Commit | Line | Data |
---|---|---|
b453872c JG |
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 | * <jkmaline@cc.hut.fi> | |
7 | * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
ebeaddcc | 8 | * Copyright (c) 2004-2005, Intel Corporation |
b453872c JG |
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/config.h> | |
18 | #include <linux/errno.h> | |
19 | #include <linux/if_arp.h> | |
20 | #include <linux/in6.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> | |
b453872c JG |
26 | #include <linux/proc_fs.h> |
27 | #include <linux/skbuff.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tcp.h> | |
30 | #include <linux/types.h> | |
b453872c JG |
31 | #include <linux/wireless.h> |
32 | #include <linux/etherdevice.h> | |
33 | #include <asm/uaccess.h> | |
34 | #include <linux/ctype.h> | |
35 | ||
36 | #include <net/ieee80211.h> | |
37 | ||
858119e1 | 38 | static void ieee80211_monitor_rx(struct ieee80211_device *ieee, |
b453872c JG |
39 | struct sk_buff *skb, |
40 | struct ieee80211_rx_stats *rx_stats) | |
41 | { | |
42 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
43 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
44 | ||
45 | skb->dev = ieee->dev; | |
46 | skb->mac.raw = skb->data; | |
47 | skb_pull(skb, ieee80211_get_hdrlen(fc)); | |
48 | skb->pkt_type = PACKET_OTHERHOST; | |
49 | skb->protocol = __constant_htons(ETH_P_80211_RAW); | |
50 | memset(skb->cb, 0, sizeof(skb->cb)); | |
51 | netif_rx(skb); | |
52 | } | |
53 | ||
b453872c | 54 | /* Called only as a tasklet (software IRQ) */ |
0edd5b44 JG |
55 | static struct ieee80211_frag_entry *ieee80211_frag_cache_find(struct |
56 | ieee80211_device | |
57 | *ieee, | |
58 | unsigned int seq, | |
59 | unsigned int frag, | |
60 | u8 * src, | |
61 | u8 * dst) | |
b453872c JG |
62 | { |
63 | struct ieee80211_frag_entry *entry; | |
64 | int i; | |
65 | ||
66 | for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { | |
67 | entry = &ieee->frag_cache[i]; | |
68 | if (entry->skb != NULL && | |
69 | time_after(jiffies, entry->first_frag_time + 2 * HZ)) { | |
0edd5b44 JG |
70 | IEEE80211_DEBUG_FRAG("expiring fragment cache entry " |
71 | "seq=%u last_frag=%u\n", | |
72 | entry->seq, entry->last_frag); | |
b453872c JG |
73 | dev_kfree_skb_any(entry->skb); |
74 | entry->skb = NULL; | |
75 | } | |
76 | ||
77 | if (entry->skb != NULL && entry->seq == seq && | |
78 | (entry->last_frag + 1 == frag || frag == -1) && | |
d3f4a687 KK |
79 | !compare_ether_addr(entry->src_addr, src) && |
80 | !compare_ether_addr(entry->dst_addr, dst)) | |
b453872c JG |
81 | return entry; |
82 | } | |
83 | ||
84 | return NULL; | |
85 | } | |
86 | ||
87 | /* Called only as a tasklet (software IRQ) */ | |
0edd5b44 | 88 | static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee, |
ee34af37 | 89 | struct ieee80211_hdr_4addr *hdr) |
b453872c JG |
90 | { |
91 | struct sk_buff *skb = NULL; | |
92 | u16 sc; | |
93 | unsigned int frag, seq; | |
94 | struct ieee80211_frag_entry *entry; | |
95 | ||
96 | sc = le16_to_cpu(hdr->seq_ctl); | |
97 | frag = WLAN_GET_SEQ_FRAG(sc); | |
98 | seq = WLAN_GET_SEQ_SEQ(sc); | |
99 | ||
100 | if (frag == 0) { | |
101 | /* Reserve enough space to fit maximum frame length */ | |
102 | skb = dev_alloc_skb(ieee->dev->mtu + | |
ee34af37 | 103 | sizeof(struct ieee80211_hdr_4addr) + |
0edd5b44 JG |
104 | 8 /* LLC */ + |
105 | 2 /* alignment */ + | |
106 | 8 /* WEP */ + ETH_ALEN /* WDS */ ); | |
b453872c JG |
107 | if (skb == NULL) |
108 | return NULL; | |
109 | ||
110 | entry = &ieee->frag_cache[ieee->frag_next_idx]; | |
111 | ieee->frag_next_idx++; | |
112 | if (ieee->frag_next_idx >= IEEE80211_FRAG_CACHE_LEN) | |
113 | ieee->frag_next_idx = 0; | |
114 | ||
115 | if (entry->skb != NULL) | |
116 | dev_kfree_skb_any(entry->skb); | |
117 | ||
118 | entry->first_frag_time = jiffies; | |
119 | entry->seq = seq; | |
120 | entry->last_frag = frag; | |
121 | entry->skb = skb; | |
122 | memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); | |
123 | memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); | |
124 | } else { | |
125 | /* received a fragment of a frame for which the head fragment | |
126 | * should have already been received */ | |
127 | entry = ieee80211_frag_cache_find(ieee, seq, frag, hdr->addr2, | |
128 | hdr->addr1); | |
129 | if (entry != NULL) { | |
130 | entry->last_frag = frag; | |
131 | skb = entry->skb; | |
132 | } | |
133 | } | |
134 | ||
135 | return skb; | |
136 | } | |
137 | ||
b453872c JG |
138 | /* Called only as a tasklet (software IRQ) */ |
139 | static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, | |
ee34af37 | 140 | struct ieee80211_hdr_4addr *hdr) |
b453872c JG |
141 | { |
142 | u16 sc; | |
143 | unsigned int seq; | |
144 | struct ieee80211_frag_entry *entry; | |
145 | ||
146 | sc = le16_to_cpu(hdr->seq_ctl); | |
147 | seq = WLAN_GET_SEQ_SEQ(sc); | |
148 | ||
149 | entry = ieee80211_frag_cache_find(ieee, seq, -1, hdr->addr2, | |
150 | hdr->addr1); | |
151 | ||
152 | if (entry == NULL) { | |
0edd5b44 JG |
153 | IEEE80211_DEBUG_FRAG("could not invalidate fragment cache " |
154 | "entry (seq=%u)\n", seq); | |
b453872c JG |
155 | return -1; |
156 | } | |
157 | ||
158 | entry->skb = NULL; | |
159 | return 0; | |
160 | } | |
161 | ||
b453872c JG |
162 | #ifdef NOT_YET |
163 | /* ieee80211_rx_frame_mgtmt | |
164 | * | |
165 | * Responsible for handling management control frames | |
166 | * | |
167 | * Called by ieee80211_rx */ | |
858119e1 | 168 | static int |
b453872c JG |
169 | ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, |
170 | struct ieee80211_rx_stats *rx_stats, u16 type, | |
171 | u16 stype) | |
172 | { | |
173 | if (ieee->iw_mode == IW_MODE_MASTER) { | |
174 | printk(KERN_DEBUG "%s: Master mode not yet suppported.\n", | |
175 | ieee->dev->name); | |
176 | return 0; | |
177 | /* | |
ee34af37 | 178 | hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) |
b453872c JG |
179 | skb->data);*/ |
180 | } | |
181 | ||
182 | if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) { | |
183 | if (stype == WLAN_FC_STYPE_BEACON && | |
184 | ieee->iw_mode == IW_MODE_MASTER) { | |
185 | struct sk_buff *skb2; | |
186 | /* Process beacon frames also in kernel driver to | |
187 | * update STA(AP) table statistics */ | |
188 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
189 | if (skb2) | |
190 | hostap_rx(skb2->dev, skb2, rx_stats); | |
191 | } | |
192 | ||
193 | /* send management frames to the user space daemon for | |
194 | * processing */ | |
195 | ieee->apdevstats.rx_packets++; | |
196 | ieee->apdevstats.rx_bytes += skb->len; | |
197 | prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); | |
198 | return 0; | |
199 | } | |
200 | ||
0edd5b44 | 201 | if (ieee->iw_mode == IW_MODE_MASTER) { |
b453872c JG |
202 | if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { |
203 | printk(KERN_DEBUG "%s: unknown management frame " | |
204 | "(type=0x%02x, stype=0x%02x) dropped\n", | |
205 | skb->dev->name, type, stype); | |
206 | return -1; | |
207 | } | |
208 | ||
209 | hostap_rx(skb->dev, skb, rx_stats); | |
210 | return 0; | |
211 | } | |
212 | ||
213 | printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " | |
214 | "received in non-Host AP mode\n", skb->dev->name); | |
215 | return -1; | |
216 | } | |
217 | #endif | |
218 | ||
b453872c JG |
219 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ |
220 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ | |
0edd5b44 JG |
221 | static unsigned char rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; |
222 | ||
b453872c JG |
223 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ |
224 | static unsigned char bridge_tunnel_header[] = | |
0edd5b44 | 225 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; |
b453872c JG |
226 | /* No encapsulation header if EtherType < 0x600 (=length) */ |
227 | ||
228 | /* Called by ieee80211_rx_frame_decrypt */ | |
229 | static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, | |
230 | struct sk_buff *skb) | |
231 | { | |
232 | struct net_device *dev = ieee->dev; | |
233 | u16 fc, ethertype; | |
ee34af37 | 234 | struct ieee80211_hdr_3addr *hdr; |
b453872c JG |
235 | u8 *pos; |
236 | ||
237 | if (skb->len < 24) | |
238 | return 0; | |
239 | ||
ee34af37 | 240 | hdr = (struct ieee80211_hdr_3addr *)skb->data; |
b453872c JG |
241 | fc = le16_to_cpu(hdr->frame_ctl); |
242 | ||
243 | /* check that the frame is unicast frame to us */ | |
244 | if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
245 | IEEE80211_FCTL_TODS && | |
d3f4a687 KK |
246 | !compare_ether_addr(hdr->addr1, dev->dev_addr) && |
247 | !compare_ether_addr(hdr->addr3, dev->dev_addr)) { | |
b453872c JG |
248 | /* ToDS frame with own addr BSSID and DA */ |
249 | } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
250 | IEEE80211_FCTL_FROMDS && | |
d3f4a687 | 251 | !compare_ether_addr(hdr->addr1, dev->dev_addr)) { |
b453872c JG |
252 | /* FromDS frame with own addr as DA */ |
253 | } else | |
254 | return 0; | |
255 | ||
256 | if (skb->len < 24 + 8) | |
257 | return 0; | |
258 | ||
259 | /* check for port access entity Ethernet type */ | |
260 | pos = skb->data + 24; | |
261 | ethertype = (pos[6] << 8) | pos[7]; | |
262 | if (ethertype == ETH_P_PAE) | |
263 | return 1; | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | /* Called only as a tasklet (software IRQ), by ieee80211_rx */ | |
858119e1 | 269 | static int |
0edd5b44 | 270 | ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb, |
b453872c JG |
271 | struct ieee80211_crypt_data *crypt) |
272 | { | |
ee34af37 | 273 | struct ieee80211_hdr_3addr *hdr; |
b453872c JG |
274 | int res, hdrlen; |
275 | ||
276 | if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) | |
277 | return 0; | |
278 | ||
ee34af37 | 279 | hdr = (struct ieee80211_hdr_3addr *)skb->data; |
b453872c JG |
280 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); |
281 | ||
b453872c JG |
282 | atomic_inc(&crypt->refcnt); |
283 | res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); | |
284 | atomic_dec(&crypt->refcnt); | |
285 | if (res < 0) { | |
0edd5b44 JG |
286 | IEEE80211_DEBUG_DROP("decryption failed (SA=" MAC_FMT |
287 | ") res=%d\n", MAC_ARG(hdr->addr2), res); | |
b453872c JG |
288 | if (res == -2) |
289 | IEEE80211_DEBUG_DROP("Decryption failed ICV " | |
290 | "mismatch (key %d)\n", | |
291 | skb->data[hdrlen + 3] >> 6); | |
292 | ieee->ieee_stats.rx_discards_undecryptable++; | |
293 | return -1; | |
294 | } | |
295 | ||
296 | return res; | |
297 | } | |
298 | ||
b453872c | 299 | /* Called only as a tasklet (software IRQ), by ieee80211_rx */ |
858119e1 | 300 | static int |
0edd5b44 JG |
301 | ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, |
302 | struct sk_buff *skb, int keyidx, | |
303 | struct ieee80211_crypt_data *crypt) | |
b453872c | 304 | { |
ee34af37 | 305 | struct ieee80211_hdr_3addr *hdr; |
b453872c JG |
306 | int res, hdrlen; |
307 | ||
308 | if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) | |
309 | return 0; | |
310 | ||
ee34af37 | 311 | hdr = (struct ieee80211_hdr_3addr *)skb->data; |
b453872c JG |
312 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); |
313 | ||
314 | atomic_inc(&crypt->refcnt); | |
315 | res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); | |
316 | atomic_dec(&crypt->refcnt); | |
317 | if (res < 0) { | |
318 | printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" | |
319 | " (SA=" MAC_FMT " keyidx=%d)\n", | |
320 | ieee->dev->name, MAC_ARG(hdr->addr2), keyidx); | |
321 | return -1; | |
322 | } | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
b453872c JG |
327 | /* All received frames are sent to this function. @skb contains the frame in |
328 | * IEEE 802.11 format, i.e., in the format it was sent over air. | |
329 | * This function is called only as a tasklet (software IRQ). */ | |
330 | int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, | |
331 | struct ieee80211_rx_stats *rx_stats) | |
332 | { | |
333 | struct net_device *dev = ieee->dev; | |
ee34af37 | 334 | struct ieee80211_hdr_4addr *hdr; |
b453872c JG |
335 | size_t hdrlen; |
336 | u16 fc, type, stype, sc; | |
337 | struct net_device_stats *stats; | |
338 | unsigned int frag; | |
339 | u8 *payload; | |
340 | u16 ethertype; | |
341 | #ifdef NOT_YET | |
342 | struct net_device *wds = NULL; | |
343 | struct sk_buff *skb2 = NULL; | |
344 | struct net_device *wds = NULL; | |
345 | int frame_authorized = 0; | |
346 | int from_assoc_ap = 0; | |
347 | void *sta = NULL; | |
348 | #endif | |
349 | u8 dst[ETH_ALEN]; | |
350 | u8 src[ETH_ALEN]; | |
351 | struct ieee80211_crypt_data *crypt = NULL; | |
352 | int keyidx = 0; | |
b6daa25d | 353 | int can_be_decrypted = 0; |
b453872c | 354 | |
ee34af37 | 355 | hdr = (struct ieee80211_hdr_4addr *)skb->data; |
b453872c JG |
356 | stats = &ieee->stats; |
357 | ||
358 | if (skb->len < 10) { | |
0edd5b44 | 359 | printk(KERN_INFO "%s: SKB length < 10\n", dev->name); |
b453872c JG |
360 | goto rx_dropped; |
361 | } | |
362 | ||
363 | fc = le16_to_cpu(hdr->frame_ctl); | |
364 | type = WLAN_FC_GET_TYPE(fc); | |
365 | stype = WLAN_FC_GET_STYPE(fc); | |
366 | sc = le16_to_cpu(hdr->seq_ctl); | |
367 | frag = WLAN_GET_SEQ_FRAG(sc); | |
368 | hdrlen = ieee80211_get_hdrlen(fc); | |
369 | ||
b453872c JG |
370 | /* Put this code here so that we avoid duplicating it in all |
371 | * Rx paths. - Jean II */ | |
372 | #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ | |
fd7a516e | 373 | #ifdef CONFIG_NET_RADIO |
b453872c | 374 | /* If spy monitoring on */ |
74079fdc | 375 | if (ieee->spy_data.spy_number > 0) { |
b453872c | 376 | struct iw_quality wstats; |
74079fdc JK |
377 | |
378 | wstats.updated = 0; | |
379 | if (rx_stats->mask & IEEE80211_STATMASK_RSSI) { | |
380 | wstats.level = rx_stats->rssi; | |
381 | wstats.updated |= IW_QUAL_LEVEL_UPDATED; | |
382 | } else | |
383 | wstats.updated |= IW_QUAL_LEVEL_INVALID; | |
384 | ||
385 | if (rx_stats->mask & IEEE80211_STATMASK_NOISE) { | |
386 | wstats.noise = rx_stats->noise; | |
387 | wstats.updated |= IW_QUAL_NOISE_UPDATED; | |
388 | } else | |
389 | wstats.updated |= IW_QUAL_NOISE_INVALID; | |
390 | ||
391 | if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) { | |
392 | wstats.qual = rx_stats->signal; | |
393 | wstats.updated |= IW_QUAL_QUAL_UPDATED; | |
394 | } else | |
395 | wstats.updated |= IW_QUAL_QUAL_INVALID; | |
396 | ||
b453872c | 397 | /* Update spy records */ |
74079fdc | 398 | wireless_spy_update(ieee->dev, hdr->addr2, &wstats); |
b453872c | 399 | } |
fd7a516e | 400 | #endif /* CONFIG_NET_RADIO */ |
0edd5b44 | 401 | #endif /* IW_WIRELESS_SPY */ |
74079fdc JK |
402 | |
403 | #ifdef NOT_YET | |
b453872c JG |
404 | hostap_update_rx_stats(local->ap, hdr, rx_stats); |
405 | #endif | |
406 | ||
b453872c JG |
407 | if (ieee->iw_mode == IW_MODE_MONITOR) { |
408 | ieee80211_monitor_rx(ieee, skb, rx_stats); | |
409 | stats->rx_packets++; | |
410 | stats->rx_bytes += skb->len; | |
411 | return 1; | |
412 | } | |
b453872c | 413 | |
b6daa25d ZY |
414 | can_be_decrypted = (is_multicast_ether_addr(hdr->addr1) || |
415 | is_broadcast_ether_addr(hdr->addr2)) ? | |
416 | ieee->host_mc_decrypt : ieee->host_decrypt; | |
417 | ||
418 | if (can_be_decrypted) { | |
b453872c | 419 | int idx = 0; |
b6daa25d ZY |
420 | if (skb->len >= hdrlen + 3) { |
421 | /* Top two-bits of byte 3 are the key index */ | |
b453872c | 422 | idx = skb->data[hdrlen + 3] >> 6; |
b6daa25d ZY |
423 | } |
424 | ||
425 | /* ieee->crypt[] is WEP_KEY (4) in length. Given that idx | |
426 | * is only allowed 2-bits of storage, no value of idx can | |
427 | * be provided via above code that would result in idx | |
428 | * being out of range */ | |
b453872c | 429 | crypt = ieee->crypt[idx]; |
b6daa25d | 430 | |
b453872c JG |
431 | #ifdef NOT_YET |
432 | sta = NULL; | |
433 | ||
434 | /* Use station specific key to override default keys if the | |
435 | * receiver address is a unicast address ("individual RA"). If | |
436 | * bcrx_sta_key parameter is set, station specific key is used | |
437 | * even with broad/multicast targets (this is against IEEE | |
438 | * 802.11, but makes it easier to use different keys with | |
439 | * stations that do not support WEP key mapping). */ | |
440 | ||
441 | if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) | |
0edd5b44 JG |
442 | (void)hostap_handle_sta_crypto(local, hdr, &crypt, |
443 | &sta); | |
b453872c JG |
444 | #endif |
445 | ||
446 | /* allow NULL decrypt to indicate an station specific override | |
447 | * for default encryption */ | |
448 | if (crypt && (crypt->ops == NULL || | |
449 | crypt->ops->decrypt_mpdu == NULL)) | |
450 | crypt = NULL; | |
451 | ||
f13baae4 | 452 | if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) { |
b453872c JG |
453 | /* This seems to be triggered by some (multicast?) |
454 | * frames from other than current BSS, so just drop the | |
455 | * frames silently instead of filling system log with | |
456 | * these reports. */ | |
457 | IEEE80211_DEBUG_DROP("Decryption failed (not set)" | |
458 | " (SA=" MAC_FMT ")\n", | |
459 | MAC_ARG(hdr->addr2)); | |
460 | ieee->ieee_stats.rx_discards_undecryptable++; | |
461 | goto rx_dropped; | |
462 | } | |
463 | } | |
b453872c JG |
464 | #ifdef NOT_YET |
465 | if (type != WLAN_FC_TYPE_DATA) { | |
466 | if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH && | |
f13baae4 | 467 | fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt && |
0edd5b44 | 468 | (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) { |
b453872c JG |
469 | printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth " |
470 | "from " MAC_FMT "\n", dev->name, | |
471 | MAC_ARG(hdr->addr2)); | |
472 | /* TODO: could inform hostapd about this so that it | |
473 | * could send auth failure report */ | |
474 | goto rx_dropped; | |
475 | } | |
476 | ||
477 | if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) | |
478 | goto rx_dropped; | |
479 | else | |
480 | goto rx_exit; | |
481 | } | |
482 | #endif | |
483 | ||
484 | /* Data frame - extract src/dst addresses */ | |
286d9747 | 485 | if (skb->len < IEEE80211_3ADDR_LEN) |
b453872c JG |
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: | |
286d9747 | 498 | if (skb->len < IEEE80211_4ADDR_LEN) |
b453872c JG |
499 | goto rx_dropped; |
500 | memcpy(dst, hdr->addr3, ETH_ALEN); | |
501 | memcpy(src, hdr->addr4, ETH_ALEN); | |
502 | break; | |
503 | case 0: | |
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 && | |
0edd5b44 JG |
518 | (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == |
519 | IEEE80211_FCTL_FROMDS && ieee->stadev | |
d3f4a687 | 520 | && !compare_ether_addr(hdr->addr2, ieee->assoc_ap_addr)) { |
b453872c JG |
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 | dev->last_rx = jiffies; | |
529 | ||
530 | #ifdef NOT_YET | |
531 | if ((ieee->iw_mode == IW_MODE_MASTER || | |
0edd5b44 | 532 | ieee->iw_mode == IW_MODE_REPEAT) && !from_assoc_ap) { |
b453872c JG |
533 | switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, |
534 | wds != NULL)) { | |
535 | case AP_RX_CONTINUE_NOT_AUTHORIZED: | |
536 | frame_authorized = 0; | |
537 | break; | |
538 | case AP_RX_CONTINUE: | |
539 | frame_authorized = 1; | |
540 | break; | |
541 | case AP_RX_DROP: | |
542 | goto rx_dropped; | |
543 | case AP_RX_EXIT: | |
544 | goto rx_exit; | |
545 | } | |
546 | } | |
547 | #endif | |
548 | ||
549 | /* Nullfunc frames may have PS-bit set, so they must be passed to | |
550 | * hostap_handle_sta_rx() before being dropped here. */ | |
9e8571af JK |
551 | |
552 | stype &= ~IEEE80211_STYPE_QOS_DATA; | |
553 | ||
b453872c JG |
554 | if (stype != IEEE80211_STYPE_DATA && |
555 | stype != IEEE80211_STYPE_DATA_CFACK && | |
556 | stype != IEEE80211_STYPE_DATA_CFPOLL && | |
557 | stype != IEEE80211_STYPE_DATA_CFACKPOLL) { | |
558 | if (stype != IEEE80211_STYPE_NULLFUNC) | |
0edd5b44 JG |
559 | IEEE80211_DEBUG_DROP("RX: dropped data frame " |
560 | "with no data (type=0x%02x, " | |
561 | "subtype=0x%02x, len=%d)\n", | |
562 | type, stype, skb->len); | |
b453872c JG |
563 | goto rx_dropped; |
564 | } | |
565 | ||
566 | /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ | |
567 | ||
b6daa25d | 568 | if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted && |
b453872c JG |
569 | (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) |
570 | goto rx_dropped; | |
571 | ||
ee34af37 | 572 | hdr = (struct ieee80211_hdr_4addr *)skb->data; |
b453872c JG |
573 | |
574 | /* skb: hdr + (possibly fragmented) plaintext payload */ | |
575 | // PR: FIXME: hostap has additional conditions in the "if" below: | |
f13baae4 | 576 | // ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) && |
b453872c JG |
577 | if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { |
578 | int flen; | |
579 | struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); | |
580 | IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); | |
581 | ||
582 | if (!frag_skb) { | |
583 | IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, | |
584 | "Rx cannot get skb from fragment " | |
585 | "cache (morefrag=%d seq=%u frag=%u)\n", | |
586 | (fc & IEEE80211_FCTL_MOREFRAGS) != 0, | |
587 | WLAN_GET_SEQ_SEQ(sc), frag); | |
588 | goto rx_dropped; | |
589 | } | |
590 | ||
591 | flen = skb->len; | |
592 | if (frag != 0) | |
593 | flen -= hdrlen; | |
594 | ||
595 | if (frag_skb->tail + flen > frag_skb->end) { | |
596 | printk(KERN_WARNING "%s: host decrypted and " | |
597 | "reassembled frame did not fit skb\n", | |
598 | dev->name); | |
599 | ieee80211_frag_cache_invalidate(ieee, hdr); | |
600 | goto rx_dropped; | |
601 | } | |
602 | ||
603 | if (frag == 0) { | |
604 | /* copy first fragment (including full headers) into | |
605 | * beginning of the fragment cache skb */ | |
606 | memcpy(skb_put(frag_skb, flen), skb->data, flen); | |
607 | } else { | |
608 | /* append frame payload to the end of the fragment | |
609 | * cache skb */ | |
610 | memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, | |
611 | flen); | |
612 | } | |
613 | dev_kfree_skb_any(skb); | |
614 | skb = NULL; | |
615 | ||
616 | if (fc & IEEE80211_FCTL_MOREFRAGS) { | |
617 | /* more fragments expected - leave the skb in fragment | |
618 | * cache for now; it will be delivered to upper layers | |
619 | * after all fragments have been received */ | |
620 | goto rx_exit; | |
621 | } | |
622 | ||
623 | /* this was the last fragment and the frame will be | |
624 | * delivered, so remove skb from fragment cache */ | |
625 | skb = frag_skb; | |
ee34af37 | 626 | hdr = (struct ieee80211_hdr_4addr *)skb->data; |
b453872c JG |
627 | ieee80211_frag_cache_invalidate(ieee, hdr); |
628 | } | |
629 | ||
630 | /* skb: hdr + (possible reassembled) full MSDU payload; possibly still | |
631 | * encrypted/authenticated */ | |
b6daa25d | 632 | if ((fc & IEEE80211_FCTL_PROTECTED) && can_be_decrypted && |
b453872c JG |
633 | ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) |
634 | goto rx_dropped; | |
635 | ||
ee34af37 | 636 | hdr = (struct ieee80211_hdr_4addr *)skb->data; |
f13baae4 | 637 | if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) { |
0edd5b44 JG |
638 | if ( /*ieee->ieee802_1x && */ |
639 | ieee80211_is_eapol_frame(ieee, skb)) { | |
b453872c JG |
640 | /* pass unencrypted EAPOL frames even if encryption is |
641 | * configured */ | |
b453872c | 642 | } else { |
0edd5b44 JG |
643 | IEEE80211_DEBUG_DROP("encryption configured, but RX " |
644 | "frame not encrypted (SA=" MAC_FMT | |
645 | ")\n", MAC_ARG(hdr->addr2)); | |
b453872c JG |
646 | goto rx_dropped; |
647 | } | |
648 | } | |
649 | ||
f13baae4 | 650 | if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep && |
b453872c | 651 | !ieee80211_is_eapol_frame(ieee, skb)) { |
0edd5b44 JG |
652 | IEEE80211_DEBUG_DROP("dropped unencrypted RX data " |
653 | "frame from " MAC_FMT | |
654 | " (drop_unencrypted=1)\n", | |
655 | MAC_ARG(hdr->addr2)); | |
b453872c JG |
656 | goto rx_dropped; |
657 | } | |
658 | ||
659 | /* skb: hdr + (possible reassembled) full plaintext payload */ | |
660 | ||
661 | payload = skb->data + hdrlen; | |
662 | ethertype = (payload[6] << 8) | payload[7]; | |
663 | ||
664 | #ifdef NOT_YET | |
665 | /* If IEEE 802.1X is used, check whether the port is authorized to send | |
666 | * the received frame. */ | |
667 | if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) { | |
668 | if (ethertype == ETH_P_PAE) { | |
669 | printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n", | |
670 | dev->name); | |
671 | if (ieee->hostapd && ieee->apdev) { | |
672 | /* Send IEEE 802.1X frames to the user | |
673 | * space daemon for processing */ | |
674 | prism2_rx_80211(ieee->apdev, skb, rx_stats, | |
675 | PRISM2_RX_MGMT); | |
676 | ieee->apdevstats.rx_packets++; | |
677 | ieee->apdevstats.rx_bytes += skb->len; | |
678 | goto rx_exit; | |
679 | } | |
680 | } else if (!frame_authorized) { | |
681 | printk(KERN_DEBUG "%s: dropped frame from " | |
682 | "unauthorized port (IEEE 802.1X): " | |
0edd5b44 | 683 | "ethertype=0x%04x\n", dev->name, ethertype); |
b453872c JG |
684 | goto rx_dropped; |
685 | } | |
686 | } | |
687 | #endif | |
688 | ||
689 | /* convert hdr + possible LLC headers into Ethernet header */ | |
690 | if (skb->len - hdrlen >= 8 && | |
691 | ((memcmp(payload, rfc1042_header, SNAP_SIZE) == 0 && | |
692 | ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || | |
693 | memcmp(payload, bridge_tunnel_header, SNAP_SIZE) == 0)) { | |
694 | /* remove RFC1042 or Bridge-Tunnel encapsulation and | |
695 | * replace EtherType */ | |
696 | skb_pull(skb, hdrlen + SNAP_SIZE); | |
697 | memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN); | |
698 | memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN); | |
699 | } else { | |
700 | u16 len; | |
701 | /* Leave Ethernet header part of hdr and full payload */ | |
702 | skb_pull(skb, hdrlen); | |
703 | len = htons(skb->len); | |
704 | memcpy(skb_push(skb, 2), &len, 2); | |
705 | memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN); | |
706 | memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN); | |
707 | } | |
708 | ||
709 | #ifdef NOT_YET | |
710 | if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
0edd5b44 | 711 | IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) { |
b453872c JG |
712 | /* Non-standard frame: get addr4 from its bogus location after |
713 | * the payload */ | |
714 | memcpy(skb->data + ETH_ALEN, | |
715 | skb->data + skb->len - ETH_ALEN, ETH_ALEN); | |
716 | skb_trim(skb, skb->len - ETH_ALEN); | |
717 | } | |
718 | #endif | |
719 | ||
720 | stats->rx_packets++; | |
721 | stats->rx_bytes += skb->len; | |
722 | ||
723 | #ifdef NOT_YET | |
0edd5b44 | 724 | if (ieee->iw_mode == IW_MODE_MASTER && !wds && ieee->ap->bridge_packets) { |
b453872c JG |
725 | if (dst[0] & 0x01) { |
726 | /* copy multicast frame both to the higher layers and | |
727 | * to the wireless media */ | |
728 | ieee->ap->bridged_multicast++; | |
729 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
730 | if (skb2 == NULL) | |
731 | printk(KERN_DEBUG "%s: skb_clone failed for " | |
732 | "multicast frame\n", dev->name); | |
733 | } else if (hostap_is_sta_assoc(ieee->ap, dst)) { | |
734 | /* send frame directly to the associated STA using | |
735 | * wireless media and not passing to higher layers */ | |
736 | ieee->ap->bridged_unicast++; | |
737 | skb2 = skb; | |
738 | skb = NULL; | |
739 | } | |
740 | } | |
741 | ||
742 | if (skb2 != NULL) { | |
743 | /* send to wireless media */ | |
744 | skb2->protocol = __constant_htons(ETH_P_802_3); | |
745 | skb2->mac.raw = skb2->nh.raw = skb2->data; | |
746 | /* skb2->nh.raw = skb2->data + ETH_HLEN; */ | |
747 | skb2->dev = dev; | |
748 | dev_queue_xmit(skb2); | |
749 | } | |
b453872c JG |
750 | #endif |
751 | ||
752 | if (skb) { | |
753 | skb->protocol = eth_type_trans(skb, dev); | |
754 | memset(skb->cb, 0, sizeof(skb->cb)); | |
755 | skb->dev = dev; | |
0edd5b44 | 756 | skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ |
b453872c JG |
757 | netif_rx(skb); |
758 | } | |
759 | ||
0edd5b44 | 760 | rx_exit: |
b453872c JG |
761 | #ifdef NOT_YET |
762 | if (sta) | |
763 | hostap_handle_sta_release(sta); | |
764 | #endif | |
765 | return 1; | |
766 | ||
0edd5b44 | 767 | rx_dropped: |
b453872c JG |
768 | stats->rx_dropped++; |
769 | ||
770 | /* Returning 0 indicates to caller that we have not handled the SKB-- | |
771 | * so it is still allocated and can be used again by underlying | |
772 | * hardware as a DMA target */ | |
773 | return 0; | |
774 | } | |
775 | ||
776 | #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 | |
777 | ||
9e8571af JK |
778 | static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; |
779 | ||
780 | /* | |
781 | * Make ther structure we read from the beacon packet has | |
782 | * the right values | |
783 | */ | |
784 | static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element | |
785 | *info_element, int sub_type) | |
786 | { | |
787 | ||
788 | if (info_element->qui_subtype != sub_type) | |
789 | return -1; | |
790 | if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) | |
791 | return -1; | |
792 | if (info_element->qui_type != QOS_OUI_TYPE) | |
793 | return -1; | |
794 | if (info_element->version != QOS_VERSION_1) | |
795 | return -1; | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Parse a QoS parameter element | |
802 | */ | |
803 | static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info | |
804 | *element_param, struct ieee80211_info_element | |
805 | *info_element) | |
806 | { | |
807 | int ret = 0; | |
808 | u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; | |
809 | ||
810 | if ((info_element == NULL) || (element_param == NULL)) | |
811 | return -1; | |
812 | ||
813 | if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { | |
814 | memcpy(element_param->info_element.qui, info_element->data, | |
815 | info_element->len); | |
816 | element_param->info_element.elementID = info_element->id; | |
817 | element_param->info_element.length = info_element->len; | |
818 | } else | |
819 | ret = -1; | |
820 | if (ret == 0) | |
821 | ret = ieee80211_verify_qos_info(&element_param->info_element, | |
822 | QOS_OUI_PARAM_SUB_TYPE); | |
823 | return ret; | |
824 | } | |
825 | ||
826 | /* | |
827 | * Parse a QoS information element | |
828 | */ | |
829 | static int ieee80211_read_qos_info_element(struct | |
830 | ieee80211_qos_information_element | |
831 | *element_info, struct ieee80211_info_element | |
832 | *info_element) | |
833 | { | |
834 | int ret = 0; | |
835 | u16 size = sizeof(struct ieee80211_qos_information_element) - 2; | |
836 | ||
837 | if (element_info == NULL) | |
838 | return -1; | |
839 | if (info_element == NULL) | |
840 | return -1; | |
841 | ||
842 | if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { | |
843 | memcpy(element_info->qui, info_element->data, | |
844 | info_element->len); | |
845 | element_info->elementID = info_element->id; | |
846 | element_info->length = info_element->len; | |
847 | } else | |
848 | ret = -1; | |
849 | ||
850 | if (ret == 0) | |
851 | ret = ieee80211_verify_qos_info(element_info, | |
852 | QOS_OUI_INFO_SUB_TYPE); | |
853 | return ret; | |
854 | } | |
855 | ||
856 | /* | |
857 | * Write QoS parameters from the ac parameters. | |
858 | */ | |
859 | static int ieee80211_qos_convert_ac_to_parameters(struct | |
860 | ieee80211_qos_parameter_info | |
861 | *param_elm, struct | |
862 | ieee80211_qos_parameters | |
863 | *qos_param) | |
864 | { | |
865 | int rc = 0; | |
866 | int i; | |
867 | struct ieee80211_qos_ac_parameter *ac_params; | |
868 | u32 txop; | |
869 | u8 cw_min; | |
870 | u8 cw_max; | |
871 | ||
872 | for (i = 0; i < QOS_QUEUE_NUM; i++) { | |
873 | ac_params = &(param_elm->ac_params_record[i]); | |
874 | ||
875 | qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F; | |
876 | qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2; | |
877 | ||
878 | cw_min = ac_params->ecw_min_max & 0x0F; | |
879 | qos_param->cw_min[i] = (u16) ((1 << cw_min) - 1); | |
880 | ||
881 | cw_max = (ac_params->ecw_min_max & 0xF0) >> 4; | |
882 | qos_param->cw_max[i] = (u16) ((1 << cw_max) - 1); | |
883 | ||
884 | qos_param->flag[i] = | |
885 | (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; | |
886 | ||
887 | txop = le16_to_cpu(ac_params->tx_op_limit) * 32; | |
888 | qos_param->tx_op_limit[i] = (u16) txop; | |
889 | } | |
890 | return rc; | |
891 | } | |
892 | ||
893 | /* | |
894 | * we have a generic data element which it may contain QoS information or | |
895 | * parameters element. check the information element length to decide | |
896 | * which type to read | |
897 | */ | |
898 | static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element | |
899 | *info_element, | |
900 | struct ieee80211_network *network) | |
901 | { | |
902 | int rc = 0; | |
903 | struct ieee80211_qos_parameters *qos_param = NULL; | |
904 | struct ieee80211_qos_information_element qos_info_element; | |
905 | ||
906 | rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); | |
907 | ||
908 | if (rc == 0) { | |
909 | network->qos_data.param_count = qos_info_element.ac_info & 0x0F; | |
910 | network->flags |= NETWORK_HAS_QOS_INFORMATION; | |
911 | } else { | |
912 | struct ieee80211_qos_parameter_info param_element; | |
913 | ||
914 | rc = ieee80211_read_qos_param_element(¶m_element, | |
915 | info_element); | |
916 | if (rc == 0) { | |
917 | qos_param = &(network->qos_data.parameters); | |
918 | ieee80211_qos_convert_ac_to_parameters(¶m_element, | |
919 | qos_param); | |
920 | network->flags |= NETWORK_HAS_QOS_PARAMETERS; | |
921 | network->qos_data.param_count = | |
922 | param_element.info_element.ac_info & 0x0F; | |
923 | } | |
924 | } | |
925 | ||
926 | if (rc == 0) { | |
927 | IEEE80211_DEBUG_QOS("QoS is supported\n"); | |
928 | network->qos_data.supported = 1; | |
929 | } | |
930 | return rc; | |
931 | } | |
932 | ||
ff0037b2 JK |
933 | static int ieee80211_parse_info_param(struct ieee80211_info_element |
934 | *info_element, u16 length, | |
935 | struct ieee80211_network *network) | |
b453872c | 936 | { |
ff9e00f1 | 937 | u8 i; |
b453872c JG |
938 | #ifdef CONFIG_IEEE80211_DEBUG |
939 | char rates_str[64]; | |
940 | char *p; | |
941 | #endif | |
b453872c | 942 | |
ff9e00f1 ID |
943 | while (length >= sizeof(*info_element)) { |
944 | if (sizeof(*info_element) + info_element->len > length) { | |
945 | IEEE80211_DEBUG_MGMT("Info elem: parse failed: " | |
ff0037b2 JK |
946 | "info_element->len + 2 > left : " |
947 | "info_element->len+2=%zd left=%d, id=%d.\n", | |
948 | info_element->len + | |
949 | sizeof(*info_element), | |
950 | length, info_element->id); | |
b453872c | 951 | return 1; |
0edd5b44 | 952 | } |
b453872c JG |
953 | |
954 | switch (info_element->id) { | |
955 | case MFIE_TYPE_SSID: | |
956 | if (ieee80211_is_empty_essid(info_element->data, | |
957 | info_element->len)) { | |
958 | network->flags |= NETWORK_EMPTY_ESSID; | |
959 | break; | |
960 | } | |
961 | ||
962 | network->ssid_len = min(info_element->len, | |
0edd5b44 JG |
963 | (u8) IW_ESSID_MAX_SIZE); |
964 | memcpy(network->ssid, info_element->data, | |
965 | network->ssid_len); | |
966 | if (network->ssid_len < IW_ESSID_MAX_SIZE) | |
967 | memset(network->ssid + network->ssid_len, 0, | |
b453872c JG |
968 | IW_ESSID_MAX_SIZE - network->ssid_len); |
969 | ||
ff9e00f1 | 970 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", |
ff0037b2 | 971 | network->ssid, network->ssid_len); |
b453872c JG |
972 | break; |
973 | ||
974 | case MFIE_TYPE_RATES: | |
975 | #ifdef CONFIG_IEEE80211_DEBUG | |
976 | p = rates_str; | |
977 | #endif | |
9e8571af JK |
978 | network->rates_len = min(info_element->len, |
979 | MAX_RATES_LENGTH); | |
b453872c JG |
980 | for (i = 0; i < network->rates_len; i++) { |
981 | network->rates[i] = info_element->data[i]; | |
982 | #ifdef CONFIG_IEEE80211_DEBUG | |
9e8571af JK |
983 | p += snprintf(p, sizeof(rates_str) - |
984 | (p - rates_str), "%02X ", | |
985 | network->rates[i]); | |
b453872c | 986 | #endif |
0edd5b44 JG |
987 | if (ieee80211_is_ofdm_rate |
988 | (info_element->data[i])) { | |
b453872c JG |
989 | network->flags |= NETWORK_HAS_OFDM; |
990 | if (info_element->data[i] & | |
991 | IEEE80211_BASIC_RATE_MASK) | |
992 | network->flags &= | |
0edd5b44 | 993 | ~NETWORK_HAS_CCK; |
b453872c JG |
994 | } |
995 | } | |
996 | ||
ff9e00f1 | 997 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", |
b453872c JG |
998 | rates_str, network->rates_len); |
999 | break; | |
1000 | ||
1001 | case MFIE_TYPE_RATES_EX: | |
1002 | #ifdef CONFIG_IEEE80211_DEBUG | |
1003 | p = rates_str; | |
1004 | #endif | |
9e8571af JK |
1005 | network->rates_ex_len = min(info_element->len, |
1006 | MAX_RATES_EX_LENGTH); | |
b453872c JG |
1007 | for (i = 0; i < network->rates_ex_len; i++) { |
1008 | network->rates_ex[i] = info_element->data[i]; | |
1009 | #ifdef CONFIG_IEEE80211_DEBUG | |
9e8571af JK |
1010 | p += snprintf(p, sizeof(rates_str) - |
1011 | (p - rates_str), "%02X ", | |
1012 | network->rates[i]); | |
b453872c | 1013 | #endif |
0edd5b44 JG |
1014 | if (ieee80211_is_ofdm_rate |
1015 | (info_element->data[i])) { | |
b453872c JG |
1016 | network->flags |= NETWORK_HAS_OFDM; |
1017 | if (info_element->data[i] & | |
1018 | IEEE80211_BASIC_RATE_MASK) | |
1019 | network->flags &= | |
0edd5b44 | 1020 | ~NETWORK_HAS_CCK; |
b453872c JG |
1021 | } |
1022 | } | |
1023 | ||
ff9e00f1 | 1024 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", |
b453872c JG |
1025 | rates_str, network->rates_ex_len); |
1026 | break; | |
1027 | ||
1028 | case MFIE_TYPE_DS_SET: | |
ff9e00f1 | 1029 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", |
b453872c | 1030 | info_element->data[0]); |
ff9e00f1 | 1031 | network->channel = info_element->data[0]; |
b453872c JG |
1032 | break; |
1033 | ||
0edd5b44 | 1034 | case MFIE_TYPE_FH_SET: |
ff9e00f1 | 1035 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); |
b453872c JG |
1036 | break; |
1037 | ||
1038 | case MFIE_TYPE_CF_SET: | |
ff9e00f1 | 1039 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); |
b453872c JG |
1040 | break; |
1041 | ||
1042 | case MFIE_TYPE_TIM: | |
ff9e00f1 | 1043 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: ignored\n"); |
b453872c JG |
1044 | break; |
1045 | ||
42c94e43 JK |
1046 | case MFIE_TYPE_ERP_INFO: |
1047 | network->erp_value = info_element->data[0]; | |
ff9e00f1 | 1048 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", |
42c94e43 JK |
1049 | network->erp_value); |
1050 | break; | |
1051 | ||
b453872c | 1052 | case MFIE_TYPE_IBSS_SET: |
42c94e43 | 1053 | network->atim_window = info_element->data[0]; |
ff9e00f1 | 1054 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", |
42c94e43 | 1055 | network->atim_window); |
b453872c JG |
1056 | break; |
1057 | ||
1058 | case MFIE_TYPE_CHALLENGE: | |
ff9e00f1 | 1059 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); |
b453872c JG |
1060 | break; |
1061 | ||
1062 | case MFIE_TYPE_GENERIC: | |
ff9e00f1 | 1063 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", |
b453872c | 1064 | info_element->len); |
9e8571af JK |
1065 | if (!ieee80211_parse_qos_info_param_IE(info_element, |
1066 | network)) | |
1067 | break; | |
1068 | ||
0edd5b44 | 1069 | if (info_element->len >= 4 && |
b453872c JG |
1070 | info_element->data[0] == 0x00 && |
1071 | info_element->data[1] == 0x50 && | |
1072 | info_element->data[2] == 0xf2 && | |
1073 | info_element->data[3] == 0x01) { | |
1074 | network->wpa_ie_len = min(info_element->len + 2, | |
0edd5b44 | 1075 | MAX_WPA_IE_LEN); |
b453872c JG |
1076 | memcpy(network->wpa_ie, info_element, |
1077 | network->wpa_ie_len); | |
1078 | } | |
1079 | break; | |
1080 | ||
1081 | case MFIE_TYPE_RSN: | |
ff9e00f1 | 1082 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", |
b453872c JG |
1083 | info_element->len); |
1084 | network->rsn_ie_len = min(info_element->len + 2, | |
0edd5b44 | 1085 | MAX_WPA_IE_LEN); |
b453872c JG |
1086 | memcpy(network->rsn_ie, info_element, |
1087 | network->rsn_ie_len); | |
1088 | break; | |
1089 | ||
9e8571af | 1090 | case MFIE_TYPE_QOS_PARAMETER: |
ff0037b2 JK |
1091 | printk(KERN_ERR |
1092 | "QoS Error need to parse QOS_PARAMETER IE\n"); | |
9e8571af JK |
1093 | break; |
1094 | ||
b453872c | 1095 | default: |
ff9e00f1 | 1096 | IEEE80211_DEBUG_MGMT("unsupported IE %d\n", |
ff0037b2 | 1097 | info_element->id); |
0edd5b44 JG |
1098 | break; |
1099 | } | |
b453872c | 1100 | |
ff9e00f1 | 1101 | length -= sizeof(*info_element) + info_element->len; |
ff0037b2 JK |
1102 | info_element = |
1103 | (struct ieee80211_info_element *)&info_element-> | |
1104 | data[info_element->len]; | |
0edd5b44 | 1105 | } |
b453872c | 1106 | |
ff9e00f1 ID |
1107 | return 0; |
1108 | } | |
1109 | ||
1110 | static int ieee80211_handle_assoc_resp(struct ieee80211_device *ieee, struct ieee80211_assoc_response | |
1111 | *frame, struct ieee80211_rx_stats *stats) | |
1112 | { | |
1113 | struct ieee80211_network network_resp; | |
1114 | struct ieee80211_network *network = &network_resp; | |
1115 | struct net_device *dev = ieee->dev; | |
1116 | ||
1117 | network->flags = 0; | |
1118 | network->qos_data.active = 0; | |
1119 | network->qos_data.supported = 0; | |
1120 | network->qos_data.param_count = 0; | |
1121 | network->qos_data.old_param_count = 0; | |
1122 | ||
1123 | //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF); | |
1124 | network->atim_window = le16_to_cpu(frame->aid); | |
1125 | network->listen_interval = le16_to_cpu(frame->status); | |
c1bda44a ID |
1126 | memcpy(network->bssid, frame->header.addr3, ETH_ALEN); |
1127 | network->capability = le16_to_cpu(frame->capability); | |
1128 | network->last_scanned = jiffies; | |
1129 | network->rates_len = network->rates_ex_len = 0; | |
1130 | network->last_associate = 0; | |
1131 | network->ssid_len = 0; | |
ff0037b2 JK |
1132 | network->erp_value = |
1133 | (network->capability & WLAN_CAPABILITY_IBSS) ? 0x3 : 0x0; | |
c1bda44a ID |
1134 | |
1135 | if (stats->freq == IEEE80211_52GHZ_BAND) { | |
1136 | /* for A band (No DS info) */ | |
1137 | network->channel = stats->received_channel; | |
1138 | } else | |
1139 | network->flags |= NETWORK_HAS_CCK; | |
1140 | ||
1141 | network->wpa_ie_len = 0; | |
1142 | network->rsn_ie_len = 0; | |
ff9e00f1 | 1143 | |
ff0037b2 JK |
1144 | if (ieee80211_parse_info_param |
1145 | (frame->info_element, stats->len - sizeof(*frame), network)) | |
ff9e00f1 ID |
1146 | return 1; |
1147 | ||
c1bda44a ID |
1148 | network->mode = 0; |
1149 | if (stats->freq == IEEE80211_52GHZ_BAND) | |
1150 | network->mode = IEEE_A; | |
1151 | else { | |
1152 | if (network->flags & NETWORK_HAS_OFDM) | |
1153 | network->mode |= IEEE_G; | |
1154 | if (network->flags & NETWORK_HAS_CCK) | |
1155 | network->mode |= IEEE_B; | |
1156 | } | |
1157 | ||
1158 | if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) | |
1159 | network->flags |= NETWORK_EMPTY_ESSID; | |
1160 | ||
1161 | memcpy(&network->stats, stats, sizeof(network->stats)); | |
1162 | ||
ff9e00f1 ID |
1163 | if (ieee->handle_assoc_response != NULL) |
1164 | ieee->handle_assoc_response(dev, frame, network); | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | /***************************************************/ | |
1170 | ||
858119e1 | 1171 | static int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response |
ff9e00f1 ID |
1172 | *beacon, |
1173 | struct ieee80211_network *network, | |
1174 | struct ieee80211_rx_stats *stats) | |
1175 | { | |
1176 | network->qos_data.active = 0; | |
1177 | network->qos_data.supported = 0; | |
1178 | network->qos_data.param_count = 0; | |
c1bda44a | 1179 | network->qos_data.old_param_count = 0; |
ff9e00f1 ID |
1180 | |
1181 | /* Pull out fixed field data */ | |
1182 | memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); | |
1183 | network->capability = le16_to_cpu(beacon->capability); | |
1184 | network->last_scanned = jiffies; | |
1185 | network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); | |
1186 | network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); | |
1187 | network->beacon_interval = le16_to_cpu(beacon->beacon_interval); | |
1188 | /* Where to pull this? beacon->listen_interval; */ | |
1189 | network->listen_interval = 0x0A; | |
1190 | network->rates_len = network->rates_ex_len = 0; | |
1191 | network->last_associate = 0; | |
1192 | network->ssid_len = 0; | |
1193 | network->flags = 0; | |
1194 | network->atim_window = 0; | |
1195 | network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? | |
1196 | 0x3 : 0x0; | |
1197 | ||
1198 | if (stats->freq == IEEE80211_52GHZ_BAND) { | |
1199 | /* for A band (No DS info) */ | |
1200 | network->channel = stats->received_channel; | |
1201 | } else | |
1202 | network->flags |= NETWORK_HAS_CCK; | |
1203 | ||
1204 | network->wpa_ie_len = 0; | |
1205 | network->rsn_ie_len = 0; | |
1206 | ||
ff0037b2 JK |
1207 | if (ieee80211_parse_info_param |
1208 | (beacon->info_element, stats->len - sizeof(*beacon), network)) | |
ff9e00f1 ID |
1209 | return 1; |
1210 | ||
b453872c JG |
1211 | network->mode = 0; |
1212 | if (stats->freq == IEEE80211_52GHZ_BAND) | |
1213 | network->mode = IEEE_A; | |
1214 | else { | |
1215 | if (network->flags & NETWORK_HAS_OFDM) | |
1216 | network->mode |= IEEE_G; | |
1217 | if (network->flags & NETWORK_HAS_CCK) | |
1218 | network->mode |= IEEE_B; | |
1219 | } | |
1220 | ||
1221 | if (network->mode == 0) { | |
1222 | IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' " | |
1223 | "network.\n", | |
1224 | escape_essid(network->ssid, | |
1225 | network->ssid_len), | |
1226 | MAC_ARG(network->bssid)); | |
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) | |
1231 | network->flags |= NETWORK_EMPTY_ESSID; | |
1232 | ||
1233 | memcpy(&network->stats, stats, sizeof(network->stats)); | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
1238 | static inline int is_same_network(struct ieee80211_network *src, | |
1239 | struct ieee80211_network *dst) | |
1240 | { | |
1241 | /* A network is only a duplicate if the channel, BSSID, and ESSID | |
1242 | * all match. We treat all <hidden> with the same BSSID and channel | |
1243 | * as one network */ | |
1244 | return ((src->ssid_len == dst->ssid_len) && | |
1245 | (src->channel == dst->channel) && | |
d3f4a687 | 1246 | !compare_ether_addr(src->bssid, dst->bssid) && |
b453872c JG |
1247 | !memcmp(src->ssid, dst->ssid, src->ssid_len)); |
1248 | } | |
1249 | ||
858119e1 | 1250 | static void update_network(struct ieee80211_network *dst, |
b453872c JG |
1251 | struct ieee80211_network *src) |
1252 | { | |
9e8571af JK |
1253 | int qos_active; |
1254 | u8 old_param; | |
1255 | ||
b453872c JG |
1256 | memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); |
1257 | dst->capability = src->capability; | |
1258 | memcpy(dst->rates, src->rates, src->rates_len); | |
1259 | dst->rates_len = src->rates_len; | |
1260 | memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); | |
1261 | dst->rates_ex_len = src->rates_ex_len; | |
1262 | ||
1263 | dst->mode = src->mode; | |
1264 | dst->flags = src->flags; | |
1265 | dst->time_stamp[0] = src->time_stamp[0]; | |
1266 | dst->time_stamp[1] = src->time_stamp[1]; | |
1267 | ||
1268 | dst->beacon_interval = src->beacon_interval; | |
1269 | dst->listen_interval = src->listen_interval; | |
1270 | dst->atim_window = src->atim_window; | |
42c94e43 | 1271 | dst->erp_value = src->erp_value; |
b453872c JG |
1272 | |
1273 | memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); | |
1274 | dst->wpa_ie_len = src->wpa_ie_len; | |
1275 | memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); | |
1276 | dst->rsn_ie_len = src->rsn_ie_len; | |
1277 | ||
1278 | dst->last_scanned = jiffies; | |
9e8571af JK |
1279 | qos_active = src->qos_data.active; |
1280 | old_param = dst->qos_data.old_param_count; | |
1281 | if (dst->flags & NETWORK_HAS_QOS_MASK) | |
1282 | memcpy(&dst->qos_data, &src->qos_data, | |
1283 | sizeof(struct ieee80211_qos_data)); | |
1284 | else { | |
1285 | dst->qos_data.supported = src->qos_data.supported; | |
1286 | dst->qos_data.param_count = src->qos_data.param_count; | |
1287 | } | |
1288 | ||
1289 | if (dst->qos_data.supported == 1) { | |
1290 | if (dst->ssid_len) | |
1291 | IEEE80211_DEBUG_QOS | |
1292 | ("QoS the network %s is QoS supported\n", | |
1293 | dst->ssid); | |
1294 | else | |
1295 | IEEE80211_DEBUG_QOS | |
1296 | ("QoS the network is QoS supported\n"); | |
1297 | } | |
1298 | dst->qos_data.active = qos_active; | |
1299 | dst->qos_data.old_param_count = old_param; | |
1300 | ||
b453872c JG |
1301 | /* dst->last_associate is not overwritten */ |
1302 | } | |
1303 | ||
3f552bbf JK |
1304 | static inline int is_beacon(int fc) |
1305 | { | |
1306 | return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); | |
1307 | } | |
1308 | ||
858119e1 | 1309 | static void ieee80211_process_probe_response(struct ieee80211_device |
74079fdc | 1310 | *ieee, struct |
0edd5b44 | 1311 | ieee80211_probe_response |
74079fdc | 1312 | *beacon, struct ieee80211_rx_stats |
0edd5b44 | 1313 | *stats) |
b453872c | 1314 | { |
3f552bbf | 1315 | struct net_device *dev = ieee->dev; |
b453872c JG |
1316 | struct ieee80211_network network; |
1317 | struct ieee80211_network *target; | |
1318 | struct ieee80211_network *oldest = NULL; | |
1319 | #ifdef CONFIG_IEEE80211_DEBUG | |
68e4e036 | 1320 | struct ieee80211_info_element *info_element = beacon->info_element; |
b453872c JG |
1321 | #endif |
1322 | unsigned long flags; | |
1323 | ||
0edd5b44 JG |
1324 | IEEE80211_DEBUG_SCAN("'%s' (" MAC_FMT |
1325 | "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", | |
1326 | escape_essid(info_element->data, | |
1327 | info_element->len), | |
1328 | MAC_ARG(beacon->header.addr3), | |
1329 | (beacon->capability & (1 << 0xf)) ? '1' : '0', | |
1330 | (beacon->capability & (1 << 0xe)) ? '1' : '0', | |
1331 | (beacon->capability & (1 << 0xd)) ? '1' : '0', | |
1332 | (beacon->capability & (1 << 0xc)) ? '1' : '0', | |
1333 | (beacon->capability & (1 << 0xb)) ? '1' : '0', | |
1334 | (beacon->capability & (1 << 0xa)) ? '1' : '0', | |
1335 | (beacon->capability & (1 << 0x9)) ? '1' : '0', | |
1336 | (beacon->capability & (1 << 0x8)) ? '1' : '0', | |
1337 | (beacon->capability & (1 << 0x7)) ? '1' : '0', | |
1338 | (beacon->capability & (1 << 0x6)) ? '1' : '0', | |
1339 | (beacon->capability & (1 << 0x5)) ? '1' : '0', | |
1340 | (beacon->capability & (1 << 0x4)) ? '1' : '0', | |
1341 | (beacon->capability & (1 << 0x3)) ? '1' : '0', | |
1342 | (beacon->capability & (1 << 0x2)) ? '1' : '0', | |
1343 | (beacon->capability & (1 << 0x1)) ? '1' : '0', | |
1344 | (beacon->capability & (1 << 0x0)) ? '1' : '0'); | |
b453872c JG |
1345 | |
1346 | if (ieee80211_network_init(ieee, beacon, &network, stats)) { | |
1347 | IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n", | |
1348 | escape_essid(info_element->data, | |
1349 | info_element->len), | |
1350 | MAC_ARG(beacon->header.addr3), | |
3f552bbf JK |
1351 | is_beacon(le16_to_cpu |
1352 | (beacon->header. | |
1353 | frame_ctl)) ? | |
1354 | "BEACON" : "PROBE RESPONSE"); | |
b453872c JG |
1355 | return; |
1356 | } | |
1357 | ||
1358 | /* The network parsed correctly -- so now we scan our known networks | |
1359 | * to see if we can find it in our list. | |
1360 | * | |
1361 | * NOTE: This search is definitely not optimized. Once its doing | |
1362 | * the "right thing" we'll optimize it for efficiency if | |
1363 | * necessary */ | |
1364 | ||
1365 | /* Search for this entry in the list and update it if it is | |
1366 | * already there. */ | |
1367 | ||
1368 | spin_lock_irqsave(&ieee->lock, flags); | |
1369 | ||
1370 | list_for_each_entry(target, &ieee->network_list, list) { | |
1371 | if (is_same_network(target, &network)) | |
1372 | break; | |
1373 | ||
1374 | if ((oldest == NULL) || | |
1375 | (target->last_scanned < oldest->last_scanned)) | |
1376 | oldest = target; | |
1377 | } | |
1378 | ||
1379 | /* If we didn't find a match, then get a new network slot to initialize | |
1380 | * with this beacon's information */ | |
1381 | if (&target->list == &ieee->network_list) { | |
1382 | if (list_empty(&ieee->network_free_list)) { | |
1383 | /* If there are no more slots, expire the oldest */ | |
1384 | list_del(&oldest->list); | |
1385 | target = oldest; | |
1386 | IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from " | |
1387 | "network list.\n", | |
1388 | escape_essid(target->ssid, | |
1389 | target->ssid_len), | |
1390 | MAC_ARG(target->bssid)); | |
1391 | } else { | |
1392 | /* Otherwise just pull from the free list */ | |
1393 | target = list_entry(ieee->network_free_list.next, | |
1394 | struct ieee80211_network, list); | |
1395 | list_del(ieee->network_free_list.next); | |
1396 | } | |
1397 | ||
b453872c JG |
1398 | #ifdef CONFIG_IEEE80211_DEBUG |
1399 | IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n", | |
1400 | escape_essid(network.ssid, | |
1401 | network.ssid_len), | |
1402 | MAC_ARG(network.bssid), | |
3f552bbf JK |
1403 | is_beacon(le16_to_cpu |
1404 | (beacon->header. | |
1405 | frame_ctl)) ? | |
1406 | "BEACON" : "PROBE RESPONSE"); | |
b453872c JG |
1407 | #endif |
1408 | memcpy(target, &network, sizeof(*target)); | |
1409 | list_add_tail(&target->list, &ieee->network_list); | |
1410 | } else { | |
1411 | IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n", | |
1412 | escape_essid(target->ssid, | |
1413 | target->ssid_len), | |
1414 | MAC_ARG(target->bssid), | |
3f552bbf JK |
1415 | is_beacon(le16_to_cpu |
1416 | (beacon->header. | |
1417 | frame_ctl)) ? | |
1418 | "BEACON" : "PROBE RESPONSE"); | |
b453872c JG |
1419 | update_network(target, &network); |
1420 | } | |
1421 | ||
1422 | spin_unlock_irqrestore(&ieee->lock, flags); | |
3f552bbf JK |
1423 | |
1424 | if (is_beacon(le16_to_cpu(beacon->header.frame_ctl))) { | |
1425 | if (ieee->handle_beacon != NULL) | |
1426 | ieee->handle_beacon(dev, beacon, &network); | |
1427 | } else { | |
1428 | if (ieee->handle_probe_response != NULL) | |
1429 | ieee->handle_probe_response(dev, beacon, &network); | |
1430 | } | |
b453872c JG |
1431 | } |
1432 | ||
1433 | void ieee80211_rx_mgt(struct ieee80211_device *ieee, | |
ee34af37 | 1434 | struct ieee80211_hdr_4addr *header, |
b453872c JG |
1435 | struct ieee80211_rx_stats *stats) |
1436 | { | |
fd27817c | 1437 | switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) { |
b453872c JG |
1438 | case IEEE80211_STYPE_ASSOC_RESP: |
1439 | IEEE80211_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n", | |
fd27817c JK |
1440 | WLAN_FC_GET_STYPE(le16_to_cpu |
1441 | (header->frame_ctl))); | |
9e8571af JK |
1442 | ieee80211_handle_assoc_resp(ieee, |
1443 | (struct ieee80211_assoc_response *) | |
1444 | header, stats); | |
b453872c JG |
1445 | break; |
1446 | ||
1447 | case IEEE80211_STYPE_REASSOC_RESP: | |
1448 | IEEE80211_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n", | |
fd27817c JK |
1449 | WLAN_FC_GET_STYPE(le16_to_cpu |
1450 | (header->frame_ctl))); | |
b453872c JG |
1451 | break; |
1452 | ||
42c94e43 JK |
1453 | case IEEE80211_STYPE_PROBE_REQ: |
1454 | IEEE80211_DEBUG_MGMT("recieved auth (%d)\n", | |
1455 | WLAN_FC_GET_STYPE(le16_to_cpu | |
1456 | (header->frame_ctl))); | |
1457 | ||
1458 | if (ieee->handle_probe_request != NULL) | |
1459 | ieee->handle_probe_request(ieee->dev, | |
1460 | (struct | |
1461 | ieee80211_probe_request *) | |
1462 | header, stats); | |
1463 | break; | |
1464 | ||
b453872c JG |
1465 | case IEEE80211_STYPE_PROBE_RESP: |
1466 | IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", | |
fd27817c JK |
1467 | WLAN_FC_GET_STYPE(le16_to_cpu |
1468 | (header->frame_ctl))); | |
b453872c | 1469 | IEEE80211_DEBUG_SCAN("Probe response\n"); |
0edd5b44 JG |
1470 | ieee80211_process_probe_response(ieee, |
1471 | (struct | |
1472 | ieee80211_probe_response *) | |
1473 | header, stats); | |
b453872c JG |
1474 | break; |
1475 | ||
1476 | case IEEE80211_STYPE_BEACON: | |
1477 | IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", | |
fd27817c JK |
1478 | WLAN_FC_GET_STYPE(le16_to_cpu |
1479 | (header->frame_ctl))); | |
b453872c | 1480 | IEEE80211_DEBUG_SCAN("Beacon\n"); |
0edd5b44 JG |
1481 | ieee80211_process_probe_response(ieee, |
1482 | (struct | |
1483 | ieee80211_probe_response *) | |
1484 | header, stats); | |
b453872c | 1485 | break; |
3f552bbf JK |
1486 | case IEEE80211_STYPE_AUTH: |
1487 | ||
1488 | IEEE80211_DEBUG_MGMT("recieved auth (%d)\n", | |
1489 | WLAN_FC_GET_STYPE(le16_to_cpu | |
1490 | (header->frame_ctl))); | |
1491 | ||
1492 | if (ieee->handle_auth != NULL) | |
1493 | ieee->handle_auth(ieee->dev, | |
1494 | (struct ieee80211_auth *)header); | |
1495 | break; | |
1496 | ||
1497 | case IEEE80211_STYPE_DISASSOC: | |
1498 | if (ieee->handle_disassoc != NULL) | |
1499 | ieee->handle_disassoc(ieee->dev, | |
1500 | (struct ieee80211_disassoc *) | |
1501 | header); | |
1502 | break; | |
b453872c | 1503 | |
31b59eae JK |
1504 | case IEEE80211_STYPE_DEAUTH: |
1505 | printk("DEAUTH from AP\n"); | |
1506 | if (ieee->handle_deauth != NULL) | |
1507 | ieee->handle_deauth(ieee->dev, (struct ieee80211_auth *) | |
1508 | header); | |
1509 | break; | |
b453872c JG |
1510 | default: |
1511 | IEEE80211_DEBUG_MGMT("received UNKNOWN (%d)\n", | |
fd27817c JK |
1512 | WLAN_FC_GET_STYPE(le16_to_cpu |
1513 | (header->frame_ctl))); | |
b453872c JG |
1514 | IEEE80211_WARNING("%s: Unknown management packet: %d\n", |
1515 | ieee->dev->name, | |
fd27817c JK |
1516 | WLAN_FC_GET_STYPE(le16_to_cpu |
1517 | (header->frame_ctl))); | |
b453872c JG |
1518 | break; |
1519 | } | |
1520 | } | |
1521 | ||
b453872c JG |
1522 | EXPORT_SYMBOL(ieee80211_rx_mgt); |
1523 | EXPORT_SYMBOL(ieee80211_rx); |