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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 <asm/uaccess.h>
42#include <linux/ctype.h>
43
44#include "ieee80211.h"
45#ifdef ENABLE_DOT11D
46#include "dot11d.h"
47#endif
48static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
49 struct sk_buff *skb,
50 struct ieee80211_rx_stats *rx_stats)
51{
52 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
53 u16 fc = le16_to_cpu(hdr->frame_ctl);
54
55 skb->dev = ieee->dev;
56 skb_reset_mac_header(skb);
57
58 skb_pull(skb, ieee80211_get_hdrlen(fc));
59 skb->pkt_type = PACKET_OTHERHOST;
60 skb->protocol = __constant_htons(ETH_P_80211_RAW);
61 memset(skb->cb, 0, sizeof(skb->cb));
62 netif_rx(skb);
63}
64
65
66
67static struct ieee80211_frag_entry *
68ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
69 unsigned int frag, u8 tid,u8 *src, u8 *dst)
70{
71 struct ieee80211_frag_entry *entry;
72 int i;
73
74 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
75 entry = &ieee->frag_cache[tid][i];
76 if (entry->skb != NULL &&
77 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
78 IEEE80211_DEBUG_FRAG(
79 "expiring fragment cache entry "
80 "seq=%u last_frag=%u\n",
81 entry->seq, entry->last_frag);
82 dev_kfree_skb_any(entry->skb);
83 entry->skb = NULL;
84 }
85
86 if (entry->skb != NULL && entry->seq == seq &&
87 (entry->last_frag + 1 == frag || frag == -1) &&
88 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
89 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
90 return entry;
91 }
92
93 return NULL;
94}
95
96
97static struct sk_buff *
98ieee80211_frag_cache_get(struct ieee80211_device *ieee,
99 struct ieee80211_hdr_4addr *hdr)
100{
101 struct sk_buff *skb = NULL;
102 u16 fc = le16_to_cpu(hdr->frame_ctl);
103 u16 sc = le16_to_cpu(hdr->seq_ctl);
104 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
105 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
106 struct ieee80211_frag_entry *entry;
107 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
108 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
109 u8 tid;
110
111 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
112 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
113 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
114 tid = UP2AC(tid);
115 tid ++;
116 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
117 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
118 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
119 tid = UP2AC(tid);
120 tid ++;
121 } else {
122 tid = 0;
123 }
124
125 if (frag == 0) {
126
127 skb = dev_alloc_skb(ieee->dev->mtu +
128 sizeof(struct ieee80211_hdr_4addr) +
129 8 +
130 2 +
131 8 +
132 ETH_ALEN +
133 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) );
134 if (skb == NULL)
135 return NULL;
136
137 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
138 ieee->frag_next_idx[tid]++;
139 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
140 ieee->frag_next_idx[tid] = 0;
141
142 if (entry->skb != NULL)
143 dev_kfree_skb_any(entry->skb);
144
145 entry->first_frag_time = jiffies;
146 entry->seq = seq;
147 entry->last_frag = frag;
148 entry->skb = skb;
149 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
150 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
151 } else {
152
153
154 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
155 hdr->addr1);
156 if (entry != NULL) {
157 entry->last_frag = frag;
158 skb = entry->skb;
159 }
160 }
161
162 return skb;
163}
164
165
166
167static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
168 struct ieee80211_hdr_4addr *hdr)
169{
170 u16 fc = le16_to_cpu(hdr->frame_ctl);
171 u16 sc = le16_to_cpu(hdr->seq_ctl);
172 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
173 struct ieee80211_frag_entry *entry;
174 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
175 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
176 u8 tid;
177
178 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
179 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
180 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
181 tid = UP2AC(tid);
182 tid ++;
183 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
184 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
185 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
186 tid = UP2AC(tid);
187 tid ++;
188 } else {
189 tid = 0;
190 }
191
192 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
193 hdr->addr1);
194
195 if (entry == NULL) {
196 IEEE80211_DEBUG_FRAG(
197 "could not invalidate fragment cache "
198 "entry (seq=%u)\n", seq);
199 return -1;
200 }
201
202 entry->skb = NULL;
203 return 0;
204}
205
206
207
208
209
210
211
212
213static inline int
214ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
215 struct ieee80211_rx_stats *rx_stats, u16 type,
216 u16 stype)
217{
218
219
220
221
222 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
223
224 rx_stats->len = skb->len;
225 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
226 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))
227 {
228 dev_kfree_skb_any(skb);
229 return 0;
230 }
231
232 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
233
234 dev_kfree_skb_any(skb);
235
236 return 0;
237
238 #ifdef NOT_YET
239 if (ieee->iw_mode == IW_MODE_MASTER) {
240 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
241 ieee->dev->name);
242 return 0;
243 }
244
245 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
246 if (stype == WLAN_FC_STYPE_BEACON &&
247 ieee->iw_mode == IW_MODE_MASTER) {
248 struct sk_buff *skb2;
249
250
251 skb2 = skb_clone(skb, GFP_ATOMIC);
252 if (skb2)
253 hostap_rx(skb2->dev, skb2, rx_stats);
254 }
255
256
257
258 ieee->apdevstats.rx_packets++;
259 ieee->apdevstats.rx_bytes += skb->len;
260 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
261 return 0;
262 }
263
264 if (ieee->iw_mode == IW_MODE_MASTER) {
265 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
266 printk(KERN_DEBUG "%s: unknown management frame "
267 "(type=0x%02x, stype=0x%02x) dropped\n",
268 skb->dev->name, type, stype);
269 return -1;
270 }
271
272 hostap_rx(skb->dev, skb, rx_stats);
273 return 0;
274 }
275
276 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
277 "received in non-Host AP mode\n", skb->dev->name);
278 return -1;
279 #endif
280}
281
282
283
284
285
286static unsigned char rfc1042_header[] =
287{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
288
289static unsigned char bridge_tunnel_header[] =
290{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
291
292
293
294static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
295 struct sk_buff *skb, size_t hdrlen)
296{
297 struct net_device *dev = ieee->dev;
298 u16 fc, ethertype;
299 struct ieee80211_hdr_4addr *hdr;
300 u8 *pos;
301
302 if (skb->len < 24)
303 return 0;
304
305 if (ieee->hwsec_active)
306 {
307 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
308 tcb_desc->bHwSec = 1;
309
310 if(ieee->need_sw_enc)
311 tcb_desc->bHwSec = 0;
312 }
313
314 hdr = (struct ieee80211_hdr_4addr *) skb->data;
315 fc = le16_to_cpu(hdr->frame_ctl);
316
317
318 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
319 IEEE80211_FCTL_TODS &&
320 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
321 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
322
323 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
324 IEEE80211_FCTL_FROMDS &&
325 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
326
327 } else
328 return 0;
329
330 if (skb->len < 24 + 8)
331 return 0;
332
333
334 pos = skb->data + hdrlen;
335 ethertype = (pos[6] << 8) | pos[7];
336 if (ethertype == ETH_P_PAE)
337 return 1;
338
339 return 0;
340}
341
342
343static inline int
344ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
345 struct ieee80211_crypt_data *crypt)
346{
347 struct ieee80211_hdr_4addr *hdr;
348 int res, hdrlen;
349
350 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
351 return 0;
352
353 if (ieee->hwsec_active)
354 {
355 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
356 tcb_desc->bHwSec = 1;
357 }
358
359 hdr = (struct ieee80211_hdr_4addr *) skb->data;
360 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
361
362#ifdef CONFIG_IEEE80211_CRYPT_TKIP
363 if (ieee->tkip_countermeasures &&
364 strcmp(crypt->ops->name, "TKIP") == 0) {
365 if (net_ratelimit()) {
366 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
367 "received packet from %pM\n",
368 ieee->dev->name, hdr->addr2);
369 }
370 return -1;
371 }
372#endif
373
374 atomic_inc(&crypt->refcnt);
375 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
376 atomic_dec(&crypt->refcnt);
377 if (res < 0) {
378 IEEE80211_DEBUG_DROP(
379 "decryption failed (SA=%pM"
380 ") res=%d\n", hdr->addr2, res);
381 if (res == -2)
382 IEEE80211_DEBUG_DROP("Decryption failed ICV "
383 "mismatch (key %d)\n",
384 skb->data[hdrlen + 3] >> 6);
385 ieee->ieee_stats.rx_discards_undecryptable++;
386 return -1;
387 }
388
389 return res;
390}
391
392
393
394static inline int
395ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
396 int keyidx, struct ieee80211_crypt_data *crypt)
397{
398 struct ieee80211_hdr_4addr *hdr;
399 int res, hdrlen;
400
401 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
402 return 0;
403 if (ieee->hwsec_active)
404 {
405 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
406 tcb_desc->bHwSec = 1;
407
408 if(ieee->need_sw_enc)
409 tcb_desc->bHwSec = 0;
410
411 }
412
413 hdr = (struct ieee80211_hdr_4addr *) skb->data;
414 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
415
416 atomic_inc(&crypt->refcnt);
417 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
418 atomic_dec(&crypt->refcnt);
419 if (res < 0) {
420 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
421 " (SA=%pM keyidx=%d)\n",
422 ieee->dev->name, hdr->addr2, keyidx);
423 return -1;
424 }
425
426 return 0;
427}
428
429
430
431#define IEEE_PACKET_RETRY_TIME (5*HZ)
432static int is_duplicate_packet(struct ieee80211_device *ieee,
433 struct ieee80211_hdr_4addr *header)
434{
435 u16 fc = le16_to_cpu(header->frame_ctl);
436 u16 sc = le16_to_cpu(header->seq_ctl);
437 u16 seq = WLAN_GET_SEQ_SEQ(sc);
438 u16 frag = WLAN_GET_SEQ_FRAG(sc);
439 u16 *last_seq, *last_frag;
440 unsigned long *last_time;
441 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
442 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
443 u8 tid;
444
445
446
447 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
448 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
449 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
450 tid = UP2AC(tid);
451 tid ++;
452 } else if(IEEE80211_QOS_HAS_SEQ(fc)) {
453 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
454 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
455 tid = UP2AC(tid);
456 tid ++;
457 } else {
458 tid = 0;
459 }
460
461 switch (ieee->iw_mode) {
462 case IW_MODE_ADHOC:
463 {
464 struct list_head *p;
465 struct ieee_ibss_seq *entry = NULL;
466 u8 *mac = header->addr2;
467 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
468
469 list_for_each(p, &ieee->ibss_mac_hash[index]) {
470 entry = list_entry(p, struct ieee_ibss_seq, list);
471 if (!memcmp(entry->mac, mac, ETH_ALEN))
472 break;
473 }
474
475 if (p == &ieee->ibss_mac_hash[index]) {
476 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
477 if (!entry) {
478 printk(KERN_WARNING "Cannot malloc new mac entry\n");
479 return 0;
480 }
481 memcpy(entry->mac, mac, ETH_ALEN);
482 entry->seq_num[tid] = seq;
483 entry->frag_num[tid] = frag;
484 entry->packet_time[tid] = jiffies;
485 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
486 return 0;
487 }
488 last_seq = &entry->seq_num[tid];
489 last_frag = &entry->frag_num[tid];
490 last_time = &entry->packet_time[tid];
491 break;
492 }
493
494 case IW_MODE_INFRA:
495 last_seq = &ieee->last_rxseq_num[tid];
496 last_frag = &ieee->last_rxfrag_num[tid];
497 last_time = &ieee->last_packet_time[tid];
498
499 break;
500 default:
501 return 0;
502 }
503
504 if ((*last_seq == seq) &&
505 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
506 if (*last_frag == frag){
507 goto drop;
508
509 }
510 if (*last_frag + 1 != frag)
511
512 goto drop;
513 } else
514 *last_seq = seq;
515
516 *last_frag = frag;
517 *last_time = jiffies;
518 return 0;
519
520drop:
521 return 1;
522}
523bool
524AddReorderEntry(
525 PRX_TS_RECORD pTS,
526 PRX_REORDER_ENTRY pReorderEntry
527 )
528{
529 struct list_head *pList = &pTS->RxPendingPktList;
530
531 while(pList->next != &pTS->RxPendingPktList)
532 {
533 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
534 {
535 pList = pList->next;
536 }
537 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
538 {
539 return false;
540 }
541 else
542 {
543 break;
544 }
545 }
546
547 pReorderEntry->List.next = pList->next;
548 pReorderEntry->List.next->prev = &pReorderEntry->List;
549 pReorderEntry->List.prev = pList;
550 pList->next = &pReorderEntry->List;
551
552 return true;
553}
554
555void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
556{
557 u8 i = 0 , j=0;
558 u16 ethertype;
559
560 for(j = 0; j<index; j++)
561 {
562
563 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
564 for(i = 0; i<prxb->nr_subframes; i++) {
565 struct sk_buff *sub_skb = prxb->subframes[i];
566
567
568 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
569 if (sub_skb->len >= 8 &&
570 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
571 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
572 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
573
574
575 skb_pull(sub_skb, SNAP_SIZE);
576 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
577 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
578 } else {
579 u16 len;
580
581 len = htons(sub_skb->len);
582 memcpy(skb_push(sub_skb, 2), &len, 2);
583 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
584 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
585 }
586
587
588 if (sub_skb) {
589 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
590 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
591 sub_skb->dev = ieee->dev;
592 sub_skb->ip_summed = CHECKSUM_NONE;
593 ieee->last_rx_ps_time = jiffies;
594 netif_rx(sub_skb);
595 }
596 }
597 kfree(prxb);
598 prxb = NULL;
599 }
600}
601
602
603void RxReorderIndicatePacket( struct ieee80211_device *ieee,
604 struct ieee80211_rxb* prxb,
605 PRX_TS_RECORD pTS,
606 u16 SeqNum)
607{
608 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
609 PRX_REORDER_ENTRY pReorderEntry = NULL;
610 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
611 u8 WinSize = pHTInfo->RxReorderWinSize;
612 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
613 u8 index = 0;
614 bool bMatchWinStart = false, bPktInBuf = false;
615 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
616
617
618 if(pTS->RxIndicateSeq == 0xffff) {
619 pTS->RxIndicateSeq = SeqNum;
620 }
621
622
623 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
624 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
625 pTS->RxIndicateSeq, SeqNum);
626 pHTInfo->RxReorderDropCounter++;
627 {
628 int i;
629 for(i =0; i < prxb->nr_subframes; i++) {
630 dev_kfree_skb(prxb->subframes[i]);
631 }
632 kfree(prxb);
633 prxb = NULL;
634 }
635 return;
636 }
637
638
639
640
641
642
643 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
644 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
645 bMatchWinStart = true;
646 } else if(SN_LESS(WinEnd, SeqNum)) {
647 if(SeqNum >= (WinSize - 1)) {
648 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
649 } else {
650 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
651 }
652 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
653 }
654
655
656
657
658
659
660
661
662
663
664 if(bMatchWinStart) {
665
666 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
667 pTS->RxIndicateSeq, SeqNum);
668 prxbIndicateArray[0] = prxb;
669 index = 1;
670 } else {
671
672 if(!list_empty(&ieee->RxReorder_Unused_List)) {
673 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
674 list_del_init(&pReorderEntry->List);
675
676
677 pReorderEntry->SeqNum = SeqNum;
678 pReorderEntry->prxb = prxb;
679
680 if(!AddReorderEntry(pTS, pReorderEntry)) {
681 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
682 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
683 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
684 {
685 int i;
686 for(i =0; i < prxb->nr_subframes; i++) {
687 dev_kfree_skb(prxb->subframes[i]);
688 }
689 kfree(prxb);
690 prxb = NULL;
691 }
692 } else {
693 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
694 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
695 }
696 }
697 else {
698
699
700
701
702
703 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
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 }
713 }
714
715
716 while(!list_empty(&pTS->RxPendingPktList)) {
717 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
718#if 1
719 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
720 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
721 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
722 {
723
724 if(index >= REORDER_WIN_SIZE) {
725 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
726 bPktInBuf = true;
727 break;
728 }
729
730 list_del_init(&pReorderEntry->List);
731
732 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
733 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
734
735 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
736 prxbIndicateArray[index] = pReorderEntry->prxb;
737 index++;
738
739 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
740 } else {
741 bPktInBuf = true;
742 break;
743 }
744#endif
745 }
746
747
748 if(index>0) {
749
750 if (timer_pending(&pTS->RxPktPendingTimer))
751 del_timer_sync(&pTS->RxPktPendingTimer);
752 pTS->RxTimeoutIndicateSeq = 0xffff;
753
754
755 if(index>REORDER_WIN_SIZE){
756 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
757 return;
758 }
759 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
760 bPktInBuf = false;
761 }
762
763 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
764
765 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
766 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
767
768 mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime));
769 }
770}
771
772u8 parse_subframe(struct ieee80211_device* ieee,struct sk_buff *skb,
773 struct ieee80211_rx_stats *rx_stats,
774 struct ieee80211_rxb *rxb,u8* src,u8* dst)
775{
776 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
777 u16 fc = le16_to_cpu(hdr->frame_ctl);
778
779 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
780 u16 ChkLength;
781 bool bIsAggregateFrame = false;
782 u16 nSubframe_Length;
783 u8 nPadding_Length = 0;
784 u16 SeqNum=0;
785
786 struct sk_buff *sub_skb;
787 u8 *data_ptr;
788
789 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
790
791 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
792 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
793 bIsAggregateFrame = true;
794 }
795
796 if(IEEE80211_QOS_HAS_SEQ(fc)) {
797 LLCOffset += 2;
798 }
799
800 if(rx_stats->bContainHTC) {
801 LLCOffset += sHTCLng;
802 }
803
804 ChkLength = LLCOffset;
805
806 if( skb->len <= ChkLength ) {
807 return 0;
808 }
809
810 skb_pull(skb, LLCOffset);
811 ieee->bIsAggregateFrame = bIsAggregateFrame;
812
813 if(!bIsAggregateFrame) {
814 rxb->nr_subframes = 1;
815#ifdef JOHN_NOCPY
816 rxb->subframes[0] = skb;
817#else
818 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
819#endif
820
821 memcpy(rxb->src,src,ETH_ALEN);
822 memcpy(rxb->dst,dst,ETH_ALEN);
823
824 return 1;
825 } else {
826 rxb->nr_subframes = 0;
827 memcpy(rxb->src,src,ETH_ALEN);
828 memcpy(rxb->dst,dst,ETH_ALEN);
829 while(skb->len > ETHERNET_HEADER_SIZE) {
830
831 nSubframe_Length = *((u16*)(skb->data + 12));
832
833 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
834
835 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
836 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
837 __FUNCTION__,rxb->nr_subframes);
838 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
839 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
840 printk("The Packet SeqNum is %d\n",SeqNum);
841 return 0;
842 }
843
844
845 skb_pull(skb, ETHERNET_HEADER_SIZE);
846
847#ifdef JOHN_NOCPY
848 sub_skb = skb_clone(skb, GFP_ATOMIC);
849 sub_skb->len = nSubframe_Length;
850 sub_skb->tail = sub_skb->data + nSubframe_Length;
851#else
852
853 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
854 skb_reserve(sub_skb, 12);
855 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
856 memcpy(data_ptr,skb->data,nSubframe_Length);
857#endif
858 rxb->subframes[rxb->nr_subframes++] = sub_skb;
859 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
860 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
861 break;
862 }
863 skb_pull(skb,nSubframe_Length);
864
865 if(skb->len != 0) {
866 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
867 if(nPadding_Length == 4) {
868 nPadding_Length = 0;
869 }
870
871 if(skb->len < nPadding_Length) {
872 return 0;
873 }
874
875 skb_pull(skb,nPadding_Length);
876 }
877 }
878#ifdef JOHN_NOCPY
879 dev_kfree_skb(skb);
880#endif
881 return rxb->nr_subframes;
882 }
883}
884
885
886
887
888int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
889 struct ieee80211_rx_stats *rx_stats)
890{
891 struct net_device *dev = ieee->dev;
892 struct ieee80211_hdr_4addr *hdr;
893
894 size_t hdrlen;
895 u16 fc, type, stype, sc;
896 struct net_device_stats *stats;
897 unsigned int frag;
898 u8 *payload;
899 u16 ethertype;
900
901 u8 TID = 0;
902 u16 SeqNum = 0;
903 PRX_TS_RECORD pTS = NULL;
904 bool unicast_packet = false;
905
906#ifdef NOT_YET
907 struct net_device *wds = NULL;
908 struct sk_buff *skb2 = NULL;
909 struct net_device *wds = NULL;
910 int frame_authorized = 0;
911 int from_assoc_ap = 0;
912 void *sta = NULL;
913#endif
914 u8 dst[ETH_ALEN];
915 u8 src[ETH_ALEN];
916 u8 bssid[ETH_ALEN];
917 struct ieee80211_crypt_data *crypt = NULL;
918 int keyidx = 0;
919
920 int i;
921 struct ieee80211_rxb* rxb = NULL;
922
923 hdr = (struct ieee80211_hdr_4addr *)skb->data;
924 stats = &ieee->stats;
925
926 if (skb->len < 10) {
927 printk(KERN_INFO "%s: SKB length < 10\n",
928 dev->name);
929 goto rx_dropped;
930 }
931
932 fc = le16_to_cpu(hdr->frame_ctl);
933 type = WLAN_FC_GET_TYPE(fc);
934 stype = WLAN_FC_GET_STYPE(fc);
935 sc = le16_to_cpu(hdr->seq_ctl);
936
937 frag = WLAN_GET_SEQ_FRAG(sc);
938 hdrlen = ieee80211_get_hdrlen(fc);
939
940 if(HTCCheck(ieee, skb->data))
941 {
942 if(net_ratelimit())
943 printk("find HTCControl\n");
944 hdrlen += 4;
945 rx_stats->bContainHTC = 1;
946 }
947
948#ifdef NOT_YET
949#if WIRELESS_EXT > 15
950
951
952#ifdef IW_WIRELESS_SPY
953
954 if (iface->spy_data.spy_number > 0) {
955 struct iw_quality wstats;
956 wstats.level = rx_stats->rssi;
957 wstats.noise = rx_stats->noise;
958 wstats.updated = 6;
959
960 wireless_spy_update(dev, hdr->addr2, &wstats);
961 }
962#endif
963#endif
964 hostap_update_rx_stats(local->ap, hdr, rx_stats);
965#endif
966
967#if WIRELESS_EXT > 15
968 if (ieee->iw_mode == IW_MODE_MONITOR) {
969 ieee80211_monitor_rx(ieee, skb, rx_stats);
970 stats->rx_packets++;
971 stats->rx_bytes += skb->len;
972 return 1;
973 }
974#endif
975 if (ieee->host_decrypt) {
976 int idx = 0;
977 if (skb->len >= hdrlen + 3)
978 idx = skb->data[hdrlen + 3] >> 6;
979 crypt = ieee->crypt[idx];
980#ifdef NOT_YET
981 sta = NULL;
982
983
984
985
986
987
988
989
990 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
991 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
992 &sta);
993#endif
994
995
996
997 if (crypt && (crypt->ops == NULL ||
998 crypt->ops->decrypt_mpdu == NULL))
999 crypt = NULL;
1000
1001 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1002
1003
1004
1005
1006 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1007 " (SA=%pM)\n",
1008 hdr->addr2);
1009 ieee->ieee_stats.rx_discards_undecryptable++;
1010 goto rx_dropped;
1011 }
1012 }
1013
1014 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1015 goto rx_dropped;
1016
1017
1018 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
1019 if (is_duplicate_packet(ieee, hdr))
1020 goto rx_dropped;
1021
1022 }
1023 else
1024 {
1025 PRX_TS_RECORD pRxTS = NULL;
1026
1027 if(GetTs(
1028 ieee,
1029 (PTS_COMMON_INFO*) &pRxTS,
1030 hdr->addr2,
1031 (u8)Frame_QoSTID((u8*)(skb->data)),
1032 RX_DIR,
1033 true))
1034 {
1035
1036 if( (fc & (1<<11)) &&
1037 (frag == pRxTS->RxLastFragNum) &&
1038 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
1039 {
1040 goto rx_dropped;
1041 }
1042 else
1043 {
1044 pRxTS->RxLastFragNum = frag;
1045 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1046 }
1047 }
1048 else
1049 {
1050 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
1051 goto rx_dropped;
1052 }
1053 }
1054
1055 if (type == IEEE80211_FTYPE_MGMT) {
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 frame_authorized = 0;
1118 break;
1119 case AP_RX_CONTINUE:
1120 frame_authorized = 1;
1121 break;
1122 case AP_RX_DROP:
1123 goto rx_dropped;
1124 case AP_RX_EXIT:
1125 goto rx_exit;
1126 }
1127 }
1128#endif
1129
1130
1131 if (stype != IEEE80211_STYPE_DATA &&
1132 stype != IEEE80211_STYPE_DATA_CFACK &&
1133 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1134 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1135 stype != IEEE80211_STYPE_QOS_DATA
1136 ) {
1137 if (stype != IEEE80211_STYPE_NULLFUNC)
1138 IEEE80211_DEBUG_DROP(
1139 "RX: dropped data frame "
1140 "with no data (type=0x%02x, "
1141 "subtype=0x%02x, len=%d)\n",
1142 type, stype, skb->len);
1143 goto rx_dropped;
1144 }
1145 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1146 goto rx_dropped;
1147
1148#ifdef ENABLE_LPS
1149 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == 1)
1150 && (ieee->polling)) {
1151 if (WLAN_FC_MORE_DATA(fc)) {
1152
1153 ieee80211_sta_ps_send_pspoll_frame(ieee);
1154 } else {
1155 ieee->polling = false;
1156 }
1157 }
1158#endif
1159
1160 ieee->need_sw_enc = 0;
1161
1162 if((!rx_stats->Decrypted)){
1163 ieee->need_sw_enc = 1;
1164 }
1165
1166
1167
1168 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1169 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1170 {
1171 printk("decrypt frame error\n");
1172 goto rx_dropped;
1173 }
1174
1175
1176 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1177
1178
1179
1180
1181 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1182 int flen;
1183 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1184 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1185
1186 if (!frag_skb) {
1187 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1188 "Rx cannot get skb from fragment "
1189 "cache (morefrag=%d seq=%u frag=%u)\n",
1190 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1191 WLAN_GET_SEQ_SEQ(sc), frag);
1192 goto rx_dropped;
1193 }
1194 flen = skb->len;
1195 if (frag != 0)
1196 flen -= hdrlen;
1197
1198 if (frag_skb->tail + flen > frag_skb->end) {
1199 printk(KERN_WARNING "%s: host decrypted and "
1200 "reassembled frame did not fit skb\n",
1201 dev->name);
1202 ieee80211_frag_cache_invalidate(ieee, hdr);
1203 goto rx_dropped;
1204 }
1205
1206 if (frag == 0) {
1207
1208
1209 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1210 } else {
1211
1212
1213 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1214 flen);
1215 }
1216 dev_kfree_skb_any(skb);
1217 skb = NULL;
1218
1219 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1220
1221
1222
1223 goto rx_exit;
1224 }
1225
1226
1227
1228 skb = frag_skb;
1229 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1230 ieee80211_frag_cache_invalidate(ieee, hdr);
1231 }
1232
1233
1234
1235 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1236 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1237 {
1238 printk("==>decrypt msdu error\n");
1239 goto rx_dropped;
1240 }
1241
1242
1243 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1244 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1245
1246 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1247 if((!is_multicast_ether_addr(hdr->addr1)) && (!is_broadcast_ether_addr(hdr->addr1)))
1248 unicast_packet = true;
1249
1250 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1251 if (
1252 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1253
1254#ifdef CONFIG_IEEE80211_DEBUG
1255
1256
1257 struct eapol *eap = (struct eapol *)(skb->data +
1258 24);
1259 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1260 eap_get_type(eap->type));
1261#endif
1262 } else {
1263 IEEE80211_DEBUG_DROP(
1264 "encryption configured, but RX "
1265 "frame not encrypted (SA=%pM)\n",
1266 hdr->addr2);
1267 goto rx_dropped;
1268 }
1269 }
1270
1271#ifdef CONFIG_IEEE80211_DEBUG
1272 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1273 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1274 struct eapol *eap = (struct eapol *)(skb->data +
1275 24);
1276 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1277 eap_get_type(eap->type));
1278 }
1279#endif
1280
1281 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1282 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1283 IEEE80211_DEBUG_DROP(
1284 "dropped unencrypted RX data "
1285 "frame from %pM"
1286 " (drop_unencrypted=1)\n",
1287 hdr->addr2);
1288 goto rx_dropped;
1289 }
1290
1291 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1292 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1293 {
1294 TID = Frame_QoSTID(skb->data);
1295 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1296 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1297 if(TID !=0 && TID !=3)
1298 {
1299 ieee->bis_any_nonbepkts = true;
1300 }
1301 }
1302
1303
1304
1305 payload = skb->data + hdrlen;
1306
1307 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1308 if(rxb == NULL)
1309 {
1310 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1311 goto rx_dropped;
1312 }
1313
1314
1315 if(parse_subframe(ieee, skb,rx_stats,rxb,src,dst) == 0) {
1316
1317 for(i =0; i < rxb->nr_subframes; i++) {
1318 dev_kfree_skb(rxb->subframes[i]);
1319 }
1320 kfree(rxb);
1321 rxb = NULL;
1322 goto rx_dropped;
1323 }
1324
1325#ifdef ENABLE_LPS
1326 if(unicast_packet)
1327 {
1328 if (type == IEEE80211_FTYPE_DATA)
1329 {
1330
1331 if(ieee->bIsAggregateFrame)
1332 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod+=rxb->nr_subframes;
1333 else
1334 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod++;
1335
1336
1337 if((ieee->state == IEEE80211_LINKED) )
1338 {
1339 if( ((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +ieee->LinkDetectInfo.NumTxOkInPeriod) > 8 ) ||
1340 (ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2) )
1341 {
1342 if(ieee->LeisurePSLeave)
1343 ieee->LeisurePSLeave(ieee);
1344 }
1345 }
1346 }
1347 }
1348#endif
1349
1350 ieee->last_rx_ps_time = jiffies;
1351
1352 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1353
1354 for(i = 0; i<rxb->nr_subframes; i++) {
1355 struct sk_buff *sub_skb = rxb->subframes[i];
1356
1357 if (sub_skb) {
1358
1359 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1360 if (sub_skb->len >= 8 &&
1361 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1362 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1363 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1364
1365
1366 skb_pull(sub_skb, SNAP_SIZE);
1367 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1368 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1369 } else {
1370 u16 len;
1371
1372 len = htons(sub_skb->len);
1373 memcpy(skb_push(sub_skb, 2), &len, 2);
1374 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1375 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1376 }
1377
1378 stats->rx_packets++;
1379 stats->rx_bytes += sub_skb->len;
1380 if(is_multicast_ether_addr(dst)) {
1381 stats->multicast++;
1382 }
1383
1384
1385 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1386 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1387 sub_skb->dev = dev;
1388 sub_skb->ip_summed = CHECKSUM_NONE;
1389 netif_rx(sub_skb);
1390 }
1391 }
1392 kfree(rxb);
1393 rxb = NULL;
1394
1395 }
1396 else
1397 {
1398 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1399 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1400 }
1401#ifndef JOHN_NOCPY
1402 dev_kfree_skb(skb);
1403#endif
1404
1405 rx_exit:
1406#ifdef NOT_YET
1407 if (sta)
1408 hostap_handle_sta_release(sta);
1409#endif
1410 return 1;
1411
1412 rx_dropped:
1413 kfree(rxb);
1414 rxb = NULL;
1415 stats->rx_dropped++;
1416
1417
1418
1419
1420 return 0;
1421}
1422
1423#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1424
1425static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1426
1427
1428
1429
1430
1431static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1432 *info_element, int sub_type)
1433{
1434
1435 if (info_element->qui_subtype != sub_type)
1436 return -1;
1437 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1438 return -1;
1439 if (info_element->qui_type != QOS_OUI_TYPE)
1440 return -1;
1441 if (info_element->version != QOS_VERSION_1)
1442 return -1;
1443
1444 return 0;
1445}
1446
1447
1448
1449
1450
1451static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1452 *element_param, struct ieee80211_info_element
1453 *info_element)
1454{
1455 int ret = 0;
1456 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1457
1458 if ((info_element == NULL) || (element_param == NULL))
1459 return -1;
1460
1461 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1462 memcpy(element_param->info_element.qui, info_element->data,
1463 info_element->len);
1464 element_param->info_element.elementID = info_element->id;
1465 element_param->info_element.length = info_element->len;
1466 } else
1467 ret = -1;
1468 if (ret == 0)
1469 ret = ieee80211_verify_qos_info(&element_param->info_element,
1470 QOS_OUI_PARAM_SUB_TYPE);
1471 return ret;
1472}
1473
1474
1475
1476
1477static int ieee80211_read_qos_info_element(struct
1478 ieee80211_qos_information_element
1479 *element_info, struct ieee80211_info_element
1480 *info_element)
1481{
1482 int ret = 0;
1483 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1484
1485 if (element_info == NULL)
1486 return -1;
1487 if (info_element == NULL)
1488 return -1;
1489
1490 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1491 memcpy(element_info->qui, info_element->data,
1492 info_element->len);
1493 element_info->elementID = info_element->id;
1494 element_info->length = info_element->len;
1495 } else
1496 ret = -1;
1497
1498 if (ret == 0)
1499 ret = ieee80211_verify_qos_info(element_info,
1500 QOS_OUI_INFO_SUB_TYPE);
1501 return ret;
1502}
1503
1504
1505
1506
1507
1508static int ieee80211_qos_convert_ac_to_parameters(struct
1509 ieee80211_qos_parameter_info
1510 *param_elm, struct
1511 ieee80211_qos_parameters
1512 *qos_param)
1513{
1514 int rc = 0;
1515 int i;
1516 struct ieee80211_qos_ac_parameter *ac_params;
1517 u8 aci;
1518
1519 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1520 ac_params = &(param_elm->ac_params_record[i]);
1521
1522 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1523
1524 if(aci >= QOS_QUEUE_NUM)
1525 continue;
1526 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1527
1528
1529 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1530
1531 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1532
1533 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1534
1535 qos_param->flag[aci] =
1536 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1537 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1538 }
1539 return rc;
1540}
1541
1542
1543
1544
1545
1546
1547static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1548 *info_element,
1549 struct ieee80211_network *network)
1550{
1551 int rc = 0;
1552 struct ieee80211_qos_parameters *qos_param = NULL;
1553 struct ieee80211_qos_information_element qos_info_element;
1554
1555 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1556
1557 if (rc == 0) {
1558 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1559 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1560 } else {
1561 struct ieee80211_qos_parameter_info param_element;
1562
1563 rc = ieee80211_read_qos_param_element(¶m_element,
1564 info_element);
1565 if (rc == 0) {
1566 qos_param = &(network->qos_data.parameters);
1567 ieee80211_qos_convert_ac_to_parameters(¶m_element,
1568 qos_param);
1569 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1570 network->qos_data.param_count =
1571 param_element.info_element.ac_info & 0x0F;
1572 }
1573 }
1574
1575 if (rc == 0) {
1576 IEEE80211_DEBUG_QOS("QoS is supported\n");
1577 network->qos_data.supported = 1;
1578 }
1579 return rc;
1580}
1581
1582#ifdef CONFIG_IEEE80211_DEBUG
1583#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1584
1585static const char *get_info_element_string(u16 id)
1586{
1587 switch (id) {
1588 MFIE_STRING(SSID);
1589 MFIE_STRING(RATES);
1590 MFIE_STRING(FH_SET);
1591 MFIE_STRING(DS_SET);
1592 MFIE_STRING(CF_SET);
1593 MFIE_STRING(TIM);
1594 MFIE_STRING(IBSS_SET);
1595 MFIE_STRING(COUNTRY);
1596 MFIE_STRING(HOP_PARAMS);
1597 MFIE_STRING(HOP_TABLE);
1598 MFIE_STRING(REQUEST);
1599 MFIE_STRING(CHALLENGE);
1600 MFIE_STRING(POWER_CONSTRAINT);
1601 MFIE_STRING(POWER_CAPABILITY);
1602 MFIE_STRING(TPC_REQUEST);
1603 MFIE_STRING(TPC_REPORT);
1604 MFIE_STRING(SUPP_CHANNELS);
1605 MFIE_STRING(CSA);
1606 MFIE_STRING(MEASURE_REQUEST);
1607 MFIE_STRING(MEASURE_REPORT);
1608 MFIE_STRING(QUIET);
1609 MFIE_STRING(IBSS_DFS);
1610
1611 MFIE_STRING(RSN);
1612 MFIE_STRING(RATES_EX);
1613 MFIE_STRING(GENERIC);
1614 MFIE_STRING(QOS_PARAMETER);
1615 default:
1616 return "UNKNOWN";
1617 }
1618}
1619#endif
1620
1621#ifdef ENABLE_DOT11D
1622static inline void ieee80211_extract_country_ie(
1623 struct ieee80211_device *ieee,
1624 struct ieee80211_info_element *info_element,
1625 struct ieee80211_network *network,
1626 u8 * addr2
1627)
1628{
1629 if(IS_DOT11D_ENABLE(ieee))
1630 {
1631 if(info_element->len!= 0)
1632 {
1633 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1634 network->CountryIeLen = info_element->len;
1635
1636 if(!IS_COUNTRY_IE_VALID(ieee))
1637 {
1638 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1639 }
1640 }
1641
1642
1643
1644
1645
1646
1647 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1648 {
1649 UPDATE_CIE_WATCHDOG(ieee);
1650 }
1651 }
1652
1653}
1654#endif
1655
1656int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1657 struct ieee80211_info_element *info_element,
1658 u16 length,
1659 struct ieee80211_network *network,
1660 struct ieee80211_rx_stats *stats)
1661{
1662 u8 i;
1663 short offset;
1664 u16 tmp_htcap_len=0;
1665 u16 tmp_htinfo_len=0;
1666 u16 ht_realtek_agg_len=0;
1667 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1668#ifdef CONFIG_IEEE80211_DEBUG
1669 char rates_str[64];
1670 char *p;
1671#endif
1672
1673 while (length >= sizeof(*info_element)) {
1674 if (sizeof(*info_element) + info_element->len > length) {
1675 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1676 "info_element->len + 2 > left : "
1677 "info_element->len+2=%zd left=%d, id=%d.\n",
1678 info_element->len +
1679 sizeof(*info_element),
1680 length, info_element->id);
1681
1682
1683
1684 break;
1685 }
1686
1687 switch (info_element->id) {
1688 case MFIE_TYPE_SSID:
1689 if (ieee80211_is_empty_essid(info_element->data,
1690 info_element->len)) {
1691 network->flags |= NETWORK_EMPTY_ESSID;
1692 break;
1693 }
1694
1695 network->ssid_len = min(info_element->len,
1696 (u8) IW_ESSID_MAX_SIZE);
1697 memcpy(network->ssid, info_element->data, network->ssid_len);
1698 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1699 memset(network->ssid + network->ssid_len, 0,
1700 IW_ESSID_MAX_SIZE - network->ssid_len);
1701
1702 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1703 network->ssid, network->ssid_len);
1704 break;
1705
1706 case MFIE_TYPE_RATES:
1707#ifdef CONFIG_IEEE80211_DEBUG
1708 p = rates_str;
1709#endif
1710 network->rates_len = min(info_element->len,
1711 MAX_RATES_LENGTH);
1712 for (i = 0; i < network->rates_len; i++) {
1713 network->rates[i] = info_element->data[i];
1714#ifdef CONFIG_IEEE80211_DEBUG
1715 p += snprintf(p, sizeof(rates_str) -
1716 (p - rates_str), "%02X ",
1717 network->rates[i]);
1718#endif
1719 if (ieee80211_is_ofdm_rate
1720 (info_element->data[i])) {
1721 network->flags |= NETWORK_HAS_OFDM;
1722 if (info_element->data[i] &
1723 IEEE80211_BASIC_RATE_MASK)
1724 network->flags &=
1725 ~NETWORK_HAS_CCK;
1726 }
1727 }
1728
1729 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1730 rates_str, network->rates_len);
1731 break;
1732
1733 case MFIE_TYPE_RATES_EX:
1734#ifdef CONFIG_IEEE80211_DEBUG
1735 p = rates_str;
1736#endif
1737 network->rates_ex_len = min(info_element->len,
1738 MAX_RATES_EX_LENGTH);
1739 for (i = 0; i < network->rates_ex_len; i++) {
1740 network->rates_ex[i] = info_element->data[i];
1741#ifdef CONFIG_IEEE80211_DEBUG
1742 p += snprintf(p, sizeof(rates_str) -
1743 (p - rates_str), "%02X ",
1744 network->rates[i]);
1745#endif
1746 if (ieee80211_is_ofdm_rate
1747 (info_element->data[i])) {
1748 network->flags |= NETWORK_HAS_OFDM;
1749 if (info_element->data[i] &
1750 IEEE80211_BASIC_RATE_MASK)
1751 network->flags &=
1752 ~NETWORK_HAS_CCK;
1753 }
1754 }
1755
1756 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1757 rates_str, network->rates_ex_len);
1758 break;
1759
1760 case MFIE_TYPE_DS_SET:
1761 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1762 info_element->data[0]);
1763 network->channel = info_element->data[0];
1764 break;
1765
1766 case MFIE_TYPE_FH_SET:
1767 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1768 break;
1769
1770 case MFIE_TYPE_CF_SET:
1771 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1772 break;
1773
1774 case MFIE_TYPE_TIM:
1775 if(info_element->len < 4)
1776 break;
1777
1778 network->tim.tim_count = info_element->data[0];
1779 network->tim.tim_period = info_element->data[1];
1780
1781 network->dtim_period = info_element->data[1];
1782 if(ieee->state != IEEE80211_LINKED)
1783 break;
1784
1785 network->last_dtim_sta_time[0] = jiffies;
1786 network->last_dtim_sta_time[1] = stats->mac_time[1];
1787
1788 network->dtim_data = IEEE80211_DTIM_VALID;
1789
1790 if(info_element->data[0] != 0)
1791 break;
1792
1793 if(info_element->data[2] & 1)
1794 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1795
1796 offset = (info_element->data[2] >> 1)*2;
1797
1798 if(ieee->assoc_id < 8*offset ||
1799 ieee->assoc_id > 8*(offset + info_element->len -3))
1800
1801 break;
1802
1803 offset = (ieee->assoc_id / 8) - offset;
1804
1805 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1806 network->dtim_data |= IEEE80211_DTIM_UCAST;
1807
1808 break;
1809
1810 case MFIE_TYPE_ERP:
1811 network->erp_value = info_element->data[0];
1812 network->flags |= NETWORK_HAS_ERP_VALUE;
1813 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1814 network->erp_value);
1815 break;
1816 case MFIE_TYPE_IBSS_SET:
1817 network->atim_window = info_element->data[0];
1818 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1819 network->atim_window);
1820 break;
1821
1822 case MFIE_TYPE_CHALLENGE:
1823 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1824 break;
1825
1826 case MFIE_TYPE_GENERIC:
1827 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1828 info_element->len);
1829 if (!ieee80211_parse_qos_info_param_IE(info_element,
1830 network))
1831 break;
1832
1833 if (info_element->len >= 4 &&
1834 info_element->data[0] == 0x00 &&
1835 info_element->data[1] == 0x50 &&
1836 info_element->data[2] == 0xf2 &&
1837 info_element->data[3] == 0x01) {
1838 network->wpa_ie_len = min(info_element->len + 2,
1839 MAX_WPA_IE_LEN);
1840 memcpy(network->wpa_ie, info_element,
1841 network->wpa_ie_len);
1842 break;
1843 }
1844
1845#ifdef THOMAS_TURBO
1846 if (info_element->len == 7 &&
1847 info_element->data[0] == 0x00 &&
1848 info_element->data[1] == 0xe0 &&
1849 info_element->data[2] == 0x4c &&
1850 info_element->data[3] == 0x01 &&
1851 info_element->data[4] == 0x02) {
1852 network->Turbo_Enable = 1;
1853 }
1854#endif
1855
1856
1857 if(tmp_htcap_len == 0){
1858 if(info_element->len >= 4 &&
1859 info_element->data[0] == 0x00 &&
1860 info_element->data[1] == 0x90 &&
1861 info_element->data[2] == 0x4c &&
1862 info_element->data[3] == 0x033){
1863
1864 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1865 if(tmp_htcap_len != 0){
1866 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1867 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1868 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1869 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1870 }
1871 }
1872 if(tmp_htcap_len != 0)
1873 network->bssht.bdSupportHT = true;
1874 else
1875 network->bssht.bdSupportHT = false;
1876 }
1877
1878
1879 if(tmp_htinfo_len == 0){
1880 if(info_element->len >= 4 &&
1881 info_element->data[0] == 0x00 &&
1882 info_element->data[1] == 0x90 &&
1883 info_element->data[2] == 0x4c &&
1884 info_element->data[3] == 0x034){
1885
1886 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1887 if(tmp_htinfo_len != 0){
1888 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1889 if(tmp_htinfo_len){
1890 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1891 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1892 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1893 }
1894
1895 }
1896
1897 }
1898 }
1899
1900 if(ieee->aggregation){
1901 if(network->bssht.bdSupportHT){
1902 if(info_element->len >= 4 &&
1903 info_element->data[0] == 0x00 &&
1904 info_element->data[1] == 0xe0 &&
1905 info_element->data[2] == 0x4c &&
1906 info_element->data[3] == 0x02){
1907
1908 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1909 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1910
1911 }
1912 if(ht_realtek_agg_len >= 5){
1913 network->bssht.bdRT2RTAggregation = true;
1914
1915 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1916 network->bssht.bdRT2RTLongSlotTime = true;
1917 }
1918 }
1919
1920 }
1921
1922 if((info_element->len >= 3 &&
1923 info_element->data[0] == 0x00 &&
1924 info_element->data[1] == 0x05 &&
1925 info_element->data[2] == 0xb5) ||
1926 (info_element->len >= 3 &&
1927 info_element->data[0] == 0x00 &&
1928 info_element->data[1] == 0x0a &&
1929 info_element->data[2] == 0xf7) ||
1930 (info_element->len >= 3 &&
1931 info_element->data[0] == 0x00 &&
1932 info_element->data[1] == 0x10 &&
1933 info_element->data[2] == 0x18)){
1934
1935 network->broadcom_cap_exist = true;
1936
1937 }
1938
1939 if(info_element->len >= 3 &&
1940 info_element->data[0] == 0x00 &&
1941 info_element->data[1] == 0x0c &&
1942 info_element->data[2] == 0x43)
1943 {
1944 network->ralink_cap_exist = true;
1945 }
1946 else
1947 network->ralink_cap_exist = false;
1948
1949 if((info_element->len >= 3 &&
1950 info_element->data[0] == 0x00 &&
1951 info_element->data[1] == 0x03 &&
1952 info_element->data[2] == 0x7f) ||
1953 (info_element->len >= 3 &&
1954 info_element->data[0] == 0x00 &&
1955 info_element->data[1] == 0x13 &&
1956 info_element->data[2] == 0x74))
1957 {
1958 network->atheros_cap_exist = true;
1959 }
1960 else
1961 network->atheros_cap_exist = false;
1962
1963 if ((info_element->len >= 3 &&
1964 info_element->data[0] == 0x00 &&
1965 info_element->data[1] == 0x50 &&
1966 info_element->data[2] == 0x43) )
1967 {
1968 network->marvell_cap_exist = true;
1969 }
1970
1971
1972 if(info_element->len >= 3 &&
1973 info_element->data[0] == 0x00 &&
1974 info_element->data[1] == 0x40 &&
1975 info_element->data[2] == 0x96)
1976 {
1977 network->cisco_cap_exist = true;
1978 }
1979 else
1980 network->cisco_cap_exist = false;
1981
1982 if(info_element->len > 4 &&
1983 info_element->data[0] == 0x00 &&
1984 info_element->data[1] == 0x40 &&
1985 info_element->data[2] == 0x96 &&
1986 info_element->data[3] == 0x01)
1987 {
1988 if(info_element->len == 6)
1989 {
1990 memcpy(network->CcxRmState, &info_element[4], 2);
1991 if(network->CcxRmState[0] != 0)
1992 {
1993 network->bCcxRmEnable = true;
1994 }
1995 else
1996 network->bCcxRmEnable = false;
1997
1998
1999
2000 network->MBssidMask = network->CcxRmState[1] & 0x07;
2001 if(network->MBssidMask != 0)
2002 {
2003 network->bMBssidValid = true;
2004 network->MBssidMask = 0xff << (network->MBssidMask);
2005 cpMacAddr(network->MBssid, network->bssid);
2006 network->MBssid[5] &= network->MBssidMask;
2007 }
2008 else
2009 {
2010 network->bMBssidValid = false;
2011 }
2012 }
2013 else
2014 {
2015 network->bCcxRmEnable = false;
2016 }
2017 }
2018 if(info_element->len > 4 &&
2019 info_element->data[0] == 0x00 &&
2020 info_element->data[1] == 0x40 &&
2021 info_element->data[2] == 0x96 &&
2022 info_element->data[3] == 0x03)
2023 {
2024 if(info_element->len == 5)
2025 {
2026 network->bWithCcxVerNum = true;
2027 network->BssCcxVerNumber = info_element->data[4];
2028 }
2029 else
2030 {
2031 network->bWithCcxVerNum = false;
2032 network->BssCcxVerNumber = 0;
2033 }
2034 }
2035 break;
2036
2037 case MFIE_TYPE_RSN:
2038 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2039 info_element->len);
2040 network->rsn_ie_len = min(info_element->len + 2,
2041 MAX_WPA_IE_LEN);
2042 memcpy(network->rsn_ie, info_element,
2043 network->rsn_ie_len);
2044 break;
2045
2046
2047 case MFIE_TYPE_HT_CAP:
2048 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2049 info_element->len);
2050 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2051 if(tmp_htcap_len != 0){
2052 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2053 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2054 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2055 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2056
2057
2058
2059
2060 network->bssht.bdSupportHT = true;
2061 }
2062 else
2063 network->bssht.bdSupportHT = false;
2064 break;
2065
2066
2067 case MFIE_TYPE_HT_INFO:
2068 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2069 info_element->len);
2070 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2071 if(tmp_htinfo_len){
2072 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2073 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2074 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2075 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2076 }
2077 break;
2078
2079 case MFIE_TYPE_AIRONET:
2080 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2081 info_element->len);
2082 if(info_element->len >IE_CISCO_FLAG_POSITION)
2083 {
2084 network->bWithAironetIE = true;
2085
2086
2087
2088
2089 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2090 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2091 {
2092 network->bCkipSupported = true;
2093 }
2094 else
2095 {
2096 network->bCkipSupported = false;
2097 }
2098 }
2099 else
2100 {
2101 network->bWithAironetIE = false;
2102 network->bCkipSupported = false;
2103 }
2104 break;
2105 case MFIE_TYPE_QOS_PARAMETER:
2106 printk(KERN_ERR
2107 "QoS Error need to parse QOS_PARAMETER IE\n");
2108 break;
2109
2110#ifdef ENABLE_DOT11D
2111 case MFIE_TYPE_COUNTRY:
2112 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2113 info_element->len);
2114 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);
2115 break;
2116#endif
2117
2118 default:
2119 IEEE80211_DEBUG_MGMT
2120 ("Unsupported info element: %s (%d)\n",
2121 get_info_element_string(info_element->id),
2122 info_element->id);
2123 break;
2124 }
2125
2126 length -= sizeof(*info_element) + info_element->len;
2127 info_element =
2128 (struct ieee80211_info_element *)&info_element->
2129 data[info_element->len];
2130 }
2131
2132 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2133 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation &&
2134 !network->marvell_cap_exist)
2135 {
2136 network->unknown_cap_exist = true;
2137 }
2138 else
2139 {
2140 network->unknown_cap_exist = false;
2141 }
2142 return 0;
2143}
2144
2145static inline u8 ieee80211_SignalStrengthTranslate(
2146 u8 CurrSS
2147 )
2148{
2149 u8 RetSS;
2150
2151
2152 if(CurrSS >= 71 && CurrSS <= 100)
2153 {
2154 RetSS = 90 + ((CurrSS - 70) / 3);
2155 }
2156 else if(CurrSS >= 41 && CurrSS <= 70)
2157 {
2158 RetSS = 78 + ((CurrSS - 40) / 3);
2159 }
2160 else if(CurrSS >= 31 && CurrSS <= 40)
2161 {
2162 RetSS = 66 + (CurrSS - 30);
2163 }
2164 else if(CurrSS >= 21 && CurrSS <= 30)
2165 {
2166 RetSS = 54 + (CurrSS - 20);
2167 }
2168 else if(CurrSS >= 5 && CurrSS <= 20)
2169 {
2170 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2171 }
2172 else if(CurrSS == 4)
2173 {
2174 RetSS = 36;
2175 }
2176 else if(CurrSS == 3)
2177 {
2178 RetSS = 27;
2179 }
2180 else if(CurrSS == 2)
2181 {
2182 RetSS = 18;
2183 }
2184 else if(CurrSS == 1)
2185 {
2186 RetSS = 9;
2187 }
2188 else
2189 {
2190 RetSS = CurrSS;
2191 }
2192
2193 return RetSS;
2194}
2195
2196long ieee80211_translate_todbm(u8 signal_strength_index )
2197{
2198 long signal_power;
2199
2200
2201 signal_power = (long)((signal_strength_index + 1) >> 1);
2202 signal_power -= 95;
2203
2204 return signal_power;
2205}
2206
2207static inline int ieee80211_network_init(
2208 struct ieee80211_device *ieee,
2209 struct ieee80211_probe_response *beacon,
2210 struct ieee80211_network *network,
2211 struct ieee80211_rx_stats *stats)
2212{
2213 network->qos_data.active = 0;
2214 network->qos_data.supported = 0;
2215 network->qos_data.param_count = 0;
2216 network->qos_data.old_param_count = 0;
2217
2218
2219 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2220 network->capability = le16_to_cpu(beacon->capability);
2221 network->last_scanned = jiffies;
2222 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2223 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2224 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2225
2226 network->listen_interval = 0x0A;
2227 network->rates_len = network->rates_ex_len = 0;
2228 network->last_associate = 0;
2229 network->ssid_len = 0;
2230 network->flags = 0;
2231 network->atim_window = 0;
2232 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2233 0x3 : 0x0;
2234 network->berp_info_valid = false;
2235 network->broadcom_cap_exist = false;
2236 network->ralink_cap_exist = false;
2237 network->atheros_cap_exist = false;
2238 network->marvell_cap_exist = false;
2239 network->cisco_cap_exist = false;
2240 network->unknown_cap_exist = false;
2241#ifdef THOMAS_TURBO
2242 network->Turbo_Enable = 0;
2243#endif
2244#ifdef ENABLE_DOT11D
2245 network->CountryIeLen = 0;
2246 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2247#endif
2248
2249 HTInitializeBssDesc(&network->bssht);
2250 if (stats->freq == IEEE80211_52GHZ_BAND) {
2251
2252 network->channel = stats->received_channel;
2253 } else
2254 network->flags |= NETWORK_HAS_CCK;
2255
2256 network->wpa_ie_len = 0;
2257 network->rsn_ie_len = 0;
2258
2259 if (ieee80211_parse_info_param
2260 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2261 return 1;
2262
2263 network->mode = 0;
2264 if (stats->freq == IEEE80211_52GHZ_BAND)
2265 network->mode = IEEE_A;
2266 else {
2267 if (network->flags & NETWORK_HAS_OFDM)
2268 network->mode |= IEEE_G;
2269 if (network->flags & NETWORK_HAS_CCK)
2270 network->mode |= IEEE_B;
2271 }
2272
2273 if (network->mode == 0) {
2274 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2275 "network.\n",
2276 escape_essid(network->ssid,
2277 network->ssid_len),
2278 network->bssid);
2279 return 1;
2280 }
2281
2282 if(network->bssht.bdSupportHT){
2283 if(network->mode == IEEE_A)
2284 network->mode = IEEE_N_5G;
2285 else if(network->mode & (IEEE_G | IEEE_B))
2286 network->mode = IEEE_N_24G;
2287 }
2288 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2289 network->flags |= NETWORK_EMPTY_ESSID;
2290
2291 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2292 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2293
2294 memcpy(&network->stats, stats, sizeof(network->stats));
2295
2296 return 0;
2297}
2298
2299static inline int is_same_network(struct ieee80211_network *src,
2300 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2301{
2302
2303
2304
2305
2306 return (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2307 (src->channel == dst->channel) &&
2308 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2309 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2310 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2311 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2312 ((src->capability & WLAN_CAPABILITY_BSS) ==
2313 (dst->capability & WLAN_CAPABILITY_BSS)));
2314}
2315
2316static inline void update_network(struct ieee80211_network *dst,
2317 struct ieee80211_network *src)
2318{
2319 int qos_active;
2320 u8 old_param;
2321
2322 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2323 dst->capability = src->capability;
2324 memcpy(dst->rates, src->rates, src->rates_len);
2325 dst->rates_len = src->rates_len;
2326 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2327 dst->rates_ex_len = src->rates_ex_len;
2328 if(src->ssid_len > 0)
2329 {
2330 memset(dst->ssid, 0, dst->ssid_len);
2331 dst->ssid_len = src->ssid_len;
2332 memcpy(dst->ssid, src->ssid, src->ssid_len);
2333 }
2334 dst->mode = src->mode;
2335 dst->flags = src->flags;
2336 dst->time_stamp[0] = src->time_stamp[0];
2337 dst->time_stamp[1] = src->time_stamp[1];
2338 if (src->flags & NETWORK_HAS_ERP_VALUE)
2339 {
2340 dst->erp_value = src->erp_value;
2341 dst->berp_info_valid = src->berp_info_valid = true;
2342 }
2343 dst->beacon_interval = src->beacon_interval;
2344 dst->listen_interval = src->listen_interval;
2345 dst->atim_window = src->atim_window;
2346 dst->dtim_period = src->dtim_period;
2347 dst->dtim_data = src->dtim_data;
2348 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2349 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2350 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2351
2352 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2353 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2354 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2355 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2356 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2357 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2358 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2359 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2360 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2361 dst->ralink_cap_exist = src->ralink_cap_exist;
2362 dst->atheros_cap_exist = src->atheros_cap_exist;
2363 dst->marvell_cap_exist = src->marvell_cap_exist;
2364 dst->cisco_cap_exist = src->cisco_cap_exist;
2365 dst->unknown_cap_exist = src->unknown_cap_exist;
2366 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2367 dst->wpa_ie_len = src->wpa_ie_len;
2368 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2369 dst->rsn_ie_len = src->rsn_ie_len;
2370
2371 dst->last_scanned = jiffies;
2372
2373 qos_active = dst->qos_data.active;
2374 old_param = dst->qos_data.param_count;
2375 if(dst->flags & NETWORK_HAS_QOS_MASK){
2376
2377 }
2378 else {
2379 dst->qos_data.supported = src->qos_data.supported;
2380 dst->qos_data.param_count = src->qos_data.param_count;
2381 }
2382
2383 if(dst->qos_data.supported == 1) {
2384 dst->QoS_Enable = 1;
2385 if(dst->ssid_len)
2386 IEEE80211_DEBUG_QOS
2387 ("QoS the network %s is QoS supported\n",
2388 dst->ssid);
2389 else
2390 IEEE80211_DEBUG_QOS
2391 ("QoS the network is QoS supported\n");
2392 }
2393 dst->qos_data.active = qos_active;
2394 dst->qos_data.old_param_count = old_param;
2395
2396
2397 dst->wmm_info = src->wmm_info;
2398 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2399 src->wmm_param[1].ac_aci_acm_aifsn|| \
2400 src->wmm_param[2].ac_aci_acm_aifsn|| \
2401 src->wmm_param[3].ac_aci_acm_aifsn) {
2402 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2403 }
2404#ifdef THOMAS_TURBO
2405 dst->Turbo_Enable = src->Turbo_Enable;
2406#endif
2407
2408#ifdef ENABLE_DOT11D
2409 dst->CountryIeLen = src->CountryIeLen;
2410 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2411#endif
2412
2413
2414 dst->bWithAironetIE = src->bWithAironetIE;
2415 dst->bCkipSupported = src->bCkipSupported;
2416 memcpy(dst->CcxRmState,src->CcxRmState,2);
2417 dst->bCcxRmEnable = src->bCcxRmEnable;
2418 dst->MBssidMask = src->MBssidMask;
2419 dst->bMBssidValid = src->bMBssidValid;
2420 memcpy(dst->MBssid,src->MBssid,6);
2421 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2422 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2423
2424}
2425
2426static inline int is_beacon(__le16 fc)
2427{
2428 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2429}
2430
2431static inline void ieee80211_process_probe_response(
2432 struct ieee80211_device *ieee,
2433 struct ieee80211_probe_response *beacon,
2434 struct ieee80211_rx_stats *stats)
2435{
2436 struct ieee80211_network network;
2437 struct ieee80211_network *target;
2438 struct ieee80211_network *oldest = NULL;
2439#ifdef CONFIG_IEEE80211_DEBUG
2440 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2441#endif
2442 unsigned long flags;
2443 short renew;
2444
2445 memset(&network, 0, sizeof(struct ieee80211_network));
2446 IEEE80211_DEBUG_SCAN(
2447 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2448 escape_essid(info_element->data, info_element->len),
2449 beacon->header.addr3,
2450 (beacon->capability & (1<<0xf)) ? '1' : '0',
2451 (beacon->capability & (1<<0xe)) ? '1' : '0',
2452 (beacon->capability & (1<<0xd)) ? '1' : '0',
2453 (beacon->capability & (1<<0xc)) ? '1' : '0',
2454 (beacon->capability & (1<<0xb)) ? '1' : '0',
2455 (beacon->capability & (1<<0xa)) ? '1' : '0',
2456 (beacon->capability & (1<<0x9)) ? '1' : '0',
2457 (beacon->capability & (1<<0x8)) ? '1' : '0',
2458 (beacon->capability & (1<<0x7)) ? '1' : '0',
2459 (beacon->capability & (1<<0x6)) ? '1' : '0',
2460 (beacon->capability & (1<<0x5)) ? '1' : '0',
2461 (beacon->capability & (1<<0x4)) ? '1' : '0',
2462 (beacon->capability & (1<<0x3)) ? '1' : '0',
2463 (beacon->capability & (1<<0x2)) ? '1' : '0',
2464 (beacon->capability & (1<<0x1)) ? '1' : '0',
2465 (beacon->capability & (1<<0x0)) ? '1' : '0');
2466
2467 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2468 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2469 escape_essid(info_element->data,
2470 info_element->len),
2471 beacon->header.addr3,
2472 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2473 IEEE80211_STYPE_PROBE_RESP ?
2474 "PROBE RESPONSE" : "BEACON");
2475 return;
2476 }
2477
2478#ifdef ENABLE_DOT11D
2479
2480
2481
2482
2483
2484
2485
2486 if( !IsLegalChannel(ieee, network.channel) )
2487 return;
2488 if(ieee->bGlobalDomain)
2489 {
2490 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2491 {
2492
2493 if(IS_COUNTRY_IE_VALID(ieee) )
2494 {
2495 if( !IsLegalChannel(ieee, network.channel) )
2496 {
2497 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2498 return;
2499 }
2500 }
2501
2502 else
2503 {
2504
2505 if(network.channel > 11)
2506 {
2507 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2508 return;
2509 }
2510 }
2511 }
2512 else
2513 {
2514
2515 if(IS_COUNTRY_IE_VALID(ieee) )
2516 {
2517 if( !IsLegalChannel(ieee, network.channel) )
2518 {
2519 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2520 return;
2521 }
2522 }
2523
2524 else
2525 {
2526
2527 if(network.channel > 14)
2528 {
2529 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2530 return;
2531 }
2532 }
2533 }
2534 }
2535#endif
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547 spin_lock_irqsave(&ieee->lock, flags);
2548
2549 if(is_same_network(&ieee->current_network, &network, ieee)) {
2550 update_network(&ieee->current_network, &network);
2551 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2552 && ieee->current_network.berp_info_valid){
2553 if(ieee->current_network.erp_value& ERP_UseProtection)
2554 ieee->current_network.buseprotection = true;
2555 else
2556 ieee->current_network.buseprotection = false;
2557 }
2558 if(is_beacon(beacon->header.frame_ctl))
2559 {
2560 if(ieee->state == IEEE80211_LINKED)
2561 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2562 }
2563 else
2564 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2565 }
2566
2567 list_for_each_entry(target, &ieee->network_list, list) {
2568 if (is_same_network(target, &network, ieee))
2569 break;
2570 if ((oldest == NULL) ||
2571 (target->last_scanned < oldest->last_scanned))
2572 oldest = target;
2573 }
2574
2575
2576
2577 if (&target->list == &ieee->network_list) {
2578 if (list_empty(&ieee->network_free_list)) {
2579
2580 list_del(&oldest->list);
2581 target = oldest;
2582 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2583 "network list.\n",
2584 escape_essid(target->ssid,
2585 target->ssid_len),
2586 target->bssid);
2587 } else {
2588
2589 target = list_entry(ieee->network_free_list.next,
2590 struct ieee80211_network, list);
2591 list_del(ieee->network_free_list.next);
2592 }
2593
2594
2595#ifdef CONFIG_IEEE80211_DEBUG
2596 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2597 escape_essid(network.ssid,
2598 network.ssid_len),
2599 network.bssid,
2600 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2601 IEEE80211_STYPE_PROBE_RESP ?
2602 "PROBE RESPONSE" : "BEACON");
2603#endif
2604 memcpy(target, &network, sizeof(*target));
2605 list_add_tail(&target->list, &ieee->network_list);
2606 } else {
2607 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2608 escape_essid(target->ssid,
2609 target->ssid_len),
2610 target->bssid,
2611 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2612 IEEE80211_STYPE_PROBE_RESP ?
2613 "PROBE RESPONSE" : "BEACON");
2614
2615
2616
2617
2618
2619 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2620
2621 if(is_beacon(beacon->header.frame_ctl) == 0)
2622 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2623 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2624 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2625 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2626 renew = 1;
2627
2628
2629 update_network(target, &network);
2630 }
2631
2632 spin_unlock_irqrestore(&ieee->lock, flags);
2633 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2634 (ieee->state == IEEE80211_LINKED)) {
2635 if(ieee->handle_beacon != NULL) {
2636 ieee->handle_beacon(ieee, beacon, &ieee->current_network);
2637 }
2638 }
2639}
2640
2641void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2642 struct ieee80211_hdr_4addr *header,
2643 struct ieee80211_rx_stats *stats)
2644{
2645 if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP &&
2646 WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON)
2647 ieee->last_rx_ps_time = jiffies;
2648
2649 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2650
2651 case IEEE80211_STYPE_BEACON:
2652 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2653 WLAN_FC_GET_STYPE(header->frame_ctl));
2654 IEEE80211_DEBUG_SCAN("Beacon\n");
2655 ieee80211_process_probe_response(
2656 ieee, (struct ieee80211_probe_response *)header, stats);
2657
2658 if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
2659 ieee->iw_mode == IW_MODE_INFRA &&
2660 ieee->state == IEEE80211_LINKED))
2661 {
2662 tasklet_schedule(&ieee->ps_task);
2663 }
2664
2665 break;
2666
2667 case IEEE80211_STYPE_PROBE_RESP:
2668 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2669 WLAN_FC_GET_STYPE(header->frame_ctl));
2670 IEEE80211_DEBUG_SCAN("Probe response\n");
2671 ieee80211_process_probe_response(
2672 ieee, (struct ieee80211_probe_response *)header, stats);
2673 break;
2674
2675 }
2676}
2677
