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5f53d8ca JC |
1 | /* |
2 | * Original code based Host AP (software wireless LAN access point) driver | |
3 | * for Intersil Prism2/2.5/3 - hostap.o module, common routines | |
4 | * | |
5 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
6 | * <jkmaline@cc.hut.fi> | |
7 | * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
8 | * Copyright (c) 2004, Intel Corporation | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. See README and COPYING for | |
13 | * more details. | |
14 | ****************************************************************************** | |
15 | ||
16 | Few modifications for Realtek's Wi-Fi drivers by | |
17 | Andrea Merello <andreamrl@tiscali.it> | |
18 | ||
19 | A special thanks goes to Realtek for their support ! | |
20 | ||
21 | ******************************************************************************/ | |
22 | ||
23 | ||
24 | #include <linux/compiler.h> | |
25 | //#include <linux/config.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/if_arp.h> | |
28 | #include <linux/in6.h> | |
29 | #include <linux/in.h> | |
30 | #include <linux/ip.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/netdevice.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/proc_fs.h> | |
36 | #include <linux/skbuff.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/tcp.h> | |
39 | #include <linux/types.h> | |
5f53d8ca JC |
40 | #include <linux/wireless.h> |
41 | #include <linux/etherdevice.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include <linux/ctype.h> | |
44 | ||
45 | #include "ieee80211.h" | |
5f53d8ca | 46 | #include "dot11d.h" |
5f53d8ca JC |
47 | static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, |
48 | struct sk_buff *skb, | |
49 | struct ieee80211_rx_stats *rx_stats) | |
50 | { | |
51 | struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data; | |
52 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
53 | ||
54 | skb->dev = ieee->dev; | |
5f53d8ca | 55 | skb_reset_mac_header(skb); |
5f53d8ca JC |
56 | |
57 | skb_pull(skb, ieee80211_get_hdrlen(fc)); | |
58 | skb->pkt_type = PACKET_OTHERHOST; | |
59 | skb->protocol = __constant_htons(ETH_P_80211_RAW); | |
60 | memset(skb->cb, 0, sizeof(skb->cb)); | |
61 | netif_rx(skb); | |
62 | } | |
63 | ||
64 | ||
65 | /* Called only as a tasklet (software IRQ) */ | |
66 | static struct ieee80211_frag_entry * | |
67 | ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, | |
68 | unsigned int frag, u8 tid,u8 *src, u8 *dst) | |
69 | { | |
70 | struct ieee80211_frag_entry *entry; | |
71 | int i; | |
72 | ||
73 | for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { | |
74 | entry = &ieee->frag_cache[tid][i]; | |
75 | if (entry->skb != NULL && | |
76 | time_after(jiffies, entry->first_frag_time + 2 * HZ)) { | |
77 | IEEE80211_DEBUG_FRAG( | |
78 | "expiring fragment cache entry " | |
79 | "seq=%u last_frag=%u\n", | |
80 | entry->seq, entry->last_frag); | |
81 | dev_kfree_skb_any(entry->skb); | |
82 | entry->skb = NULL; | |
83 | } | |
84 | ||
85 | if (entry->skb != NULL && entry->seq == seq && | |
86 | (entry->last_frag + 1 == frag || frag == -1) && | |
87 | memcmp(entry->src_addr, src, ETH_ALEN) == 0 && | |
88 | memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) | |
89 | return entry; | |
90 | } | |
91 | ||
92 | return NULL; | |
93 | } | |
94 | ||
95 | /* Called only as a tasklet (software IRQ) */ | |
96 | static struct sk_buff * | |
97 | ieee80211_frag_cache_get(struct ieee80211_device *ieee, | |
98 | struct ieee80211_hdr_4addr *hdr) | |
99 | { | |
100 | struct sk_buff *skb = NULL; | |
101 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
102 | u16 sc = le16_to_cpu(hdr->seq_ctl); | |
103 | unsigned int frag = WLAN_GET_SEQ_FRAG(sc); | |
104 | unsigned int seq = WLAN_GET_SEQ_SEQ(sc); | |
105 | struct ieee80211_frag_entry *entry; | |
106 | struct ieee80211_hdr_3addrqos *hdr_3addrqos; | |
107 | struct ieee80211_hdr_4addrqos *hdr_4addrqos; | |
108 | u8 tid; | |
109 | ||
110 | if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
111 | hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; | |
112 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
113 | tid = UP2AC(tid); | |
114 | tid ++; | |
115 | } else if (IEEE80211_QOS_HAS_SEQ(fc)) { | |
116 | hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; | |
117 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
118 | tid = UP2AC(tid); | |
119 | tid ++; | |
120 | } else { | |
121 | tid = 0; | |
122 | } | |
123 | ||
124 | if (frag == 0) { | |
125 | /* Reserve enough space to fit maximum frame length */ | |
126 | skb = dev_alloc_skb(ieee->dev->mtu + | |
127 | sizeof(struct ieee80211_hdr_4addr) + | |
128 | 8 /* LLC */ + | |
129 | 2 /* alignment */ + | |
130 | 8 /* WEP */ + | |
131 | ETH_ALEN /* WDS */ + | |
132 | (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); | |
133 | if (skb == NULL) | |
134 | return NULL; | |
135 | ||
136 | entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; | |
137 | ieee->frag_next_idx[tid]++; | |
138 | if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) | |
139 | ieee->frag_next_idx[tid] = 0; | |
140 | ||
141 | if (entry->skb != NULL) | |
142 | dev_kfree_skb_any(entry->skb); | |
143 | ||
144 | entry->first_frag_time = jiffies; | |
145 | entry->seq = seq; | |
146 | entry->last_frag = frag; | |
147 | entry->skb = skb; | |
148 | memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); | |
149 | memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); | |
150 | } else { | |
151 | /* received a fragment of a frame for which the head fragment | |
152 | * should have already been received */ | |
153 | entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, | |
154 | hdr->addr1); | |
155 | if (entry != NULL) { | |
156 | entry->last_frag = frag; | |
157 | skb = entry->skb; | |
158 | } | |
159 | } | |
160 | ||
161 | return skb; | |
162 | } | |
163 | ||
164 | ||
165 | /* Called only as a tasklet (software IRQ) */ | |
166 | static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, | |
167 | struct ieee80211_hdr_4addr *hdr) | |
168 | { | |
169 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
170 | u16 sc = le16_to_cpu(hdr->seq_ctl); | |
171 | unsigned int seq = WLAN_GET_SEQ_SEQ(sc); | |
172 | struct ieee80211_frag_entry *entry; | |
173 | struct ieee80211_hdr_3addrqos *hdr_3addrqos; | |
174 | struct ieee80211_hdr_4addrqos *hdr_4addrqos; | |
175 | u8 tid; | |
176 | ||
177 | if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
178 | hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; | |
179 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
180 | tid = UP2AC(tid); | |
181 | tid ++; | |
182 | } else if (IEEE80211_QOS_HAS_SEQ(fc)) { | |
183 | hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; | |
184 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
185 | tid = UP2AC(tid); | |
186 | tid ++; | |
187 | } else { | |
188 | tid = 0; | |
189 | } | |
190 | ||
191 | entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2, | |
192 | hdr->addr1); | |
193 | ||
194 | if (entry == NULL) { | |
195 | IEEE80211_DEBUG_FRAG( | |
196 | "could not invalidate fragment cache " | |
197 | "entry (seq=%u)\n", seq); | |
198 | return -1; | |
199 | } | |
200 | ||
201 | entry->skb = NULL; | |
202 | return 0; | |
203 | } | |
204 | ||
205 | ||
206 | ||
207 | /* ieee80211_rx_frame_mgtmt | |
208 | * | |
209 | * Responsible for handling management control frames | |
210 | * | |
55c7d5fc | 211 | * Called by ieee80211_rtl_rx */ |
5f53d8ca JC |
212 | static inline int |
213 | ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, | |
214 | struct ieee80211_rx_stats *rx_stats, u16 type, | |
215 | u16 stype) | |
216 | { | |
217 | /* On the struct stats definition there is written that | |
218 | * this is not mandatory.... but seems that the probe | |
219 | * response parser uses it | |
220 | */ | |
221 | struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data; | |
222 | ||
223 | rx_stats->len = skb->len; | |
224 | ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats); | |
225 | //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) | |
226 | if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames | |
227 | { | |
228 | dev_kfree_skb_any(skb); | |
229 | return 0; | |
230 | } | |
231 | ||
232 | ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); | |
233 | ||
234 | dev_kfree_skb_any(skb); | |
235 | ||
236 | return 0; | |
237 | ||
5f53d8ca JC |
238 | } |
239 | ||
240 | ||
241 | ||
242 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ | |
243 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ | |
244 | static unsigned char rfc1042_header[] = | |
245 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; | |
246 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ | |
247 | static unsigned char bridge_tunnel_header[] = | |
248 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; | |
249 | /* No encapsulation header if EtherType < 0x600 (=length) */ | |
250 | ||
251 | /* Called by ieee80211_rx_frame_decrypt */ | |
252 | static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, | |
253 | struct sk_buff *skb, size_t hdrlen) | |
254 | { | |
255 | struct net_device *dev = ieee->dev; | |
256 | u16 fc, ethertype; | |
257 | struct ieee80211_hdr_4addr *hdr; | |
258 | u8 *pos; | |
259 | ||
260 | if (skb->len < 24) | |
261 | return 0; | |
262 | ||
263 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
264 | fc = le16_to_cpu(hdr->frame_ctl); | |
265 | ||
266 | /* check that the frame is unicast frame to us */ | |
267 | if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
268 | IEEE80211_FCTL_TODS && | |
269 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && | |
270 | memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
271 | /* ToDS frame with own addr BSSID and DA */ | |
272 | } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
273 | IEEE80211_FCTL_FROMDS && | |
274 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
275 | /* FromDS frame with own addr as DA */ | |
276 | } else | |
277 | return 0; | |
278 | ||
279 | if (skb->len < 24 + 8) | |
280 | return 0; | |
281 | ||
282 | /* check for port access entity Ethernet type */ | |
283 | // pos = skb->data + 24; | |
284 | pos = skb->data + hdrlen; | |
285 | ethertype = (pos[6] << 8) | pos[7]; | |
286 | if (ethertype == ETH_P_PAE) | |
287 | return 1; | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
55c7d5fc | 292 | /* Called only as a tasklet (software IRQ), by ieee80211_rtl_rx */ |
5f53d8ca JC |
293 | static inline int |
294 | ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb, | |
295 | struct ieee80211_crypt_data *crypt) | |
296 | { | |
297 | struct ieee80211_hdr_4addr *hdr; | |
298 | int res, hdrlen; | |
299 | ||
300 | if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) | |
301 | return 0; | |
302 | #if 1 | |
303 | if (ieee->hwsec_active) | |
304 | { | |
305 | cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); | |
306 | tcb_desc->bHwSec = 1; | |
307 | } | |
308 | #endif | |
309 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
310 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); | |
311 | ||
312 | #ifdef CONFIG_IEEE80211_CRYPT_TKIP | |
313 | if (ieee->tkip_countermeasures && | |
314 | strcmp(crypt->ops->name, "TKIP") == 0) { | |
315 | if (net_ratelimit()) { | |
316 | printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " | |
317 | "received packet from " MAC_FMT "\n", | |
318 | ieee->dev->name, MAC_ARG(hdr->addr2)); | |
319 | } | |
320 | return -1; | |
321 | } | |
322 | #endif | |
323 | ||
324 | atomic_inc(&crypt->refcnt); | |
325 | res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); | |
326 | atomic_dec(&crypt->refcnt); | |
327 | if (res < 0) { | |
328 | IEEE80211_DEBUG_DROP( | |
329 | "decryption failed (SA=" MAC_FMT | |
330 | ") res=%d\n", MAC_ARG(hdr->addr2), res); | |
331 | if (res == -2) | |
332 | IEEE80211_DEBUG_DROP("Decryption failed ICV " | |
333 | "mismatch (key %d)\n", | |
334 | skb->data[hdrlen + 3] >> 6); | |
335 | ieee->ieee_stats.rx_discards_undecryptable++; | |
336 | return -1; | |
337 | } | |
338 | ||
339 | return res; | |
340 | } | |
341 | ||
342 | ||
343 | /* Called only as a tasklet (software IRQ), by ieee80211_rx */ | |
344 | static inline int | |
345 | ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb, | |
346 | int keyidx, struct ieee80211_crypt_data *crypt) | |
347 | { | |
348 | struct ieee80211_hdr_4addr *hdr; | |
349 | int res, hdrlen; | |
350 | ||
351 | if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) | |
352 | return 0; | |
353 | if (ieee->hwsec_active) | |
354 | { | |
355 | cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); | |
356 | tcb_desc->bHwSec = 1; | |
357 | } | |
358 | ||
359 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
360 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); | |
361 | ||
362 | atomic_inc(&crypt->refcnt); | |
363 | res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); | |
364 | atomic_dec(&crypt->refcnt); | |
365 | if (res < 0) { | |
366 | printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" | |
367 | " (SA=" MAC_FMT " keyidx=%d)\n", | |
368 | ieee->dev->name, MAC_ARG(hdr->addr2), keyidx); | |
369 | return -1; | |
370 | } | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
375 | ||
376 | /* this function is stolen from ipw2200 driver*/ | |
377 | #define IEEE_PACKET_RETRY_TIME (5*HZ) | |
378 | static int is_duplicate_packet(struct ieee80211_device *ieee, | |
379 | struct ieee80211_hdr_4addr *header) | |
380 | { | |
381 | u16 fc = le16_to_cpu(header->frame_ctl); | |
382 | u16 sc = le16_to_cpu(header->seq_ctl); | |
383 | u16 seq = WLAN_GET_SEQ_SEQ(sc); | |
384 | u16 frag = WLAN_GET_SEQ_FRAG(sc); | |
385 | u16 *last_seq, *last_frag; | |
386 | unsigned long *last_time; | |
387 | struct ieee80211_hdr_3addrqos *hdr_3addrqos; | |
388 | struct ieee80211_hdr_4addrqos *hdr_4addrqos; | |
389 | u8 tid; | |
390 | ||
391 | ||
392 | //TO2DS and QoS | |
393 | if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
394 | hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header; | |
395 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
396 | tid = UP2AC(tid); | |
397 | tid ++; | |
398 | } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS | |
399 | hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header; | |
400 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; | |
401 | tid = UP2AC(tid); | |
402 | tid ++; | |
403 | } else { // no QoS | |
404 | tid = 0; | |
405 | } | |
406 | ||
407 | switch (ieee->iw_mode) { | |
408 | case IW_MODE_ADHOC: | |
409 | { | |
410 | struct list_head *p; | |
411 | struct ieee_ibss_seq *entry = NULL; | |
412 | u8 *mac = header->addr2; | |
413 | int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; | |
414 | //for (pos = (head)->next; pos != (head); pos = pos->next) | |
415 | //__list_for_each(p, &ieee->ibss_mac_hash[index]) { | |
416 | list_for_each(p, &ieee->ibss_mac_hash[index]) { | |
417 | entry = list_entry(p, struct ieee_ibss_seq, list); | |
418 | if (!memcmp(entry->mac, mac, ETH_ALEN)) | |
419 | break; | |
420 | } | |
421 | // if (memcmp(entry->mac, mac, ETH_ALEN)){ | |
422 | if (p == &ieee->ibss_mac_hash[index]) { | |
423 | entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); | |
424 | if (!entry) { | |
425 | printk(KERN_WARNING "Cannot malloc new mac entry\n"); | |
426 | return 0; | |
427 | } | |
428 | memcpy(entry->mac, mac, ETH_ALEN); | |
429 | entry->seq_num[tid] = seq; | |
430 | entry->frag_num[tid] = frag; | |
431 | entry->packet_time[tid] = jiffies; | |
432 | list_add(&entry->list, &ieee->ibss_mac_hash[index]); | |
433 | return 0; | |
434 | } | |
435 | last_seq = &entry->seq_num[tid]; | |
436 | last_frag = &entry->frag_num[tid]; | |
437 | last_time = &entry->packet_time[tid]; | |
438 | break; | |
439 | } | |
440 | ||
441 | case IW_MODE_INFRA: | |
442 | last_seq = &ieee->last_rxseq_num[tid]; | |
443 | last_frag = &ieee->last_rxfrag_num[tid]; | |
444 | last_time = &ieee->last_packet_time[tid]; | |
445 | ||
446 | break; | |
447 | default: | |
448 | return 0; | |
449 | } | |
450 | ||
451 | // if(tid != 0) { | |
452 | // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); | |
453 | // } | |
454 | if ((*last_seq == seq) && | |
455 | time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { | |
456 | if (*last_frag == frag){ | |
457 | //printk(KERN_WARNING "[1] go drop!\n"); | |
458 | goto drop; | |
459 | ||
460 | } | |
461 | if (*last_frag + 1 != frag) | |
462 | /* out-of-order fragment */ | |
463 | //printk(KERN_WARNING "[2] go drop!\n"); | |
464 | goto drop; | |
465 | } else | |
466 | *last_seq = seq; | |
467 | ||
468 | *last_frag = frag; | |
469 | *last_time = jiffies; | |
470 | return 0; | |
471 | ||
472 | drop: | |
473 | // BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); | |
474 | // printk("DUP\n"); | |
475 | ||
476 | return 1; | |
477 | } | |
478 | bool | |
479 | AddReorderEntry( | |
480 | PRX_TS_RECORD pTS, | |
481 | PRX_REORDER_ENTRY pReorderEntry | |
482 | ) | |
483 | { | |
484 | struct list_head *pList = &pTS->RxPendingPktList; | |
485 | #if 1 | |
486 | while(pList->next != &pTS->RxPendingPktList) | |
487 | { | |
488 | if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) | |
489 | { | |
490 | pList = pList->next; | |
491 | } | |
492 | else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) | |
493 | { | |
494 | return false; | |
495 | } | |
496 | else | |
497 | { | |
498 | break; | |
499 | } | |
500 | } | |
501 | #endif | |
502 | pReorderEntry->List.next = pList->next; | |
503 | pReorderEntry->List.next->prev = &pReorderEntry->List; | |
504 | pReorderEntry->List.prev = pList; | |
505 | pList->next = &pReorderEntry->List; | |
506 | ||
507 | return true; | |
508 | } | |
509 | ||
510 | void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index) | |
511 | { | |
512 | u8 i = 0 , j=0; | |
513 | u16 ethertype; | |
514 | // if(index > 1) | |
515 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index); | |
516 | for(j = 0; j<index; j++) | |
517 | { | |
518 | //added by amy for reorder | |
519 | struct ieee80211_rxb* prxb = prxbIndicateArray[j]; | |
520 | for(i = 0; i<prxb->nr_subframes; i++) { | |
521 | struct sk_buff *sub_skb = prxb->subframes[i]; | |
522 | ||
523 | /* convert hdr + possible LLC headers into Ethernet header */ | |
524 | ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; | |
525 | if (sub_skb->len >= 8 && | |
526 | ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && | |
527 | ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || | |
528 | memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { | |
529 | /* remove RFC1042 or Bridge-Tunnel encapsulation and | |
530 | * replace EtherType */ | |
531 | skb_pull(sub_skb, SNAP_SIZE); | |
532 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); | |
533 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); | |
534 | } else { | |
535 | u16 len; | |
536 | /* Leave Ethernet header part of hdr and full payload */ | |
537 | len = htons(sub_skb->len); | |
538 | memcpy(skb_push(sub_skb, 2), &len, 2); | |
539 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); | |
540 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); | |
541 | } | |
542 | //stats->rx_packets++; | |
543 | //stats->rx_bytes += sub_skb->len; | |
544 | ||
545 | /* Indicat the packets to upper layer */ | |
546 | if (sub_skb) { | |
547 | //printk("0skb_len(%d)\n", skb->len); | |
548 | sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); | |
549 | memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); | |
550 | sub_skb->dev = ieee->dev; | |
551 | sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ | |
552 | //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ | |
553 | ieee->last_rx_ps_time = jiffies; | |
554 | //printk("1skb_len(%d)\n", skb->len); | |
555 | netif_rx(sub_skb); | |
556 | } | |
557 | } | |
558 | kfree(prxb); | |
559 | prxb = NULL; | |
560 | } | |
561 | } | |
562 | ||
563 | ||
564 | void RxReorderIndicatePacket( struct ieee80211_device *ieee, | |
565 | struct ieee80211_rxb* prxb, | |
566 | PRX_TS_RECORD pTS, | |
567 | u16 SeqNum) | |
568 | { | |
569 | PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; | |
570 | PRX_REORDER_ENTRY pReorderEntry = NULL; | |
571 | struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE]; | |
572 | u8 WinSize = pHTInfo->RxReorderWinSize; | |
573 | u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; | |
574 | u8 index = 0; | |
575 | bool bMatchWinStart = false, bPktInBuf = false; | |
576 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize); | |
5f53d8ca JC |
577 | /* Rx Reorder initialize condition.*/ |
578 | if(pTS->RxIndicateSeq == 0xffff) { | |
579 | pTS->RxIndicateSeq = SeqNum; | |
580 | } | |
581 | ||
582 | /* Drop out the packet which SeqNum is smaller than WinStart */ | |
583 | if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) { | |
584 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", | |
585 | pTS->RxIndicateSeq, SeqNum); | |
586 | pHTInfo->RxReorderDropCounter++; | |
587 | { | |
588 | int i; | |
589 | for(i =0; i < prxb->nr_subframes; i++) { | |
590 | dev_kfree_skb(prxb->subframes[i]); | |
591 | } | |
592 | kfree(prxb); | |
593 | prxb = NULL; | |
594 | } | |
595 | return; | |
596 | } | |
597 | ||
598 | /* | |
599 | * Sliding window manipulation. Conditions includes: | |
600 | * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 | |
601 | * 2. Incoming SeqNum is larger than the WinEnd => Window shift N | |
602 | */ | |
603 | if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { | |
604 | pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; | |
605 | bMatchWinStart = true; | |
606 | } else if(SN_LESS(WinEnd, SeqNum)) { | |
607 | if(SeqNum >= (WinSize - 1)) { | |
608 | pTS->RxIndicateSeq = SeqNum + 1 -WinSize; | |
609 | } else { | |
610 | pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; | |
611 | } | |
612 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
613 | } | |
614 | ||
615 | /* | |
616 | * Indication process. | |
617 | * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets | |
618 | * with the SeqNum smaller than latest WinStart and buffer other packets. | |
619 | */ | |
620 | /* For Rx Reorder condition: | |
621 | * 1. All packets with SeqNum smaller than WinStart => Indicate | |
622 | * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. | |
623 | */ | |
624 | if(bMatchWinStart) { | |
625 | /* Current packet is going to be indicated.*/ | |
626 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ | |
627 | pTS->RxIndicateSeq, SeqNum); | |
628 | prxbIndicateArray[0] = prxb; | |
629 | // printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum); | |
630 | index = 1; | |
631 | } else { | |
632 | /* Current packet is going to be inserted into pending list.*/ | |
633 | //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__); | |
634 | if(!list_empty(&ieee->RxReorder_Unused_List)) { | |
635 | pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); | |
636 | list_del_init(&pReorderEntry->List); | |
637 | ||
638 | /* Make a reorder entry and insert into a the packet list.*/ | |
639 | pReorderEntry->SeqNum = SeqNum; | |
640 | pReorderEntry->prxb = prxb; | |
641 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); | |
642 | ||
643 | #if 1 | |
644 | if(!AddReorderEntry(pTS, pReorderEntry)) { | |
645 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", | |
646 | __FUNCTION__, pTS->RxIndicateSeq, SeqNum); | |
647 | list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); | |
648 | { | |
649 | int i; | |
650 | for(i =0; i < prxb->nr_subframes; i++) { | |
651 | dev_kfree_skb(prxb->subframes[i]); | |
652 | } | |
653 | kfree(prxb); | |
654 | prxb = NULL; | |
655 | } | |
656 | } else { | |
657 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, | |
658 | "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
659 | } | |
660 | #endif | |
661 | } | |
662 | else { | |
663 | /* | |
664 | * Packets are dropped if there is not enough reorder entries. | |
665 | * This part shall be modified!! We can just indicate all the | |
666 | * packets in buffer and get reorder entries. | |
667 | */ | |
668 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); | |
669 | { | |
670 | int i; | |
671 | for(i =0; i < prxb->nr_subframes; i++) { | |
672 | dev_kfree_skb(prxb->subframes[i]); | |
673 | } | |
674 | kfree(prxb); | |
675 | prxb = NULL; | |
676 | } | |
677 | } | |
678 | } | |
679 | ||
680 | /* Check if there is any packet need indicate.*/ | |
681 | while(!list_empty(&pTS->RxPendingPktList)) { | |
682 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__); | |
683 | #if 1 | |
684 | pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); | |
685 | if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || | |
686 | SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) | |
687 | { | |
688 | /* This protect buffer from overflow. */ | |
689 | if(index >= REORDER_WIN_SIZE) { | |
690 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); | |
691 | bPktInBuf = true; | |
692 | break; | |
693 | } | |
694 | ||
695 | list_del_init(&pReorderEntry->List); | |
696 | ||
697 | if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) | |
698 | pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; | |
699 | ||
700 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
701 | prxbIndicateArray[index] = pReorderEntry->prxb; | |
702 | // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); | |
703 | index++; | |
704 | ||
705 | list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); | |
706 | } else { | |
707 | bPktInBuf = true; | |
708 | break; | |
709 | } | |
710 | #endif | |
711 | } | |
712 | ||
713 | /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ | |
714 | if(index>0) { | |
715 | // Cancel previous pending timer. | |
716 | if(timer_pending(&pTS->RxPktPendingTimer)) | |
717 | { | |
718 | del_timer_sync(&pTS->RxPktPendingTimer); | |
719 | } | |
720 | // del_timer_sync(&pTS->RxPktPendingTimer); | |
721 | pTS->RxTimeoutIndicateSeq = 0xffff; | |
722 | ||
723 | // Indicate packets | |
724 | if(index>REORDER_WIN_SIZE){ | |
725 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n"); | |
726 | return; | |
727 | } | |
728 | ieee80211_indicate_packets(ieee, prxbIndicateArray, index); | |
729 | bPktInBuf = false; | |
730 | } | |
731 | ||
732 | #if 1 | |
733 | if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { | |
734 | // Set new pending timer. | |
735 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__); | |
736 | pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; | |
5f53d8ca | 737 | mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime)); |
5f53d8ca JC |
738 | } |
739 | #endif | |
740 | } | |
741 | ||
742 | u8 parse_subframe(struct sk_buff *skb, | |
743 | struct ieee80211_rx_stats *rx_stats, | |
744 | struct ieee80211_rxb *rxb,u8* src,u8* dst) | |
745 | { | |
746 | struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data; | |
747 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
748 | ||
749 | u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr); | |
750 | u16 ChkLength; | |
751 | bool bIsAggregateFrame = false; | |
752 | u16 nSubframe_Length; | |
753 | u8 nPadding_Length = 0; | |
754 | u16 SeqNum=0; | |
755 | ||
756 | struct sk_buff *sub_skb; | |
757 | u8 *data_ptr; | |
758 | /* just for debug purpose */ | |
759 | SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); | |
760 | ||
761 | if((IEEE80211_QOS_HAS_SEQ(fc))&&\ | |
762 | (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { | |
763 | bIsAggregateFrame = true; | |
764 | } | |
765 | ||
766 | if(IEEE80211_QOS_HAS_SEQ(fc)) { | |
767 | LLCOffset += 2; | |
768 | } | |
769 | ||
770 | if(rx_stats->bContainHTC) { | |
771 | LLCOffset += sHTCLng; | |
772 | } | |
773 | //printk("ChkLength = %d\n", LLCOffset); | |
774 | // Null packet, don't indicate it to upper layer | |
775 | ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ | |
776 | ||
777 | if( skb->len <= ChkLength ) { | |
778 | return 0; | |
779 | } | |
780 | ||
781 | skb_pull(skb, LLCOffset); | |
782 | ||
783 | if(!bIsAggregateFrame) { | |
784 | rxb->nr_subframes = 1; | |
785 | #ifdef JOHN_NOCPY | |
786 | rxb->subframes[0] = skb; | |
787 | #else | |
788 | rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC); | |
789 | #endif | |
790 | ||
791 | memcpy(rxb->src,src,ETH_ALEN); | |
792 | memcpy(rxb->dst,dst,ETH_ALEN); | |
793 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len); | |
794 | return 1; | |
795 | } else { | |
796 | rxb->nr_subframes = 0; | |
797 | memcpy(rxb->src,src,ETH_ALEN); | |
798 | memcpy(rxb->dst,dst,ETH_ALEN); | |
799 | while(skb->len > ETHERNET_HEADER_SIZE) { | |
800 | /* Offset 12 denote 2 mac address */ | |
801 | nSubframe_Length = *((u16*)(skb->data + 12)); | |
802 | //==m==>change the length order | |
803 | nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8); | |
804 | ||
805 | if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) { | |
5f53d8ca JC |
806 | printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\ |
807 | __FUNCTION__,rxb->nr_subframes); | |
808 | printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length); | |
809 | printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length); | |
810 | printk("The Packet SeqNum is %d\n",SeqNum); | |
811 | return 0; | |
812 | } | |
813 | ||
814 | /* move the data point to data content */ | |
815 | skb_pull(skb, ETHERNET_HEADER_SIZE); | |
816 | ||
817 | #ifdef JOHN_NOCPY | |
818 | sub_skb = skb_clone(skb, GFP_ATOMIC); | |
819 | sub_skb->len = nSubframe_Length; | |
820 | sub_skb->tail = sub_skb->data + nSubframe_Length; | |
821 | #else | |
822 | /* Allocate new skb for releasing to upper layer */ | |
823 | sub_skb = dev_alloc_skb(nSubframe_Length + 12); | |
824 | skb_reserve(sub_skb, 12); | |
825 | data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length); | |
826 | memcpy(data_ptr,skb->data,nSubframe_Length); | |
827 | #endif | |
828 | rxb->subframes[rxb->nr_subframes++] = sub_skb; | |
829 | if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) { | |
830 | IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n"); | |
831 | break; | |
832 | } | |
833 | skb_pull(skb,nSubframe_Length); | |
834 | ||
835 | if(skb->len != 0) { | |
836 | nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4); | |
837 | if(nPadding_Length == 4) { | |
838 | nPadding_Length = 0; | |
839 | } | |
840 | ||
841 | if(skb->len < nPadding_Length) { | |
842 | return 0; | |
843 | } | |
844 | ||
845 | skb_pull(skb,nPadding_Length); | |
846 | } | |
847 | } | |
848 | #ifdef JOHN_NOCPY | |
849 | dev_kfree_skb(skb); | |
850 | #endif | |
851 | //{just for debug added by david | |
852 | //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes); | |
853 | //} | |
854 | return rxb->nr_subframes; | |
855 | } | |
856 | } | |
857 | ||
858 | /* All received frames are sent to this function. @skb contains the frame in | |
859 | * IEEE 802.11 format, i.e., in the format it was sent over air. | |
860 | * This function is called only as a tasklet (software IRQ). */ | |
55c7d5fc | 861 | int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb, |
5f53d8ca JC |
862 | struct ieee80211_rx_stats *rx_stats) |
863 | { | |
864 | struct net_device *dev = ieee->dev; | |
865 | struct ieee80211_hdr_4addr *hdr; | |
866 | //struct ieee80211_hdr_3addrqos *hdr; | |
867 | ||
868 | size_t hdrlen; | |
869 | u16 fc, type, stype, sc; | |
870 | struct net_device_stats *stats; | |
871 | unsigned int frag; | |
872 | u8 *payload; | |
873 | u16 ethertype; | |
874 | //added by amy for reorder | |
875 | u8 TID = 0; | |
876 | u16 SeqNum = 0; | |
877 | PRX_TS_RECORD pTS = NULL; | |
878 | //bool bIsAggregateFrame = false; | |
879 | //added by amy for reorder | |
5f53d8ca JC |
880 | // u16 qos_ctl = 0; |
881 | u8 dst[ETH_ALEN]; | |
882 | u8 src[ETH_ALEN]; | |
883 | u8 bssid[ETH_ALEN]; | |
884 | struct ieee80211_crypt_data *crypt = NULL; | |
885 | int keyidx = 0; | |
886 | ||
887 | int i; | |
888 | struct ieee80211_rxb* rxb = NULL; | |
889 | // cheat the the hdr type | |
890 | hdr = (struct ieee80211_hdr_4addr *)skb->data; | |
891 | stats = &ieee->stats; | |
892 | ||
893 | if (skb->len < 10) { | |
894 | printk(KERN_INFO "%s: SKB length < 10\n", | |
895 | dev->name); | |
896 | goto rx_dropped; | |
897 | } | |
898 | ||
899 | fc = le16_to_cpu(hdr->frame_ctl); | |
900 | type = WLAN_FC_GET_TYPE(fc); | |
901 | stype = WLAN_FC_GET_STYPE(fc); | |
902 | sc = le16_to_cpu(hdr->seq_ctl); | |
903 | ||
904 | frag = WLAN_GET_SEQ_FRAG(sc); | |
905 | hdrlen = ieee80211_get_hdrlen(fc); | |
906 | ||
907 | if(HTCCheck(ieee, skb->data)) | |
908 | { | |
909 | if(net_ratelimit()) | |
910 | printk("find HTCControl\n"); | |
911 | hdrlen += 4; | |
912 | rx_stats->bContainHTC = 1; | |
913 | } | |
914 | ||
915 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); | |
5f53d8ca | 916 | |
5f53d8ca JC |
917 | if (ieee->iw_mode == IW_MODE_MONITOR) { |
918 | ieee80211_monitor_rx(ieee, skb, rx_stats); | |
919 | stats->rx_packets++; | |
920 | stats->rx_bytes += skb->len; | |
921 | return 1; | |
922 | } | |
3bd709f2 | 923 | |
5f53d8ca JC |
924 | if (ieee->host_decrypt) { |
925 | int idx = 0; | |
926 | if (skb->len >= hdrlen + 3) | |
927 | idx = skb->data[hdrlen + 3] >> 6; | |
928 | crypt = ieee->crypt[idx]; | |
5f53d8ca JC |
929 | |
930 | /* allow NULL decrypt to indicate an station specific override | |
931 | * for default encryption */ | |
932 | if (crypt && (crypt->ops == NULL || | |
933 | crypt->ops->decrypt_mpdu == NULL)) | |
934 | crypt = NULL; | |
935 | ||
936 | if (!crypt && (fc & IEEE80211_FCTL_WEP)) { | |
937 | /* This seems to be triggered by some (multicast?) | |
938 | * frames from other than current BSS, so just drop the | |
939 | * frames silently instead of filling system log with | |
940 | * these reports. */ | |
941 | IEEE80211_DEBUG_DROP("Decryption failed (not set)" | |
942 | " (SA=" MAC_FMT ")\n", | |
943 | MAC_ARG(hdr->addr2)); | |
944 | ieee->ieee_stats.rx_discards_undecryptable++; | |
945 | goto rx_dropped; | |
946 | } | |
947 | } | |
948 | ||
949 | if (skb->len < IEEE80211_DATA_HDR3_LEN) | |
950 | goto rx_dropped; | |
951 | ||
952 | // if QoS enabled, should check the sequence for each of the AC | |
953 | if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){ | |
954 | if (is_duplicate_packet(ieee, hdr)) | |
955 | goto rx_dropped; | |
956 | ||
957 | } | |
958 | else | |
959 | { | |
960 | PRX_TS_RECORD pRxTS = NULL; | |
5f53d8ca JC |
961 | //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid); |
962 | #if 1 | |
963 | if(GetTs( | |
964 | ieee, | |
965 | (PTS_COMMON_INFO*) &pRxTS, | |
966 | hdr->addr2, | |
967 | (u8)Frame_QoSTID((u8*)(skb->data)), | |
968 | RX_DIR, | |
969 | true)) | |
970 | { | |
971 | ||
972 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc)); | |
973 | if( (fc & (1<<11)) && | |
974 | (frag == pRxTS->RxLastFragNum) && | |
975 | (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) ) | |
976 | { | |
977 | goto rx_dropped; | |
978 | } | |
979 | else | |
980 | { | |
981 | pRxTS->RxLastFragNum = frag; | |
982 | pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); | |
983 | } | |
984 | } | |
985 | else | |
986 | { | |
987 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__); | |
988 | goto rx_dropped; | |
989 | } | |
990 | } | |
991 | #endif | |
992 | if (type == IEEE80211_FTYPE_MGMT) { | |
993 | ||
5f53d8ca JC |
994 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); |
995 | if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) | |
996 | goto rx_dropped; | |
997 | else | |
998 | goto rx_exit; | |
999 | } | |
1000 | ||
1001 | /* Data frame - extract src/dst addresses */ | |
1002 | switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { | |
1003 | case IEEE80211_FCTL_FROMDS: | |
1004 | memcpy(dst, hdr->addr1, ETH_ALEN); | |
1005 | memcpy(src, hdr->addr3, ETH_ALEN); | |
1006 | memcpy(bssid, hdr->addr2, ETH_ALEN); | |
1007 | break; | |
1008 | case IEEE80211_FCTL_TODS: | |
1009 | memcpy(dst, hdr->addr3, ETH_ALEN); | |
1010 | memcpy(src, hdr->addr2, ETH_ALEN); | |
1011 | memcpy(bssid, hdr->addr1, ETH_ALEN); | |
1012 | break; | |
1013 | case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: | |
1014 | if (skb->len < IEEE80211_DATA_HDR4_LEN) | |
1015 | goto rx_dropped; | |
1016 | memcpy(dst, hdr->addr3, ETH_ALEN); | |
1017 | memcpy(src, hdr->addr4, ETH_ALEN); | |
1018 | memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); | |
1019 | break; | |
1020 | case 0: | |
1021 | memcpy(dst, hdr->addr1, ETH_ALEN); | |
1022 | memcpy(src, hdr->addr2, ETH_ALEN); | |
1023 | memcpy(bssid, hdr->addr3, ETH_ALEN); | |
1024 | break; | |
1025 | } | |
1026 | ||
5f53d8ca JC |
1027 | |
1028 | dev->last_rx = jiffies; | |
1029 | ||
5f53d8ca JC |
1030 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); |
1031 | /* Nullfunc frames may have PS-bit set, so they must be passed to | |
1032 | * hostap_handle_sta_rx() before being dropped here. */ | |
1033 | if (stype != IEEE80211_STYPE_DATA && | |
1034 | stype != IEEE80211_STYPE_DATA_CFACK && | |
1035 | stype != IEEE80211_STYPE_DATA_CFPOLL && | |
1036 | stype != IEEE80211_STYPE_DATA_CFACKPOLL&& | |
1037 | stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 | |
1038 | ) { | |
1039 | if (stype != IEEE80211_STYPE_NULLFUNC) | |
1040 | IEEE80211_DEBUG_DROP( | |
1041 | "RX: dropped data frame " | |
1042 | "with no data (type=0x%02x, " | |
1043 | "subtype=0x%02x, len=%d)\n", | |
1044 | type, stype, skb->len); | |
1045 | goto rx_dropped; | |
1046 | } | |
1047 | if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) | |
1048 | goto rx_dropped; | |
1049 | ||
1050 | /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ | |
1051 | ||
1052 | if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1053 | (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) | |
1054 | { | |
1055 | printk("decrypt frame error\n"); | |
1056 | goto rx_dropped; | |
1057 | } | |
1058 | ||
1059 | ||
1060 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
1061 | ||
1062 | /* skb: hdr + (possibly fragmented) plaintext payload */ | |
1063 | // PR: FIXME: hostap has additional conditions in the "if" below: | |
1064 | // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1065 | if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { | |
1066 | int flen; | |
1067 | struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); | |
1068 | IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); | |
1069 | ||
1070 | if (!frag_skb) { | |
1071 | IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, | |
1072 | "Rx cannot get skb from fragment " | |
1073 | "cache (morefrag=%d seq=%u frag=%u)\n", | |
1074 | (fc & IEEE80211_FCTL_MOREFRAGS) != 0, | |
1075 | WLAN_GET_SEQ_SEQ(sc), frag); | |
1076 | goto rx_dropped; | |
1077 | } | |
1078 | flen = skb->len; | |
1079 | if (frag != 0) | |
1080 | flen -= hdrlen; | |
1081 | ||
1082 | if (frag_skb->tail + flen > frag_skb->end) { | |
1083 | printk(KERN_WARNING "%s: host decrypted and " | |
1084 | "reassembled frame did not fit skb\n", | |
1085 | dev->name); | |
1086 | ieee80211_frag_cache_invalidate(ieee, hdr); | |
1087 | goto rx_dropped; | |
1088 | } | |
1089 | ||
1090 | if (frag == 0) { | |
1091 | /* copy first fragment (including full headers) into | |
1092 | * beginning of the fragment cache skb */ | |
1093 | memcpy(skb_put(frag_skb, flen), skb->data, flen); | |
1094 | } else { | |
1095 | /* append frame payload to the end of the fragment | |
1096 | * cache skb */ | |
1097 | memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, | |
1098 | flen); | |
1099 | } | |
1100 | dev_kfree_skb_any(skb); | |
1101 | skb = NULL; | |
1102 | ||
1103 | if (fc & IEEE80211_FCTL_MOREFRAGS) { | |
1104 | /* more fragments expected - leave the skb in fragment | |
1105 | * cache for now; it will be delivered to upper layers | |
1106 | * after all fragments have been received */ | |
1107 | goto rx_exit; | |
1108 | } | |
1109 | ||
1110 | /* this was the last fragment and the frame will be | |
1111 | * delivered, so remove skb from fragment cache */ | |
1112 | skb = frag_skb; | |
1113 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
1114 | ieee80211_frag_cache_invalidate(ieee, hdr); | |
1115 | } | |
1116 | ||
1117 | /* skb: hdr + (possible reassembled) full MSDU payload; possibly still | |
1118 | * encrypted/authenticated */ | |
1119 | if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1120 | ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) | |
1121 | { | |
1122 | printk("==>decrypt msdu error\n"); | |
1123 | goto rx_dropped; | |
1124 | } | |
1125 | ||
1126 | //added by amy for AP roaming | |
1127 | ieee->LinkDetectInfo.NumRecvDataInPeriod++; | |
1128 | ieee->LinkDetectInfo.NumRxOkInPeriod++; | |
1129 | ||
1130 | hdr = (struct ieee80211_hdr_4addr *) skb->data; | |
1131 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { | |
1132 | if (/*ieee->ieee802_1x &&*/ | |
1133 | ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1134 | ||
1135 | #ifdef CONFIG_IEEE80211_DEBUG | |
1136 | /* pass unencrypted EAPOL frames even if encryption is | |
1137 | * configured */ | |
1138 | struct eapol *eap = (struct eapol *)(skb->data + | |
1139 | 24); | |
1140 | IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", | |
1141 | eap_get_type(eap->type)); | |
1142 | #endif | |
1143 | } else { | |
1144 | IEEE80211_DEBUG_DROP( | |
1145 | "encryption configured, but RX " | |
1146 | "frame not encrypted (SA=" MAC_FMT ")\n", | |
1147 | MAC_ARG(hdr->addr2)); | |
1148 | goto rx_dropped; | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | #ifdef CONFIG_IEEE80211_DEBUG | |
1153 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && | |
1154 | ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1155 | struct eapol *eap = (struct eapol *)(skb->data + | |
1156 | 24); | |
1157 | IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", | |
1158 | eap_get_type(eap->type)); | |
1159 | } | |
1160 | #endif | |
1161 | ||
1162 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && | |
1163 | !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1164 | IEEE80211_DEBUG_DROP( | |
1165 | "dropped unencrypted RX data " | |
1166 | "frame from " MAC_FMT | |
1167 | " (drop_unencrypted=1)\n", | |
1168 | MAC_ARG(hdr->addr2)); | |
1169 | goto rx_dropped; | |
1170 | } | |
1171 | /* | |
1172 | if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1173 | printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); | |
1174 | } | |
1175 | */ | |
1176 | //added by amy for reorder | |
1177 | #if 1 | |
1178 | if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) | |
1179 | && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)) | |
1180 | { | |
1181 | TID = Frame_QoSTID(skb->data); | |
1182 | SeqNum = WLAN_GET_SEQ_SEQ(sc); | |
1183 | GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true); | |
1184 | if(TID !=0 && TID !=3) | |
1185 | { | |
1186 | ieee->bis_any_nonbepkts = true; | |
1187 | } | |
1188 | } | |
1189 | #endif | |
1190 | //added by amy for reorder | |
1191 | /* skb: hdr + (possible reassembled) full plaintext payload */ | |
1192 | payload = skb->data + hdrlen; | |
1193 | //ethertype = (payload[6] << 8) | payload[7]; | |
1194 | rxb = (struct ieee80211_rxb*)kmalloc(sizeof(struct ieee80211_rxb),GFP_ATOMIC); | |
1195 | if(rxb == NULL) | |
1196 | { | |
1197 | IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__); | |
1198 | goto rx_dropped; | |
1199 | } | |
1200 | /* to parse amsdu packets */ | |
1201 | /* qos data packets & reserved bit is 1 */ | |
1202 | if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) { | |
1203 | /* only to free rxb, and not submit the packets to upper layer */ | |
1204 | for(i =0; i < rxb->nr_subframes; i++) { | |
1205 | dev_kfree_skb(rxb->subframes[i]); | |
1206 | } | |
1207 | kfree(rxb); | |
1208 | rxb = NULL; | |
1209 | goto rx_dropped; | |
1210 | } | |
1211 | ||
1212 | ieee->last_rx_ps_time = jiffies; | |
1213 | //added by amy for reorder | |
1214 | if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){ | |
1215 | //added by amy for reorder | |
1216 | for(i = 0; i<rxb->nr_subframes; i++) { | |
1217 | struct sk_buff *sub_skb = rxb->subframes[i]; | |
1218 | ||
1219 | if (sub_skb) { | |
1220 | /* convert hdr + possible LLC headers into Ethernet header */ | |
1221 | ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; | |
1222 | if (sub_skb->len >= 8 && | |
1223 | ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && | |
1224 | ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || | |
1225 | memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { | |
1226 | /* remove RFC1042 or Bridge-Tunnel encapsulation and | |
1227 | * replace EtherType */ | |
1228 | skb_pull(sub_skb, SNAP_SIZE); | |
1229 | memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); | |
1230 | memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); | |
1231 | } else { | |
1232 | u16 len; | |
1233 | /* Leave Ethernet header part of hdr and full payload */ | |
1234 | len = htons(sub_skb->len); | |
1235 | memcpy(skb_push(sub_skb, 2), &len, 2); | |
1236 | memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); | |
1237 | memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); | |
1238 | } | |
1239 | ||
1240 | stats->rx_packets++; | |
1241 | stats->rx_bytes += sub_skb->len; | |
1242 | if(is_multicast_ether_addr(dst)) { | |
1243 | stats->multicast++; | |
1244 | } | |
1245 | ||
1246 | /* Indicat the packets to upper layer */ | |
1247 | //printk("0skb_len(%d)\n", skb->len); | |
1248 | sub_skb->protocol = eth_type_trans(sub_skb, dev); | |
1249 | memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); | |
1250 | sub_skb->dev = dev; | |
1251 | sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ | |
1252 | //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ | |
1253 | //printk("1skb_len(%d)\n", skb->len); | |
1254 | netif_rx(sub_skb); | |
1255 | } | |
1256 | } | |
1257 | kfree(rxb); | |
1258 | rxb = NULL; | |
1259 | ||
1260 | } | |
1261 | else | |
1262 | { | |
1263 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__); | |
1264 | RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); | |
1265 | } | |
1266 | #ifndef JOHN_NOCPY | |
1267 | dev_kfree_skb(skb); | |
1268 | #endif | |
1269 | ||
1270 | rx_exit: | |
5f53d8ca JC |
1271 | return 1; |
1272 | ||
1273 | rx_dropped: | |
1274 | if (rxb != NULL) | |
1275 | { | |
1276 | kfree(rxb); | |
1277 | rxb = NULL; | |
1278 | } | |
1279 | stats->rx_dropped++; | |
1280 | ||
1281 | /* Returning 0 indicates to caller that we have not handled the SKB-- | |
1282 | * so it is still allocated and can be used again by underlying | |
1283 | * hardware as a DMA target */ | |
1284 | return 0; | |
1285 | } | |
1286 | ||
1287 | #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 | |
1288 | ||
1289 | static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; | |
1290 | ||
1291 | /* | |
1292 | * Make ther structure we read from the beacon packet has | |
1293 | * the right values | |
1294 | */ | |
1295 | static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element | |
1296 | *info_element, int sub_type) | |
1297 | { | |
1298 | ||
1299 | if (info_element->qui_subtype != sub_type) | |
1300 | return -1; | |
1301 | if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) | |
1302 | return -1; | |
1303 | if (info_element->qui_type != QOS_OUI_TYPE) | |
1304 | return -1; | |
1305 | if (info_element->version != QOS_VERSION_1) | |
1306 | return -1; | |
1307 | ||
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | ||
1312 | /* | |
1313 | * Parse a QoS parameter element | |
1314 | */ | |
1315 | static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info | |
1316 | *element_param, struct ieee80211_info_element | |
1317 | *info_element) | |
1318 | { | |
1319 | int ret = 0; | |
1320 | u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; | |
1321 | ||
1322 | if ((info_element == NULL) || (element_param == NULL)) | |
1323 | return -1; | |
1324 | ||
1325 | if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { | |
1326 | memcpy(element_param->info_element.qui, info_element->data, | |
1327 | info_element->len); | |
1328 | element_param->info_element.elementID = info_element->id; | |
1329 | element_param->info_element.length = info_element->len; | |
1330 | } else | |
1331 | ret = -1; | |
1332 | if (ret == 0) | |
1333 | ret = ieee80211_verify_qos_info(&element_param->info_element, | |
1334 | QOS_OUI_PARAM_SUB_TYPE); | |
1335 | return ret; | |
1336 | } | |
1337 | ||
1338 | /* | |
1339 | * Parse a QoS information element | |
1340 | */ | |
1341 | static int ieee80211_read_qos_info_element(struct | |
1342 | ieee80211_qos_information_element | |
1343 | *element_info, struct ieee80211_info_element | |
1344 | *info_element) | |
1345 | { | |
1346 | int ret = 0; | |
1347 | u16 size = sizeof(struct ieee80211_qos_information_element) - 2; | |
1348 | ||
1349 | if (element_info == NULL) | |
1350 | return -1; | |
1351 | if (info_element == NULL) | |
1352 | return -1; | |
1353 | ||
1354 | if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { | |
1355 | memcpy(element_info->qui, info_element->data, | |
1356 | info_element->len); | |
1357 | element_info->elementID = info_element->id; | |
1358 | element_info->length = info_element->len; | |
1359 | } else | |
1360 | ret = -1; | |
1361 | ||
1362 | if (ret == 0) | |
1363 | ret = ieee80211_verify_qos_info(element_info, | |
1364 | QOS_OUI_INFO_SUB_TYPE); | |
1365 | return ret; | |
1366 | } | |
1367 | ||
1368 | ||
1369 | /* | |
1370 | * Write QoS parameters from the ac parameters. | |
1371 | */ | |
1372 | static int ieee80211_qos_convert_ac_to_parameters(struct | |
1373 | ieee80211_qos_parameter_info | |
1374 | *param_elm, struct | |
1375 | ieee80211_qos_parameters | |
1376 | *qos_param) | |
1377 | { | |
1378 | int rc = 0; | |
1379 | int i; | |
1380 | struct ieee80211_qos_ac_parameter *ac_params; | |
1381 | u8 aci; | |
1382 | //u8 cw_min; | |
1383 | //u8 cw_max; | |
1384 | ||
1385 | for (i = 0; i < QOS_QUEUE_NUM; i++) { | |
1386 | ac_params = &(param_elm->ac_params_record[i]); | |
1387 | ||
1388 | aci = (ac_params->aci_aifsn & 0x60) >> 5; | |
1389 | ||
1390 | if(aci >= QOS_QUEUE_NUM) | |
1391 | continue; | |
1392 | qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; | |
1393 | ||
1394 | /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ | |
1395 | qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; | |
1396 | ||
1397 | qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; | |
1398 | ||
1399 | qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; | |
1400 | ||
1401 | qos_param->flag[aci] = | |
1402 | (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; | |
1403 | qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); | |
1404 | } | |
1405 | return rc; | |
1406 | } | |
1407 | ||
1408 | /* | |
1409 | * we have a generic data element which it may contain QoS information or | |
1410 | * parameters element. check the information element length to decide | |
1411 | * which type to read | |
1412 | */ | |
1413 | static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element | |
1414 | *info_element, | |
1415 | struct ieee80211_network *network) | |
1416 | { | |
1417 | int rc = 0; | |
1418 | struct ieee80211_qos_parameters *qos_param = NULL; | |
1419 | struct ieee80211_qos_information_element qos_info_element; | |
1420 | ||
1421 | rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); | |
1422 | ||
1423 | if (rc == 0) { | |
1424 | network->qos_data.param_count = qos_info_element.ac_info & 0x0F; | |
1425 | network->flags |= NETWORK_HAS_QOS_INFORMATION; | |
1426 | } else { | |
1427 | struct ieee80211_qos_parameter_info param_element; | |
1428 | ||
1429 | rc = ieee80211_read_qos_param_element(¶m_element, | |
1430 | info_element); | |
1431 | if (rc == 0) { | |
1432 | qos_param = &(network->qos_data.parameters); | |
1433 | ieee80211_qos_convert_ac_to_parameters(¶m_element, | |
1434 | qos_param); | |
1435 | network->flags |= NETWORK_HAS_QOS_PARAMETERS; | |
1436 | network->qos_data.param_count = | |
1437 | param_element.info_element.ac_info & 0x0F; | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | if (rc == 0) { | |
1442 | IEEE80211_DEBUG_QOS("QoS is supported\n"); | |
1443 | network->qos_data.supported = 1; | |
1444 | } | |
1445 | return rc; | |
1446 | } | |
1447 | ||
1448 | #ifdef CONFIG_IEEE80211_DEBUG | |
1449 | #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x | |
1450 | ||
1451 | static const char *get_info_element_string(u16 id) | |
1452 | { | |
1453 | switch (id) { | |
1454 | MFIE_STRING(SSID); | |
1455 | MFIE_STRING(RATES); | |
1456 | MFIE_STRING(FH_SET); | |
1457 | MFIE_STRING(DS_SET); | |
1458 | MFIE_STRING(CF_SET); | |
1459 | MFIE_STRING(TIM); | |
1460 | MFIE_STRING(IBSS_SET); | |
1461 | MFIE_STRING(COUNTRY); | |
1462 | MFIE_STRING(HOP_PARAMS); | |
1463 | MFIE_STRING(HOP_TABLE); | |
1464 | MFIE_STRING(REQUEST); | |
1465 | MFIE_STRING(CHALLENGE); | |
1466 | MFIE_STRING(POWER_CONSTRAINT); | |
1467 | MFIE_STRING(POWER_CAPABILITY); | |
1468 | MFIE_STRING(TPC_REQUEST); | |
1469 | MFIE_STRING(TPC_REPORT); | |
1470 | MFIE_STRING(SUPP_CHANNELS); | |
1471 | MFIE_STRING(CSA); | |
1472 | MFIE_STRING(MEASURE_REQUEST); | |
1473 | MFIE_STRING(MEASURE_REPORT); | |
1474 | MFIE_STRING(QUIET); | |
1475 | MFIE_STRING(IBSS_DFS); | |
1476 | // MFIE_STRING(ERP_INFO); | |
1477 | MFIE_STRING(RSN); | |
1478 | MFIE_STRING(RATES_EX); | |
1479 | MFIE_STRING(GENERIC); | |
1480 | MFIE_STRING(QOS_PARAMETER); | |
1481 | default: | |
1482 | return "UNKNOWN"; | |
1483 | } | |
1484 | } | |
1485 | #endif | |
1486 | ||
5f53d8ca JC |
1487 | static inline void ieee80211_extract_country_ie( |
1488 | struct ieee80211_device *ieee, | |
1489 | struct ieee80211_info_element *info_element, | |
1490 | struct ieee80211_network *network, | |
1491 | u8 * addr2 | |
1492 | ) | |
1493 | { | |
1494 | if(IS_DOT11D_ENABLE(ieee)) | |
1495 | { | |
1496 | if(info_element->len!= 0) | |
1497 | { | |
1498 | memcpy(network->CountryIeBuf, info_element->data, info_element->len); | |
1499 | network->CountryIeLen = info_element->len; | |
1500 | ||
1501 | if(!IS_COUNTRY_IE_VALID(ieee)) | |
1502 | { | |
1503 | Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | // | |
1508 | // 070305, rcnjko: I update country IE watch dog here because | |
1509 | // some AP (e.g. Cisco 1242) don't include country IE in their | |
1510 | // probe response frame. | |
1511 | // | |
1512 | if(IS_EQUAL_CIE_SRC(ieee, addr2) ) | |
1513 | { | |
1514 | UPDATE_CIE_WATCHDOG(ieee); | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | } | |
5f53d8ca JC |
1519 | |
1520 | int ieee80211_parse_info_param(struct ieee80211_device *ieee, | |
1521 | struct ieee80211_info_element *info_element, | |
1522 | u16 length, | |
1523 | struct ieee80211_network *network, | |
1524 | struct ieee80211_rx_stats *stats) | |
1525 | { | |
1526 | u8 i; | |
1527 | short offset; | |
1528 | u16 tmp_htcap_len=0; | |
1529 | u16 tmp_htinfo_len=0; | |
1530 | u16 ht_realtek_agg_len=0; | |
1531 | u8 ht_realtek_agg_buf[MAX_IE_LEN]; | |
1532 | // u16 broadcom_len = 0; | |
1533 | #ifdef CONFIG_IEEE80211_DEBUG | |
1534 | char rates_str[64]; | |
1535 | char *p; | |
1536 | #endif | |
1537 | ||
1538 | while (length >= sizeof(*info_element)) { | |
1539 | if (sizeof(*info_element) + info_element->len > length) { | |
1540 | IEEE80211_DEBUG_MGMT("Info elem: parse failed: " | |
1541 | "info_element->len + 2 > left : " | |
1542 | "info_element->len+2=%zd left=%d, id=%d.\n", | |
1543 | info_element->len + | |
1544 | sizeof(*info_element), | |
1545 | length, info_element->id); | |
1546 | /* We stop processing but don't return an error here | |
1547 | * because some misbehaviour APs break this rule. ie. | |
1548 | * Orinoco AP1000. */ | |
1549 | break; | |
1550 | } | |
1551 | ||
1552 | switch (info_element->id) { | |
1553 | case MFIE_TYPE_SSID: | |
1554 | if (ieee80211_is_empty_essid(info_element->data, | |
1555 | info_element->len)) { | |
1556 | network->flags |= NETWORK_EMPTY_ESSID; | |
1557 | break; | |
1558 | } | |
1559 | ||
1560 | network->ssid_len = min(info_element->len, | |
1561 | (u8) IW_ESSID_MAX_SIZE); | |
1562 | memcpy(network->ssid, info_element->data, network->ssid_len); | |
1563 | if (network->ssid_len < IW_ESSID_MAX_SIZE) | |
1564 | memset(network->ssid + network->ssid_len, 0, | |
1565 | IW_ESSID_MAX_SIZE - network->ssid_len); | |
1566 | ||
1567 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", | |
1568 | network->ssid, network->ssid_len); | |
1569 | break; | |
1570 | ||
1571 | case MFIE_TYPE_RATES: | |
1572 | #ifdef CONFIG_IEEE80211_DEBUG | |
1573 | p = rates_str; | |
1574 | #endif | |
1575 | network->rates_len = min(info_element->len, | |
1576 | MAX_RATES_LENGTH); | |
1577 | for (i = 0; i < network->rates_len; i++) { | |
1578 | network->rates[i] = info_element->data[i]; | |
1579 | #ifdef CONFIG_IEEE80211_DEBUG | |
1580 | p += snprintf(p, sizeof(rates_str) - | |
1581 | (p - rates_str), "%02X ", | |
1582 | network->rates[i]); | |
1583 | #endif | |
1584 | if (ieee80211_is_ofdm_rate | |
1585 | (info_element->data[i])) { | |
1586 | network->flags |= NETWORK_HAS_OFDM; | |
1587 | if (info_element->data[i] & | |
1588 | IEEE80211_BASIC_RATE_MASK) | |
1589 | network->flags &= | |
1590 | ~NETWORK_HAS_CCK; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", | |
1595 | rates_str, network->rates_len); | |
1596 | break; | |
1597 | ||
1598 | case MFIE_TYPE_RATES_EX: | |
1599 | #ifdef CONFIG_IEEE80211_DEBUG | |
1600 | p = rates_str; | |
1601 | #endif | |
1602 | network->rates_ex_len = min(info_element->len, | |
1603 | MAX_RATES_EX_LENGTH); | |
1604 | for (i = 0; i < network->rates_ex_len; i++) { | |
1605 | network->rates_ex[i] = info_element->data[i]; | |
1606 | #ifdef CONFIG_IEEE80211_DEBUG | |
1607 | p += snprintf(p, sizeof(rates_str) - | |
1608 | (p - rates_str), "%02X ", | |
1609 | network->rates[i]); | |
1610 | #endif | |
1611 | if (ieee80211_is_ofdm_rate | |
1612 | (info_element->data[i])) { | |
1613 | network->flags |= NETWORK_HAS_OFDM; | |
1614 | if (info_element->data[i] & | |
1615 | IEEE80211_BASIC_RATE_MASK) | |
1616 | network->flags &= | |
1617 | ~NETWORK_HAS_CCK; | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", | |
1622 | rates_str, network->rates_ex_len); | |
1623 | break; | |
1624 | ||
1625 | case MFIE_TYPE_DS_SET: | |
1626 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", | |
1627 | info_element->data[0]); | |
1628 | network->channel = info_element->data[0]; | |
1629 | break; | |
1630 | ||
1631 | case MFIE_TYPE_FH_SET: | |
1632 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); | |
1633 | break; | |
1634 | ||
1635 | case MFIE_TYPE_CF_SET: | |
1636 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); | |
1637 | break; | |
1638 | ||
1639 | case MFIE_TYPE_TIM: | |
1640 | if(info_element->len < 4) | |
1641 | break; | |
1642 | ||
1643 | network->tim.tim_count = info_element->data[0]; | |
1644 | network->tim.tim_period = info_element->data[1]; | |
1645 | ||
1646 | network->dtim_period = info_element->data[1]; | |
1647 | if(ieee->state != IEEE80211_LINKED) | |
1648 | break; | |
5f53d8ca JC |
1649 | //we use jiffies for legacy Power save |
1650 | network->last_dtim_sta_time[0] = jiffies; | |
5f53d8ca JC |
1651 | network->last_dtim_sta_time[1] = stats->mac_time[1]; |
1652 | ||
1653 | network->dtim_data = IEEE80211_DTIM_VALID; | |
1654 | ||
1655 | if(info_element->data[0] != 0) | |
1656 | break; | |
1657 | ||
1658 | if(info_element->data[2] & 1) | |
1659 | network->dtim_data |= IEEE80211_DTIM_MBCAST; | |
1660 | ||
1661 | offset = (info_element->data[2] >> 1)*2; | |
1662 | ||
1663 | //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id); | |
1664 | ||
1665 | if(ieee->assoc_id < 8*offset || | |
1666 | ieee->assoc_id > 8*(offset + info_element->len -3)) | |
1667 | ||
1668 | break; | |
1669 | ||
1670 | offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; | |
1671 | ||
1672 | if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) | |
1673 | network->dtim_data |= IEEE80211_DTIM_UCAST; | |
1674 | ||
1675 | //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); | |
1676 | break; | |
1677 | ||
1678 | case MFIE_TYPE_ERP: | |
1679 | network->erp_value = info_element->data[0]; | |
1680 | network->flags |= NETWORK_HAS_ERP_VALUE; | |
1681 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", | |
1682 | network->erp_value); | |
1683 | break; | |
1684 | case MFIE_TYPE_IBSS_SET: | |
1685 | network->atim_window = info_element->data[0]; | |
1686 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", | |
1687 | network->atim_window); | |
1688 | break; | |
1689 | ||
1690 | case MFIE_TYPE_CHALLENGE: | |
1691 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); | |
1692 | break; | |
1693 | ||
1694 | case MFIE_TYPE_GENERIC: | |
1695 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", | |
1696 | info_element->len); | |
1697 | if (!ieee80211_parse_qos_info_param_IE(info_element, | |
1698 | network)) | |
1699 | break; | |
1700 | ||
1701 | if (info_element->len >= 4 && | |
1702 | info_element->data[0] == 0x00 && | |
1703 | info_element->data[1] == 0x50 && | |
1704 | info_element->data[2] == 0xf2 && | |
1705 | info_element->data[3] == 0x01) { | |
1706 | network->wpa_ie_len = min(info_element->len + 2, | |
1707 | MAX_WPA_IE_LEN); | |
1708 | memcpy(network->wpa_ie, info_element, | |
1709 | network->wpa_ie_len); | |
1710 | break; | |
1711 | } | |
1712 | ||
5f53d8ca JC |
1713 | if (info_element->len == 7 && |
1714 | info_element->data[0] == 0x00 && | |
1715 | info_element->data[1] == 0xe0 && | |
1716 | info_element->data[2] == 0x4c && | |
1717 | info_element->data[3] == 0x01 && | |
1718 | info_element->data[4] == 0x02) { | |
1719 | network->Turbo_Enable = 1; | |
1720 | } | |
5f53d8ca JC |
1721 | |
1722 | //for HTcap and HTinfo parameters | |
1723 | if(tmp_htcap_len == 0){ | |
1724 | if(info_element->len >= 4 && | |
1725 | info_element->data[0] == 0x00 && | |
1726 | info_element->data[1] == 0x90 && | |
1727 | info_element->data[2] == 0x4c && | |
1728 | info_element->data[3] == 0x033){ | |
1729 | ||
1730 | tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1731 | if(tmp_htcap_len != 0){ | |
1732 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
1733 | network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ | |
1734 | sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; | |
1735 | memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); | |
1736 | } | |
1737 | } | |
1738 | if(tmp_htcap_len != 0){ | |
1739 | network->bssht.bdSupportHT = true; | |
1740 | network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0); | |
1741 | }else{ | |
1742 | network->bssht.bdSupportHT = false; | |
1743 | network->bssht.bdHT1R = false; | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | ||
1748 | if(tmp_htinfo_len == 0){ | |
1749 | if(info_element->len >= 4 && | |
1750 | info_element->data[0] == 0x00 && | |
1751 | info_element->data[1] == 0x90 && | |
1752 | info_element->data[2] == 0x4c && | |
1753 | info_element->data[3] == 0x034){ | |
1754 | ||
1755 | tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1756 | if(tmp_htinfo_len != 0){ | |
1757 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
1758 | if(tmp_htinfo_len){ | |
1759 | network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ | |
1760 | sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; | |
1761 | memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); | |
1762 | } | |
1763 | ||
1764 | } | |
1765 | ||
1766 | } | |
1767 | } | |
1768 | ||
1769 | if(ieee->aggregation){ | |
1770 | if(network->bssht.bdSupportHT){ | |
1771 | if(info_element->len >= 4 && | |
1772 | info_element->data[0] == 0x00 && | |
1773 | info_element->data[1] == 0xe0 && | |
1774 | info_element->data[2] == 0x4c && | |
1775 | info_element->data[3] == 0x02){ | |
1776 | ||
1777 | ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1778 | memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); | |
1779 | ||
1780 | } | |
1781 | if(ht_realtek_agg_len >= 5){ | |
1782 | network->realtek_cap_exit = true; | |
1783 | network->bssht.bdRT2RTAggregation = true; | |
1784 | ||
1785 | if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) | |
1786 | network->bssht.bdRT2RTLongSlotTime = true; | |
1787 | ||
1788 | if((ht_realtek_agg_buf[4]==1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE)) | |
1789 | { | |
1790 | network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE; | |
1791 | //bssDesc->Vender = HT_IOT_PEER_REALTEK_92SE; | |
1792 | } | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | } | |
1797 | ||
1798 | //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) | |
1799 | { | |
1800 | if((info_element->len >= 3 && | |
1801 | info_element->data[0] == 0x00 && | |
1802 | info_element->data[1] == 0x05 && | |
1803 | info_element->data[2] == 0xb5) || | |
1804 | (info_element->len >= 3 && | |
1805 | info_element->data[0] == 0x00 && | |
1806 | info_element->data[1] == 0x0a && | |
1807 | info_element->data[2] == 0xf7) || | |
1808 | (info_element->len >= 3 && | |
1809 | info_element->data[0] == 0x00 && | |
1810 | info_element->data[1] == 0x10 && | |
1811 | info_element->data[2] == 0x18)){ | |
1812 | ||
1813 | network->broadcom_cap_exist = true; | |
1814 | ||
1815 | } | |
1816 | } | |
5f53d8ca JC |
1817 | if(info_element->len >= 3 && |
1818 | info_element->data[0] == 0x00 && | |
1819 | info_element->data[1] == 0x0c && | |
1820 | info_element->data[2] == 0x43) | |
1821 | { | |
1822 | network->ralink_cap_exist = true; | |
1823 | } | |
1824 | else | |
1825 | network->ralink_cap_exist = false; | |
1826 | //added by amy for atheros AP | |
1827 | if((info_element->len >= 3 && | |
1828 | info_element->data[0] == 0x00 && | |
1829 | info_element->data[1] == 0x03 && | |
1830 | info_element->data[2] == 0x7f) || | |
1831 | (info_element->len >= 3 && | |
1832 | info_element->data[0] == 0x00 && | |
1833 | info_element->data[1] == 0x13 && | |
1834 | info_element->data[2] == 0x74)) | |
1835 | { | |
1836 | // printk("========>%s(): athros AP is exist\n",__FUNCTION__); | |
1837 | network->atheros_cap_exist = true; | |
1838 | } | |
1839 | else | |
1840 | network->atheros_cap_exist = false; | |
1841 | ||
1842 | if ((info_element->len >= 3 && | |
1843 | info_element->data[0] == 0x00 && | |
1844 | info_element->data[1] == 0x50 && | |
1845 | info_element->data[2] == 0x43) ) | |
1846 | { | |
1847 | network->marvell_cap_exist = true; | |
1848 | } | |
1849 | else | |
1850 | network->marvell_cap_exist = false; | |
1851 | ||
1852 | if(info_element->len >= 3 && | |
1853 | info_element->data[0] == 0x00 && | |
1854 | info_element->data[1] == 0x40 && | |
1855 | info_element->data[2] == 0x96) | |
1856 | { | |
1857 | network->cisco_cap_exist = true; | |
1858 | } | |
1859 | else | |
1860 | network->cisco_cap_exist = false; | |
1861 | //added by amy for LEAP of cisco | |
1862 | if(info_element->len > 4 && | |
1863 | info_element->data[0] == 0x00 && | |
1864 | info_element->data[1] == 0x40 && | |
1865 | info_element->data[2] == 0x96 && | |
1866 | info_element->data[3] == 0x01) | |
1867 | { | |
1868 | if(info_element->len == 6) | |
1869 | { | |
1870 | memcpy(network->CcxRmState, &info_element[4], 2); | |
1871 | if(network->CcxRmState[0] != 0) | |
1872 | { | |
1873 | network->bCcxRmEnable = true; | |
1874 | } | |
1875 | else | |
1876 | network->bCcxRmEnable = false; | |
1877 | // | |
1878 | // CCXv4 Table 59-1 MBSSID Masks. | |
1879 | // | |
1880 | network->MBssidMask = network->CcxRmState[1] & 0x07; | |
1881 | if(network->MBssidMask != 0) | |
1882 | { | |
1883 | network->bMBssidValid = true; | |
1884 | network->MBssidMask = 0xff << (network->MBssidMask); | |
1885 | cpMacAddr(network->MBssid, network->bssid); | |
1886 | network->MBssid[5] &= network->MBssidMask; | |
1887 | } | |
1888 | else | |
1889 | { | |
1890 | network->bMBssidValid = false; | |
1891 | } | |
1892 | } | |
1893 | else | |
1894 | { | |
1895 | network->bCcxRmEnable = false; | |
1896 | } | |
1897 | } | |
1898 | if(info_element->len > 4 && | |
1899 | info_element->data[0] == 0x00 && | |
1900 | info_element->data[1] == 0x40 && | |
1901 | info_element->data[2] == 0x96 && | |
1902 | info_element->data[3] == 0x03) | |
1903 | { | |
1904 | if(info_element->len == 5) | |
1905 | { | |
1906 | network->bWithCcxVerNum = true; | |
1907 | network->BssCcxVerNumber = info_element->data[4]; | |
1908 | } | |
1909 | else | |
1910 | { | |
1911 | network->bWithCcxVerNum = false; | |
1912 | network->BssCcxVerNumber = 0; | |
1913 | } | |
1914 | } | |
1915 | break; | |
1916 | ||
1917 | case MFIE_TYPE_RSN: | |
1918 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", | |
1919 | info_element->len); | |
1920 | network->rsn_ie_len = min(info_element->len + 2, | |
1921 | MAX_WPA_IE_LEN); | |
1922 | memcpy(network->rsn_ie, info_element, | |
1923 | network->rsn_ie_len); | |
1924 | break; | |
1925 | ||
1926 | //HT related element. | |
1927 | case MFIE_TYPE_HT_CAP: | |
1928 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", | |
1929 | info_element->len); | |
1930 | tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1931 | if(tmp_htcap_len != 0){ | |
1932 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
1933 | network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ | |
1934 | sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; | |
1935 | memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); | |
1936 | ||
1937 | //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() | |
1938 | // windows driver will update WMM parameters each beacon received once connected | |
1939 | // Linux driver is a bit different. | |
1940 | network->bssht.bdSupportHT = true; | |
1941 | network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0); | |
1942 | } | |
1943 | else{ | |
1944 | network->bssht.bdSupportHT = false; | |
1945 | network->bssht.bdHT1R = false; | |
1946 | } | |
1947 | break; | |
1948 | ||
1949 | ||
1950 | case MFIE_TYPE_HT_INFO: | |
1951 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", | |
1952 | info_element->len); | |
1953 | tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1954 | if(tmp_htinfo_len){ | |
1955 | network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; | |
1956 | network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ | |
1957 | sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; | |
1958 | memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); | |
1959 | } | |
1960 | break; | |
1961 | ||
1962 | case MFIE_TYPE_AIRONET: | |
1963 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", | |
1964 | info_element->len); | |
1965 | if(info_element->len >IE_CISCO_FLAG_POSITION) | |
1966 | { | |
1967 | network->bWithAironetIE = true; | |
1968 | ||
1969 | // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): | |
1970 | // "A Cisco access point advertises support for CKIP in beacon and probe response packets, | |
1971 | // by adding an Aironet element and setting one or both of the CKIP negotiation bits." | |
1972 | if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || | |
1973 | (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) | |
1974 | { | |
1975 | network->bCkipSupported = true; | |
1976 | } | |
1977 | else | |
1978 | { | |
1979 | network->bCkipSupported = false; | |
1980 | } | |
1981 | } | |
1982 | else | |
1983 | { | |
1984 | network->bWithAironetIE = false; | |
1985 | network->bCkipSupported = false; | |
1986 | } | |
1987 | break; | |
1988 | case MFIE_TYPE_QOS_PARAMETER: | |
1989 | printk(KERN_ERR | |
1990 | "QoS Error need to parse QOS_PARAMETER IE\n"); | |
1991 | break; | |
1992 | ||
5f53d8ca JC |
1993 | case MFIE_TYPE_COUNTRY: |
1994 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", | |
1995 | info_element->len); | |
1996 | //printk("=====>Receive <%s> Country IE\n",network->ssid); | |
1997 | ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP | |
1998 | break; | |
5f53d8ca JC |
1999 | default: |
2000 | IEEE80211_DEBUG_MGMT | |
2001 | ("Unsupported info element: %s (%d)\n", | |
2002 | get_info_element_string(info_element->id), | |
2003 | info_element->id); | |
2004 | break; | |
2005 | } | |
2006 | ||
2007 | length -= sizeof(*info_element) + info_element->len; | |
2008 | info_element = | |
2009 | (struct ieee80211_info_element *)&info_element-> | |
2010 | data[info_element->len]; | |
2011 | } | |
2012 | ||
2013 | if(!network->atheros_cap_exist && !network->broadcom_cap_exist && | |
2014 | !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) | |
2015 | { | |
2016 | network->unknown_cap_exist = true; | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | network->unknown_cap_exist = false; | |
2021 | } | |
2022 | return 0; | |
2023 | } | |
2024 | ||
2025 | static inline u8 ieee80211_SignalStrengthTranslate( | |
2026 | u8 CurrSS | |
2027 | ) | |
2028 | { | |
2029 | u8 RetSS; | |
2030 | ||
2031 | // Step 1. Scale mapping. | |
2032 | if(CurrSS >= 71 && CurrSS <= 100) | |
2033 | { | |
2034 | RetSS = 90 + ((CurrSS - 70) / 3); | |
2035 | } | |
2036 | else if(CurrSS >= 41 && CurrSS <= 70) | |
2037 | { | |
2038 | RetSS = 78 + ((CurrSS - 40) / 3); | |
2039 | } | |
2040 | else if(CurrSS >= 31 && CurrSS <= 40) | |
2041 | { | |
2042 | RetSS = 66 + (CurrSS - 30); | |
2043 | } | |
2044 | else if(CurrSS >= 21 && CurrSS <= 30) | |
2045 | { | |
2046 | RetSS = 54 + (CurrSS - 20); | |
2047 | } | |
2048 | else if(CurrSS >= 5 && CurrSS <= 20) | |
2049 | { | |
2050 | RetSS = 42 + (((CurrSS - 5) * 2) / 3); | |
2051 | } | |
2052 | else if(CurrSS == 4) | |
2053 | { | |
2054 | RetSS = 36; | |
2055 | } | |
2056 | else if(CurrSS == 3) | |
2057 | { | |
2058 | RetSS = 27; | |
2059 | } | |
2060 | else if(CurrSS == 2) | |
2061 | { | |
2062 | RetSS = 18; | |
2063 | } | |
2064 | else if(CurrSS == 1) | |
2065 | { | |
2066 | RetSS = 9; | |
2067 | } | |
2068 | else | |
2069 | { | |
2070 | RetSS = CurrSS; | |
2071 | } | |
2072 | //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); | |
2073 | ||
2074 | // Step 2. Smoothing. | |
2075 | ||
2076 | //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); | |
2077 | ||
2078 | return RetSS; | |
2079 | } | |
2080 | ||
2081 | long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index. | |
2082 | { | |
2083 | long signal_power; // in dBm. | |
2084 | ||
2085 | // Translate to dBm (x=0.5y-95). | |
2086 | signal_power = (long)((signal_strength_index + 1) >> 1); | |
2087 | signal_power -= 95; | |
2088 | ||
2089 | return signal_power; | |
2090 | } | |
2091 | ||
2092 | static inline int ieee80211_network_init( | |
2093 | struct ieee80211_device *ieee, | |
2094 | struct ieee80211_probe_response *beacon, | |
2095 | struct ieee80211_network *network, | |
2096 | struct ieee80211_rx_stats *stats) | |
2097 | { | |
2098 | #ifdef CONFIG_IEEE80211_DEBUG | |
2099 | //char rates_str[64]; | |
2100 | //char *p; | |
2101 | #endif | |
2102 | ||
2103 | network->qos_data.active = 0; | |
2104 | network->qos_data.supported = 0; | |
2105 | network->qos_data.param_count = 0; | |
2106 | network->qos_data.old_param_count = 0; | |
2107 | ||
2108 | /* Pull out fixed field data */ | |
2109 | memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); | |
2110 | network->capability = le16_to_cpu(beacon->capability); | |
2111 | network->last_scanned = jiffies; | |
2112 | network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); | |
2113 | network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); | |
2114 | network->beacon_interval = le32_to_cpu(beacon->beacon_interval); | |
2115 | /* Where to pull this? beacon->listen_interval;*/ | |
2116 | network->listen_interval = 0x0A; | |
2117 | network->rates_len = network->rates_ex_len = 0; | |
2118 | network->last_associate = 0; | |
2119 | network->ssid_len = 0; | |
2120 | network->flags = 0; | |
2121 | network->atim_window = 0; | |
2122 | network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? | |
2123 | 0x3 : 0x0; | |
2124 | network->berp_info_valid = false; | |
2125 | network->broadcom_cap_exist = false; | |
2126 | network->ralink_cap_exist = false; | |
2127 | network->atheros_cap_exist = false; | |
2128 | network->cisco_cap_exist = false; | |
2129 | network->unknown_cap_exist = false; | |
2130 | network->realtek_cap_exit = false; | |
2131 | network->marvell_cap_exist = false; | |
5f53d8ca | 2132 | network->Turbo_Enable = 0; |
5f53d8ca JC |
2133 | network->CountryIeLen = 0; |
2134 | memset(network->CountryIeBuf, 0, MAX_IE_LEN); | |
5f53d8ca JC |
2135 | //Initialize HT parameters |
2136 | //ieee80211_ht_initialize(&network->bssht); | |
2137 | HTInitializeBssDesc(&network->bssht); | |
2138 | if (stats->freq == IEEE80211_52GHZ_BAND) { | |
2139 | /* for A band (No DS info) */ | |
2140 | network->channel = stats->received_channel; | |
2141 | } else | |
2142 | network->flags |= NETWORK_HAS_CCK; | |
2143 | ||
2144 | network->wpa_ie_len = 0; | |
2145 | network->rsn_ie_len = 0; | |
2146 | ||
2147 | if (ieee80211_parse_info_param | |
2148 | (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) | |
2149 | return 1; | |
2150 | ||
2151 | network->mode = 0; | |
2152 | if (stats->freq == IEEE80211_52GHZ_BAND) | |
2153 | network->mode = IEEE_A; | |
2154 | else { | |
2155 | if (network->flags & NETWORK_HAS_OFDM) | |
2156 | network->mode |= IEEE_G; | |
2157 | if (network->flags & NETWORK_HAS_CCK) | |
2158 | network->mode |= IEEE_B; | |
2159 | } | |
2160 | ||
2161 | if (network->mode == 0) { | |
2162 | IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' " | |
2163 | "network.\n", | |
2164 | escape_essid(network->ssid, | |
2165 | network->ssid_len), | |
2166 | MAC_ARG(network->bssid)); | |
2167 | return 1; | |
2168 | } | |
2169 | ||
2170 | if(network->bssht.bdSupportHT){ | |
2171 | if(network->mode == IEEE_A) | |
2172 | network->mode = IEEE_N_5G; | |
2173 | else if(network->mode & (IEEE_G | IEEE_B)) | |
2174 | network->mode = IEEE_N_24G; | |
2175 | } | |
2176 | if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) | |
2177 | network->flags |= NETWORK_EMPTY_ESSID; | |
2178 | ||
2179 | #if 1 | |
2180 | stats->signal = 30 + (stats->SignalStrength * 70) / 100; | |
2181 | //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); | |
2182 | stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; | |
2183 | #endif | |
2184 | ||
2185 | memcpy(&network->stats, stats, sizeof(network->stats)); | |
2186 | ||
2187 | return 0; | |
2188 | } | |
2189 | ||
2190 | static inline int is_same_network(struct ieee80211_network *src, | |
2191 | struct ieee80211_network *dst, struct ieee80211_device* ieee) | |
2192 | { | |
2193 | /* A network is only a duplicate if the channel, BSSID, ESSID | |
2194 | * and the capability field (in particular IBSS and BSS) all match. | |
2195 | * We treat all <hidden> with the same BSSID and channel | |
2196 | * as one network */ | |
2197 | return //((src->ssid_len == dst->ssid_len) && | |
2198 | (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && | |
2199 | (src->channel == dst->channel) && | |
2200 | !memcmp(src->bssid, dst->bssid, ETH_ALEN) && | |
2201 | //!memcmp(src->ssid, dst->ssid, src->ssid_len) && | |
2202 | (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && | |
2203 | ((src->capability & WLAN_CAPABILITY_IBSS) == | |
2204 | (dst->capability & WLAN_CAPABILITY_IBSS)) && | |
2205 | ((src->capability & WLAN_CAPABILITY_BSS) == | |
2206 | (dst->capability & WLAN_CAPABILITY_BSS))); | |
2207 | } | |
2208 | ||
2209 | static inline void update_network(struct ieee80211_network *dst, | |
2210 | struct ieee80211_network *src) | |
2211 | { | |
2212 | int qos_active; | |
2213 | u8 old_param; | |
2214 | ||
2215 | memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); | |
2216 | dst->capability = src->capability; | |
2217 | memcpy(dst->rates, src->rates, src->rates_len); | |
2218 | dst->rates_len = src->rates_len; | |
2219 | memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); | |
2220 | dst->rates_ex_len = src->rates_ex_len; | |
2221 | if(src->ssid_len > 0) | |
2222 | { | |
2223 | memset(dst->ssid, 0, dst->ssid_len); | |
2224 | dst->ssid_len = src->ssid_len; | |
2225 | memcpy(dst->ssid, src->ssid, src->ssid_len); | |
2226 | } | |
2227 | dst->mode = src->mode; | |
2228 | dst->flags = src->flags; | |
2229 | dst->time_stamp[0] = src->time_stamp[0]; | |
2230 | dst->time_stamp[1] = src->time_stamp[1]; | |
2231 | if (src->flags & NETWORK_HAS_ERP_VALUE) | |
2232 | { | |
2233 | dst->erp_value = src->erp_value; | |
2234 | dst->berp_info_valid = src->berp_info_valid = true; | |
2235 | } | |
2236 | dst->beacon_interval = src->beacon_interval; | |
2237 | dst->listen_interval = src->listen_interval; | |
2238 | dst->atim_window = src->atim_window; | |
2239 | dst->dtim_period = src->dtim_period; | |
2240 | dst->dtim_data = src->dtim_data; | |
2241 | dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; | |
2242 | dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; | |
2243 | memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); | |
2244 | ||
2245 | dst->bssht.bdSupportHT = src->bssht.bdSupportHT; | |
2246 | dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; | |
2247 | dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; | |
2248 | memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); | |
2249 | dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; | |
2250 | memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); | |
2251 | dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; | |
2252 | dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; | |
2253 | dst->broadcom_cap_exist = src->broadcom_cap_exist; | |
2254 | dst->ralink_cap_exist = src->ralink_cap_exist; | |
2255 | dst->atheros_cap_exist = src->atheros_cap_exist; | |
2256 | dst->realtek_cap_exit = src->realtek_cap_exit; | |
2257 | dst->marvell_cap_exist = src->marvell_cap_exist; | |
2258 | dst->cisco_cap_exist = src->cisco_cap_exist; | |
2259 | dst->unknown_cap_exist = src->unknown_cap_exist; | |
2260 | memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); | |
2261 | dst->wpa_ie_len = src->wpa_ie_len; | |
2262 | memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); | |
2263 | dst->rsn_ie_len = src->rsn_ie_len; | |
2264 | ||
2265 | dst->last_scanned = jiffies; | |
2266 | /* qos related parameters */ | |
2267 | //qos_active = src->qos_data.active; | |
2268 | qos_active = dst->qos_data.active; | |
2269 | //old_param = dst->qos_data.old_param_count; | |
2270 | old_param = dst->qos_data.param_count; | |
2271 | if(dst->flags & NETWORK_HAS_QOS_MASK){ | |
2272 | //not update QOS paramter in beacon, as most AP will set all these parameter to 0.//WB | |
2273 | // printk("====>%s(), aifs:%x, %x\n", __FUNCTION__, dst->qos_data.parameters.aifs[0], src->qos_data.parameters.aifs[0]); | |
2274 | // memcpy(&dst->qos_data, &src->qos_data, | |
2275 | // sizeof(struct ieee80211_qos_data)); | |
2276 | } | |
2277 | else { | |
2278 | dst->qos_data.supported = src->qos_data.supported; | |
2279 | dst->qos_data.param_count = src->qos_data.param_count; | |
2280 | } | |
2281 | ||
2282 | if(dst->qos_data.supported == 1) { | |
2283 | dst->QoS_Enable = 1; | |
2284 | if(dst->ssid_len) | |
2285 | IEEE80211_DEBUG_QOS | |
2286 | ("QoS the network %s is QoS supported\n", | |
2287 | dst->ssid); | |
2288 | else | |
2289 | IEEE80211_DEBUG_QOS | |
2290 | ("QoS the network is QoS supported\n"); | |
2291 | } | |
2292 | dst->qos_data.active = qos_active; | |
2293 | dst->qos_data.old_param_count = old_param; | |
2294 | ||
2295 | /* dst->last_associate is not overwritten */ | |
2296 | #if 1 | |
2297 | dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. | |
2298 | if(src->wmm_param[0].ac_aci_acm_aifsn|| \ | |
2299 | src->wmm_param[1].ac_aci_acm_aifsn|| \ | |
2300 | src->wmm_param[2].ac_aci_acm_aifsn|| \ | |
2301 | src->wmm_param[1].ac_aci_acm_aifsn) { | |
2302 | memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); | |
2303 | } | |
2304 | //dst->QoS_Enable = src->QoS_Enable; | |
2305 | #else | |
2306 | dst->QoS_Enable = 1;//for Rtl8187 simulation | |
2307 | #endif | |
5f53d8ca | 2308 | dst->Turbo_Enable = src->Turbo_Enable; |
5f53d8ca | 2309 | |
5f53d8ca JC |
2310 | dst->CountryIeLen = src->CountryIeLen; |
2311 | memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); | |
5f53d8ca JC |
2312 | |
2313 | //added by amy for LEAP | |
2314 | dst->bWithAironetIE = src->bWithAironetIE; | |
2315 | dst->bCkipSupported = src->bCkipSupported; | |
2316 | memcpy(dst->CcxRmState,src->CcxRmState,2); | |
2317 | dst->bCcxRmEnable = src->bCcxRmEnable; | |
2318 | dst->MBssidMask = src->MBssidMask; | |
2319 | dst->bMBssidValid = src->bMBssidValid; | |
2320 | memcpy(dst->MBssid,src->MBssid,6); | |
2321 | dst->bWithCcxVerNum = src->bWithCcxVerNum; | |
2322 | dst->BssCcxVerNumber = src->BssCcxVerNumber; | |
2323 | ||
2324 | } | |
2325 | ||
2326 | static inline int is_beacon(__le16 fc) | |
2327 | { | |
2328 | return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); | |
2329 | } | |
2330 | ||
2331 | static inline void ieee80211_process_probe_response( | |
2332 | struct ieee80211_device *ieee, | |
2333 | struct ieee80211_probe_response *beacon, | |
2334 | struct ieee80211_rx_stats *stats) | |
2335 | { | |
2336 | struct ieee80211_network network; | |
2337 | struct ieee80211_network *target; | |
2338 | struct ieee80211_network *oldest = NULL; | |
2339 | #ifdef CONFIG_IEEE80211_DEBUG | |
2340 | struct ieee80211_info_element *info_element = &beacon->info_element[0]; | |
2341 | #endif | |
2342 | unsigned long flags; | |
2343 | short renew; | |
2344 | //u8 wmm_info; | |
2345 | ||
2346 | memset(&network, 0, sizeof(struct ieee80211_network)); | |
2347 | IEEE80211_DEBUG_SCAN( | |
2348 | "'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", | |
2349 | escape_essid(info_element->data, info_element->len), | |
2350 | MAC_ARG(beacon->header.addr3), | |
2351 | (beacon->capability & (1<<0xf)) ? '1' : '0', | |
2352 | (beacon->capability & (1<<0xe)) ? '1' : '0', | |
2353 | (beacon->capability & (1<<0xd)) ? '1' : '0', | |
2354 | (beacon->capability & (1<<0xc)) ? '1' : '0', | |
2355 | (beacon->capability & (1<<0xb)) ? '1' : '0', | |
2356 | (beacon->capability & (1<<0xa)) ? '1' : '0', | |
2357 | (beacon->capability & (1<<0x9)) ? '1' : '0', | |
2358 | (beacon->capability & (1<<0x8)) ? '1' : '0', | |
2359 | (beacon->capability & (1<<0x7)) ? '1' : '0', | |
2360 | (beacon->capability & (1<<0x6)) ? '1' : '0', | |
2361 | (beacon->capability & (1<<0x5)) ? '1' : '0', | |
2362 | (beacon->capability & (1<<0x4)) ? '1' : '0', | |
2363 | (beacon->capability & (1<<0x3)) ? '1' : '0', | |
2364 | (beacon->capability & (1<<0x2)) ? '1' : '0', | |
2365 | (beacon->capability & (1<<0x1)) ? '1' : '0', | |
2366 | (beacon->capability & (1<<0x0)) ? '1' : '0'); | |
2367 | ||
2368 | if (ieee80211_network_init(ieee, beacon, &network, stats)) { | |
2369 | IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n", | |
2370 | escape_essid(info_element->data, | |
2371 | info_element->len), | |
2372 | MAC_ARG(beacon->header.addr3), | |
2373 | WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == | |
2374 | IEEE80211_STYPE_PROBE_RESP ? | |
2375 | "PROBE RESPONSE" : "BEACON"); | |
2376 | return; | |
2377 | } | |
2378 | ||
5f53d8ca JC |
2379 | // For Asus EeePc request, |
2380 | // (1) if wireless adapter receive get any 802.11d country code in AP beacon, | |
2381 | // wireless adapter should follow the country code. | |
2382 | // (2) If there is no any country code in beacon, | |
2383 | // then wireless adapter should do active scan from ch1~11 and | |
2384 | // passive scan from ch12~14 | |
2385 | ||
2386 | if( !IsLegalChannel(ieee, network.channel) ) | |
2387 | return; | |
2388 | if(ieee->bGlobalDomain) | |
2389 | { | |
2390 | if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) | |
2391 | { | |
2392 | // Case 1: Country code | |
2393 | if(IS_COUNTRY_IE_VALID(ieee) ) | |
2394 | { | |
2395 | if( !IsLegalChannel(ieee, network.channel) ) | |
2396 | { | |
2397 | printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); | |
2398 | return; | |
2399 | } | |
2400 | } | |
2401 | // Case 2: No any country code. | |
2402 | else | |
2403 | { | |
2404 | // Filter over channel ch12~14 | |
2405 | if(network.channel > 11) | |
2406 | { | |
2407 | printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); | |
2408 | return; | |
2409 | } | |
2410 | } | |
2411 | } | |
2412 | else | |
2413 | { | |
2414 | // Case 1: Country code | |
2415 | if(IS_COUNTRY_IE_VALID(ieee) ) | |
2416 | { | |
2417 | if( !IsLegalChannel(ieee, network.channel) ) | |
2418 | { | |
2419 | printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); | |
2420 | return; | |
2421 | } | |
2422 | } | |
2423 | // Case 2: No any country code. | |
2424 | else | |
2425 | { | |
2426 | // Filter over channel ch12~14 | |
2427 | if(network.channel > 14) | |
2428 | { | |
2429 | printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); | |
2430 | return; | |
2431 | } | |
2432 | } | |
2433 | } | |
2434 | } | |
5f53d8ca JC |
2435 | |
2436 | /* The network parsed correctly -- so now we scan our known networks | |
2437 | * to see if we can find it in our list. | |
2438 | * | |
2439 | * NOTE: This search is definitely not optimized. Once its doing | |
2440 | * the "right thing" we'll optimize it for efficiency if | |
2441 | * necessary */ | |
2442 | ||
2443 | /* Search for this entry in the list and update it if it is | |
2444 | * already there. */ | |
2445 | ||
2446 | spin_lock_irqsave(&ieee->lock, flags); | |
2447 | ||
2448 | if(is_same_network(&ieee->current_network, &network, ieee)) { | |
2449 | update_network(&ieee->current_network, &network); | |
2450 | if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) | |
2451 | && ieee->current_network.berp_info_valid){ | |
2452 | if(ieee->current_network.erp_value& ERP_UseProtection) | |
2453 | ieee->current_network.buseprotection = true; | |
2454 | else | |
2455 | ieee->current_network.buseprotection = false; | |
2456 | } | |
2457 | if(is_beacon(beacon->header.frame_ctl)) | |
2458 | { | |
2459 | if(ieee->state == IEEE80211_LINKED) | |
2460 | ieee->LinkDetectInfo.NumRecvBcnInPeriod++; | |
2461 | } | |
2462 | else //hidden AP | |
2463 | network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); | |
2464 | } | |
2465 | ||
2466 | list_for_each_entry(target, &ieee->network_list, list) { | |
2467 | if (is_same_network(target, &network, ieee)) | |
2468 | break; | |
2469 | if ((oldest == NULL) || | |
2470 | (target->last_scanned < oldest->last_scanned)) | |
2471 | oldest = target; | |
2472 | } | |
2473 | ||
2474 | /* If we didn't find a match, then get a new network slot to initialize | |
2475 | * with this beacon's information */ | |
2476 | if (&target->list == &ieee->network_list) { | |
2477 | if (list_empty(&ieee->network_free_list)) { | |
2478 | /* If there are no more slots, expire the oldest */ | |
2479 | list_del(&oldest->list); | |
2480 | target = oldest; | |
2481 | IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from " | |
2482 | "network list.\n", | |
2483 | escape_essid(target->ssid, | |
2484 | target->ssid_len), | |
2485 | MAC_ARG(target->bssid)); | |
2486 | } else { | |
2487 | /* Otherwise just pull from the free list */ | |
2488 | target = list_entry(ieee->network_free_list.next, | |
2489 | struct ieee80211_network, list); | |
2490 | list_del(ieee->network_free_list.next); | |
2491 | } | |
2492 | ||
2493 | ||
2494 | #ifdef CONFIG_IEEE80211_DEBUG | |
2495 | IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n", | |
2496 | escape_essid(network.ssid, | |
2497 | network.ssid_len), | |
2498 | MAC_ARG(network.bssid), | |
2499 | WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == | |
2500 | IEEE80211_STYPE_PROBE_RESP ? | |
2501 | "PROBE RESPONSE" : "BEACON"); | |
2502 | #endif | |
2503 | memcpy(target, &network, sizeof(*target)); | |
2504 | list_add_tail(&target->list, &ieee->network_list); | |
2505 | if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) | |
2506 | ieee80211_softmac_new_net(ieee,&network); | |
2507 | } else { | |
2508 | IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n", | |
2509 | escape_essid(target->ssid, | |
2510 | target->ssid_len), | |
2511 | MAC_ARG(target->bssid), | |
2512 | WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == | |
2513 | IEEE80211_STYPE_PROBE_RESP ? | |
2514 | "PROBE RESPONSE" : "BEACON"); | |
2515 | ||
2516 | /* we have an entry and we are going to update it. But this entry may | |
2517 | * be already expired. In this case we do the same as we found a new | |
2518 | * net and call the new_net handler | |
2519 | */ | |
2520 | renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); | |
2521 | //YJ,add,080819,for hidden ap | |
2522 | if(is_beacon(beacon->header.frame_ctl) == 0) | |
2523 | network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); | |
2524 | //if(strncmp(network.ssid, "linksys-c",9) == 0) | |
2525 | // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); | |
2526 | if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ | |
2527 | && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ | |
2528 | ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) | |
2529 | renew = 1; | |
2530 | //YJ,add,080819,for hidden ap,end | |
2531 | ||
2532 | update_network(target, &network); | |
2533 | if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) | |
2534 | ieee80211_softmac_new_net(ieee,&network); | |
2535 | } | |
2536 | ||
2537 | spin_unlock_irqrestore(&ieee->lock, flags); | |
2538 | if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ | |
2539 | (ieee->state == IEEE80211_LINKED)) { | |
2540 | if(ieee->handle_beacon != NULL) { | |
2541 | ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); | |
2542 | } | |
2543 | } | |
2544 | } | |
2545 | ||
2546 | void ieee80211_rx_mgt(struct ieee80211_device *ieee, | |
2547 | struct ieee80211_hdr_4addr *header, | |
2548 | struct ieee80211_rx_stats *stats) | |
2549 | { | |
2550 | if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED && | |
2551 | ieee->iw_mode == IW_MODE_INFRA && | |
2552 | ieee->state == IEEE80211_LINKED)) | |
2553 | { | |
2554 | tasklet_schedule(&ieee->ps_task); | |
2555 | } | |
2556 | ||
2557 | if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP && | |
2558 | WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON) | |
2559 | ieee->last_rx_ps_time = jiffies; | |
2560 | ||
2561 | switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { | |
2562 | ||
2563 | case IEEE80211_STYPE_BEACON: | |
2564 | IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", | |
2565 | WLAN_FC_GET_STYPE(header->frame_ctl)); | |
2566 | IEEE80211_DEBUG_SCAN("Beacon\n"); | |
2567 | ieee80211_process_probe_response( | |
2568 | ieee, (struct ieee80211_probe_response *)header, stats); | |
2569 | break; | |
2570 | ||
2571 | case IEEE80211_STYPE_PROBE_RESP: | |
2572 | IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", | |
2573 | WLAN_FC_GET_STYPE(header->frame_ctl)); | |
2574 | IEEE80211_DEBUG_SCAN("Probe response\n"); | |
2575 | ieee80211_process_probe_response( | |
2576 | ieee, (struct ieee80211_probe_response *)header, stats); | |
2577 | break; | |
2578 | ||
2579 | } | |
2580 | } |