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staging: rtl8192u: add proper SPDX identifiers on files that did not have them.
[linux-2.6-block.git] / drivers / staging / rtl8192u / ieee80211 / ieee80211_rx.c
CommitLineData
21baa36d 1// SPDX-License-Identifier: GPL-2.0
8fc8598e
JC		 2/*
3 * Original code based Host AP (software wireless LAN access point) driver
4 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
5 *
6 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * <jkmaline@cc.hut.fi>
8 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
9 * Copyright (c) 2004, Intel Corporation
8fc8598e
JC		 10 ******************************************************************************
11
12 Few modifications for Realtek's Wi-Fi drivers by
559a4c31 13 Andrea Merello <andrea.merello@gmail.com>
8fc8598e
JC		 14
15 A special thanks goes to Realtek for their support !
16
17******************************************************************************/
18
19
20#include <linux/compiler.h>
8fc8598e
JC		 21#include <linux/errno.h>
22#include <linux/if_arp.h>
23#include <linux/in6.h>
24#include <linux/in.h>
25#include <linux/ip.h>
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/netdevice.h>
29#include <linux/pci.h>
30#include <linux/proc_fs.h>
31#include <linux/skbuff.h>
32#include <linux/slab.h>
33#include <linux/tcp.h>
34#include <linux/types.h>
8fc8598e
JC		 35#include <linux/wireless.h>
36#include <linux/etherdevice.h>
ca67dfef 37#include <linux/uaccess.h>
8fc8598e
JC		 38#include <linux/ctype.h>
39
40#include "ieee80211.h"
8fc8598e 41#include "dot11d.h"
8fc8598e
JC		 42static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
43 struct sk_buff *skb,
44 struct ieee80211_rx_stats *rx_stats)
45{
5c2918a5 46 struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data;
8fc8598e
JC		 47 u16 fc = le16_to_cpu(hdr->frame_ctl);
48
49 skb->dev = ieee->dev;
fdc64a9e 50 skb_reset_mac_header(skb);
8fc8598e
JC		 51
52 skb_pull(skb, ieee80211_get_hdrlen(fc));
53 skb->pkt_type = PACKET_OTHERHOST;
6465144c 54 skb->protocol = htons(ETH_P_80211_RAW);
8fc8598e
JC		 55 memset(skb->cb, 0, sizeof(skb->cb));
56 netif_rx(skb);
57}
58
59
60/* Called only as a tasklet (software IRQ) */
61static struct ieee80211_frag_entry *
62ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
0b4ef0a6 63 unsigned int frag, u8 tid, u8 *src, u8 *dst)
8fc8598e
JC		 64{
65 struct ieee80211_frag_entry *entry;
66 int i;
67
68 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
69 entry = &ieee->frag_cache[tid][i];
70 if (entry->skb != NULL &&
71 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
72 IEEE80211_DEBUG_FRAG(
73 "expiring fragment cache entry "
74 "seq=%u last_frag=%u\n",
75 entry->seq, entry->last_frag);
76 dev_kfree_skb_any(entry->skb);
77 entry->skb = NULL;
78 }
79
80 if (entry->skb != NULL && entry->seq == seq &&
81 (entry->last_frag + 1 == frag || frag == -1) &&
82 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
83 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
84 return entry;
85 }
86
87 return NULL;
88}
89
90/* Called only as a tasklet (software IRQ) */
91static struct sk_buff *
92ieee80211_frag_cache_get(struct ieee80211_device *ieee,
5c2918a5 93 struct rtl_80211_hdr_4addr *hdr)
8fc8598e
JC		 94{
95 struct sk_buff *skb = NULL;
96 u16 fc = le16_to_cpu(hdr->frame_ctl);
97 u16 sc = le16_to_cpu(hdr->seq_ctl);
98 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
99 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
100 struct ieee80211_frag_entry *entry;
5c2918a5
PG		 101 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
102 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 103 u8 tid;
104
105 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 106 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
8fc8598e
JC		 107 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
108 tid = UP2AC(tid);
298291bb 109 tid++;
8fc8598e 110 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 111 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
8fc8598e
JC		 112 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
113 tid = UP2AC(tid);
298291bb 114 tid++;
8fc8598e
JC		 115 } else {
116 tid = 0;
117 }
118
119 if (frag == 0) {
120 /* Reserve enough space to fit maximum frame length */
121 skb = dev_alloc_skb(ieee->dev->mtu +
5c2918a5 122 sizeof(struct rtl_80211_hdr_4addr) +
8fc8598e
JC		 123 8 /* LLC */ +
124 2 /* alignment */ +
125 8 /* WEP */ +
126 ETH_ALEN /* WDS */ +
127 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
6e8cb1cf 128 if (!skb)
8fc8598e
JC		 129 return NULL;
130
131 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
132 ieee->frag_next_idx[tid]++;
133 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN)
134 ieee->frag_next_idx[tid] = 0;
135
136 if (entry->skb != NULL)
137 dev_kfree_skb_any(entry->skb);
138
139 entry->first_frag_time = jiffies;
140 entry->seq = seq;
141 entry->last_frag = frag;
142 entry->skb = skb;
143 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
144 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
145 } else {
146 /* received a fragment of a frame for which the head fragment
147 * should have already been received */
148 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
149 hdr->addr1);
c0fb0459 150 if (entry) {
8fc8598e
JC		 151 entry->last_frag = frag;
152 skb = entry->skb;
153 }
154 }
155
156 return skb;
157}
158
159
160/* Called only as a tasklet (software IRQ) */
161static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
5c2918a5 162 struct rtl_80211_hdr_4addr *hdr)
8fc8598e
JC		 163{
164 u16 fc = le16_to_cpu(hdr->frame_ctl);
165 u16 sc = le16_to_cpu(hdr->seq_ctl);
166 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
167 struct ieee80211_frag_entry *entry;
5c2918a5
PG		 168 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
169 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 170 u8 tid;
171
172 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 173 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr;
8fc8598e
JC		 174 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
175 tid = UP2AC(tid);
298291bb 176 tid++;
8fc8598e 177 } else if (IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 178 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr;
8fc8598e
JC		 179 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
180 tid = UP2AC(tid);
298291bb 181 tid++;
8fc8598e
JC		 182 } else {
183 tid = 0;
184 }
185
0b4ef0a6 186 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
8fc8598e
JC		 187 hdr->addr1);
188
c0fb0459 189 if (!entry) {
8fc8598e
JC		 190 IEEE80211_DEBUG_FRAG(
191 "could not invalidate fragment cache "
192 "entry (seq=%u)\n", seq);
193 return -1;
194 }
195
196 entry->skb = NULL;
197 return 0;
198}
199
200
201
202/* ieee80211_rx_frame_mgtmt
203 *
204 * Responsible for handling management control frames
205 *
206 * Called by ieee80211_rx */
207static inline int
208ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
209 struct ieee80211_rx_stats *rx_stats, u16 type,
210 u16 stype)
211{
212 /* On the struct stats definition there is written that
213 * this is not mandatory.... but seems that the probe
214 * response parser uses it
215 */
5c2918a5 216 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
8fc8598e
JC		 217
218 rx_stats->len = skb->len;
5c2918a5 219 ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats);
8236589b
DU		 220 /* if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) */
221 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))/* use ADDR1 to perform address matching for Management frames */
fdc64a9e
SH		 222 {
223 dev_kfree_skb_any(skb);
224 return 0;
225 }
8fc8598e
JC		 226
227 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
228
229 dev_kfree_skb_any(skb);
230
231 return 0;
232
233 #ifdef NOT_YET
234 if (ieee->iw_mode == IW_MODE_MASTER) {
d0bc218b 235 printk(KERN_DEBUG "%s: Master mode not yet supported.\n",
8fc8598e
JC		 236 ieee->dev->name);
237 return 0;
238/*
239 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
240 skb->data);*/
241 }
242
243 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) {
244 if (stype == WLAN_FC_STYPE_BEACON &&
245 ieee->iw_mode == IW_MODE_MASTER) {
246 struct sk_buff *skb2;
247 /* Process beacon frames also in kernel driver to
248 * update STA(AP) table statistics */
249 skb2 = skb_clone(skb, GFP_ATOMIC);
250 if (skb2)
251 hostap_rx(skb2->dev, skb2, rx_stats);
252 }
253
254 /* send management frames to the user space daemon for
255 * processing */
256 ieee->apdevstats.rx_packets++;
257 ieee->apdevstats.rx_bytes += skb->len;
258 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
259 return 0;
260 }
261
262 if (ieee->iw_mode == IW_MODE_MASTER) {
263 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
264 printk(KERN_DEBUG "%s: unknown management frame "
265 "(type=0x%02x, stype=0x%02x) dropped\n",
266 skb->dev->name, type, stype);
267 return -1;
268 }
269
270 hostap_rx(skb->dev, skb, rx_stats);
271 return 0;
272 }
273
274 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
275 "received in non-Host AP mode\n", skb->dev->name);
276 return -1;
277 #endif
278}
279
280
281
282/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
283/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
284static unsigned char rfc1042_header[] =
285{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
286/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
287static unsigned char bridge_tunnel_header[] =
288{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
289/* No encapsulation header if EtherType < 0x600 (=length) */
290
291/* Called by ieee80211_rx_frame_decrypt */
292static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
293 struct sk_buff *skb, size_t hdrlen)
294{
295 struct net_device *dev = ieee->dev;
296 u16 fc, ethertype;
5c2918a5 297 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 298 u8 *pos;
299
300 if (skb->len < 24)
301 return 0;
302
5c2918a5 303 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 304 fc = le16_to_cpu(hdr->frame_ctl);
305
306 /* check that the frame is unicast frame to us */
307 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
308 IEEE80211_FCTL_TODS &&
309 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
310 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
311 /* ToDS frame with own addr BSSID and DA */
312 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
313 IEEE80211_FCTL_FROMDS &&
314 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
315 /* FromDS frame with own addr as DA */
316 } else
317 return 0;
318
319 if (skb->len < 24 + 8)
320 return 0;
321
322 /* check for port access entity Ethernet type */
323// pos = skb->data + 24;
324 pos = skb->data + hdrlen;
325 ethertype = (pos[6] << 8) | pos[7];
326 if (ethertype == ETH_P_PAE)
327 return 1;
328
329 return 0;
330}
331
332/* Called only as a tasklet (software IRQ), by ieee80211_rx */
333static inline int
ea77527a 334ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
8fc8598e
JC		 335 struct ieee80211_crypt_data *crypt)
336{
5c2918a5 337 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 338 int res, hdrlen;
339
bdcca44e 340 if (!crypt || !crypt->ops->decrypt_mpdu)
8fc8598e 341 return 0;
8fc8598e
JC		 342 if (ieee->hwsec_active)
343 {
20f896c4 344 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
8fc8598e
JC		 345 tcb_desc->bHwSec = 1;
346 }
5c2918a5 347 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 348 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
349
8fc8598e
JC		 350 if (ieee->tkip_countermeasures &&
351 strcmp(crypt->ops->name, "TKIP") == 0) {
352 if (net_ratelimit()) {
353 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
0ee9f67c
JP		 354 "received packet from %pM\n",
355 ieee->dev->name, hdr->addr2);
8fc8598e
JC		 356 }
357 return -1;
358 }
8fc8598e
JC		 359
360 atomic_inc(&crypt->refcnt);
361 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
362 atomic_dec(&crypt->refcnt);
363 if (res < 0) {
364 IEEE80211_DEBUG_DROP(
0ee9f67c
JP		 365 "decryption failed (SA=%pM"
366 ") res=%d\n", hdr->addr2, res);
8fc8598e
JC		 367 if (res == -2)
368 IEEE80211_DEBUG_DROP("Decryption failed ICV "
369 "mismatch (key %d)\n",
370 skb->data[hdrlen + 3] >> 6);
371 ieee->ieee_stats.rx_discards_undecryptable++;
372 return -1;
373 }
374
375 return res;
376}
377
378
379/* Called only as a tasklet (software IRQ), by ieee80211_rx */
380static inline int
ea77527a 381ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb,
8fc8598e
JC		 382 int keyidx, struct ieee80211_crypt_data *crypt)
383{
5c2918a5 384 struct rtl_80211_hdr_4addr *hdr;
8fc8598e
JC		 385 int res, hdrlen;
386
bdcca44e 387 if (!crypt || !crypt->ops->decrypt_msdu)
8fc8598e
JC		 388 return 0;
389 if (ieee->hwsec_active)
390 {
20f896c4 391 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE);
8fc8598e
JC		 392 tcb_desc->bHwSec = 1;
393 }
394
5c2918a5 395 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 396 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
397
398 atomic_inc(&crypt->refcnt);
399 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
400 atomic_dec(&crypt->refcnt);
401 if (res < 0) {
402 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
0ee9f67c
JP		 403 " (SA=%pM keyidx=%d)\n",
404 ieee->dev->name, hdr->addr2, keyidx);
8fc8598e
JC		 405 return -1;
406 }
407
408 return 0;
409}
410
411
412/* this function is stolen from ipw2200 driver*/
413#define IEEE_PACKET_RETRY_TIME (5*HZ)
414static int is_duplicate_packet(struct ieee80211_device *ieee,
5c2918a5 415 struct rtl_80211_hdr_4addr *header)
8fc8598e
JC		 416{
417 u16 fc = le16_to_cpu(header->frame_ctl);
418 u16 sc = le16_to_cpu(header->seq_ctl);
419 u16 seq = WLAN_GET_SEQ_SEQ(sc);
420 u16 frag = WLAN_GET_SEQ_FRAG(sc);
421 u16 *last_seq, *last_frag;
422 unsigned long *last_time;
5c2918a5
PG		 423 struct rtl_80211_hdr_3addrqos *hdr_3addrqos;
424 struct rtl_80211_hdr_4addrqos *hdr_4addrqos;
8fc8598e
JC		 425 u8 tid;
426
427
428 //TO2DS and QoS
429 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) {
5c2918a5 430 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header;
8fc8598e
JC		 431 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID;
432 tid = UP2AC(tid);
298291bb 433 tid++;
8fc8598e 434 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS
5c2918a5 435 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header;
8fc8598e
JC		 436 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID;
437 tid = UP2AC(tid);
298291bb 438 tid++;
8fc8598e
JC		 439 } else { // no QoS
440 tid = 0;
441 }
442
443 switch (ieee->iw_mode) {
444 case IW_MODE_ADHOC:
445 {
446 struct list_head *p;
447 struct ieee_ibss_seq *entry = NULL;
448 u8 *mac = header->addr2;
449 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
0c293592 450
8fc8598e
JC		 451 list_for_each(p, &ieee->ibss_mac_hash[index]) {
452 entry = list_entry(p, struct ieee_ibss_seq, list);
453 if (!memcmp(entry->mac, mac, ETH_ALEN))
454 break;
455 }
456 // if (memcmp(entry->mac, mac, ETH_ALEN)){
457 if (p == &ieee->ibss_mac_hash[index]) {
458 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
5a95f073 459 if (!entry)
8fc8598e 460 return 0;
8fc8598e
JC		 461 memcpy(entry->mac, mac, ETH_ALEN);
462 entry->seq_num[tid] = seq;
463 entry->frag_num[tid] = frag;
464 entry->packet_time[tid] = jiffies;
465 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
466 return 0;
467 }
468 last_seq = &entry->seq_num[tid];
469 last_frag = &entry->frag_num[tid];
470 last_time = &entry->packet_time[tid];
471 break;
472 }
473
474 case IW_MODE_INFRA:
475 last_seq = &ieee->last_rxseq_num[tid];
476 last_frag = &ieee->last_rxfrag_num[tid];
477 last_time = &ieee->last_packet_time[tid];
478
479 break;
480 default:
481 return 0;
482 }
483
484// if(tid != 0) {
485// printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
486// }
487 if ((*last_seq == seq) &&
488 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
879f3074 489 if (*last_frag == frag)
8fc8598e 490 goto drop;
8fc8598e
JC		 491 if (*last_frag + 1 != frag)
492 /* out-of-order fragment */
8fc8598e
JC		 493 goto drop;
494 } else
495 *last_seq = seq;
496
497 *last_frag = frag;
498 *last_time = jiffies;
499 return 0;
500
501drop:
502// BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
8fc8598e
JC		 503
504 return 1;
505}
4b10d50c 506
3eb9aa00 507static bool AddReorderEntry(struct rx_ts_record *pTS, struct rx_reorder_entry *pReorderEntry)
8fc8598e 508{
a1ac7d1c
JW		 509 struct list_head *pList = &pTS->rx_pending_pkt_list;
510 while(pList->next != &pTS->rx_pending_pkt_list)
8fc8598e 511 {
e8ca82a1 512 if (SN_LESS(pReorderEntry->SeqNum, list_entry(pList->next, struct rx_reorder_entry, List)->SeqNum))
8fc8598e 513 pList = pList->next;
e8ca82a1 514 else if (SN_EQUAL(pReorderEntry->SeqNum, list_entry(pList->next, struct rx_reorder_entry, List)->SeqNum))
8fc8598e 515 return false;
8fc8598e 516 else
8fc8598e 517 break;
8fc8598e 518 }
8fc8598e
JC		 519 pReorderEntry->List.next = pList->next;
520 pReorderEntry->List.next->prev = &pReorderEntry->List;
521 pReorderEntry->List.prev = pList;
522 pList->next = &pReorderEntry->List;
523
524 return true;
525}
526
ea77527a 527void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index)
8fc8598e
JC		 528{
529 u8 i = 0 , j=0;
530 u16 ethertype;
531// if(index > 1)
f8628a47 532// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__func__,index);
8fc8598e
JC		 533 for(j = 0; j<index; j++)
534 {
535//added by amy for reorder
ea77527a 536 struct ieee80211_rxb *prxb = prxbIndicateArray[j];
8fc8598e
JC		 537 for(i = 0; i<prxb->nr_subframes; i++) {
538 struct sk_buff *sub_skb = prxb->subframes[i];
539
540 /* convert hdr + possible LLC headers into Ethernet header */
541 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
542 if (sub_skb->len >= 8 &&
543 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
544 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
545 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
546 /* remove RFC1042 or Bridge-Tunnel encapsulation and
547 * replace EtherType */
548 skb_pull(sub_skb, SNAP_SIZE);
549 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
550 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
551 } else {
8fc8598e 552 /* Leave Ethernet header part of hdr and full payload */
1c19f379 553 put_unaligned_be16(sub_skb->len, skb_push(sub_skb, 2));
8fc8598e
JC		 554 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
555 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
556 }
557 //stats->rx_packets++;
558 //stats->rx_bytes += sub_skb->len;
559
560 /* Indicat the packets to upper layer */
561 if (sub_skb) {
8fc8598e
JC		 562 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
563 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
564 sub_skb->dev = ieee->dev;
565 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
566 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
567 ieee->last_rx_ps_time = jiffies;
8fc8598e
JC		 568 netif_rx(sub_skb);
569 }
570 }
571 kfree(prxb);
572 prxb = NULL;
573 }
574}
575
576
4b10d50c
AR		 577static void RxReorderIndicatePacket(struct ieee80211_device *ieee,
578 struct ieee80211_rxb *prxb,
80b6f0d4 579 struct rx_ts_record *pTS, u16 SeqNum)
8fc8598e
JC		 580{
581 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
3eb9aa00 582 struct rx_reorder_entry *pReorderEntry = NULL;
79a5ccd9 583 struct ieee80211_rxb **prxbIndicateArray;
8fc8598e 584 u8 WinSize = pHTInfo->RxReorderWinSize;
dfbb36f7 585 u16 WinEnd = (pTS->rx_indicate_seq + WinSize - 1) % 4096;
8fc8598e
JC		 586 u8 index = 0;
587 bool bMatchWinStart = false, bPktInBuf = false;
dfbb36f7 588 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->rx_indicate_seq is %d, WinSize is %d\n",__func__,SeqNum,pTS->rx_indicate_seq,WinSize);
79a5ccd9 589
6da2ec56
KC		 590 prxbIndicateArray = kmalloc_array(REORDER_WIN_SIZE,
591 sizeof(struct ieee80211_rxb *),
592 GFP_KERNEL);
79a5ccd9
OK		 593 if (!prxbIndicateArray)
594 return;
595
8fc8598e 596 /* Rx Reorder initialize condition.*/
40a3483b 597 if (pTS->rx_indicate_seq == 0xffff)
dfbb36f7 598 pTS->rx_indicate_seq = SeqNum;
8fc8598e
JC		 599
600 /* Drop out the packet which SeqNum is smaller than WinStart */
dfbb36f7 601 if (SN_LESS(SeqNum, pTS->rx_indicate_seq)) {
8fc8598e 602 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
dfbb36f7 603 pTS->rx_indicate_seq, SeqNum);
8fc8598e
JC		 604 pHTInfo->RxReorderDropCounter++;
605 {
606 int i;
607 for(i =0; i < prxb->nr_subframes; i++) {
608 dev_kfree_skb(prxb->subframes[i]);
609 }
610 kfree(prxb);
611 prxb = NULL;
612 }
79a5ccd9
OK		 613
614 kfree(prxbIndicateArray);
8fc8598e
JC		 615 return;
616 }
617
618 /*
619 * Sliding window manipulation. Conditions includes:
620 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
621 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
622 */
dfbb36f7
JW		 623 if(SN_EQUAL(SeqNum, pTS->rx_indicate_seq)) {
624 pTS->rx_indicate_seq = (pTS->rx_indicate_seq + 1) % 4096;
8fc8598e
JC		 625 bMatchWinStart = true;
626 } else if(SN_LESS(WinEnd, SeqNum)) {
627 if(SeqNum >= (WinSize - 1)) {
dfbb36f7 628 pTS->rx_indicate_seq = SeqNum + 1 -WinSize;
8fc8598e 629 } else {
dfbb36f7 630 pTS->rx_indicate_seq = 4095 - (WinSize - (SeqNum + 1)) + 1;
8fc8598e 631 }
dfbb36f7 632 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->rx_indicate_seq, SeqNum);
8fc8598e
JC		 633 }
634
635 /*
636 * Indication process.
637 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
638 * with the SeqNum smaller than latest WinStart and buffer other packets.
639 */
640 /* For Rx Reorder condition:
641 * 1. All packets with SeqNum smaller than WinStart => Indicate
642 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
643 */
644 if(bMatchWinStart) {
645 /* Current packet is going to be indicated.*/
646 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
dfbb36f7 647 pTS->rx_indicate_seq, SeqNum);
8fc8598e 648 prxbIndicateArray[0] = prxb;
f8628a47 649// printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum);
8fc8598e
JC		 650 index = 1;
651 } else {
652 /* Current packet is going to be inserted into pending list.*/
f8628a47 653 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__);
8fc8598e 654 if(!list_empty(&ieee->RxReorder_Unused_List)) {
a279fc9d 655 pReorderEntry = list_entry(ieee->RxReorder_Unused_List.next, struct rx_reorder_entry, List);
8fc8598e
JC		 656 list_del_init(&pReorderEntry->List);
657
658 /* Make a reorder entry and insert into a the packet list.*/
659 pReorderEntry->SeqNum = SeqNum;
660 pReorderEntry->prxb = prxb;
f8628a47 661 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
8fc8598e 662
8fc8598e
JC		 663 if(!AddReorderEntry(pTS, pReorderEntry)) {
664 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
dfbb36f7 665 __func__, pTS->rx_indicate_seq, SeqNum);
8fc8598e
JC		 666 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
667 {
668 int i;
669 for(i =0; i < prxb->nr_subframes; i++) {
670 dev_kfree_skb(prxb->subframes[i]);
671 }
672 kfree(prxb);
673 prxb = NULL;
674 }
675 } else {
676 IEEE80211_DEBUG(IEEE80211_DL_REORDER,
dfbb36f7 677 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->rx_indicate_seq, SeqNum);
8fc8598e 678 }
8fc8598e
JC		 679 }
680 else {
681 /*
682 * Packets are dropped if there is not enough reorder entries.
683 * This part shall be modified!! We can just indicate all the
684 * packets in buffer and get reorder entries.
685 */
686 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
687 {
688 int i;
689 for(i =0; i < prxb->nr_subframes; i++) {
690 dev_kfree_skb(prxb->subframes[i]);
691 }
692 kfree(prxb);
693 prxb = NULL;
694 }
695 }
696 }
697
698 /* Check if there is any packet need indicate.*/
a1ac7d1c 699 while(!list_empty(&pTS->rx_pending_pkt_list)) {
f8628a47 700 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
a279fc9d 701 pReorderEntry = list_entry(pTS->rx_pending_pkt_list.prev, struct rx_reorder_entry, List);
dfbb36f7
JW		 702 if (SN_LESS(pReorderEntry->SeqNum, pTS->rx_indicate_seq) ||
703 SN_EQUAL(pReorderEntry->SeqNum, pTS->rx_indicate_seq))
8fc8598e
JC		 704 {
705 /* This protect buffer from overflow. */
dde48b99 706 if (index >= REORDER_WIN_SIZE) {
8fc8598e
JC		 707 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n");
708 bPktInBuf = true;
709 break;
710 }
711
712 list_del_init(&pReorderEntry->List);
713
dfbb36f7
JW		 714 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->rx_indicate_seq))
715 pTS->rx_indicate_seq = (pTS->rx_indicate_seq + 1) % 4096;
8fc8598e 716
dfbb36f7 717 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->rx_indicate_seq, SeqNum);
8fc8598e 718 prxbIndicateArray[index] = pReorderEntry->prxb;
f8628a47 719 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum);
8fc8598e
JC		 720 index++;
721
722 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List);
723 } else {
724 bPktInBuf = true;
725 break;
726 }
8fc8598e
JC		 727 }
728
729 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
dde48b99 730 if (index>0) {
8fc8598e 731 // Cancel previous pending timer.
5b76f8cb 732 // del_timer_sync(&pTS->rx_pkt_pending_timer);
902efe07 733 pTS->rx_timeout_indicate_seq = 0xffff;
8fc8598e
JC		 734
735 // Indicate packets
736 if(index>REORDER_WIN_SIZE){
58493d8e 737 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
79a5ccd9 738 kfree(prxbIndicateArray);
8fc8598e
JC		 739 return;
740 }
741 ieee80211_indicate_packets(ieee, prxbIndicateArray, index);
742 }
743
902efe07 744 if (bPktInBuf && pTS->rx_timeout_indicate_seq == 0xffff) {
8fc8598e 745 // Set new pending timer.
f8628a47 746 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
902efe07 747 pTS->rx_timeout_indicate_seq = pTS->rx_indicate_seq;
5b76f8cb
JW		 748 if(timer_pending(&pTS->rx_pkt_pending_timer))
749 del_timer_sync(&pTS->rx_pkt_pending_timer);
750 pTS->rx_pkt_pending_timer.expires = jiffies +
b1d96609 751 msecs_to_jiffies(pHTInfo->RxReorderPendingTime);
5b76f8cb 752 add_timer(&pTS->rx_pkt_pending_timer);
8fc8598e 753 }
79a5ccd9
OK		 754
755 kfree(prxbIndicateArray);
8fc8598e
JC		 756}
757
4b10d50c
AR		 758static u8 parse_subframe(struct sk_buff *skb,
759 struct ieee80211_rx_stats *rx_stats,
0b4ef0a6 760 struct ieee80211_rxb *rxb, u8 *src, u8 *dst)
8fc8598e 761{
5c2918a5 762 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data;
8fc8598e
JC		 763 u16 fc = le16_to_cpu(hdr->frame_ctl);
764
5c2918a5 765 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr);
8fc8598e
JC		 766 u16 ChkLength;
767 bool bIsAggregateFrame = false;
768 u16 nSubframe_Length;
769 u8 nPadding_Length = 0;
770 u16 SeqNum=0;
771
772 struct sk_buff *sub_skb;
8fc8598e
JC		 773 /* just for debug purpose */
774 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
775
dde48b99 776 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\
8fc8598e
JC		 777 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) {
778 bIsAggregateFrame = true;
779 }
780
dde48b99 781 if (IEEE80211_QOS_HAS_SEQ(fc)) {
8fc8598e
JC		 782 LLCOffset += 2;
783 }
784
dde48b99 785 if (rx_stats->bContainHTC) {
3f119c9d 786 LLCOffset += HTCLNG;
8fc8598e 787 }
8fc8598e
JC		 788 // Null packet, don't indicate it to upper layer
789 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
790
d59d6f5d 791 if (skb->len <= ChkLength)
8fc8598e 792 return 0;
8fc8598e
JC		 793
794 skb_pull(skb, LLCOffset);
795
796 if(!bIsAggregateFrame) {
797 rxb->nr_subframes = 1;
798#ifdef JOHN_NOCPY
799 rxb->subframes[0] = skb;
800#else
801 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC);
802#endif
803
804 memcpy(rxb->src,src,ETH_ALEN);
805 memcpy(rxb->dst,dst,ETH_ALEN);
806 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
807 return 1;
808 } else {
809 rxb->nr_subframes = 0;
810 memcpy(rxb->src,src,ETH_ALEN);
811 memcpy(rxb->dst,dst,ETH_ALEN);
812 while(skb->len > ETHERNET_HEADER_SIZE) {
813 /* Offset 12 denote 2 mac address */
ea77527a 814 nSubframe_Length = *((u16 *)(skb->data + 12));
8fc8598e
JC		 815 //==m==>change the length order
816 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
817
dde48b99 818 if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) {
8fc8598e 819 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
0b4ef0a6 820 __func__, rxb->nr_subframes);
f8628a47 821 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length);
8fc8598e
JC		 822 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length);
823 printk("The Packet SeqNum is %d\n",SeqNum);
824 return 0;
825 }
826
827 /* move the data point to data content */
828 skb_pull(skb, ETHERNET_HEADER_SIZE);
829
830#ifdef JOHN_NOCPY
831 sub_skb = skb_clone(skb, GFP_ATOMIC);
832 sub_skb->len = nSubframe_Length;
833 sub_skb->tail = sub_skb->data + nSubframe_Length;
834#else
835 /* Allocate new skb for releasing to upper layer */
836 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
79d99c30
VK		 837 if (!sub_skb)
838 return 0;
8fc8598e 839 skb_reserve(sub_skb, 12);
b952f4df 840 skb_put_data(sub_skb, skb->data, nSubframe_Length);
8fc8598e
JC		 841#endif
842 rxb->subframes[rxb->nr_subframes++] = sub_skb;
dde48b99 843 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
8fc8598e
JC		 844 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
845 break;
846 }
0b4ef0a6 847 skb_pull(skb, nSubframe_Length);
8fc8598e 848
dde48b99 849 if (skb->len != 0) {
8fc8598e 850 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4);
dde48b99 851 if (nPadding_Length == 4) {
8fc8598e
JC		 852 nPadding_Length = 0;
853 }
854
dde48b99 855 if (skb->len < nPadding_Length) {
8fc8598e
JC		 856 return 0;
857 }
858
0b4ef0a6 859 skb_pull(skb, nPadding_Length);
8fc8598e
JC		 860 }
861 }
862#ifdef JOHN_NOCPY
863 dev_kfree_skb(skb);
864#endif
865 //{just for debug added by david
866 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
867 //}
868 return rxb->nr_subframes;
869 }
870}
871
872/* All received frames are sent to this function. @skb contains the frame in
873 * IEEE 802.11 format, i.e., in the format it was sent over air.
874 * This function is called only as a tasklet (software IRQ). */
875int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
876 struct ieee80211_rx_stats *rx_stats)
877{
878 struct net_device *dev = ieee->dev;
5c2918a5
PG		 879 struct rtl_80211_hdr_4addr *hdr;
880 //struct rtl_80211_hdr_3addrqos *hdr;
8fc8598e
JC		 881
882 size_t hdrlen;
883 u16 fc, type, stype, sc;
884 struct net_device_stats *stats;
885 unsigned int frag;
8fc8598e
JC		 886 u16 ethertype;
887 //added by amy for reorder
888 u8 TID = 0;
889 u16 SeqNum = 0;
80b6f0d4 890 struct rx_ts_record *pTS = NULL;
8fc8598e
JC		 891 //bool bIsAggregateFrame = false;
892 //added by amy for reorder
893#ifdef NOT_YET
894 struct net_device *wds = NULL;
8fc8598e 895 struct net_device *wds = NULL;
8fc8598e
JC		 896 int from_assoc_ap = 0;
897 void *sta = NULL;
898#endif
899// u16 qos_ctl = 0;
900 u8 dst[ETH_ALEN];
901 u8 src[ETH_ALEN];
902 u8 bssid[ETH_ALEN];
903 struct ieee80211_crypt_data *crypt = NULL;
904 int keyidx = 0;
905
906 int i;
ea77527a 907 struct ieee80211_rxb *rxb = NULL;
cd63eb0c 908 // cheat the hdr type
5c2918a5 909 hdr = (struct rtl_80211_hdr_4addr *)skb->data;
8fc8598e
JC		 910 stats = &ieee->stats;
911
912 if (skb->len < 10) {
913 printk(KERN_INFO "%s: SKB length < 10\n",
914 dev->name);
915 goto rx_dropped;
916 }
917
918 fc = le16_to_cpu(hdr->frame_ctl);
919 type = WLAN_FC_GET_TYPE(fc);
920 stype = WLAN_FC_GET_STYPE(fc);
921 sc = le16_to_cpu(hdr->seq_ctl);
922
923 frag = WLAN_GET_SEQ_FRAG(sc);
924 hdrlen = ieee80211_get_hdrlen(fc);
925
dde48b99 926 if (HTCCheck(ieee, skb->data))
8fc8598e
JC		 927 {
928 if(net_ratelimit())
8ad835b9 929 printk("find HTCControl\n");
8fc8598e 930 hdrlen += 4;
19cd2297 931 rx_stats->bContainHTC = true;
8fc8598e
JC		 932 }
933
934 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
935#ifdef NOT_YET
8fc8598e
JC		 936 /* Put this code here so that we avoid duplicating it in all
937 * Rx paths. - Jean II */
938#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
939 /* If spy monitoring on */
940 if (iface->spy_data.spy_number > 0) {
941 struct iw_quality wstats;
942 wstats.level = rx_stats->rssi;
943 wstats.noise = rx_stats->noise;
944 wstats.updated = 6; /* No qual value */
945 /* Update spy records */
946 wireless_spy_update(dev, hdr->addr2, &wstats);
947 }
948#endif /* IW_WIRELESS_SPY */
8fc8598e
JC		 949 hostap_update_rx_stats(local->ap, hdr, rx_stats);
950#endif
951
8fc8598e
JC		 952 if (ieee->iw_mode == IW_MODE_MONITOR) {
953 ieee80211_monitor_rx(ieee, skb, rx_stats);
954 stats->rx_packets++;
955 stats->rx_bytes += skb->len;
956 return 1;
957 }
e6c1ef6c 958
8fc8598e
JC		 959 if (ieee->host_decrypt) {
960 int idx = 0;
961 if (skb->len >= hdrlen + 3)
962 idx = skb->data[hdrlen + 3] >> 6;
963 crypt = ieee->crypt[idx];
964#ifdef NOT_YET
965 sta = NULL;
966
967 /* Use station specific key to override default keys if the
968 * receiver address is a unicast address ("individual RA"). If
969 * bcrx_sta_key parameter is set, station specific key is used
970 * even with broad/multicast targets (this is against IEEE
971 * 802.11, but makes it easier to use different keys with
972 * stations that do not support WEP key mapping). */
973
974 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
975 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
976 &sta);
977#endif
978
979 /* allow NULL decrypt to indicate an station specific override
980 * for default encryption */
bdcca44e 981 if (crypt && (!crypt->ops || !crypt->ops->decrypt_mpdu))
8fc8598e
JC		 982 crypt = NULL;
983
984 if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
985 /* This seems to be triggered by some (multicast?)
986 * frames from other than current BSS, so just drop the
987 * frames silently instead of filling system log with
988 * these reports. */
989 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
0ee9f67c
JP		 990 " (SA=%pM)\n",
991 hdr->addr2);
8fc8598e
JC		 992 ieee->ieee_stats.rx_discards_undecryptable++;
993 goto rx_dropped;
994 }
995 }
996
997 if (skb->len < IEEE80211_DATA_HDR3_LEN)
998 goto rx_dropped;
999
1000 // if QoS enabled, should check the sequence for each of the AC
f9bd549a 1001 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) {
8fc8598e
JC		 1002 if (is_duplicate_packet(ieee, hdr))
1003 goto rx_dropped;
1004
1005 }
1006 else
1007 {
80b6f0d4 1008 struct rx_ts_record *pRxTS = NULL;
f8628a47 1009 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid);
8fc8598e
JC		 1010 if(GetTs(
1011 ieee,
6ae62698 1012 (struct ts_common_info **) &pRxTS,
8fc8598e 1013 hdr->addr2,
efdcb35a 1014 Frame_QoSTID((u8 *)(skb->data)),
8fc8598e
JC		 1015 RX_DIR,
1016 true))
1017 {
1018
99750726 1019 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->rx_last_frag_num is %d,frag is %d,pRxTS->rx_last_seq_num is %d,seq is %d\n",__func__,pRxTS->rx_last_frag_num,frag,pRxTS->rx_last_seq_num,WLAN_GET_SEQ_SEQ(sc));
d59d6f5d 1020 if ((fc & (1<<11)) &&
99750726 1021 (frag == pRxTS->rx_last_frag_num) &&
01eb0ce4 1022 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->rx_last_seq_num)) {
8fc8598e
JC		 1023 goto rx_dropped;
1024 }
1025 else
1026 {
99750726 1027 pRxTS->rx_last_frag_num = frag;
01eb0ce4 1028 pRxTS->rx_last_seq_num = WLAN_GET_SEQ_SEQ(sc);
8fc8598e
JC		 1029 }
1030 }
1031 else
1032 {
f8628a47 1033 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__);
8fc8598e
JC		 1034 goto rx_dropped;
1035 }
1036 }
8fc8598e
JC		 1037 if (type == IEEE80211_FTYPE_MGMT) {
1038
8fc8598e
JC		 1039
1040 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1041 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1042 goto rx_dropped;
1043 else
1044 goto rx_exit;
1045 }
1046
1047 /* Data frame - extract src/dst addresses */
1048 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
1049 case IEEE80211_FCTL_FROMDS:
1050 memcpy(dst, hdr->addr1, ETH_ALEN);
1051 memcpy(src, hdr->addr3, ETH_ALEN);
1052 memcpy(bssid, hdr->addr2, ETH_ALEN);
1053 break;
1054 case IEEE80211_FCTL_TODS:
1055 memcpy(dst, hdr->addr3, ETH_ALEN);
1056 memcpy(src, hdr->addr2, ETH_ALEN);
1057 memcpy(bssid, hdr->addr1, ETH_ALEN);
1058 break;
1059 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
1060 if (skb->len < IEEE80211_DATA_HDR4_LEN)
1061 goto rx_dropped;
1062 memcpy(dst, hdr->addr3, ETH_ALEN);
1063 memcpy(src, hdr->addr4, ETH_ALEN);
1064 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
1065 break;
5d43dfdb 1066 default:
8fc8598e
JC		 1067 memcpy(dst, hdr->addr1, ETH_ALEN);
1068 memcpy(src, hdr->addr2, ETH_ALEN);
1069 memcpy(bssid, hdr->addr3, ETH_ALEN);
1070 break;
1071 }
1072
1073#ifdef NOT_YET
1074 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
1075 goto rx_dropped;
1076 if (wds) {
1077 skb->dev = dev = wds;
1078 stats = hostap_get_stats(dev);
1079 }
1080
1081 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
1082 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
1083 ieee->stadev &&
1084 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
1085 /* Frame from BSSID of the AP for which we are a client */
1086 skb->dev = dev = ieee->stadev;
1087 stats = hostap_get_stats(dev);
1088 from_assoc_ap = 1;
1089 }
8fc8598e 1090
8fc8598e
JC		 1091 if ((ieee->iw_mode == IW_MODE_MASTER ||
1092 ieee->iw_mode == IW_MODE_REPEAT) &&
1093 !from_assoc_ap) {
1094 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
1095 wds != NULL)) {
1096 case AP_RX_CONTINUE_NOT_AUTHORIZED:
8fc8598e 1097 case AP_RX_CONTINUE:
8fc8598e
JC		 1098 break;
1099 case AP_RX_DROP:
1100 goto rx_dropped;
1101 case AP_RX_EXIT:
1102 goto rx_exit;
1103 }
1104 }
1105#endif
1106 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1107 /* Nullfunc frames may have PS-bit set, so they must be passed to
1108 * hostap_handle_sta_rx() before being dropped here. */
1109 if (stype != IEEE80211_STYPE_DATA &&
1110 stype != IEEE80211_STYPE_DATA_CFACK &&
1111 stype != IEEE80211_STYPE_DATA_CFPOLL &&
1112 stype != IEEE80211_STYPE_DATA_CFACKPOLL&&
1113 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4
1114 ) {
1115 if (stype != IEEE80211_STYPE_NULLFUNC)
1116 IEEE80211_DEBUG_DROP(
1117 "RX: dropped data frame "
1118 "with no data (type=0x%02x, "
1119 "subtype=0x%02x, len=%d)\n",
1120 type, stype, skb->len);
1121 goto rx_dropped;
1122 }
fdc64a9e
SH		 1123 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1124 goto rx_dropped;
8fc8598e
JC		 1125
1126 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1127
1128 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1129 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
1130 {
1131 printk("decrypt frame error\n");
1132 goto rx_dropped;
1133 }
1134
1135
5c2918a5 1136 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1137
1138 /* skb: hdr + (possibly fragmented) plaintext payload */
1139 // PR: FIXME: hostap has additional conditions in the "if" below:
1140 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1141 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
1142 int flen;
1143 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
1144 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1145
1146 if (!frag_skb) {
1147 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
1148 "Rx cannot get skb from fragment "
1149 "cache (morefrag=%d seq=%u frag=%u)\n",
1150 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
1151 WLAN_GET_SEQ_SEQ(sc), frag);
1152 goto rx_dropped;
1153 }
1154 flen = skb->len;
1155 if (frag != 0)
1156 flen -= hdrlen;
1157
1158 if (frag_skb->tail + flen > frag_skb->end) {
1159 printk(KERN_WARNING "%s: host decrypted and "
1160 "reassembled frame did not fit skb\n",
1161 dev->name);
1162 ieee80211_frag_cache_invalidate(ieee, hdr);
1163 goto rx_dropped;
1164 }
1165
1166 if (frag == 0) {
1167 /* copy first fragment (including full headers) into
1168 * beginning of the fragment cache skb */
59ae1d12 1169 skb_put_data(frag_skb, skb->data, flen);
8fc8598e
JC		 1170 } else {
1171 /* append frame payload to the end of the fragment
1172 * cache skb */
59ae1d12 1173 skb_put_data(frag_skb, skb->data + hdrlen, flen);
8fc8598e
JC		 1174 }
1175 dev_kfree_skb_any(skb);
1176 skb = NULL;
1177
1178 if (fc & IEEE80211_FCTL_MOREFRAGS) {
1179 /* more fragments expected - leave the skb in fragment
1180 * cache for now; it will be delivered to upper layers
1181 * after all fragments have been received */
1182 goto rx_exit;
1183 }
1184
1185 /* this was the last fragment and the frame will be
1186 * delivered, so remove skb from fragment cache */
1187 skb = frag_skb;
5c2918a5 1188 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1189 ieee80211_frag_cache_invalidate(ieee, hdr);
1190 }
1191
1192 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1193 * encrypted/authenticated */
1194 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1195 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
1196 {
1197 printk("==>decrypt msdu error\n");
1198 goto rx_dropped;
1199 }
1200
1201 //added by amy for AP roaming
1202 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1203 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1204
5c2918a5 1205 hdr = (struct rtl_80211_hdr_4addr *) skb->data;
8fc8598e
JC		 1206 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
1207 if (/*ieee->ieee802_1x &&*/
1208 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1209
1210#ifdef CONFIG_IEEE80211_DEBUG
1211 /* pass unencrypted EAPOL frames even if encryption is
1212 * configured */
1213 struct eapol *eap = (struct eapol *)(skb->data +
1214 24);
1215 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1216 eap_get_type(eap->type));
1217#endif
1218 } else {
1219 IEEE80211_DEBUG_DROP(
1220 "encryption configured, but RX "
0ee9f67c
JP		 1221 "frame not encrypted (SA=%pM)\n",
1222 hdr->addr2);
8fc8598e
JC		 1223 goto rx_dropped;
1224 }
1225 }
1226
1227#ifdef CONFIG_IEEE80211_DEBUG
1228 if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
1229 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1230 struct eapol *eap = (struct eapol *)(skb->data +
1231 24);
1232 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1233 eap_get_type(eap->type));
1234 }
1235#endif
1236
1237 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
1238 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1239 IEEE80211_DEBUG_DROP(
1240 "dropped unencrypted RX data "
0ee9f67c 1241 "frame from %pM"
8fc8598e 1242 " (drop_unencrypted=1)\n",
0ee9f67c 1243 hdr->addr2);
8fc8598e
JC		 1244 goto rx_dropped;
1245 }
1246/*
1247 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1248 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1249 }
1250*/
1251//added by amy for reorder
dde48b99 1252 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
14fc4235 1253 && !is_multicast_ether_addr(hdr->addr1))
8fc8598e
JC		 1254 {
1255 TID = Frame_QoSTID(skb->data);
1256 SeqNum = WLAN_GET_SEQ_SEQ(sc);
6ae62698 1257 GetTs(ieee,(struct ts_common_info **) &pTS,hdr->addr2,TID,RX_DIR,true);
dde48b99 1258 if (TID !=0 && TID !=3)
8fc8598e
JC		 1259 {
1260 ieee->bis_any_nonbepkts = true;
1261 }
1262 }
8fc8598e
JC		 1263//added by amy for reorder
1264 /* skb: hdr + (possible reassembled) full plaintext payload */
8fc8598e 1265 //ethertype = (payload[6] << 8) | payload[7];
32414878 1266 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC);
61645cc3 1267 if (!rxb)
8fc8598e 1268 goto rx_dropped;
8fc8598e
JC		 1269 /* to parse amsdu packets */
1270 /* qos data packets & reserved bit is 1 */
0b4ef0a6 1271 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) {
8fc8598e
JC		 1272 /* only to free rxb, and not submit the packets to upper layer */
1273 for(i =0; i < rxb->nr_subframes; i++) {
1274 dev_kfree_skb(rxb->subframes[i]);
1275 }
1276 kfree(rxb);
1277 rxb = NULL;
1278 goto rx_dropped;
1279 }
1280
1281//added by amy for reorder
bdcca44e 1282 if (!ieee->pHTInfo->bCurRxReorderEnable || !pTS) {
8fc8598e
JC		 1283//added by amy for reorder
1284 for(i = 0; i<rxb->nr_subframes; i++) {
1285 struct sk_buff *sub_skb = rxb->subframes[i];
1286
1287 if (sub_skb) {
1288 /* convert hdr + possible LLC headers into Ethernet header */
1289 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1290 if (sub_skb->len >= 8 &&
1291 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1292 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1293 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1294 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1295 * replace EtherType */
1296 skb_pull(sub_skb, SNAP_SIZE);
1297 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1298 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1299 } else {
1300 u16 len;
1301 /* Leave Ethernet header part of hdr and full payload */
86d7726d 1302 len = be16_to_cpu(htons(sub_skb->len));
8fc8598e
JC		 1303 memcpy(skb_push(sub_skb, 2), &len, 2);
1304 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1305 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1306 }
1307
1308 stats->rx_packets++;
1309 stats->rx_bytes += sub_skb->len;
dde48b99 1310 if (is_multicast_ether_addr(dst)) {
8fc8598e
JC		 1311 stats->multicast++;
1312 }
1313
1314 /* Indicat the packets to upper layer */
8fc8598e
JC		 1315 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1316 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1317 sub_skb->dev = dev;
1318 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1319 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1320 ieee->last_rx_ps_time = jiffies;
8fc8598e
JC		 1321 netif_rx(sub_skb);
1322 }
1323 }
1324 kfree(rxb);
1325 rxb = NULL;
1326
1327 }
1328 else
1329 {
f8628a47 1330 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
8fc8598e
JC		 1331 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1332 }
1333#ifndef JOHN_NOCPY
1334 dev_kfree_skb(skb);
1335#endif
1336
1337 rx_exit:
1338#ifdef NOT_YET
1339 if (sta)
1340 hostap_handle_sta_release(sta);
1341#endif
1342 return 1;
1343
1344 rx_dropped:
e72714fb
IM		 1345 kfree(rxb);
1346 rxb = NULL;
8fc8598e
JC		 1347 stats->rx_dropped++;
1348
1349 /* Returning 0 indicates to caller that we have not handled the SKB--
1350 * so it is still allocated and can be used again by underlying
1351 * hardware as a DMA target */
1352 return 0;
1353}
539b4f72 1354EXPORT_SYMBOL(ieee80211_rx);
8fc8598e
JC		 1355
1356#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1357
1358static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1359
1360/*
25985edc 1361* Make the structure we read from the beacon packet to have
8fc8598e
JC		 1362* the right values
1363*/
1364static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
fdc64a9e 1365 *info_element, int sub_type)
8fc8598e
JC		 1366{
1367
fdc64a9e
SH		 1368 if (info_element->qui_subtype != sub_type)
1369 return -1;
1370 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1371 return -1;
1372 if (info_element->qui_type != QOS_OUI_TYPE)
1373 return -1;
1374 if (info_element->version != QOS_VERSION_1)
1375 return -1;
8fc8598e 1376
fdc64a9e 1377 return 0;
8fc8598e
JC		 1378}
1379
1380
1381/*
1382 * Parse a QoS parameter element
1383 */
1384static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
fdc64a9e
SH		 1385 *element_param, struct ieee80211_info_element
1386 *info_element)
8fc8598e 1387{
fdc64a9e
SH		 1388 int ret = 0;
1389 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
1390
1391 if ((info_element == NULL) || (element_param == NULL))
1392 return -1;
1393
1394 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1395 memcpy(element_param->info_element.qui, info_element->data,
1396 info_element->len);
1397 element_param->info_element.elementID = info_element->id;
1398 element_param->info_element.length = info_element->len;
1399 } else
1400 ret = -1;
1401 if (ret == 0)
1402 ret = ieee80211_verify_qos_info(&element_param->info_element,
1403 QOS_OUI_PARAM_SUB_TYPE);
1404 return ret;
8fc8598e
JC		 1405}
1406
1407/*
1408 * Parse a QoS information element
1409 */
1410static int ieee80211_read_qos_info_element(struct
fdc64a9e
SH		 1411 ieee80211_qos_information_element
1412 *element_info, struct ieee80211_info_element
1413 *info_element)
8fc8598e 1414{
fdc64a9e
SH		 1415 int ret = 0;
1416 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
1417
bdcca44e 1418 if (!element_info)
fdc64a9e 1419 return -1;
bdcca44e 1420 if (!info_element)
fdc64a9e
SH		 1421 return -1;
1422
1423 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1424 memcpy(element_info->qui, info_element->data,
1425 info_element->len);
1426 element_info->elementID = info_element->id;
1427 element_info->length = info_element->len;
1428 } else
1429 ret = -1;
1430
1431 if (ret == 0)
1432 ret = ieee80211_verify_qos_info(element_info,
1433 QOS_OUI_INFO_SUB_TYPE);
1434 return ret;
8fc8598e
JC		 1435}
1436
1437
1438/*
1439 * Write QoS parameters from the ac parameters.
1440 */
1441static int ieee80211_qos_convert_ac_to_parameters(struct
fdc64a9e
SH		 1442 ieee80211_qos_parameter_info
1443 *param_elm, struct
1444 ieee80211_qos_parameters
1445 *qos_param)
8fc8598e 1446{
fdc64a9e
SH		 1447 int i;
1448 struct ieee80211_qos_ac_parameter *ac_params;
8fc8598e 1449 u8 aci;
fdc64a9e
SH		 1450 //u8 cw_min;
1451 //u8 cw_max;
8fc8598e 1452
fdc64a9e
SH		 1453 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1454 ac_params = &(param_elm->ac_params_record[i]);
8fc8598e
JC		 1455
1456 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1457
1458 if(aci >= QOS_QUEUE_NUM)
1459 continue;
fdc64a9e 1460 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
8fc8598e
JC		 1461
1462 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
fdc64a9e 1463 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci];
8fc8598e 1464
86d7726d
JJ		 1465 qos_param->cw_min[aci] =
1466 cpu_to_le16(ac_params->ecw_min_max & 0x0F);
8fc8598e 1467
86d7726d
JJ		 1468 qos_param->cw_max[aci] =
1469 cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4);
8fc8598e 1470
fdc64a9e
SH		 1471 qos_param->flag[aci] =
1472 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
86d7726d 1473 qos_param->tx_op_limit[aci] = ac_params->tx_op_limit;
fdc64a9e 1474 }
4764ca98 1475 return 0;
8fc8598e
JC		 1476}
1477
1478/*
1479 * we have a generic data element which it may contain QoS information or
1480 * parameters element. check the information element length to decide
1481 * which type to read
1482 */
1483static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
fdc64a9e
SH		 1484 *info_element,
1485 struct ieee80211_network *network)
8fc8598e 1486{
fdc64a9e
SH		 1487 int rc = 0;
1488 struct ieee80211_qos_parameters *qos_param = NULL;
1489 struct ieee80211_qos_information_element qos_info_element;
1490
1491 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
1492
1493 if (rc == 0) {
1494 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1495 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1496 } else {
1497 struct ieee80211_qos_parameter_info param_element;
1498
1499 rc = ieee80211_read_qos_param_element(&param_element,
1500 info_element);
1501 if (rc == 0) {
1502 qos_param = &(network->qos_data.parameters);
1503 ieee80211_qos_convert_ac_to_parameters(&param_element,
1504 qos_param);
1505 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1506 network->qos_data.param_count =
1507 param_element.info_element.ac_info & 0x0F;
1508 }
1509 }
1510
1511 if (rc == 0) {
1512 IEEE80211_DEBUG_QOS("QoS is supported\n");
1513 network->qos_data.supported = 1;
1514 }
1515 return rc;
8fc8598e
JC		 1516}
1517
1518#ifdef CONFIG_IEEE80211_DEBUG
1519#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1520
1521static const char *get_info_element_string(u16 id)
1522{
fdc64a9e
SH		 1523 switch (id) {
1524 MFIE_STRING(SSID);
1525 MFIE_STRING(RATES);
1526 MFIE_STRING(FH_SET);
1527 MFIE_STRING(DS_SET);
1528 MFIE_STRING(CF_SET);
1529 MFIE_STRING(TIM);
1530 MFIE_STRING(IBSS_SET);
1531 MFIE_STRING(COUNTRY);
1532 MFIE_STRING(HOP_PARAMS);
1533 MFIE_STRING(HOP_TABLE);
1534 MFIE_STRING(REQUEST);
1535 MFIE_STRING(CHALLENGE);
1536 MFIE_STRING(POWER_CONSTRAINT);
1537 MFIE_STRING(POWER_CAPABILITY);
1538 MFIE_STRING(TPC_REQUEST);
1539 MFIE_STRING(TPC_REPORT);
1540 MFIE_STRING(SUPP_CHANNELS);
1541 MFIE_STRING(CSA);
1542 MFIE_STRING(MEASURE_REQUEST);
1543 MFIE_STRING(MEASURE_REPORT);
1544 MFIE_STRING(QUIET);
1545 MFIE_STRING(IBSS_DFS);
1546 // MFIE_STRING(ERP_INFO);
1547 MFIE_STRING(RSN);
1548 MFIE_STRING(RATES_EX);
1549 MFIE_STRING(GENERIC);
1550 MFIE_STRING(QOS_PARAMETER);
1551 default:
1552 return "UNKNOWN";
1553 }
8fc8598e
JC		 1554}
1555#endif
1556
8fc8598e
JC		 1557static inline void ieee80211_extract_country_ie(
1558 struct ieee80211_device *ieee,
1559 struct ieee80211_info_element *info_element,
1560 struct ieee80211_network *network,
ea77527a 1561 u8 *addr2
8fc8598e
JC		 1562)
1563{
dde48b99 1564 if (IS_DOT11D_ENABLE(ieee))
8fc8598e 1565 {
dde48b99 1566 if (info_element->len!= 0)
8fc8598e
JC		 1567 {
1568 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1569 network->CountryIeLen = info_element->len;
1570
dde48b99 1571 if (!IS_COUNTRY_IE_VALID(ieee))
8fc8598e 1572 {
d1f91e04 1573 dot11d_update_country_ie(ieee, addr2, info_element->len, info_element->data);
8fc8598e
JC		 1574 }
1575 }
1576
1577 //
1578 // 070305, rcnjko: I update country IE watch dog here because
1579 // some AP (e.g. Cisco 1242) don't include country IE in their
1580 // probe response frame.
1581 //
dde48b99 1582 if (IS_EQUAL_CIE_SRC(ieee, addr2) )
8fc8598e
JC		 1583 {
1584 UPDATE_CIE_WATCHDOG(ieee);
1585 }
1586 }
1587
1588}
8fc8598e
JC		 1589
1590int ieee80211_parse_info_param(struct ieee80211_device *ieee,
1591 struct ieee80211_info_element *info_element,
1592 u16 length,
1593 struct ieee80211_network *network,
1594 struct ieee80211_rx_stats *stats)
1595{
1596 u8 i;
1597 short offset;
fdc64a9e 1598 u16 tmp_htcap_len=0;
8fc8598e
JC		 1599 u16 tmp_htinfo_len=0;
1600 u16 ht_realtek_agg_len=0;
1601 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1602// u16 broadcom_len = 0;
1603#ifdef CONFIG_IEEE80211_DEBUG
1604 char rates_str[64];
1605 char *p;
1606#endif
1607
1608 while (length >= sizeof(*info_element)) {
1609 if (sizeof(*info_element) + info_element->len > length) {
1610 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1611 "info_element->len + 2 > left : "
1612 "info_element->len+2=%zd left=%d, id=%d.\n",
1613 info_element->len +
1614 sizeof(*info_element),
1615 length, info_element->id);
1616 /* We stop processing but don't return an error here
1617 * because some misbehaviour APs break this rule. ie.
1618 * Orinoco AP1000. */
1619 break;
1620 }
1621
1622 switch (info_element->id) {
1623 case MFIE_TYPE_SSID:
1624 if (ieee80211_is_empty_essid(info_element->data,
1625 info_element->len)) {
1626 network->flags |= NETWORK_EMPTY_ESSID;
1627 break;
1628 }
1629
1630 network->ssid_len = min(info_element->len,
1631 (u8) IW_ESSID_MAX_SIZE);
1632 memcpy(network->ssid, info_element->data, network->ssid_len);
1633 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1634 memset(network->ssid + network->ssid_len, 0,
1635 IW_ESSID_MAX_SIZE - network->ssid_len);
1636
1637 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1638 network->ssid, network->ssid_len);
1639 break;
1640
1641 case MFIE_TYPE_RATES:
1642#ifdef CONFIG_IEEE80211_DEBUG
1643 p = rates_str;
1644#endif
1645 network->rates_len = min(info_element->len,
1646 MAX_RATES_LENGTH);
1647 for (i = 0; i < network->rates_len; i++) {
1648 network->rates[i] = info_element->data[i];
1649#ifdef CONFIG_IEEE80211_DEBUG
1650 p += snprintf(p, sizeof(rates_str) -
1651 (p - rates_str), "%02X ",
1652 network->rates[i]);
1653#endif
1654 if (ieee80211_is_ofdm_rate
1655 (info_element->data[i])) {
1656 network->flags |= NETWORK_HAS_OFDM;
1657 if (info_element->data[i] &
1658 IEEE80211_BASIC_RATE_MASK)
1659 network->flags &=
1660 ~NETWORK_HAS_CCK;
1661 }
1662 }
1663
1664 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1665 rates_str, network->rates_len);
1666 break;
1667
1668 case MFIE_TYPE_RATES_EX:
1669#ifdef CONFIG_IEEE80211_DEBUG
1670 p = rates_str;
1671#endif
1672 network->rates_ex_len = min(info_element->len,
1673 MAX_RATES_EX_LENGTH);
1674 for (i = 0; i < network->rates_ex_len; i++) {
1675 network->rates_ex[i] = info_element->data[i];
1676#ifdef CONFIG_IEEE80211_DEBUG
1677 p += snprintf(p, sizeof(rates_str) -
1678 (p - rates_str), "%02X ",
c4151700 1679 network->rates_ex[i]);
8fc8598e
JC		 1680#endif
1681 if (ieee80211_is_ofdm_rate
1682 (info_element->data[i])) {
1683 network->flags |= NETWORK_HAS_OFDM;
1684 if (info_element->data[i] &
1685 IEEE80211_BASIC_RATE_MASK)
1686 network->flags &=
1687 ~NETWORK_HAS_CCK;
1688 }
1689 }
1690
1691 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1692 rates_str, network->rates_ex_len);
1693 break;
1694
1695 case MFIE_TYPE_DS_SET:
1696 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1697 info_element->data[0]);
1698 network->channel = info_element->data[0];
1699 break;
1700
1701 case MFIE_TYPE_FH_SET:
1702 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1703 break;
1704
1705 case MFIE_TYPE_CF_SET:
1706 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1707 break;
1708
1709 case MFIE_TYPE_TIM:
1710 if(info_element->len < 4)
1711 break;
1712
1713 network->tim.tim_count = info_element->data[0];
1714 network->tim.tim_period = info_element->data[1];
1715
fdc64a9e
SH		 1716 network->dtim_period = info_element->data[1];
1717 if(ieee->state != IEEE80211_LINKED)
1718 break;
8fc8598e 1719
fdc64a9e
SH		 1720 network->last_dtim_sta_time[0] = stats->mac_time[0];
1721 network->last_dtim_sta_time[1] = stats->mac_time[1];
8fc8598e 1722
fdc64a9e 1723 network->dtim_data = IEEE80211_DTIM_VALID;
8fc8598e 1724
fdc64a9e
SH		 1725 if(info_element->data[0] != 0)
1726 break;
8fc8598e 1727
fdc64a9e
SH		 1728 if(info_element->data[2] & 1)
1729 network->dtim_data |= IEEE80211_DTIM_MBCAST;
8fc8598e 1730
fdc64a9e 1731 offset = (info_element->data[2] >> 1)*2;
8fc8598e 1732
fdc64a9e
SH		 1733 if(ieee->assoc_id < 8*offset ||
1734 ieee->assoc_id > 8*(offset + info_element->len -3))
8fc8598e 1735
fdc64a9e 1736 break;
8fc8598e 1737
fdc64a9e 1738 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ;
8fc8598e 1739
fdc64a9e
SH		 1740 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
1741 network->dtim_data |= IEEE80211_DTIM_UCAST;
8fc8598e
JC		 1742
1743 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1744 break;
1745
1746 case MFIE_TYPE_ERP:
1747 network->erp_value = info_element->data[0];
1748 network->flags |= NETWORK_HAS_ERP_VALUE;
1749 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1750 network->erp_value);
1751 break;
1752 case MFIE_TYPE_IBSS_SET:
1753 network->atim_window = info_element->data[0];
1754 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1755 network->atim_window);
1756 break;
1757
1758 case MFIE_TYPE_CHALLENGE:
1759 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1760 break;
1761
1762 case MFIE_TYPE_GENERIC:
1763 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1764 info_element->len);
1765 if (!ieee80211_parse_qos_info_param_IE(info_element,
1766 network))
1767 break;
1768
1769 if (info_element->len >= 4 &&
1770 info_element->data[0] == 0x00 &&
1771 info_element->data[1] == 0x50 &&
1772 info_element->data[2] == 0xf2 &&
1773 info_element->data[3] == 0x01) {
1774 network->wpa_ie_len = min(info_element->len + 2,
1775 MAX_WPA_IE_LEN);
1776 memcpy(network->wpa_ie, info_element,
1777 network->wpa_ie_len);
1778 break;
1779 }
1780
1781#ifdef THOMAS_TURBO
fdc64a9e
SH		 1782 if (info_element->len == 7 &&
1783 info_element->data[0] == 0x00 &&
1784 info_element->data[1] == 0xe0 &&
1785 info_element->data[2] == 0x4c &&
1786 info_element->data[3] == 0x01 &&
1787 info_element->data[4] == 0x02) {
1788 network->Turbo_Enable = 1;
1789 }
8fc8598e
JC		 1790#endif
1791
fdc64a9e 1792 //for HTcap and HTinfo parameters
8fc8598e
JC		 1793 if(tmp_htcap_len == 0){
1794 if(info_element->len >= 4 &&
1795 info_element->data[0] == 0x00 &&
1796 info_element->data[1] == 0x90 &&
1797 info_element->data[2] == 0x4c &&
1798 info_element->data[3] == 0x033){
1799
1800 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
35997ff0
SH		 1801 if(tmp_htcap_len != 0){
1802 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
8fc8598e
JC		 1803 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1804 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1805 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
35997ff0 1806 }
8fc8598e
JC		 1807 }
1808 if(tmp_htcap_len != 0)
1809 network->bssht.bdSupportHT = true;
1810 else
1811 network->bssht.bdSupportHT = false;
1812 }
1813
1814
1815 if(tmp_htinfo_len == 0){
1816 if(info_element->len >= 4 &&
1817 info_element->data[0] == 0x00 &&
35997ff0
SH		 1818 info_element->data[1] == 0x90 &&
1819 info_element->data[2] == 0x4c &&
1820 info_element->data[3] == 0x034){
8fc8598e
JC		 1821
1822 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
1823 if(tmp_htinfo_len != 0){
1824 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1825 if(tmp_htinfo_len){
1826 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
1827 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
1828 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
1829 }
1830
1831 }
1832
1833 }
1834 }
1835
1836 if(ieee->aggregation){
1837 if(network->bssht.bdSupportHT){
1838 if(info_element->len >= 4 &&
1839 info_element->data[0] == 0x00 &&
1840 info_element->data[1] == 0xe0 &&
1841 info_element->data[2] == 0x4c &&
1842 info_element->data[3] == 0x02){
1843
1844 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN);
1845 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len);
1846
1847 }
1848 if(ht_realtek_agg_len >= 5){
1849 network->bssht.bdRT2RTAggregation = true;
1850
1851 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1852 network->bssht.bdRT2RTLongSlotTime = true;
1853 }
1854 }
1855
1856 }
1857
1858 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1859 {
dde48b99 1860 if ((info_element->len >= 3 &&
8fc8598e
JC		 1861 info_element->data[0] == 0x00 &&
1862 info_element->data[1] == 0x05 &&
1863 info_element->data[2] == 0xb5) ||
1864 (info_element->len >= 3 &&
1865 info_element->data[0] == 0x00 &&
1866 info_element->data[1] == 0x0a &&
1867 info_element->data[2] == 0xf7) ||
1868 (info_element->len >= 3 &&
1869 info_element->data[0] == 0x00 &&
1870 info_element->data[1] == 0x10 &&
1871 info_element->data[2] == 0x18)){
1872
1873 network->broadcom_cap_exist = true;
1874
1875 }
1876 }
8fc8598e
JC		 1877 if(info_element->len >= 3 &&
1878 info_element->data[0] == 0x00 &&
1879 info_element->data[1] == 0x0c &&
1880 info_element->data[2] == 0x43)
1881 {
1882 network->ralink_cap_exist = true;
1883 }
1884 else
1885 network->ralink_cap_exist = false;
1886 //added by amy for atheros AP
1887 if((info_element->len >= 3 &&
1888 info_element->data[0] == 0x00 &&
1889 info_element->data[1] == 0x03 &&
1890 info_element->data[2] == 0x7f) ||
1891 (info_element->len >= 3 &&
1892 info_element->data[0] == 0x00 &&
1893 info_element->data[1] == 0x13 &&
1894 info_element->data[2] == 0x74))
1895 {
f8628a47 1896 printk("========>%s(): athros AP is exist\n",__func__);
8fc8598e
JC		 1897 network->atheros_cap_exist = true;
1898 }
1899 else
1900 network->atheros_cap_exist = false;
1901
1902 if(info_element->len >= 3 &&
1903 info_element->data[0] == 0x00 &&
1904 info_element->data[1] == 0x40 &&
1905 info_element->data[2] == 0x96)
1906 {
1907 network->cisco_cap_exist = true;
1908 }
1909 else
1910 network->cisco_cap_exist = false;
1911 //added by amy for LEAP of cisco
dde48b99 1912 if (info_element->len > 4 &&
8fc8598e
JC		 1913 info_element->data[0] == 0x00 &&
1914 info_element->data[1] == 0x40 &&
1915 info_element->data[2] == 0x96 &&
1916 info_element->data[3] == 0x01)
1917 {
1918 if(info_element->len == 6)
1919 {
1920 memcpy(network->CcxRmState, &info_element[4], 2);
1921 if(network->CcxRmState[0] != 0)
1922 {
1923 network->bCcxRmEnable = true;
1924 }
1925 else
1926 network->bCcxRmEnable = false;
1927 //
1928 // CCXv4 Table 59-1 MBSSID Masks.
1929 //
1930 network->MBssidMask = network->CcxRmState[1] & 0x07;
1931 if(network->MBssidMask != 0)
1932 {
1933 network->bMBssidValid = true;
1934 network->MBssidMask = 0xff << (network->MBssidMask);
ace3c2a2 1935 ether_addr_copy(network->MBssid, network->bssid);
8fc8598e
JC		 1936 network->MBssid[5] &= network->MBssidMask;
1937 }
1938 else
1939 {
1940 network->bMBssidValid = false;
1941 }
1942 }
1943 else
1944 {
1945 network->bCcxRmEnable = false;
1946 }
1947 }
dde48b99 1948 if (info_element->len > 4 &&
8fc8598e
JC		 1949 info_element->data[0] == 0x00 &&
1950 info_element->data[1] == 0x40 &&
1951 info_element->data[2] == 0x96 &&
1952 info_element->data[3] == 0x03)
1953 {
1954 if(info_element->len == 5)
1955 {
1956 network->bWithCcxVerNum = true;
1957 network->BssCcxVerNumber = info_element->data[4];
1958 }
1959 else
1960 {
1961 network->bWithCcxVerNum = false;
1962 network->BssCcxVerNumber = 0;
1963 }
1964 }
1965 break;
1966
1967 case MFIE_TYPE_RSN:
1968 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1969 info_element->len);
1970 network->rsn_ie_len = min(info_element->len + 2,
1971 MAX_WPA_IE_LEN);
1972 memcpy(network->rsn_ie, info_element,
1973 network->rsn_ie_len);
1974 break;
1975
fdc64a9e 1976 //HT related element.
8fc8598e
JC		 1977 case MFIE_TYPE_HT_CAP:
1978 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
1979 info_element->len);
1980 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN);
1981 if(tmp_htcap_len != 0){
1982 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1983 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\
1984 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len;
1985 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen);
1986
1987 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
1988 // windows driver will update WMM parameters each beacon received once connected
fdc64a9e 1989 // Linux driver is a bit different.
8fc8598e
JC		 1990 network->bssht.bdSupportHT = true;
1991 }
1992 else
1993 network->bssht.bdSupportHT = false;
1994 break;
1995
1996
1997 case MFIE_TYPE_HT_INFO:
1998 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
1999 info_element->len);
2000 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN);
2001 if(tmp_htinfo_len){
2002 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2003 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\
2004 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len;
2005 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen);
2006 }
2007 break;
2008
2009 case MFIE_TYPE_AIRONET:
2010 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2011 info_element->len);
2012 if(info_element->len >IE_CISCO_FLAG_POSITION)
2013 {
2014 network->bWithAironetIE = true;
2015
2016 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2017 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2018 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2019 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
2020 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
2021 {
35997ff0 2022 network->bCkipSupported = true;
8fc8598e
JC		 2023 }
2024 else
2025 {
2026 network->bCkipSupported = false;
2027 }
2028 }
2029 else
2030 {
2031 network->bWithAironetIE = false;
35997ff0 2032 network->bCkipSupported = false;
8fc8598e
JC		 2033 }
2034 break;
2035 case MFIE_TYPE_QOS_PARAMETER:
2036 printk(KERN_ERR
2037 "QoS Error need to parse QOS_PARAMETER IE\n");
2038 break;
2039
8fc8598e
JC		 2040 case MFIE_TYPE_COUNTRY:
2041 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2042 info_element->len);
8fc8598e
JC		 2043 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP
2044 break;
8fc8598e 2045/* TODO */
8fc8598e
JC		 2046 default:
2047 IEEE80211_DEBUG_MGMT
2048 ("Unsupported info element: %s (%d)\n",
2049 get_info_element_string(info_element->id),
2050 info_element->id);
2051 break;
2052 }
2053
2054 length -= sizeof(*info_element) + info_element->len;
2055 info_element =
2056 (struct ieee80211_info_element *)&info_element->
2057 data[info_element->len];
2058 }
2059
2060 if(!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2061 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation)
2062 {
2063 network->unknown_cap_exist = true;
2064 }
2065 else
2066 {
2067 network->unknown_cap_exist = false;
2068 }
2069 return 0;
2070}
2071
2072static inline u8 ieee80211_SignalStrengthTranslate(
2073 u8 CurrSS
2074 )
2075{
2076 u8 RetSS;
2077
2078 // Step 1. Scale mapping.
2079 if(CurrSS >= 71 && CurrSS <= 100)
2080 {
2081 RetSS = 90 + ((CurrSS - 70) / 3);
2082 }
2083 else if(CurrSS >= 41 && CurrSS <= 70)
2084 {
2085 RetSS = 78 + ((CurrSS - 40) / 3);
2086 }
2087 else if(CurrSS >= 31 && CurrSS <= 40)
2088 {
2089 RetSS = 66 + (CurrSS - 30);
2090 }
2091 else if(CurrSS >= 21 && CurrSS <= 30)
2092 {
2093 RetSS = 54 + (CurrSS - 20);
2094 }
2095 else if(CurrSS >= 5 && CurrSS <= 20)
2096 {
2097 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2098 }
2099 else if(CurrSS == 4)
2100 {
2101 RetSS = 36;
2102 }
2103 else if(CurrSS == 3)
2104 {
2105 RetSS = 27;
2106 }
2107 else if(CurrSS == 2)
2108 {
2109 RetSS = 18;
2110 }
2111 else if(CurrSS == 1)
2112 {
2113 RetSS = 9;
2114 }
2115 else
2116 {
2117 RetSS = CurrSS;
2118 }
2119 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2120
2121 // Step 2. Smoothing.
2122
2123 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2124
2125 return RetSS;
2126}
2127
57a88529
TB		 2128/* 0-100 index */
2129static long ieee80211_translate_todbm(u8 signal_strength_index)
8fc8598e
JC		 2130{
2131 long signal_power; // in dBm.
2132
2133 // Translate to dBm (x=0.5y-95).
2134 signal_power = (long)((signal_strength_index + 1) >> 1);
2135 signal_power -= 95;
2136
2137 return signal_power;
2138}
2139
2140static inline int ieee80211_network_init(
2141 struct ieee80211_device *ieee,
2142 struct ieee80211_probe_response *beacon,
2143 struct ieee80211_network *network,
2144 struct ieee80211_rx_stats *stats)
2145{
2146#ifdef CONFIG_IEEE80211_DEBUG
2147 //char rates_str[64];
2148 //char *p;
2149#endif
2150
fdc64a9e
SH		 2151 network->qos_data.active = 0;
2152 network->qos_data.supported = 0;
2153 network->qos_data.param_count = 0;
2154 network->qos_data.old_param_count = 0;
8fc8598e
JC		 2155
2156 /* Pull out fixed field data */
2157 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2158 network->capability = le16_to_cpu(beacon->capability);
2159 network->last_scanned = jiffies;
2160 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2161 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1a324441 2162 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
8fc8598e
JC		 2163 /* Where to pull this? beacon->listen_interval;*/
2164 network->listen_interval = 0x0A;
2165 network->rates_len = network->rates_ex_len = 0;
2166 network->last_associate = 0;
2167 network->ssid_len = 0;
2168 network->flags = 0;
2169 network->atim_window = 0;
2170 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
fdc64a9e 2171 0x3 : 0x0;
8fc8598e 2172 network->berp_info_valid = false;
fdc64a9e 2173 network->broadcom_cap_exist = false;
8fc8598e
JC		 2174 network->ralink_cap_exist = false;
2175 network->atheros_cap_exist = false;
2176 network->cisco_cap_exist = false;
2177 network->unknown_cap_exist = false;
2178#ifdef THOMAS_TURBO
2179 network->Turbo_Enable = 0;
2180#endif
8fc8598e
JC		 2181 network->CountryIeLen = 0;
2182 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
8fc8598e
JC		 2183//Initialize HT parameters
2184 //ieee80211_ht_initialize(&network->bssht);
2185 HTInitializeBssDesc(&network->bssht);
2186 if (stats->freq == IEEE80211_52GHZ_BAND) {
2187 /* for A band (No DS info) */
2188 network->channel = stats->received_channel;
2189 } else
2190 network->flags |= NETWORK_HAS_CCK;
2191
35997ff0
SH		 2192 network->wpa_ie_len = 0;
2193 network->rsn_ie_len = 0;
8fc8598e 2194
fdc64a9e
SH		 2195 if (ieee80211_parse_info_param
2196 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats))
2197 return 1;
8fc8598e
JC		 2198
2199 network->mode = 0;
2200 if (stats->freq == IEEE80211_52GHZ_BAND)
2201 network->mode = IEEE_A;
2202 else {
2203 if (network->flags & NETWORK_HAS_OFDM)
2204 network->mode |= IEEE_G;
2205 if (network->flags & NETWORK_HAS_CCK)
2206 network->mode |= IEEE_B;
2207 }
2208
2209 if (network->mode == 0) {
0ee9f67c 2210 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
8fc8598e
JC		 2211 "network.\n",
2212 escape_essid(network->ssid,
2213 network->ssid_len),
0ee9f67c 2214 network->bssid);
8fc8598e
JC		 2215 return 1;
2216 }
2217
2218 if(network->bssht.bdSupportHT){
2219 if(network->mode == IEEE_A)
2220 network->mode = IEEE_N_5G;
2221 else if(network->mode & (IEEE_G | IEEE_B))
2222 network->mode = IEEE_N_24G;
2223 }
2224 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
2225 network->flags |= NETWORK_EMPTY_ESSID;
2226
8fc8598e
JC		 2227 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2228 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2229 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25;
8fc8598e
JC		 2230
2231 memcpy(&network->stats, stats, sizeof(network->stats));
2232
2233 return 0;
2234}
2235
2236static inline int is_same_network(struct ieee80211_network *src,
ea77527a 2237 struct ieee80211_network *dst, struct ieee80211_device *ieee)
8fc8598e
JC		 2238{
2239 /* A network is only a duplicate if the channel, BSSID, ESSID
2240 * and the capability field (in particular IBSS and BSS) all match.
2241 * We treat all <hidden> with the same BSSID and channel
2242 * as one network */
2243 return //((src->ssid_len == dst->ssid_len) &&
2244 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2245 (src->channel == dst->channel) &&
2246 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2247 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2248 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) &&
2249 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2250 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2251 ((src->capability & WLAN_CAPABILITY_BSS) ==
2252 (dst->capability & WLAN_CAPABILITY_BSS)));
2253}
2254
2255static inline void update_network(struct ieee80211_network *dst,
2256 struct ieee80211_network *src)
2257{
2258 int qos_active;
2259 u8 old_param;
2260
2261 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
2262 dst->capability = src->capability;
2263 memcpy(dst->rates, src->rates, src->rates_len);
2264 dst->rates_len = src->rates_len;
2265 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2266 dst->rates_ex_len = src->rates_ex_len;
dde48b99 2267 if (src->ssid_len > 0)
8fc8598e
JC		 2268 {
2269 memset(dst->ssid, 0, dst->ssid_len);
2270 dst->ssid_len = src->ssid_len;
2271 memcpy(dst->ssid, src->ssid, src->ssid_len);
2272 }
2273 dst->mode = src->mode;
2274 dst->flags = src->flags;
2275 dst->time_stamp[0] = src->time_stamp[0];
2276 dst->time_stamp[1] = src->time_stamp[1];
2277 if (src->flags & NETWORK_HAS_ERP_VALUE)
2278 {
2279 dst->erp_value = src->erp_value;
2280 dst->berp_info_valid = src->berp_info_valid = true;
2281 }
2282 dst->beacon_interval = src->beacon_interval;
2283 dst->listen_interval = src->listen_interval;
2284 dst->atim_window = src->atim_window;
2285 dst->dtim_period = src->dtim_period;
2286 dst->dtim_data = src->dtim_data;
2287 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
2288 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
2289 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters));
2290
fdc64a9e 2291 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
8fc8598e
JC		 2292 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2293 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen;
2294 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen);
2295 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen;
2296 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen);
2297 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2298 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2299 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2300 dst->ralink_cap_exist = src->ralink_cap_exist;
2301 dst->atheros_cap_exist = src->atheros_cap_exist;
2302 dst->cisco_cap_exist = src->cisco_cap_exist;
2303 dst->unknown_cap_exist = src->unknown_cap_exist;
2304 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2305 dst->wpa_ie_len = src->wpa_ie_len;
2306 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2307 dst->rsn_ie_len = src->rsn_ie_len;
2308
2309 dst->last_scanned = jiffies;
2310 /* qos related parameters */
2311 //qos_active = src->qos_data.active;
2312 qos_active = dst->qos_data.active;
2313 //old_param = dst->qos_data.old_param_count;
2314 old_param = dst->qos_data.param_count;
2315 if(dst->flags & NETWORK_HAS_QOS_MASK)
2316 memcpy(&dst->qos_data, &src->qos_data,
2317 sizeof(struct ieee80211_qos_data));
2318 else {
2319 dst->qos_data.supported = src->qos_data.supported;
2320 dst->qos_data.param_count = src->qos_data.param_count;
2321 }
2322
dde48b99 2323 if (dst->qos_data.supported == 1) {
8fc8598e
JC		 2324 dst->QoS_Enable = 1;
2325 if(dst->ssid_len)
2326 IEEE80211_DEBUG_QOS
2327 ("QoS the network %s is QoS supported\n",
2328 dst->ssid);
2329 else
2330 IEEE80211_DEBUG_QOS
2331 ("QoS the network is QoS supported\n");
2332 }
2333 dst->qos_data.active = qos_active;
2334 dst->qos_data.old_param_count = old_param;
2335
2336 /* dst->last_associate is not overwritten */
8fc8598e 2337 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame.
7c6e3f24
PG		 2338 if (src->wmm_param[0].aci_aifsn|| \
2339 src->wmm_param[1].aci_aifsn|| \
2340 src->wmm_param[2].aci_aifsn|| \
2341 src->wmm_param[3].aci_aifsn) {
8fc8598e
JC		 2342 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2343 }
2344 //dst->QoS_Enable = src->QoS_Enable;
8fc8598e
JC		 2345#ifdef THOMAS_TURBO
2346 dst->Turbo_Enable = src->Turbo_Enable;
2347#endif
2348
8fc8598e
JC		 2349 dst->CountryIeLen = src->CountryIeLen;
2350 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
8fc8598e
JC		 2351
2352 //added by amy for LEAP
2353 dst->bWithAironetIE = src->bWithAironetIE;
2354 dst->bCkipSupported = src->bCkipSupported;
0b4ef0a6 2355 memcpy(dst->CcxRmState, src->CcxRmState, 2);
8fc8598e
JC		 2356 dst->bCcxRmEnable = src->bCcxRmEnable;
2357 dst->MBssidMask = src->MBssidMask;
2358 dst->bMBssidValid = src->bMBssidValid;
0b4ef0a6 2359 memcpy(dst->MBssid, src->MBssid, 6);
8fc8598e
JC		 2360 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2361 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2362
2363}
2364
2365static inline int is_beacon(__le16 fc)
2366{
2367 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
2368}
2369
2370static inline void ieee80211_process_probe_response(
2371 struct ieee80211_device *ieee,
2372 struct ieee80211_probe_response *beacon,
2373 struct ieee80211_rx_stats *stats)
2374{
4596351d 2375 struct ieee80211_network *network;
8fc8598e
JC		 2376 struct ieee80211_network *target;
2377 struct ieee80211_network *oldest = NULL;
2378#ifdef CONFIG_IEEE80211_DEBUG
2379 struct ieee80211_info_element *info_element = &beacon->info_element[0];
2380#endif
2f55aa54 2381 int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl));
8fc8598e
JC		 2382 unsigned long flags;
2383 short renew;
2f55aa54 2384 u16 capability;
8fc8598e
JC		 2385 //u8 wmm_info;
2386
4596351d
AB		 2387 network = kzalloc(sizeof(*network), GFP_ATOMIC);
2388 if (!network)
2389 goto out;
2390
2f55aa54 2391 capability = le16_to_cpu(beacon->capability);
8fc8598e 2392 IEEE80211_DEBUG_SCAN(
0ee9f67c 2393 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
8fc8598e 2394 escape_essid(info_element->data, info_element->len),
0ee9f67c 2395 beacon->header.addr3,
93610762
PK		 2396 (capability & BIT(0xf)) ? '1' : '0',
2397 (capability & BIT(0xe)) ? '1' : '0',
2398 (capability & BIT(0xd)) ? '1' : '0',
2399 (capability & BIT(0xc)) ? '1' : '0',
2400 (capability & BIT(0xb)) ? '1' : '0',
2401 (capability & BIT(0xa)) ? '1' : '0',
2402 (capability & BIT(0x9)) ? '1' : '0',
2403 (capability & BIT(0x8)) ? '1' : '0',
2404 (capability & BIT(0x7)) ? '1' : '0',
2405 (capability & BIT(0x6)) ? '1' : '0',
2406 (capability & BIT(0x5)) ? '1' : '0',
2407 (capability & BIT(0x4)) ? '1' : '0',
2408 (capability & BIT(0x3)) ? '1' : '0',
2409 (capability & BIT(0x2)) ? '1' : '0',
2410 (capability & BIT(0x1)) ? '1' : '0',
2411 (capability & BIT(0x0)) ? '1' : '0');
8fc8598e 2412
4596351d 2413 if (ieee80211_network_init(ieee, beacon, network, stats)) {
0ee9f67c 2414 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
8fc8598e
JC		 2415 escape_essid(info_element->data,
2416 info_element->len),
0ee9f67c 2417 beacon->header.addr3,
2f55aa54 2418 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e 2419 "PROBE RESPONSE" : "BEACON");
4596351d 2420 goto out;
8fc8598e
JC		 2421 }
2422
8fc8598e
JC		 2423 // For Asus EeePc request,
2424 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2425 // wireless adapter should follow the country code.
2426 // (2) If there is no any country code in beacon,
2427 // then wireless adapter should do active scan from ch1~11 and
2428 // passive scan from ch12~14
2429
b56b1438 2430 if (!is_legal_channel(ieee, network->channel))
4596351d 2431 goto out;
dde48b99 2432 if (ieee->bGlobalDomain)
8fc8598e 2433 {
2f55aa54 2434 if (fc == IEEE80211_STYPE_PROBE_RESP)
8fc8598e
JC		 2435 {
2436 // Case 1: Country code
2437 if(IS_COUNTRY_IE_VALID(ieee) )
2438 {
b56b1438 2439 if (!is_legal_channel(ieee, network->channel)) {
4596351d
AB		 2440 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network->channel);
2441 goto out;
8fc8598e
JC		 2442 }
2443 }
2444 // Case 2: No any country code.
2445 else
2446 {
2447 // Filter over channel ch12~14
4596351d 2448 if (network->channel > 11)
8fc8598e 2449 {
4596351d
AB		 2450 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network->channel);
2451 goto out;
8fc8598e
JC		 2452 }
2453 }
2454 }
2455 else
2456 {
2457 // Case 1: Country code
2458 if(IS_COUNTRY_IE_VALID(ieee) )
2459 {
b56b1438 2460 if (!is_legal_channel(ieee, network->channel)) {
4596351d
AB		 2461 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network->channel);
2462 goto out;
8fc8598e
JC		 2463 }
2464 }
2465 // Case 2: No any country code.
2466 else
2467 {
2468 // Filter over channel ch12~14
4596351d 2469 if (network->channel > 14)
8fc8598e 2470 {
4596351d
AB		 2471 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network->channel);
2472 goto out;
8fc8598e
JC		 2473 }
2474 }
2475 }
2476 }
8fc8598e
JC		 2477
2478 /* The network parsed correctly -- so now we scan our known networks
2479 * to see if we can find it in our list.
2480 *
2481 * NOTE: This search is definitely not optimized. Once its doing
2482 * the "right thing" we'll optimize it for efficiency if
2483 * necessary */
2484
2485 /* Search for this entry in the list and update it if it is
2486 * already there. */
2487
2488 spin_lock_irqsave(&ieee->lock, flags);
2489
4596351d
AB		 2490 if (is_same_network(&ieee->current_network, network, ieee)) {
2491 update_network(&ieee->current_network, network);
dde48b99 2492 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G)
8fc8598e
JC		 2493 && ieee->current_network.berp_info_valid){
2494 if(ieee->current_network.erp_value& ERP_UseProtection)
2495 ieee->current_network.buseprotection = true;
2496 else
2497 ieee->current_network.buseprotection = false;
2498 }
2499 if(is_beacon(beacon->header.frame_ctl))
2500 {
2501 if(ieee->state == IEEE80211_LINKED)
2502 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2503 }
2504 else //hidden AP
4596351d 2505 network->flags = (~NETWORK_EMPTY_ESSID & network->flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags);
8fc8598e
JC		 2506 }
2507
2508 list_for_each_entry(target, &ieee->network_list, list) {
4596351d 2509 if (is_same_network(target, network, ieee))
8fc8598e
JC		 2510 break;
2511 if ((oldest == NULL) ||
2512 (target->last_scanned < oldest->last_scanned))
2513 oldest = target;
2514 }
2515
2516 /* If we didn't find a match, then get a new network slot to initialize
2517 * with this beacon's information */
2518 if (&target->list == &ieee->network_list) {
2519 if (list_empty(&ieee->network_free_list)) {
2520 /* If there are no more slots, expire the oldest */
2521 list_del(&oldest->list);
2522 target = oldest;
0ee9f67c 2523 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
8fc8598e
JC		 2524 "network list.\n",
2525 escape_essid(target->ssid,
2526 target->ssid_len),
0ee9f67c 2527 target->bssid);
8fc8598e
JC		 2528 } else {
2529 /* Otherwise just pull from the free list */
2530 target = list_entry(ieee->network_free_list.next,
2531 struct ieee80211_network, list);
2532 list_del(ieee->network_free_list.next);
2533 }
2534
2535
2536#ifdef CONFIG_IEEE80211_DEBUG
0ee9f67c 2537 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
4596351d
AB		 2538 escape_essid(network->ssid,
2539 network->ssid_len),
2540 network->bssid,
2f55aa54 2541 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e
JC		 2542 "PROBE RESPONSE" : "BEACON");
2543#endif
4596351d 2544 memcpy(target, network, sizeof(*target));
8fc8598e
JC		 2545 list_add_tail(&target->list, &ieee->network_list);
2546 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
4596351d 2547 ieee80211_softmac_new_net(ieee,network);
8fc8598e 2548 } else {
0ee9f67c 2549 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
8fc8598e
JC		 2550 escape_essid(target->ssid,
2551 target->ssid_len),
0ee9f67c 2552 target->bssid,
2f55aa54 2553 fc == IEEE80211_STYPE_PROBE_RESP ?
8fc8598e
JC		 2554 "PROBE RESPONSE" : "BEACON");
2555
2556 /* we have an entry and we are going to update it. But this entry may
2557 * be already expired. In this case we do the same as we found a new
2558 * net and call the new_net handler
2559 */
2560 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies);
2561 //YJ,add,080819,for hidden ap
2562 if(is_beacon(beacon->header.frame_ctl) == 0)
4596351d
AB		 2563 network->flags = (~NETWORK_EMPTY_ESSID & network->flags)|(NETWORK_EMPTY_ESSID & target->flags);
2564 //if(strncmp(network->ssid, "linksys-c",9) == 0)
2565 // printk("====>2 network->ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network->ssid, network->flags, target->ssid, target->flags);
2566 if(((network->flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \
2567 && (((network->ssid_len > 0) && (strncmp(target->ssid, network->ssid, network->ssid_len)))\
2568 ||((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		 2569 renew = 1;
2570 //YJ,add,080819,for hidden ap,end
2571
4596351d 2572 update_network(target, network);
8fc8598e 2573 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
4596351d 2574 ieee80211_softmac_new_net(ieee,network);
8fc8598e
JC		 2575 }
2576
2577 spin_unlock_irqrestore(&ieee->lock, flags);
4596351d 2578 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, network, ieee)&&\
8fc8598e 2579 (ieee->state == IEEE80211_LINKED)) {
dde48b99 2580 if (ieee->handle_beacon != NULL) {
8fc8598e
JC		 2581 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
2582 }
2583 }
4596351d
AB		 2584
2585out:
2586 kfree(network);
8fc8598e
JC		 2587}
2588
2589void ieee80211_rx_mgt(struct ieee80211_device *ieee,
5c2918a5 2590 struct rtl_80211_hdr_4addr *header,
8fc8598e
JC		 2591 struct ieee80211_rx_stats *stats)
2592{
2f55aa54 2593 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
8fc8598e
JC		 2594
2595 case IEEE80211_STYPE_BEACON:
2596 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2f55aa54 2597 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
8fc8598e
JC		 2598 IEEE80211_DEBUG_SCAN("Beacon\n");
2599 ieee80211_process_probe_response(
2600 ieee, (struct ieee80211_probe_response *)header, stats);
2601 break;
2602
2603 case IEEE80211_STYPE_PROBE_RESP:
2604 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2f55aa54 2605 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
8fc8598e
JC		 2606 IEEE80211_DEBUG_SCAN("Probe response\n");
2607 ieee80211_process_probe_response(
2608 ieee, (struct ieee80211_probe_response *)header, stats);
2609 break;
2610
2611 }
2612}
8fc8598e 2613EXPORT_SYMBOL(ieee80211_rx_mgt);
Linux 6.x block layer and io_uring tree(s)