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24#include <linux/compiler.h>
25#include <linux/errno.h>
26#include <linux/if_arp.h>
27#include <linux/in6.h>
28#include <linux/in.h>
29#include <linux/ip.h>
30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/netdevice.h>
33#include <linux/pci.h>
34#include <linux/proc_fs.h>
35#include <linux/skbuff.h>
36#include <linux/slab.h>
37#include <linux/tcp.h>
38#include <linux/types.h>
39#include <linux/wireless.h>
40#include <linux/etherdevice.h>
41#include <linux/uaccess.h>
42#include <linux/ctype.h>
43
44#include "ieee80211.h"
45#include "dot11d.h"
46static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
47 struct sk_buff *skb,
48 struct ieee80211_rx_stats *rx_stats)
49{
50 struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data;
51 u16 fc = le16_to_cpu(hdr->frame_ctl);
52
53 skb->dev = ieee->dev;
54 skb_reset_mac_header(skb);
55
56 skb_pull(skb, ieee80211_get_hdrlen(fc));
57 skb->pkt_type = PACKET_OTHERHOST;
58 skb->protocol = htons(ETH_P_80211_RAW);
59 memset(skb->cb, 0, sizeof(skb->cb));
60 netif_rx(skb);
61}
62
63
64
65static struct ieee80211_frag_entry *
66ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
67 unsigned int frag, u8 tid, u8 *src, u8 *dst)
68{
69 struct ieee80211_frag_entry *entry;
70 int i;
71
72 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
73 entry = &ieee->frag_cache[tid][i];
74 if (entry->skb != NULL &&
75 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
76 IEEE80211_DEBUG_FRAG(
77 "expiring fragment cache entry "
78 "seq=%u last_frag=%u\n",
79 entry->seq, entry->last_frag);
80 dev_kfree_skb_any(entry->skb);
81 entry->skb = NULL;
82 }
83
84 if (entry->skb != NULL && entry->seq == seq &&
85 (entry->last_frag + 1 == frag || frag == -1) &&
86 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
87 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
88 return entry;
89 }
90
91 return NULL;
92}
93
94
95static struct sk_buff *
96ieee80211_frag_cache_get(struct ieee80211_device *ieee,
97 struct rtl_80211_hdr_4addr *hdr)
98{
99 struct sk_buff *skb = NULL;
100 u16 fc = le16_to_cpu(hdr->frame_ctl);
101 u16 sc = le16_to_cpu(hdr->seq_ctl);
102 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
103 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
104 struct ieee80211_frag_entry *entry;
105 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
106 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
107 u8 tid;
108
109 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
110 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
111 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
112 tid = UP2AC(tid);
113 tid ++;
114 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
115 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
116 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
117 tid = UP2AC(tid);
118 tid ++;
119 } else {
120 tid = 0;
121 }
122
123 if (frag == 0) {
124
125 skb = dev_alloc_skb(ieee->dev->mtu +
126 sizeof(struct rtl_80211_hdr_4addr) +
127 8 +
128 2 +
129 8 +
130 ETH_ALEN +
131 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) );
132 if (skb == NULL)
133 return NULL;
134
135 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
136 ieee->frag_next_idx[tid]++;
137 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
138 ieee->frag_next_idx[tid] = 0;
139
140 if (entry->skb != NULL)
141 dev_kfree_skb_any(entry->skb);
142
143 entry->first_frag_time = jiffies;
144 entry->seq = seq;
145 entry->last_frag = frag;
146 entry->skb = skb;
147 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
148 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
149 } else {
150
151
152 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
153 hdr->addr1);
154 if (entry != NULL) {
155 entry->last_frag = frag;
156 skb = entry->skb;
157 }
158 }
159
160 return skb;
161}
162
163
164
165static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
166 struct rtl_80211_hdr_4addr *hdr)
167{
168 u16 fc = le16_to_cpu(hdr->frame_ctl);
169 u16 sc = le16_to_cpu(hdr->seq_ctl);
170 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
171 struct ieee80211_frag_entry *entry;
172 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
173 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
174 u8 tid;
175
176 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
177 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
178 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
179 tid = UP2AC(tid);
180 tid ++;
181 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
182 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
183 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
184 tid = UP2AC(tid);
185 tid ++;
186 } else {
187 tid = 0;
188 }
189
190 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
191 hdr->addr1);
192
193 if (entry == NULL) {
194 IEEE80211_DEBUG_FRAG(
195 "could not invalidate fragment cache "
196 "entry (seq=%u)\n", seq);
197 return -1;
198 }
199
200 entry->skb = NULL;
201 return 0;
202}
203
204
205
206
207
208
209
210
211static inline int
212ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
213 struct ieee80211_rx_stats *rx_stats, u16 type,
214 u16 stype)
215{
216
217
218
219
220 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
221
222 rx_stats->len = skb->len;
223 ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats);
224
225 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))
226 {
227 dev_kfree_skb_any(skb);
228 return 0;
229 }
230
231 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
232
233 dev_kfree_skb_any(skb);
234
235 return 0;
236
237 #ifdef NOT_YET
238 if (ieee->iw_mode == IW_MODE_MASTER) {
239 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
240 ieee->dev->name);
241 return 0;
242
243
244
245 }
246
247 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
248 if (stype == WLAN_FC_STYPE_BEACON &&
249 ieee->iw_mode == IW_MODE_MASTER) {
250 struct sk_buff *skb2;
251
252
253 skb2 = skb_clone(skb, GFP_ATOMIC);
254 if (skb2)
255 hostap_rx(skb2->dev, skb2, rx_stats);
256 }
257
258
259
260 ieee->apdevstats.rx_packets++;
261 ieee->apdevstats.rx_bytes += skb->len;
262 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
263 return 0;
264 }
265
266 if (ieee->iw_mode == IW_MODE_MASTER) {
267 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
268 printk(KERN_DEBUG "%s: unknown management frame "
269 "(type=0x%02x, stype=0x%02x) dropped\n",
270 skb->dev->name, type, stype);
271 return -1;
272 }
273
274 hostap_rx(skb->dev, skb, rx_stats);
275 return 0;
276 }
277
278 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
279 "received in non-Host AP mode\n", skb->dev->name);
280 return -1;
281 #endif
282}
283
284
285
286
287
288static unsigned char rfc1042_header[] =
289{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
290
291static unsigned char bridge_tunnel_header[] =
292{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
293
294
295
296static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
297 struct sk_buff *skb, size_t hdrlen)
298{
299 struct net_device *dev = ieee->dev;
300 u16 fc, ethertype;
301 struct rtl_80211_hdr_4addr *hdr;
302 u8 *pos;
303
304 if (skb->len < 24)
305 return 0;
306
307 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
308 fc = le16_to_cpu(hdr->frame_ctl);
309
310
311 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
312 IEEE80211_FCTL_TODS &&
313 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
314 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
315
316 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
317 IEEE80211_FCTL_FROMDS &&
318 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
319
320 } else
321 return 0;
322
323 if (skb->len < 24 + 8)
324 return 0;
325
326
327
328 pos = skb->data + hdrlen;
329 ethertype = (pos[6] << 8) | pos[7];
330 if (ethertype == ETH_P_PAE)
331 return 1;
332
333 return 0;
334}
335
336
337static inline int
338ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
339 struct ieee80211_crypt_data *crypt)
340{
341 struct rtl_80211_hdr_4addr *hdr;
342 int res, hdrlen;
343
344 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
345 return 0;
346 if (ieee->hwsec_active)
347 {
348 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
349 tcb_desc->bHwSec = 1;
350 }
351 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
352 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
353
354 if (ieee->tkip_countermeasures &&
355 strcmp(crypt->ops->name, "TKIP") == 0) {
356 if (net_ratelimit()) {
357 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
358 "received packet from %pM\n",
359 ieee->dev->name, hdr->addr2);
360 }
361 return -1;
362 }
363
364 atomic_inc(&crypt->refcnt);
365 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
366 atomic_dec(&crypt->refcnt);
367 if (res < 0) {
368 IEEE80211_DEBUG_DROP(
369 "decryption failed (SA=%pM"
370 ") res=%d\n", hdr->addr2, res);
371 if (res == -2)
372 IEEE80211_DEBUG_DROP("Decryption failed ICV "
373 "mismatch (key %d)\n",
374 skb->data[hdrlen + 3] >> 6);
375 ieee->ieee_stats.rx_discards_undecryptable++;
376 return -1;
377 }
378
379 return res;
380}
381
382
383
384static inline int
385ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb,
386 int keyidx, struct ieee80211_crypt_data *crypt)
387{
388 struct rtl_80211_hdr_4addr *hdr;
389 int res, hdrlen;
390
391 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
392 return 0;
393 if (ieee->hwsec_active)
394 {
395 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
396 tcb_desc->bHwSec = 1;
397 }
398
399 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
400 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
401
402 atomic_inc(&crypt->refcnt);
403 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
404 atomic_dec(&crypt->refcnt);
405 if (res < 0) {
406 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
407 " (SA=%pM keyidx=%d)\n",
408 ieee->dev->name, hdr->addr2, keyidx);
409 return -1;
410 }
411
412 return 0;
413}
414
415
416
417#define IEEE_PACKET_RETRY_TIME (5*HZ)
418static int is_duplicate_packet(struct ieee80211_device *ieee,
419 struct rtl_80211_hdr_4addr *header)
420{
421 u16 fc = le16_to_cpu(header->frame_ctl);
422 u16 sc = le16_to_cpu(header->seq_ctl);
423 u16 seq = WLAN_GET_SEQ_SEQ(sc);
424 u16 frag = WLAN_GET_SEQ_FRAG(sc);
425 u16 *last_seq, *last_frag;
426 unsigned long *last_time;
427 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
428 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
429 u8 tid;
430
431
432
433 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
434 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header;
435 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
436 tid = UP2AC(tid);
437 tid ++;
438 } else if(IEEE80211_QOS_HAS_SEQ(fc)) {
439 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header;
440 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
441 tid = UP2AC(tid);
442 tid ++;
443 } else {
444 tid = 0;
445 }
446
447 switch (ieee->iw_mode) {
448 case IW_MODE_ADHOC:
449 {
450 struct list_head *p;
451 struct ieee_ibss_seq *entry = NULL;
452 u8 *mac = header->addr2;
453 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
454
455 list_for_each(p, &ieee->ibss_mac_hash[index]) {
456 entry = list_entry(p, struct ieee_ibss_seq, list);
457 if (!memcmp(entry->mac, mac, ETH_ALEN))
458 break;
459 }
460
461 if (p == &ieee->ibss_mac_hash[index]) {
462 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
463 if (!entry)
464 return 0;
465 memcpy(entry->mac, mac, ETH_ALEN);
466 entry->seq_num[tid] = seq;
467 entry->frag_num[tid] = frag;
468 entry->packet_time[tid] = jiffies;
469 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
470 return 0;
471 }
472 last_seq = &entry->seq_num[tid];
473 last_frag = &entry->frag_num[tid];
474 last_time = &entry->packet_time[tid];
475 break;
476 }
477
478 case IW_MODE_INFRA:
479 last_seq = &ieee->last_rxseq_num[tid];
480 last_frag = &ieee->last_rxfrag_num[tid];
481 last_time = &ieee->last_packet_time[tid];
482
483 break;
484 default:
485 return 0;
486 }
487
488
489
490
491 if ((*last_seq == seq) &&
492 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
493 if (*last_frag == frag)
494 goto drop;
495 if (*last_frag + 1 != frag)
496
497 goto drop;
498 } else
499 *last_seq = seq;
500
501 *last_frag = frag;
502 *last_time = jiffies;
503 return 0;
504
505drop:
506
507
508 return 1;
509}
510
511static bool AddReorderEntry(PRX_TS_RECORD pTS, PRX_REORDER_ENTRY pReorderEntry)
512{
513 struct list_head *pList = &pTS->RxPendingPktList;
514 while(pList->next != &pTS->RxPendingPktList)
515 {
516 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
517 {
518 pList = pList->next;
519 }
520 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
521 {
522 return false;
523 }
524 else
525 {
526 break;
527 }
528 }
529 pReorderEntry->List.next = pList->next;
530 pReorderEntry->List.next->prev = &pReorderEntry->List;
531 pReorderEntry->List.prev = pList;
532 pList->next = &pReorderEntry->List;
533
534 return true;
535}
536
537void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index)
538{
539 u8 i = 0 , j=0;
540 u16 ethertype;
541
542
543 for(j = 0; j<index; j++)
544 {
545
546 struct ieee80211_rxb *prxb = prxbIndicateArray[j];
547 for(i = 0; i<prxb->nr_subframes; i++) {
548 struct sk_buff *sub_skb = prxb->subframes[i];
549
550
551 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
552 if (sub_skb->len >= 8 &&
553 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
554 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
555 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
556
557
558 skb_pull(sub_skb, SNAP_SIZE);
559 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
560 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
561 } else {
562 u16 len;
563
564 len = htons(sub_skb->len);
565 memcpy(skb_push(sub_skb, 2), &len, 2);
566 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
567 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
568 }
569
570
571
572
573 if (sub_skb) {
574 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
575 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
576 sub_skb->dev = ieee->dev;
577 sub_skb->ip_summed = CHECKSUM_NONE;
578
579 ieee->last_rx_ps_time = jiffies;
580 netif_rx(sub_skb);
581 }
582 }
583 kfree(prxb);
584 prxb = NULL;
585 }
586}
587
588
589static void RxReorderIndicatePacket(struct ieee80211_device *ieee,
590 struct ieee80211_rxb *prxb,
591 PRX_TS_RECORD pTS, u16 SeqNum)
592{
593 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
594 PRX_REORDER_ENTRY pReorderEntry = NULL;
595 struct ieee80211_rxb **prxbIndicateArray;
596 u8 WinSize = pHTInfo->RxReorderWinSize;
597 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
598 u8 index = 0;
599 bool bMatchWinStart = false, bPktInBuf = false;
600 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize);
601
602 prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) *
603 REORDER_WIN_SIZE, GFP_KERNEL);
604 if (!prxbIndicateArray)
605 return;
606
607
608 if (pTS->RxIndicateSeq == 0xffff) {
609 pTS->RxIndicateSeq = SeqNum;
610 }
611
612
613 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
614 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
615 pTS->RxIndicateSeq, SeqNum);
616 pHTInfo->RxReorderDropCounter++;
617 {
618 int i;
619 for(i =0; i < prxb->nr_subframes; i++) {
620 dev_kfree_skb(prxb->subframes[i]);
621 }
622 kfree(prxb);
623 prxb = NULL;
624 }
625
626 kfree(prxbIndicateArray);
627 return;
628 }
629
630
631
632
633
634
635 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
636 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
637 bMatchWinStart = true;
638 } else if(SN_LESS(WinEnd, SeqNum)) {
639 if(SeqNum >= (WinSize - 1)) {
640 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
641 } else {
642 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
643 }
644 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
645 }
646
647
648
649
650
651
652
653
654
655
656 if(bMatchWinStart) {
657
658 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
659 pTS->RxIndicateSeq, SeqNum);
660 prxbIndicateArray[0] = prxb;
661
662 index = 1;
663 } else {
664
665
666 if(!list_empty(&ieee->RxReorder_Unused_List)) {
667 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
668 list_del_init(&pReorderEntry->List);
669
670
671 pReorderEntry->SeqNum = SeqNum;
672 pReorderEntry->prxb = prxb;
673
674
675 if(!AddReorderEntry(pTS, pReorderEntry)) {
676 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
677 __func__, pTS->RxIndicateSeq, SeqNum);
678 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
679 {
680 int i;
681 for(i =0; i < prxb->nr_subframes; i++) {
682 dev_kfree_skb(prxb->subframes[i]);
683 }
684 kfree(prxb);
685 prxb = NULL;
686 }
687 } else {
688 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
689 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
690 }
691 }
692 else {
693
694
695
696
697
698 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
699 {
700 int i;
701 for(i =0; i < prxb->nr_subframes; i++) {
702 dev_kfree_skb(prxb->subframes[i]);
703 }
704 kfree(prxb);
705 prxb = NULL;
706 }
707 }
708 }
709
710
711 while(!list_empty(&pTS->RxPendingPktList)) {
712 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
713 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
714 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
715 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
716 {
717
718 if (index >= REORDER_WIN_SIZE) {
719 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
720 bPktInBuf = true;
721 break;
722 }
723
724 list_del_init(&pReorderEntry->List);
725
726 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
727 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
728
729 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
730 prxbIndicateArray[index] = pReorderEntry->prxb;
731
732 index++;
733
734 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
735 } else {
736 bPktInBuf = true;
737 break;
738 }
739 }
740
741
742 if (index>0) {
743
744
745 pTS->RxTimeoutIndicateSeq = 0xffff;
746
747
748 if(index>REORDER_WIN_SIZE){
749 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
750 kfree(prxbIndicateArray);
751 return;
752 }
753 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
754 }
755
756 if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
757
758 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
759 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
760 if(timer_pending(&pTS->RxPktPendingTimer))
761 del_timer_sync(&pTS->RxPktPendingTimer);
762 pTS->RxPktPendingTimer.expires = jiffies +
763 msecs_to_jiffies(pHTInfo->RxReorderPendingTime);
764 add_timer(&pTS->RxPktPendingTimer);
765 }
766
767 kfree(prxbIndicateArray);
768}
769
770static u8 parse_subframe(struct sk_buff *skb,
771 struct ieee80211_rx_stats *rx_stats,
772 struct ieee80211_rxb *rxb, u8 *src, u8 *dst)
773{
774 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
775 u16 fc = le16_to_cpu(hdr->frame_ctl);
776
777 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr);
778 u16 ChkLength;
779 bool bIsAggregateFrame = false;
780 u16 nSubframe_Length;
781 u8 nPadding_Length = 0;
782 u16 SeqNum=0;
783
784 struct sk_buff *sub_skb;
785 u8 *data_ptr;
786
787 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
788
789 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
790 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
791 bIsAggregateFrame = true;
792 }
793
794 if (IEEE80211_QOS_HAS_SEQ(fc)) {
795 LLCOffset += 2;
796 }
797
798 if (rx_stats->bContainHTC) {
799 LLCOffset += sHTCLng;
800 }
801
802 ChkLength = LLCOffset;
803
804 if (skb->len <= ChkLength)
805 return 0;
806
807 skb_pull(skb, LLCOffset);
808
809 if(!bIsAggregateFrame) {
810 rxb->nr_subframes = 1;
811#ifdef JOHN_NOCPY
812 rxb->subframes[0] = skb;
813#else
814 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
815#endif
816
817 memcpy(rxb->src,src,ETH_ALEN);
818 memcpy(rxb->dst,dst,ETH_ALEN);
819
820 return 1;
821 } else {
822 rxb->nr_subframes = 0;
823 memcpy(rxb->src,src,ETH_ALEN);
824 memcpy(rxb->dst,dst,ETH_ALEN);
825 while(skb->len > ETHERNET_HEADER_SIZE) {
826
827 nSubframe_Length = *((u16 *)(skb->data + 12));
828
829 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
830
831 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
832 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
833 __func__, rxb->nr_subframes);
834 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
835 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
836 printk("The Packet SeqNum is %d\n",SeqNum);
837 return 0;
838 }
839
840
841 skb_pull(skb, ETHERNET_HEADER_SIZE);
842
843#ifdef JOHN_NOCPY
844 sub_skb = skb_clone(skb, GFP_ATOMIC);
845 sub_skb->len = nSubframe_Length;
846 sub_skb->tail = sub_skb->data + nSubframe_Length;
847#else
848
849 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
850 if (!sub_skb)
851 return 0;
852 skb_reserve(sub_skb, 12);
853 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
854 memcpy(data_ptr, skb->data, nSubframe_Length);
855#endif
856 rxb->subframes[rxb->nr_subframes++] = sub_skb;
857 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
858 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
859 break;
860 }
861 skb_pull(skb, nSubframe_Length);
862
863 if (skb->len != 0) {
864 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
865 if (nPadding_Length == 4) {
866 nPadding_Length = 0;
867 }
868
869 if (skb->len < nPadding_Length) {
870 return 0;
871 }
872
873 skb_pull(skb, nPadding_Length);
874 }
875 }
876#ifdef JOHN_NOCPY
877 dev_kfree_skb(skb);
878#endif
879
880
881
882 return rxb->nr_subframes;
883 }
884}
885
886
887
888
889int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
890 struct ieee80211_rx_stats *rx_stats)
891{
892 struct net_device *dev = ieee->dev;
893 struct rtl_80211_hdr_4addr *hdr;
894
895
896 size_t hdrlen;
897 u16 fc, type, stype, sc;
898 struct net_device_stats *stats;
899 unsigned int frag;
900 u8 *payload;
901 u16 ethertype;
902
903 u8 TID = 0;
904 u16 SeqNum = 0;
905 PRX_TS_RECORD pTS = NULL;
906
907
908#ifdef NOT_YET
909 struct net_device *wds = NULL;
910 struct net_device *wds = NULL;
911 int from_assoc_ap = 0;
912 void *sta = NULL;
913#endif
914
915 u8 dst[ETH_ALEN];
916 u8 src[ETH_ALEN];
917 u8 bssid[ETH_ALEN];
918 struct ieee80211_crypt_data *crypt = NULL;
919 int keyidx = 0;
920
921 int i;
922 struct ieee80211_rxb *rxb = NULL;
923
924 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
925 stats = &ieee->stats;
926
927 if (skb->len < 10) {
928 printk(KERN_INFO "%s: SKB length < 10\n",
929 dev->name);
930 goto rx_dropped;
931 }
932
933 fc = le16_to_cpu(hdr->frame_ctl);
934 type = WLAN_FC_GET_TYPE(fc);
935 stype = WLAN_FC_GET_STYPE(fc);
936 sc = le16_to_cpu(hdr->seq_ctl);
937
938 frag = WLAN_GET_SEQ_FRAG(sc);
939 hdrlen = ieee80211_get_hdrlen(fc);
940
941 if (HTCCheck(ieee, skb->data))
942 {
943 if(net_ratelimit())
944 printk("find HTCControl\n");
945 hdrlen += 4;
946 rx_stats->bContainHTC = true;
947 }
948
949
950#ifdef NOT_YET
951
952
953#ifdef IW_WIRELESS_SPY
954
955 if (iface->spy_data.spy_number > 0) {
956 struct iw_quality wstats;
957 wstats.level = rx_stats->rssi;
958 wstats.noise = rx_stats->noise;
959 wstats.updated = 6;
960
961 wireless_spy_update(dev, hdr->addr2, &wstats);
962 }
963#endif
964 hostap_update_rx_stats(local->ap, hdr, rx_stats);
965#endif
966
967 if (ieee->iw_mode == IW_MODE_MONITOR) {
968 ieee80211_monitor_rx(ieee, skb, rx_stats);
969 stats->rx_packets++;
970 stats->rx_bytes += skb->len;
971 return 1;
972 }
973
974 if (ieee->host_decrypt) {
975 int idx = 0;
976 if (skb->len >= hdrlen + 3)
977 idx = skb->data[hdrlen + 3] >> 6;
978 crypt = ieee->crypt[idx];
979#ifdef NOT_YET
980 sta = NULL;
981
982
983
984
985
986
987
988
989 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
990 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
991 &sta);
992#endif
993
994
995
996 if (crypt && (crypt->ops == NULL ||
997 crypt->ops->decrypt_mpdu == NULL))
998 crypt = NULL;
999
1000 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1001
1002
1003
1004
1005 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1006 " (SA=%pM)\n",
1007 hdr->addr2);
1008 ieee->ieee_stats.rx_discards_undecryptable++;
1009 goto rx_dropped;
1010 }
1011 }
1012
1013 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1014 goto rx_dropped;
1015
1016
1017 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
1018 if (is_duplicate_packet(ieee, hdr))
1019 goto rx_dropped;
1020
1021 }
1022 else
1023 {
1024 PRX_TS_RECORD pRxTS = NULL;
1025
1026 if(GetTs(
1027 ieee,
1028 (PTS_COMMON_INFO *) &pRxTS,
1029 hdr->addr2,
1030 Frame_QoSTID((u8 *)(skb->data)),
1031 RX_DIR,
1032 true))
1033 {
1034
1035
1036 if ((fc & (1<<11)) &&
1037 (frag == pRxTS->RxLastFragNum) &&
1038 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
1039 goto rx_dropped;
1040 }
1041 else
1042 {
1043 pRxTS->RxLastFragNum = frag;
1044 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1045 }
1046 }
1047 else
1048 {
1049 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
1050 goto rx_dropped;
1051 }
1052 }
1053 if (type == IEEE80211_FTYPE_MGMT) {
1054
1055
1056
1057 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1058 goto rx_dropped;
1059 else
1060 goto rx_exit;
1061 }
1062
1063
1064 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1065 case IEEE80211_FCTL_FROMDS:
1066 memcpy(dst, hdr->addr1, ETH_ALEN);
1067 memcpy(src, hdr->addr3, ETH_ALEN);
1068 memcpy(bssid, hdr->addr2, ETH_ALEN);
1069 break;
1070 case IEEE80211_FCTL_TODS:
1071 memcpy(dst, hdr->addr3, ETH_ALEN);
1072 memcpy(src, hdr->addr2, ETH_ALEN);
1073 memcpy(bssid, hdr->addr1, ETH_ALEN);
1074 break;
1075 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1076 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1077 goto rx_dropped;
1078 memcpy(dst, hdr->addr3, ETH_ALEN);
1079 memcpy(src, hdr->addr4, ETH_ALEN);
1080 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1081 break;
1082 case 0:
1083 memcpy(dst, hdr->addr1, ETH_ALEN);
1084 memcpy(src, hdr->addr2, ETH_ALEN);
1085 memcpy(bssid, hdr->addr3, ETH_ALEN);
1086 break;
1087 }
1088
1089#ifdef NOT_YET
1090 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1091 goto rx_dropped;
1092 if (wds) {
1093 skb->dev = dev = wds;
1094 stats = hostap_get_stats(dev);
1095 }
1096
1097 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1098 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1099 ieee->stadev &&
1100 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1101
1102 skb->dev = dev = ieee->stadev;
1103 stats = hostap_get_stats(dev);
1104 from_assoc_ap = 1;
1105 }
1106#endif
1107
1108 dev->last_rx = jiffies;
1109
1110#ifdef NOT_YET
1111 if ((ieee->iw_mode == IW_MODE_MASTER ||
1112 ieee->iw_mode == IW_MODE_REPEAT) &&
1113 !from_assoc_ap) {
1114 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1115 wds != NULL)) {
1116 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1117 case AP_RX_CONTINUE:
1118 break;
1119 case AP_RX_DROP:
1120 goto rx_dropped;
1121 case AP_RX_EXIT:
1122 goto rx_exit;
1123 }
1124 }
1125#endif
1126
1127
1128
1129 if (stype != IEEE80211_STYPE_DATA &&
1130 stype != IEEE80211_STYPE_DATA_CFACK &&
1131 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1132 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1133 stype != IEEE80211_STYPE_QOS_DATA
1134 ) {
1135 if (stype != IEEE80211_STYPE_NULLFUNC)
1136 IEEE80211_DEBUG_DROP(
1137 "RX: dropped data frame "
1138 "with no data (type=0x%02x, "
1139 "subtype=0x%02x, len=%d)\n",
1140 type, stype, skb->len);
1141 goto rx_dropped;
1142 }
1143 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1144 goto rx_dropped;
1145
1146
1147
1148 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1149 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1150 {
1151 printk("decrypt frame error\n");
1152 goto rx_dropped;
1153 }
1154
1155
1156 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1157
1158
1159
1160
1161 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1162 int flen;
1163 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1164 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1165
1166 if (!frag_skb) {
1167 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1168 "Rx cannot get skb from fragment "
1169 "cache (morefrag=%d seq=%u frag=%u)\n",
1170 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1171 WLAN_GET_SEQ_SEQ(sc), frag);
1172 goto rx_dropped;
1173 }
1174 flen = skb->len;
1175 if (frag != 0)
1176 flen -= hdrlen;
1177
1178 if (frag_skb->tail + flen > frag_skb->end) {
1179 printk(KERN_WARNING "%s: host decrypted and "
1180 "reassembled frame did not fit skb\n",
1181 dev->name);
1182 ieee80211_frag_cache_invalidate(ieee, hdr);
1183 goto rx_dropped;
1184 }
1185
1186 if (frag == 0) {
1187
1188
1189 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1190 } else {
1191
1192
1193 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1194 flen);
1195 }
1196 dev_kfree_skb_any(skb);
1197 skb = NULL;
1198
1199 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1200
1201
1202
1203 goto rx_exit;
1204 }
1205
1206
1207
1208 skb = frag_skb;
1209 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1210 ieee80211_frag_cache_invalidate(ieee, hdr);
1211 }
1212
1213
1214
1215 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1216 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1217 {
1218 printk("==>decrypt msdu error\n");
1219 goto rx_dropped;
1220 }
1221
1222
1223 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1224 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1225
1226 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1227 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1228 if (
1229 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1230
1231#ifdef CONFIG_IEEE80211_DEBUG
1232
1233
1234 struct eapol *eap = (struct eapol *)(skb->data +
1235 24);
1236 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1237 eap_get_type(eap->type));
1238#endif
1239 } else {
1240 IEEE80211_DEBUG_DROP(
1241 "encryption configured, but RX "
1242 "frame not encrypted (SA=%pM)\n",
1243 hdr->addr2);
1244 goto rx_dropped;
1245 }
1246 }
1247
1248#ifdef CONFIG_IEEE80211_DEBUG
1249 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1250 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1251 struct eapol *eap = (struct eapol *)(skb->data +
1252 24);
1253 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1254 eap_get_type(eap->type));
1255 }
1256#endif
1257
1258 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1259 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1260 IEEE80211_DEBUG_DROP(
1261 "dropped unencrypted RX data "
1262 "frame from %pM"
1263 " (drop_unencrypted=1)\n",
1264 hdr->addr2);
1265 goto rx_dropped;
1266 }
1267
1268
1269
1270
1271
1272
1273 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1274 && !is_multicast_ether_addr(hdr->addr1))
1275 {
1276 TID = Frame_QoSTID(skb->data);
1277 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1278 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true);
1279 if (TID !=0 && TID !=3)
1280 {
1281 ieee->bis_any_nonbepkts = true;
1282 }
1283 }
1284
1285
1286 payload = skb->data + hdrlen;
1287
1288 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1289 if (!rxb)
1290 goto rx_dropped;
1291
1292
1293 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
1294
1295 for(i =0; i < rxb->nr_subframes; i++) {
1296 dev_kfree_skb(rxb->subframes[i]);
1297 }
1298 kfree(rxb);
1299 rxb = NULL;
1300 goto rx_dropped;
1301 }
1302
1303
1304 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){
1305
1306 for(i = 0; i<rxb->nr_subframes; i++) {
1307 struct sk_buff *sub_skb = rxb->subframes[i];
1308
1309 if (sub_skb) {
1310
1311 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1312 if (sub_skb->len >= 8 &&
1313 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1314 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1315 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1316
1317
1318 skb_pull(sub_skb, SNAP_SIZE);
1319 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1320 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1321 } else {
1322 u16 len;
1323
1324 len = htons(sub_skb->len);
1325 memcpy(skb_push(sub_skb, 2), &len, 2);
1326 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1327 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1328 }
1329
1330 stats->rx_packets++;
1331 stats->rx_bytes += sub_skb->len;
1332 if (is_multicast_ether_addr(dst)) {
1333 stats->multicast++;
1334 }
1335
1336
1337 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1338 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1339 sub_skb->dev = dev;
1340 sub_skb->ip_summed = CHECKSUM_NONE;
1341
1342 ieee->last_rx_ps_time = jiffies;
1343 netif_rx(sub_skb);
1344 }
1345 }
1346 kfree(rxb);
1347 rxb = NULL;
1348
1349 }
1350 else
1351 {
1352 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
1353 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1354 }
1355#ifndef JOHN_NOCPY
1356 dev_kfree_skb(skb);
1357#endif
1358
1359 rx_exit:
1360#ifdef NOT_YET
1361 if (sta)
1362 hostap_handle_sta_release(sta);
1363#endif
1364 return 1;
1365
1366 rx_dropped:
1367 kfree(rxb);
1368 rxb = NULL;
1369 stats->rx_dropped++;
1370
1371
1372
1373
1374 return 0;
1375}
1376EXPORT_SYMBOL(ieee80211_rx);
1377
1378#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1379
1380static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1381
1382
1383
1384
1385
1386static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1387 *info_element, int sub_type)
1388{
1389
1390 if (info_element->qui_subtype != sub_type)
1391 return -1;
1392 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1393 return -1;
1394 if (info_element->qui_type != QOS_OUI_TYPE)
1395 return -1;
1396 if (info_element->version != QOS_VERSION_1)
1397 return -1;
1398
1399 return 0;
1400}
1401
1402
1403
1404
1405
1406static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1407 *element_param, struct ieee80211_info_element
1408 *info_element)
1409{
1410 int ret = 0;
1411 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1412
1413 if ((info_element == NULL) || (element_param == NULL))
1414 return -1;
1415
1416 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1417 memcpy(element_param->info_element.qui, info_element->data,
1418 info_element->len);
1419 element_param->info_element.elementID = info_element->id;
1420 element_param->info_element.length = info_element->len;
1421 } else
1422 ret = -1;
1423 if (ret == 0)
1424 ret = ieee80211_verify_qos_info(&element_param->info_element,
1425 QOS_OUI_PARAM_SUB_TYPE);
1426 return ret;
1427}
1428
1429
1430
1431
1432static int ieee80211_read_qos_info_element(struct
1433 ieee80211_qos_information_element
1434 *element_info, struct ieee80211_info_element
1435 *info_element)
1436{
1437 int ret = 0;
1438 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1439
1440 if (element_info == NULL)
1441 return -1;
1442 if (info_element == NULL)
1443 return -1;
1444
1445 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1446 memcpy(element_info->qui, info_element->data,
1447 info_element->len);
1448 element_info->elementID = info_element->id;
1449 element_info->length = info_element->len;
1450 } else
1451 ret = -1;
1452
1453 if (ret == 0)
1454 ret = ieee80211_verify_qos_info(element_info,
1455 QOS_OUI_INFO_SUB_TYPE);
1456 return ret;
1457}
1458
1459
1460
1461
1462
1463static int ieee80211_qos_convert_ac_to_parameters(struct
1464 ieee80211_qos_parameter_info
1465 *param_elm, struct
1466 ieee80211_qos_parameters
1467 *qos_param)
1468{
1469 int i;
1470 struct ieee80211_qos_ac_parameter *ac_params;
1471 u8 aci;
1472
1473
1474
1475 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1476 ac_params = &(param_elm->ac_params_record[i]);
1477
1478 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1479
1480 if(aci >= QOS_QUEUE_NUM)
1481 continue;
1482 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1483
1484
1485 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1486
1487 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1488
1489 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1490
1491 qos_param->flag[aci] =
1492 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1493 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1494 }
1495 return 0;
1496}
1497
1498
1499
1500
1501
1502
1503static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1504 *info_element,
1505 struct ieee80211_network *network)
1506{
1507 int rc = 0;
1508 struct ieee80211_qos_parameters *qos_param = NULL;
1509 struct ieee80211_qos_information_element qos_info_element;
1510
1511 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1512
1513 if (rc == 0) {
1514 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1515 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1516 } else {
1517 struct ieee80211_qos_parameter_info param_element;
1518
1519 rc = ieee80211_read_qos_param_element(¶m_element,
1520 info_element);
1521 if (rc == 0) {
1522 qos_param = &(network->qos_data.parameters);
1523 ieee80211_qos_convert_ac_to_parameters(¶m_element,
1524 qos_param);
1525 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1526 network->qos_data.param_count =
1527 param_element.info_element.ac_info & 0x0F;
1528 }
1529 }
1530
1531 if (rc == 0) {
1532 IEEE80211_DEBUG_QOS("QoS is supported\n");
1533 network->qos_data.supported = 1;
1534 }
1535 return rc;
1536}
1537
1538#ifdef CONFIG_IEEE80211_DEBUG
1539#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1540
1541static const char *get_info_element_string(u16 id)
1542{
1543 switch (id) {
1544 MFIE_STRING(SSID);
1545 MFIE_STRING(RATES);
1546 MFIE_STRING(FH_SET);
1547 MFIE_STRING(DS_SET);
1548 MFIE_STRING(CF_SET);
1549 MFIE_STRING(TIM);
1550 MFIE_STRING(IBSS_SET);
1551 MFIE_STRING(COUNTRY);
1552 MFIE_STRING(HOP_PARAMS);
1553 MFIE_STRING(HOP_TABLE);
1554 MFIE_STRING(REQUEST);
1555 MFIE_STRING(CHALLENGE);
1556 MFIE_STRING(POWER_CONSTRAINT);
1557 MFIE_STRING(POWER_CAPABILITY);
1558 MFIE_STRING(TPC_REQUEST);
1559 MFIE_STRING(TPC_REPORT);
1560 MFIE_STRING(SUPP_CHANNELS);
1561 MFIE_STRING(CSA);
1562 MFIE_STRING(MEASURE_REQUEST);
1563 MFIE_STRING(MEASURE_REPORT);
1564 MFIE_STRING(QUIET);
1565 MFIE_STRING(IBSS_DFS);
1566
1567 MFIE_STRING(RSN);
1568 MFIE_STRING(RATES_EX);
1569 MFIE_STRING(GENERIC);
1570 MFIE_STRING(QOS_PARAMETER);
1571 default:
1572 return "UNKNOWN";
1573 }
1574}
1575#endif
1576
1577static inline void ieee80211_extract_country_ie(
1578 struct ieee80211_device *ieee,
1579 struct ieee80211_info_element *info_element,
1580 struct ieee80211_network *network,
1581 u8 *addr2
1582)
1583{
1584 if (IS_DOT11D_ENABLE(ieee))
1585 {
1586 if (info_element->len!= 0)
1587 {
1588 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1589 network->CountryIeLen = info_element->len;
1590
1591 if (!IS_COUNTRY_IE_VALID(ieee))
1592 {
1593 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1594 }
1595 }
1596
1597
1598
1599
1600
1601
1602 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
1603 {
1604 UPDATE_CIE_WATCHDOG(ieee);
1605 }
1606 }
1607
1608}
1609
1610int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1611 struct ieee80211_info_element *info_element,
1612 u16 length,
1613 struct ieee80211_network *network,
1614 struct ieee80211_rx_stats *stats)
1615{
1616 u8 i;
1617 short offset;
1618 u16 tmp_htcap_len=0;
1619 u16 tmp_htinfo_len=0;
1620 u16 ht_realtek_agg_len=0;
1621 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1622
1623#ifdef CONFIG_IEEE80211_DEBUG
1624 char rates_str[64];
1625 char *p;
1626#endif
1627
1628 while (length >= sizeof(*info_element)) {
1629 if (sizeof(*info_element) + info_element->len > length) {
1630 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1631 "info_element->len + 2 > left : "
1632 "info_element->len+2=%zd left=%d, id=%d.\n",
1633 info_element->len +
1634 sizeof(*info_element),
1635 length, info_element->id);
1636
1637
1638
1639 break;
1640 }
1641
1642 switch (info_element->id) {
1643 case MFIE_TYPE_SSID:
1644 if (ieee80211_is_empty_essid(info_element->data,
1645 info_element->len)) {
1646 network->flags |= NETWORK_EMPTY_ESSID;
1647 break;
1648 }
1649
1650 network->ssid_len = min(info_element->len,
1651 (u8) IW_ESSID_MAX_SIZE);
1652 memcpy(network->ssid, info_element->data, network->ssid_len);
1653 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1654 memset(network->ssid + network->ssid_len, 0,
1655 IW_ESSID_MAX_SIZE - network->ssid_len);
1656
1657 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1658 network->ssid, network->ssid_len);
1659 break;
1660
1661 case MFIE_TYPE_RATES:
1662#ifdef CONFIG_IEEE80211_DEBUG
1663 p = rates_str;
1664#endif
1665 network->rates_len = min(info_element->len,
1666 MAX_RATES_LENGTH);
1667 for (i = 0; i < network->rates_len; i++) {
1668 network->rates[i] = info_element->data[i];
1669#ifdef CONFIG_IEEE80211_DEBUG
1670 p += snprintf(p, sizeof(rates_str) -
1671 (p - rates_str), "%02X ",
1672 network->rates[i]);
1673#endif
1674 if (ieee80211_is_ofdm_rate
1675 (info_element->data[i])) {
1676 network->flags |= NETWORK_HAS_OFDM;
1677 if (info_element->data[i] &
1678 IEEE80211_BASIC_RATE_MASK)
1679 network->flags &=
1680 ~NETWORK_HAS_CCK;
1681 }
1682 }
1683
1684 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1685 rates_str, network->rates_len);
1686 break;
1687
1688 case MFIE_TYPE_RATES_EX:
1689#ifdef CONFIG_IEEE80211_DEBUG
1690 p = rates_str;
1691#endif
1692 network->rates_ex_len = min(info_element->len,
1693 MAX_RATES_EX_LENGTH);
1694 for (i = 0; i < network->rates_ex_len; i++) {
1695 network->rates_ex[i] = info_element->data[i];
1696#ifdef CONFIG_IEEE80211_DEBUG
1697 p += snprintf(p, sizeof(rates_str) -
1698 (p - rates_str), "%02X ",
1699 network->rates_ex[i]);
1700#endif
1701 if (ieee80211_is_ofdm_rate
1702 (info_element->data[i])) {
1703 network->flags |= NETWORK_HAS_OFDM;
1704 if (info_element->data[i] &
1705 IEEE80211_BASIC_RATE_MASK)
1706 network->flags &=
1707 ~NETWORK_HAS_CCK;
1708 }
1709 }
1710
1711 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1712 rates_str, network->rates_ex_len);
1713 break;
1714
1715 case MFIE_TYPE_DS_SET:
1716 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1717 info_element->data[0]);
1718 network->channel = info_element->data[0];
1719 break;
1720
1721 case MFIE_TYPE_FH_SET:
1722 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1723 break;
1724
1725 case MFIE_TYPE_CF_SET:
1726 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1727 break;
1728
1729 case MFIE_TYPE_TIM:
1730 if(info_element->len < 4)
1731 break;
1732
1733 network->tim.tim_count = info_element->data[0];
1734 network->tim.tim_period = info_element->data[1];
1735
1736 network->dtim_period = info_element->data[1];
1737 if(ieee->state != IEEE80211_LINKED)
1738 break;
1739
1740 network->last_dtim_sta_time[0] = stats->mac_time[0];
1741 network->last_dtim_sta_time[1] = stats->mac_time[1];
1742
1743 network->dtim_data = IEEE80211_DTIM_VALID;
1744
1745 if(info_element->data[0] != 0)
1746 break;
1747
1748 if(info_element->data[2] & 1)
1749 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1750
1751 offset = (info_element->data[2] >> 1)*2;
1752
1753 if(ieee->assoc_id < 8*offset ||
1754 ieee->assoc_id > 8*(offset + info_element->len -3))
1755
1756 break;
1757
1758 offset = (ieee->assoc_id / 8) - offset;
1759
1760 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1761 network->dtim_data |= IEEE80211_DTIM_UCAST;
1762
1763
1764 break;
1765
1766 case MFIE_TYPE_ERP:
1767 network->erp_value = info_element->data[0];
1768 network->flags |= NETWORK_HAS_ERP_VALUE;
1769 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1770 network->erp_value);
1771 break;
1772 case MFIE_TYPE_IBSS_SET:
1773 network->atim_window = info_element->data[0];
1774 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1775 network->atim_window);
1776 break;
1777
1778 case MFIE_TYPE_CHALLENGE:
1779 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1780 break;
1781
1782 case MFIE_TYPE_GENERIC:
1783 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1784 info_element->len);
1785 if (!ieee80211_parse_qos_info_param_IE(info_element,
1786 network))
1787 break;
1788
1789 if (info_element->len >= 4 &&
1790 info_element->data[0] == 0x00 &&
1791 info_element->data[1] == 0x50 &&
1792 info_element->data[2] == 0xf2 &&
1793 info_element->data[3] == 0x01) {
1794 network->wpa_ie_len = min(info_element->len + 2,
1795 MAX_WPA_IE_LEN);
1796 memcpy(network->wpa_ie, info_element,
1797 network->wpa_ie_len);
1798 break;
1799 }
1800
1801#ifdef THOMAS_TURBO
1802 if (info_element->len == 7 &&
1803 info_element->data[0] == 0x00 &&
1804 info_element->data[1] == 0xe0 &&
1805 info_element->data[2] == 0x4c &&
1806 info_element->data[3] == 0x01 &&
1807 info_element->data[4] == 0x02) {
1808 network->Turbo_Enable = 1;
1809 }
1810#endif
1811
1812
1813 if(tmp_htcap_len == 0){
1814 if(info_element->len >= 4 &&
1815 info_element->data[0] == 0x00 &&
1816 info_element->data[1] == 0x90 &&
1817 info_element->data[2] == 0x4c &&
1818 info_element->data[3] == 0x033){
1819
1820 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1821 if(tmp_htcap_len != 0){
1822 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1823 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1824 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1825 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1826 }
1827 }
1828 if(tmp_htcap_len != 0)
1829 network->bssht.bdSupportHT = true;
1830 else
1831 network->bssht.bdSupportHT = false;
1832 }
1833
1834
1835 if(tmp_htinfo_len == 0){
1836 if(info_element->len >= 4 &&
1837 info_element->data[0] == 0x00 &&
1838 info_element->data[1] == 0x90 &&
1839 info_element->data[2] == 0x4c &&
1840 info_element->data[3] == 0x034){
1841
1842 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1843 if(tmp_htinfo_len != 0){
1844 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1845 if(tmp_htinfo_len){
1846 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1847 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1848 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1849 }
1850
1851 }
1852
1853 }
1854 }
1855
1856 if(ieee->aggregation){
1857 if(network->bssht.bdSupportHT){
1858 if(info_element->len >= 4 &&
1859 info_element->data[0] == 0x00 &&
1860 info_element->data[1] == 0xe0 &&
1861 info_element->data[2] == 0x4c &&
1862 info_element->data[3] == 0x02){
1863
1864 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1865 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1866
1867 }
1868 if(ht_realtek_agg_len >= 5){
1869 network->bssht.bdRT2RTAggregation = true;
1870
1871 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1872 network->bssht.bdRT2RTLongSlotTime = true;
1873 }
1874 }
1875
1876 }
1877
1878
1879 {
1880 if ((info_element->len >= 3 &&
1881 info_element->data[0] == 0x00 &&
1882 info_element->data[1] == 0x05 &&
1883 info_element->data[2] == 0xb5) ||
1884 (info_element->len >= 3 &&
1885 info_element->data[0] == 0x00 &&
1886 info_element->data[1] == 0x0a &&
1887 info_element->data[2] == 0xf7) ||
1888 (info_element->len >= 3 &&
1889 info_element->data[0] == 0x00 &&
1890 info_element->data[1] == 0x10 &&
1891 info_element->data[2] == 0x18)){
1892
1893 network->broadcom_cap_exist = true;
1894
1895 }
1896 }
1897 if(info_element->len >= 3 &&
1898 info_element->data[0] == 0x00 &&
1899 info_element->data[1] == 0x0c &&
1900 info_element->data[2] == 0x43)
1901 {
1902 network->ralink_cap_exist = true;
1903 }
1904 else
1905 network->ralink_cap_exist = false;
1906
1907 if((info_element->len >= 3 &&
1908 info_element->data[0] == 0x00 &&
1909 info_element->data[1] == 0x03 &&
1910 info_element->data[2] == 0x7f) ||
1911 (info_element->len >= 3 &&
1912 info_element->data[0] == 0x00 &&
1913 info_element->data[1] == 0x13 &&
1914 info_element->data[2] == 0x74))
1915 {
1916 printk("========>%s(): athros AP is exist\n",__func__);
1917 network->atheros_cap_exist = true;
1918 }
1919 else
1920 network->atheros_cap_exist = false;
1921
1922 if(info_element->len >= 3 &&
1923 info_element->data[0] == 0x00 &&
1924 info_element->data[1] == 0x40 &&
1925 info_element->data[2] == 0x96)
1926 {
1927 network->cisco_cap_exist = true;
1928 }
1929 else
1930 network->cisco_cap_exist = false;
1931
1932 if (info_element->len > 4 &&
1933 info_element->data[0] == 0x00 &&
1934 info_element->data[1] == 0x40 &&
1935 info_element->data[2] == 0x96 &&
1936 info_element->data[3] == 0x01)
1937 {
1938 if(info_element->len == 6)
1939 {
1940 memcpy(network->CcxRmState, &info_element[4], 2);
1941 if(network->CcxRmState[0] != 0)
1942 {
1943 network->bCcxRmEnable = true;
1944 }
1945 else
1946 network->bCcxRmEnable = false;
1947
1948
1949
1950 network->MBssidMask = network->CcxRmState[1] & 0x07;
1951 if(network->MBssidMask != 0)
1952 {
1953 network->bMBssidValid = true;
1954 network->MBssidMask = 0xff << (network->MBssidMask);
1955 cpMacAddr(network->MBssid, network->bssid);
1956 network->MBssid[5] &= network->MBssidMask;
1957 }
1958 else
1959 {
1960 network->bMBssidValid = false;
1961 }
1962 }
1963 else
1964 {
1965 network->bCcxRmEnable = false;
1966 }
1967 }
1968 if (info_element->len > 4 &&
1969 info_element->data[0] == 0x00 &&
1970 info_element->data[1] == 0x40 &&
1971 info_element->data[2] == 0x96 &&
1972 info_element->data[3] == 0x03)
1973 {
1974 if(info_element->len == 5)
1975 {
1976 network->bWithCcxVerNum = true;
1977 network->BssCcxVerNumber = info_element->data[4];
1978 }
1979 else
1980 {
1981 network->bWithCcxVerNum = false;
1982 network->BssCcxVerNumber = 0;
1983 }
1984 }
1985 break;
1986
1987 case MFIE_TYPE_RSN:
1988 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1989 info_element->len);
1990 network->rsn_ie_len = min(info_element->len + 2,
1991 MAX_WPA_IE_LEN);
1992 memcpy(network->rsn_ie, info_element,
1993 network->rsn_ie_len);
1994 break;
1995
1996
1997 case MFIE_TYPE_HT_CAP:
1998 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1999 info_element->len);
2000 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2001 if(tmp_htcap_len != 0){
2002 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2003 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2004 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2005 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2006
2007
2008
2009
2010 network->bssht.bdSupportHT = true;
2011 }
2012 else
2013 network->bssht.bdSupportHT = false;
2014 break;
2015
2016
2017 case MFIE_TYPE_HT_INFO:
2018 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2019 info_element->len);
2020 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2021 if(tmp_htinfo_len){
2022 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2023 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2024 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2025 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2026 }
2027 break;
2028
2029 case MFIE_TYPE_AIRONET:
2030 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2031 info_element->len);
2032 if(info_element->len >IE_CISCO_FLAG_POSITION)
2033 {
2034 network->bWithAironetIE = true;
2035
2036
2037
2038
2039 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2040 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2041 {
2042 network->bCkipSupported = true;
2043 }
2044 else
2045 {
2046 network->bCkipSupported = false;
2047 }
2048 }
2049 else
2050 {
2051 network->bWithAironetIE = false;
2052 network->bCkipSupported = false;
2053 }
2054 break;
2055 case MFIE_TYPE_QOS_PARAMETER:
2056 printk(KERN_ERR
2057 "QoS Error need to parse QOS_PARAMETER IE\n");
2058 break;
2059
2060 case MFIE_TYPE_COUNTRY:
2061 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2062 info_element->len);
2063 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);
2064 break;
2065
2066 default:
2067 IEEE80211_DEBUG_MGMT
2068 ("Unsupported info element: %s (%d)\n",
2069 get_info_element_string(info_element->id),
2070 info_element->id);
2071 break;
2072 }
2073
2074 length -= sizeof(*info_element) + info_element->len;
2075 info_element =
2076 (struct ieee80211_info_element *)&info_element->
2077 data[info_element->len];
2078 }
2079
2080 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2081 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2082 {
2083 network->unknown_cap_exist = true;
2084 }
2085 else
2086 {
2087 network->unknown_cap_exist = false;
2088 }
2089 return 0;
2090}
2091
2092static inline u8 ieee80211_SignalStrengthTranslate(
2093 u8 CurrSS
2094 )
2095{
2096 u8 RetSS;
2097
2098
2099 if(CurrSS >= 71 && CurrSS <= 100)
2100 {
2101 RetSS = 90 + ((CurrSS - 70) / 3);
2102 }
2103 else if(CurrSS >= 41 && CurrSS <= 70)
2104 {
2105 RetSS = 78 + ((CurrSS - 40) / 3);
2106 }
2107 else if(CurrSS >= 31 && CurrSS <= 40)
2108 {
2109 RetSS = 66 + (CurrSS - 30);
2110 }
2111 else if(CurrSS >= 21 && CurrSS <= 30)
2112 {
2113 RetSS = 54 + (CurrSS - 20);
2114 }
2115 else if(CurrSS >= 5 && CurrSS <= 20)
2116 {
2117 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2118 }
2119 else if(CurrSS == 4)
2120 {
2121 RetSS = 36;
2122 }
2123 else if(CurrSS == 3)
2124 {
2125 RetSS = 27;
2126 }
2127 else if(CurrSS == 2)
2128 {
2129 RetSS = 18;
2130 }
2131 else if(CurrSS == 1)
2132 {
2133 RetSS = 9;
2134 }
2135 else
2136 {
2137 RetSS = CurrSS;
2138 }
2139
2140
2141
2142
2143
2144
2145 return RetSS;
2146}
2147
2148
2149static long ieee80211_translate_todbm(u8 signal_strength_index)
2150{
2151 long signal_power;
2152
2153
2154 signal_power = (long)((signal_strength_index + 1) >> 1);
2155 signal_power -= 95;
2156
2157 return signal_power;
2158}
2159
2160static inline int ieee80211_network_init(
2161 struct ieee80211_device *ieee,
2162 struct ieee80211_probe_response *beacon,
2163 struct ieee80211_network *network,
2164 struct ieee80211_rx_stats *stats)
2165{
2166#ifdef CONFIG_IEEE80211_DEBUG
2167
2168
2169#endif
2170
2171 network->qos_data.active = 0;
2172 network->qos_data.supported = 0;
2173 network->qos_data.param_count = 0;
2174 network->qos_data.old_param_count = 0;
2175
2176
2177 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2178 network->capability = le16_to_cpu(beacon->capability);
2179 network->last_scanned = jiffies;
2180 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2181 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2182 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
2183
2184 network->listen_interval = 0x0A;
2185 network->rates_len = network->rates_ex_len = 0;
2186 network->last_associate = 0;
2187 network->ssid_len = 0;
2188 network->flags = 0;
2189 network->atim_window = 0;
2190 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2191 0x3 : 0x0;
2192 network->berp_info_valid = false;
2193 network->broadcom_cap_exist = false;
2194 network->ralink_cap_exist = false;
2195 network->atheros_cap_exist = false;
2196 network->cisco_cap_exist = false;
2197 network->unknown_cap_exist = false;
2198#ifdef THOMAS_TURBO
2199 network->Turbo_Enable = 0;
2200#endif
2201 network->CountryIeLen = 0;
2202 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2203
2204
2205 HTInitializeBssDesc(&network->bssht);
2206 if (stats->freq == IEEE80211_52GHZ_BAND) {
2207
2208 network->channel = stats->received_channel;
2209 } else
2210 network->flags |= NETWORK_HAS_CCK;
2211
2212 network->wpa_ie_len = 0;
2213 network->rsn_ie_len = 0;
2214
2215 if (ieee80211_parse_info_param
2216 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2217 return 1;
2218
2219 network->mode = 0;
2220 if (stats->freq == IEEE80211_52GHZ_BAND)
2221 network->mode = IEEE_A;
2222 else {
2223 if (network->flags & NETWORK_HAS_OFDM)
2224 network->mode |= IEEE_G;
2225 if (network->flags & NETWORK_HAS_CCK)
2226 network->mode |= IEEE_B;
2227 }
2228
2229 if (network->mode == 0) {
2230 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2231 "network.\n",
2232 escape_essid(network->ssid,
2233 network->ssid_len),
2234 network->bssid);
2235 return 1;
2236 }
2237
2238 if(network->bssht.bdSupportHT){
2239 if(network->mode == IEEE_A)
2240 network->mode = IEEE_N_5G;
2241 else if(network->mode & (IEEE_G | IEEE_B))
2242 network->mode = IEEE_N_24G;
2243 }
2244 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2245 network->flags |= NETWORK_EMPTY_ESSID;
2246
2247 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2248
2249 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2250
2251 memcpy(&network->stats, stats, sizeof(network->stats));
2252
2253 return 0;
2254}
2255
2256static inline int is_same_network(struct ieee80211_network *src,
2257 struct ieee80211_network *dst, struct ieee80211_device *ieee)
2258{
2259
2260
2261
2262
2263 return
2264 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2265 (src->channel == dst->channel) &&
2266 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2267
2268 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2269 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2270 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2271 ((src->capability & WLAN_CAPABILITY_BSS) ==
2272 (dst->capability & WLAN_CAPABILITY_BSS)));
2273}
2274
2275static inline void update_network(struct ieee80211_network *dst,
2276 struct ieee80211_network *src)
2277{
2278 int qos_active;
2279 u8 old_param;
2280
2281 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2282 dst->capability = src->capability;
2283 memcpy(dst->rates, src->rates, src->rates_len);
2284 dst->rates_len = src->rates_len;
2285 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2286 dst->rates_ex_len = src->rates_ex_len;
2287 if (src->ssid_len > 0)
2288 {
2289 memset(dst->ssid, 0, dst->ssid_len);
2290 dst->ssid_len = src->ssid_len;
2291 memcpy(dst->ssid, src->ssid, src->ssid_len);
2292 }
2293 dst->mode = src->mode;
2294 dst->flags = src->flags;
2295 dst->time_stamp[0] = src->time_stamp[0];
2296 dst->time_stamp[1] = src->time_stamp[1];
2297 if (src->flags & NETWORK_HAS_ERP_VALUE)
2298 {
2299 dst->erp_value = src->erp_value;
2300 dst->berp_info_valid = src->berp_info_valid = true;
2301 }
2302 dst->beacon_interval = src->beacon_interval;
2303 dst->listen_interval = src->listen_interval;
2304 dst->atim_window = src->atim_window;
2305 dst->dtim_period = src->dtim_period;
2306 dst->dtim_data = src->dtim_data;
2307 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2308 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2309 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2310
2311 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2312 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2313 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2314 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2315 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2316 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2317 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2318 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2319 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2320 dst->ralink_cap_exist = src->ralink_cap_exist;
2321 dst->atheros_cap_exist = src->atheros_cap_exist;
2322 dst->cisco_cap_exist = src->cisco_cap_exist;
2323 dst->unknown_cap_exist = src->unknown_cap_exist;
2324 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2325 dst->wpa_ie_len = src->wpa_ie_len;
2326 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2327 dst->rsn_ie_len = src->rsn_ie_len;
2328
2329 dst->last_scanned = jiffies;
2330
2331
2332 qos_active = dst->qos_data.active;
2333
2334 old_param = dst->qos_data.param_count;
2335 if(dst->flags & NETWORK_HAS_QOS_MASK)
2336 memcpy(&dst->qos_data, &src->qos_data,
2337 sizeof(struct ieee80211_qos_data));
2338 else {
2339 dst->qos_data.supported = src->qos_data.supported;
2340 dst->qos_data.param_count = src->qos_data.param_count;
2341 }
2342
2343 if (dst->qos_data.supported == 1) {
2344 dst->QoS_Enable = 1;
2345 if(dst->ssid_len)
2346 IEEE80211_DEBUG_QOS
2347 ("QoS the network %s is QoS supported\n",
2348 dst->ssid);
2349 else
2350 IEEE80211_DEBUG_QOS
2351 ("QoS the network is QoS supported\n");
2352 }
2353 dst->qos_data.active = qos_active;
2354 dst->qos_data.old_param_count = old_param;
2355
2356
2357 dst->wmm_info = src->wmm_info;
2358 if (src->wmm_param[0].aci_aifsn|| \
2359 src->wmm_param[1].aci_aifsn|| \
2360 src->wmm_param[2].aci_aifsn|| \
2361 src->wmm_param[3].aci_aifsn) {
2362 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2363 }
2364
2365#ifdef THOMAS_TURBO
2366 dst->Turbo_Enable = src->Turbo_Enable;
2367#endif
2368
2369 dst->CountryIeLen = src->CountryIeLen;
2370 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2371
2372
2373 dst->bWithAironetIE = src->bWithAironetIE;
2374 dst->bCkipSupported = src->bCkipSupported;
2375 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2376 dst->bCcxRmEnable = src->bCcxRmEnable;
2377 dst->MBssidMask = src->MBssidMask;
2378 dst->bMBssidValid = src->bMBssidValid;
2379 memcpy(dst->MBssid, src->MBssid, 6);
2380 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2381 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2382
2383}
2384
2385static inline int is_beacon(__le16 fc)
2386{
2387 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2388}
2389
2390static inline void ieee80211_process_probe_response(
2391 struct ieee80211_device *ieee,
2392 struct ieee80211_probe_response *beacon,
2393 struct ieee80211_rx_stats *stats)
2394{
2395 struct ieee80211_network network;
2396 struct ieee80211_network *target;
2397 struct ieee80211_network *oldest = NULL;
2398#ifdef CONFIG_IEEE80211_DEBUG
2399 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2400#endif
2401 unsigned long flags;
2402 short renew;
2403
2404
2405 memset(&network, 0, sizeof(struct ieee80211_network));
2406 IEEE80211_DEBUG_SCAN(
2407 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2408 escape_essid(info_element->data, info_element->len),
2409 beacon->header.addr3,
2410 (beacon->capability & (1<<0xf)) ? '1' : '0',
2411 (beacon->capability & (1<<0xe)) ? '1' : '0',
2412 (beacon->capability & (1<<0xd)) ? '1' : '0',
2413 (beacon->capability & (1<<0xc)) ? '1' : '0',
2414 (beacon->capability & (1<<0xb)) ? '1' : '0',
2415 (beacon->capability & (1<<0xa)) ? '1' : '0',
2416 (beacon->capability & (1<<0x9)) ? '1' : '0',
2417 (beacon->capability & (1<<0x8)) ? '1' : '0',
2418 (beacon->capability & (1<<0x7)) ? '1' : '0',
2419 (beacon->capability & (1<<0x6)) ? '1' : '0',
2420 (beacon->capability & (1<<0x5)) ? '1' : '0',
2421 (beacon->capability & (1<<0x4)) ? '1' : '0',
2422 (beacon->capability & (1<<0x3)) ? '1' : '0',
2423 (beacon->capability & (1<<0x2)) ? '1' : '0',
2424 (beacon->capability & (1<<0x1)) ? '1' : '0',
2425 (beacon->capability & (1<<0x0)) ? '1' : '0');
2426
2427 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2428 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2429 escape_essid(info_element->data,
2430 info_element->len),
2431 beacon->header.addr3,
2432 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2433 IEEE80211_STYPE_PROBE_RESP ?
2434 "PROBE RESPONSE" : "BEACON");
2435 return;
2436 }
2437
2438
2439
2440
2441
2442
2443
2444
2445 if (!IsLegalChannel(ieee, network.channel))
2446 return;
2447 if (ieee->bGlobalDomain)
2448 {
2449 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2450 {
2451
2452 if(IS_COUNTRY_IE_VALID(ieee) )
2453 {
2454 if (!IsLegalChannel(ieee, network.channel)) {
2455 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2456 return;
2457 }
2458 }
2459
2460 else
2461 {
2462
2463 if (network.channel > 11)
2464 {
2465 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2466 return;
2467 }
2468 }
2469 }
2470 else
2471 {
2472
2473 if(IS_COUNTRY_IE_VALID(ieee) )
2474 {
2475 if (!IsLegalChannel(ieee, network.channel)) {
2476 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2477 return;
2478 }
2479 }
2480
2481 else
2482 {
2483
2484 if (network.channel > 14)
2485 {
2486 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2487 return;
2488 }
2489 }
2490 }
2491 }
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503 spin_lock_irqsave(&ieee->lock, flags);
2504
2505 if (is_same_network(&ieee->current_network, &network, ieee)) {
2506 update_network(&ieee->current_network, &network);
2507 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2508 && ieee->current_network.berp_info_valid){
2509 if(ieee->current_network.erp_value& ERP_UseProtection)
2510 ieee->current_network.buseprotection = true;
2511 else
2512 ieee->current_network.buseprotection = false;
2513 }
2514 if(is_beacon(beacon->header.frame_ctl))
2515 {
2516 if(ieee->state == IEEE80211_LINKED)
2517 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2518 }
2519 else
2520 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2521 }
2522
2523 list_for_each_entry(target, &ieee->network_list, list) {
2524 if (is_same_network(target, &network, ieee))
2525 break;
2526 if ((oldest == NULL) ||
2527 (target->last_scanned < oldest->last_scanned))
2528 oldest = target;
2529 }
2530
2531
2532
2533 if (&target->list == &ieee->network_list) {
2534 if (list_empty(&ieee->network_free_list)) {
2535
2536 list_del(&oldest->list);
2537 target = oldest;
2538 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2539 "network list.\n",
2540 escape_essid(target->ssid,
2541 target->ssid_len),
2542 target->bssid);
2543 } else {
2544
2545 target = list_entry(ieee->network_free_list.next,
2546 struct ieee80211_network, list);
2547 list_del(ieee->network_free_list.next);
2548 }
2549
2550
2551#ifdef CONFIG_IEEE80211_DEBUG
2552 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2553 escape_essid(network.ssid,
2554 network.ssid_len),
2555 network.bssid,
2556 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2557 IEEE80211_STYPE_PROBE_RESP ?
2558 "PROBE RESPONSE" : "BEACON");
2559#endif
2560 memcpy(target, &network, sizeof(*target));
2561 list_add_tail(&target->list, &ieee->network_list);
2562 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2563 ieee80211_softmac_new_net(ieee,&network);
2564 } else {
2565 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2566 escape_essid(target->ssid,
2567 target->ssid_len),
2568 target->bssid,
2569 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2570 IEEE80211_STYPE_PROBE_RESP ?
2571 "PROBE RESPONSE" : "BEACON");
2572
2573
2574
2575
2576
2577 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2578
2579 if(is_beacon(beacon->header.frame_ctl) == 0)
2580 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2581
2582
2583 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2584 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2585 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2586 renew = 1;
2587
2588
2589 update_network(target, &network);
2590 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2591 ieee80211_softmac_new_net(ieee,&network);
2592 }
2593
2594 spin_unlock_irqrestore(&ieee->lock, flags);
2595 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2596 (ieee->state == IEEE80211_LINKED)) {
2597 if (ieee->handle_beacon != NULL) {
2598 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2599 }
2600 }
2601}
2602
2603void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2604 struct rtl_80211_hdr_4addr *header,
2605 struct ieee80211_rx_stats *stats)
2606{
2607 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2608
2609 case IEEE80211_STYPE_BEACON:
2610 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2611 WLAN_FC_GET_STYPE(header->frame_ctl));
2612 IEEE80211_DEBUG_SCAN("Beacon\n");
2613 ieee80211_process_probe_response(
2614 ieee, (struct ieee80211_probe_response *)header, stats);
2615 break;
2616
2617 case IEEE80211_STYPE_PROBE_RESP:
2618 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2619 WLAN_FC_GET_STYPE(header->frame_ctl));
2620 IEEE80211_DEBUG_SCAN("Probe response\n");
2621 ieee80211_process_probe_response(
2622 ieee, (struct ieee80211_probe_response *)header, stats);
2623 break;
2624
2625 }
2626}
2627EXPORT_SYMBOL(ieee80211_rx_mgt);
2628
