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Merge tag 'staging-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[mirror_ubuntu-artful-kernel.git] / drivers / staging / rtl8192u / 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 <andrea.merello@gmail.com>
18
19 A special thanks goes to Realtek for their support !
20
21 ******************************************************************************/
22
23
24 #include <linux/compiler.h>
25 #include <linux/errno.h>
26 #include <linux/if_arp.h>
27 #include <linux/in6.h>
28 #include <linux/in.h>
29 #include <linux/ip.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/netdevice.h>
33 #include <linux/pci.h>
34 #include <linux/proc_fs.h>
35 #include <linux/skbuff.h>
36 #include <linux/slab.h>
37 #include <linux/tcp.h>
38 #include <linux/types.h>
39 #include <linux/wireless.h>
40 #include <linux/etherdevice.h>
41 #include <linux/uaccess.h>
42 #include <linux/ctype.h>
43
44 #include "ieee80211.h"
45 #include "dot11d.h"
46 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
47 struct sk_buff *skb,
48 struct ieee80211_rx_stats *rx_stats)
49 {
50 struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data;
51 u16 fc = le16_to_cpu(hdr->frame_ctl);
52
53 skb->dev = ieee->dev;
54 skb_reset_mac_header(skb);
55
56 skb_pull(skb, ieee80211_get_hdrlen(fc));
57 skb->pkt_type = PACKET_OTHERHOST;
58 skb->protocol = htons(ETH_P_80211_RAW);
59 memset(skb->cb, 0, sizeof(skb->cb));
60 netif_rx(skb);
61 }
62
63
64 /* Called only as a tasklet (software IRQ) */
65 static struct ieee80211_frag_entry *
66 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
67 unsigned int frag, u8 tid, u8 *src, u8 *dst)
68 {
69 struct ieee80211_frag_entry *entry;
70 int i;
71
72 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
73 entry = &ieee->frag_cache[tid][i];
74 if (entry->skb != NULL &&
75 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
76 IEEE80211_DEBUG_FRAG(
77 "expiring fragment cache entry "
78 "seq=%u last_frag=%u\n",
79 entry->seq, entry->last_frag);
80 dev_kfree_skb_any(entry->skb);
81 entry->skb = NULL;
82 }
83
84 if (entry->skb != NULL && entry->seq == seq &&
85 (entry->last_frag + 1 == frag || frag == -1) &&
86 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
87 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
88 return entry;
89 }
90
91 return NULL;
92 }
93
94 /* Called only as a tasklet (software IRQ) */
95 static struct sk_buff *
96 ieee80211_frag_cache_get(struct ieee80211_device *ieee,
97 struct rtl_80211_hdr_4addr *hdr)
98 {
99 struct sk_buff *skb = NULL;
100 u16 fc = le16_to_cpu(hdr->frame_ctl);
101 u16 sc = le16_to_cpu(hdr->seq_ctl);
102 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
103 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
104 struct ieee80211_frag_entry *entry;
105 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
106 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
107 u8 tid;
108
109 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
110 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
111 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
112 tid = UP2AC(tid);
113 tid ++;
114 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
115 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
116 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
117 tid = UP2AC(tid);
118 tid ++;
119 } else {
120 tid = 0;
121 }
122
123 if (frag == 0) {
124 /* Reserve enough space to fit maximum frame length */
125 skb = dev_alloc_skb(ieee->dev->mtu +
126 sizeof(struct rtl_80211_hdr_4addr) +
127 8 /* LLC */ +
128 2 /* alignment */ +
129 8 /* WEP */ +
130 ETH_ALEN /* WDS */ +
131 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
132 if (!skb)
133 return NULL;
134
135 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
136 ieee->frag_next_idx[tid]++;
137 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
138 ieee->frag_next_idx[tid] = 0;
139
140 if (entry->skb != NULL)
141 dev_kfree_skb_any(entry->skb);
142
143 entry->first_frag_time = jiffies;
144 entry->seq = seq;
145 entry->last_frag = frag;
146 entry->skb = skb;
147 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
148 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
149 } else {
150 /* received a fragment of a frame for which the head fragment
151 * should have already been received */
152 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
153 hdr->addr1);
154 if (entry != NULL) {
155 entry->last_frag = frag;
156 skb = entry->skb;
157 }
158 }
159
160 return skb;
161 }
162
163
164 /* Called only as a tasklet (software IRQ) */
165 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
166 struct rtl_80211_hdr_4addr *hdr)
167 {
168 u16 fc = le16_to_cpu(hdr->frame_ctl);
169 u16 sc = le16_to_cpu(hdr->seq_ctl);
170 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
171 struct ieee80211_frag_entry *entry;
172 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
173 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
174 u8 tid;
175
176 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
177 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
178 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
179 tid = UP2AC(tid);
180 tid ++;
181 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
182 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
183 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
184 tid = UP2AC(tid);
185 tid ++;
186 } else {
187 tid = 0;
188 }
189
190 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
191 hdr->addr1);
192
193 if (entry == NULL) {
194 IEEE80211_DEBUG_FRAG(
195 "could not invalidate fragment cache "
196 "entry (seq=%u)\n", seq);
197 return -1;
198 }
199
200 entry->skb = NULL;
201 return 0;
202 }
203
204
205
206 /* ieee80211_rx_frame_mgtmt
207 *
208 * Responsible for handling management control frames
209 *
210 * Called by ieee80211_rx */
211 static inline int
212 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
213 struct ieee80211_rx_stats *rx_stats, u16 type,
214 u16 stype)
215 {
216 /* On the struct stats definition there is written that
217 * this is not mandatory.... but seems that the probe
218 * response parser uses it
219 */
220 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
221
222 rx_stats->len = skb->len;
223 ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats);
224 /* if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) */
225 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))/* use ADDR1 to perform address matching for Management frames */
226 {
227 dev_kfree_skb_any(skb);
228 return 0;
229 }
230
231 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
232
233 dev_kfree_skb_any(skb);
234
235 return 0;
236
237 #ifdef NOT_YET
238 if (ieee->iw_mode == IW_MODE_MASTER) {
239 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
240 ieee->dev->name);
241 return 0;
242 /*
243 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
244 skb->data);*/
245 }
246
247 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
248 if (stype == WLAN_FC_STYPE_BEACON &&
249 ieee->iw_mode == IW_MODE_MASTER) {
250 struct sk_buff *skb2;
251 /* Process beacon frames also in kernel driver to
252 * update STA(AP) table statistics */
253 skb2 = skb_clone(skb, GFP_ATOMIC);
254 if (skb2)
255 hostap_rx(skb2->dev, skb2, rx_stats);
256 }
257
258 /* send management frames to the user space daemon for
259 * processing */
260 ieee->apdevstats.rx_packets++;
261 ieee->apdevstats.rx_bytes += skb->len;
262 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
263 return 0;
264 }
265
266 if (ieee->iw_mode == IW_MODE_MASTER) {
267 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
268 printk(KERN_DEBUG "%s: unknown management frame "
269 "(type=0x%02x, stype=0x%02x) dropped\n",
270 skb->dev->name, type, stype);
271 return -1;
272 }
273
274 hostap_rx(skb->dev, skb, rx_stats);
275 return 0;
276 }
277
278 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
279 "received in non-Host AP mode\n", skb->dev->name);
280 return -1;
281 #endif
282 }
283
284
285
286 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
287 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
288 static unsigned char rfc1042_header[] =
289 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
290 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
291 static unsigned char bridge_tunnel_header[] =
292 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
293 /* No encapsulation header if EtherType < 0x600 (=length) */
294
295 /* Called by ieee80211_rx_frame_decrypt */
296 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
297 struct sk_buff *skb, size_t hdrlen)
298 {
299 struct net_device *dev = ieee->dev;
300 u16 fc, ethertype;
301 struct rtl_80211_hdr_4addr *hdr;
302 u8 *pos;
303
304 if (skb->len < 24)
305 return 0;
306
307 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
308 fc = le16_to_cpu(hdr->frame_ctl);
309
310 /* check that the frame is unicast frame to us */
311 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
312 IEEE80211_FCTL_TODS &&
313 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
314 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
315 /* ToDS frame with own addr BSSID and DA */
316 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
317 IEEE80211_FCTL_FROMDS &&
318 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
319 /* FromDS frame with own addr as DA */
320 } else
321 return 0;
322
323 if (skb->len < 24 + 8)
324 return 0;
325
326 /* check for port access entity Ethernet type */
327 // pos = skb->data + 24;
328 pos = skb->data + hdrlen;
329 ethertype = (pos[6] << 8) | pos[7];
330 if (ethertype == ETH_P_PAE)
331 return 1;
332
333 return 0;
334 }
335
336 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
337 static inline int
338 ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
339 struct ieee80211_crypt_data *crypt)
340 {
341 struct rtl_80211_hdr_4addr *hdr;
342 int res, hdrlen;
343
344 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
345 return 0;
346 if (ieee->hwsec_active)
347 {
348 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
349 tcb_desc->bHwSec = 1;
350 }
351 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
352 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
353
354 if (ieee->tkip_countermeasures &&
355 strcmp(crypt->ops->name, "TKIP") == 0) {
356 if (net_ratelimit()) {
357 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
358 "received packet from %pM\n",
359 ieee->dev->name, hdr->addr2);
360 }
361 return -1;
362 }
363
364 atomic_inc(&crypt->refcnt);
365 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
366 atomic_dec(&crypt->refcnt);
367 if (res < 0) {
368 IEEE80211_DEBUG_DROP(
369 "decryption failed (SA=%pM"
370 ") res=%d\n", hdr->addr2, res);
371 if (res == -2)
372 IEEE80211_DEBUG_DROP("Decryption failed ICV "
373 "mismatch (key %d)\n",
374 skb->data[hdrlen + 3] >> 6);
375 ieee->ieee_stats.rx_discards_undecryptable++;
376 return -1;
377 }
378
379 return res;
380 }
381
382
383 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
384 static inline int
385 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb,
386 int keyidx, struct ieee80211_crypt_data *crypt)
387 {
388 struct rtl_80211_hdr_4addr *hdr;
389 int res, hdrlen;
390
391 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
392 return 0;
393 if (ieee->hwsec_active)
394 {
395 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
396 tcb_desc->bHwSec = 1;
397 }
398
399 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
400 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
401
402 atomic_inc(&crypt->refcnt);
403 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
404 atomic_dec(&crypt->refcnt);
405 if (res < 0) {
406 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
407 " (SA=%pM keyidx=%d)\n",
408 ieee->dev->name, hdr->addr2, keyidx);
409 return -1;
410 }
411
412 return 0;
413 }
414
415
416 /* this function is stolen from ipw2200 driver*/
417 #define IEEE_PACKET_RETRY_TIME (5*HZ)
418 static int is_duplicate_packet(struct ieee80211_device *ieee,
419 struct rtl_80211_hdr_4addr *header)
420 {
421 u16 fc = le16_to_cpu(header->frame_ctl);
422 u16 sc = le16_to_cpu(header->seq_ctl);
423 u16 seq = WLAN_GET_SEQ_SEQ(sc);
424 u16 frag = WLAN_GET_SEQ_FRAG(sc);
425 u16 *last_seq, *last_frag;
426 unsigned long *last_time;
427 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
428 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
429 u8 tid;
430
431
432 //TO2DS and QoS
433 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
434 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header;
435 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
436 tid = UP2AC(tid);
437 tid ++;
438 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
439 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header;
440 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
441 tid = UP2AC(tid);
442 tid ++;
443 } else { // no QoS
444 tid = 0;
445 }
446
447 switch (ieee->iw_mode) {
448 case IW_MODE_ADHOC:
449 {
450 struct list_head *p;
451 struct ieee_ibss_seq *entry = NULL;
452 u8 *mac = header->addr2;
453 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
454
455 list_for_each(p, &ieee->ibss_mac_hash[index]) {
456 entry = list_entry(p, struct ieee_ibss_seq, list);
457 if (!memcmp(entry->mac, mac, ETH_ALEN))
458 break;
459 }
460 // if (memcmp(entry->mac, mac, ETH_ALEN)){
461 if (p == &ieee->ibss_mac_hash[index]) {
462 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
463 if (!entry)
464 return 0;
465 memcpy(entry->mac, mac, ETH_ALEN);
466 entry->seq_num[tid] = seq;
467 entry->frag_num[tid] = frag;
468 entry->packet_time[tid] = jiffies;
469 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
470 return 0;
471 }
472 last_seq = &entry->seq_num[tid];
473 last_frag = &entry->frag_num[tid];
474 last_time = &entry->packet_time[tid];
475 break;
476 }
477
478 case IW_MODE_INFRA:
479 last_seq = &ieee->last_rxseq_num[tid];
480 last_frag = &ieee->last_rxfrag_num[tid];
481 last_time = &ieee->last_packet_time[tid];
482
483 break;
484 default:
485 return 0;
486 }
487
488 // if(tid != 0) {
489 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
490 // }
491 if ((*last_seq == seq) &&
492 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
493 if (*last_frag == frag)
494 goto drop;
495 if (*last_frag + 1 != frag)
496 /* out-of-order fragment */
497 goto drop;
498 } else
499 *last_seq = seq;
500
501 *last_frag = frag;
502 *last_time = jiffies;
503 return 0;
504
505 drop:
506 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
507
508 return 1;
509 }
510
511 static bool AddReorderEntry(PRX_TS_RECORD pTS, PRX_REORDER_ENTRY pReorderEntry)
512 {
513 struct list_head *pList = &pTS->RxPendingPktList;
514 while(pList->next != &pTS->RxPendingPktList)
515 {
516 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
517 {
518 pList = pList->next;
519 }
520 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
521 {
522 return false;
523 }
524 else
525 {
526 break;
527 }
528 }
529 pReorderEntry->List.next = pList->next;
530 pReorderEntry->List.next->prev = &pReorderEntry->List;
531 pReorderEntry->List.prev = pList;
532 pList->next = &pReorderEntry->List;
533
534 return true;
535 }
536
537 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index)
538 {
539 u8 i = 0 , j=0;
540 u16 ethertype;
541 // if(index > 1)
542 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__func__,index);
543 for(j = 0; j<index; j++)
544 {
545 //added by amy for reorder
546 struct ieee80211_rxb *prxb = prxbIndicateArray[j];
547 for(i = 0; i<prxb->nr_subframes; i++) {
548 struct sk_buff *sub_skb = prxb->subframes[i];
549
550 /* convert hdr + possible LLC headers into Ethernet header */
551 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
552 if (sub_skb->len >= 8 &&
553 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
554 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
555 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
556 /* remove RFC1042 or Bridge-Tunnel encapsulation and
557 * replace EtherType */
558 skb_pull(sub_skb, SNAP_SIZE);
559 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
560 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
561 } else {
562 u16 len;
563 /* Leave Ethernet header part of hdr and full payload */
564 len = htons(sub_skb->len);
565 memcpy(skb_push(sub_skb, 2), &len, 2);
566 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
567 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
568 }
569 //stats->rx_packets++;
570 //stats->rx_bytes += sub_skb->len;
571
572 /* Indicat the packets to upper layer */
573 if (sub_skb) {
574 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
575 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
576 sub_skb->dev = ieee->dev;
577 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
578 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
579 ieee->last_rx_ps_time = jiffies;
580 netif_rx(sub_skb);
581 }
582 }
583 kfree(prxb);
584 prxb = NULL;
585 }
586 }
587
588
589 static void RxReorderIndicatePacket(struct ieee80211_device *ieee,
590 struct ieee80211_rxb *prxb,
591 PRX_TS_RECORD pTS, u16 SeqNum)
592 {
593 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
594 PRX_REORDER_ENTRY pReorderEntry = NULL;
595 struct ieee80211_rxb **prxbIndicateArray;
596 u8 WinSize = pHTInfo->RxReorderWinSize;
597 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
598 u8 index = 0;
599 bool bMatchWinStart = false, bPktInBuf = false;
600 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize);
601
602 prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) *
603 REORDER_WIN_SIZE, GFP_KERNEL);
604 if (!prxbIndicateArray)
605 return;
606
607 /* Rx Reorder initialize condition.*/
608 if (pTS->RxIndicateSeq == 0xffff) {
609 pTS->RxIndicateSeq = SeqNum;
610 }
611
612 /* Drop out the packet which SeqNum is smaller than WinStart */
613 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
614 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
615 pTS->RxIndicateSeq, SeqNum);
616 pHTInfo->RxReorderDropCounter++;
617 {
618 int i;
619 for(i =0; i < prxb->nr_subframes; i++) {
620 dev_kfree_skb(prxb->subframes[i]);
621 }
622 kfree(prxb);
623 prxb = NULL;
624 }
625
626 kfree(prxbIndicateArray);
627 return;
628 }
629
630 /*
631 * Sliding window manipulation. Conditions includes:
632 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
633 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
634 */
635 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
636 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
637 bMatchWinStart = true;
638 } else if(SN_LESS(WinEnd, SeqNum)) {
639 if(SeqNum >= (WinSize - 1)) {
640 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
641 } else {
642 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
643 }
644 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
645 }
646
647 /*
648 * Indication process.
649 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
650 * with the SeqNum smaller than latest WinStart and buffer other packets.
651 */
652 /* For Rx Reorder condition:
653 * 1. All packets with SeqNum smaller than WinStart => Indicate
654 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
655 */
656 if(bMatchWinStart) {
657 /* Current packet is going to be indicated.*/
658 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
659 pTS->RxIndicateSeq, SeqNum);
660 prxbIndicateArray[0] = prxb;
661 // printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum);
662 index = 1;
663 } else {
664 /* Current packet is going to be inserted into pending list.*/
665 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__);
666 if(!list_empty(&ieee->RxReorder_Unused_List)) {
667 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
668 list_del_init(&pReorderEntry->List);
669
670 /* Make a reorder entry and insert into a the packet list.*/
671 pReorderEntry->SeqNum = SeqNum;
672 pReorderEntry->prxb = prxb;
673 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
674
675 if(!AddReorderEntry(pTS, pReorderEntry)) {
676 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
677 __func__, pTS->RxIndicateSeq, SeqNum);
678 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
679 {
680 int i;
681 for(i =0; i < prxb->nr_subframes; i++) {
682 dev_kfree_skb(prxb->subframes[i]);
683 }
684 kfree(prxb);
685 prxb = NULL;
686 }
687 } else {
688 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
689 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
690 }
691 }
692 else {
693 /*
694 * Packets are dropped if there is not enough reorder entries.
695 * This part shall be modified!! We can just indicate all the
696 * packets in buffer and get reorder entries.
697 */
698 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
699 {
700 int i;
701 for(i =0; i < prxb->nr_subframes; i++) {
702 dev_kfree_skb(prxb->subframes[i]);
703 }
704 kfree(prxb);
705 prxb = NULL;
706 }
707 }
708 }
709
710 /* Check if there is any packet need indicate.*/
711 while(!list_empty(&pTS->RxPendingPktList)) {
712 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
713 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
714 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
715 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
716 {
717 /* This protect buffer from overflow. */
718 if (index >= REORDER_WIN_SIZE) {
719 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
720 bPktInBuf = true;
721 break;
722 }
723
724 list_del_init(&pReorderEntry->List);
725
726 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
727 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
728
729 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
730 prxbIndicateArray[index] = pReorderEntry->prxb;
731 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
732 index++;
733
734 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
735 } else {
736 bPktInBuf = true;
737 break;
738 }
739 }
740
741 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
742 if (index>0) {
743 // Cancel previous pending timer.
744 // del_timer_sync(&pTS->RxPktPendingTimer);
745 pTS->RxTimeoutIndicateSeq = 0xffff;
746
747 // Indicate packets
748 if(index>REORDER_WIN_SIZE){
749 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
750 kfree(prxbIndicateArray);
751 return;
752 }
753 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
754 }
755
756 if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
757 // Set new pending timer.
758 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
759 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
760 if(timer_pending(&pTS->RxPktPendingTimer))
761 del_timer_sync(&pTS->RxPktPendingTimer);
762 pTS->RxPktPendingTimer.expires = jiffies +
763 msecs_to_jiffies(pHTInfo->RxReorderPendingTime);
764 add_timer(&pTS->RxPktPendingTimer);
765 }
766
767 kfree(prxbIndicateArray);
768 }
769
770 static u8 parse_subframe(struct sk_buff *skb,
771 struct ieee80211_rx_stats *rx_stats,
772 struct ieee80211_rxb *rxb, u8 *src, u8 *dst)
773 {
774 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
775 u16 fc = le16_to_cpu(hdr->frame_ctl);
776
777 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr);
778 u16 ChkLength;
779 bool bIsAggregateFrame = false;
780 u16 nSubframe_Length;
781 u8 nPadding_Length = 0;
782 u16 SeqNum=0;
783
784 struct sk_buff *sub_skb;
785 u8 *data_ptr;
786 /* just for debug purpose */
787 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
788
789 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
790 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
791 bIsAggregateFrame = true;
792 }
793
794 if (IEEE80211_QOS_HAS_SEQ(fc)) {
795 LLCOffset += 2;
796 }
797
798 if (rx_stats->bContainHTC) {
799 LLCOffset += sHTCLng;
800 }
801 // Null packet, don't indicate it to upper layer
802 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
803
804 if (skb->len <= ChkLength)
805 return 0;
806
807 skb_pull(skb, LLCOffset);
808
809 if(!bIsAggregateFrame) {
810 rxb->nr_subframes = 1;
811 #ifdef JOHN_NOCPY
812 rxb->subframes[0] = skb;
813 #else
814 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
815 #endif
816
817 memcpy(rxb->src,src,ETH_ALEN);
818 memcpy(rxb->dst,dst,ETH_ALEN);
819 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
820 return 1;
821 } else {
822 rxb->nr_subframes = 0;
823 memcpy(rxb->src,src,ETH_ALEN);
824 memcpy(rxb->dst,dst,ETH_ALEN);
825 while(skb->len > ETHERNET_HEADER_SIZE) {
826 /* Offset 12 denote 2 mac address */
827 nSubframe_Length = *((u16 *)(skb->data + 12));
828 //==m==>change the length order
829 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
830
831 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
832 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
833 __func__, rxb->nr_subframes);
834 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
835 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
836 printk("The Packet SeqNum is %d\n",SeqNum);
837 return 0;
838 }
839
840 /* move the data point to data content */
841 skb_pull(skb, ETHERNET_HEADER_SIZE);
842
843 #ifdef JOHN_NOCPY
844 sub_skb = skb_clone(skb, GFP_ATOMIC);
845 sub_skb->len = nSubframe_Length;
846 sub_skb->tail = sub_skb->data + nSubframe_Length;
847 #else
848 /* Allocate new skb for releasing to upper layer */
849 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
850 if (!sub_skb)
851 return 0;
852 skb_reserve(sub_skb, 12);
853 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
854 memcpy(data_ptr, skb->data, nSubframe_Length);
855 #endif
856 rxb->subframes[rxb->nr_subframes++] = sub_skb;
857 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
858 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
859 break;
860 }
861 skb_pull(skb, nSubframe_Length);
862
863 if (skb->len != 0) {
864 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
865 if (nPadding_Length == 4) {
866 nPadding_Length = 0;
867 }
868
869 if (skb->len < nPadding_Length) {
870 return 0;
871 }
872
873 skb_pull(skb, nPadding_Length);
874 }
875 }
876 #ifdef JOHN_NOCPY
877 dev_kfree_skb(skb);
878 #endif
879 //{just for debug added by david
880 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
881 //}
882 return rxb->nr_subframes;
883 }
884 }
885
886 /* All received frames are sent to this function. @skb contains the frame in
887 * IEEE 802.11 format, i.e., in the format it was sent over air.
888 * This function is called only as a tasklet (software IRQ). */
889 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
890 struct ieee80211_rx_stats *rx_stats)
891 {
892 struct net_device *dev = ieee->dev;
893 struct rtl_80211_hdr_4addr *hdr;
894 //struct rtl_80211_hdr_3addrqos *hdr;
895
896 size_t hdrlen;
897 u16 fc, type, stype, sc;
898 struct net_device_stats *stats;
899 unsigned int frag;
900 u8 *payload;
901 u16 ethertype;
902 //added by amy for reorder
903 u8 TID = 0;
904 u16 SeqNum = 0;
905 PRX_TS_RECORD pTS = NULL;
906 //bool bIsAggregateFrame = false;
907 //added by amy for reorder
908 #ifdef NOT_YET
909 struct net_device *wds = NULL;
910 struct net_device *wds = NULL;
911 int from_assoc_ap = 0;
912 void *sta = NULL;
913 #endif
914 // u16 qos_ctl = 0;
915 u8 dst[ETH_ALEN];
916 u8 src[ETH_ALEN];
917 u8 bssid[ETH_ALEN];
918 struct ieee80211_crypt_data *crypt = NULL;
919 int keyidx = 0;
920
921 int i;
922 struct ieee80211_rxb *rxb = NULL;
923 // cheat the the hdr type
924 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
925 stats = &ieee->stats;
926
927 if (skb->len < 10) {
928 printk(KERN_INFO "%s: SKB length < 10\n",
929 dev->name);
930 goto rx_dropped;
931 }
932
933 fc = le16_to_cpu(hdr->frame_ctl);
934 type = WLAN_FC_GET_TYPE(fc);
935 stype = WLAN_FC_GET_STYPE(fc);
936 sc = le16_to_cpu(hdr->seq_ctl);
937
938 frag = WLAN_GET_SEQ_FRAG(sc);
939 hdrlen = ieee80211_get_hdrlen(fc);
940
941 if (HTCCheck(ieee, skb->data))
942 {
943 if(net_ratelimit())
944 printk("find HTCControl\n");
945 hdrlen += 4;
946 rx_stats->bContainHTC = true;
947 }
948
949 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
950 #ifdef NOT_YET
951 /* Put this code here so that we avoid duplicating it in all
952 * Rx paths. - Jean II */
953 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
954 /* If spy monitoring on */
955 if (iface->spy_data.spy_number > 0) {
956 struct iw_quality wstats;
957 wstats.level = rx_stats->rssi;
958 wstats.noise = rx_stats->noise;
959 wstats.updated = 6; /* No qual value */
960 /* Update spy records */
961 wireless_spy_update(dev, hdr->addr2, &wstats);
962 }
963 #endif /* IW_WIRELESS_SPY */
964 hostap_update_rx_stats(local->ap, hdr, rx_stats);
965 #endif
966
967 if (ieee->iw_mode == IW_MODE_MONITOR) {
968 ieee80211_monitor_rx(ieee, skb, rx_stats);
969 stats->rx_packets++;
970 stats->rx_bytes += skb->len;
971 return 1;
972 }
973
974 if (ieee->host_decrypt) {
975 int idx = 0;
976 if (skb->len >= hdrlen + 3)
977 idx = skb->data[hdrlen + 3] >> 6;
978 crypt = ieee->crypt[idx];
979 #ifdef NOT_YET
980 sta = NULL;
981
982 /* Use station specific key to override default keys if the
983 * receiver address is a unicast address ("individual RA"). If
984 * bcrx_sta_key parameter is set, station specific key is used
985 * even with broad/multicast targets (this is against IEEE
986 * 802.11, but makes it easier to use different keys with
987 * stations that do not support WEP key mapping). */
988
989 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
990 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
991 &sta);
992 #endif
993
994 /* allow NULL decrypt to indicate an station specific override
995 * for default encryption */
996 if (crypt && (crypt->ops == NULL ||
997 crypt->ops->decrypt_mpdu == NULL))
998 crypt = NULL;
999
1000 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1001 /* This seems to be triggered by some (multicast?)
1002 * frames from other than current BSS, so just drop the
1003 * frames silently instead of filling system log with
1004 * these reports. */
1005 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1006 " (SA=%pM)\n",
1007 hdr->addr2);
1008 ieee->ieee_stats.rx_discards_undecryptable++;
1009 goto rx_dropped;
1010 }
1011 }
1012
1013 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1014 goto rx_dropped;
1015
1016 // if QoS enabled, should check the sequence for each of the AC
1017 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
1018 if (is_duplicate_packet(ieee, hdr))
1019 goto rx_dropped;
1020
1021 }
1022 else
1023 {
1024 PRX_TS_RECORD pRxTS = NULL;
1025 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid);
1026 if(GetTs(
1027 ieee,
1028 (PTS_COMMON_INFO *) &pRxTS,
1029 hdr->addr2,
1030 Frame_QoSTID((u8 *)(skb->data)),
1031 RX_DIR,
1032 true))
1033 {
1034
1035 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__func__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc));
1036 if ((fc & (1<<11)) &&
1037 (frag == pRxTS->RxLastFragNum) &&
1038 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
1039 goto rx_dropped;
1040 }
1041 else
1042 {
1043 pRxTS->RxLastFragNum = frag;
1044 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1045 }
1046 }
1047 else
1048 {
1049 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
1050 goto rx_dropped;
1051 }
1052 }
1053 if (type == IEEE80211_FTYPE_MGMT) {
1054
1055
1056 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1057 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1058 goto rx_dropped;
1059 else
1060 goto rx_exit;
1061 }
1062
1063 /* Data frame - extract src/dst addresses */
1064 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1065 case IEEE80211_FCTL_FROMDS:
1066 memcpy(dst, hdr->addr1, ETH_ALEN);
1067 memcpy(src, hdr->addr3, ETH_ALEN);
1068 memcpy(bssid, hdr->addr2, ETH_ALEN);
1069 break;
1070 case IEEE80211_FCTL_TODS:
1071 memcpy(dst, hdr->addr3, ETH_ALEN);
1072 memcpy(src, hdr->addr2, ETH_ALEN);
1073 memcpy(bssid, hdr->addr1, ETH_ALEN);
1074 break;
1075 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1076 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1077 goto rx_dropped;
1078 memcpy(dst, hdr->addr3, ETH_ALEN);
1079 memcpy(src, hdr->addr4, ETH_ALEN);
1080 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1081 break;
1082 default:
1083 memcpy(dst, hdr->addr1, ETH_ALEN);
1084 memcpy(src, hdr->addr2, ETH_ALEN);
1085 memcpy(bssid, hdr->addr3, ETH_ALEN);
1086 break;
1087 }
1088
1089 #ifdef NOT_YET
1090 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1091 goto rx_dropped;
1092 if (wds) {
1093 skb->dev = dev = wds;
1094 stats = hostap_get_stats(dev);
1095 }
1096
1097 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1098 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1099 ieee->stadev &&
1100 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1101 /* Frame from BSSID of the AP for which we are a client */
1102 skb->dev = dev = ieee->stadev;
1103 stats = hostap_get_stats(dev);
1104 from_assoc_ap = 1;
1105 }
1106
1107 if ((ieee->iw_mode == IW_MODE_MASTER ||
1108 ieee->iw_mode == IW_MODE_REPEAT) &&
1109 !from_assoc_ap) {
1110 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1111 wds != NULL)) {
1112 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1113 case AP_RX_CONTINUE:
1114 break;
1115 case AP_RX_DROP:
1116 goto rx_dropped;
1117 case AP_RX_EXIT:
1118 goto rx_exit;
1119 }
1120 }
1121 #endif
1122 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1123 /* Nullfunc frames may have PS-bit set, so they must be passed to
1124 * hostap_handle_sta_rx() before being dropped here. */
1125 if (stype != IEEE80211_STYPE_DATA &&
1126 stype != IEEE80211_STYPE_DATA_CFACK &&
1127 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1128 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1129 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1130 ) {
1131 if (stype != IEEE80211_STYPE_NULLFUNC)
1132 IEEE80211_DEBUG_DROP(
1133 "RX: dropped data frame "
1134 "with no data (type=0x%02x, "
1135 "subtype=0x%02x, len=%d)\n",
1136 type, stype, skb->len);
1137 goto rx_dropped;
1138 }
1139 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1140 goto rx_dropped;
1141
1142 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1143
1144 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1145 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1146 {
1147 printk("decrypt frame error\n");
1148 goto rx_dropped;
1149 }
1150
1151
1152 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1153
1154 /* skb: hdr + (possibly fragmented) plaintext payload */
1155 // PR: FIXME: hostap has additional conditions in the "if" below:
1156 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1157 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1158 int flen;
1159 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1160 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1161
1162 if (!frag_skb) {
1163 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1164 "Rx cannot get skb from fragment "
1165 "cache (morefrag=%d seq=%u frag=%u)\n",
1166 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1167 WLAN_GET_SEQ_SEQ(sc), frag);
1168 goto rx_dropped;
1169 }
1170 flen = skb->len;
1171 if (frag != 0)
1172 flen -= hdrlen;
1173
1174 if (frag_skb->tail + flen > frag_skb->end) {
1175 printk(KERN_WARNING "%s: host decrypted and "
1176 "reassembled frame did not fit skb\n",
1177 dev->name);
1178 ieee80211_frag_cache_invalidate(ieee, hdr);
1179 goto rx_dropped;
1180 }
1181
1182 if (frag == 0) {
1183 /* copy first fragment (including full headers) into
1184 * beginning of the fragment cache skb */
1185 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1186 } else {
1187 /* append frame payload to the end of the fragment
1188 * cache skb */
1189 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1190 flen);
1191 }
1192 dev_kfree_skb_any(skb);
1193 skb = NULL;
1194
1195 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1196 /* more fragments expected - leave the skb in fragment
1197 * cache for now; it will be delivered to upper layers
1198 * after all fragments have been received */
1199 goto rx_exit;
1200 }
1201
1202 /* this was the last fragment and the frame will be
1203 * delivered, so remove skb from fragment cache */
1204 skb = frag_skb;
1205 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1206 ieee80211_frag_cache_invalidate(ieee, hdr);
1207 }
1208
1209 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1210 * encrypted/authenticated */
1211 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1212 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1213 {
1214 printk("==>decrypt msdu error\n");
1215 goto rx_dropped;
1216 }
1217
1218 //added by amy for AP roaming
1219 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1220 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1221
1222 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1223 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1224 if (/*ieee->ieee802_1x &&*/
1225 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1226
1227 #ifdef CONFIG_IEEE80211_DEBUG
1228 /* pass unencrypted EAPOL frames even if encryption is
1229 * configured */
1230 struct eapol *eap = (struct eapol *)(skb->data +
1231 24);
1232 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1233 eap_get_type(eap->type));
1234 #endif
1235 } else {
1236 IEEE80211_DEBUG_DROP(
1237 "encryption configured, but RX "
1238 "frame not encrypted (SA=%pM)\n",
1239 hdr->addr2);
1240 goto rx_dropped;
1241 }
1242 }
1243
1244 #ifdef CONFIG_IEEE80211_DEBUG
1245 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1246 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1247 struct eapol *eap = (struct eapol *)(skb->data +
1248 24);
1249 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1250 eap_get_type(eap->type));
1251 }
1252 #endif
1253
1254 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1255 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1256 IEEE80211_DEBUG_DROP(
1257 "dropped unencrypted RX data "
1258 "frame from %pM"
1259 " (drop_unencrypted=1)\n",
1260 hdr->addr2);
1261 goto rx_dropped;
1262 }
1263 /*
1264 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1265 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1266 }
1267 */
1268 //added by amy for reorder
1269 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1270 && !is_multicast_ether_addr(hdr->addr1))
1271 {
1272 TID = Frame_QoSTID(skb->data);
1273 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1274 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true);
1275 if (TID !=0 && TID !=3)
1276 {
1277 ieee->bis_any_nonbepkts = true;
1278 }
1279 }
1280 //added by amy for reorder
1281 /* skb: hdr + (possible reassembled) full plaintext payload */
1282 payload = skb->data + hdrlen;
1283 //ethertype = (payload[6] << 8) | payload[7];
1284 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1285 if (!rxb)
1286 goto rx_dropped;
1287 /* to parse amsdu packets */
1288 /* qos data packets & reserved bit is 1 */
1289 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
1290 /* only to free rxb, and not submit the packets to upper layer */
1291 for(i =0; i < rxb->nr_subframes; i++) {
1292 dev_kfree_skb(rxb->subframes[i]);
1293 }
1294 kfree(rxb);
1295 rxb = NULL;
1296 goto rx_dropped;
1297 }
1298
1299 //added by amy for reorder
1300 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){
1301 //added by amy for reorder
1302 for(i = 0; i<rxb->nr_subframes; i++) {
1303 struct sk_buff *sub_skb = rxb->subframes[i];
1304
1305 if (sub_skb) {
1306 /* convert hdr + possible LLC headers into Ethernet header */
1307 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1308 if (sub_skb->len >= 8 &&
1309 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1310 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1311 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1312 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1313 * replace EtherType */
1314 skb_pull(sub_skb, SNAP_SIZE);
1315 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1316 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1317 } else {
1318 u16 len;
1319 /* Leave Ethernet header part of hdr and full payload */
1320 len = htons(sub_skb->len);
1321 memcpy(skb_push(sub_skb, 2), &len, 2);
1322 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1323 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1324 }
1325
1326 stats->rx_packets++;
1327 stats->rx_bytes += sub_skb->len;
1328 if (is_multicast_ether_addr(dst)) {
1329 stats->multicast++;
1330 }
1331
1332 /* Indicat the packets to upper layer */
1333 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1334 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1335 sub_skb->dev = dev;
1336 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1337 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1338 ieee->last_rx_ps_time = jiffies;
1339 netif_rx(sub_skb);
1340 }
1341 }
1342 kfree(rxb);
1343 rxb = NULL;
1344
1345 }
1346 else
1347 {
1348 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
1349 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1350 }
1351 #ifndef JOHN_NOCPY
1352 dev_kfree_skb(skb);
1353 #endif
1354
1355 rx_exit:
1356 #ifdef NOT_YET
1357 if (sta)
1358 hostap_handle_sta_release(sta);
1359 #endif
1360 return 1;
1361
1362 rx_dropped:
1363 kfree(rxb);
1364 rxb = NULL;
1365 stats->rx_dropped++;
1366
1367 /* Returning 0 indicates to caller that we have not handled the SKB--
1368 * so it is still allocated and can be used again by underlying
1369 * hardware as a DMA target */
1370 return 0;
1371 }
1372 EXPORT_SYMBOL(ieee80211_rx);
1373
1374 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1375
1376 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1377
1378 /*
1379 * Make the structure we read from the beacon packet to have
1380 * the right values
1381 */
1382 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1383 *info_element, int sub_type)
1384 {
1385
1386 if (info_element->qui_subtype != sub_type)
1387 return -1;
1388 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1389 return -1;
1390 if (info_element->qui_type != QOS_OUI_TYPE)
1391 return -1;
1392 if (info_element->version != QOS_VERSION_1)
1393 return -1;
1394
1395 return 0;
1396 }
1397
1398
1399 /*
1400 * Parse a QoS parameter element
1401 */
1402 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1403 *element_param, struct ieee80211_info_element
1404 *info_element)
1405 {
1406 int ret = 0;
1407 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1408
1409 if ((info_element == NULL) || (element_param == NULL))
1410 return -1;
1411
1412 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1413 memcpy(element_param->info_element.qui, info_element->data,
1414 info_element->len);
1415 element_param->info_element.elementID = info_element->id;
1416 element_param->info_element.length = info_element->len;
1417 } else
1418 ret = -1;
1419 if (ret == 0)
1420 ret = ieee80211_verify_qos_info(&element_param->info_element,
1421 QOS_OUI_PARAM_SUB_TYPE);
1422 return ret;
1423 }
1424
1425 /*
1426 * Parse a QoS information element
1427 */
1428 static int ieee80211_read_qos_info_element(struct
1429 ieee80211_qos_information_element
1430 *element_info, struct ieee80211_info_element
1431 *info_element)
1432 {
1433 int ret = 0;
1434 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1435
1436 if (element_info == NULL)
1437 return -1;
1438 if (info_element == NULL)
1439 return -1;
1440
1441 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1442 memcpy(element_info->qui, info_element->data,
1443 info_element->len);
1444 element_info->elementID = info_element->id;
1445 element_info->length = info_element->len;
1446 } else
1447 ret = -1;
1448
1449 if (ret == 0)
1450 ret = ieee80211_verify_qos_info(element_info,
1451 QOS_OUI_INFO_SUB_TYPE);
1452 return ret;
1453 }
1454
1455
1456 /*
1457 * Write QoS parameters from the ac parameters.
1458 */
1459 static int ieee80211_qos_convert_ac_to_parameters(struct
1460 ieee80211_qos_parameter_info
1461 *param_elm, struct
1462 ieee80211_qos_parameters
1463 *qos_param)
1464 {
1465 int i;
1466 struct ieee80211_qos_ac_parameter *ac_params;
1467 u8 aci;
1468 //u8 cw_min;
1469 //u8 cw_max;
1470
1471 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1472 ac_params = &(param_elm->ac_params_record[i]);
1473
1474 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1475
1476 if(aci >= QOS_QUEUE_NUM)
1477 continue;
1478 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1479
1480 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1481 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1482
1483 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1484
1485 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1486
1487 qos_param->flag[aci] =
1488 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1489 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1490 }
1491 return 0;
1492 }
1493
1494 /*
1495 * we have a generic data element which it may contain QoS information or
1496 * parameters element. check the information element length to decide
1497 * which type to read
1498 */
1499 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1500 *info_element,
1501 struct ieee80211_network *network)
1502 {
1503 int rc = 0;
1504 struct ieee80211_qos_parameters *qos_param = NULL;
1505 struct ieee80211_qos_information_element qos_info_element;
1506
1507 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1508
1509 if (rc == 0) {
1510 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1511 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1512 } else {
1513 struct ieee80211_qos_parameter_info param_element;
1514
1515 rc = ieee80211_read_qos_param_element(&param_element,
1516 info_element);
1517 if (rc == 0) {
1518 qos_param = &(network->qos_data.parameters);
1519 ieee80211_qos_convert_ac_to_parameters(&param_element,
1520 qos_param);
1521 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1522 network->qos_data.param_count =
1523 param_element.info_element.ac_info & 0x0F;
1524 }
1525 }
1526
1527 if (rc == 0) {
1528 IEEE80211_DEBUG_QOS("QoS is supported\n");
1529 network->qos_data.supported = 1;
1530 }
1531 return rc;
1532 }
1533
1534 #ifdef CONFIG_IEEE80211_DEBUG
1535 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1536
1537 static const char *get_info_element_string(u16 id)
1538 {
1539 switch (id) {
1540 MFIE_STRING(SSID);
1541 MFIE_STRING(RATES);
1542 MFIE_STRING(FH_SET);
1543 MFIE_STRING(DS_SET);
1544 MFIE_STRING(CF_SET);
1545 MFIE_STRING(TIM);
1546 MFIE_STRING(IBSS_SET);
1547 MFIE_STRING(COUNTRY);
1548 MFIE_STRING(HOP_PARAMS);
1549 MFIE_STRING(HOP_TABLE);
1550 MFIE_STRING(REQUEST);
1551 MFIE_STRING(CHALLENGE);
1552 MFIE_STRING(POWER_CONSTRAINT);
1553 MFIE_STRING(POWER_CAPABILITY);
1554 MFIE_STRING(TPC_REQUEST);
1555 MFIE_STRING(TPC_REPORT);
1556 MFIE_STRING(SUPP_CHANNELS);
1557 MFIE_STRING(CSA);
1558 MFIE_STRING(MEASURE_REQUEST);
1559 MFIE_STRING(MEASURE_REPORT);
1560 MFIE_STRING(QUIET);
1561 MFIE_STRING(IBSS_DFS);
1562 // MFIE_STRING(ERP_INFO);
1563 MFIE_STRING(RSN);
1564 MFIE_STRING(RATES_EX);
1565 MFIE_STRING(GENERIC);
1566 MFIE_STRING(QOS_PARAMETER);
1567 default:
1568 return "UNKNOWN";
1569 }
1570 }
1571 #endif
1572
1573 static inline void ieee80211_extract_country_ie(
1574 struct ieee80211_device *ieee,
1575 struct ieee80211_info_element *info_element,
1576 struct ieee80211_network *network,
1577 u8 *addr2
1578 )
1579 {
1580 if (IS_DOT11D_ENABLE(ieee))
1581 {
1582 if (info_element->len!= 0)
1583 {
1584 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1585 network->CountryIeLen = info_element->len;
1586
1587 if (!IS_COUNTRY_IE_VALID(ieee))
1588 {
1589 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1590 }
1591 }
1592
1593 //
1594 // 070305, rcnjko: I update country IE watch dog here because
1595 // some AP (e.g. Cisco 1242) don't include country IE in their
1596 // probe response frame.
1597 //
1598 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
1599 {
1600 UPDATE_CIE_WATCHDOG(ieee);
1601 }
1602 }
1603
1604 }
1605
1606 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1607 struct ieee80211_info_element *info_element,
1608 u16 length,
1609 struct ieee80211_network *network,
1610 struct ieee80211_rx_stats *stats)
1611 {
1612 u8 i;
1613 short offset;
1614 u16 tmp_htcap_len=0;
1615 u16 tmp_htinfo_len=0;
1616 u16 ht_realtek_agg_len=0;
1617 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1618 // u16 broadcom_len = 0;
1619 #ifdef CONFIG_IEEE80211_DEBUG
1620 char rates_str[64];
1621 char *p;
1622 #endif
1623
1624 while (length >= sizeof(*info_element)) {
1625 if (sizeof(*info_element) + info_element->len > length) {
1626 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1627 "info_element->len + 2 > left : "
1628 "info_element->len+2=%zd left=%d, id=%d.\n",
1629 info_element->len +
1630 sizeof(*info_element),
1631 length, info_element->id);
1632 /* We stop processing but don't return an error here
1633 * because some misbehaviour APs break this rule. ie.
1634 * Orinoco AP1000. */
1635 break;
1636 }
1637
1638 switch (info_element->id) {
1639 case MFIE_TYPE_SSID:
1640 if (ieee80211_is_empty_essid(info_element->data,
1641 info_element->len)) {
1642 network->flags |= NETWORK_EMPTY_ESSID;
1643 break;
1644 }
1645
1646 network->ssid_len = min(info_element->len,
1647 (u8) IW_ESSID_MAX_SIZE);
1648 memcpy(network->ssid, info_element->data, network->ssid_len);
1649 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1650 memset(network->ssid + network->ssid_len, 0,
1651 IW_ESSID_MAX_SIZE - network->ssid_len);
1652
1653 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1654 network->ssid, network->ssid_len);
1655 break;
1656
1657 case MFIE_TYPE_RATES:
1658 #ifdef CONFIG_IEEE80211_DEBUG
1659 p = rates_str;
1660 #endif
1661 network->rates_len = min(info_element->len,
1662 MAX_RATES_LENGTH);
1663 for (i = 0; i < network->rates_len; i++) {
1664 network->rates[i] = info_element->data[i];
1665 #ifdef CONFIG_IEEE80211_DEBUG
1666 p += snprintf(p, sizeof(rates_str) -
1667 (p - rates_str), "%02X ",
1668 network->rates[i]);
1669 #endif
1670 if (ieee80211_is_ofdm_rate
1671 (info_element->data[i])) {
1672 network->flags |= NETWORK_HAS_OFDM;
1673 if (info_element->data[i] &
1674 IEEE80211_BASIC_RATE_MASK)
1675 network->flags &=
1676 ~NETWORK_HAS_CCK;
1677 }
1678 }
1679
1680 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1681 rates_str, network->rates_len);
1682 break;
1683
1684 case MFIE_TYPE_RATES_EX:
1685 #ifdef CONFIG_IEEE80211_DEBUG
1686 p = rates_str;
1687 #endif
1688 network->rates_ex_len = min(info_element->len,
1689 MAX_RATES_EX_LENGTH);
1690 for (i = 0; i < network->rates_ex_len; i++) {
1691 network->rates_ex[i] = info_element->data[i];
1692 #ifdef CONFIG_IEEE80211_DEBUG
1693 p += snprintf(p, sizeof(rates_str) -
1694 (p - rates_str), "%02X ",
1695 network->rates_ex[i]);
1696 #endif
1697 if (ieee80211_is_ofdm_rate
1698 (info_element->data[i])) {
1699 network->flags |= NETWORK_HAS_OFDM;
1700 if (info_element->data[i] &
1701 IEEE80211_BASIC_RATE_MASK)
1702 network->flags &=
1703 ~NETWORK_HAS_CCK;
1704 }
1705 }
1706
1707 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1708 rates_str, network->rates_ex_len);
1709 break;
1710
1711 case MFIE_TYPE_DS_SET:
1712 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1713 info_element->data[0]);
1714 network->channel = info_element->data[0];
1715 break;
1716
1717 case MFIE_TYPE_FH_SET:
1718 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1719 break;
1720
1721 case MFIE_TYPE_CF_SET:
1722 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1723 break;
1724
1725 case MFIE_TYPE_TIM:
1726 if(info_element->len < 4)
1727 break;
1728
1729 network->tim.tim_count = info_element->data[0];
1730 network->tim.tim_period = info_element->data[1];
1731
1732 network->dtim_period = info_element->data[1];
1733 if(ieee->state != IEEE80211_LINKED)
1734 break;
1735
1736 network->last_dtim_sta_time[0] = stats->mac_time[0];
1737 network->last_dtim_sta_time[1] = stats->mac_time[1];
1738
1739 network->dtim_data = IEEE80211_DTIM_VALID;
1740
1741 if(info_element->data[0] != 0)
1742 break;
1743
1744 if(info_element->data[2] & 1)
1745 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1746
1747 offset = (info_element->data[2] >> 1)*2;
1748
1749 if(ieee->assoc_id < 8*offset ||
1750 ieee->assoc_id > 8*(offset + info_element->len -3))
1751
1752 break;
1753
1754 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1755
1756 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1757 network->dtim_data |= IEEE80211_DTIM_UCAST;
1758
1759 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1760 break;
1761
1762 case MFIE_TYPE_ERP:
1763 network->erp_value = info_element->data[0];
1764 network->flags |= NETWORK_HAS_ERP_VALUE;
1765 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1766 network->erp_value);
1767 break;
1768 case MFIE_TYPE_IBSS_SET:
1769 network->atim_window = info_element->data[0];
1770 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1771 network->atim_window);
1772 break;
1773
1774 case MFIE_TYPE_CHALLENGE:
1775 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1776 break;
1777
1778 case MFIE_TYPE_GENERIC:
1779 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1780 info_element->len);
1781 if (!ieee80211_parse_qos_info_param_IE(info_element,
1782 network))
1783 break;
1784
1785 if (info_element->len >= 4 &&
1786 info_element->data[0] == 0x00 &&
1787 info_element->data[1] == 0x50 &&
1788 info_element->data[2] == 0xf2 &&
1789 info_element->data[3] == 0x01) {
1790 network->wpa_ie_len = min(info_element->len + 2,
1791 MAX_WPA_IE_LEN);
1792 memcpy(network->wpa_ie, info_element,
1793 network->wpa_ie_len);
1794 break;
1795 }
1796
1797 #ifdef THOMAS_TURBO
1798 if (info_element->len == 7 &&
1799 info_element->data[0] == 0x00 &&
1800 info_element->data[1] == 0xe0 &&
1801 info_element->data[2] == 0x4c &&
1802 info_element->data[3] == 0x01 &&
1803 info_element->data[4] == 0x02) {
1804 network->Turbo_Enable = 1;
1805 }
1806 #endif
1807
1808 //for HTcap and HTinfo parameters
1809 if(tmp_htcap_len == 0){
1810 if(info_element->len >= 4 &&
1811 info_element->data[0] == 0x00 &&
1812 info_element->data[1] == 0x90 &&
1813 info_element->data[2] == 0x4c &&
1814 info_element->data[3] == 0x033){
1815
1816 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1817 if(tmp_htcap_len != 0){
1818 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1819 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1820 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1821 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1822 }
1823 }
1824 if(tmp_htcap_len != 0)
1825 network->bssht.bdSupportHT = true;
1826 else
1827 network->bssht.bdSupportHT = false;
1828 }
1829
1830
1831 if(tmp_htinfo_len == 0){
1832 if(info_element->len >= 4 &&
1833 info_element->data[0] == 0x00 &&
1834 info_element->data[1] == 0x90 &&
1835 info_element->data[2] == 0x4c &&
1836 info_element->data[3] == 0x034){
1837
1838 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1839 if(tmp_htinfo_len != 0){
1840 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1841 if(tmp_htinfo_len){
1842 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1843 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1844 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1845 }
1846
1847 }
1848
1849 }
1850 }
1851
1852 if(ieee->aggregation){
1853 if(network->bssht.bdSupportHT){
1854 if(info_element->len >= 4 &&
1855 info_element->data[0] == 0x00 &&
1856 info_element->data[1] == 0xe0 &&
1857 info_element->data[2] == 0x4c &&
1858 info_element->data[3] == 0x02){
1859
1860 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1861 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1862
1863 }
1864 if(ht_realtek_agg_len >= 5){
1865 network->bssht.bdRT2RTAggregation = true;
1866
1867 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1868 network->bssht.bdRT2RTLongSlotTime = true;
1869 }
1870 }
1871
1872 }
1873
1874 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1875 {
1876 if ((info_element->len >= 3 &&
1877 info_element->data[0] == 0x00 &&
1878 info_element->data[1] == 0x05 &&
1879 info_element->data[2] == 0xb5) ||
1880 (info_element->len >= 3 &&
1881 info_element->data[0] == 0x00 &&
1882 info_element->data[1] == 0x0a &&
1883 info_element->data[2] == 0xf7) ||
1884 (info_element->len >= 3 &&
1885 info_element->data[0] == 0x00 &&
1886 info_element->data[1] == 0x10 &&
1887 info_element->data[2] == 0x18)){
1888
1889 network->broadcom_cap_exist = true;
1890
1891 }
1892 }
1893 if(info_element->len >= 3 &&
1894 info_element->data[0] == 0x00 &&
1895 info_element->data[1] == 0x0c &&
1896 info_element->data[2] == 0x43)
1897 {
1898 network->ralink_cap_exist = true;
1899 }
1900 else
1901 network->ralink_cap_exist = false;
1902 //added by amy for atheros AP
1903 if((info_element->len >= 3 &&
1904 info_element->data[0] == 0x00 &&
1905 info_element->data[1] == 0x03 &&
1906 info_element->data[2] == 0x7f) ||
1907 (info_element->len >= 3 &&
1908 info_element->data[0] == 0x00 &&
1909 info_element->data[1] == 0x13 &&
1910 info_element->data[2] == 0x74))
1911 {
1912 printk("========>%s(): athros AP is exist\n",__func__);
1913 network->atheros_cap_exist = true;
1914 }
1915 else
1916 network->atheros_cap_exist = false;
1917
1918 if(info_element->len >= 3 &&
1919 info_element->data[0] == 0x00 &&
1920 info_element->data[1] == 0x40 &&
1921 info_element->data[2] == 0x96)
1922 {
1923 network->cisco_cap_exist = true;
1924 }
1925 else
1926 network->cisco_cap_exist = false;
1927 //added by amy for LEAP of cisco
1928 if (info_element->len > 4 &&
1929 info_element->data[0] == 0x00 &&
1930 info_element->data[1] == 0x40 &&
1931 info_element->data[2] == 0x96 &&
1932 info_element->data[3] == 0x01)
1933 {
1934 if(info_element->len == 6)
1935 {
1936 memcpy(network->CcxRmState, &info_element[4], 2);
1937 if(network->CcxRmState[0] != 0)
1938 {
1939 network->bCcxRmEnable = true;
1940 }
1941 else
1942 network->bCcxRmEnable = false;
1943 //
1944 // CCXv4 Table 59-1 MBSSID Masks.
1945 //
1946 network->MBssidMask = network->CcxRmState[1] & 0x07;
1947 if(network->MBssidMask != 0)
1948 {
1949 network->bMBssidValid = true;
1950 network->MBssidMask = 0xff << (network->MBssidMask);
1951 cpMacAddr(network->MBssid, network->bssid);
1952 network->MBssid[5] &= network->MBssidMask;
1953 }
1954 else
1955 {
1956 network->bMBssidValid = false;
1957 }
1958 }
1959 else
1960 {
1961 network->bCcxRmEnable = false;
1962 }
1963 }
1964 if (info_element->len > 4 &&
1965 info_element->data[0] == 0x00 &&
1966 info_element->data[1] == 0x40 &&
1967 info_element->data[2] == 0x96 &&
1968 info_element->data[3] == 0x03)
1969 {
1970 if(info_element->len == 5)
1971 {
1972 network->bWithCcxVerNum = true;
1973 network->BssCcxVerNumber = info_element->data[4];
1974 }
1975 else
1976 {
1977 network->bWithCcxVerNum = false;
1978 network->BssCcxVerNumber = 0;
1979 }
1980 }
1981 break;
1982
1983 case MFIE_TYPE_RSN:
1984 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1985 info_element->len);
1986 network->rsn_ie_len = min(info_element->len + 2,
1987 MAX_WPA_IE_LEN);
1988 memcpy(network->rsn_ie, info_element,
1989 network->rsn_ie_len);
1990 break;
1991
1992 //HT related element.
1993 case MFIE_TYPE_HT_CAP:
1994 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1995 info_element->len);
1996 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1997 if(tmp_htcap_len != 0){
1998 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1999 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2000 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2001 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2002
2003 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2004 // windows driver will update WMM parameters each beacon received once connected
2005 // Linux driver is a bit different.
2006 network->bssht.bdSupportHT = true;
2007 }
2008 else
2009 network->bssht.bdSupportHT = false;
2010 break;
2011
2012
2013 case MFIE_TYPE_HT_INFO:
2014 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2015 info_element->len);
2016 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2017 if(tmp_htinfo_len){
2018 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2019 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2020 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2021 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2022 }
2023 break;
2024
2025 case MFIE_TYPE_AIRONET:
2026 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2027 info_element->len);
2028 if(info_element->len >IE_CISCO_FLAG_POSITION)
2029 {
2030 network->bWithAironetIE = true;
2031
2032 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2033 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2034 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2035 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2036 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2037 {
2038 network->bCkipSupported = true;
2039 }
2040 else
2041 {
2042 network->bCkipSupported = false;
2043 }
2044 }
2045 else
2046 {
2047 network->bWithAironetIE = false;
2048 network->bCkipSupported = false;
2049 }
2050 break;
2051 case MFIE_TYPE_QOS_PARAMETER:
2052 printk(KERN_ERR
2053 "QoS Error need to parse QOS_PARAMETER IE\n");
2054 break;
2055
2056 case MFIE_TYPE_COUNTRY:
2057 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2058 info_element->len);
2059 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2060 break;
2061 /* TODO */
2062 default:
2063 IEEE80211_DEBUG_MGMT
2064 ("Unsupported info element: %s (%d)\n",
2065 get_info_element_string(info_element->id),
2066 info_element->id);
2067 break;
2068 }
2069
2070 length -= sizeof(*info_element) + info_element->len;
2071 info_element =
2072 (struct ieee80211_info_element *)&info_element->
2073 data[info_element->len];
2074 }
2075
2076 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2077 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2078 {
2079 network->unknown_cap_exist = true;
2080 }
2081 else
2082 {
2083 network->unknown_cap_exist = false;
2084 }
2085 return 0;
2086 }
2087
2088 static inline u8 ieee80211_SignalStrengthTranslate(
2089 u8 CurrSS
2090 )
2091 {
2092 u8 RetSS;
2093
2094 // Step 1. Scale mapping.
2095 if(CurrSS >= 71 && CurrSS <= 100)
2096 {
2097 RetSS = 90 + ((CurrSS - 70) / 3);
2098 }
2099 else if(CurrSS >= 41 && CurrSS <= 70)
2100 {
2101 RetSS = 78 + ((CurrSS - 40) / 3);
2102 }
2103 else if(CurrSS >= 31 && CurrSS <= 40)
2104 {
2105 RetSS = 66 + (CurrSS - 30);
2106 }
2107 else if(CurrSS >= 21 && CurrSS <= 30)
2108 {
2109 RetSS = 54 + (CurrSS - 20);
2110 }
2111 else if(CurrSS >= 5 && CurrSS <= 20)
2112 {
2113 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2114 }
2115 else if(CurrSS == 4)
2116 {
2117 RetSS = 36;
2118 }
2119 else if(CurrSS == 3)
2120 {
2121 RetSS = 27;
2122 }
2123 else if(CurrSS == 2)
2124 {
2125 RetSS = 18;
2126 }
2127 else if(CurrSS == 1)
2128 {
2129 RetSS = 9;
2130 }
2131 else
2132 {
2133 RetSS = CurrSS;
2134 }
2135 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2136
2137 // Step 2. Smoothing.
2138
2139 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2140
2141 return RetSS;
2142 }
2143
2144 /* 0-100 index */
2145 static long ieee80211_translate_todbm(u8 signal_strength_index)
2146 {
2147 long signal_power; // in dBm.
2148
2149 // Translate to dBm (x=0.5y-95).
2150 signal_power = (long)((signal_strength_index + 1) >> 1);
2151 signal_power -= 95;
2152
2153 return signal_power;
2154 }
2155
2156 static inline int ieee80211_network_init(
2157 struct ieee80211_device *ieee,
2158 struct ieee80211_probe_response *beacon,
2159 struct ieee80211_network *network,
2160 struct ieee80211_rx_stats *stats)
2161 {
2162 #ifdef CONFIG_IEEE80211_DEBUG
2163 //char rates_str[64];
2164 //char *p;
2165 #endif
2166
2167 network->qos_data.active = 0;
2168 network->qos_data.supported = 0;
2169 network->qos_data.param_count = 0;
2170 network->qos_data.old_param_count = 0;
2171
2172 /* Pull out fixed field data */
2173 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2174 network->capability = le16_to_cpu(beacon->capability);
2175 network->last_scanned = jiffies;
2176 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2177 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2178 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
2179 /* Where to pull this? beacon->listen_interval;*/
2180 network->listen_interval = 0x0A;
2181 network->rates_len = network->rates_ex_len = 0;
2182 network->last_associate = 0;
2183 network->ssid_len = 0;
2184 network->flags = 0;
2185 network->atim_window = 0;
2186 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2187 0x3 : 0x0;
2188 network->berp_info_valid = false;
2189 network->broadcom_cap_exist = false;
2190 network->ralink_cap_exist = false;
2191 network->atheros_cap_exist = false;
2192 network->cisco_cap_exist = false;
2193 network->unknown_cap_exist = false;
2194 #ifdef THOMAS_TURBO
2195 network->Turbo_Enable = 0;
2196 #endif
2197 network->CountryIeLen = 0;
2198 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2199 //Initialize HT parameters
2200 //ieee80211_ht_initialize(&network->bssht);
2201 HTInitializeBssDesc(&network->bssht);
2202 if (stats->freq == IEEE80211_52GHZ_BAND) {
2203 /* for A band (No DS info) */
2204 network->channel = stats->received_channel;
2205 } else
2206 network->flags |= NETWORK_HAS_CCK;
2207
2208 network->wpa_ie_len = 0;
2209 network->rsn_ie_len = 0;
2210
2211 if (ieee80211_parse_info_param
2212 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2213 return 1;
2214
2215 network->mode = 0;
2216 if (stats->freq == IEEE80211_52GHZ_BAND)
2217 network->mode = IEEE_A;
2218 else {
2219 if (network->flags & NETWORK_HAS_OFDM)
2220 network->mode |= IEEE_G;
2221 if (network->flags & NETWORK_HAS_CCK)
2222 network->mode |= IEEE_B;
2223 }
2224
2225 if (network->mode == 0) {
2226 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2227 "network.\n",
2228 escape_essid(network->ssid,
2229 network->ssid_len),
2230 network->bssid);
2231 return 1;
2232 }
2233
2234 if(network->bssht.bdSupportHT){
2235 if(network->mode == IEEE_A)
2236 network->mode = IEEE_N_5G;
2237 else if(network->mode & (IEEE_G | IEEE_B))
2238 network->mode = IEEE_N_24G;
2239 }
2240 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2241 network->flags |= NETWORK_EMPTY_ESSID;
2242
2243 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2244 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2245 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2246
2247 memcpy(&network->stats, stats, sizeof(network->stats));
2248
2249 return 0;
2250 }
2251
2252 static inline int is_same_network(struct ieee80211_network *src,
2253 struct ieee80211_network *dst, struct ieee80211_device *ieee)
2254 {
2255 /* A network is only a duplicate if the channel, BSSID, ESSID
2256 * and the capability field (in particular IBSS and BSS) all match.
2257 * We treat all <hidden> with the same BSSID and channel
2258 * as one network */
2259 return //((src->ssid_len == dst->ssid_len) &&
2260 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2261 (src->channel == dst->channel) &&
2262 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2263 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2264 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2265 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2266 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2267 ((src->capability & WLAN_CAPABILITY_BSS) ==
2268 (dst->capability & WLAN_CAPABILITY_BSS)));
2269 }
2270
2271 static inline void update_network(struct ieee80211_network *dst,
2272 struct ieee80211_network *src)
2273 {
2274 int qos_active;
2275 u8 old_param;
2276
2277 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2278 dst->capability = src->capability;
2279 memcpy(dst->rates, src->rates, src->rates_len);
2280 dst->rates_len = src->rates_len;
2281 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2282 dst->rates_ex_len = src->rates_ex_len;
2283 if (src->ssid_len > 0)
2284 {
2285 memset(dst->ssid, 0, dst->ssid_len);
2286 dst->ssid_len = src->ssid_len;
2287 memcpy(dst->ssid, src->ssid, src->ssid_len);
2288 }
2289 dst->mode = src->mode;
2290 dst->flags = src->flags;
2291 dst->time_stamp[0] = src->time_stamp[0];
2292 dst->time_stamp[1] = src->time_stamp[1];
2293 if (src->flags & NETWORK_HAS_ERP_VALUE)
2294 {
2295 dst->erp_value = src->erp_value;
2296 dst->berp_info_valid = src->berp_info_valid = true;
2297 }
2298 dst->beacon_interval = src->beacon_interval;
2299 dst->listen_interval = src->listen_interval;
2300 dst->atim_window = src->atim_window;
2301 dst->dtim_period = src->dtim_period;
2302 dst->dtim_data = src->dtim_data;
2303 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2304 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2305 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2306
2307 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2308 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2309 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2310 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2311 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2312 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2313 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2314 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2315 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2316 dst->ralink_cap_exist = src->ralink_cap_exist;
2317 dst->atheros_cap_exist = src->atheros_cap_exist;
2318 dst->cisco_cap_exist = src->cisco_cap_exist;
2319 dst->unknown_cap_exist = src->unknown_cap_exist;
2320 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2321 dst->wpa_ie_len = src->wpa_ie_len;
2322 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2323 dst->rsn_ie_len = src->rsn_ie_len;
2324
2325 dst->last_scanned = jiffies;
2326 /* qos related parameters */
2327 //qos_active = src->qos_data.active;
2328 qos_active = dst->qos_data.active;
2329 //old_param = dst->qos_data.old_param_count;
2330 old_param = dst->qos_data.param_count;
2331 if(dst->flags & NETWORK_HAS_QOS_MASK)
2332 memcpy(&dst->qos_data, &src->qos_data,
2333 sizeof(struct ieee80211_qos_data));
2334 else {
2335 dst->qos_data.supported = src->qos_data.supported;
2336 dst->qos_data.param_count = src->qos_data.param_count;
2337 }
2338
2339 if (dst->qos_data.supported == 1) {
2340 dst->QoS_Enable = 1;
2341 if(dst->ssid_len)
2342 IEEE80211_DEBUG_QOS
2343 ("QoS the network %s is QoS supported\n",
2344 dst->ssid);
2345 else
2346 IEEE80211_DEBUG_QOS
2347 ("QoS the network is QoS supported\n");
2348 }
2349 dst->qos_data.active = qos_active;
2350 dst->qos_data.old_param_count = old_param;
2351
2352 /* dst->last_associate is not overwritten */
2353 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2354 if (src->wmm_param[0].aci_aifsn|| \
2355 src->wmm_param[1].aci_aifsn|| \
2356 src->wmm_param[2].aci_aifsn|| \
2357 src->wmm_param[3].aci_aifsn) {
2358 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2359 }
2360 //dst->QoS_Enable = src->QoS_Enable;
2361 #ifdef THOMAS_TURBO
2362 dst->Turbo_Enable = src->Turbo_Enable;
2363 #endif
2364
2365 dst->CountryIeLen = src->CountryIeLen;
2366 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2367
2368 //added by amy for LEAP
2369 dst->bWithAironetIE = src->bWithAironetIE;
2370 dst->bCkipSupported = src->bCkipSupported;
2371 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2372 dst->bCcxRmEnable = src->bCcxRmEnable;
2373 dst->MBssidMask = src->MBssidMask;
2374 dst->bMBssidValid = src->bMBssidValid;
2375 memcpy(dst->MBssid, src->MBssid, 6);
2376 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2377 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2378
2379 }
2380
2381 static inline int is_beacon(__le16 fc)
2382 {
2383 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2384 }
2385
2386 static inline void ieee80211_process_probe_response(
2387 struct ieee80211_device *ieee,
2388 struct ieee80211_probe_response *beacon,
2389 struct ieee80211_rx_stats *stats)
2390 {
2391 struct ieee80211_network network;
2392 struct ieee80211_network *target;
2393 struct ieee80211_network *oldest = NULL;
2394 #ifdef CONFIG_IEEE80211_DEBUG
2395 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2396 #endif
2397 unsigned long flags;
2398 short renew;
2399 //u8 wmm_info;
2400
2401 memset(&network, 0, sizeof(struct ieee80211_network));
2402 IEEE80211_DEBUG_SCAN(
2403 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2404 escape_essid(info_element->data, info_element->len),
2405 beacon->header.addr3,
2406 (beacon->capability & (1<<0xf)) ? '1' : '0',
2407 (beacon->capability & (1<<0xe)) ? '1' : '0',
2408 (beacon->capability & (1<<0xd)) ? '1' : '0',
2409 (beacon->capability & (1<<0xc)) ? '1' : '0',
2410 (beacon->capability & (1<<0xb)) ? '1' : '0',
2411 (beacon->capability & (1<<0xa)) ? '1' : '0',
2412 (beacon->capability & (1<<0x9)) ? '1' : '0',
2413 (beacon->capability & (1<<0x8)) ? '1' : '0',
2414 (beacon->capability & (1<<0x7)) ? '1' : '0',
2415 (beacon->capability & (1<<0x6)) ? '1' : '0',
2416 (beacon->capability & (1<<0x5)) ? '1' : '0',
2417 (beacon->capability & (1<<0x4)) ? '1' : '0',
2418 (beacon->capability & (1<<0x3)) ? '1' : '0',
2419 (beacon->capability & (1<<0x2)) ? '1' : '0',
2420 (beacon->capability & (1<<0x1)) ? '1' : '0',
2421 (beacon->capability & (1<<0x0)) ? '1' : '0');
2422
2423 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2424 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2425 escape_essid(info_element->data,
2426 info_element->len),
2427 beacon->header.addr3,
2428 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2429 IEEE80211_STYPE_PROBE_RESP ?
2430 "PROBE RESPONSE" : "BEACON");
2431 return;
2432 }
2433
2434 // For Asus EeePc request,
2435 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2436 // wireless adapter should follow the country code.
2437 // (2) If there is no any country code in beacon,
2438 // then wireless adapter should do active scan from ch1~11 and
2439 // passive scan from ch12~14
2440
2441 if (!IsLegalChannel(ieee, network.channel))
2442 return;
2443 if (ieee->bGlobalDomain)
2444 {
2445 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2446 {
2447 // Case 1: Country code
2448 if(IS_COUNTRY_IE_VALID(ieee) )
2449 {
2450 if (!IsLegalChannel(ieee, network.channel)) {
2451 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2452 return;
2453 }
2454 }
2455 // Case 2: No any country code.
2456 else
2457 {
2458 // Filter over channel ch12~14
2459 if (network.channel > 11)
2460 {
2461 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2462 return;
2463 }
2464 }
2465 }
2466 else
2467 {
2468 // Case 1: Country code
2469 if(IS_COUNTRY_IE_VALID(ieee) )
2470 {
2471 if (!IsLegalChannel(ieee, network.channel)) {
2472 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2473 return;
2474 }
2475 }
2476 // Case 2: No any country code.
2477 else
2478 {
2479 // Filter over channel ch12~14
2480 if (network.channel > 14)
2481 {
2482 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2483 return;
2484 }
2485 }
2486 }
2487 }
2488
2489 /* The network parsed correctly -- so now we scan our known networks
2490 * to see if we can find it in our list.
2491 *
2492 * NOTE: This search is definitely not optimized. Once its doing
2493 * the "right thing" we'll optimize it for efficiency if
2494 * necessary */
2495
2496 /* Search for this entry in the list and update it if it is
2497 * already there. */
2498
2499 spin_lock_irqsave(&ieee->lock, flags);
2500
2501 if (is_same_network(&ieee->current_network, &network, ieee)) {
2502 update_network(&ieee->current_network, &network);
2503 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2504 && ieee->current_network.berp_info_valid){
2505 if(ieee->current_network.erp_value& ERP_UseProtection)
2506 ieee->current_network.buseprotection = true;
2507 else
2508 ieee->current_network.buseprotection = false;
2509 }
2510 if(is_beacon(beacon->header.frame_ctl))
2511 {
2512 if(ieee->state == IEEE80211_LINKED)
2513 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2514 }
2515 else //hidden AP
2516 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2517 }
2518
2519 list_for_each_entry(target, &ieee->network_list, list) {
2520 if (is_same_network(target, &network, ieee))
2521 break;
2522 if ((oldest == NULL) ||
2523 (target->last_scanned < oldest->last_scanned))
2524 oldest = target;
2525 }
2526
2527 /* If we didn't find a match, then get a new network slot to initialize
2528 * with this beacon's information */
2529 if (&target->list == &ieee->network_list) {
2530 if (list_empty(&ieee->network_free_list)) {
2531 /* If there are no more slots, expire the oldest */
2532 list_del(&oldest->list);
2533 target = oldest;
2534 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2535 "network list.\n",
2536 escape_essid(target->ssid,
2537 target->ssid_len),
2538 target->bssid);
2539 } else {
2540 /* Otherwise just pull from the free list */
2541 target = list_entry(ieee->network_free_list.next,
2542 struct ieee80211_network, list);
2543 list_del(ieee->network_free_list.next);
2544 }
2545
2546
2547 #ifdef CONFIG_IEEE80211_DEBUG
2548 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2549 escape_essid(network.ssid,
2550 network.ssid_len),
2551 network.bssid,
2552 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2553 IEEE80211_STYPE_PROBE_RESP ?
2554 "PROBE RESPONSE" : "BEACON");
2555 #endif
2556 memcpy(target, &network, sizeof(*target));
2557 list_add_tail(&target->list, &ieee->network_list);
2558 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2559 ieee80211_softmac_new_net(ieee,&network);
2560 } else {
2561 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2562 escape_essid(target->ssid,
2563 target->ssid_len),
2564 target->bssid,
2565 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2566 IEEE80211_STYPE_PROBE_RESP ?
2567 "PROBE RESPONSE" : "BEACON");
2568
2569 /* we have an entry and we are going to update it. But this entry may
2570 * be already expired. In this case we do the same as we found a new
2571 * net and call the new_net handler
2572 */
2573 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2574 //YJ,add,080819,for hidden ap
2575 if(is_beacon(beacon->header.frame_ctl) == 0)
2576 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2577 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2578 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2579 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2580 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2581 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2582 renew = 1;
2583 //YJ,add,080819,for hidden ap,end
2584
2585 update_network(target, &network);
2586 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2587 ieee80211_softmac_new_net(ieee,&network);
2588 }
2589
2590 spin_unlock_irqrestore(&ieee->lock, flags);
2591 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2592 (ieee->state == IEEE80211_LINKED)) {
2593 if (ieee->handle_beacon != NULL) {
2594 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2595 }
2596 }
2597 }
2598
2599 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2600 struct rtl_80211_hdr_4addr *header,
2601 struct ieee80211_rx_stats *stats)
2602 {
2603 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2604
2605 case IEEE80211_STYPE_BEACON:
2606 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2607 WLAN_FC_GET_STYPE(header->frame_ctl));
2608 IEEE80211_DEBUG_SCAN("Beacon\n");
2609 ieee80211_process_probe_response(
2610 ieee, (struct ieee80211_probe_response *)header, stats);
2611 break;
2612
2613 case IEEE80211_STYPE_PROBE_RESP:
2614 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2615 WLAN_FC_GET_STYPE(header->frame_ctl));
2616 IEEE80211_DEBUG_SCAN("Probe response\n");
2617 ieee80211_process_probe_response(
2618 ieee, (struct ieee80211_probe_response *)header, stats);
2619 break;
2620
2621 }
2622 }
2623 EXPORT_SYMBOL(ieee80211_rx_mgt);
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