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>
8 * Copyright (c) 2004, 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 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
18
19 A special thanks goes to Realtek for their support !
20
21 ******************************************************************************/
22
23
24 #include <linux/compiler.h>
25 //#include <linux/config.h>
26 #include <linux/errno.h>
27 #include <linux/if_arp.h>
28 #include <linux/in6.h>
29 #include <linux/in.h>
30 #include <linux/ip.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/netdevice.h>
34 #include <linux/pci.h>
35 #include <linux/proc_fs.h>
36 #include <linux/skbuff.h>
37 #include <linux/slab.h>
38 #include <linux/tcp.h>
39 #include <linux/types.h>
40 #include <linux/version.h>
41 #include <linux/wireless.h>
42 #include <linux/etherdevice.h>
43 #include <asm/uaccess.h>
44 #include <linux/ctype.h>
45
46 #include "ieee80211.h"
47 #ifdef ENABLE_DOT11D
48 #include "dot11d.h"
49 #endif
50 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
51 struct sk_buff *skb,
52 struct ieee80211_rx_stats *rx_stats)
53 {
54 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
55 u16 fc = le16_to_cpu(hdr->frame_ctl);
56
57 skb->dev = ieee->dev;
58 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
59 skb_reset_mac_header(skb);
60 #else
61 skb->mac.raw = skb->data;
62 #endif
63
64 skb_pull(skb, ieee80211_get_hdrlen(fc));
65 skb->pkt_type = PACKET_OTHERHOST;
66 skb->protocol = __constant_htons(ETH_P_80211_RAW);
67 memset(skb->cb, 0, sizeof(skb->cb));
68 netif_rx(skb);
69 }
70
71
72 /* Called only as a tasklet (software IRQ) */
73 static struct ieee80211_frag_entry *
74 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
75 unsigned int frag, u8 tid,u8 *src, u8 *dst)
76 {
77 struct ieee80211_frag_entry *entry;
78 int i;
79
80 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
81 entry = &ieee->frag_cache[tid][i];
82 if (entry->skb != NULL &&
83 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
84 IEEE80211_DEBUG_FRAG(
85 "expiring fragment cache entry "
86 "seq=%u last_frag=%u\n",
87 entry->seq, entry->last_frag);
88 dev_kfree_skb_any(entry->skb);
89 entry->skb = NULL;
90 }
91
92 if (entry->skb != NULL && entry->seq == seq &&
93 (entry->last_frag + 1 == frag || frag == -1) &&
94 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
95 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
96 return entry;
97 }
98
99 return NULL;
100 }
101
102 /* Called only as a tasklet (software IRQ) */
103 static struct sk_buff *
104 ieee80211_frag_cache_get(struct ieee80211_device *ieee,
105 struct ieee80211_hdr_4addr *hdr)
106 {
107 struct sk_buff *skb = NULL;
108 u16 fc = le16_to_cpu(hdr->frame_ctl);
109 u16 sc = le16_to_cpu(hdr->seq_ctl);
110 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
111 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
112 struct ieee80211_frag_entry *entry;
113 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
114 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
115 u8 tid;
116
117 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
118 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
119 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
120 tid = UP2AC(tid);
121 tid ++;
122 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
123 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
124 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
125 tid = UP2AC(tid);
126 tid ++;
127 } else {
128 tid = 0;
129 }
130
131 if (frag == 0) {
132 /* Reserve enough space to fit maximum frame length */
133 skb = dev_alloc_skb(ieee->dev->mtu +
134 sizeof(struct ieee80211_hdr_4addr) +
135 8 /* LLC */ +
136 2 /* alignment */ +
137 8 /* WEP */ +
138 ETH_ALEN /* WDS */ +
139 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
140 if (skb == NULL)
141 return NULL;
142
143 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
144 ieee->frag_next_idx[tid]++;
145 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
146 ieee->frag_next_idx[tid] = 0;
147
148 if (entry->skb != NULL)
149 dev_kfree_skb_any(entry->skb);
150
151 entry->first_frag_time = jiffies;
152 entry->seq = seq;
153 entry->last_frag = frag;
154 entry->skb = skb;
155 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
156 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
157 } else {
158 /* received a fragment of a frame for which the head fragment
159 * should have already been received */
160 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
161 hdr->addr1);
162 if (entry != NULL) {
163 entry->last_frag = frag;
164 skb = entry->skb;
165 }
166 }
167
168 return skb;
169 }
170
171
172 /* Called only as a tasklet (software IRQ) */
173 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
174 struct ieee80211_hdr_4addr *hdr)
175 {
176 u16 fc = le16_to_cpu(hdr->frame_ctl);
177 u16 sc = le16_to_cpu(hdr->seq_ctl);
178 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
179 struct ieee80211_frag_entry *entry;
180 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
181 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
182 u8 tid;
183
184 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
185 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
186 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
187 tid = UP2AC(tid);
188 tid ++;
189 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
190 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
191 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
192 tid = UP2AC(tid);
193 tid ++;
194 } else {
195 tid = 0;
196 }
197
198 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
199 hdr->addr1);
200
201 if (entry == NULL) {
202 IEEE80211_DEBUG_FRAG(
203 "could not invalidate fragment cache "
204 "entry (seq=%u)\n", seq);
205 return -1;
206 }
207
208 entry->skb = NULL;
209 return 0;
210 }
211
212
213
214 /* ieee80211_rx_frame_mgtmt
215 *
216 * Responsible for handling management control frames
217 *
218 * Called by ieee80211_rx */
219 static inline int
220 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
221 struct ieee80211_rx_stats *rx_stats, u16 type,
222 u16 stype)
223 {
224 /* On the struct stats definition there is written that
225 * this is not mandatory.... but seems that the probe
226 * response parser uses it
227 */
228 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
229
230 rx_stats->len = skb->len;
231 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
232 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN)))
233 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames
234 {
235 dev_kfree_skb_any(skb);
236 return 0;
237 }
238
239 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
240
241 dev_kfree_skb_any(skb);
242
243 return 0;
244
245 #ifdef NOT_YET
246 if (ieee->iw_mode == IW_MODE_MASTER) {
247 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
248 ieee->dev->name);
249 return 0;
250 /*
251 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
252 skb->data);*/
253 }
254
255 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
256 if (stype == WLAN_FC_STYPE_BEACON &&
257 ieee->iw_mode == IW_MODE_MASTER) {
258 struct sk_buff *skb2;
259 /* Process beacon frames also in kernel driver to
260 * update STA(AP) table statistics */
261 skb2 = skb_clone(skb, GFP_ATOMIC);
262 if (skb2)
263 hostap_rx(skb2->dev, skb2, rx_stats);
264 }
265
266 /* send management frames to the user space daemon for
267 * processing */
268 ieee->apdevstats.rx_packets++;
269 ieee->apdevstats.rx_bytes += skb->len;
270 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
271 return 0;
272 }
273
274 if (ieee->iw_mode == IW_MODE_MASTER) {
275 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
276 printk(KERN_DEBUG "%s: unknown management frame "
277 "(type=0x%02x, stype=0x%02x) dropped\n",
278 skb->dev->name, type, stype);
279 return -1;
280 }
281
282 hostap_rx(skb->dev, skb, rx_stats);
283 return 0;
284 }
285
286 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
287 "received in non-Host AP mode\n", skb->dev->name);
288 return -1;
289 #endif
290 }
291
292
293
294 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
295 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
296 static unsigned char rfc1042_header[] =
297 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
298 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
299 static unsigned char bridge_tunnel_header[] =
300 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
301 /* No encapsulation header if EtherType < 0x600 (=length) */
302
303 /* Called by ieee80211_rx_frame_decrypt */
304 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
305 struct sk_buff *skb, size_t hdrlen)
306 {
307 struct net_device *dev = ieee->dev;
308 u16 fc, ethertype;
309 struct ieee80211_hdr_4addr *hdr;
310 u8 *pos;
311
312 if (skb->len < 24)
313 return 0;
314
315 hdr = (struct ieee80211_hdr_4addr *) skb->data;
316 fc = le16_to_cpu(hdr->frame_ctl);
317
318 /* check that the frame is unicast frame to us */
319 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
320 IEEE80211_FCTL_TODS &&
321 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
322 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
323 /* ToDS frame with own addr BSSID and DA */
324 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
325 IEEE80211_FCTL_FROMDS &&
326 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
327 /* FromDS frame with own addr as DA */
328 } else
329 return 0;
330
331 if (skb->len < 24 + 8)
332 return 0;
333
334 /* check for port access entity Ethernet type */
335 // pos = skb->data + 24;
336 pos = skb->data + hdrlen;
337 ethertype = (pos[6] << 8) | pos[7];
338 if (ethertype == ETH_P_PAE)
339 return 1;
340
341 return 0;
342 }
343
344 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
345 static inline int
346 ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
347 struct ieee80211_crypt_data *crypt)
348 {
349 struct ieee80211_hdr_4addr *hdr;
350 int res, hdrlen;
351
352 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
353 return 0;
354 #if 1
355 if (ieee->hwsec_active)
356 {
357 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
358 tcb_desc->bHwSec = 1;
359 }
360 #endif
361 hdr = (struct ieee80211_hdr_4addr *) skb->data;
362 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
363
364 #ifdef CONFIG_IEEE80211_CRYPT_TKIP
365 if (ieee->tkip_countermeasures &&
366 strcmp(crypt->ops->name, "TKIP") == 0) {
367 if (net_ratelimit()) {
368 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
369 "received packet from " MAC_FMT "\n",
370 ieee->dev->name, MAC_ARG(hdr->addr2));
371 }
372 return -1;
373 }
374 #endif
375
376 atomic_inc(&crypt->refcnt);
377 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
378 atomic_dec(&crypt->refcnt);
379 if (res < 0) {
380 IEEE80211_DEBUG_DROP(
381 "decryption failed (SA=" MAC_FMT
382 ") res=%d\n", MAC_ARG(hdr->addr2), res);
383 if (res == -2)
384 IEEE80211_DEBUG_DROP("Decryption failed ICV "
385 "mismatch (key %d)\n",
386 skb->data[hdrlen + 3] >> 6);
387 ieee->ieee_stats.rx_discards_undecryptable++;
388 return -1;
389 }
390
391 return res;
392 }
393
394
395 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
396 static inline int
397 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
398 int keyidx, struct ieee80211_crypt_data *crypt)
399 {
400 struct ieee80211_hdr_4addr *hdr;
401 int res, hdrlen;
402
403 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
404 return 0;
405 if (ieee->hwsec_active)
406 {
407 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
408 tcb_desc->bHwSec = 1;
409 }
410
411 hdr = (struct ieee80211_hdr_4addr *) skb->data;
412 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
413
414 atomic_inc(&crypt->refcnt);
415 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
416 atomic_dec(&crypt->refcnt);
417 if (res < 0) {
418 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
419 " (SA=" MAC_FMT " keyidx=%d)\n",
420 ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
421 return -1;
422 }
423
424 return 0;
425 }
426
427
428 /* this function is stolen from ipw2200 driver*/
429 #define IEEE_PACKET_RETRY_TIME (5*HZ)
430 static int is_duplicate_packet(struct ieee80211_device *ieee,
431 struct ieee80211_hdr_4addr *header)
432 {
433 u16 fc = le16_to_cpu(header->frame_ctl);
434 u16 sc = le16_to_cpu(header->seq_ctl);
435 u16 seq = WLAN_GET_SEQ_SEQ(sc);
436 u16 frag = WLAN_GET_SEQ_FRAG(sc);
437 u16 *last_seq, *last_frag;
438 unsigned long *last_time;
439 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
440 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
441 u8 tid;
442
443
444 //TO2DS and QoS
445 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
446 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
447 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
448 tid = UP2AC(tid);
449 tid ++;
450 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
451 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
452 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
453 tid = UP2AC(tid);
454 tid ++;
455 } else { // no QoS
456 tid = 0;
457 }
458
459 switch (ieee->iw_mode) {
460 case IW_MODE_ADHOC:
461 {
462 struct list_head *p;
463 struct ieee_ibss_seq *entry = NULL;
464 u8 *mac = header->addr2;
465 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
466 //for (pos = (head)->next; pos != (head); pos = pos->next)
467 //__list_for_each(p, &ieee->ibss_mac_hash[index]) {
468 list_for_each(p, &ieee->ibss_mac_hash[index]) {
469 entry = list_entry(p, struct ieee_ibss_seq, list);
470 if (!memcmp(entry->mac, mac, ETH_ALEN))
471 break;
472 }
473 // if (memcmp(entry->mac, mac, ETH_ALEN)){
474 if (p == &ieee->ibss_mac_hash[index]) {
475 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
476 if (!entry) {
477 printk(KERN_WARNING "Cannot malloc new mac entry\n");
478 return 0;
479 }
480 memcpy(entry->mac, mac, ETH_ALEN);
481 entry->seq_num[tid] = seq;
482 entry->frag_num[tid] = frag;
483 entry->packet_time[tid] = jiffies;
484 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
485 return 0;
486 }
487 last_seq = &entry->seq_num[tid];
488 last_frag = &entry->frag_num[tid];
489 last_time = &entry->packet_time[tid];
490 break;
491 }
492
493 case IW_MODE_INFRA:
494 last_seq = &ieee->last_rxseq_num[tid];
495 last_frag = &ieee->last_rxfrag_num[tid];
496 last_time = &ieee->last_packet_time[tid];
497
498 break;
499 default:
500 return 0;
501 }
502
503 // if(tid != 0) {
504 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
505 // }
506 if ((*last_seq == seq) &&
507 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
508 if (*last_frag == frag){
509 //printk(KERN_WARNING "[1] go drop!\n");
510 goto drop;
511
512 }
513 if (*last_frag + 1 != frag)
514 /* out-of-order fragment */
515 //printk(KERN_WARNING "[2] go drop!\n");
516 goto drop;
517 } else
518 *last_seq = seq;
519
520 *last_frag = frag;
521 *last_time = jiffies;
522 return 0;
523
524 drop:
525 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
526 // printk("DUP\n");
527
528 return 1;
529 }
530 bool
531 AddReorderEntry(
532 PRX_TS_RECORD pTS,
533 PRX_REORDER_ENTRY pReorderEntry
534 )
535 {
536 struct list_head *pList = &pTS->RxPendingPktList;
537 #if 1
538 while(pList->next != &pTS->RxPendingPktList)
539 {
540 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
541 {
542 pList = pList->next;
543 }
544 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
545 {
546 return false;
547 }
548 else
549 {
550 break;
551 }
552 }
553 #endif
554 pReorderEntry->List.next = pList->next;
555 pReorderEntry->List.next->prev = &pReorderEntry->List;
556 pReorderEntry->List.prev = pList;
557 pList->next = &pReorderEntry->List;
558
559 return true;
560 }
561
562 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
563 {
564 u8 i = 0 , j=0;
565 u16 ethertype;
566 // if(index > 1)
567 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index);
568 for(j = 0; j<index; j++)
569 {
570 //added by amy for reorder
571 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
572 for(i = 0; i<prxb->nr_subframes; i++) {
573 struct sk_buff *sub_skb = prxb->subframes[i];
574
575 /* convert hdr + possible LLC headers into Ethernet header */
576 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
577 if (sub_skb->len >= 8 &&
578 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
579 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
580 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
581 /* remove RFC1042 or Bridge-Tunnel encapsulation and
582 * replace EtherType */
583 skb_pull(sub_skb, SNAP_SIZE);
584 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
585 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
586 } else {
587 u16 len;
588 /* Leave Ethernet header part of hdr and full payload */
589 len = htons(sub_skb->len);
590 memcpy(skb_push(sub_skb, 2), &len, 2);
591 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
592 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
593 }
594 //stats->rx_packets++;
595 //stats->rx_bytes += sub_skb->len;
596
597 /* Indicat the packets to upper layer */
598 if (sub_skb) {
599 //printk("0skb_len(%d)\n", skb->len);
600 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
601 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
602 sub_skb->dev = ieee->dev;
603 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
604 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
605 ieee->last_rx_ps_time = jiffies;
606 //printk("1skb_len(%d)\n", skb->len);
607 netif_rx(sub_skb);
608 }
609 }
610 kfree(prxb);
611 prxb = NULL;
612 }
613 }
614
615
616 void RxReorderIndicatePacket( struct ieee80211_device *ieee,
617 struct ieee80211_rxb* prxb,
618 PRX_TS_RECORD pTS,
619 u16 SeqNum)
620 {
621 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
622 PRX_REORDER_ENTRY pReorderEntry = NULL;
623 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
624 u8 WinSize = pHTInfo->RxReorderWinSize;
625 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
626 u8 index = 0;
627 bool bMatchWinStart = false, bPktInBuf = false;
628 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
629 #if 0
630 if(!list_empty(&ieee->RxReorder_Unused_List))
631 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): ieee->RxReorder_Unused_List is nut NULL\n");
632 #endif
633 /* Rx Reorder initialize condition.*/
634 if(pTS->RxIndicateSeq == 0xffff) {
635 pTS->RxIndicateSeq = SeqNum;
636 }
637
638 /* Drop out the packet which SeqNum is smaller than WinStart */
639 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
640 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
641 pTS->RxIndicateSeq, SeqNum);
642 pHTInfo->RxReorderDropCounter++;
643 {
644 int i;
645 for(i =0; i < prxb->nr_subframes; i++) {
646 dev_kfree_skb(prxb->subframes[i]);
647 }
648 kfree(prxb);
649 prxb = NULL;
650 }
651 return;
652 }
653
654 /*
655 * Sliding window manipulation. Conditions includes:
656 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
657 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
658 */
659 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
660 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
661 bMatchWinStart = true;
662 } else if(SN_LESS(WinEnd, SeqNum)) {
663 if(SeqNum >= (WinSize - 1)) {
664 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
665 } else {
666 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
667 }
668 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
669 }
670
671 /*
672 * Indication process.
673 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
674 * with the SeqNum smaller than latest WinStart and buffer other packets.
675 */
676 /* For Rx Reorder condition:
677 * 1. All packets with SeqNum smaller than WinStart => Indicate
678 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
679 */
680 if(bMatchWinStart) {
681 /* Current packet is going to be indicated.*/
682 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
683 pTS->RxIndicateSeq, SeqNum);
684 prxbIndicateArray[0] = prxb;
685 // printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum);
686 index = 1;
687 } else {
688 /* Current packet is going to be inserted into pending list.*/
689 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__);
690 if(!list_empty(&ieee->RxReorder_Unused_List)) {
691 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
692 list_del_init(&pReorderEntry->List);
693
694 /* Make a reorder entry and insert into a the packet list.*/
695 pReorderEntry->SeqNum = SeqNum;
696 pReorderEntry->prxb = prxb;
697 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
698
699 #if 1
700 if(!AddReorderEntry(pTS, pReorderEntry)) {
701 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
702 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
703 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
704 {
705 int i;
706 for(i =0; i < prxb->nr_subframes; i++) {
707 dev_kfree_skb(prxb->subframes[i]);
708 }
709 kfree(prxb);
710 prxb = NULL;
711 }
712 } else {
713 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
714 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
715 }
716 #endif
717 }
718 else {
719 /*
720 * Packets are dropped if there is not enough reorder entries.
721 * This part shall be modified!! We can just indicate all the
722 * packets in buffer and get reorder entries.
723 */
724 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
725 {
726 int i;
727 for(i =0; i < prxb->nr_subframes; i++) {
728 dev_kfree_skb(prxb->subframes[i]);
729 }
730 kfree(prxb);
731 prxb = NULL;
732 }
733 }
734 }
735
736 /* Check if there is any packet need indicate.*/
737 while(!list_empty(&pTS->RxPendingPktList)) {
738 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
739 #if 1
740 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
741 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
742 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
743 {
744 /* This protect buffer from overflow. */
745 if(index >= REORDER_WIN_SIZE) {
746 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
747 bPktInBuf = true;
748 break;
749 }
750
751 list_del_init(&pReorderEntry->List);
752
753 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
754 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
755
756 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
757 prxbIndicateArray[index] = pReorderEntry->prxb;
758 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
759 index++;
760
761 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
762 } else {
763 bPktInBuf = true;
764 break;
765 }
766 #endif
767 }
768
769 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
770 if(index>0) {
771 // Cancel previous pending timer.
772 if(timer_pending(&pTS->RxPktPendingTimer))
773 {
774 del_timer_sync(&pTS->RxPktPendingTimer);
775 }
776 // del_timer_sync(&pTS->RxPktPendingTimer);
777 pTS->RxTimeoutIndicateSeq = 0xffff;
778
779 // Indicate packets
780 if(index>REORDER_WIN_SIZE){
781 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
782 return;
783 }
784 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
785 bPktInBuf = false;
786 }
787
788 #if 1
789 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
790 // Set new pending timer.
791 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
792 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
793 #if 0
794 if(timer_pending(&pTS->RxPktPendingTimer))
795 del_timer_sync(&pTS->RxPktPendingTimer);
796 pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime);
797 add_timer(&pTS->RxPktPendingTimer);
798 #else
799 mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime));
800 #endif
801 }
802 #endif
803 }
804
805 u8 parse_subframe(struct sk_buff *skb,
806 struct ieee80211_rx_stats *rx_stats,
807 struct ieee80211_rxb *rxb,u8* src,u8* dst)
808 {
809 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
810 u16 fc = le16_to_cpu(hdr->frame_ctl);
811
812 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
813 u16 ChkLength;
814 bool bIsAggregateFrame = false;
815 u16 nSubframe_Length;
816 u8 nPadding_Length = 0;
817 u16 SeqNum=0;
818
819 struct sk_buff *sub_skb;
820 u8 *data_ptr;
821 /* just for debug purpose */
822 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
823
824 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
825 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
826 bIsAggregateFrame = true;
827 }
828
829 if(IEEE80211_QOS_HAS_SEQ(fc)) {
830 LLCOffset += 2;
831 }
832
833 if(rx_stats->bContainHTC) {
834 LLCOffset += sHTCLng;
835 }
836 //printk("ChkLength = %d\n", LLCOffset);
837 // Null packet, don't indicate it to upper layer
838 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
839
840 if( skb->len <= ChkLength ) {
841 return 0;
842 }
843
844 skb_pull(skb, LLCOffset);
845
846 if(!bIsAggregateFrame) {
847 rxb->nr_subframes = 1;
848 #ifdef JOHN_NOCPY
849 rxb->subframes[0] = skb;
850 #else
851 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
852 #endif
853
854 memcpy(rxb->src,src,ETH_ALEN);
855 memcpy(rxb->dst,dst,ETH_ALEN);
856 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
857 return 1;
858 } else {
859 rxb->nr_subframes = 0;
860 memcpy(rxb->src,src,ETH_ALEN);
861 memcpy(rxb->dst,dst,ETH_ALEN);
862 while(skb->len > ETHERNET_HEADER_SIZE) {
863 /* Offset 12 denote 2 mac address */
864 nSubframe_Length = *((u16*)(skb->data + 12));
865 //==m==>change the length order
866 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
867
868 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
869 #if 0//cosa
870 RT_ASSERT(
871 (nRemain_Length>=(ETHERNET_HEADER_SIZE + nSubframe_Length)),
872 ("ParseSubframe(): A-MSDU subframe parse error!! Subframe Length: %d\n", nSubframe_Length) );
873 #endif
874 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
875 __FUNCTION__,rxb->nr_subframes);
876 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
877 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
878 printk("The Packet SeqNum is %d\n",SeqNum);
879 return 0;
880 }
881
882 /* move the data point to data content */
883 skb_pull(skb, ETHERNET_HEADER_SIZE);
884
885 #ifdef JOHN_NOCPY
886 sub_skb = skb_clone(skb, GFP_ATOMIC);
887 sub_skb->len = nSubframe_Length;
888 sub_skb->tail = sub_skb->data + nSubframe_Length;
889 #else
890 /* Allocate new skb for releasing to upper layer */
891 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
892 skb_reserve(sub_skb, 12);
893 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
894 memcpy(data_ptr,skb->data,nSubframe_Length);
895 #endif
896 rxb->subframes[rxb->nr_subframes++] = sub_skb;
897 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
898 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
899 break;
900 }
901 skb_pull(skb,nSubframe_Length);
902
903 if(skb->len != 0) {
904 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
905 if(nPadding_Length == 4) {
906 nPadding_Length = 0;
907 }
908
909 if(skb->len < nPadding_Length) {
910 return 0;
911 }
912
913 skb_pull(skb,nPadding_Length);
914 }
915 }
916 #ifdef JOHN_NOCPY
917 dev_kfree_skb(skb);
918 #endif
919 //{just for debug added by david
920 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
921 //}
922 return rxb->nr_subframes;
923 }
924 }
925
926 /* All received frames are sent to this function. @skb contains the frame in
927 * IEEE 802.11 format, i.e., in the format it was sent over air.
928 * This function is called only as a tasklet (software IRQ). */
929 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
930 struct ieee80211_rx_stats *rx_stats)
931 {
932 struct net_device *dev = ieee->dev;
933 struct ieee80211_hdr_4addr *hdr;
934 //struct ieee80211_hdr_3addrqos *hdr;
935
936 size_t hdrlen;
937 u16 fc, type, stype, sc;
938 struct net_device_stats *stats;
939 unsigned int frag;
940 u8 *payload;
941 u16 ethertype;
942 //added by amy for reorder
943 u8 TID = 0;
944 u16 SeqNum = 0;
945 PRX_TS_RECORD pTS = NULL;
946 //bool bIsAggregateFrame = false;
947 //added by amy for reorder
948 #ifdef NOT_YET
949 struct net_device *wds = NULL;
950 struct sk_buff *skb2 = NULL;
951 struct net_device *wds = NULL;
952 int frame_authorized = 0;
953 int from_assoc_ap = 0;
954 void *sta = NULL;
955 #endif
956 // u16 qos_ctl = 0;
957 u8 dst[ETH_ALEN];
958 u8 src[ETH_ALEN];
959 u8 bssid[ETH_ALEN];
960 struct ieee80211_crypt_data *crypt = NULL;
961 int keyidx = 0;
962
963 int i;
964 struct ieee80211_rxb* rxb = NULL;
965 // cheat the the hdr type
966 hdr = (struct ieee80211_hdr_4addr *)skb->data;
967 stats = &ieee->stats;
968
969 if (skb->len < 10) {
970 printk(KERN_INFO "%s: SKB length < 10\n",
971 dev->name);
972 goto rx_dropped;
973 }
974
975 fc = le16_to_cpu(hdr->frame_ctl);
976 type = WLAN_FC_GET_TYPE(fc);
977 stype = WLAN_FC_GET_STYPE(fc);
978 sc = le16_to_cpu(hdr->seq_ctl);
979
980 frag = WLAN_GET_SEQ_FRAG(sc);
981 hdrlen = ieee80211_get_hdrlen(fc);
982
983 if(HTCCheck(ieee, skb->data))
984 {
985 if(net_ratelimit())
986 printk("find HTCControl\n");
987 hdrlen += 4;
988 rx_stats->bContainHTC = 1;
989 }
990
991 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
992 #ifdef NOT_YET
993 #if WIRELESS_EXT > 15
994 /* Put this code here so that we avoid duplicating it in all
995 * Rx paths. - Jean II */
996 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
997 /* If spy monitoring on */
998 if (iface->spy_data.spy_number > 0) {
999 struct iw_quality wstats;
1000 wstats.level = rx_stats->rssi;
1001 wstats.noise = rx_stats->noise;
1002 wstats.updated = 6; /* No qual value */
1003 /* Update spy records */
1004 wireless_spy_update(dev, hdr->addr2, &wstats);
1005 }
1006 #endif /* IW_WIRELESS_SPY */
1007 #endif /* WIRELESS_EXT > 15 */
1008 hostap_update_rx_stats(local->ap, hdr, rx_stats);
1009 #endif
1010
1011 #if WIRELESS_EXT > 15
1012 if (ieee->iw_mode == IW_MODE_MONITOR) {
1013 ieee80211_monitor_rx(ieee, skb, rx_stats);
1014 stats->rx_packets++;
1015 stats->rx_bytes += skb->len;
1016 return 1;
1017 }
1018 #endif
1019 if (ieee->host_decrypt) {
1020 int idx = 0;
1021 if (skb->len >= hdrlen + 3)
1022 idx = skb->data[hdrlen + 3] >> 6;
1023 crypt = ieee->crypt[idx];
1024 #ifdef NOT_YET
1025 sta = NULL;
1026
1027 /* Use station specific key to override default keys if the
1028 * receiver address is a unicast address ("individual RA"). If
1029 * bcrx_sta_key parameter is set, station specific key is used
1030 * even with broad/multicast targets (this is against IEEE
1031 * 802.11, but makes it easier to use different keys with
1032 * stations that do not support WEP key mapping). */
1033
1034 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
1035 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
1036 &sta);
1037 #endif
1038
1039 /* allow NULL decrypt to indicate an station specific override
1040 * for default encryption */
1041 if (crypt && (crypt->ops == NULL ||
1042 crypt->ops->decrypt_mpdu == NULL))
1043 crypt = NULL;
1044
1045 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1046 /* This seems to be triggered by some (multicast?)
1047 * frames from other than current BSS, so just drop the
1048 * frames silently instead of filling system log with
1049 * these reports. */
1050 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1051 " (SA=" MAC_FMT ")\n",
1052 MAC_ARG(hdr->addr2));
1053 ieee->ieee_stats.rx_discards_undecryptable++;
1054 goto rx_dropped;
1055 }
1056 }
1057
1058 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1059 goto rx_dropped;
1060
1061 // if QoS enabled, should check the sequence for each of the AC
1062 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
1063 if (is_duplicate_packet(ieee, hdr))
1064 goto rx_dropped;
1065
1066 }
1067 else
1068 {
1069 PRX_TS_RECORD pRxTS = NULL;
1070 #if 0
1071 struct ieee80211_hdr_3addr *hdr;
1072 u16 fc;
1073 hdr = (struct ieee80211_hdr_3addr *)skb->data;
1074 fc = le16_to_cpu(hdr->frame_ctl);
1075 u8 tmp = (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS);
1076
1077 u8 tid = (*((u8*)skb->data + (((fc& IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))?30:24)))&0xf;
1078 printk("====================>fc:%x, tid:%d, tmp:%d\n", fc, tid, tmp);
1079 //u8 tid = (u8)((frameqos*)(buf + ((fc & IEEE80211_FCTL_TODS)&&(fc & IEEE80211_FCTL_FROMDS))? 30 : 24))->field.tid;
1080 #endif
1081 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid);
1082 #if 1
1083 if(GetTs(
1084 ieee,
1085 (PTS_COMMON_INFO*) &pRxTS,
1086 hdr->addr2,
1087 (u8)Frame_QoSTID((u8*)(skb->data)),
1088 RX_DIR,
1089 true))
1090 {
1091
1092 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc));
1093 if( (fc & (1<<11)) &&
1094 (frag == pRxTS->RxLastFragNum) &&
1095 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
1096 {
1097 goto rx_dropped;
1098 }
1099 else
1100 {
1101 pRxTS->RxLastFragNum = frag;
1102 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1103 }
1104 }
1105 else
1106 {
1107 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
1108 goto rx_dropped;
1109 }
1110 }
1111 #endif
1112 if (type == IEEE80211_FTYPE_MGMT) {
1113
1114 #if 0
1115 if ( stype == IEEE80211_STYPE_AUTH &&
1116 fc & IEEE80211_FCTL_WEP && ieee->host_decrypt &&
1117 (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1118 {
1119 printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
1120 "from " MAC_FMT "\n", dev->name,
1121 MAC_ARG(hdr->addr2));
1122 /* TODO: could inform hostapd about this so that it
1123 * could send auth failure report */
1124 goto rx_dropped;
1125 }
1126 #endif
1127
1128 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1129 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1130 goto rx_dropped;
1131 else
1132 goto rx_exit;
1133 }
1134
1135 /* Data frame - extract src/dst addresses */
1136 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1137 case IEEE80211_FCTL_FROMDS:
1138 memcpy(dst, hdr->addr1, ETH_ALEN);
1139 memcpy(src, hdr->addr3, ETH_ALEN);
1140 memcpy(bssid, hdr->addr2, ETH_ALEN);
1141 break;
1142 case IEEE80211_FCTL_TODS:
1143 memcpy(dst, hdr->addr3, ETH_ALEN);
1144 memcpy(src, hdr->addr2, ETH_ALEN);
1145 memcpy(bssid, hdr->addr1, ETH_ALEN);
1146 break;
1147 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1148 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1149 goto rx_dropped;
1150 memcpy(dst, hdr->addr3, ETH_ALEN);
1151 memcpy(src, hdr->addr4, ETH_ALEN);
1152 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1153 break;
1154 case 0:
1155 memcpy(dst, hdr->addr1, ETH_ALEN);
1156 memcpy(src, hdr->addr2, ETH_ALEN);
1157 memcpy(bssid, hdr->addr3, ETH_ALEN);
1158 break;
1159 }
1160
1161 #ifdef NOT_YET
1162 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1163 goto rx_dropped;
1164 if (wds) {
1165 skb->dev = dev = wds;
1166 stats = hostap_get_stats(dev);
1167 }
1168
1169 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1170 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1171 ieee->stadev &&
1172 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1173 /* Frame from BSSID of the AP for which we are a client */
1174 skb->dev = dev = ieee->stadev;
1175 stats = hostap_get_stats(dev);
1176 from_assoc_ap = 1;
1177 }
1178 #endif
1179
1180 dev->last_rx = jiffies;
1181
1182 #ifdef NOT_YET
1183 if ((ieee->iw_mode == IW_MODE_MASTER ||
1184 ieee->iw_mode == IW_MODE_REPEAT) &&
1185 !from_assoc_ap) {
1186 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1187 wds != NULL)) {
1188 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1189 frame_authorized = 0;
1190 break;
1191 case AP_RX_CONTINUE:
1192 frame_authorized = 1;
1193 break;
1194 case AP_RX_DROP:
1195 goto rx_dropped;
1196 case AP_RX_EXIT:
1197 goto rx_exit;
1198 }
1199 }
1200 #endif
1201 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1202 /* Nullfunc frames may have PS-bit set, so they must be passed to
1203 * hostap_handle_sta_rx() before being dropped here. */
1204 if (stype != IEEE80211_STYPE_DATA &&
1205 stype != IEEE80211_STYPE_DATA_CFACK &&
1206 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1207 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1208 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1209 ) {
1210 if (stype != IEEE80211_STYPE_NULLFUNC)
1211 IEEE80211_DEBUG_DROP(
1212 "RX: dropped data frame "
1213 "with no data (type=0x%02x, "
1214 "subtype=0x%02x, len=%d)\n",
1215 type, stype, skb->len);
1216 goto rx_dropped;
1217 }
1218 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1219 goto rx_dropped;
1220
1221 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1222
1223 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1224 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1225 {
1226 printk("decrypt frame error\n");
1227 goto rx_dropped;
1228 }
1229
1230
1231 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1232
1233 /* skb: hdr + (possibly fragmented) plaintext payload */
1234 // PR: FIXME: hostap has additional conditions in the "if" below:
1235 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1236 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1237 int flen;
1238 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1239 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1240
1241 if (!frag_skb) {
1242 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1243 "Rx cannot get skb from fragment "
1244 "cache (morefrag=%d seq=%u frag=%u)\n",
1245 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1246 WLAN_GET_SEQ_SEQ(sc), frag);
1247 goto rx_dropped;
1248 }
1249 flen = skb->len;
1250 if (frag != 0)
1251 flen -= hdrlen;
1252
1253 if (frag_skb->tail + flen > frag_skb->end) {
1254 printk(KERN_WARNING "%s: host decrypted and "
1255 "reassembled frame did not fit skb\n",
1256 dev->name);
1257 ieee80211_frag_cache_invalidate(ieee, hdr);
1258 goto rx_dropped;
1259 }
1260
1261 if (frag == 0) {
1262 /* copy first fragment (including full headers) into
1263 * beginning of the fragment cache skb */
1264 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1265 } else {
1266 /* append frame payload to the end of the fragment
1267 * cache skb */
1268 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1269 flen);
1270 }
1271 dev_kfree_skb_any(skb);
1272 skb = NULL;
1273
1274 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1275 /* more fragments expected - leave the skb in fragment
1276 * cache for now; it will be delivered to upper layers
1277 * after all fragments have been received */
1278 goto rx_exit;
1279 }
1280
1281 /* this was the last fragment and the frame will be
1282 * delivered, so remove skb from fragment cache */
1283 skb = frag_skb;
1284 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1285 ieee80211_frag_cache_invalidate(ieee, hdr);
1286 }
1287
1288 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1289 * encrypted/authenticated */
1290 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1291 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1292 {
1293 printk("==>decrypt msdu error\n");
1294 goto rx_dropped;
1295 }
1296
1297 //added by amy for AP roaming
1298 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1299 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1300
1301 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1302 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1303 if (/*ieee->ieee802_1x &&*/
1304 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1305
1306 #ifdef CONFIG_IEEE80211_DEBUG
1307 /* pass unencrypted EAPOL frames even if encryption is
1308 * configured */
1309 struct eapol *eap = (struct eapol *)(skb->data +
1310 24);
1311 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1312 eap_get_type(eap->type));
1313 #endif
1314 } else {
1315 IEEE80211_DEBUG_DROP(
1316 "encryption configured, but RX "
1317 "frame not encrypted (SA=" MAC_FMT ")\n",
1318 MAC_ARG(hdr->addr2));
1319 goto rx_dropped;
1320 }
1321 }
1322
1323 #ifdef CONFIG_IEEE80211_DEBUG
1324 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1325 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1326 struct eapol *eap = (struct eapol *)(skb->data +
1327 24);
1328 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1329 eap_get_type(eap->type));
1330 }
1331 #endif
1332
1333 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1334 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1335 IEEE80211_DEBUG_DROP(
1336 "dropped unencrypted RX data "
1337 "frame from " MAC_FMT
1338 " (drop_unencrypted=1)\n",
1339 MAC_ARG(hdr->addr2));
1340 goto rx_dropped;
1341 }
1342 /*
1343 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1344 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1345 }
1346 */
1347 //added by amy for reorder
1348 #if 1
1349 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1350 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1351 {
1352 TID = Frame_QoSTID(skb->data);
1353 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1354 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1355 if(TID !=0 && TID !=3)
1356 {
1357 ieee->bis_any_nonbepkts = true;
1358 }
1359 }
1360 #endif
1361 //added by amy for reorder
1362 /* skb: hdr + (possible reassembled) full plaintext payload */
1363 payload = skb->data + hdrlen;
1364 //ethertype = (payload[6] << 8) | payload[7];
1365 rxb = (struct ieee80211_rxb*)kmalloc(sizeof(struct ieee80211_rxb),GFP_ATOMIC);
1366 if(rxb == NULL)
1367 {
1368 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1369 goto rx_dropped;
1370 }
1371 /* to parse amsdu packets */
1372 /* qos data packets & reserved bit is 1 */
1373 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) {
1374 /* only to free rxb, and not submit the packets to upper layer */
1375 for(i =0; i < rxb->nr_subframes; i++) {
1376 dev_kfree_skb(rxb->subframes[i]);
1377 }
1378 kfree(rxb);
1379 rxb = NULL;
1380 goto rx_dropped;
1381 }
1382
1383 ieee->last_rx_ps_time = jiffies;
1384 //added by amy for reorder
1385 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1386 //added by amy for reorder
1387 for(i = 0; i<rxb->nr_subframes; i++) {
1388 struct sk_buff *sub_skb = rxb->subframes[i];
1389
1390 if (sub_skb) {
1391 /* convert hdr + possible LLC headers into Ethernet header */
1392 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1393 if (sub_skb->len >= 8 &&
1394 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1395 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1396 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1397 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1398 * replace EtherType */
1399 skb_pull(sub_skb, SNAP_SIZE);
1400 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1401 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1402 } else {
1403 u16 len;
1404 /* Leave Ethernet header part of hdr and full payload */
1405 len = htons(sub_skb->len);
1406 memcpy(skb_push(sub_skb, 2), &len, 2);
1407 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1408 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1409 }
1410
1411 stats->rx_packets++;
1412 stats->rx_bytes += sub_skb->len;
1413 if(is_multicast_ether_addr(dst)) {
1414 stats->multicast++;
1415 }
1416
1417 /* Indicat the packets to upper layer */
1418 //printk("0skb_len(%d)\n", skb->len);
1419 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1420 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1421 sub_skb->dev = dev;
1422 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1423 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1424 //printk("1skb_len(%d)\n", skb->len);
1425 netif_rx(sub_skb);
1426 }
1427 }
1428 kfree(rxb);
1429 rxb = NULL;
1430
1431 }
1432 else
1433 {
1434 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1435 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1436 }
1437 #ifndef JOHN_NOCPY
1438 dev_kfree_skb(skb);
1439 #endif
1440
1441 rx_exit:
1442 #ifdef NOT_YET
1443 if (sta)
1444 hostap_handle_sta_release(sta);
1445 #endif
1446 return 1;
1447
1448 rx_dropped:
1449 if (rxb != NULL)
1450 {
1451 kfree(rxb);
1452 rxb = NULL;
1453 }
1454 stats->rx_dropped++;
1455
1456 /* Returning 0 indicates to caller that we have not handled the SKB--
1457 * so it is still allocated and can be used again by underlying
1458 * hardware as a DMA target */
1459 return 0;
1460 }
1461
1462 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1463
1464 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1465
1466 /*
1467 * Make ther structure we read from the beacon packet has
1468 * the right values
1469 */
1470 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1471 *info_element, int sub_type)
1472 {
1473
1474 if (info_element->qui_subtype != sub_type)
1475 return -1;
1476 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1477 return -1;
1478 if (info_element->qui_type != QOS_OUI_TYPE)
1479 return -1;
1480 if (info_element->version != QOS_VERSION_1)
1481 return -1;
1482
1483 return 0;
1484 }
1485
1486
1487 /*
1488 * Parse a QoS parameter element
1489 */
1490 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1491 *element_param, struct ieee80211_info_element
1492 *info_element)
1493 {
1494 int ret = 0;
1495 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1496
1497 if ((info_element == NULL) || (element_param == NULL))
1498 return -1;
1499
1500 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1501 memcpy(element_param->info_element.qui, info_element->data,
1502 info_element->len);
1503 element_param->info_element.elementID = info_element->id;
1504 element_param->info_element.length = info_element->len;
1505 } else
1506 ret = -1;
1507 if (ret == 0)
1508 ret = ieee80211_verify_qos_info(&element_param->info_element,
1509 QOS_OUI_PARAM_SUB_TYPE);
1510 return ret;
1511 }
1512
1513 /*
1514 * Parse a QoS information element
1515 */
1516 static int ieee80211_read_qos_info_element(struct
1517 ieee80211_qos_information_element
1518 *element_info, struct ieee80211_info_element
1519 *info_element)
1520 {
1521 int ret = 0;
1522 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1523
1524 if (element_info == NULL)
1525 return -1;
1526 if (info_element == NULL)
1527 return -1;
1528
1529 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1530 memcpy(element_info->qui, info_element->data,
1531 info_element->len);
1532 element_info->elementID = info_element->id;
1533 element_info->length = info_element->len;
1534 } else
1535 ret = -1;
1536
1537 if (ret == 0)
1538 ret = ieee80211_verify_qos_info(element_info,
1539 QOS_OUI_INFO_SUB_TYPE);
1540 return ret;
1541 }
1542
1543
1544 /*
1545 * Write QoS parameters from the ac parameters.
1546 */
1547 static int ieee80211_qos_convert_ac_to_parameters(struct
1548 ieee80211_qos_parameter_info
1549 *param_elm, struct
1550 ieee80211_qos_parameters
1551 *qos_param)
1552 {
1553 int rc = 0;
1554 int i;
1555 struct ieee80211_qos_ac_parameter *ac_params;
1556 u8 aci;
1557 //u8 cw_min;
1558 //u8 cw_max;
1559
1560 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1561 ac_params = &(param_elm->ac_params_record[i]);
1562
1563 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1564
1565 if(aci >= QOS_QUEUE_NUM)
1566 continue;
1567 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1568
1569 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1570 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1571
1572 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1573
1574 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1575
1576 qos_param->flag[aci] =
1577 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1578 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1579 }
1580 return rc;
1581 }
1582
1583 /*
1584 * we have a generic data element which it may contain QoS information or
1585 * parameters element. check the information element length to decide
1586 * which type to read
1587 */
1588 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1589 *info_element,
1590 struct ieee80211_network *network)
1591 {
1592 int rc = 0;
1593 struct ieee80211_qos_parameters *qos_param = NULL;
1594 struct ieee80211_qos_information_element qos_info_element;
1595
1596 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1597
1598 if (rc == 0) {
1599 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1600 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1601 } else {
1602 struct ieee80211_qos_parameter_info param_element;
1603
1604 rc = ieee80211_read_qos_param_element(¶m_element,
1605 info_element);
1606 if (rc == 0) {
1607 qos_param = &(network->qos_data.parameters);
1608 ieee80211_qos_convert_ac_to_parameters(¶m_element,
1609 qos_param);
1610 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1611 network->qos_data.param_count =
1612 param_element.info_element.ac_info & 0x0F;
1613 }
1614 }
1615
1616 if (rc == 0) {
1617 IEEE80211_DEBUG_QOS("QoS is supported\n");
1618 network->qos_data.supported = 1;
1619 }
1620 return rc;
1621 }
1622
1623 #ifdef CONFIG_IEEE80211_DEBUG
1624 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1625
1626 static const char *get_info_element_string(u16 id)
1627 {
1628 switch (id) {
1629 MFIE_STRING(SSID);
1630 MFIE_STRING(RATES);
1631 MFIE_STRING(FH_SET);
1632 MFIE_STRING(DS_SET);
1633 MFIE_STRING(CF_SET);
1634 MFIE_STRING(TIM);
1635 MFIE_STRING(IBSS_SET);
1636 MFIE_STRING(COUNTRY);
1637 MFIE_STRING(HOP_PARAMS);
1638 MFIE_STRING(HOP_TABLE);
1639 MFIE_STRING(REQUEST);
1640 MFIE_STRING(CHALLENGE);
1641 MFIE_STRING(POWER_CONSTRAINT);
1642 MFIE_STRING(POWER_CAPABILITY);
1643 MFIE_STRING(TPC_REQUEST);
1644 MFIE_STRING(TPC_REPORT);
1645 MFIE_STRING(SUPP_CHANNELS);
1646 MFIE_STRING(CSA);
1647 MFIE_STRING(MEASURE_REQUEST);
1648 MFIE_STRING(MEASURE_REPORT);
1649 MFIE_STRING(QUIET);
1650 MFIE_STRING(IBSS_DFS);
1651 // MFIE_STRING(ERP_INFO);
1652 MFIE_STRING(RSN);
1653 MFIE_STRING(RATES_EX);
1654 MFIE_STRING(GENERIC);
1655 MFIE_STRING(QOS_PARAMETER);
1656 default:
1657 return "UNKNOWN";
1658 }
1659 }
1660 #endif
1661
1662 #ifdef ENABLE_DOT11D
1663 static inline void ieee80211_extract_country_ie(
1664 struct ieee80211_device *ieee,
1665 struct ieee80211_info_element *info_element,
1666 struct ieee80211_network *network,
1667 u8 * addr2
1668 )
1669 {
1670 if(IS_DOT11D_ENABLE(ieee))
1671 {
1672 if(info_element->len!= 0)
1673 {
1674 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1675 network->CountryIeLen = info_element->len;
1676
1677 if(!IS_COUNTRY_IE_VALID(ieee))
1678 {
1679 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1680 }
1681 }
1682
1683 //
1684 // 070305, rcnjko: I update country IE watch dog here because
1685 // some AP (e.g. Cisco 1242) don't include country IE in their
1686 // probe response frame.
1687 //
1688 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1689 {
1690 UPDATE_CIE_WATCHDOG(ieee);
1691 }
1692 }
1693
1694 }
1695 #endif
1696
1697 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1698 struct ieee80211_info_element *info_element,
1699 u16 length,
1700 struct ieee80211_network *network,
1701 struct ieee80211_rx_stats *stats)
1702 {
1703 u8 i;
1704 short offset;
1705 u16 tmp_htcap_len=0;
1706 u16 tmp_htinfo_len=0;
1707 u16 ht_realtek_agg_len=0;
1708 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1709 // u16 broadcom_len = 0;
1710 #ifdef CONFIG_IEEE80211_DEBUG
1711 char rates_str[64];
1712 char *p;
1713 #endif
1714
1715 while (length >= sizeof(*info_element)) {
1716 if (sizeof(*info_element) + info_element->len > length) {
1717 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1718 "info_element->len + 2 > left : "
1719 "info_element->len+2=%zd left=%d, id=%d.\n",
1720 info_element->len +
1721 sizeof(*info_element),
1722 length, info_element->id);
1723 /* We stop processing but don't return an error here
1724 * because some misbehaviour APs break this rule. ie.
1725 * Orinoco AP1000. */
1726 break;
1727 }
1728
1729 switch (info_element->id) {
1730 case MFIE_TYPE_SSID:
1731 if (ieee80211_is_empty_essid(info_element->data,
1732 info_element->len)) {
1733 network->flags |= NETWORK_EMPTY_ESSID;
1734 break;
1735 }
1736
1737 network->ssid_len = min(info_element->len,
1738 (u8) IW_ESSID_MAX_SIZE);
1739 memcpy(network->ssid, info_element->data, network->ssid_len);
1740 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1741 memset(network->ssid + network->ssid_len, 0,
1742 IW_ESSID_MAX_SIZE - network->ssid_len);
1743
1744 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1745 network->ssid, network->ssid_len);
1746 break;
1747
1748 case MFIE_TYPE_RATES:
1749 #ifdef CONFIG_IEEE80211_DEBUG
1750 p = rates_str;
1751 #endif
1752 network->rates_len = min(info_element->len,
1753 MAX_RATES_LENGTH);
1754 for (i = 0; i < network->rates_len; i++) {
1755 network->rates[i] = info_element->data[i];
1756 #ifdef CONFIG_IEEE80211_DEBUG
1757 p += snprintf(p, sizeof(rates_str) -
1758 (p - rates_str), "%02X ",
1759 network->rates[i]);
1760 #endif
1761 if (ieee80211_is_ofdm_rate
1762 (info_element->data[i])) {
1763 network->flags |= NETWORK_HAS_OFDM;
1764 if (info_element->data[i] &
1765 IEEE80211_BASIC_RATE_MASK)
1766 network->flags &=
1767 ~NETWORK_HAS_CCK;
1768 }
1769 }
1770
1771 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1772 rates_str, network->rates_len);
1773 break;
1774
1775 case MFIE_TYPE_RATES_EX:
1776 #ifdef CONFIG_IEEE80211_DEBUG
1777 p = rates_str;
1778 #endif
1779 network->rates_ex_len = min(info_element->len,
1780 MAX_RATES_EX_LENGTH);
1781 for (i = 0; i < network->rates_ex_len; i++) {
1782 network->rates_ex[i] = info_element->data[i];
1783 #ifdef CONFIG_IEEE80211_DEBUG
1784 p += snprintf(p, sizeof(rates_str) -
1785 (p - rates_str), "%02X ",
1786 network->rates[i]);
1787 #endif
1788 if (ieee80211_is_ofdm_rate
1789 (info_element->data[i])) {
1790 network->flags |= NETWORK_HAS_OFDM;
1791 if (info_element->data[i] &
1792 IEEE80211_BASIC_RATE_MASK)
1793 network->flags &=
1794 ~NETWORK_HAS_CCK;
1795 }
1796 }
1797
1798 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1799 rates_str, network->rates_ex_len);
1800 break;
1801
1802 case MFIE_TYPE_DS_SET:
1803 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1804 info_element->data[0]);
1805 network->channel = info_element->data[0];
1806 break;
1807
1808 case MFIE_TYPE_FH_SET:
1809 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1810 break;
1811
1812 case MFIE_TYPE_CF_SET:
1813 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1814 break;
1815
1816 case MFIE_TYPE_TIM:
1817 if(info_element->len < 4)
1818 break;
1819
1820 network->tim.tim_count = info_element->data[0];
1821 network->tim.tim_period = info_element->data[1];
1822
1823 network->dtim_period = info_element->data[1];
1824 if(ieee->state != IEEE80211_LINKED)
1825 break;
1826 #if 0
1827 network->last_dtim_sta_time[0] = stats->mac_time[0];
1828 #else
1829 //we use jiffies for legacy Power save
1830 network->last_dtim_sta_time[0] = jiffies;
1831 #endif
1832 network->last_dtim_sta_time[1] = stats->mac_time[1];
1833
1834 network->dtim_data = IEEE80211_DTIM_VALID;
1835
1836 if(info_element->data[0] != 0)
1837 break;
1838
1839 if(info_element->data[2] & 1)
1840 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1841
1842 offset = (info_element->data[2] >> 1)*2;
1843
1844 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id);
1845
1846 if(ieee->assoc_id < 8*offset ||
1847 ieee->assoc_id > 8*(offset + info_element->len -3))
1848
1849 break;
1850
1851 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1852
1853 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1854 network->dtim_data |= IEEE80211_DTIM_UCAST;
1855
1856 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1857 break;
1858
1859 case MFIE_TYPE_ERP:
1860 network->erp_value = info_element->data[0];
1861 network->flags |= NETWORK_HAS_ERP_VALUE;
1862 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1863 network->erp_value);
1864 break;
1865 case MFIE_TYPE_IBSS_SET:
1866 network->atim_window = info_element->data[0];
1867 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1868 network->atim_window);
1869 break;
1870
1871 case MFIE_TYPE_CHALLENGE:
1872 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1873 break;
1874
1875 case MFIE_TYPE_GENERIC:
1876 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1877 info_element->len);
1878 if (!ieee80211_parse_qos_info_param_IE(info_element,
1879 network))
1880 break;
1881
1882 if (info_element->len >= 4 &&
1883 info_element->data[0] == 0x00 &&
1884 info_element->data[1] == 0x50 &&
1885 info_element->data[2] == 0xf2 &&
1886 info_element->data[3] == 0x01) {
1887 network->wpa_ie_len = min(info_element->len + 2,
1888 MAX_WPA_IE_LEN);
1889 memcpy(network->wpa_ie, info_element,
1890 network->wpa_ie_len);
1891 break;
1892 }
1893
1894 #ifdef THOMAS_TURBO
1895 if (info_element->len == 7 &&
1896 info_element->data[0] == 0x00 &&
1897 info_element->data[1] == 0xe0 &&
1898 info_element->data[2] == 0x4c &&
1899 info_element->data[3] == 0x01 &&
1900 info_element->data[4] == 0x02) {
1901 network->Turbo_Enable = 1;
1902 }
1903 #endif
1904
1905 //for HTcap and HTinfo parameters
1906 if(tmp_htcap_len == 0){
1907 if(info_element->len >= 4 &&
1908 info_element->data[0] == 0x00 &&
1909 info_element->data[1] == 0x90 &&
1910 info_element->data[2] == 0x4c &&
1911 info_element->data[3] == 0x033){
1912
1913 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1914 if(tmp_htcap_len != 0){
1915 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1916 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1917 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1918 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1919 }
1920 }
1921 if(tmp_htcap_len != 0){
1922 network->bssht.bdSupportHT = true;
1923 network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1924 }else{
1925 network->bssht.bdSupportHT = false;
1926 network->bssht.bdHT1R = false;
1927 }
1928 }
1929
1930
1931 if(tmp_htinfo_len == 0){
1932 if(info_element->len >= 4 &&
1933 info_element->data[0] == 0x00 &&
1934 info_element->data[1] == 0x90 &&
1935 info_element->data[2] == 0x4c &&
1936 info_element->data[3] == 0x034){
1937
1938 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1939 if(tmp_htinfo_len != 0){
1940 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1941 if(tmp_htinfo_len){
1942 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1943 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1944 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1945 }
1946
1947 }
1948
1949 }
1950 }
1951
1952 if(ieee->aggregation){
1953 if(network->bssht.bdSupportHT){
1954 if(info_element->len >= 4 &&
1955 info_element->data[0] == 0x00 &&
1956 info_element->data[1] == 0xe0 &&
1957 info_element->data[2] == 0x4c &&
1958 info_element->data[3] == 0x02){
1959
1960 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1961 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1962
1963 }
1964 if(ht_realtek_agg_len >= 5){
1965 network->realtek_cap_exit = true;
1966 network->bssht.bdRT2RTAggregation = true;
1967
1968 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1969 network->bssht.bdRT2RTLongSlotTime = true;
1970
1971 if((ht_realtek_agg_buf[4]==1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE))
1972 {
1973 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE;
1974 //bssDesc->Vender = HT_IOT_PEER_REALTEK_92SE;
1975 }
1976 }
1977 }
1978
1979 }
1980
1981 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1982 {
1983 if((info_element->len >= 3 &&
1984 info_element->data[0] == 0x00 &&
1985 info_element->data[1] == 0x05 &&
1986 info_element->data[2] == 0xb5) ||
1987 (info_element->len >= 3 &&
1988 info_element->data[0] == 0x00 &&
1989 info_element->data[1] == 0x0a &&
1990 info_element->data[2] == 0xf7) ||
1991 (info_element->len >= 3 &&
1992 info_element->data[0] == 0x00 &&
1993 info_element->data[1] == 0x10 &&
1994 info_element->data[2] == 0x18)){
1995
1996 network->broadcom_cap_exist = true;
1997
1998 }
1999 }
2000 #if 0
2001 if (tmp_htcap_len !=0)
2002 {
2003 u16 cap_ext = ((PHT_CAPABILITY_ELE)&info_element->data[0])->ExtHTCapInfo;
2004 if ((cap_ext & 0x0c00) == 0x0c00)
2005 {
2006 network->ralink_cap_exist = true;
2007 }
2008 }
2009 #endif
2010 if(info_element->len >= 3 &&
2011 info_element->data[0] == 0x00 &&
2012 info_element->data[1] == 0x0c &&
2013 info_element->data[2] == 0x43)
2014 {
2015 network->ralink_cap_exist = true;
2016 }
2017 else
2018 network->ralink_cap_exist = false;
2019 //added by amy for atheros AP
2020 if((info_element->len >= 3 &&
2021 info_element->data[0] == 0x00 &&
2022 info_element->data[1] == 0x03 &&
2023 info_element->data[2] == 0x7f) ||
2024 (info_element->len >= 3 &&
2025 info_element->data[0] == 0x00 &&
2026 info_element->data[1] == 0x13 &&
2027 info_element->data[2] == 0x74))
2028 {
2029 // printk("========>%s(): athros AP is exist\n",__FUNCTION__);
2030 network->atheros_cap_exist = true;
2031 }
2032 else
2033 network->atheros_cap_exist = false;
2034
2035 if ((info_element->len >= 3 &&
2036 info_element->data[0] == 0x00 &&
2037 info_element->data[1] == 0x50 &&
2038 info_element->data[2] == 0x43) )
2039 {
2040 network->marvell_cap_exist = true;
2041 }
2042 else
2043 network->marvell_cap_exist = false;
2044
2045 if(info_element->len >= 3 &&
2046 info_element->data[0] == 0x00 &&
2047 info_element->data[1] == 0x40 &&
2048 info_element->data[2] == 0x96)
2049 {
2050 network->cisco_cap_exist = true;
2051 }
2052 else
2053 network->cisco_cap_exist = false;
2054 //added by amy for LEAP of cisco
2055 if(info_element->len > 4 &&
2056 info_element->data[0] == 0x00 &&
2057 info_element->data[1] == 0x40 &&
2058 info_element->data[2] == 0x96 &&
2059 info_element->data[3] == 0x01)
2060 {
2061 if(info_element->len == 6)
2062 {
2063 memcpy(network->CcxRmState, &info_element[4], 2);
2064 if(network->CcxRmState[0] != 0)
2065 {
2066 network->bCcxRmEnable = true;
2067 }
2068 else
2069 network->bCcxRmEnable = false;
2070 //
2071 // CCXv4 Table 59-1 MBSSID Masks.
2072 //
2073 network->MBssidMask = network->CcxRmState[1] & 0x07;
2074 if(network->MBssidMask != 0)
2075 {
2076 network->bMBssidValid = true;
2077 network->MBssidMask = 0xff << (network->MBssidMask);
2078 cpMacAddr(network->MBssid, network->bssid);
2079 network->MBssid[5] &= network->MBssidMask;
2080 }
2081 else
2082 {
2083 network->bMBssidValid = false;
2084 }
2085 }
2086 else
2087 {
2088 network->bCcxRmEnable = false;
2089 }
2090 }
2091 if(info_element->len > 4 &&
2092 info_element->data[0] == 0x00 &&
2093 info_element->data[1] == 0x40 &&
2094 info_element->data[2] == 0x96 &&
2095 info_element->data[3] == 0x03)
2096 {
2097 if(info_element->len == 5)
2098 {
2099 network->bWithCcxVerNum = true;
2100 network->BssCcxVerNumber = info_element->data[4];
2101 }
2102 else
2103 {
2104 network->bWithCcxVerNum = false;
2105 network->BssCcxVerNumber = 0;
2106 }
2107 }
2108 break;
2109
2110 case MFIE_TYPE_RSN:
2111 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2112 info_element->len);
2113 network->rsn_ie_len = min(info_element->len + 2,
2114 MAX_WPA_IE_LEN);
2115 memcpy(network->rsn_ie, info_element,
2116 network->rsn_ie_len);
2117 break;
2118
2119 //HT related element.
2120 case MFIE_TYPE_HT_CAP:
2121 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2122 info_element->len);
2123 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2124 if(tmp_htcap_len != 0){
2125 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2126 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2127 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2128 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2129
2130 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2131 // windows driver will update WMM parameters each beacon received once connected
2132 // Linux driver is a bit different.
2133 network->bssht.bdSupportHT = true;
2134 network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
2135 }
2136 else{
2137 network->bssht.bdSupportHT = false;
2138 network->bssht.bdHT1R = false;
2139 }
2140 break;
2141
2142
2143 case MFIE_TYPE_HT_INFO:
2144 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2145 info_element->len);
2146 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2147 if(tmp_htinfo_len){
2148 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2149 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2150 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2151 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2152 }
2153 break;
2154
2155 case MFIE_TYPE_AIRONET:
2156 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2157 info_element->len);
2158 if(info_element->len >IE_CISCO_FLAG_POSITION)
2159 {
2160 network->bWithAironetIE = true;
2161
2162 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2163 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2164 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2165 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2166 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2167 {
2168 network->bCkipSupported = true;
2169 }
2170 else
2171 {
2172 network->bCkipSupported = false;
2173 }
2174 }
2175 else
2176 {
2177 network->bWithAironetIE = false;
2178 network->bCkipSupported = false;
2179 }
2180 break;
2181 case MFIE_TYPE_QOS_PARAMETER:
2182 printk(KERN_ERR
2183 "QoS Error need to parse QOS_PARAMETER IE\n");
2184 break;
2185
2186 #ifdef ENABLE_DOT11D
2187 case MFIE_TYPE_COUNTRY:
2188 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2189 info_element->len);
2190 //printk("=====>Receive <%s> Country IE\n",network->ssid);
2191 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2192 break;
2193 #endif
2194 /* TODO */
2195 #if 0
2196 /* 802.11h */
2197 case MFIE_TYPE_POWER_CONSTRAINT:
2198 network->power_constraint = info_element->data[0];
2199 network->flags |= NETWORK_HAS_POWER_CONSTRAINT;
2200 break;
2201
2202 case MFIE_TYPE_CSA:
2203 network->power_constraint = info_element->data[0];
2204 network->flags |= NETWORK_HAS_CSA;
2205 break;
2206
2207 case MFIE_TYPE_QUIET:
2208 network->quiet.count = info_element->data[0];
2209 network->quiet.period = info_element->data[1];
2210 network->quiet.duration = info_element->data[2];
2211 network->quiet.offset = info_element->data[3];
2212 network->flags |= NETWORK_HAS_QUIET;
2213 break;
2214
2215 case MFIE_TYPE_IBSS_DFS:
2216 if (network->ibss_dfs)
2217 break;
2218 network->ibss_dfs = kmemdup(info_element->data,
2219 info_element->len,
2220 GFP_ATOMIC);
2221 if (!network->ibss_dfs)
2222 return 1;
2223 network->flags |= NETWORK_HAS_IBSS_DFS;
2224 break;
2225
2226 case MFIE_TYPE_TPC_REPORT:
2227 network->tpc_report.transmit_power =
2228 info_element->data[0];
2229 network->tpc_report.link_margin = info_element->data[1];
2230 network->flags |= NETWORK_HAS_TPC_REPORT;
2231 break;
2232 #endif
2233 default:
2234 IEEE80211_DEBUG_MGMT
2235 ("Unsupported info element: %s (%d)\n",
2236 get_info_element_string(info_element->id),
2237 info_element->id);
2238 break;
2239 }
2240
2241 length -= sizeof(*info_element) + info_element->len;
2242 info_element =
2243 (struct ieee80211_info_element *)&info_element->
2244 data[info_element->len];
2245 }
2246
2247 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2248 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2249 {
2250 network->unknown_cap_exist = true;
2251 }
2252 else
2253 {
2254 network->unknown_cap_exist = false;
2255 }
2256 return 0;
2257 }
2258
2259 static inline u8 ieee80211_SignalStrengthTranslate(
2260 u8 CurrSS
2261 )
2262 {
2263 u8 RetSS;
2264
2265 // Step 1. Scale mapping.
2266 if(CurrSS >= 71 && CurrSS <= 100)
2267 {
2268 RetSS = 90 + ((CurrSS - 70) / 3);
2269 }
2270 else if(CurrSS >= 41 && CurrSS <= 70)
2271 {
2272 RetSS = 78 + ((CurrSS - 40) / 3);
2273 }
2274 else if(CurrSS >= 31 && CurrSS <= 40)
2275 {
2276 RetSS = 66 + (CurrSS - 30);
2277 }
2278 else if(CurrSS >= 21 && CurrSS <= 30)
2279 {
2280 RetSS = 54 + (CurrSS - 20);
2281 }
2282 else if(CurrSS >= 5 && CurrSS <= 20)
2283 {
2284 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2285 }
2286 else if(CurrSS == 4)
2287 {
2288 RetSS = 36;
2289 }
2290 else if(CurrSS == 3)
2291 {
2292 RetSS = 27;
2293 }
2294 else if(CurrSS == 2)
2295 {
2296 RetSS = 18;
2297 }
2298 else if(CurrSS == 1)
2299 {
2300 RetSS = 9;
2301 }
2302 else
2303 {
2304 RetSS = CurrSS;
2305 }
2306 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2307
2308 // Step 2. Smoothing.
2309
2310 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2311
2312 return RetSS;
2313 }
2314
2315 long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index.
2316 {
2317 long signal_power; // in dBm.
2318
2319 // Translate to dBm (x=0.5y-95).
2320 signal_power = (long)((signal_strength_index + 1) >> 1);
2321 signal_power -= 95;
2322
2323 return signal_power;
2324 }
2325
2326 static inline int ieee80211_network_init(
2327 struct ieee80211_device *ieee,
2328 struct ieee80211_probe_response *beacon,
2329 struct ieee80211_network *network,
2330 struct ieee80211_rx_stats *stats)
2331 {
2332 #ifdef CONFIG_IEEE80211_DEBUG
2333 //char rates_str[64];
2334 //char *p;
2335 #endif
2336
2337 network->qos_data.active = 0;
2338 network->qos_data.supported = 0;
2339 network->qos_data.param_count = 0;
2340 network->qos_data.old_param_count = 0;
2341
2342 /* Pull out fixed field data */
2343 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2344 network->capability = le16_to_cpu(beacon->capability);
2345 network->last_scanned = jiffies;
2346 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2347 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2348 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2349 /* Where to pull this? beacon->listen_interval;*/
2350 network->listen_interval = 0x0A;
2351 network->rates_len = network->rates_ex_len = 0;
2352 network->last_associate = 0;
2353 network->ssid_len = 0;
2354 network->flags = 0;
2355 network->atim_window = 0;
2356 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2357 0x3 : 0x0;
2358 network->berp_info_valid = false;
2359 network->broadcom_cap_exist = false;
2360 network->ralink_cap_exist = false;
2361 network->atheros_cap_exist = false;
2362 network->cisco_cap_exist = false;
2363 network->unknown_cap_exist = false;
2364 network->realtek_cap_exit = false;
2365 network->marvell_cap_exist = false;
2366 #ifdef THOMAS_TURBO
2367 network->Turbo_Enable = 0;
2368 #endif
2369 #ifdef ENABLE_DOT11D
2370 network->CountryIeLen = 0;
2371 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2372 #endif
2373 //Initialize HT parameters
2374 //ieee80211_ht_initialize(&network->bssht);
2375 HTInitializeBssDesc(&network->bssht);
2376 if (stats->freq == IEEE80211_52GHZ_BAND) {
2377 /* for A band (No DS info) */
2378 network->channel = stats->received_channel;
2379 } else
2380 network->flags |= NETWORK_HAS_CCK;
2381
2382 network->wpa_ie_len = 0;
2383 network->rsn_ie_len = 0;
2384
2385 if (ieee80211_parse_info_param
2386 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2387 return 1;
2388
2389 network->mode = 0;
2390 if (stats->freq == IEEE80211_52GHZ_BAND)
2391 network->mode = IEEE_A;
2392 else {
2393 if (network->flags & NETWORK_HAS_OFDM)
2394 network->mode |= IEEE_G;
2395 if (network->flags & NETWORK_HAS_CCK)
2396 network->mode |= IEEE_B;
2397 }
2398
2399 if (network->mode == 0) {
2400 IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
2401 "network.\n",
2402 escape_essid(network->ssid,
2403 network->ssid_len),
2404 MAC_ARG(network->bssid));
2405 return 1;
2406 }
2407
2408 if(network->bssht.bdSupportHT){
2409 if(network->mode == IEEE_A)
2410 network->mode = IEEE_N_5G;
2411 else if(network->mode & (IEEE_G | IEEE_B))
2412 network->mode = IEEE_N_24G;
2413 }
2414 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2415 network->flags |= NETWORK_EMPTY_ESSID;
2416
2417 #if 1
2418 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2419 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2420 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2421 #endif
2422
2423 memcpy(&network->stats, stats, sizeof(network->stats));
2424
2425 return 0;
2426 }
2427
2428 static inline int is_same_network(struct ieee80211_network *src,
2429 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2430 {
2431 /* A network is only a duplicate if the channel, BSSID, ESSID
2432 * and the capability field (in particular IBSS and BSS) all match.
2433 * We treat all <hidden> with the same BSSID and channel
2434 * as one network */
2435 return //((src->ssid_len == dst->ssid_len) &&
2436 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2437 (src->channel == dst->channel) &&
2438 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2439 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2440 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2441 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2442 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2443 ((src->capability & WLAN_CAPABILITY_BSS) ==
2444 (dst->capability & WLAN_CAPABILITY_BSS)));
2445 }
2446
2447 static inline void update_network(struct ieee80211_network *dst,
2448 struct ieee80211_network *src)
2449 {
2450 int qos_active;
2451 u8 old_param;
2452
2453 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2454 dst->capability = src->capability;
2455 memcpy(dst->rates, src->rates, src->rates_len);
2456 dst->rates_len = src->rates_len;
2457 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2458 dst->rates_ex_len = src->rates_ex_len;
2459 if(src->ssid_len > 0)
2460 {
2461 memset(dst->ssid, 0, dst->ssid_len);
2462 dst->ssid_len = src->ssid_len;
2463 memcpy(dst->ssid, src->ssid, src->ssid_len);
2464 }
2465 dst->mode = src->mode;
2466 dst->flags = src->flags;
2467 dst->time_stamp[0] = src->time_stamp[0];
2468 dst->time_stamp[1] = src->time_stamp[1];
2469 if (src->flags & NETWORK_HAS_ERP_VALUE)
2470 {
2471 dst->erp_value = src->erp_value;
2472 dst->berp_info_valid = src->berp_info_valid = true;
2473 }
2474 dst->beacon_interval = src->beacon_interval;
2475 dst->listen_interval = src->listen_interval;
2476 dst->atim_window = src->atim_window;
2477 dst->dtim_period = src->dtim_period;
2478 dst->dtim_data = src->dtim_data;
2479 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2480 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2481 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2482
2483 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2484 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2485 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2486 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2487 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2488 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2489 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2490 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2491 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2492 dst->ralink_cap_exist = src->ralink_cap_exist;
2493 dst->atheros_cap_exist = src->atheros_cap_exist;
2494 dst->realtek_cap_exit = src->realtek_cap_exit;
2495 dst->marvell_cap_exist = src->marvell_cap_exist;
2496 dst->cisco_cap_exist = src->cisco_cap_exist;
2497 dst->unknown_cap_exist = src->unknown_cap_exist;
2498 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2499 dst->wpa_ie_len = src->wpa_ie_len;
2500 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2501 dst->rsn_ie_len = src->rsn_ie_len;
2502
2503 dst->last_scanned = jiffies;
2504 /* qos related parameters */
2505 //qos_active = src->qos_data.active;
2506 qos_active = dst->qos_data.active;
2507 //old_param = dst->qos_data.old_param_count;
2508 old_param = dst->qos_data.param_count;
2509 if(dst->flags & NETWORK_HAS_QOS_MASK){
2510 //not update QOS paramter in beacon, as most AP will set all these parameter to 0.//WB
2511 // printk("====>%s(), aifs:%x, %x\n", __FUNCTION__, dst->qos_data.parameters.aifs[0], src->qos_data.parameters.aifs[0]);
2512 // memcpy(&dst->qos_data, &src->qos_data,
2513 // sizeof(struct ieee80211_qos_data));
2514 }
2515 else {
2516 dst->qos_data.supported = src->qos_data.supported;
2517 dst->qos_data.param_count = src->qos_data.param_count;
2518 }
2519
2520 if(dst->qos_data.supported == 1) {
2521 dst->QoS_Enable = 1;
2522 if(dst->ssid_len)
2523 IEEE80211_DEBUG_QOS
2524 ("QoS the network %s is QoS supported\n",
2525 dst->ssid);
2526 else
2527 IEEE80211_DEBUG_QOS
2528 ("QoS the network is QoS supported\n");
2529 }
2530 dst->qos_data.active = qos_active;
2531 dst->qos_data.old_param_count = old_param;
2532
2533 /* dst->last_associate is not overwritten */
2534 #if 1
2535 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2536 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2537 src->wmm_param[1].ac_aci_acm_aifsn|| \
2538 src->wmm_param[2].ac_aci_acm_aifsn|| \
2539 src->wmm_param[1].ac_aci_acm_aifsn) {
2540 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2541 }
2542 //dst->QoS_Enable = src->QoS_Enable;
2543 #else
2544 dst->QoS_Enable = 1;//for Rtl8187 simulation
2545 #endif
2546 #ifdef THOMAS_TURBO
2547 dst->Turbo_Enable = src->Turbo_Enable;
2548 #endif
2549
2550 #ifdef ENABLE_DOT11D
2551 dst->CountryIeLen = src->CountryIeLen;
2552 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2553 #endif
2554
2555 //added by amy for LEAP
2556 dst->bWithAironetIE = src->bWithAironetIE;
2557 dst->bCkipSupported = src->bCkipSupported;
2558 memcpy(dst->CcxRmState,src->CcxRmState,2);
2559 dst->bCcxRmEnable = src->bCcxRmEnable;
2560 dst->MBssidMask = src->MBssidMask;
2561 dst->bMBssidValid = src->bMBssidValid;
2562 memcpy(dst->MBssid,src->MBssid,6);
2563 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2564 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2565
2566 }
2567
2568 static inline int is_beacon(__le16 fc)
2569 {
2570 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2571 }
2572
2573 static inline void ieee80211_process_probe_response(
2574 struct ieee80211_device *ieee,
2575 struct ieee80211_probe_response *beacon,
2576 struct ieee80211_rx_stats *stats)
2577 {
2578 struct ieee80211_network network;
2579 struct ieee80211_network *target;
2580 struct ieee80211_network *oldest = NULL;
2581 #ifdef CONFIG_IEEE80211_DEBUG
2582 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2583 #endif
2584 unsigned long flags;
2585 short renew;
2586 //u8 wmm_info;
2587
2588 memset(&network, 0, sizeof(struct ieee80211_network));
2589 IEEE80211_DEBUG_SCAN(
2590 "'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2591 escape_essid(info_element->data, info_element->len),
2592 MAC_ARG(beacon->header.addr3),
2593 (beacon->capability & (1<<0xf)) ? '1' : '',
2594 (beacon->capability & (1<<0xe)) ? '1' : '',
2595 (beacon->capability & (1<<0xd)) ? '1' : '',
2596 (beacon->capability & (1<<0xc)) ? '1' : '',
2597 (beacon->capability & (1<<0xb)) ? '1' : '',
2598 (beacon->capability & (1<<0xa)) ? '1' : '',
2599 (beacon->capability & (1<<0x9)) ? '1' : '',
2600 (beacon->capability & (1<<0x8)) ? '1' : '',
2601 (beacon->capability & (1<<0x7)) ? '1' : '',
2602 (beacon->capability & (1<<0x6)) ? '1' : '',
2603 (beacon->capability & (1<<0x5)) ? '1' : '',
2604 (beacon->capability & (1<<0x4)) ? '1' : '',
2605 (beacon->capability & (1<<0x3)) ? '1' : '',
2606 (beacon->capability & (1<<0x2)) ? '1' : '',
2607 (beacon->capability & (1<<0x1)) ? '1' : '',
2608 (beacon->capability & (1<<0x0)) ? '1' : '');
2609
2610 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2611 IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
2612 escape_essid(info_element->data,
2613 info_element->len),
2614 MAC_ARG(beacon->header.addr3),
2615 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2616 IEEE80211_STYPE_PROBE_RESP ?
2617 "PROBE RESPONSE" : "BEACON");
2618 return;
2619 }
2620
2621 #ifdef ENABLE_DOT11D
2622 // For Asus EeePc request,
2623 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2624 // wireless adapter should follow the country code.
2625 // (2) If there is no any country code in beacon,
2626 // then wireless adapter should do active scan from ch1~11 and
2627 // passive scan from ch12~14
2628
2629 if( !IsLegalChannel(ieee, network.channel) )
2630 return;
2631 if(ieee->bGlobalDomain)
2632 {
2633 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2634 {
2635 // Case 1: Country code
2636 if(IS_COUNTRY_IE_VALID(ieee) )
2637 {
2638 if( !IsLegalChannel(ieee, network.channel) )
2639 {
2640 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2641 return;
2642 }
2643 }
2644 // Case 2: No any country code.
2645 else
2646 {
2647 // Filter over channel ch12~14
2648 if(network.channel > 11)
2649 {
2650 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2651 return;
2652 }
2653 }
2654 }
2655 else
2656 {
2657 // Case 1: Country code
2658 if(IS_COUNTRY_IE_VALID(ieee) )
2659 {
2660 if( !IsLegalChannel(ieee, network.channel) )
2661 {
2662 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2663 return;
2664 }
2665 }
2666 // Case 2: No any country code.
2667 else
2668 {
2669 // Filter over channel ch12~14
2670 if(network.channel > 14)
2671 {
2672 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2673 return;
2674 }
2675 }
2676 }
2677 }
2678 #endif
2679
2680 /* The network parsed correctly -- so now we scan our known networks
2681 * to see if we can find it in our list.
2682 *
2683 * NOTE: This search is definitely not optimized. Once its doing
2684 * the "right thing" we'll optimize it for efficiency if
2685 * necessary */
2686
2687 /* Search for this entry in the list and update it if it is
2688 * already there. */
2689
2690 spin_lock_irqsave(&ieee->lock, flags);
2691
2692 if(is_same_network(&ieee->current_network, &network, ieee)) {
2693 update_network(&ieee->current_network, &network);
2694 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2695 && ieee->current_network.berp_info_valid){
2696 if(ieee->current_network.erp_value& ERP_UseProtection)
2697 ieee->current_network.buseprotection = true;
2698 else
2699 ieee->current_network.buseprotection = false;
2700 }
2701 if(is_beacon(beacon->header.frame_ctl))
2702 {
2703 if(ieee->state == IEEE80211_LINKED)
2704 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2705 }
2706 else //hidden AP
2707 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2708 }
2709
2710 list_for_each_entry(target, &ieee->network_list, list) {
2711 if (is_same_network(target, &network, ieee))
2712 break;
2713 if ((oldest == NULL) ||
2714 (target->last_scanned < oldest->last_scanned))
2715 oldest = target;
2716 }
2717
2718 /* If we didn't find a match, then get a new network slot to initialize
2719 * with this beacon's information */
2720 if (&target->list == &ieee->network_list) {
2721 if (list_empty(&ieee->network_free_list)) {
2722 /* If there are no more slots, expire the oldest */
2723 list_del(&oldest->list);
2724 target = oldest;
2725 IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
2726 "network list.\n",
2727 escape_essid(target->ssid,
2728 target->ssid_len),
2729 MAC_ARG(target->bssid));
2730 } else {
2731 /* Otherwise just pull from the free list */
2732 target = list_entry(ieee->network_free_list.next,
2733 struct ieee80211_network, list);
2734 list_del(ieee->network_free_list.next);
2735 }
2736
2737
2738 #ifdef CONFIG_IEEE80211_DEBUG
2739 IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
2740 escape_essid(network.ssid,
2741 network.ssid_len),
2742 MAC_ARG(network.bssid),
2743 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2744 IEEE80211_STYPE_PROBE_RESP ?
2745 "PROBE RESPONSE" : "BEACON");
2746 #endif
2747 memcpy(target, &network, sizeof(*target));
2748 list_add_tail(&target->list, &ieee->network_list);
2749 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2750 ieee80211_softmac_new_net(ieee,&network);
2751 } else {
2752 IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
2753 escape_essid(target->ssid,
2754 target->ssid_len),
2755 MAC_ARG(target->bssid),
2756 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2757 IEEE80211_STYPE_PROBE_RESP ?
2758 "PROBE RESPONSE" : "BEACON");
2759
2760 /* we have an entry and we are going to update it. But this entry may
2761 * be already expired. In this case we do the same as we found a new
2762 * net and call the new_net handler
2763 */
2764 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2765 //YJ,add,080819,for hidden ap
2766 if(is_beacon(beacon->header.frame_ctl) == 0)
2767 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2768 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2769 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2770 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2771 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2772 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2773 renew = 1;
2774 //YJ,add,080819,for hidden ap,end
2775
2776 update_network(target, &network);
2777 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2778 ieee80211_softmac_new_net(ieee,&network);
2779 }
2780
2781 spin_unlock_irqrestore(&ieee->lock, flags);
2782 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2783 (ieee->state == IEEE80211_LINKED)) {
2784 if(ieee->handle_beacon != NULL) {
2785 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2786 }
2787 }
2788 }
2789
2790 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2791 struct ieee80211_hdr_4addr *header,
2792 struct ieee80211_rx_stats *stats)
2793 {
2794 if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
2795 ieee->iw_mode == IW_MODE_INFRA &&
2796 ieee->state == IEEE80211_LINKED))
2797 {
2798 tasklet_schedule(&ieee->ps_task);
2799 }
2800
2801 if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP &&
2802 WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON)
2803 ieee->last_rx_ps_time = jiffies;
2804
2805 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2806
2807 case IEEE80211_STYPE_BEACON:
2808 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2809 WLAN_FC_GET_STYPE(header->frame_ctl));
2810 IEEE80211_DEBUG_SCAN("Beacon\n");
2811 ieee80211_process_probe_response(
2812 ieee, (struct ieee80211_probe_response *)header, stats);
2813 break;
2814
2815 case IEEE80211_STYPE_PROBE_RESP:
2816 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2817 WLAN_FC_GET_STYPE(header->frame_ctl));
2818 IEEE80211_DEBUG_SCAN("Probe response\n");
2819 ieee80211_process_probe_response(
2820 ieee, (struct ieee80211_probe_response *)header, stats);
2821 break;
2822
2823 }
2824 }
2825
2826 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
2827 EXPORT_SYMBOL(ieee80211_rx_mgt);
2828 EXPORT_SYMBOL(ieee80211_rx);
2829 #else
2830 EXPORT_SYMBOL_NOVERS(ieee80211_rx_mgt);
2831 EXPORT_SYMBOL_NOVERS(ieee80211_rx);
2832 #endif
2833
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