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Fix common misspellings
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / rtl8192u / ieee80211 / ieee80211_rx.c
CommitLineData
8fc8598e
JC		 1/*
2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
4 *
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
6 * <jkmaline@cc.hut.fi>
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
13 * more details.
14 ******************************************************************************
15
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
18
19 A special thanks goes to Realtek for their support !
20
21******************************************************************************/
22
23
24#include <linux/compiler.h>
25//#include <linux/config.h>
26#include <linux/errno.h>
27#include <linux/if_arp.h>
28#include <linux/in6.h>
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/netdevice.h>
34#include <linux/pci.h>
35#include <linux/proc_fs.h>
36#include <linux/skbuff.h>
37#include <linux/slab.h>
38#include <linux/tcp.h>
39#include <linux/types.h>
40#include <linux/version.h>
41#include <linux/wireless.h>
42#include <linux/etherdevice.h>
43#include <asm/uaccess.h>
44#include <linux/ctype.h>
45
46#include "ieee80211.h"
8fc8598e 47#include "dot11d.h"
8fc8598e
JC		 48static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
49 struct sk_buff *skb,
50 struct ieee80211_rx_stats *rx_stats)
51{
52 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data;
53 u16 fc = le16_to_cpu(hdr->frame_ctl);
54
55 skb->dev = ieee->dev;
8fc8598e 56 skb_reset_mac_header(skb);
8fc8598e
JC		 57
58 skb_pull(skb, ieee80211_get_hdrlen(fc));
59 skb->pkt_type = PACKET_OTHERHOST;
60 skb->protocol = __constant_htons(ETH_P_80211_RAW);
61 memset(skb->cb, 0, sizeof(skb->cb));
62 netif_rx(skb);
63}
64
65
66/* Called only as a tasklet (software IRQ) */
67static struct ieee80211_frag_entry *
68ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
69 unsigned int frag, u8 tid,u8 *src, u8 *dst)
70{
71 struct ieee80211_frag_entry *entry;
72 int i;
73
74 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
75 entry = &ieee->frag_cache[tid][i];
76 if (entry->skb != NULL &&
77 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
78 IEEE80211_DEBUG_FRAG(
79 "expiring fragment cache entry "
80 "seq=%u last_frag=%u\n",
81 entry->seq, entry->last_frag);
82 dev_kfree_skb_any(entry->skb);
83 entry->skb = NULL;
84 }
85
86 if (entry->skb != NULL && entry->seq == seq &&
87 (entry->last_frag + 1 == frag || frag == -1) &&
88 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
89 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
90 return entry;
91 }
92
93 return NULL;
94}
95
96/* Called only as a tasklet (software IRQ) */
97static struct sk_buff *
98ieee80211_frag_cache_get(struct ieee80211_device *ieee,
99 struct ieee80211_hdr_4addr *hdr)
100{
101 struct sk_buff *skb = NULL;
102 u16 fc = le16_to_cpu(hdr->frame_ctl);
103 u16 sc = le16_to_cpu(hdr->seq_ctl);
104 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
105 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
106 struct ieee80211_frag_entry *entry;
107 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
108 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
109 u8 tid;
110
111 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
112 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
113 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
114 tid = UP2AC(tid);
115 tid ++;
116 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
117 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
118 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
119 tid = UP2AC(tid);
120 tid ++;
121 } else {
122 tid = 0;
123 }
124
125 if (frag == 0) {
126 /* Reserve enough space to fit maximum frame length */
127 skb = dev_alloc_skb(ieee->dev->mtu +
128 sizeof(struct ieee80211_hdr_4addr) +
129 8 /* LLC */ +
130 2 /* alignment */ +
131 8 /* WEP */ +
132 ETH_ALEN /* WDS */ +
133 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
134 if (skb == NULL)
135 return NULL;
136
137 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
138 ieee->frag_next_idx[tid]++;
139 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
140 ieee->frag_next_idx[tid] = 0;
141
142 if (entry->skb != NULL)
143 dev_kfree_skb_any(entry->skb);
144
145 entry->first_frag_time = jiffies;
146 entry->seq = seq;
147 entry->last_frag = frag;
148 entry->skb = skb;
149 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
150 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
151 } else {
152 /* received a fragment of a frame for which the head fragment
153 * should have already been received */
154 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
155 hdr->addr1);
156 if (entry != NULL) {
157 entry->last_frag = frag;
158 skb = entry->skb;
159 }
160 }
161
162 return skb;
163}
164
165
166/* Called only as a tasklet (software IRQ) */
167static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
168 struct ieee80211_hdr_4addr *hdr)
169{
170 u16 fc = le16_to_cpu(hdr->frame_ctl);
171 u16 sc = le16_to_cpu(hdr->seq_ctl);
172 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
173 struct ieee80211_frag_entry *entry;
174 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
175 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
176 u8 tid;
177
178 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
179 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr;
180 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
181 tid = UP2AC(tid);
182 tid ++;
183 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
184 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr;
185 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
186 tid = UP2AC(tid);
187 tid ++;
188 } else {
189 tid = 0;
190 }
191
192 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
193 hdr->addr1);
194
195 if (entry == NULL) {
196 IEEE80211_DEBUG_FRAG(
197 "could not invalidate fragment cache "
198 "entry (seq=%u)\n", seq);
199 return -1;
200 }
201
202 entry->skb = NULL;
203 return 0;
204}
205
206
207
208/* ieee80211_rx_frame_mgtmt
209 *
210 * Responsible for handling management control frames
211 *
212 * Called by ieee80211_rx */
213static inline int
214ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
215 struct ieee80211_rx_stats *rx_stats, u16 type,
216 u16 stype)
217{
218 /* On the struct stats definition there is written that
219 * this is not mandatory.... but seems that the probe
220 * response parser uses it
221 */
222 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data;
223
224 rx_stats->len = skb->len;
225 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats);
226 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN)))
227 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames
228 {
229 dev_kfree_skb_any(skb);
230 return 0;
231 }
232
233 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
234
235 dev_kfree_skb_any(skb);
236
237 return 0;
238
239 #ifdef NOT_YET
240 if (ieee->iw_mode == IW_MODE_MASTER) {
241 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
242 ieee->dev->name);
243 return 0;
244/*
245 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
246 skb->data);*/
247 }
248
249 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
250 if (stype == WLAN_FC_STYPE_BEACON &&
251 ieee->iw_mode == IW_MODE_MASTER) {
252 struct sk_buff *skb2;
253 /* Process beacon frames also in kernel driver to
254 * update STA(AP) table statistics */
255 skb2 = skb_clone(skb, GFP_ATOMIC);
256 if (skb2)
257 hostap_rx(skb2->dev, skb2, rx_stats);
258 }
259
260 /* send management frames to the user space daemon for
261 * processing */
262 ieee->apdevstats.rx_packets++;
263 ieee->apdevstats.rx_bytes += skb->len;
264 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
265 return 0;
266 }
267
268 if (ieee->iw_mode == IW_MODE_MASTER) {
269 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
270 printk(KERN_DEBUG "%s: unknown management frame "
271 "(type=0x%02x, stype=0x%02x) dropped\n",
272 skb->dev->name, type, stype);
273 return -1;
274 }
275
276 hostap_rx(skb->dev, skb, rx_stats);
277 return 0;
278 }
279
280 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
281 "received in non-Host AP mode\n", skb->dev->name);
282 return -1;
283 #endif
284}
285
286
287
288/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
289/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
290static unsigned char rfc1042_header[] =
291{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
292/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
293static unsigned char bridge_tunnel_header[] =
294{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
295/* No encapsulation header if EtherType < 0x600 (=length) */
296
297/* Called by ieee80211_rx_frame_decrypt */
298static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
299 struct sk_buff *skb, size_t hdrlen)
300{
301 struct net_device *dev = ieee->dev;
302 u16 fc, ethertype;
303 struct ieee80211_hdr_4addr *hdr;
304 u8 *pos;
305
306 if (skb->len < 24)
307 return 0;
308
309 hdr = (struct ieee80211_hdr_4addr *) skb->data;
310 fc = le16_to_cpu(hdr->frame_ctl);
311
312 /* check that the frame is unicast frame to us */
313 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
314 IEEE80211_FCTL_TODS &&
315 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
316 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
317 /* ToDS frame with own addr BSSID and DA */
318 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
319 IEEE80211_FCTL_FROMDS &&
320 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
321 /* FromDS frame with own addr as DA */
322 } else
323 return 0;
324
325 if (skb->len < 24 + 8)
326 return 0;
327
328 /* check for port access entity Ethernet type */
329// pos = skb->data + 24;
330 pos = skb->data + hdrlen;
331 ethertype = (pos[6] << 8) | pos[7];
332 if (ethertype == ETH_P_PAE)
333 return 1;
334
335 return 0;
336}
337
338/* Called only as a tasklet (software IRQ), by ieee80211_rx */
339static inline int
340ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
341 struct ieee80211_crypt_data *crypt)
342{
343 struct ieee80211_hdr_4addr *hdr;
344 int res, hdrlen;
345
346 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
347 return 0;
8fc8598e
JC		 348 if (ieee->hwsec_active)
349 {
350 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
351 tcb_desc->bHwSec = 1;
352 }
8fc8598e
JC		 353 hdr = (struct ieee80211_hdr_4addr *) skb->data;
354 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
355
356#ifdef CONFIG_IEEE80211_CRYPT_TKIP
357 if (ieee->tkip_countermeasures &&
358 strcmp(crypt->ops->name, "TKIP") == 0) {
359 if (net_ratelimit()) {
360 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
0ee9f67c
JP		 361 "received packet from %pM\n",
362 ieee->dev->name, hdr->addr2);
8fc8598e
JC		 363 }
364 return -1;
365 }
366#endif
367
368 atomic_inc(&crypt->refcnt);
369 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
370 atomic_dec(&crypt->refcnt);
371 if (res < 0) {
372 IEEE80211_DEBUG_DROP(
0ee9f67c
JP		 373 "decryption failed (SA=%pM"
374 ") res=%d\n", hdr->addr2, res);
8fc8598e
JC		 375 if (res == -2)
376 IEEE80211_DEBUG_DROP("Decryption failed ICV "
377 "mismatch (key %d)\n",
378 skb->data[hdrlen + 3] >> 6);
379 ieee->ieee_stats.rx_discards_undecryptable++;
380 return -1;
381 }
382
383 return res;
384}
385
386
387/* Called only as a tasklet (software IRQ), by ieee80211_rx */
388static inline int
389ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
390 int keyidx, struct ieee80211_crypt_data *crypt)
391{
392 struct ieee80211_hdr_4addr *hdr;
393 int res, hdrlen;
394
395 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
396 return 0;
397 if (ieee->hwsec_active)
398 {
399 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
400 tcb_desc->bHwSec = 1;
401 }
402
403 hdr = (struct ieee80211_hdr_4addr *) skb->data;
404 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
405
406 atomic_inc(&crypt->refcnt);
407 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
408 atomic_dec(&crypt->refcnt);
409 if (res < 0) {
410 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
0ee9f67c
JP		 411 " (SA=%pM keyidx=%d)\n",
412 ieee->dev->name, hdr->addr2, keyidx);
8fc8598e
JC		 413 return -1;
414 }
415
416 return 0;
417}
418
419
420/* this function is stolen from ipw2200 driver*/
421#define IEEE_PACKET_RETRY_TIME (5*HZ)
422static int is_duplicate_packet(struct ieee80211_device *ieee,
423 struct ieee80211_hdr_4addr *header)
424{
425 u16 fc = le16_to_cpu(header->frame_ctl);
426 u16 sc = le16_to_cpu(header->seq_ctl);
427 u16 seq = WLAN_GET_SEQ_SEQ(sc);
428 u16 frag = WLAN_GET_SEQ_FRAG(sc);
429 u16 *last_seq, *last_frag;
430 unsigned long *last_time;
431 struct ieee80211_hdr_3addrqos *hdr_3addrqos;
432 struct ieee80211_hdr_4addrqos *hdr_4addrqos;
433 u8 tid;
434
435
436 //TO2DS and QoS
437 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
438 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header;
439 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
440 tid = UP2AC(tid);
441 tid ++;
442 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
443 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header;
444 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
445 tid = UP2AC(tid);
446 tid ++;
447 } else { // no QoS
448 tid = 0;
449 }
450
451 switch (ieee->iw_mode) {
452 case IW_MODE_ADHOC:
453 {
454 struct list_head *p;
455 struct ieee_ibss_seq *entry = NULL;
456 u8 *mac = header->addr2;
457 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
458 //for (pos = (head)->next; pos != (head); pos = pos->next)
459 //__list_for_each(p, &ieee->ibss_mac_hash[index]) {
460 list_for_each(p, &ieee->ibss_mac_hash[index]) {
461 entry = list_entry(p, struct ieee_ibss_seq, list);
462 if (!memcmp(entry->mac, mac, ETH_ALEN))
463 break;
464 }
465 // if (memcmp(entry->mac, mac, ETH_ALEN)){
466 if (p == &ieee->ibss_mac_hash[index]) {
467 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
468 if (!entry) {
469 printk(KERN_WARNING "Cannot malloc new mac entry\n");
470 return 0;
471 }
472 memcpy(entry->mac, mac, ETH_ALEN);
473 entry->seq_num[tid] = seq;
474 entry->frag_num[tid] = frag;
475 entry->packet_time[tid] = jiffies;
476 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
477 return 0;
478 }
479 last_seq = &entry->seq_num[tid];
480 last_frag = &entry->frag_num[tid];
481 last_time = &entry->packet_time[tid];
482 break;
483 }
484
485 case IW_MODE_INFRA:
486 last_seq = &ieee->last_rxseq_num[tid];
487 last_frag = &ieee->last_rxfrag_num[tid];
488 last_time = &ieee->last_packet_time[tid];
489
490 break;
491 default:
492 return 0;
493 }
494
495// if(tid != 0) {
496// printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
497// }
498 if ((*last_seq == seq) &&
499 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
500 if (*last_frag == frag){
501 //printk(KERN_WARNING "[1] go drop!\n");
502 goto drop;
503
504 }
505 if (*last_frag + 1 != frag)
506 /* out-of-order fragment */
507 //printk(KERN_WARNING "[2] go drop!\n");
508 goto drop;
509 } else
510 *last_seq = seq;
511
512 *last_frag = frag;
513 *last_time = jiffies;
514 return 0;
515
516drop:
517// BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
518// printk("DUP\n");
519
520 return 1;
521}
522bool
523AddReorderEntry(
524 PRX_TS_RECORD pTS,
525 PRX_REORDER_ENTRY pReorderEntry
526 )
527{
528 struct list_head *pList = &pTS->RxPendingPktList;
8fc8598e
JC		 529 while(pList->next != &pTS->RxPendingPktList)
530 {
531 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
532 {
533 pList = pList->next;
534 }
535 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) )
536 {
537 return false;
538 }
539 else
540 {
541 break;
542 }
543 }
8fc8598e
JC		 544 pReorderEntry->List.next = pList->next;
545 pReorderEntry->List.next->prev = &pReorderEntry->List;
546 pReorderEntry->List.prev = pList;
547 pList->next = &pReorderEntry->List;
548
549 return true;
550}
551
552void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index)
553{
554 u8 i = 0 , j=0;
555 u16 ethertype;
556// if(index > 1)
557// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index);
558 for(j = 0; j<index; j++)
559 {
560//added by amy for reorder
561 struct ieee80211_rxb* prxb = prxbIndicateArray[j];
562 for(i = 0; i<prxb->nr_subframes; i++) {
563 struct sk_buff *sub_skb = prxb->subframes[i];
564
565 /* convert hdr + possible LLC headers into Ethernet header */
566 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
567 if (sub_skb->len >= 8 &&
568 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
569 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
570 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
571 /* remove RFC1042 or Bridge-Tunnel encapsulation and
572 * replace EtherType */
573 skb_pull(sub_skb, SNAP_SIZE);
574 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
575 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
576 } else {
577 u16 len;
578 /* Leave Ethernet header part of hdr and full payload */
579 len = htons(sub_skb->len);
580 memcpy(skb_push(sub_skb, 2), &len, 2);
581 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
582 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
583 }
584 //stats->rx_packets++;
585 //stats->rx_bytes += sub_skb->len;
586
587 /* Indicat the packets to upper layer */
588 if (sub_skb) {
589 //printk("0skb_len(%d)\n", skb->len);
590 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
591 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
592 sub_skb->dev = ieee->dev;
593 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
594 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
595 ieee->last_rx_ps_time = jiffies;
596 //printk("1skb_len(%d)\n", skb->len);
597 netif_rx(sub_skb);
598 }
599 }
600 kfree(prxb);
601 prxb = NULL;
602 }
603}
604
605
606void RxReorderIndicatePacket( struct ieee80211_device *ieee,
607 struct ieee80211_rxb* prxb,
608 PRX_TS_RECORD pTS,
609 u16 SeqNum)
610{
611 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
612 PRX_REORDER_ENTRY pReorderEntry = NULL;
613 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
614 u8 WinSize = pHTInfo->RxReorderWinSize;
615 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
616 u8 index = 0;
617 bool bMatchWinStart = false, bPktInBuf = false;
618 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize);
8fc8598e
JC		 619 /* Rx Reorder initialize condition.*/
620 if(pTS->RxIndicateSeq == 0xffff) {
621 pTS->RxIndicateSeq = SeqNum;
622 }
623
624 /* Drop out the packet which SeqNum is smaller than WinStart */
625 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
626 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
627 pTS->RxIndicateSeq, SeqNum);
628 pHTInfo->RxReorderDropCounter++;
629 {
630 int i;
631 for(i =0; i < prxb->nr_subframes; i++) {
632 dev_kfree_skb(prxb->subframes[i]);
633 }
634 kfree(prxb);
635 prxb = NULL;
636 }
637 return;
638 }
639
640 /*
641 * Sliding window manipulation. Conditions includes:
642 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
643 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
644 */
645 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
646 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
647 bMatchWinStart = true;
648 } else if(SN_LESS(WinEnd, SeqNum)) {
649 if(SeqNum >= (WinSize - 1)) {
650 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
651 } else {
652 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
653 }
654 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
655 }
656
657 /*
658 * Indication process.
659 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
660 * with the SeqNum smaller than latest WinStart and buffer other packets.
661 */
662 /* For Rx Reorder condition:
663 * 1. All packets with SeqNum smaller than WinStart => Indicate
664 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
665 */
666 if(bMatchWinStart) {
667 /* Current packet is going to be indicated.*/
668 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
669 pTS->RxIndicateSeq, SeqNum);
670 prxbIndicateArray[0] = prxb;
671// printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum);
672 index = 1;
673 } else {
674 /* Current packet is going to be inserted into pending list.*/
675 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__);
676 if(!list_empty(&ieee->RxReorder_Unused_List)) {
677 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
678 list_del_init(&pReorderEntry->List);
679
680 /* Make a reorder entry and insert into a the packet list.*/
681 pReorderEntry->SeqNum = SeqNum;
682 pReorderEntry->prxb = prxb;
683 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
684
8fc8598e
JC		 685 if(!AddReorderEntry(pTS, pReorderEntry)) {
686 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
687 __FUNCTION__, pTS->RxIndicateSeq, SeqNum);
688 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
689 {
690 int i;
691 for(i =0; i < prxb->nr_subframes; i++) {
692 dev_kfree_skb(prxb->subframes[i]);
693 }
694 kfree(prxb);
695 prxb = NULL;
696 }
697 } else {
698 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
699 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
700 }
8fc8598e
JC		 701 }
702 else {
703 /*
704 * Packets are dropped if there is not enough reorder entries.
705 * This part shall be modified!! We can just indicate all the
706 * packets in buffer and get reorder entries.
707 */
708 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
709 {
710 int i;
711 for(i =0; i < prxb->nr_subframes; i++) {
712 dev_kfree_skb(prxb->subframes[i]);
713 }
714 kfree(prxb);
715 prxb = NULL;
716 }
717 }
718 }
719
720 /* Check if there is any packet need indicate.*/
721 while(!list_empty(&pTS->RxPendingPktList)) {
722 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__);
8fc8598e
JC		 723 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
724 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
725 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
726 {
727 /* This protect buffer from overflow. */
728 if(index >= REORDER_WIN_SIZE) {
729 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
730 bPktInBuf = true;
731 break;
732 }
733
734 list_del_init(&pReorderEntry->List);
735
736 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
737 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
738
739 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
740 prxbIndicateArray[index] = pReorderEntry->prxb;
741 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
742 index++;
743
744 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
745 } else {
746 bPktInBuf = true;
747 break;
748 }
8fc8598e
JC		 749 }
750
751 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
752 if(index>0) {
753 // Cancel previous pending timer.
754 // del_timer_sync(&pTS->RxPktPendingTimer);
755 pTS->RxTimeoutIndicateSeq = 0xffff;
756
757 // Indicate packets
758 if(index>REORDER_WIN_SIZE){
759 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
760 return;
761 }
762 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
763 }
764
8fc8598e
JC		 765 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
766 // Set new pending timer.
767 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__);
768 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
769 if(timer_pending(&pTS->RxPktPendingTimer))
770 del_timer_sync(&pTS->RxPktPendingTimer);
771 pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime);
772 add_timer(&pTS->RxPktPendingTimer);
773 }
8fc8598e
JC		 774}
775
776u8 parse_subframe(struct sk_buff *skb,
777 struct ieee80211_rx_stats *rx_stats,
778 struct ieee80211_rxb *rxb,u8* src,u8* dst)
779{
780 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data;
781 u16 fc = le16_to_cpu(hdr->frame_ctl);
782
783 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr);
784 u16 ChkLength;
785 bool bIsAggregateFrame = false;
786 u16 nSubframe_Length;
787 u8 nPadding_Length = 0;
788 u16 SeqNum=0;
789
790 struct sk_buff *sub_skb;
791 u8 *data_ptr;
792 /* just for debug purpose */
793 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
794
795 if((IEEE80211_QOS_HAS_SEQ(fc))&&\
796 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
797 bIsAggregateFrame = true;
798 }
799
800 if(IEEE80211_QOS_HAS_SEQ(fc)) {
801 LLCOffset += 2;
802 }
803
804 if(rx_stats->bContainHTC) {
805 LLCOffset += sHTCLng;
806 }
807 //printk("ChkLength = %d\n", LLCOffset);
808 // Null packet, don't indicate it to upper layer
809 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
810
811 if( skb->len <= ChkLength ) {
812 return 0;
813 }
814
815 skb_pull(skb, LLCOffset);
816
817 if(!bIsAggregateFrame) {
818 rxb->nr_subframes = 1;
819#ifdef JOHN_NOCPY
820 rxb->subframes[0] = skb;
821#else
822 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
823#endif
824
825 memcpy(rxb->src,src,ETH_ALEN);
826 memcpy(rxb->dst,dst,ETH_ALEN);
827 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
828 return 1;
829 } else {
830 rxb->nr_subframes = 0;
831 memcpy(rxb->src,src,ETH_ALEN);
832 memcpy(rxb->dst,dst,ETH_ALEN);
833 while(skb->len > ETHERNET_HEADER_SIZE) {
834 /* Offset 12 denote 2 mac address */
835 nSubframe_Length = *((u16*)(skb->data + 12));
836 //==m==>change the length order
837 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
838
839 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
8fc8598e
JC		 840 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
841 __FUNCTION__,rxb->nr_subframes);
842 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length);
843 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
844 printk("The Packet SeqNum is %d\n",SeqNum);
845 return 0;
846 }
847
848 /* move the data point to data content */
849 skb_pull(skb, ETHERNET_HEADER_SIZE);
850
851#ifdef JOHN_NOCPY
852 sub_skb = skb_clone(skb, GFP_ATOMIC);
853 sub_skb->len = nSubframe_Length;
854 sub_skb->tail = sub_skb->data + nSubframe_Length;
855#else
856 /* Allocate new skb for releasing to upper layer */
857 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
858 skb_reserve(sub_skb, 12);
859 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
860 memcpy(data_ptr,skb->data,nSubframe_Length);
861#endif
862 rxb->subframes[rxb->nr_subframes++] = sub_skb;
863 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
864 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
865 break;
866 }
867 skb_pull(skb,nSubframe_Length);
868
869 if(skb->len != 0) {
870 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
871 if(nPadding_Length == 4) {
872 nPadding_Length = 0;
873 }
874
875 if(skb->len < nPadding_Length) {
876 return 0;
877 }
878
879 skb_pull(skb,nPadding_Length);
880 }
881 }
882#ifdef JOHN_NOCPY
883 dev_kfree_skb(skb);
884#endif
885 //{just for debug added by david
886 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
887 //}
888 return rxb->nr_subframes;
889 }
890}
891
892/* All received frames are sent to this function. @skb contains the frame in
893 * IEEE 802.11 format, i.e., in the format it was sent over air.
894 * This function is called only as a tasklet (software IRQ). */
895int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
896 struct ieee80211_rx_stats *rx_stats)
897{
898 struct net_device *dev = ieee->dev;
899 struct ieee80211_hdr_4addr *hdr;
900 //struct ieee80211_hdr_3addrqos *hdr;
901
902 size_t hdrlen;
903 u16 fc, type, stype, sc;
904 struct net_device_stats *stats;
905 unsigned int frag;
906 u8 *payload;
907 u16 ethertype;
908 //added by amy for reorder
909 u8 TID = 0;
910 u16 SeqNum = 0;
911 PRX_TS_RECORD pTS = NULL;
912 //bool bIsAggregateFrame = false;
913 //added by amy for reorder
914#ifdef NOT_YET
915 struct net_device *wds = NULL;
916 struct sk_buff *skb2 = NULL;
917 struct net_device *wds = NULL;
918 int frame_authorized = 0;
919 int from_assoc_ap = 0;
920 void *sta = NULL;
921#endif
922// u16 qos_ctl = 0;
923 u8 dst[ETH_ALEN];
924 u8 src[ETH_ALEN];
925 u8 bssid[ETH_ALEN];
926 struct ieee80211_crypt_data *crypt = NULL;
927 int keyidx = 0;
928
929 int i;
930 struct ieee80211_rxb* rxb = NULL;
931 // cheat the the hdr type
932 hdr = (struct ieee80211_hdr_4addr *)skb->data;
933 stats = &ieee->stats;
934
935 if (skb->len < 10) {
936 printk(KERN_INFO "%s: SKB length < 10\n",
937 dev->name);
938 goto rx_dropped;
939 }
940
941 fc = le16_to_cpu(hdr->frame_ctl);
942 type = WLAN_FC_GET_TYPE(fc);
943 stype = WLAN_FC_GET_STYPE(fc);
944 sc = le16_to_cpu(hdr->seq_ctl);
945
946 frag = WLAN_GET_SEQ_FRAG(sc);
947 hdrlen = ieee80211_get_hdrlen(fc);
948
949 if(HTCCheck(ieee, skb->data))
950 {
951 if(net_ratelimit())
952 printk("find HTCControl\n");
953 hdrlen += 4;
954 rx_stats->bContainHTC = 1;
955 }
956
957 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
958#ifdef NOT_YET
959#if WIRELESS_EXT > 15
960 /* Put this code here so that we avoid duplicating it in all
961 * Rx paths. - Jean II */
962#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
963 /* If spy monitoring on */
964 if (iface->spy_data.spy_number > 0) {
965 struct iw_quality wstats;
966 wstats.level = rx_stats->rssi;
967 wstats.noise = rx_stats->noise;
968 wstats.updated = 6; /* No qual value */
969 /* Update spy records */
970 wireless_spy_update(dev, hdr->addr2, &wstats);
971 }
972#endif /* IW_WIRELESS_SPY */
973#endif /* WIRELESS_EXT > 15 */
974 hostap_update_rx_stats(local->ap, hdr, rx_stats);
975#endif
976
977#if WIRELESS_EXT > 15
978 if (ieee->iw_mode == IW_MODE_MONITOR) {
979 ieee80211_monitor_rx(ieee, skb, rx_stats);
980 stats->rx_packets++;
981 stats->rx_bytes += skb->len;
982 return 1;
983 }
984#endif
985 if (ieee->host_decrypt) {
986 int idx = 0;
987 if (skb->len >= hdrlen + 3)
988 idx = skb->data[hdrlen + 3] >> 6;
989 crypt = ieee->crypt[idx];
990#ifdef NOT_YET
991 sta = NULL;
992
993 /* Use station specific key to override default keys if the
994 * receiver address is a unicast address ("individual RA"). If
995 * bcrx_sta_key parameter is set, station specific key is used
996 * even with broad/multicast targets (this is against IEEE
997 * 802.11, but makes it easier to use different keys with
998 * stations that do not support WEP key mapping). */
999
1000 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
1001 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
1002 &sta);
1003#endif
1004
1005 /* allow NULL decrypt to indicate an station specific override
1006 * for default encryption */
1007 if (crypt && (crypt->ops == NULL ||
1008 crypt->ops->decrypt_mpdu == NULL))
1009 crypt = NULL;
1010
1011 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
1012 /* This seems to be triggered by some (multicast?)
1013 * frames from other than current BSS, so just drop the
1014 * frames silently instead of filling system log with
1015 * these reports. */
1016 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
0ee9f67c
JP		 1017 " (SA=%pM)\n",
1018 hdr->addr2);
8fc8598e
JC		 1019 ieee->ieee_stats.rx_discards_undecryptable++;
1020 goto rx_dropped;
1021 }
1022 }
1023
1024 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1025 goto rx_dropped;
1026
1027 // if QoS enabled, should check the sequence for each of the AC
1028 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){
1029 if (is_duplicate_packet(ieee, hdr))
1030 goto rx_dropped;
1031
1032 }
1033 else
1034 {
1035 PRX_TS_RECORD pRxTS = NULL;
8fc8598e 1036 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid);
8fc8598e
JC		 1037 if(GetTs(
1038 ieee,
1039 (PTS_COMMON_INFO*) &pRxTS,
1040 hdr->addr2,
1041 (u8)Frame_QoSTID((u8*)(skb->data)),
1042 RX_DIR,
1043 true))
1044 {
1045
1046 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc));
1047 if( (fc & (1<<11)) &&
1048 (frag == pRxTS->RxLastFragNum) &&
1049 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) )
1050 {
1051 goto rx_dropped;
1052 }
1053 else
1054 {
1055 pRxTS->RxLastFragNum = frag;
1056 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1057 }
1058 }
1059 else
1060 {
1061 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__);
1062 goto rx_dropped;
1063 }
1064 }
8fc8598e
JC		 1065 if (type == IEEE80211_FTYPE_MGMT) {
1066
8fc8598e
JC		 1067
1068 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1069 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1070 goto rx_dropped;
1071 else
1072 goto rx_exit;
1073 }
1074
1075 /* Data frame - extract src/dst addresses */
1076 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1077 case IEEE80211_FCTL_FROMDS:
1078 memcpy(dst, hdr->addr1, ETH_ALEN);
1079 memcpy(src, hdr->addr3, ETH_ALEN);
1080 memcpy(bssid, hdr->addr2, ETH_ALEN);
1081 break;
1082 case IEEE80211_FCTL_TODS:
1083 memcpy(dst, hdr->addr3, ETH_ALEN);
1084 memcpy(src, hdr->addr2, ETH_ALEN);
1085 memcpy(bssid, hdr->addr1, ETH_ALEN);
1086 break;
1087 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1088 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1089 goto rx_dropped;
1090 memcpy(dst, hdr->addr3, ETH_ALEN);
1091 memcpy(src, hdr->addr4, ETH_ALEN);
1092 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1093 break;
1094 case 0:
1095 memcpy(dst, hdr->addr1, ETH_ALEN);
1096 memcpy(src, hdr->addr2, ETH_ALEN);
1097 memcpy(bssid, hdr->addr3, ETH_ALEN);
1098 break;
1099 }
1100
1101#ifdef NOT_YET
1102 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1103 goto rx_dropped;
1104 if (wds) {
1105 skb->dev = dev = wds;
1106 stats = hostap_get_stats(dev);
1107 }
1108
1109 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1110 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1111 ieee->stadev &&
1112 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1113 /* Frame from BSSID of the AP for which we are a client */
1114 skb->dev = dev = ieee->stadev;
1115 stats = hostap_get_stats(dev);
1116 from_assoc_ap = 1;
1117 }
1118#endif
1119
1120 dev->last_rx = jiffies;
1121
1122#ifdef NOT_YET
1123 if ((ieee->iw_mode == IW_MODE_MASTER ||
1124 ieee->iw_mode == IW_MODE_REPEAT) &&
1125 !from_assoc_ap) {
1126 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1127 wds != NULL)) {
1128 case AP_RX_CONTINUE_NOT_AUTHORIZED:
1129 frame_authorized = 0;
1130 break;
1131 case AP_RX_CONTINUE:
1132 frame_authorized = 1;
1133 break;
1134 case AP_RX_DROP:
1135 goto rx_dropped;
1136 case AP_RX_EXIT:
1137 goto rx_exit;
1138 }
1139 }
1140#endif
1141 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1142 /* Nullfunc frames may have PS-bit set, so they must be passed to
1143 * hostap_handle_sta_rx() before being dropped here. */
1144 if (stype != IEEE80211_STYPE_DATA &&
1145 stype != IEEE80211_STYPE_DATA_CFACK &&
1146 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1147 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1148 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1149 ) {
1150 if (stype != IEEE80211_STYPE_NULLFUNC)
1151 IEEE80211_DEBUG_DROP(
1152 "RX: dropped data frame "
1153 "with no data (type=0x%02x, "
1154 "subtype=0x%02x, len=%d)\n",
1155 type, stype, skb->len);
1156 goto rx_dropped;
1157 }
1158 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1159 goto rx_dropped;
1160
1161 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1162
1163 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1164 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1165 {
1166 printk("decrypt frame error\n");
1167 goto rx_dropped;
1168 }
1169
1170
1171 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1172
1173 /* skb: hdr + (possibly fragmented) plaintext payload */
1174 // PR: FIXME: hostap has additional conditions in the "if" below:
1175 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1176 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1177 int flen;
1178 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1179 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1180
1181 if (!frag_skb) {
1182 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1183 "Rx cannot get skb from fragment "
1184 "cache (morefrag=%d seq=%u frag=%u)\n",
1185 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1186 WLAN_GET_SEQ_SEQ(sc), frag);
1187 goto rx_dropped;
1188 }
1189 flen = skb->len;
1190 if (frag != 0)
1191 flen -= hdrlen;
1192
1193 if (frag_skb->tail + flen > frag_skb->end) {
1194 printk(KERN_WARNING "%s: host decrypted and "
1195 "reassembled frame did not fit skb\n",
1196 dev->name);
1197 ieee80211_frag_cache_invalidate(ieee, hdr);
1198 goto rx_dropped;
1199 }
1200
1201 if (frag == 0) {
1202 /* copy first fragment (including full headers) into
1203 * beginning of the fragment cache skb */
1204 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1205 } else {
1206 /* append frame payload to the end of the fragment
1207 * cache skb */
1208 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1209 flen);
1210 }
1211 dev_kfree_skb_any(skb);
1212 skb = NULL;
1213
1214 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1215 /* more fragments expected - leave the skb in fragment
1216 * cache for now; it will be delivered to upper layers
1217 * after all fragments have been received */
1218 goto rx_exit;
1219 }
1220
1221 /* this was the last fragment and the frame will be
1222 * delivered, so remove skb from fragment cache */
1223 skb = frag_skb;
1224 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1225 ieee80211_frag_cache_invalidate(ieee, hdr);
1226 }
1227
1228 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1229 * encrypted/authenticated */
1230 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1231 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1232 {
1233 printk("==>decrypt msdu error\n");
1234 goto rx_dropped;
1235 }
1236
1237 //added by amy for AP roaming
1238 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1239 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1240
1241 hdr = (struct ieee80211_hdr_4addr *) skb->data;
1242 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1243 if (/*ieee->ieee802_1x &&*/
1244 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1245
1246#ifdef CONFIG_IEEE80211_DEBUG
1247 /* pass unencrypted EAPOL frames even if encryption is
1248 * configured */
1249 struct eapol *eap = (struct eapol *)(skb->data +
1250 24);
1251 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1252 eap_get_type(eap->type));
1253#endif
1254 } else {
1255 IEEE80211_DEBUG_DROP(
1256 "encryption configured, but RX "
0ee9f67c
JP		 1257 "frame not encrypted (SA=%pM)\n",
1258 hdr->addr2);
8fc8598e
JC		 1259 goto rx_dropped;
1260 }
1261 }
1262
1263#ifdef CONFIG_IEEE80211_DEBUG
1264 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1265 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1266 struct eapol *eap = (struct eapol *)(skb->data +
1267 24);
1268 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1269 eap_get_type(eap->type));
1270 }
1271#endif
1272
1273 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1274 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1275 IEEE80211_DEBUG_DROP(
1276 "dropped unencrypted RX data "
0ee9f67c 1277 "frame from %pM"
8fc8598e 1278 " (drop_unencrypted=1)\n",
0ee9f67c 1279 hdr->addr2);
8fc8598e
JC		 1280 goto rx_dropped;
1281 }
1282/*
1283 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1284 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1285 }
1286*/
1287//added by amy for reorder
8fc8598e
JC		 1288 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1289 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1))
1290 {
1291 TID = Frame_QoSTID(skb->data);
1292 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1293 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true);
1294 if(TID !=0 && TID !=3)
1295 {
1296 ieee->bis_any_nonbepkts = true;
1297 }
1298 }
8fc8598e
JC		 1299//added by amy for reorder
1300 /* skb: hdr + (possible reassembled) full plaintext payload */
1301 payload = skb->data + hdrlen;
1302 //ethertype = (payload[6] << 8) | payload[7];
32414878 1303 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
8fc8598e
JC		 1304 if(rxb == NULL)
1305 {
1306 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__);
1307 goto rx_dropped;
1308 }
1309 /* to parse amsdu packets */
1310 /* qos data packets & reserved bit is 1 */
1311 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) {
1312 /* only to free rxb, and not submit the packets to upper layer */
1313 for(i =0; i < rxb->nr_subframes; i++) {
1314 dev_kfree_skb(rxb->subframes[i]);
1315 }
1316 kfree(rxb);
1317 rxb = NULL;
1318 goto rx_dropped;
1319 }
1320
1321//added by amy for reorder
1322 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){
1323//added by amy for reorder
1324 for(i = 0; i<rxb->nr_subframes; i++) {
1325 struct sk_buff *sub_skb = rxb->subframes[i];
1326
1327 if (sub_skb) {
1328 /* convert hdr + possible LLC headers into Ethernet header */
1329 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1330 if (sub_skb->len >= 8 &&
1331 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1332 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1333 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1334 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1335 * replace EtherType */
1336 skb_pull(sub_skb, SNAP_SIZE);
1337 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1338 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1339 } else {
1340 u16 len;
1341 /* Leave Ethernet header part of hdr and full payload */
1342 len = htons(sub_skb->len);
1343 memcpy(skb_push(sub_skb, 2), &len, 2);
1344 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1345 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1346 }
1347
1348 stats->rx_packets++;
1349 stats->rx_bytes += sub_skb->len;
1350 if(is_multicast_ether_addr(dst)) {
1351 stats->multicast++;
1352 }
1353
1354 /* Indicat the packets to upper layer */
1355 //printk("0skb_len(%d)\n", skb->len);
1356 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1357 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1358 sub_skb->dev = dev;
1359 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1360 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1361 ieee->last_rx_ps_time = jiffies;
1362 //printk("1skb_len(%d)\n", skb->len);
1363 netif_rx(sub_skb);
1364 }
1365 }
1366 kfree(rxb);
1367 rxb = NULL;
1368
1369 }
1370 else
1371 {
1372 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__);
1373 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1374 }
1375#ifndef JOHN_NOCPY
1376 dev_kfree_skb(skb);
1377#endif
1378
1379 rx_exit:
1380#ifdef NOT_YET
1381 if (sta)
1382 hostap_handle_sta_release(sta);
1383#endif
1384 return 1;
1385
1386 rx_dropped:
e72714fb
IM		 1387 kfree(rxb);
1388 rxb = NULL;
8fc8598e
JC		 1389 stats->rx_dropped++;
1390
1391 /* Returning 0 indicates to caller that we have not handled the SKB--
1392 * so it is still allocated and can be used again by underlying
1393 * hardware as a DMA target */
1394 return 0;
1395}
1396
1397#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1398
1399static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1400
1401/*
25985edc 1402* Make the structure we read from the beacon packet to have
8fc8598e
JC		 1403* the right values
1404*/
1405static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1406 *info_element, int sub_type)
1407{
1408
1409 if (info_element->qui_subtype != sub_type)
1410 return -1;
1411 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1412 return -1;
1413 if (info_element->qui_type != QOS_OUI_TYPE)
1414 return -1;
1415 if (info_element->version != QOS_VERSION_1)
1416 return -1;
1417
1418 return 0;
1419}
1420
1421
1422/*
1423 * Parse a QoS parameter element
1424 */
1425static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1426 *element_param, struct ieee80211_info_element
1427 *info_element)
1428{
1429 int ret = 0;
1430 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1431
1432 if ((info_element == NULL) || (element_param == NULL))
1433 return -1;
1434
1435 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1436 memcpy(element_param->info_element.qui, info_element->data,
1437 info_element->len);
1438 element_param->info_element.elementID = info_element->id;
1439 element_param->info_element.length = info_element->len;
1440 } else
1441 ret = -1;
1442 if (ret == 0)
1443 ret = ieee80211_verify_qos_info(&element_param->info_element,
1444 QOS_OUI_PARAM_SUB_TYPE);
1445 return ret;
1446}
1447
1448/*
1449 * Parse a QoS information element
1450 */
1451static int ieee80211_read_qos_info_element(struct
1452 ieee80211_qos_information_element
1453 *element_info, struct ieee80211_info_element
1454 *info_element)
1455{
1456 int ret = 0;
1457 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1458
1459 if (element_info == NULL)
1460 return -1;
1461 if (info_element == NULL)
1462 return -1;
1463
1464 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1465 memcpy(element_info->qui, info_element->data,
1466 info_element->len);
1467 element_info->elementID = info_element->id;
1468 element_info->length = info_element->len;
1469 } else
1470 ret = -1;
1471
1472 if (ret == 0)
1473 ret = ieee80211_verify_qos_info(element_info,
1474 QOS_OUI_INFO_SUB_TYPE);
1475 return ret;
1476}
1477
1478
1479/*
1480 * Write QoS parameters from the ac parameters.
1481 */
1482static int ieee80211_qos_convert_ac_to_parameters(struct
1483 ieee80211_qos_parameter_info
1484 *param_elm, struct
1485 ieee80211_qos_parameters
1486 *qos_param)
1487{
1488 int rc = 0;
1489 int i;
1490 struct ieee80211_qos_ac_parameter *ac_params;
1491 u8 aci;
1492 //u8 cw_min;
1493 //u8 cw_max;
1494
1495 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1496 ac_params = &(param_elm->ac_params_record[i]);
1497
1498 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1499
1500 if(aci >= QOS_QUEUE_NUM)
1501 continue;
1502 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1503
1504 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1505 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
1506
1507 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1508
1509 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1510
1511 qos_param->flag[aci] =
1512 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1513 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1514 }
1515 return rc;
1516}
1517
1518/*
1519 * we have a generic data element which it may contain QoS information or
1520 * parameters element. check the information element length to decide
1521 * which type to read
1522 */
1523static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1524 *info_element,
1525 struct ieee80211_network *network)
1526{
1527 int rc = 0;
1528 struct ieee80211_qos_parameters *qos_param = NULL;
1529 struct ieee80211_qos_information_element qos_info_element;
1530
1531 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1532
1533 if (rc == 0) {
1534 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1535 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1536 } else {
1537 struct ieee80211_qos_parameter_info param_element;
1538
1539 rc = ieee80211_read_qos_param_element(&param_element,
1540 info_element);
1541 if (rc == 0) {
1542 qos_param = &(network->qos_data.parameters);
1543 ieee80211_qos_convert_ac_to_parameters(&param_element,
1544 qos_param);
1545 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1546 network->qos_data.param_count =
1547 param_element.info_element.ac_info & 0x0F;
1548 }
1549 }
1550
1551 if (rc == 0) {
1552 IEEE80211_DEBUG_QOS("QoS is supported\n");
1553 network->qos_data.supported = 1;
1554 }
1555 return rc;
1556}
1557
1558#ifdef CONFIG_IEEE80211_DEBUG
1559#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1560
1561static const char *get_info_element_string(u16 id)
1562{
1563 switch (id) {
1564 MFIE_STRING(SSID);
1565 MFIE_STRING(RATES);
1566 MFIE_STRING(FH_SET);
1567 MFIE_STRING(DS_SET);
1568 MFIE_STRING(CF_SET);
1569 MFIE_STRING(TIM);
1570 MFIE_STRING(IBSS_SET);
1571 MFIE_STRING(COUNTRY);
1572 MFIE_STRING(HOP_PARAMS);
1573 MFIE_STRING(HOP_TABLE);
1574 MFIE_STRING(REQUEST);
1575 MFIE_STRING(CHALLENGE);
1576 MFIE_STRING(POWER_CONSTRAINT);
1577 MFIE_STRING(POWER_CAPABILITY);
1578 MFIE_STRING(TPC_REQUEST);
1579 MFIE_STRING(TPC_REPORT);
1580 MFIE_STRING(SUPP_CHANNELS);
1581 MFIE_STRING(CSA);
1582 MFIE_STRING(MEASURE_REQUEST);
1583 MFIE_STRING(MEASURE_REPORT);
1584 MFIE_STRING(QUIET);
1585 MFIE_STRING(IBSS_DFS);
1586 // MFIE_STRING(ERP_INFO);
1587 MFIE_STRING(RSN);
1588 MFIE_STRING(RATES_EX);
1589 MFIE_STRING(GENERIC);
1590 MFIE_STRING(QOS_PARAMETER);
1591 default:
1592 return "UNKNOWN";
1593 }
1594}
1595#endif
1596
8fc8598e
JC		 1597static inline void ieee80211_extract_country_ie(
1598 struct ieee80211_device *ieee,
1599 struct ieee80211_info_element *info_element,
1600 struct ieee80211_network *network,
1601 u8 * addr2
1602)
1603{
1604 if(IS_DOT11D_ENABLE(ieee))
1605 {
1606 if(info_element->len!= 0)
1607 {
1608 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1609 network->CountryIeLen = info_element->len;
1610
1611 if(!IS_COUNTRY_IE_VALID(ieee))
1612 {
1613 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1614 }
1615 }
1616
1617 //
1618 // 070305, rcnjko: I update country IE watch dog here because
1619 // some AP (e.g. Cisco 1242) don't include country IE in their
1620 // probe response frame.
1621 //
1622 if(IS_EQUAL_CIE_SRC(ieee, addr2) )
1623 {
1624 UPDATE_CIE_WATCHDOG(ieee);
1625 }
1626 }
1627
1628}
8fc8598e
JC		 1629
1630int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1631 struct ieee80211_info_element *info_element,
1632 u16 length,
1633 struct ieee80211_network *network,
1634 struct ieee80211_rx_stats *stats)
1635{
1636 u8 i;
1637 short offset;
1638 u16 tmp_htcap_len=0;
1639 u16 tmp_htinfo_len=0;
1640 u16 ht_realtek_agg_len=0;
1641 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1642// u16 broadcom_len = 0;
1643#ifdef CONFIG_IEEE80211_DEBUG
1644 char rates_str[64];
1645 char *p;
1646#endif
1647
1648 while (length >= sizeof(*info_element)) {
1649 if (sizeof(*info_element) + info_element->len > length) {
1650 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1651 "info_element->len + 2 > left : "
1652 "info_element->len+2=%zd left=%d, id=%d.\n",
1653 info_element->len +
1654 sizeof(*info_element),
1655 length, info_element->id);
1656 /* We stop processing but don't return an error here
1657 * because some misbehaviour APs break this rule. ie.
1658 * Orinoco AP1000. */
1659 break;
1660 }
1661
1662 switch (info_element->id) {
1663 case MFIE_TYPE_SSID:
1664 if (ieee80211_is_empty_essid(info_element->data,
1665 info_element->len)) {
1666 network->flags |= NETWORK_EMPTY_ESSID;
1667 break;
1668 }
1669
1670 network->ssid_len = min(info_element->len,
1671 (u8) IW_ESSID_MAX_SIZE);
1672 memcpy(network->ssid, info_element->data, network->ssid_len);
1673 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1674 memset(network->ssid + network->ssid_len, 0,
1675 IW_ESSID_MAX_SIZE - network->ssid_len);
1676
1677 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1678 network->ssid, network->ssid_len);
1679 break;
1680
1681 case MFIE_TYPE_RATES:
1682#ifdef CONFIG_IEEE80211_DEBUG
1683 p = rates_str;
1684#endif
1685 network->rates_len = min(info_element->len,
1686 MAX_RATES_LENGTH);
1687 for (i = 0; i < network->rates_len; i++) {
1688 network->rates[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[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: '%s' (%d)\n",
1705 rates_str, network->rates_len);
1706 break;
1707
1708 case MFIE_TYPE_RATES_EX:
1709#ifdef CONFIG_IEEE80211_DEBUG
1710 p = rates_str;
1711#endif
1712 network->rates_ex_len = min(info_element->len,
1713 MAX_RATES_EX_LENGTH);
1714 for (i = 0; i < network->rates_ex_len; i++) {
1715 network->rates_ex[i] = info_element->data[i];
1716#ifdef CONFIG_IEEE80211_DEBUG
1717 p += snprintf(p, sizeof(rates_str) -
1718 (p - rates_str), "%02X ",
1719 network->rates[i]);
1720#endif
1721 if (ieee80211_is_ofdm_rate
1722 (info_element->data[i])) {
1723 network->flags |= NETWORK_HAS_OFDM;
1724 if (info_element->data[i] &
1725 IEEE80211_BASIC_RATE_MASK)
1726 network->flags &=
1727 ~NETWORK_HAS_CCK;
1728 }
1729 }
1730
1731 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1732 rates_str, network->rates_ex_len);
1733 break;
1734
1735 case MFIE_TYPE_DS_SET:
1736 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1737 info_element->data[0]);
1738 network->channel = info_element->data[0];
1739 break;
1740
1741 case MFIE_TYPE_FH_SET:
1742 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1743 break;
1744
1745 case MFIE_TYPE_CF_SET:
1746 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1747 break;
1748
1749 case MFIE_TYPE_TIM:
1750 if(info_element->len < 4)
1751 break;
1752
1753 network->tim.tim_count = info_element->data[0];
1754 network->tim.tim_period = info_element->data[1];
1755
1756 network->dtim_period = info_element->data[1];
1757 if(ieee->state != IEEE80211_LINKED)
1758 break;
1759
1760 network->last_dtim_sta_time[0] = stats->mac_time[0];
1761 network->last_dtim_sta_time[1] = stats->mac_time[1];
1762
1763 network->dtim_data = IEEE80211_DTIM_VALID;
1764
1765 if(info_element->data[0] != 0)
1766 break;
1767
1768 if(info_element->data[2] & 1)
1769 network->dtim_data |= IEEE80211_DTIM_MBCAST;
1770
1771 offset = (info_element->data[2] >> 1)*2;
1772
1773 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id);
1774
1775 if(ieee->assoc_id < 8*offset ||
1776 ieee->assoc_id > 8*(offset + info_element->len -3))
1777
1778 break;
1779
1780 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
1781
1782 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1783 network->dtim_data |= IEEE80211_DTIM_UCAST;
1784
1785 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1786 break;
1787
1788 case MFIE_TYPE_ERP:
1789 network->erp_value = info_element->data[0];
1790 network->flags |= NETWORK_HAS_ERP_VALUE;
1791 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1792 network->erp_value);
1793 break;
1794 case MFIE_TYPE_IBSS_SET:
1795 network->atim_window = info_element->data[0];
1796 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1797 network->atim_window);
1798 break;
1799
1800 case MFIE_TYPE_CHALLENGE:
1801 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1802 break;
1803
1804 case MFIE_TYPE_GENERIC:
1805 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1806 info_element->len);
1807 if (!ieee80211_parse_qos_info_param_IE(info_element,
1808 network))
1809 break;
1810
1811 if (info_element->len >= 4 &&
1812 info_element->data[0] == 0x00 &&
1813 info_element->data[1] == 0x50 &&
1814 info_element->data[2] == 0xf2 &&
1815 info_element->data[3] == 0x01) {
1816 network->wpa_ie_len = min(info_element->len + 2,
1817 MAX_WPA_IE_LEN);
1818 memcpy(network->wpa_ie, info_element,
1819 network->wpa_ie_len);
1820 break;
1821 }
1822
1823#ifdef THOMAS_TURBO
1824 if (info_element->len == 7 &&
1825 info_element->data[0] == 0x00 &&
1826 info_element->data[1] == 0xe0 &&
1827 info_element->data[2] == 0x4c &&
1828 info_element->data[3] == 0x01 &&
1829 info_element->data[4] == 0x02) {
1830 network->Turbo_Enable = 1;
1831 }
1832#endif
1833
1834 //for HTcap and HTinfo parameters
1835 if(tmp_htcap_len == 0){
1836 if(info_element->len >= 4 &&
1837 info_element->data[0] == 0x00 &&
1838 info_element->data[1] == 0x90 &&
1839 info_element->data[2] == 0x4c &&
1840 info_element->data[3] == 0x033){
1841
1842 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1843 if(tmp_htcap_len != 0){
1844 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1845 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1846 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1847 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1848 }
1849 }
1850 if(tmp_htcap_len != 0)
1851 network->bssht.bdSupportHT = true;
1852 else
1853 network->bssht.bdSupportHT = false;
1854 }
1855
1856
1857 if(tmp_htinfo_len == 0){
1858 if(info_element->len >= 4 &&
1859 info_element->data[0] == 0x00 &&
1860 info_element->data[1] == 0x90 &&
1861 info_element->data[2] == 0x4c &&
1862 info_element->data[3] == 0x034){
1863
1864 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1865 if(tmp_htinfo_len != 0){
1866 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1867 if(tmp_htinfo_len){
1868 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1869 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1870 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1871 }
1872
1873 }
1874
1875 }
1876 }
1877
1878 if(ieee->aggregation){
1879 if(network->bssht.bdSupportHT){
1880 if(info_element->len >= 4 &&
1881 info_element->data[0] == 0x00 &&
1882 info_element->data[1] == 0xe0 &&
1883 info_element->data[2] == 0x4c &&
1884 info_element->data[3] == 0x02){
1885
1886 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1887 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1888
1889 }
1890 if(ht_realtek_agg_len >= 5){
1891 network->bssht.bdRT2RTAggregation = true;
1892
1893 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1894 network->bssht.bdRT2RTLongSlotTime = true;
1895 }
1896 }
1897
1898 }
1899
1900 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1901 {
1902 if((info_element->len >= 3 &&
1903 info_element->data[0] == 0x00 &&
1904 info_element->data[1] == 0x05 &&
1905 info_element->data[2] == 0xb5) ||
1906 (info_element->len >= 3 &&
1907 info_element->data[0] == 0x00 &&
1908 info_element->data[1] == 0x0a &&
1909 info_element->data[2] == 0xf7) ||
1910 (info_element->len >= 3 &&
1911 info_element->data[0] == 0x00 &&
1912 info_element->data[1] == 0x10 &&
1913 info_element->data[2] == 0x18)){
1914
1915 network->broadcom_cap_exist = true;
1916
1917 }
1918 }
8fc8598e
JC		 1919 if(info_element->len >= 3 &&
1920 info_element->data[0] == 0x00 &&
1921 info_element->data[1] == 0x0c &&
1922 info_element->data[2] == 0x43)
1923 {
1924 network->ralink_cap_exist = true;
1925 }
1926 else
1927 network->ralink_cap_exist = false;
1928 //added by amy for atheros AP
1929 if((info_element->len >= 3 &&
1930 info_element->data[0] == 0x00 &&
1931 info_element->data[1] == 0x03 &&
1932 info_element->data[2] == 0x7f) ||
1933 (info_element->len >= 3 &&
1934 info_element->data[0] == 0x00 &&
1935 info_element->data[1] == 0x13 &&
1936 info_element->data[2] == 0x74))
1937 {
1938 printk("========>%s(): athros AP is exist\n",__FUNCTION__);
1939 network->atheros_cap_exist = true;
1940 }
1941 else
1942 network->atheros_cap_exist = false;
1943
1944 if(info_element->len >= 3 &&
1945 info_element->data[0] == 0x00 &&
1946 info_element->data[1] == 0x40 &&
1947 info_element->data[2] == 0x96)
1948 {
1949 network->cisco_cap_exist = true;
1950 }
1951 else
1952 network->cisco_cap_exist = false;
1953 //added by amy for LEAP of cisco
1954 if(info_element->len > 4 &&
1955 info_element->data[0] == 0x00 &&
1956 info_element->data[1] == 0x40 &&
1957 info_element->data[2] == 0x96 &&
1958 info_element->data[3] == 0x01)
1959 {
1960 if(info_element->len == 6)
1961 {
1962 memcpy(network->CcxRmState, &info_element[4], 2);
1963 if(network->CcxRmState[0] != 0)
1964 {
1965 network->bCcxRmEnable = true;
1966 }
1967 else
1968 network->bCcxRmEnable = false;
1969 //
1970 // CCXv4 Table 59-1 MBSSID Masks.
1971 //
1972 network->MBssidMask = network->CcxRmState[1] & 0x07;
1973 if(network->MBssidMask != 0)
1974 {
1975 network->bMBssidValid = true;
1976 network->MBssidMask = 0xff << (network->MBssidMask);
1977 cpMacAddr(network->MBssid, network->bssid);
1978 network->MBssid[5] &= network->MBssidMask;
1979 }
1980 else
1981 {
1982 network->bMBssidValid = false;
1983 }
1984 }
1985 else
1986 {
1987 network->bCcxRmEnable = false;
1988 }
1989 }
1990 if(info_element->len > 4 &&
1991 info_element->data[0] == 0x00 &&
1992 info_element->data[1] == 0x40 &&
1993 info_element->data[2] == 0x96 &&
1994 info_element->data[3] == 0x03)
1995 {
1996 if(info_element->len == 5)
1997 {
1998 network->bWithCcxVerNum = true;
1999 network->BssCcxVerNumber = info_element->data[4];
2000 }
2001 else
2002 {
2003 network->bWithCcxVerNum = false;
2004 network->BssCcxVerNumber = 0;
2005 }
2006 }
2007 break;
2008
2009 case MFIE_TYPE_RSN:
2010 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2011 info_element->len);
2012 network->rsn_ie_len = min(info_element->len + 2,
2013 MAX_WPA_IE_LEN);
2014 memcpy(network->rsn_ie, info_element,
2015 network->rsn_ie_len);
2016 break;
2017
2018 //HT related element.
2019 case MFIE_TYPE_HT_CAP:
2020 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2021 info_element->len);
2022 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
2023 if(tmp_htcap_len != 0){
2024 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2025 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
2026 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
2027 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2028
2029 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2030 // windows driver will update WMM parameters each beacon received once connected
2031 // Linux driver is a bit different.
2032 network->bssht.bdSupportHT = true;
2033 }
2034 else
2035 network->bssht.bdSupportHT = false;
2036 break;
2037
2038
2039 case MFIE_TYPE_HT_INFO:
2040 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2041 info_element->len);
2042 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2043 if(tmp_htinfo_len){
2044 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2045 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2046 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2047 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2048 }
2049 break;
2050
2051 case MFIE_TYPE_AIRONET:
2052 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2053 info_element->len);
2054 if(info_element->len >IE_CISCO_FLAG_POSITION)
2055 {
2056 network->bWithAironetIE = true;
2057
2058 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2059 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2060 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2061 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2062 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2063 {
2064 network->bCkipSupported = true;
2065 }
2066 else
2067 {
2068 network->bCkipSupported = false;
2069 }
2070 }
2071 else
2072 {
2073 network->bWithAironetIE = false;
2074 network->bCkipSupported = false;
2075 }
2076 break;
2077 case MFIE_TYPE_QOS_PARAMETER:
2078 printk(KERN_ERR
2079 "QoS Error need to parse QOS_PARAMETER IE\n");
2080 break;
2081
8fc8598e
JC		 2082 case MFIE_TYPE_COUNTRY:
2083 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2084 info_element->len);
2085 //printk("=====>Receive <%s> Country IE\n",network->ssid);
2086 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2087 break;
8fc8598e 2088/* TODO */
8fc8598e
JC		 2089 default:
2090 IEEE80211_DEBUG_MGMT
2091 ("Unsupported info element: %s (%d)\n",
2092 get_info_element_string(info_element->id),
2093 info_element->id);
2094 break;
2095 }
2096
2097 length -= sizeof(*info_element) + info_element->len;
2098 info_element =
2099 (struct ieee80211_info_element *)&info_element->
2100 data[info_element->len];
2101 }
2102
2103 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2104 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2105 {
2106 network->unknown_cap_exist = true;
2107 }
2108 else
2109 {
2110 network->unknown_cap_exist = false;
2111 }
2112 return 0;
2113}
2114
2115static inline u8 ieee80211_SignalStrengthTranslate(
2116 u8 CurrSS
2117 )
2118{
2119 u8 RetSS;
2120
2121 // Step 1. Scale mapping.
2122 if(CurrSS >= 71 && CurrSS <= 100)
2123 {
2124 RetSS = 90 + ((CurrSS - 70) / 3);
2125 }
2126 else if(CurrSS >= 41 && CurrSS <= 70)
2127 {
2128 RetSS = 78 + ((CurrSS - 40) / 3);
2129 }
2130 else if(CurrSS >= 31 && CurrSS <= 40)
2131 {
2132 RetSS = 66 + (CurrSS - 30);
2133 }
2134 else if(CurrSS >= 21 && CurrSS <= 30)
2135 {
2136 RetSS = 54 + (CurrSS - 20);
2137 }
2138 else if(CurrSS >= 5 && CurrSS <= 20)
2139 {
2140 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2141 }
2142 else if(CurrSS == 4)
2143 {
2144 RetSS = 36;
2145 }
2146 else if(CurrSS == 3)
2147 {
2148 RetSS = 27;
2149 }
2150 else if(CurrSS == 2)
2151 {
2152 RetSS = 18;
2153 }
2154 else if(CurrSS == 1)
2155 {
2156 RetSS = 9;
2157 }
2158 else
2159 {
2160 RetSS = CurrSS;
2161 }
2162 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2163
2164 // Step 2. Smoothing.
2165
2166 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2167
2168 return RetSS;
2169}
2170
2171long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index.
2172{
2173 long signal_power; // in dBm.
2174
2175 // Translate to dBm (x=0.5y-95).
2176 signal_power = (long)((signal_strength_index + 1) >> 1);
2177 signal_power -= 95;
2178
2179 return signal_power;
2180}
2181
2182static inline int ieee80211_network_init(
2183 struct ieee80211_device *ieee,
2184 struct ieee80211_probe_response *beacon,
2185 struct ieee80211_network *network,
2186 struct ieee80211_rx_stats *stats)
2187{
2188#ifdef CONFIG_IEEE80211_DEBUG
2189 //char rates_str[64];
2190 //char *p;
2191#endif
2192
2193 network->qos_data.active = 0;
2194 network->qos_data.supported = 0;
2195 network->qos_data.param_count = 0;
2196 network->qos_data.old_param_count = 0;
2197
2198 /* Pull out fixed field data */
2199 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2200 network->capability = le16_to_cpu(beacon->capability);
2201 network->last_scanned = jiffies;
2202 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2203 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2204 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2205 /* Where to pull this? beacon->listen_interval;*/
2206 network->listen_interval = 0x0A;
2207 network->rates_len = network->rates_ex_len = 0;
2208 network->last_associate = 0;
2209 network->ssid_len = 0;
2210 network->flags = 0;
2211 network->atim_window = 0;
2212 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2213 0x3 : 0x0;
2214 network->berp_info_valid = false;
2215 network->broadcom_cap_exist = false;
2216 network->ralink_cap_exist = false;
2217 network->atheros_cap_exist = false;
2218 network->cisco_cap_exist = false;
2219 network->unknown_cap_exist = false;
2220#ifdef THOMAS_TURBO
2221 network->Turbo_Enable = 0;
2222#endif
8fc8598e
JC		 2223 network->CountryIeLen = 0;
2224 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
8fc8598e
JC		 2225//Initialize HT parameters
2226 //ieee80211_ht_initialize(&network->bssht);
2227 HTInitializeBssDesc(&network->bssht);
2228 if (stats->freq == IEEE80211_52GHZ_BAND) {
2229 /* for A band (No DS info) */
2230 network->channel = stats->received_channel;
2231 } else
2232 network->flags |= NETWORK_HAS_CCK;
2233
2234 network->wpa_ie_len = 0;
2235 network->rsn_ie_len = 0;
2236
2237 if (ieee80211_parse_info_param
2238 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2239 return 1;
2240
2241 network->mode = 0;
2242 if (stats->freq == IEEE80211_52GHZ_BAND)
2243 network->mode = IEEE_A;
2244 else {
2245 if (network->flags & NETWORK_HAS_OFDM)
2246 network->mode |= IEEE_G;
2247 if (network->flags & NETWORK_HAS_CCK)
2248 network->mode |= IEEE_B;
2249 }
2250
2251 if (network->mode == 0) {
0ee9f67c 2252 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
8fc8598e
JC		 2253 "network.\n",
2254 escape_essid(network->ssid,
2255 network->ssid_len),
0ee9f67c 2256 network->bssid);
8fc8598e
JC		 2257 return 1;
2258 }
2259
2260 if(network->bssht.bdSupportHT){
2261 if(network->mode == IEEE_A)
2262 network->mode = IEEE_N_5G;
2263 else if(network->mode & (IEEE_G | IEEE_B))
2264 network->mode = IEEE_N_24G;
2265 }
2266 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2267 network->flags |= NETWORK_EMPTY_ESSID;
2268
8fc8598e
JC		 2269 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2270 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2271 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
8fc8598e
JC		 2272
2273 memcpy(&network->stats, stats, sizeof(network->stats));
2274
2275 return 0;
2276}
2277
2278static inline int is_same_network(struct ieee80211_network *src,
2279 struct ieee80211_network *dst, struct ieee80211_device* ieee)
2280{
2281 /* A network is only a duplicate if the channel, BSSID, ESSID
2282 * and the capability field (in particular IBSS and BSS) all match.
2283 * We treat all <hidden> with the same BSSID and channel
2284 * as one network */
2285 return //((src->ssid_len == dst->ssid_len) &&
2286 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2287 (src->channel == dst->channel) &&
2288 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2289 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2290 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2291 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2292 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2293 ((src->capability & WLAN_CAPABILITY_BSS) ==
2294 (dst->capability & WLAN_CAPABILITY_BSS)));
2295}
2296
2297static inline void update_network(struct ieee80211_network *dst,
2298 struct ieee80211_network *src)
2299{
2300 int qos_active;
2301 u8 old_param;
2302
2303 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2304 dst->capability = src->capability;
2305 memcpy(dst->rates, src->rates, src->rates_len);
2306 dst->rates_len = src->rates_len;
2307 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2308 dst->rates_ex_len = src->rates_ex_len;
2309 if(src->ssid_len > 0)
2310 {
2311 memset(dst->ssid, 0, dst->ssid_len);
2312 dst->ssid_len = src->ssid_len;
2313 memcpy(dst->ssid, src->ssid, src->ssid_len);
2314 }
2315 dst->mode = src->mode;
2316 dst->flags = src->flags;
2317 dst->time_stamp[0] = src->time_stamp[0];
2318 dst->time_stamp[1] = src->time_stamp[1];
2319 if (src->flags & NETWORK_HAS_ERP_VALUE)
2320 {
2321 dst->erp_value = src->erp_value;
2322 dst->berp_info_valid = src->berp_info_valid = true;
2323 }
2324 dst->beacon_interval = src->beacon_interval;
2325 dst->listen_interval = src->listen_interval;
2326 dst->atim_window = src->atim_window;
2327 dst->dtim_period = src->dtim_period;
2328 dst->dtim_data = src->dtim_data;
2329 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2330 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2331 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2332
2333 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2334 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2335 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2336 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2337 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2338 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2339 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2340 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2341 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2342 dst->ralink_cap_exist = src->ralink_cap_exist;
2343 dst->atheros_cap_exist = src->atheros_cap_exist;
2344 dst->cisco_cap_exist = src->cisco_cap_exist;
2345 dst->unknown_cap_exist = src->unknown_cap_exist;
2346 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2347 dst->wpa_ie_len = src->wpa_ie_len;
2348 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2349 dst->rsn_ie_len = src->rsn_ie_len;
2350
2351 dst->last_scanned = jiffies;
2352 /* qos related parameters */
2353 //qos_active = src->qos_data.active;
2354 qos_active = dst->qos_data.active;
2355 //old_param = dst->qos_data.old_param_count;
2356 old_param = dst->qos_data.param_count;
2357 if(dst->flags & NETWORK_HAS_QOS_MASK)
2358 memcpy(&dst->qos_data, &src->qos_data,
2359 sizeof(struct ieee80211_qos_data));
2360 else {
2361 dst->qos_data.supported = src->qos_data.supported;
2362 dst->qos_data.param_count = src->qos_data.param_count;
2363 }
2364
2365 if(dst->qos_data.supported == 1) {
2366 dst->QoS_Enable = 1;
2367 if(dst->ssid_len)
2368 IEEE80211_DEBUG_QOS
2369 ("QoS the network %s is QoS supported\n",
2370 dst->ssid);
2371 else
2372 IEEE80211_DEBUG_QOS
2373 ("QoS the network is QoS supported\n");
2374 }
2375 dst->qos_data.active = qos_active;
2376 dst->qos_data.old_param_count = old_param;
2377
2378 /* dst->last_associate is not overwritten */
8fc8598e
JC		 2379 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
2380 if(src->wmm_param[0].ac_aci_acm_aifsn|| \
2381 src->wmm_param[1].ac_aci_acm_aifsn|| \
2382 src->wmm_param[2].ac_aci_acm_aifsn|| \
4498dbcd 2383 src->wmm_param[3].ac_aci_acm_aifsn) {
8fc8598e
JC		 2384 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2385 }
2386 //dst->QoS_Enable = src->QoS_Enable;
8fc8598e
JC		 2387#ifdef THOMAS_TURBO
2388 dst->Turbo_Enable = src->Turbo_Enable;
2389#endif
2390
8fc8598e
JC		 2391 dst->CountryIeLen = src->CountryIeLen;
2392 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
8fc8598e
JC		 2393
2394 //added by amy for LEAP
2395 dst->bWithAironetIE = src->bWithAironetIE;
2396 dst->bCkipSupported = src->bCkipSupported;
2397 memcpy(dst->CcxRmState,src->CcxRmState,2);
2398 dst->bCcxRmEnable = src->bCcxRmEnable;
2399 dst->MBssidMask = src->MBssidMask;
2400 dst->bMBssidValid = src->bMBssidValid;
2401 memcpy(dst->MBssid,src->MBssid,6);
2402 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2403 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2404
2405}
2406
2407static inline int is_beacon(__le16 fc)
2408{
2409 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2410}
2411
2412static inline void ieee80211_process_probe_response(
2413 struct ieee80211_device *ieee,
2414 struct ieee80211_probe_response *beacon,
2415 struct ieee80211_rx_stats *stats)
2416{
2417 struct ieee80211_network network;
2418 struct ieee80211_network *target;
2419 struct ieee80211_network *oldest = NULL;
2420#ifdef CONFIG_IEEE80211_DEBUG
2421 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2422#endif
2423 unsigned long flags;
2424 short renew;
2425 //u8 wmm_info;
2426
2427 memset(&network, 0, sizeof(struct ieee80211_network));
2428 IEEE80211_DEBUG_SCAN(
0ee9f67c 2429 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
8fc8598e 2430 escape_essid(info_element->data, info_element->len),
0ee9f67c 2431 beacon->header.addr3,
8fc8598e
JC		 2432 (beacon->capability & (1<<0xf)) ? '1' : '0',
2433 (beacon->capability & (1<<0xe)) ? '1' : '0',
2434 (beacon->capability & (1<<0xd)) ? '1' : '0',
2435 (beacon->capability & (1<<0xc)) ? '1' : '0',
2436 (beacon->capability & (1<<0xb)) ? '1' : '0',
2437 (beacon->capability & (1<<0xa)) ? '1' : '0',
2438 (beacon->capability & (1<<0x9)) ? '1' : '0',
2439 (beacon->capability & (1<<0x8)) ? '1' : '0',
2440 (beacon->capability & (1<<0x7)) ? '1' : '0',
2441 (beacon->capability & (1<<0x6)) ? '1' : '0',
2442 (beacon->capability & (1<<0x5)) ? '1' : '0',
2443 (beacon->capability & (1<<0x4)) ? '1' : '0',
2444 (beacon->capability & (1<<0x3)) ? '1' : '0',
2445 (beacon->capability & (1<<0x2)) ? '1' : '0',
2446 (beacon->capability & (1<<0x1)) ? '1' : '0',
2447 (beacon->capability & (1<<0x0)) ? '1' : '0');
2448
2449 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
0ee9f67c 2450 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
8fc8598e
JC		 2451 escape_essid(info_element->data,
2452 info_element->len),
0ee9f67c 2453 beacon->header.addr3,
8fc8598e
JC		 2454 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2455 IEEE80211_STYPE_PROBE_RESP ?
2456 "PROBE RESPONSE" : "BEACON");
2457 return;
2458 }
2459
8fc8598e
JC		 2460 // For Asus EeePc request,
2461 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2462 // wireless adapter should follow the country code.
2463 // (2) If there is no any country code in beacon,
2464 // then wireless adapter should do active scan from ch1~11 and
2465 // passive scan from ch12~14
2466
2467 if( !IsLegalChannel(ieee, network.channel) )
2468 return;
2469 if(ieee->bGlobalDomain)
2470 {
2471 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP)
2472 {
2473 // Case 1: Country code
2474 if(IS_COUNTRY_IE_VALID(ieee) )
2475 {
2476 if( !IsLegalChannel(ieee, network.channel) )
2477 {
2478 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel);
2479 return;
2480 }
2481 }
2482 // Case 2: No any country code.
2483 else
2484 {
2485 // Filter over channel ch12~14
2486 if(network.channel > 11)
2487 {
2488 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel);
2489 return;
2490 }
2491 }
2492 }
2493 else
2494 {
2495 // Case 1: Country code
2496 if(IS_COUNTRY_IE_VALID(ieee) )
2497 {
2498 if( !IsLegalChannel(ieee, network.channel) )
2499 {
2500 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel);
2501 return;
2502 }
2503 }
2504 // Case 2: No any country code.
2505 else
2506 {
2507 // Filter over channel ch12~14
2508 if(network.channel > 14)
2509 {
2510 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel);
2511 return;
2512 }
2513 }
2514 }
2515 }
8fc8598e
JC		 2516
2517 /* The network parsed correctly -- so now we scan our known networks
2518 * to see if we can find it in our list.
2519 *
2520 * NOTE: This search is definitely not optimized. Once its doing
2521 * the "right thing" we'll optimize it for efficiency if
2522 * necessary */
2523
2524 /* Search for this entry in the list and update it if it is
2525 * already there. */
2526
2527 spin_lock_irqsave(&ieee->lock, flags);
2528
2529 if(is_same_network(&ieee->current_network, &network, ieee)) {
2530 update_network(&ieee->current_network, &network);
2531 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
2532 && ieee->current_network.berp_info_valid){
2533 if(ieee->current_network.erp_value& ERP_UseProtection)
2534 ieee->current_network.buseprotection = true;
2535 else
2536 ieee->current_network.buseprotection = false;
2537 }
2538 if(is_beacon(beacon->header.frame_ctl))
2539 {
2540 if(ieee->state == IEEE80211_LINKED)
2541 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2542 }
2543 else //hidden AP
2544 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
2545 }
2546
2547 list_for_each_entry(target, &ieee->network_list, list) {
2548 if (is_same_network(target, &network, ieee))
2549 break;
2550 if ((oldest == NULL) ||
2551 (target->last_scanned < oldest->last_scanned))
2552 oldest = target;
2553 }
2554
2555 /* If we didn't find a match, then get a new network slot to initialize
2556 * with this beacon's information */
2557 if (&target->list == &ieee->network_list) {
2558 if (list_empty(&ieee->network_free_list)) {
2559 /* If there are no more slots, expire the oldest */
2560 list_del(&oldest->list);
2561 target = oldest;
0ee9f67c 2562 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
8fc8598e
JC		 2563 "network list.\n",
2564 escape_essid(target->ssid,
2565 target->ssid_len),
0ee9f67c 2566 target->bssid);
8fc8598e
JC		 2567 } else {
2568 /* Otherwise just pull from the free list */
2569 target = list_entry(ieee->network_free_list.next,
2570 struct ieee80211_network, list);
2571 list_del(ieee->network_free_list.next);
2572 }
2573
2574
2575#ifdef CONFIG_IEEE80211_DEBUG
0ee9f67c 2576 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
8fc8598e
JC		 2577 escape_essid(network.ssid,
2578 network.ssid_len),
0ee9f67c 2579 network.bssid,
8fc8598e
JC		 2580 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2581 IEEE80211_STYPE_PROBE_RESP ?
2582 "PROBE RESPONSE" : "BEACON");
2583#endif
2584 memcpy(target, &network, sizeof(*target));
2585 list_add_tail(&target->list, &ieee->network_list);
2586 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2587 ieee80211_softmac_new_net(ieee,&network);
2588 } else {
0ee9f67c 2589 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
8fc8598e
JC		 2590 escape_essid(target->ssid,
2591 target->ssid_len),
0ee9f67c 2592 target->bssid,
8fc8598e
JC		 2593 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2594 IEEE80211_STYPE_PROBE_RESP ?
2595 "PROBE RESPONSE" : "BEACON");
2596
2597 /* we have an entry and we are going to update it. But this entry may
2598 * be already expired. In this case we do the same as we found a new
2599 * net and call the new_net handler
2600 */
2601 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2602 //YJ,add,080819,for hidden ap
2603 if(is_beacon(beacon->header.frame_ctl) == 0)
2604 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags);
2605 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2606 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2607 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2608 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\
2609 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
2610 renew = 1;
2611 //YJ,add,080819,for hidden ap,end
2612
2613 update_network(target, &network);
2614 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2615 ieee80211_softmac_new_net(ieee,&network);
2616 }
2617
2618 spin_unlock_irqrestore(&ieee->lock, flags);
2619 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\
2620 (ieee->state == IEEE80211_LINKED)) {
2621 if(ieee->handle_beacon != NULL) {
2622 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2623 }
2624 }
2625}
2626
2627void ieee80211_rx_mgt(struct ieee80211_device *ieee,
2628 struct ieee80211_hdr_4addr *header,
2629 struct ieee80211_rx_stats *stats)
2630{
2631 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2632
2633 case IEEE80211_STYPE_BEACON:
2634 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2635 WLAN_FC_GET_STYPE(header->frame_ctl));
2636 IEEE80211_DEBUG_SCAN("Beacon\n");
2637 ieee80211_process_probe_response(
2638 ieee, (struct ieee80211_probe_response *)header, stats);
2639 break;
2640
2641 case IEEE80211_STYPE_PROBE_RESP:
2642 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2643 WLAN_FC_GET_STYPE(header->frame_ctl));
2644 IEEE80211_DEBUG_SCAN("Probe response\n");
2645 ieee80211_process_probe_response(
2646 ieee, (struct ieee80211_probe_response *)header, stats);
2647 break;
2648
2649 }
2650}
2651
8fc8598e
JC		 2652EXPORT_SYMBOL(ieee80211_rx_mgt);
2653EXPORT_SYMBOL(ieee80211_rx);
kernel source for telekom puls (alcatel/mediatek)