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[mirror_ubuntu-hirsute-kernel.git] / drivers / staging / rtl8192u / ieee80211 / ieee80211_rx.c
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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
559a4c31 17 Andrea Merello <andrea.merello@gmail.com>
8fc8598e
JC		 18
19 A special thanks goes to Realtek for their support !
20
21******************************************************************************/
22
23
24#include <linux/compiler.h>
8fc8598e
JC		 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>
8fc8598e
JC		 39#include <linux/wireless.h>
40#include <linux/etherdevice.h>
ca67dfef 41#include <linux/uaccess.h>
8fc8598e
JC		 42#include <linux/ctype.h>
43
44#include "ieee80211.h"
8fc8598e 45#include "dot11d.h"
8fc8598e
JC		 46static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
47 struct sk_buff *skb,
48 struct ieee80211_rx_stats *rx_stats)
49{
5c2918a5 50 struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data;
8fc8598e
JC		 51 u16 fc = le16_to_cpu(hdr->frame_ctl);
52
53 skb->dev = ieee->dev;
fdc64a9e 54 skb_reset_mac_header(skb);
8fc8598e
JC		 55
56 skb_pull(skb, ieee80211_get_hdrlen(fc));
57 skb->pkt_type = PACKET_OTHERHOST;
6465144c 58 skb->protocol = htons(ETH_P_80211_RAW);
8fc8598e
JC		 59 memset(skb->cb, 0, sizeof(skb->cb));
60 netif_rx(skb);
61}
62
63
64/* Called only as a tasklet (software IRQ) */
65static struct ieee80211_frag_entry *
66ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
0b4ef0a6 67 unsigned int frag, u8 tid, u8 *src, u8 *dst)
8fc8598e
JC		 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) */
95static struct sk_buff *
96ieee80211_frag_cache_get(struct ieee80211_device *ieee,
5c2918a5 97 struct rtl_80211_hdr_4addr *hdr)
8fc8598e
JC		 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;
5c2918a5
PG		 105 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
106 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 107 u8 tid;
108
109 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 110 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
8fc8598e
JC		 111 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
112 tid = UP2AC(tid);
298291bb 113 tid++;
8fc8598e 114 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 115 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
8fc8598e
JC		 116 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
117 tid = UP2AC(tid);
298291bb 118 tid++;
8fc8598e
JC		 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 +
5c2918a5 126 sizeof(struct rtl_80211_hdr_4addr) +
8fc8598e
JC		 127 8 /* LLC */ +
128 2 /* alignment */ +
129 8 /* WEP */ +
130 ETH_ALEN /* WDS */ +
131 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
6e8cb1cf 132 if (!skb)
8fc8598e
JC		 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) */
165static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
5c2918a5 166 struct rtl_80211_hdr_4addr *hdr)
8fc8598e
JC		 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;
5c2918a5
PG		 172 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
173 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 174 u8 tid;
175
176 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 177 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
8fc8598e
JC		 178 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
179 tid = UP2AC(tid);
298291bb 180 tid++;
8fc8598e 181 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 182 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
8fc8598e
JC		 183 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
184 tid = UP2AC(tid);
298291bb 185 tid++;
8fc8598e
JC		 186 } else {
187 tid = 0;
188 }
189
0b4ef0a6 190 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
8fc8598e
JC		 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 */
211static inline int
212ieee80211_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 */
5c2918a5 220 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
8fc8598e
JC		 221
222 rx_stats->len = skb->len;
5c2918a5 223 ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats);
8236589b
DU		 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 */
fdc64a9e
SH		 226 {
227 dev_kfree_skb_any(skb);
228 return 0;
229 }
8fc8598e
JC		 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) {
d0bc218b 239 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
8fc8598e
JC		 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) */
288static unsigned char rfc1042_header[] =
289{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
290/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
291static 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 */
296static 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;
5c2918a5 301 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 302 u8 *pos;
303
304 if (skb->len < 24)
305 return 0;
306
5c2918a5 307 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 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 */
337static inline int
ea77527a 338ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
8fc8598e
JC		 339 struct ieee80211_crypt_data *crypt)
340{
5c2918a5 341 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 342 int res, hdrlen;
343
344 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
345 return 0;
8fc8598e
JC		 346 if (ieee->hwsec_active)
347 {
20f896c4 348 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
8fc8598e
JC		 349 tcb_desc->bHwSec = 1;
350 }
5c2918a5 351 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 352 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
353
8fc8598e
JC		 354 if (ieee->tkip_countermeasures &&
355 strcmp(crypt->ops->name, "TKIP") == 0) {
356 if (net_ratelimit()) {
357 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
0ee9f67c
JP		 358 "received packet from %pM\n",
359 ieee->dev->name, hdr->addr2);
8fc8598e
JC		 360 }
361 return -1;
362 }
8fc8598e
JC		 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(
0ee9f67c
JP		 369 "decryption failed (SA=%pM"
370 ") res=%d\n", hdr->addr2, res);
8fc8598e
JC		 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 */
384static inline int
ea77527a 385ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb,
8fc8598e
JC		 386 int keyidx, struct ieee80211_crypt_data *crypt)
387{
5c2918a5 388 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 389 int res, hdrlen;
390
391 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
392 return 0;
393 if (ieee->hwsec_active)
394 {
20f896c4 395 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
8fc8598e
JC		 396 tcb_desc->bHwSec = 1;
397 }
398
5c2918a5 399 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 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"
0ee9f67c
JP		 407 " (SA=%pM keyidx=%d)\n",
408 ieee->dev->name, hdr->addr2, keyidx);
8fc8598e
JC		 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)
418static int is_duplicate_packet(struct ieee80211_device *ieee,
5c2918a5 419 struct rtl_80211_hdr_4addr *header)
8fc8598e
JC		 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;
5c2918a5
PG		 427 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
428 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 429 u8 tid;
430
431
432 //TO2DS and QoS
433 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 434 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header;
8fc8598e
JC		 435 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
436 tid = UP2AC(tid);
298291bb 437 tid++;
8fc8598e 438 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
5c2918a5 439 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header;
8fc8598e
JC		 440 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
441 tid = UP2AC(tid);
298291bb 442 tid++;
8fc8598e
JC		 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;
0c293592 454
8fc8598e
JC		 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);
5a95f073 463 if (!entry)
8fc8598e 464 return 0;
8fc8598e
JC		 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)) {
879f3074 493 if (*last_frag == frag)
8fc8598e 494 goto drop;
8fc8598e
JC		 495 if (*last_frag + 1 != frag)
496 /* out-of-order fragment */
8fc8598e
JC		 497 goto drop;
498 } else
499 *last_seq = seq;
500
501 *last_frag = frag;
502 *last_time = jiffies;
503 return 0;
504
505drop:
506// BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
8fc8598e
JC		 507
508 return 1;
509}
4b10d50c
AR		 510
511static bool AddReorderEntry(PRX_TS_RECORD pTS, PRX_REORDER_ENTRY pReorderEntry)
8fc8598e
JC		 512{
513 struct list_head *pList = &pTS->RxPendingPktList;
8fc8598e
JC		 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 }
8fc8598e
JC		 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
ea77527a 537void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index)
8fc8598e
JC		 538{
539 u8 i = 0 , j=0;
540 u16 ethertype;
541// if(index > 1)
f8628a47 542// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__func__,index);
8fc8598e
JC		 543 for(j = 0; j<index; j++)
544 {
545//added by amy for reorder
ea77527a 546 struct ieee80211_rxb *prxb = prxbIndicateArray[j];
8fc8598e
JC		 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 {
8fc8598e 562 /* Leave Ethernet header part of hdr and full payload */
1c19f379 563 put_unaligned_be16(sub_skb->len, skb_push(sub_skb, 2));
8fc8598e
JC		 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) {
8fc8598e
JC		 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;
8fc8598e
JC		 578 netif_rx(sub_skb);
579 }
580 }
581 kfree(prxb);
582 prxb = NULL;
583 }
584}
585
586
4b10d50c
AR		 587static void RxReorderIndicatePacket(struct ieee80211_device *ieee,
588 struct ieee80211_rxb *prxb,
589 PRX_TS_RECORD pTS, u16 SeqNum)
8fc8598e
JC		 590{
591 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
35997ff0 592 PRX_REORDER_ENTRY pReorderEntry = NULL;
79a5ccd9 593 struct ieee80211_rxb **prxbIndicateArray;
8fc8598e
JC		 594 u8 WinSize = pHTInfo->RxReorderWinSize;
595 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
596 u8 index = 0;
597 bool bMatchWinStart = false, bPktInBuf = false;
f8628a47 598 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize);
79a5ccd9 599
6da2ec56
KC		 600 prxbIndicateArray = kmalloc_array(REORDER_WIN_SIZE,
601 sizeof(struct ieee80211_rxb *),
602 GFP_KERNEL);
79a5ccd9
OK		 603 if (!prxbIndicateArray)
604 return;
605
8fc8598e 606 /* Rx Reorder initialize condition.*/
dde48b99 607 if (pTS->RxIndicateSeq == 0xffff) {
8fc8598e
JC		 608 pTS->RxIndicateSeq = SeqNum;
609 }
610
611 /* Drop out the packet which SeqNum is smaller than WinStart */
dde48b99 612 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
8fc8598e
JC		 613 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
614 pTS->RxIndicateSeq, SeqNum);
615 pHTInfo->RxReorderDropCounter++;
616 {
617 int i;
618 for(i =0; i < prxb->nr_subframes; i++) {
619 dev_kfree_skb(prxb->subframes[i]);
620 }
621 kfree(prxb);
622 prxb = NULL;
623 }
79a5ccd9
OK		 624
625 kfree(prxbIndicateArray);
8fc8598e
JC		 626 return;
627 }
628
629 /*
630 * Sliding window manipulation. Conditions includes:
631 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
632 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
633 */
634 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
635 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
636 bMatchWinStart = true;
637 } else if(SN_LESS(WinEnd, SeqNum)) {
638 if(SeqNum >= (WinSize - 1)) {
639 pTS->RxIndicateSeq = SeqNum + 1 -WinSize;
640 } else {
641 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1;
642 }
643 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
644 }
645
646 /*
647 * Indication process.
648 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
649 * with the SeqNum smaller than latest WinStart and buffer other packets.
650 */
651 /* For Rx Reorder condition:
652 * 1. All packets with SeqNum smaller than WinStart => Indicate
653 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
654 */
655 if(bMatchWinStart) {
656 /* Current packet is going to be indicated.*/
657 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
658 pTS->RxIndicateSeq, SeqNum);
659 prxbIndicateArray[0] = prxb;
f8628a47 660// printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum);
8fc8598e
JC		 661 index = 1;
662 } else {
663 /* Current packet is going to be inserted into pending list.*/
f8628a47 664 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__);
8fc8598e
JC		 665 if(!list_empty(&ieee->RxReorder_Unused_List)) {
666 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List);
667 list_del_init(&pReorderEntry->List);
668
669 /* Make a reorder entry and insert into a the packet list.*/
670 pReorderEntry->SeqNum = SeqNum;
671 pReorderEntry->prxb = prxb;
f8628a47 672 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
8fc8598e 673
8fc8598e
JC		 674 if(!AddReorderEntry(pTS, pReorderEntry)) {
675 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
f8628a47 676 __func__, pTS->RxIndicateSeq, SeqNum);
8fc8598e
JC		 677 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
678 {
679 int i;
680 for(i =0; i < prxb->nr_subframes; i++) {
681 dev_kfree_skb(prxb->subframes[i]);
682 }
683 kfree(prxb);
684 prxb = NULL;
685 }
686 } else {
687 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
688 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
689 }
8fc8598e
JC		 690 }
691 else {
692 /*
693 * Packets are dropped if there is not enough reorder entries.
694 * This part shall be modified!! We can just indicate all the
695 * packets in buffer and get reorder entries.
696 */
697 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
698 {
699 int i;
700 for(i =0; i < prxb->nr_subframes; i++) {
701 dev_kfree_skb(prxb->subframes[i]);
702 }
703 kfree(prxb);
704 prxb = NULL;
705 }
706 }
707 }
708
709 /* Check if there is any packet need indicate.*/
710 while(!list_empty(&pTS->RxPendingPktList)) {
f8628a47 711 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
8fc8598e 712 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
d59d6f5d
GD		 713 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
714 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
8fc8598e
JC		 715 {
716 /* This protect buffer from overflow. */
dde48b99 717 if (index >= REORDER_WIN_SIZE) {
8fc8598e
JC		 718 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
719 bPktInBuf = true;
720 break;
721 }
722
723 list_del_init(&pReorderEntry->List);
724
725 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
726 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
727
728 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum);
729 prxbIndicateArray[index] = pReorderEntry->prxb;
f8628a47 730 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
8fc8598e
JC		 731 index++;
732
733 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
734 } else {
735 bPktInBuf = true;
736 break;
737 }
8fc8598e
JC		 738 }
739
740 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
dde48b99 741 if (index>0) {
8fc8598e
JC		 742 // Cancel previous pending timer.
743 // del_timer_sync(&pTS->RxPktPendingTimer);
744 pTS->RxTimeoutIndicateSeq = 0xffff;
745
746 // Indicate packets
747 if(index>REORDER_WIN_SIZE){
58493d8e 748 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
79a5ccd9 749 kfree(prxbIndicateArray);
8fc8598e
JC		 750 return;
751 }
752 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
753 }
754
dde48b99 755 if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
8fc8598e 756 // Set new pending timer.
f8628a47 757 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
8fc8598e
JC		 758 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
759 if(timer_pending(&pTS->RxPktPendingTimer))
760 del_timer_sync(&pTS->RxPktPendingTimer);
b1d96609
AKC		 761 pTS->RxPktPendingTimer.expires = jiffies +
762 msecs_to_jiffies(pHTInfo->RxReorderPendingTime);
8fc8598e
JC		 763 add_timer(&pTS->RxPktPendingTimer);
764 }
79a5ccd9
OK		 765
766 kfree(prxbIndicateArray);
8fc8598e
JC		 767}
768
4b10d50c
AR		 769static u8 parse_subframe(struct sk_buff *skb,
770 struct ieee80211_rx_stats *rx_stats,
0b4ef0a6 771 struct ieee80211_rxb *rxb, u8 *src, u8 *dst)
8fc8598e 772{
5c2918a5 773 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
8fc8598e
JC		 774 u16 fc = le16_to_cpu(hdr->frame_ctl);
775
5c2918a5 776 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr);
8fc8598e
JC		 777 u16 ChkLength;
778 bool bIsAggregateFrame = false;
779 u16 nSubframe_Length;
780 u8 nPadding_Length = 0;
781 u16 SeqNum=0;
782
783 struct sk_buff *sub_skb;
8fc8598e
JC		 784 /* just for debug purpose */
785 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
786
dde48b99 787 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
8fc8598e
JC		 788 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
789 bIsAggregateFrame = true;
790 }
791
dde48b99 792 if (IEEE80211_QOS_HAS_SEQ(fc)) {
8fc8598e
JC		 793 LLCOffset += 2;
794 }
795
dde48b99 796 if (rx_stats->bContainHTC) {
8fc8598e
JC		 797 LLCOffset += sHTCLng;
798 }
8fc8598e
JC		 799 // Null packet, don't indicate it to upper layer
800 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
801
d59d6f5d 802 if (skb->len <= ChkLength)
8fc8598e 803 return 0;
8fc8598e
JC		 804
805 skb_pull(skb, LLCOffset);
806
807 if(!bIsAggregateFrame) {
808 rxb->nr_subframes = 1;
809#ifdef JOHN_NOCPY
810 rxb->subframes[0] = skb;
811#else
812 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
813#endif
814
815 memcpy(rxb->src,src,ETH_ALEN);
816 memcpy(rxb->dst,dst,ETH_ALEN);
817 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
818 return 1;
819 } else {
820 rxb->nr_subframes = 0;
821 memcpy(rxb->src,src,ETH_ALEN);
822 memcpy(rxb->dst,dst,ETH_ALEN);
823 while(skb->len > ETHERNET_HEADER_SIZE) {
824 /* Offset 12 denote 2 mac address */
ea77527a 825 nSubframe_Length = *((u16 *)(skb->data + 12));
8fc8598e
JC		 826 //==m==>change the length order
827 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
828
dde48b99 829 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
8fc8598e 830 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
0b4ef0a6 831 __func__, rxb->nr_subframes);
f8628a47 832 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
8fc8598e
JC		 833 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
834 printk("The Packet SeqNum is %d\n",SeqNum);
835 return 0;
836 }
837
838 /* move the data point to data content */
839 skb_pull(skb, ETHERNET_HEADER_SIZE);
840
841#ifdef JOHN_NOCPY
842 sub_skb = skb_clone(skb, GFP_ATOMIC);
843 sub_skb->len = nSubframe_Length;
844 sub_skb->tail = sub_skb->data + nSubframe_Length;
845#else
846 /* Allocate new skb for releasing to upper layer */
847 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
79d99c30
VK		 848 if (!sub_skb)
849 return 0;
8fc8598e 850 skb_reserve(sub_skb, 12);
b952f4df 851 skb_put_data(sub_skb, skb->data, nSubframe_Length);
8fc8598e
JC		 852#endif
853 rxb->subframes[rxb->nr_subframes++] = sub_skb;
dde48b99 854 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
8fc8598e
JC		 855 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
856 break;
857 }
0b4ef0a6 858 skb_pull(skb, nSubframe_Length);
8fc8598e 859
dde48b99 860 if (skb->len != 0) {
8fc8598e 861 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
dde48b99 862 if (nPadding_Length == 4) {
8fc8598e
JC		 863 nPadding_Length = 0;
864 }
865
dde48b99 866 if (skb->len < nPadding_Length) {
8fc8598e
JC		 867 return 0;
868 }
869
0b4ef0a6 870 skb_pull(skb, nPadding_Length);
8fc8598e
JC		 871 }
872 }
873#ifdef JOHN_NOCPY
874 dev_kfree_skb(skb);
875#endif
876 //{just for debug added by david
877 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
878 //}
879 return rxb->nr_subframes;
880 }
881}
882
883/* All received frames are sent to this function. @skb contains the frame in
884 * IEEE 802.11 format, i.e., in the format it was sent over air.
885 * This function is called only as a tasklet (software IRQ). */
886int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
887 struct ieee80211_rx_stats *rx_stats)
888{
889 struct net_device *dev = ieee->dev;
5c2918a5
PG		 890 struct rtl_80211_hdr_4addr *hdr;
891 //struct rtl_80211_hdr_3addrqos *hdr;
8fc8598e
JC		 892
893 size_t hdrlen;
894 u16 fc, type, stype, sc;
895 struct net_device_stats *stats;
896 unsigned int frag;
897 u8 *payload;
898 u16 ethertype;
899 //added by amy for reorder
900 u8 TID = 0;
901 u16 SeqNum = 0;
902 PRX_TS_RECORD pTS = NULL;
903 //bool bIsAggregateFrame = false;
904 //added by amy for reorder
905#ifdef NOT_YET
906 struct net_device *wds = NULL;
8fc8598e 907 struct net_device *wds = NULL;
8fc8598e
JC		 908 int from_assoc_ap = 0;
909 void *sta = NULL;
910#endif
911// u16 qos_ctl = 0;
912 u8 dst[ETH_ALEN];
913 u8 src[ETH_ALEN];
914 u8 bssid[ETH_ALEN];
915 struct ieee80211_crypt_data *crypt = NULL;
916 int keyidx = 0;
917
918 int i;
ea77527a 919 struct ieee80211_rxb *rxb = NULL;
cd63eb0c 920 // cheat the hdr type
5c2918a5 921 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
8fc8598e
JC		 922 stats = &ieee->stats;
923
924 if (skb->len < 10) {
925 printk(KERN_INFO "%s: SKB length < 10\n",
926 dev->name);
927 goto rx_dropped;
928 }
929
930 fc = le16_to_cpu(hdr->frame_ctl);
931 type = WLAN_FC_GET_TYPE(fc);
932 stype = WLAN_FC_GET_STYPE(fc);
933 sc = le16_to_cpu(hdr->seq_ctl);
934
935 frag = WLAN_GET_SEQ_FRAG(sc);
936 hdrlen = ieee80211_get_hdrlen(fc);
937
dde48b99 938 if (HTCCheck(ieee, skb->data))
8fc8598e
JC		 939 {
940 if(net_ratelimit())
8ad835b9 941 printk("find HTCControl\n");
8fc8598e 942 hdrlen += 4;
19cd2297 943 rx_stats->bContainHTC = true;
8fc8598e
JC		 944 }
945
946 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
947#ifdef NOT_YET
8fc8598e
JC		 948 /* Put this code here so that we avoid duplicating it in all
949 * Rx paths. - Jean II */
950#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
951 /* If spy monitoring on */
952 if (iface->spy_data.spy_number > 0) {
953 struct iw_quality wstats;
954 wstats.level = rx_stats->rssi;
955 wstats.noise = rx_stats->noise;
956 wstats.updated = 6; /* No qual value */
957 /* Update spy records */
958 wireless_spy_update(dev, hdr->addr2, &wstats);
959 }
960#endif /* IW_WIRELESS_SPY */
8fc8598e
JC		 961 hostap_update_rx_stats(local->ap, hdr, rx_stats);
962#endif
963
8fc8598e
JC		 964 if (ieee->iw_mode == IW_MODE_MONITOR) {
965 ieee80211_monitor_rx(ieee, skb, rx_stats);
966 stats->rx_packets++;
967 stats->rx_bytes += skb->len;
968 return 1;
969 }
e6c1ef6c 970
8fc8598e
JC		 971 if (ieee->host_decrypt) {
972 int idx = 0;
973 if (skb->len >= hdrlen + 3)
974 idx = skb->data[hdrlen + 3] >> 6;
975 crypt = ieee->crypt[idx];
976#ifdef NOT_YET
977 sta = NULL;
978
979 /* Use station specific key to override default keys if the
980 * receiver address is a unicast address ("individual RA"). If
981 * bcrx_sta_key parameter is set, station specific key is used
982 * even with broad/multicast targets (this is against IEEE
983 * 802.11, but makes it easier to use different keys with
984 * stations that do not support WEP key mapping). */
985
986 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
987 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
988 &sta);
989#endif
990
991 /* allow NULL decrypt to indicate an station specific override
992 * for default encryption */
993 if (crypt && (crypt->ops == NULL ||
994 crypt->ops->decrypt_mpdu == NULL))
995 crypt = NULL;
996
997 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
998 /* This seems to be triggered by some (multicast?)
999 * frames from other than current BSS, so just drop the
1000 * frames silently instead of filling system log with
1001 * these reports. */
1002 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
0ee9f67c
JP		 1003 " (SA=%pM)\n",
1004 hdr->addr2);
8fc8598e
JC		 1005 ieee->ieee_stats.rx_discards_undecryptable++;
1006 goto rx_dropped;
1007 }
1008 }
1009
1010 if (skb->len < IEEE80211_DATA_HDR3_LEN)
1011 goto rx_dropped;
1012
1013 // if QoS enabled, should check the sequence for each of the AC
f9bd549a 1014 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
8fc8598e
JC		 1015 if (is_duplicate_packet(ieee, hdr))
1016 goto rx_dropped;
1017
1018 }
1019 else
1020 {
1021 PRX_TS_RECORD pRxTS = NULL;
f8628a47 1022 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid);
8fc8598e
JC		 1023 if(GetTs(
1024 ieee,
ea77527a 1025 (PTS_COMMON_INFO *) &pRxTS,
8fc8598e 1026 hdr->addr2,
efdcb35a 1027 Frame_QoSTID((u8 *)(skb->data)),
8fc8598e
JC		 1028 RX_DIR,
1029 true))
1030 {
1031
f8628a47 1032 // 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));
d59d6f5d
GD		 1033 if ((fc & (1<<11)) &&
1034 (frag == pRxTS->RxLastFragNum) &&
1035 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
8fc8598e
JC		 1036 goto rx_dropped;
1037 }
1038 else
1039 {
1040 pRxTS->RxLastFragNum = frag;
1041 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
1042 }
1043 }
1044 else
1045 {
f8628a47 1046 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
8fc8598e
JC		 1047 goto rx_dropped;
1048 }
1049 }
8fc8598e
JC		 1050 if (type == IEEE80211_FTYPE_MGMT) {
1051
8fc8598e
JC		 1052
1053 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1054 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1055 goto rx_dropped;
1056 else
1057 goto rx_exit;
1058 }
1059
1060 /* Data frame - extract src/dst addresses */
1061 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1062 case IEEE80211_FCTL_FROMDS:
1063 memcpy(dst, hdr->addr1, ETH_ALEN);
1064 memcpy(src, hdr->addr3, ETH_ALEN);
1065 memcpy(bssid, hdr->addr2, ETH_ALEN);
1066 break;
1067 case IEEE80211_FCTL_TODS:
1068 memcpy(dst, hdr->addr3, ETH_ALEN);
1069 memcpy(src, hdr->addr2, ETH_ALEN);
1070 memcpy(bssid, hdr->addr1, ETH_ALEN);
1071 break;
1072 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1073 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1074 goto rx_dropped;
1075 memcpy(dst, hdr->addr3, ETH_ALEN);
1076 memcpy(src, hdr->addr4, ETH_ALEN);
1077 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1078 break;
5d43dfdb 1079 default:
8fc8598e
JC		 1080 memcpy(dst, hdr->addr1, ETH_ALEN);
1081 memcpy(src, hdr->addr2, ETH_ALEN);
1082 memcpy(bssid, hdr->addr3, ETH_ALEN);
1083 break;
1084 }
1085
1086#ifdef NOT_YET
1087 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1088 goto rx_dropped;
1089 if (wds) {
1090 skb->dev = dev = wds;
1091 stats = hostap_get_stats(dev);
1092 }
1093
1094 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1095 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1096 ieee->stadev &&
1097 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1098 /* Frame from BSSID of the AP for which we are a client */
1099 skb->dev = dev = ieee->stadev;
1100 stats = hostap_get_stats(dev);
1101 from_assoc_ap = 1;
1102 }
8fc8598e 1103
8fc8598e
JC		 1104 if ((ieee->iw_mode == IW_MODE_MASTER ||
1105 ieee->iw_mode == IW_MODE_REPEAT) &&
1106 !from_assoc_ap) {
1107 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1108 wds != NULL)) {
1109 case AP_RX_CONTINUE_NOT_AUTHORIZED:
8fc8598e 1110 case AP_RX_CONTINUE:
8fc8598e
JC		 1111 break;
1112 case AP_RX_DROP:
1113 goto rx_dropped;
1114 case AP_RX_EXIT:
1115 goto rx_exit;
1116 }
1117 }
1118#endif
1119 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1120 /* Nullfunc frames may have PS-bit set, so they must be passed to
1121 * hostap_handle_sta_rx() before being dropped here. */
1122 if (stype != IEEE80211_STYPE_DATA &&
1123 stype != IEEE80211_STYPE_DATA_CFACK &&
1124 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1125 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1126 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1127 ) {
1128 if (stype != IEEE80211_STYPE_NULLFUNC)
1129 IEEE80211_DEBUG_DROP(
1130 "RX: dropped data frame "
1131 "with no data (type=0x%02x, "
1132 "subtype=0x%02x, len=%d)\n",
1133 type, stype, skb->len);
1134 goto rx_dropped;
1135 }
fdc64a9e
SH		 1136 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1137 goto rx_dropped;
8fc8598e
JC		 1138
1139 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1140
1141 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1142 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1143 {
1144 printk("decrypt frame error\n");
1145 goto rx_dropped;
1146 }
1147
1148
5c2918a5 1149 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1150
1151 /* skb: hdr + (possibly fragmented) plaintext payload */
1152 // PR: FIXME: hostap has additional conditions in the "if" below:
1153 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1154 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1155 int flen;
1156 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1157 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1158
1159 if (!frag_skb) {
1160 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1161 "Rx cannot get skb from fragment "
1162 "cache (morefrag=%d seq=%u frag=%u)\n",
1163 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1164 WLAN_GET_SEQ_SEQ(sc), frag);
1165 goto rx_dropped;
1166 }
1167 flen = skb->len;
1168 if (frag != 0)
1169 flen -= hdrlen;
1170
1171 if (frag_skb->tail + flen > frag_skb->end) {
1172 printk(KERN_WARNING "%s: host decrypted and "
1173 "reassembled frame did not fit skb\n",
1174 dev->name);
1175 ieee80211_frag_cache_invalidate(ieee, hdr);
1176 goto rx_dropped;
1177 }
1178
1179 if (frag == 0) {
1180 /* copy first fragment (including full headers) into
1181 * beginning of the fragment cache skb */
59ae1d12 1182 skb_put_data(frag_skb, skb->data, flen);
8fc8598e
JC		 1183 } else {
1184 /* append frame payload to the end of the fragment
1185 * cache skb */
59ae1d12 1186 skb_put_data(frag_skb, skb->data + hdrlen, flen);
8fc8598e
JC		 1187 }
1188 dev_kfree_skb_any(skb);
1189 skb = NULL;
1190
1191 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1192 /* more fragments expected - leave the skb in fragment
1193 * cache for now; it will be delivered to upper layers
1194 * after all fragments have been received */
1195 goto rx_exit;
1196 }
1197
1198 /* this was the last fragment and the frame will be
1199 * delivered, so remove skb from fragment cache */
1200 skb = frag_skb;
5c2918a5 1201 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1202 ieee80211_frag_cache_invalidate(ieee, hdr);
1203 }
1204
1205 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1206 * encrypted/authenticated */
1207 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1208 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1209 {
1210 printk("==>decrypt msdu error\n");
1211 goto rx_dropped;
1212 }
1213
1214 //added by amy for AP roaming
1215 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1216 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1217
5c2918a5 1218 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1219 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1220 if (/*ieee->ieee802_1x &&*/
1221 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1222
1223#ifdef CONFIG_IEEE80211_DEBUG
1224 /* pass unencrypted EAPOL frames even if encryption is
1225 * configured */
1226 struct eapol *eap = (struct eapol *)(skb->data +
1227 24);
1228 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1229 eap_get_type(eap->type));
1230#endif
1231 } else {
1232 IEEE80211_DEBUG_DROP(
1233 "encryption configured, but RX "
0ee9f67c
JP		 1234 "frame not encrypted (SA=%pM)\n",
1235 hdr->addr2);
8fc8598e
JC		 1236 goto rx_dropped;
1237 }
1238 }
1239
1240#ifdef CONFIG_IEEE80211_DEBUG
1241 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1242 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1243 struct eapol *eap = (struct eapol *)(skb->data +
1244 24);
1245 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1246 eap_get_type(eap->type));
1247 }
1248#endif
1249
1250 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1251 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1252 IEEE80211_DEBUG_DROP(
1253 "dropped unencrypted RX data "
0ee9f67c 1254 "frame from %pM"
8fc8598e 1255 " (drop_unencrypted=1)\n",
0ee9f67c 1256 hdr->addr2);
8fc8598e
JC		 1257 goto rx_dropped;
1258 }
1259/*
1260 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1261 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1262 }
1263*/
1264//added by amy for reorder
dde48b99 1265 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
14fc4235 1266 && !is_multicast_ether_addr(hdr->addr1))
8fc8598e
JC		 1267 {
1268 TID = Frame_QoSTID(skb->data);
1269 SeqNum = WLAN_GET_SEQ_SEQ(sc);
ea77527a 1270 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true);
dde48b99 1271 if (TID !=0 && TID !=3)
8fc8598e
JC		 1272 {
1273 ieee->bis_any_nonbepkts = true;
1274 }
1275 }
8fc8598e
JC		 1276//added by amy for reorder
1277 /* skb: hdr + (possible reassembled) full plaintext payload */
1278 payload = skb->data + hdrlen;
1279 //ethertype = (payload[6] << 8) | payload[7];
32414878 1280 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
61645cc3 1281 if (!rxb)
8fc8598e 1282 goto rx_dropped;
8fc8598e
JC		 1283 /* to parse amsdu packets */
1284 /* qos data packets & reserved bit is 1 */
0b4ef0a6 1285 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
8fc8598e
JC		 1286 /* only to free rxb, and not submit the packets to upper layer */
1287 for(i =0; i < rxb->nr_subframes; i++) {
1288 dev_kfree_skb(rxb->subframes[i]);
1289 }
1290 kfree(rxb);
1291 rxb = NULL;
1292 goto rx_dropped;
1293 }
1294
1295//added by amy for reorder
f9bd549a 1296 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){
8fc8598e
JC		 1297//added by amy for reorder
1298 for(i = 0; i<rxb->nr_subframes; i++) {
1299 struct sk_buff *sub_skb = rxb->subframes[i];
1300
1301 if (sub_skb) {
1302 /* convert hdr + possible LLC headers into Ethernet header */
1303 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1304 if (sub_skb->len >= 8 &&
1305 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1306 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1307 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1308 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1309 * replace EtherType */
1310 skb_pull(sub_skb, SNAP_SIZE);
1311 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1312 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1313 } else {
1314 u16 len;
1315 /* Leave Ethernet header part of hdr and full payload */
86d7726d 1316 len = be16_to_cpu(htons(sub_skb->len));
8fc8598e
JC		 1317 memcpy(skb_push(sub_skb, 2), &len, 2);
1318 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1319 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1320 }
1321
1322 stats->rx_packets++;
1323 stats->rx_bytes += sub_skb->len;
dde48b99 1324 if (is_multicast_ether_addr(dst)) {
8fc8598e
JC		 1325 stats->multicast++;
1326 }
1327
1328 /* Indicat the packets to upper layer */
8fc8598e
JC		 1329 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1330 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1331 sub_skb->dev = dev;
1332 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1333 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1334 ieee->last_rx_ps_time = jiffies;
8fc8598e
JC		 1335 netif_rx(sub_skb);
1336 }
1337 }
1338 kfree(rxb);
1339 rxb = NULL;
1340
1341 }
1342 else
1343 {
f8628a47 1344 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
8fc8598e
JC		 1345 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1346 }
1347#ifndef JOHN_NOCPY
1348 dev_kfree_skb(skb);
1349#endif
1350
1351 rx_exit:
1352#ifdef NOT_YET
1353 if (sta)
1354 hostap_handle_sta_release(sta);
1355#endif
1356 return 1;
1357
1358 rx_dropped:
e72714fb
IM		 1359 kfree(rxb);
1360 rxb = NULL;
8fc8598e
JC		 1361 stats->rx_dropped++;
1362
1363 /* Returning 0 indicates to caller that we have not handled the SKB--
1364 * so it is still allocated and can be used again by underlying
1365 * hardware as a DMA target */
1366 return 0;
1367}
539b4f72 1368EXPORT_SYMBOL(ieee80211_rx);
8fc8598e
JC		 1369
1370#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1371
1372static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1373
1374/*
25985edc 1375* Make the structure we read from the beacon packet to have
8fc8598e
JC		 1376* the right values
1377*/
1378static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
fdc64a9e 1379 *info_element, int sub_type)
8fc8598e
JC		 1380{
1381
fdc64a9e
SH		 1382 if (info_element->qui_subtype != sub_type)
1383 return -1;
1384 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1385 return -1;
1386 if (info_element->qui_type != QOS_OUI_TYPE)
1387 return -1;
1388 if (info_element->version != QOS_VERSION_1)
1389 return -1;
8fc8598e 1390
fdc64a9e 1391 return 0;
8fc8598e
JC		 1392}
1393
1394
1395/*
1396 * Parse a QoS parameter element
1397 */
1398static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
fdc64a9e
SH		 1399 *element_param, struct ieee80211_info_element
1400 *info_element)
8fc8598e 1401{
fdc64a9e
SH		 1402 int ret = 0;
1403 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1404
1405 if ((info_element == NULL) || (element_param == NULL))
1406 return -1;
1407
1408 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1409 memcpy(element_param->info_element.qui, info_element->data,
1410 info_element->len);
1411 element_param->info_element.elementID = info_element->id;
1412 element_param->info_element.length = info_element->len;
1413 } else
1414 ret = -1;
1415 if (ret == 0)
1416 ret = ieee80211_verify_qos_info(&element_param->info_element,
1417 QOS_OUI_PARAM_SUB_TYPE);
1418 return ret;
8fc8598e
JC		 1419}
1420
1421/*
1422 * Parse a QoS information element
1423 */
1424static int ieee80211_read_qos_info_element(struct
fdc64a9e
SH		 1425 ieee80211_qos_information_element
1426 *element_info, struct ieee80211_info_element
1427 *info_element)
8fc8598e 1428{
fdc64a9e
SH		 1429 int ret = 0;
1430 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1431
1432 if (element_info == NULL)
1433 return -1;
1434 if (info_element == NULL)
1435 return -1;
1436
1437 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1438 memcpy(element_info->qui, info_element->data,
1439 info_element->len);
1440 element_info->elementID = info_element->id;
1441 element_info->length = info_element->len;
1442 } else
1443 ret = -1;
1444
1445 if (ret == 0)
1446 ret = ieee80211_verify_qos_info(element_info,
1447 QOS_OUI_INFO_SUB_TYPE);
1448 return ret;
8fc8598e
JC		 1449}
1450
1451
1452/*
1453 * Write QoS parameters from the ac parameters.
1454 */
1455static int ieee80211_qos_convert_ac_to_parameters(struct
fdc64a9e
SH		 1456 ieee80211_qos_parameter_info
1457 *param_elm, struct
1458 ieee80211_qos_parameters
1459 *qos_param)
8fc8598e 1460{
fdc64a9e
SH		 1461 int i;
1462 struct ieee80211_qos_ac_parameter *ac_params;
8fc8598e 1463 u8 aci;
fdc64a9e
SH		 1464 //u8 cw_min;
1465 //u8 cw_max;
8fc8598e 1466
fdc64a9e
SH		 1467 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1468 ac_params = &(param_elm->ac_params_record[i]);
8fc8598e
JC		 1469
1470 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1471
1472 if(aci >= QOS_QUEUE_NUM)
1473 continue;
fdc64a9e 1474 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
8fc8598e
JC		 1475
1476 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
fdc64a9e 1477 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
8fc8598e 1478
86d7726d
JJ		 1479 qos_param->cw_min[aci] =
1480 cpu_to_le16(ac_params->ecw_min_max & 0x0F);
8fc8598e 1481
86d7726d
JJ		 1482 qos_param->cw_max[aci] =
1483 cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4);
8fc8598e 1484
fdc64a9e
SH		 1485 qos_param->flag[aci] =
1486 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
86d7726d 1487 qos_param->tx_op_limit[aci] = ac_params->tx_op_limit;
fdc64a9e 1488 }
4764ca98 1489 return 0;
8fc8598e
JC		 1490}
1491
1492/*
1493 * we have a generic data element which it may contain QoS information or
1494 * parameters element. check the information element length to decide
1495 * which type to read
1496 */
1497static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
fdc64a9e
SH		 1498 *info_element,
1499 struct ieee80211_network *network)
8fc8598e 1500{
fdc64a9e
SH		 1501 int rc = 0;
1502 struct ieee80211_qos_parameters *qos_param = NULL;
1503 struct ieee80211_qos_information_element qos_info_element;
1504
1505 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1506
1507 if (rc == 0) {
1508 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1509 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1510 } else {
1511 struct ieee80211_qos_parameter_info param_element;
1512
1513 rc = ieee80211_read_qos_param_element(&param_element,
1514 info_element);
1515 if (rc == 0) {
1516 qos_param = &(network->qos_data.parameters);
1517 ieee80211_qos_convert_ac_to_parameters(&param_element,
1518 qos_param);
1519 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1520 network->qos_data.param_count =
1521 param_element.info_element.ac_info & 0x0F;
1522 }
1523 }
1524
1525 if (rc == 0) {
1526 IEEE80211_DEBUG_QOS("QoS is supported\n");
1527 network->qos_data.supported = 1;
1528 }
1529 return rc;
8fc8598e
JC		 1530}
1531
1532#ifdef CONFIG_IEEE80211_DEBUG
1533#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1534
1535static const char *get_info_element_string(u16 id)
1536{
fdc64a9e
SH		 1537 switch (id) {
1538 MFIE_STRING(SSID);
1539 MFIE_STRING(RATES);
1540 MFIE_STRING(FH_SET);
1541 MFIE_STRING(DS_SET);
1542 MFIE_STRING(CF_SET);
1543 MFIE_STRING(TIM);
1544 MFIE_STRING(IBSS_SET);
1545 MFIE_STRING(COUNTRY);
1546 MFIE_STRING(HOP_PARAMS);
1547 MFIE_STRING(HOP_TABLE);
1548 MFIE_STRING(REQUEST);
1549 MFIE_STRING(CHALLENGE);
1550 MFIE_STRING(POWER_CONSTRAINT);
1551 MFIE_STRING(POWER_CAPABILITY);
1552 MFIE_STRING(TPC_REQUEST);
1553 MFIE_STRING(TPC_REPORT);
1554 MFIE_STRING(SUPP_CHANNELS);
1555 MFIE_STRING(CSA);
1556 MFIE_STRING(MEASURE_REQUEST);
1557 MFIE_STRING(MEASURE_REPORT);
1558 MFIE_STRING(QUIET);
1559 MFIE_STRING(IBSS_DFS);
1560 // MFIE_STRING(ERP_INFO);
1561 MFIE_STRING(RSN);
1562 MFIE_STRING(RATES_EX);
1563 MFIE_STRING(GENERIC);
1564 MFIE_STRING(QOS_PARAMETER);
1565 default:
1566 return "UNKNOWN";
1567 }
8fc8598e
JC		 1568}
1569#endif
1570
8fc8598e
JC		 1571static inline void ieee80211_extract_country_ie(
1572 struct ieee80211_device *ieee,
1573 struct ieee80211_info_element *info_element,
1574 struct ieee80211_network *network,
ea77527a 1575 u8 *addr2
8fc8598e
JC		 1576)
1577{
dde48b99 1578 if (IS_DOT11D_ENABLE(ieee))
8fc8598e 1579 {
dde48b99 1580 if (info_element->len!= 0)
8fc8598e
JC		 1581 {
1582 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1583 network->CountryIeLen = info_element->len;
1584
dde48b99 1585 if (!IS_COUNTRY_IE_VALID(ieee))
8fc8598e
JC		 1586 {
1587 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1588 }
1589 }
1590
1591 //
1592 // 070305, rcnjko: I update country IE watch dog here because
1593 // some AP (e.g. Cisco 1242) don't include country IE in their
1594 // probe response frame.
1595 //
dde48b99 1596 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
8fc8598e
JC		 1597 {
1598 UPDATE_CIE_WATCHDOG(ieee);
1599 }
1600 }
1601
1602}
8fc8598e
JC		 1603
1604int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1605 struct ieee80211_info_element *info_element,
1606 u16 length,
1607 struct ieee80211_network *network,
1608 struct ieee80211_rx_stats *stats)
1609{
1610 u8 i;
1611 short offset;
fdc64a9e 1612 u16 tmp_htcap_len=0;
8fc8598e
JC		 1613 u16 tmp_htinfo_len=0;
1614 u16 ht_realtek_agg_len=0;
1615 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1616// u16 broadcom_len = 0;
1617#ifdef CONFIG_IEEE80211_DEBUG
1618 char rates_str[64];
1619 char *p;
1620#endif
1621
1622 while (length >= sizeof(*info_element)) {
1623 if (sizeof(*info_element) + info_element->len > length) {
1624 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1625 "info_element->len + 2 > left : "
1626 "info_element->len+2=%zd left=%d, id=%d.\n",
1627 info_element->len +
1628 sizeof(*info_element),
1629 length, info_element->id);
1630 /* We stop processing but don't return an error here
1631 * because some misbehaviour APs break this rule. ie.
1632 * Orinoco AP1000. */
1633 break;
1634 }
1635
1636 switch (info_element->id) {
1637 case MFIE_TYPE_SSID:
1638 if (ieee80211_is_empty_essid(info_element->data,
1639 info_element->len)) {
1640 network->flags |= NETWORK_EMPTY_ESSID;
1641 break;
1642 }
1643
1644 network->ssid_len = min(info_element->len,
1645 (u8) IW_ESSID_MAX_SIZE);
1646 memcpy(network->ssid, info_element->data, network->ssid_len);
1647 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1648 memset(network->ssid + network->ssid_len, 0,
1649 IW_ESSID_MAX_SIZE - network->ssid_len);
1650
1651 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1652 network->ssid, network->ssid_len);
1653 break;
1654
1655 case MFIE_TYPE_RATES:
1656#ifdef CONFIG_IEEE80211_DEBUG
1657 p = rates_str;
1658#endif
1659 network->rates_len = min(info_element->len,
1660 MAX_RATES_LENGTH);
1661 for (i = 0; i < network->rates_len; i++) {
1662 network->rates[i] = info_element->data[i];
1663#ifdef CONFIG_IEEE80211_DEBUG
1664 p += snprintf(p, sizeof(rates_str) -
1665 (p - rates_str), "%02X ",
1666 network->rates[i]);
1667#endif
1668 if (ieee80211_is_ofdm_rate
1669 (info_element->data[i])) {
1670 network->flags |= NETWORK_HAS_OFDM;
1671 if (info_element->data[i] &
1672 IEEE80211_BASIC_RATE_MASK)
1673 network->flags &=
1674 ~NETWORK_HAS_CCK;
1675 }
1676 }
1677
1678 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1679 rates_str, network->rates_len);
1680 break;
1681
1682 case MFIE_TYPE_RATES_EX:
1683#ifdef CONFIG_IEEE80211_DEBUG
1684 p = rates_str;
1685#endif
1686 network->rates_ex_len = min(info_element->len,
1687 MAX_RATES_EX_LENGTH);
1688 for (i = 0; i < network->rates_ex_len; i++) {
1689 network->rates_ex[i] = info_element->data[i];
1690#ifdef CONFIG_IEEE80211_DEBUG
1691 p += snprintf(p, sizeof(rates_str) -
1692 (p - rates_str), "%02X ",
c4151700 1693 network->rates_ex[i]);
8fc8598e
JC		 1694#endif
1695 if (ieee80211_is_ofdm_rate
1696 (info_element->data[i])) {
1697 network->flags |= NETWORK_HAS_OFDM;
1698 if (info_element->data[i] &
1699 IEEE80211_BASIC_RATE_MASK)
1700 network->flags &=
1701 ~NETWORK_HAS_CCK;
1702 }
1703 }
1704
1705 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1706 rates_str, network->rates_ex_len);
1707 break;
1708
1709 case MFIE_TYPE_DS_SET:
1710 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1711 info_element->data[0]);
1712 network->channel = info_element->data[0];
1713 break;
1714
1715 case MFIE_TYPE_FH_SET:
1716 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1717 break;
1718
1719 case MFIE_TYPE_CF_SET:
1720 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1721 break;
1722
1723 case MFIE_TYPE_TIM:
1724 if(info_element->len < 4)
1725 break;
1726
1727 network->tim.tim_count = info_element->data[0];
1728 network->tim.tim_period = info_element->data[1];
1729
fdc64a9e
SH		 1730 network->dtim_period = info_element->data[1];
1731 if(ieee->state != IEEE80211_LINKED)
1732 break;
8fc8598e 1733
fdc64a9e
SH		 1734 network->last_dtim_sta_time[0] = stats->mac_time[0];
1735 network->last_dtim_sta_time[1] = stats->mac_time[1];
8fc8598e 1736
fdc64a9e 1737 network->dtim_data = IEEE80211_DTIM_VALID;
8fc8598e 1738
fdc64a9e
SH		 1739 if(info_element->data[0] != 0)
1740 break;
8fc8598e 1741
fdc64a9e
SH		 1742 if(info_element->data[2] & 1)
1743 network->dtim_data |= IEEE80211_DTIM_MBCAST;
8fc8598e 1744
fdc64a9e 1745 offset = (info_element->data[2] >> 1)*2;
8fc8598e 1746
fdc64a9e
SH		 1747 if(ieee->assoc_id < 8*offset ||
1748 ieee->assoc_id > 8*(offset + info_element->len -3))
8fc8598e 1749
fdc64a9e 1750 break;
8fc8598e 1751
fdc64a9e 1752 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
8fc8598e 1753
fdc64a9e
SH		 1754 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1755 network->dtim_data |= IEEE80211_DTIM_UCAST;
8fc8598e
JC		 1756
1757 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1758 break;
1759
1760 case MFIE_TYPE_ERP:
1761 network->erp_value = info_element->data[0];
1762 network->flags |= NETWORK_HAS_ERP_VALUE;
1763 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1764 network->erp_value);
1765 break;
1766 case MFIE_TYPE_IBSS_SET:
1767 network->atim_window = info_element->data[0];
1768 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1769 network->atim_window);
1770 break;
1771
1772 case MFIE_TYPE_CHALLENGE:
1773 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1774 break;
1775
1776 case MFIE_TYPE_GENERIC:
1777 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1778 info_element->len);
1779 if (!ieee80211_parse_qos_info_param_IE(info_element,
1780 network))
1781 break;
1782
1783 if (info_element->len >= 4 &&
1784 info_element->data[0] == 0x00 &&
1785 info_element->data[1] == 0x50 &&
1786 info_element->data[2] == 0xf2 &&
1787 info_element->data[3] == 0x01) {
1788 network->wpa_ie_len = min(info_element->len + 2,
1789 MAX_WPA_IE_LEN);
1790 memcpy(network->wpa_ie, info_element,
1791 network->wpa_ie_len);
1792 break;
1793 }
1794
1795#ifdef THOMAS_TURBO
fdc64a9e
SH		 1796 if (info_element->len == 7 &&
1797 info_element->data[0] == 0x00 &&
1798 info_element->data[1] == 0xe0 &&
1799 info_element->data[2] == 0x4c &&
1800 info_element->data[3] == 0x01 &&
1801 info_element->data[4] == 0x02) {
1802 network->Turbo_Enable = 1;
1803 }
8fc8598e
JC		 1804#endif
1805
fdc64a9e 1806 //for HTcap and HTinfo parameters
8fc8598e
JC		 1807 if(tmp_htcap_len == 0){
1808 if(info_element->len >= 4 &&
1809 info_element->data[0] == 0x00 &&
1810 info_element->data[1] == 0x90 &&
1811 info_element->data[2] == 0x4c &&
1812 info_element->data[3] == 0x033){
1813
1814 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
35997ff0
SH		 1815 if(tmp_htcap_len != 0){
1816 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
8fc8598e
JC		 1817 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1818 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1819 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
35997ff0 1820 }
8fc8598e
JC		 1821 }
1822 if(tmp_htcap_len != 0)
1823 network->bssht.bdSupportHT = true;
1824 else
1825 network->bssht.bdSupportHT = false;
1826 }
1827
1828
1829 if(tmp_htinfo_len == 0){
1830 if(info_element->len >= 4 &&
1831 info_element->data[0] == 0x00 &&
35997ff0
SH		 1832 info_element->data[1] == 0x90 &&
1833 info_element->data[2] == 0x4c &&
1834 info_element->data[3] == 0x034){
8fc8598e
JC		 1835
1836 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1837 if(tmp_htinfo_len != 0){
1838 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1839 if(tmp_htinfo_len){
1840 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1841 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1842 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1843 }
1844
1845 }
1846
1847 }
1848 }
1849
1850 if(ieee->aggregation){
1851 if(network->bssht.bdSupportHT){
1852 if(info_element->len >= 4 &&
1853 info_element->data[0] == 0x00 &&
1854 info_element->data[1] == 0xe0 &&
1855 info_element->data[2] == 0x4c &&
1856 info_element->data[3] == 0x02){
1857
1858 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1859 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1860
1861 }
1862 if(ht_realtek_agg_len >= 5){
1863 network->bssht.bdRT2RTAggregation = true;
1864
1865 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1866 network->bssht.bdRT2RTLongSlotTime = true;
1867 }
1868 }
1869
1870 }
1871
1872 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1873 {
dde48b99 1874 if ((info_element->len >= 3 &&
8fc8598e
JC		 1875 info_element->data[0] == 0x00 &&
1876 info_element->data[1] == 0x05 &&
1877 info_element->data[2] == 0xb5) ||
1878 (info_element->len >= 3 &&
1879 info_element->data[0] == 0x00 &&
1880 info_element->data[1] == 0x0a &&
1881 info_element->data[2] == 0xf7) ||
1882 (info_element->len >= 3 &&
1883 info_element->data[0] == 0x00 &&
1884 info_element->data[1] == 0x10 &&
1885 info_element->data[2] == 0x18)){
1886
1887 network->broadcom_cap_exist = true;
1888
1889 }
1890 }
8fc8598e
JC		 1891 if(info_element->len >= 3 &&
1892 info_element->data[0] == 0x00 &&
1893 info_element->data[1] == 0x0c &&
1894 info_element->data[2] == 0x43)
1895 {
1896 network->ralink_cap_exist = true;
1897 }
1898 else
1899 network->ralink_cap_exist = false;
1900 //added by amy for atheros AP
1901 if((info_element->len >= 3 &&
1902 info_element->data[0] == 0x00 &&
1903 info_element->data[1] == 0x03 &&
1904 info_element->data[2] == 0x7f) ||
1905 (info_element->len >= 3 &&
1906 info_element->data[0] == 0x00 &&
1907 info_element->data[1] == 0x13 &&
1908 info_element->data[2] == 0x74))
1909 {
f8628a47 1910 printk("========>%s(): athros AP is exist\n",__func__);
8fc8598e
JC		 1911 network->atheros_cap_exist = true;
1912 }
1913 else
1914 network->atheros_cap_exist = false;
1915
1916 if(info_element->len >= 3 &&
1917 info_element->data[0] == 0x00 &&
1918 info_element->data[1] == 0x40 &&
1919 info_element->data[2] == 0x96)
1920 {
1921 network->cisco_cap_exist = true;
1922 }
1923 else
1924 network->cisco_cap_exist = false;
1925 //added by amy for LEAP of cisco
dde48b99 1926 if (info_element->len > 4 &&
8fc8598e
JC		 1927 info_element->data[0] == 0x00 &&
1928 info_element->data[1] == 0x40 &&
1929 info_element->data[2] == 0x96 &&
1930 info_element->data[3] == 0x01)
1931 {
1932 if(info_element->len == 6)
1933 {
1934 memcpy(network->CcxRmState, &info_element[4], 2);
1935 if(network->CcxRmState[0] != 0)
1936 {
1937 network->bCcxRmEnable = true;
1938 }
1939 else
1940 network->bCcxRmEnable = false;
1941 //
1942 // CCXv4 Table 59-1 MBSSID Masks.
1943 //
1944 network->MBssidMask = network->CcxRmState[1] & 0x07;
1945 if(network->MBssidMask != 0)
1946 {
1947 network->bMBssidValid = true;
1948 network->MBssidMask = 0xff << (network->MBssidMask);
1949 cpMacAddr(network->MBssid, network->bssid);
1950 network->MBssid[5] &= network->MBssidMask;
1951 }
1952 else
1953 {
1954 network->bMBssidValid = false;
1955 }
1956 }
1957 else
1958 {
1959 network->bCcxRmEnable = false;
1960 }
1961 }
dde48b99 1962 if (info_element->len > 4 &&
8fc8598e
JC		 1963 info_element->data[0] == 0x00 &&
1964 info_element->data[1] == 0x40 &&
1965 info_element->data[2] == 0x96 &&
1966 info_element->data[3] == 0x03)
1967 {
1968 if(info_element->len == 5)
1969 {
1970 network->bWithCcxVerNum = true;
1971 network->BssCcxVerNumber = info_element->data[4];
1972 }
1973 else
1974 {
1975 network->bWithCcxVerNum = false;
1976 network->BssCcxVerNumber = 0;
1977 }
1978 }
1979 break;
1980
1981 case MFIE_TYPE_RSN:
1982 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1983 info_element->len);
1984 network->rsn_ie_len = min(info_element->len + 2,
1985 MAX_WPA_IE_LEN);
1986 memcpy(network->rsn_ie, info_element,
1987 network->rsn_ie_len);
1988 break;
1989
fdc64a9e 1990 //HT related element.
8fc8598e
JC		 1991 case MFIE_TYPE_HT_CAP:
1992 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1993 info_element->len);
1994 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1995 if(tmp_htcap_len != 0){
1996 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1997 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1998 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1999 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
2000
2001 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2002 // windows driver will update WMM parameters each beacon received once connected
fdc64a9e 2003 // Linux driver is a bit different.
8fc8598e
JC		 2004 network->bssht.bdSupportHT = true;
2005 }
2006 else
2007 network->bssht.bdSupportHT = false;
2008 break;
2009
2010
2011 case MFIE_TYPE_HT_INFO:
2012 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2013 info_element->len);
2014 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2015 if(tmp_htinfo_len){
2016 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2017 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2018 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2019 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2020 }
2021 break;
2022
2023 case MFIE_TYPE_AIRONET:
2024 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2025 info_element->len);
2026 if(info_element->len >IE_CISCO_FLAG_POSITION)
2027 {
2028 network->bWithAironetIE = true;
2029
2030 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2031 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2032 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2033 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2034 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2035 {
35997ff0 2036 network->bCkipSupported = true;
8fc8598e
JC		 2037 }
2038 else
2039 {
2040 network->bCkipSupported = false;
2041 }
2042 }
2043 else
2044 {
2045 network->bWithAironetIE = false;
35997ff0 2046 network->bCkipSupported = false;
8fc8598e
JC		 2047 }
2048 break;
2049 case MFIE_TYPE_QOS_PARAMETER:
2050 printk(KERN_ERR
2051 "QoS Error need to parse QOS_PARAMETER IE\n");
2052 break;
2053
8fc8598e
JC		 2054 case MFIE_TYPE_COUNTRY:
2055 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2056 info_element->len);
8fc8598e
JC		 2057 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2058 break;
8fc8598e 2059/* TODO */
8fc8598e
JC		 2060 default:
2061 IEEE80211_DEBUG_MGMT
2062 ("Unsupported info element: %s (%d)\n",
2063 get_info_element_string(info_element->id),
2064 info_element->id);
2065 break;
2066 }
2067
2068 length -= sizeof(*info_element) + info_element->len;
2069 info_element =
2070 (struct ieee80211_info_element *)&info_element->
2071 data[info_element->len];
2072 }
2073
2074 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2075 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2076 {
2077 network->unknown_cap_exist = true;
2078 }
2079 else
2080 {
2081 network->unknown_cap_exist = false;
2082 }
2083 return 0;
2084}
2085
2086static inline u8 ieee80211_SignalStrengthTranslate(
2087 u8 CurrSS
2088 )
2089{
2090 u8 RetSS;
2091
2092 // Step 1. Scale mapping.
2093 if(CurrSS >= 71 && CurrSS <= 100)
2094 {
2095 RetSS = 90 + ((CurrSS - 70) / 3);
2096 }
2097 else if(CurrSS >= 41 && CurrSS <= 70)
2098 {
2099 RetSS = 78 + ((CurrSS - 40) / 3);
2100 }
2101 else if(CurrSS >= 31 && CurrSS <= 40)
2102 {
2103 RetSS = 66 + (CurrSS - 30);
2104 }
2105 else if(CurrSS >= 21 && CurrSS <= 30)
2106 {
2107 RetSS = 54 + (CurrSS - 20);
2108 }
2109 else if(CurrSS >= 5 && CurrSS <= 20)
2110 {
2111 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2112 }
2113 else if(CurrSS == 4)
2114 {
2115 RetSS = 36;
2116 }
2117 else if(CurrSS == 3)
2118 {
2119 RetSS = 27;
2120 }
2121 else if(CurrSS == 2)
2122 {
2123 RetSS = 18;
2124 }
2125 else if(CurrSS == 1)
2126 {
2127 RetSS = 9;
2128 }
2129 else
2130 {
2131 RetSS = CurrSS;
2132 }
2133 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2134
2135 // Step 2. Smoothing.
2136
2137 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2138
2139 return RetSS;
2140}
2141
57a88529
TB		 2142/* 0-100 index */
2143static long ieee80211_translate_todbm(u8 signal_strength_index)
8fc8598e
JC		 2144{
2145 long signal_power; // in dBm.
2146
2147 // Translate to dBm (x=0.5y-95).
2148 signal_power = (long)((signal_strength_index + 1) >> 1);
2149 signal_power -= 95;
2150
2151 return signal_power;
2152}
2153
2154static inline int ieee80211_network_init(
2155 struct ieee80211_device *ieee,
2156 struct ieee80211_probe_response *beacon,
2157 struct ieee80211_network *network,
2158 struct ieee80211_rx_stats *stats)
2159{
2160#ifdef CONFIG_IEEE80211_DEBUG
2161 //char rates_str[64];
2162 //char *p;
2163#endif
2164
fdc64a9e
SH		 2165 network->qos_data.active = 0;
2166 network->qos_data.supported = 0;
2167 network->qos_data.param_count = 0;
2168 network->qos_data.old_param_count = 0;
8fc8598e
JC		 2169
2170 /* Pull out fixed field data */
2171 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2172 network->capability = le16_to_cpu(beacon->capability);
2173 network->last_scanned = jiffies;
2174 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2175 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1a324441 2176 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
8fc8598e
JC		 2177 /* Where to pull this? beacon->listen_interval;*/
2178 network->listen_interval = 0x0A;
2179 network->rates_len = network->rates_ex_len = 0;
2180 network->last_associate = 0;
2181 network->ssid_len = 0;
2182 network->flags = 0;
2183 network->atim_window = 0;
2184 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
fdc64a9e 2185 0x3 : 0x0;
8fc8598e 2186 network->berp_info_valid = false;
fdc64a9e 2187 network->broadcom_cap_exist = false;
8fc8598e
JC		 2188 network->ralink_cap_exist = false;
2189 network->atheros_cap_exist = false;
2190 network->cisco_cap_exist = false;
2191 network->unknown_cap_exist = false;
2192#ifdef THOMAS_TURBO
2193 network->Turbo_Enable = 0;
2194#endif
8fc8598e
JC		 2195 network->CountryIeLen = 0;
2196 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
8fc8598e
JC		 2197//Initialize HT parameters
2198 //ieee80211_ht_initialize(&network->bssht);
2199 HTInitializeBssDesc(&network->bssht);
2200 if (stats->freq == IEEE80211_52GHZ_BAND) {
2201 /* for A band (No DS info) */
2202 network->channel = stats->received_channel;
2203 } else
2204 network->flags |= NETWORK_HAS_CCK;
2205
35997ff0
SH		 2206 network->wpa_ie_len = 0;
2207 network->rsn_ie_len = 0;
8fc8598e 2208
fdc64a9e
SH		 2209 if (ieee80211_parse_info_param
2210 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2211 return 1;
8fc8598e
JC		 2212
2213 network->mode = 0;
2214 if (stats->freq == IEEE80211_52GHZ_BAND)
2215 network->mode = IEEE_A;
2216 else {
2217 if (network->flags & NETWORK_HAS_OFDM)
2218 network->mode |= IEEE_G;
2219 if (network->flags & NETWORK_HAS_CCK)
2220 network->mode |= IEEE_B;
2221 }
2222
2223 if (network->mode == 0) {
0ee9f67c 2224 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
8fc8598e
JC		 2225 "network.\n",
2226 escape_essid(network->ssid,
2227 network->ssid_len),
0ee9f67c 2228 network->bssid);
8fc8598e
JC		 2229 return 1;
2230 }
2231
2232 if(network->bssht.bdSupportHT){
2233 if(network->mode == IEEE_A)
2234 network->mode = IEEE_N_5G;
2235 else if(network->mode & (IEEE_G | IEEE_B))
2236 network->mode = IEEE_N_24G;
2237 }
2238 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2239 network->flags |= NETWORK_EMPTY_ESSID;
2240
8fc8598e
JC		 2241 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2242 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2243 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
8fc8598e
JC		 2244
2245 memcpy(&network->stats, stats, sizeof(network->stats));
2246
2247 return 0;
2248}
2249
2250static inline int is_same_network(struct ieee80211_network *src,
ea77527a 2251 struct ieee80211_network *dst, struct ieee80211_device *ieee)
8fc8598e
JC		 2252{
2253 /* A network is only a duplicate if the channel, BSSID, ESSID
2254 * and the capability field (in particular IBSS and BSS) all match.
2255 * We treat all <hidden> with the same BSSID and channel
2256 * as one network */
2257 return //((src->ssid_len == dst->ssid_len) &&
2258 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2259 (src->channel == dst->channel) &&
2260 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2261 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2262 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2263 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2264 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2265 ((src->capability & WLAN_CAPABILITY_BSS) ==
2266 (dst->capability & WLAN_CAPABILITY_BSS)));
2267}
2268
2269static inline void update_network(struct ieee80211_network *dst,
2270 struct ieee80211_network *src)
2271{
2272 int qos_active;
2273 u8 old_param;
2274
2275 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2276 dst->capability = src->capability;
2277 memcpy(dst->rates, src->rates, src->rates_len);
2278 dst->rates_len = src->rates_len;
2279 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2280 dst->rates_ex_len = src->rates_ex_len;
dde48b99 2281 if (src->ssid_len > 0)
8fc8598e
JC		 2282 {
2283 memset(dst->ssid, 0, dst->ssid_len);
2284 dst->ssid_len = src->ssid_len;
2285 memcpy(dst->ssid, src->ssid, src->ssid_len);
2286 }
2287 dst->mode = src->mode;
2288 dst->flags = src->flags;
2289 dst->time_stamp[0] = src->time_stamp[0];
2290 dst->time_stamp[1] = src->time_stamp[1];
2291 if (src->flags & NETWORK_HAS_ERP_VALUE)
2292 {
2293 dst->erp_value = src->erp_value;
2294 dst->berp_info_valid = src->berp_info_valid = true;
2295 }
2296 dst->beacon_interval = src->beacon_interval;
2297 dst->listen_interval = src->listen_interval;
2298 dst->atim_window = src->atim_window;
2299 dst->dtim_period = src->dtim_period;
2300 dst->dtim_data = src->dtim_data;
2301 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2302 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2303 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2304
fdc64a9e 2305 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
8fc8598e
JC		 2306 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2307 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2308 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2309 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2310 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2311 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2312 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2313 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2314 dst->ralink_cap_exist = src->ralink_cap_exist;
2315 dst->atheros_cap_exist = src->atheros_cap_exist;
2316 dst->cisco_cap_exist = src->cisco_cap_exist;
2317 dst->unknown_cap_exist = src->unknown_cap_exist;
2318 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2319 dst->wpa_ie_len = src->wpa_ie_len;
2320 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2321 dst->rsn_ie_len = src->rsn_ie_len;
2322
2323 dst->last_scanned = jiffies;
2324 /* qos related parameters */
2325 //qos_active = src->qos_data.active;
2326 qos_active = dst->qos_data.active;
2327 //old_param = dst->qos_data.old_param_count;
2328 old_param = dst->qos_data.param_count;
2329 if(dst->flags & NETWORK_HAS_QOS_MASK)
2330 memcpy(&dst->qos_data, &src->qos_data,
2331 sizeof(struct ieee80211_qos_data));
2332 else {
2333 dst->qos_data.supported = src->qos_data.supported;
2334 dst->qos_data.param_count = src->qos_data.param_count;
2335 }
2336
dde48b99 2337 if (dst->qos_data.supported == 1) {
8fc8598e
JC		 2338 dst->QoS_Enable = 1;
2339 if(dst->ssid_len)
2340 IEEE80211_DEBUG_QOS
2341 ("QoS the network %s is QoS supported\n",
2342 dst->ssid);
2343 else
2344 IEEE80211_DEBUG_QOS
2345 ("QoS the network is QoS supported\n");
2346 }
2347 dst->qos_data.active = qos_active;
2348 dst->qos_data.old_param_count = old_param;
2349
2350 /* dst->last_associate is not overwritten */
8fc8598e 2351 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
7c6e3f24
PG		 2352 if (src->wmm_param[0].aci_aifsn|| \
2353 src->wmm_param[1].aci_aifsn|| \
2354 src->wmm_param[2].aci_aifsn|| \
2355 src->wmm_param[3].aci_aifsn) {
8fc8598e
JC		 2356 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2357 }
2358 //dst->QoS_Enable = src->QoS_Enable;
8fc8598e
JC		 2359#ifdef THOMAS_TURBO
2360 dst->Turbo_Enable = src->Turbo_Enable;
2361#endif
2362
8fc8598e
JC		 2363 dst->CountryIeLen = src->CountryIeLen;
2364 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
8fc8598e
JC		 2365
2366 //added by amy for LEAP
2367 dst->bWithAironetIE = src->bWithAironetIE;
2368 dst->bCkipSupported = src->bCkipSupported;
0b4ef0a6 2369 memcpy(dst->CcxRmState, src->CcxRmState, 2);
8fc8598e
JC		 2370 dst->bCcxRmEnable = src->bCcxRmEnable;
2371 dst->MBssidMask = src->MBssidMask;
2372 dst->bMBssidValid = src->bMBssidValid;
0b4ef0a6 2373 memcpy(dst->MBssid, src->MBssid, 6);
8fc8598e
JC		 2374 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2375 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2376
2377}
2378
2379static inline int is_beacon(__le16 fc)
2380{
2381 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2382}
2383
2384static inline void ieee80211_process_probe_response(
2385 struct ieee80211_device *ieee,
2386 struct ieee80211_probe_response *beacon,
2387 struct ieee80211_rx_stats *stats)
2388{
4596351d 2389 struct ieee80211_network *network;
8fc8598e
JC		 2390 struct ieee80211_network *target;
2391 struct ieee80211_network *oldest = NULL;
2392#ifdef CONFIG_IEEE80211_DEBUG
2393 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2394#endif
2f55aa54 2395 int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl));
8fc8598e
JC		 2396 unsigned long flags;
2397 short renew;
2f55aa54 2398 u16 capability;
8fc8598e
JC		 2399 //u8 wmm_info;
2400
4596351d
AB		 2401 network = kzalloc(sizeof(*network), GFP_ATOMIC);
2402 if (!network)
2403 goto out;
2404
2f55aa54 2405 capability = le16_to_cpu(beacon->capability);
8fc8598e 2406 IEEE80211_DEBUG_SCAN(
0ee9f67c 2407 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
8fc8598e 2408 escape_essid(info_element->data, info_element->len),
0ee9f67c 2409 beacon->header.addr3,
2f55aa54
SH		 2410 (capability & (1 << 0xf)) ? '1' : '0',
2411 (capability & (1 << 0xe)) ? '1' : '0',
2412 (capability & (1 << 0xd)) ? '1' : '0',
2413 (capability & (1 << 0xc)) ? '1' : '0',
2414 (capability & (1 << 0xb)) ? '1' : '0',
2415 (capability & (1 << 0xa)) ? '1' : '0',
2416 (capability & (1 << 0x9)) ? '1' : '0',
2417 (capability & (1 << 0x8)) ? '1' : '0',
2418 (capability & (1 << 0x7)) ? '1' : '0',
2419 (capability & (1 << 0x6)) ? '1' : '0',
2420 (capability & (1 << 0x5)) ? '1' : '0',
2421 (capability & (1 << 0x4)) ? '1' : '0',
2422 (capability & (1 << 0x3)) ? '1' : '0',
2423 (capability & (1 << 0x2)) ? '1' : '0',
2424 (capability & (1 << 0x1)) ? '1' : '0',
2425 (capability & (1 << 0x0)) ? '1' : '0');
8fc8598e 2426
4596351d 2427 if (ieee80211_network_init(ieee, beacon, network, stats)) {
0ee9f67c 2428 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
8fc8598e
JC		 2429 escape_essid(info_element->data,
2430 info_element->len),
0ee9f67c 2431 beacon->header.addr3,
2f55aa54 2432 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e 2433 "PROBE RESPONSE" : "BEACON");
4596351d 2434 goto out;
8fc8598e
JC		 2435 }
2436
8fc8598e
JC		 2437 // For Asus EeePc request,
2438 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2439 // wireless adapter should follow the country code.
2440 // (2) If there is no any country code in beacon,
2441 // then wireless adapter should do active scan from ch1~11 and
2442 // passive scan from ch12~14
2443
4596351d
AB		 2444 if (!IsLegalChannel(ieee, network->channel))
2445 goto out;
dde48b99 2446 if (ieee->bGlobalDomain)
8fc8598e 2447 {
2f55aa54 2448 if (fc == IEEE80211_STYPE_PROBE_RESP)
8fc8598e
JC		 2449 {
2450 // Case 1: Country code
2451 if(IS_COUNTRY_IE_VALID(ieee) )
2452 {
4596351d
AB		 2453 if (!IsLegalChannel(ieee, network->channel)) {
2454 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network->channel);
2455 goto out;
8fc8598e
JC		 2456 }
2457 }
2458 // Case 2: No any country code.
2459 else
2460 {
2461 // Filter over channel ch12~14
4596351d 2462 if (network->channel > 11)
8fc8598e 2463 {
4596351d
AB		 2464 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network->channel);
2465 goto out;
8fc8598e
JC		 2466 }
2467 }
2468 }
2469 else
2470 {
2471 // Case 1: Country code
2472 if(IS_COUNTRY_IE_VALID(ieee) )
2473 {
4596351d
AB		 2474 if (!IsLegalChannel(ieee, network->channel)) {
2475 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network->channel);
2476 goto out;
8fc8598e
JC		 2477 }
2478 }
2479 // Case 2: No any country code.
2480 else
2481 {
2482 // Filter over channel ch12~14
4596351d 2483 if (network->channel > 14)
8fc8598e 2484 {
4596351d
AB		 2485 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network->channel);
2486 goto out;
8fc8598e
JC		 2487 }
2488 }
2489 }
2490 }
8fc8598e
JC		 2491
2492 /* The network parsed correctly -- so now we scan our known networks
2493 * to see if we can find it in our list.
2494 *
2495 * NOTE: This search is definitely not optimized. Once its doing
2496 * the "right thing" we'll optimize it for efficiency if
2497 * necessary */
2498
2499 /* Search for this entry in the list and update it if it is
2500 * already there. */
2501
2502 spin_lock_irqsave(&ieee->lock, flags);
2503
4596351d
AB		 2504 if (is_same_network(&ieee->current_network, network, ieee)) {
2505 update_network(&ieee->current_network, network);
dde48b99 2506 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
8fc8598e
JC		 2507 && ieee->current_network.berp_info_valid){
2508 if(ieee->current_network.erp_value& ERP_UseProtection)
2509 ieee->current_network.buseprotection = true;
2510 else
2511 ieee->current_network.buseprotection = false;
2512 }
2513 if(is_beacon(beacon->header.frame_ctl))
2514 {
2515 if(ieee->state == IEEE80211_LINKED)
2516 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2517 }
2518 else //hidden AP
4596351d 2519 network->flags = (~NETWORK_EMPTY_ESSID & network->flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
8fc8598e
JC		 2520 }
2521
2522 list_for_each_entry(target, &ieee->network_list, list) {
4596351d 2523 if (is_same_network(target, network, ieee))
8fc8598e
JC		 2524 break;
2525 if ((oldest == NULL) ||
2526 (target->last_scanned < oldest->last_scanned))
2527 oldest = target;
2528 }
2529
2530 /* If we didn't find a match, then get a new network slot to initialize
2531 * with this beacon's information */
2532 if (&target->list == &ieee->network_list) {
2533 if (list_empty(&ieee->network_free_list)) {
2534 /* If there are no more slots, expire the oldest */
2535 list_del(&oldest->list);
2536 target = oldest;
0ee9f67c 2537 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
8fc8598e
JC		 2538 "network list.\n",
2539 escape_essid(target->ssid,
2540 target->ssid_len),
0ee9f67c 2541 target->bssid);
8fc8598e
JC		 2542 } else {
2543 /* Otherwise just pull from the free list */
2544 target = list_entry(ieee->network_free_list.next,
2545 struct ieee80211_network, list);
2546 list_del(ieee->network_free_list.next);
2547 }
2548
2549
2550#ifdef CONFIG_IEEE80211_DEBUG
0ee9f67c 2551 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
4596351d
AB		 2552 escape_essid(network->ssid,
2553 network->ssid_len),
2554 network->bssid,
2f55aa54 2555 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e
JC		 2556 "PROBE RESPONSE" : "BEACON");
2557#endif
4596351d 2558 memcpy(target, network, sizeof(*target));
8fc8598e
JC		 2559 list_add_tail(&target->list, &ieee->network_list);
2560 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
4596351d 2561 ieee80211_softmac_new_net(ieee,network);
8fc8598e 2562 } else {
0ee9f67c 2563 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
8fc8598e
JC		 2564 escape_essid(target->ssid,
2565 target->ssid_len),
0ee9f67c 2566 target->bssid,
2f55aa54 2567 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e
JC		 2568 "PROBE RESPONSE" : "BEACON");
2569
2570 /* we have an entry and we are going to update it. But this entry may
2571 * be already expired. In this case we do the same as we found a new
2572 * net and call the new_net handler
2573 */
2574 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2575 //YJ,add,080819,for hidden ap
2576 if(is_beacon(beacon->header.frame_ctl) == 0)
4596351d
AB		 2577 network->flags = (~NETWORK_EMPTY_ESSID & network->flags)|(NETWORK_EMPTY_ESSID & target->flags);
2578 //if(strncmp(network->ssid, "linksys-c",9) == 0)
2579 // printk("====>2 network->ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network->ssid, network->flags, target->ssid, target->flags);
2580 if(((network->flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2581 && (((network->ssid_len > 0) && (strncmp(target->ssid, network->ssid, network->ssid_len)))\
2582 ||((ieee->current_network.ssid_len == network->ssid_len)&&(strncmp(ieee->current_network.ssid, network->ssid, network->ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK))))
8fc8598e
JC		 2583 renew = 1;
2584 //YJ,add,080819,for hidden ap,end
2585
4596351d 2586 update_network(target, network);
8fc8598e 2587 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
4596351d 2588 ieee80211_softmac_new_net(ieee,network);
8fc8598e
JC		 2589 }
2590
2591 spin_unlock_irqrestore(&ieee->lock, flags);
4596351d 2592 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, network, ieee)&&\
8fc8598e 2593 (ieee->state == IEEE80211_LINKED)) {
dde48b99 2594 if (ieee->handle_beacon != NULL) {
8fc8598e
JC		 2595 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2596 }
2597 }
4596351d
AB		 2598
2599out:
2600 kfree(network);
8fc8598e
JC		 2601}
2602
2603void ieee80211_rx_mgt(struct ieee80211_device *ieee,
5c2918a5 2604 struct rtl_80211_hdr_4addr *header,
8fc8598e
JC		 2605 struct ieee80211_rx_stats *stats)
2606{
2f55aa54 2607 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
8fc8598e
JC		 2608
2609 case IEEE80211_STYPE_BEACON:
2610 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2f55aa54 2611 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
8fc8598e
JC		 2612 IEEE80211_DEBUG_SCAN("Beacon\n");
2613 ieee80211_process_probe_response(
2614 ieee, (struct ieee80211_probe_response *)header, stats);
2615 break;
2616
2617 case IEEE80211_STYPE_PROBE_RESP:
2618 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2f55aa54 2619 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
8fc8598e
JC		 2620 IEEE80211_DEBUG_SCAN("Probe response\n");
2621 ieee80211_process_probe_response(
2622 ieee, (struct ieee80211_probe_response *)header, stats);
2623 break;
2624
2625 }
2626}
8fc8598e 2627EXPORT_SYMBOL(ieee80211_rx_mgt);
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