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[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 /* Leave Ethernet header part of hdr and full payload */
563 put_unaligned_be16(sub_skb->len, skb_push(sub_skb, 2));
564 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
565 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
566 }
567 //stats->rx_packets++;
568 //stats->rx_bytes += sub_skb->len;
569
570 /* Indicat the packets to upper layer */
571 if (sub_skb) {
572 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
573 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
574 sub_skb->dev = ieee->dev;
575 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
576 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
577 ieee->last_rx_ps_time = jiffies;
578 netif_rx(sub_skb);
579 }
580 }
581 kfree(prxb);
582 prxb = NULL;
583 }
584 }
585
586
587 static void RxReorderIndicatePacket(struct ieee80211_device *ieee,
588 struct ieee80211_rxb *prxb,
589 PRX_TS_RECORD pTS, u16 SeqNum)
590 {
591 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
592 PRX_REORDER_ENTRY pReorderEntry = NULL;
593 struct ieee80211_rxb **prxbIndicateArray;
594 u8 WinSize = pHTInfo->RxReorderWinSize;
595 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
596 u8 index = 0;
597 bool bMatchWinStart = false, bPktInBuf = false;
598 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize);
599
600 prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) *
601 REORDER_WIN_SIZE, GFP_KERNEL);
602 if (!prxbIndicateArray)
603 return;
604
605 /* Rx Reorder initialize condition.*/
606 if (pTS->RxIndicateSeq == 0xffff) {
607 pTS->RxIndicateSeq = SeqNum;
608 }
609
610 /* Drop out the packet which SeqNum is smaller than WinStart */
611 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
612 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
613 pTS->RxIndicateSeq, SeqNum);
614 pHTInfo->RxReorderDropCounter++;
615 {
616 int i;
617 for(i =0; i < prxb->nr_subframes; i++) {
618 dev_kfree_skb(prxb->subframes[i]);
619 }
620 kfree(prxb);
621 prxb = NULL;
622 }
623
624 kfree(prxbIndicateArray);
625 return;
626 }
627
628 /*
629 * Sliding window manipulation. Conditions includes:
630 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
631 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
632 */
633 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
634 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
635 bMatchWinStart = true;
636 } else if(SN_LESS(WinEnd, SeqNum)) {
637 if(SeqNum >= (WinSize - 1)) {
638 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
639 } else {
640 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
641 }
642 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
643 }
644
645 /*
646 * Indication process.
647 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
648 * with the SeqNum smaller than latest WinStart and buffer other packets.
649 */
650 /* For Rx Reorder condition:
651 * 1. All packets with SeqNum smaller than WinStart => Indicate
652 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
653 */
654 if(bMatchWinStart) {
655 /* Current packet is going to be indicated.*/
656 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
657 pTS->RxIndicateSeq, SeqNum);
658 prxbIndicateArray[0] = prxb;
659 // printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum);
660 index = 1;
661 } else {
662 /* Current packet is going to be inserted into pending list.*/
663 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__);
664 if(!list_empty(&ieee->RxReorder_Unused_List)) {
665 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
666 list_del_init(&pReorderEntry->List);
667
668 /* Make a reorder entry and insert into a the packet list.*/
669 pReorderEntry->SeqNum = SeqNum;
670 pReorderEntry->prxb = prxb;
671 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
672
673 if(!AddReorderEntry(pTS, pReorderEntry)) {
674 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
675 __func__, pTS->RxIndicateSeq, SeqNum);
676 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
677 {
678 int i;
679 for(i =0; i < prxb->nr_subframes; i++) {
680 dev_kfree_skb(prxb->subframes[i]);
681 }
682 kfree(prxb);
683 prxb = NULL;
684 }
685 } else {
686 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
687 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
688 }
689 }
690 else {
691 /*
692 * Packets are dropped if there is not enough reorder entries.
693 * This part shall be modified!! We can just indicate all the
694 * packets in buffer and get reorder entries.
695 */
696 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
697 {
698 int i;
699 for(i =0; i < prxb->nr_subframes; i++) {
700 dev_kfree_skb(prxb->subframes[i]);
701 }
702 kfree(prxb);
703 prxb = NULL;
704 }
705 }
706 }
707
708 /* Check if there is any packet need indicate.*/
709 while(!list_empty(&pTS->RxPendingPktList)) {
710 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
711 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
712 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
713 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
714 {
715 /* This protect buffer from overflow. */
716 if (index >= REORDER_WIN_SIZE) {
717 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
718 bPktInBuf = true;
719 break;
720 }
721
722 list_del_init(&pReorderEntry->List);
723
724 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
725 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
726
727 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
728 prxbIndicateArray[index] = pReorderEntry->prxb;
729 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
730 index++;
731
732 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
733 } else {
734 bPktInBuf = true;
735 break;
736 }
737 }
738
739 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
740 if (index>0) {
741 // Cancel previous pending timer.
742 // del_timer_sync(&pTS->RxPktPendingTimer);
743 pTS->RxTimeoutIndicateSeq = 0xffff;
744
745 // Indicate packets
746 if(index>REORDER_WIN_SIZE){
747 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
748 kfree(prxbIndicateArray);
749 return;
750 }
751 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
752 }
753
754 if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
755 // Set new pending timer.
756 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
757 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
758 if(timer_pending(&pTS->RxPktPendingTimer))
759 del_timer_sync(&pTS->RxPktPendingTimer);
760 pTS->RxPktPendingTimer.expires = jiffies +
761 msecs_to_jiffies(pHTInfo->RxReorderPendingTime);
762 add_timer(&pTS->RxPktPendingTimer);
763 }
764
765 kfree(prxbIndicateArray);
766 }
767
768 static u8 parse_subframe(struct sk_buff *skb,
769 struct ieee80211_rx_stats *rx_stats,
770 struct ieee80211_rxb *rxb, u8 *src, u8 *dst)
771 {
772 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
773 u16 fc = le16_to_cpu(hdr->frame_ctl);
774
775 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr);
776 u16 ChkLength;
777 bool bIsAggregateFrame = false;
778 u16 nSubframe_Length;
779 u8 nPadding_Length = 0;
780 u16 SeqNum=0;
781
782 struct sk_buff *sub_skb;
783 u8 *data_ptr;
784 /* just for debug purpose */
785 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
786
787 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
788 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
789 bIsAggregateFrame = true;
790 }
791
792 if (IEEE80211_QOS_HAS_SEQ(fc)) {
793 LLCOffset += 2;
794 }
795
796 if (rx_stats->bContainHTC) {
797 LLCOffset += sHTCLng;
798 }
799 // Null packet, don't indicate it to upper layer
800 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
801
802 if (skb->len <= ChkLength)
803 return 0;
804
805 skb_pull(skb, LLCOffset);
806
807 if(!bIsAggregateFrame) {
808 rxb->nr_subframes = 1;
809 #ifdef JOHN_NOCPY
810 rxb->subframes[0] = skb;
811 #else
812 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
813 #endif
814
815 memcpy(rxb->src,src,ETH_ALEN);
816 memcpy(rxb->dst,dst,ETH_ALEN);
817 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
818 return 1;
819 } else {
820 rxb->nr_subframes = 0;
821 memcpy(rxb->src,src,ETH_ALEN);
822 memcpy(rxb->dst,dst,ETH_ALEN);
823 while(skb->len > ETHERNET_HEADER_SIZE) {
824 /* Offset 12 denote 2 mac address */
825 nSubframe_Length = *((u16 *)(skb->data + 12));
826 //==m==>change the length order
827 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
828
829 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
830 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
831 __func__, rxb->nr_subframes);
832 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
833 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
834 printk("The Packet SeqNum is %d\n",SeqNum);
835 return 0;
836 }
837
838 /* move the data point to data content */
839 skb_pull(skb, ETHERNET_HEADER_SIZE);
840
841 #ifdef JOHN_NOCPY
842 sub_skb = skb_clone(skb, GFP_ATOMIC);
843 sub_skb->len = nSubframe_Length;
844 sub_skb->tail = sub_skb->data + nSubframe_Length;
845 #else
846 /* Allocate new skb for releasing to upper layer */
847 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
848 if (!sub_skb)
849 return 0;
850 skb_reserve(sub_skb, 12);
851 data_ptr = skb_put_data(sub_skb, skb->data,
852 nSubframe_Length);
853 #endif
854 rxb->subframes[rxb->nr_subframes++] = sub_skb;
855 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
856 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
857 break;
858 }
859 skb_pull(skb, nSubframe_Length);
860
861 if (skb->len != 0) {
862 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
863 if (nPadding_Length == 4) {
864 nPadding_Length = 0;
865 }
866
867 if (skb->len < nPadding_Length) {
868 return 0;
869 }
870
871 skb_pull(skb, nPadding_Length);
872 }
873 }
874 #ifdef JOHN_NOCPY
875 dev_kfree_skb(skb);
876 #endif
877 //{just for debug added by david
878 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
879 //}
880 return rxb->nr_subframes;
881 }
882 }
883
884 /* All received frames are sent to this function. @skb contains the frame in
885 * IEEE 802.11 format, i.e., in the format it was sent over air.
886 * This function is called only as a tasklet (software IRQ). */
887 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
888 struct ieee80211_rx_stats *rx_stats)
889 {
890 struct net_device *dev = ieee->dev;
891 struct rtl_80211_hdr_4addr *hdr;
892 //struct rtl_80211_hdr_3addrqos *hdr;
893
894 size_t hdrlen;
895 u16 fc, type, stype, sc;
896 struct net_device_stats *stats;
897 unsigned int frag;
898 u8 *payload;
899 u16 ethertype;
900 //added by amy for reorder
901 u8 TID = 0;
902 u16 SeqNum = 0;
903 PRX_TS_RECORD pTS = NULL;
904 //bool bIsAggregateFrame = false;
905 //added by amy for reorder
906 #ifdef NOT_YET
907 struct net_device *wds = NULL;
908 struct net_device *wds = NULL;
909 int from_assoc_ap = 0;
910 void *sta = NULL;
911 #endif
912 // u16 qos_ctl = 0;
913 u8 dst[ETH_ALEN];
914 u8 src[ETH_ALEN];
915 u8 bssid[ETH_ALEN];
916 struct ieee80211_crypt_data *crypt = NULL;
917 int keyidx = 0;
918
919 int i;
920 struct ieee80211_rxb *rxb = NULL;
921 // cheat the hdr type
922 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
923 stats = &ieee->stats;
924
925 if (skb->len < 10) {
926 printk(KERN_INFO "%s: SKB length < 10\n",
927 dev->name);
928 goto rx_dropped;
929 }
930
931 fc = le16_to_cpu(hdr->frame_ctl);
932 type = WLAN_FC_GET_TYPE(fc);
933 stype = WLAN_FC_GET_STYPE(fc);
934 sc = le16_to_cpu(hdr->seq_ctl);
935
936 frag = WLAN_GET_SEQ_FRAG(sc);
937 hdrlen = ieee80211_get_hdrlen(fc);
938
939 if (HTCCheck(ieee, skb->data))
940 {
941 if(net_ratelimit())
942 printk("find HTCControl\n");
943 hdrlen += 4;
944 rx_stats->bContainHTC = true;
945 }
946
947 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
948 #ifdef NOT_YET
949 /* Put this code here so that we avoid duplicating it in all
950 * Rx paths. - Jean II */
951 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
952 /* If spy monitoring on */
953 if (iface->spy_data.spy_number > 0) {
954 struct iw_quality wstats;
955 wstats.level = rx_stats->rssi;
956 wstats.noise = rx_stats->noise;
957 wstats.updated = 6; /* No qual value */
958 /* Update spy records */
959 wireless_spy_update(dev, hdr->addr2, &wstats);
960 }
961 #endif /* IW_WIRELESS_SPY */
962 hostap_update_rx_stats(local->ap, hdr, rx_stats);
963 #endif
964
965 if (ieee->iw_mode == IW_MODE_MONITOR) {
966 ieee80211_monitor_rx(ieee, skb, rx_stats);
967 stats->rx_packets++;
968 stats->rx_bytes += skb->len;
969 return 1;
970 }
971
972 if (ieee->host_decrypt) {
973 int idx = 0;
974 if (skb->len >= hdrlen + 3)
975 idx = skb->data[hdrlen + 3] >> 6;
976 crypt = ieee->crypt[idx];
977 #ifdef NOT_YET
978 sta = NULL;
979
980 /* Use station specific key to override default keys if the
981 * receiver address is a unicast address ("individual RA"). If
982 * bcrx_sta_key parameter is set, station specific key is used
983 * even with broad/multicast targets (this is against IEEE
984 * 802.11, but makes it easier to use different keys with
985 * stations that do not support WEP key mapping). */
986
987 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
988 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
989 &sta);
990 #endif
991
992 /* allow NULL decrypt to indicate an station specific override
993 * for default encryption */
994 if (crypt && (crypt->ops == NULL ||
995 crypt->ops->decrypt_mpdu == NULL))
996 crypt = NULL;
997
998 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
999 /* This seems to be triggered by some (multicast?)
1000 * frames from other than current BSS, so just drop the
1001 * frames silently instead of filling system log with
1002 * these reports. */
1003 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1004 " (SA=%pM)\n",
1005 hdr->addr2);
1006 ieee->ieee_stats.rx_discards_undecryptable++;
1007 goto rx_dropped;
1008 }
1009 }
1010
1011 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1012 goto rx_dropped;
1013
1014 // if QoS enabled, should check the sequence for each of the AC
1015 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
1016 if (is_duplicate_packet(ieee, hdr))
1017 goto rx_dropped;
1018
1019 }
1020 else
1021 {
1022 PRX_TS_RECORD pRxTS = NULL;
1023 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid);
1024 if(GetTs(
1025 ieee,
1026 (PTS_COMMON_INFO *) &pRxTS,
1027 hdr->addr2,
1028 Frame_QoSTID((u8 *)(skb->data)),
1029 RX_DIR,
1030 true))
1031 {
1032
1033 // 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));
1034 if ((fc & (1<<11)) &&
1035 (frag == pRxTS->RxLastFragNum) &&
1036 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
1037 goto rx_dropped;
1038 }
1039 else
1040 {
1041 pRxTS->RxLastFragNum = frag;
1042 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1043 }
1044 }
1045 else
1046 {
1047 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
1048 goto rx_dropped;
1049 }
1050 }
1051 if (type == IEEE80211_FTYPE_MGMT) {
1052
1053
1054 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1055 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1056 goto rx_dropped;
1057 else
1058 goto rx_exit;
1059 }
1060
1061 /* Data frame - extract src/dst addresses */
1062 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1063 case IEEE80211_FCTL_FROMDS:
1064 memcpy(dst, hdr->addr1, ETH_ALEN);
1065 memcpy(src, hdr->addr3, ETH_ALEN);
1066 memcpy(bssid, hdr->addr2, ETH_ALEN);
1067 break;
1068 case IEEE80211_FCTL_TODS:
1069 memcpy(dst, hdr->addr3, ETH_ALEN);
1070 memcpy(src, hdr->addr2, ETH_ALEN);
1071 memcpy(bssid, hdr->addr1, ETH_ALEN);
1072 break;
1073 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1074 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1075 goto rx_dropped;
1076 memcpy(dst, hdr->addr3, ETH_ALEN);
1077 memcpy(src, hdr->addr4, ETH_ALEN);
1078 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1079 break;
1080 default:
1081 memcpy(dst, hdr->addr1, ETH_ALEN);
1082 memcpy(src, hdr->addr2, ETH_ALEN);
1083 memcpy(bssid, hdr->addr3, ETH_ALEN);
1084 break;
1085 }
1086
1087 #ifdef NOT_YET
1088 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1089 goto rx_dropped;
1090 if (wds) {
1091 skb->dev = dev = wds;
1092 stats = hostap_get_stats(dev);
1093 }
1094
1095 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1096 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1097 ieee->stadev &&
1098 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1099 /* Frame from BSSID of the AP for which we are a client */
1100 skb->dev = dev = ieee->stadev;
1101 stats = hostap_get_stats(dev);
1102 from_assoc_ap = 1;
1103 }
1104
1105 if ((ieee->iw_mode == IW_MODE_MASTER ||
1106 ieee->iw_mode == IW_MODE_REPEAT) &&
1107 !from_assoc_ap) {
1108 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1109 wds != NULL)) {
1110 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1111 case AP_RX_CONTINUE:
1112 break;
1113 case AP_RX_DROP:
1114 goto rx_dropped;
1115 case AP_RX_EXIT:
1116 goto rx_exit;
1117 }
1118 }
1119 #endif
1120 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1121 /* Nullfunc frames may have PS-bit set, so they must be passed to
1122 * hostap_handle_sta_rx() before being dropped here. */
1123 if (stype != IEEE80211_STYPE_DATA &&
1124 stype != IEEE80211_STYPE_DATA_CFACK &&
1125 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1126 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1127 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1128 ) {
1129 if (stype != IEEE80211_STYPE_NULLFUNC)
1130 IEEE80211_DEBUG_DROP(
1131 "RX: dropped data frame "
1132 "with no data (type=0x%02x, "
1133 "subtype=0x%02x, len=%d)\n",
1134 type, stype, skb->len);
1135 goto rx_dropped;
1136 }
1137 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1138 goto rx_dropped;
1139
1140 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1141
1142 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1143 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1144 {
1145 printk("decrypt frame error\n");
1146 goto rx_dropped;
1147 }
1148
1149
1150 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1151
1152 /* skb: hdr + (possibly fragmented) plaintext payload */
1153 // PR: FIXME: hostap has additional conditions in the "if" below:
1154 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1155 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1156 int flen;
1157 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1158 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1159
1160 if (!frag_skb) {
1161 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1162 "Rx cannot get skb from fragment "
1163 "cache (morefrag=%d seq=%u frag=%u)\n",
1164 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1165 WLAN_GET_SEQ_SEQ(sc), frag);
1166 goto rx_dropped;
1167 }
1168 flen = skb->len;
1169 if (frag != 0)
1170 flen -= hdrlen;
1171
1172 if (frag_skb->tail + flen > frag_skb->end) {
1173 printk(KERN_WARNING "%s: host decrypted and "
1174 "reassembled frame did not fit skb\n",
1175 dev->name);
1176 ieee80211_frag_cache_invalidate(ieee, hdr);
1177 goto rx_dropped;
1178 }
1179
1180 if (frag == 0) {
1181 /* copy first fragment (including full headers) into
1182 * beginning of the fragment cache skb */
1183 skb_put_data(frag_skb, skb->data, flen);
1184 } else {
1185 /* append frame payload to the end of the fragment
1186 * cache skb */
1187 skb_put_data(frag_skb, skb->data + hdrlen, flen);
1188 }
1189 dev_kfree_skb_any(skb);
1190 skb = NULL;
1191
1192 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1193 /* more fragments expected - leave the skb in fragment
1194 * cache for now; it will be delivered to upper layers
1195 * after all fragments have been received */
1196 goto rx_exit;
1197 }
1198
1199 /* this was the last fragment and the frame will be
1200 * delivered, so remove skb from fragment cache */
1201 skb = frag_skb;
1202 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1203 ieee80211_frag_cache_invalidate(ieee, hdr);
1204 }
1205
1206 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1207 * encrypted/authenticated */
1208 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1209 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1210 {
1211 printk("==>decrypt msdu error\n");
1212 goto rx_dropped;
1213 }
1214
1215 //added by amy for AP roaming
1216 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1217 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1218
1219 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1220 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1221 if (/*ieee->ieee802_1x &&*/
1222 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1223
1224 #ifdef CONFIG_IEEE80211_DEBUG
1225 /* pass unencrypted EAPOL frames even if encryption is
1226 * configured */
1227 struct eapol *eap = (struct eapol *)(skb->data +
1228 24);
1229 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1230 eap_get_type(eap->type));
1231 #endif
1232 } else {
1233 IEEE80211_DEBUG_DROP(
1234 "encryption configured, but RX "
1235 "frame not encrypted (SA=%pM)\n",
1236 hdr->addr2);
1237 goto rx_dropped;
1238 }
1239 }
1240
1241 #ifdef CONFIG_IEEE80211_DEBUG
1242 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1243 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1244 struct eapol *eap = (struct eapol *)(skb->data +
1245 24);
1246 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1247 eap_get_type(eap->type));
1248 }
1249 #endif
1250
1251 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1252 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1253 IEEE80211_DEBUG_DROP(
1254 "dropped unencrypted RX data "
1255 "frame from %pM"
1256 " (drop_unencrypted=1)\n",
1257 hdr->addr2);
1258 goto rx_dropped;
1259 }
1260 /*
1261 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1262 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1263 }
1264 */
1265 //added by amy for reorder
1266 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1267 && !is_multicast_ether_addr(hdr->addr1))
1268 {
1269 TID = Frame_QoSTID(skb->data);
1270 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1271 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true);
1272 if (TID !=0 && TID !=3)
1273 {
1274 ieee->bis_any_nonbepkts = true;
1275 }
1276 }
1277 //added by amy for reorder
1278 /* skb: hdr + (possible reassembled) full plaintext payload */
1279 payload = skb->data + hdrlen;
1280 //ethertype = (payload[6] << 8) | payload[7];
1281 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1282 if (!rxb)
1283 goto rx_dropped;
1284 /* to parse amsdu packets */
1285 /* qos data packets & reserved bit is 1 */
1286 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
1287 /* only to free rxb, and not submit the packets to upper layer */
1288 for(i =0; i < rxb->nr_subframes; i++) {
1289 dev_kfree_skb(rxb->subframes[i]);
1290 }
1291 kfree(rxb);
1292 rxb = NULL;
1293 goto rx_dropped;
1294 }
1295
1296 //added by amy for reorder
1297 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){
1298 //added by amy for reorder
1299 for(i = 0; i<rxb->nr_subframes; i++) {
1300 struct sk_buff *sub_skb = rxb->subframes[i];
1301
1302 if (sub_skb) {
1303 /* convert hdr + possible LLC headers into Ethernet header */
1304 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1305 if (sub_skb->len >= 8 &&
1306 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1307 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1308 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1309 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1310 * replace EtherType */
1311 skb_pull(sub_skb, SNAP_SIZE);
1312 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1313 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1314 } else {
1315 u16 len;
1316 /* Leave Ethernet header part of hdr and full payload */
1317 len = be16_to_cpu(htons(sub_skb->len));
1318 memcpy(skb_push(sub_skb, 2), &len, 2);
1319 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1320 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1321 }
1322
1323 stats->rx_packets++;
1324 stats->rx_bytes += sub_skb->len;
1325 if (is_multicast_ether_addr(dst)) {
1326 stats->multicast++;
1327 }
1328
1329 /* Indicat the packets to upper layer */
1330 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1331 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1332 sub_skb->dev = dev;
1333 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1334 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1335 ieee->last_rx_ps_time = jiffies;
1336 netif_rx(sub_skb);
1337 }
1338 }
1339 kfree(rxb);
1340 rxb = NULL;
1341
1342 }
1343 else
1344 {
1345 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
1346 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1347 }
1348 #ifndef JOHN_NOCPY
1349 dev_kfree_skb(skb);
1350 #endif
1351
1352 rx_exit:
1353 #ifdef NOT_YET
1354 if (sta)
1355 hostap_handle_sta_release(sta);
1356 #endif
1357 return 1;
1358
1359 rx_dropped:
1360 kfree(rxb);
1361 rxb = NULL;
1362 stats->rx_dropped++;
1363
1364 /* Returning 0 indicates to caller that we have not handled the SKB--
1365 * so it is still allocated and can be used again by underlying
1366 * hardware as a DMA target */
1367 return 0;
1368 }
1369 EXPORT_SYMBOL(ieee80211_rx);
1370
1371 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1372
1373 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1374
1375 /*
1376 * Make the structure we read from the beacon packet to have
1377 * the right values
1378 */
1379 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1380 *info_element, int sub_type)
1381 {
1382
1383 if (info_element->qui_subtype != sub_type)
1384 return -1;
1385 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1386 return -1;
1387 if (info_element->qui_type != QOS_OUI_TYPE)
1388 return -1;
1389 if (info_element->version != QOS_VERSION_1)
1390 return -1;
1391
1392 return 0;
1393 }
1394
1395
1396 /*
1397 * Parse a QoS parameter element
1398 */
1399 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1400 *element_param, struct ieee80211_info_element
1401 *info_element)
1402 {
1403 int ret = 0;
1404 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1405
1406 if ((info_element == NULL) || (element_param == NULL))
1407 return -1;
1408
1409 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1410 memcpy(element_param->info_element.qui, info_element->data,
1411 info_element->len);
1412 element_param->info_element.elementID = info_element->id;
1413 element_param->info_element.length = info_element->len;
1414 } else
1415 ret = -1;
1416 if (ret == 0)
1417 ret = ieee80211_verify_qos_info(&element_param->info_element,
1418 QOS_OUI_PARAM_SUB_TYPE);
1419 return ret;
1420 }
1421
1422 /*
1423 * Parse a QoS information element
1424 */
1425 static int ieee80211_read_qos_info_element(struct
1426 ieee80211_qos_information_element
1427 *element_info, struct ieee80211_info_element
1428 *info_element)
1429 {
1430 int ret = 0;
1431 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1432
1433 if (element_info == NULL)
1434 return -1;
1435 if (info_element == NULL)
1436 return -1;
1437
1438 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1439 memcpy(element_info->qui, info_element->data,
1440 info_element->len);
1441 element_info->elementID = info_element->id;
1442 element_info->length = info_element->len;
1443 } else
1444 ret = -1;
1445
1446 if (ret == 0)
1447 ret = ieee80211_verify_qos_info(element_info,
1448 QOS_OUI_INFO_SUB_TYPE);
1449 return ret;
1450 }
1451
1452
1453 /*
1454 * Write QoS parameters from the ac parameters.
1455 */
1456 static int ieee80211_qos_convert_ac_to_parameters(struct
1457 ieee80211_qos_parameter_info
1458 *param_elm, struct
1459 ieee80211_qos_parameters
1460 *qos_param)
1461 {
1462 int i;
1463 struct ieee80211_qos_ac_parameter *ac_params;
1464 u8 aci;
1465 //u8 cw_min;
1466 //u8 cw_max;
1467
1468 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1469 ac_params = &(param_elm->ac_params_record[i]);
1470
1471 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1472
1473 if(aci >= QOS_QUEUE_NUM)
1474 continue;
1475 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1476
1477 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1478 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1479
1480 qos_param->cw_min[aci] =
1481 cpu_to_le16(ac_params->ecw_min_max & 0x0F);
1482
1483 qos_param->cw_max[aci] =
1484 cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4);
1485
1486 qos_param->flag[aci] =
1487 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1488 qos_param->tx_op_limit[aci] = ac_params->tx_op_limit;
1489 }
1490 return 0;
1491 }
1492
1493 /*
1494 * we have a generic data element which it may contain QoS information or
1495 * parameters element. check the information element length to decide
1496 * which type to read
1497 */
1498 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1499 *info_element,
1500 struct ieee80211_network *network)
1501 {
1502 int rc = 0;
1503 struct ieee80211_qos_parameters *qos_param = NULL;
1504 struct ieee80211_qos_information_element qos_info_element;
1505
1506 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1507
1508 if (rc == 0) {
1509 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1510 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1511 } else {
1512 struct ieee80211_qos_parameter_info param_element;
1513
1514 rc = ieee80211_read_qos_param_element(&param_element,
1515 info_element);
1516 if (rc == 0) {
1517 qos_param = &(network->qos_data.parameters);
1518 ieee80211_qos_convert_ac_to_parameters(&param_element,
1519 qos_param);
1520 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1521 network->qos_data.param_count =
1522 param_element.info_element.ac_info & 0x0F;
1523 }
1524 }
1525
1526 if (rc == 0) {
1527 IEEE80211_DEBUG_QOS("QoS is supported\n");
1528 network->qos_data.supported = 1;
1529 }
1530 return rc;
1531 }
1532
1533 #ifdef CONFIG_IEEE80211_DEBUG
1534 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1535
1536 static const char *get_info_element_string(u16 id)
1537 {
1538 switch (id) {
1539 MFIE_STRING(SSID);
1540 MFIE_STRING(RATES);
1541 MFIE_STRING(FH_SET);
1542 MFIE_STRING(DS_SET);
1543 MFIE_STRING(CF_SET);
1544 MFIE_STRING(TIM);
1545 MFIE_STRING(IBSS_SET);
1546 MFIE_STRING(COUNTRY);
1547 MFIE_STRING(HOP_PARAMS);
1548 MFIE_STRING(HOP_TABLE);
1549 MFIE_STRING(REQUEST);
1550 MFIE_STRING(CHALLENGE);
1551 MFIE_STRING(POWER_CONSTRAINT);
1552 MFIE_STRING(POWER_CAPABILITY);
1553 MFIE_STRING(TPC_REQUEST);
1554 MFIE_STRING(TPC_REPORT);
1555 MFIE_STRING(SUPP_CHANNELS);
1556 MFIE_STRING(CSA);
1557 MFIE_STRING(MEASURE_REQUEST);
1558 MFIE_STRING(MEASURE_REPORT);
1559 MFIE_STRING(QUIET);
1560 MFIE_STRING(IBSS_DFS);
1561 // MFIE_STRING(ERP_INFO);
1562 MFIE_STRING(RSN);
1563 MFIE_STRING(RATES_EX);
1564 MFIE_STRING(GENERIC);
1565 MFIE_STRING(QOS_PARAMETER);
1566 default:
1567 return "UNKNOWN";
1568 }
1569 }
1570 #endif
1571
1572 static inline void ieee80211_extract_country_ie(
1573 struct ieee80211_device *ieee,
1574 struct ieee80211_info_element *info_element,
1575 struct ieee80211_network *network,
1576 u8 *addr2
1577 )
1578 {
1579 if (IS_DOT11D_ENABLE(ieee))
1580 {
1581 if (info_element->len!= 0)
1582 {
1583 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1584 network->CountryIeLen = info_element->len;
1585
1586 if (!IS_COUNTRY_IE_VALID(ieee))
1587 {
1588 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1589 }
1590 }
1591
1592 //
1593 // 070305, rcnjko: I update country IE watch dog here because
1594 // some AP (e.g. Cisco 1242) don't include country IE in their
1595 // probe response frame.
1596 //
1597 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
1598 {
1599 UPDATE_CIE_WATCHDOG(ieee);
1600 }
1601 }
1602
1603 }
1604
1605 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1606 struct ieee80211_info_element *info_element,
1607 u16 length,
1608 struct ieee80211_network *network,
1609 struct ieee80211_rx_stats *stats)
1610 {
1611 u8 i;
1612 short offset;
1613 u16 tmp_htcap_len=0;
1614 u16 tmp_htinfo_len=0;
1615 u16 ht_realtek_agg_len=0;
1616 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1617 // u16 broadcom_len = 0;
1618 #ifdef CONFIG_IEEE80211_DEBUG
1619 char rates_str[64];
1620 char *p;
1621 #endif
1622
1623 while (length >= sizeof(*info_element)) {
1624 if (sizeof(*info_element) + info_element->len > length) {
1625 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1626 "info_element->len + 2 > left : "
1627 "info_element->len+2=%zd left=%d, id=%d.\n",
1628 info_element->len +
1629 sizeof(*info_element),
1630 length, info_element->id);
1631 /* We stop processing but don't return an error here
1632 * because some misbehaviour APs break this rule. ie.
1633 * Orinoco AP1000. */
1634 break;
1635 }
1636
1637 switch (info_element->id) {
1638 case MFIE_TYPE_SSID:
1639 if (ieee80211_is_empty_essid(info_element->data,
1640 info_element->len)) {
1641 network->flags |= NETWORK_EMPTY_ESSID;
1642 break;
1643 }
1644
1645 network->ssid_len = min(info_element->len,
1646 (u8) IW_ESSID_MAX_SIZE);
1647 memcpy(network->ssid, info_element->data, network->ssid_len);
1648 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1649 memset(network->ssid + network->ssid_len, 0,
1650 IW_ESSID_MAX_SIZE - network->ssid_len);
1651
1652 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1653 network->ssid, network->ssid_len);
1654 break;
1655
1656 case MFIE_TYPE_RATES:
1657 #ifdef CONFIG_IEEE80211_DEBUG
1658 p = rates_str;
1659 #endif
1660 network->rates_len = min(info_element->len,
1661 MAX_RATES_LENGTH);
1662 for (i = 0; i < network->rates_len; i++) {
1663 network->rates[i] = info_element->data[i];
1664 #ifdef CONFIG_IEEE80211_DEBUG
1665 p += snprintf(p, sizeof(rates_str) -
1666 (p - rates_str), "%02X ",
1667 network->rates[i]);
1668 #endif
1669 if (ieee80211_is_ofdm_rate
1670 (info_element->data[i])) {
1671 network->flags |= NETWORK_HAS_OFDM;
1672 if (info_element->data[i] &
1673 IEEE80211_BASIC_RATE_MASK)
1674 network->flags &=
1675 ~NETWORK_HAS_CCK;
1676 }
1677 }
1678
1679 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1680 rates_str, network->rates_len);
1681 break;
1682
1683 case MFIE_TYPE_RATES_EX:
1684 #ifdef CONFIG_IEEE80211_DEBUG
1685 p = rates_str;
1686 #endif
1687 network->rates_ex_len = min(info_element->len,
1688 MAX_RATES_EX_LENGTH);
1689 for (i = 0; i < network->rates_ex_len; i++) {
1690 network->rates_ex[i] = info_element->data[i];
1691 #ifdef CONFIG_IEEE80211_DEBUG
1692 p += snprintf(p, sizeof(rates_str) -
1693 (p - rates_str), "%02X ",
1694 network->rates_ex[i]);
1695 #endif
1696 if (ieee80211_is_ofdm_rate
1697 (info_element->data[i])) {
1698 network->flags |= NETWORK_HAS_OFDM;
1699 if (info_element->data[i] &
1700 IEEE80211_BASIC_RATE_MASK)
1701 network->flags &=
1702 ~NETWORK_HAS_CCK;
1703 }
1704 }
1705
1706 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1707 rates_str, network->rates_ex_len);
1708 break;
1709
1710 case MFIE_TYPE_DS_SET:
1711 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1712 info_element->data[0]);
1713 network->channel = info_element->data[0];
1714 break;
1715
1716 case MFIE_TYPE_FH_SET:
1717 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1718 break;
1719
1720 case MFIE_TYPE_CF_SET:
1721 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1722 break;
1723
1724 case MFIE_TYPE_TIM:
1725 if(info_element->len < 4)
1726 break;
1727
1728 network->tim.tim_count = info_element->data[0];
1729 network->tim.tim_period = info_element->data[1];
1730
1731 network->dtim_period = info_element->data[1];
1732 if(ieee->state != IEEE80211_LINKED)
1733 break;
1734
1735 network->last_dtim_sta_time[0] = stats->mac_time[0];
1736 network->last_dtim_sta_time[1] = stats->mac_time[1];
1737
1738 network->dtim_data = IEEE80211_DTIM_VALID;
1739
1740 if(info_element->data[0] != 0)
1741 break;
1742
1743 if(info_element->data[2] & 1)
1744 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1745
1746 offset = (info_element->data[2] >> 1)*2;
1747
1748 if(ieee->assoc_id < 8*offset ||
1749 ieee->assoc_id > 8*(offset + info_element->len -3))
1750
1751 break;
1752
1753 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1754
1755 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1756 network->dtim_data |= IEEE80211_DTIM_UCAST;
1757
1758 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1759 break;
1760
1761 case MFIE_TYPE_ERP:
1762 network->erp_value = info_element->data[0];
1763 network->flags |= NETWORK_HAS_ERP_VALUE;
1764 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1765 network->erp_value);
1766 break;
1767 case MFIE_TYPE_IBSS_SET:
1768 network->atim_window = info_element->data[0];
1769 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1770 network->atim_window);
1771 break;
1772
1773 case MFIE_TYPE_CHALLENGE:
1774 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1775 break;
1776
1777 case MFIE_TYPE_GENERIC:
1778 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1779 info_element->len);
1780 if (!ieee80211_parse_qos_info_param_IE(info_element,
1781 network))
1782 break;
1783
1784 if (info_element->len >= 4 &&
1785 info_element->data[0] == 0x00 &&
1786 info_element->data[1] == 0x50 &&
1787 info_element->data[2] == 0xf2 &&
1788 info_element->data[3] == 0x01) {
1789 network->wpa_ie_len = min(info_element->len + 2,
1790 MAX_WPA_IE_LEN);
1791 memcpy(network->wpa_ie, info_element,
1792 network->wpa_ie_len);
1793 break;
1794 }
1795
1796 #ifdef THOMAS_TURBO
1797 if (info_element->len == 7 &&
1798 info_element->data[0] == 0x00 &&
1799 info_element->data[1] == 0xe0 &&
1800 info_element->data[2] == 0x4c &&
1801 info_element->data[3] == 0x01 &&
1802 info_element->data[4] == 0x02) {
1803 network->Turbo_Enable = 1;
1804 }
1805 #endif
1806
1807 //for HTcap and HTinfo parameters
1808 if(tmp_htcap_len == 0){
1809 if(info_element->len >= 4 &&
1810 info_element->data[0] == 0x00 &&
1811 info_element->data[1] == 0x90 &&
1812 info_element->data[2] == 0x4c &&
1813 info_element->data[3] == 0x033){
1814
1815 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1816 if(tmp_htcap_len != 0){
1817 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1818 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1819 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1820 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1821 }
1822 }
1823 if(tmp_htcap_len != 0)
1824 network->bssht.bdSupportHT = true;
1825 else
1826 network->bssht.bdSupportHT = false;
1827 }
1828
1829
1830 if(tmp_htinfo_len == 0){
1831 if(info_element->len >= 4 &&
1832 info_element->data[0] == 0x00 &&
1833 info_element->data[1] == 0x90 &&
1834 info_element->data[2] == 0x4c &&
1835 info_element->data[3] == 0x034){
1836
1837 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1838 if(tmp_htinfo_len != 0){
1839 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1840 if(tmp_htinfo_len){
1841 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1842 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1843 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1844 }
1845
1846 }
1847
1848 }
1849 }
1850
1851 if(ieee->aggregation){
1852 if(network->bssht.bdSupportHT){
1853 if(info_element->len >= 4 &&
1854 info_element->data[0] == 0x00 &&
1855 info_element->data[1] == 0xe0 &&
1856 info_element->data[2] == 0x4c &&
1857 info_element->data[3] == 0x02){
1858
1859 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1860 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1861
1862 }
1863 if(ht_realtek_agg_len >= 5){
1864 network->bssht.bdRT2RTAggregation = true;
1865
1866 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1867 network->bssht.bdRT2RTLongSlotTime = true;
1868 }
1869 }
1870
1871 }
1872
1873 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1874 {
1875 if ((info_element->len >= 3 &&
1876 info_element->data[0] == 0x00 &&
1877 info_element->data[1] == 0x05 &&
1878 info_element->data[2] == 0xb5) ||
1879 (info_element->len >= 3 &&
1880 info_element->data[0] == 0x00 &&
1881 info_element->data[1] == 0x0a &&
1882 info_element->data[2] == 0xf7) ||
1883 (info_element->len >= 3 &&
1884 info_element->data[0] == 0x00 &&
1885 info_element->data[1] == 0x10 &&
1886 info_element->data[2] == 0x18)){
1887
1888 network->broadcom_cap_exist = true;
1889
1890 }
1891 }
1892 if(info_element->len >= 3 &&
1893 info_element->data[0] == 0x00 &&
1894 info_element->data[1] == 0x0c &&
1895 info_element->data[2] == 0x43)
1896 {
1897 network->ralink_cap_exist = true;
1898 }
1899 else
1900 network->ralink_cap_exist = false;
1901 //added by amy for atheros AP
1902 if((info_element->len >= 3 &&
1903 info_element->data[0] == 0x00 &&
1904 info_element->data[1] == 0x03 &&
1905 info_element->data[2] == 0x7f) ||
1906 (info_element->len >= 3 &&
1907 info_element->data[0] == 0x00 &&
1908 info_element->data[1] == 0x13 &&
1909 info_element->data[2] == 0x74))
1910 {
1911 printk("========>%s(): athros AP is exist\n",__func__);
1912 network->atheros_cap_exist = true;
1913 }
1914 else
1915 network->atheros_cap_exist = false;
1916
1917 if(info_element->len >= 3 &&
1918 info_element->data[0] == 0x00 &&
1919 info_element->data[1] == 0x40 &&
1920 info_element->data[2] == 0x96)
1921 {
1922 network->cisco_cap_exist = true;
1923 }
1924 else
1925 network->cisco_cap_exist = false;
1926 //added by amy for LEAP of cisco
1927 if (info_element->len > 4 &&
1928 info_element->data[0] == 0x00 &&
1929 info_element->data[1] == 0x40 &&
1930 info_element->data[2] == 0x96 &&
1931 info_element->data[3] == 0x01)
1932 {
1933 if(info_element->len == 6)
1934 {
1935 memcpy(network->CcxRmState, &info_element[4], 2);
1936 if(network->CcxRmState[0] != 0)
1937 {
1938 network->bCcxRmEnable = true;
1939 }
1940 else
1941 network->bCcxRmEnable = false;
1942 //
1943 // CCXv4 Table 59-1 MBSSID Masks.
1944 //
1945 network->MBssidMask = network->CcxRmState[1] & 0x07;
1946 if(network->MBssidMask != 0)
1947 {
1948 network->bMBssidValid = true;
1949 network->MBssidMask = 0xff << (network->MBssidMask);
1950 cpMacAddr(network->MBssid, network->bssid);
1951 network->MBssid[5] &= network->MBssidMask;
1952 }
1953 else
1954 {
1955 network->bMBssidValid = false;
1956 }
1957 }
1958 else
1959 {
1960 network->bCcxRmEnable = false;
1961 }
1962 }
1963 if (info_element->len > 4 &&
1964 info_element->data[0] == 0x00 &&
1965 info_element->data[1] == 0x40 &&
1966 info_element->data[2] == 0x96 &&
1967 info_element->data[3] == 0x03)
1968 {
1969 if(info_element->len == 5)
1970 {
1971 network->bWithCcxVerNum = true;
1972 network->BssCcxVerNumber = info_element->data[4];
1973 }
1974 else
1975 {
1976 network->bWithCcxVerNum = false;
1977 network->BssCcxVerNumber = 0;
1978 }
1979 }
1980 break;
1981
1982 case MFIE_TYPE_RSN:
1983 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1984 info_element->len);
1985 network->rsn_ie_len = min(info_element->len + 2,
1986 MAX_WPA_IE_LEN);
1987 memcpy(network->rsn_ie, info_element,
1988 network->rsn_ie_len);
1989 break;
1990
1991 //HT related element.
1992 case MFIE_TYPE_HT_CAP:
1993 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1994 info_element->len);
1995 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1996 if(tmp_htcap_len != 0){
1997 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1998 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1999 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2000 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2001
2002 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2003 // windows driver will update WMM parameters each beacon received once connected
2004 // Linux driver is a bit different.
2005 network->bssht.bdSupportHT = true;
2006 }
2007 else
2008 network->bssht.bdSupportHT = false;
2009 break;
2010
2011
2012 case MFIE_TYPE_HT_INFO:
2013 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2014 info_element->len);
2015 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2016 if(tmp_htinfo_len){
2017 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2018 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2019 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2020 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2021 }
2022 break;
2023
2024 case MFIE_TYPE_AIRONET:
2025 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2026 info_element->len);
2027 if(info_element->len >IE_CISCO_FLAG_POSITION)
2028 {
2029 network->bWithAironetIE = true;
2030
2031 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2032 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2033 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2034 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2035 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2036 {
2037 network->bCkipSupported = true;
2038 }
2039 else
2040 {
2041 network->bCkipSupported = false;
2042 }
2043 }
2044 else
2045 {
2046 network->bWithAironetIE = false;
2047 network->bCkipSupported = false;
2048 }
2049 break;
2050 case MFIE_TYPE_QOS_PARAMETER:
2051 printk(KERN_ERR
2052 "QoS Error need to parse QOS_PARAMETER IE\n");
2053 break;
2054
2055 case MFIE_TYPE_COUNTRY:
2056 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2057 info_element->len);
2058 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2059 break;
2060 /* TODO */
2061 default:
2062 IEEE80211_DEBUG_MGMT
2063 ("Unsupported info element: %s (%d)\n",
2064 get_info_element_string(info_element->id),
2065 info_element->id);
2066 break;
2067 }
2068
2069 length -= sizeof(*info_element) + info_element->len;
2070 info_element =
2071 (struct ieee80211_info_element *)&info_element->
2072 data[info_element->len];
2073 }
2074
2075 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2076 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2077 {
2078 network->unknown_cap_exist = true;
2079 }
2080 else
2081 {
2082 network->unknown_cap_exist = false;
2083 }
2084 return 0;
2085 }
2086
2087 static inline u8 ieee80211_SignalStrengthTranslate(
2088 u8 CurrSS
2089 )
2090 {
2091 u8 RetSS;
2092
2093 // Step 1. Scale mapping.
2094 if(CurrSS >= 71 && CurrSS <= 100)
2095 {
2096 RetSS = 90 + ((CurrSS - 70) / 3);
2097 }
2098 else if(CurrSS >= 41 && CurrSS <= 70)
2099 {
2100 RetSS = 78 + ((CurrSS - 40) / 3);
2101 }
2102 else if(CurrSS >= 31 && CurrSS <= 40)
2103 {
2104 RetSS = 66 + (CurrSS - 30);
2105 }
2106 else if(CurrSS >= 21 && CurrSS <= 30)
2107 {
2108 RetSS = 54 + (CurrSS - 20);
2109 }
2110 else if(CurrSS >= 5 && CurrSS <= 20)
2111 {
2112 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2113 }
2114 else if(CurrSS == 4)
2115 {
2116 RetSS = 36;
2117 }
2118 else if(CurrSS == 3)
2119 {
2120 RetSS = 27;
2121 }
2122 else if(CurrSS == 2)
2123 {
2124 RetSS = 18;
2125 }
2126 else if(CurrSS == 1)
2127 {
2128 RetSS = 9;
2129 }
2130 else
2131 {
2132 RetSS = CurrSS;
2133 }
2134 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2135
2136 // Step 2. Smoothing.
2137
2138 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2139
2140 return RetSS;
2141 }
2142
2143 /* 0-100 index */
2144 static long ieee80211_translate_todbm(u8 signal_strength_index)
2145 {
2146 long signal_power; // in dBm.
2147
2148 // Translate to dBm (x=0.5y-95).
2149 signal_power = (long)((signal_strength_index + 1) >> 1);
2150 signal_power -= 95;
2151
2152 return signal_power;
2153 }
2154
2155 static inline int ieee80211_network_init(
2156 struct ieee80211_device *ieee,
2157 struct ieee80211_probe_response *beacon,
2158 struct ieee80211_network *network,
2159 struct ieee80211_rx_stats *stats)
2160 {
2161 #ifdef CONFIG_IEEE80211_DEBUG
2162 //char rates_str[64];
2163 //char *p;
2164 #endif
2165
2166 network->qos_data.active = 0;
2167 network->qos_data.supported = 0;
2168 network->qos_data.param_count = 0;
2169 network->qos_data.old_param_count = 0;
2170
2171 /* Pull out fixed field data */
2172 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2173 network->capability = le16_to_cpu(beacon->capability);
2174 network->last_scanned = jiffies;
2175 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2176 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2177 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
2178 /* Where to pull this? beacon->listen_interval;*/
2179 network->listen_interval = 0x0A;
2180 network->rates_len = network->rates_ex_len = 0;
2181 network->last_associate = 0;
2182 network->ssid_len = 0;
2183 network->flags = 0;
2184 network->atim_window = 0;
2185 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2186 0x3 : 0x0;
2187 network->berp_info_valid = false;
2188 network->broadcom_cap_exist = false;
2189 network->ralink_cap_exist = false;
2190 network->atheros_cap_exist = false;
2191 network->cisco_cap_exist = false;
2192 network->unknown_cap_exist = false;
2193 #ifdef THOMAS_TURBO
2194 network->Turbo_Enable = 0;
2195 #endif
2196 network->CountryIeLen = 0;
2197 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2198 //Initialize HT parameters
2199 //ieee80211_ht_initialize(&network->bssht);
2200 HTInitializeBssDesc(&network->bssht);
2201 if (stats->freq == IEEE80211_52GHZ_BAND) {
2202 /* for A band (No DS info) */
2203 network->channel = stats->received_channel;
2204 } else
2205 network->flags |= NETWORK_HAS_CCK;
2206
2207 network->wpa_ie_len = 0;
2208 network->rsn_ie_len = 0;
2209
2210 if (ieee80211_parse_info_param
2211 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2212 return 1;
2213
2214 network->mode = 0;
2215 if (stats->freq == IEEE80211_52GHZ_BAND)
2216 network->mode = IEEE_A;
2217 else {
2218 if (network->flags & NETWORK_HAS_OFDM)
2219 network->mode |= IEEE_G;
2220 if (network->flags & NETWORK_HAS_CCK)
2221 network->mode |= IEEE_B;
2222 }
2223
2224 if (network->mode == 0) {
2225 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2226 "network.\n",
2227 escape_essid(network->ssid,
2228 network->ssid_len),
2229 network->bssid);
2230 return 1;
2231 }
2232
2233 if(network->bssht.bdSupportHT){
2234 if(network->mode == IEEE_A)
2235 network->mode = IEEE_N_5G;
2236 else if(network->mode & (IEEE_G | IEEE_B))
2237 network->mode = IEEE_N_24G;
2238 }
2239 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2240 network->flags |= NETWORK_EMPTY_ESSID;
2241
2242 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2243 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2244 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2245
2246 memcpy(&network->stats, stats, sizeof(network->stats));
2247
2248 return 0;
2249 }
2250
2251 static inline int is_same_network(struct ieee80211_network *src,
2252 struct ieee80211_network *dst, struct ieee80211_device *ieee)
2253 {
2254 /* A network is only a duplicate if the channel, BSSID, ESSID
2255 * and the capability field (in particular IBSS and BSS) all match.
2256 * We treat all <hidden> with the same BSSID and channel
2257 * as one network */
2258 return //((src->ssid_len == dst->ssid_len) &&
2259 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2260 (src->channel == dst->channel) &&
2261 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2262 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2263 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2264 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2265 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2266 ((src->capability & WLAN_CAPABILITY_BSS) ==
2267 (dst->capability & WLAN_CAPABILITY_BSS)));
2268 }
2269
2270 static inline void update_network(struct ieee80211_network *dst,
2271 struct ieee80211_network *src)
2272 {
2273 int qos_active;
2274 u8 old_param;
2275
2276 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2277 dst->capability = src->capability;
2278 memcpy(dst->rates, src->rates, src->rates_len);
2279 dst->rates_len = src->rates_len;
2280 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2281 dst->rates_ex_len = src->rates_ex_len;
2282 if (src->ssid_len > 0)
2283 {
2284 memset(dst->ssid, 0, dst->ssid_len);
2285 dst->ssid_len = src->ssid_len;
2286 memcpy(dst->ssid, src->ssid, src->ssid_len);
2287 }
2288 dst->mode = src->mode;
2289 dst->flags = src->flags;
2290 dst->time_stamp[0] = src->time_stamp[0];
2291 dst->time_stamp[1] = src->time_stamp[1];
2292 if (src->flags & NETWORK_HAS_ERP_VALUE)
2293 {
2294 dst->erp_value = src->erp_value;
2295 dst->berp_info_valid = src->berp_info_valid = true;
2296 }
2297 dst->beacon_interval = src->beacon_interval;
2298 dst->listen_interval = src->listen_interval;
2299 dst->atim_window = src->atim_window;
2300 dst->dtim_period = src->dtim_period;
2301 dst->dtim_data = src->dtim_data;
2302 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2303 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2304 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2305
2306 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2307 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2308 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2309 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2310 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2311 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2312 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2313 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2314 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2315 dst->ralink_cap_exist = src->ralink_cap_exist;
2316 dst->atheros_cap_exist = src->atheros_cap_exist;
2317 dst->cisco_cap_exist = src->cisco_cap_exist;
2318 dst->unknown_cap_exist = src->unknown_cap_exist;
2319 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2320 dst->wpa_ie_len = src->wpa_ie_len;
2321 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2322 dst->rsn_ie_len = src->rsn_ie_len;
2323
2324 dst->last_scanned = jiffies;
2325 /* qos related parameters */
2326 //qos_active = src->qos_data.active;
2327 qos_active = dst->qos_data.active;
2328 //old_param = dst->qos_data.old_param_count;
2329 old_param = dst->qos_data.param_count;
2330 if(dst->flags & NETWORK_HAS_QOS_MASK)
2331 memcpy(&dst->qos_data, &src->qos_data,
2332 sizeof(struct ieee80211_qos_data));
2333 else {
2334 dst->qos_data.supported = src->qos_data.supported;
2335 dst->qos_data.param_count = src->qos_data.param_count;
2336 }
2337
2338 if (dst->qos_data.supported == 1) {
2339 dst->QoS_Enable = 1;
2340 if(dst->ssid_len)
2341 IEEE80211_DEBUG_QOS
2342 ("QoS the network %s is QoS supported\n",
2343 dst->ssid);
2344 else
2345 IEEE80211_DEBUG_QOS
2346 ("QoS the network is QoS supported\n");
2347 }
2348 dst->qos_data.active = qos_active;
2349 dst->qos_data.old_param_count = old_param;
2350
2351 /* dst->last_associate is not overwritten */
2352 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2353 if (src->wmm_param[0].aci_aifsn|| \
2354 src->wmm_param[1].aci_aifsn|| \
2355 src->wmm_param[2].aci_aifsn|| \
2356 src->wmm_param[3].aci_aifsn) {
2357 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2358 }
2359 //dst->QoS_Enable = src->QoS_Enable;
2360 #ifdef THOMAS_TURBO
2361 dst->Turbo_Enable = src->Turbo_Enable;
2362 #endif
2363
2364 dst->CountryIeLen = src->CountryIeLen;
2365 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2366
2367 //added by amy for LEAP
2368 dst->bWithAironetIE = src->bWithAironetIE;
2369 dst->bCkipSupported = src->bCkipSupported;
2370 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2371 dst->bCcxRmEnable = src->bCcxRmEnable;
2372 dst->MBssidMask = src->MBssidMask;
2373 dst->bMBssidValid = src->bMBssidValid;
2374 memcpy(dst->MBssid, src->MBssid, 6);
2375 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2376 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2377
2378 }
2379
2380 static inline int is_beacon(__le16 fc)
2381 {
2382 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2383 }
2384
2385 static inline void ieee80211_process_probe_response(
2386 struct ieee80211_device *ieee,
2387 struct ieee80211_probe_response *beacon,
2388 struct ieee80211_rx_stats *stats)
2389 {
2390 struct ieee80211_network network;
2391 struct ieee80211_network *target;
2392 struct ieee80211_network *oldest = NULL;
2393 #ifdef CONFIG_IEEE80211_DEBUG
2394 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2395 #endif
2396 int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl));
2397 unsigned long flags;
2398 short renew;
2399 u16 capability;
2400 //u8 wmm_info;
2401
2402 memset(&network, 0, sizeof(struct ieee80211_network));
2403 capability = le16_to_cpu(beacon->capability);
2404 IEEE80211_DEBUG_SCAN(
2405 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2406 escape_essid(info_element->data, info_element->len),
2407 beacon->header.addr3,
2408 (capability & (1 << 0xf)) ? '1' : '0',
2409 (capability & (1 << 0xe)) ? '1' : '0',
2410 (capability & (1 << 0xd)) ? '1' : '0',
2411 (capability & (1 << 0xc)) ? '1' : '0',
2412 (capability & (1 << 0xb)) ? '1' : '0',
2413 (capability & (1 << 0xa)) ? '1' : '0',
2414 (capability & (1 << 0x9)) ? '1' : '0',
2415 (capability & (1 << 0x8)) ? '1' : '0',
2416 (capability & (1 << 0x7)) ? '1' : '0',
2417 (capability & (1 << 0x6)) ? '1' : '0',
2418 (capability & (1 << 0x5)) ? '1' : '0',
2419 (capability & (1 << 0x4)) ? '1' : '0',
2420 (capability & (1 << 0x3)) ? '1' : '0',
2421 (capability & (1 << 0x2)) ? '1' : '0',
2422 (capability & (1 << 0x1)) ? '1' : '0',
2423 (capability & (1 << 0x0)) ? '1' : '0');
2424
2425 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
2426 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2427 escape_essid(info_element->data,
2428 info_element->len),
2429 beacon->header.addr3,
2430 fc == IEEE80211_STYPE_PROBE_RESP ?
2431 "PROBE RESPONSE" : "BEACON");
2432 return;
2433 }
2434
2435 // For Asus EeePc request,
2436 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2437 // wireless adapter should follow the country code.
2438 // (2) If there is no any country code in beacon,
2439 // then wireless adapter should do active scan from ch1~11 and
2440 // passive scan from ch12~14
2441
2442 if (!IsLegalChannel(ieee, network.channel))
2443 return;
2444 if (ieee->bGlobalDomain)
2445 {
2446 if (fc == IEEE80211_STYPE_PROBE_RESP)
2447 {
2448 // Case 1: Country code
2449 if(IS_COUNTRY_IE_VALID(ieee) )
2450 {
2451 if (!IsLegalChannel(ieee, network.channel)) {
2452 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2453 return;
2454 }
2455 }
2456 // Case 2: No any country code.
2457 else
2458 {
2459 // Filter over channel ch12~14
2460 if (network.channel > 11)
2461 {
2462 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2463 return;
2464 }
2465 }
2466 }
2467 else
2468 {
2469 // Case 1: Country code
2470 if(IS_COUNTRY_IE_VALID(ieee) )
2471 {
2472 if (!IsLegalChannel(ieee, network.channel)) {
2473 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2474 return;
2475 }
2476 }
2477 // Case 2: No any country code.
2478 else
2479 {
2480 // Filter over channel ch12~14
2481 if (network.channel > 14)
2482 {
2483 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2484 return;
2485 }
2486 }
2487 }
2488 }
2489
2490 /* The network parsed correctly -- so now we scan our known networks
2491 * to see if we can find it in our list.
2492 *
2493 * NOTE: This search is definitely not optimized. Once its doing
2494 * the "right thing" we'll optimize it for efficiency if
2495 * necessary */
2496
2497 /* Search for this entry in the list and update it if it is
2498 * already there. */
2499
2500 spin_lock_irqsave(&ieee->lock, flags);
2501
2502 if (is_same_network(&ieee->current_network, &network, ieee)) {
2503 update_network(&ieee->current_network, &network);
2504 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2505 && ieee->current_network.berp_info_valid){
2506 if(ieee->current_network.erp_value& ERP_UseProtection)
2507 ieee->current_network.buseprotection = true;
2508 else
2509 ieee->current_network.buseprotection = false;
2510 }
2511 if(is_beacon(beacon->header.frame_ctl))
2512 {
2513 if(ieee->state == IEEE80211_LINKED)
2514 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2515 }
2516 else //hidden AP
2517 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2518 }
2519
2520 list_for_each_entry(target, &ieee->network_list, list) {
2521 if (is_same_network(target, &network, ieee))
2522 break;
2523 if ((oldest == NULL) ||
2524 (target->last_scanned < oldest->last_scanned))
2525 oldest = target;
2526 }
2527
2528 /* If we didn't find a match, then get a new network slot to initialize
2529 * with this beacon's information */
2530 if (&target->list == &ieee->network_list) {
2531 if (list_empty(&ieee->network_free_list)) {
2532 /* If there are no more slots, expire the oldest */
2533 list_del(&oldest->list);
2534 target = oldest;
2535 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2536 "network list.\n",
2537 escape_essid(target->ssid,
2538 target->ssid_len),
2539 target->bssid);
2540 } else {
2541 /* Otherwise just pull from the free list */
2542 target = list_entry(ieee->network_free_list.next,
2543 struct ieee80211_network, list);
2544 list_del(ieee->network_free_list.next);
2545 }
2546
2547
2548 #ifdef CONFIG_IEEE80211_DEBUG
2549 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2550 escape_essid(network.ssid,
2551 network.ssid_len),
2552 network.bssid,
2553 fc == 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 fc == IEEE80211_STYPE_PROBE_RESP ?
2566 "PROBE RESPONSE" : "BEACON");
2567
2568 /* we have an entry and we are going to update it. But this entry may
2569 * be already expired. In this case we do the same as we found a new
2570 * net and call the new_net handler
2571 */
2572 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2573 //YJ,add,080819,for hidden ap
2574 if(is_beacon(beacon->header.frame_ctl) == 0)
2575 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2576 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2577 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2578 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2579 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2580 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2581 renew = 1;
2582 //YJ,add,080819,for hidden ap,end
2583
2584 update_network(target, &network);
2585 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2586 ieee80211_softmac_new_net(ieee,&network);
2587 }
2588
2589 spin_unlock_irqrestore(&ieee->lock, flags);
2590 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2591 (ieee->state == IEEE80211_LINKED)) {
2592 if (ieee->handle_beacon != NULL) {
2593 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2594 }
2595 }
2596 }
2597
2598 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2599 struct rtl_80211_hdr_4addr *header,
2600 struct ieee80211_rx_stats *stats)
2601 {
2602 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
2603
2604 case IEEE80211_STYPE_BEACON:
2605 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2606 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2607 IEEE80211_DEBUG_SCAN("Beacon\n");
2608 ieee80211_process_probe_response(
2609 ieee, (struct ieee80211_probe_response *)header, stats);
2610 break;
2611
2612 case IEEE80211_STYPE_PROBE_RESP:
2613 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2614 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2615 IEEE80211_DEBUG_SCAN("Probe response\n");
2616 ieee80211_process_probe_response(
2617 ieee, (struct ieee80211_probe_response *)header, stats);
2618 break;
2619
2620 }
2621 }
2622 EXPORT_SYMBOL(ieee80211_rx_mgt);
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