ieee80211_rx.c revision e72714fb20b2bac88e6bc06401a124243791ca08
1/* 2 * Original code based Host AP (software wireless LAN access point) driver 3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines 4 * 5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen 6 * <jkmaline@cc.hut.fi> 7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> 8 * Copyright (c) 2004, Intel Corporation 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. See README and COPYING for 13 * more details. 14 ****************************************************************************** 15 16 Few modifications for Realtek's Wi-Fi drivers by 17 Andrea Merello <andreamrl@tiscali.it> 18 19 A special thanks goes to Realtek for their support ! 20 21******************************************************************************/ 22 23 24#include <linux/compiler.h> 25//#include <linux/config.h> 26#include <linux/errno.h> 27#include <linux/if_arp.h> 28#include <linux/in6.h> 29#include <linux/in.h> 30#include <linux/ip.h> 31#include <linux/kernel.h> 32#include <linux/module.h> 33#include <linux/netdevice.h> 34#include <linux/pci.h> 35#include <linux/proc_fs.h> 36#include <linux/skbuff.h> 37#include <linux/slab.h> 38#include <linux/tcp.h> 39#include <linux/types.h> 40#include <linux/version.h> 41#include <linux/wireless.h> 42#include <linux/etherdevice.h> 43#include <asm/uaccess.h> 44#include <linux/ctype.h> 45 46#include "ieee80211.h" 47#include "dot11d.h" 48static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, 49 struct sk_buff *skb, 50 struct ieee80211_rx_stats *rx_stats) 51{ 52 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data; 53 u16 fc = le16_to_cpu(hdr->frame_ctl); 54 55 skb->dev = ieee->dev; 56 skb_reset_mac_header(skb); 57 58 skb_pull(skb, ieee80211_get_hdrlen(fc)); 59 skb->pkt_type = PACKET_OTHERHOST; 60 skb->protocol = __constant_htons(ETH_P_80211_RAW); 61 memset(skb->cb, 0, sizeof(skb->cb)); 62 netif_rx(skb); 63} 64 65 66/* Called only as a tasklet (software IRQ) */ 67static struct ieee80211_frag_entry * 68ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, 69 unsigned int frag, u8 tid,u8 *src, u8 *dst) 70{ 71 struct ieee80211_frag_entry *entry; 72 int i; 73 74 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { 75 entry = &ieee->frag_cache[tid][i]; 76 if (entry->skb != NULL && 77 time_after(jiffies, entry->first_frag_time + 2 * HZ)) { 78 IEEE80211_DEBUG_FRAG( 79 "expiring fragment cache entry " 80 "seq=%u last_frag=%u\n", 81 entry->seq, entry->last_frag); 82 dev_kfree_skb_any(entry->skb); 83 entry->skb = NULL; 84 } 85 86 if (entry->skb != NULL && entry->seq == seq && 87 (entry->last_frag + 1 == frag || frag == -1) && 88 memcmp(entry->src_addr, src, ETH_ALEN) == 0 && 89 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) 90 return entry; 91 } 92 93 return NULL; 94} 95 96/* Called only as a tasklet (software IRQ) */ 97static struct sk_buff * 98ieee80211_frag_cache_get(struct ieee80211_device *ieee, 99 struct ieee80211_hdr_4addr *hdr) 100{ 101 struct sk_buff *skb = NULL; 102 u16 fc = le16_to_cpu(hdr->frame_ctl); 103 u16 sc = le16_to_cpu(hdr->seq_ctl); 104 unsigned int frag = WLAN_GET_SEQ_FRAG(sc); 105 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 106 struct ieee80211_frag_entry *entry; 107 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 108 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 109 u8 tid; 110 111 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 112 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; 113 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 114 tid = UP2AC(tid); 115 tid ++; 116 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 117 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; 118 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 119 tid = UP2AC(tid); 120 tid ++; 121 } else { 122 tid = 0; 123 } 124 125 if (frag == 0) { 126 /* Reserve enough space to fit maximum frame length */ 127 skb = dev_alloc_skb(ieee->dev->mtu + 128 sizeof(struct ieee80211_hdr_4addr) + 129 8 /* LLC */ + 130 2 /* alignment */ + 131 8 /* WEP */ + 132 ETH_ALEN /* WDS */ + 133 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); 134 if (skb == NULL) 135 return NULL; 136 137 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; 138 ieee->frag_next_idx[tid]++; 139 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) 140 ieee->frag_next_idx[tid] = 0; 141 142 if (entry->skb != NULL) 143 dev_kfree_skb_any(entry->skb); 144 145 entry->first_frag_time = jiffies; 146 entry->seq = seq; 147 entry->last_frag = frag; 148 entry->skb = skb; 149 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); 150 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); 151 } else { 152 /* received a fragment of a frame for which the head fragment 153 * should have already been received */ 154 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, 155 hdr->addr1); 156 if (entry != NULL) { 157 entry->last_frag = frag; 158 skb = entry->skb; 159 } 160 } 161 162 return skb; 163} 164 165 166/* Called only as a tasklet (software IRQ) */ 167static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, 168 struct ieee80211_hdr_4addr *hdr) 169{ 170 u16 fc = le16_to_cpu(hdr->frame_ctl); 171 u16 sc = le16_to_cpu(hdr->seq_ctl); 172 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 173 struct ieee80211_frag_entry *entry; 174 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 175 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 176 u8 tid; 177 178 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 179 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; 180 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 181 tid = UP2AC(tid); 182 tid ++; 183 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 184 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; 185 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 186 tid = UP2AC(tid); 187 tid ++; 188 } else { 189 tid = 0; 190 } 191 192 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2, 193 hdr->addr1); 194 195 if (entry == NULL) { 196 IEEE80211_DEBUG_FRAG( 197 "could not invalidate fragment cache " 198 "entry (seq=%u)\n", seq); 199 return -1; 200 } 201 202 entry->skb = NULL; 203 return 0; 204} 205 206 207 208/* ieee80211_rx_frame_mgtmt 209 * 210 * Responsible for handling management control frames 211 * 212 * Called by ieee80211_rx */ 213static inline int 214ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, 215 struct ieee80211_rx_stats *rx_stats, u16 type, 216 u16 stype) 217{ 218 /* On the struct stats definition there is written that 219 * this is not mandatory.... but seems that the probe 220 * response parser uses it 221 */ 222 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data; 223 224 rx_stats->len = skb->len; 225 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats); 226 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) 227 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames 228 { 229 dev_kfree_skb_any(skb); 230 return 0; 231 } 232 233 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); 234 235 dev_kfree_skb_any(skb); 236 237 return 0; 238 239 #ifdef NOT_YET 240 if (ieee->iw_mode == IW_MODE_MASTER) { 241 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n", 242 ieee->dev->name); 243 return 0; 244/* 245 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) 246 skb->data);*/ 247 } 248 249 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) { 250 if (stype == WLAN_FC_STYPE_BEACON && 251 ieee->iw_mode == IW_MODE_MASTER) { 252 struct sk_buff *skb2; 253 /* Process beacon frames also in kernel driver to 254 * update STA(AP) table statistics */ 255 skb2 = skb_clone(skb, GFP_ATOMIC); 256 if (skb2) 257 hostap_rx(skb2->dev, skb2, rx_stats); 258 } 259 260 /* send management frames to the user space daemon for 261 * processing */ 262 ieee->apdevstats.rx_packets++; 263 ieee->apdevstats.rx_bytes += skb->len; 264 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); 265 return 0; 266 } 267 268 if (ieee->iw_mode == IW_MODE_MASTER) { 269 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { 270 printk(KERN_DEBUG "%s: unknown management frame " 271 "(type=0x%02x, stype=0x%02x) dropped\n", 272 skb->dev->name, type, stype); 273 return -1; 274 } 275 276 hostap_rx(skb->dev, skb, rx_stats); 277 return 0; 278 } 279 280 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " 281 "received in non-Host AP mode\n", skb->dev->name); 282 return -1; 283 #endif 284} 285 286 287 288/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ 289/* Ethernet-II snap header (RFC1042 for most EtherTypes) */ 290static unsigned char rfc1042_header[] = 291{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 292/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ 293static unsigned char bridge_tunnel_header[] = 294{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; 295/* No encapsulation header if EtherType < 0x600 (=length) */ 296 297/* Called by ieee80211_rx_frame_decrypt */ 298static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, 299 struct sk_buff *skb, size_t hdrlen) 300{ 301 struct net_device *dev = ieee->dev; 302 u16 fc, ethertype; 303 struct ieee80211_hdr_4addr *hdr; 304 u8 *pos; 305 306 if (skb->len < 24) 307 return 0; 308 309 hdr = (struct ieee80211_hdr_4addr *) skb->data; 310 fc = le16_to_cpu(hdr->frame_ctl); 311 312 /* check that the frame is unicast frame to us */ 313 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 314 IEEE80211_FCTL_TODS && 315 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && 316 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { 317 /* ToDS frame with own addr BSSID and DA */ 318 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 319 IEEE80211_FCTL_FROMDS && 320 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { 321 /* FromDS frame with own addr as DA */ 322 } else 323 return 0; 324 325 if (skb->len < 24 + 8) 326 return 0; 327 328 /* check for port access entity Ethernet type */ 329// pos = skb->data + 24; 330 pos = skb->data + hdrlen; 331 ethertype = (pos[6] << 8) | pos[7]; 332 if (ethertype == ETH_P_PAE) 333 return 1; 334 335 return 0; 336} 337 338/* Called only as a tasklet (software IRQ), by ieee80211_rx */ 339static inline int 340ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb, 341 struct ieee80211_crypt_data *crypt) 342{ 343 struct ieee80211_hdr_4addr *hdr; 344 int res, hdrlen; 345 346 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) 347 return 0; 348 if (ieee->hwsec_active) 349 { 350 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 351 tcb_desc->bHwSec = 1; 352 } 353 hdr = (struct ieee80211_hdr_4addr *) skb->data; 354 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 355 356#ifdef CONFIG_IEEE80211_CRYPT_TKIP 357 if (ieee->tkip_countermeasures && 358 strcmp(crypt->ops->name, "TKIP") == 0) { 359 if (net_ratelimit()) { 360 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " 361 "received packet from %pM\n", 362 ieee->dev->name, hdr->addr2); 363 } 364 return -1; 365 } 366#endif 367 368 atomic_inc(&crypt->refcnt); 369 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); 370 atomic_dec(&crypt->refcnt); 371 if (res < 0) { 372 IEEE80211_DEBUG_DROP( 373 "decryption failed (SA=%pM" 374 ") res=%d\n", hdr->addr2, res); 375 if (res == -2) 376 IEEE80211_DEBUG_DROP("Decryption failed ICV " 377 "mismatch (key %d)\n", 378 skb->data[hdrlen + 3] >> 6); 379 ieee->ieee_stats.rx_discards_undecryptable++; 380 return -1; 381 } 382 383 return res; 384} 385 386 387/* Called only as a tasklet (software IRQ), by ieee80211_rx */ 388static inline int 389ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb, 390 int keyidx, struct ieee80211_crypt_data *crypt) 391{ 392 struct ieee80211_hdr_4addr *hdr; 393 int res, hdrlen; 394 395 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) 396 return 0; 397 if (ieee->hwsec_active) 398 { 399 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 400 tcb_desc->bHwSec = 1; 401 } 402 403 hdr = (struct ieee80211_hdr_4addr *) skb->data; 404 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 405 406 atomic_inc(&crypt->refcnt); 407 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); 408 atomic_dec(&crypt->refcnt); 409 if (res < 0) { 410 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" 411 " (SA=%pM keyidx=%d)\n", 412 ieee->dev->name, hdr->addr2, keyidx); 413 return -1; 414 } 415 416 return 0; 417} 418 419 420/* this function is stolen from ipw2200 driver*/ 421#define IEEE_PACKET_RETRY_TIME (5*HZ) 422static int is_duplicate_packet(struct ieee80211_device *ieee, 423 struct ieee80211_hdr_4addr *header) 424{ 425 u16 fc = le16_to_cpu(header->frame_ctl); 426 u16 sc = le16_to_cpu(header->seq_ctl); 427 u16 seq = WLAN_GET_SEQ_SEQ(sc); 428 u16 frag = WLAN_GET_SEQ_FRAG(sc); 429 u16 *last_seq, *last_frag; 430 unsigned long *last_time; 431 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 432 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 433 u8 tid; 434 435 436 //TO2DS and QoS 437 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 438 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header; 439 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 440 tid = UP2AC(tid); 441 tid ++; 442 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS 443 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header; 444 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 445 tid = UP2AC(tid); 446 tid ++; 447 } else { // no QoS 448 tid = 0; 449 } 450 451 switch (ieee->iw_mode) { 452 case IW_MODE_ADHOC: 453 { 454 struct list_head *p; 455 struct ieee_ibss_seq *entry = NULL; 456 u8 *mac = header->addr2; 457 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; 458 //for (pos = (head)->next; pos != (head); pos = pos->next) 459 //__list_for_each(p, &ieee->ibss_mac_hash[index]) { 460 list_for_each(p, &ieee->ibss_mac_hash[index]) { 461 entry = list_entry(p, struct ieee_ibss_seq, list); 462 if (!memcmp(entry->mac, mac, ETH_ALEN)) 463 break; 464 } 465 // if (memcmp(entry->mac, mac, ETH_ALEN)){ 466 if (p == &ieee->ibss_mac_hash[index]) { 467 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); 468 if (!entry) { 469 printk(KERN_WARNING "Cannot malloc new mac entry\n"); 470 return 0; 471 } 472 memcpy(entry->mac, mac, ETH_ALEN); 473 entry->seq_num[tid] = seq; 474 entry->frag_num[tid] = frag; 475 entry->packet_time[tid] = jiffies; 476 list_add(&entry->list, &ieee->ibss_mac_hash[index]); 477 return 0; 478 } 479 last_seq = &entry->seq_num[tid]; 480 last_frag = &entry->frag_num[tid]; 481 last_time = &entry->packet_time[tid]; 482 break; 483 } 484 485 case IW_MODE_INFRA: 486 last_seq = &ieee->last_rxseq_num[tid]; 487 last_frag = &ieee->last_rxfrag_num[tid]; 488 last_time = &ieee->last_packet_time[tid]; 489 490 break; 491 default: 492 return 0; 493 } 494 495// if(tid != 0) { 496// printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); 497// } 498 if ((*last_seq == seq) && 499 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { 500 if (*last_frag == frag){ 501 //printk(KERN_WARNING "[1] go drop!\n"); 502 goto drop; 503 504 } 505 if (*last_frag + 1 != frag) 506 /* out-of-order fragment */ 507 //printk(KERN_WARNING "[2] go drop!\n"); 508 goto drop; 509 } else 510 *last_seq = seq; 511 512 *last_frag = frag; 513 *last_time = jiffies; 514 return 0; 515 516drop: 517// BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); 518// printk("DUP\n"); 519 520 return 1; 521} 522bool 523AddReorderEntry( 524 PRX_TS_RECORD pTS, 525 PRX_REORDER_ENTRY pReorderEntry 526 ) 527{ 528 struct list_head *pList = &pTS->RxPendingPktList; 529 while(pList->next != &pTS->RxPendingPktList) 530 { 531 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 532 { 533 pList = pList->next; 534 } 535 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 536 { 537 return false; 538 } 539 else 540 { 541 break; 542 } 543 } 544 pReorderEntry->List.next = pList->next; 545 pReorderEntry->List.next->prev = &pReorderEntry->List; 546 pReorderEntry->List.prev = pList; 547 pList->next = &pReorderEntry->List; 548 549 return true; 550} 551 552void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index) 553{ 554 u8 i = 0 , j=0; 555 u16 ethertype; 556// if(index > 1) 557// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index); 558 for(j = 0; j<index; j++) 559 { 560//added by amy for reorder 561 struct ieee80211_rxb* prxb = prxbIndicateArray[j]; 562 for(i = 0; i<prxb->nr_subframes; i++) { 563 struct sk_buff *sub_skb = prxb->subframes[i]; 564 565 /* convert hdr + possible LLC headers into Ethernet header */ 566 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 567 if (sub_skb->len >= 8 && 568 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 569 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 570 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 571 /* remove RFC1042 or Bridge-Tunnel encapsulation and 572 * replace EtherType */ 573 skb_pull(sub_skb, SNAP_SIZE); 574 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 575 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 576 } else { 577 u16 len; 578 /* Leave Ethernet header part of hdr and full payload */ 579 len = htons(sub_skb->len); 580 memcpy(skb_push(sub_skb, 2), &len, 2); 581 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 582 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 583 } 584 //stats->rx_packets++; 585 //stats->rx_bytes += sub_skb->len; 586 587 /* Indicat the packets to upper layer */ 588 if (sub_skb) { 589 //printk("0skb_len(%d)\n", skb->len); 590 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); 591 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 592 sub_skb->dev = ieee->dev; 593 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 594 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 595 ieee->last_rx_ps_time = jiffies; 596 //printk("1skb_len(%d)\n", skb->len); 597 netif_rx(sub_skb); 598 } 599 } 600 kfree(prxb); 601 prxb = NULL; 602 } 603} 604 605 606void RxReorderIndicatePacket( struct ieee80211_device *ieee, 607 struct ieee80211_rxb* prxb, 608 PRX_TS_RECORD pTS, 609 u16 SeqNum) 610{ 611 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; 612 PRX_REORDER_ENTRY pReorderEntry = NULL; 613 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE]; 614 u8 WinSize = pHTInfo->RxReorderWinSize; 615 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; 616 u8 index = 0; 617 bool bMatchWinStart = false, bPktInBuf = false; 618 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize); 619 /* Rx Reorder initialize condition.*/ 620 if(pTS->RxIndicateSeq == 0xffff) { 621 pTS->RxIndicateSeq = SeqNum; 622 } 623 624 /* Drop out the packet which SeqNum is smaller than WinStart */ 625 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) { 626 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", 627 pTS->RxIndicateSeq, SeqNum); 628 pHTInfo->RxReorderDropCounter++; 629 { 630 int i; 631 for(i =0; i < prxb->nr_subframes; i++) { 632 dev_kfree_skb(prxb->subframes[i]); 633 } 634 kfree(prxb); 635 prxb = NULL; 636 } 637 return; 638 } 639 640 /* 641 * Sliding window manipulation. Conditions includes: 642 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 643 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N 644 */ 645 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { 646 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 647 bMatchWinStart = true; 648 } else if(SN_LESS(WinEnd, SeqNum)) { 649 if(SeqNum >= (WinSize - 1)) { 650 pTS->RxIndicateSeq = SeqNum + 1 -WinSize; 651 } else { 652 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; 653 } 654 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 655 } 656 657 /* 658 * Indication process. 659 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets 660 * with the SeqNum smaller than latest WinStart and buffer other packets. 661 */ 662 /* For Rx Reorder condition: 663 * 1. All packets with SeqNum smaller than WinStart => Indicate 664 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. 665 */ 666 if(bMatchWinStart) { 667 /* Current packet is going to be indicated.*/ 668 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ 669 pTS->RxIndicateSeq, SeqNum); 670 prxbIndicateArray[0] = prxb; 671// printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum); 672 index = 1; 673 } else { 674 /* Current packet is going to be inserted into pending list.*/ 675 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__); 676 if(!list_empty(&ieee->RxReorder_Unused_List)) { 677 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); 678 list_del_init(&pReorderEntry->List); 679 680 /* Make a reorder entry and insert into a the packet list.*/ 681 pReorderEntry->SeqNum = SeqNum; 682 pReorderEntry->prxb = prxb; 683 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); 684 685 if(!AddReorderEntry(pTS, pReorderEntry)) { 686 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", 687 __FUNCTION__, pTS->RxIndicateSeq, SeqNum); 688 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 689 { 690 int i; 691 for(i =0; i < prxb->nr_subframes; i++) { 692 dev_kfree_skb(prxb->subframes[i]); 693 } 694 kfree(prxb); 695 prxb = NULL; 696 } 697 } else { 698 IEEE80211_DEBUG(IEEE80211_DL_REORDER, 699 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 700 } 701 } 702 else { 703 /* 704 * Packets are dropped if there is not enough reorder entries. 705 * This part shall be modified!! We can just indicate all the 706 * packets in buffer and get reorder entries. 707 */ 708 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); 709 { 710 int i; 711 for(i =0; i < prxb->nr_subframes; i++) { 712 dev_kfree_skb(prxb->subframes[i]); 713 } 714 kfree(prxb); 715 prxb = NULL; 716 } 717 } 718 } 719 720 /* Check if there is any packet need indicate.*/ 721 while(!list_empty(&pTS->RxPendingPktList)) { 722 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__); 723 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); 724 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || 725 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 726 { 727 /* This protect buffer from overflow. */ 728 if(index >= REORDER_WIN_SIZE) { 729 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); 730 bPktInBuf = true; 731 break; 732 } 733 734 list_del_init(&pReorderEntry->List); 735 736 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 737 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 738 739 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 740 prxbIndicateArray[index] = pReorderEntry->prxb; 741 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); 742 index++; 743 744 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 745 } else { 746 bPktInBuf = true; 747 break; 748 } 749 } 750 751 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ 752 if(index>0) { 753 // Cancel previous pending timer. 754 // del_timer_sync(&pTS->RxPktPendingTimer); 755 pTS->RxTimeoutIndicateSeq = 0xffff; 756 757 // Indicate packets 758 if(index>REORDER_WIN_SIZE){ 759 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n"); 760 return; 761 } 762 ieee80211_indicate_packets(ieee, prxbIndicateArray, index); 763 } 764 765 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { 766 // Set new pending timer. 767 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__); 768 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; 769 if(timer_pending(&pTS->RxPktPendingTimer)) 770 del_timer_sync(&pTS->RxPktPendingTimer); 771 pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime); 772 add_timer(&pTS->RxPktPendingTimer); 773 } 774} 775 776u8 parse_subframe(struct sk_buff *skb, 777 struct ieee80211_rx_stats *rx_stats, 778 struct ieee80211_rxb *rxb,u8* src,u8* dst) 779{ 780 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data; 781 u16 fc = le16_to_cpu(hdr->frame_ctl); 782 783 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr); 784 u16 ChkLength; 785 bool bIsAggregateFrame = false; 786 u16 nSubframe_Length; 787 u8 nPadding_Length = 0; 788 u16 SeqNum=0; 789 790 struct sk_buff *sub_skb; 791 u8 *data_ptr; 792 /* just for debug purpose */ 793 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); 794 795 if((IEEE80211_QOS_HAS_SEQ(fc))&&\ 796 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { 797 bIsAggregateFrame = true; 798 } 799 800 if(IEEE80211_QOS_HAS_SEQ(fc)) { 801 LLCOffset += 2; 802 } 803 804 if(rx_stats->bContainHTC) { 805 LLCOffset += sHTCLng; 806 } 807 //printk("ChkLength = %d\n", LLCOffset); 808 // Null packet, don't indicate it to upper layer 809 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ 810 811 if( skb->len <= ChkLength ) { 812 return 0; 813 } 814 815 skb_pull(skb, LLCOffset); 816 817 if(!bIsAggregateFrame) { 818 rxb->nr_subframes = 1; 819#ifdef JOHN_NOCPY 820 rxb->subframes[0] = skb; 821#else 822 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC); 823#endif 824 825 memcpy(rxb->src,src,ETH_ALEN); 826 memcpy(rxb->dst,dst,ETH_ALEN); 827 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len); 828 return 1; 829 } else { 830 rxb->nr_subframes = 0; 831 memcpy(rxb->src,src,ETH_ALEN); 832 memcpy(rxb->dst,dst,ETH_ALEN); 833 while(skb->len > ETHERNET_HEADER_SIZE) { 834 /* Offset 12 denote 2 mac address */ 835 nSubframe_Length = *((u16*)(skb->data + 12)); 836 //==m==>change the length order 837 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8); 838 839 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) { 840 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\ 841 __FUNCTION__,rxb->nr_subframes); 842 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length); 843 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length); 844 printk("The Packet SeqNum is %d\n",SeqNum); 845 return 0; 846 } 847 848 /* move the data point to data content */ 849 skb_pull(skb, ETHERNET_HEADER_SIZE); 850 851#ifdef JOHN_NOCPY 852 sub_skb = skb_clone(skb, GFP_ATOMIC); 853 sub_skb->len = nSubframe_Length; 854 sub_skb->tail = sub_skb->data + nSubframe_Length; 855#else 856 /* Allocate new skb for releasing to upper layer */ 857 sub_skb = dev_alloc_skb(nSubframe_Length + 12); 858 skb_reserve(sub_skb, 12); 859 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length); 860 memcpy(data_ptr,skb->data,nSubframe_Length); 861#endif 862 rxb->subframes[rxb->nr_subframes++] = sub_skb; 863 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) { 864 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n"); 865 break; 866 } 867 skb_pull(skb,nSubframe_Length); 868 869 if(skb->len != 0) { 870 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4); 871 if(nPadding_Length == 4) { 872 nPadding_Length = 0; 873 } 874 875 if(skb->len < nPadding_Length) { 876 return 0; 877 } 878 879 skb_pull(skb,nPadding_Length); 880 } 881 } 882#ifdef JOHN_NOCPY 883 dev_kfree_skb(skb); 884#endif 885 //{just for debug added by david 886 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes); 887 //} 888 return rxb->nr_subframes; 889 } 890} 891 892/* All received frames are sent to this function. @skb contains the frame in 893 * IEEE 802.11 format, i.e., in the format it was sent over air. 894 * This function is called only as a tasklet (software IRQ). */ 895int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, 896 struct ieee80211_rx_stats *rx_stats) 897{ 898 struct net_device *dev = ieee->dev; 899 struct ieee80211_hdr_4addr *hdr; 900 //struct ieee80211_hdr_3addrqos *hdr; 901 902 size_t hdrlen; 903 u16 fc, type, stype, sc; 904 struct net_device_stats *stats; 905 unsigned int frag; 906 u8 *payload; 907 u16 ethertype; 908 //added by amy for reorder 909 u8 TID = 0; 910 u16 SeqNum = 0; 911 PRX_TS_RECORD pTS = NULL; 912 //bool bIsAggregateFrame = false; 913 //added by amy for reorder 914#ifdef NOT_YET 915 struct net_device *wds = NULL; 916 struct sk_buff *skb2 = NULL; 917 struct net_device *wds = NULL; 918 int frame_authorized = 0; 919 int from_assoc_ap = 0; 920 void *sta = NULL; 921#endif 922// u16 qos_ctl = 0; 923 u8 dst[ETH_ALEN]; 924 u8 src[ETH_ALEN]; 925 u8 bssid[ETH_ALEN]; 926 struct ieee80211_crypt_data *crypt = NULL; 927 int keyidx = 0; 928 929 int i; 930 struct ieee80211_rxb* rxb = NULL; 931 // cheat the the hdr type 932 hdr = (struct ieee80211_hdr_4addr *)skb->data; 933 stats = &ieee->stats; 934 935 if (skb->len < 10) { 936 printk(KERN_INFO "%s: SKB length < 10\n", 937 dev->name); 938 goto rx_dropped; 939 } 940 941 fc = le16_to_cpu(hdr->frame_ctl); 942 type = WLAN_FC_GET_TYPE(fc); 943 stype = WLAN_FC_GET_STYPE(fc); 944 sc = le16_to_cpu(hdr->seq_ctl); 945 946 frag = WLAN_GET_SEQ_FRAG(sc); 947 hdrlen = ieee80211_get_hdrlen(fc); 948 949 if(HTCCheck(ieee, skb->data)) 950 { 951 if(net_ratelimit()) 952 printk("find HTCControl\n"); 953 hdrlen += 4; 954 rx_stats->bContainHTC = 1; 955 } 956 957 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 958#ifdef NOT_YET 959#if WIRELESS_EXT > 15 960 /* Put this code here so that we avoid duplicating it in all 961 * Rx paths. - Jean II */ 962#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ 963 /* If spy monitoring on */ 964 if (iface->spy_data.spy_number > 0) { 965 struct iw_quality wstats; 966 wstats.level = rx_stats->rssi; 967 wstats.noise = rx_stats->noise; 968 wstats.updated = 6; /* No qual value */ 969 /* Update spy records */ 970 wireless_spy_update(dev, hdr->addr2, &wstats); 971 } 972#endif /* IW_WIRELESS_SPY */ 973#endif /* WIRELESS_EXT > 15 */ 974 hostap_update_rx_stats(local->ap, hdr, rx_stats); 975#endif 976 977#if WIRELESS_EXT > 15 978 if (ieee->iw_mode == IW_MODE_MONITOR) { 979 ieee80211_monitor_rx(ieee, skb, rx_stats); 980 stats->rx_packets++; 981 stats->rx_bytes += skb->len; 982 return 1; 983 } 984#endif 985 if (ieee->host_decrypt) { 986 int idx = 0; 987 if (skb->len >= hdrlen + 3) 988 idx = skb->data[hdrlen + 3] >> 6; 989 crypt = ieee->crypt[idx]; 990#ifdef NOT_YET 991 sta = NULL; 992 993 /* Use station specific key to override default keys if the 994 * receiver address is a unicast address ("individual RA"). If 995 * bcrx_sta_key parameter is set, station specific key is used 996 * even with broad/multicast targets (this is against IEEE 997 * 802.11, but makes it easier to use different keys with 998 * stations that do not support WEP key mapping). */ 999 1000 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) 1001 (void) hostap_handle_sta_crypto(local, hdr, &crypt, 1002 &sta); 1003#endif 1004 1005 /* allow NULL decrypt to indicate an station specific override 1006 * for default encryption */ 1007 if (crypt && (crypt->ops == NULL || 1008 crypt->ops->decrypt_mpdu == NULL)) 1009 crypt = NULL; 1010 1011 if (!crypt && (fc & IEEE80211_FCTL_WEP)) { 1012 /* This seems to be triggered by some (multicast?) 1013 * frames from other than current BSS, so just drop the 1014 * frames silently instead of filling system log with 1015 * these reports. */ 1016 IEEE80211_DEBUG_DROP("Decryption failed (not set)" 1017 " (SA=%pM)\n", 1018 hdr->addr2); 1019 ieee->ieee_stats.rx_discards_undecryptable++; 1020 goto rx_dropped; 1021 } 1022 } 1023 1024 if (skb->len < IEEE80211_DATA_HDR3_LEN) 1025 goto rx_dropped; 1026 1027 // if QoS enabled, should check the sequence for each of the AC 1028 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){ 1029 if (is_duplicate_packet(ieee, hdr)) 1030 goto rx_dropped; 1031 1032 } 1033 else 1034 { 1035 PRX_TS_RECORD pRxTS = NULL; 1036 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid); 1037 if(GetTs( 1038 ieee, 1039 (PTS_COMMON_INFO*) &pRxTS, 1040 hdr->addr2, 1041 (u8)Frame_QoSTID((u8*)(skb->data)), 1042 RX_DIR, 1043 true)) 1044 { 1045 1046 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc)); 1047 if( (fc & (1<<11)) && 1048 (frag == pRxTS->RxLastFragNum) && 1049 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) ) 1050 { 1051 goto rx_dropped; 1052 } 1053 else 1054 { 1055 pRxTS->RxLastFragNum = frag; 1056 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); 1057 } 1058 } 1059 else 1060 { 1061 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__); 1062 goto rx_dropped; 1063 } 1064 } 1065 if (type == IEEE80211_FTYPE_MGMT) { 1066 1067 1068 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1069 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) 1070 goto rx_dropped; 1071 else 1072 goto rx_exit; 1073 } 1074 1075 /* Data frame - extract src/dst addresses */ 1076 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { 1077 case IEEE80211_FCTL_FROMDS: 1078 memcpy(dst, hdr->addr1, ETH_ALEN); 1079 memcpy(src, hdr->addr3, ETH_ALEN); 1080 memcpy(bssid, hdr->addr2, ETH_ALEN); 1081 break; 1082 case IEEE80211_FCTL_TODS: 1083 memcpy(dst, hdr->addr3, ETH_ALEN); 1084 memcpy(src, hdr->addr2, ETH_ALEN); 1085 memcpy(bssid, hdr->addr1, ETH_ALEN); 1086 break; 1087 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: 1088 if (skb->len < IEEE80211_DATA_HDR4_LEN) 1089 goto rx_dropped; 1090 memcpy(dst, hdr->addr3, ETH_ALEN); 1091 memcpy(src, hdr->addr4, ETH_ALEN); 1092 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); 1093 break; 1094 case 0: 1095 memcpy(dst, hdr->addr1, ETH_ALEN); 1096 memcpy(src, hdr->addr2, ETH_ALEN); 1097 memcpy(bssid, hdr->addr3, ETH_ALEN); 1098 break; 1099 } 1100 1101#ifdef NOT_YET 1102 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds)) 1103 goto rx_dropped; 1104 if (wds) { 1105 skb->dev = dev = wds; 1106 stats = hostap_get_stats(dev); 1107 } 1108 1109 if (ieee->iw_mode == IW_MODE_MASTER && !wds && 1110 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS && 1111 ieee->stadev && 1112 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) { 1113 /* Frame from BSSID of the AP for which we are a client */ 1114 skb->dev = dev = ieee->stadev; 1115 stats = hostap_get_stats(dev); 1116 from_assoc_ap = 1; 1117 } 1118#endif 1119 1120 dev->last_rx = jiffies; 1121 1122#ifdef NOT_YET 1123 if ((ieee->iw_mode == IW_MODE_MASTER || 1124 ieee->iw_mode == IW_MODE_REPEAT) && 1125 !from_assoc_ap) { 1126 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, 1127 wds != NULL)) { 1128 case AP_RX_CONTINUE_NOT_AUTHORIZED: 1129 frame_authorized = 0; 1130 break; 1131 case AP_RX_CONTINUE: 1132 frame_authorized = 1; 1133 break; 1134 case AP_RX_DROP: 1135 goto rx_dropped; 1136 case AP_RX_EXIT: 1137 goto rx_exit; 1138 } 1139 } 1140#endif 1141 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1142 /* Nullfunc frames may have PS-bit set, so they must be passed to 1143 * hostap_handle_sta_rx() before being dropped here. */ 1144 if (stype != IEEE80211_STYPE_DATA && 1145 stype != IEEE80211_STYPE_DATA_CFACK && 1146 stype != IEEE80211_STYPE_DATA_CFPOLL && 1147 stype != IEEE80211_STYPE_DATA_CFACKPOLL&& 1148 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 1149 ) { 1150 if (stype != IEEE80211_STYPE_NULLFUNC) 1151 IEEE80211_DEBUG_DROP( 1152 "RX: dropped data frame " 1153 "with no data (type=0x%02x, " 1154 "subtype=0x%02x, len=%d)\n", 1155 type, stype, skb->len); 1156 goto rx_dropped; 1157 } 1158 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) 1159 goto rx_dropped; 1160 1161 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ 1162 1163 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1164 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) 1165 { 1166 printk("decrypt frame error\n"); 1167 goto rx_dropped; 1168 } 1169 1170 1171 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1172 1173 /* skb: hdr + (possibly fragmented) plaintext payload */ 1174 // PR: FIXME: hostap has additional conditions in the "if" below: 1175 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1176 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { 1177 int flen; 1178 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); 1179 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); 1180 1181 if (!frag_skb) { 1182 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, 1183 "Rx cannot get skb from fragment " 1184 "cache (morefrag=%d seq=%u frag=%u)\n", 1185 (fc & IEEE80211_FCTL_MOREFRAGS) != 0, 1186 WLAN_GET_SEQ_SEQ(sc), frag); 1187 goto rx_dropped; 1188 } 1189 flen = skb->len; 1190 if (frag != 0) 1191 flen -= hdrlen; 1192 1193 if (frag_skb->tail + flen > frag_skb->end) { 1194 printk(KERN_WARNING "%s: host decrypted and " 1195 "reassembled frame did not fit skb\n", 1196 dev->name); 1197 ieee80211_frag_cache_invalidate(ieee, hdr); 1198 goto rx_dropped; 1199 } 1200 1201 if (frag == 0) { 1202 /* copy first fragment (including full headers) into 1203 * beginning of the fragment cache skb */ 1204 memcpy(skb_put(frag_skb, flen), skb->data, flen); 1205 } else { 1206 /* append frame payload to the end of the fragment 1207 * cache skb */ 1208 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, 1209 flen); 1210 } 1211 dev_kfree_skb_any(skb); 1212 skb = NULL; 1213 1214 if (fc & IEEE80211_FCTL_MOREFRAGS) { 1215 /* more fragments expected - leave the skb in fragment 1216 * cache for now; it will be delivered to upper layers 1217 * after all fragments have been received */ 1218 goto rx_exit; 1219 } 1220 1221 /* this was the last fragment and the frame will be 1222 * delivered, so remove skb from fragment cache */ 1223 skb = frag_skb; 1224 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1225 ieee80211_frag_cache_invalidate(ieee, hdr); 1226 } 1227 1228 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still 1229 * encrypted/authenticated */ 1230 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1231 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) 1232 { 1233 printk("==>decrypt msdu error\n"); 1234 goto rx_dropped; 1235 } 1236 1237 //added by amy for AP roaming 1238 ieee->LinkDetectInfo.NumRecvDataInPeriod++; 1239 ieee->LinkDetectInfo.NumRxOkInPeriod++; 1240 1241 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1242 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { 1243 if (/*ieee->ieee802_1x &&*/ 1244 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1245 1246#ifdef CONFIG_IEEE80211_DEBUG 1247 /* pass unencrypted EAPOL frames even if encryption is 1248 * configured */ 1249 struct eapol *eap = (struct eapol *)(skb->data + 1250 24); 1251 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1252 eap_get_type(eap->type)); 1253#endif 1254 } else { 1255 IEEE80211_DEBUG_DROP( 1256 "encryption configured, but RX " 1257 "frame not encrypted (SA=%pM)\n", 1258 hdr->addr2); 1259 goto rx_dropped; 1260 } 1261 } 1262 1263#ifdef CONFIG_IEEE80211_DEBUG 1264 if (crypt && !(fc & IEEE80211_FCTL_WEP) && 1265 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1266 struct eapol *eap = (struct eapol *)(skb->data + 1267 24); 1268 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1269 eap_get_type(eap->type)); 1270 } 1271#endif 1272 1273 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && 1274 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1275 IEEE80211_DEBUG_DROP( 1276 "dropped unencrypted RX data " 1277 "frame from %pM" 1278 " (drop_unencrypted=1)\n", 1279 hdr->addr2); 1280 goto rx_dropped; 1281 } 1282/* 1283 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1284 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); 1285 } 1286*/ 1287//added by amy for reorder 1288 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) 1289 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)) 1290 { 1291 TID = Frame_QoSTID(skb->data); 1292 SeqNum = WLAN_GET_SEQ_SEQ(sc); 1293 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true); 1294 if(TID !=0 && TID !=3) 1295 { 1296 ieee->bis_any_nonbepkts = true; 1297 } 1298 } 1299//added by amy for reorder 1300 /* skb: hdr + (possible reassembled) full plaintext payload */ 1301 payload = skb->data + hdrlen; 1302 //ethertype = (payload[6] << 8) | payload[7]; 1303 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); 1304 if(rxb == NULL) 1305 { 1306 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__); 1307 goto rx_dropped; 1308 } 1309 /* to parse amsdu packets */ 1310 /* qos data packets & reserved bit is 1 */ 1311 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) { 1312 /* only to free rxb, and not submit the packets to upper layer */ 1313 for(i =0; i < rxb->nr_subframes; i++) { 1314 dev_kfree_skb(rxb->subframes[i]); 1315 } 1316 kfree(rxb); 1317 rxb = NULL; 1318 goto rx_dropped; 1319 } 1320 1321//added by amy for reorder 1322 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){ 1323//added by amy for reorder 1324 for(i = 0; i<rxb->nr_subframes; i++) { 1325 struct sk_buff *sub_skb = rxb->subframes[i]; 1326 1327 if (sub_skb) { 1328 /* convert hdr + possible LLC headers into Ethernet header */ 1329 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 1330 if (sub_skb->len >= 8 && 1331 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 1332 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 1333 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 1334 /* remove RFC1042 or Bridge-Tunnel encapsulation and 1335 * replace EtherType */ 1336 skb_pull(sub_skb, SNAP_SIZE); 1337 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1338 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1339 } else { 1340 u16 len; 1341 /* Leave Ethernet header part of hdr and full payload */ 1342 len = htons(sub_skb->len); 1343 memcpy(skb_push(sub_skb, 2), &len, 2); 1344 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1345 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1346 } 1347 1348 stats->rx_packets++; 1349 stats->rx_bytes += sub_skb->len; 1350 if(is_multicast_ether_addr(dst)) { 1351 stats->multicast++; 1352 } 1353 1354 /* Indicat the packets to upper layer */ 1355 //printk("0skb_len(%d)\n", skb->len); 1356 sub_skb->protocol = eth_type_trans(sub_skb, dev); 1357 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 1358 sub_skb->dev = dev; 1359 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 1360 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 1361 ieee->last_rx_ps_time = jiffies; 1362 //printk("1skb_len(%d)\n", skb->len); 1363 netif_rx(sub_skb); 1364 } 1365 } 1366 kfree(rxb); 1367 rxb = NULL; 1368 1369 } 1370 else 1371 { 1372 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__); 1373 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); 1374 } 1375#ifndef JOHN_NOCPY 1376 dev_kfree_skb(skb); 1377#endif 1378 1379 rx_exit: 1380#ifdef NOT_YET 1381 if (sta) 1382 hostap_handle_sta_release(sta); 1383#endif 1384 return 1; 1385 1386 rx_dropped: 1387 kfree(rxb); 1388 rxb = NULL; 1389 stats->rx_dropped++; 1390 1391 /* Returning 0 indicates to caller that we have not handled the SKB-- 1392 * so it is still allocated and can be used again by underlying 1393 * hardware as a DMA target */ 1394 return 0; 1395} 1396 1397#define MGMT_FRAME_FIXED_PART_LENGTH 0x24 1398 1399static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; 1400 1401/* 1402* Make ther structure we read from the beacon packet has 1403* the right values 1404*/ 1405static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element 1406 *info_element, int sub_type) 1407{ 1408 1409 if (info_element->qui_subtype != sub_type) 1410 return -1; 1411 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) 1412 return -1; 1413 if (info_element->qui_type != QOS_OUI_TYPE) 1414 return -1; 1415 if (info_element->version != QOS_VERSION_1) 1416 return -1; 1417 1418 return 0; 1419} 1420 1421 1422/* 1423 * Parse a QoS parameter element 1424 */ 1425static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info 1426 *element_param, struct ieee80211_info_element 1427 *info_element) 1428{ 1429 int ret = 0; 1430 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; 1431 1432 if ((info_element == NULL) || (element_param == NULL)) 1433 return -1; 1434 1435 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { 1436 memcpy(element_param->info_element.qui, info_element->data, 1437 info_element->len); 1438 element_param->info_element.elementID = info_element->id; 1439 element_param->info_element.length = info_element->len; 1440 } else 1441 ret = -1; 1442 if (ret == 0) 1443 ret = ieee80211_verify_qos_info(&element_param->info_element, 1444 QOS_OUI_PARAM_SUB_TYPE); 1445 return ret; 1446} 1447 1448/* 1449 * Parse a QoS information element 1450 */ 1451static int ieee80211_read_qos_info_element(struct 1452 ieee80211_qos_information_element 1453 *element_info, struct ieee80211_info_element 1454 *info_element) 1455{ 1456 int ret = 0; 1457 u16 size = sizeof(struct ieee80211_qos_information_element) - 2; 1458 1459 if (element_info == NULL) 1460 return -1; 1461 if (info_element == NULL) 1462 return -1; 1463 1464 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { 1465 memcpy(element_info->qui, info_element->data, 1466 info_element->len); 1467 element_info->elementID = info_element->id; 1468 element_info->length = info_element->len; 1469 } else 1470 ret = -1; 1471 1472 if (ret == 0) 1473 ret = ieee80211_verify_qos_info(element_info, 1474 QOS_OUI_INFO_SUB_TYPE); 1475 return ret; 1476} 1477 1478 1479/* 1480 * Write QoS parameters from the ac parameters. 1481 */ 1482static int ieee80211_qos_convert_ac_to_parameters(struct 1483 ieee80211_qos_parameter_info 1484 *param_elm, struct 1485 ieee80211_qos_parameters 1486 *qos_param) 1487{ 1488 int rc = 0; 1489 int i; 1490 struct ieee80211_qos_ac_parameter *ac_params; 1491 u8 aci; 1492 //u8 cw_min; 1493 //u8 cw_max; 1494 1495 for (i = 0; i < QOS_QUEUE_NUM; i++) { 1496 ac_params = &(param_elm->ac_params_record[i]); 1497 1498 aci = (ac_params->aci_aifsn & 0x60) >> 5; 1499 1500 if(aci >= QOS_QUEUE_NUM) 1501 continue; 1502 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; 1503 1504 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ 1505 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; 1506 1507 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; 1508 1509 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; 1510 1511 qos_param->flag[aci] = 1512 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; 1513 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); 1514 } 1515 return rc; 1516} 1517 1518/* 1519 * we have a generic data element which it may contain QoS information or 1520 * parameters element. check the information element length to decide 1521 * which type to read 1522 */ 1523static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element 1524 *info_element, 1525 struct ieee80211_network *network) 1526{ 1527 int rc = 0; 1528 struct ieee80211_qos_parameters *qos_param = NULL; 1529 struct ieee80211_qos_information_element qos_info_element; 1530 1531 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); 1532 1533 if (rc == 0) { 1534 network->qos_data.param_count = qos_info_element.ac_info & 0x0F; 1535 network->flags |= NETWORK_HAS_QOS_INFORMATION; 1536 } else { 1537 struct ieee80211_qos_parameter_info param_element; 1538 1539 rc = ieee80211_read_qos_param_element(¶m_element, 1540 info_element); 1541 if (rc == 0) { 1542 qos_param = &(network->qos_data.parameters); 1543 ieee80211_qos_convert_ac_to_parameters(¶m_element, 1544 qos_param); 1545 network->flags |= NETWORK_HAS_QOS_PARAMETERS; 1546 network->qos_data.param_count = 1547 param_element.info_element.ac_info & 0x0F; 1548 } 1549 } 1550 1551 if (rc == 0) { 1552 IEEE80211_DEBUG_QOS("QoS is supported\n"); 1553 network->qos_data.supported = 1; 1554 } 1555 return rc; 1556} 1557 1558#ifdef CONFIG_IEEE80211_DEBUG 1559#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x 1560 1561static const char *get_info_element_string(u16 id) 1562{ 1563 switch (id) { 1564 MFIE_STRING(SSID); 1565 MFIE_STRING(RATES); 1566 MFIE_STRING(FH_SET); 1567 MFIE_STRING(DS_SET); 1568 MFIE_STRING(CF_SET); 1569 MFIE_STRING(TIM); 1570 MFIE_STRING(IBSS_SET); 1571 MFIE_STRING(COUNTRY); 1572 MFIE_STRING(HOP_PARAMS); 1573 MFIE_STRING(HOP_TABLE); 1574 MFIE_STRING(REQUEST); 1575 MFIE_STRING(CHALLENGE); 1576 MFIE_STRING(POWER_CONSTRAINT); 1577 MFIE_STRING(POWER_CAPABILITY); 1578 MFIE_STRING(TPC_REQUEST); 1579 MFIE_STRING(TPC_REPORT); 1580 MFIE_STRING(SUPP_CHANNELS); 1581 MFIE_STRING(CSA); 1582 MFIE_STRING(MEASURE_REQUEST); 1583 MFIE_STRING(MEASURE_REPORT); 1584 MFIE_STRING(QUIET); 1585 MFIE_STRING(IBSS_DFS); 1586 // MFIE_STRING(ERP_INFO); 1587 MFIE_STRING(RSN); 1588 MFIE_STRING(RATES_EX); 1589 MFIE_STRING(GENERIC); 1590 MFIE_STRING(QOS_PARAMETER); 1591 default: 1592 return "UNKNOWN"; 1593 } 1594} 1595#endif 1596 1597static inline void ieee80211_extract_country_ie( 1598 struct ieee80211_device *ieee, 1599 struct ieee80211_info_element *info_element, 1600 struct ieee80211_network *network, 1601 u8 * addr2 1602) 1603{ 1604 if(IS_DOT11D_ENABLE(ieee)) 1605 { 1606 if(info_element->len!= 0) 1607 { 1608 memcpy(network->CountryIeBuf, info_element->data, info_element->len); 1609 network->CountryIeLen = info_element->len; 1610 1611 if(!IS_COUNTRY_IE_VALID(ieee)) 1612 { 1613 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); 1614 } 1615 } 1616 1617 // 1618 // 070305, rcnjko: I update country IE watch dog here because 1619 // some AP (e.g. Cisco 1242) don't include country IE in their 1620 // probe response frame. 1621 // 1622 if(IS_EQUAL_CIE_SRC(ieee, addr2) ) 1623 { 1624 UPDATE_CIE_WATCHDOG(ieee); 1625 } 1626 } 1627 1628} 1629 1630int ieee80211_parse_info_param(struct ieee80211_device *ieee, 1631 struct ieee80211_info_element *info_element, 1632 u16 length, 1633 struct ieee80211_network *network, 1634 struct ieee80211_rx_stats *stats) 1635{ 1636 u8 i; 1637 short offset; 1638 u16 tmp_htcap_len=0; 1639 u16 tmp_htinfo_len=0; 1640 u16 ht_realtek_agg_len=0; 1641 u8 ht_realtek_agg_buf[MAX_IE_LEN]; 1642// u16 broadcom_len = 0; 1643#ifdef CONFIG_IEEE80211_DEBUG 1644 char rates_str[64]; 1645 char *p; 1646#endif 1647 1648 while (length >= sizeof(*info_element)) { 1649 if (sizeof(*info_element) + info_element->len > length) { 1650 IEEE80211_DEBUG_MGMT("Info elem: parse failed: " 1651 "info_element->len + 2 > left : " 1652 "info_element->len+2=%zd left=%d, id=%d.\n", 1653 info_element->len + 1654 sizeof(*info_element), 1655 length, info_element->id); 1656 /* We stop processing but don't return an error here 1657 * because some misbehaviour APs break this rule. ie. 1658 * Orinoco AP1000. */ 1659 break; 1660 } 1661 1662 switch (info_element->id) { 1663 case MFIE_TYPE_SSID: 1664 if (ieee80211_is_empty_essid(info_element->data, 1665 info_element->len)) { 1666 network->flags |= NETWORK_EMPTY_ESSID; 1667 break; 1668 } 1669 1670 network->ssid_len = min(info_element->len, 1671 (u8) IW_ESSID_MAX_SIZE); 1672 memcpy(network->ssid, info_element->data, network->ssid_len); 1673 if (network->ssid_len < IW_ESSID_MAX_SIZE) 1674 memset(network->ssid + network->ssid_len, 0, 1675 IW_ESSID_MAX_SIZE - network->ssid_len); 1676 1677 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", 1678 network->ssid, network->ssid_len); 1679 break; 1680 1681 case MFIE_TYPE_RATES: 1682#ifdef CONFIG_IEEE80211_DEBUG 1683 p = rates_str; 1684#endif 1685 network->rates_len = min(info_element->len, 1686 MAX_RATES_LENGTH); 1687 for (i = 0; i < network->rates_len; i++) { 1688 network->rates[i] = info_element->data[i]; 1689#ifdef CONFIG_IEEE80211_DEBUG 1690 p += snprintf(p, sizeof(rates_str) - 1691 (p - rates_str), "%02X ", 1692 network->rates[i]); 1693#endif 1694 if (ieee80211_is_ofdm_rate 1695 (info_element->data[i])) { 1696 network->flags |= NETWORK_HAS_OFDM; 1697 if (info_element->data[i] & 1698 IEEE80211_BASIC_RATE_MASK) 1699 network->flags &= 1700 ~NETWORK_HAS_CCK; 1701 } 1702 } 1703 1704 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", 1705 rates_str, network->rates_len); 1706 break; 1707 1708 case MFIE_TYPE_RATES_EX: 1709#ifdef CONFIG_IEEE80211_DEBUG 1710 p = rates_str; 1711#endif 1712 network->rates_ex_len = min(info_element->len, 1713 MAX_RATES_EX_LENGTH); 1714 for (i = 0; i < network->rates_ex_len; i++) { 1715 network->rates_ex[i] = info_element->data[i]; 1716#ifdef CONFIG_IEEE80211_DEBUG 1717 p += snprintf(p, sizeof(rates_str) - 1718 (p - rates_str), "%02X ", 1719 network->rates[i]); 1720#endif 1721 if (ieee80211_is_ofdm_rate 1722 (info_element->data[i])) { 1723 network->flags |= NETWORK_HAS_OFDM; 1724 if (info_element->data[i] & 1725 IEEE80211_BASIC_RATE_MASK) 1726 network->flags &= 1727 ~NETWORK_HAS_CCK; 1728 } 1729 } 1730 1731 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", 1732 rates_str, network->rates_ex_len); 1733 break; 1734 1735 case MFIE_TYPE_DS_SET: 1736 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", 1737 info_element->data[0]); 1738 network->channel = info_element->data[0]; 1739 break; 1740 1741 case MFIE_TYPE_FH_SET: 1742 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); 1743 break; 1744 1745 case MFIE_TYPE_CF_SET: 1746 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); 1747 break; 1748 1749 case MFIE_TYPE_TIM: 1750 if(info_element->len < 4) 1751 break; 1752 1753 network->tim.tim_count = info_element->data[0]; 1754 network->tim.tim_period = info_element->data[1]; 1755 1756 network->dtim_period = info_element->data[1]; 1757 if(ieee->state != IEEE80211_LINKED) 1758 break; 1759 1760 network->last_dtim_sta_time[0] = stats->mac_time[0]; 1761 network->last_dtim_sta_time[1] = stats->mac_time[1]; 1762 1763 network->dtim_data = IEEE80211_DTIM_VALID; 1764 1765 if(info_element->data[0] != 0) 1766 break; 1767 1768 if(info_element->data[2] & 1) 1769 network->dtim_data |= IEEE80211_DTIM_MBCAST; 1770 1771 offset = (info_element->data[2] >> 1)*2; 1772 1773 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id); 1774 1775 if(ieee->assoc_id < 8*offset || 1776 ieee->assoc_id > 8*(offset + info_element->len -3)) 1777 1778 break; 1779 1780 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; 1781 1782 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) 1783 network->dtim_data |= IEEE80211_DTIM_UCAST; 1784 1785 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); 1786 break; 1787 1788 case MFIE_TYPE_ERP: 1789 network->erp_value = info_element->data[0]; 1790 network->flags |= NETWORK_HAS_ERP_VALUE; 1791 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", 1792 network->erp_value); 1793 break; 1794 case MFIE_TYPE_IBSS_SET: 1795 network->atim_window = info_element->data[0]; 1796 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", 1797 network->atim_window); 1798 break; 1799 1800 case MFIE_TYPE_CHALLENGE: 1801 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); 1802 break; 1803 1804 case MFIE_TYPE_GENERIC: 1805 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", 1806 info_element->len); 1807 if (!ieee80211_parse_qos_info_param_IE(info_element, 1808 network)) 1809 break; 1810 1811 if (info_element->len >= 4 && 1812 info_element->data[0] == 0x00 && 1813 info_element->data[1] == 0x50 && 1814 info_element->data[2] == 0xf2 && 1815 info_element->data[3] == 0x01) { 1816 network->wpa_ie_len = min(info_element->len + 2, 1817 MAX_WPA_IE_LEN); 1818 memcpy(network->wpa_ie, info_element, 1819 network->wpa_ie_len); 1820 break; 1821 } 1822 1823#ifdef THOMAS_TURBO 1824 if (info_element->len == 7 && 1825 info_element->data[0] == 0x00 && 1826 info_element->data[1] == 0xe0 && 1827 info_element->data[2] == 0x4c && 1828 info_element->data[3] == 0x01 && 1829 info_element->data[4] == 0x02) { 1830 network->Turbo_Enable = 1; 1831 } 1832#endif 1833 1834 //for HTcap and HTinfo parameters 1835 if(tmp_htcap_len == 0){ 1836 if(info_element->len >= 4 && 1837 info_element->data[0] == 0x00 && 1838 info_element->data[1] == 0x90 && 1839 info_element->data[2] == 0x4c && 1840 info_element->data[3] == 0x033){ 1841 1842 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 1843 if(tmp_htcap_len != 0){ 1844 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1845 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 1846 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 1847 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 1848 } 1849 } 1850 if(tmp_htcap_len != 0) 1851 network->bssht.bdSupportHT = true; 1852 else 1853 network->bssht.bdSupportHT = false; 1854 } 1855 1856 1857 if(tmp_htinfo_len == 0){ 1858 if(info_element->len >= 4 && 1859 info_element->data[0] == 0x00 && 1860 info_element->data[1] == 0x90 && 1861 info_element->data[2] == 0x4c && 1862 info_element->data[3] == 0x034){ 1863 1864 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 1865 if(tmp_htinfo_len != 0){ 1866 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1867 if(tmp_htinfo_len){ 1868 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 1869 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 1870 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 1871 } 1872 1873 } 1874 1875 } 1876 } 1877 1878 if(ieee->aggregation){ 1879 if(network->bssht.bdSupportHT){ 1880 if(info_element->len >= 4 && 1881 info_element->data[0] == 0x00 && 1882 info_element->data[1] == 0xe0 && 1883 info_element->data[2] == 0x4c && 1884 info_element->data[3] == 0x02){ 1885 1886 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); 1887 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); 1888 1889 } 1890 if(ht_realtek_agg_len >= 5){ 1891 network->bssht.bdRT2RTAggregation = true; 1892 1893 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) 1894 network->bssht.bdRT2RTLongSlotTime = true; 1895 } 1896 } 1897 1898 } 1899 1900 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) 1901 { 1902 if((info_element->len >= 3 && 1903 info_element->data[0] == 0x00 && 1904 info_element->data[1] == 0x05 && 1905 info_element->data[2] == 0xb5) || 1906 (info_element->len >= 3 && 1907 info_element->data[0] == 0x00 && 1908 info_element->data[1] == 0x0a && 1909 info_element->data[2] == 0xf7) || 1910 (info_element->len >= 3 && 1911 info_element->data[0] == 0x00 && 1912 info_element->data[1] == 0x10 && 1913 info_element->data[2] == 0x18)){ 1914 1915 network->broadcom_cap_exist = true; 1916 1917 } 1918 } 1919 if(info_element->len >= 3 && 1920 info_element->data[0] == 0x00 && 1921 info_element->data[1] == 0x0c && 1922 info_element->data[2] == 0x43) 1923 { 1924 network->ralink_cap_exist = true; 1925 } 1926 else 1927 network->ralink_cap_exist = false; 1928 //added by amy for atheros AP 1929 if((info_element->len >= 3 && 1930 info_element->data[0] == 0x00 && 1931 info_element->data[1] == 0x03 && 1932 info_element->data[2] == 0x7f) || 1933 (info_element->len >= 3 && 1934 info_element->data[0] == 0x00 && 1935 info_element->data[1] == 0x13 && 1936 info_element->data[2] == 0x74)) 1937 { 1938 printk("========>%s(): athros AP is exist\n",__FUNCTION__); 1939 network->atheros_cap_exist = true; 1940 } 1941 else 1942 network->atheros_cap_exist = false; 1943 1944 if(info_element->len >= 3 && 1945 info_element->data[0] == 0x00 && 1946 info_element->data[1] == 0x40 && 1947 info_element->data[2] == 0x96) 1948 { 1949 network->cisco_cap_exist = true; 1950 } 1951 else 1952 network->cisco_cap_exist = false; 1953 //added by amy for LEAP of cisco 1954 if(info_element->len > 4 && 1955 info_element->data[0] == 0x00 && 1956 info_element->data[1] == 0x40 && 1957 info_element->data[2] == 0x96 && 1958 info_element->data[3] == 0x01) 1959 { 1960 if(info_element->len == 6) 1961 { 1962 memcpy(network->CcxRmState, &info_element[4], 2); 1963 if(network->CcxRmState[0] != 0) 1964 { 1965 network->bCcxRmEnable = true; 1966 } 1967 else 1968 network->bCcxRmEnable = false; 1969 // 1970 // CCXv4 Table 59-1 MBSSID Masks. 1971 // 1972 network->MBssidMask = network->CcxRmState[1] & 0x07; 1973 if(network->MBssidMask != 0) 1974 { 1975 network->bMBssidValid = true; 1976 network->MBssidMask = 0xff << (network->MBssidMask); 1977 cpMacAddr(network->MBssid, network->bssid); 1978 network->MBssid[5] &= network->MBssidMask; 1979 } 1980 else 1981 { 1982 network->bMBssidValid = false; 1983 } 1984 } 1985 else 1986 { 1987 network->bCcxRmEnable = false; 1988 } 1989 } 1990 if(info_element->len > 4 && 1991 info_element->data[0] == 0x00 && 1992 info_element->data[1] == 0x40 && 1993 info_element->data[2] == 0x96 && 1994 info_element->data[3] == 0x03) 1995 { 1996 if(info_element->len == 5) 1997 { 1998 network->bWithCcxVerNum = true; 1999 network->BssCcxVerNumber = info_element->data[4]; 2000 } 2001 else 2002 { 2003 network->bWithCcxVerNum = false; 2004 network->BssCcxVerNumber = 0; 2005 } 2006 } 2007 break; 2008 2009 case MFIE_TYPE_RSN: 2010 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", 2011 info_element->len); 2012 network->rsn_ie_len = min(info_element->len + 2, 2013 MAX_WPA_IE_LEN); 2014 memcpy(network->rsn_ie, info_element, 2015 network->rsn_ie_len); 2016 break; 2017 2018 //HT related element. 2019 case MFIE_TYPE_HT_CAP: 2020 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", 2021 info_element->len); 2022 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 2023 if(tmp_htcap_len != 0){ 2024 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 2025 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 2026 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 2027 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 2028 2029 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() 2030 // windows driver will update WMM parameters each beacon received once connected 2031 // Linux driver is a bit different. 2032 network->bssht.bdSupportHT = true; 2033 } 2034 else 2035 network->bssht.bdSupportHT = false; 2036 break; 2037 2038 2039 case MFIE_TYPE_HT_INFO: 2040 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", 2041 info_element->len); 2042 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 2043 if(tmp_htinfo_len){ 2044 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; 2045 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 2046 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 2047 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 2048 } 2049 break; 2050 2051 case MFIE_TYPE_AIRONET: 2052 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", 2053 info_element->len); 2054 if(info_element->len >IE_CISCO_FLAG_POSITION) 2055 { 2056 network->bWithAironetIE = true; 2057 2058 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): 2059 // "A Cisco access point advertises support for CKIP in beacon and probe response packets, 2060 // by adding an Aironet element and setting one or both of the CKIP negotiation bits." 2061 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || 2062 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) 2063 { 2064 network->bCkipSupported = true; 2065 } 2066 else 2067 { 2068 network->bCkipSupported = false; 2069 } 2070 } 2071 else 2072 { 2073 network->bWithAironetIE = false; 2074 network->bCkipSupported = false; 2075 } 2076 break; 2077 case MFIE_TYPE_QOS_PARAMETER: 2078 printk(KERN_ERR 2079 "QoS Error need to parse QOS_PARAMETER IE\n"); 2080 break; 2081 2082 case MFIE_TYPE_COUNTRY: 2083 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", 2084 info_element->len); 2085 //printk("=====>Receive <%s> Country IE\n",network->ssid); 2086 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP 2087 break; 2088/* TODO */ 2089 default: 2090 IEEE80211_DEBUG_MGMT 2091 ("Unsupported info element: %s (%d)\n", 2092 get_info_element_string(info_element->id), 2093 info_element->id); 2094 break; 2095 } 2096 2097 length -= sizeof(*info_element) + info_element->len; 2098 info_element = 2099 (struct ieee80211_info_element *)&info_element-> 2100 data[info_element->len]; 2101 } 2102 2103 if(!network->atheros_cap_exist && !network->broadcom_cap_exist && 2104 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) 2105 { 2106 network->unknown_cap_exist = true; 2107 } 2108 else 2109 { 2110 network->unknown_cap_exist = false; 2111 } 2112 return 0; 2113} 2114 2115static inline u8 ieee80211_SignalStrengthTranslate( 2116 u8 CurrSS 2117 ) 2118{ 2119 u8 RetSS; 2120 2121 // Step 1. Scale mapping. 2122 if(CurrSS >= 71 && CurrSS <= 100) 2123 { 2124 RetSS = 90 + ((CurrSS - 70) / 3); 2125 } 2126 else if(CurrSS >= 41 && CurrSS <= 70) 2127 { 2128 RetSS = 78 + ((CurrSS - 40) / 3); 2129 } 2130 else if(CurrSS >= 31 && CurrSS <= 40) 2131 { 2132 RetSS = 66 + (CurrSS - 30); 2133 } 2134 else if(CurrSS >= 21 && CurrSS <= 30) 2135 { 2136 RetSS = 54 + (CurrSS - 20); 2137 } 2138 else if(CurrSS >= 5 && CurrSS <= 20) 2139 { 2140 RetSS = 42 + (((CurrSS - 5) * 2) / 3); 2141 } 2142 else if(CurrSS == 4) 2143 { 2144 RetSS = 36; 2145 } 2146 else if(CurrSS == 3) 2147 { 2148 RetSS = 27; 2149 } 2150 else if(CurrSS == 2) 2151 { 2152 RetSS = 18; 2153 } 2154 else if(CurrSS == 1) 2155 { 2156 RetSS = 9; 2157 } 2158 else 2159 { 2160 RetSS = CurrSS; 2161 } 2162 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2163 2164 // Step 2. Smoothing. 2165 2166 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2167 2168 return RetSS; 2169} 2170 2171long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index. 2172{ 2173 long signal_power; // in dBm. 2174 2175 // Translate to dBm (x=0.5y-95). 2176 signal_power = (long)((signal_strength_index + 1) >> 1); 2177 signal_power -= 95; 2178 2179 return signal_power; 2180} 2181 2182static inline int ieee80211_network_init( 2183 struct ieee80211_device *ieee, 2184 struct ieee80211_probe_response *beacon, 2185 struct ieee80211_network *network, 2186 struct ieee80211_rx_stats *stats) 2187{ 2188#ifdef CONFIG_IEEE80211_DEBUG 2189 //char rates_str[64]; 2190 //char *p; 2191#endif 2192 2193 network->qos_data.active = 0; 2194 network->qos_data.supported = 0; 2195 network->qos_data.param_count = 0; 2196 network->qos_data.old_param_count = 0; 2197 2198 /* Pull out fixed field data */ 2199 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); 2200 network->capability = le16_to_cpu(beacon->capability); 2201 network->last_scanned = jiffies; 2202 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); 2203 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); 2204 network->beacon_interval = le32_to_cpu(beacon->beacon_interval); 2205 /* Where to pull this? beacon->listen_interval;*/ 2206 network->listen_interval = 0x0A; 2207 network->rates_len = network->rates_ex_len = 0; 2208 network->last_associate = 0; 2209 network->ssid_len = 0; 2210 network->flags = 0; 2211 network->atim_window = 0; 2212 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? 2213 0x3 : 0x0; 2214 network->berp_info_valid = false; 2215 network->broadcom_cap_exist = false; 2216 network->ralink_cap_exist = false; 2217 network->atheros_cap_exist = false; 2218 network->cisco_cap_exist = false; 2219 network->unknown_cap_exist = false; 2220#ifdef THOMAS_TURBO 2221 network->Turbo_Enable = 0; 2222#endif 2223 network->CountryIeLen = 0; 2224 memset(network->CountryIeBuf, 0, MAX_IE_LEN); 2225//Initialize HT parameters 2226 //ieee80211_ht_initialize(&network->bssht); 2227 HTInitializeBssDesc(&network->bssht); 2228 if (stats->freq == IEEE80211_52GHZ_BAND) { 2229 /* for A band (No DS info) */ 2230 network->channel = stats->received_channel; 2231 } else 2232 network->flags |= NETWORK_HAS_CCK; 2233 2234 network->wpa_ie_len = 0; 2235 network->rsn_ie_len = 0; 2236 2237 if (ieee80211_parse_info_param 2238 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) 2239 return 1; 2240 2241 network->mode = 0; 2242 if (stats->freq == IEEE80211_52GHZ_BAND) 2243 network->mode = IEEE_A; 2244 else { 2245 if (network->flags & NETWORK_HAS_OFDM) 2246 network->mode |= IEEE_G; 2247 if (network->flags & NETWORK_HAS_CCK) 2248 network->mode |= IEEE_B; 2249 } 2250 2251 if (network->mode == 0) { 2252 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' " 2253 "network.\n", 2254 escape_essid(network->ssid, 2255 network->ssid_len), 2256 network->bssid); 2257 return 1; 2258 } 2259 2260 if(network->bssht.bdSupportHT){ 2261 if(network->mode == IEEE_A) 2262 network->mode = IEEE_N_5G; 2263 else if(network->mode & (IEEE_G | IEEE_B)) 2264 network->mode = IEEE_N_24G; 2265 } 2266 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) 2267 network->flags |= NETWORK_EMPTY_ESSID; 2268 2269 stats->signal = 30 + (stats->SignalStrength * 70) / 100; 2270 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); 2271 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; 2272 2273 memcpy(&network->stats, stats, sizeof(network->stats)); 2274 2275 return 0; 2276} 2277 2278static inline int is_same_network(struct ieee80211_network *src, 2279 struct ieee80211_network *dst, struct ieee80211_device* ieee) 2280{ 2281 /* A network is only a duplicate if the channel, BSSID, ESSID 2282 * and the capability field (in particular IBSS and BSS) all match. 2283 * We treat all <hidden> with the same BSSID and channel 2284 * as one network */ 2285 return //((src->ssid_len == dst->ssid_len) && 2286 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2287 (src->channel == dst->channel) && 2288 !memcmp(src->bssid, dst->bssid, ETH_ALEN) && 2289 //!memcmp(src->ssid, dst->ssid, src->ssid_len) && 2290 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2291 ((src->capability & WLAN_CAPABILITY_IBSS) == 2292 (dst->capability & WLAN_CAPABILITY_IBSS)) && 2293 ((src->capability & WLAN_CAPABILITY_BSS) == 2294 (dst->capability & WLAN_CAPABILITY_BSS))); 2295} 2296 2297static inline void update_network(struct ieee80211_network *dst, 2298 struct ieee80211_network *src) 2299{ 2300 int qos_active; 2301 u8 old_param; 2302 2303 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); 2304 dst->capability = src->capability; 2305 memcpy(dst->rates, src->rates, src->rates_len); 2306 dst->rates_len = src->rates_len; 2307 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); 2308 dst->rates_ex_len = src->rates_ex_len; 2309 if(src->ssid_len > 0) 2310 { 2311 memset(dst->ssid, 0, dst->ssid_len); 2312 dst->ssid_len = src->ssid_len; 2313 memcpy(dst->ssid, src->ssid, src->ssid_len); 2314 } 2315 dst->mode = src->mode; 2316 dst->flags = src->flags; 2317 dst->time_stamp[0] = src->time_stamp[0]; 2318 dst->time_stamp[1] = src->time_stamp[1]; 2319 if (src->flags & NETWORK_HAS_ERP_VALUE) 2320 { 2321 dst->erp_value = src->erp_value; 2322 dst->berp_info_valid = src->berp_info_valid = true; 2323 } 2324 dst->beacon_interval = src->beacon_interval; 2325 dst->listen_interval = src->listen_interval; 2326 dst->atim_window = src->atim_window; 2327 dst->dtim_period = src->dtim_period; 2328 dst->dtim_data = src->dtim_data; 2329 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; 2330 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; 2331 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); 2332 2333 dst->bssht.bdSupportHT = src->bssht.bdSupportHT; 2334 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; 2335 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; 2336 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); 2337 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; 2338 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); 2339 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; 2340 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; 2341 dst->broadcom_cap_exist = src->broadcom_cap_exist; 2342 dst->ralink_cap_exist = src->ralink_cap_exist; 2343 dst->atheros_cap_exist = src->atheros_cap_exist; 2344 dst->cisco_cap_exist = src->cisco_cap_exist; 2345 dst->unknown_cap_exist = src->unknown_cap_exist; 2346 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); 2347 dst->wpa_ie_len = src->wpa_ie_len; 2348 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); 2349 dst->rsn_ie_len = src->rsn_ie_len; 2350 2351 dst->last_scanned = jiffies; 2352 /* qos related parameters */ 2353 //qos_active = src->qos_data.active; 2354 qos_active = dst->qos_data.active; 2355 //old_param = dst->qos_data.old_param_count; 2356 old_param = dst->qos_data.param_count; 2357 if(dst->flags & NETWORK_HAS_QOS_MASK) 2358 memcpy(&dst->qos_data, &src->qos_data, 2359 sizeof(struct ieee80211_qos_data)); 2360 else { 2361 dst->qos_data.supported = src->qos_data.supported; 2362 dst->qos_data.param_count = src->qos_data.param_count; 2363 } 2364 2365 if(dst->qos_data.supported == 1) { 2366 dst->QoS_Enable = 1; 2367 if(dst->ssid_len) 2368 IEEE80211_DEBUG_QOS 2369 ("QoS the network %s is QoS supported\n", 2370 dst->ssid); 2371 else 2372 IEEE80211_DEBUG_QOS 2373 ("QoS the network is QoS supported\n"); 2374 } 2375 dst->qos_data.active = qos_active; 2376 dst->qos_data.old_param_count = old_param; 2377 2378 /* dst->last_associate is not overwritten */ 2379 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. 2380 if(src->wmm_param[0].ac_aci_acm_aifsn|| \ 2381 src->wmm_param[1].ac_aci_acm_aifsn|| \ 2382 src->wmm_param[2].ac_aci_acm_aifsn|| \ 2383 src->wmm_param[3].ac_aci_acm_aifsn) { 2384 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); 2385 } 2386 //dst->QoS_Enable = src->QoS_Enable; 2387#ifdef THOMAS_TURBO 2388 dst->Turbo_Enable = src->Turbo_Enable; 2389#endif 2390 2391 dst->CountryIeLen = src->CountryIeLen; 2392 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); 2393 2394 //added by amy for LEAP 2395 dst->bWithAironetIE = src->bWithAironetIE; 2396 dst->bCkipSupported = src->bCkipSupported; 2397 memcpy(dst->CcxRmState,src->CcxRmState,2); 2398 dst->bCcxRmEnable = src->bCcxRmEnable; 2399 dst->MBssidMask = src->MBssidMask; 2400 dst->bMBssidValid = src->bMBssidValid; 2401 memcpy(dst->MBssid,src->MBssid,6); 2402 dst->bWithCcxVerNum = src->bWithCcxVerNum; 2403 dst->BssCcxVerNumber = src->BssCcxVerNumber; 2404 2405} 2406 2407static inline int is_beacon(__le16 fc) 2408{ 2409 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); 2410} 2411 2412static inline void ieee80211_process_probe_response( 2413 struct ieee80211_device *ieee, 2414 struct ieee80211_probe_response *beacon, 2415 struct ieee80211_rx_stats *stats) 2416{ 2417 struct ieee80211_network network; 2418 struct ieee80211_network *target; 2419 struct ieee80211_network *oldest = NULL; 2420#ifdef CONFIG_IEEE80211_DEBUG 2421 struct ieee80211_info_element *info_element = &beacon->info_element[0]; 2422#endif 2423 unsigned long flags; 2424 short renew; 2425 //u8 wmm_info; 2426 2427 memset(&network, 0, sizeof(struct ieee80211_network)); 2428 IEEE80211_DEBUG_SCAN( 2429 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", 2430 escape_essid(info_element->data, info_element->len), 2431 beacon->header.addr3, 2432 (beacon->capability & (1<<0xf)) ? '1' : '0', 2433 (beacon->capability & (1<<0xe)) ? '1' : '0', 2434 (beacon->capability & (1<<0xd)) ? '1' : '0', 2435 (beacon->capability & (1<<0xc)) ? '1' : '0', 2436 (beacon->capability & (1<<0xb)) ? '1' : '0', 2437 (beacon->capability & (1<<0xa)) ? '1' : '0', 2438 (beacon->capability & (1<<0x9)) ? '1' : '0', 2439 (beacon->capability & (1<<0x8)) ? '1' : '0', 2440 (beacon->capability & (1<<0x7)) ? '1' : '0', 2441 (beacon->capability & (1<<0x6)) ? '1' : '0', 2442 (beacon->capability & (1<<0x5)) ? '1' : '0', 2443 (beacon->capability & (1<<0x4)) ? '1' : '0', 2444 (beacon->capability & (1<<0x3)) ? '1' : '0', 2445 (beacon->capability & (1<<0x2)) ? '1' : '0', 2446 (beacon->capability & (1<<0x1)) ? '1' : '0', 2447 (beacon->capability & (1<<0x0)) ? '1' : '0'); 2448 2449 if (ieee80211_network_init(ieee, beacon, &network, stats)) { 2450 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n", 2451 escape_essid(info_element->data, 2452 info_element->len), 2453 beacon->header.addr3, 2454 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2455 IEEE80211_STYPE_PROBE_RESP ? 2456 "PROBE RESPONSE" : "BEACON"); 2457 return; 2458 } 2459 2460 // For Asus EeePc request, 2461 // (1) if wireless adapter receive get any 802.11d country code in AP beacon, 2462 // wireless adapter should follow the country code. 2463 // (2) If there is no any country code in beacon, 2464 // then wireless adapter should do active scan from ch1~11 and 2465 // passive scan from ch12~14 2466 2467 if( !IsLegalChannel(ieee, network.channel) ) 2468 return; 2469 if(ieee->bGlobalDomain) 2470 { 2471 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) 2472 { 2473 // Case 1: Country code 2474 if(IS_COUNTRY_IE_VALID(ieee) ) 2475 { 2476 if( !IsLegalChannel(ieee, network.channel) ) 2477 { 2478 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); 2479 return; 2480 } 2481 } 2482 // Case 2: No any country code. 2483 else 2484 { 2485 // Filter over channel ch12~14 2486 if(network.channel > 11) 2487 { 2488 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); 2489 return; 2490 } 2491 } 2492 } 2493 else 2494 { 2495 // Case 1: Country code 2496 if(IS_COUNTRY_IE_VALID(ieee) ) 2497 { 2498 if( !IsLegalChannel(ieee, network.channel) ) 2499 { 2500 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); 2501 return; 2502 } 2503 } 2504 // Case 2: No any country code. 2505 else 2506 { 2507 // Filter over channel ch12~14 2508 if(network.channel > 14) 2509 { 2510 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); 2511 return; 2512 } 2513 } 2514 } 2515 } 2516 2517 /* The network parsed correctly -- so now we scan our known networks 2518 * to see if we can find it in our list. 2519 * 2520 * NOTE: This search is definitely not optimized. Once its doing 2521 * the "right thing" we'll optimize it for efficiency if 2522 * necessary */ 2523 2524 /* Search for this entry in the list and update it if it is 2525 * already there. */ 2526 2527 spin_lock_irqsave(&ieee->lock, flags); 2528 2529 if(is_same_network(&ieee->current_network, &network, ieee)) { 2530 update_network(&ieee->current_network, &network); 2531 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) 2532 && ieee->current_network.berp_info_valid){ 2533 if(ieee->current_network.erp_value& ERP_UseProtection) 2534 ieee->current_network.buseprotection = true; 2535 else 2536 ieee->current_network.buseprotection = false; 2537 } 2538 if(is_beacon(beacon->header.frame_ctl)) 2539 { 2540 if(ieee->state == IEEE80211_LINKED) 2541 ieee->LinkDetectInfo.NumRecvBcnInPeriod++; 2542 } 2543 else //hidden AP 2544 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); 2545 } 2546 2547 list_for_each_entry(target, &ieee->network_list, list) { 2548 if (is_same_network(target, &network, ieee)) 2549 break; 2550 if ((oldest == NULL) || 2551 (target->last_scanned < oldest->last_scanned)) 2552 oldest = target; 2553 } 2554 2555 /* If we didn't find a match, then get a new network slot to initialize 2556 * with this beacon's information */ 2557 if (&target->list == &ieee->network_list) { 2558 if (list_empty(&ieee->network_free_list)) { 2559 /* If there are no more slots, expire the oldest */ 2560 list_del(&oldest->list); 2561 target = oldest; 2562 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from " 2563 "network list.\n", 2564 escape_essid(target->ssid, 2565 target->ssid_len), 2566 target->bssid); 2567 } else { 2568 /* Otherwise just pull from the free list */ 2569 target = list_entry(ieee->network_free_list.next, 2570 struct ieee80211_network, list); 2571 list_del(ieee->network_free_list.next); 2572 } 2573 2574 2575#ifdef CONFIG_IEEE80211_DEBUG 2576 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n", 2577 escape_essid(network.ssid, 2578 network.ssid_len), 2579 network.bssid, 2580 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2581 IEEE80211_STYPE_PROBE_RESP ? 2582 "PROBE RESPONSE" : "BEACON"); 2583#endif 2584 memcpy(target, &network, sizeof(*target)); 2585 list_add_tail(&target->list, &ieee->network_list); 2586 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) 2587 ieee80211_softmac_new_net(ieee,&network); 2588 } else { 2589 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n", 2590 escape_essid(target->ssid, 2591 target->ssid_len), 2592 target->bssid, 2593 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2594 IEEE80211_STYPE_PROBE_RESP ? 2595 "PROBE RESPONSE" : "BEACON"); 2596 2597 /* we have an entry and we are going to update it. But this entry may 2598 * be already expired. In this case we do the same as we found a new 2599 * net and call the new_net handler 2600 */ 2601 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); 2602 //YJ,add,080819,for hidden ap 2603 if(is_beacon(beacon->header.frame_ctl) == 0) 2604 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); 2605 //if(strncmp(network.ssid, "linksys-c",9) == 0) 2606 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); 2607 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ 2608 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ 2609 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) 2610 renew = 1; 2611 //YJ,add,080819,for hidden ap,end 2612 2613 update_network(target, &network); 2614 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) 2615 ieee80211_softmac_new_net(ieee,&network); 2616 } 2617 2618 spin_unlock_irqrestore(&ieee->lock, flags); 2619 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ 2620 (ieee->state == IEEE80211_LINKED)) { 2621 if(ieee->handle_beacon != NULL) { 2622 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); 2623 } 2624 } 2625} 2626 2627void ieee80211_rx_mgt(struct ieee80211_device *ieee, 2628 struct ieee80211_hdr_4addr *header, 2629 struct ieee80211_rx_stats *stats) 2630{ 2631 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 2632 2633 case IEEE80211_STYPE_BEACON: 2634 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", 2635 WLAN_FC_GET_STYPE(header->frame_ctl)); 2636 IEEE80211_DEBUG_SCAN("Beacon\n"); 2637 ieee80211_process_probe_response( 2638 ieee, (struct ieee80211_probe_response *)header, stats); 2639 break; 2640 2641 case IEEE80211_STYPE_PROBE_RESP: 2642 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", 2643 WLAN_FC_GET_STYPE(header->frame_ctl)); 2644 IEEE80211_DEBUG_SCAN("Probe response\n"); 2645 ieee80211_process_probe_response( 2646 ieee, (struct ieee80211_probe_response *)header, stats); 2647 break; 2648 2649 } 2650} 2651 2652EXPORT_SYMBOL(ieee80211_rx_mgt); 2653EXPORT_SYMBOL(ieee80211_rx); 2654