]>
Commit | Line | Data |
---|---|---|
8fc8598e JC |
1 | /* |
2 | * Original code based Host AP (software wireless LAN access point) driver | |
3 | * for Intersil Prism2/2.5/3 - hostap.o module, common routines | |
4 | * | |
5 | * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
6 | * <jkmaline@cc.hut.fi> | |
7 | * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
8 | * Copyright (c) 2004, Intel Corporation | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. See README and COPYING for | |
13 | * more details. | |
14 | ****************************************************************************** | |
15 | ||
16 | Few modifications for Realtek's Wi-Fi drivers by | |
559a4c31 | 17 | Andrea Merello <andrea.merello@gmail.com> |
8fc8598e JC |
18 | |
19 | A special thanks goes to Realtek for their support ! | |
20 | ||
21 | ******************************************************************************/ | |
22 | ||
23 | ||
24 | #include <linux/compiler.h> | |
8fc8598e JC |
25 | #include <linux/errno.h> |
26 | #include <linux/if_arp.h> | |
27 | #include <linux/in6.h> | |
28 | #include <linux/in.h> | |
29 | #include <linux/ip.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/pci.h> | |
34 | #include <linux/proc_fs.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/types.h> | |
8fc8598e JC |
39 | #include <linux/wireless.h> |
40 | #include <linux/etherdevice.h> | |
ca67dfef | 41 | #include <linux/uaccess.h> |
8fc8598e JC |
42 | #include <linux/ctype.h> |
43 | ||
44 | #include "ieee80211.h" | |
8fc8598e | 45 | #include "dot11d.h" |
8fc8598e JC |
46 | static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, |
47 | struct sk_buff *skb, | |
48 | struct ieee80211_rx_stats *rx_stats) | |
49 | { | |
5c2918a5 | 50 | struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data; |
8fc8598e JC |
51 | u16 fc = le16_to_cpu(hdr->frame_ctl); |
52 | ||
53 | skb->dev = ieee->dev; | |
fdc64a9e | 54 | skb_reset_mac_header(skb); |
8fc8598e JC |
55 | |
56 | skb_pull(skb, ieee80211_get_hdrlen(fc)); | |
57 | skb->pkt_type = PACKET_OTHERHOST; | |
6465144c | 58 | skb->protocol = htons(ETH_P_80211_RAW); |
8fc8598e JC |
59 | memset(skb->cb, 0, sizeof(skb->cb)); |
60 | netif_rx(skb); | |
61 | } | |
62 | ||
63 | ||
64 | /* Called only as a tasklet (software IRQ) */ | |
65 | static struct ieee80211_frag_entry * | |
66 | ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, | |
0b4ef0a6 | 67 | unsigned int frag, u8 tid, u8 *src, u8 *dst) |
8fc8598e JC |
68 | { |
69 | struct ieee80211_frag_entry *entry; | |
70 | int i; | |
71 | ||
72 | for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { | |
73 | entry = &ieee->frag_cache[tid][i]; | |
74 | if (entry->skb != NULL && | |
75 | time_after(jiffies, entry->first_frag_time + 2 * HZ)) { | |
76 | IEEE80211_DEBUG_FRAG( | |
77 | "expiring fragment cache entry " | |
78 | "seq=%u last_frag=%u\n", | |
79 | entry->seq, entry->last_frag); | |
80 | dev_kfree_skb_any(entry->skb); | |
81 | entry->skb = NULL; | |
82 | } | |
83 | ||
84 | if (entry->skb != NULL && entry->seq == seq && | |
85 | (entry->last_frag + 1 == frag || frag == -1) && | |
86 | memcmp(entry->src_addr, src, ETH_ALEN) == 0 && | |
87 | memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) | |
88 | return entry; | |
89 | } | |
90 | ||
91 | return NULL; | |
92 | } | |
93 | ||
94 | /* Called only as a tasklet (software IRQ) */ | |
95 | static struct sk_buff * | |
96 | ieee80211_frag_cache_get(struct ieee80211_device *ieee, | |
5c2918a5 | 97 | struct rtl_80211_hdr_4addr *hdr) |
8fc8598e JC |
98 | { |
99 | struct sk_buff *skb = NULL; | |
100 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
101 | u16 sc = le16_to_cpu(hdr->seq_ctl); | |
102 | unsigned int frag = WLAN_GET_SEQ_FRAG(sc); | |
103 | unsigned int seq = WLAN_GET_SEQ_SEQ(sc); | |
104 | struct ieee80211_frag_entry *entry; | |
5c2918a5 PG |
105 | struct rtl_80211_hdr_3addrqos *hdr_3addrqos; |
106 | struct rtl_80211_hdr_4addrqos *hdr_4addrqos; | |
8fc8598e JC |
107 | u8 tid; |
108 | ||
109 | if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
5c2918a5 | 110 | hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr; |
8fc8598e JC |
111 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
112 | tid = UP2AC(tid); | |
113 | tid ++; | |
114 | } else if (IEEE80211_QOS_HAS_SEQ(fc)) { | |
5c2918a5 | 115 | hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr; |
8fc8598e JC |
116 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
117 | tid = UP2AC(tid); | |
118 | tid ++; | |
119 | } else { | |
120 | tid = 0; | |
121 | } | |
122 | ||
123 | if (frag == 0) { | |
124 | /* Reserve enough space to fit maximum frame length */ | |
125 | skb = dev_alloc_skb(ieee->dev->mtu + | |
5c2918a5 | 126 | sizeof(struct rtl_80211_hdr_4addr) + |
8fc8598e JC |
127 | 8 /* LLC */ + |
128 | 2 /* alignment */ + | |
129 | 8 /* WEP */ + | |
130 | ETH_ALEN /* WDS */ + | |
131 | (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); | |
6e8cb1cf | 132 | if (!skb) |
8fc8598e JC |
133 | return NULL; |
134 | ||
135 | entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; | |
136 | ieee->frag_next_idx[tid]++; | |
137 | if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) | |
138 | ieee->frag_next_idx[tid] = 0; | |
139 | ||
140 | if (entry->skb != NULL) | |
141 | dev_kfree_skb_any(entry->skb); | |
142 | ||
143 | entry->first_frag_time = jiffies; | |
144 | entry->seq = seq; | |
145 | entry->last_frag = frag; | |
146 | entry->skb = skb; | |
147 | memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); | |
148 | memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); | |
149 | } else { | |
150 | /* received a fragment of a frame for which the head fragment | |
151 | * should have already been received */ | |
152 | entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, | |
153 | hdr->addr1); | |
154 | if (entry != NULL) { | |
155 | entry->last_frag = frag; | |
156 | skb = entry->skb; | |
157 | } | |
158 | } | |
159 | ||
160 | return skb; | |
161 | } | |
162 | ||
163 | ||
164 | /* Called only as a tasklet (software IRQ) */ | |
165 | static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, | |
5c2918a5 | 166 | struct rtl_80211_hdr_4addr *hdr) |
8fc8598e JC |
167 | { |
168 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
169 | u16 sc = le16_to_cpu(hdr->seq_ctl); | |
170 | unsigned int seq = WLAN_GET_SEQ_SEQ(sc); | |
171 | struct ieee80211_frag_entry *entry; | |
5c2918a5 PG |
172 | struct rtl_80211_hdr_3addrqos *hdr_3addrqos; |
173 | struct rtl_80211_hdr_4addrqos *hdr_4addrqos; | |
8fc8598e JC |
174 | u8 tid; |
175 | ||
176 | if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
5c2918a5 | 177 | hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr; |
8fc8598e JC |
178 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
179 | tid = UP2AC(tid); | |
180 | tid ++; | |
181 | } else if (IEEE80211_QOS_HAS_SEQ(fc)) { | |
5c2918a5 | 182 | hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr; |
8fc8598e JC |
183 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
184 | tid = UP2AC(tid); | |
185 | tid ++; | |
186 | } else { | |
187 | tid = 0; | |
188 | } | |
189 | ||
0b4ef0a6 | 190 | entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2, |
8fc8598e JC |
191 | hdr->addr1); |
192 | ||
193 | if (entry == NULL) { | |
194 | IEEE80211_DEBUG_FRAG( | |
195 | "could not invalidate fragment cache " | |
196 | "entry (seq=%u)\n", seq); | |
197 | return -1; | |
198 | } | |
199 | ||
200 | entry->skb = NULL; | |
201 | return 0; | |
202 | } | |
203 | ||
204 | ||
205 | ||
206 | /* ieee80211_rx_frame_mgtmt | |
207 | * | |
208 | * Responsible for handling management control frames | |
209 | * | |
210 | * Called by ieee80211_rx */ | |
211 | static inline int | |
212 | ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, | |
213 | struct ieee80211_rx_stats *rx_stats, u16 type, | |
214 | u16 stype) | |
215 | { | |
216 | /* On the struct stats definition there is written that | |
217 | * this is not mandatory.... but seems that the probe | |
218 | * response parser uses it | |
219 | */ | |
5c2918a5 | 220 | struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; |
8fc8598e JC |
221 | |
222 | rx_stats->len = skb->len; | |
5c2918a5 | 223 | ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats); |
8236589b DU |
224 | /* if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) */ |
225 | if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))/* use ADDR1 to perform address matching for Management frames */ | |
fdc64a9e SH |
226 | { |
227 | dev_kfree_skb_any(skb); | |
228 | return 0; | |
229 | } | |
8fc8598e JC |
230 | |
231 | ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); | |
232 | ||
233 | dev_kfree_skb_any(skb); | |
234 | ||
235 | return 0; | |
236 | ||
237 | #ifdef NOT_YET | |
238 | if (ieee->iw_mode == IW_MODE_MASTER) { | |
d0bc218b | 239 | printk(KERN_DEBUG "%s: Master mode not yet supported.\n", |
8fc8598e JC |
240 | ieee->dev->name); |
241 | return 0; | |
242 | /* | |
243 | hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) | |
244 | skb->data);*/ | |
245 | } | |
246 | ||
247 | if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) { | |
248 | if (stype == WLAN_FC_STYPE_BEACON && | |
249 | ieee->iw_mode == IW_MODE_MASTER) { | |
250 | struct sk_buff *skb2; | |
251 | /* Process beacon frames also in kernel driver to | |
252 | * update STA(AP) table statistics */ | |
253 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
254 | if (skb2) | |
255 | hostap_rx(skb2->dev, skb2, rx_stats); | |
256 | } | |
257 | ||
258 | /* send management frames to the user space daemon for | |
259 | * processing */ | |
260 | ieee->apdevstats.rx_packets++; | |
261 | ieee->apdevstats.rx_bytes += skb->len; | |
262 | prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); | |
263 | return 0; | |
264 | } | |
265 | ||
266 | if (ieee->iw_mode == IW_MODE_MASTER) { | |
267 | if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { | |
268 | printk(KERN_DEBUG "%s: unknown management frame " | |
269 | "(type=0x%02x, stype=0x%02x) dropped\n", | |
270 | skb->dev->name, type, stype); | |
271 | return -1; | |
272 | } | |
273 | ||
274 | hostap_rx(skb->dev, skb, rx_stats); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " | |
279 | "received in non-Host AP mode\n", skb->dev->name); | |
280 | return -1; | |
281 | #endif | |
282 | } | |
283 | ||
284 | ||
285 | ||
286 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ | |
287 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ | |
288 | static unsigned char rfc1042_header[] = | |
289 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; | |
290 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ | |
291 | static unsigned char bridge_tunnel_header[] = | |
292 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; | |
293 | /* No encapsulation header if EtherType < 0x600 (=length) */ | |
294 | ||
295 | /* Called by ieee80211_rx_frame_decrypt */ | |
296 | static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, | |
297 | struct sk_buff *skb, size_t hdrlen) | |
298 | { | |
299 | struct net_device *dev = ieee->dev; | |
300 | u16 fc, ethertype; | |
5c2918a5 | 301 | struct rtl_80211_hdr_4addr *hdr; |
8fc8598e JC |
302 | u8 *pos; |
303 | ||
304 | if (skb->len < 24) | |
305 | return 0; | |
306 | ||
5c2918a5 | 307 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
308 | fc = le16_to_cpu(hdr->frame_ctl); |
309 | ||
310 | /* check that the frame is unicast frame to us */ | |
311 | if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
312 | IEEE80211_FCTL_TODS && | |
313 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && | |
314 | memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { | |
315 | /* ToDS frame with own addr BSSID and DA */ | |
316 | } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
317 | IEEE80211_FCTL_FROMDS && | |
318 | memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { | |
319 | /* FromDS frame with own addr as DA */ | |
320 | } else | |
321 | return 0; | |
322 | ||
323 | if (skb->len < 24 + 8) | |
324 | return 0; | |
325 | ||
326 | /* check for port access entity Ethernet type */ | |
327 | // pos = skb->data + 24; | |
328 | pos = skb->data + hdrlen; | |
329 | ethertype = (pos[6] << 8) | pos[7]; | |
330 | if (ethertype == ETH_P_PAE) | |
331 | return 1; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | /* Called only as a tasklet (software IRQ), by ieee80211_rx */ | |
337 | static inline int | |
ea77527a | 338 | ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb, |
8fc8598e JC |
339 | struct ieee80211_crypt_data *crypt) |
340 | { | |
5c2918a5 | 341 | struct rtl_80211_hdr_4addr *hdr; |
8fc8598e JC |
342 | int res, hdrlen; |
343 | ||
344 | if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) | |
345 | return 0; | |
8fc8598e JC |
346 | if (ieee->hwsec_active) |
347 | { | |
20f896c4 | 348 | struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); |
8fc8598e JC |
349 | tcb_desc->bHwSec = 1; |
350 | } | |
5c2918a5 | 351 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
352 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); |
353 | ||
8fc8598e JC |
354 | if (ieee->tkip_countermeasures && |
355 | strcmp(crypt->ops->name, "TKIP") == 0) { | |
356 | if (net_ratelimit()) { | |
357 | printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " | |
0ee9f67c JP |
358 | "received packet from %pM\n", |
359 | ieee->dev->name, hdr->addr2); | |
8fc8598e JC |
360 | } |
361 | return -1; | |
362 | } | |
8fc8598e JC |
363 | |
364 | atomic_inc(&crypt->refcnt); | |
365 | res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); | |
366 | atomic_dec(&crypt->refcnt); | |
367 | if (res < 0) { | |
368 | IEEE80211_DEBUG_DROP( | |
0ee9f67c JP |
369 | "decryption failed (SA=%pM" |
370 | ") res=%d\n", hdr->addr2, res); | |
8fc8598e JC |
371 | if (res == -2) |
372 | IEEE80211_DEBUG_DROP("Decryption failed ICV " | |
373 | "mismatch (key %d)\n", | |
374 | skb->data[hdrlen + 3] >> 6); | |
375 | ieee->ieee_stats.rx_discards_undecryptable++; | |
376 | return -1; | |
377 | } | |
378 | ||
379 | return res; | |
380 | } | |
381 | ||
382 | ||
383 | /* Called only as a tasklet (software IRQ), by ieee80211_rx */ | |
384 | static inline int | |
ea77527a | 385 | ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb, |
8fc8598e JC |
386 | int keyidx, struct ieee80211_crypt_data *crypt) |
387 | { | |
5c2918a5 | 388 | struct rtl_80211_hdr_4addr *hdr; |
8fc8598e JC |
389 | int res, hdrlen; |
390 | ||
391 | if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) | |
392 | return 0; | |
393 | if (ieee->hwsec_active) | |
394 | { | |
20f896c4 | 395 | struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); |
8fc8598e JC |
396 | tcb_desc->bHwSec = 1; |
397 | } | |
398 | ||
5c2918a5 | 399 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
400 | hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); |
401 | ||
402 | atomic_inc(&crypt->refcnt); | |
403 | res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); | |
404 | atomic_dec(&crypt->refcnt); | |
405 | if (res < 0) { | |
406 | printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" | |
0ee9f67c JP |
407 | " (SA=%pM keyidx=%d)\n", |
408 | ieee->dev->name, hdr->addr2, keyidx); | |
8fc8598e JC |
409 | return -1; |
410 | } | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | ||
416 | /* this function is stolen from ipw2200 driver*/ | |
417 | #define IEEE_PACKET_RETRY_TIME (5*HZ) | |
418 | static int is_duplicate_packet(struct ieee80211_device *ieee, | |
5c2918a5 | 419 | struct rtl_80211_hdr_4addr *header) |
8fc8598e JC |
420 | { |
421 | u16 fc = le16_to_cpu(header->frame_ctl); | |
422 | u16 sc = le16_to_cpu(header->seq_ctl); | |
423 | u16 seq = WLAN_GET_SEQ_SEQ(sc); | |
424 | u16 frag = WLAN_GET_SEQ_FRAG(sc); | |
425 | u16 *last_seq, *last_frag; | |
426 | unsigned long *last_time; | |
5c2918a5 PG |
427 | struct rtl_80211_hdr_3addrqos *hdr_3addrqos; |
428 | struct rtl_80211_hdr_4addrqos *hdr_4addrqos; | |
8fc8598e JC |
429 | u8 tid; |
430 | ||
431 | ||
432 | //TO2DS and QoS | |
433 | if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { | |
5c2918a5 | 434 | hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header; |
8fc8598e JC |
435 | tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
436 | tid = UP2AC(tid); | |
437 | tid ++; | |
438 | } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS | |
5c2918a5 | 439 | hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header; |
8fc8598e JC |
440 | tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; |
441 | tid = UP2AC(tid); | |
442 | tid ++; | |
443 | } else { // no QoS | |
444 | tid = 0; | |
445 | } | |
446 | ||
447 | switch (ieee->iw_mode) { | |
448 | case IW_MODE_ADHOC: | |
449 | { | |
450 | struct list_head *p; | |
451 | struct ieee_ibss_seq *entry = NULL; | |
452 | u8 *mac = header->addr2; | |
453 | int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; | |
0c293592 | 454 | |
8fc8598e JC |
455 | list_for_each(p, &ieee->ibss_mac_hash[index]) { |
456 | entry = list_entry(p, struct ieee_ibss_seq, list); | |
457 | if (!memcmp(entry->mac, mac, ETH_ALEN)) | |
458 | break; | |
459 | } | |
460 | // if (memcmp(entry->mac, mac, ETH_ALEN)){ | |
461 | if (p == &ieee->ibss_mac_hash[index]) { | |
462 | entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); | |
5a95f073 | 463 | if (!entry) |
8fc8598e | 464 | return 0; |
8fc8598e JC |
465 | memcpy(entry->mac, mac, ETH_ALEN); |
466 | entry->seq_num[tid] = seq; | |
467 | entry->frag_num[tid] = frag; | |
468 | entry->packet_time[tid] = jiffies; | |
469 | list_add(&entry->list, &ieee->ibss_mac_hash[index]); | |
470 | return 0; | |
471 | } | |
472 | last_seq = &entry->seq_num[tid]; | |
473 | last_frag = &entry->frag_num[tid]; | |
474 | last_time = &entry->packet_time[tid]; | |
475 | break; | |
476 | } | |
477 | ||
478 | case IW_MODE_INFRA: | |
479 | last_seq = &ieee->last_rxseq_num[tid]; | |
480 | last_frag = &ieee->last_rxfrag_num[tid]; | |
481 | last_time = &ieee->last_packet_time[tid]; | |
482 | ||
483 | break; | |
484 | default: | |
485 | return 0; | |
486 | } | |
487 | ||
488 | // if(tid != 0) { | |
489 | // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); | |
490 | // } | |
491 | if ((*last_seq == seq) && | |
492 | time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { | |
879f3074 | 493 | if (*last_frag == frag) |
8fc8598e | 494 | goto drop; |
8fc8598e JC |
495 | if (*last_frag + 1 != frag) |
496 | /* out-of-order fragment */ | |
8fc8598e JC |
497 | goto drop; |
498 | } else | |
499 | *last_seq = seq; | |
500 | ||
501 | *last_frag = frag; | |
502 | *last_time = jiffies; | |
503 | return 0; | |
504 | ||
505 | drop: | |
506 | // BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); | |
8fc8598e JC |
507 | |
508 | return 1; | |
509 | } | |
4b10d50c AR |
510 | |
511 | static bool AddReorderEntry(PRX_TS_RECORD pTS, PRX_REORDER_ENTRY pReorderEntry) | |
8fc8598e JC |
512 | { |
513 | struct list_head *pList = &pTS->RxPendingPktList; | |
8fc8598e JC |
514 | while(pList->next != &pTS->RxPendingPktList) |
515 | { | |
516 | if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) | |
517 | { | |
518 | pList = pList->next; | |
519 | } | |
520 | else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) | |
521 | { | |
522 | return false; | |
523 | } | |
524 | else | |
525 | { | |
526 | break; | |
527 | } | |
528 | } | |
8fc8598e JC |
529 | pReorderEntry->List.next = pList->next; |
530 | pReorderEntry->List.next->prev = &pReorderEntry->List; | |
531 | pReorderEntry->List.prev = pList; | |
532 | pList->next = &pReorderEntry->List; | |
533 | ||
534 | return true; | |
535 | } | |
536 | ||
ea77527a | 537 | void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index) |
8fc8598e JC |
538 | { |
539 | u8 i = 0 , j=0; | |
540 | u16 ethertype; | |
541 | // if(index > 1) | |
f8628a47 | 542 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__func__,index); |
8fc8598e JC |
543 | for(j = 0; j<index; j++) |
544 | { | |
545 | //added by amy for reorder | |
ea77527a | 546 | struct ieee80211_rxb *prxb = prxbIndicateArray[j]; |
8fc8598e JC |
547 | for(i = 0; i<prxb->nr_subframes; i++) { |
548 | struct sk_buff *sub_skb = prxb->subframes[i]; | |
549 | ||
550 | /* convert hdr + possible LLC headers into Ethernet header */ | |
551 | ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; | |
552 | if (sub_skb->len >= 8 && | |
553 | ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && | |
554 | ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || | |
555 | memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { | |
556 | /* remove RFC1042 or Bridge-Tunnel encapsulation and | |
557 | * replace EtherType */ | |
558 | skb_pull(sub_skb, SNAP_SIZE); | |
559 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); | |
560 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); | |
561 | } else { | |
8fc8598e | 562 | /* Leave Ethernet header part of hdr and full payload */ |
1c19f379 | 563 | put_unaligned_be16(sub_skb->len, skb_push(sub_skb, 2)); |
8fc8598e JC |
564 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); |
565 | memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); | |
566 | } | |
567 | //stats->rx_packets++; | |
568 | //stats->rx_bytes += sub_skb->len; | |
569 | ||
570 | /* Indicat the packets to upper layer */ | |
571 | if (sub_skb) { | |
8fc8598e JC |
572 | sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); |
573 | memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); | |
574 | sub_skb->dev = ieee->dev; | |
575 | sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ | |
576 | //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ | |
577 | ieee->last_rx_ps_time = jiffies; | |
8fc8598e JC |
578 | netif_rx(sub_skb); |
579 | } | |
580 | } | |
581 | kfree(prxb); | |
582 | prxb = NULL; | |
583 | } | |
584 | } | |
585 | ||
586 | ||
4b10d50c AR |
587 | static void RxReorderIndicatePacket(struct ieee80211_device *ieee, |
588 | struct ieee80211_rxb *prxb, | |
589 | PRX_TS_RECORD pTS, u16 SeqNum) | |
8fc8598e JC |
590 | { |
591 | PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; | |
35997ff0 | 592 | PRX_REORDER_ENTRY pReorderEntry = NULL; |
79a5ccd9 | 593 | struct ieee80211_rxb **prxbIndicateArray; |
8fc8598e JC |
594 | u8 WinSize = pHTInfo->RxReorderWinSize; |
595 | u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; | |
596 | u8 index = 0; | |
597 | bool bMatchWinStart = false, bPktInBuf = false; | |
f8628a47 | 598 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize); |
79a5ccd9 OK |
599 | |
600 | prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) * | |
601 | REORDER_WIN_SIZE, GFP_KERNEL); | |
602 | if (!prxbIndicateArray) | |
603 | return; | |
604 | ||
8fc8598e | 605 | /* Rx Reorder initialize condition.*/ |
dde48b99 | 606 | if (pTS->RxIndicateSeq == 0xffff) { |
8fc8598e JC |
607 | pTS->RxIndicateSeq = SeqNum; |
608 | } | |
609 | ||
610 | /* Drop out the packet which SeqNum is smaller than WinStart */ | |
dde48b99 | 611 | if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) { |
8fc8598e JC |
612 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", |
613 | pTS->RxIndicateSeq, SeqNum); | |
614 | pHTInfo->RxReorderDropCounter++; | |
615 | { | |
616 | int i; | |
617 | for(i =0; i < prxb->nr_subframes; i++) { | |
618 | dev_kfree_skb(prxb->subframes[i]); | |
619 | } | |
620 | kfree(prxb); | |
621 | prxb = NULL; | |
622 | } | |
79a5ccd9 OK |
623 | |
624 | kfree(prxbIndicateArray); | |
8fc8598e JC |
625 | return; |
626 | } | |
627 | ||
628 | /* | |
629 | * Sliding window manipulation. Conditions includes: | |
630 | * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 | |
631 | * 2. Incoming SeqNum is larger than the WinEnd => Window shift N | |
632 | */ | |
633 | if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { | |
634 | pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; | |
635 | bMatchWinStart = true; | |
636 | } else if(SN_LESS(WinEnd, SeqNum)) { | |
637 | if(SeqNum >= (WinSize - 1)) { | |
638 | pTS->RxIndicateSeq = SeqNum + 1 -WinSize; | |
639 | } else { | |
640 | pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; | |
641 | } | |
642 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
643 | } | |
644 | ||
645 | /* | |
646 | * Indication process. | |
647 | * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets | |
648 | * with the SeqNum smaller than latest WinStart and buffer other packets. | |
649 | */ | |
650 | /* For Rx Reorder condition: | |
651 | * 1. All packets with SeqNum smaller than WinStart => Indicate | |
652 | * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. | |
653 | */ | |
654 | if(bMatchWinStart) { | |
655 | /* Current packet is going to be indicated.*/ | |
656 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ | |
657 | pTS->RxIndicateSeq, SeqNum); | |
658 | prxbIndicateArray[0] = prxb; | |
f8628a47 | 659 | // printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum); |
8fc8598e JC |
660 | index = 1; |
661 | } else { | |
662 | /* Current packet is going to be inserted into pending list.*/ | |
f8628a47 | 663 | //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__); |
8fc8598e JC |
664 | if(!list_empty(&ieee->RxReorder_Unused_List)) { |
665 | pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); | |
666 | list_del_init(&pReorderEntry->List); | |
667 | ||
668 | /* Make a reorder entry and insert into a the packet list.*/ | |
669 | pReorderEntry->SeqNum = SeqNum; | |
670 | pReorderEntry->prxb = prxb; | |
f8628a47 | 671 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum); |
8fc8598e | 672 | |
8fc8598e JC |
673 | if(!AddReorderEntry(pTS, pReorderEntry)) { |
674 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", | |
f8628a47 | 675 | __func__, pTS->RxIndicateSeq, SeqNum); |
8fc8598e JC |
676 | list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); |
677 | { | |
678 | int i; | |
679 | for(i =0; i < prxb->nr_subframes; i++) { | |
680 | dev_kfree_skb(prxb->subframes[i]); | |
681 | } | |
682 | kfree(prxb); | |
683 | prxb = NULL; | |
684 | } | |
685 | } else { | |
686 | IEEE80211_DEBUG(IEEE80211_DL_REORDER, | |
687 | "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
688 | } | |
8fc8598e JC |
689 | } |
690 | else { | |
691 | /* | |
692 | * Packets are dropped if there is not enough reorder entries. | |
693 | * This part shall be modified!! We can just indicate all the | |
694 | * packets in buffer and get reorder entries. | |
695 | */ | |
696 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); | |
697 | { | |
698 | int i; | |
699 | for(i =0; i < prxb->nr_subframes; i++) { | |
700 | dev_kfree_skb(prxb->subframes[i]); | |
701 | } | |
702 | kfree(prxb); | |
703 | prxb = NULL; | |
704 | } | |
705 | } | |
706 | } | |
707 | ||
708 | /* Check if there is any packet need indicate.*/ | |
709 | while(!list_empty(&pTS->RxPendingPktList)) { | |
f8628a47 | 710 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__); |
8fc8598e | 711 | pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); |
d59d6f5d GD |
712 | if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || |
713 | SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) | |
8fc8598e JC |
714 | { |
715 | /* This protect buffer from overflow. */ | |
dde48b99 | 716 | if (index >= REORDER_WIN_SIZE) { |
8fc8598e JC |
717 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); |
718 | bPktInBuf = true; | |
719 | break; | |
720 | } | |
721 | ||
722 | list_del_init(&pReorderEntry->List); | |
723 | ||
724 | if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) | |
725 | pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; | |
726 | ||
727 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); | |
728 | prxbIndicateArray[index] = pReorderEntry->prxb; | |
f8628a47 | 729 | // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum); |
8fc8598e JC |
730 | index++; |
731 | ||
732 | list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); | |
733 | } else { | |
734 | bPktInBuf = true; | |
735 | break; | |
736 | } | |
8fc8598e JC |
737 | } |
738 | ||
739 | /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ | |
dde48b99 | 740 | if (index>0) { |
8fc8598e JC |
741 | // Cancel previous pending timer. |
742 | // del_timer_sync(&pTS->RxPktPendingTimer); | |
743 | pTS->RxTimeoutIndicateSeq = 0xffff; | |
744 | ||
745 | // Indicate packets | |
746 | if(index>REORDER_WIN_SIZE){ | |
58493d8e | 747 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n"); |
79a5ccd9 | 748 | kfree(prxbIndicateArray); |
8fc8598e JC |
749 | return; |
750 | } | |
751 | ieee80211_indicate_packets(ieee, prxbIndicateArray, index); | |
752 | } | |
753 | ||
dde48b99 | 754 | if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { |
8fc8598e | 755 | // Set new pending timer. |
f8628a47 | 756 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__); |
8fc8598e JC |
757 | pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; |
758 | if(timer_pending(&pTS->RxPktPendingTimer)) | |
759 | del_timer_sync(&pTS->RxPktPendingTimer); | |
b1d96609 AKC |
760 | pTS->RxPktPendingTimer.expires = jiffies + |
761 | msecs_to_jiffies(pHTInfo->RxReorderPendingTime); | |
8fc8598e JC |
762 | add_timer(&pTS->RxPktPendingTimer); |
763 | } | |
79a5ccd9 OK |
764 | |
765 | kfree(prxbIndicateArray); | |
8fc8598e JC |
766 | } |
767 | ||
4b10d50c AR |
768 | static u8 parse_subframe(struct sk_buff *skb, |
769 | struct ieee80211_rx_stats *rx_stats, | |
0b4ef0a6 | 770 | struct ieee80211_rxb *rxb, u8 *src, u8 *dst) |
8fc8598e | 771 | { |
5c2918a5 | 772 | struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; |
8fc8598e JC |
773 | u16 fc = le16_to_cpu(hdr->frame_ctl); |
774 | ||
5c2918a5 | 775 | u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr); |
8fc8598e JC |
776 | u16 ChkLength; |
777 | bool bIsAggregateFrame = false; | |
778 | u16 nSubframe_Length; | |
779 | u8 nPadding_Length = 0; | |
780 | u16 SeqNum=0; | |
781 | ||
782 | struct sk_buff *sub_skb; | |
783 | u8 *data_ptr; | |
784 | /* just for debug purpose */ | |
785 | SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); | |
786 | ||
dde48b99 | 787 | if ((IEEE80211_QOS_HAS_SEQ(fc))&&\ |
8fc8598e JC |
788 | (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { |
789 | bIsAggregateFrame = true; | |
790 | } | |
791 | ||
dde48b99 | 792 | if (IEEE80211_QOS_HAS_SEQ(fc)) { |
8fc8598e JC |
793 | LLCOffset += 2; |
794 | } | |
795 | ||
dde48b99 | 796 | if (rx_stats->bContainHTC) { |
8fc8598e JC |
797 | LLCOffset += sHTCLng; |
798 | } | |
8fc8598e JC |
799 | // Null packet, don't indicate it to upper layer |
800 | ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ | |
801 | ||
d59d6f5d | 802 | if (skb->len <= ChkLength) |
8fc8598e | 803 | return 0; |
8fc8598e JC |
804 | |
805 | skb_pull(skb, LLCOffset); | |
806 | ||
807 | if(!bIsAggregateFrame) { | |
808 | rxb->nr_subframes = 1; | |
809 | #ifdef JOHN_NOCPY | |
810 | rxb->subframes[0] = skb; | |
811 | #else | |
812 | rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC); | |
813 | #endif | |
814 | ||
815 | memcpy(rxb->src,src,ETH_ALEN); | |
816 | memcpy(rxb->dst,dst,ETH_ALEN); | |
817 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len); | |
818 | return 1; | |
819 | } else { | |
820 | rxb->nr_subframes = 0; | |
821 | memcpy(rxb->src,src,ETH_ALEN); | |
822 | memcpy(rxb->dst,dst,ETH_ALEN); | |
823 | while(skb->len > ETHERNET_HEADER_SIZE) { | |
824 | /* Offset 12 denote 2 mac address */ | |
ea77527a | 825 | nSubframe_Length = *((u16 *)(skb->data + 12)); |
8fc8598e JC |
826 | //==m==>change the length order |
827 | nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8); | |
828 | ||
dde48b99 | 829 | if (skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) { |
8fc8598e | 830 | printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\ |
0b4ef0a6 | 831 | __func__, rxb->nr_subframes); |
f8628a47 | 832 | printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, nSubframe_Length); |
8fc8598e JC |
833 | printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length); |
834 | printk("The Packet SeqNum is %d\n",SeqNum); | |
835 | return 0; | |
836 | } | |
837 | ||
838 | /* move the data point to data content */ | |
839 | skb_pull(skb, ETHERNET_HEADER_SIZE); | |
840 | ||
841 | #ifdef JOHN_NOCPY | |
842 | sub_skb = skb_clone(skb, GFP_ATOMIC); | |
843 | sub_skb->len = nSubframe_Length; | |
844 | sub_skb->tail = sub_skb->data + nSubframe_Length; | |
845 | #else | |
846 | /* Allocate new skb for releasing to upper layer */ | |
847 | sub_skb = dev_alloc_skb(nSubframe_Length + 12); | |
79d99c30 VK |
848 | if (!sub_skb) |
849 | return 0; | |
8fc8598e | 850 | skb_reserve(sub_skb, 12); |
59ae1d12 JB |
851 | data_ptr = skb_put_data(sub_skb, skb->data, |
852 | nSubframe_Length); | |
8fc8598e JC |
853 | #endif |
854 | rxb->subframes[rxb->nr_subframes++] = sub_skb; | |
dde48b99 | 855 | if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) { |
8fc8598e JC |
856 | IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n"); |
857 | break; | |
858 | } | |
0b4ef0a6 | 859 | skb_pull(skb, nSubframe_Length); |
8fc8598e | 860 | |
dde48b99 | 861 | if (skb->len != 0) { |
8fc8598e | 862 | nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4); |
dde48b99 | 863 | if (nPadding_Length == 4) { |
8fc8598e JC |
864 | nPadding_Length = 0; |
865 | } | |
866 | ||
dde48b99 | 867 | if (skb->len < nPadding_Length) { |
8fc8598e JC |
868 | return 0; |
869 | } | |
870 | ||
0b4ef0a6 | 871 | skb_pull(skb, nPadding_Length); |
8fc8598e JC |
872 | } |
873 | } | |
874 | #ifdef JOHN_NOCPY | |
875 | dev_kfree_skb(skb); | |
876 | #endif | |
877 | //{just for debug added by david | |
878 | //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes); | |
879 | //} | |
880 | return rxb->nr_subframes; | |
881 | } | |
882 | } | |
883 | ||
884 | /* All received frames are sent to this function. @skb contains the frame in | |
885 | * IEEE 802.11 format, i.e., in the format it was sent over air. | |
886 | * This function is called only as a tasklet (software IRQ). */ | |
887 | int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, | |
888 | struct ieee80211_rx_stats *rx_stats) | |
889 | { | |
890 | struct net_device *dev = ieee->dev; | |
5c2918a5 PG |
891 | struct rtl_80211_hdr_4addr *hdr; |
892 | //struct rtl_80211_hdr_3addrqos *hdr; | |
8fc8598e JC |
893 | |
894 | size_t hdrlen; | |
895 | u16 fc, type, stype, sc; | |
896 | struct net_device_stats *stats; | |
897 | unsigned int frag; | |
898 | u8 *payload; | |
899 | u16 ethertype; | |
900 | //added by amy for reorder | |
901 | u8 TID = 0; | |
902 | u16 SeqNum = 0; | |
903 | PRX_TS_RECORD pTS = NULL; | |
904 | //bool bIsAggregateFrame = false; | |
905 | //added by amy for reorder | |
906 | #ifdef NOT_YET | |
907 | struct net_device *wds = NULL; | |
8fc8598e | 908 | struct net_device *wds = NULL; |
8fc8598e JC |
909 | int from_assoc_ap = 0; |
910 | void *sta = NULL; | |
911 | #endif | |
912 | // u16 qos_ctl = 0; | |
913 | u8 dst[ETH_ALEN]; | |
914 | u8 src[ETH_ALEN]; | |
915 | u8 bssid[ETH_ALEN]; | |
916 | struct ieee80211_crypt_data *crypt = NULL; | |
917 | int keyidx = 0; | |
918 | ||
919 | int i; | |
ea77527a | 920 | struct ieee80211_rxb *rxb = NULL; |
cd63eb0c | 921 | // cheat the hdr type |
5c2918a5 | 922 | hdr = (struct rtl_80211_hdr_4addr *)skb->data; |
8fc8598e JC |
923 | stats = &ieee->stats; |
924 | ||
925 | if (skb->len < 10) { | |
926 | printk(KERN_INFO "%s: SKB length < 10\n", | |
927 | dev->name); | |
928 | goto rx_dropped; | |
929 | } | |
930 | ||
931 | fc = le16_to_cpu(hdr->frame_ctl); | |
932 | type = WLAN_FC_GET_TYPE(fc); | |
933 | stype = WLAN_FC_GET_STYPE(fc); | |
934 | sc = le16_to_cpu(hdr->seq_ctl); | |
935 | ||
936 | frag = WLAN_GET_SEQ_FRAG(sc); | |
937 | hdrlen = ieee80211_get_hdrlen(fc); | |
938 | ||
dde48b99 | 939 | if (HTCCheck(ieee, skb->data)) |
8fc8598e JC |
940 | { |
941 | if(net_ratelimit()) | |
8ad835b9 | 942 | printk("find HTCControl\n"); |
8fc8598e | 943 | hdrlen += 4; |
19cd2297 | 944 | rx_stats->bContainHTC = true; |
8fc8598e JC |
945 | } |
946 | ||
947 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); | |
948 | #ifdef NOT_YET | |
8fc8598e JC |
949 | /* Put this code here so that we avoid duplicating it in all |
950 | * Rx paths. - Jean II */ | |
951 | #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ | |
952 | /* If spy monitoring on */ | |
953 | if (iface->spy_data.spy_number > 0) { | |
954 | struct iw_quality wstats; | |
955 | wstats.level = rx_stats->rssi; | |
956 | wstats.noise = rx_stats->noise; | |
957 | wstats.updated = 6; /* No qual value */ | |
958 | /* Update spy records */ | |
959 | wireless_spy_update(dev, hdr->addr2, &wstats); | |
960 | } | |
961 | #endif /* IW_WIRELESS_SPY */ | |
8fc8598e JC |
962 | hostap_update_rx_stats(local->ap, hdr, rx_stats); |
963 | #endif | |
964 | ||
8fc8598e JC |
965 | if (ieee->iw_mode == IW_MODE_MONITOR) { |
966 | ieee80211_monitor_rx(ieee, skb, rx_stats); | |
967 | stats->rx_packets++; | |
968 | stats->rx_bytes += skb->len; | |
969 | return 1; | |
970 | } | |
e6c1ef6c | 971 | |
8fc8598e JC |
972 | if (ieee->host_decrypt) { |
973 | int idx = 0; | |
974 | if (skb->len >= hdrlen + 3) | |
975 | idx = skb->data[hdrlen + 3] >> 6; | |
976 | crypt = ieee->crypt[idx]; | |
977 | #ifdef NOT_YET | |
978 | sta = NULL; | |
979 | ||
980 | /* Use station specific key to override default keys if the | |
981 | * receiver address is a unicast address ("individual RA"). If | |
982 | * bcrx_sta_key parameter is set, station specific key is used | |
983 | * even with broad/multicast targets (this is against IEEE | |
984 | * 802.11, but makes it easier to use different keys with | |
985 | * stations that do not support WEP key mapping). */ | |
986 | ||
987 | if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) | |
988 | (void) hostap_handle_sta_crypto(local, hdr, &crypt, | |
989 | &sta); | |
990 | #endif | |
991 | ||
992 | /* allow NULL decrypt to indicate an station specific override | |
993 | * for default encryption */ | |
994 | if (crypt && (crypt->ops == NULL || | |
995 | crypt->ops->decrypt_mpdu == NULL)) | |
996 | crypt = NULL; | |
997 | ||
998 | if (!crypt && (fc & IEEE80211_FCTL_WEP)) { | |
999 | /* This seems to be triggered by some (multicast?) | |
1000 | * frames from other than current BSS, so just drop the | |
1001 | * frames silently instead of filling system log with | |
1002 | * these reports. */ | |
1003 | IEEE80211_DEBUG_DROP("Decryption failed (not set)" | |
0ee9f67c JP |
1004 | " (SA=%pM)\n", |
1005 | hdr->addr2); | |
8fc8598e JC |
1006 | ieee->ieee_stats.rx_discards_undecryptable++; |
1007 | goto rx_dropped; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | if (skb->len < IEEE80211_DATA_HDR3_LEN) | |
1012 | goto rx_dropped; | |
1013 | ||
1014 | // if QoS enabled, should check the sequence for each of the AC | |
f9bd549a | 1015 | if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) { |
8fc8598e JC |
1016 | if (is_duplicate_packet(ieee, hdr)) |
1017 | goto rx_dropped; | |
1018 | ||
1019 | } | |
1020 | else | |
1021 | { | |
1022 | PRX_TS_RECORD pRxTS = NULL; | |
f8628a47 | 1023 | //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid); |
8fc8598e JC |
1024 | if(GetTs( |
1025 | ieee, | |
ea77527a | 1026 | (PTS_COMMON_INFO *) &pRxTS, |
8fc8598e | 1027 | hdr->addr2, |
efdcb35a | 1028 | Frame_QoSTID((u8 *)(skb->data)), |
8fc8598e JC |
1029 | RX_DIR, |
1030 | true)) | |
1031 | { | |
1032 | ||
f8628a47 | 1033 | // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__func__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc)); |
d59d6f5d GD |
1034 | if ((fc & (1<<11)) && |
1035 | (frag == pRxTS->RxLastFragNum) && | |
1036 | (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) { | |
8fc8598e JC |
1037 | goto rx_dropped; |
1038 | } | |
1039 | else | |
1040 | { | |
1041 | pRxTS->RxLastFragNum = frag; | |
1042 | pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); | |
1043 | } | |
1044 | } | |
1045 | else | |
1046 | { | |
f8628a47 | 1047 | IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__); |
8fc8598e JC |
1048 | goto rx_dropped; |
1049 | } | |
1050 | } | |
8fc8598e JC |
1051 | if (type == IEEE80211_FTYPE_MGMT) { |
1052 | ||
8fc8598e JC |
1053 | |
1054 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); | |
1055 | if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) | |
1056 | goto rx_dropped; | |
1057 | else | |
1058 | goto rx_exit; | |
1059 | } | |
1060 | ||
1061 | /* Data frame - extract src/dst addresses */ | |
1062 | switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { | |
1063 | case IEEE80211_FCTL_FROMDS: | |
1064 | memcpy(dst, hdr->addr1, ETH_ALEN); | |
1065 | memcpy(src, hdr->addr3, ETH_ALEN); | |
1066 | memcpy(bssid, hdr->addr2, ETH_ALEN); | |
1067 | break; | |
1068 | case IEEE80211_FCTL_TODS: | |
1069 | memcpy(dst, hdr->addr3, ETH_ALEN); | |
1070 | memcpy(src, hdr->addr2, ETH_ALEN); | |
1071 | memcpy(bssid, hdr->addr1, ETH_ALEN); | |
1072 | break; | |
1073 | case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: | |
1074 | if (skb->len < IEEE80211_DATA_HDR4_LEN) | |
1075 | goto rx_dropped; | |
1076 | memcpy(dst, hdr->addr3, ETH_ALEN); | |
1077 | memcpy(src, hdr->addr4, ETH_ALEN); | |
1078 | memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); | |
1079 | break; | |
5d43dfdb | 1080 | default: |
8fc8598e JC |
1081 | memcpy(dst, hdr->addr1, ETH_ALEN); |
1082 | memcpy(src, hdr->addr2, ETH_ALEN); | |
1083 | memcpy(bssid, hdr->addr3, ETH_ALEN); | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | #ifdef NOT_YET | |
1088 | if (hostap_rx_frame_wds(ieee, hdr, fc, &wds)) | |
1089 | goto rx_dropped; | |
1090 | if (wds) { | |
1091 | skb->dev = dev = wds; | |
1092 | stats = hostap_get_stats(dev); | |
1093 | } | |
1094 | ||
1095 | if (ieee->iw_mode == IW_MODE_MASTER && !wds && | |
1096 | (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS && | |
1097 | ieee->stadev && | |
1098 | memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) { | |
1099 | /* Frame from BSSID of the AP for which we are a client */ | |
1100 | skb->dev = dev = ieee->stadev; | |
1101 | stats = hostap_get_stats(dev); | |
1102 | from_assoc_ap = 1; | |
1103 | } | |
8fc8598e | 1104 | |
8fc8598e JC |
1105 | if ((ieee->iw_mode == IW_MODE_MASTER || |
1106 | ieee->iw_mode == IW_MODE_REPEAT) && | |
1107 | !from_assoc_ap) { | |
1108 | switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, | |
1109 | wds != NULL)) { | |
1110 | case AP_RX_CONTINUE_NOT_AUTHORIZED: | |
8fc8598e | 1111 | case AP_RX_CONTINUE: |
8fc8598e JC |
1112 | break; |
1113 | case AP_RX_DROP: | |
1114 | goto rx_dropped; | |
1115 | case AP_RX_EXIT: | |
1116 | goto rx_exit; | |
1117 | } | |
1118 | } | |
1119 | #endif | |
1120 | //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); | |
1121 | /* Nullfunc frames may have PS-bit set, so they must be passed to | |
1122 | * hostap_handle_sta_rx() before being dropped here. */ | |
1123 | if (stype != IEEE80211_STYPE_DATA && | |
1124 | stype != IEEE80211_STYPE_DATA_CFACK && | |
1125 | stype != IEEE80211_STYPE_DATA_CFPOLL && | |
1126 | stype != IEEE80211_STYPE_DATA_CFACKPOLL&& | |
1127 | stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 | |
1128 | ) { | |
1129 | if (stype != IEEE80211_STYPE_NULLFUNC) | |
1130 | IEEE80211_DEBUG_DROP( | |
1131 | "RX: dropped data frame " | |
1132 | "with no data (type=0x%02x, " | |
1133 | "subtype=0x%02x, len=%d)\n", | |
1134 | type, stype, skb->len); | |
1135 | goto rx_dropped; | |
1136 | } | |
fdc64a9e SH |
1137 | if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) |
1138 | goto rx_dropped; | |
8fc8598e JC |
1139 | |
1140 | /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ | |
1141 | ||
1142 | if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1143 | (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) | |
1144 | { | |
1145 | printk("decrypt frame error\n"); | |
1146 | goto rx_dropped; | |
1147 | } | |
1148 | ||
1149 | ||
5c2918a5 | 1150 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
1151 | |
1152 | /* skb: hdr + (possibly fragmented) plaintext payload */ | |
1153 | // PR: FIXME: hostap has additional conditions in the "if" below: | |
1154 | // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1155 | if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { | |
1156 | int flen; | |
1157 | struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); | |
1158 | IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); | |
1159 | ||
1160 | if (!frag_skb) { | |
1161 | IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, | |
1162 | "Rx cannot get skb from fragment " | |
1163 | "cache (morefrag=%d seq=%u frag=%u)\n", | |
1164 | (fc & IEEE80211_FCTL_MOREFRAGS) != 0, | |
1165 | WLAN_GET_SEQ_SEQ(sc), frag); | |
1166 | goto rx_dropped; | |
1167 | } | |
1168 | flen = skb->len; | |
1169 | if (frag != 0) | |
1170 | flen -= hdrlen; | |
1171 | ||
1172 | if (frag_skb->tail + flen > frag_skb->end) { | |
1173 | printk(KERN_WARNING "%s: host decrypted and " | |
1174 | "reassembled frame did not fit skb\n", | |
1175 | dev->name); | |
1176 | ieee80211_frag_cache_invalidate(ieee, hdr); | |
1177 | goto rx_dropped; | |
1178 | } | |
1179 | ||
1180 | if (frag == 0) { | |
1181 | /* copy first fragment (including full headers) into | |
1182 | * beginning of the fragment cache skb */ | |
59ae1d12 | 1183 | skb_put_data(frag_skb, skb->data, flen); |
8fc8598e JC |
1184 | } else { |
1185 | /* append frame payload to the end of the fragment | |
1186 | * cache skb */ | |
59ae1d12 | 1187 | skb_put_data(frag_skb, skb->data + hdrlen, flen); |
8fc8598e JC |
1188 | } |
1189 | dev_kfree_skb_any(skb); | |
1190 | skb = NULL; | |
1191 | ||
1192 | if (fc & IEEE80211_FCTL_MOREFRAGS) { | |
1193 | /* more fragments expected - leave the skb in fragment | |
1194 | * cache for now; it will be delivered to upper layers | |
1195 | * after all fragments have been received */ | |
1196 | goto rx_exit; | |
1197 | } | |
1198 | ||
1199 | /* this was the last fragment and the frame will be | |
1200 | * delivered, so remove skb from fragment cache */ | |
1201 | skb = frag_skb; | |
5c2918a5 | 1202 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
1203 | ieee80211_frag_cache_invalidate(ieee, hdr); |
1204 | } | |
1205 | ||
1206 | /* skb: hdr + (possible reassembled) full MSDU payload; possibly still | |
1207 | * encrypted/authenticated */ | |
1208 | if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && | |
1209 | ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) | |
1210 | { | |
1211 | printk("==>decrypt msdu error\n"); | |
1212 | goto rx_dropped; | |
1213 | } | |
1214 | ||
1215 | //added by amy for AP roaming | |
1216 | ieee->LinkDetectInfo.NumRecvDataInPeriod++; | |
1217 | ieee->LinkDetectInfo.NumRxOkInPeriod++; | |
1218 | ||
5c2918a5 | 1219 | hdr = (struct rtl_80211_hdr_4addr *) skb->data; |
8fc8598e JC |
1220 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { |
1221 | if (/*ieee->ieee802_1x &&*/ | |
1222 | ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1223 | ||
1224 | #ifdef CONFIG_IEEE80211_DEBUG | |
1225 | /* pass unencrypted EAPOL frames even if encryption is | |
1226 | * configured */ | |
1227 | struct eapol *eap = (struct eapol *)(skb->data + | |
1228 | 24); | |
1229 | IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", | |
1230 | eap_get_type(eap->type)); | |
1231 | #endif | |
1232 | } else { | |
1233 | IEEE80211_DEBUG_DROP( | |
1234 | "encryption configured, but RX " | |
0ee9f67c JP |
1235 | "frame not encrypted (SA=%pM)\n", |
1236 | hdr->addr2); | |
8fc8598e JC |
1237 | goto rx_dropped; |
1238 | } | |
1239 | } | |
1240 | ||
1241 | #ifdef CONFIG_IEEE80211_DEBUG | |
1242 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && | |
1243 | ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1244 | struct eapol *eap = (struct eapol *)(skb->data + | |
1245 | 24); | |
1246 | IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", | |
1247 | eap_get_type(eap->type)); | |
1248 | } | |
1249 | #endif | |
1250 | ||
1251 | if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && | |
1252 | !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1253 | IEEE80211_DEBUG_DROP( | |
1254 | "dropped unencrypted RX data " | |
0ee9f67c | 1255 | "frame from %pM" |
8fc8598e | 1256 | " (drop_unencrypted=1)\n", |
0ee9f67c | 1257 | hdr->addr2); |
8fc8598e JC |
1258 | goto rx_dropped; |
1259 | } | |
1260 | /* | |
1261 | if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { | |
1262 | printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); | |
1263 | } | |
1264 | */ | |
1265 | //added by amy for reorder | |
dde48b99 | 1266 | if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) |
14fc4235 | 1267 | && !is_multicast_ether_addr(hdr->addr1)) |
8fc8598e JC |
1268 | { |
1269 | TID = Frame_QoSTID(skb->data); | |
1270 | SeqNum = WLAN_GET_SEQ_SEQ(sc); | |
ea77527a | 1271 | GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true); |
dde48b99 | 1272 | if (TID !=0 && TID !=3) |
8fc8598e JC |
1273 | { |
1274 | ieee->bis_any_nonbepkts = true; | |
1275 | } | |
1276 | } | |
8fc8598e JC |
1277 | //added by amy for reorder |
1278 | /* skb: hdr + (possible reassembled) full plaintext payload */ | |
1279 | payload = skb->data + hdrlen; | |
1280 | //ethertype = (payload[6] << 8) | payload[7]; | |
32414878 | 1281 | rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); |
61645cc3 | 1282 | if (!rxb) |
8fc8598e | 1283 | goto rx_dropped; |
8fc8598e JC |
1284 | /* to parse amsdu packets */ |
1285 | /* qos data packets & reserved bit is 1 */ | |
0b4ef0a6 | 1286 | if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) { |
8fc8598e JC |
1287 | /* only to free rxb, and not submit the packets to upper layer */ |
1288 | for(i =0; i < rxb->nr_subframes; i++) { | |
1289 | dev_kfree_skb(rxb->subframes[i]); | |
1290 | } | |
1291 | kfree(rxb); | |
1292 | rxb = NULL; | |
1293 | goto rx_dropped; | |
1294 | } | |
1295 | ||
1296 | //added by amy for reorder | |
f9bd549a | 1297 | if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){ |
8fc8598e JC |
1298 | //added by amy for reorder |
1299 | for(i = 0; i<rxb->nr_subframes; i++) { | |
1300 | struct sk_buff *sub_skb = rxb->subframes[i]; | |
1301 | ||
1302 | if (sub_skb) { | |
1303 | /* convert hdr + possible LLC headers into Ethernet header */ | |
1304 | ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; | |
1305 | if (sub_skb->len >= 8 && | |
1306 | ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && | |
1307 | ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || | |
1308 | memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { | |
1309 | /* remove RFC1042 or Bridge-Tunnel encapsulation and | |
1310 | * replace EtherType */ | |
1311 | skb_pull(sub_skb, SNAP_SIZE); | |
1312 | memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); | |
1313 | memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); | |
1314 | } else { | |
1315 | u16 len; | |
1316 | /* Leave Ethernet header part of hdr and full payload */ | |
86d7726d | 1317 | len = be16_to_cpu(htons(sub_skb->len)); |
8fc8598e JC |
1318 | memcpy(skb_push(sub_skb, 2), &len, 2); |
1319 | memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); | |
1320 | memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); | |
1321 | } | |
1322 | ||
1323 | stats->rx_packets++; | |
1324 | stats->rx_bytes += sub_skb->len; | |
dde48b99 | 1325 | if (is_multicast_ether_addr(dst)) { |
8fc8598e JC |
1326 | stats->multicast++; |
1327 | } | |
1328 | ||
1329 | /* Indicat the packets to upper layer */ | |
8fc8598e JC |
1330 | sub_skb->protocol = eth_type_trans(sub_skb, dev); |
1331 | memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); | |
1332 | sub_skb->dev = dev; | |
1333 | sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ | |
1334 | //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ | |
1335 | ieee->last_rx_ps_time = jiffies; | |
8fc8598e JC |
1336 | netif_rx(sub_skb); |
1337 | } | |
1338 | } | |
1339 | kfree(rxb); | |
1340 | rxb = NULL; | |
1341 | ||
1342 | } | |
1343 | else | |
1344 | { | |
f8628a47 | 1345 | IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__); |
8fc8598e JC |
1346 | RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); |
1347 | } | |
1348 | #ifndef JOHN_NOCPY | |
1349 | dev_kfree_skb(skb); | |
1350 | #endif | |
1351 | ||
1352 | rx_exit: | |
1353 | #ifdef NOT_YET | |
1354 | if (sta) | |
1355 | hostap_handle_sta_release(sta); | |
1356 | #endif | |
1357 | return 1; | |
1358 | ||
1359 | rx_dropped: | |
e72714fb IM |
1360 | kfree(rxb); |
1361 | rxb = NULL; | |
8fc8598e JC |
1362 | stats->rx_dropped++; |
1363 | ||
1364 | /* Returning 0 indicates to caller that we have not handled the SKB-- | |
1365 | * so it is still allocated and can be used again by underlying | |
1366 | * hardware as a DMA target */ | |
1367 | return 0; | |
1368 | } | |
539b4f72 | 1369 | EXPORT_SYMBOL(ieee80211_rx); |
8fc8598e JC |
1370 | |
1371 | #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 | |
1372 | ||
1373 | static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; | |
1374 | ||
1375 | /* | |
25985edc | 1376 | * Make the structure we read from the beacon packet to have |
8fc8598e JC |
1377 | * the right values |
1378 | */ | |
1379 | static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element | |
fdc64a9e | 1380 | *info_element, int sub_type) |
8fc8598e JC |
1381 | { |
1382 | ||
fdc64a9e SH |
1383 | if (info_element->qui_subtype != sub_type) |
1384 | return -1; | |
1385 | if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) | |
1386 | return -1; | |
1387 | if (info_element->qui_type != QOS_OUI_TYPE) | |
1388 | return -1; | |
1389 | if (info_element->version != QOS_VERSION_1) | |
1390 | return -1; | |
8fc8598e | 1391 | |
fdc64a9e | 1392 | return 0; |
8fc8598e JC |
1393 | } |
1394 | ||
1395 | ||
1396 | /* | |
1397 | * Parse a QoS parameter element | |
1398 | */ | |
1399 | static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info | |
fdc64a9e SH |
1400 | *element_param, struct ieee80211_info_element |
1401 | *info_element) | |
8fc8598e | 1402 | { |
fdc64a9e SH |
1403 | int ret = 0; |
1404 | u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; | |
1405 | ||
1406 | if ((info_element == NULL) || (element_param == NULL)) | |
1407 | return -1; | |
1408 | ||
1409 | if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { | |
1410 | memcpy(element_param->info_element.qui, info_element->data, | |
1411 | info_element->len); | |
1412 | element_param->info_element.elementID = info_element->id; | |
1413 | element_param->info_element.length = info_element->len; | |
1414 | } else | |
1415 | ret = -1; | |
1416 | if (ret == 0) | |
1417 | ret = ieee80211_verify_qos_info(&element_param->info_element, | |
1418 | QOS_OUI_PARAM_SUB_TYPE); | |
1419 | return ret; | |
8fc8598e JC |
1420 | } |
1421 | ||
1422 | /* | |
1423 | * Parse a QoS information element | |
1424 | */ | |
1425 | static int ieee80211_read_qos_info_element(struct | |
fdc64a9e SH |
1426 | ieee80211_qos_information_element |
1427 | *element_info, struct ieee80211_info_element | |
1428 | *info_element) | |
8fc8598e | 1429 | { |
fdc64a9e SH |
1430 | int ret = 0; |
1431 | u16 size = sizeof(struct ieee80211_qos_information_element) - 2; | |
1432 | ||
1433 | if (element_info == NULL) | |
1434 | return -1; | |
1435 | if (info_element == NULL) | |
1436 | return -1; | |
1437 | ||
1438 | if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { | |
1439 | memcpy(element_info->qui, info_element->data, | |
1440 | info_element->len); | |
1441 | element_info->elementID = info_element->id; | |
1442 | element_info->length = info_element->len; | |
1443 | } else | |
1444 | ret = -1; | |
1445 | ||
1446 | if (ret == 0) | |
1447 | ret = ieee80211_verify_qos_info(element_info, | |
1448 | QOS_OUI_INFO_SUB_TYPE); | |
1449 | return ret; | |
8fc8598e JC |
1450 | } |
1451 | ||
1452 | ||
1453 | /* | |
1454 | * Write QoS parameters from the ac parameters. | |
1455 | */ | |
1456 | static int ieee80211_qos_convert_ac_to_parameters(struct | |
fdc64a9e SH |
1457 | ieee80211_qos_parameter_info |
1458 | *param_elm, struct | |
1459 | ieee80211_qos_parameters | |
1460 | *qos_param) | |
8fc8598e | 1461 | { |
fdc64a9e SH |
1462 | int i; |
1463 | struct ieee80211_qos_ac_parameter *ac_params; | |
8fc8598e | 1464 | u8 aci; |
fdc64a9e SH |
1465 | //u8 cw_min; |
1466 | //u8 cw_max; | |
8fc8598e | 1467 | |
fdc64a9e SH |
1468 | for (i = 0; i < QOS_QUEUE_NUM; i++) { |
1469 | ac_params = &(param_elm->ac_params_record[i]); | |
8fc8598e JC |
1470 | |
1471 | aci = (ac_params->aci_aifsn & 0x60) >> 5; | |
1472 | ||
1473 | if(aci >= QOS_QUEUE_NUM) | |
1474 | continue; | |
fdc64a9e | 1475 | qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; |
8fc8598e JC |
1476 | |
1477 | /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ | |
fdc64a9e | 1478 | qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; |
8fc8598e | 1479 | |
86d7726d JJ |
1480 | qos_param->cw_min[aci] = |
1481 | cpu_to_le16(ac_params->ecw_min_max & 0x0F); | |
8fc8598e | 1482 | |
86d7726d JJ |
1483 | qos_param->cw_max[aci] = |
1484 | cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4); | |
8fc8598e | 1485 | |
fdc64a9e SH |
1486 | qos_param->flag[aci] = |
1487 | (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; | |
86d7726d | 1488 | qos_param->tx_op_limit[aci] = ac_params->tx_op_limit; |
fdc64a9e | 1489 | } |
4764ca98 | 1490 | return 0; |
8fc8598e JC |
1491 | } |
1492 | ||
1493 | /* | |
1494 | * we have a generic data element which it may contain QoS information or | |
1495 | * parameters element. check the information element length to decide | |
1496 | * which type to read | |
1497 | */ | |
1498 | static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element | |
fdc64a9e SH |
1499 | *info_element, |
1500 | struct ieee80211_network *network) | |
8fc8598e | 1501 | { |
fdc64a9e SH |
1502 | int rc = 0; |
1503 | struct ieee80211_qos_parameters *qos_param = NULL; | |
1504 | struct ieee80211_qos_information_element qos_info_element; | |
1505 | ||
1506 | rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); | |
1507 | ||
1508 | if (rc == 0) { | |
1509 | network->qos_data.param_count = qos_info_element.ac_info & 0x0F; | |
1510 | network->flags |= NETWORK_HAS_QOS_INFORMATION; | |
1511 | } else { | |
1512 | struct ieee80211_qos_parameter_info param_element; | |
1513 | ||
1514 | rc = ieee80211_read_qos_param_element(¶m_element, | |
1515 | info_element); | |
1516 | if (rc == 0) { | |
1517 | qos_param = &(network->qos_data.parameters); | |
1518 | ieee80211_qos_convert_ac_to_parameters(¶m_element, | |
1519 | qos_param); | |
1520 | network->flags |= NETWORK_HAS_QOS_PARAMETERS; | |
1521 | network->qos_data.param_count = | |
1522 | param_element.info_element.ac_info & 0x0F; | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | if (rc == 0) { | |
1527 | IEEE80211_DEBUG_QOS("QoS is supported\n"); | |
1528 | network->qos_data.supported = 1; | |
1529 | } | |
1530 | return rc; | |
8fc8598e JC |
1531 | } |
1532 | ||
1533 | #ifdef CONFIG_IEEE80211_DEBUG | |
1534 | #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x | |
1535 | ||
1536 | static const char *get_info_element_string(u16 id) | |
1537 | { | |
fdc64a9e SH |
1538 | switch (id) { |
1539 | MFIE_STRING(SSID); | |
1540 | MFIE_STRING(RATES); | |
1541 | MFIE_STRING(FH_SET); | |
1542 | MFIE_STRING(DS_SET); | |
1543 | MFIE_STRING(CF_SET); | |
1544 | MFIE_STRING(TIM); | |
1545 | MFIE_STRING(IBSS_SET); | |
1546 | MFIE_STRING(COUNTRY); | |
1547 | MFIE_STRING(HOP_PARAMS); | |
1548 | MFIE_STRING(HOP_TABLE); | |
1549 | MFIE_STRING(REQUEST); | |
1550 | MFIE_STRING(CHALLENGE); | |
1551 | MFIE_STRING(POWER_CONSTRAINT); | |
1552 | MFIE_STRING(POWER_CAPABILITY); | |
1553 | MFIE_STRING(TPC_REQUEST); | |
1554 | MFIE_STRING(TPC_REPORT); | |
1555 | MFIE_STRING(SUPP_CHANNELS); | |
1556 | MFIE_STRING(CSA); | |
1557 | MFIE_STRING(MEASURE_REQUEST); | |
1558 | MFIE_STRING(MEASURE_REPORT); | |
1559 | MFIE_STRING(QUIET); | |
1560 | MFIE_STRING(IBSS_DFS); | |
1561 | // MFIE_STRING(ERP_INFO); | |
1562 | MFIE_STRING(RSN); | |
1563 | MFIE_STRING(RATES_EX); | |
1564 | MFIE_STRING(GENERIC); | |
1565 | MFIE_STRING(QOS_PARAMETER); | |
1566 | default: | |
1567 | return "UNKNOWN"; | |
1568 | } | |
8fc8598e JC |
1569 | } |
1570 | #endif | |
1571 | ||
8fc8598e JC |
1572 | static inline void ieee80211_extract_country_ie( |
1573 | struct ieee80211_device *ieee, | |
1574 | struct ieee80211_info_element *info_element, | |
1575 | struct ieee80211_network *network, | |
ea77527a | 1576 | u8 *addr2 |
8fc8598e JC |
1577 | ) |
1578 | { | |
dde48b99 | 1579 | if (IS_DOT11D_ENABLE(ieee)) |
8fc8598e | 1580 | { |
dde48b99 | 1581 | if (info_element->len!= 0) |
8fc8598e JC |
1582 | { |
1583 | memcpy(network->CountryIeBuf, info_element->data, info_element->len); | |
1584 | network->CountryIeLen = info_element->len; | |
1585 | ||
dde48b99 | 1586 | if (!IS_COUNTRY_IE_VALID(ieee)) |
8fc8598e JC |
1587 | { |
1588 | Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); | |
1589 | } | |
1590 | } | |
1591 | ||
1592 | // | |
1593 | // 070305, rcnjko: I update country IE watch dog here because | |
1594 | // some AP (e.g. Cisco 1242) don't include country IE in their | |
1595 | // probe response frame. | |
1596 | // | |
dde48b99 | 1597 | if (IS_EQUAL_CIE_SRC(ieee, addr2) ) |
8fc8598e JC |
1598 | { |
1599 | UPDATE_CIE_WATCHDOG(ieee); | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | } | |
8fc8598e JC |
1604 | |
1605 | int ieee80211_parse_info_param(struct ieee80211_device *ieee, | |
1606 | struct ieee80211_info_element *info_element, | |
1607 | u16 length, | |
1608 | struct ieee80211_network *network, | |
1609 | struct ieee80211_rx_stats *stats) | |
1610 | { | |
1611 | u8 i; | |
1612 | short offset; | |
fdc64a9e | 1613 | u16 tmp_htcap_len=0; |
8fc8598e JC |
1614 | u16 tmp_htinfo_len=0; |
1615 | u16 ht_realtek_agg_len=0; | |
1616 | u8 ht_realtek_agg_buf[MAX_IE_LEN]; | |
1617 | // u16 broadcom_len = 0; | |
1618 | #ifdef CONFIG_IEEE80211_DEBUG | |
1619 | char rates_str[64]; | |
1620 | char *p; | |
1621 | #endif | |
1622 | ||
1623 | while (length >= sizeof(*info_element)) { | |
1624 | if (sizeof(*info_element) + info_element->len > length) { | |
1625 | IEEE80211_DEBUG_MGMT("Info elem: parse failed: " | |
1626 | "info_element->len + 2 > left : " | |
1627 | "info_element->len+2=%zd left=%d, id=%d.\n", | |
1628 | info_element->len + | |
1629 | sizeof(*info_element), | |
1630 | length, info_element->id); | |
1631 | /* We stop processing but don't return an error here | |
1632 | * because some misbehaviour APs break this rule. ie. | |
1633 | * Orinoco AP1000. */ | |
1634 | break; | |
1635 | } | |
1636 | ||
1637 | switch (info_element->id) { | |
1638 | case MFIE_TYPE_SSID: | |
1639 | if (ieee80211_is_empty_essid(info_element->data, | |
1640 | info_element->len)) { | |
1641 | network->flags |= NETWORK_EMPTY_ESSID; | |
1642 | break; | |
1643 | } | |
1644 | ||
1645 | network->ssid_len = min(info_element->len, | |
1646 | (u8) IW_ESSID_MAX_SIZE); | |
1647 | memcpy(network->ssid, info_element->data, network->ssid_len); | |
1648 | if (network->ssid_len < IW_ESSID_MAX_SIZE) | |
1649 | memset(network->ssid + network->ssid_len, 0, | |
1650 | IW_ESSID_MAX_SIZE - network->ssid_len); | |
1651 | ||
1652 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", | |
1653 | network->ssid, network->ssid_len); | |
1654 | break; | |
1655 | ||
1656 | case MFIE_TYPE_RATES: | |
1657 | #ifdef CONFIG_IEEE80211_DEBUG | |
1658 | p = rates_str; | |
1659 | #endif | |
1660 | network->rates_len = min(info_element->len, | |
1661 | MAX_RATES_LENGTH); | |
1662 | for (i = 0; i < network->rates_len; i++) { | |
1663 | network->rates[i] = info_element->data[i]; | |
1664 | #ifdef CONFIG_IEEE80211_DEBUG | |
1665 | p += snprintf(p, sizeof(rates_str) - | |
1666 | (p - rates_str), "%02X ", | |
1667 | network->rates[i]); | |
1668 | #endif | |
1669 | if (ieee80211_is_ofdm_rate | |
1670 | (info_element->data[i])) { | |
1671 | network->flags |= NETWORK_HAS_OFDM; | |
1672 | if (info_element->data[i] & | |
1673 | IEEE80211_BASIC_RATE_MASK) | |
1674 | network->flags &= | |
1675 | ~NETWORK_HAS_CCK; | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", | |
1680 | rates_str, network->rates_len); | |
1681 | break; | |
1682 | ||
1683 | case MFIE_TYPE_RATES_EX: | |
1684 | #ifdef CONFIG_IEEE80211_DEBUG | |
1685 | p = rates_str; | |
1686 | #endif | |
1687 | network->rates_ex_len = min(info_element->len, | |
1688 | MAX_RATES_EX_LENGTH); | |
1689 | for (i = 0; i < network->rates_ex_len; i++) { | |
1690 | network->rates_ex[i] = info_element->data[i]; | |
1691 | #ifdef CONFIG_IEEE80211_DEBUG | |
1692 | p += snprintf(p, sizeof(rates_str) - | |
1693 | (p - rates_str), "%02X ", | |
c4151700 | 1694 | network->rates_ex[i]); |
8fc8598e JC |
1695 | #endif |
1696 | if (ieee80211_is_ofdm_rate | |
1697 | (info_element->data[i])) { | |
1698 | network->flags |= NETWORK_HAS_OFDM; | |
1699 | if (info_element->data[i] & | |
1700 | IEEE80211_BASIC_RATE_MASK) | |
1701 | network->flags &= | |
1702 | ~NETWORK_HAS_CCK; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", | |
1707 | rates_str, network->rates_ex_len); | |
1708 | break; | |
1709 | ||
1710 | case MFIE_TYPE_DS_SET: | |
1711 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", | |
1712 | info_element->data[0]); | |
1713 | network->channel = info_element->data[0]; | |
1714 | break; | |
1715 | ||
1716 | case MFIE_TYPE_FH_SET: | |
1717 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); | |
1718 | break; | |
1719 | ||
1720 | case MFIE_TYPE_CF_SET: | |
1721 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); | |
1722 | break; | |
1723 | ||
1724 | case MFIE_TYPE_TIM: | |
1725 | if(info_element->len < 4) | |
1726 | break; | |
1727 | ||
1728 | network->tim.tim_count = info_element->data[0]; | |
1729 | network->tim.tim_period = info_element->data[1]; | |
1730 | ||
fdc64a9e SH |
1731 | network->dtim_period = info_element->data[1]; |
1732 | if(ieee->state != IEEE80211_LINKED) | |
1733 | break; | |
8fc8598e | 1734 | |
fdc64a9e SH |
1735 | network->last_dtim_sta_time[0] = stats->mac_time[0]; |
1736 | network->last_dtim_sta_time[1] = stats->mac_time[1]; | |
8fc8598e | 1737 | |
fdc64a9e | 1738 | network->dtim_data = IEEE80211_DTIM_VALID; |
8fc8598e | 1739 | |
fdc64a9e SH |
1740 | if(info_element->data[0] != 0) |
1741 | break; | |
8fc8598e | 1742 | |
fdc64a9e SH |
1743 | if(info_element->data[2] & 1) |
1744 | network->dtim_data |= IEEE80211_DTIM_MBCAST; | |
8fc8598e | 1745 | |
fdc64a9e | 1746 | offset = (info_element->data[2] >> 1)*2; |
8fc8598e | 1747 | |
fdc64a9e SH |
1748 | if(ieee->assoc_id < 8*offset || |
1749 | ieee->assoc_id > 8*(offset + info_element->len -3)) | |
8fc8598e | 1750 | |
fdc64a9e | 1751 | break; |
8fc8598e | 1752 | |
fdc64a9e | 1753 | offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; |
8fc8598e | 1754 | |
fdc64a9e SH |
1755 | if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) |
1756 | network->dtim_data |= IEEE80211_DTIM_UCAST; | |
8fc8598e JC |
1757 | |
1758 | //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); | |
1759 | break; | |
1760 | ||
1761 | case MFIE_TYPE_ERP: | |
1762 | network->erp_value = info_element->data[0]; | |
1763 | network->flags |= NETWORK_HAS_ERP_VALUE; | |
1764 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", | |
1765 | network->erp_value); | |
1766 | break; | |
1767 | case MFIE_TYPE_IBSS_SET: | |
1768 | network->atim_window = info_element->data[0]; | |
1769 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", | |
1770 | network->atim_window); | |
1771 | break; | |
1772 | ||
1773 | case MFIE_TYPE_CHALLENGE: | |
1774 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); | |
1775 | break; | |
1776 | ||
1777 | case MFIE_TYPE_GENERIC: | |
1778 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", | |
1779 | info_element->len); | |
1780 | if (!ieee80211_parse_qos_info_param_IE(info_element, | |
1781 | network)) | |
1782 | break; | |
1783 | ||
1784 | if (info_element->len >= 4 && | |
1785 | info_element->data[0] == 0x00 && | |
1786 | info_element->data[1] == 0x50 && | |
1787 | info_element->data[2] == 0xf2 && | |
1788 | info_element->data[3] == 0x01) { | |
1789 | network->wpa_ie_len = min(info_element->len + 2, | |
1790 | MAX_WPA_IE_LEN); | |
1791 | memcpy(network->wpa_ie, info_element, | |
1792 | network->wpa_ie_len); | |
1793 | break; | |
1794 | } | |
1795 | ||
1796 | #ifdef THOMAS_TURBO | |
fdc64a9e SH |
1797 | if (info_element->len == 7 && |
1798 | info_element->data[0] == 0x00 && | |
1799 | info_element->data[1] == 0xe0 && | |
1800 | info_element->data[2] == 0x4c && | |
1801 | info_element->data[3] == 0x01 && | |
1802 | info_element->data[4] == 0x02) { | |
1803 | network->Turbo_Enable = 1; | |
1804 | } | |
8fc8598e JC |
1805 | #endif |
1806 | ||
fdc64a9e | 1807 | //for HTcap and HTinfo parameters |
8fc8598e JC |
1808 | if(tmp_htcap_len == 0){ |
1809 | if(info_element->len >= 4 && | |
1810 | info_element->data[0] == 0x00 && | |
1811 | info_element->data[1] == 0x90 && | |
1812 | info_element->data[2] == 0x4c && | |
1813 | info_element->data[3] == 0x033){ | |
1814 | ||
1815 | tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); | |
35997ff0 SH |
1816 | if(tmp_htcap_len != 0){ |
1817 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
8fc8598e JC |
1818 | network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ |
1819 | sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; | |
1820 | memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); | |
35997ff0 | 1821 | } |
8fc8598e JC |
1822 | } |
1823 | if(tmp_htcap_len != 0) | |
1824 | network->bssht.bdSupportHT = true; | |
1825 | else | |
1826 | network->bssht.bdSupportHT = false; | |
1827 | } | |
1828 | ||
1829 | ||
1830 | if(tmp_htinfo_len == 0){ | |
1831 | if(info_element->len >= 4 && | |
1832 | info_element->data[0] == 0x00 && | |
35997ff0 SH |
1833 | info_element->data[1] == 0x90 && |
1834 | info_element->data[2] == 0x4c && | |
1835 | info_element->data[3] == 0x034){ | |
8fc8598e JC |
1836 | |
1837 | tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1838 | if(tmp_htinfo_len != 0){ | |
1839 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
1840 | if(tmp_htinfo_len){ | |
1841 | network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ | |
1842 | sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; | |
1843 | memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); | |
1844 | } | |
1845 | ||
1846 | } | |
1847 | ||
1848 | } | |
1849 | } | |
1850 | ||
1851 | if(ieee->aggregation){ | |
1852 | if(network->bssht.bdSupportHT){ | |
1853 | if(info_element->len >= 4 && | |
1854 | info_element->data[0] == 0x00 && | |
1855 | info_element->data[1] == 0xe0 && | |
1856 | info_element->data[2] == 0x4c && | |
1857 | info_element->data[3] == 0x02){ | |
1858 | ||
1859 | ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1860 | memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); | |
1861 | ||
1862 | } | |
1863 | if(ht_realtek_agg_len >= 5){ | |
1864 | network->bssht.bdRT2RTAggregation = true; | |
1865 | ||
1866 | if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) | |
1867 | network->bssht.bdRT2RTLongSlotTime = true; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | } | |
1872 | ||
1873 | //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) | |
1874 | { | |
dde48b99 | 1875 | if ((info_element->len >= 3 && |
8fc8598e JC |
1876 | info_element->data[0] == 0x00 && |
1877 | info_element->data[1] == 0x05 && | |
1878 | info_element->data[2] == 0xb5) || | |
1879 | (info_element->len >= 3 && | |
1880 | info_element->data[0] == 0x00 && | |
1881 | info_element->data[1] == 0x0a && | |
1882 | info_element->data[2] == 0xf7) || | |
1883 | (info_element->len >= 3 && | |
1884 | info_element->data[0] == 0x00 && | |
1885 | info_element->data[1] == 0x10 && | |
1886 | info_element->data[2] == 0x18)){ | |
1887 | ||
1888 | network->broadcom_cap_exist = true; | |
1889 | ||
1890 | } | |
1891 | } | |
8fc8598e JC |
1892 | if(info_element->len >= 3 && |
1893 | info_element->data[0] == 0x00 && | |
1894 | info_element->data[1] == 0x0c && | |
1895 | info_element->data[2] == 0x43) | |
1896 | { | |
1897 | network->ralink_cap_exist = true; | |
1898 | } | |
1899 | else | |
1900 | network->ralink_cap_exist = false; | |
1901 | //added by amy for atheros AP | |
1902 | if((info_element->len >= 3 && | |
1903 | info_element->data[0] == 0x00 && | |
1904 | info_element->data[1] == 0x03 && | |
1905 | info_element->data[2] == 0x7f) || | |
1906 | (info_element->len >= 3 && | |
1907 | info_element->data[0] == 0x00 && | |
1908 | info_element->data[1] == 0x13 && | |
1909 | info_element->data[2] == 0x74)) | |
1910 | { | |
f8628a47 | 1911 | printk("========>%s(): athros AP is exist\n",__func__); |
8fc8598e JC |
1912 | network->atheros_cap_exist = true; |
1913 | } | |
1914 | else | |
1915 | network->atheros_cap_exist = false; | |
1916 | ||
1917 | if(info_element->len >= 3 && | |
1918 | info_element->data[0] == 0x00 && | |
1919 | info_element->data[1] == 0x40 && | |
1920 | info_element->data[2] == 0x96) | |
1921 | { | |
1922 | network->cisco_cap_exist = true; | |
1923 | } | |
1924 | else | |
1925 | network->cisco_cap_exist = false; | |
1926 | //added by amy for LEAP of cisco | |
dde48b99 | 1927 | if (info_element->len > 4 && |
8fc8598e JC |
1928 | info_element->data[0] == 0x00 && |
1929 | info_element->data[1] == 0x40 && | |
1930 | info_element->data[2] == 0x96 && | |
1931 | info_element->data[3] == 0x01) | |
1932 | { | |
1933 | if(info_element->len == 6) | |
1934 | { | |
1935 | memcpy(network->CcxRmState, &info_element[4], 2); | |
1936 | if(network->CcxRmState[0] != 0) | |
1937 | { | |
1938 | network->bCcxRmEnable = true; | |
1939 | } | |
1940 | else | |
1941 | network->bCcxRmEnable = false; | |
1942 | // | |
1943 | // CCXv4 Table 59-1 MBSSID Masks. | |
1944 | // | |
1945 | network->MBssidMask = network->CcxRmState[1] & 0x07; | |
1946 | if(network->MBssidMask != 0) | |
1947 | { | |
1948 | network->bMBssidValid = true; | |
1949 | network->MBssidMask = 0xff << (network->MBssidMask); | |
1950 | cpMacAddr(network->MBssid, network->bssid); | |
1951 | network->MBssid[5] &= network->MBssidMask; | |
1952 | } | |
1953 | else | |
1954 | { | |
1955 | network->bMBssidValid = false; | |
1956 | } | |
1957 | } | |
1958 | else | |
1959 | { | |
1960 | network->bCcxRmEnable = false; | |
1961 | } | |
1962 | } | |
dde48b99 | 1963 | if (info_element->len > 4 && |
8fc8598e JC |
1964 | info_element->data[0] == 0x00 && |
1965 | info_element->data[1] == 0x40 && | |
1966 | info_element->data[2] == 0x96 && | |
1967 | info_element->data[3] == 0x03) | |
1968 | { | |
1969 | if(info_element->len == 5) | |
1970 | { | |
1971 | network->bWithCcxVerNum = true; | |
1972 | network->BssCcxVerNumber = info_element->data[4]; | |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | network->bWithCcxVerNum = false; | |
1977 | network->BssCcxVerNumber = 0; | |
1978 | } | |
1979 | } | |
1980 | break; | |
1981 | ||
1982 | case MFIE_TYPE_RSN: | |
1983 | IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", | |
1984 | info_element->len); | |
1985 | network->rsn_ie_len = min(info_element->len + 2, | |
1986 | MAX_WPA_IE_LEN); | |
1987 | memcpy(network->rsn_ie, info_element, | |
1988 | network->rsn_ie_len); | |
1989 | break; | |
1990 | ||
fdc64a9e | 1991 | //HT related element. |
8fc8598e JC |
1992 | case MFIE_TYPE_HT_CAP: |
1993 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", | |
1994 | info_element->len); | |
1995 | tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); | |
1996 | if(tmp_htcap_len != 0){ | |
1997 | network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; | |
1998 | network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ | |
1999 | sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; | |
2000 | memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); | |
2001 | ||
2002 | //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() | |
2003 | // windows driver will update WMM parameters each beacon received once connected | |
fdc64a9e | 2004 | // Linux driver is a bit different. |
8fc8598e JC |
2005 | network->bssht.bdSupportHT = true; |
2006 | } | |
2007 | else | |
2008 | network->bssht.bdSupportHT = false; | |
2009 | break; | |
2010 | ||
2011 | ||
2012 | case MFIE_TYPE_HT_INFO: | |
2013 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", | |
2014 | info_element->len); | |
2015 | tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); | |
2016 | if(tmp_htinfo_len){ | |
2017 | network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; | |
2018 | network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ | |
2019 | sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; | |
2020 | memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); | |
2021 | } | |
2022 | break; | |
2023 | ||
2024 | case MFIE_TYPE_AIRONET: | |
2025 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", | |
2026 | info_element->len); | |
2027 | if(info_element->len >IE_CISCO_FLAG_POSITION) | |
2028 | { | |
2029 | network->bWithAironetIE = true; | |
2030 | ||
2031 | // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): | |
2032 | // "A Cisco access point advertises support for CKIP in beacon and probe response packets, | |
2033 | // by adding an Aironet element and setting one or both of the CKIP negotiation bits." | |
2034 | if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || | |
2035 | (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) | |
2036 | { | |
35997ff0 | 2037 | network->bCkipSupported = true; |
8fc8598e JC |
2038 | } |
2039 | else | |
2040 | { | |
2041 | network->bCkipSupported = false; | |
2042 | } | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | network->bWithAironetIE = false; | |
35997ff0 | 2047 | network->bCkipSupported = false; |
8fc8598e JC |
2048 | } |
2049 | break; | |
2050 | case MFIE_TYPE_QOS_PARAMETER: | |
2051 | printk(KERN_ERR | |
2052 | "QoS Error need to parse QOS_PARAMETER IE\n"); | |
2053 | break; | |
2054 | ||
8fc8598e JC |
2055 | case MFIE_TYPE_COUNTRY: |
2056 | IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", | |
2057 | info_element->len); | |
8fc8598e JC |
2058 | ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP |
2059 | break; | |
8fc8598e | 2060 | /* TODO */ |
8fc8598e JC |
2061 | default: |
2062 | IEEE80211_DEBUG_MGMT | |
2063 | ("Unsupported info element: %s (%d)\n", | |
2064 | get_info_element_string(info_element->id), | |
2065 | info_element->id); | |
2066 | break; | |
2067 | } | |
2068 | ||
2069 | length -= sizeof(*info_element) + info_element->len; | |
2070 | info_element = | |
2071 | (struct ieee80211_info_element *)&info_element-> | |
2072 | data[info_element->len]; | |
2073 | } | |
2074 | ||
2075 | if(!network->atheros_cap_exist && !network->broadcom_cap_exist && | |
2076 | !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) | |
2077 | { | |
2078 | network->unknown_cap_exist = true; | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | network->unknown_cap_exist = false; | |
2083 | } | |
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | static inline u8 ieee80211_SignalStrengthTranslate( | |
2088 | u8 CurrSS | |
2089 | ) | |
2090 | { | |
2091 | u8 RetSS; | |
2092 | ||
2093 | // Step 1. Scale mapping. | |
2094 | if(CurrSS >= 71 && CurrSS <= 100) | |
2095 | { | |
2096 | RetSS = 90 + ((CurrSS - 70) / 3); | |
2097 | } | |
2098 | else if(CurrSS >= 41 && CurrSS <= 70) | |
2099 | { | |
2100 | RetSS = 78 + ((CurrSS - 40) / 3); | |
2101 | } | |
2102 | else if(CurrSS >= 31 && CurrSS <= 40) | |
2103 | { | |
2104 | RetSS = 66 + (CurrSS - 30); | |
2105 | } | |
2106 | else if(CurrSS >= 21 && CurrSS <= 30) | |
2107 | { | |
2108 | RetSS = 54 + (CurrSS - 20); | |
2109 | } | |
2110 | else if(CurrSS >= 5 && CurrSS <= 20) | |
2111 | { | |
2112 | RetSS = 42 + (((CurrSS - 5) * 2) / 3); | |
2113 | } | |
2114 | else if(CurrSS == 4) | |
2115 | { | |
2116 | RetSS = 36; | |
2117 | } | |
2118 | else if(CurrSS == 3) | |
2119 | { | |
2120 | RetSS = 27; | |
2121 | } | |
2122 | else if(CurrSS == 2) | |
2123 | { | |
2124 | RetSS = 18; | |
2125 | } | |
2126 | else if(CurrSS == 1) | |
2127 | { | |
2128 | RetSS = 9; | |
2129 | } | |
2130 | else | |
2131 | { | |
2132 | RetSS = CurrSS; | |
2133 | } | |
2134 | //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); | |
2135 | ||
2136 | // Step 2. Smoothing. | |
2137 | ||
2138 | //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); | |
2139 | ||
2140 | return RetSS; | |
2141 | } | |
2142 | ||
57a88529 TB |
2143 | /* 0-100 index */ |
2144 | static long ieee80211_translate_todbm(u8 signal_strength_index) | |
8fc8598e JC |
2145 | { |
2146 | long signal_power; // in dBm. | |
2147 | ||
2148 | // Translate to dBm (x=0.5y-95). | |
2149 | signal_power = (long)((signal_strength_index + 1) >> 1); | |
2150 | signal_power -= 95; | |
2151 | ||
2152 | return signal_power; | |
2153 | } | |
2154 | ||
2155 | static inline int ieee80211_network_init( | |
2156 | struct ieee80211_device *ieee, | |
2157 | struct ieee80211_probe_response *beacon, | |
2158 | struct ieee80211_network *network, | |
2159 | struct ieee80211_rx_stats *stats) | |
2160 | { | |
2161 | #ifdef CONFIG_IEEE80211_DEBUG | |
2162 | //char rates_str[64]; | |
2163 | //char *p; | |
2164 | #endif | |
2165 | ||
fdc64a9e SH |
2166 | network->qos_data.active = 0; |
2167 | network->qos_data.supported = 0; | |
2168 | network->qos_data.param_count = 0; | |
2169 | network->qos_data.old_param_count = 0; | |
8fc8598e JC |
2170 | |
2171 | /* Pull out fixed field data */ | |
2172 | memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); | |
2173 | network->capability = le16_to_cpu(beacon->capability); | |
2174 | network->last_scanned = jiffies; | |
2175 | network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); | |
2176 | network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); | |
1a324441 | 2177 | network->beacon_interval = le16_to_cpu(beacon->beacon_interval); |
8fc8598e JC |
2178 | /* Where to pull this? beacon->listen_interval;*/ |
2179 | network->listen_interval = 0x0A; | |
2180 | network->rates_len = network->rates_ex_len = 0; | |
2181 | network->last_associate = 0; | |
2182 | network->ssid_len = 0; | |
2183 | network->flags = 0; | |
2184 | network->atim_window = 0; | |
2185 | network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? | |
fdc64a9e | 2186 | 0x3 : 0x0; |
8fc8598e | 2187 | network->berp_info_valid = false; |
fdc64a9e | 2188 | network->broadcom_cap_exist = false; |
8fc8598e JC |
2189 | network->ralink_cap_exist = false; |
2190 | network->atheros_cap_exist = false; | |
2191 | network->cisco_cap_exist = false; | |
2192 | network->unknown_cap_exist = false; | |
2193 | #ifdef THOMAS_TURBO | |
2194 | network->Turbo_Enable = 0; | |
2195 | #endif | |
8fc8598e JC |
2196 | network->CountryIeLen = 0; |
2197 | memset(network->CountryIeBuf, 0, MAX_IE_LEN); | |
8fc8598e JC |
2198 | //Initialize HT parameters |
2199 | //ieee80211_ht_initialize(&network->bssht); | |
2200 | HTInitializeBssDesc(&network->bssht); | |
2201 | if (stats->freq == IEEE80211_52GHZ_BAND) { | |
2202 | /* for A band (No DS info) */ | |
2203 | network->channel = stats->received_channel; | |
2204 | } else | |
2205 | network->flags |= NETWORK_HAS_CCK; | |
2206 | ||
35997ff0 SH |
2207 | network->wpa_ie_len = 0; |
2208 | network->rsn_ie_len = 0; | |
8fc8598e | 2209 | |
fdc64a9e SH |
2210 | if (ieee80211_parse_info_param |
2211 | (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) | |
2212 | return 1; | |
8fc8598e JC |
2213 | |
2214 | network->mode = 0; | |
2215 | if (stats->freq == IEEE80211_52GHZ_BAND) | |
2216 | network->mode = IEEE_A; | |
2217 | else { | |
2218 | if (network->flags & NETWORK_HAS_OFDM) | |
2219 | network->mode |= IEEE_G; | |
2220 | if (network->flags & NETWORK_HAS_CCK) | |
2221 | network->mode |= IEEE_B; | |
2222 | } | |
2223 | ||
2224 | if (network->mode == 0) { | |
0ee9f67c | 2225 | IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' " |
8fc8598e JC |
2226 | "network.\n", |
2227 | escape_essid(network->ssid, | |
2228 | network->ssid_len), | |
0ee9f67c | 2229 | network->bssid); |
8fc8598e JC |
2230 | return 1; |
2231 | } | |
2232 | ||
2233 | if(network->bssht.bdSupportHT){ | |
2234 | if(network->mode == IEEE_A) | |
2235 | network->mode = IEEE_N_5G; | |
2236 | else if(network->mode & (IEEE_G | IEEE_B)) | |
2237 | network->mode = IEEE_N_24G; | |
2238 | } | |
2239 | if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) | |
2240 | network->flags |= NETWORK_EMPTY_ESSID; | |
2241 | ||
8fc8598e JC |
2242 | stats->signal = 30 + (stats->SignalStrength * 70) / 100; |
2243 | //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); | |
2244 | stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; | |
8fc8598e JC |
2245 | |
2246 | memcpy(&network->stats, stats, sizeof(network->stats)); | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | static inline int is_same_network(struct ieee80211_network *src, | |
ea77527a | 2252 | struct ieee80211_network *dst, struct ieee80211_device *ieee) |
8fc8598e JC |
2253 | { |
2254 | /* A network is only a duplicate if the channel, BSSID, ESSID | |
2255 | * and the capability field (in particular IBSS and BSS) all match. | |
2256 | * We treat all <hidden> with the same BSSID and channel | |
2257 | * as one network */ | |
2258 | return //((src->ssid_len == dst->ssid_len) && | |
2259 | (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && | |
2260 | (src->channel == dst->channel) && | |
2261 | !memcmp(src->bssid, dst->bssid, ETH_ALEN) && | |
2262 | //!memcmp(src->ssid, dst->ssid, src->ssid_len) && | |
2263 | (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && | |
2264 | ((src->capability & WLAN_CAPABILITY_IBSS) == | |
2265 | (dst->capability & WLAN_CAPABILITY_IBSS)) && | |
2266 | ((src->capability & WLAN_CAPABILITY_BSS) == | |
2267 | (dst->capability & WLAN_CAPABILITY_BSS))); | |
2268 | } | |
2269 | ||
2270 | static inline void update_network(struct ieee80211_network *dst, | |
2271 | struct ieee80211_network *src) | |
2272 | { | |
2273 | int qos_active; | |
2274 | u8 old_param; | |
2275 | ||
2276 | memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); | |
2277 | dst->capability = src->capability; | |
2278 | memcpy(dst->rates, src->rates, src->rates_len); | |
2279 | dst->rates_len = src->rates_len; | |
2280 | memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); | |
2281 | dst->rates_ex_len = src->rates_ex_len; | |
dde48b99 | 2282 | if (src->ssid_len > 0) |
8fc8598e JC |
2283 | { |
2284 | memset(dst->ssid, 0, dst->ssid_len); | |
2285 | dst->ssid_len = src->ssid_len; | |
2286 | memcpy(dst->ssid, src->ssid, src->ssid_len); | |
2287 | } | |
2288 | dst->mode = src->mode; | |
2289 | dst->flags = src->flags; | |
2290 | dst->time_stamp[0] = src->time_stamp[0]; | |
2291 | dst->time_stamp[1] = src->time_stamp[1]; | |
2292 | if (src->flags & NETWORK_HAS_ERP_VALUE) | |
2293 | { | |
2294 | dst->erp_value = src->erp_value; | |
2295 | dst->berp_info_valid = src->berp_info_valid = true; | |
2296 | } | |
2297 | dst->beacon_interval = src->beacon_interval; | |
2298 | dst->listen_interval = src->listen_interval; | |
2299 | dst->atim_window = src->atim_window; | |
2300 | dst->dtim_period = src->dtim_period; | |
2301 | dst->dtim_data = src->dtim_data; | |
2302 | dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; | |
2303 | dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; | |
2304 | memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); | |
2305 | ||
fdc64a9e | 2306 | dst->bssht.bdSupportHT = src->bssht.bdSupportHT; |
8fc8598e JC |
2307 | dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; |
2308 | dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; | |
2309 | memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); | |
2310 | dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; | |
2311 | memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); | |
2312 | dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; | |
2313 | dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; | |
2314 | dst->broadcom_cap_exist = src->broadcom_cap_exist; | |
2315 | dst->ralink_cap_exist = src->ralink_cap_exist; | |
2316 | dst->atheros_cap_exist = src->atheros_cap_exist; | |
2317 | dst->cisco_cap_exist = src->cisco_cap_exist; | |
2318 | dst->unknown_cap_exist = src->unknown_cap_exist; | |
2319 | memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); | |
2320 | dst->wpa_ie_len = src->wpa_ie_len; | |
2321 | memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); | |
2322 | dst->rsn_ie_len = src->rsn_ie_len; | |
2323 | ||
2324 | dst->last_scanned = jiffies; | |
2325 | /* qos related parameters */ | |
2326 | //qos_active = src->qos_data.active; | |
2327 | qos_active = dst->qos_data.active; | |
2328 | //old_param = dst->qos_data.old_param_count; | |
2329 | old_param = dst->qos_data.param_count; | |
2330 | if(dst->flags & NETWORK_HAS_QOS_MASK) | |
2331 | memcpy(&dst->qos_data, &src->qos_data, | |
2332 | sizeof(struct ieee80211_qos_data)); | |
2333 | else { | |
2334 | dst->qos_data.supported = src->qos_data.supported; | |
2335 | dst->qos_data.param_count = src->qos_data.param_count; | |
2336 | } | |
2337 | ||
dde48b99 | 2338 | if (dst->qos_data.supported == 1) { |
8fc8598e JC |
2339 | dst->QoS_Enable = 1; |
2340 | if(dst->ssid_len) | |
2341 | IEEE80211_DEBUG_QOS | |
2342 | ("QoS the network %s is QoS supported\n", | |
2343 | dst->ssid); | |
2344 | else | |
2345 | IEEE80211_DEBUG_QOS | |
2346 | ("QoS the network is QoS supported\n"); | |
2347 | } | |
2348 | dst->qos_data.active = qos_active; | |
2349 | dst->qos_data.old_param_count = old_param; | |
2350 | ||
2351 | /* dst->last_associate is not overwritten */ | |
8fc8598e | 2352 | dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. |
7c6e3f24 PG |
2353 | if (src->wmm_param[0].aci_aifsn|| \ |
2354 | src->wmm_param[1].aci_aifsn|| \ | |
2355 | src->wmm_param[2].aci_aifsn|| \ | |
2356 | src->wmm_param[3].aci_aifsn) { | |
8fc8598e JC |
2357 | memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); |
2358 | } | |
2359 | //dst->QoS_Enable = src->QoS_Enable; | |
8fc8598e JC |
2360 | #ifdef THOMAS_TURBO |
2361 | dst->Turbo_Enable = src->Turbo_Enable; | |
2362 | #endif | |
2363 | ||
8fc8598e JC |
2364 | dst->CountryIeLen = src->CountryIeLen; |
2365 | memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); | |
8fc8598e JC |
2366 | |
2367 | //added by amy for LEAP | |
2368 | dst->bWithAironetIE = src->bWithAironetIE; | |
2369 | dst->bCkipSupported = src->bCkipSupported; | |
0b4ef0a6 | 2370 | memcpy(dst->CcxRmState, src->CcxRmState, 2); |
8fc8598e JC |
2371 | dst->bCcxRmEnable = src->bCcxRmEnable; |
2372 | dst->MBssidMask = src->MBssidMask; | |
2373 | dst->bMBssidValid = src->bMBssidValid; | |
0b4ef0a6 | 2374 | memcpy(dst->MBssid, src->MBssid, 6); |
8fc8598e JC |
2375 | dst->bWithCcxVerNum = src->bWithCcxVerNum; |
2376 | dst->BssCcxVerNumber = src->BssCcxVerNumber; | |
2377 | ||
2378 | } | |
2379 | ||
2380 | static inline int is_beacon(__le16 fc) | |
2381 | { | |
2382 | return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); | |
2383 | } | |
2384 | ||
2385 | static inline void ieee80211_process_probe_response( | |
2386 | struct ieee80211_device *ieee, | |
2387 | struct ieee80211_probe_response *beacon, | |
2388 | struct ieee80211_rx_stats *stats) | |
2389 | { | |
2390 | struct ieee80211_network network; | |
2391 | struct ieee80211_network *target; | |
2392 | struct ieee80211_network *oldest = NULL; | |
2393 | #ifdef CONFIG_IEEE80211_DEBUG | |
2394 | struct ieee80211_info_element *info_element = &beacon->info_element[0]; | |
2395 | #endif | |
2f55aa54 | 2396 | int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl)); |
8fc8598e JC |
2397 | unsigned long flags; |
2398 | short renew; | |
2f55aa54 | 2399 | u16 capability; |
8fc8598e JC |
2400 | //u8 wmm_info; |
2401 | ||
2402 | memset(&network, 0, sizeof(struct ieee80211_network)); | |
2f55aa54 | 2403 | capability = le16_to_cpu(beacon->capability); |
8fc8598e | 2404 | IEEE80211_DEBUG_SCAN( |
0ee9f67c | 2405 | "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", |
8fc8598e | 2406 | escape_essid(info_element->data, info_element->len), |
0ee9f67c | 2407 | beacon->header.addr3, |
2f55aa54 SH |
2408 | (capability & (1 << 0xf)) ? '1' : '0', |
2409 | (capability & (1 << 0xe)) ? '1' : '0', | |
2410 | (capability & (1 << 0xd)) ? '1' : '0', | |
2411 | (capability & (1 << 0xc)) ? '1' : '0', | |
2412 | (capability & (1 << 0xb)) ? '1' : '0', | |
2413 | (capability & (1 << 0xa)) ? '1' : '0', | |
2414 | (capability & (1 << 0x9)) ? '1' : '0', | |
2415 | (capability & (1 << 0x8)) ? '1' : '0', | |
2416 | (capability & (1 << 0x7)) ? '1' : '0', | |
2417 | (capability & (1 << 0x6)) ? '1' : '0', | |
2418 | (capability & (1 << 0x5)) ? '1' : '0', | |
2419 | (capability & (1 << 0x4)) ? '1' : '0', | |
2420 | (capability & (1 << 0x3)) ? '1' : '0', | |
2421 | (capability & (1 << 0x2)) ? '1' : '0', | |
2422 | (capability & (1 << 0x1)) ? '1' : '0', | |
2423 | (capability & (1 << 0x0)) ? '1' : '0'); | |
8fc8598e JC |
2424 | |
2425 | if (ieee80211_network_init(ieee, beacon, &network, stats)) { | |
0ee9f67c | 2426 | IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n", |
8fc8598e JC |
2427 | escape_essid(info_element->data, |
2428 | info_element->len), | |
0ee9f67c | 2429 | beacon->header.addr3, |
2f55aa54 | 2430 | fc == IEEE80211_STYPE_PROBE_RESP ? |
8fc8598e JC |
2431 | "PROBE RESPONSE" : "BEACON"); |
2432 | return; | |
2433 | } | |
2434 | ||
8fc8598e JC |
2435 | // For Asus EeePc request, |
2436 | // (1) if wireless adapter receive get any 802.11d country code in AP beacon, | |
2437 | // wireless adapter should follow the country code. | |
2438 | // (2) If there is no any country code in beacon, | |
2439 | // then wireless adapter should do active scan from ch1~11 and | |
2440 | // passive scan from ch12~14 | |
2441 | ||
d59d6f5d | 2442 | if (!IsLegalChannel(ieee, network.channel)) |
8fc8598e | 2443 | return; |
dde48b99 | 2444 | if (ieee->bGlobalDomain) |
8fc8598e | 2445 | { |
2f55aa54 | 2446 | if (fc == IEEE80211_STYPE_PROBE_RESP) |
8fc8598e JC |
2447 | { |
2448 | // Case 1: Country code | |
2449 | if(IS_COUNTRY_IE_VALID(ieee) ) | |
2450 | { | |
d59d6f5d | 2451 | if (!IsLegalChannel(ieee, network.channel)) { |
8fc8598e JC |
2452 | printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); |
2453 | return; | |
2454 | } | |
2455 | } | |
2456 | // Case 2: No any country code. | |
2457 | else | |
2458 | { | |
2459 | // Filter over channel ch12~14 | |
dde48b99 | 2460 | if (network.channel > 11) |
8fc8598e JC |
2461 | { |
2462 | printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); | |
2463 | return; | |
2464 | } | |
2465 | } | |
2466 | } | |
2467 | else | |
2468 | { | |
2469 | // Case 1: Country code | |
2470 | if(IS_COUNTRY_IE_VALID(ieee) ) | |
2471 | { | |
d59d6f5d | 2472 | if (!IsLegalChannel(ieee, network.channel)) { |
8fc8598e JC |
2473 | printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); |
2474 | return; | |
2475 | } | |
2476 | } | |
2477 | // Case 2: No any country code. | |
2478 | else | |
2479 | { | |
2480 | // Filter over channel ch12~14 | |
dde48b99 | 2481 | if (network.channel > 14) |
8fc8598e JC |
2482 | { |
2483 | printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); | |
2484 | return; | |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | } | |
8fc8598e JC |
2489 | |
2490 | /* The network parsed correctly -- so now we scan our known networks | |
2491 | * to see if we can find it in our list. | |
2492 | * | |
2493 | * NOTE: This search is definitely not optimized. Once its doing | |
2494 | * the "right thing" we'll optimize it for efficiency if | |
2495 | * necessary */ | |
2496 | ||
2497 | /* Search for this entry in the list and update it if it is | |
2498 | * already there. */ | |
2499 | ||
2500 | spin_lock_irqsave(&ieee->lock, flags); | |
2501 | ||
dde48b99 | 2502 | if (is_same_network(&ieee->current_network, &network, ieee)) { |
8fc8598e | 2503 | update_network(&ieee->current_network, &network); |
dde48b99 | 2504 | if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) |
8fc8598e JC |
2505 | && ieee->current_network.berp_info_valid){ |
2506 | if(ieee->current_network.erp_value& ERP_UseProtection) | |
2507 | ieee->current_network.buseprotection = true; | |
2508 | else | |
2509 | ieee->current_network.buseprotection = false; | |
2510 | } | |
2511 | if(is_beacon(beacon->header.frame_ctl)) | |
2512 | { | |
2513 | if(ieee->state == IEEE80211_LINKED) | |
2514 | ieee->LinkDetectInfo.NumRecvBcnInPeriod++; | |
2515 | } | |
2516 | else //hidden AP | |
2517 | network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); | |
2518 | } | |
2519 | ||
2520 | list_for_each_entry(target, &ieee->network_list, list) { | |
2521 | if (is_same_network(target, &network, ieee)) | |
2522 | break; | |
2523 | if ((oldest == NULL) || | |
2524 | (target->last_scanned < oldest->last_scanned)) | |
2525 | oldest = target; | |
2526 | } | |
2527 | ||
2528 | /* If we didn't find a match, then get a new network slot to initialize | |
2529 | * with this beacon's information */ | |
2530 | if (&target->list == &ieee->network_list) { | |
2531 | if (list_empty(&ieee->network_free_list)) { | |
2532 | /* If there are no more slots, expire the oldest */ | |
2533 | list_del(&oldest->list); | |
2534 | target = oldest; | |
0ee9f67c | 2535 | IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from " |
8fc8598e JC |
2536 | "network list.\n", |
2537 | escape_essid(target->ssid, | |
2538 | target->ssid_len), | |
0ee9f67c | 2539 | target->bssid); |
8fc8598e JC |
2540 | } else { |
2541 | /* Otherwise just pull from the free list */ | |
2542 | target = list_entry(ieee->network_free_list.next, | |
2543 | struct ieee80211_network, list); | |
2544 | list_del(ieee->network_free_list.next); | |
2545 | } | |
2546 | ||
2547 | ||
2548 | #ifdef CONFIG_IEEE80211_DEBUG | |
0ee9f67c | 2549 | IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n", |
8fc8598e JC |
2550 | escape_essid(network.ssid, |
2551 | network.ssid_len), | |
0ee9f67c | 2552 | network.bssid, |
2f55aa54 | 2553 | fc == IEEE80211_STYPE_PROBE_RESP ? |
8fc8598e JC |
2554 | "PROBE RESPONSE" : "BEACON"); |
2555 | #endif | |
2556 | memcpy(target, &network, sizeof(*target)); | |
2557 | list_add_tail(&target->list, &ieee->network_list); | |
2558 | if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) | |
2559 | ieee80211_softmac_new_net(ieee,&network); | |
2560 | } else { | |
0ee9f67c | 2561 | IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n", |
8fc8598e JC |
2562 | escape_essid(target->ssid, |
2563 | target->ssid_len), | |
0ee9f67c | 2564 | target->bssid, |
2f55aa54 | 2565 | fc == IEEE80211_STYPE_PROBE_RESP ? |
8fc8598e JC |
2566 | "PROBE RESPONSE" : "BEACON"); |
2567 | ||
2568 | /* we have an entry and we are going to update it. But this entry may | |
2569 | * be already expired. In this case we do the same as we found a new | |
2570 | * net and call the new_net handler | |
2571 | */ | |
2572 | renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); | |
2573 | //YJ,add,080819,for hidden ap | |
2574 | if(is_beacon(beacon->header.frame_ctl) == 0) | |
2575 | network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); | |
2576 | //if(strncmp(network.ssid, "linksys-c",9) == 0) | |
2577 | // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); | |
2578 | if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ | |
2579 | && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ | |
2580 | ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) | |
2581 | renew = 1; | |
2582 | //YJ,add,080819,for hidden ap,end | |
2583 | ||
2584 | update_network(target, &network); | |
2585 | if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) | |
2586 | ieee80211_softmac_new_net(ieee,&network); | |
2587 | } | |
2588 | ||
2589 | spin_unlock_irqrestore(&ieee->lock, flags); | |
2590 | if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ | |
2591 | (ieee->state == IEEE80211_LINKED)) { | |
dde48b99 | 2592 | if (ieee->handle_beacon != NULL) { |
8fc8598e JC |
2593 | ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); |
2594 | } | |
2595 | } | |
2596 | } | |
2597 | ||
2598 | void ieee80211_rx_mgt(struct ieee80211_device *ieee, | |
5c2918a5 | 2599 | struct rtl_80211_hdr_4addr *header, |
8fc8598e JC |
2600 | struct ieee80211_rx_stats *stats) |
2601 | { | |
2f55aa54 | 2602 | switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) { |
8fc8598e JC |
2603 | |
2604 | case IEEE80211_STYPE_BEACON: | |
2605 | IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", | |
2f55aa54 | 2606 | WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))); |
8fc8598e JC |
2607 | IEEE80211_DEBUG_SCAN("Beacon\n"); |
2608 | ieee80211_process_probe_response( | |
2609 | ieee, (struct ieee80211_probe_response *)header, stats); | |
2610 | break; | |
2611 | ||
2612 | case IEEE80211_STYPE_PROBE_RESP: | |
2613 | IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", | |
2f55aa54 | 2614 | WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))); |
8fc8598e JC |
2615 | IEEE80211_DEBUG_SCAN("Probe response\n"); |
2616 | ieee80211_process_probe_response( | |
2617 | ieee, (struct ieee80211_probe_response *)header, stats); | |
2618 | break; | |
2619 | ||
2620 | } | |
2621 | } | |
8fc8598e | 2622 | EXPORT_SYMBOL(ieee80211_rx_mgt); |