update STA(AP) table statistics */
 182                         skb2 = skb_clone(skb, GFP_ATOMIC);
 183                         if (skb2)
 184                                 hostap_rx(skb2->dev, skb2, rx_stats);
 185                 }
 186
 187                 /* send management frames to the user space daemon for
 188                  * processing */
 189                 ieee->apdevstats.rx_packets++;
 190                 ieee->apdevstats.rx_bytes += skb->len;
 191                 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
 192                 return 0;
 193         }
 194
 195         if (ieee->iw_mode == IW_MODE_MASTER) {
 196                 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
 197                         printk(KERN_DEBUG "%s: unknown management frame "
 198                                "(type=0x%02x, stype=0x%02x) dropped\n",
 199                                skb->dev->name, type, stype);
 200                         return -1;
 201                 }
 202
 203                 hostap_rx(skb->dev, skb, rx_stats);
 204                 return 0;
 205         }
 206
 207         printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
 208                "received in non-Host AP mode\n", skb->dev->name);
 209         return -1;
 210 }
 211 #endif
 212
 213 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
 214 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
 215 static unsigned char libipw_rfc1042_header[] =
 216     { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 217
 218 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
 219 static unsigned char libipw_bridge_tunnel_header[] =
 220     { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
 221 /* No encapsulation header if EtherType < 0x600 (=length) */
 222
 223 /* Called by libipw_rx_frame_decrypt */
 224 static int libipw_is_eapol_frame(struct libipw_device *ieee,
 225                                     struct sk_buff *skb)
 226 {
 227         struct net_device *dev = ieee->dev;
 228         u16 fc, ethertype;
 229         struct libipw_hdr_3addr *hdr;
 230         u8 *pos;
 231
 232         if (skb->len < 24)
 233                 return 0;
 234
 235         hdr = (struct libipw_hdr_3addr *)skb->data;
 236         fc = le16_to_cpu(hdr->frame_ctl);
 237
 238         /* check that the frame is unicast frame to us */
 239         if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
 240             IEEE80211_FCTL_TODS &&
 241             ether_addr_equal(hdr->addr1, dev->dev_addr) &&
 242             ether_addr_equal(hdr->addr3, dev->dev_addr)) {
 243                 /* ToDS frame with own addr BSSID and DA */
 244         } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
 245                    IEEE80211_FCTL_FROMDS &&
 246                    ether_addr_equal(hdr->addr1, dev->dev_addr)) {
 247                 /* FromDS frame with own addr as DA */
 248         } else
 249                 return 0;
 250
 251         if (skb->len < 24 + 8)
 252                 return 0;
 253
 254         /* check for port access entity Ethernet type */
 255         pos = skb->data + 24;
 256         ethertype = (pos[6] << 8) | pos[7];
 257         if (ethertype == ETH_P_PAE)
 258                 return 1;
 259
 260         return 0;
 261 }
 262
 263 /* Called only as a tasklet (software IRQ), by libipw_rx */
 264 static int
 265 libipw_rx_frame_decrypt(struct libipw_device *ieee, struct sk_buff *skb,
 266                            struct libipw_crypt_data *crypt)
 267 {
 268         struct libipw_hdr_3addr *hdr;
 269         int res, hdrlen;
 270
 271         if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
 272                 return 0;
 273
 274         hdr = (struct libipw_hdr_3addr *)skb->data;
 275         hdrlen = libipw_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
 276
 277         atomic_inc(&crypt->refcnt);
 278         res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
 279         atomic_dec(&crypt->refcnt);
 280         if (res < 0) {
 281                 LIBIPW_DEBUG_DROP("decryption failed (SA=%pM) res=%d\n",
 282                                      hdr->addr2, res);
 283                 if (res == -2)
 284                         LIBIPW_DEBUG_DROP("Decryption failed ICV "
 285                                              "mismatch (key %d)\n",
 286                                              skb->data[hdrlen + 3] >> 6);
 287                 ieee->ieee_stats.rx_discards_undecryptable++;
 288                 return -1;
 289         }
 290
 291         return res;
 292 }
 293
 294 /* Called only as a tasklet (software IRQ), by libipw_rx */
 295 static int
 296 libipw_rx_frame_decrypt_msdu(struct libipw_device *ieee,
 297                                 struct sk_buff *skb, int keyidx,
 298                                 struct libipw_crypt_data *crypt)
 299 {
 300         struct libipw_hdr_3addr *hdr;
 301         int res, hdrlen;
 302
 303         if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
 304                 return 0;
 305
 306         hdr = (struct libipw_hdr_3addr *)skb->data;
 307         hdrlen = libipw_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
 308
 309         atomic_inc(&crypt->refcnt);
 310         res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
 311         atomic_dec(&crypt->refcnt);
 312         if (res < 0) {
 313                 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
 314                        " (SA=%pM keyidx=%d)\n", ieee->dev->name, hdr->addr2,
 315                        keyidx);
 316                 return -1;
 317         }
 318
 319         return 0;
 320 }
 321
 322 /* All received frames are sent to this function. @skb contains the frame in
 323  * IEEE 802.11 format, i.e., in the format it was sent over air.
 324  * This function is called only as a tasklet (software IRQ). */
 325 int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb,
 326                  struct libipw_rx_stats *rx_stats)
 327 {
 328         struct net_device *dev = ieee->dev;
 329         struct libipw_hdr_4addr *hdr;
 330         size_t hdrlen;
 331         u16 fc, type, stype, sc;
 332         unsigned int frag;
 333         u8 *payload;
 334         u16 ethertype;
 335 #ifdef NOT_YET
 336         struct net_device *wds = NULL;
 337         struct sk_buff *skb2 = NULL;
 338         struct net_device *wds = NULL;
 339         int frame_authorized = 0;
 340         int from_assoc_ap = 0;
 341         void *sta = NULL;
 342 #endif
 343         u8 dst[ETH_ALEN];
 344         u8 src[ETH_ALEN];
 345         struct libipw_crypt_data *crypt = NULL;
 346         int keyidx = 0;
 347         int can_be_decrypted = 0;
 348
 349         hdr = (struct libipw_hdr_4addr *)skb->data;
 350         if (skb->len < 10) {
 351                 printk(KERN_INFO "%s: SKB length < 10\n", dev->name);
 352                 goto rx_dropped;
 353         }
 354
 355         fc = le16_to_cpu(hdr->frame_ctl);
 356         type = WLAN_FC_GET_TYPE(fc);
 357         stype = WLAN_FC_GET_STYPE(fc);
 358         sc = le16_to_cpu(hdr->seq_ctl);
 359         frag = WLAN_GET_SEQ_FRAG(sc);
 360         hdrlen = libipw_get_hdrlen(fc);
 361
 362         if (skb->len < hdrlen) {
 363                 printk(KERN_INFO "%s: invalid SKB length %d\n",
 364                         dev->name, skb->len);
 365                 goto rx_dropped;
 366         }
 367
 368         /* Put this code here so that we avoid duplicating it in all
 369          * Rx paths. - Jean II */
 370 #ifdef CONFIG_WIRELESS_EXT
 371 #ifdef IW_WIRELESS_SPY          /* defined in iw_handler.h */
 372         /* If spy monitoring on */
 373         if (ieee->spy_data.spy_number > 0) {
 374                 struct iw_quality wstats;
 375
 376                 wstats.updated = 0;
 377                 if (rx_stats->mask & LIBIPW_STATMASK_RSSI) {
 378                         wstats.level = rx_stats->signal;
 379                         wstats.updated |= IW_QUAL_LEVEL_UPDATED;
 380                 } else
 381                         wstats.updated |= IW_QUAL_LEVEL_INVALID;
 382
 383                 if (rx_stats->mask & LIBIPW_STATMASK_NOISE) {
 384                         wstats.noise = rx_stats->noise;
 385                         wstats.updated |= IW_QUAL_NOISE_UPDATED;
 386                 } else
 387                         wstats.updated |= IW_QUAL_NOISE_INVALID;
 388
 389                 if (rx_stats->mask & LIBIPW_STATMASK_SIGNAL) {
 390                         wstats.qual = rx_stats->signal;
 391                         wstats.updated |= IW_QUAL_QUAL_UPDATED;
 392                 } else
 393                         wstats.updated |= IW_QUAL_QUAL_INVALID;
 394
 395                 /* Update spy records */
 396                 libipw_spy_update(ieee->dev, hdr->addr2, &wstats);
 397         }
 398 #endif                          /* IW_WIRELESS_SPY */
 399 #endif                          /* CONFIG_WIRELESS_EXT */
 400
 401 #ifdef NOT_YET
 402         hostap_update_rx_stats(local->ap, hdr, rx_stats);
 403 #endif
 404
 405         if (ieee->iw_mode == IW_MODE_MONITOR) {
 406                 dev->stats.rx_packets++;
 407                 dev->stats.rx_bytes += skb->len;
 408                 libipw_monitor_rx(ieee, skb, rx_stats);
 409                 return 1;
 410         }
 411
 412         can_be_decrypted = (is_multicast_ether_addr(hdr->addr1) ||
 413                             is_broadcast_ether_addr(hdr->addr2)) ?
 414             ieee->host_mc_decrypt : ieee->host_decrypt;
 415
 416         if (can_be_decrypted) {
 417                 if (skb->len >= hdrlen + 3) {
 418                         /* Top two-bits of byte 3 are the key index */
 419                         keyidx = skb->data[hdrlen + 3] >> 6;
 420                 }
 421
 422                 /* ieee->crypt[] is WEP_KEY (4) in length.  Given that keyidx
 423                  * is only allowed 2-bits of storage, no value of keyidx can
 424                  * be provided via above code that would result in keyidx
 425                  * being out of range */
 426                 crypt = ieee->crypt_info.crypt[keyidx];
 427
 428 #ifdef NOT_YET
 429                 sta = NULL;
 430
 431                 /* Use station specific key to override default keys if the
 432                  * receiver address is a unicast address ("individual RA"). If
 433                  * bcrx_sta_key parameter is set, station specific key is used
 434                  * even with broad/multicast targets (this is against IEEE
 435                  * 802.11, but makes it easier to use different keys with
 436                  * stations that do not support WEP key mapping). */
 437
 438                 if (is_unicast_ether_addr(hdr->addr1) || local->bcrx_sta_key)
 439                         (void)hostap_handle_sta_crypto(local, hdr, &crypt,
 440                                                        &sta);
 441 #endif
 442
 443                 /* allow NULL decrypt to indicate an station specific override
 444                  * for default encryption */
 445                 if (crypt && (crypt->ops == NULL ||
 446                               crypt->ops->decrypt_mpdu == NULL))
 447                         crypt = NULL;
 448
 449                 if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
 450                         /* This seems to be triggered by some (multicast?)
 451                          * frames from other than current BSS, so just drop the
 452                          * frames silently instead of filling system log with
 453                          * these reports. */
 454                         LIBIPW_DEBUG_DROP("Decryption failed (not set)"
 455                                              " (SA=%pM)\n", hdr->addr2);
 456                         ieee->ieee_stats.rx_discards_undecryptable++;
 457                         goto rx_dropped;
 458                 }
 459         }
 460 #ifdef NOT_YET
 461         if (type != WLAN_FC_TYPE_DATA) {
 462                 if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH &&
 463                     fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt &&
 464                     (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) {
 465                         printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
 466                                "from %pM\n", dev->name, hdr->addr2);
 467                         /* TODO: could inform hostapd about this so that it
 468                          * could send auth failure report */
 469                         goto rx_dropped;
 470                 }
 471
 472                 if (libipw_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
 473                         goto rx_dropped;
 474                 else
 475                         goto rx_exit;
 476         }
 477 #endif
 478         /* drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.29) */
 479         if (sc == ieee->prev_seq_ctl)
 480                 goto rx_dropped;
 481         else
 482                 ieee->prev_seq_ctl = sc;
 483
 484         /* Data frame - extract src/dst addresses */
 485         if (skb->len < LIBIPW_3ADDR_LEN)
 486                 goto rx_dropped;
 487
 488         switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
 489         case IEEE80211_FCTL_FROMDS:
 490                 memcpy(dst, hdr->addr1, ETH_ALEN);
 491                 memcpy(src, hdr->addr3, ETH_ALEN);
 492                 break;
 493         case IEEE80211_FCTL_TODS:
 494                 memcpy(dst, hdr->addr3, ETH_ALEN);
 495                 memcpy(src, hdr->addr2, ETH_ALEN);
 496                 break;
 497         case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
 498                 if (skb->len < LIBIPW_4ADDR_LEN)
 499                         goto rx_dropped;
 500                 memcpy(dst, hdr->addr3, ETH_ALEN);
 501                 memcpy(src, hdr->addr4, ETH_ALEN);
 502                 break;
 503         default:
 504                 memcpy(dst, hdr->addr1, ETH_ALEN);
 505                 memcpy(src, hdr->addr2, ETH_ALEN);
 506                 break;
 507         }
 508
 509 #ifdef NOT_YET
 510         if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
 511                 goto rx_dropped;
 512         if (wds) {
 513                 skb->dev = dev = wds;
 514                 stats = hostap_get_stats(dev);
 515         }
 516
 517         if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
 518             (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
 519             IEEE80211_FCTL_FROMDS && ieee->stadev &&
 520             ether_addr_equal(hdr->addr2, ieee->assoc_ap_addr)) {
 521                 /* Frame from BSSID of the AP for which we are a client */
 522                 skb->dev = dev = ieee->stadev;
 523                 stats = hostap_get_stats(dev);
 524                 from_assoc_ap = 1;
 525         }
 526 #endif
 527
 528 #ifdef NOT_YET
 529         if ((ieee->iw_mode == IW_MODE_MASTER ||
 530              ieee->iw_mode == IW_MODE_REPEAT) && !from_assoc_ap) {
 531                 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
 532                                              wds != NULL)) {
 533                 case AP_RX_CONTINUE_NOT_AUTHORIZED:
 534                         frame_authorized = 0;
 535                         break;
 536                 case AP_RX_CONTINUE:
 537                         frame_authorized = 1;
 538                         break;
 539                 case AP_RX_DROP:
 540                         goto rx_dropped;
 541                 case AP_RX_EXIT:
 542                         goto rx_exit;
 543                 }
 544         }
 545 #endif
 546
 547         /* Nullfunc frames may have PS-bit set, so they must be passed to
 548          * hostap_handle_sta_rx() before being dropped here. */
 549
 550         stype &= ~IEEE80211_STYPE_QOS_DATA;
 551
 552         if (stype != IEEE80211_STYPE_DATA &&
 553             stype != IEEE80211_STYPE_DATA_CFACK &&
 554             stype != IEEE80211_STYPE_DATA_CFPOLL &&
 555             stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
 556                 if (stype != IEEE80211_STYPE_NULLFUNC)
 557                         LIBIPW_DEBUG_DROP("RX: dropped data frame "
 558                                              "with no data (type=0x%02x, "
 559                                              "subtype=0x%02x, len=%d)\n",
 560                                              type, stype, skb->len);
 561                 goto rx_dropped;
 562         }
 563
 564         /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
 565
 566         if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted &&
 567             (keyidx = libipw_rx_frame_decrypt(ieee, skb, crypt)) < 0)
 568                 goto rx_dropped;
 569
 570         hdr = (struct libipw_hdr_4addr *)skb->data;
 571
 572         /* skb: hdr + (possibly fragmented) plaintext payload */
 573         // PR: FIXME: hostap has additional conditions in the "if" below:
 574         // ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
 575         if ((frag != 0) || (fc & IEEE80211_FCTL_MOREFRAGS)) {
 576                 int flen;
 577                 struct sk_buff *frag_skb = libipw_frag_cache_get(ieee, hdr);
 578                 LIBIPW_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
 579
 580                 if (!frag_skb) {
 581                         LIBIPW_DEBUG(LIBIPW_DL_RX | LIBIPW_DL_FRAG,
 582                                         "Rx cannot get skb from fragment "
 583                                         "cache (morefrag=%d seq=%u frag=%u)\n",
 584                                         (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
 585                                         WLAN_GET_SEQ_SEQ(sc), frag);
 586                         goto rx_dropped;
 587                 }
 588
 589                 flen = skb->len;
 590                 if (frag != 0)
 591                         flen -= hdrlen;
 592
 593                 if (frag_skb->tail + flen > frag_skb->end) {
 594                         printk(KERN_WARNING "%s: host decrypted and "
 595                                "reassembled frame did not fit skb\n",
 596                                dev->name);
 597                         libipw_frag_cache_invalidate(ieee, hdr);
 598                         goto rx_dropped;
 599                 }
 600
 601                 if (frag == 0) {
 602                         /* copy first fragment (including full headers) into
 603                          * beginning of the fragment cache skb */
 604                         skb_copy_from_linear_data(skb, skb_put(frag_skb, flen), flen);
 605                 } else {
 606                         /* append frame payload to the end of the fragment
 607                          * cache skb */
 608                         skb_copy_from_linear_data_offset(skb, hdrlen,
 609                                       skb_put(frag_skb, flen), flen);
 610                 }
 611                 dev_kfree_skb_any(skb);
 612                 skb = NULL;
 613
 614                 if (fc & IEEE80211_FCTL_MOREFRAGS) {
 615                         /* more fragments expected - leave the skb in fragment
 616                          * cache for now; it will be delivered to upper layers
 617                          * after all fragments have been received */
 618                         goto rx_exit;
 619                 }
 620
 621                 /* this was the last fragment and the frame will be
 622                  * delivered, so remove skb from fragment cache */
 623                 skb = frag_skb;
 624                 hdr = (struct libipw_hdr_4addr *)skb->data;
 625                 libipw_frag_cache_invalidate(ieee, hdr);
 626         }
 627
 628         /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
 629          * encrypted/authenticated */
 630         if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted &&
 631             libipw_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
 632                 goto rx_dropped;
 633
 634         hdr = (struct libipw_hdr_4addr *)skb->data;
 635         if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) {
 636                 if (            /*ieee->ieee802_1x && */
 637                            libipw_is_eapol_frame(ieee, skb)) {
 638                         /* pass unencrypted EAPOL frames even if encryption is
 639                          * configured */
 640                 } else {
 641                         LIBIPW_DEBUG_DROP("encryption configured, but RX "
 642                                              "frame not encrypted (SA=%pM)\n",
 643                                              hdr->addr2);
 644                         goto rx_dropped;
 645                 }
 646         }
 647
 648         if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep &&
 649             !libipw_is_eapol_frame(ieee, skb)) {
 650                 LIBIPW_DEBUG_DROP("dropped unencrypted RX data "
 651                                      "frame from %pM (drop_unencrypted=1)\n",
 652                                      hdr->addr2);
 653                 goto rx_dropped;
 654         }
 655
 656         /* If the frame was decrypted in hardware, we may need to strip off
 657          * any security data (IV, ICV, etc) that was left behind */
 658         if (!can_be_decrypted && (fc & IEEE80211_FCTL_PROTECTED) &&
 659             ieee->host_strip_iv_icv) {
 660                 int trimlen = 0;
 661
 662                 /* Top two-bits of byte 3 are the key index */
 663                 if (skb->len >= hdrlen + 3)
 664                         keyidx = skb->data[hdrlen + 3] >> 6;
 665
 666                 /* To strip off any security data which appears before the
 667                  * payload, we simply increase hdrlen (as the header gets
 668                  * chopped off immediately below). For the security data which
 669                  * appears after the payload, we use skb_trim. */
 670
 671                 switch (ieee->sec.encode_alg[keyidx]) {
 672                 case SEC_ALG_WEP:
 673                         /* 4 byte IV */
 674                         hdrlen += 4;
 675                         /* 4 byte ICV */
 676                         trimlen = 4;
 677                         break;
 678                 case SEC_ALG_TKIP:
 679                         /* 4 byte IV, 4 byte ExtIV */
 680                         hdrlen += 8;
 681                         /* 8 byte MIC, 4 byte ICV */
 682                         trimlen = 12;
 683                         break;
 684                 case SEC_ALG_CCMP:
 685                         /* 8 byte CCMP header */
 686                         hdrlen += 8;
 687                         /* 8 byte MIC */
 688                         trimlen = 8;
 689                         break;
 690                 }
 691
 692                 if (skb->len < trimlen)
 693                         goto rx_dropped;
 694
 695                 __skb_trim(skb, skb->len - trimlen);
 696
 697                 if (skb->len < hdrlen)
 698                         goto rx_dropped;
 699         }
 700
 701         /* skb: hdr + (possible reassembled) full plaintext payload */
 702
 703         payload = skb->data + hdrlen;
 704         ethertype = (payload[6] << 8) | payload[7];
 705
 706 #ifdef NOT_YET
 707         /* If IEEE 802.1X is used, check whether the port is authorized to send
 708          * the received frame. */
 709         if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) {
 710                 if (ethertype == ETH_P_PAE) {
 711                         printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n",
 712                                dev->name);
 713                         if (ieee->hostapd && ieee->apdev) {
 714                                 /* Send IEEE 802.1X frames to the user
 715                                  * space daemon for processing */
 716                                 prism2_rx_80211(ieee->apdev, skb, rx_stats,
 717                                                 PRISM2_RX_MGMT);
 718                                 ieee->apdevstats.rx_packets++;
 719                                 ieee->apdevstats.rx_bytes += skb->len;
 720                                 goto rx_exit;
 721                         }
 722                 } else if (!frame_authorized) {
 723                         printk(KERN_DEBUG "%s: dropped frame from "
 724                                "unauthorized port (IEEE 802.1X): "
 725                                "ethertype=0x%04x\n", dev->name, ethertype);
 726                         goto rx_dropped;
 727                 }
 728         }
 729 #endif
 730
 731         /* convert hdr + possible LLC headers into Ethernet header */
 732         if (skb->len - hdrlen >= 8 &&
 733             ((memcmp(payload, libipw_rfc1042_header, SNAP_SIZE) == 0 &&
 734               ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
 735              memcmp(payload, libipw_bridge_tunnel_header, SNAP_SIZE) == 0)) {
 736                 /* remove RFC1042 or Bridge-Tunnel encapsulation and
 737                  * replace EtherType */
 738                 skb_pull(skb, hdrlen + SNAP_SIZE);
 739                 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
 740                 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
 741         } else {
 742                 __be16 len;
 743                 /* Leave Ethernet header part of hdr and full payload */
 744                 skb_pull(skb, hdrlen);
 745                 len = htons(skb->len);
 746                 memcpy(skb_push(skb, 2), &len, 2);
 747                 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
 748                 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
 749         }
 750
 751 #ifdef NOT_YET
 752         if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
 753                     IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
 754                 /* Non-standard frame: get addr4 from its bogus location after
 755                  * the payload */
 756                 skb_copy_to_linear_data_offset(skb, ETH_ALEN,
 757                                                skb->data + skb->len - ETH_ALEN,
 758                                                ETH_ALEN);
 759                 skb_trim(skb, skb->len - ETH_ALEN);
 760         }
 761 #endif
 762
 763         dev->stats.rx_packets++;
 764         dev->stats.rx_bytes += skb->len;
 765
 766 #ifdef NOT_YET
 767         if (ieee->iw_mode == IW_MODE_MASTER && !wds && ieee->ap->bridge_packets) {
 768                 if (is_multicast_ether_addr(dst)) {
 769                         /* copy multicast frame both to the higher layers and
 770                          * to the wireless media */
 771                         ieee->ap->bridged_multicast++;
 772                         skb2 = skb_clone(skb, GFP_ATOMIC);
 773                         if (skb2 == NULL)
 774                                 printk(KERN_DEBUG "%s: skb_clone failed for "
 775                                        "multicast frame\n", dev->name);
 776                 } else if (hostap_is_sta_assoc(ieee->ap, dst)) {
 777                         /* send frame directly to the associated STA using
 778                          * wireless media and not passing to higher layers */
 779                         ieee->ap->bridged_unicast++;
 780                         skb2 = skb;
 781                         skb = NULL;
 782                 }
 783         }
 784
 785         if (skb2 != NULL) {
 786                 /* send to wireless media */
 787                 skb2->dev = dev;
 788                 skb2->protocol = htons(ETH_P_802_3);
 789                 skb_reset_mac_header(skb2);
 790                 skb_reset_network_header(skb2);
 791                 /* skb2->network_header += ETH_HLEN; */
 792                 dev_queue_xmit(skb2);
 793         }
 794 #endif
 795
 796         if (skb) {
 797                 skb->protocol = eth_type_trans(skb, dev);
 798                 memset(skb->cb, 0, sizeof(skb->cb));
 799                 skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
 800                 if (netif_rx(skb) == NET_RX_DROP) {
 801                         /* netif_rx always succeeds, but it might drop
 802                          * the packet.  If it drops the packet, we log that
 803                          * in our stats. */
 804                         LIBIPW_DEBUG_DROP
 805                             ("RX: netif_rx dropped the packet\n");
 806                         dev->stats.rx_dropped++;
 807                 }
 808         }
 809
 810       rx_exit:
 811 #ifdef NOT_YET
 812         if (sta)
 813                 hostap_handle_sta_release(sta);
 814 #endif
 815         return 1;
 816
 817       rx_dropped:
 818         dev->stats.rx_dropped++;
 819
 820         /* Returning 0 indicates to caller that we have not handled the SKB--
 821          * so it is still allocated and can be used again by underlying
 822          * hardware as a DMA target */
 823         return 0;
 824 }
 825
 826 /* Filter out unrelated packets, call libipw_rx[_mgt]
 827  * This function takes over the skb, it should not be used again after calling
 828  * this function. */
 829 void libipw_rx_any(struct libipw_device *ieee,
 830                      struct sk_buff *skb, struct libipw_rx_stats *stats)
 831 {
 832         struct libipw_hdr_4addr *hdr;
 833         int is_packet_for_us;
 834         u16 fc;
 835
 836         if (ieee->iw_mode == IW_MODE_MONITOR) {
 837                 if (!libipw_rx(ieee, skb, stats))
 838                         dev_kfree_skb_irq(skb);
 839                 return;
 840         }
 841
 842         if (skb->len < sizeof(struct ieee80211_hdr))
 843                 goto drop_free;
 844
 845         hdr = (struct libipw_hdr_4addr *)skb->data;
 846         fc = le16_to_cpu(hdr->frame_ctl);
 847
 848         if ((fc & IEEE80211_FCTL_VERS) != 0)
 849                 goto drop_free;
 850
 851         switch (fc & IEEE80211_FCTL_FTYPE) {
 852         case IEEE80211_FTYPE_MGMT:
 853                 if (skb->len < sizeof(struct libipw_hdr_3addr))
 854                         goto drop_free;
 855                 libipw_rx_mgt(ieee, hdr, stats);
 856                 dev_kfree_skb_irq(skb);
 857                 return;
 858         case IEEE80211_FTYPE_DATA:
 859                 break;
 860         case IEEE80211_FTYPE_CTL:
 861                 return;
 862         default:
 863                 return;
 864         }
 865
 866         is_packet_for_us = 0;
 867         switch (ieee->iw_mode) {
 868         case IW_MODE_ADHOC:
 869                 /* our BSS and not from/to DS */
 870                 if (ether_addr_equal(hdr->addr3, ieee->bssid) &&
 871                     ((fc & (IEEE80211_FCTL_TODS + IEEE80211_FCTL_FROMDS)) == 0)) {
 872                         /* promisc: get all */
 873                         if (ieee->dev->flags & IFF_PROMISC)
 874                                 is_packet_for_us = 1;
 875                         /* to us */
 876                         else if (ether_addr_equal(hdr->addr1, ieee->dev->dev_addr))
 877                                 is_packet_for_us = 1;
 878                         /* mcast */
 879                         else if (is_multicast_ether_addr(hdr->addr1))
 880                                 is_packet_for_us = 1;
 881                 }
 882                 break;
 883         case IW_MODE_INFRA:
 884                 /* our BSS (== from our AP) and from DS */
 885                 if (ether_addr_equal(hdr->addr2, ieee->bssid) &&
 886                     ((fc & (IEEE80211_FCTL_TODS + IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS)) {
 887                         /* promisc: get all */
 888                         if (ieee->dev->flags & IFF_PROMISC)
 889                                 is_packet_for_us = 1;
 890                         /* to us */
 891                         else if (ether_addr_equal(hdr->addr1, ieee->dev->dev_addr))
 892                                 is_packet_for_us = 1;
 893                         /* mcast */
 894                         else if (is_multicast_ether_addr(hdr->addr1)) {
 895                                 /* not our own packet bcasted from AP */
 896                                 if (!ether_addr_equal(hdr->addr3, ieee->dev->dev_addr))
 897                                         is_packet_for_us = 1;
 898                         }
 899                 }
 900                 break;
 901         default:
 902                 /* ? */
 903                 break;
 904         }
 905
 906         if (is_packet_for_us)
 907                 if (!libipw_rx(ieee, skb, stats))
 908                         dev_kfree_skb_irq(skb);
 909         return;
 910
 911 drop_free:
 912         dev_kfree_skb_irq(skb);
 913         ieee->dev->stats.rx_dropped++;
 914 }
 915
 916 #define MGMT_FRAME_FIXED_PART_LENGTH            0x24
 917
 918 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
 919
 920 /*
 921 * Make the structure we read from the beacon packet to have
 922 * the right values
 923 */
 924 static int libipw_verify_qos_info(struct libipw_qos_information_element
 925                                      *info_element, int sub_type)
 926 {
 927         if (info_element->elementID != QOS_ELEMENT_ID)
 928                 return -1;
 929         if (info_element->qui_subtype != sub_type)
 930                 return -1;
 931         if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
 932                 return -1;
 933         if (info_element->qui_type != QOS_OUI_TYPE)
 934                 return -1;
 935         if (info_element->version != QOS_VERSION_1)
 936                 return -1;
 937
 938         return 0;
 939 }
 940
 941 /*
 942  * Parse a QoS parameter element
 943  */
 944 static int libipw_read_qos_param_element(
 945                         struct libipw_qos_parameter_info *element_param,
 946                         struct libipw_info_element *info_element)
 947 {
 948         size_t size = sizeof(*element_param);
 949
 950         if (!element_param || !info_element || info_element->len != size - 2)
 951                 return -1;
 952
 953         memcpy(element_param, info_element, size);
 954         return libipw_verify_qos_info(&element_param->info_element,
 955                                       QOS_OUI_PARAM_SUB_TYPE);
 956 }
 957
 958 /*
 959  * Parse a QoS information element
 960  */
 961 static int libipw_read_qos_info_element(
 962                         struct libipw_qos_information_element *element_info,
 963                         struct libipw_info_element *info_element)
 964 {
 965         size_t size = sizeof(struct libipw_qos_information_element) - 2;
 966
 967         if (!element_info || !info_element || info_element->len != size - 2)
 968                 return -1;
 969
 970         memcpy(element_info, info_element, size);
 971         return libipw_verify_qos_info(element_info, QOS_OUI_INFO_SUB_TYPE);
 972 }
 973
 974 /*
 975  * Write QoS parameters from the ac parameters.
 976  */
 977 static void libipw_qos_convert_ac_to_parameters(struct
 978                                                   libipw_qos_parameter_info
 979                                                   *param_elm, struct
 980                                                   libipw_qos_parameters
 981                                                   *qos_param)
 982 {
 983         int i;
 984         struct libipw_qos_ac_parameter *ac_params;
 985         u32 txop;
 986         u8 cw_min;
 987         u8 cw_max;
 988
 989         for (i = 0; i < QOS_QUEUE_NUM; i++) {
 990                 ac_params = &(param_elm->ac_params_record[i]);
 991
 992                 qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F;
 993                 qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2;
 994
 995                 cw_min = ac_params->ecw_min_max & 0x0F;
 996                 qos_param->cw_min[i] = cpu_to_le16((1 << cw_min) - 1);
 997
 998                 cw_max = (ac_params->ecw_min_max & 0xF0) >> 4;
 999                 qos_param->cw_max[i] = cpu_to_le16((1 << cw_max) - 1);
1000
1001                 qos_param->flag[i] =
1002                     (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1003
1004                 txop = le16_to_cpu(ac_params->tx_op_limit) * 32;
1005                 qos_param->tx_op_limit[i] = cpu_to_le16(txop);
1006         }
1007 }
1008
1009 /*
1010  * we have a generic data element which it may contain QoS information or
1011  * parameters element. check the information element length to decide
1012  * which type to read
1013  */
1014 static int libipw_parse_qos_info_param_IE(struct libipw_info_element
1015                                              *info_element,
1016                                              struct libipw_network *network)
1017 {
1018         int rc = 0;
1019         struct libipw_qos_parameters *qos_param = NULL;
1020         struct libipw_qos_information_element qos_info_element;
1021
1022         rc = libipw_read_qos_info_element(&qos_info_element, info_element);
1023
1024         if (rc == 0) {
1025                 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1026                 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1027         } else {
1028                 struct libipw_qos_parameter_info param_element;
1029
1030                 rc = libipw_read_qos_param_element(&param_element,
1031                                                       info_element);
1032                 if (rc == 0) {
1033                         qos_param = &(network->qos_data.parameters);
1034                         libipw_qos_convert_ac_to_parameters(&param_element,
1035                                                                qos_param);
1036                         network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1037                         network->qos_data.param_count =
1038                             param_element.info_element.ac_info & 0x0F;
1039                 }
1040         }
1041
1042         if (rc == 0) {
1043                 LIBIPW_DEBUG_QOS("QoS is supported\n");
1044                 network->qos_data.supported = 1;
1045         }
1046         return rc;
1047 }
1048
1049 #ifdef CONFIG_LIBIPW_DEBUG
1050 #define MFIE_STRING(x) case WLAN_EID_ ##x: return #x
1051
1052 static const char *get_info_element_string(u16 id)
1053 {
1054         switch (id) {
1055                 MFIE_STRING(SSID);
1056                 MFIE_STRING(SUPP_RATES);
1057                 MFIE_STRING(FH_PARAMS);
1058                 MFIE_STRING(DS_PARAMS);
1059                 MFIE_STRING(CF_PARAMS);
1060                 MFIE_STRING(TIM);
1061                 MFIE_STRING(IBSS_PARAMS);
1062                 MFIE_STRING(COUNTRY);
1063                 MFIE_STRING(REQUEST);
1064                 MFIE_STRING(CHALLENGE);
1065                 MFIE_STRING(PWR_CONSTRAINT);
1066                 MFIE_STRING(PWR_CAPABILITY);
1067                 MFIE_STRING(TPC_REQUEST);
1068                 MFIE_STRING(TPC_REPORT);
1069                 MFIE_STRING(SUPPORTED_CHANNELS);
1070                 MFIE_STRING(CHANNEL_SWITCH);
1071                 MFIE_STRING(MEASURE_REQUEST);
1072                 MFIE_STRING(MEASURE_REPORT);
1073                 MFIE_STRING(QUIET);
1074                 MFIE_STRING(IBSS_DFS);
1075                 MFIE_STRING(ERP_INFO);
1076                 MFIE_STRING(RSN);
1077                 MFIE_STRING(EXT_SUPP_RATES);
1078                 MFIE_STRING(VENDOR_SPECIFIC);
1079                 MFIE_STRING(QOS_PARAMETER);
1080         default:
1081                 return "UNKNOWN";
1082         }
1083 }
1084 #endif
1085
1086 static int libipw_parse_info_param(struct libipw_info_element
1087                                       *info_element, u16 length,
1088                                       struct libipw_network *network)
1089 {
1090         u8 i;
1091 #ifdef CONFIG_LIBIPW_DEBUG
1092         char rates_str[64];
1093         char *p;
1094 #endif
1095
1096         while (length >= sizeof(*info_element)) {
1097                 if (sizeof(*info_element) + info_element->len > length) {
1098                         LIBIPW_DEBUG_MGMT("Info elem: parse failed: "
1099                                              "info_element->len + 2 > left : "
1100                                              "info_element->len+2=%zd left=%d, id=%d.\n",
1101                                              info_element->len +
1102                                              sizeof(*info_element),
1103                                              length, info_element->id);
1104                         /* We stop processing but don't return an error here
1105                          * because some misbehaviour APs break this rule. ie.
1106                          * Orinoco AP1000. */
1107                         break;
1108                 }
1109
1110                 switch (info_element->id) {
1111                 case WLAN_EID_SSID:
1112                         network->ssid_len = min(info_element->len,
1113                                                 (u8) IW_ESSID_MAX_SIZE);
1114                         memcpy(network->ssid, info_element->data,
1115                                network->ssid_len);
1116                         if (network->ssid_len < IW_ESSID_MAX_SIZE)
1117                                 memset(network->ssid + network->ssid_len, 0,
1118                                        IW_ESSID_MAX_SIZE - network->ssid_len);
1119
1120                         LIBIPW_DEBUG_MGMT("WLAN_EID_SSID: '%*pE' len=%d.\n",
1121                                           network->ssid_len, network->ssid,
1122                                           network->ssid_len);
1123                         break;
1124
1125                 case WLAN_EID_SUPP_RATES:
1126 #ifdef CONFIG_LIBIPW_DEBUG
1127                         p = rates_str;
1128 #endif
1129                         network->rates_len = min(info_element->len,
1130                                                  MAX_RATES_LENGTH);
1131                         for (i = 0; i < network->rates_len; i++) {
1132                                 network->rates[i] = info_element->data[i];
1133 #ifdef CONFIG_LIBIPW_DEBUG
1134                                 p += scnprintf(p, sizeof(rates_str) -
1135                                               (p - rates_str), "%02X ",
1136                                               network->rates[i]);
1137 #endif
1138                                 if (libipw_is_ofdm_rate
1139                                     (info_element->data[i])) {
1140                                         network->flags |= NETWORK_HAS_OFDM;
1141                                         if (info_element->data[i] &
1142                                             LIBIPW_BASIC_RATE_MASK)
1143                                                 network->flags &=
1144                                                     ~NETWORK_HAS_CCK;
1145                                 }
1146                         }
1147
1148                         LIBIPW_DEBUG_MGMT("WLAN_EID_SUPP_RATES: '%s' (%d)\n",
1149                                              rates_str, network->rates_len);
1150                         break;
1151
1152                 case WLAN_EID_EXT_SUPP_RATES:
1153 #ifdef CONFIG_LIBIPW_DEBUG
1154                         p = rates_str;
1155 #endif
1156                         network->rates_ex_len = min(info_element->len,
1157                                                     MAX_RATES_EX_LENGTH);
1158                         for (i = 0; i < network->rates_ex_len; i++) {
1159                                 network->rates_ex[i] = info_element->data[i];
1160 #ifdef CONFIG_LIBIPW_DEBUG
1161                                 p += scnprintf(p, sizeof(rates_str) -
1162                                               (p - rates_str), "%02X ",
1163                                               network->rates_ex[i]);
1164 #endif
1165                                 if (libipw_is_ofdm_rate
1166                                     (info_element->data[i])) {
1167                                         network->flags |= NETWORK_HAS_OFDM;
1168                                         if (info_element->data[i] &
1169                                             LIBIPW_BASIC_RATE_MASK)
1170                                                 network->flags &=
1171                                                     ~NETWORK_HAS_CCK;
1172                                 }
1173                         }
1174
1175                         LIBIPW_DEBUG_MGMT("WLAN_EID_EXT_SUPP_RATES: '%s' (%d)\n",
1176                                              rates_str, network->rates_ex_len);
1177                         break;
1178
1179                 case WLAN_EID_DS_PARAMS:
1180                         LIBIPW_DEBUG_MGMT("WLAN_EID_DS_PARAMS: %d\n",
1181                                              info_element->data[0]);
1182                         network->channel = info_element->data[0];
1183                         break;
1184
1185                 case WLAN_EID_FH_PARAMS:
1186                         LIBIPW_DEBUG_MGMT("WLAN_EID_FH_PARAMS: ignored\n");
1187                         break;
1188
1189                 case WLAN_EID_CF_PARAMS:
1190                         LIBIPW_DEBUG_MGMT("WLAN_EID_CF_PARAMS: ignored\n");
1191                         break;
1192
1193                 case WLAN_EID_TIM:
1194                         network->tim.tim_count = info_element->data[0];
1195                         network->tim.tim_period = info_element->data[1];
1196                         LIBIPW_DEBUG_MGMT("WLAN_EID_TIM: partially ignored\n");
1197                         break;
1198
1199                 case WLAN_EID_ERP_INFO:
1200                         network->erp_value = info_element->data[0];
1201                         network->flags |= NETWORK_HAS_ERP_VALUE;
1202                         LIBIPW_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1203                                              network->erp_value);
1204                         break;
1205
1206                 case WLAN_EID_IBSS_PARAMS:
1207                         network->atim_window = info_element->data[0];
1208                         LIBIPW_DEBUG_MGMT("WLAN_EID_IBSS_PARAMS: %d\n",
1209                                              network->atim_window);
1210                         break;
1211
1212                 case WLAN_EID_CHALLENGE:
1213                         LIBIPW_DEBUG_MGMT("WLAN_EID_CHALLENGE: ignored\n");
1214                         break;
1215
1216                 case WLAN_EID_VENDOR_SPECIFIC:
1217                         LIBIPW_DEBUG_MGMT("WLAN_EID_VENDOR_SPECIFIC: %d bytes\n",
1218                                              info_element->len);
1219                         if (!libipw_parse_qos_info_param_IE(info_element,
1220                                                                network))
1221                                 break;
1222
1223                         if (info_element->len >= 4 &&
1224                             info_element->data[0] == 0x00 &&
1225                             info_element->data[1] == 0x50 &&
1226                             info_element->data[2] == 0xf2 &&
1227                             info_element->data[3] == 0x01) {
1228                                 network->wpa_ie_len = min(info_element->len + 2,
1229                                                           MAX_WPA_IE_LEN);
1230                                 memcpy(network->wpa_ie, info_element,
1231                                        network->wpa_ie_len);
1232                         }
1233                         break;
1234
1235                 case WLAN_EID_RSN:
1236                         LIBIPW_DEBUG_MGMT("WLAN_EID_RSN: %d bytes\n",
1237                                              info_element->len);
1238                         network->rsn_ie_len = min(info_element->len + 2,
1239                                                   MAX_WPA_IE_LEN);
1240                         memcpy(network->rsn_ie, info_element,
1241                                network->rsn_ie_len);
1242                         break;
1243
1244                 case WLAN_EID_QOS_PARAMETER:
1245                         printk(KERN_ERR
1246                                "QoS Error need to parse QOS_PARAMETER IE\n");
1247                         break;
1248                         /* 802.11h */
1249                 case WLAN_EID_PWR_CONSTRAINT:
1250                         network->power_constraint = info_element->data[0];
1251                         network->flags |= NETWORK_HAS_POWER_CONSTRAINT;
1252                         break;
1253
1254                 case WLAN_EID_CHANNEL_SWITCH:
1255                         network->power_constraint = info_element->data[0];
1256                         network->flags |= NETWORK_HAS_CSA;
1257                         break;
1258
1259                 case WLAN_EID_QUIET:
1260                         network->quiet.count = info_element->data[0];
1261                         network->quiet.period = info_element->data[1];
1262                         network->quiet.duration = info_element->data[2];
1263                         network->quiet.offset = info_element->data[3];
1264                         network->flags |= NETWORK_HAS_QUIET;
1265                         break;
1266
1267                 case WLAN_EID_IBSS_DFS:
1268                         network->flags |= NETWORK_HAS_IBSS_DFS;
1269                         break;
1270
1271                 case WLAN_EID_TPC_REPORT:
1272                         network->tpc_report.transmit_power =
1273                             info_element->data[0];
1274                         network->tpc_report.link_margin = info_element->data[1];
1275                         network->flags |= NETWORK_HAS_TPC_REPORT;
1276                         break;
1277
1278                 default:
1279                         LIBIPW_DEBUG_MGMT
1280                             ("Unsupported info element: %s (%d)\n",
1281                              get_info_element_string(info_element->id),
1282                              info_element->id);
1283                         break;
1284                 }
1285
1286                 length -= sizeof(*info_element) + info_element->len;
1287                 info_element =
1288                     (struct libipw_info_element *)&info_element->
1289                     data[info_element->len];
1290         }
1291
1292         return 0;
1293 }
1294
1295 static int libipw_handle_assoc_resp(struct libipw_device *ieee, struct libipw_assoc_response
1296                                        *frame, struct libipw_rx_stats *stats)
1297 {
1298         struct libipw_network network_resp = { };
1299         struct libipw_network *network = &network_resp;
1300         struct net_device *dev = ieee->dev;
1301
1302         network->flags = 0;
1303         network->qos_data.active = 0;
1304         network->qos_data.supported = 0;
1305         network->qos_data.param_count = 0;
1306         network->qos_data.old_param_count = 0;
1307
1308         //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF);
1309         network->atim_window = le16_to_cpu(frame->aid);
1310         network->listen_interval = le16_to_cpu(frame->status);
1311         memcpy(network->bssid, frame->header.addr3, ETH_ALEN);
1312         network->capability = le16_to_cpu(frame->capability);
1313         network->last_scanned = jiffies;
1314         network->rates_len = network->rates_ex_len = 0;
1315         network->last_associate = 0;
1316         network->ssid_len = 0;
1317         network->erp_value =
1318             (network->capability & WLAN_CAPABILITY_IBSS) ? 0x3 : 0x0;
1319
1320         if (stats->freq == LIBIPW_52GHZ_BAND) {
1321                 /* for A band (No DS info) */
1322                 network->channel = stats->received_channel;
1323         } else
1324                 network->flags |= NETWORK_HAS_CCK;
1325
1326         network->wpa_ie_len = 0;
1327         network->rsn_ie_len = 0;
1328
1329         if (libipw_parse_info_param((void *)frame->variable,
1330                                     stats->len - sizeof(*frame), network))
1331                 return 1;
1332
1333         network->mode = 0;
1334         if (stats->freq == LIBIPW_52GHZ_BAND)
1335                 network->mode = IEEE_A;
1336         else {
1337                 if (network->flags & NETWORK_HAS_OFDM)
1338                         network->mode |= IEEE_G;
1339                 if (network->flags & NETWORK_HAS_CCK)
1340                         network->mode |= IEEE_B;
1341         }
1342
1343         memcpy(&network->stats, stats, sizeof(network->stats));
1344
1345         if (ieee->handle_assoc_response != NULL)
1346                 ieee->handle_assoc_response(dev, frame, network);
1347
1348         return 0;
1349 }
1350
1351 /***************************************************/
1352
1353 static int libipw_network_init(struct libipw_device *ieee, struct libipw_probe_response
1354                                          *beacon,
1355                                          struct libipw_network *network,
1356                                          struct libipw_rx_stats *stats)
1357 {
1358         network->qos_data.active = 0;
1359         network->qos_data.supported = 0;
1360         network->qos_data.param_count = 0;
1361         network->qos_data.old_param_count = 0;
1362
1363         /* Pull out fixed field data */
1364         memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
1365         network->capability = le16_to_cpu(beacon->capability);
1366         network->last_scanned = jiffies;
1367         network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
1368         network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1369         network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
1370         /* Where to pull this? beacon->listen_interval; */
1371         network->listen_interval = 0x0A;
1372         network->rates_len = network->rates_ex_len = 0;
1373         network->last_associate = 0;
1374         network->ssid_len = 0;
1375         network->flags = 0;
1376         network->atim_window = 0;
1377         network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
1378             0x3 : 0x0;
1379
1380         if (stats->freq == LIBIPW_52GHZ_BAND) {
1381                 /* for A band (No DS info) */
1382                 network->channel = stats->received_channel;
1383         } else
1384                 network->flags |= NETWORK_HAS_CCK;
1385
1386         network->wpa_ie_len = 0;
1387         network->rsn_ie_len = 0;
1388
1389         if (libipw_parse_info_param((void *)beacon->variable,
1390                                     stats->len - sizeof(*beacon), network))
1391                 return 1;
1392
1393         network->mode = 0;
1394         if (stats->freq == LIBIPW_52GHZ_BAND)
1395                 network->mode = IEEE_A;
1396         else {
1397                 if (network->flags & NETWORK_HAS_OFDM)
1398                         network->mode |= IEEE_G;
1399                 if (network->flags & NETWORK_HAS_CCK)
1400                         network->mode |= IEEE_B;
1401         }
1402
1403         if (network->mode == 0) {
1404                 LIBIPW_DEBUG_SCAN("Filtered out '%*pE (%pM)' network.\n",
1405                                   network->ssid_len, network->ssid,
1406                                   network->bssid);
1407                 return 1;
1408         }
1409
1410         memcpy(&network->stats, stats, sizeof(network->stats));
1411
1412         return 0;
1413 }
1414
1415 static inline int is_same_network(struct libipw_network *src,
1416                                   struct libipw_network *dst)
1417 {
1418         /* A network is only a duplicate if the channel, BSSID, and ESSID
1419          * all match.  We treat all <hidden> with the same BSSID and channel
1420          * as one network */
1421         return ((src->ssid_len == dst->ssid_len) &&
1422                 (src->channel == dst->channel) &&
1423                 ether_addr_equal_64bits(src->bssid, dst->bssid) &&
1424                 !memcmp(src->ssid, dst->ssid, src->ssid_len));
1425 }
1426
1427 static void update_network(struct libipw_network *dst,
1428                                   struct libipw_network *src)
1429 {
1430         int qos_active;
1431         u8 old_param;
1432
1433         /* We only update the statistics if they were created by receiving
1434          * the network information on the actual channel the network is on.
1435          *
1436          * This keeps beacons received on neighbor channels from bringing
1437          * down the signal level of an AP. */
1438         if (dst->channel == src->stats.received_channel)
1439                 memcpy(&dst->stats, &src->stats,
1440                        sizeof(struct libipw_rx_stats));
1441         else
1442                 LIBIPW_DEBUG_SCAN("Network %pM info received "
1443                         "off channel (%d vs. %d)\n", src->bssid,
1444                         dst->channel, src->stats.received_channel);
1445
1446         dst->capability = src->capability;
1447         memcpy(dst->rates, src->rates, src->rates_len);
1448         dst->rates_len = src->rates_len;
1449         memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
1450         dst->rates_ex_len = src->rates_ex_len;
1451
1452         dst->mode = src->mode;
1453         dst->flags = src->flags;
1454         dst->time_stamp[0] = src->time_stamp[0];
1455         dst->time_stamp[1] = src->time_stamp[1];
1456
1457         dst->beacon_interval = src->beacon_interval;
1458         dst->listen_interval = src->listen_interval;
1459         dst->atim_window = src->atim_window;
1460         dst->erp_value = src->erp_value;
1461         dst->tim = src->tim;
1462
1463         memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
1464         dst->wpa_ie_len = src->wpa_ie_len;
1465         memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
1466         dst->rsn_ie_len = src->rsn_ie_len;
1467
1468         dst->last_scanned = jiffies;
1469         qos_active = src->qos_data.active;
1470         old_param = dst->qos_data.old_param_count;
1471         if (dst->flags & NETWORK_HAS_QOS_MASK)
1472                 memcpy(&dst->qos_data, &src->qos_data,
1473                        sizeof(struct libipw_qos_data));
1474         else {
1475                 dst->qos_data.supported = src->qos_data.supported;
1476                 dst->qos_data.param_count = src->qos_data.param_count;
1477         }
1478
1479         if (dst->qos_data.supported == 1) {
1480                 if (dst->ssid_len)
1481                         LIBIPW_DEBUG_QOS
1482                             ("QoS the network %s is QoS supported\n",
1483                              dst->ssid);
1484                 else
1485                         LIBIPW_DEBUG_QOS
1486                             ("QoS the network is QoS supported\n");
1487         }
1488         dst->qos_data.active = qos_active;
1489         dst->qos_data.old_param_count = old_param;
1490
1491         /* dst->last_associate is not overwritten */
1492 }
1493
1494 static inline int is_beacon(__le16 fc)
1495 {
1496         return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
1497 }
1498
1499 static void libipw_process_probe_response(struct libipw_device
1500                                                     *ieee, struct
1501                                                     libipw_probe_response
1502                                                     *beacon, struct libipw_rx_stats
1503                                                     *stats)
1504 {
1505         struct net_device *dev = ieee->dev;
1506         struct libipw_network network = { };
1507         struct libipw_network *target;
1508         struct libipw_network *oldest = NULL;
1509 #ifdef CONFIG_LIBIPW_DEBUG
1510         struct libipw_info_element *info_element = (void *)beacon->variable;
1511 #endif
1512         unsigned long flags;
1513
1514         LIBIPW_DEBUG_SCAN("'%*pE' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
1515                      info_element->len, info_element->data,
1516                      beacon->header.addr3,
1517                      (beacon->capability & cpu_to_le16(1 << 0xf)) ? '1' : '0',
1518                      (beacon->capability & cpu_to_le16(1 << 0xe)) ? '1' : '0',
1519                      (beacon->capability & cpu_to_le16(1 << 0xd)) ? '1' : '0',
1520                      (beacon->capability & cpu_to_le16(1 << 0xc)) ? '1' : '0',
1521                      (beacon->capability & cpu_to_le16(1 << 0xb)) ? '1' : '0',
1522                      (beacon->capability & cpu_to_le16(1 << 0xa)) ? '1' : '0',
1523                      (beacon->capability & cpu_to_le16(1 << 0x9)) ? '1' : '0',
1524                      (beacon->capability & cpu_to_le16(1 << 0x8)) ? '1' : '0',
1525                      (beacon->capability & cpu_to_le16(1 << 0x7)) ? '1' : '0',
1526                      (beacon->capability & cpu_to_le16(1 << 0x6)) ? '1' : '0',
1527                      (beacon->capability & cpu_to_le16(1 << 0x5)) ? '1' : '0',
1528                      (beacon->capability & cpu_to_le16(1 << 0x4)) ? '1' : '0',
1529                      (beacon->capability & cpu_to_le16(1 << 0x3)) ? '1' : '0',
1530                      (beacon->capability & cpu_to_le16(1 << 0x2)) ? '1' : '0',
1531                      (beacon->capability & cpu_to_le16(1 << 0x1)) ? '1' : '0',
1532                      (beacon->capability & cpu_to_le16(1 << 0x0)) ? '1' : '0');
1533
1534         if (libipw_network_init(ieee, beacon, &network, stats)) {
1535                 LIBIPW_DEBUG_SCAN("Dropped '%*pE' (%pM) via %s.\n",
1536                                   info_element->len, info_element->data,
1537                                   beacon->header.addr3,
1538                                   is_beacon(beacon->header.frame_ctl) ?
1539                                   "BEACON" : "PROBE RESPONSE");
1540                 return;
1541         }
1542
1543         /* The network parsed correctly -- so now we scan our known networks
1544          * to see if we can find it in our list.
1545          *
1546          * NOTE:  This search is definitely not optimized.  Once its doing
1547          *        the "right thing" we'll optimize it for efficiency if
1548          *        necessary */
1549
1550         /* Search for this entry in the list and update it if it is
1551          * already there. */
1552
1553         spin_lock_irqsave(&ieee->lock, flags);
1554
1555         list_for_each_entry(target, &ieee->network_list, list) {
1556                 if (is_same_network(target, &network))
1557                         break;
1558
1559                 if ((oldest == NULL) ||
1560                     time_before(target->last_scanned, oldest->last_scanned))
1561                         oldest = target;
1562         }
1563
1564         /* If we didn't find a match, then get a new network slot to initialize
1565          * with this beacon's information */
1566         if (&target->list == &ieee->network_list) {
1567                 if (list_empty(&ieee->network_free_list)) {
1568                         /* If there are no more slots, expire the oldest */
1569                         list_del(&oldest->list);
1570                         target = oldest;
1571                         LIBIPW_DEBUG_SCAN("Expired '%*pE' (%pM) from network list.\n",
1572                                           target->ssid_len, target->ssid,
1573                                           target->bssid);
1574                 } else {
1575                         /* Otherwise just pull from the free list */
1576                         target = list_entry(ieee->network_free_list.next,
1577                                             struct libipw_network, list);
1578                         list_del(ieee->network_free_list.next);
1579                 }
1580
1581 #ifdef CONFIG_LIBIPW_DEBUG
1582                 LIBIPW_DEBUG_SCAN("Adding '%*pE' (%pM) via %s.\n",
1583                                   network.ssid_len, network.ssid,
1584                                   network.bssid,
1585                                   is_beacon(beacon->header.frame_ctl) ?
1586                                   "BEACON" : "PROBE RESPONSE");
1587 #endif
1588                 memcpy(target, &network, sizeof(*target));
1589                 list_add_tail(&target->list, &ieee->network_list);
1590         } else {
1591                 LIBIPW_DEBUG_SCAN("Updating '%*pE' (%pM) via %s.\n",
1592                                   target->ssid_len, target->ssid,
1593                                   target->bssid,
1594                                   is_beacon(beacon->header.frame_ctl) ?
1595                                   "BEACON" : "PROBE RESPONSE");
1596                 update_network(target, &network);
1597         }
1598
1599         spin_unlock_irqrestore(&ieee->lock, flags);
1600
1601         if (is_beacon(beacon->header.frame_ctl)) {
1602                 if (ieee->handle_beacon != NULL)
1603                         ieee->handle_beacon(dev, beacon, target);
1604         } else {
1605                 if (ieee->handle_probe_response != NULL)
1606                         ieee->handle_probe_response(dev, beacon, target);
1607         }
1608 }
1609
1610 void libipw_rx_mgt(struct libipw_device *ieee,
1611                       struct libipw_hdr_4addr *header,
1612                       struct libipw_rx_stats *stats)
1613 {
1614         switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
1615         case IEEE80211_STYPE_ASSOC_RESP:
1616                 LIBIPW_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n",
1617                                      WLAN_FC_GET_STYPE(le16_to_cpu
1618                                                        (header->frame_ctl)));
1619                 libipw_handle_assoc_resp(ieee,
1620                                             (struct libipw_assoc_response *)
1621                                             header, stats);
1622                 break;
1623
1624         case IEEE80211_STYPE_REASSOC_RESP:
1625                 LIBIPW_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n",
1626                                      WLAN_FC_GET_STYPE(le16_to_cpu
1627                                                        (header->frame_ctl)));
1628                 break;
1629
1630         case IEEE80211_STYPE_PROBE_REQ:
1631                 LIBIPW_DEBUG_MGMT("received auth (%d)\n",
1632                                      WLAN_FC_GET_STYPE(le16_to_cpu
1633                                                        (header->frame_ctl)));
1634
1635                 if (ieee->handle_probe_request != NULL)
1636                         ieee->handle_probe_request(ieee->dev,
1637                                                    (struct
1638                                                     libipw_probe_request *)
1639                                                    header, stats);
1640                 break;
1641
1642         case IEEE80211_STYPE_PROBE_RESP:
1643                 LIBIPW_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
1644                                      WLAN_FC_GET_STYPE(le16_to_cpu
1645                                                        (header->frame_ctl)));
1646                 LIBIPW_DEBUG_SCAN("Probe response\n");
1647                 libipw_process_probe_response(ieee,
1648                                                  (struct
1649                                                   libipw_probe_response *)
1650                                                  header, stats);
1651                 break;
1652
1653         case IEEE80211_STYPE_BEACON:
1654                 LIBIPW_DEBUG_MGMT("received BEACON (%d)\n",
1655                                      WLAN_FC_GET_STYPE(le16_to_cpu
1656                                                        (header->frame_ctl)));
1657                 LIBIPW_DEBUG_SCAN("Beacon\n");
1658                 libipw_process_probe_response(ieee,
1659                                                  (struct
1660                                                   libipw_probe_response *)
1661                                                  header, stats);
1662                 break;
1663         case IEEE80211_STYPE_AUTH:
1664
1665                 LIBIPW_DEBUG_MGMT("received auth (%d)\n",
1666                                      WLAN_FC_GET_STYPE(le16_to_cpu
1667                                                        (header->frame_ctl)));
1668
1669                 if (ieee->handle_auth != NULL)
1670                         ieee->handle_auth(ieee->dev,
1671                                           (struct libipw_auth *)header);
1672                 break;
1673
1674         case IEEE80211_STYPE_DISASSOC:
1675                 if (ieee->handle_disassoc != NULL)
1676                         ieee->handle_disassoc(ieee->dev,
1677                                               (struct libipw_disassoc *)
1678                                               header);
1679                 break;
1680
1681         case IEEE80211_STYPE_ACTION:
1682                 LIBIPW_DEBUG_MGMT("ACTION\n");
1683                 if (ieee->handle_action)
1684                         ieee->handle_action(ieee->dev,
1685                                             (struct libipw_action *)
1686                                             header, stats);
1687                 break;
1688
1689         case IEEE80211_STYPE_REASSOC_REQ:
1690                 LIBIPW_DEBUG_MGMT("received reassoc (%d)\n",
1691                                      WLAN_FC_GET_STYPE(le16_to_cpu
1692                                                        (header->frame_ctl)));
1693
1694                 LIBIPW_DEBUG_MGMT("%s: LIBIPW_REASSOC_REQ received\n",
1695                                      ieee->dev->name);
1696                 if (ieee->handle_reassoc_request != NULL)
1697                         ieee->handle_reassoc_request(ieee->dev,
1698                                                     (struct libipw_reassoc_request *)
1699                                                      header);
1700                 break;
1701
1702         case IEEE80211_STYPE_ASSOC_REQ:
1703                 LIBIPW_DEBUG_MGMT("received assoc (%d)\n",
1704                                      WLAN_FC_GET_STYPE(le16_to_cpu
1705                                                        (header->frame_ctl)));
1706
1707                 LIBIPW_DEBUG_MGMT("%s: LIBIPW_ASSOC_REQ received\n",
1708                                      ieee->dev->name);
1709                 if (ieee->handle_assoc_request != NULL)
1710                         ieee->handle_assoc_request(ieee->dev);
1711                 break;
1712
1713         case IEEE80211_STYPE_DEAUTH:
1714                 LIBIPW_DEBUG_MGMT("DEAUTH\n");
1715                 if (ieee->handle_deauth != NULL)
1716                         ieee->handle_deauth(ieee->dev,
1717                                             (struct libipw_deauth *)
1718                                             header);
1719                 break;
1720         default:
1721                 LIBIPW_DEBUG_MGMT("received UNKNOWN (%d)\n",
1722                                      WLAN_FC_GET_STYPE(le16_to_cpu
1723                                                        (header->frame_ctl)));
1724                 LIBIPW_DEBUG_MGMT("%s: Unknown management packet: %d\n",
1725                                      ieee->dev->name,
1726                                      WLAN_FC_GET_STYPE(le16_to_cpu
1727                                                        (header->frame_ctl)));
1728                 break;
1729         }
1730 }
1731
1732 EXPORT_SYMBOL_GPL(libipw_rx_any);
1733 EXPORT_SYMBOL(libipw_rx_mgt);
1734 EXPORT_SYMBOL(libipw_rx);