projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / rtl8192su / 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/config.h>
26 #include <linux/errno.h>
27 #include <linux/if_arp.h>
28 #include <linux/in6.h>
29 #include <linux/in.h>
30 #include <linux/ip.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/netdevice.h>
34 #include <linux/pci.h>
35 #include <linux/proc_fs.h>
36 #include <linux/skbuff.h>
37 #include <linux/slab.h>
38 #include <linux/tcp.h>
39 #include <linux/types.h>
40 #include <linux/wireless.h>
41 #include <linux/etherdevice.h>
42 #include <asm/uaccess.h>
43 #include <linux/ctype.h>
44
45 #include "ieee80211.h"
46 #include "dot11d.h"
47 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
48 struct sk_buff *skb,
49 struct ieee80211_rx_stats *rx_stats)
50 {
51 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
52 u16 fc = le16_to_cpu(hdr->frame_ctl);
53
54 skb->dev = ieee->dev;
55 skb_reset_mac_header(skb);
56
57 skb_pull(skb, ieee80211_get_hdrlen(fc));
58 skb->pkt_type = PACKET_OTHERHOST;
59 skb->protocol = __constant_htons(ETH_P_80211_RAW);
60 memset(skb->cb, 0, sizeof(skb->cb));
61 netif_rx(skb);
62 }
63
64
65 /* Called only as a tasklet (software IRQ) */
66 static struct ieee80211_frag_entry *
67 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
68 unsigned int frag, u8 tid,u8 *src, u8 *dst)
69 {
70 struct ieee80211_frag_entry *entry;
71 int i;
72
73 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
74 entry = &ieee->frag_cache[tid][i];
75 if (entry->skb != NULL &&
76 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
77 IEEE80211_DEBUG_FRAG(
78 "expiring fragment cache entry "
79 "seq=%u last_frag=%u\n",
80 entry->seq, entry->last_frag);
81 dev_kfree_skb_any(entry->skb);
82 entry->skb = NULL;
83 }
84
85 if (entry->skb != NULL && entry->seq == seq &&
86 (entry->last_frag + 1 == frag || frag == -1) &&
87 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
88 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
89 return entry;
90 }
91
92 return NULL;
93 }
94
95 /* Called only as a tasklet (software IRQ) */
96 static struct sk_buff *
97 ieee80211_frag_cache_get(struct ieee80211_device *ieee,
98 struct ieee80211_hdr_4addr *hdr)
99 {
100 struct sk_buff *skb = NULL;
101 u16 fc = le16_to_cpu(hdr->frame_ctl);
102 u16 sc = le16_to_cpu(hdr->seq_ctl);
103 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
104 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
105 struct ieee80211_frag_entry *entry;
106 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
107 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
108 u8 tid;
109
110 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
111 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
112 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
113 tid = UP2AC(tid);
114 tid ++;
115 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
116 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
117 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
118 tid = UP2AC(tid);
119 tid ++;
120 } else {
121 tid = 0;
122 }
123
124 if (frag == 0) {
125 /* Reserve enough space to fit maximum frame length */
126 skb = dev_alloc_skb(ieee->dev->mtu +
127 sizeof(struct ieee80211_hdr_4addr) +
128 8 /* LLC */ +
129 2 /* alignment */ +
130 8 /* WEP */ +
131 ETH_ALEN /* WDS */ +
132 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
133 if (skb == NULL)
134 return NULL;
135
136 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
137 ieee->frag_next_idx[tid]++;
138 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
139 ieee->frag_next_idx[tid] = 0;
140
141 if (entry->skb != NULL)
142 dev_kfree_skb_any(entry->skb);
143
144 entry->first_frag_time = jiffies;
145 entry->seq = seq;
146 entry->last_frag = frag;
147 entry->skb = skb;
148 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
149 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
150 } else {
151 /* received a fragment of a frame for which the head fragment
152 * should have already been received */
153 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
154 hdr->addr1);
155 if (entry != NULL) {
156 entry->last_frag = frag;
157 skb = entry->skb;
158 }
159 }
160
161 return skb;
162 }
163
164
165 /* Called only as a tasklet (software IRQ) */
166 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
167 struct ieee80211_hdr_4addr *hdr)
168 {
169 u16 fc = le16_to_cpu(hdr->frame_ctl);
170 u16 sc = le16_to_cpu(hdr->seq_ctl);
171 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
172 struct ieee80211_frag_entry *entry;
173 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
174 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
175 u8 tid;
176
177 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
178 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
179 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
180 tid = UP2AC(tid);
181 tid ++;
182 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
183 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
184 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
185 tid = UP2AC(tid);
186 tid ++;
187 } else {
188 tid = 0;
189 }
190
191 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
192 hdr->addr1);
193
194 if (entry == NULL) {
195 IEEE80211_DEBUG_FRAG(
196 "could not invalidate fragment cache "
197 "entry (seq=%u)\n", seq);
198 return -1;
199 }
200
201 entry->skb = NULL;
202 return 0;
203 }
204
205
206
207 /* ieee80211_rx_frame_mgtmt
208 *
209 * Responsible for handling management control frames
210 *
211 * Called by ieee80211_rtl_rx */
212 static inline int
213 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
214 struct ieee80211_rx_stats *rx_stats, u16 type,
215 u16 stype)
216 {
217 /* On the struct stats definition there is written that
218 * this is not mandatory.... but seems that the probe
219 * response parser uses it
220 */
221 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
222
223 rx_stats->len = skb->len;
224 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
225 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN)))
226 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames
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 }
239
240
241
242 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
243 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
244 static unsigned char rfc1042_header[] =
245 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
246 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
247 static unsigned char bridge_tunnel_header[] =
248 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
249 /* No encapsulation header if EtherType < 0x600 (=length) */
250
251 /* Called by ieee80211_rx_frame_decrypt */
252 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
253 struct sk_buff *skb, size_t hdrlen)
254 {
255 struct net_device *dev = ieee->dev;
256 u16 fc, ethertype;
257 struct ieee80211_hdr_4addr *hdr;
258 u8 *pos;
259
260 if (skb->len < 24)
261 return 0;
262
263 hdr = (struct ieee80211_hdr_4addr *) skb->data;
264 fc = le16_to_cpu(hdr->frame_ctl);
265
266 /* check that the frame is unicast frame to us */
267 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
268 IEEE80211_FCTL_TODS &&
269 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
270 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
271 /* ToDS frame with own addr BSSID and DA */
272 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
273 IEEE80211_FCTL_FROMDS &&
274 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
275 /* FromDS frame with own addr as DA */
276 } else
277 return 0;
278
279 if (skb->len < 24 + 8)
280 return 0;
281
282 /* check for port access entity Ethernet type */
283 // pos = skb->data + 24;
284 pos = skb->data + hdrlen;
285 ethertype = (pos[6] << 8) | pos[7];
286 if (ethertype == ETH_P_PAE)
287 return 1;
288
289 return 0;
290 }
291
292 /* Called only as a tasklet (software IRQ), by ieee80211_rtl_rx */
293 static inline int
294 ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
295 struct ieee80211_crypt_data *crypt)
296 {
297 struct ieee80211_hdr_4addr *hdr;
298 int res, hdrlen;
299
300 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
301 return 0;
302 #if 1
303 if (ieee->hwsec_active)
304 {
305 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
306 tcb_desc->bHwSec = 1;
307 }
308 #endif
309 hdr = (struct ieee80211_hdr_4addr *) skb->data;
310 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
311
312 #ifdef CONFIG_IEEE80211_CRYPT_TKIP
313 if (ieee->tkip_countermeasures &&
314 strcmp(crypt->ops->name, "TKIP") == 0) {
315 if (net_ratelimit()) {
316 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
317 "received packet from " MAC_FMT "\n",
318 ieee->dev->name, MAC_ARG(hdr->addr2));
319 }
320 return -1;
321 }
322 #endif
323
324 atomic_inc(&crypt->refcnt);
325 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
326 atomic_dec(&crypt->refcnt);
327 if (res < 0) {
328 IEEE80211_DEBUG_DROP(
329 "decryption failed (SA=" MAC_FMT
330 ") res=%d\n", MAC_ARG(hdr->addr2), res);
331 if (res == -2)
332 IEEE80211_DEBUG_DROP("Decryption failed ICV "
333 "mismatch (key %d)\n",
334 skb->data[hdrlen + 3] >> 6);
335 ieee->ieee_stats.rx_discards_undecryptable++;
336 return -1;
337 }
338
339 return res;
340 }
341
342
343 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
344 static inline int
345 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
346 int keyidx, struct ieee80211_crypt_data *crypt)
347 {
348 struct ieee80211_hdr_4addr *hdr;
349 int res, hdrlen;
350
351 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
352 return 0;
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 atomic_inc(&crypt->refcnt);
363 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
364 atomic_dec(&crypt->refcnt);
365 if (res < 0) {
366 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
367 " (SA=" MAC_FMT " keyidx=%d)\n",
368 ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
369 return -1;
370 }
371
372 return 0;
373 }
374
375
376 /* this function is stolen from ipw2200 driver*/
377 #define IEEE_PACKET_RETRY_TIME (5*HZ)
378 static int is_duplicate_packet(struct ieee80211_device *ieee,
379 struct ieee80211_hdr_4addr *header)
380 {
381 u16 fc = le16_to_cpu(header->frame_ctl);
382 u16 sc = le16_to_cpu(header->seq_ctl);
383 u16 seq = WLAN_GET_SEQ_SEQ(sc);
384 u16 frag = WLAN_GET_SEQ_FRAG(sc);
385 u16 *last_seq, *last_frag;
386 unsigned long *last_time;
387 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
388 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
389 u8 tid;
390
391
392 //TO2DS and QoS
393 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
394 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
395 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
396 tid = UP2AC(tid);
397 tid ++;
398 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
399 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
400 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
401 tid = UP2AC(tid);
402 tid ++;
403 } else { // no QoS
404 tid = 0;
405 }
406
407 switch (ieee->iw_mode) {
408 case IW_MODE_ADHOC:
409 {
410 struct list_head *p;
411 struct ieee_ibss_seq *entry = NULL;
412 u8 *mac = header->addr2;
413 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
414 //for (pos = (head)->next; pos != (head); pos = pos->next)
415 //__list_for_each(p, &ieee->ibss_mac_hash[index]) {
416 list_for_each(p, &ieee->ibss_mac_hash[index]) {
417 entry = list_entry(p, struct ieee_ibss_seq, list);
418 if (!memcmp(entry->mac, mac, ETH_ALEN))
419 break;
420 }
421 // if (memcmp(entry->mac, mac, ETH_ALEN)){
422 if (p == &ieee->ibss_mac_hash[index]) {
423 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
424 if (!entry) {
425 printk(KERN_WARNING "Cannot malloc new mac entry\n");
426 return 0;
427 }
428 memcpy(entry->mac, mac, ETH_ALEN);
429 entry->seq_num[tid] = seq;
430 entry->frag_num[tid] = frag;
431 entry->packet_time[tid] = jiffies;
432 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
433 return 0;
434 }
435 last_seq = &entry->seq_num[tid];
436 last_frag = &entry->frag_num[tid];
437 last_time = &entry->packet_time[tid];
438 break;
439 }
440
441 case IW_MODE_INFRA:
442 last_seq = &ieee->last_rxseq_num[tid];
443 last_frag = &ieee->last_rxfrag_num[tid];
444 last_time = &ieee->last_packet_time[tid];
445
446 break;
447 default:
448 return 0;
449 }
450
451 // if(tid != 0) {
452 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
453 // }
454 if ((*last_seq == seq) &&
455 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
456 if (*last_frag == frag){
457 //printk(KERN_WARNING "[1] go drop!\n");
458 goto drop;
459
460 }
461 if (*last_frag + 1 != frag)
462 /* out-of-order fragment */
463 //printk(KERN_WARNING "[2] go drop!\n");
464 goto drop;
465 } else
466 *last_seq = seq;
467
468 *last_frag = frag;
469 *last_time = jiffies;
470 return 0;
471
472 drop:
473 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
474 // printk("DUP\n");
475
476 return 1;
477 }
478 bool
479 AddReorderEntry(
480 PRX_TS_RECORD pTS,
481 PRX_REORDER_ENTRY pReorderEntry
482 )
483 {
484 struct list_head *pList = &pTS->RxPendingPktList;
485 #if 1
486 while(pList->next != &pTS->RxPendingPktList)
487 {
488 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
489 {
490 pList = pList->next;
491 }
492 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
493 {
494 return false;
495 }
496 else
497 {
498 break;
499 }
500 }
501 #endif
502 pReorderEntry->List.next = pList->next;
503 pReorderEntry->List.next->prev = &pReorderEntry->List;
504 pReorderEntry->List.prev = pList;
505 pList->next = &pReorderEntry->List;
506
507 return true;
508 }
509
510 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
511 {
512 u8 i = 0 , j=0;
513 u16 ethertype;
514 // if(index > 1)
515 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index);
516 for(j = 0; j<index; j++)
517 {
518 //added by amy for reorder
519 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
520 for(i = 0; i<prxb->nr_subframes; i++) {
521 struct sk_buff *sub_skb = prxb->subframes[i];
522
523 /* convert hdr + possible LLC headers into Ethernet header */
524 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
525 if (sub_skb->len >= 8 &&
526 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
527 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
528 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
529 /* remove RFC1042 or Bridge-Tunnel encapsulation and
530 * replace EtherType */
531 skb_pull(sub_skb, SNAP_SIZE);
532 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
533 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
534 } else {
535 u16 len;
536 /* Leave Ethernet header part of hdr and full payload */
537 len = htons(sub_skb->len);
538 memcpy(skb_push(sub_skb, 2), &len, 2);
539 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
540 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
541 }
542 //stats->rx_packets++;
543 //stats->rx_bytes += sub_skb->len;
544
545 /* Indicat the packets to upper layer */
546 if (sub_skb) {
547 //printk("0skb_len(%d)\n", skb->len);
548 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
549 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
550 sub_skb->dev = ieee->dev;
551 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
552 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
553 ieee->last_rx_ps_time = jiffies;
554 //printk("1skb_len(%d)\n", skb->len);
555 netif_rx(sub_skb);
556 }
557 }
558 kfree(prxb);
559 prxb = NULL;
560 }
561 }
562
563
564 void RxReorderIndicatePacket( struct ieee80211_device *ieee,
565 struct ieee80211_rxb* prxb,
566 PRX_TS_RECORD pTS,
567 u16 SeqNum)
568 {
569 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
570 PRX_REORDER_ENTRY pReorderEntry = NULL;
571 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
572 u8 WinSize = pHTInfo->RxReorderWinSize;
573 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
574 u8 index = 0;
575 bool bMatchWinStart = false, bPktInBuf = false;
576 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
577 /* Rx Reorder initialize condition.*/
578 if(pTS->RxIndicateSeq == 0xffff) {
579 pTS->RxIndicateSeq = SeqNum;
580 }
581
582 /* Drop out the packet which SeqNum is smaller than WinStart */
583 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
584 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
585 pTS->RxIndicateSeq, SeqNum);
586 pHTInfo->RxReorderDropCounter++;
587 {
588 int i;
589 for(i =0; i < prxb->nr_subframes; i++) {
590 dev_kfree_skb(prxb->subframes[i]);
591 }
592 kfree(prxb);
593 prxb = NULL;
594 }
595 return;
596 }
597
598 /*
599 * Sliding window manipulation. Conditions includes:
600 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
601 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
602 */
603 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
604 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
605 bMatchWinStart = true;
606 } else if(SN_LESS(WinEnd, SeqNum)) {
607 if(SeqNum >= (WinSize - 1)) {
608 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
609 } else {
610 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
611 }
612 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
613 }
614
615 /*
616 * Indication process.
617 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
618 * with the SeqNum smaller than latest WinStart and buffer other packets.
619 */
620 /* For Rx Reorder condition:
621 * 1. All packets with SeqNum smaller than WinStart => Indicate
622 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
623 */
624 if(bMatchWinStart) {
625 /* Current packet is going to be indicated.*/
626 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
627 pTS->RxIndicateSeq, SeqNum);
628 prxbIndicateArray[0] = prxb;
629 // printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum);
630 index = 1;
631 } else {
632 /* Current packet is going to be inserted into pending list.*/
633 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__);
634 if(!list_empty(&ieee->RxReorder_Unused_List)) {
635 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
636 list_del_init(&pReorderEntry->List);
637
638 /* Make a reorder entry and insert into a the packet list.*/
639 pReorderEntry->SeqNum = SeqNum;
640 pReorderEntry->prxb = prxb;
641 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
642
643 #if 1
644 if(!AddReorderEntry(pTS, pReorderEntry)) {
645 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
646 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
647 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
648 {
649 int i;
650 for(i =0; i < prxb->nr_subframes; i++) {
651 dev_kfree_skb(prxb->subframes[i]);
652 }
653 kfree(prxb);
654 prxb = NULL;
655 }
656 } else {
657 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
658 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
659 }
660 #endif
661 }
662 else {
663 /*
664 * Packets are dropped if there is not enough reorder entries.
665 * This part shall be modified!! We can just indicate all the
666 * packets in buffer and get reorder entries.
667 */
668 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
669 {
670 int i;
671 for(i =0; i < prxb->nr_subframes; i++) {
672 dev_kfree_skb(prxb->subframes[i]);
673 }
674 kfree(prxb);
675 prxb = NULL;
676 }
677 }
678 }
679
680 /* Check if there is any packet need indicate.*/
681 while(!list_empty(&pTS->RxPendingPktList)) {
682 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
683 #if 1
684 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
685 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
686 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
687 {
688 /* This protect buffer from overflow. */
689 if(index >= REORDER_WIN_SIZE) {
690 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
691 bPktInBuf = true;
692 break;
693 }
694
695 list_del_init(&pReorderEntry->List);
696
697 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
698 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
699
700 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
701 prxbIndicateArray[index] = pReorderEntry->prxb;
702 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
703 index++;
704
705 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
706 } else {
707 bPktInBuf = true;
708 break;
709 }
710 #endif
711 }
712
713 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
714 if(index>0) {
715 // Cancel previous pending timer.
716 if(timer_pending(&pTS->RxPktPendingTimer))
717 {
718 del_timer_sync(&pTS->RxPktPendingTimer);
719 }
720 // del_timer_sync(&pTS->RxPktPendingTimer);
721 pTS->RxTimeoutIndicateSeq = 0xffff;
722
723 // Indicate packets
724 if(index>REORDER_WIN_SIZE){
725 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
726 return;
727 }
728 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
729 bPktInBuf = false;
730 }
731
732 #if 1
733 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
734 // Set new pending timer.
735 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
736 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
737 mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime));
738 }
739 #endif
740 }
741
742 u8 parse_subframe(struct sk_buff *skb,
743 struct ieee80211_rx_stats *rx_stats,
744 struct ieee80211_rxb *rxb,u8* src,u8* dst)
745 {
746 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
747 u16 fc = le16_to_cpu(hdr->frame_ctl);
748
749 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
750 u16 ChkLength;
751 bool bIsAggregateFrame = false;
752 u16 nSubframe_Length;
753 u8 nPadding_Length = 0;
754 u16 SeqNum=0;
755
756 struct sk_buff *sub_skb;
757 u8 *data_ptr;
758 /* just for debug purpose */
759 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
760
761 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
762 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
763 bIsAggregateFrame = true;
764 }
765
766 if(IEEE80211_QOS_HAS_SEQ(fc)) {
767 LLCOffset += 2;
768 }
769
770 if(rx_stats->bContainHTC) {
771 LLCOffset += sHTCLng;
772 }
773 //printk("ChkLength = %d\n", LLCOffset);
774 // Null packet, don't indicate it to upper layer
775 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
776
777 if( skb->len <= ChkLength ) {
778 return 0;
779 }
780
781 skb_pull(skb, LLCOffset);
782
783 if(!bIsAggregateFrame) {
784 rxb->nr_subframes = 1;
785 #ifdef JOHN_NOCPY
786 rxb->subframes[0] = skb;
787 #else
788 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
789 #endif
790
791 memcpy(rxb->src,src,ETH_ALEN);
792 memcpy(rxb->dst,dst,ETH_ALEN);
793 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
794 return 1;
795 } else {
796 rxb->nr_subframes = 0;
797 memcpy(rxb->src,src,ETH_ALEN);
798 memcpy(rxb->dst,dst,ETH_ALEN);
799 while(skb->len > ETHERNET_HEADER_SIZE) {
800 /* Offset 12 denote 2 mac address */
801 nSubframe_Length = *((u16*)(skb->data + 12));
802 //==m==>change the length order
803 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
804
805 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
806 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
807 __FUNCTION__,rxb->nr_subframes);
808 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
809 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
810 printk("The Packet SeqNum is %d\n",SeqNum);
811 return 0;
812 }
813
814 /* move the data point to data content */
815 skb_pull(skb, ETHERNET_HEADER_SIZE);
816
817 #ifdef JOHN_NOCPY
818 sub_skb = skb_clone(skb, GFP_ATOMIC);
819 sub_skb->len = nSubframe_Length;
820 sub_skb->tail = sub_skb->data + nSubframe_Length;
821 #else
822 /* Allocate new skb for releasing to upper layer */
823 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
824 skb_reserve(sub_skb, 12);
825 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
826 memcpy(data_ptr,skb->data,nSubframe_Length);
827 #endif
828 rxb->subframes[rxb->nr_subframes++] = sub_skb;
829 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
830 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
831 break;
832 }
833 skb_pull(skb,nSubframe_Length);
834
835 if(skb->len != 0) {
836 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
837 if(nPadding_Length == 4) {
838 nPadding_Length = 0;
839 }
840
841 if(skb->len < nPadding_Length) {
842 return 0;
843 }
844
845 skb_pull(skb,nPadding_Length);
846 }
847 }
848 #ifdef JOHN_NOCPY
849 dev_kfree_skb(skb);
850 #endif
851 //{just for debug added by david
852 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
853 //}
854 return rxb->nr_subframes;
855 }
856 }
857
858 /* All received frames are sent to this function. @skb contains the frame in
859 * IEEE 802.11 format, i.e., in the format it was sent over air.
860 * This function is called only as a tasklet (software IRQ). */
861 int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
862 struct ieee80211_rx_stats *rx_stats)
863 {
864 struct net_device *dev = ieee->dev;
865 struct ieee80211_hdr_4addr *hdr;
866 //struct ieee80211_hdr_3addrqos *hdr;
867
868 size_t hdrlen;
869 u16 fc, type, stype, sc;
870 struct net_device_stats *stats;
871 unsigned int frag;
872 u8 *payload;
873 u16 ethertype;
874 //added by amy for reorder
875 u8 TID = 0;
876 u16 SeqNum = 0;
877 PRX_TS_RECORD pTS = NULL;
878 //bool bIsAggregateFrame = false;
879 //added by amy for reorder
880 // u16 qos_ctl = 0;
881 u8 dst[ETH_ALEN];
882 u8 src[ETH_ALEN];
883 u8 bssid[ETH_ALEN];
884 struct ieee80211_crypt_data *crypt = NULL;
885 int keyidx = 0;
886
887 int i;
888 struct ieee80211_rxb* rxb = NULL;
889 // cheat the the hdr type
890 hdr = (struct ieee80211_hdr_4addr *)skb->data;
891 stats = &ieee->stats;
892
893 if (skb->len < 10) {
894 printk(KERN_INFO "%s: SKB length < 10\n",
895 dev->name);
896 goto rx_dropped;
897 }
898
899 fc = le16_to_cpu(hdr->frame_ctl);
900 type = WLAN_FC_GET_TYPE(fc);
901 stype = WLAN_FC_GET_STYPE(fc);
902 sc = le16_to_cpu(hdr->seq_ctl);
903
904 frag = WLAN_GET_SEQ_FRAG(sc);
905 hdrlen = ieee80211_get_hdrlen(fc);
906
907 if(HTCCheck(ieee, skb->data))
908 {
909 if(net_ratelimit())
910 printk("find HTCControl\n");
911 hdrlen += 4;
912 rx_stats->bContainHTC = 1;
913 }
914
915 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
916
917 if (ieee->iw_mode == IW_MODE_MONITOR) {
918 ieee80211_monitor_rx(ieee, skb, rx_stats);
919 stats->rx_packets++;
920 stats->rx_bytes += skb->len;
921 return 1;
922 }
923
924 if (ieee->host_decrypt) {
925 int idx = 0;
926 if (skb->len >= hdrlen + 3)
927 idx = skb->data[hdrlen + 3] >> 6;
928 crypt = ieee->crypt[idx];
929
930 /* allow NULL decrypt to indicate an station specific override
931 * for default encryption */
932 if (crypt && (crypt->ops == NULL ||
933 crypt->ops->decrypt_mpdu == NULL))
934 crypt = NULL;
935
936 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
937 /* This seems to be triggered by some (multicast?)
938 * frames from other than current BSS, so just drop the
939 * frames silently instead of filling system log with
940 * these reports. */
941 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
942 " (SA=" MAC_FMT ")\n",
943 MAC_ARG(hdr->addr2));
944 ieee->ieee_stats.rx_discards_undecryptable++;
945 goto rx_dropped;
946 }
947 }
948
949 if (skb->len < IEEE80211_DATA_HDR3_LEN)
950 goto rx_dropped;
951
952 // if QoS enabled, should check the sequence for each of the AC
953 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
954 if (is_duplicate_packet(ieee, hdr))
955 goto rx_dropped;
956
957 }
958 else
959 {
960 PRX_TS_RECORD pRxTS = NULL;
961 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid);
962 #if 1
963 if(GetTs(
964 ieee,
965 (PTS_COMMON_INFO*) &pRxTS,
966 hdr->addr2,
967 (u8)Frame_QoSTID((u8*)(skb->data)),
968 RX_DIR,
969 true))
970 {
971
972 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc));
973 if( (fc & (1<<11)) &&
974 (frag == pRxTS->RxLastFragNum) &&
975 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
976 {
977 goto rx_dropped;
978 }
979 else
980 {
981 pRxTS->RxLastFragNum = frag;
982 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
983 }
984 }
985 else
986 {
987 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
988 goto rx_dropped;
989 }
990 }
991 #endif
992 if (type == IEEE80211_FTYPE_MGMT) {
993
994 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
995 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
996 goto rx_dropped;
997 else
998 goto rx_exit;
999 }
1000
1001 /* Data frame - extract src/dst addresses */
1002 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1003 case IEEE80211_FCTL_FROMDS:
1004 memcpy(dst, hdr->addr1, ETH_ALEN);
1005 memcpy(src, hdr->addr3, ETH_ALEN);
1006 memcpy(bssid, hdr->addr2, ETH_ALEN);
1007 break;
1008 case IEEE80211_FCTL_TODS:
1009 memcpy(dst, hdr->addr3, ETH_ALEN);
1010 memcpy(src, hdr->addr2, ETH_ALEN);
1011 memcpy(bssid, hdr->addr1, ETH_ALEN);
1012 break;
1013 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1014 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1015 goto rx_dropped;
1016 memcpy(dst, hdr->addr3, ETH_ALEN);
1017 memcpy(src, hdr->addr4, ETH_ALEN);
1018 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1019 break;
1020 case 0:
1021 memcpy(dst, hdr->addr1, ETH_ALEN);
1022 memcpy(src, hdr->addr2, ETH_ALEN);
1023 memcpy(bssid, hdr->addr3, ETH_ALEN);
1024 break;
1025 }
1026
1027
1028 dev->last_rx = jiffies;
1029
1030 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1031 /* Nullfunc frames may have PS-bit set, so they must be passed to
1032 * hostap_handle_sta_rx() before being dropped here. */
1033 if (stype != IEEE80211_STYPE_DATA &&
1034 stype != IEEE80211_STYPE_DATA_CFACK &&
1035 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1036 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1037 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1038 ) {
1039 if (stype != IEEE80211_STYPE_NULLFUNC)
1040 IEEE80211_DEBUG_DROP(
1041 "RX: dropped data frame "
1042 "with no data (type=0x%02x, "
1043 "subtype=0x%02x, len=%d)\n",
1044 type, stype, skb->len);
1045 goto rx_dropped;
1046 }
1047 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1048 goto rx_dropped;
1049
1050 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1051
1052 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1053 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1054 {
1055 printk("decrypt frame error\n");
1056 goto rx_dropped;
1057 }
1058
1059
1060 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1061
1062 /* skb: hdr + (possibly fragmented) plaintext payload */
1063 // PR: FIXME: hostap has additional conditions in the "if" below:
1064 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1065 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1066 int flen;
1067 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1068 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1069
1070 if (!frag_skb) {
1071 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1072 "Rx cannot get skb from fragment "
1073 "cache (morefrag=%d seq=%u frag=%u)\n",
1074 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1075 WLAN_GET_SEQ_SEQ(sc), frag);
1076 goto rx_dropped;
1077 }
1078 flen = skb->len;
1079 if (frag != 0)
1080 flen -= hdrlen;
1081
1082 if (frag_skb->tail + flen > frag_skb->end) {
1083 printk(KERN_WARNING "%s: host decrypted and "
1084 "reassembled frame did not fit skb\n",
1085 dev->name);
1086 ieee80211_frag_cache_invalidate(ieee, hdr);
1087 goto rx_dropped;
1088 }
1089
1090 if (frag == 0) {
1091 /* copy first fragment (including full headers) into
1092 * beginning of the fragment cache skb */
1093 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1094 } else {
1095 /* append frame payload to the end of the fragment
1096 * cache skb */
1097 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1098 flen);
1099 }
1100 dev_kfree_skb_any(skb);
1101 skb = NULL;
1102
1103 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1104 /* more fragments expected - leave the skb in fragment
1105 * cache for now; it will be delivered to upper layers
1106 * after all fragments have been received */
1107 goto rx_exit;
1108 }
1109
1110 /* this was the last fragment and the frame will be
1111 * delivered, so remove skb from fragment cache */
1112 skb = frag_skb;
1113 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1114 ieee80211_frag_cache_invalidate(ieee, hdr);
1115 }
1116
1117 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1118 * encrypted/authenticated */
1119 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1120 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1121 {
1122 printk("==>decrypt msdu error\n");
1123 goto rx_dropped;
1124 }
1125
1126 //added by amy for AP roaming
1127 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1128 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1129
1130 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1131 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1132 if (/*ieee->ieee802_1x &&*/
1133 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1134
1135 #ifdef CONFIG_IEEE80211_DEBUG
1136 /* pass unencrypted EAPOL frames even if encryption is
1137 * configured */
1138 struct eapol *eap = (struct eapol *)(skb->data +
1139 24);
1140 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1141 eap_get_type(eap->type));
1142 #endif
1143 } else {
1144 IEEE80211_DEBUG_DROP(
1145 "encryption configured, but RX "
1146 "frame not encrypted (SA=" MAC_FMT ")\n",
1147 MAC_ARG(hdr->addr2));
1148 goto rx_dropped;
1149 }
1150 }
1151
1152 #ifdef CONFIG_IEEE80211_DEBUG
1153 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1154 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1155 struct eapol *eap = (struct eapol *)(skb->data +
1156 24);
1157 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1158 eap_get_type(eap->type));
1159 }
1160 #endif
1161
1162 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1163 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1164 IEEE80211_DEBUG_DROP(
1165 "dropped unencrypted RX data "
1166 "frame from " MAC_FMT
1167 " (drop_unencrypted=1)\n",
1168 MAC_ARG(hdr->addr2));
1169 goto rx_dropped;
1170 }
1171 /*
1172 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1173 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1174 }
1175 */
1176 //added by amy for reorder
1177 #if 1
1178 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1179 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1180 {
1181 TID = Frame_QoSTID(skb->data);
1182 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1183 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1184 if(TID !=0 && TID !=3)
1185 {
1186 ieee->bis_any_nonbepkts = true;
1187 }
1188 }
1189 #endif
1190 //added by amy for reorder
1191 /* skb: hdr + (possible reassembled) full plaintext payload */
1192 payload = skb->data + hdrlen;
1193 //ethertype = (payload[6] << 8) | payload[7];
1194 rxb = (struct ieee80211_rxb*)kmalloc(sizeof(struct ieee80211_rxb),GFP_ATOMIC);
1195 if(rxb == NULL)
1196 {
1197 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1198 goto rx_dropped;
1199 }
1200 /* to parse amsdu packets */
1201 /* qos data packets & reserved bit is 1 */
1202 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) {
1203 /* only to free rxb, and not submit the packets to upper layer */
1204 for(i =0; i < rxb->nr_subframes; i++) {
1205 dev_kfree_skb(rxb->subframes[i]);
1206 }
1207 kfree(rxb);
1208 rxb = NULL;
1209 goto rx_dropped;
1210 }
1211
1212 ieee->last_rx_ps_time = jiffies;
1213 //added by amy for reorder
1214 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1215 //added by amy for reorder
1216 for(i = 0; i<rxb->nr_subframes; i++) {
1217 struct sk_buff *sub_skb = rxb->subframes[i];
1218
1219 if (sub_skb) {
1220 /* convert hdr + possible LLC headers into Ethernet header */
1221 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1222 if (sub_skb->len >= 8 &&
1223 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1224 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1225 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1226 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1227 * replace EtherType */
1228 skb_pull(sub_skb, SNAP_SIZE);
1229 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1230 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1231 } else {
1232 u16 len;
1233 /* Leave Ethernet header part of hdr and full payload */
1234 len = htons(sub_skb->len);
1235 memcpy(skb_push(sub_skb, 2), &len, 2);
1236 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1237 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1238 }
1239
1240 stats->rx_packets++;
1241 stats->rx_bytes += sub_skb->len;
1242 if(is_multicast_ether_addr(dst)) {
1243 stats->multicast++;
1244 }
1245
1246 /* Indicat the packets to upper layer */
1247 //printk("0skb_len(%d)\n", skb->len);
1248 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1249 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1250 sub_skb->dev = dev;
1251 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1252 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1253 //printk("1skb_len(%d)\n", skb->len);
1254 netif_rx(sub_skb);
1255 }
1256 }
1257 kfree(rxb);
1258 rxb = NULL;
1259
1260 }
1261 else
1262 {
1263 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1264 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1265 }
1266 #ifndef JOHN_NOCPY
1267 dev_kfree_skb(skb);
1268 #endif
1269
1270 rx_exit:
1271 return 1;
1272
1273 rx_dropped:
1274 if (rxb != NULL)
1275 {
1276 kfree(rxb);
1277 rxb = NULL;
1278 }
1279 stats->rx_dropped++;
1280
1281 /* Returning 0 indicates to caller that we have not handled the SKB--
1282 * so it is still allocated and can be used again by underlying
1283 * hardware as a DMA target */
1284 return 0;
1285 }
1286
1287 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1288
1289 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1290
1291 /*
1292 * Make ther structure we read from the beacon packet has
1293 * the right values
1294 */
1295 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1296 *info_element, int sub_type)
1297 {
1298
1299 if (info_element->qui_subtype != sub_type)
1300 return -1;
1301 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1302 return -1;
1303 if (info_element->qui_type != QOS_OUI_TYPE)
1304 return -1;
1305 if (info_element->version != QOS_VERSION_1)
1306 return -1;
1307
1308 return 0;
1309 }
1310
1311
1312 /*
1313 * Parse a QoS parameter element
1314 */
1315 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1316 *element_param, struct ieee80211_info_element
1317 *info_element)
1318 {
1319 int ret = 0;
1320 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1321
1322 if ((info_element == NULL) || (element_param == NULL))
1323 return -1;
1324
1325 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1326 memcpy(element_param->info_element.qui, info_element->data,
1327 info_element->len);
1328 element_param->info_element.elementID = info_element->id;
1329 element_param->info_element.length = info_element->len;
1330 } else
1331 ret = -1;
1332 if (ret == 0)
1333 ret = ieee80211_verify_qos_info(&element_param->info_element,
1334 QOS_OUI_PARAM_SUB_TYPE);
1335 return ret;
1336 }
1337
1338 /*
1339 * Parse a QoS information element
1340 */
1341 static int ieee80211_read_qos_info_element(struct
1342 ieee80211_qos_information_element
1343 *element_info, struct ieee80211_info_element
1344 *info_element)
1345 {
1346 int ret = 0;
1347 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1348
1349 if (element_info == NULL)
1350 return -1;
1351 if (info_element == NULL)
1352 return -1;
1353
1354 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1355 memcpy(element_info->qui, info_element->data,
1356 info_element->len);
1357 element_info->elementID = info_element->id;
1358 element_info->length = info_element->len;
1359 } else
1360 ret = -1;
1361
1362 if (ret == 0)
1363 ret = ieee80211_verify_qos_info(element_info,
1364 QOS_OUI_INFO_SUB_TYPE);
1365 return ret;
1366 }
1367
1368
1369 /*
1370 * Write QoS parameters from the ac parameters.
1371 */
1372 static int ieee80211_qos_convert_ac_to_parameters(struct
1373 ieee80211_qos_parameter_info
1374 *param_elm, struct
1375 ieee80211_qos_parameters
1376 *qos_param)
1377 {
1378 int rc = 0;
1379 int i;
1380 struct ieee80211_qos_ac_parameter *ac_params;
1381 u8 aci;
1382 //u8 cw_min;
1383 //u8 cw_max;
1384
1385 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1386 ac_params = &(param_elm->ac_params_record[i]);
1387
1388 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1389
1390 if(aci >= QOS_QUEUE_NUM)
1391 continue;
1392 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1393
1394 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1395 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1396
1397 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1398
1399 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1400
1401 qos_param->flag[aci] =
1402 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1403 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1404 }
1405 return rc;
1406 }
1407
1408 /*
1409 * we have a generic data element which it may contain QoS information or
1410 * parameters element. check the information element length to decide
1411 * which type to read
1412 */
1413 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1414 *info_element,
1415 struct ieee80211_network *network)
1416 {
1417 int rc = 0;
1418 struct ieee80211_qos_parameters *qos_param = NULL;
1419 struct ieee80211_qos_information_element qos_info_element;
1420
1421 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1422
1423 if (rc == 0) {
1424 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1425 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1426 } else {
1427 struct ieee80211_qos_parameter_info param_element;
1428
1429 rc = ieee80211_read_qos_param_element(&param_element,
1430 info_element);
1431 if (rc == 0) {
1432 qos_param = &(network->qos_data.parameters);
1433 ieee80211_qos_convert_ac_to_parameters(&param_element,
1434 qos_param);
1435 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1436 network->qos_data.param_count =
1437 param_element.info_element.ac_info & 0x0F;
1438 }
1439 }
1440
1441 if (rc == 0) {
1442 IEEE80211_DEBUG_QOS("QoS is supported\n");
1443 network->qos_data.supported = 1;
1444 }
1445 return rc;
1446 }
1447
1448 #ifdef CONFIG_IEEE80211_DEBUG
1449 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1450
1451 static const char *get_info_element_string(u16 id)
1452 {
1453 switch (id) {
1454 MFIE_STRING(SSID);
1455 MFIE_STRING(RATES);
1456 MFIE_STRING(FH_SET);
1457 MFIE_STRING(DS_SET);
1458 MFIE_STRING(CF_SET);
1459 MFIE_STRING(TIM);
1460 MFIE_STRING(IBSS_SET);
1461 MFIE_STRING(COUNTRY);
1462 MFIE_STRING(HOP_PARAMS);
1463 MFIE_STRING(HOP_TABLE);
1464 MFIE_STRING(REQUEST);
1465 MFIE_STRING(CHALLENGE);
1466 MFIE_STRING(POWER_CONSTRAINT);
1467 MFIE_STRING(POWER_CAPABILITY);
1468 MFIE_STRING(TPC_REQUEST);
1469 MFIE_STRING(TPC_REPORT);
1470 MFIE_STRING(SUPP_CHANNELS);
1471 MFIE_STRING(CSA);
1472 MFIE_STRING(MEASURE_REQUEST);
1473 MFIE_STRING(MEASURE_REPORT);
1474 MFIE_STRING(QUIET);
1475 MFIE_STRING(IBSS_DFS);
1476 // MFIE_STRING(ERP_INFO);
1477 MFIE_STRING(RSN);
1478 MFIE_STRING(RATES_EX);
1479 MFIE_STRING(GENERIC);
1480 MFIE_STRING(QOS_PARAMETER);
1481 default:
1482 return "UNKNOWN";
1483 }
1484 }
1485 #endif
1486
1487 static inline void ieee80211_extract_country_ie(
1488 struct ieee80211_device *ieee,
1489 struct ieee80211_info_element *info_element,
1490 struct ieee80211_network *network,
1491 u8 * addr2
1492 )
1493 {
1494 if(IS_DOT11D_ENABLE(ieee))
1495 {
1496 if(info_element->len!= 0)
1497 {
1498 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1499 network->CountryIeLen = info_element->len;
1500
1501 if(!IS_COUNTRY_IE_VALID(ieee))
1502 {
1503 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1504 }
1505 }
1506
1507 //
1508 // 070305, rcnjko: I update country IE watch dog here because
1509 // some AP (e.g. Cisco 1242) don't include country IE in their
1510 // probe response frame.
1511 //
1512 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1513 {
1514 UPDATE_CIE_WATCHDOG(ieee);
1515 }
1516 }
1517
1518 }
1519
1520 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1521 struct ieee80211_info_element *info_element,
1522 u16 length,
1523 struct ieee80211_network *network,
1524 struct ieee80211_rx_stats *stats)
1525 {
1526 u8 i;
1527 short offset;
1528 u16 tmp_htcap_len=0;
1529 u16 tmp_htinfo_len=0;
1530 u16 ht_realtek_agg_len=0;
1531 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1532 // u16 broadcom_len = 0;
1533 #ifdef CONFIG_IEEE80211_DEBUG
1534 char rates_str[64];
1535 char *p;
1536 #endif
1537
1538 while (length >= sizeof(*info_element)) {
1539 if (sizeof(*info_element) + info_element->len > length) {
1540 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1541 "info_element->len + 2 > left : "
1542 "info_element->len+2=%zd left=%d, id=%d.\n",
1543 info_element->len +
1544 sizeof(*info_element),
1545 length, info_element->id);
1546 /* We stop processing but don't return an error here
1547 * because some misbehaviour APs break this rule. ie.
1548 * Orinoco AP1000. */
1549 break;
1550 }
1551
1552 switch (info_element->id) {
1553 case MFIE_TYPE_SSID:
1554 if (ieee80211_is_empty_essid(info_element->data,
1555 info_element->len)) {
1556 network->flags |= NETWORK_EMPTY_ESSID;
1557 break;
1558 }
1559
1560 network->ssid_len = min(info_element->len,
1561 (u8) IW_ESSID_MAX_SIZE);
1562 memcpy(network->ssid, info_element->data, network->ssid_len);
1563 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1564 memset(network->ssid + network->ssid_len, 0,
1565 IW_ESSID_MAX_SIZE - network->ssid_len);
1566
1567 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1568 network->ssid, network->ssid_len);
1569 break;
1570
1571 case MFIE_TYPE_RATES:
1572 #ifdef CONFIG_IEEE80211_DEBUG
1573 p = rates_str;
1574 #endif
1575 network->rates_len = min(info_element->len,
1576 MAX_RATES_LENGTH);
1577 for (i = 0; i < network->rates_len; i++) {
1578 network->rates[i] = info_element->data[i];
1579 #ifdef CONFIG_IEEE80211_DEBUG
1580 p += snprintf(p, sizeof(rates_str) -
1581 (p - rates_str), "%02X ",
1582 network->rates[i]);
1583 #endif
1584 if (ieee80211_is_ofdm_rate
1585 (info_element->data[i])) {
1586 network->flags |= NETWORK_HAS_OFDM;
1587 if (info_element->data[i] &
1588 IEEE80211_BASIC_RATE_MASK)
1589 network->flags &=
1590 ~NETWORK_HAS_CCK;
1591 }
1592 }
1593
1594 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1595 rates_str, network->rates_len);
1596 break;
1597
1598 case MFIE_TYPE_RATES_EX:
1599 #ifdef CONFIG_IEEE80211_DEBUG
1600 p = rates_str;
1601 #endif
1602 network->rates_ex_len = min(info_element->len,
1603 MAX_RATES_EX_LENGTH);
1604 for (i = 0; i < network->rates_ex_len; i++) {
1605 network->rates_ex[i] = info_element->data[i];
1606 #ifdef CONFIG_IEEE80211_DEBUG
1607 p += snprintf(p, sizeof(rates_str) -
1608 (p - rates_str), "%02X ",
1609 network->rates[i]);
1610 #endif
1611 if (ieee80211_is_ofdm_rate
1612 (info_element->data[i])) {
1613 network->flags |= NETWORK_HAS_OFDM;
1614 if (info_element->data[i] &
1615 IEEE80211_BASIC_RATE_MASK)
1616 network->flags &=
1617 ~NETWORK_HAS_CCK;
1618 }
1619 }
1620
1621 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1622 rates_str, network->rates_ex_len);
1623 break;
1624
1625 case MFIE_TYPE_DS_SET:
1626 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1627 info_element->data[0]);
1628 network->channel = info_element->data[0];
1629 break;
1630
1631 case MFIE_TYPE_FH_SET:
1632 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1633 break;
1634
1635 case MFIE_TYPE_CF_SET:
1636 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1637 break;
1638
1639 case MFIE_TYPE_TIM:
1640 if(info_element->len < 4)
1641 break;
1642
1643 network->tim.tim_count = info_element->data[0];
1644 network->tim.tim_period = info_element->data[1];
1645
1646 network->dtim_period = info_element->data[1];
1647 if(ieee->state != IEEE80211_LINKED)
1648 break;
1649 //we use jiffies for legacy Power save
1650 network->last_dtim_sta_time[0] = jiffies;
1651 network->last_dtim_sta_time[1] = stats->mac_time[1];
1652
1653 network->dtim_data = IEEE80211_DTIM_VALID;
1654
1655 if(info_element->data[0] != 0)
1656 break;
1657
1658 if(info_element->data[2] & 1)
1659 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1660
1661 offset = (info_element->data[2] >> 1)*2;
1662
1663 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id);
1664
1665 if(ieee->assoc_id < 8*offset ||
1666 ieee->assoc_id > 8*(offset + info_element->len -3))
1667
1668 break;
1669
1670 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1671
1672 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1673 network->dtim_data |= IEEE80211_DTIM_UCAST;
1674
1675 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1676 break;
1677
1678 case MFIE_TYPE_ERP:
1679 network->erp_value = info_element->data[0];
1680 network->flags |= NETWORK_HAS_ERP_VALUE;
1681 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1682 network->erp_value);
1683 break;
1684 case MFIE_TYPE_IBSS_SET:
1685 network->atim_window = info_element->data[0];
1686 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1687 network->atim_window);
1688 break;
1689
1690 case MFIE_TYPE_CHALLENGE:
1691 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1692 break;
1693
1694 case MFIE_TYPE_GENERIC:
1695 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1696 info_element->len);
1697 if (!ieee80211_parse_qos_info_param_IE(info_element,
1698 network))
1699 break;
1700
1701 if (info_element->len >= 4 &&
1702 info_element->data[0] == 0x00 &&
1703 info_element->data[1] == 0x50 &&
1704 info_element->data[2] == 0xf2 &&
1705 info_element->data[3] == 0x01) {
1706 network->wpa_ie_len = min(info_element->len + 2,
1707 MAX_WPA_IE_LEN);
1708 memcpy(network->wpa_ie, info_element,
1709 network->wpa_ie_len);
1710 break;
1711 }
1712
1713 if (info_element->len == 7 &&
1714 info_element->data[0] == 0x00 &&
1715 info_element->data[1] == 0xe0 &&
1716 info_element->data[2] == 0x4c &&
1717 info_element->data[3] == 0x01 &&
1718 info_element->data[4] == 0x02) {
1719 network->Turbo_Enable = 1;
1720 }
1721
1722 //for HTcap and HTinfo parameters
1723 if(tmp_htcap_len == 0){
1724 if(info_element->len >= 4 &&
1725 info_element->data[0] == 0x00 &&
1726 info_element->data[1] == 0x90 &&
1727 info_element->data[2] == 0x4c &&
1728 info_element->data[3] == 0x033){
1729
1730 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1731 if(tmp_htcap_len != 0){
1732 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1733 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1734 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1735 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1736 }
1737 }
1738 if(tmp_htcap_len != 0){
1739 network->bssht.bdSupportHT = true;
1740 network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1741 }else{
1742 network->bssht.bdSupportHT = false;
1743 network->bssht.bdHT1R = false;
1744 }
1745 }
1746
1747
1748 if(tmp_htinfo_len == 0){
1749 if(info_element->len >= 4 &&
1750 info_element->data[0] == 0x00 &&
1751 info_element->data[1] == 0x90 &&
1752 info_element->data[2] == 0x4c &&
1753 info_element->data[3] == 0x034){
1754
1755 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1756 if(tmp_htinfo_len != 0){
1757 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1758 if(tmp_htinfo_len){
1759 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1760 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1761 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1762 }
1763
1764 }
1765
1766 }
1767 }
1768
1769 if(ieee->aggregation){
1770 if(network->bssht.bdSupportHT){
1771 if(info_element->len >= 4 &&
1772 info_element->data[0] == 0x00 &&
1773 info_element->data[1] == 0xe0 &&
1774 info_element->data[2] == 0x4c &&
1775 info_element->data[3] == 0x02){
1776
1777 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1778 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1779
1780 }
1781 if(ht_realtek_agg_len >= 5){
1782 network->realtek_cap_exit = true;
1783 network->bssht.bdRT2RTAggregation = true;
1784
1785 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1786 network->bssht.bdRT2RTLongSlotTime = true;
1787
1788 if((ht_realtek_agg_buf[4]==1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE))
1789 {
1790 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE;
1791 //bssDesc->Vender = HT_IOT_PEER_REALTEK_92SE;
1792 }
1793 }
1794 }
1795
1796 }
1797
1798 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1799 {
1800 if((info_element->len >= 3 &&
1801 info_element->data[0] == 0x00 &&
1802 info_element->data[1] == 0x05 &&
1803 info_element->data[2] == 0xb5) ||
1804 (info_element->len >= 3 &&
1805 info_element->data[0] == 0x00 &&
1806 info_element->data[1] == 0x0a &&
1807 info_element->data[2] == 0xf7) ||
1808 (info_element->len >= 3 &&
1809 info_element->data[0] == 0x00 &&
1810 info_element->data[1] == 0x10 &&
1811 info_element->data[2] == 0x18)){
1812
1813 network->broadcom_cap_exist = true;
1814
1815 }
1816 }
1817 if(info_element->len >= 3 &&
1818 info_element->data[0] == 0x00 &&
1819 info_element->data[1] == 0x0c &&
1820 info_element->data[2] == 0x43)
1821 {
1822 network->ralink_cap_exist = true;
1823 }
1824 else
1825 network->ralink_cap_exist = false;
1826 //added by amy for atheros AP
1827 if((info_element->len >= 3 &&
1828 info_element->data[0] == 0x00 &&
1829 info_element->data[1] == 0x03 &&
1830 info_element->data[2] == 0x7f) ||
1831 (info_element->len >= 3 &&
1832 info_element->data[0] == 0x00 &&
1833 info_element->data[1] == 0x13 &&
1834 info_element->data[2] == 0x74))
1835 {
1836 // printk("========>%s(): athros AP is exist\n",__FUNCTION__);
1837 network->atheros_cap_exist = true;
1838 }
1839 else
1840 network->atheros_cap_exist = false;
1841
1842 if ((info_element->len >= 3 &&
1843 info_element->data[0] == 0x00 &&
1844 info_element->data[1] == 0x50 &&
1845 info_element->data[2] == 0x43) )
1846 {
1847 network->marvell_cap_exist = true;
1848 }
1849 else
1850 network->marvell_cap_exist = false;
1851
1852 if(info_element->len >= 3 &&
1853 info_element->data[0] == 0x00 &&
1854 info_element->data[1] == 0x40 &&
1855 info_element->data[2] == 0x96)
1856 {
1857 network->cisco_cap_exist = true;
1858 }
1859 else
1860 network->cisco_cap_exist = false;
1861 //added by amy for LEAP of cisco
1862 if(info_element->len > 4 &&
1863 info_element->data[0] == 0x00 &&
1864 info_element->data[1] == 0x40 &&
1865 info_element->data[2] == 0x96 &&
1866 info_element->data[3] == 0x01)
1867 {
1868 if(info_element->len == 6)
1869 {
1870 memcpy(network->CcxRmState, &info_element[4], 2);
1871 if(network->CcxRmState[0] != 0)
1872 {
1873 network->bCcxRmEnable = true;
1874 }
1875 else
1876 network->bCcxRmEnable = false;
1877 //
1878 // CCXv4 Table 59-1 MBSSID Masks.
1879 //
1880 network->MBssidMask = network->CcxRmState[1] & 0x07;
1881 if(network->MBssidMask != 0)
1882 {
1883 network->bMBssidValid = true;
1884 network->MBssidMask = 0xff << (network->MBssidMask);
1885 cpMacAddr(network->MBssid, network->bssid);
1886 network->MBssid[5] &= network->MBssidMask;
1887 }
1888 else
1889 {
1890 network->bMBssidValid = false;
1891 }
1892 }
1893 else
1894 {
1895 network->bCcxRmEnable = false;
1896 }
1897 }
1898 if(info_element->len > 4 &&
1899 info_element->data[0] == 0x00 &&
1900 info_element->data[1] == 0x40 &&
1901 info_element->data[2] == 0x96 &&
1902 info_element->data[3] == 0x03)
1903 {
1904 if(info_element->len == 5)
1905 {
1906 network->bWithCcxVerNum = true;
1907 network->BssCcxVerNumber = info_element->data[4];
1908 }
1909 else
1910 {
1911 network->bWithCcxVerNum = false;
1912 network->BssCcxVerNumber = 0;
1913 }
1914 }
1915 break;
1916
1917 case MFIE_TYPE_RSN:
1918 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1919 info_element->len);
1920 network->rsn_ie_len = min(info_element->len + 2,
1921 MAX_WPA_IE_LEN);
1922 memcpy(network->rsn_ie, info_element,
1923 network->rsn_ie_len);
1924 break;
1925
1926 //HT related element.
1927 case MFIE_TYPE_HT_CAP:
1928 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1929 info_element->len);
1930 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1931 if(tmp_htcap_len != 0){
1932 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1933 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1934 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1935 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1936
1937 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
1938 // windows driver will update WMM parameters each beacon received once connected
1939 // Linux driver is a bit different.
1940 network->bssht.bdSupportHT = true;
1941 network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1942 }
1943 else{
1944 network->bssht.bdSupportHT = false;
1945 network->bssht.bdHT1R = false;
1946 }
1947 break;
1948
1949
1950 case MFIE_TYPE_HT_INFO:
1951 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
1952 info_element->len);
1953 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1954 if(tmp_htinfo_len){
1955 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
1956 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1957 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1958 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1959 }
1960 break;
1961
1962 case MFIE_TYPE_AIRONET:
1963 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
1964 info_element->len);
1965 if(info_element->len >IE_CISCO_FLAG_POSITION)
1966 {
1967 network->bWithAironetIE = true;
1968
1969 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
1970 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
1971 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
1972 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
1973 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
1974 {
1975 network->bCkipSupported = true;
1976 }
1977 else
1978 {
1979 network->bCkipSupported = false;
1980 }
1981 }
1982 else
1983 {
1984 network->bWithAironetIE = false;
1985 network->bCkipSupported = false;
1986 }
1987 break;
1988 case MFIE_TYPE_QOS_PARAMETER:
1989 printk(KERN_ERR
1990 "QoS Error need to parse QOS_PARAMETER IE\n");
1991 break;
1992
1993 case MFIE_TYPE_COUNTRY:
1994 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
1995 info_element->len);
1996 //printk("=====>Receive <%s> Country IE\n",network->ssid);
1997 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
1998 break;
1999 default:
2000 IEEE80211_DEBUG_MGMT
2001 ("Unsupported info element: %s (%d)\n",
2002 get_info_element_string(info_element->id),
2003 info_element->id);
2004 break;
2005 }
2006
2007 length -= sizeof(*info_element) + info_element->len;
2008 info_element =
2009 (struct ieee80211_info_element *)&info_element->
2010 data[info_element->len];
2011 }
2012
2013 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2014 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2015 {
2016 network->unknown_cap_exist = true;
2017 }
2018 else
2019 {
2020 network->unknown_cap_exist = false;
2021 }
2022 return 0;
2023 }
2024
2025 static inline u8 ieee80211_SignalStrengthTranslate(
2026 u8 CurrSS
2027 )
2028 {
2029 u8 RetSS;
2030
2031 // Step 1. Scale mapping.
2032 if(CurrSS >= 71 && CurrSS <= 100)
2033 {
2034 RetSS = 90 + ((CurrSS - 70) / 3);
2035 }
2036 else if(CurrSS >= 41 && CurrSS <= 70)
2037 {
2038 RetSS = 78 + ((CurrSS - 40) / 3);
2039 }
2040 else if(CurrSS >= 31 && CurrSS <= 40)
2041 {
2042 RetSS = 66 + (CurrSS - 30);
2043 }
2044 else if(CurrSS >= 21 && CurrSS <= 30)
2045 {
2046 RetSS = 54 + (CurrSS - 20);
2047 }
2048 else if(CurrSS >= 5 && CurrSS <= 20)
2049 {
2050 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2051 }
2052 else if(CurrSS == 4)
2053 {
2054 RetSS = 36;
2055 }
2056 else if(CurrSS == 3)
2057 {
2058 RetSS = 27;
2059 }
2060 else if(CurrSS == 2)
2061 {
2062 RetSS = 18;
2063 }
2064 else if(CurrSS == 1)
2065 {
2066 RetSS = 9;
2067 }
2068 else
2069 {
2070 RetSS = CurrSS;
2071 }
2072 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2073
2074 // Step 2. Smoothing.
2075
2076 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2077
2078 return RetSS;
2079 }
2080
2081 long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index.
2082 {
2083 long signal_power; // in dBm.
2084
2085 // Translate to dBm (x=0.5y-95).
2086 signal_power = (long)((signal_strength_index + 1) >> 1);
2087 signal_power -= 95;
2088
2089 return signal_power;
2090 }
2091
2092 static inline int ieee80211_network_init(
2093 struct ieee80211_device *ieee,
2094 struct ieee80211_probe_response *beacon,
2095 struct ieee80211_network *network,
2096 struct ieee80211_rx_stats *stats)
2097 {
2098 #ifdef CONFIG_IEEE80211_DEBUG
2099 //char rates_str[64];
2100 //char *p;
2101 #endif
2102
2103 network->qos_data.active = 0;
2104 network->qos_data.supported = 0;
2105 network->qos_data.param_count = 0;
2106 network->qos_data.old_param_count = 0;
2107
2108 /* Pull out fixed field data */
2109 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2110 network->capability = le16_to_cpu(beacon->capability);
2111 network->last_scanned = jiffies;
2112 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2113 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2114 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2115 /* Where to pull this? beacon->listen_interval;*/
2116 network->listen_interval = 0x0A;
2117 network->rates_len = network->rates_ex_len = 0;
2118 network->last_associate = 0;
2119 network->ssid_len = 0;
2120 network->flags = 0;
2121 network->atim_window = 0;
2122 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2123 0x3 : 0x0;
2124 network->berp_info_valid = false;
2125 network->broadcom_cap_exist = false;
2126 network->ralink_cap_exist = false;
2127 network->atheros_cap_exist = false;
2128 network->cisco_cap_exist = false;
2129 network->unknown_cap_exist = false;
2130 network->realtek_cap_exit = false;
2131 network->marvell_cap_exist = false;
2132 network->Turbo_Enable = 0;
2133 network->CountryIeLen = 0;
2134 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2135 //Initialize HT parameters
2136 //ieee80211_ht_initialize(&network->bssht);
2137 HTInitializeBssDesc(&network->bssht);
2138 if (stats->freq == IEEE80211_52GHZ_BAND) {
2139 /* for A band (No DS info) */
2140 network->channel = stats->received_channel;
2141 } else
2142 network->flags |= NETWORK_HAS_CCK;
2143
2144 network->wpa_ie_len = 0;
2145 network->rsn_ie_len = 0;
2146
2147 if (ieee80211_parse_info_param
2148 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2149 return 1;
2150
2151 network->mode = 0;
2152 if (stats->freq == IEEE80211_52GHZ_BAND)
2153 network->mode = IEEE_A;
2154 else {
2155 if (network->flags & NETWORK_HAS_OFDM)
2156 network->mode |= IEEE_G;
2157 if (network->flags & NETWORK_HAS_CCK)
2158 network->mode |= IEEE_B;
2159 }
2160
2161 if (network->mode == 0) {
2162 IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
2163 "network.\n",
2164 escape_essid(network->ssid,
2165 network->ssid_len),
2166 MAC_ARG(network->bssid));
2167 return 1;
2168 }
2169
2170 if(network->bssht.bdSupportHT){
2171 if(network->mode == IEEE_A)
2172 network->mode = IEEE_N_5G;
2173 else if(network->mode & (IEEE_G | IEEE_B))
2174 network->mode = IEEE_N_24G;
2175 }
2176 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2177 network->flags |= NETWORK_EMPTY_ESSID;
2178
2179 #if 1
2180 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2181 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2182 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2183 #endif
2184
2185 memcpy(&network->stats, stats, sizeof(network->stats));
2186
2187 return 0;
2188 }
2189
2190 static inline int is_same_network(struct ieee80211_network *src,
2191 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2192 {
2193 /* A network is only a duplicate if the channel, BSSID, ESSID
2194 * and the capability field (in particular IBSS and BSS) all match.
2195 * We treat all <hidden> with the same BSSID and channel
2196 * as one network */
2197 return //((src->ssid_len == dst->ssid_len) &&
2198 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2199 (src->channel == dst->channel) &&
2200 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2201 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2202 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2203 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2204 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2205 ((src->capability & WLAN_CAPABILITY_BSS) ==
2206 (dst->capability & WLAN_CAPABILITY_BSS)));
2207 }
2208
2209 static inline void update_network(struct ieee80211_network *dst,
2210 struct ieee80211_network *src)
2211 {
2212 int qos_active;
2213 u8 old_param;
2214
2215 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2216 dst->capability = src->capability;
2217 memcpy(dst->rates, src->rates, src->rates_len);
2218 dst->rates_len = src->rates_len;
2219 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2220 dst->rates_ex_len = src->rates_ex_len;
2221 if(src->ssid_len > 0)
2222 {
2223 memset(dst->ssid, 0, dst->ssid_len);
2224 dst->ssid_len = src->ssid_len;
2225 memcpy(dst->ssid, src->ssid, src->ssid_len);
2226 }
2227 dst->mode = src->mode;
2228 dst->flags = src->flags;
2229 dst->time_stamp[0] = src->time_stamp[0];
2230 dst->time_stamp[1] = src->time_stamp[1];
2231 if (src->flags & NETWORK_HAS_ERP_VALUE)
2232 {
2233 dst->erp_value = src->erp_value;
2234 dst->berp_info_valid = src->berp_info_valid = true;
2235 }
2236 dst->beacon_interval = src->beacon_interval;
2237 dst->listen_interval = src->listen_interval;
2238 dst->atim_window = src->atim_window;
2239 dst->dtim_period = src->dtim_period;
2240 dst->dtim_data = src->dtim_data;
2241 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2242 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2243 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2244
2245 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2246 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2247 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2248 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2249 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2250 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2251 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2252 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2253 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2254 dst->ralink_cap_exist = src->ralink_cap_exist;
2255 dst->atheros_cap_exist = src->atheros_cap_exist;
2256 dst->realtek_cap_exit = src->realtek_cap_exit;
2257 dst->marvell_cap_exist = src->marvell_cap_exist;
2258 dst->cisco_cap_exist = src->cisco_cap_exist;
2259 dst->unknown_cap_exist = src->unknown_cap_exist;
2260 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2261 dst->wpa_ie_len = src->wpa_ie_len;
2262 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2263 dst->rsn_ie_len = src->rsn_ie_len;
2264
2265 dst->last_scanned = jiffies;
2266 /* qos related parameters */
2267 //qos_active = src->qos_data.active;
2268 qos_active = dst->qos_data.active;
2269 //old_param = dst->qos_data.old_param_count;
2270 old_param = dst->qos_data.param_count;
2271 if(dst->flags & NETWORK_HAS_QOS_MASK){
2272 //not update QOS paramter in beacon, as most AP will set all these parameter to 0.//WB
2273 // printk("====>%s(), aifs:%x, %x\n", __FUNCTION__, dst->qos_data.parameters.aifs[0], src->qos_data.parameters.aifs[0]);
2274 // memcpy(&dst->qos_data, &src->qos_data,
2275 // sizeof(struct ieee80211_qos_data));
2276 }
2277 else {
2278 dst->qos_data.supported = src->qos_data.supported;
2279 dst->qos_data.param_count = src->qos_data.param_count;
2280 }
2281
2282 if(dst->qos_data.supported == 1) {
2283 dst->QoS_Enable = 1;
2284 if(dst->ssid_len)
2285 IEEE80211_DEBUG_QOS
2286 ("QoS the network %s is QoS supported\n",
2287 dst->ssid);
2288 else
2289 IEEE80211_DEBUG_QOS
2290 ("QoS the network is QoS supported\n");
2291 }
2292 dst->qos_data.active = qos_active;
2293 dst->qos_data.old_param_count = old_param;
2294
2295 /* dst->last_associate is not overwritten */
2296 #if 1
2297 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2298 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2299 src->wmm_param[1].ac_aci_acm_aifsn|| \
2300 src->wmm_param[2].ac_aci_acm_aifsn|| \
2301 src->wmm_param[1].ac_aci_acm_aifsn) {
2302 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2303 }
2304 //dst->QoS_Enable = src->QoS_Enable;
2305 #else
2306 dst->QoS_Enable = 1;//for Rtl8187 simulation
2307 #endif
2308 dst->Turbo_Enable = src->Turbo_Enable;
2309
2310 dst->CountryIeLen = src->CountryIeLen;
2311 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2312
2313 //added by amy for LEAP
2314 dst->bWithAironetIE = src->bWithAironetIE;
2315 dst->bCkipSupported = src->bCkipSupported;
2316 memcpy(dst->CcxRmState,src->CcxRmState,2);
2317 dst->bCcxRmEnable = src->bCcxRmEnable;
2318 dst->MBssidMask = src->MBssidMask;
2319 dst->bMBssidValid = src->bMBssidValid;
2320 memcpy(dst->MBssid,src->MBssid,6);
2321 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2322 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2323
2324 }
2325
2326 static inline int is_beacon(__le16 fc)
2327 {
2328 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2329 }
2330
2331 static inline void ieee80211_process_probe_response(
2332 struct ieee80211_device *ieee,
2333 struct ieee80211_probe_response *beacon,
2334 struct ieee80211_rx_stats *stats)
2335 {
2336 struct ieee80211_network network;
2337 struct ieee80211_network *target;
2338 struct ieee80211_network *oldest = NULL;
2339 #ifdef CONFIG_IEEE80211_DEBUG
2340 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2341 #endif
2342 unsigned long flags;
2343 short renew;
2344 //u8 wmm_info;
2345
2346 memset(&network, 0, sizeof(struct ieee80211_network));
2347 IEEE80211_DEBUG_SCAN(
2348 "'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2349 escape_essid(info_element->data, info_element->len),
2350 MAC_ARG(beacon->header.addr3),
2351 (beacon->capability & (1<<0xf)) ? '1' : '0',
2352 (beacon->capability & (1<<0xe)) ? '1' : '0',
2353 (beacon->capability & (1<<0xd)) ? '1' : '0',
2354 (beacon->capability & (1<<0xc)) ? '1' : '0',
2355 (beacon->capability & (1<<0xb)) ? '1' : '0',
2356 (beacon->capability & (1<<0xa)) ? '1' : '0',
2357 (beacon->capability & (1<<0x9)) ? '1' : '0',
2358 (beacon->capability & (1<<0x8)) ? '1' : '0',
2359 (beacon->capability & (1<<0x7)) ? '1' : '0',
2360 (beacon->capability & (1<<0x6)) ? '1' : '0',
2361 (beacon->capability & (1<<0x5)) ? '1' : '0',
2362 (beacon->capability & (1<<0x4)) ? '1' : '0',
2363 (beacon->capability & (1<<0x3)) ? '1' : '0',
2364 (beacon->capability & (1<<0x2)) ? '1' : '0',
2365 (beacon->capability & (1<<0x1)) ? '1' : '0',
2366 (beacon->capability & (1<<0x0)) ? '1' : '0');
2367
2368 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2369 IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
2370 escape_essid(info_element->data,
2371 info_element->len),
2372 MAC_ARG(beacon->header.addr3),
2373 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2374 IEEE80211_STYPE_PROBE_RESP ?
2375 "PROBE RESPONSE" : "BEACON");
2376 return;
2377 }
2378
2379 // For Asus EeePc request,
2380 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2381 // wireless adapter should follow the country code.
2382 // (2) If there is no any country code in beacon,
2383 // then wireless adapter should do active scan from ch1~11 and
2384 // passive scan from ch12~14
2385
2386 if( !IsLegalChannel(ieee, network.channel) )
2387 return;
2388 if(ieee->bGlobalDomain)
2389 {
2390 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2391 {
2392 // Case 1: Country code
2393 if(IS_COUNTRY_IE_VALID(ieee) )
2394 {
2395 if( !IsLegalChannel(ieee, network.channel) )
2396 {
2397 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2398 return;
2399 }
2400 }
2401 // Case 2: No any country code.
2402 else
2403 {
2404 // Filter over channel ch12~14
2405 if(network.channel > 11)
2406 {
2407 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2408 return;
2409 }
2410 }
2411 }
2412 else
2413 {
2414 // Case 1: Country code
2415 if(IS_COUNTRY_IE_VALID(ieee) )
2416 {
2417 if( !IsLegalChannel(ieee, network.channel) )
2418 {
2419 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2420 return;
2421 }
2422 }
2423 // Case 2: No any country code.
2424 else
2425 {
2426 // Filter over channel ch12~14
2427 if(network.channel > 14)
2428 {
2429 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2430 return;
2431 }
2432 }
2433 }
2434 }
2435
2436 /* The network parsed correctly -- so now we scan our known networks
2437 * to see if we can find it in our list.
2438 *
2439 * NOTE: This search is definitely not optimized. Once its doing
2440 * the "right thing" we'll optimize it for efficiency if
2441 * necessary */
2442
2443 /* Search for this entry in the list and update it if it is
2444 * already there. */
2445
2446 spin_lock_irqsave(&ieee->lock, flags);
2447
2448 if(is_same_network(&ieee->current_network, &network, ieee)) {
2449 update_network(&ieee->current_network, &network);
2450 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2451 && ieee->current_network.berp_info_valid){
2452 if(ieee->current_network.erp_value& ERP_UseProtection)
2453 ieee->current_network.buseprotection = true;
2454 else
2455 ieee->current_network.buseprotection = false;
2456 }
2457 if(is_beacon(beacon->header.frame_ctl))
2458 {
2459 if(ieee->state == IEEE80211_LINKED)
2460 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2461 }
2462 else //hidden AP
2463 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2464 }
2465
2466 list_for_each_entry(target, &ieee->network_list, list) {
2467 if (is_same_network(target, &network, ieee))
2468 break;
2469 if ((oldest == NULL) ||
2470 (target->last_scanned < oldest->last_scanned))
2471 oldest = target;
2472 }
2473
2474 /* If we didn't find a match, then get a new network slot to initialize
2475 * with this beacon's information */
2476 if (&target->list == &ieee->network_list) {
2477 if (list_empty(&ieee->network_free_list)) {
2478 /* If there are no more slots, expire the oldest */
2479 list_del(&oldest->list);
2480 target = oldest;
2481 IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
2482 "network list.\n",
2483 escape_essid(target->ssid,
2484 target->ssid_len),
2485 MAC_ARG(target->bssid));
2486 } else {
2487 /* Otherwise just pull from the free list */
2488 target = list_entry(ieee->network_free_list.next,
2489 struct ieee80211_network, list);
2490 list_del(ieee->network_free_list.next);
2491 }
2492
2493
2494 #ifdef CONFIG_IEEE80211_DEBUG
2495 IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
2496 escape_essid(network.ssid,
2497 network.ssid_len),
2498 MAC_ARG(network.bssid),
2499 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2500 IEEE80211_STYPE_PROBE_RESP ?
2501 "PROBE RESPONSE" : "BEACON");
2502 #endif
2503 memcpy(target, &network, sizeof(*target));
2504 list_add_tail(&target->list, &ieee->network_list);
2505 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2506 ieee80211_softmac_new_net(ieee,&network);
2507 } else {
2508 IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
2509 escape_essid(target->ssid,
2510 target->ssid_len),
2511 MAC_ARG(target->bssid),
2512 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2513 IEEE80211_STYPE_PROBE_RESP ?
2514 "PROBE RESPONSE" : "BEACON");
2515
2516 /* we have an entry and we are going to update it. But this entry may
2517 * be already expired. In this case we do the same as we found a new
2518 * net and call the new_net handler
2519 */
2520 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2521 //YJ,add,080819,for hidden ap
2522 if(is_beacon(beacon->header.frame_ctl) == 0)
2523 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2524 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2525 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2526 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2527 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2528 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2529 renew = 1;
2530 //YJ,add,080819,for hidden ap,end
2531
2532 update_network(target, &network);
2533 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2534 ieee80211_softmac_new_net(ieee,&network);
2535 }
2536
2537 spin_unlock_irqrestore(&ieee->lock, flags);
2538 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2539 (ieee->state == IEEE80211_LINKED)) {
2540 if(ieee->handle_beacon != NULL) {
2541 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2542 }
2543 }
2544 }
2545
2546 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2547 struct ieee80211_hdr_4addr *header,
2548 struct ieee80211_rx_stats *stats)
2549 {
2550 if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
2551 ieee->iw_mode == IW_MODE_INFRA &&
2552 ieee->state == IEEE80211_LINKED))
2553 {
2554 tasklet_schedule(&ieee->ps_task);
2555 }
2556
2557 if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP &&
2558 WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON)
2559 ieee->last_rx_ps_time = jiffies;
2560
2561 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2562
2563 case IEEE80211_STYPE_BEACON:
2564 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2565 WLAN_FC_GET_STYPE(header->frame_ctl));
2566 IEEE80211_DEBUG_SCAN("Beacon\n");
2567 ieee80211_process_probe_response(
2568 ieee, (struct ieee80211_probe_response *)header, stats);
2569 break;
2570
2571 case IEEE80211_STYPE_PROBE_RESP:
2572 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2573 WLAN_FC_GET_STYPE(header->frame_ctl));
2574 IEEE80211_DEBUG_SCAN("Probe response\n");
2575 ieee80211_process_probe_response(
2576 ieee, (struct ieee80211_probe_response *)header, stats);
2577 break;
2578
2579 }
2580 }
kernel source for telekom puls (alcatel/mediatek)