clocks: tegra12: Use static CPU-EMC co-relation
[linux-3.10.git] / drivers / net / wireless / ipw2x00 / libipw_rx.c
1 /*
2  * Original code based Host AP (software wireless LAN access point) driver
3  * for Intersil Prism2/2.5/3 - hostap.o module, common routines
4  *
5  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6  * <j@w1.fi>
7  * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
8  * Copyright (c) 2004-2005, Intel Corporation
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation. See README and COPYING for
13  * more details.
14  */
15
16 #include <linux/compiler.h>
17 #include <linux/errno.h>
18 #include <linux/if_arp.h>
19 #include <linux/in6.h>
20 #include <linux/gfp.h>
21 #include <linux/in.h>
22 #include <linux/ip.h>
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/netdevice.h>
26 #include <linux/proc_fs.h>
27 #include <linux/skbuff.h>
28 #include <linux/tcp.h>
29 #include <linux/types.h>
30 #include <linux/wireless.h>
31 #include <linux/etherdevice.h>
32 #include <asm/uaccess.h>
33 #include <linux/ctype.h>
34
35 #include <net/lib80211.h>
36
37 #include "libipw.h"
38
39 static void libipw_monitor_rx(struct libipw_device *ieee,
40                                         struct sk_buff *skb,
41                                         struct libipw_rx_stats *rx_stats)
42 {
43         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
44         u16 fc = le16_to_cpu(hdr->frame_control);
45
46         skb->dev = ieee->dev;
47         skb_reset_mac_header(skb);
48         skb_pull(skb, libipw_get_hdrlen(fc));
49         skb->pkt_type = PACKET_OTHERHOST;
50         skb->protocol = htons(ETH_P_80211_RAW);
51         memset(skb->cb, 0, sizeof(skb->cb));
52         netif_rx(skb);
53 }
54
55 /* Called only as a tasklet (software IRQ) */
56 static struct libipw_frag_entry *libipw_frag_cache_find(struct
57                                                               libipw_device
58                                                               *ieee,
59                                                               unsigned int seq,
60                                                               unsigned int frag,
61                                                               u8 * src,
62                                                               u8 * dst)
63 {
64         struct libipw_frag_entry *entry;
65         int i;
66
67         for (i = 0; i < LIBIPW_FRAG_CACHE_LEN; i++) {
68                 entry = &ieee->frag_cache[i];
69                 if (entry->skb != NULL &&
70                     time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
71                         LIBIPW_DEBUG_FRAG("expiring fragment cache entry "
72                                              "seq=%u last_frag=%u\n",
73                                              entry->seq, entry->last_frag);
74                         dev_kfree_skb_any(entry->skb);
75                         entry->skb = NULL;
76                 }
77
78                 if (entry->skb != NULL && entry->seq == seq &&
79                     (entry->last_frag + 1 == frag || frag == -1) &&
80                     ether_addr_equal(entry->src_addr, src) &&
81                     ether_addr_equal(entry->dst_addr, dst))
82                         return entry;
83         }
84
85         return NULL;
86 }
87
88 /* Called only as a tasklet (software IRQ) */
89 static struct sk_buff *libipw_frag_cache_get(struct libipw_device *ieee,
90                                                 struct libipw_hdr_4addr *hdr)
91 {
92         struct sk_buff *skb = NULL;
93         u16 sc;
94         unsigned int frag, seq;
95         struct libipw_frag_entry *entry;
96
97         sc = le16_to_cpu(hdr->seq_ctl);
98         frag = WLAN_GET_SEQ_FRAG(sc);
99         seq = WLAN_GET_SEQ_SEQ(sc);
100
101         if (frag == 0) {
102                 /* Reserve enough space to fit maximum frame length */
103                 skb = dev_alloc_skb(ieee->dev->mtu +
104                                     sizeof(struct libipw_hdr_4addr) +
105                                     8 /* LLC */  +
106                                     2 /* alignment */  +
107                                     8 /* WEP */  + ETH_ALEN /* WDS */ );
108                 if (skb == NULL)
109                         return NULL;
110
111                 entry = &ieee->frag_cache[ieee->frag_next_idx];
112                 ieee->frag_next_idx++;
113                 if (ieee->frag_next_idx >= LIBIPW_FRAG_CACHE_LEN)
114                         ieee->frag_next_idx = 0;
115
116                 if (entry->skb != NULL)
117                         dev_kfree_skb_any(entry->skb);
118
119                 entry->first_frag_time = jiffies;
120                 entry->seq = seq;
121                 entry->last_frag = frag;
122                 entry->skb = skb;
123                 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
124                 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
125         } else {
126                 /* received a fragment of a frame for which the head fragment
127                  * should have already been received */
128                 entry = libipw_frag_cache_find(ieee, seq, frag, hdr->addr2,
129                                                   hdr->addr1);
130                 if (entry != NULL) {
131                         entry->last_frag = frag;
132                         skb = entry->skb;
133                 }
134         }
135
136         return skb;
137 }
138
139 /* Called only as a tasklet (software IRQ) */
140 static int libipw_frag_cache_invalidate(struct libipw_device *ieee,
141                                            struct libipw_hdr_4addr *hdr)
142 {
143         u16 sc;
144         unsigned int seq;
145         struct libipw_frag_entry *entry;
146
147         sc = le16_to_cpu(hdr->seq_ctl);
148         seq = WLAN_GET_SEQ_SEQ(sc);
149
150         entry = libipw_frag_cache_find(ieee, seq, -1, hdr->addr2,
151                                           hdr->addr1);
152
153         if (entry == NULL) {
154                 LIBIPW_DEBUG_FRAG("could not invalidate fragment cache "
155                                      "entry (seq=%u)\n", seq);
156                 return -1;
157         }
158
159         entry->skb = NULL;
160         return 0;
161 }
162
163 #ifdef NOT_YET
164 /* libipw_rx_frame_mgtmt
165  *
166  * Responsible for handling management control frames
167  *
168  * Called by libipw_rx */
169 static int
170 libipw_rx_frame_mgmt(struct libipw_device *ieee, struct sk_buff *skb,
171                         struct libipw_rx_stats *rx_stats, u16 type,
172                         u16 stype)
173 {
174         if (ieee->iw_mode == IW_MODE_MASTER) {
175                 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
176                        ieee->dev->name);
177                 return 0;
178 /*
179   hostap_update_sta_ps(ieee, (struct hostap_libipw_hdr_4addr *)
180   skb->data);*/
181         }
182
183         if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) {
184                 if (stype == WLAN_FC_STYPE_BEACON &&
185                     ieee->iw_mode == IW_MODE_MASTER) {
186                         struct sk_buff *skb2;
187                         /* Process beacon frames also in kernel driver to
188                          * update STA(AP) table statistics */
189                         skb2 = skb_clone(skb, GFP_ATOMIC);
190                         if (skb2)
191                                 hostap_rx(skb2->dev, skb2, rx_stats);
192                 }
193
194                 /* send management frames to the user space daemon for
195                  * processing */
196                 ieee->apdevstats.rx_packets++;
197                 ieee->apdevstats.rx_bytes += skb->len;
198                 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
199                 return 0;
200         }
201
202         if (ieee->iw_mode == IW_MODE_MASTER) {
203                 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
204                         printk(KERN_DEBUG "%s: unknown management frame "
205                                "(type=0x%02x, stype=0x%02x) dropped\n",
206                                skb->dev->name, type, stype);
207                         return -1;
208                 }
209
210                 hostap_rx(skb->dev, skb, rx_stats);
211                 return 0;
212         }
213
214         printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
215                "received in non-Host AP mode\n", skb->dev->name);
216         return -1;
217 }
218 #endif
219
220 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
221 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
222 static unsigned char libipw_rfc1042_header[] =
223     { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
224
225 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
226 static unsigned char libipw_bridge_tunnel_header[] =
227     { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
228 /* No encapsulation header if EtherType < 0x600 (=length) */
229
230 /* Called by libipw_rx_frame_decrypt */
231 static int libipw_is_eapol_frame(struct libipw_device *ieee,
232                                     struct sk_buff *skb)
233 {
234         struct net_device *dev = ieee->dev;
235         u16 fc, ethertype;
236         struct libipw_hdr_3addr *hdr;
237         u8 *pos;
238
239         if (skb->len < 24)
240                 return 0;
241
242         hdr = (struct libipw_hdr_3addr *)skb->data;
243         fc = le16_to_cpu(hdr->frame_ctl);
244
245         /* check that the frame is unicast frame to us */
246         if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
247             IEEE80211_FCTL_TODS &&
248             ether_addr_equal(hdr->addr1, dev->dev_addr) &&
249             ether_addr_equal(hdr->addr3, dev->dev_addr)) {
250                 /* ToDS frame with own addr BSSID and DA */
251         } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
252                    IEEE80211_FCTL_FROMDS &&
253                    ether_addr_equal(hdr->addr1, dev->dev_addr)) {
254                 /* FromDS frame with own addr as DA */
255         } else
256                 return 0;
257
258         if (skb->len < 24 + 8)
259                 return 0;
260
261         /* check for port access entity Ethernet type */
262         pos = skb->data + 24;
263         ethertype = (pos[6] << 8) | pos[7];
264         if (ethertype == ETH_P_PAE)
265                 return 1;
266
267         return 0;
268 }
269
270 /* Called only as a tasklet (software IRQ), by libipw_rx */
271 static int
272 libipw_rx_frame_decrypt(struct libipw_device *ieee, struct sk_buff *skb,
273                            struct lib80211_crypt_data *crypt)
274 {
275         struct libipw_hdr_3addr *hdr;
276         int res, hdrlen;
277
278         if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
279                 return 0;
280
281         hdr = (struct libipw_hdr_3addr *)skb->data;
282         hdrlen = libipw_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
283
284         atomic_inc(&crypt->refcnt);
285         res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
286         atomic_dec(&crypt->refcnt);
287         if (res < 0) {
288                 LIBIPW_DEBUG_DROP("decryption failed (SA=%pM) res=%d\n",
289                                      hdr->addr2, res);
290                 if (res == -2)
291                         LIBIPW_DEBUG_DROP("Decryption failed ICV "
292                                              "mismatch (key %d)\n",
293                                              skb->data[hdrlen + 3] >> 6);
294                 ieee->ieee_stats.rx_discards_undecryptable++;
295                 return -1;
296         }
297
298         return res;
299 }
300
301 /* Called only as a tasklet (software IRQ), by libipw_rx */
302 static int
303 libipw_rx_frame_decrypt_msdu(struct libipw_device *ieee,
304                                 struct sk_buff *skb, int keyidx,
305                                 struct lib80211_crypt_data *crypt)
306 {
307         struct libipw_hdr_3addr *hdr;
308         int res, hdrlen;
309
310         if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
311                 return 0;
312
313         hdr = (struct libipw_hdr_3addr *)skb->data;
314         hdrlen = libipw_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
315
316         atomic_inc(&crypt->refcnt);
317         res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
318         atomic_dec(&crypt->refcnt);
319         if (res < 0) {
320                 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
321                        " (SA=%pM keyidx=%d)\n", ieee->dev->name, hdr->addr2,
322                        keyidx);
323                 return -1;
324         }
325
326         return 0;
327 }
328
329 /* All received frames are sent to this function. @skb contains the frame in
330  * IEEE 802.11 format, i.e., in the format it was sent over air.
331  * This function is called only as a tasklet (software IRQ). */
332 int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb,
333                  struct libipw_rx_stats *rx_stats)
334 {
335         struct net_device *dev = ieee->dev;
336         struct libipw_hdr_4addr *hdr;
337         size_t hdrlen;
338         u16 fc, type, stype, sc;
339         unsigned int frag;
340         u8 *payload;
341         u16 ethertype;
342 #ifdef NOT_YET
343         struct net_device *wds = NULL;
344         struct sk_buff *skb2 = NULL;
345         struct net_device *wds = NULL;
346         int frame_authorized = 0;
347         int from_assoc_ap = 0;
348         void *sta = NULL;
349 #endif
350         u8 dst[ETH_ALEN];
351         u8 src[ETH_ALEN];
352         struct lib80211_crypt_data *crypt = NULL;
353         int keyidx = 0;
354         int can_be_decrypted = 0;
355
356         hdr = (struct libipw_hdr_4addr *)skb->data;
357         if (skb->len < 10) {
358                 printk(KERN_INFO "%s: SKB length < 10\n", dev->name);
359                 goto rx_dropped;
360         }
361
362         fc = le16_to_cpu(hdr->frame_ctl);
363         type = WLAN_FC_GET_TYPE(fc);
364         stype = WLAN_FC_GET_STYPE(fc);
365         sc = le16_to_cpu(hdr->seq_ctl);
366         frag = WLAN_GET_SEQ_FRAG(sc);
367         hdrlen = libipw_get_hdrlen(fc);
368
369         if (skb->len < hdrlen) {
370                 printk(KERN_INFO "%s: invalid SKB length %d\n",
371                         dev->name, skb->len);
372                 goto rx_dropped;
373         }
374
375         /* Put this code here so that we avoid duplicating it in all
376          * Rx paths. - Jean II */
377 #ifdef CONFIG_WIRELESS_EXT
378 #ifdef IW_WIRELESS_SPY          /* defined in iw_handler.h */
379         /* If spy monitoring on */
380         if (ieee->spy_data.spy_number > 0) {
381                 struct iw_quality wstats;
382
383                 wstats.updated = 0;
384                 if (rx_stats->mask & LIBIPW_STATMASK_RSSI) {
385                         wstats.level = rx_stats->signal;
386                         wstats.updated |= IW_QUAL_LEVEL_UPDATED;
387                 } else
388                         wstats.updated |= IW_QUAL_LEVEL_INVALID;
389
390                 if (rx_stats->mask & LIBIPW_STATMASK_NOISE) {
391                         wstats.noise = rx_stats->noise;
392                         wstats.updated |= IW_QUAL_NOISE_UPDATED;
393                 } else
394                         wstats.updated |= IW_QUAL_NOISE_INVALID;
395
396                 if (rx_stats->mask & LIBIPW_STATMASK_SIGNAL) {
397                         wstats.qual = rx_stats->signal;
398                         wstats.updated |= IW_QUAL_QUAL_UPDATED;
399                 } else
400                         wstats.updated |= IW_QUAL_QUAL_INVALID;
401
402                 /* Update spy records */
403                 wireless_spy_update(ieee->dev, hdr->addr2, &wstats);
404         }
405 #endif                          /* IW_WIRELESS_SPY */
406 #endif                          /* CONFIG_WIRELESS_EXT */
407
408 #ifdef NOT_YET
409         hostap_update_rx_stats(local->ap, hdr, rx_stats);
410 #endif
411
412         if (ieee->iw_mode == IW_MODE_MONITOR) {
413                 dev->stats.rx_packets++;
414                 dev->stats.rx_bytes += skb->len;
415                 libipw_monitor_rx(ieee, skb, rx_stats);
416                 return 1;
417         }
418
419         can_be_decrypted = (is_multicast_ether_addr(hdr->addr1) ||
420                             is_broadcast_ether_addr(hdr->addr2)) ?
421             ieee->host_mc_decrypt : ieee->host_decrypt;
422
423         if (can_be_decrypted) {
424                 if (skb->len >= hdrlen + 3) {
425                         /* Top two-bits of byte 3 are the key index */
426                         keyidx = skb->data[hdrlen + 3] >> 6;
427                 }
428
429                 /* ieee->crypt[] is WEP_KEY (4) in length.  Given that keyidx
430                  * is only allowed 2-bits of storage, no value of keyidx can
431                  * be provided via above code that would result in keyidx
432                  * being out of range */
433                 crypt = ieee->crypt_info.crypt[keyidx];
434
435 #ifdef NOT_YET
436                 sta = NULL;
437
438                 /* Use station specific key to override default keys if the
439                  * receiver address is a unicast address ("individual RA"). If
440                  * bcrx_sta_key parameter is set, station specific key is used
441                  * even with broad/multicast targets (this is against IEEE
442                  * 802.11, but makes it easier to use different keys with
443                  * stations that do not support WEP key mapping). */
444
445                 if (is_unicast_ether_addr(hdr->addr1) || local->bcrx_sta_key)
446                         (void)hostap_handle_sta_crypto(local, hdr, &crypt,
447                                                        &sta);
448 #endif
449
450                 /* allow NULL decrypt to indicate an station specific override
451                  * for default encryption */
452                 if (crypt && (crypt->ops == NULL ||
453                               crypt->ops->decrypt_mpdu == NULL))
454                         crypt = NULL;
455
456                 if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
457                         /* This seems to be triggered by some (multicast?)
458                          * frames from other than current BSS, so just drop the
459                          * frames silently instead of filling system log with
460                          * these reports. */
461                         LIBIPW_DEBUG_DROP("Decryption failed (not set)"
462                                              " (SA=%pM)\n", hdr->addr2);
463                         ieee->ieee_stats.rx_discards_undecryptable++;
464                         goto rx_dropped;
465                 }
466         }
467 #ifdef NOT_YET
468         if (type != WLAN_FC_TYPE_DATA) {
469                 if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH &&
470                     fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt &&
471                     (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) {
472                         printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
473                                "from %pM\n", dev->name, hdr->addr2);
474                         /* TODO: could inform hostapd about this so that it
475                          * could send auth failure report */
476                         goto rx_dropped;
477                 }
478
479                 if (libipw_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
480                         goto rx_dropped;
481                 else
482                         goto rx_exit;
483         }
484 #endif
485         /* drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.29) */
486         if (sc == ieee->prev_seq_ctl)
487                 goto rx_dropped;
488         else
489                 ieee->prev_seq_ctl = sc;
490
491         /* Data frame - extract src/dst addresses */
492         if (skb->len < LIBIPW_3ADDR_LEN)
493                 goto rx_dropped;
494
495         switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
496         case IEEE80211_FCTL_FROMDS:
497                 memcpy(dst, hdr->addr1, ETH_ALEN);
498                 memcpy(src, hdr->addr3, ETH_ALEN);
499                 break;
500         case IEEE80211_FCTL_TODS:
501                 memcpy(dst, hdr->addr3, ETH_ALEN);
502                 memcpy(src, hdr->addr2, ETH_ALEN);
503                 break;
504         case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
505                 if (skb->len < LIBIPW_4ADDR_LEN)
506                         goto rx_dropped;
507                 memcpy(dst, hdr->addr3, ETH_ALEN);
508                 memcpy(src, hdr->addr4, ETH_ALEN);
509                 break;
510         case 0:
511                 memcpy(dst, hdr->addr1, ETH_ALEN);
512                 memcpy(src, hdr->addr2, ETH_ALEN);
513                 break;
514         }
515
516 #ifdef NOT_YET
517         if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
518                 goto rx_dropped;
519         if (wds) {
520                 skb->dev = dev = wds;
521                 stats = hostap_get_stats(dev);
522         }
523
524         if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
525             (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
526             IEEE80211_FCTL_FROMDS && ieee->stadev &&
527             ether_addr_equal(hdr->addr2, ieee->assoc_ap_addr)) {
528                 /* Frame from BSSID of the AP for which we are a client */
529                 skb->dev = dev = ieee->stadev;
530                 stats = hostap_get_stats(dev);
531                 from_assoc_ap = 1;
532         }
533 #endif
534
535 #ifdef NOT_YET
536         if ((ieee->iw_mode == IW_MODE_MASTER ||
537              ieee->iw_mode == IW_MODE_REPEAT) && !from_assoc_ap) {
538                 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
539                                              wds != NULL)) {
540                 case AP_RX_CONTINUE_NOT_AUTHORIZED:
541                         frame_authorized = 0;
542                         break;
543                 case AP_RX_CONTINUE:
544                         frame_authorized = 1;
545                         break;
546                 case AP_RX_DROP:
547                         goto rx_dropped;
548                 case AP_RX_EXIT:
549                         goto rx_exit;
550                 }
551         }
552 #endif
553
554         /* Nullfunc frames may have PS-bit set, so they must be passed to
555          * hostap_handle_sta_rx() before being dropped here. */
556
557         stype &= ~IEEE80211_STYPE_QOS_DATA;
558
559         if (stype != IEEE80211_STYPE_DATA &&
560             stype != IEEE80211_STYPE_DATA_CFACK &&
561             stype != IEEE80211_STYPE_DATA_CFPOLL &&
562             stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
563                 if (stype != IEEE80211_STYPE_NULLFUNC)
564                         LIBIPW_DEBUG_DROP("RX: dropped data frame "
565                                              "with no data (type=0x%02x, "
566                                              "subtype=0x%02x, len=%d)\n",
567                                              type, stype, skb->len);
568                 goto rx_dropped;
569         }
570
571         /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
572
573         if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted &&
574             (keyidx = libipw_rx_frame_decrypt(ieee, skb, crypt)) < 0)
575                 goto rx_dropped;
576
577         hdr = (struct libipw_hdr_4addr *)skb->data;
578
579         /* skb: hdr + (possibly fragmented) plaintext payload */
580         // PR: FIXME: hostap has additional conditions in the "if" below:
581         // ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
582         if ((frag != 0) || (fc & IEEE80211_FCTL_MOREFRAGS)) {
583                 int flen;
584                 struct sk_buff *frag_skb = libipw_frag_cache_get(ieee, hdr);
585                 LIBIPW_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
586
587                 if (!frag_skb) {
588                         LIBIPW_DEBUG(LIBIPW_DL_RX | LIBIPW_DL_FRAG,
589                                         "Rx cannot get skb from fragment "
590                                         "cache (morefrag=%d seq=%u frag=%u)\n",
591                                         (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
592                                         WLAN_GET_SEQ_SEQ(sc), frag);
593                         goto rx_dropped;
594                 }
595
596                 flen = skb->len;
597                 if (frag != 0)
598                         flen -= hdrlen;
599
600                 if (frag_skb->tail + flen > frag_skb->end) {
601                         printk(KERN_WARNING "%s: host decrypted and "
602                                "reassembled frame did not fit skb\n",
603                                dev->name);
604                         libipw_frag_cache_invalidate(ieee, hdr);
605                         goto rx_dropped;
606                 }
607
608                 if (frag == 0) {
609                         /* copy first fragment (including full headers) into
610                          * beginning of the fragment cache skb */
611                         skb_copy_from_linear_data(skb, skb_put(frag_skb, flen), flen);
612                 } else {
613                         /* append frame payload to the end of the fragment
614                          * cache skb */
615                         skb_copy_from_linear_data_offset(skb, hdrlen,
616                                       skb_put(frag_skb, flen), flen);
617                 }
618                 dev_kfree_skb_any(skb);
619                 skb = NULL;
620
621                 if (fc & IEEE80211_FCTL_MOREFRAGS) {
622                         /* more fragments expected - leave the skb in fragment
623                          * cache for now; it will be delivered to upper layers
624                          * after all fragments have been received */
625                         goto rx_exit;
626                 }
627
628                 /* this was the last fragment and the frame will be
629                  * delivered, so remove skb from fragment cache */
630                 skb = frag_skb;
631                 hdr = (struct libipw_hdr_4addr *)skb->data;
632                 libipw_frag_cache_invalidate(ieee, hdr);
633         }
634
635         /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
636          * encrypted/authenticated */
637         if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted &&
638             libipw_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
639                 goto rx_dropped;
640
641         hdr = (struct libipw_hdr_4addr *)skb->data;
642         if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) {
643                 if (            /*ieee->ieee802_1x && */
644                            libipw_is_eapol_frame(ieee, skb)) {
645                         /* pass unencrypted EAPOL frames even if encryption is
646                          * configured */
647                 } else {
648                         LIBIPW_DEBUG_DROP("encryption configured, but RX "
649                                              "frame not encrypted (SA=%pM)\n",
650                                              hdr->addr2);
651                         goto rx_dropped;
652                 }
653         }
654
655         if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep &&
656             !libipw_is_eapol_frame(ieee, skb)) {
657                 LIBIPW_DEBUG_DROP("dropped unencrypted RX data "
658                                      "frame from %pM (drop_unencrypted=1)\n",
659                                      hdr->addr2);
660                 goto rx_dropped;
661         }
662
663         /* If the frame was decrypted in hardware, we may need to strip off
664          * any security data (IV, ICV, etc) that was left behind */
665         if (!can_be_decrypted && (fc & IEEE80211_FCTL_PROTECTED) &&
666             ieee->host_strip_iv_icv) {
667                 int trimlen = 0;
668
669                 /* Top two-bits of byte 3 are the key index */
670                 if (skb->len >= hdrlen + 3)
671                         keyidx = skb->data[hdrlen + 3] >> 6;
672
673                 /* To strip off any security data which appears before the
674                  * payload, we simply increase hdrlen (as the header gets
675                  * chopped off immediately below). For the security data which
676                  * appears after the payload, we use skb_trim. */
677
678                 switch (ieee->sec.encode_alg[keyidx]) {
679                 case SEC_ALG_WEP:
680                         /* 4 byte IV */
681                         hdrlen += 4;
682                         /* 4 byte ICV */
683                         trimlen = 4;
684                         break;
685                 case SEC_ALG_TKIP:
686                         /* 4 byte IV, 4 byte ExtIV */
687                         hdrlen += 8;
688                         /* 8 byte MIC, 4 byte ICV */
689                         trimlen = 12;
690                         break;
691                 case SEC_ALG_CCMP:
692                         /* 8 byte CCMP header */
693                         hdrlen += 8;
694                         /* 8 byte MIC */
695                         trimlen = 8;
696                         break;
697                 }
698
699                 if (skb->len < trimlen)
700                         goto rx_dropped;
701
702                 __skb_trim(skb, skb->len - trimlen);
703
704                 if (skb->len < hdrlen)
705                         goto rx_dropped;
706         }
707
708         /* skb: hdr + (possible reassembled) full plaintext payload */
709
710         payload = skb->data + hdrlen;
711         ethertype = (payload[6] << 8) | payload[7];
712
713 #ifdef NOT_YET
714         /* If IEEE 802.1X is used, check whether the port is authorized to send
715          * the received frame. */
716         if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) {
717                 if (ethertype == ETH_P_PAE) {
718                         printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n",
719                                dev->name);
720                         if (ieee->hostapd && ieee->apdev) {
721                                 /* Send IEEE 802.1X frames to the user
722                                  * space daemon for processing */
723                                 prism2_rx_80211(ieee->apdev, skb, rx_stats,
724                                                 PRISM2_RX_MGMT);
725                                 ieee->apdevstats.rx_packets++;
726                                 ieee->apdevstats.rx_bytes += skb->len;
727                                 goto rx_exit;
728                         }
729                 } else if (!frame_authorized) {
730                         printk(KERN_DEBUG "%s: dropped frame from "
731                                "unauthorized port (IEEE 802.1X): "
732                                "ethertype=0x%04x\n", dev->name, ethertype);
733                         goto rx_dropped;
734                 }
735         }
736 #endif
737
738         /* convert hdr + possible LLC headers into Ethernet header */
739         if (skb->len - hdrlen >= 8 &&
740             ((memcmp(payload, libipw_rfc1042_header, SNAP_SIZE) == 0 &&
741               ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
742              memcmp(payload, libipw_bridge_tunnel_header, SNAP_SIZE) == 0)) {
743                 /* remove RFC1042 or Bridge-Tunnel encapsulation and
744                  * replace EtherType */
745                 skb_pull(skb, hdrlen + SNAP_SIZE);
746                 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
747                 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
748         } else {
749                 __be16 len;
750                 /* Leave Ethernet header part of hdr and full payload */
751                 skb_pull(skb, hdrlen);
752                 len = htons(skb->len);
753                 memcpy(skb_push(skb, 2), &len, 2);
754                 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
755                 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
756         }
757
758 #ifdef NOT_YET
759         if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
760                     IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
761                 /* Non-standard frame: get addr4 from its bogus location after
762                  * the payload */
763                 skb_copy_to_linear_data_offset(skb, ETH_ALEN,
764                                                skb->data + skb->len - ETH_ALEN,
765                                                ETH_ALEN);
766                 skb_trim(skb, skb->len - ETH_ALEN);
767         }
768 #endif
769
770         dev->stats.rx_packets++;
771         dev->stats.rx_bytes += skb->len;
772
773 #ifdef NOT_YET
774         if (ieee->iw_mode == IW_MODE_MASTER && !wds && ieee->ap->bridge_packets) {
775                 if (is_multicast_ether_addr(dst)) {
776                         /* copy multicast frame both to the higher layers and
777                          * to the wireless media */
778                         ieee->ap->bridged_multicast++;
779                         skb2 = skb_clone(skb, GFP_ATOMIC);
780                         if (skb2 == NULL)
781                                 printk(KERN_DEBUG "%s: skb_clone failed for "
782                                        "multicast frame\n", dev->name);
783                 } else if (hostap_is_sta_assoc(ieee->ap, dst)) {
784                         /* send frame directly to the associated STA using
785                          * wireless media and not passing to higher layers */
786                         ieee->ap->bridged_unicast++;
787                         skb2 = skb;
788                         skb = NULL;
789                 }
790         }
791
792         if (skb2 != NULL) {
793                 /* send to wireless media */
794                 skb2->dev = dev;
795                 skb2->protocol = htons(ETH_P_802_3);
796                 skb_reset_mac_header(skb2);
797                 skb_reset_network_header(skb2);
798                 /* skb2->network_header += ETH_HLEN; */
799                 dev_queue_xmit(skb2);
800         }
801 #endif
802
803         if (skb) {
804                 skb->protocol = eth_type_trans(skb, dev);
805                 memset(skb->cb, 0, sizeof(skb->cb));
806                 skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
807                 if (netif_rx(skb) == NET_RX_DROP) {
808                         /* netif_rx always succeeds, but it might drop
809                          * the packet.  If it drops the packet, we log that
810                          * in our stats. */
811                         LIBIPW_DEBUG_DROP
812                             ("RX: netif_rx dropped the packet\n");
813                         dev->stats.rx_dropped++;
814                 }
815         }
816
817       rx_exit:
818 #ifdef NOT_YET
819         if (sta)
820                 hostap_handle_sta_release(sta);
821 #endif
822         return 1;
823
824       rx_dropped:
825         dev->stats.rx_dropped++;
826
827         /* Returning 0 indicates to caller that we have not handled the SKB--
828          * so it is still allocated and can be used again by underlying
829          * hardware as a DMA target */
830         return 0;
831 }
832
833 /* Filter out unrelated packets, call libipw_rx[_mgt]
834  * This function takes over the skb, it should not be used again after calling
835  * this function. */
836 void libipw_rx_any(struct libipw_device *ieee,
837                      struct sk_buff *skb, struct libipw_rx_stats *stats)
838 {
839         struct libipw_hdr_4addr *hdr;
840         int is_packet_for_us;
841         u16 fc;
842
843         if (ieee->iw_mode == IW_MODE_MONITOR) {
844                 if (!libipw_rx(ieee, skb, stats))
845                         dev_kfree_skb_irq(skb);
846                 return;
847         }
848
849         if (skb->len < sizeof(struct ieee80211_hdr))
850                 goto drop_free;
851
852         hdr = (struct libipw_hdr_4addr *)skb->data;
853         fc = le16_to_cpu(hdr->frame_ctl);
854
855         if ((fc & IEEE80211_FCTL_VERS) != 0)
856                 goto drop_free;
857
858         switch (fc & IEEE80211_FCTL_FTYPE) {
859         case IEEE80211_FTYPE_MGMT:
860                 if (skb->len < sizeof(struct libipw_hdr_3addr))
861                         goto drop_free;
862                 libipw_rx_mgt(ieee, hdr, stats);
863                 dev_kfree_skb_irq(skb);
864                 return;
865         case IEEE80211_FTYPE_DATA:
866                 break;
867         case IEEE80211_FTYPE_CTL:
868                 return;
869         default:
870                 return;
871         }
872
873         is_packet_for_us = 0;
874         switch (ieee->iw_mode) {
875         case IW_MODE_ADHOC:
876                 /* our BSS and not from/to DS */
877                 if (memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) == 0)
878                 if ((fc & (IEEE80211_FCTL_TODS+IEEE80211_FCTL_FROMDS)) == 0) {
879                         /* promisc: get all */
880                         if (ieee->dev->flags & IFF_PROMISC)
881                                 is_packet_for_us = 1;
882                         /* to us */
883                         else if (memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN) == 0)
884                                 is_packet_for_us = 1;
885                         /* mcast */
886                         else if (is_multicast_ether_addr(hdr->addr1))
887                                 is_packet_for_us = 1;
888                 }
889                 break;
890         case IW_MODE_INFRA:
891                 /* our BSS (== from our AP) and from DS */
892                 if (memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) == 0)
893                 if ((fc & (IEEE80211_FCTL_TODS+IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS) {
894                         /* promisc: get all */
895                         if (ieee->dev->flags & IFF_PROMISC)
896                                 is_packet_for_us = 1;
897                         /* to us */
898                         else if (memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN) == 0)
899                                 is_packet_for_us = 1;
900                         /* mcast */
901                         else if (is_multicast_ether_addr(hdr->addr1)) {
902                                 /* not our own packet bcasted from AP */
903                                 if (memcmp(hdr->addr3, ieee->dev->dev_addr, ETH_ALEN))
904                                         is_packet_for_us = 1;
905                         }
906                 }
907                 break;
908         default:
909                 /* ? */
910                 break;
911         }
912
913         if (is_packet_for_us)
914                 if (!libipw_rx(ieee, skb, stats))
915                         dev_kfree_skb_irq(skb);
916         return;
917
918 drop_free:
919         dev_kfree_skb_irq(skb);
920         ieee->dev->stats.rx_dropped++;
921 }
922
923 #define MGMT_FRAME_FIXED_PART_LENGTH            0x24
924
925 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
926
927 /*
928 * Make the structure we read from the beacon packet to have
929 * the right values
930 */
931 static int libipw_verify_qos_info(struct libipw_qos_information_element
932                                      *info_element, int sub_type)
933 {
934
935         if (info_element->qui_subtype != sub_type)
936                 return -1;
937         if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
938                 return -1;
939         if (info_element->qui_type != QOS_OUI_TYPE)
940                 return -1;
941         if (info_element->version != QOS_VERSION_1)
942                 return -1;
943
944         return 0;
945 }
946
947 /*
948  * Parse a QoS parameter element
949  */
950 static int libipw_read_qos_param_element(struct libipw_qos_parameter_info
951                                             *element_param, struct libipw_info_element
952                                             *info_element)
953 {
954         int ret = 0;
955         u16 size = sizeof(struct libipw_qos_parameter_info) - 2;
956
957         if ((info_element == NULL) || (element_param == NULL))
958                 return -1;
959
960         if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
961                 memcpy(element_param->info_element.qui, info_element->data,
962                        info_element->len);
963                 element_param->info_element.elementID = info_element->id;
964                 element_param->info_element.length = info_element->len;
965         } else
966                 ret = -1;
967         if (ret == 0)
968                 ret = libipw_verify_qos_info(&element_param->info_element,
969                                                 QOS_OUI_PARAM_SUB_TYPE);
970         return ret;
971 }
972
973 /*
974  * Parse a QoS information element
975  */
976 static int libipw_read_qos_info_element(struct
977                                            libipw_qos_information_element
978                                            *element_info, struct libipw_info_element
979                                            *info_element)
980 {
981         int ret = 0;
982         u16 size = sizeof(struct libipw_qos_information_element) - 2;
983
984         if (element_info == NULL)
985                 return -1;
986         if (info_element == NULL)
987                 return -1;
988
989         if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
990                 memcpy(element_info->qui, info_element->data,
991                        info_element->len);
992                 element_info->elementID = info_element->id;
993                 element_info->length = info_element->len;
994         } else
995                 ret = -1;
996
997         if (ret == 0)
998                 ret = libipw_verify_qos_info(element_info,
999                                                 QOS_OUI_INFO_SUB_TYPE);
1000         return ret;
1001 }
1002
1003 /*
1004  * Write QoS parameters from the ac parameters.
1005  */
1006 static int libipw_qos_convert_ac_to_parameters(struct
1007                                                   libipw_qos_parameter_info
1008                                                   *param_elm, struct
1009                                                   libipw_qos_parameters
1010                                                   *qos_param)
1011 {
1012         int rc = 0;
1013         int i;
1014         struct libipw_qos_ac_parameter *ac_params;
1015         u32 txop;
1016         u8 cw_min;
1017         u8 cw_max;
1018
1019         for (i = 0; i < QOS_QUEUE_NUM; i++) {
1020                 ac_params = &(param_elm->ac_params_record[i]);
1021
1022                 qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F;
1023                 qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2;
1024
1025                 cw_min = ac_params->ecw_min_max & 0x0F;
1026                 qos_param->cw_min[i] = cpu_to_le16((1 << cw_min) - 1);
1027
1028                 cw_max = (ac_params->ecw_min_max & 0xF0) >> 4;
1029                 qos_param->cw_max[i] = cpu_to_le16((1 << cw_max) - 1);
1030
1031                 qos_param->flag[i] =
1032                     (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1033
1034                 txop = le16_to_cpu(ac_params->tx_op_limit) * 32;
1035                 qos_param->tx_op_limit[i] = cpu_to_le16(txop);
1036         }
1037         return rc;
1038 }
1039
1040 /*
1041  * we have a generic data element which it may contain QoS information or
1042  * parameters element. check the information element length to decide
1043  * which type to read
1044  */
1045 static int libipw_parse_qos_info_param_IE(struct libipw_info_element
1046                                              *info_element,
1047                                              struct libipw_network *network)
1048 {
1049         int rc = 0;
1050         struct libipw_qos_parameters *qos_param = NULL;
1051         struct libipw_qos_information_element qos_info_element;
1052
1053         rc = libipw_read_qos_info_element(&qos_info_element, info_element);
1054
1055         if (rc == 0) {
1056                 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1057                 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1058         } else {
1059                 struct libipw_qos_parameter_info param_element;
1060
1061                 rc = libipw_read_qos_param_element(&param_element,
1062                                                       info_element);
1063                 if (rc == 0) {
1064                         qos_param = &(network->qos_data.parameters);
1065                         libipw_qos_convert_ac_to_parameters(&param_element,
1066                                                                qos_param);
1067                         network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1068                         network->qos_data.param_count =
1069                             param_element.info_element.ac_info & 0x0F;
1070                 }
1071         }
1072
1073         if (rc == 0) {
1074                 LIBIPW_DEBUG_QOS("QoS is supported\n");
1075                 network->qos_data.supported = 1;
1076         }
1077         return rc;
1078 }
1079
1080 #ifdef CONFIG_LIBIPW_DEBUG
1081 #define MFIE_STRING(x) case WLAN_EID_ ##x: return #x
1082
1083 static const char *get_info_element_string(u16 id)
1084 {
1085         switch (id) {
1086                 MFIE_STRING(SSID);
1087                 MFIE_STRING(SUPP_RATES);
1088                 MFIE_STRING(FH_PARAMS);
1089                 MFIE_STRING(DS_PARAMS);
1090                 MFIE_STRING(CF_PARAMS);
1091                 MFIE_STRING(TIM);
1092                 MFIE_STRING(IBSS_PARAMS);
1093                 MFIE_STRING(COUNTRY);
1094                 MFIE_STRING(HP_PARAMS);
1095                 MFIE_STRING(HP_TABLE);
1096                 MFIE_STRING(REQUEST);
1097                 MFIE_STRING(CHALLENGE);
1098                 MFIE_STRING(PWR_CONSTRAINT);
1099                 MFIE_STRING(PWR_CAPABILITY);
1100                 MFIE_STRING(TPC_REQUEST);
1101                 MFIE_STRING(TPC_REPORT);
1102                 MFIE_STRING(SUPPORTED_CHANNELS);
1103                 MFIE_STRING(CHANNEL_SWITCH);
1104                 MFIE_STRING(MEASURE_REQUEST);
1105                 MFIE_STRING(MEASURE_REPORT);
1106                 MFIE_STRING(QUIET);
1107                 MFIE_STRING(IBSS_DFS);
1108                 MFIE_STRING(ERP_INFO);
1109                 MFIE_STRING(RSN);
1110                 MFIE_STRING(EXT_SUPP_RATES);
1111                 MFIE_STRING(VENDOR_SPECIFIC);
1112                 MFIE_STRING(QOS_PARAMETER);
1113         default:
1114                 return "UNKNOWN";
1115         }
1116 }
1117 #endif
1118
1119 static int libipw_parse_info_param(struct libipw_info_element
1120                                       *info_element, u16 length,
1121                                       struct libipw_network *network)
1122 {
1123         DECLARE_SSID_BUF(ssid);
1124         u8 i;
1125 #ifdef CONFIG_LIBIPW_DEBUG
1126         char rates_str[64];
1127         char *p;
1128 #endif
1129
1130         while (length >= sizeof(*info_element)) {
1131                 if (sizeof(*info_element) + info_element->len > length) {
1132                         LIBIPW_DEBUG_MGMT("Info elem: parse failed: "
1133                                              "info_element->len + 2 > left : "
1134                                              "info_element->len+2=%zd left=%d, id=%d.\n",
1135                                              info_element->len +
1136                                              sizeof(*info_element),
1137                                              length, info_element->id);
1138                         /* We stop processing but don't return an error here
1139                          * because some misbehaviour APs break this rule. ie.
1140                          * Orinoco AP1000. */
1141                         break;
1142                 }
1143
1144                 switch (info_element->id) {
1145                 case WLAN_EID_SSID:
1146                         network->ssid_len = min(info_element->len,
1147                                                 (u8) IW_ESSID_MAX_SIZE);
1148                         memcpy(network->ssid, info_element->data,
1149                                network->ssid_len);
1150                         if (network->ssid_len < IW_ESSID_MAX_SIZE)
1151                                 memset(network->ssid + network->ssid_len, 0,
1152                                        IW_ESSID_MAX_SIZE - network->ssid_len);
1153
1154                         LIBIPW_DEBUG_MGMT("WLAN_EID_SSID: '%s' len=%d.\n",
1155                                              print_ssid(ssid, network->ssid,
1156                                                         network->ssid_len),
1157                                              network->ssid_len);
1158                         break;
1159
1160                 case WLAN_EID_SUPP_RATES:
1161 #ifdef CONFIG_LIBIPW_DEBUG
1162                         p = rates_str;
1163 #endif
1164                         network->rates_len = min(info_element->len,
1165                                                  MAX_RATES_LENGTH);
1166                         for (i = 0; i < network->rates_len; i++) {
1167                                 network->rates[i] = info_element->data[i];
1168 #ifdef CONFIG_LIBIPW_DEBUG
1169                                 p += snprintf(p, sizeof(rates_str) -
1170                                               (p - rates_str), "%02X ",
1171                                               network->rates[i]);
1172 #endif
1173                                 if (libipw_is_ofdm_rate
1174                                     (info_element->data[i])) {
1175                                         network->flags |= NETWORK_HAS_OFDM;
1176                                         if (info_element->data[i] &
1177                                             LIBIPW_BASIC_RATE_MASK)
1178                                                 network->flags &=
1179                                                     ~NETWORK_HAS_CCK;
1180                                 }
1181                         }
1182
1183                         LIBIPW_DEBUG_MGMT("WLAN_EID_SUPP_RATES: '%s' (%d)\n",
1184                                              rates_str, network->rates_len);
1185                         break;
1186
1187                 case WLAN_EID_EXT_SUPP_RATES:
1188 #ifdef CONFIG_LIBIPW_DEBUG
1189                         p = rates_str;
1190 #endif
1191                         network->rates_ex_len = min(info_element->len,
1192                                                     MAX_RATES_EX_LENGTH);
1193                         for (i = 0; i < network->rates_ex_len; i++) {
1194                                 network->rates_ex[i] = info_element->data[i];
1195 #ifdef CONFIG_LIBIPW_DEBUG
1196                                 p += snprintf(p, sizeof(rates_str) -
1197                                               (p - rates_str), "%02X ",
1198                                               network->rates[i]);
1199 #endif
1200                                 if (libipw_is_ofdm_rate
1201                                     (info_element->data[i])) {
1202                                         network->flags |= NETWORK_HAS_OFDM;
1203                                         if (info_element->data[i] &
1204                                             LIBIPW_BASIC_RATE_MASK)
1205                                                 network->flags &=
1206                                                     ~NETWORK_HAS_CCK;
1207                                 }
1208                         }
1209
1210                         LIBIPW_DEBUG_MGMT("WLAN_EID_EXT_SUPP_RATES: '%s' (%d)\n",
1211                                              rates_str, network->rates_ex_len);
1212                         break;
1213
1214                 case WLAN_EID_DS_PARAMS:
1215                         LIBIPW_DEBUG_MGMT("WLAN_EID_DS_PARAMS: %d\n",
1216                                              info_element->data[0]);
1217                         network->channel = info_element->data[0];
1218                         break;
1219
1220                 case WLAN_EID_FH_PARAMS:
1221                         LIBIPW_DEBUG_MGMT("WLAN_EID_FH_PARAMS: ignored\n");
1222                         break;
1223
1224                 case WLAN_EID_CF_PARAMS:
1225                         LIBIPW_DEBUG_MGMT("WLAN_EID_CF_PARAMS: ignored\n");
1226                         break;
1227
1228                 case WLAN_EID_TIM:
1229                         network->tim.tim_count = info_element->data[0];
1230                         network->tim.tim_period = info_element->data[1];
1231                         LIBIPW_DEBUG_MGMT("WLAN_EID_TIM: partially ignored\n");
1232                         break;
1233
1234                 case WLAN_EID_ERP_INFO:
1235                         network->erp_value = info_element->data[0];
1236                         network->flags |= NETWORK_HAS_ERP_VALUE;
1237                         LIBIPW_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1238                                              network->erp_value);
1239                         break;
1240
1241                 case WLAN_EID_IBSS_PARAMS:
1242                         network->atim_window = info_element->data[0];
1243                         LIBIPW_DEBUG_MGMT("WLAN_EID_IBSS_PARAMS: %d\n",
1244                                              network->atim_window);
1245                         break;
1246
1247                 case WLAN_EID_CHALLENGE:
1248                         LIBIPW_DEBUG_MGMT("WLAN_EID_CHALLENGE: ignored\n");
1249                         break;
1250
1251                 case WLAN_EID_VENDOR_SPECIFIC:
1252                         LIBIPW_DEBUG_MGMT("WLAN_EID_VENDOR_SPECIFIC: %d bytes\n",
1253                                              info_element->len);
1254                         if (!libipw_parse_qos_info_param_IE(info_element,
1255                                                                network))
1256                                 break;
1257
1258                         if (info_element->len >= 4 &&
1259                             info_element->data[0] == 0x00 &&
1260                             info_element->data[1] == 0x50 &&
1261                             info_element->data[2] == 0xf2 &&
1262                             info_element->data[3] == 0x01) {
1263                                 network->wpa_ie_len = min(info_element->len + 2,
1264                                                           MAX_WPA_IE_LEN);
1265                                 memcpy(network->wpa_ie, info_element,
1266                                        network->wpa_ie_len);
1267                         }
1268                         break;
1269
1270                 case WLAN_EID_RSN:
1271                         LIBIPW_DEBUG_MGMT("WLAN_EID_RSN: %d bytes\n",
1272                                              info_element->len);
1273                         network->rsn_ie_len = min(info_element->len + 2,
1274                                                   MAX_WPA_IE_LEN);
1275                         memcpy(network->rsn_ie, info_element,
1276                                network->rsn_ie_len);
1277                         break;
1278
1279                 case WLAN_EID_QOS_PARAMETER:
1280                         printk(KERN_ERR
1281                                "QoS Error need to parse QOS_PARAMETER IE\n");
1282                         break;
1283                         /* 802.11h */
1284                 case WLAN_EID_PWR_CONSTRAINT:
1285                         network->power_constraint = info_element->data[0];
1286                         network->flags |= NETWORK_HAS_POWER_CONSTRAINT;
1287                         break;
1288
1289                 case WLAN_EID_CHANNEL_SWITCH:
1290                         network->power_constraint = info_element->data[0];
1291                         network->flags |= NETWORK_HAS_CSA;
1292                         break;
1293
1294                 case WLAN_EID_QUIET:
1295                         network->quiet.count = info_element->data[0];
1296                         network->quiet.period = info_element->data[1];
1297                         network->quiet.duration = info_element->data[2];
1298                         network->quiet.offset = info_element->data[3];
1299                         network->flags |= NETWORK_HAS_QUIET;
1300                         break;
1301
1302                 case WLAN_EID_IBSS_DFS:
1303                         if (network->ibss_dfs)
1304                                 break;
1305                         network->ibss_dfs = kmemdup(info_element->data,
1306                                                     info_element->len,
1307                                                     GFP_ATOMIC);
1308                         if (!network->ibss_dfs)
1309                                 return 1;
1310                         network->flags |= NETWORK_HAS_IBSS_DFS;
1311                         break;
1312
1313                 case WLAN_EID_TPC_REPORT:
1314                         network->tpc_report.transmit_power =
1315                             info_element->data[0];
1316                         network->tpc_report.link_margin = info_element->data[1];
1317                         network->flags |= NETWORK_HAS_TPC_REPORT;
1318                         break;
1319
1320                 default:
1321                         LIBIPW_DEBUG_MGMT
1322                             ("Unsupported info element: %s (%d)\n",
1323                              get_info_element_string(info_element->id),
1324                              info_element->id);
1325                         break;
1326                 }
1327
1328                 length -= sizeof(*info_element) + info_element->len;
1329                 info_element =
1330                     (struct libipw_info_element *)&info_element->
1331                     data[info_element->len];
1332         }
1333
1334         return 0;
1335 }
1336
1337 static int libipw_handle_assoc_resp(struct libipw_device *ieee, struct libipw_assoc_response
1338                                        *frame, struct libipw_rx_stats *stats)
1339 {
1340         struct libipw_network network_resp = {
1341                 .ibss_dfs = NULL,
1342         };
1343         struct libipw_network *network = &network_resp;
1344         struct net_device *dev = ieee->dev;
1345
1346         network->flags = 0;
1347         network->qos_data.active = 0;
1348         network->qos_data.supported = 0;
1349         network->qos_data.param_count = 0;
1350         network->qos_data.old_param_count = 0;
1351
1352         //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF);
1353         network->atim_window = le16_to_cpu(frame->aid);
1354         network->listen_interval = le16_to_cpu(frame->status);
1355         memcpy(network->bssid, frame->header.addr3, ETH_ALEN);
1356         network->capability = le16_to_cpu(frame->capability);
1357         network->last_scanned = jiffies;
1358         network->rates_len = network->rates_ex_len = 0;
1359         network->last_associate = 0;
1360         network->ssid_len = 0;
1361         network->erp_value =
1362             (network->capability & WLAN_CAPABILITY_IBSS) ? 0x3 : 0x0;
1363
1364         if (stats->freq == LIBIPW_52GHZ_BAND) {
1365                 /* for A band (No DS info) */
1366                 network->channel = stats->received_channel;
1367         } else
1368                 network->flags |= NETWORK_HAS_CCK;
1369
1370         network->wpa_ie_len = 0;
1371         network->rsn_ie_len = 0;
1372
1373         if (libipw_parse_info_param
1374             (frame->info_element, stats->len - sizeof(*frame), network))
1375                 return 1;
1376
1377         network->mode = 0;
1378         if (stats->freq == LIBIPW_52GHZ_BAND)
1379                 network->mode = IEEE_A;
1380         else {
1381                 if (network->flags & NETWORK_HAS_OFDM)
1382                         network->mode |= IEEE_G;
1383                 if (network->flags & NETWORK_HAS_CCK)
1384                         network->mode |= IEEE_B;
1385         }
1386
1387         memcpy(&network->stats, stats, sizeof(network->stats));
1388
1389         if (ieee->handle_assoc_response != NULL)
1390                 ieee->handle_assoc_response(dev, frame, network);
1391
1392         return 0;
1393 }
1394
1395 /***************************************************/
1396
1397 static int libipw_network_init(struct libipw_device *ieee, struct libipw_probe_response
1398                                          *beacon,
1399                                          struct libipw_network *network,
1400                                          struct libipw_rx_stats *stats)
1401 {
1402         DECLARE_SSID_BUF(ssid);
1403
1404         network->qos_data.active = 0;
1405         network->qos_data.supported = 0;
1406         network->qos_data.param_count = 0;
1407         network->qos_data.old_param_count = 0;
1408
1409         /* Pull out fixed field data */
1410         memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
1411         network->capability = le16_to_cpu(beacon->capability);
1412         network->last_scanned = jiffies;
1413         network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
1414         network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1415         network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
1416         /* Where to pull this? beacon->listen_interval; */
1417         network->listen_interval = 0x0A;
1418         network->rates_len = network->rates_ex_len = 0;
1419         network->last_associate = 0;
1420         network->ssid_len = 0;
1421         network->flags = 0;
1422         network->atim_window = 0;
1423         network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
1424             0x3 : 0x0;
1425
1426         if (stats->freq == LIBIPW_52GHZ_BAND) {
1427                 /* for A band (No DS info) */
1428                 network->channel = stats->received_channel;
1429         } else
1430                 network->flags |= NETWORK_HAS_CCK;
1431
1432         network->wpa_ie_len = 0;
1433         network->rsn_ie_len = 0;
1434
1435         if (libipw_parse_info_param
1436             (beacon->info_element, stats->len - sizeof(*beacon), network))
1437                 return 1;
1438
1439         network->mode = 0;
1440         if (stats->freq == LIBIPW_52GHZ_BAND)
1441                 network->mode = IEEE_A;
1442         else {
1443                 if (network->flags & NETWORK_HAS_OFDM)
1444                         network->mode |= IEEE_G;
1445                 if (network->flags & NETWORK_HAS_CCK)
1446                         network->mode |= IEEE_B;
1447         }
1448
1449         if (network->mode == 0) {
1450                 LIBIPW_DEBUG_SCAN("Filtered out '%s (%pM)' "
1451                                      "network.\n",
1452                                      print_ssid(ssid, network->ssid,
1453                                                  network->ssid_len),
1454                                      network->bssid);
1455                 return 1;
1456         }
1457
1458         memcpy(&network->stats, stats, sizeof(network->stats));
1459
1460         return 0;
1461 }
1462
1463 static inline int is_same_network(struct libipw_network *src,
1464                                   struct libipw_network *dst)
1465 {
1466         /* A network is only a duplicate if the channel, BSSID, and ESSID
1467          * all match.  We treat all <hidden> with the same BSSID and channel
1468          * as one network */
1469         return ((src->ssid_len == dst->ssid_len) &&
1470                 (src->channel == dst->channel) &&
1471                 ether_addr_equal(src->bssid, dst->bssid) &&
1472                 !memcmp(src->ssid, dst->ssid, src->ssid_len));
1473 }
1474
1475 static void update_network(struct libipw_network *dst,
1476                                   struct libipw_network *src)
1477 {
1478         int qos_active;
1479         u8 old_param;
1480
1481         libipw_network_reset(dst);
1482         dst->ibss_dfs = src->ibss_dfs;
1483
1484         /* We only update the statistics if they were created by receiving
1485          * the network information on the actual channel the network is on.
1486          *
1487          * This keeps beacons received on neighbor channels from bringing
1488          * down the signal level of an AP. */
1489         if (dst->channel == src->stats.received_channel)
1490                 memcpy(&dst->stats, &src->stats,
1491                        sizeof(struct libipw_rx_stats));
1492         else
1493                 LIBIPW_DEBUG_SCAN("Network %pM info received "
1494                         "off channel (%d vs. %d)\n", src->bssid,
1495                         dst->channel, src->stats.received_channel);
1496
1497         dst->capability = src->capability;
1498         memcpy(dst->rates, src->rates, src->rates_len);
1499         dst->rates_len = src->rates_len;
1500         memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
1501         dst->rates_ex_len = src->rates_ex_len;
1502
1503         dst->mode = src->mode;
1504         dst->flags = src->flags;
1505         dst->time_stamp[0] = src->time_stamp[0];
1506         dst->time_stamp[1] = src->time_stamp[1];
1507
1508         dst->beacon_interval = src->beacon_interval;
1509         dst->listen_interval = src->listen_interval;
1510         dst->atim_window = src->atim_window;
1511         dst->erp_value = src->erp_value;
1512         dst->tim = src->tim;
1513
1514         memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
1515         dst->wpa_ie_len = src->wpa_ie_len;
1516         memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
1517         dst->rsn_ie_len = src->rsn_ie_len;
1518
1519         dst->last_scanned = jiffies;
1520         qos_active = src->qos_data.active;
1521         old_param = dst->qos_data.old_param_count;
1522         if (dst->flags & NETWORK_HAS_QOS_MASK)
1523                 memcpy(&dst->qos_data, &src->qos_data,
1524                        sizeof(struct libipw_qos_data));
1525         else {
1526                 dst->qos_data.supported = src->qos_data.supported;
1527                 dst->qos_data.param_count = src->qos_data.param_count;
1528         }
1529
1530         if (dst->qos_data.supported == 1) {
1531                 if (dst->ssid_len)
1532                         LIBIPW_DEBUG_QOS
1533                             ("QoS the network %s is QoS supported\n",
1534                              dst->ssid);
1535                 else
1536                         LIBIPW_DEBUG_QOS
1537                             ("QoS the network is QoS supported\n");
1538         }
1539         dst->qos_data.active = qos_active;
1540         dst->qos_data.old_param_count = old_param;
1541
1542         /* dst->last_associate is not overwritten */
1543 }
1544
1545 static inline int is_beacon(__le16 fc)
1546 {
1547         return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
1548 }
1549
1550 static void libipw_process_probe_response(struct libipw_device
1551                                                     *ieee, struct
1552                                                     libipw_probe_response
1553                                                     *beacon, struct libipw_rx_stats
1554                                                     *stats)
1555 {
1556         struct net_device *dev = ieee->dev;
1557         struct libipw_network network = {
1558                 .ibss_dfs = NULL,
1559         };
1560         struct libipw_network *target;
1561         struct libipw_network *oldest = NULL;
1562 #ifdef CONFIG_LIBIPW_DEBUG
1563         struct libipw_info_element *info_element = beacon->info_element;
1564 #endif
1565         unsigned long flags;
1566         DECLARE_SSID_BUF(ssid);
1567
1568         LIBIPW_DEBUG_SCAN("'%s' (%pM"
1569                      "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
1570                      print_ssid(ssid, info_element->data, info_element->len),
1571                      beacon->header.addr3,
1572                      (beacon->capability & cpu_to_le16(1 << 0xf)) ? '1' : '0',
1573                      (beacon->capability & cpu_to_le16(1 << 0xe)) ? '1' : '0',
1574                      (beacon->capability & cpu_to_le16(1 << 0xd)) ? '1' : '0',
1575                      (beacon->capability & cpu_to_le16(1 << 0xc)) ? '1' : '0',
1576                      (beacon->capability & cpu_to_le16(1 << 0xb)) ? '1' : '0',
1577                      (beacon->capability & cpu_to_le16(1 << 0xa)) ? '1' : '0',
1578                      (beacon->capability & cpu_to_le16(1 << 0x9)) ? '1' : '0',
1579                      (beacon->capability & cpu_to_le16(1 << 0x8)) ? '1' : '0',
1580                      (beacon->capability & cpu_to_le16(1 << 0x7)) ? '1' : '0',
1581                      (beacon->capability & cpu_to_le16(1 << 0x6)) ? '1' : '0',
1582                      (beacon->capability & cpu_to_le16(1 << 0x5)) ? '1' : '0',
1583                      (beacon->capability & cpu_to_le16(1 << 0x4)) ? '1' : '0',
1584                      (beacon->capability & cpu_to_le16(1 << 0x3)) ? '1' : '0',
1585                      (beacon->capability & cpu_to_le16(1 << 0x2)) ? '1' : '0',
1586                      (beacon->capability & cpu_to_le16(1 << 0x1)) ? '1' : '0',
1587                      (beacon->capability & cpu_to_le16(1 << 0x0)) ? '1' : '0');
1588
1589         if (libipw_network_init(ieee, beacon, &network, stats)) {
1590                 LIBIPW_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
1591                                      print_ssid(ssid, info_element->data,
1592                                                  info_element->len),
1593                                      beacon->header.addr3,
1594                                      is_beacon(beacon->header.frame_ctl) ?
1595                                      "BEACON" : "PROBE RESPONSE");
1596                 return;
1597         }
1598
1599         /* The network parsed correctly -- so now we scan our known networks
1600          * to see if we can find it in our list.
1601          *
1602          * NOTE:  This search is definitely not optimized.  Once its doing
1603          *        the "right thing" we'll optimize it for efficiency if
1604          *        necessary */
1605
1606         /* Search for this entry in the list and update it if it is
1607          * already there. */
1608
1609         spin_lock_irqsave(&ieee->lock, flags);
1610
1611         list_for_each_entry(target, &ieee->network_list, list) {
1612                 if (is_same_network(target, &network))
1613                         break;
1614
1615                 if ((oldest == NULL) ||
1616                     time_before(target->last_scanned, oldest->last_scanned))
1617                         oldest = target;
1618         }
1619
1620         /* If we didn't find a match, then get a new network slot to initialize
1621          * with this beacon's information */
1622         if (&target->list == &ieee->network_list) {
1623                 if (list_empty(&ieee->network_free_list)) {
1624                         /* If there are no more slots, expire the oldest */
1625                         list_del(&oldest->list);
1626                         target = oldest;
1627                         LIBIPW_DEBUG_SCAN("Expired '%s' (%pM) from "
1628                                              "network list.\n",
1629                                              print_ssid(ssid, target->ssid,
1630                                                          target->ssid_len),
1631                                              target->bssid);
1632                         libipw_network_reset(target);
1633                 } else {
1634                         /* Otherwise just pull from the free list */
1635                         target = list_entry(ieee->network_free_list.next,
1636                                             struct libipw_network, list);
1637                         list_del(ieee->network_free_list.next);
1638                 }
1639
1640 #ifdef CONFIG_LIBIPW_DEBUG
1641                 LIBIPW_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
1642                                      print_ssid(ssid, network.ssid,
1643                                                  network.ssid_len),
1644                                      network.bssid,
1645                                      is_beacon(beacon->header.frame_ctl) ?
1646                                      "BEACON" : "PROBE RESPONSE");
1647 #endif
1648                 memcpy(target, &network, sizeof(*target));
1649                 network.ibss_dfs = NULL;
1650                 list_add_tail(&target->list, &ieee->network_list);
1651         } else {
1652                 LIBIPW_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
1653                                      print_ssid(ssid, target->ssid,
1654                                                  target->ssid_len),
1655                                      target->bssid,
1656                                      is_beacon(beacon->header.frame_ctl) ?
1657                                      "BEACON" : "PROBE RESPONSE");
1658                 update_network(target, &network);
1659                 network.ibss_dfs = NULL;
1660         }
1661
1662         spin_unlock_irqrestore(&ieee->lock, flags);
1663
1664         if (is_beacon(beacon->header.frame_ctl)) {
1665                 if (ieee->handle_beacon != NULL)
1666                         ieee->handle_beacon(dev, beacon, target);
1667         } else {
1668                 if (ieee->handle_probe_response != NULL)
1669                         ieee->handle_probe_response(dev, beacon, target);
1670         }
1671 }
1672
1673 void libipw_rx_mgt(struct libipw_device *ieee,
1674                       struct libipw_hdr_4addr *header,
1675                       struct libipw_rx_stats *stats)
1676 {
1677         switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
1678         case IEEE80211_STYPE_ASSOC_RESP:
1679                 LIBIPW_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n",
1680                                      WLAN_FC_GET_STYPE(le16_to_cpu
1681                                                        (header->frame_ctl)));
1682                 libipw_handle_assoc_resp(ieee,
1683                                             (struct libipw_assoc_response *)
1684                                             header, stats);
1685                 break;
1686
1687         case IEEE80211_STYPE_REASSOC_RESP:
1688                 LIBIPW_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n",
1689                                      WLAN_FC_GET_STYPE(le16_to_cpu
1690                                                        (header->frame_ctl)));
1691                 break;
1692
1693         case IEEE80211_STYPE_PROBE_REQ:
1694                 LIBIPW_DEBUG_MGMT("received auth (%d)\n",
1695                                      WLAN_FC_GET_STYPE(le16_to_cpu
1696                                                        (header->frame_ctl)));
1697
1698                 if (ieee->handle_probe_request != NULL)
1699                         ieee->handle_probe_request(ieee->dev,
1700                                                    (struct
1701                                                     libipw_probe_request *)
1702                                                    header, stats);
1703                 break;
1704
1705         case IEEE80211_STYPE_PROBE_RESP:
1706                 LIBIPW_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
1707                                      WLAN_FC_GET_STYPE(le16_to_cpu
1708                                                        (header->frame_ctl)));
1709                 LIBIPW_DEBUG_SCAN("Probe response\n");
1710                 libipw_process_probe_response(ieee,
1711                                                  (struct
1712                                                   libipw_probe_response *)
1713                                                  header, stats);
1714                 break;
1715
1716         case IEEE80211_STYPE_BEACON:
1717                 LIBIPW_DEBUG_MGMT("received BEACON (%d)\n",
1718                                      WLAN_FC_GET_STYPE(le16_to_cpu
1719                                                        (header->frame_ctl)));
1720                 LIBIPW_DEBUG_SCAN("Beacon\n");
1721                 libipw_process_probe_response(ieee,
1722                                                  (struct
1723                                                   libipw_probe_response *)
1724                                                  header, stats);
1725                 break;
1726         case IEEE80211_STYPE_AUTH:
1727
1728                 LIBIPW_DEBUG_MGMT("received auth (%d)\n",
1729                                      WLAN_FC_GET_STYPE(le16_to_cpu
1730                                                        (header->frame_ctl)));
1731
1732                 if (ieee->handle_auth != NULL)
1733                         ieee->handle_auth(ieee->dev,
1734                                           (struct libipw_auth *)header);
1735                 break;
1736
1737         case IEEE80211_STYPE_DISASSOC:
1738                 if (ieee->handle_disassoc != NULL)
1739                         ieee->handle_disassoc(ieee->dev,
1740                                               (struct libipw_disassoc *)
1741                                               header);
1742                 break;
1743
1744         case IEEE80211_STYPE_ACTION:
1745                 LIBIPW_DEBUG_MGMT("ACTION\n");
1746                 if (ieee->handle_action)
1747                         ieee->handle_action(ieee->dev,
1748                                             (struct libipw_action *)
1749                                             header, stats);
1750                 break;
1751
1752         case IEEE80211_STYPE_REASSOC_REQ:
1753                 LIBIPW_DEBUG_MGMT("received reassoc (%d)\n",
1754                                      WLAN_FC_GET_STYPE(le16_to_cpu
1755                                                        (header->frame_ctl)));
1756
1757                 LIBIPW_DEBUG_MGMT("%s: LIBIPW_REASSOC_REQ received\n",
1758                                      ieee->dev->name);
1759                 if (ieee->handle_reassoc_request != NULL)
1760                         ieee->handle_reassoc_request(ieee->dev,
1761                                                     (struct libipw_reassoc_request *)
1762                                                      header);
1763                 break;
1764
1765         case IEEE80211_STYPE_ASSOC_REQ:
1766                 LIBIPW_DEBUG_MGMT("received assoc (%d)\n",
1767                                      WLAN_FC_GET_STYPE(le16_to_cpu
1768                                                        (header->frame_ctl)));
1769
1770                 LIBIPW_DEBUG_MGMT("%s: LIBIPW_ASSOC_REQ received\n",
1771                                      ieee->dev->name);
1772                 if (ieee->handle_assoc_request != NULL)
1773                         ieee->handle_assoc_request(ieee->dev);
1774                 break;
1775
1776         case IEEE80211_STYPE_DEAUTH:
1777                 LIBIPW_DEBUG_MGMT("DEAUTH\n");
1778                 if (ieee->handle_deauth != NULL)
1779                         ieee->handle_deauth(ieee->dev,
1780                                             (struct libipw_deauth *)
1781                                             header);
1782                 break;
1783         default:
1784                 LIBIPW_DEBUG_MGMT("received UNKNOWN (%d)\n",
1785                                      WLAN_FC_GET_STYPE(le16_to_cpu
1786                                                        (header->frame_ctl)));
1787                 LIBIPW_DEBUG_MGMT("%s: Unknown management packet: %d\n",
1788                                      ieee->dev->name,
1789                                      WLAN_FC_GET_STYPE(le16_to_cpu
1790                                                        (header->frame_ctl)));
1791                 break;
1792         }
1793 }
1794
1795 EXPORT_SYMBOL_GPL(libipw_rx_any);
1796 EXPORT_SYMBOL(libipw_rx_mgt);
1797 EXPORT_SYMBOL(libipw_rx);