projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Fix common misspellings
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / rtl8192e / ieee80211 / ieee80211_rx.c
1 /*
2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
4 *
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * <jkmaline@cc.hut.fi>
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
13 * more details.
14 ******************************************************************************
15
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
18
19 A special thanks goes to Realtek for their support !
20
21 ******************************************************************************/
22
23
24 #include <linux/compiler.h>
25 #include <linux/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/version.h>
40 #include <linux/wireless.h>
41 #include <linux/etherdevice.h>
42 #include <asm/uaccess.h>
43 #include <linux/ctype.h>
44
45 #include "ieee80211.h"
46 #ifdef ENABLE_DOT11D
47 #include "dot11d.h"
48 #endif
49 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
50 struct sk_buff *skb,
51 struct ieee80211_rx_stats *rx_stats)
52 {
53 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
54 u16 fc = le16_to_cpu(hdr->frame_ctl);
55
56 skb->dev = ieee->dev;
57 skb_reset_mac_header(skb);
58
59 skb_pull(skb, ieee80211_get_hdrlen(fc));
60 skb->pkt_type = PACKET_OTHERHOST;
61 skb->protocol = __constant_htons(ETH_P_80211_RAW);
62 memset(skb->cb, 0, sizeof(skb->cb));
63 netif_rx(skb);
64 }
65
66
67 /* Called only as a tasklet (software IRQ) */
68 static struct ieee80211_frag_entry *
69 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
70 unsigned int frag, u8 tid,u8 *src, u8 *dst)
71 {
72 struct ieee80211_frag_entry *entry;
73 int i;
74
75 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
76 entry = &ieee->frag_cache[tid][i];
77 if (entry->skb != NULL &&
78 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
79 IEEE80211_DEBUG_FRAG(
80 "expiring fragment cache entry "
81 "seq=%u last_frag=%u\n",
82 entry->seq, entry->last_frag);
83 dev_kfree_skb_any(entry->skb);
84 entry->skb = NULL;
85 }
86
87 if (entry->skb != NULL && entry->seq == seq &&
88 (entry->last_frag + 1 == frag || frag == -1) &&
89 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
90 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
91 return entry;
92 }
93
94 return NULL;
95 }
96
97 /* Called only as a tasklet (software IRQ) */
98 static struct sk_buff *
99 ieee80211_frag_cache_get(struct ieee80211_device *ieee,
100 struct ieee80211_hdr_4addr *hdr)
101 {
102 struct sk_buff *skb = NULL;
103 u16 fc = le16_to_cpu(hdr->frame_ctl);
104 u16 sc = le16_to_cpu(hdr->seq_ctl);
105 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
106 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
107 struct ieee80211_frag_entry *entry;
108 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
109 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
110 u8 tid;
111
112 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
113 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
114 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
115 tid = UP2AC(tid);
116 tid ++;
117 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
118 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
119 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
120 tid = UP2AC(tid);
121 tid ++;
122 } else {
123 tid = 0;
124 }
125
126 if (frag == 0) {
127 /* Reserve enough space to fit maximum frame length */
128 skb = dev_alloc_skb(ieee->dev->mtu +
129 sizeof(struct ieee80211_hdr_4addr) +
130 8 /* LLC */ +
131 2 /* alignment */ +
132 8 /* WEP */ +
133 ETH_ALEN /* WDS */ +
134 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
135 if (skb == NULL)
136 return NULL;
137
138 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
139 ieee->frag_next_idx[tid]++;
140 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
141 ieee->frag_next_idx[tid] = 0;
142
143 if (entry->skb != NULL)
144 dev_kfree_skb_any(entry->skb);
145
146 entry->first_frag_time = jiffies;
147 entry->seq = seq;
148 entry->last_frag = frag;
149 entry->skb = skb;
150 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
151 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
152 } else {
153 /* received a fragment of a frame for which the head fragment
154 * should have already been received */
155 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
156 hdr->addr1);
157 if (entry != NULL) {
158 entry->last_frag = frag;
159 skb = entry->skb;
160 }
161 }
162
163 return skb;
164 }
165
166
167 /* Called only as a tasklet (software IRQ) */
168 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
169 struct ieee80211_hdr_4addr *hdr)
170 {
171 u16 fc = le16_to_cpu(hdr->frame_ctl);
172 u16 sc = le16_to_cpu(hdr->seq_ctl);
173 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
174 struct ieee80211_frag_entry *entry;
175 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
176 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
177 u8 tid;
178
179 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
180 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
181 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
182 tid = UP2AC(tid);
183 tid ++;
184 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
185 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
186 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
187 tid = UP2AC(tid);
188 tid ++;
189 } else {
190 tid = 0;
191 }
192
193 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
194 hdr->addr1);
195
196 if (entry == NULL) {
197 IEEE80211_DEBUG_FRAG(
198 "could not invalidate fragment cache "
199 "entry (seq=%u)\n", seq);
200 return -1;
201 }
202
203 entry->skb = NULL;
204 return 0;
205 }
206
207
208
209 /* ieee80211_rx_frame_mgtmt
210 *
211 * Responsible for handling management control frames
212 *
213 * Called by ieee80211_rx */
214 static inline int
215 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
216 struct ieee80211_rx_stats *rx_stats, u16 type,
217 u16 stype)
218 {
219 /* On the struct stats definition there is written that
220 * this is not mandatory.... but seems that the probe
221 * response parser uses it
222 */
223 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
224
225 rx_stats->len = skb->len;
226 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
227 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames
228 {
229 dev_kfree_skb_any(skb);
230 return 0;
231 }
232
233 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
234
235 dev_kfree_skb_any(skb);
236
237 return 0;
238
239 #ifdef NOT_YET
240 if (ieee->iw_mode == IW_MODE_MASTER) {
241 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
242 ieee->dev->name);
243 return 0;
244 }
245
246 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
247 if (stype == WLAN_FC_STYPE_BEACON &&
248 ieee->iw_mode == IW_MODE_MASTER) {
249 struct sk_buff *skb2;
250 /* Process beacon frames also in kernel driver to
251 * update STA(AP) table statistics */
252 skb2 = skb_clone(skb, GFP_ATOMIC);
253 if (skb2)
254 hostap_rx(skb2->dev, skb2, rx_stats);
255 }
256
257 /* send management frames to the user space daemon for
258 * processing */
259 ieee->apdevstats.rx_packets++;
260 ieee->apdevstats.rx_bytes += skb->len;
261 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
262 return 0;
263 }
264
265 if (ieee->iw_mode == IW_MODE_MASTER) {
266 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
267 printk(KERN_DEBUG "%s: unknown management frame "
268 "(type=0x%02x, stype=0x%02x) dropped\n",
269 skb->dev->name, type, stype);
270 return -1;
271 }
272
273 hostap_rx(skb->dev, skb, rx_stats);
274 return 0;
275 }
276
277 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
278 "received in non-Host AP mode\n", skb->dev->name);
279 return -1;
280 #endif
281 }
282
283
284
285 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
286 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
287 static unsigned char rfc1042_header[] =
288 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
289 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
290 static unsigned char bridge_tunnel_header[] =
291 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
292 /* No encapsulation header if EtherType < 0x600 (=length) */
293
294 /* Called by ieee80211_rx_frame_decrypt */
295 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
296 struct sk_buff *skb, size_t hdrlen)
297 {
298 struct net_device *dev = ieee->dev;
299 u16 fc, ethertype;
300 struct ieee80211_hdr_4addr *hdr;
301 u8 *pos;
302
303 if (skb->len < 24)
304 return 0;
305
306 if (ieee->hwsec_active)
307 {
308 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
309 tcb_desc->bHwSec = 1;
310
311 if(ieee->need_sw_enc)
312 tcb_desc->bHwSec = 0;
313 }
314
315 hdr = (struct ieee80211_hdr_4addr *) skb->data;
316 fc = le16_to_cpu(hdr->frame_ctl);
317
318 /* check that the frame is unicast frame to us */
319 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
320 IEEE80211_FCTL_TODS &&
321 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
322 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
323 /* ToDS frame with own addr BSSID and DA */
324 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
325 IEEE80211_FCTL_FROMDS &&
326 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
327 /* FromDS frame with own addr as DA */
328 } else
329 return 0;
330
331 if (skb->len < 24 + 8)
332 return 0;
333
334 /* check for port access entity Ethernet type */
335 pos = skb->data + hdrlen;
336 ethertype = (pos[6] << 8) | pos[7];
337 if (ethertype == ETH_P_PAE)
338 return 1;
339
340 return 0;
341 }
342
343 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
344 static inline int
345 ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
346 struct ieee80211_crypt_data *crypt)
347 {
348 struct ieee80211_hdr_4addr *hdr;
349 int res, hdrlen;
350
351 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
352 return 0;
353
354 if (ieee->hwsec_active)
355 {
356 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
357 tcb_desc->bHwSec = 1;
358 }
359
360 hdr = (struct ieee80211_hdr_4addr *) skb->data;
361 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
362
363 #ifdef CONFIG_IEEE80211_CRYPT_TKIP
364 if (ieee->tkip_countermeasures &&
365 strcmp(crypt->ops->name, "TKIP") == 0) {
366 if (net_ratelimit()) {
367 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
368 "received packet from %pM\n",
369 ieee->dev->name, hdr->addr2);
370 }
371 return -1;
372 }
373 #endif
374
375 atomic_inc(&crypt->refcnt);
376 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
377 atomic_dec(&crypt->refcnt);
378 if (res < 0) {
379 IEEE80211_DEBUG_DROP(
380 "decryption failed (SA=%pM"
381 ") res=%d\n", hdr->addr2, res);
382 if (res == -2)
383 IEEE80211_DEBUG_DROP("Decryption failed ICV "
384 "mismatch (key %d)\n",
385 skb->data[hdrlen + 3] >> 6);
386 ieee->ieee_stats.rx_discards_undecryptable++;
387 return -1;
388 }
389
390 return res;
391 }
392
393
394 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
395 static inline int
396 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
397 int keyidx, struct ieee80211_crypt_data *crypt)
398 {
399 struct ieee80211_hdr_4addr *hdr;
400 int res, hdrlen;
401
402 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
403 return 0;
404 if (ieee->hwsec_active)
405 {
406 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
407 tcb_desc->bHwSec = 1;
408
409 if(ieee->need_sw_enc)
410 tcb_desc->bHwSec = 0;
411
412 }
413
414 hdr = (struct ieee80211_hdr_4addr *) skb->data;
415 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
416
417 atomic_inc(&crypt->refcnt);
418 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
419 atomic_dec(&crypt->refcnt);
420 if (res < 0) {
421 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
422 " (SA=%pM keyidx=%d)\n",
423 ieee->dev->name, hdr->addr2, keyidx);
424 return -1;
425 }
426
427 return 0;
428 }
429
430
431 /* this function is stolen from ipw2200 driver*/
432 #define IEEE_PACKET_RETRY_TIME (5*HZ)
433 static int is_duplicate_packet(struct ieee80211_device *ieee,
434 struct ieee80211_hdr_4addr *header)
435 {
436 u16 fc = le16_to_cpu(header->frame_ctl);
437 u16 sc = le16_to_cpu(header->seq_ctl);
438 u16 seq = WLAN_GET_SEQ_SEQ(sc);
439 u16 frag = WLAN_GET_SEQ_FRAG(sc);
440 u16 *last_seq, *last_frag;
441 unsigned long *last_time;
442 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
443 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
444 u8 tid;
445
446
447 //TO2DS and QoS
448 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
449 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
450 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
451 tid = UP2AC(tid);
452 tid ++;
453 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
454 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
455 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
456 tid = UP2AC(tid);
457 tid ++;
458 } else { // no QoS
459 tid = 0;
460 }
461
462 switch (ieee->iw_mode) {
463 case IW_MODE_ADHOC:
464 {
465 struct list_head *p;
466 struct ieee_ibss_seq *entry = NULL;
467 u8 *mac = header->addr2;
468 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
469
470 list_for_each(p, &ieee->ibss_mac_hash[index]) {
471 entry = list_entry(p, struct ieee_ibss_seq, list);
472 if (!memcmp(entry->mac, mac, ETH_ALEN))
473 break;
474 }
475
476 if (p == &ieee->ibss_mac_hash[index]) {
477 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
478 if (!entry) {
479 printk(KERN_WARNING "Cannot malloc new mac entry\n");
480 return 0;
481 }
482 memcpy(entry->mac, mac, ETH_ALEN);
483 entry->seq_num[tid] = seq;
484 entry->frag_num[tid] = frag;
485 entry->packet_time[tid] = jiffies;
486 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
487 return 0;
488 }
489 last_seq = &entry->seq_num[tid];
490 last_frag = &entry->frag_num[tid];
491 last_time = &entry->packet_time[tid];
492 break;
493 }
494
495 case IW_MODE_INFRA:
496 last_seq = &ieee->last_rxseq_num[tid];
497 last_frag = &ieee->last_rxfrag_num[tid];
498 last_time = &ieee->last_packet_time[tid];
499
500 break;
501 default:
502 return 0;
503 }
504
505 if ((*last_seq == seq) &&
506 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
507 if (*last_frag == frag){
508 goto drop;
509
510 }
511 if (*last_frag + 1 != frag)
512 /* out-of-order fragment */
513 goto drop;
514 } else
515 *last_seq = seq;
516
517 *last_frag = frag;
518 *last_time = jiffies;
519 return 0;
520
521 drop:
522 return 1;
523 }
524 bool
525 AddReorderEntry(
526 PRX_TS_RECORD pTS,
527 PRX_REORDER_ENTRY pReorderEntry
528 )
529 {
530 struct list_head *pList = &pTS->RxPendingPktList;
531
532 while(pList->next != &pTS->RxPendingPktList)
533 {
534 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
535 {
536 pList = pList->next;
537 }
538 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
539 {
540 return false;
541 }
542 else
543 {
544 break;
545 }
546 }
547
548 pReorderEntry->List.next = pList->next;
549 pReorderEntry->List.next->prev = &pReorderEntry->List;
550 pReorderEntry->List.prev = pList;
551 pList->next = &pReorderEntry->List;
552
553 return true;
554 }
555
556 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
557 {
558 u8 i = 0 , j=0;
559 u16 ethertype;
560
561 for(j = 0; j<index; j++)
562 {
563 //added by amy for reorder
564 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
565 for(i = 0; i<prxb->nr_subframes; i++) {
566 struct sk_buff *sub_skb = prxb->subframes[i];
567
568 /* convert hdr + possible LLC headers into Ethernet header */
569 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
570 if (sub_skb->len >= 8 &&
571 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
572 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
573 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
574 /* remove RFC1042 or Bridge-Tunnel encapsulation and
575 * replace EtherType */
576 skb_pull(sub_skb, SNAP_SIZE);
577 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
578 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
579 } else {
580 u16 len;
581 /* Leave Ethernet header part of hdr and full payload */
582 len = htons(sub_skb->len);
583 memcpy(skb_push(sub_skb, 2), &len, 2);
584 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
585 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
586 }
587
588 /* Indicat the packets to upper layer */
589 if (sub_skb) {
590 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
591 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
592 sub_skb->dev = ieee->dev;
593 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
594 ieee->last_rx_ps_time = jiffies;
595 netif_rx(sub_skb);
596 }
597 }
598 kfree(prxb);
599 prxb = NULL;
600 }
601 }
602
603
604 void RxReorderIndicatePacket( struct ieee80211_device *ieee,
605 struct ieee80211_rxb* prxb,
606 PRX_TS_RECORD pTS,
607 u16 SeqNum)
608 {
609 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
610 PRX_REORDER_ENTRY pReorderEntry = NULL;
611 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
612 u8 WinSize = pHTInfo->RxReorderWinSize;
613 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
614 u8 index = 0;
615 bool bMatchWinStart = false, bPktInBuf = false;
616 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
617
618 /* Rx Reorder initialize condition.*/
619 if(pTS->RxIndicateSeq == 0xffff) {
620 pTS->RxIndicateSeq = SeqNum;
621 }
622
623 /* Drop out the packet which SeqNum is smaller than WinStart */
624 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
625 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
626 pTS->RxIndicateSeq, SeqNum);
627 pHTInfo->RxReorderDropCounter++;
628 {
629 int i;
630 for(i =0; i < prxb->nr_subframes; i++) {
631 dev_kfree_skb(prxb->subframes[i]);
632 }
633 kfree(prxb);
634 prxb = NULL;
635 }
636 return;
637 }
638
639 /*
640 * Sliding window manipulation. Conditions includes:
641 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
642 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
643 */
644 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
645 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
646 bMatchWinStart = true;
647 } else if(SN_LESS(WinEnd, SeqNum)) {
648 if(SeqNum >= (WinSize - 1)) {
649 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
650 } else {
651 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
652 }
653 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
654 }
655
656 /*
657 * Indication process.
658 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
659 * with the SeqNum smaller than latest WinStart and buffer other packets.
660 */
661 /* For Rx Reorder condition:
662 * 1. All packets with SeqNum smaller than WinStart => Indicate
663 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
664 */
665 if(bMatchWinStart) {
666 /* Current packet is going to be indicated.*/
667 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
668 pTS->RxIndicateSeq, SeqNum);
669 prxbIndicateArray[0] = prxb;
670 index = 1;
671 } else {
672 /* Current packet is going to be inserted into pending list.*/
673 if(!list_empty(&ieee->RxReorder_Unused_List)) {
674 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
675 list_del_init(&pReorderEntry->List);
676
677 /* Make a reorder entry and insert into a the packet list.*/
678 pReorderEntry->SeqNum = SeqNum;
679 pReorderEntry->prxb = prxb;
680
681 if(!AddReorderEntry(pTS, pReorderEntry)) {
682 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
683 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
684 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
685 {
686 int i;
687 for(i =0; i < prxb->nr_subframes; i++) {
688 dev_kfree_skb(prxb->subframes[i]);
689 }
690 kfree(prxb);
691 prxb = NULL;
692 }
693 } else {
694 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
695 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
696 }
697 }
698 else {
699 /*
700 * Packets are dropped if there is not enough reorder entries.
701 * This part shall be modified!! We can just indicate all the
702 * packets in buffer and get reorder entries.
703 */
704 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
705 {
706 int i;
707 for(i =0; i < prxb->nr_subframes; i++) {
708 dev_kfree_skb(prxb->subframes[i]);
709 }
710 kfree(prxb);
711 prxb = NULL;
712 }
713 }
714 }
715
716 /* Check if there is any packet need indicate.*/
717 while(!list_empty(&pTS->RxPendingPktList)) {
718 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
719 #if 1
720 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
721 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
722 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
723 {
724 /* This protect buffer from overflow. */
725 if(index >= REORDER_WIN_SIZE) {
726 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
727 bPktInBuf = true;
728 break;
729 }
730
731 list_del_init(&pReorderEntry->List);
732
733 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
734 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
735
736 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
737 prxbIndicateArray[index] = pReorderEntry->prxb;
738 index++;
739
740 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
741 } else {
742 bPktInBuf = true;
743 break;
744 }
745 #endif
746 }
747
748 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
749 if(index>0) {
750 // Cancel previous pending timer.
751 if (timer_pending(&pTS->RxPktPendingTimer))
752 del_timer_sync(&pTS->RxPktPendingTimer);
753 pTS->RxTimeoutIndicateSeq = 0xffff;
754
755 // Indicate packets
756 if(index>REORDER_WIN_SIZE){
757 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
758 return;
759 }
760 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
761 bPktInBuf = false;
762 }
763
764 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
765 // Set new pending timer.
766 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
767 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
768
769 mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime));
770 }
771 }
772
773 u8 parse_subframe(struct ieee80211_device* ieee,struct sk_buff *skb,
774 struct ieee80211_rx_stats *rx_stats,
775 struct ieee80211_rxb *rxb,u8* src,u8* dst)
776 {
777 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
778 u16 fc = le16_to_cpu(hdr->frame_ctl);
779
780 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
781 u16 ChkLength;
782 bool bIsAggregateFrame = false;
783 u16 nSubframe_Length;
784 u8 nPadding_Length = 0;
785 u16 SeqNum=0;
786
787 struct sk_buff *sub_skb;
788 u8 *data_ptr;
789 /* just for debug purpose */
790 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
791
792 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
793 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
794 bIsAggregateFrame = true;
795 }
796
797 if(IEEE80211_QOS_HAS_SEQ(fc)) {
798 LLCOffset += 2;
799 }
800
801 if(rx_stats->bContainHTC) {
802 LLCOffset += sHTCLng;
803 }
804 // Null packet, don't indicate it to upper layer
805 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
806
807 if( skb->len <= ChkLength ) {
808 return 0;
809 }
810
811 skb_pull(skb, LLCOffset);
812 ieee->bIsAggregateFrame = bIsAggregateFrame;//added by amy for Leisure PS
813
814 if(!bIsAggregateFrame) {
815 rxb->nr_subframes = 1;
816 #ifdef JOHN_NOCPY
817 rxb->subframes[0] = skb;
818 #else
819 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
820 #endif
821
822 memcpy(rxb->src,src,ETH_ALEN);
823 memcpy(rxb->dst,dst,ETH_ALEN);
824 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
825 return 1;
826 } else {
827 rxb->nr_subframes = 0;
828 memcpy(rxb->src,src,ETH_ALEN);
829 memcpy(rxb->dst,dst,ETH_ALEN);
830 while(skb->len > ETHERNET_HEADER_SIZE) {
831 /* Offset 12 denote 2 mac address */
832 nSubframe_Length = *((u16*)(skb->data + 12));
833 //==m==>change the length order
834 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
835
836 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
837 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
838 __FUNCTION__,rxb->nr_subframes);
839 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
840 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
841 printk("The Packet SeqNum is %d\n",SeqNum);
842 return 0;
843 }
844
845 /* move the data point to data content */
846 skb_pull(skb, ETHERNET_HEADER_SIZE);
847
848 #ifdef JOHN_NOCPY
849 sub_skb = skb_clone(skb, GFP_ATOMIC);
850 sub_skb->len = nSubframe_Length;
851 sub_skb->tail = sub_skb->data + nSubframe_Length;
852 #else
853 /* Allocate new skb for releasing to upper layer */
854 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
855 skb_reserve(sub_skb, 12);
856 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
857 memcpy(data_ptr,skb->data,nSubframe_Length);
858 #endif
859 rxb->subframes[rxb->nr_subframes++] = sub_skb;
860 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
861 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
862 break;
863 }
864 skb_pull(skb,nSubframe_Length);
865
866 if(skb->len != 0) {
867 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
868 if(nPadding_Length == 4) {
869 nPadding_Length = 0;
870 }
871
872 if(skb->len < nPadding_Length) {
873 return 0;
874 }
875
876 skb_pull(skb,nPadding_Length);
877 }
878 }
879 #ifdef JOHN_NOCPY
880 dev_kfree_skb(skb);
881 #endif
882 return rxb->nr_subframes;
883 }
884 }
885
886 /* All received frames are sent to this function. @skb contains the frame in
887 * IEEE 802.11 format, i.e., in the format it was sent over air.
888 * This function is called only as a tasklet (software IRQ). */
889 int ieee80211_rtl_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 ieee80211_hdr_4addr *hdr;
894
895 size_t hdrlen;
896 u16 fc, type, stype, sc;
897 struct net_device_stats *stats;
898 unsigned int frag;
899 u8 *payload;
900 u16 ethertype;
901 //added by amy for reorder
902 u8 TID = 0;
903 u16 SeqNum = 0;
904 PRX_TS_RECORD pTS = NULL;
905 bool unicast_packet = false;
906 //added by amy for reorder
907 #ifdef NOT_YET
908 struct net_device *wds = NULL;
909 struct sk_buff *skb2 = NULL;
910 struct net_device *wds = NULL;
911 int frame_authorized = 0;
912 int from_assoc_ap = 0;
913 void *sta = NULL;
914 #endif
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 // cheat the the hdr type
924 hdr = (struct ieee80211_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 = 1;
947 }
948
949 #ifdef NOT_YET
950 #if WIRELESS_EXT > 15
951 /* Put this code here so that we avoid duplicating it in all
952 * Rx paths. - Jean II */
953 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
954 /* If spy monitoring on */
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; /* No qual value */
960 /* Update spy records */
961 wireless_spy_update(dev, hdr->addr2, &wstats);
962 }
963 #endif /* IW_WIRELESS_SPY */
964 #endif /* WIRELESS_EXT > 15 */
965 hostap_update_rx_stats(local->ap, hdr, rx_stats);
966 #endif
967
968 #if WIRELESS_EXT > 15
969 if (ieee->iw_mode == IW_MODE_MONITOR) {
970 ieee80211_monitor_rx(ieee, skb, rx_stats);
971 stats->rx_packets++;
972 stats->rx_bytes += skb->len;
973 return 1;
974 }
975 #endif
976 if (ieee->host_decrypt) {
977 int idx = 0;
978 if (skb->len >= hdrlen + 3)
979 idx = skb->data[hdrlen + 3] >> 6;
980 crypt = ieee->crypt[idx];
981 #ifdef NOT_YET
982 sta = NULL;
983
984 /* Use station specific key to override default keys if the
985 * receiver address is a unicast address ("individual RA"). If
986 * bcrx_sta_key parameter is set, station specific key is used
987 * even with broad/multicast targets (this is against IEEE
988 * 802.11, but makes it easier to use different keys with
989 * stations that do not support WEP key mapping). */
990
991 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
992 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
993 &sta);
994 #endif
995
996 /* allow NULL decrypt to indicate an station specific override
997 * for default encryption */
998 if (crypt && (crypt->ops == NULL ||
999 crypt->ops->decrypt_mpdu == NULL))
1000 crypt = NULL;
1001
1002 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1003 /* This seems to be triggered by some (multicast?)
1004 * frames from other than current BSS, so just drop the
1005 * frames silently instead of filling system log with
1006 * these reports. */
1007 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1008 " (SA=%pM)\n",
1009 hdr->addr2);
1010 ieee->ieee_stats.rx_discards_undecryptable++;
1011 goto rx_dropped;
1012 }
1013 }
1014
1015 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1016 goto rx_dropped;
1017
1018 // if QoS enabled, should check the sequence for each of the AC
1019 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
1020 if (is_duplicate_packet(ieee, hdr))
1021 goto rx_dropped;
1022
1023 }
1024 else
1025 {
1026 PRX_TS_RECORD pRxTS = NULL;
1027
1028 if(GetTs(
1029 ieee,
1030 (PTS_COMMON_INFO*) &pRxTS,
1031 hdr->addr2,
1032 (u8)Frame_QoSTID((u8*)(skb->data)),
1033 RX_DIR,
1034 true))
1035 {
1036
1037 if( (fc & (1<<11)) &&
1038 (frag == pRxTS->RxLastFragNum) &&
1039 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
1040 {
1041 goto rx_dropped;
1042 }
1043 else
1044 {
1045 pRxTS->RxLastFragNum = frag;
1046 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1047 }
1048 }
1049 else
1050 {
1051 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
1052 goto rx_dropped;
1053 }
1054 }
1055
1056 if (type == IEEE80211_FTYPE_MGMT) {
1057
1058 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1059 goto rx_dropped;
1060 else
1061 goto rx_exit;
1062 }
1063
1064 /* Data frame - extract src/dst addresses */
1065 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1066 case IEEE80211_FCTL_FROMDS:
1067 memcpy(dst, hdr->addr1, ETH_ALEN);
1068 memcpy(src, hdr->addr3, ETH_ALEN);
1069 memcpy(bssid, hdr->addr2, ETH_ALEN);
1070 break;
1071 case IEEE80211_FCTL_TODS:
1072 memcpy(dst, hdr->addr3, ETH_ALEN);
1073 memcpy(src, hdr->addr2, ETH_ALEN);
1074 memcpy(bssid, hdr->addr1, ETH_ALEN);
1075 break;
1076 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1077 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1078 goto rx_dropped;
1079 memcpy(dst, hdr->addr3, ETH_ALEN);
1080 memcpy(src, hdr->addr4, ETH_ALEN);
1081 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1082 break;
1083 case 0:
1084 memcpy(dst, hdr->addr1, ETH_ALEN);
1085 memcpy(src, hdr->addr2, ETH_ALEN);
1086 memcpy(bssid, hdr->addr3, ETH_ALEN);
1087 break;
1088 }
1089
1090 #ifdef NOT_YET
1091 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1092 goto rx_dropped;
1093 if (wds) {
1094 skb->dev = dev = wds;
1095 stats = hostap_get_stats(dev);
1096 }
1097
1098 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1099 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1100 ieee->stadev &&
1101 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1102 /* Frame from BSSID of the AP for which we are a client */
1103 skb->dev = dev = ieee->stadev;
1104 stats = hostap_get_stats(dev);
1105 from_assoc_ap = 1;
1106 }
1107 #endif
1108
1109 dev->last_rx = jiffies;
1110
1111 #ifdef NOT_YET
1112 if ((ieee->iw_mode == IW_MODE_MASTER ||
1113 ieee->iw_mode == IW_MODE_REPEAT) &&
1114 !from_assoc_ap) {
1115 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1116 wds != NULL)) {
1117 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1118 frame_authorized = 0;
1119 break;
1120 case AP_RX_CONTINUE:
1121 frame_authorized = 1;
1122 break;
1123 case AP_RX_DROP:
1124 goto rx_dropped;
1125 case AP_RX_EXIT:
1126 goto rx_exit;
1127 }
1128 }
1129 #endif
1130 /* Nullfunc frames may have PS-bit set, so they must be passed to
1131 * hostap_handle_sta_rx() before being dropped here. */
1132 if (stype != IEEE80211_STYPE_DATA &&
1133 stype != IEEE80211_STYPE_DATA_CFACK &&
1134 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1135 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1136 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1137 ) {
1138 if (stype != IEEE80211_STYPE_NULLFUNC)
1139 IEEE80211_DEBUG_DROP(
1140 "RX: dropped data frame "
1141 "with no data (type=0x%02x, "
1142 "subtype=0x%02x, len=%d)\n",
1143 type, stype, skb->len);
1144 goto rx_dropped;
1145 }
1146 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1147 goto rx_dropped;
1148
1149 #ifdef ENABLE_LPS
1150 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == 1)
1151 && (ieee->polling)) {
1152 if (WLAN_FC_MORE_DATA(fc)) {
1153 /* more data bit is set, let's request a new frame from the AP */
1154 ieee80211_sta_ps_send_pspoll_frame(ieee);
1155 } else {
1156 ieee->polling = false;
1157 }
1158 }
1159 #endif
1160
1161 ieee->need_sw_enc = 0;
1162
1163 if((!rx_stats->Decrypted)){
1164 ieee->need_sw_enc = 1;
1165 }
1166
1167 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1168
1169 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1170 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1171 {
1172 printk("decrypt frame error\n");
1173 goto rx_dropped;
1174 }
1175
1176
1177 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1178
1179 /* skb: hdr + (possibly fragmented) plaintext payload */
1180 // PR: FIXME: hostap has additional conditions in the "if" below:
1181 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1182 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1183 int flen;
1184 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1185 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1186
1187 if (!frag_skb) {
1188 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1189 "Rx cannot get skb from fragment "
1190 "cache (morefrag=%d seq=%u frag=%u)\n",
1191 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1192 WLAN_GET_SEQ_SEQ(sc), frag);
1193 goto rx_dropped;
1194 }
1195 flen = skb->len;
1196 if (frag != 0)
1197 flen -= hdrlen;
1198
1199 if (frag_skb->tail + flen > frag_skb->end) {
1200 printk(KERN_WARNING "%s: host decrypted and "
1201 "reassembled frame did not fit skb\n",
1202 dev->name);
1203 ieee80211_frag_cache_invalidate(ieee, hdr);
1204 goto rx_dropped;
1205 }
1206
1207 if (frag == 0) {
1208 /* copy first fragment (including full headers) into
1209 * beginning of the fragment cache skb */
1210 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1211 } else {
1212 /* append frame payload to the end of the fragment
1213 * cache skb */
1214 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1215 flen);
1216 }
1217 dev_kfree_skb_any(skb);
1218 skb = NULL;
1219
1220 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1221 /* more fragments expected - leave the skb in fragment
1222 * cache for now; it will be delivered to upper layers
1223 * after all fragments have been received */
1224 goto rx_exit;
1225 }
1226
1227 /* this was the last fragment and the frame will be
1228 * delivered, so remove skb from fragment cache */
1229 skb = frag_skb;
1230 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1231 ieee80211_frag_cache_invalidate(ieee, hdr);
1232 }
1233
1234 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1235 * encrypted/authenticated */
1236 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1237 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1238 {
1239 printk("==>decrypt msdu error\n");
1240 goto rx_dropped;
1241 }
1242
1243 //added by amy for AP roaming
1244 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1245 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1246
1247 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1248 if((!is_multicast_ether_addr(hdr->addr1)) && (!is_broadcast_ether_addr(hdr->addr1)))
1249 unicast_packet = true;
1250
1251 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1252 if (/*ieee->ieee802_1x &&*/
1253 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1254
1255 #ifdef CONFIG_IEEE80211_DEBUG
1256 /* pass unencrypted EAPOL frames even if encryption is
1257 * configured */
1258 struct eapol *eap = (struct eapol *)(skb->data +
1259 24);
1260 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1261 eap_get_type(eap->type));
1262 #endif
1263 } else {
1264 IEEE80211_DEBUG_DROP(
1265 "encryption configured, but RX "
1266 "frame not encrypted (SA=%pM)\n",
1267 hdr->addr2);
1268 goto rx_dropped;
1269 }
1270 }
1271
1272 #ifdef CONFIG_IEEE80211_DEBUG
1273 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1274 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1275 struct eapol *eap = (struct eapol *)(skb->data +
1276 24);
1277 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1278 eap_get_type(eap->type));
1279 }
1280 #endif
1281
1282 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1283 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1284 IEEE80211_DEBUG_DROP(
1285 "dropped unencrypted RX data "
1286 "frame from %pM"
1287 " (drop_unencrypted=1)\n",
1288 hdr->addr2);
1289 goto rx_dropped;
1290 }
1291 //added by amy for reorder
1292 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1293 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1294 {
1295 TID = Frame_QoSTID(skb->data);
1296 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1297 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1298 if(TID !=0 && TID !=3)
1299 {
1300 ieee->bis_any_nonbepkts = true;
1301 }
1302 }
1303
1304 //added by amy for reorder
1305 /* skb: hdr + (possible reassembled) full plaintext payload */
1306 payload = skb->data + hdrlen;
1307
1308 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1309 if(rxb == NULL)
1310 {
1311 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1312 goto rx_dropped;
1313 }
1314 /* to parse amsdu packets */
1315 /* qos data packets & reserved bit is 1 */
1316 if(parse_subframe(ieee, skb,rx_stats,rxb,src,dst) == 0) {
1317 /* only to free rxb, and not submit the packets to upper layer */
1318 for(i =0; i < rxb->nr_subframes; i++) {
1319 dev_kfree_skb(rxb->subframes[i]);
1320 }
1321 kfree(rxb);
1322 rxb = NULL;
1323 goto rx_dropped;
1324 }
1325
1326 #ifdef ENABLE_LPS
1327 if(unicast_packet)
1328 {
1329 if (type == IEEE80211_FTYPE_DATA)
1330 {
1331
1332 if(ieee->bIsAggregateFrame)
1333 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod+=rxb->nr_subframes;
1334 else
1335 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod++;
1336
1337 // 2009.03.03 Leave DC mode immediately when detect high traffic
1338 if((ieee->state == IEEE80211_LINKED) /*&& !MgntInitAdapterInProgress(pMgntInfo)*/)
1339 {
1340 if( ((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +ieee->LinkDetectInfo.NumTxOkInPeriod) > 8 ) ||
1341 (ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2) )
1342 {
1343 if(ieee->LeisurePSLeave)
1344 ieee->LeisurePSLeave(ieee);
1345 }
1346 }
1347 }
1348 }
1349 #endif
1350
1351 ieee->last_rx_ps_time = jiffies;
1352 //added by amy for reorder
1353 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1354 //added by amy for reorder
1355 for(i = 0; i<rxb->nr_subframes; i++) {
1356 struct sk_buff *sub_skb = rxb->subframes[i];
1357
1358 if (sub_skb) {
1359 /* convert hdr + possible LLC headers into Ethernet header */
1360 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1361 if (sub_skb->len >= 8 &&
1362 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1363 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1364 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1365 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1366 * replace EtherType */
1367 skb_pull(sub_skb, SNAP_SIZE);
1368 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1369 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1370 } else {
1371 u16 len;
1372 /* Leave Ethernet header part of hdr and full payload */
1373 len = htons(sub_skb->len);
1374 memcpy(skb_push(sub_skb, 2), &len, 2);
1375 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1376 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1377 }
1378
1379 stats->rx_packets++;
1380 stats->rx_bytes += sub_skb->len;
1381 if(is_multicast_ether_addr(dst)) {
1382 stats->multicast++;
1383 }
1384
1385 /* Indicat the packets to upper layer */
1386 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1387 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1388 sub_skb->dev = dev;
1389 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1390 netif_rx(sub_skb);
1391 }
1392 }
1393 kfree(rxb);
1394 rxb = NULL;
1395
1396 }
1397 else
1398 {
1399 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1400 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1401 }
1402 #ifndef JOHN_NOCPY
1403 dev_kfree_skb(skb);
1404 #endif
1405
1406 rx_exit:
1407 #ifdef NOT_YET
1408 if (sta)
1409 hostap_handle_sta_release(sta);
1410 #endif
1411 return 1;
1412
1413 rx_dropped:
1414 kfree(rxb);
1415 rxb = NULL;
1416 stats->rx_dropped++;
1417
1418 /* Returning 0 indicates to caller that we have not handled the SKB--
1419 * so it is still allocated and can be used again by underlying
1420 * hardware as a DMA target */
1421 return 0;
1422 }
1423
1424 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1425
1426 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1427
1428 /*
1429 * Make the structure we read from the beacon packet to have
1430 * the right values
1431 */
1432 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1433 *info_element, int sub_type)
1434 {
1435
1436 if (info_element->qui_subtype != sub_type)
1437 return -1;
1438 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1439 return -1;
1440 if (info_element->qui_type != QOS_OUI_TYPE)
1441 return -1;
1442 if (info_element->version != QOS_VERSION_1)
1443 return -1;
1444
1445 return 0;
1446 }
1447
1448
1449 /*
1450 * Parse a QoS parameter element
1451 */
1452 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1453 *element_param, struct ieee80211_info_element
1454 *info_element)
1455 {
1456 int ret = 0;
1457 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1458
1459 if ((info_element == NULL) || (element_param == NULL))
1460 return -1;
1461
1462 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1463 memcpy(element_param->info_element.qui, info_element->data,
1464 info_element->len);
1465 element_param->info_element.elementID = info_element->id;
1466 element_param->info_element.length = info_element->len;
1467 } else
1468 ret = -1;
1469 if (ret == 0)
1470 ret = ieee80211_verify_qos_info(&element_param->info_element,
1471 QOS_OUI_PARAM_SUB_TYPE);
1472 return ret;
1473 }
1474
1475 /*
1476 * Parse a QoS information element
1477 */
1478 static int ieee80211_read_qos_info_element(struct
1479 ieee80211_qos_information_element
1480 *element_info, struct ieee80211_info_element
1481 *info_element)
1482 {
1483 int ret = 0;
1484 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1485
1486 if (element_info == NULL)
1487 return -1;
1488 if (info_element == NULL)
1489 return -1;
1490
1491 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1492 memcpy(element_info->qui, info_element->data,
1493 info_element->len);
1494 element_info->elementID = info_element->id;
1495 element_info->length = info_element->len;
1496 } else
1497 ret = -1;
1498
1499 if (ret == 0)
1500 ret = ieee80211_verify_qos_info(element_info,
1501 QOS_OUI_INFO_SUB_TYPE);
1502 return ret;
1503 }
1504
1505
1506 /*
1507 * Write QoS parameters from the ac parameters.
1508 */
1509 static int ieee80211_qos_convert_ac_to_parameters(struct
1510 ieee80211_qos_parameter_info
1511 *param_elm, struct
1512 ieee80211_qos_parameters
1513 *qos_param)
1514 {
1515 int rc = 0;
1516 int i;
1517 struct ieee80211_qos_ac_parameter *ac_params;
1518 u8 aci;
1519
1520 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1521 ac_params = &(param_elm->ac_params_record[i]);
1522
1523 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1524
1525 if(aci >= QOS_QUEUE_NUM)
1526 continue;
1527 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1528
1529 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1530 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1531
1532 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1533
1534 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1535
1536 qos_param->flag[aci] =
1537 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1538 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1539 }
1540 return rc;
1541 }
1542
1543 /*
1544 * we have a generic data element which it may contain QoS information or
1545 * parameters element. check the information element length to decide
1546 * which type to read
1547 */
1548 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1549 *info_element,
1550 struct ieee80211_network *network)
1551 {
1552 int rc = 0;
1553 struct ieee80211_qos_parameters *qos_param = NULL;
1554 struct ieee80211_qos_information_element qos_info_element;
1555
1556 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1557
1558 if (rc == 0) {
1559 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1560 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1561 } else {
1562 struct ieee80211_qos_parameter_info param_element;
1563
1564 rc = ieee80211_read_qos_param_element(&param_element,
1565 info_element);
1566 if (rc == 0) {
1567 qos_param = &(network->qos_data.parameters);
1568 ieee80211_qos_convert_ac_to_parameters(&param_element,
1569 qos_param);
1570 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1571 network->qos_data.param_count =
1572 param_element.info_element.ac_info & 0x0F;
1573 }
1574 }
1575
1576 if (rc == 0) {
1577 IEEE80211_DEBUG_QOS("QoS is supported\n");
1578 network->qos_data.supported = 1;
1579 }
1580 return rc;
1581 }
1582
1583 #ifdef CONFIG_IEEE80211_DEBUG
1584 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1585
1586 static const char *get_info_element_string(u16 id)
1587 {
1588 switch (id) {
1589 MFIE_STRING(SSID);
1590 MFIE_STRING(RATES);
1591 MFIE_STRING(FH_SET);
1592 MFIE_STRING(DS_SET);
1593 MFIE_STRING(CF_SET);
1594 MFIE_STRING(TIM);
1595 MFIE_STRING(IBSS_SET);
1596 MFIE_STRING(COUNTRY);
1597 MFIE_STRING(HOP_PARAMS);
1598 MFIE_STRING(HOP_TABLE);
1599 MFIE_STRING(REQUEST);
1600 MFIE_STRING(CHALLENGE);
1601 MFIE_STRING(POWER_CONSTRAINT);
1602 MFIE_STRING(POWER_CAPABILITY);
1603 MFIE_STRING(TPC_REQUEST);
1604 MFIE_STRING(TPC_REPORT);
1605 MFIE_STRING(SUPP_CHANNELS);
1606 MFIE_STRING(CSA);
1607 MFIE_STRING(MEASURE_REQUEST);
1608 MFIE_STRING(MEASURE_REPORT);
1609 MFIE_STRING(QUIET);
1610 MFIE_STRING(IBSS_DFS);
1611 // MFIE_STRING(ERP_INFO);
1612 MFIE_STRING(RSN);
1613 MFIE_STRING(RATES_EX);
1614 MFIE_STRING(GENERIC);
1615 MFIE_STRING(QOS_PARAMETER);
1616 default:
1617 return "UNKNOWN";
1618 }
1619 }
1620 #endif
1621
1622 #ifdef ENABLE_DOT11D
1623 static inline void ieee80211_extract_country_ie(
1624 struct ieee80211_device *ieee,
1625 struct ieee80211_info_element *info_element,
1626 struct ieee80211_network *network,
1627 u8 * addr2
1628 )
1629 {
1630 if(IS_DOT11D_ENABLE(ieee))
1631 {
1632 if(info_element->len!= 0)
1633 {
1634 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1635 network->CountryIeLen = info_element->len;
1636
1637 if(!IS_COUNTRY_IE_VALID(ieee))
1638 {
1639 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1640 }
1641 }
1642
1643 //
1644 // 070305, rcnjko: I update country IE watch dog here because
1645 // some AP (e.g. Cisco 1242) don't include country IE in their
1646 // probe response frame.
1647 //
1648 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1649 {
1650 UPDATE_CIE_WATCHDOG(ieee);
1651 }
1652 }
1653
1654 }
1655 #endif
1656
1657 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1658 struct ieee80211_info_element *info_element,
1659 u16 length,
1660 struct ieee80211_network *network,
1661 struct ieee80211_rx_stats *stats)
1662 {
1663 u8 i;
1664 short offset;
1665 u16 tmp_htcap_len=0;
1666 u16 tmp_htinfo_len=0;
1667 u16 ht_realtek_agg_len=0;
1668 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1669 #ifdef CONFIG_IEEE80211_DEBUG
1670 char rates_str[64];
1671 char *p;
1672 #endif
1673
1674 while (length >= sizeof(*info_element)) {
1675 if (sizeof(*info_element) + info_element->len > length) {
1676 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1677 "info_element->len + 2 > left : "
1678 "info_element->len+2=%zd left=%d, id=%d.\n",
1679 info_element->len +
1680 sizeof(*info_element),
1681 length, info_element->id);
1682 /* We stop processing but don't return an error here
1683 * because some misbehaviour APs break this rule. ie.
1684 * Orinoco AP1000. */
1685 break;
1686 }
1687
1688 switch (info_element->id) {
1689 case MFIE_TYPE_SSID:
1690 if (ieee80211_is_empty_essid(info_element->data,
1691 info_element->len)) {
1692 network->flags |= NETWORK_EMPTY_ESSID;
1693 break;
1694 }
1695
1696 network->ssid_len = min(info_element->len,
1697 (u8) IW_ESSID_MAX_SIZE);
1698 memcpy(network->ssid, info_element->data, network->ssid_len);
1699 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1700 memset(network->ssid + network->ssid_len, 0,
1701 IW_ESSID_MAX_SIZE - network->ssid_len);
1702
1703 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1704 network->ssid, network->ssid_len);
1705 break;
1706
1707 case MFIE_TYPE_RATES:
1708 #ifdef CONFIG_IEEE80211_DEBUG
1709 p = rates_str;
1710 #endif
1711 network->rates_len = min(info_element->len,
1712 MAX_RATES_LENGTH);
1713 for (i = 0; i < network->rates_len; i++) {
1714 network->rates[i] = info_element->data[i];
1715 #ifdef CONFIG_IEEE80211_DEBUG
1716 p += snprintf(p, sizeof(rates_str) -
1717 (p - rates_str), "%02X ",
1718 network->rates[i]);
1719 #endif
1720 if (ieee80211_is_ofdm_rate
1721 (info_element->data[i])) {
1722 network->flags |= NETWORK_HAS_OFDM;
1723 if (info_element->data[i] &
1724 IEEE80211_BASIC_RATE_MASK)
1725 network->flags &=
1726 ~NETWORK_HAS_CCK;
1727 }
1728 }
1729
1730 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1731 rates_str, network->rates_len);
1732 break;
1733
1734 case MFIE_TYPE_RATES_EX:
1735 #ifdef CONFIG_IEEE80211_DEBUG
1736 p = rates_str;
1737 #endif
1738 network->rates_ex_len = min(info_element->len,
1739 MAX_RATES_EX_LENGTH);
1740 for (i = 0; i < network->rates_ex_len; i++) {
1741 network->rates_ex[i] = info_element->data[i];
1742 #ifdef CONFIG_IEEE80211_DEBUG
1743 p += snprintf(p, sizeof(rates_str) -
1744 (p - rates_str), "%02X ",
1745 network->rates[i]);
1746 #endif
1747 if (ieee80211_is_ofdm_rate
1748 (info_element->data[i])) {
1749 network->flags |= NETWORK_HAS_OFDM;
1750 if (info_element->data[i] &
1751 IEEE80211_BASIC_RATE_MASK)
1752 network->flags &=
1753 ~NETWORK_HAS_CCK;
1754 }
1755 }
1756
1757 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1758 rates_str, network->rates_ex_len);
1759 break;
1760
1761 case MFIE_TYPE_DS_SET:
1762 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1763 info_element->data[0]);
1764 network->channel = info_element->data[0];
1765 break;
1766
1767 case MFIE_TYPE_FH_SET:
1768 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1769 break;
1770
1771 case MFIE_TYPE_CF_SET:
1772 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1773 break;
1774
1775 case MFIE_TYPE_TIM:
1776 if(info_element->len < 4)
1777 break;
1778
1779 network->tim.tim_count = info_element->data[0];
1780 network->tim.tim_period = info_element->data[1];
1781
1782 network->dtim_period = info_element->data[1];
1783 if(ieee->state != IEEE80211_LINKED)
1784 break;
1785 //we use jiffies for legacy Power save
1786 network->last_dtim_sta_time[0] = jiffies;
1787 network->last_dtim_sta_time[1] = stats->mac_time[1];
1788
1789 network->dtim_data = IEEE80211_DTIM_VALID;
1790
1791 if(info_element->data[0] != 0)
1792 break;
1793
1794 if(info_element->data[2] & 1)
1795 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1796
1797 offset = (info_element->data[2] >> 1)*2;
1798
1799 if(ieee->assoc_id < 8*offset ||
1800 ieee->assoc_id > 8*(offset + info_element->len -3))
1801
1802 break;
1803
1804 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1805
1806 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1807 network->dtim_data |= IEEE80211_DTIM_UCAST;
1808
1809 break;
1810
1811 case MFIE_TYPE_ERP:
1812 network->erp_value = info_element->data[0];
1813 network->flags |= NETWORK_HAS_ERP_VALUE;
1814 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1815 network->erp_value);
1816 break;
1817 case MFIE_TYPE_IBSS_SET:
1818 network->atim_window = info_element->data[0];
1819 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1820 network->atim_window);
1821 break;
1822
1823 case MFIE_TYPE_CHALLENGE:
1824 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1825 break;
1826
1827 case MFIE_TYPE_GENERIC:
1828 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1829 info_element->len);
1830 if (!ieee80211_parse_qos_info_param_IE(info_element,
1831 network))
1832 break;
1833
1834 if (info_element->len >= 4 &&
1835 info_element->data[0] == 0x00 &&
1836 info_element->data[1] == 0x50 &&
1837 info_element->data[2] == 0xf2 &&
1838 info_element->data[3] == 0x01) {
1839 network->wpa_ie_len = min(info_element->len + 2,
1840 MAX_WPA_IE_LEN);
1841 memcpy(network->wpa_ie, info_element,
1842 network->wpa_ie_len);
1843 break;
1844 }
1845
1846 #ifdef THOMAS_TURBO
1847 if (info_element->len == 7 &&
1848 info_element->data[0] == 0x00 &&
1849 info_element->data[1] == 0xe0 &&
1850 info_element->data[2] == 0x4c &&
1851 info_element->data[3] == 0x01 &&
1852 info_element->data[4] == 0x02) {
1853 network->Turbo_Enable = 1;
1854 }
1855 #endif
1856
1857 //for HTcap and HTinfo parameters
1858 if(tmp_htcap_len == 0){
1859 if(info_element->len >= 4 &&
1860 info_element->data[0] == 0x00 &&
1861 info_element->data[1] == 0x90 &&
1862 info_element->data[2] == 0x4c &&
1863 info_element->data[3] == 0x033){
1864
1865 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1866 if(tmp_htcap_len != 0){
1867 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1868 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1869 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1870 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1871 }
1872 }
1873 if(tmp_htcap_len != 0)
1874 network->bssht.bdSupportHT = true;
1875 else
1876 network->bssht.bdSupportHT = false;
1877 }
1878
1879
1880 if(tmp_htinfo_len == 0){
1881 if(info_element->len >= 4 &&
1882 info_element->data[0] == 0x00 &&
1883 info_element->data[1] == 0x90 &&
1884 info_element->data[2] == 0x4c &&
1885 info_element->data[3] == 0x034){
1886
1887 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1888 if(tmp_htinfo_len != 0){
1889 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1890 if(tmp_htinfo_len){
1891 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1892 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1893 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1894 }
1895
1896 }
1897
1898 }
1899 }
1900
1901 if(ieee->aggregation){
1902 if(network->bssht.bdSupportHT){
1903 if(info_element->len >= 4 &&
1904 info_element->data[0] == 0x00 &&
1905 info_element->data[1] == 0xe0 &&
1906 info_element->data[2] == 0x4c &&
1907 info_element->data[3] == 0x02){
1908
1909 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1910 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1911
1912 }
1913 if(ht_realtek_agg_len >= 5){
1914 network->bssht.bdRT2RTAggregation = true;
1915
1916 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1917 network->bssht.bdRT2RTLongSlotTime = true;
1918 }
1919 }
1920
1921 }
1922
1923 if((info_element->len >= 3 &&
1924 info_element->data[0] == 0x00 &&
1925 info_element->data[1] == 0x05 &&
1926 info_element->data[2] == 0xb5) ||
1927 (info_element->len >= 3 &&
1928 info_element->data[0] == 0x00 &&
1929 info_element->data[1] == 0x0a &&
1930 info_element->data[2] == 0xf7) ||
1931 (info_element->len >= 3 &&
1932 info_element->data[0] == 0x00 &&
1933 info_element->data[1] == 0x10 &&
1934 info_element->data[2] == 0x18)){
1935
1936 network->broadcom_cap_exist = true;
1937
1938 }
1939
1940 if(info_element->len >= 3 &&
1941 info_element->data[0] == 0x00 &&
1942 info_element->data[1] == 0x0c &&
1943 info_element->data[2] == 0x43)
1944 {
1945 network->ralink_cap_exist = true;
1946 }
1947 else
1948 network->ralink_cap_exist = false;
1949 //added by amy for atheros AP
1950 if((info_element->len >= 3 &&
1951 info_element->data[0] == 0x00 &&
1952 info_element->data[1] == 0x03 &&
1953 info_element->data[2] == 0x7f) ||
1954 (info_element->len >= 3 &&
1955 info_element->data[0] == 0x00 &&
1956 info_element->data[1] == 0x13 &&
1957 info_element->data[2] == 0x74))
1958 {
1959 network->atheros_cap_exist = true;
1960 }
1961 else
1962 network->atheros_cap_exist = false;
1963
1964 if ((info_element->len >= 3 &&
1965 info_element->data[0] == 0x00 &&
1966 info_element->data[1] == 0x50 &&
1967 info_element->data[2] == 0x43) )
1968 {
1969 network->marvell_cap_exist = true;
1970 }
1971
1972
1973 if(info_element->len >= 3 &&
1974 info_element->data[0] == 0x00 &&
1975 info_element->data[1] == 0x40 &&
1976 info_element->data[2] == 0x96)
1977 {
1978 network->cisco_cap_exist = true;
1979 }
1980 else
1981 network->cisco_cap_exist = false;
1982 //added by amy for LEAP of cisco
1983 if(info_element->len > 4 &&
1984 info_element->data[0] == 0x00 &&
1985 info_element->data[1] == 0x40 &&
1986 info_element->data[2] == 0x96 &&
1987 info_element->data[3] == 0x01)
1988 {
1989 if(info_element->len == 6)
1990 {
1991 memcpy(network->CcxRmState, &info_element[4], 2);
1992 if(network->CcxRmState[0] != 0)
1993 {
1994 network->bCcxRmEnable = true;
1995 }
1996 else
1997 network->bCcxRmEnable = false;
1998 //
1999 // CCXv4 Table 59-1 MBSSID Masks.
2000 //
2001 network->MBssidMask = network->CcxRmState[1] & 0x07;
2002 if(network->MBssidMask != 0)
2003 {
2004 network->bMBssidValid = true;
2005 network->MBssidMask = 0xff << (network->MBssidMask);
2006 cpMacAddr(network->MBssid, network->bssid);
2007 network->MBssid[5] &= network->MBssidMask;
2008 }
2009 else
2010 {
2011 network->bMBssidValid = false;
2012 }
2013 }
2014 else
2015 {
2016 network->bCcxRmEnable = false;
2017 }
2018 }
2019 if(info_element->len > 4 &&
2020 info_element->data[0] == 0x00 &&
2021 info_element->data[1] == 0x40 &&
2022 info_element->data[2] == 0x96 &&
2023 info_element->data[3] == 0x03)
2024 {
2025 if(info_element->len == 5)
2026 {
2027 network->bWithCcxVerNum = true;
2028 network->BssCcxVerNumber = info_element->data[4];
2029 }
2030 else
2031 {
2032 network->bWithCcxVerNum = false;
2033 network->BssCcxVerNumber = 0;
2034 }
2035 }
2036 break;
2037
2038 case MFIE_TYPE_RSN:
2039 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2040 info_element->len);
2041 network->rsn_ie_len = min(info_element->len + 2,
2042 MAX_WPA_IE_LEN);
2043 memcpy(network->rsn_ie, info_element,
2044 network->rsn_ie_len);
2045 break;
2046
2047 //HT related element.
2048 case MFIE_TYPE_HT_CAP:
2049 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2050 info_element->len);
2051 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2052 if(tmp_htcap_len != 0){
2053 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2054 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2055 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2056 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2057
2058 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2059 // windows driver will update WMM parameters each beacon received once connected
2060 // Linux driver is a bit different.
2061 network->bssht.bdSupportHT = true;
2062 }
2063 else
2064 network->bssht.bdSupportHT = false;
2065 break;
2066
2067
2068 case MFIE_TYPE_HT_INFO:
2069 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2070 info_element->len);
2071 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2072 if(tmp_htinfo_len){
2073 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2074 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2075 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2076 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2077 }
2078 break;
2079
2080 case MFIE_TYPE_AIRONET:
2081 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2082 info_element->len);
2083 if(info_element->len >IE_CISCO_FLAG_POSITION)
2084 {
2085 network->bWithAironetIE = true;
2086
2087 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2088 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2089 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2090 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2091 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2092 {
2093 network->bCkipSupported = true;
2094 }
2095 else
2096 {
2097 network->bCkipSupported = false;
2098 }
2099 }
2100 else
2101 {
2102 network->bWithAironetIE = false;
2103 network->bCkipSupported = false;
2104 }
2105 break;
2106 case MFIE_TYPE_QOS_PARAMETER:
2107 printk(KERN_ERR
2108 "QoS Error need to parse QOS_PARAMETER IE\n");
2109 break;
2110
2111 #ifdef ENABLE_DOT11D
2112 case MFIE_TYPE_COUNTRY:
2113 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2114 info_element->len);
2115 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2116 break;
2117 #endif
2118
2119 default:
2120 IEEE80211_DEBUG_MGMT
2121 ("Unsupported info element: %s (%d)\n",
2122 get_info_element_string(info_element->id),
2123 info_element->id);
2124 break;
2125 }
2126
2127 length -= sizeof(*info_element) + info_element->len;
2128 info_element =
2129 (struct ieee80211_info_element *)&info_element->
2130 data[info_element->len];
2131 }
2132
2133 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2134 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation &&
2135 !network->marvell_cap_exist)
2136 {
2137 network->unknown_cap_exist = true;
2138 }
2139 else
2140 {
2141 network->unknown_cap_exist = false;
2142 }
2143 return 0;
2144 }
2145
2146 static inline u8 ieee80211_SignalStrengthTranslate(
2147 u8 CurrSS
2148 )
2149 {
2150 u8 RetSS;
2151
2152 // Step 1. Scale mapping.
2153 if(CurrSS >= 71 && CurrSS <= 100)
2154 {
2155 RetSS = 90 + ((CurrSS - 70) / 3);
2156 }
2157 else if(CurrSS >= 41 && CurrSS <= 70)
2158 {
2159 RetSS = 78 + ((CurrSS - 40) / 3);
2160 }
2161 else if(CurrSS >= 31 && CurrSS <= 40)
2162 {
2163 RetSS = 66 + (CurrSS - 30);
2164 }
2165 else if(CurrSS >= 21 && CurrSS <= 30)
2166 {
2167 RetSS = 54 + (CurrSS - 20);
2168 }
2169 else if(CurrSS >= 5 && CurrSS <= 20)
2170 {
2171 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2172 }
2173 else if(CurrSS == 4)
2174 {
2175 RetSS = 36;
2176 }
2177 else if(CurrSS == 3)
2178 {
2179 RetSS = 27;
2180 }
2181 else if(CurrSS == 2)
2182 {
2183 RetSS = 18;
2184 }
2185 else if(CurrSS == 1)
2186 {
2187 RetSS = 9;
2188 }
2189 else
2190 {
2191 RetSS = CurrSS;
2192 }
2193
2194 return RetSS;
2195 }
2196
2197 long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index.
2198 {
2199 long signal_power; // in dBm.
2200
2201 // Translate to dBm (x=0.5y-95).
2202 signal_power = (long)((signal_strength_index + 1) >> 1);
2203 signal_power -= 95;
2204
2205 return signal_power;
2206 }
2207
2208 static inline int ieee80211_network_init(
2209 struct ieee80211_device *ieee,
2210 struct ieee80211_probe_response *beacon,
2211 struct ieee80211_network *network,
2212 struct ieee80211_rx_stats *stats)
2213 {
2214 network->qos_data.active = 0;
2215 network->qos_data.supported = 0;
2216 network->qos_data.param_count = 0;
2217 network->qos_data.old_param_count = 0;
2218
2219 /* Pull out fixed field data */
2220 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2221 network->capability = le16_to_cpu(beacon->capability);
2222 network->last_scanned = jiffies;
2223 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2224 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2225 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2226 /* Where to pull this? beacon->listen_interval;*/
2227 network->listen_interval = 0x0A;
2228 network->rates_len = network->rates_ex_len = 0;
2229 network->last_associate = 0;
2230 network->ssid_len = 0;
2231 network->flags = 0;
2232 network->atim_window = 0;
2233 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2234 0x3 : 0x0;
2235 network->berp_info_valid = false;
2236 network->broadcom_cap_exist = false;
2237 network->ralink_cap_exist = false;
2238 network->atheros_cap_exist = false;
2239 network->marvell_cap_exist = false;
2240 network->cisco_cap_exist = false;
2241 network->unknown_cap_exist = false;
2242 #ifdef THOMAS_TURBO
2243 network->Turbo_Enable = 0;
2244 #endif
2245 #ifdef ENABLE_DOT11D
2246 network->CountryIeLen = 0;
2247 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2248 #endif
2249 //Initialize HT parameters
2250 HTInitializeBssDesc(&network->bssht);
2251 if (stats->freq == IEEE80211_52GHZ_BAND) {
2252 /* for A band (No DS info) */
2253 network->channel = stats->received_channel;
2254 } else
2255 network->flags |= NETWORK_HAS_CCK;
2256
2257 network->wpa_ie_len = 0;
2258 network->rsn_ie_len = 0;
2259
2260 if (ieee80211_parse_info_param
2261 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2262 return 1;
2263
2264 network->mode = 0;
2265 if (stats->freq == IEEE80211_52GHZ_BAND)
2266 network->mode = IEEE_A;
2267 else {
2268 if (network->flags & NETWORK_HAS_OFDM)
2269 network->mode |= IEEE_G;
2270 if (network->flags & NETWORK_HAS_CCK)
2271 network->mode |= IEEE_B;
2272 }
2273
2274 if (network->mode == 0) {
2275 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2276 "network.\n",
2277 escape_essid(network->ssid,
2278 network->ssid_len),
2279 network->bssid);
2280 return 1;
2281 }
2282
2283 if(network->bssht.bdSupportHT){
2284 if(network->mode == IEEE_A)
2285 network->mode = IEEE_N_5G;
2286 else if(network->mode & (IEEE_G | IEEE_B))
2287 network->mode = IEEE_N_24G;
2288 }
2289 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2290 network->flags |= NETWORK_EMPTY_ESSID;
2291
2292 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2293 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2294
2295 memcpy(&network->stats, stats, sizeof(network->stats));
2296
2297 return 0;
2298 }
2299
2300 static inline int is_same_network(struct ieee80211_network *src,
2301 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2302 {
2303 /* A network is only a duplicate if the channel, BSSID, ESSID
2304 * and the capability field (in particular IBSS and BSS) all match.
2305 * We treat all <hidden> with the same BSSID and channel
2306 * as one network */
2307 return (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2308 (src->channel == dst->channel) &&
2309 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2310 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2311 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2312 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2313 ((src->capability & WLAN_CAPABILITY_BSS) ==
2314 (dst->capability & WLAN_CAPABILITY_BSS)));
2315 }
2316
2317 static inline void update_network(struct ieee80211_network *dst,
2318 struct ieee80211_network *src)
2319 {
2320 int qos_active;
2321 u8 old_param;
2322
2323 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2324 dst->capability = src->capability;
2325 memcpy(dst->rates, src->rates, src->rates_len);
2326 dst->rates_len = src->rates_len;
2327 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2328 dst->rates_ex_len = src->rates_ex_len;
2329 if(src->ssid_len > 0)
2330 {
2331 memset(dst->ssid, 0, dst->ssid_len);
2332 dst->ssid_len = src->ssid_len;
2333 memcpy(dst->ssid, src->ssid, src->ssid_len);
2334 }
2335 dst->mode = src->mode;
2336 dst->flags = src->flags;
2337 dst->time_stamp[0] = src->time_stamp[0];
2338 dst->time_stamp[1] = src->time_stamp[1];
2339 if (src->flags & NETWORK_HAS_ERP_VALUE)
2340 {
2341 dst->erp_value = src->erp_value;
2342 dst->berp_info_valid = src->berp_info_valid = true;
2343 }
2344 dst->beacon_interval = src->beacon_interval;
2345 dst->listen_interval = src->listen_interval;
2346 dst->atim_window = src->atim_window;
2347 dst->dtim_period = src->dtim_period;
2348 dst->dtim_data = src->dtim_data;
2349 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2350 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2351 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2352
2353 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2354 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2355 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2356 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2357 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2358 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2359 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2360 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2361 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2362 dst->ralink_cap_exist = src->ralink_cap_exist;
2363 dst->atheros_cap_exist = src->atheros_cap_exist;
2364 dst->marvell_cap_exist = src->marvell_cap_exist;
2365 dst->cisco_cap_exist = src->cisco_cap_exist;
2366 dst->unknown_cap_exist = src->unknown_cap_exist;
2367 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2368 dst->wpa_ie_len = src->wpa_ie_len;
2369 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2370 dst->rsn_ie_len = src->rsn_ie_len;
2371
2372 dst->last_scanned = jiffies;
2373 /* qos related parameters */
2374 qos_active = dst->qos_data.active;
2375 old_param = dst->qos_data.param_count;
2376 if(dst->flags & NETWORK_HAS_QOS_MASK){
2377 //not update QOS paramter in beacon, as most AP will set all these parameter to 0.//WB
2378 }
2379 else {
2380 dst->qos_data.supported = src->qos_data.supported;
2381 dst->qos_data.param_count = src->qos_data.param_count;
2382 }
2383
2384 if(dst->qos_data.supported == 1) {
2385 dst->QoS_Enable = 1;
2386 if(dst->ssid_len)
2387 IEEE80211_DEBUG_QOS
2388 ("QoS the network %s is QoS supported\n",
2389 dst->ssid);
2390 else
2391 IEEE80211_DEBUG_QOS
2392 ("QoS the network is QoS supported\n");
2393 }
2394 dst->qos_data.active = qos_active;
2395 dst->qos_data.old_param_count = old_param;
2396
2397 /* dst->last_associate is not overwritten */
2398 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2399 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2400 src->wmm_param[1].ac_aci_acm_aifsn|| \
2401 src->wmm_param[2].ac_aci_acm_aifsn|| \
2402 src->wmm_param[3].ac_aci_acm_aifsn) {
2403 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2404 }
2405 #ifdef THOMAS_TURBO
2406 dst->Turbo_Enable = src->Turbo_Enable;
2407 #endif
2408
2409 #ifdef ENABLE_DOT11D
2410 dst->CountryIeLen = src->CountryIeLen;
2411 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2412 #endif
2413
2414 //added by amy for LEAP
2415 dst->bWithAironetIE = src->bWithAironetIE;
2416 dst->bCkipSupported = src->bCkipSupported;
2417 memcpy(dst->CcxRmState,src->CcxRmState,2);
2418 dst->bCcxRmEnable = src->bCcxRmEnable;
2419 dst->MBssidMask = src->MBssidMask;
2420 dst->bMBssidValid = src->bMBssidValid;
2421 memcpy(dst->MBssid,src->MBssid,6);
2422 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2423 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2424
2425 }
2426
2427 static inline int is_beacon(__le16 fc)
2428 {
2429 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2430 }
2431
2432 static inline void ieee80211_process_probe_response(
2433 struct ieee80211_device *ieee,
2434 struct ieee80211_probe_response *beacon,
2435 struct ieee80211_rx_stats *stats)
2436 {
2437 struct ieee80211_network network;
2438 struct ieee80211_network *target;
2439 struct ieee80211_network *oldest = NULL;
2440 #ifdef CONFIG_IEEE80211_DEBUG
2441 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2442 #endif
2443 unsigned long flags;
2444 short renew;
2445
2446 memset(&network, 0, sizeof(struct ieee80211_network));
2447 IEEE80211_DEBUG_SCAN(
2448 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2449 escape_essid(info_element->data, info_element->len),
2450 beacon->header.addr3,
2451 (beacon->capability & (1<<0xf)) ? '1' : '0',
2452 (beacon->capability & (1<<0xe)) ? '1' : '0',
2453 (beacon->capability & (1<<0xd)) ? '1' : '0',
2454 (beacon->capability & (1<<0xc)) ? '1' : '0',
2455 (beacon->capability & (1<<0xb)) ? '1' : '0',
2456 (beacon->capability & (1<<0xa)) ? '1' : '0',
2457 (beacon->capability & (1<<0x9)) ? '1' : '0',
2458 (beacon->capability & (1<<0x8)) ? '1' : '0',
2459 (beacon->capability & (1<<0x7)) ? '1' : '0',
2460 (beacon->capability & (1<<0x6)) ? '1' : '0',
2461 (beacon->capability & (1<<0x5)) ? '1' : '0',
2462 (beacon->capability & (1<<0x4)) ? '1' : '0',
2463 (beacon->capability & (1<<0x3)) ? '1' : '0',
2464 (beacon->capability & (1<<0x2)) ? '1' : '0',
2465 (beacon->capability & (1<<0x1)) ? '1' : '0',
2466 (beacon->capability & (1<<0x0)) ? '1' : '0');
2467
2468 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2469 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2470 escape_essid(info_element->data,
2471 info_element->len),
2472 beacon->header.addr3,
2473 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2474 IEEE80211_STYPE_PROBE_RESP ?
2475 "PROBE RESPONSE" : "BEACON");
2476 return;
2477 }
2478
2479 #ifdef ENABLE_DOT11D
2480 // For Asus EeePc request,
2481 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2482 // wireless adapter should follow the country code.
2483 // (2) If there is no any country code in beacon,
2484 // then wireless adapter should do active scan from ch1~11 and
2485 // passive scan from ch12~14
2486
2487 if( !IsLegalChannel(ieee, network.channel) )
2488 return;
2489 if(ieee->bGlobalDomain)
2490 {
2491 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2492 {
2493 // Case 1: Country code
2494 if(IS_COUNTRY_IE_VALID(ieee) )
2495 {
2496 if( !IsLegalChannel(ieee, network.channel) )
2497 {
2498 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2499 return;
2500 }
2501 }
2502 // Case 2: No any country code.
2503 else
2504 {
2505 // Filter over channel ch12~14
2506 if(network.channel > 11)
2507 {
2508 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2509 return;
2510 }
2511 }
2512 }
2513 else
2514 {
2515 // Case 1: Country code
2516 if(IS_COUNTRY_IE_VALID(ieee) )
2517 {
2518 if( !IsLegalChannel(ieee, network.channel) )
2519 {
2520 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2521 return;
2522 }
2523 }
2524 // Case 2: No any country code.
2525 else
2526 {
2527 // Filter over channel ch12~14
2528 if(network.channel > 14)
2529 {
2530 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2531 return;
2532 }
2533 }
2534 }
2535 }
2536 #endif
2537
2538 /* The network parsed correctly -- so now we scan our known networks
2539 * to see if we can find it in our list.
2540 *
2541 * NOTE: This search is definitely not optimized. Once its doing
2542 * the "right thing" we'll optimize it for efficiency if
2543 * necessary */
2544
2545 /* Search for this entry in the list and update it if it is
2546 * already there. */
2547
2548 spin_lock_irqsave(&ieee->lock, flags);
2549
2550 if(is_same_network(&ieee->current_network, &network, ieee)) {
2551 update_network(&ieee->current_network, &network);
2552 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2553 && ieee->current_network.berp_info_valid){
2554 if(ieee->current_network.erp_value& ERP_UseProtection)
2555 ieee->current_network.buseprotection = true;
2556 else
2557 ieee->current_network.buseprotection = false;
2558 }
2559 if(is_beacon(beacon->header.frame_ctl))
2560 {
2561 if(ieee->state == IEEE80211_LINKED)
2562 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2563 }
2564 else //hidden AP
2565 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2566 }
2567
2568 list_for_each_entry(target, &ieee->network_list, list) {
2569 if (is_same_network(target, &network, ieee))
2570 break;
2571 if ((oldest == NULL) ||
2572 (target->last_scanned < oldest->last_scanned))
2573 oldest = target;
2574 }
2575
2576 /* If we didn't find a match, then get a new network slot to initialize
2577 * with this beacon's information */
2578 if (&target->list == &ieee->network_list) {
2579 if (list_empty(&ieee->network_free_list)) {
2580 /* If there are no more slots, expire the oldest */
2581 list_del(&oldest->list);
2582 target = oldest;
2583 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2584 "network list.\n",
2585 escape_essid(target->ssid,
2586 target->ssid_len),
2587 target->bssid);
2588 } else {
2589 /* Otherwise just pull from the free list */
2590 target = list_entry(ieee->network_free_list.next,
2591 struct ieee80211_network, list);
2592 list_del(ieee->network_free_list.next);
2593 }
2594
2595
2596 #ifdef CONFIG_IEEE80211_DEBUG
2597 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2598 escape_essid(network.ssid,
2599 network.ssid_len),
2600 network.bssid,
2601 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2602 IEEE80211_STYPE_PROBE_RESP ?
2603 "PROBE RESPONSE" : "BEACON");
2604 #endif
2605 memcpy(target, &network, sizeof(*target));
2606 list_add_tail(&target->list, &ieee->network_list);
2607 } else {
2608 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2609 escape_essid(target->ssid,
2610 target->ssid_len),
2611 target->bssid,
2612 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2613 IEEE80211_STYPE_PROBE_RESP ?
2614 "PROBE RESPONSE" : "BEACON");
2615
2616 /* we have an entry and we are going to update it. But this entry may
2617 * be already expired. In this case we do the same as we found a new
2618 * net and call the new_net handler
2619 */
2620 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2621 //YJ,add,080819,for hidden ap
2622 if(is_beacon(beacon->header.frame_ctl) == 0)
2623 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2624 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2625 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2626 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2627 renew = 1;
2628 //YJ,add,080819,for hidden ap,end
2629
2630 update_network(target, &network);
2631 }
2632
2633 spin_unlock_irqrestore(&ieee->lock, flags);
2634 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2635 (ieee->state == IEEE80211_LINKED)) {
2636 if(ieee->handle_beacon != NULL) {
2637 ieee->handle_beacon(ieee, beacon, &ieee->current_network);
2638 }
2639 }
2640 }
2641
2642 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2643 struct ieee80211_hdr_4addr *header,
2644 struct ieee80211_rx_stats *stats)
2645 {
2646 if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP &&
2647 WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON)
2648 ieee->last_rx_ps_time = jiffies;
2649
2650 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2651
2652 case IEEE80211_STYPE_BEACON:
2653 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2654 WLAN_FC_GET_STYPE(header->frame_ctl));
2655 IEEE80211_DEBUG_SCAN("Beacon\n");
2656 ieee80211_process_probe_response(
2657 ieee, (struct ieee80211_probe_response *)header, stats);
2658
2659 if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
2660 ieee->iw_mode == IW_MODE_INFRA &&
2661 ieee->state == IEEE80211_LINKED))
2662 {
2663 tasklet_schedule(&ieee->ps_task);
2664 }
2665
2666 break;
2667
2668 case IEEE80211_STYPE_PROBE_RESP:
2669 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2670 WLAN_FC_GET_STYPE(header->frame_ctl));
2671 IEEE80211_DEBUG_SCAN("Probe response\n");
2672 ieee80211_process_probe_response(
2673 ieee, (struct ieee80211_probe_response *)header, stats);
2674 break;
2675
2676 }
2677 }
kernel source for telekom puls (alcatel/mediatek)