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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / staging / rtl8192u / ieee80211 / ieee80211_rx.c
blob8f93ef08d74de398c96c3e49ccaceb9bb10b1fee
1 /*
2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
4 *
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * <jkmaline@cc.hut.fi>
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
13 * more details.
14 ******************************************************************************
15
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
18
19 A special thanks goes to Realtek for their support !
20
21 ******************************************************************************/
22
23
24 #include <linux/compiler.h>
25 //#include <linux/config.h>
26 #include <linux/errno.h>
27 #include <linux/if_arp.h>
28 #include <linux/in6.h>
29 #include <linux/in.h>
30 #include <linux/ip.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/netdevice.h>
34 #include <linux/pci.h>
35 #include <linux/proc_fs.h>
36 #include <linux/skbuff.h>
37 #include <linux/slab.h>
38 #include <linux/tcp.h>
39 #include <linux/types.h>
40 #include <linux/version.h>
41 #include <linux/wireless.h>
42 #include <linux/etherdevice.h>
43 #include <asm/uaccess.h>
44 #include <linux/ctype.h>
45
46 #include "ieee80211.h"
47 #ifdef ENABLE_DOT11D
48 #include "dot11d.h"
49 #endif
50 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
51 struct sk_buff *skb,
52 struct ieee80211_rx_stats *rx_stats)
53 {
54 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
55 u16 fc = le16_to_cpu(hdr->frame_ctl);
56
57 skb->dev = ieee->dev;
58 skb_reset_mac_header(skb);
59
60 skb_pull(skb, ieee80211_get_hdrlen(fc));
61 skb->pkt_type = PACKET_OTHERHOST;
62 skb->protocol = __constant_htons(ETH_P_80211_RAW);
63 memset(skb->cb, 0, sizeof(skb->cb));
64 netif_rx(skb);
65 }
66
67
68 /* Called only as a tasklet (software IRQ) */
69 static struct ieee80211_frag_entry *
70 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
71 unsigned int frag, u8 tid,u8 *src, u8 *dst)
72 {
73 struct ieee80211_frag_entry *entry;
74 int i;
75
76 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
77 entry = &ieee->frag_cache[tid][i];
78 if (entry->skb != NULL &&
79 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
80 IEEE80211_DEBUG_FRAG(
81 "expiring fragment cache entry "
82 "seq=%u last_frag=%u\n",
83 entry->seq, entry->last_frag);
84 dev_kfree_skb_any(entry->skb);
85 entry->skb = NULL;
86 }
87
88 if (entry->skb != NULL && entry->seq == seq &&
89 (entry->last_frag + 1 == frag || frag == -1) &&
90 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
91 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
92 return entry;
93 }
94
95 return NULL;
96 }
97
98 /* Called only as a tasklet (software IRQ) */
99 static struct sk_buff *
100 ieee80211_frag_cache_get(struct ieee80211_device *ieee,
101 struct ieee80211_hdr_4addr *hdr)
102 {
103 struct sk_buff *skb = NULL;
104 u16 fc = le16_to_cpu(hdr->frame_ctl);
105 u16 sc = le16_to_cpu(hdr->seq_ctl);
106 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
107 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
108 struct ieee80211_frag_entry *entry;
109 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
110 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
111 u8 tid;
112
113 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
114 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
115 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
116 tid = UP2AC(tid);
117 tid ++;
118 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
119 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
120 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
121 tid = UP2AC(tid);
122 tid ++;
123 } else {
124 tid = 0;
125 }
126
127 if (frag == 0) {
128 /* Reserve enough space to fit maximum frame length */
129 skb = dev_alloc_skb(ieee->dev->mtu +
130 sizeof(struct ieee80211_hdr_4addr) +
131 8 /* LLC */ +
132 2 /* alignment */ +
133 8 /* WEP */ +
134 ETH_ALEN /* WDS */ +
135 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
136 if (skb == NULL)
137 return NULL;
138
139 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
140 ieee->frag_next_idx[tid]++;
141 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
142 ieee->frag_next_idx[tid] = 0;
143
144 if (entry->skb != NULL)
145 dev_kfree_skb_any(entry->skb);
146
147 entry->first_frag_time = jiffies;
148 entry->seq = seq;
149 entry->last_frag = frag;
150 entry->skb = skb;
151 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
152 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
153 } else {
154 /* received a fragment of a frame for which the head fragment
155 * should have already been received */
156 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
157 hdr->addr1);
158 if (entry != NULL) {
159 entry->last_frag = frag;
160 skb = entry->skb;
161 }
162 }
163
164 return skb;
165 }
166
167
168 /* Called only as a tasklet (software IRQ) */
169 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
170 struct ieee80211_hdr_4addr *hdr)
171 {
172 u16 fc = le16_to_cpu(hdr->frame_ctl);
173 u16 sc = le16_to_cpu(hdr->seq_ctl);
174 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
175 struct ieee80211_frag_entry *entry;
176 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
177 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
178 u8 tid;
179
180 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
181 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
182 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
183 tid = UP2AC(tid);
184 tid ++;
185 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
186 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
187 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
188 tid = UP2AC(tid);
189 tid ++;
190 } else {
191 tid = 0;
192 }
193
194 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
195 hdr->addr1);
196
197 if (entry == NULL) {
198 IEEE80211_DEBUG_FRAG(
199 "could not invalidate fragment cache "
200 "entry (seq=%u)\n", seq);
201 return -1;
202 }
203
204 entry->skb = NULL;
205 return 0;
206 }
207
208
209
210 /* ieee80211_rx_frame_mgtmt
211 *
212 * Responsible for handling management control frames
213 *
214 * Called by ieee80211_rx */
215 static inline int
216 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
217 struct ieee80211_rx_stats *rx_stats, u16 type,
218 u16 stype)
219 {
220 /* On the struct stats definition there is written that
221 * this is not mandatory.... but seems that the probe
222 * response parser uses it
223 */
224 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
225
226 rx_stats->len = skb->len;
227 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
228 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN)))
229 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames
230 {
231 dev_kfree_skb_any(skb);
232 return 0;
233 }
234
235 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
236
237 dev_kfree_skb_any(skb);
238
239 return 0;
240
241 #ifdef NOT_YET
242 if (ieee->iw_mode == IW_MODE_MASTER) {
243 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
244 ieee->dev->name);
245 return 0;
246 /*
247 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
248 skb->data);*/
249 }
250
251 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
252 if (stype == WLAN_FC_STYPE_BEACON &&
253 ieee->iw_mode == IW_MODE_MASTER) {
254 struct sk_buff *skb2;
255 /* Process beacon frames also in kernel driver to
256 * update STA(AP) table statistics */
257 skb2 = skb_clone(skb, GFP_ATOMIC);
258 if (skb2)
259 hostap_rx(skb2->dev, skb2, rx_stats);
260 }
261
262 /* send management frames to the user space daemon for
263 * processing */
264 ieee->apdevstats.rx_packets++;
265 ieee->apdevstats.rx_bytes += skb->len;
266 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
267 return 0;
268 }
269
270 if (ieee->iw_mode == IW_MODE_MASTER) {
271 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
272 printk(KERN_DEBUG "%s: unknown management frame "
273 "(type=0x%02x, stype=0x%02x) dropped\n",
274 skb->dev->name, type, stype);
275 return -1;
276 }
277
278 hostap_rx(skb->dev, skb, rx_stats);
279 return 0;
280 }
281
282 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
283 "received in non-Host AP mode\n", skb->dev->name);
284 return -1;
285 #endif
286 }
287
288
289
290 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
291 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
292 static unsigned char rfc1042_header[] =
293 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
294 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
295 static unsigned char bridge_tunnel_header[] =
296 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
297 /* No encapsulation header if EtherType < 0x600 (=length) */
298
299 /* Called by ieee80211_rx_frame_decrypt */
300 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
301 struct sk_buff *skb, size_t hdrlen)
302 {
303 struct net_device *dev = ieee->dev;
304 u16 fc, ethertype;
305 struct ieee80211_hdr_4addr *hdr;
306 u8 *pos;
307
308 if (skb->len < 24)
309 return 0;
310
311 hdr = (struct ieee80211_hdr_4addr *) skb->data;
312 fc = le16_to_cpu(hdr->frame_ctl);
313
314 /* check that the frame is unicast frame to us */
315 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
316 IEEE80211_FCTL_TODS &&
317 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
318 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
319 /* ToDS frame with own addr BSSID and DA */
320 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
321 IEEE80211_FCTL_FROMDS &&
322 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
323 /* FromDS frame with own addr as DA */
324 } else
325 return 0;
326
327 if (skb->len < 24 + 8)
328 return 0;
329
330 /* check for port access entity Ethernet type */
331 // pos = skb->data + 24;
332 pos = skb->data + hdrlen;
333 ethertype = (pos[6] << 8) | pos[7];
334 if (ethertype == ETH_P_PAE)
335 return 1;
336
337 return 0;
338 }
339
340 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
341 static inline int
342 ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
343 struct ieee80211_crypt_data *crypt)
344 {
345 struct ieee80211_hdr_4addr *hdr;
346 int res, hdrlen;
347
348 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
349 return 0;
350 if (ieee->hwsec_active)
351 {
352 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
353 tcb_desc->bHwSec = 1;
354 }
355 hdr = (struct ieee80211_hdr_4addr *) skb->data;
356 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
357
358 #ifdef CONFIG_IEEE80211_CRYPT_TKIP
359 if (ieee->tkip_countermeasures &&
360 strcmp(crypt->ops->name, "TKIP") == 0) {
361 if (net_ratelimit()) {
362 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
363 "received packet from %pM\n",
364 ieee->dev->name, hdr->addr2);
365 }
366 return -1;
367 }
368 #endif
369
370 atomic_inc(&crypt->refcnt);
371 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
372 atomic_dec(&crypt->refcnt);
373 if (res < 0) {
374 IEEE80211_DEBUG_DROP(
375 "decryption failed (SA=%pM"
376 ") res=%d\n", hdr->addr2, res);
377 if (res == -2)
378 IEEE80211_DEBUG_DROP("Decryption failed ICV "
379 "mismatch (key %d)\n",
380 skb->data[hdrlen + 3] >> 6);
381 ieee->ieee_stats.rx_discards_undecryptable++;
382 return -1;
383 }
384
385 return res;
386 }
387
388
389 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
390 static inline int
391 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
392 int keyidx, struct ieee80211_crypt_data *crypt)
393 {
394 struct ieee80211_hdr_4addr *hdr;
395 int res, hdrlen;
396
397 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
398 return 0;
399 if (ieee->hwsec_active)
400 {
401 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
402 tcb_desc->bHwSec = 1;
403 }
404
405 hdr = (struct ieee80211_hdr_4addr *) skb->data;
406 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
407
408 atomic_inc(&crypt->refcnt);
409 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
410 atomic_dec(&crypt->refcnt);
411 if (res < 0) {
412 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
413 " (SA=%pM keyidx=%d)\n",
414 ieee->dev->name, hdr->addr2, keyidx);
415 return -1;
416 }
417
418 return 0;
419 }
420
421
422 /* this function is stolen from ipw2200 driver*/
423 #define IEEE_PACKET_RETRY_TIME (5*HZ)
424 static int is_duplicate_packet(struct ieee80211_device *ieee,
425 struct ieee80211_hdr_4addr *header)
426 {
427 u16 fc = le16_to_cpu(header->frame_ctl);
428 u16 sc = le16_to_cpu(header->seq_ctl);
429 u16 seq = WLAN_GET_SEQ_SEQ(sc);
430 u16 frag = WLAN_GET_SEQ_FRAG(sc);
431 u16 *last_seq, *last_frag;
432 unsigned long *last_time;
433 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
434 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
435 u8 tid;
436
437
438 //TO2DS and QoS
439 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
440 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
441 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
442 tid = UP2AC(tid);
443 tid ++;
444 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
445 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
446 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
447 tid = UP2AC(tid);
448 tid ++;
449 } else { // no QoS
450 tid = 0;
451 }
452
453 switch (ieee->iw_mode) {
454 case IW_MODE_ADHOC:
455 {
456 struct list_head *p;
457 struct ieee_ibss_seq *entry = NULL;
458 u8 *mac = header->addr2;
459 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
460 //for (pos = (head)->next; pos != (head); pos = pos->next)
461 //__list_for_each(p, &ieee->ibss_mac_hash[index]) {
462 list_for_each(p, &ieee->ibss_mac_hash[index]) {
463 entry = list_entry(p, struct ieee_ibss_seq, list);
464 if (!memcmp(entry->mac, mac, ETH_ALEN))
465 break;
466 }
467 // if (memcmp(entry->mac, mac, ETH_ALEN)){
468 if (p == &ieee->ibss_mac_hash[index]) {
469 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
470 if (!entry) {
471 printk(KERN_WARNING "Cannot malloc new mac entry\n");
472 return 0;
473 }
474 memcpy(entry->mac, mac, ETH_ALEN);
475 entry->seq_num[tid] = seq;
476 entry->frag_num[tid] = frag;
477 entry->packet_time[tid] = jiffies;
478 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
479 return 0;
480 }
481 last_seq = &entry->seq_num[tid];
482 last_frag = &entry->frag_num[tid];
483 last_time = &entry->packet_time[tid];
484 break;
485 }
486
487 case IW_MODE_INFRA:
488 last_seq = &ieee->last_rxseq_num[tid];
489 last_frag = &ieee->last_rxfrag_num[tid];
490 last_time = &ieee->last_packet_time[tid];
491
492 break;
493 default:
494 return 0;
495 }
496
497 // if(tid != 0) {
498 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
499 // }
500 if ((*last_seq == seq) &&
501 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
502 if (*last_frag == frag){
503 //printk(KERN_WARNING "[1] go drop!\n");
504 goto drop;
505
506 }
507 if (*last_frag + 1 != frag)
508 /* out-of-order fragment */
509 //printk(KERN_WARNING "[2] go drop!\n");
510 goto drop;
511 } else
512 *last_seq = seq;
513
514 *last_frag = frag;
515 *last_time = jiffies;
516 return 0;
517
518 drop:
519 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
520 // printk("DUP\n");
521
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 while(pList->next != &pTS->RxPendingPktList)
532 {
533 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
534 {
535 pList = pList->next;
536 }
537 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
538 {
539 return false;
540 }
541 else
542 {
543 break;
544 }
545 }
546 pReorderEntry->List.next = pList->next;
547 pReorderEntry->List.next->prev = &pReorderEntry->List;
548 pReorderEntry->List.prev = pList;
549 pList->next = &pReorderEntry->List;
550
551 return true;
552 }
553
554 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
555 {
556 u8 i = 0 , j=0;
557 u16 ethertype;
558 // if(index > 1)
559 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index);
560 for(j = 0; j<index; j++)
561 {
562 //added by amy for reorder
563 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
564 for(i = 0; i<prxb->nr_subframes; i++) {
565 struct sk_buff *sub_skb = prxb->subframes[i];
566
567 /* convert hdr + possible LLC headers into Ethernet header */
568 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
569 if (sub_skb->len >= 8 &&
570 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
571 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
572 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
573 /* remove RFC1042 or Bridge-Tunnel encapsulation and
574 * replace EtherType */
575 skb_pull(sub_skb, SNAP_SIZE);
576 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
577 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
578 } else {
579 u16 len;
580 /* Leave Ethernet header part of hdr and full payload */
581 len = htons(sub_skb->len);
582 memcpy(skb_push(sub_skb, 2), &len, 2);
583 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
584 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
585 }
586 //stats->rx_packets++;
587 //stats->rx_bytes += sub_skb->len;
588
589 /* Indicat the packets to upper layer */
590 if (sub_skb) {
591 //printk("0skb_len(%d)\n", skb->len);
592 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
593 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
594 sub_skb->dev = ieee->dev;
595 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
596 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
597 ieee->last_rx_ps_time = jiffies;
598 //printk("1skb_len(%d)\n", skb->len);
599 netif_rx(sub_skb);
600 }
601 }
602 kfree(prxb);
603 prxb = NULL;
604 }
605 }
606
607
608 void RxReorderIndicatePacket( struct ieee80211_device *ieee,
609 struct ieee80211_rxb* prxb,
610 PRX_TS_RECORD pTS,
611 u16 SeqNum)
612 {
613 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
614 PRX_REORDER_ENTRY pReorderEntry = NULL;
615 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
616 u8 WinSize = pHTInfo->RxReorderWinSize;
617 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
618 u8 index = 0;
619 bool bMatchWinStart = false, bPktInBuf = false;
620 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
621 /* Rx Reorder initialize condition.*/
622 if(pTS->RxIndicateSeq == 0xffff) {
623 pTS->RxIndicateSeq = SeqNum;
624 }
625
626 /* Drop out the packet which SeqNum is smaller than WinStart */
627 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
628 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
629 pTS->RxIndicateSeq, SeqNum);
630 pHTInfo->RxReorderDropCounter++;
631 {
632 int i;
633 for(i =0; i < prxb->nr_subframes; i++) {
634 dev_kfree_skb(prxb->subframes[i]);
635 }
636 kfree(prxb);
637 prxb = NULL;
638 }
639 return;
640 }
641
642 /*
643 * Sliding window manipulation. Conditions includes:
644 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
645 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
646 */
647 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
648 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
649 bMatchWinStart = true;
650 } else if(SN_LESS(WinEnd, SeqNum)) {
651 if(SeqNum >= (WinSize - 1)) {
652 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
653 } else {
654 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
655 }
656 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
657 }
658
659 /*
660 * Indication process.
661 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
662 * with the SeqNum smaller than latest WinStart and buffer other packets.
663 */
664 /* For Rx Reorder condition:
665 * 1. All packets with SeqNum smaller than WinStart => Indicate
666 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
667 */
668 if(bMatchWinStart) {
669 /* Current packet is going to be indicated.*/
670 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
671 pTS->RxIndicateSeq, SeqNum);
672 prxbIndicateArray[0] = prxb;
673 // printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum);
674 index = 1;
675 } else {
676 /* Current packet is going to be inserted into pending list.*/
677 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__);
678 if(!list_empty(&ieee->RxReorder_Unused_List)) {
679 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
680 list_del_init(&pReorderEntry->List);
681
682 /* Make a reorder entry and insert into a the packet list.*/
683 pReorderEntry->SeqNum = SeqNum;
684 pReorderEntry->prxb = prxb;
685 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
686
687 if(!AddReorderEntry(pTS, pReorderEntry)) {
688 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
689 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
690 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
691 {
692 int i;
693 for(i =0; i < prxb->nr_subframes; i++) {
694 dev_kfree_skb(prxb->subframes[i]);
695 }
696 kfree(prxb);
697 prxb = NULL;
698 }
699 } else {
700 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
701 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
702 }
703 }
704 else {
705 /*
706 * Packets are dropped if there is not enough reorder entries.
707 * This part shall be modified!! We can just indicate all the
708 * packets in buffer and get reorder entries.
709 */
710 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
711 {
712 int i;
713 for(i =0; i < prxb->nr_subframes; i++) {
714 dev_kfree_skb(prxb->subframes[i]);
715 }
716 kfree(prxb);
717 prxb = NULL;
718 }
719 }
720 }
721
722 /* Check if there is any packet need indicate.*/
723 while(!list_empty(&pTS->RxPendingPktList)) {
724 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
725 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
726 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
727 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
728 {
729 /* This protect buffer from overflow. */
730 if(index >= REORDER_WIN_SIZE) {
731 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
732 bPktInBuf = true;
733 break;
734 }
735
736 list_del_init(&pReorderEntry->List);
737
738 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
739 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
740
741 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
742 prxbIndicateArray[index] = pReorderEntry->prxb;
743 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
744 index++;
745
746 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
747 } else {
748 bPktInBuf = true;
749 break;
750 }
751 }
752
753 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
754 if(index>0) {
755 // Cancel previous pending timer.
756 // del_timer_sync(&pTS->RxPktPendingTimer);
757 pTS->RxTimeoutIndicateSeq = 0xffff;
758
759 // Indicate packets
760 if(index>REORDER_WIN_SIZE){
761 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
762 return;
763 }
764 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
765 }
766
767 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
768 // Set new pending timer.
769 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
770 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
771 if(timer_pending(&pTS->RxPktPendingTimer))
772 del_timer_sync(&pTS->RxPktPendingTimer);
773 pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime);
774 add_timer(&pTS->RxPktPendingTimer);
775 }
776 }
777
778 u8 parse_subframe(struct sk_buff *skb,
779 struct ieee80211_rx_stats *rx_stats,
780 struct ieee80211_rxb *rxb,u8* src,u8* dst)
781 {
782 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
783 u16 fc = le16_to_cpu(hdr->frame_ctl);
784
785 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
786 u16 ChkLength;
787 bool bIsAggregateFrame = false;
788 u16 nSubframe_Length;
789 u8 nPadding_Length = 0;
790 u16 SeqNum=0;
791
792 struct sk_buff *sub_skb;
793 u8 *data_ptr;
794 /* just for debug purpose */
795 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
796
797 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
798 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
799 bIsAggregateFrame = true;
800 }
801
802 if(IEEE80211_QOS_HAS_SEQ(fc)) {
803 LLCOffset += 2;
804 }
805
806 if(rx_stats->bContainHTC) {
807 LLCOffset += sHTCLng;
808 }
809 //printk("ChkLength = %d\n", LLCOffset);
810 // Null packet, don't indicate it to upper layer
811 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
812
813 if( skb->len <= ChkLength ) {
814 return 0;
815 }
816
817 skb_pull(skb, LLCOffset);
818
819 if(!bIsAggregateFrame) {
820 rxb->nr_subframes = 1;
821 #ifdef JOHN_NOCPY
822 rxb->subframes[0] = skb;
823 #else
824 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
825 #endif
826
827 memcpy(rxb->src,src,ETH_ALEN);
828 memcpy(rxb->dst,dst,ETH_ALEN);
829 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
830 return 1;
831 } else {
832 rxb->nr_subframes = 0;
833 memcpy(rxb->src,src,ETH_ALEN);
834 memcpy(rxb->dst,dst,ETH_ALEN);
835 while(skb->len > ETHERNET_HEADER_SIZE) {
836 /* Offset 12 denote 2 mac address */
837 nSubframe_Length = *((u16*)(skb->data + 12));
838 //==m==>change the length order
839 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
840
841 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
842 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
843 __FUNCTION__,rxb->nr_subframes);
844 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
845 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
846 printk("The Packet SeqNum is %d\n",SeqNum);
847 return 0;
848 }
849
850 /* move the data point to data content */
851 skb_pull(skb, ETHERNET_HEADER_SIZE);
852
853 #ifdef JOHN_NOCPY
854 sub_skb = skb_clone(skb, GFP_ATOMIC);
855 sub_skb->len = nSubframe_Length;
856 sub_skb->tail = sub_skb->data + nSubframe_Length;
857 #else
858 /* Allocate new skb for releasing to upper layer */
859 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
860 skb_reserve(sub_skb, 12);
861 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
862 memcpy(data_ptr,skb->data,nSubframe_Length);
863 #endif
864 rxb->subframes[rxb->nr_subframes++] = sub_skb;
865 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
866 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
867 break;
868 }
869 skb_pull(skb,nSubframe_Length);
870
871 if(skb->len != 0) {
872 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
873 if(nPadding_Length == 4) {
874 nPadding_Length = 0;
875 }
876
877 if(skb->len < nPadding_Length) {
878 return 0;
879 }
880
881 skb_pull(skb,nPadding_Length);
882 }
883 }
884 #ifdef JOHN_NOCPY
885 dev_kfree_skb(skb);
886 #endif
887 //{just for debug added by david
888 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
889 //}
890 return rxb->nr_subframes;
891 }
892 }
893
894 /* All received frames are sent to this function. @skb contains the frame in
895 * IEEE 802.11 format, i.e., in the format it was sent over air.
896 * This function is called only as a tasklet (software IRQ). */
897 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
898 struct ieee80211_rx_stats *rx_stats)
899 {
900 struct net_device *dev = ieee->dev;
901 struct ieee80211_hdr_4addr *hdr;
902 //struct ieee80211_hdr_3addrqos *hdr;
903
904 size_t hdrlen;
905 u16 fc, type, stype, sc;
906 struct net_device_stats *stats;
907 unsigned int frag;
908 u8 *payload;
909 u16 ethertype;
910 //added by amy for reorder
911 u8 TID = 0;
912 u16 SeqNum = 0;
913 PRX_TS_RECORD pTS = NULL;
914 //bool bIsAggregateFrame = false;
915 //added by amy for reorder
916 #ifdef NOT_YET
917 struct net_device *wds = NULL;
918 struct sk_buff *skb2 = NULL;
919 struct net_device *wds = NULL;
920 int frame_authorized = 0;
921 int from_assoc_ap = 0;
922 void *sta = NULL;
923 #endif
924 // u16 qos_ctl = 0;
925 u8 dst[ETH_ALEN];
926 u8 src[ETH_ALEN];
927 u8 bssid[ETH_ALEN];
928 struct ieee80211_crypt_data *crypt = NULL;
929 int keyidx = 0;
930
931 int i;
932 struct ieee80211_rxb* rxb = NULL;
933 // cheat the the hdr type
934 hdr = (struct ieee80211_hdr_4addr *)skb->data;
935 stats = &ieee->stats;
936
937 if (skb->len < 10) {
938 printk(KERN_INFO "%s: SKB length < 10\n",
939 dev->name);
940 goto rx_dropped;
941 }
942
943 fc = le16_to_cpu(hdr->frame_ctl);
944 type = WLAN_FC_GET_TYPE(fc);
945 stype = WLAN_FC_GET_STYPE(fc);
946 sc = le16_to_cpu(hdr->seq_ctl);
947
948 frag = WLAN_GET_SEQ_FRAG(sc);
949 hdrlen = ieee80211_get_hdrlen(fc);
950
951 if(HTCCheck(ieee, skb->data))
952 {
953 if(net_ratelimit())
954 printk("find HTCControl\n");
955 hdrlen += 4;
956 rx_stats->bContainHTC = 1;
957 }
958
959 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
960 #ifdef NOT_YET
961 #if WIRELESS_EXT > 15
962 /* Put this code here so that we avoid duplicating it in all
963 * Rx paths. - Jean II */
964 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
965 /* If spy monitoring on */
966 if (iface->spy_data.spy_number > 0) {
967 struct iw_quality wstats;
968 wstats.level = rx_stats->rssi;
969 wstats.noise = rx_stats->noise;
970 wstats.updated = 6; /* No qual value */
971 /* Update spy records */
972 wireless_spy_update(dev, hdr->addr2, &wstats);
973 }
974 #endif /* IW_WIRELESS_SPY */
975 #endif /* WIRELESS_EXT > 15 */
976 hostap_update_rx_stats(local->ap, hdr, rx_stats);
977 #endif
978
979 #if WIRELESS_EXT > 15
980 if (ieee->iw_mode == IW_MODE_MONITOR) {
981 ieee80211_monitor_rx(ieee, skb, rx_stats);
982 stats->rx_packets++;
983 stats->rx_bytes += skb->len;
984 return 1;
985 }
986 #endif
987 if (ieee->host_decrypt) {
988 int idx = 0;
989 if (skb->len >= hdrlen + 3)
990 idx = skb->data[hdrlen + 3] >> 6;
991 crypt = ieee->crypt[idx];
992 #ifdef NOT_YET
993 sta = NULL;
994
995 /* Use station specific key to override default keys if the
996 * receiver address is a unicast address ("individual RA"). If
997 * bcrx_sta_key parameter is set, station specific key is used
998 * even with broad/multicast targets (this is against IEEE
999 * 802.11, but makes it easier to use different keys with
1000 * stations that do not support WEP key mapping). */
1001
1002 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
1003 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
1004 &sta);
1005 #endif
1006
1007 /* allow NULL decrypt to indicate an station specific override
1008 * for default encryption */
1009 if (crypt && (crypt->ops == NULL ||
1010 crypt->ops->decrypt_mpdu == NULL))
1011 crypt = NULL;
1012
1013 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1014 /* This seems to be triggered by some (multicast?)
1015 * frames from other than current BSS, so just drop the
1016 * frames silently instead of filling system log with
1017 * these reports. */
1018 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1019 " (SA=%pM)\n",
1020 hdr->addr2);
1021 ieee->ieee_stats.rx_discards_undecryptable++;
1022 goto rx_dropped;
1023 }
1024 }
1025
1026 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1027 goto rx_dropped;
1028
1029 // if QoS enabled, should check the sequence for each of the AC
1030 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
1031 if (is_duplicate_packet(ieee, hdr))
1032 goto rx_dropped;
1033
1034 }
1035 else
1036 {
1037 PRX_TS_RECORD pRxTS = NULL;
1038 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid);
1039 if(GetTs(
1040 ieee,
1041 (PTS_COMMON_INFO*) &pRxTS,
1042 hdr->addr2,
1043 (u8)Frame_QoSTID((u8*)(skb->data)),
1044 RX_DIR,
1045 true))
1046 {
1047
1048 // 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));
1049 if( (fc & (1<<11)) &&
1050 (frag == pRxTS->RxLastFragNum) &&
1051 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
1052 {
1053 goto rx_dropped;
1054 }
1055 else
1056 {
1057 pRxTS->RxLastFragNum = frag;
1058 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1059 }
1060 }
1061 else
1062 {
1063 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
1064 goto rx_dropped;
1065 }
1066 }
1067 if (type == IEEE80211_FTYPE_MGMT) {
1068
1069
1070 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1071 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1072 goto rx_dropped;
1073 else
1074 goto rx_exit;
1075 }
1076
1077 /* Data frame - extract src/dst addresses */
1078 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1079 case IEEE80211_FCTL_FROMDS:
1080 memcpy(dst, hdr->addr1, ETH_ALEN);
1081 memcpy(src, hdr->addr3, ETH_ALEN);
1082 memcpy(bssid, hdr->addr2, ETH_ALEN);
1083 break;
1084 case IEEE80211_FCTL_TODS:
1085 memcpy(dst, hdr->addr3, ETH_ALEN);
1086 memcpy(src, hdr->addr2, ETH_ALEN);
1087 memcpy(bssid, hdr->addr1, ETH_ALEN);
1088 break;
1089 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1090 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1091 goto rx_dropped;
1092 memcpy(dst, hdr->addr3, ETH_ALEN);
1093 memcpy(src, hdr->addr4, ETH_ALEN);
1094 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1095 break;
1096 case 0:
1097 memcpy(dst, hdr->addr1, ETH_ALEN);
1098 memcpy(src, hdr->addr2, ETH_ALEN);
1099 memcpy(bssid, hdr->addr3, ETH_ALEN);
1100 break;
1101 }
1102
1103 #ifdef NOT_YET
1104 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1105 goto rx_dropped;
1106 if (wds) {
1107 skb->dev = dev = wds;
1108 stats = hostap_get_stats(dev);
1109 }
1110
1111 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1112 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1113 ieee->stadev &&
1114 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1115 /* Frame from BSSID of the AP for which we are a client */
1116 skb->dev = dev = ieee->stadev;
1117 stats = hostap_get_stats(dev);
1118 from_assoc_ap = 1;
1119 }
1120 #endif
1121
1122 dev->last_rx = jiffies;
1123
1124 #ifdef NOT_YET
1125 if ((ieee->iw_mode == IW_MODE_MASTER ||
1126 ieee->iw_mode == IW_MODE_REPEAT) &&
1127 !from_assoc_ap) {
1128 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1129 wds != NULL)) {
1130 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1131 frame_authorized = 0;
1132 break;
1133 case AP_RX_CONTINUE:
1134 frame_authorized = 1;
1135 break;
1136 case AP_RX_DROP:
1137 goto rx_dropped;
1138 case AP_RX_EXIT:
1139 goto rx_exit;
1140 }
1141 }
1142 #endif
1143 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1144 /* Nullfunc frames may have PS-bit set, so they must be passed to
1145 * hostap_handle_sta_rx() before being dropped here. */
1146 if (stype != IEEE80211_STYPE_DATA &&
1147 stype != IEEE80211_STYPE_DATA_CFACK &&
1148 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1149 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1150 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1151 ) {
1152 if (stype != IEEE80211_STYPE_NULLFUNC)
1153 IEEE80211_DEBUG_DROP(
1154 "RX: dropped data frame "
1155 "with no data (type=0x%02x, "
1156 "subtype=0x%02x, len=%d)\n",
1157 type, stype, skb->len);
1158 goto rx_dropped;
1159 }
1160 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1161 goto rx_dropped;
1162
1163 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1164
1165 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1166 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1167 {
1168 printk("decrypt frame error\n");
1169 goto rx_dropped;
1170 }
1171
1172
1173 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1174
1175 /* skb: hdr + (possibly fragmented) plaintext payload */
1176 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1177 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1178 int flen;
1179 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1180 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1181
1182 if (!frag_skb) {
1183 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1184 "Rx cannot get skb from fragment "
1185 "cache (morefrag=%d seq=%u frag=%u)\n",
1186 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1187 WLAN_GET_SEQ_SEQ(sc), frag);
1188 goto rx_dropped;
1189 }
1190 flen = skb->len;
1191 if (frag != 0)
1192 flen -= hdrlen;
1193
1194 if (frag_skb->tail + flen > frag_skb->end) {
1195 printk(KERN_WARNING "%s: host decrypted and "
1196 "reassembled frame did not fit skb\n",
1197 dev->name);
1198 ieee80211_frag_cache_invalidate(ieee, hdr);
1199 goto rx_dropped;
1200 }
1201
1202 if (frag == 0) {
1203 /* copy first fragment (including full headers) into
1204 * beginning of the fragment cache skb */
1205 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1206 } else {
1207 /* append frame payload to the end of the fragment
1208 * cache skb */
1209 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1210 flen);
1211 }
1212 dev_kfree_skb_any(skb);
1213 skb = NULL;
1214
1215 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1216 /* more fragments expected - leave the skb in fragment
1217 * cache for now; it will be delivered to upper layers
1218 * after all fragments have been received */
1219 goto rx_exit;
1220 }
1221
1222 /* this was the last fragment and the frame will be
1223 * delivered, so remove skb from fragment cache */
1224 skb = frag_skb;
1225 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1226 ieee80211_frag_cache_invalidate(ieee, hdr);
1227 }
1228
1229 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1230 * encrypted/authenticated */
1231 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1232 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1233 {
1234 printk("==>decrypt msdu error\n");
1235 goto rx_dropped;
1236 }
1237
1238 //added by amy for AP roaming
1239 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1240 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1241
1242 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1243 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1244 if (/*ieee->ieee802_1x &&*/
1245 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1246
1247 #ifdef CONFIG_IEEE80211_DEBUG
1248 /* pass unencrypted EAPOL frames even if encryption is
1249 * configured */
1250 struct eapol *eap = (struct eapol *)(skb->data +
1251 24);
1252 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1253 eap_get_type(eap->type));
1254 #endif
1255 } else {
1256 IEEE80211_DEBUG_DROP(
1257 "encryption configured, but RX "
1258 "frame not encrypted (SA=%pM)\n",
1259 hdr->addr2);
1260 goto rx_dropped;
1261 }
1262 }
1263
1264 #ifdef CONFIG_IEEE80211_DEBUG
1265 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1266 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1267 struct eapol *eap = (struct eapol *)(skb->data +
1268 24);
1269 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1270 eap_get_type(eap->type));
1271 }
1272 #endif
1273
1274 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1275 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1276 IEEE80211_DEBUG_DROP(
1277 "dropped unencrypted RX data "
1278 "frame from %pM"
1279 " (drop_unencrypted=1)\n",
1280 hdr->addr2);
1281 goto rx_dropped;
1282 }
1283 /*
1284 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1285 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1286 }
1287 */
1288 //added by amy for reorder
1289 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1290 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1291 {
1292 TID = Frame_QoSTID(skb->data);
1293 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1294 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1295 if(TID !=0 && TID !=3)
1296 {
1297 ieee->bis_any_nonbepkts = true;
1298 }
1299 }
1300 //added by amy for reorder
1301 /* skb: hdr + (possible reassembled) full plaintext payload */
1302 payload = skb->data + hdrlen;
1303 //ethertype = (payload[6] << 8) | payload[7];
1304 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1305 if(rxb == NULL)
1306 {
1307 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1308 goto rx_dropped;
1309 }
1310 /* to parse amsdu packets */
1311 /* qos data packets & reserved bit is 1 */
1312 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) {
1313 /* only to free rxb, and not submit the packets to upper layer */
1314 for(i =0; i < rxb->nr_subframes; i++) {
1315 dev_kfree_skb(rxb->subframes[i]);
1316 }
1317 kfree(rxb);
1318 rxb = NULL;
1319 goto rx_dropped;
1320 }
1321
1322 //added by amy for reorder
1323 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1324 //added by amy for reorder
1325 for(i = 0; i<rxb->nr_subframes; i++) {
1326 struct sk_buff *sub_skb = rxb->subframes[i];
1327
1328 if (sub_skb) {
1329 /* convert hdr + possible LLC headers into Ethernet header */
1330 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1331 if (sub_skb->len >= 8 &&
1332 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1333 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1334 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1335 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1336 * replace EtherType */
1337 skb_pull(sub_skb, SNAP_SIZE);
1338 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1339 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1340 } else {
1341 u16 len;
1342 /* Leave Ethernet header part of hdr and full payload */
1343 len = htons(sub_skb->len);
1344 memcpy(skb_push(sub_skb, 2), &len, 2);
1345 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1346 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1347 }
1348
1349 stats->rx_packets++;
1350 stats->rx_bytes += sub_skb->len;
1351 if(is_multicast_ether_addr(dst)) {
1352 stats->multicast++;
1353 }
1354
1355 /* Indicat the packets to upper layer */
1356 //printk("0skb_len(%d)\n", skb->len);
1357 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1358 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1359 sub_skb->dev = dev;
1360 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1361 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1362 ieee->last_rx_ps_time = jiffies;
1363 //printk("1skb_len(%d)\n", skb->len);
1364 netif_rx(sub_skb);
1365 }
1366 }
1367 kfree(rxb);
1368 rxb = NULL;
1369
1370 }
1371 else
1372 {
1373 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1374 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1375 }
1376 #ifndef JOHN_NOCPY
1377 dev_kfree_skb(skb);
1378 #endif
1379
1380 rx_exit:
1381 #ifdef NOT_YET
1382 if (sta)
1383 hostap_handle_sta_release(sta);
1384 #endif
1385 return 1;
1386
1387 rx_dropped:
1388 if (rxb != NULL)
1389 {
1390 kfree(rxb);
1391 rxb = NULL;
1392 }
1393 stats->rx_dropped++;
1394
1395 /* Returning 0 indicates to caller that we have not handled the SKB--
1396 * so it is still allocated and can be used again by underlying
1397 * hardware as a DMA target */
1398 return 0;
1399 }
1400
1401 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1402
1403 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1404
1405 /*
1406 * Make ther structure we read from the beacon packet has
1407 * the right values
1408 */
1409 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1410 *info_element, int sub_type)
1411 {
1412
1413 if (info_element->qui_subtype != sub_type)
1414 return -1;
1415 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1416 return -1;
1417 if (info_element->qui_type != QOS_OUI_TYPE)
1418 return -1;
1419 if (info_element->version != QOS_VERSION_1)
1420 return -1;
1421
1422 return 0;
1423 }
1424
1425
1426 /*
1427 * Parse a QoS parameter element
1428 */
1429 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1430 *element_param, struct ieee80211_info_element
1431 *info_element)
1432 {
1433 int ret = 0;
1434 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1435
1436 if ((info_element == NULL) || (element_param == NULL))
1437 return -1;
1438
1439 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1440 memcpy(element_param->info_element.qui, info_element->data,
1441 info_element->len);
1442 element_param->info_element.elementID = info_element->id;
1443 element_param->info_element.length = info_element->len;
1444 } else
1445 ret = -1;
1446 if (ret == 0)
1447 ret = ieee80211_verify_qos_info(&element_param->info_element,
1448 QOS_OUI_PARAM_SUB_TYPE);
1449 return ret;
1450 }
1451
1452 /*
1453 * Parse a QoS information element
1454 */
1455 static int ieee80211_read_qos_info_element(struct
1456 ieee80211_qos_information_element
1457 *element_info, struct ieee80211_info_element
1458 *info_element)
1459 {
1460 int ret = 0;
1461 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1462
1463 if (element_info == NULL)
1464 return -1;
1465 if (info_element == NULL)
1466 return -1;
1467
1468 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1469 memcpy(element_info->qui, info_element->data,
1470 info_element->len);
1471 element_info->elementID = info_element->id;
1472 element_info->length = info_element->len;
1473 } else
1474 ret = -1;
1475
1476 if (ret == 0)
1477 ret = ieee80211_verify_qos_info(element_info,
1478 QOS_OUI_INFO_SUB_TYPE);
1479 return ret;
1480 }
1481
1482
1483 /*
1484 * Write QoS parameters from the ac parameters.
1485 */
1486 static int ieee80211_qos_convert_ac_to_parameters(struct
1487 ieee80211_qos_parameter_info
1488 *param_elm, struct
1489 ieee80211_qos_parameters
1490 *qos_param)
1491 {
1492 int rc = 0;
1493 int i;
1494 struct ieee80211_qos_ac_parameter *ac_params;
1495 u8 aci;
1496 //u8 cw_min;
1497 //u8 cw_max;
1498
1499 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1500 ac_params = &(param_elm->ac_params_record[i]);
1501
1502 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1503
1504 if(aci >= QOS_QUEUE_NUM)
1505 continue;
1506 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1507
1508 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1509 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1510
1511 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1512
1513 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1514
1515 qos_param->flag[aci] =
1516 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1517 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1518 }
1519 return rc;
1520 }
1521
1522 /*
1523 * we have a generic data element which it may contain QoS information or
1524 * parameters element. check the information element length to decide
1525 * which type to read
1526 */
1527 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1528 *info_element,
1529 struct ieee80211_network *network)
1530 {
1531 int rc = 0;
1532 struct ieee80211_qos_parameters *qos_param = NULL;
1533 struct ieee80211_qos_information_element qos_info_element;
1534
1535 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1536
1537 if (rc == 0) {
1538 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1539 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1540 } else {
1541 struct ieee80211_qos_parameter_info param_element;
1542
1543 rc = ieee80211_read_qos_param_element(&param_element,
1544 info_element);
1545 if (rc == 0) {
1546 qos_param = &(network->qos_data.parameters);
1547 ieee80211_qos_convert_ac_to_parameters(&param_element,
1548 qos_param);
1549 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1550 network->qos_data.param_count =
1551 param_element.info_element.ac_info & 0x0F;
1552 }
1553 }
1554
1555 if (rc == 0) {
1556 IEEE80211_DEBUG_QOS("QoS is supported\n");
1557 network->qos_data.supported = 1;
1558 }
1559 return rc;
1560 }
1561
1562 #ifdef CONFIG_IEEE80211_DEBUG
1563 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1564
1565 static const char *get_info_element_string(u16 id)
1566 {
1567 switch (id) {
1568 MFIE_STRING(SSID);
1569 MFIE_STRING(RATES);
1570 MFIE_STRING(FH_SET);
1571 MFIE_STRING(DS_SET);
1572 MFIE_STRING(CF_SET);
1573 MFIE_STRING(TIM);
1574 MFIE_STRING(IBSS_SET);
1575 MFIE_STRING(COUNTRY);
1576 MFIE_STRING(HOP_PARAMS);
1577 MFIE_STRING(HOP_TABLE);
1578 MFIE_STRING(REQUEST);
1579 MFIE_STRING(CHALLENGE);
1580 MFIE_STRING(POWER_CONSTRAINT);
1581 MFIE_STRING(POWER_CAPABILITY);
1582 MFIE_STRING(TPC_REQUEST);
1583 MFIE_STRING(TPC_REPORT);
1584 MFIE_STRING(SUPP_CHANNELS);
1585 MFIE_STRING(CSA);
1586 MFIE_STRING(MEASURE_REQUEST);
1587 MFIE_STRING(MEASURE_REPORT);
1588 MFIE_STRING(QUIET);
1589 MFIE_STRING(IBSS_DFS);
1590 // MFIE_STRING(ERP_INFO);
1591 MFIE_STRING(RSN);
1592 MFIE_STRING(RATES_EX);
1593 MFIE_STRING(GENERIC);
1594 MFIE_STRING(QOS_PARAMETER);
1595 default:
1596 return "UNKNOWN";
1597 }
1598 }
1599 #endif
1600
1601 #ifdef ENABLE_DOT11D
1602 static inline void ieee80211_extract_country_ie(
1603 struct ieee80211_device *ieee,
1604 struct ieee80211_info_element *info_element,
1605 struct ieee80211_network *network,
1606 u8 * addr2
1607 )
1608 {
1609 if(IS_DOT11D_ENABLE(ieee))
1610 {
1611 if(info_element->len!= 0)
1612 {
1613 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1614 network->CountryIeLen = info_element->len;
1615
1616 if(!IS_COUNTRY_IE_VALID(ieee))
1617 {
1618 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1619 }
1620 }
1621
1622 //
1623 // 070305, rcnjko: I update country IE watch dog here because
1624 // some AP (e.g. Cisco 1242) don't include country IE in their
1625 // probe response frame.
1626 //
1627 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1628 {
1629 UPDATE_CIE_WATCHDOG(ieee);
1630 }
1631 }
1632
1633 }
1634 #endif
1635
1636 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1637 struct ieee80211_info_element *info_element,
1638 u16 length,
1639 struct ieee80211_network *network,
1640 struct ieee80211_rx_stats *stats)
1641 {
1642 u8 i;
1643 short offset;
1644 u16 tmp_htcap_len=0;
1645 u16 tmp_htinfo_len=0;
1646 u16 ht_realtek_agg_len=0;
1647 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1648 // u16 broadcom_len = 0;
1649 #ifdef CONFIG_IEEE80211_DEBUG
1650 char rates_str[64];
1651 char *p;
1652 #endif
1653
1654 while (length >= sizeof(*info_element)) {
1655 if (sizeof(*info_element) + info_element->len > length) {
1656 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1657 "info_element->len + 2 > left : "
1658 "info_element->len+2=%zd left=%d, id=%d.\n",
1659 info_element->len +
1660 sizeof(*info_element),
1661 length, info_element->id);
1662 /* We stop processing but don't return an error here
1663 * because some misbehaviour APs break this rule. ie.
1664 * Orinoco AP1000. */
1665 break;
1666 }
1667
1668 switch (info_element->id) {
1669 case MFIE_TYPE_SSID:
1670 if (ieee80211_is_empty_essid(info_element->data,
1671 info_element->len)) {
1672 network->flags |= NETWORK_EMPTY_ESSID;
1673 break;
1674 }
1675
1676 network->ssid_len = min(info_element->len,
1677 (u8) IW_ESSID_MAX_SIZE);
1678 memcpy(network->ssid, info_element->data, network->ssid_len);
1679 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1680 memset(network->ssid + network->ssid_len, 0,
1681 IW_ESSID_MAX_SIZE - network->ssid_len);
1682
1683 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1684 network->ssid, network->ssid_len);
1685 break;
1686
1687 case MFIE_TYPE_RATES:
1688 #ifdef CONFIG_IEEE80211_DEBUG
1689 p = rates_str;
1690 #endif
1691 network->rates_len = min(info_element->len,
1692 MAX_RATES_LENGTH);
1693 for (i = 0; i < network->rates_len; i++) {
1694 network->rates[i] = info_element->data[i];
1695 #ifdef CONFIG_IEEE80211_DEBUG
1696 p += snprintf(p, sizeof(rates_str) -
1697 (p - rates_str), "%02X ",
1698 network->rates[i]);
1699 #endif
1700 if (ieee80211_is_ofdm_rate
1701 (info_element->data[i])) {
1702 network->flags |= NETWORK_HAS_OFDM;
1703 if (info_element->data[i] &
1704 IEEE80211_BASIC_RATE_MASK)
1705 network->flags &=
1706 ~NETWORK_HAS_CCK;
1707 }
1708 }
1709
1710 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1711 rates_str, network->rates_len);
1712 break;
1713
1714 case MFIE_TYPE_RATES_EX:
1715 #ifdef CONFIG_IEEE80211_DEBUG
1716 p = rates_str;
1717 #endif
1718 network->rates_ex_len = min(info_element->len,
1719 MAX_RATES_EX_LENGTH);
1720 for (i = 0; i < network->rates_ex_len; i++) {
1721 network->rates_ex[i] = info_element->data[i];
1722 #ifdef CONFIG_IEEE80211_DEBUG
1723 p += snprintf(p, sizeof(rates_str) -
1724 (p - rates_str), "%02X ",
1725 network->rates[i]);
1726 #endif
1727 if (ieee80211_is_ofdm_rate
1728 (info_element->data[i])) {
1729 network->flags |= NETWORK_HAS_OFDM;
1730 if (info_element->data[i] &
1731 IEEE80211_BASIC_RATE_MASK)
1732 network->flags &=
1733 ~NETWORK_HAS_CCK;
1734 }
1735 }
1736
1737 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1738 rates_str, network->rates_ex_len);
1739 break;
1740
1741 case MFIE_TYPE_DS_SET:
1742 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1743 info_element->data[0]);
1744 network->channel = info_element->data[0];
1745 break;
1746
1747 case MFIE_TYPE_FH_SET:
1748 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1749 break;
1750
1751 case MFIE_TYPE_CF_SET:
1752 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1753 break;
1754
1755 case MFIE_TYPE_TIM:
1756 if(info_element->len < 4)
1757 break;
1758
1759 network->tim.tim_count = info_element->data[0];
1760 network->tim.tim_period = info_element->data[1];
1761
1762 network->dtim_period = info_element->data[1];
1763 if(ieee->state != IEEE80211_LINKED)
1764 break;
1765
1766 network->last_dtim_sta_time[0] = stats->mac_time[0];
1767 network->last_dtim_sta_time[1] = stats->mac_time[1];
1768
1769 network->dtim_data = IEEE80211_DTIM_VALID;
1770
1771 if(info_element->data[0] != 0)
1772 break;
1773
1774 if(info_element->data[2] & 1)
1775 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1776
1777 offset = (info_element->data[2] >> 1)*2;
1778
1779 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id);
1780
1781 if(ieee->assoc_id < 8*offset ||
1782 ieee->assoc_id > 8*(offset + info_element->len -3))
1783
1784 break;
1785
1786 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1787
1788 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1789 network->dtim_data |= IEEE80211_DTIM_UCAST;
1790
1791 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1792 break;
1793
1794 case MFIE_TYPE_ERP:
1795 network->erp_value = info_element->data[0];
1796 network->flags |= NETWORK_HAS_ERP_VALUE;
1797 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1798 network->erp_value);
1799 break;
1800 case MFIE_TYPE_IBSS_SET:
1801 network->atim_window = info_element->data[0];
1802 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1803 network->atim_window);
1804 break;
1805
1806 case MFIE_TYPE_CHALLENGE:
1807 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1808 break;
1809
1810 case MFIE_TYPE_GENERIC:
1811 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1812 info_element->len);
1813 if (!ieee80211_parse_qos_info_param_IE(info_element,
1814 network))
1815 break;
1816
1817 if (info_element->len >= 4 &&
1818 info_element->data[0] == 0x00 &&
1819 info_element->data[1] == 0x50 &&
1820 info_element->data[2] == 0xf2 &&
1821 info_element->data[3] == 0x01) {
1822 network->wpa_ie_len = min(info_element->len + 2,
1823 MAX_WPA_IE_LEN);
1824 memcpy(network->wpa_ie, info_element,
1825 network->wpa_ie_len);
1826 break;
1827 }
1828
1829 #ifdef THOMAS_TURBO
1830 if (info_element->len == 7 &&
1831 info_element->data[0] == 0x00 &&
1832 info_element->data[1] == 0xe0 &&
1833 info_element->data[2] == 0x4c &&
1834 info_element->data[3] == 0x01 &&
1835 info_element->data[4] == 0x02) {
1836 network->Turbo_Enable = 1;
1837 }
1838 #endif
1839
1840 //for HTcap and HTinfo parameters
1841 if(tmp_htcap_len == 0){
1842 if(info_element->len >= 4 &&
1843 info_element->data[0] == 0x00 &&
1844 info_element->data[1] == 0x90 &&
1845 info_element->data[2] == 0x4c &&
1846 info_element->data[3] == 0x033){
1847
1848 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1849 if(tmp_htcap_len != 0){
1850 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1851 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1852 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1853 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1854 }
1855 }
1856 if(tmp_htcap_len != 0)
1857 network->bssht.bdSupportHT = true;
1858 else
1859 network->bssht.bdSupportHT = false;
1860 }
1861
1862
1863 if(tmp_htinfo_len == 0){
1864 if(info_element->len >= 4 &&
1865 info_element->data[0] == 0x00 &&
1866 info_element->data[1] == 0x90 &&
1867 info_element->data[2] == 0x4c &&
1868 info_element->data[3] == 0x034){
1869
1870 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1871 if(tmp_htinfo_len != 0){
1872 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1873 if(tmp_htinfo_len){
1874 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1875 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1876 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1877 }
1878
1879 }
1880
1881 }
1882 }
1883
1884 if(ieee->aggregation){
1885 if(network->bssht.bdSupportHT){
1886 if(info_element->len >= 4 &&
1887 info_element->data[0] == 0x00 &&
1888 info_element->data[1] == 0xe0 &&
1889 info_element->data[2] == 0x4c &&
1890 info_element->data[3] == 0x02){
1891
1892 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1893 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1894
1895 }
1896 if(ht_realtek_agg_len >= 5){
1897 network->bssht.bdRT2RTAggregation = true;
1898
1899 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1900 network->bssht.bdRT2RTLongSlotTime = true;
1901 }
1902 }
1903
1904 }
1905
1906 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1907 {
1908 if((info_element->len >= 3 &&
1909 info_element->data[0] == 0x00 &&
1910 info_element->data[1] == 0x05 &&
1911 info_element->data[2] == 0xb5) ||
1912 (info_element->len >= 3 &&
1913 info_element->data[0] == 0x00 &&
1914 info_element->data[1] == 0x0a &&
1915 info_element->data[2] == 0xf7) ||
1916 (info_element->len >= 3 &&
1917 info_element->data[0] == 0x00 &&
1918 info_element->data[1] == 0x10 &&
1919 info_element->data[2] == 0x18)){
1920
1921 network->broadcom_cap_exist = true;
1922
1923 }
1924 }
1925 if(info_element->len >= 3 &&
1926 info_element->data[0] == 0x00 &&
1927 info_element->data[1] == 0x0c &&
1928 info_element->data[2] == 0x43)
1929 {
1930 network->ralink_cap_exist = true;
1931 }
1932 else
1933 network->ralink_cap_exist = false;
1934 //added by amy for atheros AP
1935 if((info_element->len >= 3 &&
1936 info_element->data[0] == 0x00 &&
1937 info_element->data[1] == 0x03 &&
1938 info_element->data[2] == 0x7f) ||
1939 (info_element->len >= 3 &&
1940 info_element->data[0] == 0x00 &&
1941 info_element->data[1] == 0x13 &&
1942 info_element->data[2] == 0x74))
1943 {
1944 printk("========>%s(): athros AP is exist\n",__FUNCTION__);
1945 network->atheros_cap_exist = true;
1946 }
1947 else
1948 network->atheros_cap_exist = false;
1949
1950 if(info_element->len >= 3 &&
1951 info_element->data[0] == 0x00 &&
1952 info_element->data[1] == 0x40 &&
1953 info_element->data[2] == 0x96)
1954 {
1955 network->cisco_cap_exist = true;
1956 }
1957 else
1958 network->cisco_cap_exist = false;
1959 //added by amy for LEAP of cisco
1960 if(info_element->len > 4 &&
1961 info_element->data[0] == 0x00 &&
1962 info_element->data[1] == 0x40 &&
1963 info_element->data[2] == 0x96 &&
1964 info_element->data[3] == 0x01)
1965 {
1966 if(info_element->len == 6)
1967 {
1968 memcpy(network->CcxRmState, &info_element[4], 2);
1969 if(network->CcxRmState[0] != 0)
1970 {
1971 network->bCcxRmEnable = true;
1972 }
1973 else
1974 network->bCcxRmEnable = false;
1975 //
1976 // CCXv4 Table 59-1 MBSSID Masks.
1977 //
1978 network->MBssidMask = network->CcxRmState[1] & 0x07;
1979 if(network->MBssidMask != 0)
1980 {
1981 network->bMBssidValid = true;
1982 network->MBssidMask = 0xff << (network->MBssidMask);
1983 cpMacAddr(network->MBssid, network->bssid);
1984 network->MBssid[5] &= network->MBssidMask;
1985 }
1986 else
1987 {
1988 network->bMBssidValid = false;
1989 }
1990 }
1991 else
1992 {
1993 network->bCcxRmEnable = false;
1994 }
1995 }
1996 if(info_element->len > 4 &&
1997 info_element->data[0] == 0x00 &&
1998 info_element->data[1] == 0x40 &&
1999 info_element->data[2] == 0x96 &&
2000 info_element->data[3] == 0x03)
2001 {
2002 if(info_element->len == 5)
2003 {
2004 network->bWithCcxVerNum = true;
2005 network->BssCcxVerNumber = info_element->data[4];
2006 }
2007 else
2008 {
2009 network->bWithCcxVerNum = false;
2010 network->BssCcxVerNumber = 0;
2011 }
2012 }
2013 break;
2014
2015 case MFIE_TYPE_RSN:
2016 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2017 info_element->len);
2018 network->rsn_ie_len = min(info_element->len + 2,
2019 MAX_WPA_IE_LEN);
2020 memcpy(network->rsn_ie, info_element,
2021 network->rsn_ie_len);
2022 break;
2023
2024 //HT related element.
2025 case MFIE_TYPE_HT_CAP:
2026 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2027 info_element->len);
2028 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2029 if(tmp_htcap_len != 0){
2030 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2031 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2032 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2033 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2034
2035 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2036 // windows driver will update WMM parameters each beacon received once connected
2037 // Linux driver is a bit different.
2038 network->bssht.bdSupportHT = true;
2039 }
2040 else
2041 network->bssht.bdSupportHT = false;
2042 break;
2043
2044
2045 case MFIE_TYPE_HT_INFO:
2046 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2047 info_element->len);
2048 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2049 if(tmp_htinfo_len){
2050 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2051 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2052 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2053 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2054 }
2055 break;
2056
2057 case MFIE_TYPE_AIRONET:
2058 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2059 info_element->len);
2060 if(info_element->len >IE_CISCO_FLAG_POSITION)
2061 {
2062 network->bWithAironetIE = true;
2063
2064 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2065 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2066 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2067 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2068 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2069 {
2070 network->bCkipSupported = true;
2071 }
2072 else
2073 {
2074 network->bCkipSupported = false;
2075 }
2076 }
2077 else
2078 {
2079 network->bWithAironetIE = false;
2080 network->bCkipSupported = false;
2081 }
2082 break;
2083 case MFIE_TYPE_QOS_PARAMETER:
2084 printk(KERN_ERR
2085 "QoS Error need to parse QOS_PARAMETER IE\n");
2086 break;
2087
2088 #ifdef ENABLE_DOT11D
2089 case MFIE_TYPE_COUNTRY:
2090 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2091 info_element->len);
2092 //printk("=====>Receive <%s> Country IE\n",network->ssid);
2093 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2094 break;
2095 #endif
2096 /* TODO */
2097 default:
2098 IEEE80211_DEBUG_MGMT
2099 ("Unsupported info element: %s (%d)\n",
2100 get_info_element_string(info_element->id),
2101 info_element->id);
2102 break;
2103 }
2104
2105 length -= sizeof(*info_element) + info_element->len;
2106 info_element =
2107 (struct ieee80211_info_element *)&info_element->
2108 data[info_element->len];
2109 }
2110
2111 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2112 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2113 {
2114 network->unknown_cap_exist = true;
2115 }
2116 else
2117 {
2118 network->unknown_cap_exist = false;
2119 }
2120 return 0;
2121 }
2122
2123 static inline u8 ieee80211_SignalStrengthTranslate(
2124 u8 CurrSS
2125 )
2126 {
2127 u8 RetSS;
2128
2129 // Step 1. Scale mapping.
2130 if(CurrSS >= 71 && CurrSS <= 100)
2131 {
2132 RetSS = 90 + ((CurrSS - 70) / 3);
2133 }
2134 else if(CurrSS >= 41 && CurrSS <= 70)
2135 {
2136 RetSS = 78 + ((CurrSS - 40) / 3);
2137 }
2138 else if(CurrSS >= 31 && CurrSS <= 40)
2139 {
2140 RetSS = 66 + (CurrSS - 30);
2141 }
2142 else if(CurrSS >= 21 && CurrSS <= 30)
2143 {
2144 RetSS = 54 + (CurrSS - 20);
2145 }
2146 else if(CurrSS >= 5 && CurrSS <= 20)
2147 {
2148 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2149 }
2150 else if(CurrSS == 4)
2151 {
2152 RetSS = 36;
2153 }
2154 else if(CurrSS == 3)
2155 {
2156 RetSS = 27;
2157 }
2158 else if(CurrSS == 2)
2159 {
2160 RetSS = 18;
2161 }
2162 else if(CurrSS == 1)
2163 {
2164 RetSS = 9;
2165 }
2166 else
2167 {
2168 RetSS = CurrSS;
2169 }
2170 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2171
2172 // Step 2. Smoothing.
2173
2174 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2175
2176 return RetSS;
2177 }
2178
2179 long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index.
2180 {
2181 long signal_power; // in dBm.
2182
2183 // Translate to dBm (x=0.5y-95).
2184 signal_power = (long)((signal_strength_index + 1) >> 1);
2185 signal_power -= 95;
2186
2187 return signal_power;
2188 }
2189
2190 static inline int ieee80211_network_init(
2191 struct ieee80211_device *ieee,
2192 struct ieee80211_probe_response *beacon,
2193 struct ieee80211_network *network,
2194 struct ieee80211_rx_stats *stats)
2195 {
2196 #ifdef CONFIG_IEEE80211_DEBUG
2197 //char rates_str[64];
2198 //char *p;
2199 #endif
2200
2201 network->qos_data.active = 0;
2202 network->qos_data.supported = 0;
2203 network->qos_data.param_count = 0;
2204 network->qos_data.old_param_count = 0;
2205
2206 /* Pull out fixed field data */
2207 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2208 network->capability = le16_to_cpu(beacon->capability);
2209 network->last_scanned = jiffies;
2210 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2211 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2212 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2213 /* Where to pull this? beacon->listen_interval;*/
2214 network->listen_interval = 0x0A;
2215 network->rates_len = network->rates_ex_len = 0;
2216 network->last_associate = 0;
2217 network->ssid_len = 0;
2218 network->flags = 0;
2219 network->atim_window = 0;
2220 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2221 0x3 : 0x0;
2222 network->berp_info_valid = false;
2223 network->broadcom_cap_exist = false;
2224 network->ralink_cap_exist = false;
2225 network->atheros_cap_exist = false;
2226 network->cisco_cap_exist = false;
2227 network->unknown_cap_exist = false;
2228 #ifdef THOMAS_TURBO
2229 network->Turbo_Enable = 0;
2230 #endif
2231 #ifdef ENABLE_DOT11D
2232 network->CountryIeLen = 0;
2233 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2234 #endif
2235 //Initialize HT parameters
2236 //ieee80211_ht_initialize(&network->bssht);
2237 HTInitializeBssDesc(&network->bssht);
2238 if (stats->freq == IEEE80211_52GHZ_BAND) {
2239 /* for A band (No DS info) */
2240 network->channel = stats->received_channel;
2241 } else
2242 network->flags |= NETWORK_HAS_CCK;
2243
2244 network->wpa_ie_len = 0;
2245 network->rsn_ie_len = 0;
2246
2247 if (ieee80211_parse_info_param
2248 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2249 return 1;
2250
2251 network->mode = 0;
2252 if (stats->freq == IEEE80211_52GHZ_BAND)
2253 network->mode = IEEE_A;
2254 else {
2255 if (network->flags & NETWORK_HAS_OFDM)
2256 network->mode |= IEEE_G;
2257 if (network->flags & NETWORK_HAS_CCK)
2258 network->mode |= IEEE_B;
2259 }
2260
2261 if (network->mode == 0) {
2262 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2263 "network.\n",
2264 escape_essid(network->ssid,
2265 network->ssid_len),
2266 network->bssid);
2267 return 1;
2268 }
2269
2270 if(network->bssht.bdSupportHT){
2271 if(network->mode == IEEE_A)
2272 network->mode = IEEE_N_5G;
2273 else if(network->mode & (IEEE_G | IEEE_B))
2274 network->mode = IEEE_N_24G;
2275 }
2276 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2277 network->flags |= NETWORK_EMPTY_ESSID;
2278
2279 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2280 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2281 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2282
2283 memcpy(&network->stats, stats, sizeof(network->stats));
2284
2285 return 0;
2286 }
2287
2288 static inline int is_same_network(struct ieee80211_network *src,
2289 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2290 {
2291 /* A network is only a duplicate if the channel, BSSID, ESSID
2292 * and the capability field (in particular IBSS and BSS) all match.
2293 * We treat all <hidden> with the same BSSID and channel
2294 * as one network */
2295 return //((src->ssid_len == dst->ssid_len) &&
2296 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2297 (src->channel == dst->channel) &&
2298 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2299 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2300 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2301 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2302 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2303 ((src->capability & WLAN_CAPABILITY_BSS) ==
2304 (dst->capability & WLAN_CAPABILITY_BSS)));
2305 }
2306
2307 static inline void update_network(struct ieee80211_network *dst,
2308 struct ieee80211_network *src)
2309 {
2310 int qos_active;
2311 u8 old_param;
2312
2313 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2314 dst->capability = src->capability;
2315 memcpy(dst->rates, src->rates, src->rates_len);
2316 dst->rates_len = src->rates_len;
2317 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2318 dst->rates_ex_len = src->rates_ex_len;
2319 if(src->ssid_len > 0)
2320 {
2321 memset(dst->ssid, 0, dst->ssid_len);
2322 dst->ssid_len = src->ssid_len;
2323 memcpy(dst->ssid, src->ssid, src->ssid_len);
2324 }
2325 dst->mode = src->mode;
2326 dst->flags = src->flags;
2327 dst->time_stamp[0] = src->time_stamp[0];
2328 dst->time_stamp[1] = src->time_stamp[1];
2329 if (src->flags & NETWORK_HAS_ERP_VALUE)
2330 {
2331 dst->erp_value = src->erp_value;
2332 dst->berp_info_valid = src->berp_info_valid = true;
2333 }
2334 dst->beacon_interval = src->beacon_interval;
2335 dst->listen_interval = src->listen_interval;
2336 dst->atim_window = src->atim_window;
2337 dst->dtim_period = src->dtim_period;
2338 dst->dtim_data = src->dtim_data;
2339 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2340 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2341 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2342
2343 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2344 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2345 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2346 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2347 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2348 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2349 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2350 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2351 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2352 dst->ralink_cap_exist = src->ralink_cap_exist;
2353 dst->atheros_cap_exist = src->atheros_cap_exist;
2354 dst->cisco_cap_exist = src->cisco_cap_exist;
2355 dst->unknown_cap_exist = src->unknown_cap_exist;
2356 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2357 dst->wpa_ie_len = src->wpa_ie_len;
2358 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2359 dst->rsn_ie_len = src->rsn_ie_len;
2360
2361 dst->last_scanned = jiffies;
2362 /* qos related parameters */
2363 //qos_active = src->qos_data.active;
2364 qos_active = dst->qos_data.active;
2365 //old_param = dst->qos_data.old_param_count;
2366 old_param = dst->qos_data.param_count;
2367 if(dst->flags & NETWORK_HAS_QOS_MASK)
2368 memcpy(&dst->qos_data, &src->qos_data,
2369 sizeof(struct ieee80211_qos_data));
2370 else {
2371 dst->qos_data.supported = src->qos_data.supported;
2372 dst->qos_data.param_count = src->qos_data.param_count;
2373 }
2374
2375 if(dst->qos_data.supported == 1) {
2376 dst->QoS_Enable = 1;
2377 if(dst->ssid_len)
2378 IEEE80211_DEBUG_QOS
2379 ("QoS the network %s is QoS supported\n",
2380 dst->ssid);
2381 else
2382 IEEE80211_DEBUG_QOS
2383 ("QoS the network is QoS supported\n");
2384 }
2385 dst->qos_data.active = qos_active;
2386 dst->qos_data.old_param_count = old_param;
2387
2388 /* dst->last_associate is not overwritten */
2389 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2390 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2391 src->wmm_param[1].ac_aci_acm_aifsn|| \
2392 src->wmm_param[2].ac_aci_acm_aifsn|| \
2393 src->wmm_param[1].ac_aci_acm_aifsn) {
2394 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2395 }
2396 //dst->QoS_Enable = src->QoS_Enable;
2397 #ifdef THOMAS_TURBO
2398 dst->Turbo_Enable = src->Turbo_Enable;
2399 #endif
2400
2401 #ifdef ENABLE_DOT11D
2402 dst->CountryIeLen = src->CountryIeLen;
2403 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2404 #endif
2405
2406 //added by amy for LEAP
2407 dst->bWithAironetIE = src->bWithAironetIE;
2408 dst->bCkipSupported = src->bCkipSupported;
2409 memcpy(dst->CcxRmState,src->CcxRmState,2);
2410 dst->bCcxRmEnable = src->bCcxRmEnable;
2411 dst->MBssidMask = src->MBssidMask;
2412 dst->bMBssidValid = src->bMBssidValid;
2413 memcpy(dst->MBssid,src->MBssid,6);
2414 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2415 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2416
2417 }
2418
2419 static inline int is_beacon(__le16 fc)
2420 {
2421 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2422 }
2423
2424 static inline void ieee80211_process_probe_response(
2425 struct ieee80211_device *ieee,
2426 struct ieee80211_probe_response *beacon,
2427 struct ieee80211_rx_stats *stats)
2428 {
2429 struct ieee80211_network network;
2430 struct ieee80211_network *target;
2431 struct ieee80211_network *oldest = NULL;
2432 #ifdef CONFIG_IEEE80211_DEBUG
2433 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2434 #endif
2435 unsigned long flags;
2436 short renew;
2437 //u8 wmm_info;
2438
2439 memset(&network, 0, sizeof(struct ieee80211_network));
2440 IEEE80211_DEBUG_SCAN(
2441 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2442 escape_essid(info_element->data, info_element->len),
2443 beacon->header.addr3,
2444 (beacon->capability & (1<<0xf)) ? '1' : '0',
2445 (beacon->capability & (1<<0xe)) ? '1' : '0',
2446 (beacon->capability & (1<<0xd)) ? '1' : '0',
2447 (beacon->capability & (1<<0xc)) ? '1' : '0',
2448 (beacon->capability & (1<<0xb)) ? '1' : '0',
2449 (beacon->capability & (1<<0xa)) ? '1' : '0',
2450 (beacon->capability & (1<<0x9)) ? '1' : '0',
2451 (beacon->capability & (1<<0x8)) ? '1' : '0',
2452 (beacon->capability & (1<<0x7)) ? '1' : '0',
2453 (beacon->capability & (1<<0x6)) ? '1' : '0',
2454 (beacon->capability & (1<<0x5)) ? '1' : '0',
2455 (beacon->capability & (1<<0x4)) ? '1' : '0',
2456 (beacon->capability & (1<<0x3)) ? '1' : '0',
2457 (beacon->capability & (1<<0x2)) ? '1' : '0',
2458 (beacon->capability & (1<<0x1)) ? '1' : '0',
2459 (beacon->capability & (1<<0x0)) ? '1' : '0');
2460
2461 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2462 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2463 escape_essid(info_element->data,
2464 info_element->len),
2465 beacon->header.addr3,
2466 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2467 IEEE80211_STYPE_PROBE_RESP ?
2468 "PROBE RESPONSE" : "BEACON");
2469 return;
2470 }
2471
2472 #ifdef ENABLE_DOT11D
2473 // For Asus EeePc request,
2474 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2475 // wireless adapter should follow the country code.
2476 // (2) If there is no any country code in beacon,
2477 // then wireless adapter should do active scan from ch1~11 and
2478 // passive scan from ch12~14
2479
2480 if( !IsLegalChannel(ieee, network.channel) )
2481 return;
2482 if(ieee->bGlobalDomain)
2483 {
2484 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2485 {
2486 // Case 1: Country code
2487 if(IS_COUNTRY_IE_VALID(ieee) )
2488 {
2489 if( !IsLegalChannel(ieee, network.channel) )
2490 {
2491 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2492 return;
2493 }
2494 }
2495 // Case 2: No any country code.
2496 else
2497 {
2498 // Filter over channel ch12~14
2499 if(network.channel > 11)
2500 {
2501 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2502 return;
2503 }
2504 }
2505 }
2506 else
2507 {
2508 // Case 1: Country code
2509 if(IS_COUNTRY_IE_VALID(ieee) )
2510 {
2511 if( !IsLegalChannel(ieee, network.channel) )
2512 {
2513 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2514 return;
2515 }
2516 }
2517 // Case 2: No any country code.
2518 else
2519 {
2520 // Filter over channel ch12~14
2521 if(network.channel > 14)
2522 {
2523 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2524 return;
2525 }
2526 }
2527 }
2528 }
2529 #endif
2530
2531 /* The network parsed correctly -- so now we scan our known networks
2532 * to see if we can find it in our list.
2533 *
2534 * NOTE: This search is definitely not optimized. Once its doing
2535 * the "right thing" we'll optimize it for efficiency if
2536 * necessary */
2537
2538 /* Search for this entry in the list and update it if it is
2539 * already there. */
2540
2541 spin_lock_irqsave(&ieee->lock, flags);
2542
2543 if(is_same_network(&ieee->current_network, &network, ieee)) {
2544 update_network(&ieee->current_network, &network);
2545 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2546 && ieee->current_network.berp_info_valid){
2547 if(ieee->current_network.erp_value& ERP_UseProtection)
2548 ieee->current_network.buseprotection = true;
2549 else
2550 ieee->current_network.buseprotection = false;
2551 }
2552 if(is_beacon(beacon->header.frame_ctl))
2553 {
2554 if(ieee->state == IEEE80211_LINKED)
2555 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2556 }
2557 else //hidden AP
2558 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2559 }
2560
2561 list_for_each_entry(target, &ieee->network_list, list) {
2562 if (is_same_network(target, &network, ieee))
2563 break;
2564 if ((oldest == NULL) ||
2565 (target->last_scanned < oldest->last_scanned))
2566 oldest = target;
2567 }
2568
2569 /* If we didn't find a match, then get a new network slot to initialize
2570 * with this beacon's information */
2571 if (&target->list == &ieee->network_list) {
2572 if (list_empty(&ieee->network_free_list)) {
2573 /* If there are no more slots, expire the oldest */
2574 list_del(&oldest->list);
2575 target = oldest;
2576 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2577 "network list.\n",
2578 escape_essid(target->ssid,
2579 target->ssid_len),
2580 target->bssid);
2581 } else {
2582 /* Otherwise just pull from the free list */
2583 target = list_entry(ieee->network_free_list.next,
2584 struct ieee80211_network, list);
2585 list_del(ieee->network_free_list.next);
2586 }
2587
2588
2589 #ifdef CONFIG_IEEE80211_DEBUG
2590 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2591 escape_essid(network.ssid,
2592 network.ssid_len),
2593 network.bssid,
2594 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2595 IEEE80211_STYPE_PROBE_RESP ?
2596 "PROBE RESPONSE" : "BEACON");
2597 #endif
2598 memcpy(target, &network, sizeof(*target));
2599 list_add_tail(&target->list, &ieee->network_list);
2600 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2601 ieee80211_softmac_new_net(ieee,&network);
2602 } else {
2603 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2604 escape_essid(target->ssid,
2605 target->ssid_len),
2606 target->bssid,
2607 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2608 IEEE80211_STYPE_PROBE_RESP ?
2609 "PROBE RESPONSE" : "BEACON");
2610
2611 /* we have an entry and we are going to update it. But this entry may
2612 * be already expired. In this case we do the same as we found a new
2613 * net and call the new_net handler
2614 */
2615 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2616 //YJ,add,080819,for hidden ap
2617 if(is_beacon(beacon->header.frame_ctl) == 0)
2618 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2619 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2620 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2621 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2622 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2623 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2624 renew = 1;
2625 //YJ,add,080819,for hidden ap,end
2626
2627 update_network(target, &network);
2628 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2629 ieee80211_softmac_new_net(ieee,&network);
2630 }
2631
2632 spin_unlock_irqrestore(&ieee->lock, flags);
2633 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2634 (ieee->state == IEEE80211_LINKED)) {
2635 if(ieee->handle_beacon != NULL) {
2636 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2637 }
2638 }
2639 }
2640
2641 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2642 struct ieee80211_hdr_4addr *header,
2643 struct ieee80211_rx_stats *stats)
2644 {
2645 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2646
2647 case IEEE80211_STYPE_BEACON:
2648 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2649 WLAN_FC_GET_STYPE(header->frame_ctl));
2650 IEEE80211_DEBUG_SCAN("Beacon\n");
2651 ieee80211_process_probe_response(
2652 ieee, (struct ieee80211_probe_response *)header, stats);
2653 break;
2654
2655 case IEEE80211_STYPE_PROBE_RESP:
2656 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2657 WLAN_FC_GET_STYPE(header->frame_ctl));
2658 IEEE80211_DEBUG_SCAN("Probe response\n");
2659 ieee80211_process_probe_response(
2660 ieee, (struct ieee80211_probe_response *)header, stats);
2661 break;
2662
2663 }
2664 }
2665
2666 EXPORT_SYMBOL(ieee80211_rx_mgt);
2667 EXPORT_SYMBOL(ieee80211_rx);
Tomato firmware and modifications.