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Merge tag 'modules-for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu...
[mirror_ubuntu-hirsute-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 /* just for debug purpose */
784 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
785
786 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
787 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
788 bIsAggregateFrame = true;
789 }
790
791 if (IEEE80211_QOS_HAS_SEQ(fc)) {
792 LLCOffset += 2;
793 }
794
795 if (rx_stats->bContainHTC) {
796 LLCOffset += sHTCLng;
797 }
798 // Null packet, don't indicate it to upper layer
799 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
800
801 if (skb->len <= ChkLength)
802 return 0;
803
804 skb_pull(skb, LLCOffset);
805
806 if(!bIsAggregateFrame) {
807 rxb->nr_subframes = 1;
808 #ifdef JOHN_NOCPY
809 rxb->subframes[0] = skb;
810 #else
811 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
812 #endif
813
814 memcpy(rxb->src,src,ETH_ALEN);
815 memcpy(rxb->dst,dst,ETH_ALEN);
816 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
817 return 1;
818 } else {
819 rxb->nr_subframes = 0;
820 memcpy(rxb->src,src,ETH_ALEN);
821 memcpy(rxb->dst,dst,ETH_ALEN);
822 while(skb->len > ETHERNET_HEADER_SIZE) {
823 /* Offset 12 denote 2 mac address */
824 nSubframe_Length = *((u16 *)(skb->data + 12));
825 //==m==>change the length order
826 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
827
828 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
829 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
830 __func__, rxb->nr_subframes);
831 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
832 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
833 printk("The Packet SeqNum is %d\n",SeqNum);
834 return 0;
835 }
836
837 /* move the data point to data content */
838 skb_pull(skb, ETHERNET_HEADER_SIZE);
839
840 #ifdef JOHN_NOCPY
841 sub_skb = skb_clone(skb, GFP_ATOMIC);
842 sub_skb->len = nSubframe_Length;
843 sub_skb->tail = sub_skb->data + nSubframe_Length;
844 #else
845 /* Allocate new skb for releasing to upper layer */
846 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
847 if (!sub_skb)
848 return 0;
849 skb_reserve(sub_skb, 12);
850 skb_put_data(sub_skb, skb->data, nSubframe_Length);
851 #endif
852 rxb->subframes[rxb->nr_subframes++] = sub_skb;
853 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
854 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
855 break;
856 }
857 skb_pull(skb, nSubframe_Length);
858
859 if (skb->len != 0) {
860 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
861 if (nPadding_Length == 4) {
862 nPadding_Length = 0;
863 }
864
865 if (skb->len < nPadding_Length) {
866 return 0;
867 }
868
869 skb_pull(skb, nPadding_Length);
870 }
871 }
872 #ifdef JOHN_NOCPY
873 dev_kfree_skb(skb);
874 #endif
875 //{just for debug added by david
876 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
877 //}
878 return rxb->nr_subframes;
879 }
880 }
881
882 /* All received frames are sent to this function. @skb contains the frame in
883 * IEEE 802.11 format, i.e., in the format it was sent over air.
884 * This function is called only as a tasklet (software IRQ). */
885 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
886 struct ieee80211_rx_stats *rx_stats)
887 {
888 struct net_device *dev = ieee->dev;
889 struct rtl_80211_hdr_4addr *hdr;
890 //struct rtl_80211_hdr_3addrqos *hdr;
891
892 size_t hdrlen;
893 u16 fc, type, stype, sc;
894 struct net_device_stats *stats;
895 unsigned int frag;
896 u8 *payload;
897 u16 ethertype;
898 //added by amy for reorder
899 u8 TID = 0;
900 u16 SeqNum = 0;
901 PRX_TS_RECORD pTS = NULL;
902 //bool bIsAggregateFrame = false;
903 //added by amy for reorder
904 #ifdef NOT_YET
905 struct net_device *wds = NULL;
906 struct net_device *wds = NULL;
907 int from_assoc_ap = 0;
908 void *sta = NULL;
909 #endif
910 // u16 qos_ctl = 0;
911 u8 dst[ETH_ALEN];
912 u8 src[ETH_ALEN];
913 u8 bssid[ETH_ALEN];
914 struct ieee80211_crypt_data *crypt = NULL;
915 int keyidx = 0;
916
917 int i;
918 struct ieee80211_rxb *rxb = NULL;
919 // cheat the hdr type
920 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
921 stats = &ieee->stats;
922
923 if (skb->len < 10) {
924 printk(KERN_INFO "%s: SKB length < 10\n",
925 dev->name);
926 goto rx_dropped;
927 }
928
929 fc = le16_to_cpu(hdr->frame_ctl);
930 type = WLAN_FC_GET_TYPE(fc);
931 stype = WLAN_FC_GET_STYPE(fc);
932 sc = le16_to_cpu(hdr->seq_ctl);
933
934 frag = WLAN_GET_SEQ_FRAG(sc);
935 hdrlen = ieee80211_get_hdrlen(fc);
936
937 if (HTCCheck(ieee, skb->data))
938 {
939 if(net_ratelimit())
940 printk("find HTCControl\n");
941 hdrlen += 4;
942 rx_stats->bContainHTC = true;
943 }
944
945 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
946 #ifdef NOT_YET
947 /* Put this code here so that we avoid duplicating it in all
948 * Rx paths. - Jean II */
949 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
950 /* If spy monitoring on */
951 if (iface->spy_data.spy_number > 0) {
952 struct iw_quality wstats;
953 wstats.level = rx_stats->rssi;
954 wstats.noise = rx_stats->noise;
955 wstats.updated = 6; /* No qual value */
956 /* Update spy records */
957 wireless_spy_update(dev, hdr->addr2, &wstats);
958 }
959 #endif /* IW_WIRELESS_SPY */
960 hostap_update_rx_stats(local->ap, hdr, rx_stats);
961 #endif
962
963 if (ieee->iw_mode == IW_MODE_MONITOR) {
964 ieee80211_monitor_rx(ieee, skb, rx_stats);
965 stats->rx_packets++;
966 stats->rx_bytes += skb->len;
967 return 1;
968 }
969
970 if (ieee->host_decrypt) {
971 int idx = 0;
972 if (skb->len >= hdrlen + 3)
973 idx = skb->data[hdrlen + 3] >> 6;
974 crypt = ieee->crypt[idx];
975 #ifdef NOT_YET
976 sta = NULL;
977
978 /* Use station specific key to override default keys if the
979 * receiver address is a unicast address ("individual RA"). If
980 * bcrx_sta_key parameter is set, station specific key is used
981 * even with broad/multicast targets (this is against IEEE
982 * 802.11, but makes it easier to use different keys with
983 * stations that do not support WEP key mapping). */
984
985 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
986 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
987 &sta);
988 #endif
989
990 /* allow NULL decrypt to indicate an station specific override
991 * for default encryption */
992 if (crypt && (crypt->ops == NULL ||
993 crypt->ops->decrypt_mpdu == NULL))
994 crypt = NULL;
995
996 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
997 /* This seems to be triggered by some (multicast?)
998 * frames from other than current BSS, so just drop the
999 * frames silently instead of filling system log with
1000 * these reports. */
1001 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1002 " (SA=%pM)\n",
1003 hdr->addr2);
1004 ieee->ieee_stats.rx_discards_undecryptable++;
1005 goto rx_dropped;
1006 }
1007 }
1008
1009 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1010 goto rx_dropped;
1011
1012 // if QoS enabled, should check the sequence for each of the AC
1013 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
1014 if (is_duplicate_packet(ieee, hdr))
1015 goto rx_dropped;
1016
1017 }
1018 else
1019 {
1020 PRX_TS_RECORD pRxTS = NULL;
1021 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid);
1022 if(GetTs(
1023 ieee,
1024 (PTS_COMMON_INFO *) &pRxTS,
1025 hdr->addr2,
1026 Frame_QoSTID((u8 *)(skb->data)),
1027 RX_DIR,
1028 true))
1029 {
1030
1031 // 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));
1032 if ((fc & (1<<11)) &&
1033 (frag == pRxTS->RxLastFragNum) &&
1034 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
1035 goto rx_dropped;
1036 }
1037 else
1038 {
1039 pRxTS->RxLastFragNum = frag;
1040 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1041 }
1042 }
1043 else
1044 {
1045 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
1046 goto rx_dropped;
1047 }
1048 }
1049 if (type == IEEE80211_FTYPE_MGMT) {
1050
1051
1052 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1053 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1054 goto rx_dropped;
1055 else
1056 goto rx_exit;
1057 }
1058
1059 /* Data frame - extract src/dst addresses */
1060 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1061 case IEEE80211_FCTL_FROMDS:
1062 memcpy(dst, hdr->addr1, ETH_ALEN);
1063 memcpy(src, hdr->addr3, ETH_ALEN);
1064 memcpy(bssid, hdr->addr2, ETH_ALEN);
1065 break;
1066 case IEEE80211_FCTL_TODS:
1067 memcpy(dst, hdr->addr3, ETH_ALEN);
1068 memcpy(src, hdr->addr2, ETH_ALEN);
1069 memcpy(bssid, hdr->addr1, ETH_ALEN);
1070 break;
1071 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1072 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1073 goto rx_dropped;
1074 memcpy(dst, hdr->addr3, ETH_ALEN);
1075 memcpy(src, hdr->addr4, ETH_ALEN);
1076 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1077 break;
1078 default:
1079 memcpy(dst, hdr->addr1, ETH_ALEN);
1080 memcpy(src, hdr->addr2, ETH_ALEN);
1081 memcpy(bssid, hdr->addr3, ETH_ALEN);
1082 break;
1083 }
1084
1085 #ifdef NOT_YET
1086 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1087 goto rx_dropped;
1088 if (wds) {
1089 skb->dev = dev = wds;
1090 stats = hostap_get_stats(dev);
1091 }
1092
1093 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1094 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1095 ieee->stadev &&
1096 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1097 /* Frame from BSSID of the AP for which we are a client */
1098 skb->dev = dev = ieee->stadev;
1099 stats = hostap_get_stats(dev);
1100 from_assoc_ap = 1;
1101 }
1102
1103 if ((ieee->iw_mode == IW_MODE_MASTER ||
1104 ieee->iw_mode == IW_MODE_REPEAT) &&
1105 !from_assoc_ap) {
1106 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1107 wds != NULL)) {
1108 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1109 case AP_RX_CONTINUE:
1110 break;
1111 case AP_RX_DROP:
1112 goto rx_dropped;
1113 case AP_RX_EXIT:
1114 goto rx_exit;
1115 }
1116 }
1117 #endif
1118 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1119 /* Nullfunc frames may have PS-bit set, so they must be passed to
1120 * hostap_handle_sta_rx() before being dropped here. */
1121 if (stype != IEEE80211_STYPE_DATA &&
1122 stype != IEEE80211_STYPE_DATA_CFACK &&
1123 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1124 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1125 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1126 ) {
1127 if (stype != IEEE80211_STYPE_NULLFUNC)
1128 IEEE80211_DEBUG_DROP(
1129 "RX: dropped data frame "
1130 "with no data (type=0x%02x, "
1131 "subtype=0x%02x, len=%d)\n",
1132 type, stype, skb->len);
1133 goto rx_dropped;
1134 }
1135 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1136 goto rx_dropped;
1137
1138 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1139
1140 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1141 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1142 {
1143 printk("decrypt frame error\n");
1144 goto rx_dropped;
1145 }
1146
1147
1148 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1149
1150 /* skb: hdr + (possibly fragmented) plaintext payload */
1151 // PR: FIXME: hostap has additional conditions in the "if" below:
1152 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1153 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1154 int flen;
1155 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1156 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1157
1158 if (!frag_skb) {
1159 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1160 "Rx cannot get skb from fragment "
1161 "cache (morefrag=%d seq=%u frag=%u)\n",
1162 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1163 WLAN_GET_SEQ_SEQ(sc), frag);
1164 goto rx_dropped;
1165 }
1166 flen = skb->len;
1167 if (frag != 0)
1168 flen -= hdrlen;
1169
1170 if (frag_skb->tail + flen > frag_skb->end) {
1171 printk(KERN_WARNING "%s: host decrypted and "
1172 "reassembled frame did not fit skb\n",
1173 dev->name);
1174 ieee80211_frag_cache_invalidate(ieee, hdr);
1175 goto rx_dropped;
1176 }
1177
1178 if (frag == 0) {
1179 /* copy first fragment (including full headers) into
1180 * beginning of the fragment cache skb */
1181 skb_put_data(frag_skb, skb->data, flen);
1182 } else {
1183 /* append frame payload to the end of the fragment
1184 * cache skb */
1185 skb_put_data(frag_skb, skb->data + hdrlen, flen);
1186 }
1187 dev_kfree_skb_any(skb);
1188 skb = NULL;
1189
1190 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1191 /* more fragments expected - leave the skb in fragment
1192 * cache for now; it will be delivered to upper layers
1193 * after all fragments have been received */
1194 goto rx_exit;
1195 }
1196
1197 /* this was the last fragment and the frame will be
1198 * delivered, so remove skb from fragment cache */
1199 skb = frag_skb;
1200 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1201 ieee80211_frag_cache_invalidate(ieee, hdr);
1202 }
1203
1204 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1205 * encrypted/authenticated */
1206 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1207 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1208 {
1209 printk("==>decrypt msdu error\n");
1210 goto rx_dropped;
1211 }
1212
1213 //added by amy for AP roaming
1214 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1215 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1216
1217 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
1218 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1219 if (/*ieee->ieee802_1x &&*/
1220 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1221
1222 #ifdef CONFIG_IEEE80211_DEBUG
1223 /* pass unencrypted EAPOL frames even if encryption is
1224 * configured */
1225 struct eapol *eap = (struct eapol *)(skb->data +
1226 24);
1227 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1228 eap_get_type(eap->type));
1229 #endif
1230 } else {
1231 IEEE80211_DEBUG_DROP(
1232 "encryption configured, but RX "
1233 "frame not encrypted (SA=%pM)\n",
1234 hdr->addr2);
1235 goto rx_dropped;
1236 }
1237 }
1238
1239 #ifdef CONFIG_IEEE80211_DEBUG
1240 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1241 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1242 struct eapol *eap = (struct eapol *)(skb->data +
1243 24);
1244 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1245 eap_get_type(eap->type));
1246 }
1247 #endif
1248
1249 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1250 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1251 IEEE80211_DEBUG_DROP(
1252 "dropped unencrypted RX data "
1253 "frame from %pM"
1254 " (drop_unencrypted=1)\n",
1255 hdr->addr2);
1256 goto rx_dropped;
1257 }
1258 /*
1259 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1260 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1261 }
1262 */
1263 //added by amy for reorder
1264 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1265 && !is_multicast_ether_addr(hdr->addr1))
1266 {
1267 TID = Frame_QoSTID(skb->data);
1268 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1269 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true);
1270 if (TID !=0 && TID !=3)
1271 {
1272 ieee->bis_any_nonbepkts = true;
1273 }
1274 }
1275 //added by amy for reorder
1276 /* skb: hdr + (possible reassembled) full plaintext payload */
1277 payload = skb->data + hdrlen;
1278 //ethertype = (payload[6] << 8) | payload[7];
1279 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
1280 if (!rxb)
1281 goto rx_dropped;
1282 /* to parse amsdu packets */
1283 /* qos data packets & reserved bit is 1 */
1284 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
1285 /* only to free rxb, and not submit the packets to upper layer */
1286 for(i =0; i < rxb->nr_subframes; i++) {
1287 dev_kfree_skb(rxb->subframes[i]);
1288 }
1289 kfree(rxb);
1290 rxb = NULL;
1291 goto rx_dropped;
1292 }
1293
1294 //added by amy for reorder
1295 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){
1296 //added by amy for reorder
1297 for(i = 0; i<rxb->nr_subframes; i++) {
1298 struct sk_buff *sub_skb = rxb->subframes[i];
1299
1300 if (sub_skb) {
1301 /* convert hdr + possible LLC headers into Ethernet header */
1302 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1303 if (sub_skb->len >= 8 &&
1304 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1305 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1306 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1307 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1308 * replace EtherType */
1309 skb_pull(sub_skb, SNAP_SIZE);
1310 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1311 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1312 } else {
1313 u16 len;
1314 /* Leave Ethernet header part of hdr and full payload */
1315 len = be16_to_cpu(htons(sub_skb->len));
1316 memcpy(skb_push(sub_skb, 2), &len, 2);
1317 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1318 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1319 }
1320
1321 stats->rx_packets++;
1322 stats->rx_bytes += sub_skb->len;
1323 if (is_multicast_ether_addr(dst)) {
1324 stats->multicast++;
1325 }
1326
1327 /* Indicat the packets to upper layer */
1328 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1329 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1330 sub_skb->dev = dev;
1331 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1332 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1333 ieee->last_rx_ps_time = jiffies;
1334 netif_rx(sub_skb);
1335 }
1336 }
1337 kfree(rxb);
1338 rxb = NULL;
1339
1340 }
1341 else
1342 {
1343 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
1344 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1345 }
1346 #ifndef JOHN_NOCPY
1347 dev_kfree_skb(skb);
1348 #endif
1349
1350 rx_exit:
1351 #ifdef NOT_YET
1352 if (sta)
1353 hostap_handle_sta_release(sta);
1354 #endif
1355 return 1;
1356
1357 rx_dropped:
1358 kfree(rxb);
1359 rxb = NULL;
1360 stats->rx_dropped++;
1361
1362 /* Returning 0 indicates to caller that we have not handled the SKB--
1363 * so it is still allocated and can be used again by underlying
1364 * hardware as a DMA target */
1365 return 0;
1366 }
1367 EXPORT_SYMBOL(ieee80211_rx);
1368
1369 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1370
1371 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1372
1373 /*
1374 * Make the structure we read from the beacon packet to have
1375 * the right values
1376 */
1377 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1378 *info_element, int sub_type)
1379 {
1380
1381 if (info_element->qui_subtype != sub_type)
1382 return -1;
1383 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1384 return -1;
1385 if (info_element->qui_type != QOS_OUI_TYPE)
1386 return -1;
1387 if (info_element->version != QOS_VERSION_1)
1388 return -1;
1389
1390 return 0;
1391 }
1392
1393
1394 /*
1395 * Parse a QoS parameter element
1396 */
1397 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1398 *element_param, struct ieee80211_info_element
1399 *info_element)
1400 {
1401 int ret = 0;
1402 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1403
1404 if ((info_element == NULL) || (element_param == NULL))
1405 return -1;
1406
1407 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1408 memcpy(element_param->info_element.qui, info_element->data,
1409 info_element->len);
1410 element_param->info_element.elementID = info_element->id;
1411 element_param->info_element.length = info_element->len;
1412 } else
1413 ret = -1;
1414 if (ret == 0)
1415 ret = ieee80211_verify_qos_info(&element_param->info_element,
1416 QOS_OUI_PARAM_SUB_TYPE);
1417 return ret;
1418 }
1419
1420 /*
1421 * Parse a QoS information element
1422 */
1423 static int ieee80211_read_qos_info_element(struct
1424 ieee80211_qos_information_element
1425 *element_info, struct ieee80211_info_element
1426 *info_element)
1427 {
1428 int ret = 0;
1429 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1430
1431 if (element_info == NULL)
1432 return -1;
1433 if (info_element == NULL)
1434 return -1;
1435
1436 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1437 memcpy(element_info->qui, info_element->data,
1438 info_element->len);
1439 element_info->elementID = info_element->id;
1440 element_info->length = info_element->len;
1441 } else
1442 ret = -1;
1443
1444 if (ret == 0)
1445 ret = ieee80211_verify_qos_info(element_info,
1446 QOS_OUI_INFO_SUB_TYPE);
1447 return ret;
1448 }
1449
1450
1451 /*
1452 * Write QoS parameters from the ac parameters.
1453 */
1454 static int ieee80211_qos_convert_ac_to_parameters(struct
1455 ieee80211_qos_parameter_info
1456 *param_elm, struct
1457 ieee80211_qos_parameters
1458 *qos_param)
1459 {
1460 int i;
1461 struct ieee80211_qos_ac_parameter *ac_params;
1462 u8 aci;
1463 //u8 cw_min;
1464 //u8 cw_max;
1465
1466 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1467 ac_params = &(param_elm->ac_params_record[i]);
1468
1469 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1470
1471 if(aci >= QOS_QUEUE_NUM)
1472 continue;
1473 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1474
1475 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1476 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1477
1478 qos_param->cw_min[aci] =
1479 cpu_to_le16(ac_params->ecw_min_max & 0x0F);
1480
1481 qos_param->cw_max[aci] =
1482 cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4);
1483
1484 qos_param->flag[aci] =
1485 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1486 qos_param->tx_op_limit[aci] = ac_params->tx_op_limit;
1487 }
1488 return 0;
1489 }
1490
1491 /*
1492 * we have a generic data element which it may contain QoS information or
1493 * parameters element. check the information element length to decide
1494 * which type to read
1495 */
1496 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1497 *info_element,
1498 struct ieee80211_network *network)
1499 {
1500 int rc = 0;
1501 struct ieee80211_qos_parameters *qos_param = NULL;
1502 struct ieee80211_qos_information_element qos_info_element;
1503
1504 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1505
1506 if (rc == 0) {
1507 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1508 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1509 } else {
1510 struct ieee80211_qos_parameter_info param_element;
1511
1512 rc = ieee80211_read_qos_param_element(&param_element,
1513 info_element);
1514 if (rc == 0) {
1515 qos_param = &(network->qos_data.parameters);
1516 ieee80211_qos_convert_ac_to_parameters(&param_element,
1517 qos_param);
1518 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1519 network->qos_data.param_count =
1520 param_element.info_element.ac_info & 0x0F;
1521 }
1522 }
1523
1524 if (rc == 0) {
1525 IEEE80211_DEBUG_QOS("QoS is supported\n");
1526 network->qos_data.supported = 1;
1527 }
1528 return rc;
1529 }
1530
1531 #ifdef CONFIG_IEEE80211_DEBUG
1532 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1533
1534 static const char *get_info_element_string(u16 id)
1535 {
1536 switch (id) {
1537 MFIE_STRING(SSID);
1538 MFIE_STRING(RATES);
1539 MFIE_STRING(FH_SET);
1540 MFIE_STRING(DS_SET);
1541 MFIE_STRING(CF_SET);
1542 MFIE_STRING(TIM);
1543 MFIE_STRING(IBSS_SET);
1544 MFIE_STRING(COUNTRY);
1545 MFIE_STRING(HOP_PARAMS);
1546 MFIE_STRING(HOP_TABLE);
1547 MFIE_STRING(REQUEST);
1548 MFIE_STRING(CHALLENGE);
1549 MFIE_STRING(POWER_CONSTRAINT);
1550 MFIE_STRING(POWER_CAPABILITY);
1551 MFIE_STRING(TPC_REQUEST);
1552 MFIE_STRING(TPC_REPORT);
1553 MFIE_STRING(SUPP_CHANNELS);
1554 MFIE_STRING(CSA);
1555 MFIE_STRING(MEASURE_REQUEST);
1556 MFIE_STRING(MEASURE_REPORT);
1557 MFIE_STRING(QUIET);
1558 MFIE_STRING(IBSS_DFS);
1559 // MFIE_STRING(ERP_INFO);
1560 MFIE_STRING(RSN);
1561 MFIE_STRING(RATES_EX);
1562 MFIE_STRING(GENERIC);
1563 MFIE_STRING(QOS_PARAMETER);
1564 default:
1565 return "UNKNOWN";
1566 }
1567 }
1568 #endif
1569
1570 static inline void ieee80211_extract_country_ie(
1571 struct ieee80211_device *ieee,
1572 struct ieee80211_info_element *info_element,
1573 struct ieee80211_network *network,
1574 u8 *addr2
1575 )
1576 {
1577 if (IS_DOT11D_ENABLE(ieee))
1578 {
1579 if (info_element->len!= 0)
1580 {
1581 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1582 network->CountryIeLen = info_element->len;
1583
1584 if (!IS_COUNTRY_IE_VALID(ieee))
1585 {
1586 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1587 }
1588 }
1589
1590 //
1591 // 070305, rcnjko: I update country IE watch dog here because
1592 // some AP (e.g. Cisco 1242) don't include country IE in their
1593 // probe response frame.
1594 //
1595 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
1596 {
1597 UPDATE_CIE_WATCHDOG(ieee);
1598 }
1599 }
1600
1601 }
1602
1603 int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1604 struct ieee80211_info_element *info_element,
1605 u16 length,
1606 struct ieee80211_network *network,
1607 struct ieee80211_rx_stats *stats)
1608 {
1609 u8 i;
1610 short offset;
1611 u16 tmp_htcap_len=0;
1612 u16 tmp_htinfo_len=0;
1613 u16 ht_realtek_agg_len=0;
1614 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1615 // u16 broadcom_len = 0;
1616 #ifdef CONFIG_IEEE80211_DEBUG
1617 char rates_str[64];
1618 char *p;
1619 #endif
1620
1621 while (length >= sizeof(*info_element)) {
1622 if (sizeof(*info_element) + info_element->len > length) {
1623 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1624 "info_element->len + 2 > left : "
1625 "info_element->len+2=%zd left=%d, id=%d.\n",
1626 info_element->len +
1627 sizeof(*info_element),
1628 length, info_element->id);
1629 /* We stop processing but don't return an error here
1630 * because some misbehaviour APs break this rule. ie.
1631 * Orinoco AP1000. */
1632 break;
1633 }
1634
1635 switch (info_element->id) {
1636 case MFIE_TYPE_SSID:
1637 if (ieee80211_is_empty_essid(info_element->data,
1638 info_element->len)) {
1639 network->flags |= NETWORK_EMPTY_ESSID;
1640 break;
1641 }
1642
1643 network->ssid_len = min(info_element->len,
1644 (u8) IW_ESSID_MAX_SIZE);
1645 memcpy(network->ssid, info_element->data, network->ssid_len);
1646 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1647 memset(network->ssid + network->ssid_len, 0,
1648 IW_ESSID_MAX_SIZE - network->ssid_len);
1649
1650 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1651 network->ssid, network->ssid_len);
1652 break;
1653
1654 case MFIE_TYPE_RATES:
1655 #ifdef CONFIG_IEEE80211_DEBUG
1656 p = rates_str;
1657 #endif
1658 network->rates_len = min(info_element->len,
1659 MAX_RATES_LENGTH);
1660 for (i = 0; i < network->rates_len; i++) {
1661 network->rates[i] = info_element->data[i];
1662 #ifdef CONFIG_IEEE80211_DEBUG
1663 p += snprintf(p, sizeof(rates_str) -
1664 (p - rates_str), "%02X ",
1665 network->rates[i]);
1666 #endif
1667 if (ieee80211_is_ofdm_rate
1668 (info_element->data[i])) {
1669 network->flags |= NETWORK_HAS_OFDM;
1670 if (info_element->data[i] &
1671 IEEE80211_BASIC_RATE_MASK)
1672 network->flags &=
1673 ~NETWORK_HAS_CCK;
1674 }
1675 }
1676
1677 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1678 rates_str, network->rates_len);
1679 break;
1680
1681 case MFIE_TYPE_RATES_EX:
1682 #ifdef CONFIG_IEEE80211_DEBUG
1683 p = rates_str;
1684 #endif
1685 network->rates_ex_len = min(info_element->len,
1686 MAX_RATES_EX_LENGTH);
1687 for (i = 0; i < network->rates_ex_len; i++) {
1688 network->rates_ex[i] = info_element->data[i];
1689 #ifdef CONFIG_IEEE80211_DEBUG
1690 p += snprintf(p, sizeof(rates_str) -
1691 (p - rates_str), "%02X ",
1692 network->rates_ex[i]);
1693 #endif
1694 if (ieee80211_is_ofdm_rate
1695 (info_element->data[i])) {
1696 network->flags |= NETWORK_HAS_OFDM;
1697 if (info_element->data[i] &
1698 IEEE80211_BASIC_RATE_MASK)
1699 network->flags &=
1700 ~NETWORK_HAS_CCK;
1701 }
1702 }
1703
1704 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1705 rates_str, network->rates_ex_len);
1706 break;
1707
1708 case MFIE_TYPE_DS_SET:
1709 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1710 info_element->data[0]);
1711 network->channel = info_element->data[0];
1712 break;
1713
1714 case MFIE_TYPE_FH_SET:
1715 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1716 break;
1717
1718 case MFIE_TYPE_CF_SET:
1719 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1720 break;
1721
1722 case MFIE_TYPE_TIM:
1723 if(info_element->len < 4)
1724 break;
1725
1726 network->tim.tim_count = info_element->data[0];
1727 network->tim.tim_period = info_element->data[1];
1728
1729 network->dtim_period = info_element->data[1];
1730 if(ieee->state != IEEE80211_LINKED)
1731 break;
1732
1733 network->last_dtim_sta_time[0] = stats->mac_time[0];
1734 network->last_dtim_sta_time[1] = stats->mac_time[1];
1735
1736 network->dtim_data = IEEE80211_DTIM_VALID;
1737
1738 if(info_element->data[0] != 0)
1739 break;
1740
1741 if(info_element->data[2] & 1)
1742 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1743
1744 offset = (info_element->data[2] >> 1)*2;
1745
1746 if(ieee->assoc_id < 8*offset ||
1747 ieee->assoc_id > 8*(offset + info_element->len -3))
1748
1749 break;
1750
1751 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1752
1753 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1754 network->dtim_data |= IEEE80211_DTIM_UCAST;
1755
1756 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1757 break;
1758
1759 case MFIE_TYPE_ERP:
1760 network->erp_value = info_element->data[0];
1761 network->flags |= NETWORK_HAS_ERP_VALUE;
1762 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1763 network->erp_value);
1764 break;
1765 case MFIE_TYPE_IBSS_SET:
1766 network->atim_window = info_element->data[0];
1767 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1768 network->atim_window);
1769 break;
1770
1771 case MFIE_TYPE_CHALLENGE:
1772 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1773 break;
1774
1775 case MFIE_TYPE_GENERIC:
1776 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1777 info_element->len);
1778 if (!ieee80211_parse_qos_info_param_IE(info_element,
1779 network))
1780 break;
1781
1782 if (info_element->len >= 4 &&
1783 info_element->data[0] == 0x00 &&
1784 info_element->data[1] == 0x50 &&
1785 info_element->data[2] == 0xf2 &&
1786 info_element->data[3] == 0x01) {
1787 network->wpa_ie_len = min(info_element->len + 2,
1788 MAX_WPA_IE_LEN);
1789 memcpy(network->wpa_ie, info_element,
1790 network->wpa_ie_len);
1791 break;
1792 }
1793
1794 #ifdef THOMAS_TURBO
1795 if (info_element->len == 7 &&
1796 info_element->data[0] == 0x00 &&
1797 info_element->data[1] == 0xe0 &&
1798 info_element->data[2] == 0x4c &&
1799 info_element->data[3] == 0x01 &&
1800 info_element->data[4] == 0x02) {
1801 network->Turbo_Enable = 1;
1802 }
1803 #endif
1804
1805 //for HTcap and HTinfo parameters
1806 if(tmp_htcap_len == 0){
1807 if(info_element->len >= 4 &&
1808 info_element->data[0] == 0x00 &&
1809 info_element->data[1] == 0x90 &&
1810 info_element->data[2] == 0x4c &&
1811 info_element->data[3] == 0x033){
1812
1813 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1814 if(tmp_htcap_len != 0){
1815 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1816 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1817 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1818 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1819 }
1820 }
1821 if(tmp_htcap_len != 0)
1822 network->bssht.bdSupportHT = true;
1823 else
1824 network->bssht.bdSupportHT = false;
1825 }
1826
1827
1828 if(tmp_htinfo_len == 0){
1829 if(info_element->len >= 4 &&
1830 info_element->data[0] == 0x00 &&
1831 info_element->data[1] == 0x90 &&
1832 info_element->data[2] == 0x4c &&
1833 info_element->data[3] == 0x034){
1834
1835 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1836 if(tmp_htinfo_len != 0){
1837 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1838 if(tmp_htinfo_len){
1839 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1840 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1841 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1842 }
1843
1844 }
1845
1846 }
1847 }
1848
1849 if(ieee->aggregation){
1850 if(network->bssht.bdSupportHT){
1851 if(info_element->len >= 4 &&
1852 info_element->data[0] == 0x00 &&
1853 info_element->data[1] == 0xe0 &&
1854 info_element->data[2] == 0x4c &&
1855 info_element->data[3] == 0x02){
1856
1857 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1858 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1859
1860 }
1861 if(ht_realtek_agg_len >= 5){
1862 network->bssht.bdRT2RTAggregation = true;
1863
1864 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1865 network->bssht.bdRT2RTLongSlotTime = true;
1866 }
1867 }
1868
1869 }
1870
1871 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1872 {
1873 if ((info_element->len >= 3 &&
1874 info_element->data[0] == 0x00 &&
1875 info_element->data[1] == 0x05 &&
1876 info_element->data[2] == 0xb5) ||
1877 (info_element->len >= 3 &&
1878 info_element->data[0] == 0x00 &&
1879 info_element->data[1] == 0x0a &&
1880 info_element->data[2] == 0xf7) ||
1881 (info_element->len >= 3 &&
1882 info_element->data[0] == 0x00 &&
1883 info_element->data[1] == 0x10 &&
1884 info_element->data[2] == 0x18)){
1885
1886 network->broadcom_cap_exist = true;
1887
1888 }
1889 }
1890 if(info_element->len >= 3 &&
1891 info_element->data[0] == 0x00 &&
1892 info_element->data[1] == 0x0c &&
1893 info_element->data[2] == 0x43)
1894 {
1895 network->ralink_cap_exist = true;
1896 }
1897 else
1898 network->ralink_cap_exist = false;
1899 //added by amy for atheros AP
1900 if((info_element->len >= 3 &&
1901 info_element->data[0] == 0x00 &&
1902 info_element->data[1] == 0x03 &&
1903 info_element->data[2] == 0x7f) ||
1904 (info_element->len >= 3 &&
1905 info_element->data[0] == 0x00 &&
1906 info_element->data[1] == 0x13 &&
1907 info_element->data[2] == 0x74))
1908 {
1909 printk("========>%s(): athros AP is exist\n",__func__);
1910 network->atheros_cap_exist = true;
1911 }
1912 else
1913 network->atheros_cap_exist = false;
1914
1915 if(info_element->len >= 3 &&
1916 info_element->data[0] == 0x00 &&
1917 info_element->data[1] == 0x40 &&
1918 info_element->data[2] == 0x96)
1919 {
1920 network->cisco_cap_exist = true;
1921 }
1922 else
1923 network->cisco_cap_exist = false;
1924 //added by amy for LEAP of cisco
1925 if (info_element->len > 4 &&
1926 info_element->data[0] == 0x00 &&
1927 info_element->data[1] == 0x40 &&
1928 info_element->data[2] == 0x96 &&
1929 info_element->data[3] == 0x01)
1930 {
1931 if(info_element->len == 6)
1932 {
1933 memcpy(network->CcxRmState, &info_element[4], 2);
1934 if(network->CcxRmState[0] != 0)
1935 {
1936 network->bCcxRmEnable = true;
1937 }
1938 else
1939 network->bCcxRmEnable = false;
1940 //
1941 // CCXv4 Table 59-1 MBSSID Masks.
1942 //
1943 network->MBssidMask = network->CcxRmState[1] & 0x07;
1944 if(network->MBssidMask != 0)
1945 {
1946 network->bMBssidValid = true;
1947 network->MBssidMask = 0xff << (network->MBssidMask);
1948 cpMacAddr(network->MBssid, network->bssid);
1949 network->MBssid[5] &= network->MBssidMask;
1950 }
1951 else
1952 {
1953 network->bMBssidValid = false;
1954 }
1955 }
1956 else
1957 {
1958 network->bCcxRmEnable = false;
1959 }
1960 }
1961 if (info_element->len > 4 &&
1962 info_element->data[0] == 0x00 &&
1963 info_element->data[1] == 0x40 &&
1964 info_element->data[2] == 0x96 &&
1965 info_element->data[3] == 0x03)
1966 {
1967 if(info_element->len == 5)
1968 {
1969 network->bWithCcxVerNum = true;
1970 network->BssCcxVerNumber = info_element->data[4];
1971 }
1972 else
1973 {
1974 network->bWithCcxVerNum = false;
1975 network->BssCcxVerNumber = 0;
1976 }
1977 }
1978 break;
1979
1980 case MFIE_TYPE_RSN:
1981 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1982 info_element->len);
1983 network->rsn_ie_len = min(info_element->len + 2,
1984 MAX_WPA_IE_LEN);
1985 memcpy(network->rsn_ie, info_element,
1986 network->rsn_ie_len);
1987 break;
1988
1989 //HT related element.
1990 case MFIE_TYPE_HT_CAP:
1991 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1992 info_element->len);
1993 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1994 if(tmp_htcap_len != 0){
1995 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1996 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1997 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1998 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1999
2000 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2001 // windows driver will update WMM parameters each beacon received once connected
2002 // Linux driver is a bit different.
2003 network->bssht.bdSupportHT = true;
2004 }
2005 else
2006 network->bssht.bdSupportHT = false;
2007 break;
2008
2009
2010 case MFIE_TYPE_HT_INFO:
2011 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2012 info_element->len);
2013 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2014 if(tmp_htinfo_len){
2015 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2016 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2017 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2018 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2019 }
2020 break;
2021
2022 case MFIE_TYPE_AIRONET:
2023 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2024 info_element->len);
2025 if(info_element->len >IE_CISCO_FLAG_POSITION)
2026 {
2027 network->bWithAironetIE = true;
2028
2029 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2030 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2031 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2032 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2033 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2034 {
2035 network->bCkipSupported = true;
2036 }
2037 else
2038 {
2039 network->bCkipSupported = false;
2040 }
2041 }
2042 else
2043 {
2044 network->bWithAironetIE = false;
2045 network->bCkipSupported = false;
2046 }
2047 break;
2048 case MFIE_TYPE_QOS_PARAMETER:
2049 printk(KERN_ERR
2050 "QoS Error need to parse QOS_PARAMETER IE\n");
2051 break;
2052
2053 case MFIE_TYPE_COUNTRY:
2054 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2055 info_element->len);
2056 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2057 break;
2058 /* TODO */
2059 default:
2060 IEEE80211_DEBUG_MGMT
2061 ("Unsupported info element: %s (%d)\n",
2062 get_info_element_string(info_element->id),
2063 info_element->id);
2064 break;
2065 }
2066
2067 length -= sizeof(*info_element) + info_element->len;
2068 info_element =
2069 (struct ieee80211_info_element *)&info_element->
2070 data[info_element->len];
2071 }
2072
2073 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2074 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2075 {
2076 network->unknown_cap_exist = true;
2077 }
2078 else
2079 {
2080 network->unknown_cap_exist = false;
2081 }
2082 return 0;
2083 }
2084
2085 static inline u8 ieee80211_SignalStrengthTranslate(
2086 u8 CurrSS
2087 )
2088 {
2089 u8 RetSS;
2090
2091 // Step 1. Scale mapping.
2092 if(CurrSS >= 71 && CurrSS <= 100)
2093 {
2094 RetSS = 90 + ((CurrSS - 70) / 3);
2095 }
2096 else if(CurrSS >= 41 && CurrSS <= 70)
2097 {
2098 RetSS = 78 + ((CurrSS - 40) / 3);
2099 }
2100 else if(CurrSS >= 31 && CurrSS <= 40)
2101 {
2102 RetSS = 66 + (CurrSS - 30);
2103 }
2104 else if(CurrSS >= 21 && CurrSS <= 30)
2105 {
2106 RetSS = 54 + (CurrSS - 20);
2107 }
2108 else if(CurrSS >= 5 && CurrSS <= 20)
2109 {
2110 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2111 }
2112 else if(CurrSS == 4)
2113 {
2114 RetSS = 36;
2115 }
2116 else if(CurrSS == 3)
2117 {
2118 RetSS = 27;
2119 }
2120 else if(CurrSS == 2)
2121 {
2122 RetSS = 18;
2123 }
2124 else if(CurrSS == 1)
2125 {
2126 RetSS = 9;
2127 }
2128 else
2129 {
2130 RetSS = CurrSS;
2131 }
2132 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2133
2134 // Step 2. Smoothing.
2135
2136 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2137
2138 return RetSS;
2139 }
2140
2141 /* 0-100 index */
2142 static long ieee80211_translate_todbm(u8 signal_strength_index)
2143 {
2144 long signal_power; // in dBm.
2145
2146 // Translate to dBm (x=0.5y-95).
2147 signal_power = (long)((signal_strength_index + 1) >> 1);
2148 signal_power -= 95;
2149
2150 return signal_power;
2151 }
2152
2153 static inline int ieee80211_network_init(
2154 struct ieee80211_device *ieee,
2155 struct ieee80211_probe_response *beacon,
2156 struct ieee80211_network *network,
2157 struct ieee80211_rx_stats *stats)
2158 {
2159 #ifdef CONFIG_IEEE80211_DEBUG
2160 //char rates_str[64];
2161 //char *p;
2162 #endif
2163
2164 network->qos_data.active = 0;
2165 network->qos_data.supported = 0;
2166 network->qos_data.param_count = 0;
2167 network->qos_data.old_param_count = 0;
2168
2169 /* Pull out fixed field data */
2170 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2171 network->capability = le16_to_cpu(beacon->capability);
2172 network->last_scanned = jiffies;
2173 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2174 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2175 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
2176 /* Where to pull this? beacon->listen_interval;*/
2177 network->listen_interval = 0x0A;
2178 network->rates_len = network->rates_ex_len = 0;
2179 network->last_associate = 0;
2180 network->ssid_len = 0;
2181 network->flags = 0;
2182 network->atim_window = 0;
2183 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2184 0x3 : 0x0;
2185 network->berp_info_valid = false;
2186 network->broadcom_cap_exist = false;
2187 network->ralink_cap_exist = false;
2188 network->atheros_cap_exist = false;
2189 network->cisco_cap_exist = false;
2190 network->unknown_cap_exist = false;
2191 #ifdef THOMAS_TURBO
2192 network->Turbo_Enable = 0;
2193 #endif
2194 network->CountryIeLen = 0;
2195 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2196 //Initialize HT parameters
2197 //ieee80211_ht_initialize(&network->bssht);
2198 HTInitializeBssDesc(&network->bssht);
2199 if (stats->freq == IEEE80211_52GHZ_BAND) {
2200 /* for A band (No DS info) */
2201 network->channel = stats->received_channel;
2202 } else
2203 network->flags |= NETWORK_HAS_CCK;
2204
2205 network->wpa_ie_len = 0;
2206 network->rsn_ie_len = 0;
2207
2208 if (ieee80211_parse_info_param
2209 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2210 return 1;
2211
2212 network->mode = 0;
2213 if (stats->freq == IEEE80211_52GHZ_BAND)
2214 network->mode = IEEE_A;
2215 else {
2216 if (network->flags & NETWORK_HAS_OFDM)
2217 network->mode |= IEEE_G;
2218 if (network->flags & NETWORK_HAS_CCK)
2219 network->mode |= IEEE_B;
2220 }
2221
2222 if (network->mode == 0) {
2223 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2224 "network.\n",
2225 escape_essid(network->ssid,
2226 network->ssid_len),
2227 network->bssid);
2228 return 1;
2229 }
2230
2231 if(network->bssht.bdSupportHT){
2232 if(network->mode == IEEE_A)
2233 network->mode = IEEE_N_5G;
2234 else if(network->mode & (IEEE_G | IEEE_B))
2235 network->mode = IEEE_N_24G;
2236 }
2237 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2238 network->flags |= NETWORK_EMPTY_ESSID;
2239
2240 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2241 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2242 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
2243
2244 memcpy(&network->stats, stats, sizeof(network->stats));
2245
2246 return 0;
2247 }
2248
2249 static inline int is_same_network(struct ieee80211_network *src,
2250 struct ieee80211_network *dst, struct ieee80211_device *ieee)
2251 {
2252 /* A network is only a duplicate if the channel, BSSID, ESSID
2253 * and the capability field (in particular IBSS and BSS) all match.
2254 * We treat all <hidden> with the same BSSID and channel
2255 * as one network */
2256 return //((src->ssid_len == dst->ssid_len) &&
2257 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2258 (src->channel == dst->channel) &&
2259 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2260 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2261 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2262 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2263 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2264 ((src->capability & WLAN_CAPABILITY_BSS) ==
2265 (dst->capability & WLAN_CAPABILITY_BSS)));
2266 }
2267
2268 static inline void update_network(struct ieee80211_network *dst,
2269 struct ieee80211_network *src)
2270 {
2271 int qos_active;
2272 u8 old_param;
2273
2274 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2275 dst->capability = src->capability;
2276 memcpy(dst->rates, src->rates, src->rates_len);
2277 dst->rates_len = src->rates_len;
2278 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2279 dst->rates_ex_len = src->rates_ex_len;
2280 if (src->ssid_len > 0)
2281 {
2282 memset(dst->ssid, 0, dst->ssid_len);
2283 dst->ssid_len = src->ssid_len;
2284 memcpy(dst->ssid, src->ssid, src->ssid_len);
2285 }
2286 dst->mode = src->mode;
2287 dst->flags = src->flags;
2288 dst->time_stamp[0] = src->time_stamp[0];
2289 dst->time_stamp[1] = src->time_stamp[1];
2290 if (src->flags & NETWORK_HAS_ERP_VALUE)
2291 {
2292 dst->erp_value = src->erp_value;
2293 dst->berp_info_valid = src->berp_info_valid = true;
2294 }
2295 dst->beacon_interval = src->beacon_interval;
2296 dst->listen_interval = src->listen_interval;
2297 dst->atim_window = src->atim_window;
2298 dst->dtim_period = src->dtim_period;
2299 dst->dtim_data = src->dtim_data;
2300 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2301 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2302 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2303
2304 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2305 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2306 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2307 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2308 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2309 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2310 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2311 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2312 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2313 dst->ralink_cap_exist = src->ralink_cap_exist;
2314 dst->atheros_cap_exist = src->atheros_cap_exist;
2315 dst->cisco_cap_exist = src->cisco_cap_exist;
2316 dst->unknown_cap_exist = src->unknown_cap_exist;
2317 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2318 dst->wpa_ie_len = src->wpa_ie_len;
2319 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2320 dst->rsn_ie_len = src->rsn_ie_len;
2321
2322 dst->last_scanned = jiffies;
2323 /* qos related parameters */
2324 //qos_active = src->qos_data.active;
2325 qos_active = dst->qos_data.active;
2326 //old_param = dst->qos_data.old_param_count;
2327 old_param = dst->qos_data.param_count;
2328 if(dst->flags & NETWORK_HAS_QOS_MASK)
2329 memcpy(&dst->qos_data, &src->qos_data,
2330 sizeof(struct ieee80211_qos_data));
2331 else {
2332 dst->qos_data.supported = src->qos_data.supported;
2333 dst->qos_data.param_count = src->qos_data.param_count;
2334 }
2335
2336 if (dst->qos_data.supported == 1) {
2337 dst->QoS_Enable = 1;
2338 if(dst->ssid_len)
2339 IEEE80211_DEBUG_QOS
2340 ("QoS the network %s is QoS supported\n",
2341 dst->ssid);
2342 else
2343 IEEE80211_DEBUG_QOS
2344 ("QoS the network is QoS supported\n");
2345 }
2346 dst->qos_data.active = qos_active;
2347 dst->qos_data.old_param_count = old_param;
2348
2349 /* dst->last_associate is not overwritten */
2350 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2351 if (src->wmm_param[0].aci_aifsn|| \
2352 src->wmm_param[1].aci_aifsn|| \
2353 src->wmm_param[2].aci_aifsn|| \
2354 src->wmm_param[3].aci_aifsn) {
2355 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2356 }
2357 //dst->QoS_Enable = src->QoS_Enable;
2358 #ifdef THOMAS_TURBO
2359 dst->Turbo_Enable = src->Turbo_Enable;
2360 #endif
2361
2362 dst->CountryIeLen = src->CountryIeLen;
2363 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2364
2365 //added by amy for LEAP
2366 dst->bWithAironetIE = src->bWithAironetIE;
2367 dst->bCkipSupported = src->bCkipSupported;
2368 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2369 dst->bCcxRmEnable = src->bCcxRmEnable;
2370 dst->MBssidMask = src->MBssidMask;
2371 dst->bMBssidValid = src->bMBssidValid;
2372 memcpy(dst->MBssid, src->MBssid, 6);
2373 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2374 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2375
2376 }
2377
2378 static inline int is_beacon(__le16 fc)
2379 {
2380 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2381 }
2382
2383 static inline void ieee80211_process_probe_response(
2384 struct ieee80211_device *ieee,
2385 struct ieee80211_probe_response *beacon,
2386 struct ieee80211_rx_stats *stats)
2387 {
2388 struct ieee80211_network *network;
2389 struct ieee80211_network *target;
2390 struct ieee80211_network *oldest = NULL;
2391 #ifdef CONFIG_IEEE80211_DEBUG
2392 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2393 #endif
2394 int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl));
2395 unsigned long flags;
2396 short renew;
2397 u16 capability;
2398 //u8 wmm_info;
2399
2400 network = kzalloc(sizeof(*network), GFP_ATOMIC);
2401 if (!network)
2402 goto out;
2403
2404 capability = le16_to_cpu(beacon->capability);
2405 IEEE80211_DEBUG_SCAN(
2406 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2407 escape_essid(info_element->data, info_element->len),
2408 beacon->header.addr3,
2409 (capability & (1 << 0xf)) ? '1' : '0',
2410 (capability & (1 << 0xe)) ? '1' : '0',
2411 (capability & (1 << 0xd)) ? '1' : '0',
2412 (capability & (1 << 0xc)) ? '1' : '0',
2413 (capability & (1 << 0xb)) ? '1' : '0',
2414 (capability & (1 << 0xa)) ? '1' : '0',
2415 (capability & (1 << 0x9)) ? '1' : '0',
2416 (capability & (1 << 0x8)) ? '1' : '0',
2417 (capability & (1 << 0x7)) ? '1' : '0',
2418 (capability & (1 << 0x6)) ? '1' : '0',
2419 (capability & (1 << 0x5)) ? '1' : '0',
2420 (capability & (1 << 0x4)) ? '1' : '0',
2421 (capability & (1 << 0x3)) ? '1' : '0',
2422 (capability & (1 << 0x2)) ? '1' : '0',
2423 (capability & (1 << 0x1)) ? '1' : '0',
2424 (capability & (1 << 0x0)) ? '1' : '0');
2425
2426 if (ieee80211_network_init(ieee, beacon, network, stats)) {
2427 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2428 escape_essid(info_element->data,
2429 info_element->len),
2430 beacon->header.addr3,
2431 fc == IEEE80211_STYPE_PROBE_RESP ?
2432 "PROBE RESPONSE" : "BEACON");
2433 goto out;
2434 }
2435
2436 // For Asus EeePc request,
2437 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2438 // wireless adapter should follow the country code.
2439 // (2) If there is no any country code in beacon,
2440 // then wireless adapter should do active scan from ch1~11 and
2441 // passive scan from ch12~14
2442
2443 if (!IsLegalChannel(ieee, network->channel))
2444 goto out;
2445 if (ieee->bGlobalDomain)
2446 {
2447 if (fc == IEEE80211_STYPE_PROBE_RESP)
2448 {
2449 // Case 1: Country code
2450 if(IS_COUNTRY_IE_VALID(ieee) )
2451 {
2452 if (!IsLegalChannel(ieee, network->channel)) {
2453 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network->channel);
2454 goto out;
2455 }
2456 }
2457 // Case 2: No any country code.
2458 else
2459 {
2460 // Filter over channel ch12~14
2461 if (network->channel > 11)
2462 {
2463 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network->channel);
2464 goto out;
2465 }
2466 }
2467 }
2468 else
2469 {
2470 // Case 1: Country code
2471 if(IS_COUNTRY_IE_VALID(ieee) )
2472 {
2473 if (!IsLegalChannel(ieee, network->channel)) {
2474 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network->channel);
2475 goto out;
2476 }
2477 }
2478 // Case 2: No any country code.
2479 else
2480 {
2481 // Filter over channel ch12~14
2482 if (network->channel > 14)
2483 {
2484 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network->channel);
2485 goto out;
2486 }
2487 }
2488 }
2489 }
2490
2491 /* The network parsed correctly -- so now we scan our known networks
2492 * to see if we can find it in our list.
2493 *
2494 * NOTE: This search is definitely not optimized. Once its doing
2495 * the "right thing" we'll optimize it for efficiency if
2496 * necessary */
2497
2498 /* Search for this entry in the list and update it if it is
2499 * already there. */
2500
2501 spin_lock_irqsave(&ieee->lock, flags);
2502
2503 if (is_same_network(&ieee->current_network, network, ieee)) {
2504 update_network(&ieee->current_network, network);
2505 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2506 && ieee->current_network.berp_info_valid){
2507 if(ieee->current_network.erp_value& ERP_UseProtection)
2508 ieee->current_network.buseprotection = true;
2509 else
2510 ieee->current_network.buseprotection = false;
2511 }
2512 if(is_beacon(beacon->header.frame_ctl))
2513 {
2514 if(ieee->state == IEEE80211_LINKED)
2515 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2516 }
2517 else //hidden AP
2518 network->flags = (~NETWORK_EMPTY_ESSID & network->flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2519 }
2520
2521 list_for_each_entry(target, &ieee->network_list, list) {
2522 if (is_same_network(target, network, ieee))
2523 break;
2524 if ((oldest == NULL) ||
2525 (target->last_scanned < oldest->last_scanned))
2526 oldest = target;
2527 }
2528
2529 /* If we didn't find a match, then get a new network slot to initialize
2530 * with this beacon's information */
2531 if (&target->list == &ieee->network_list) {
2532 if (list_empty(&ieee->network_free_list)) {
2533 /* If there are no more slots, expire the oldest */
2534 list_del(&oldest->list);
2535 target = oldest;
2536 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2537 "network list.\n",
2538 escape_essid(target->ssid,
2539 target->ssid_len),
2540 target->bssid);
2541 } else {
2542 /* Otherwise just pull from the free list */
2543 target = list_entry(ieee->network_free_list.next,
2544 struct ieee80211_network, list);
2545 list_del(ieee->network_free_list.next);
2546 }
2547
2548
2549 #ifdef CONFIG_IEEE80211_DEBUG
2550 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2551 escape_essid(network->ssid,
2552 network->ssid_len),
2553 network->bssid,
2554 fc == IEEE80211_STYPE_PROBE_RESP ?
2555 "PROBE RESPONSE" : "BEACON");
2556 #endif
2557 memcpy(target, network, sizeof(*target));
2558 list_add_tail(&target->list, &ieee->network_list);
2559 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2560 ieee80211_softmac_new_net(ieee,network);
2561 } else {
2562 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2563 escape_essid(target->ssid,
2564 target->ssid_len),
2565 target->bssid,
2566 fc == 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 out:
2599 kfree(network);
2600 }
2601
2602 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2603 struct rtl_80211_hdr_4addr *header,
2604 struct ieee80211_rx_stats *stats)
2605 {
2606 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
2607
2608 case IEEE80211_STYPE_BEACON:
2609 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2610 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2611 IEEE80211_DEBUG_SCAN("Beacon\n");
2612 ieee80211_process_probe_response(
2613 ieee, (struct ieee80211_probe_response *)header, stats);
2614 break;
2615
2616 case IEEE80211_STYPE_PROBE_RESP:
2617 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2618 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2619 IEEE80211_DEBUG_SCAN("Probe response\n");
2620 ieee80211_process_probe_response(
2621 ieee, (struct ieee80211_probe_response *)header, stats);
2622 break;
2623
2624 }
2625 }
2626 EXPORT_SYMBOL(ieee80211_rx_mgt);
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