ieee80211_rx.c revision 324148788bf3744d90fb6894ec5744eb0ca91b74
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#ifdef ENABLE_DOT11D 48#include "dot11d.h" 49#endif 50static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, 51 struct sk_buff *skb, 52 struct ieee80211_rx_stats *rx_stats) 53{ 54 struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data; 55 u16 fc = le16_to_cpu(hdr->frame_ctl); 56 57 skb->dev = ieee->dev; 58 skb_reset_mac_header(skb); 59 60 skb_pull(skb, ieee80211_get_hdrlen(fc)); 61 skb->pkt_type = PACKET_OTHERHOST; 62 skb->protocol = __constant_htons(ETH_P_80211_RAW); 63 memset(skb->cb, 0, sizeof(skb->cb)); 64 netif_rx(skb); 65} 66 67 68/* Called only as a tasklet (software IRQ) */ 69static struct ieee80211_frag_entry * 70ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, 71 unsigned int frag, u8 tid,u8 *src, u8 *dst) 72{ 73 struct ieee80211_frag_entry *entry; 74 int i; 75 76 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { 77 entry = &ieee->frag_cache[tid][i]; 78 if (entry->skb != NULL && 79 time_after(jiffies, entry->first_frag_time + 2 * HZ)) { 80 IEEE80211_DEBUG_FRAG( 81 "expiring fragment cache entry " 82 "seq=%u last_frag=%u\n", 83 entry->seq, entry->last_frag); 84 dev_kfree_skb_any(entry->skb); 85 entry->skb = NULL; 86 } 87 88 if (entry->skb != NULL && entry->seq == seq && 89 (entry->last_frag + 1 == frag || frag == -1) && 90 memcmp(entry->src_addr, src, ETH_ALEN) == 0 && 91 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) 92 return entry; 93 } 94 95 return NULL; 96} 97 98/* Called only as a tasklet (software IRQ) */ 99static struct sk_buff * 100ieee80211_frag_cache_get(struct ieee80211_device *ieee, 101 struct ieee80211_hdr_4addr *hdr) 102{ 103 struct sk_buff *skb = NULL; 104 u16 fc = le16_to_cpu(hdr->frame_ctl); 105 u16 sc = le16_to_cpu(hdr->seq_ctl); 106 unsigned int frag = WLAN_GET_SEQ_FRAG(sc); 107 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 108 struct ieee80211_frag_entry *entry; 109 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 110 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 111 u8 tid; 112 113 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 114 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; 115 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 116 tid = UP2AC(tid); 117 tid ++; 118 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 119 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; 120 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 121 tid = UP2AC(tid); 122 tid ++; 123 } else { 124 tid = 0; 125 } 126 127 if (frag == 0) { 128 /* Reserve enough space to fit maximum frame length */ 129 skb = dev_alloc_skb(ieee->dev->mtu + 130 sizeof(struct ieee80211_hdr_4addr) + 131 8 /* LLC */ + 132 2 /* alignment */ + 133 8 /* WEP */ + 134 ETH_ALEN /* WDS */ + 135 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); 136 if (skb == NULL) 137 return NULL; 138 139 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; 140 ieee->frag_next_idx[tid]++; 141 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) 142 ieee->frag_next_idx[tid] = 0; 143 144 if (entry->skb != NULL) 145 dev_kfree_skb_any(entry->skb); 146 147 entry->first_frag_time = jiffies; 148 entry->seq = seq; 149 entry->last_frag = frag; 150 entry->skb = skb; 151 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); 152 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); 153 } else { 154 /* received a fragment of a frame for which the head fragment 155 * should have already been received */ 156 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, 157 hdr->addr1); 158 if (entry != NULL) { 159 entry->last_frag = frag; 160 skb = entry->skb; 161 } 162 } 163 164 return skb; 165} 166 167 168/* Called only as a tasklet (software IRQ) */ 169static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, 170 struct ieee80211_hdr_4addr *hdr) 171{ 172 u16 fc = le16_to_cpu(hdr->frame_ctl); 173 u16 sc = le16_to_cpu(hdr->seq_ctl); 174 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 175 struct ieee80211_frag_entry *entry; 176 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 177 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 178 u8 tid; 179 180 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 181 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; 182 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 183 tid = UP2AC(tid); 184 tid ++; 185 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 186 hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; 187 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 188 tid = UP2AC(tid); 189 tid ++; 190 } else { 191 tid = 0; 192 } 193 194 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2, 195 hdr->addr1); 196 197 if (entry == NULL) { 198 IEEE80211_DEBUG_FRAG( 199 "could not invalidate fragment cache " 200 "entry (seq=%u)\n", seq); 201 return -1; 202 } 203 204 entry->skb = NULL; 205 return 0; 206} 207 208 209 210/* ieee80211_rx_frame_mgtmt 211 * 212 * Responsible for handling management control frames 213 * 214 * Called by ieee80211_rx */ 215static inline int 216ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, 217 struct ieee80211_rx_stats *rx_stats, u16 type, 218 u16 stype) 219{ 220 /* On the struct stats definition there is written that 221 * this is not mandatory.... but seems that the probe 222 * response parser uses it 223 */ 224 struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data; 225 226 rx_stats->len = skb->len; 227 ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats); 228 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) 229 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames 230 { 231 dev_kfree_skb_any(skb); 232 return 0; 233 } 234 235 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); 236 237 dev_kfree_skb_any(skb); 238 239 return 0; 240 241 #ifdef NOT_YET 242 if (ieee->iw_mode == IW_MODE_MASTER) { 243 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n", 244 ieee->dev->name); 245 return 0; 246/* 247 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) 248 skb->data);*/ 249 } 250 251 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) { 252 if (stype == WLAN_FC_STYPE_BEACON && 253 ieee->iw_mode == IW_MODE_MASTER) { 254 struct sk_buff *skb2; 255 /* Process beacon frames also in kernel driver to 256 * update STA(AP) table statistics */ 257 skb2 = skb_clone(skb, GFP_ATOMIC); 258 if (skb2) 259 hostap_rx(skb2->dev, skb2, rx_stats); 260 } 261 262 /* send management frames to the user space daemon for 263 * processing */ 264 ieee->apdevstats.rx_packets++; 265 ieee->apdevstats.rx_bytes += skb->len; 266 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); 267 return 0; 268 } 269 270 if (ieee->iw_mode == IW_MODE_MASTER) { 271 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { 272 printk(KERN_DEBUG "%s: unknown management frame " 273 "(type=0x%02x, stype=0x%02x) dropped\n", 274 skb->dev->name, type, stype); 275 return -1; 276 } 277 278 hostap_rx(skb->dev, skb, rx_stats); 279 return 0; 280 } 281 282 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " 283 "received in non-Host AP mode\n", skb->dev->name); 284 return -1; 285 #endif 286} 287 288 289 290/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ 291/* Ethernet-II snap header (RFC1042 for most EtherTypes) */ 292static unsigned char rfc1042_header[] = 293{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 294/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ 295static unsigned char bridge_tunnel_header[] = 296{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; 297/* No encapsulation header if EtherType < 0x600 (=length) */ 298 299/* Called by ieee80211_rx_frame_decrypt */ 300static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, 301 struct sk_buff *skb, size_t hdrlen) 302{ 303 struct net_device *dev = ieee->dev; 304 u16 fc, ethertype; 305 struct ieee80211_hdr_4addr *hdr; 306 u8 *pos; 307 308 if (skb->len < 24) 309 return 0; 310 311 hdr = (struct ieee80211_hdr_4addr *) skb->data; 312 fc = le16_to_cpu(hdr->frame_ctl); 313 314 /* check that the frame is unicast frame to us */ 315 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 316 IEEE80211_FCTL_TODS && 317 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && 318 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { 319 /* ToDS frame with own addr BSSID and DA */ 320 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 321 IEEE80211_FCTL_FROMDS && 322 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { 323 /* FromDS frame with own addr as DA */ 324 } else 325 return 0; 326 327 if (skb->len < 24 + 8) 328 return 0; 329 330 /* check for port access entity Ethernet type */ 331// pos = skb->data + 24; 332 pos = skb->data + hdrlen; 333 ethertype = (pos[6] << 8) | pos[7]; 334 if (ethertype == ETH_P_PAE) 335 return 1; 336 337 return 0; 338} 339 340/* Called only as a tasklet (software IRQ), by ieee80211_rx */ 341static inline int 342ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb, 343 struct ieee80211_crypt_data *crypt) 344{ 345 struct ieee80211_hdr_4addr *hdr; 346 int res, hdrlen; 347 348 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) 349 return 0; 350 if (ieee->hwsec_active) 351 { 352 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 353 tcb_desc->bHwSec = 1; 354 } 355 hdr = (struct ieee80211_hdr_4addr *) skb->data; 356 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 357 358#ifdef CONFIG_IEEE80211_CRYPT_TKIP 359 if (ieee->tkip_countermeasures && 360 strcmp(crypt->ops->name, "TKIP") == 0) { 361 if (net_ratelimit()) { 362 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " 363 "received packet from %pM\n", 364 ieee->dev->name, hdr->addr2); 365 } 366 return -1; 367 } 368#endif 369 370 atomic_inc(&crypt->refcnt); 371 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); 372 atomic_dec(&crypt->refcnt); 373 if (res < 0) { 374 IEEE80211_DEBUG_DROP( 375 "decryption failed (SA=%pM" 376 ") res=%d\n", hdr->addr2, res); 377 if (res == -2) 378 IEEE80211_DEBUG_DROP("Decryption failed ICV " 379 "mismatch (key %d)\n", 380 skb->data[hdrlen + 3] >> 6); 381 ieee->ieee_stats.rx_discards_undecryptable++; 382 return -1; 383 } 384 385 return res; 386} 387 388 389/* Called only as a tasklet (software IRQ), by ieee80211_rx */ 390static inline int 391ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb, 392 int keyidx, struct ieee80211_crypt_data *crypt) 393{ 394 struct ieee80211_hdr_4addr *hdr; 395 int res, hdrlen; 396 397 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) 398 return 0; 399 if (ieee->hwsec_active) 400 { 401 cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 402 tcb_desc->bHwSec = 1; 403 } 404 405 hdr = (struct ieee80211_hdr_4addr *) skb->data; 406 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 407 408 atomic_inc(&crypt->refcnt); 409 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); 410 atomic_dec(&crypt->refcnt); 411 if (res < 0) { 412 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" 413 " (SA=%pM keyidx=%d)\n", 414 ieee->dev->name, hdr->addr2, keyidx); 415 return -1; 416 } 417 418 return 0; 419} 420 421 422/* this function is stolen from ipw2200 driver*/ 423#define IEEE_PACKET_RETRY_TIME (5*HZ) 424static int is_duplicate_packet(struct ieee80211_device *ieee, 425 struct ieee80211_hdr_4addr *header) 426{ 427 u16 fc = le16_to_cpu(header->frame_ctl); 428 u16 sc = le16_to_cpu(header->seq_ctl); 429 u16 seq = WLAN_GET_SEQ_SEQ(sc); 430 u16 frag = WLAN_GET_SEQ_FRAG(sc); 431 u16 *last_seq, *last_frag; 432 unsigned long *last_time; 433 struct ieee80211_hdr_3addrqos *hdr_3addrqos; 434 struct ieee80211_hdr_4addrqos *hdr_4addrqos; 435 u8 tid; 436 437 438 //TO2DS and QoS 439 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 440 hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header; 441 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 442 tid = UP2AC(tid); 443 tid ++; 444 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS 445 hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header; 446 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 447 tid = UP2AC(tid); 448 tid ++; 449 } else { // no QoS 450 tid = 0; 451 } 452 453 switch (ieee->iw_mode) { 454 case IW_MODE_ADHOC: 455 { 456 struct list_head *p; 457 struct ieee_ibss_seq *entry = NULL; 458 u8 *mac = header->addr2; 459 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; 460 //for (pos = (head)->next; pos != (head); pos = pos->next) 461 //__list_for_each(p, &ieee->ibss_mac_hash[index]) { 462 list_for_each(p, &ieee->ibss_mac_hash[index]) { 463 entry = list_entry(p, struct ieee_ibss_seq, list); 464 if (!memcmp(entry->mac, mac, ETH_ALEN)) 465 break; 466 } 467 // if (memcmp(entry->mac, mac, ETH_ALEN)){ 468 if (p == &ieee->ibss_mac_hash[index]) { 469 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); 470 if (!entry) { 471 printk(KERN_WARNING "Cannot malloc new mac entry\n"); 472 return 0; 473 } 474 memcpy(entry->mac, mac, ETH_ALEN); 475 entry->seq_num[tid] = seq; 476 entry->frag_num[tid] = frag; 477 entry->packet_time[tid] = jiffies; 478 list_add(&entry->list, &ieee->ibss_mac_hash[index]); 479 return 0; 480 } 481 last_seq = &entry->seq_num[tid]; 482 last_frag = &entry->frag_num[tid]; 483 last_time = &entry->packet_time[tid]; 484 break; 485 } 486 487 case IW_MODE_INFRA: 488 last_seq = &ieee->last_rxseq_num[tid]; 489 last_frag = &ieee->last_rxfrag_num[tid]; 490 last_time = &ieee->last_packet_time[tid]; 491 492 break; 493 default: 494 return 0; 495 } 496 497// if(tid != 0) { 498// printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); 499// } 500 if ((*last_seq == seq) && 501 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { 502 if (*last_frag == frag){ 503 //printk(KERN_WARNING "[1] go drop!\n"); 504 goto drop; 505 506 } 507 if (*last_frag + 1 != frag) 508 /* out-of-order fragment */ 509 //printk(KERN_WARNING "[2] go drop!\n"); 510 goto drop; 511 } else 512 *last_seq = seq; 513 514 *last_frag = frag; 515 *last_time = jiffies; 516 return 0; 517 518drop: 519// BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); 520// printk("DUP\n"); 521 522 return 1; 523} 524bool 525AddReorderEntry( 526 PRX_TS_RECORD pTS, 527 PRX_REORDER_ENTRY pReorderEntry 528 ) 529{ 530 struct list_head *pList = &pTS->RxPendingPktList; 531 while(pList->next != &pTS->RxPendingPktList) 532 { 533 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 534 { 535 pList = pList->next; 536 } 537 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 538 { 539 return false; 540 } 541 else 542 { 543 break; 544 } 545 } 546 pReorderEntry->List.next = pList->next; 547 pReorderEntry->List.next->prev = &pReorderEntry->List; 548 pReorderEntry->List.prev = pList; 549 pList->next = &pReorderEntry->List; 550 551 return true; 552} 553 554void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index) 555{ 556 u8 i = 0 , j=0; 557 u16 ethertype; 558// if(index > 1) 559// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index); 560 for(j = 0; j<index; j++) 561 { 562//added by amy for reorder 563 struct ieee80211_rxb* prxb = prxbIndicateArray[j]; 564 for(i = 0; i<prxb->nr_subframes; i++) { 565 struct sk_buff *sub_skb = prxb->subframes[i]; 566 567 /* convert hdr + possible LLC headers into Ethernet header */ 568 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 569 if (sub_skb->len >= 8 && 570 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 571 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 572 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 573 /* remove RFC1042 or Bridge-Tunnel encapsulation and 574 * replace EtherType */ 575 skb_pull(sub_skb, SNAP_SIZE); 576 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 577 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 578 } else { 579 u16 len; 580 /* Leave Ethernet header part of hdr and full payload */ 581 len = htons(sub_skb->len); 582 memcpy(skb_push(sub_skb, 2), &len, 2); 583 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 584 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 585 } 586 //stats->rx_packets++; 587 //stats->rx_bytes += sub_skb->len; 588 589 /* Indicat the packets to upper layer */ 590 if (sub_skb) { 591 //printk("0skb_len(%d)\n", skb->len); 592 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); 593 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 594 sub_skb->dev = ieee->dev; 595 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 596 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 597 ieee->last_rx_ps_time = jiffies; 598 //printk("1skb_len(%d)\n", skb->len); 599 netif_rx(sub_skb); 600 } 601 } 602 kfree(prxb); 603 prxb = NULL; 604 } 605} 606 607 608void RxReorderIndicatePacket( struct ieee80211_device *ieee, 609 struct ieee80211_rxb* prxb, 610 PRX_TS_RECORD pTS, 611 u16 SeqNum) 612{ 613 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; 614 PRX_REORDER_ENTRY pReorderEntry = NULL; 615 struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE]; 616 u8 WinSize = pHTInfo->RxReorderWinSize; 617 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; 618 u8 index = 0; 619 bool bMatchWinStart = false, bPktInBuf = false; 620 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize); 621 /* Rx Reorder initialize condition.*/ 622 if(pTS->RxIndicateSeq == 0xffff) { 623 pTS->RxIndicateSeq = SeqNum; 624 } 625 626 /* Drop out the packet which SeqNum is smaller than WinStart */ 627 if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) { 628 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", 629 pTS->RxIndicateSeq, SeqNum); 630 pHTInfo->RxReorderDropCounter++; 631 { 632 int i; 633 for(i =0; i < prxb->nr_subframes; i++) { 634 dev_kfree_skb(prxb->subframes[i]); 635 } 636 kfree(prxb); 637 prxb = NULL; 638 } 639 return; 640 } 641 642 /* 643 * Sliding window manipulation. Conditions includes: 644 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 645 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N 646 */ 647 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { 648 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 649 bMatchWinStart = true; 650 } else if(SN_LESS(WinEnd, SeqNum)) { 651 if(SeqNum >= (WinSize - 1)) { 652 pTS->RxIndicateSeq = SeqNum + 1 -WinSize; 653 } else { 654 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; 655 } 656 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 657 } 658 659 /* 660 * Indication process. 661 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets 662 * with the SeqNum smaller than latest WinStart and buffer other packets. 663 */ 664 /* For Rx Reorder condition: 665 * 1. All packets with SeqNum smaller than WinStart => Indicate 666 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. 667 */ 668 if(bMatchWinStart) { 669 /* Current packet is going to be indicated.*/ 670 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ 671 pTS->RxIndicateSeq, SeqNum); 672 prxbIndicateArray[0] = prxb; 673// printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum); 674 index = 1; 675 } else { 676 /* Current packet is going to be inserted into pending list.*/ 677 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__); 678 if(!list_empty(&ieee->RxReorder_Unused_List)) { 679 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); 680 list_del_init(&pReorderEntry->List); 681 682 /* Make a reorder entry and insert into a the packet list.*/ 683 pReorderEntry->SeqNum = SeqNum; 684 pReorderEntry->prxb = prxb; 685 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); 686 687 if(!AddReorderEntry(pTS, pReorderEntry)) { 688 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", 689 __FUNCTION__, pTS->RxIndicateSeq, SeqNum); 690 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 691 { 692 int i; 693 for(i =0; i < prxb->nr_subframes; i++) { 694 dev_kfree_skb(prxb->subframes[i]); 695 } 696 kfree(prxb); 697 prxb = NULL; 698 } 699 } else { 700 IEEE80211_DEBUG(IEEE80211_DL_REORDER, 701 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 702 } 703 } 704 else { 705 /* 706 * Packets are dropped if there is not enough reorder entries. 707 * This part shall be modified!! We can just indicate all the 708 * packets in buffer and get reorder entries. 709 */ 710 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); 711 { 712 int i; 713 for(i =0; i < prxb->nr_subframes; i++) { 714 dev_kfree_skb(prxb->subframes[i]); 715 } 716 kfree(prxb); 717 prxb = NULL; 718 } 719 } 720 } 721 722 /* Check if there is any packet need indicate.*/ 723 while(!list_empty(&pTS->RxPendingPktList)) { 724 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__); 725 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); 726 if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || 727 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 728 { 729 /* This protect buffer from overflow. */ 730 if(index >= REORDER_WIN_SIZE) { 731 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); 732 bPktInBuf = true; 733 break; 734 } 735 736 list_del_init(&pReorderEntry->List); 737 738 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 739 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 740 741 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 742 prxbIndicateArray[index] = pReorderEntry->prxb; 743 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); 744 index++; 745 746 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 747 } else { 748 bPktInBuf = true; 749 break; 750 } 751 } 752 753 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ 754 if(index>0) { 755 // Cancel previous pending timer. 756 // del_timer_sync(&pTS->RxPktPendingTimer); 757 pTS->RxTimeoutIndicateSeq = 0xffff; 758 759 // Indicate packets 760 if(index>REORDER_WIN_SIZE){ 761 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n"); 762 return; 763 } 764 ieee80211_indicate_packets(ieee, prxbIndicateArray, index); 765 } 766 767 if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { 768 // Set new pending timer. 769 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__); 770 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; 771 if(timer_pending(&pTS->RxPktPendingTimer)) 772 del_timer_sync(&pTS->RxPktPendingTimer); 773 pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime); 774 add_timer(&pTS->RxPktPendingTimer); 775 } 776} 777 778u8 parse_subframe(struct sk_buff *skb, 779 struct ieee80211_rx_stats *rx_stats, 780 struct ieee80211_rxb *rxb,u8* src,u8* dst) 781{ 782 struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data; 783 u16 fc = le16_to_cpu(hdr->frame_ctl); 784 785 u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr); 786 u16 ChkLength; 787 bool bIsAggregateFrame = false; 788 u16 nSubframe_Length; 789 u8 nPadding_Length = 0; 790 u16 SeqNum=0; 791 792 struct sk_buff *sub_skb; 793 u8 *data_ptr; 794 /* just for debug purpose */ 795 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); 796 797 if((IEEE80211_QOS_HAS_SEQ(fc))&&\ 798 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { 799 bIsAggregateFrame = true; 800 } 801 802 if(IEEE80211_QOS_HAS_SEQ(fc)) { 803 LLCOffset += 2; 804 } 805 806 if(rx_stats->bContainHTC) { 807 LLCOffset += sHTCLng; 808 } 809 //printk("ChkLength = %d\n", LLCOffset); 810 // Null packet, don't indicate it to upper layer 811 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ 812 813 if( skb->len <= ChkLength ) { 814 return 0; 815 } 816 817 skb_pull(skb, LLCOffset); 818 819 if(!bIsAggregateFrame) { 820 rxb->nr_subframes = 1; 821#ifdef JOHN_NOCPY 822 rxb->subframes[0] = skb; 823#else 824 rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC); 825#endif 826 827 memcpy(rxb->src,src,ETH_ALEN); 828 memcpy(rxb->dst,dst,ETH_ALEN); 829 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len); 830 return 1; 831 } else { 832 rxb->nr_subframes = 0; 833 memcpy(rxb->src,src,ETH_ALEN); 834 memcpy(rxb->dst,dst,ETH_ALEN); 835 while(skb->len > ETHERNET_HEADER_SIZE) { 836 /* Offset 12 denote 2 mac address */ 837 nSubframe_Length = *((u16*)(skb->data + 12)); 838 //==m==>change the length order 839 nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8); 840 841 if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) { 842 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\ 843 __FUNCTION__,rxb->nr_subframes); 844 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length); 845 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length); 846 printk("The Packet SeqNum is %d\n",SeqNum); 847 return 0; 848 } 849 850 /* move the data point to data content */ 851 skb_pull(skb, ETHERNET_HEADER_SIZE); 852 853#ifdef JOHN_NOCPY 854 sub_skb = skb_clone(skb, GFP_ATOMIC); 855 sub_skb->len = nSubframe_Length; 856 sub_skb->tail = sub_skb->data + nSubframe_Length; 857#else 858 /* Allocate new skb for releasing to upper layer */ 859 sub_skb = dev_alloc_skb(nSubframe_Length + 12); 860 skb_reserve(sub_skb, 12); 861 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length); 862 memcpy(data_ptr,skb->data,nSubframe_Length); 863#endif 864 rxb->subframes[rxb->nr_subframes++] = sub_skb; 865 if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) { 866 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n"); 867 break; 868 } 869 skb_pull(skb,nSubframe_Length); 870 871 if(skb->len != 0) { 872 nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4); 873 if(nPadding_Length == 4) { 874 nPadding_Length = 0; 875 } 876 877 if(skb->len < nPadding_Length) { 878 return 0; 879 } 880 881 skb_pull(skb,nPadding_Length); 882 } 883 } 884#ifdef JOHN_NOCPY 885 dev_kfree_skb(skb); 886#endif 887 //{just for debug added by david 888 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes); 889 //} 890 return rxb->nr_subframes; 891 } 892} 893 894/* All received frames are sent to this function. @skb contains the frame in 895 * IEEE 802.11 format, i.e., in the format it was sent over air. 896 * This function is called only as a tasklet (software IRQ). */ 897int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, 898 struct ieee80211_rx_stats *rx_stats) 899{ 900 struct net_device *dev = ieee->dev; 901 struct ieee80211_hdr_4addr *hdr; 902 //struct ieee80211_hdr_3addrqos *hdr; 903 904 size_t hdrlen; 905 u16 fc, type, stype, sc; 906 struct net_device_stats *stats; 907 unsigned int frag; 908 u8 *payload; 909 u16 ethertype; 910 //added by amy for reorder 911 u8 TID = 0; 912 u16 SeqNum = 0; 913 PRX_TS_RECORD pTS = NULL; 914 //bool bIsAggregateFrame = false; 915 //added by amy for reorder 916#ifdef NOT_YET 917 struct net_device *wds = NULL; 918 struct sk_buff *skb2 = NULL; 919 struct net_device *wds = NULL; 920 int frame_authorized = 0; 921 int from_assoc_ap = 0; 922 void *sta = NULL; 923#endif 924// u16 qos_ctl = 0; 925 u8 dst[ETH_ALEN]; 926 u8 src[ETH_ALEN]; 927 u8 bssid[ETH_ALEN]; 928 struct ieee80211_crypt_data *crypt = NULL; 929 int keyidx = 0; 930 931 int i; 932 struct ieee80211_rxb* rxb = NULL; 933 // cheat the the hdr type 934 hdr = (struct ieee80211_hdr_4addr *)skb->data; 935 stats = &ieee->stats; 936 937 if (skb->len < 10) { 938 printk(KERN_INFO "%s: SKB length < 10\n", 939 dev->name); 940 goto rx_dropped; 941 } 942 943 fc = le16_to_cpu(hdr->frame_ctl); 944 type = WLAN_FC_GET_TYPE(fc); 945 stype = WLAN_FC_GET_STYPE(fc); 946 sc = le16_to_cpu(hdr->seq_ctl); 947 948 frag = WLAN_GET_SEQ_FRAG(sc); 949 hdrlen = ieee80211_get_hdrlen(fc); 950 951 if(HTCCheck(ieee, skb->data)) 952 { 953 if(net_ratelimit()) 954 printk("find HTCControl\n"); 955 hdrlen += 4; 956 rx_stats->bContainHTC = 1; 957 } 958 959 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 960#ifdef NOT_YET 961#if WIRELESS_EXT > 15 962 /* Put this code here so that we avoid duplicating it in all 963 * Rx paths. - Jean II */ 964#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ 965 /* If spy monitoring on */ 966 if (iface->spy_data.spy_number > 0) { 967 struct iw_quality wstats; 968 wstats.level = rx_stats->rssi; 969 wstats.noise = rx_stats->noise; 970 wstats.updated = 6; /* No qual value */ 971 /* Update spy records */ 972 wireless_spy_update(dev, hdr->addr2, &wstats); 973 } 974#endif /* IW_WIRELESS_SPY */ 975#endif /* WIRELESS_EXT > 15 */ 976 hostap_update_rx_stats(local->ap, hdr, rx_stats); 977#endif 978 979#if WIRELESS_EXT > 15 980 if (ieee->iw_mode == IW_MODE_MONITOR) { 981 ieee80211_monitor_rx(ieee, skb, rx_stats); 982 stats->rx_packets++; 983 stats->rx_bytes += skb->len; 984 return 1; 985 } 986#endif 987 if (ieee->host_decrypt) { 988 int idx = 0; 989 if (skb->len >= hdrlen + 3) 990 idx = skb->data[hdrlen + 3] >> 6; 991 crypt = ieee->crypt[idx]; 992#ifdef NOT_YET 993 sta = NULL; 994 995 /* Use station specific key to override default keys if the 996 * receiver address is a unicast address ("individual RA"). If 997 * bcrx_sta_key parameter is set, station specific key is used 998 * even with broad/multicast targets (this is against IEEE 999 * 802.11, but makes it easier to use different keys with 1000 * stations that do not support WEP key mapping). */ 1001 1002 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) 1003 (void) hostap_handle_sta_crypto(local, hdr, &crypt, 1004 &sta); 1005#endif 1006 1007 /* allow NULL decrypt to indicate an station specific override 1008 * for default encryption */ 1009 if (crypt && (crypt->ops == NULL || 1010 crypt->ops->decrypt_mpdu == NULL)) 1011 crypt = NULL; 1012 1013 if (!crypt && (fc & IEEE80211_FCTL_WEP)) { 1014 /* This seems to be triggered by some (multicast?) 1015 * frames from other than current BSS, so just drop the 1016 * frames silently instead of filling system log with 1017 * these reports. */ 1018 IEEE80211_DEBUG_DROP("Decryption failed (not set)" 1019 " (SA=%pM)\n", 1020 hdr->addr2); 1021 ieee->ieee_stats.rx_discards_undecryptable++; 1022 goto rx_dropped; 1023 } 1024 } 1025 1026 if (skb->len < IEEE80211_DATA_HDR3_LEN) 1027 goto rx_dropped; 1028 1029 // if QoS enabled, should check the sequence for each of the AC 1030 if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){ 1031 if (is_duplicate_packet(ieee, hdr)) 1032 goto rx_dropped; 1033 1034 } 1035 else 1036 { 1037 PRX_TS_RECORD pRxTS = NULL; 1038 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid); 1039 if(GetTs( 1040 ieee, 1041 (PTS_COMMON_INFO*) &pRxTS, 1042 hdr->addr2, 1043 (u8)Frame_QoSTID((u8*)(skb->data)), 1044 RX_DIR, 1045 true)) 1046 { 1047 1048 // 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)); 1049 if( (fc & (1<<11)) && 1050 (frag == pRxTS->RxLastFragNum) && 1051 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) ) 1052 { 1053 goto rx_dropped; 1054 } 1055 else 1056 { 1057 pRxTS->RxLastFragNum = frag; 1058 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); 1059 } 1060 } 1061 else 1062 { 1063 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__); 1064 goto rx_dropped; 1065 } 1066 } 1067 if (type == IEEE80211_FTYPE_MGMT) { 1068 1069 1070 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1071 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) 1072 goto rx_dropped; 1073 else 1074 goto rx_exit; 1075 } 1076 1077 /* Data frame - extract src/dst addresses */ 1078 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { 1079 case IEEE80211_FCTL_FROMDS: 1080 memcpy(dst, hdr->addr1, ETH_ALEN); 1081 memcpy(src, hdr->addr3, ETH_ALEN); 1082 memcpy(bssid, hdr->addr2, ETH_ALEN); 1083 break; 1084 case IEEE80211_FCTL_TODS: 1085 memcpy(dst, hdr->addr3, ETH_ALEN); 1086 memcpy(src, hdr->addr2, ETH_ALEN); 1087 memcpy(bssid, hdr->addr1, ETH_ALEN); 1088 break; 1089 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: 1090 if (skb->len < IEEE80211_DATA_HDR4_LEN) 1091 goto rx_dropped; 1092 memcpy(dst, hdr->addr3, ETH_ALEN); 1093 memcpy(src, hdr->addr4, ETH_ALEN); 1094 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); 1095 break; 1096 case 0: 1097 memcpy(dst, hdr->addr1, ETH_ALEN); 1098 memcpy(src, hdr->addr2, ETH_ALEN); 1099 memcpy(bssid, hdr->addr3, ETH_ALEN); 1100 break; 1101 } 1102 1103#ifdef NOT_YET 1104 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds)) 1105 goto rx_dropped; 1106 if (wds) { 1107 skb->dev = dev = wds; 1108 stats = hostap_get_stats(dev); 1109 } 1110 1111 if (ieee->iw_mode == IW_MODE_MASTER && !wds && 1112 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS && 1113 ieee->stadev && 1114 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) { 1115 /* Frame from BSSID of the AP for which we are a client */ 1116 skb->dev = dev = ieee->stadev; 1117 stats = hostap_get_stats(dev); 1118 from_assoc_ap = 1; 1119 } 1120#endif 1121 1122 dev->last_rx = jiffies; 1123 1124#ifdef NOT_YET 1125 if ((ieee->iw_mode == IW_MODE_MASTER || 1126 ieee->iw_mode == IW_MODE_REPEAT) && 1127 !from_assoc_ap) { 1128 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, 1129 wds != NULL)) { 1130 case AP_RX_CONTINUE_NOT_AUTHORIZED: 1131 frame_authorized = 0; 1132 break; 1133 case AP_RX_CONTINUE: 1134 frame_authorized = 1; 1135 break; 1136 case AP_RX_DROP: 1137 goto rx_dropped; 1138 case AP_RX_EXIT: 1139 goto rx_exit; 1140 } 1141 } 1142#endif 1143 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1144 /* Nullfunc frames may have PS-bit set, so they must be passed to 1145 * hostap_handle_sta_rx() before being dropped here. */ 1146 if (stype != IEEE80211_STYPE_DATA && 1147 stype != IEEE80211_STYPE_DATA_CFACK && 1148 stype != IEEE80211_STYPE_DATA_CFPOLL && 1149 stype != IEEE80211_STYPE_DATA_CFACKPOLL&& 1150 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 1151 ) { 1152 if (stype != IEEE80211_STYPE_NULLFUNC) 1153 IEEE80211_DEBUG_DROP( 1154 "RX: dropped data frame " 1155 "with no data (type=0x%02x, " 1156 "subtype=0x%02x, len=%d)\n", 1157 type, stype, skb->len); 1158 goto rx_dropped; 1159 } 1160 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) 1161 goto rx_dropped; 1162 1163 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ 1164 1165 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1166 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) 1167 { 1168 printk("decrypt frame error\n"); 1169 goto rx_dropped; 1170 } 1171 1172 1173 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1174 1175 /* skb: hdr + (possibly fragmented) plaintext payload */ 1176 // PR: FIXME: hostap has additional conditions in the "if" below: 1177 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1178 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { 1179 int flen; 1180 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); 1181 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); 1182 1183 if (!frag_skb) { 1184 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, 1185 "Rx cannot get skb from fragment " 1186 "cache (morefrag=%d seq=%u frag=%u)\n", 1187 (fc & IEEE80211_FCTL_MOREFRAGS) != 0, 1188 WLAN_GET_SEQ_SEQ(sc), frag); 1189 goto rx_dropped; 1190 } 1191 flen = skb->len; 1192 if (frag != 0) 1193 flen -= hdrlen; 1194 1195 if (frag_skb->tail + flen > frag_skb->end) { 1196 printk(KERN_WARNING "%s: host decrypted and " 1197 "reassembled frame did not fit skb\n", 1198 dev->name); 1199 ieee80211_frag_cache_invalidate(ieee, hdr); 1200 goto rx_dropped; 1201 } 1202 1203 if (frag == 0) { 1204 /* copy first fragment (including full headers) into 1205 * beginning of the fragment cache skb */ 1206 memcpy(skb_put(frag_skb, flen), skb->data, flen); 1207 } else { 1208 /* append frame payload to the end of the fragment 1209 * cache skb */ 1210 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, 1211 flen); 1212 } 1213 dev_kfree_skb_any(skb); 1214 skb = NULL; 1215 1216 if (fc & IEEE80211_FCTL_MOREFRAGS) { 1217 /* more fragments expected - leave the skb in fragment 1218 * cache for now; it will be delivered to upper layers 1219 * after all fragments have been received */ 1220 goto rx_exit; 1221 } 1222 1223 /* this was the last fragment and the frame will be 1224 * delivered, so remove skb from fragment cache */ 1225 skb = frag_skb; 1226 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1227 ieee80211_frag_cache_invalidate(ieee, hdr); 1228 } 1229 1230 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still 1231 * encrypted/authenticated */ 1232 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1233 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) 1234 { 1235 printk("==>decrypt msdu error\n"); 1236 goto rx_dropped; 1237 } 1238 1239 //added by amy for AP roaming 1240 ieee->LinkDetectInfo.NumRecvDataInPeriod++; 1241 ieee->LinkDetectInfo.NumRxOkInPeriod++; 1242 1243 hdr = (struct ieee80211_hdr_4addr *) skb->data; 1244 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { 1245 if (/*ieee->ieee802_1x &&*/ 1246 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1247 1248#ifdef CONFIG_IEEE80211_DEBUG 1249 /* pass unencrypted EAPOL frames even if encryption is 1250 * configured */ 1251 struct eapol *eap = (struct eapol *)(skb->data + 1252 24); 1253 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1254 eap_get_type(eap->type)); 1255#endif 1256 } else { 1257 IEEE80211_DEBUG_DROP( 1258 "encryption configured, but RX " 1259 "frame not encrypted (SA=%pM)\n", 1260 hdr->addr2); 1261 goto rx_dropped; 1262 } 1263 } 1264 1265#ifdef CONFIG_IEEE80211_DEBUG 1266 if (crypt && !(fc & IEEE80211_FCTL_WEP) && 1267 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1268 struct eapol *eap = (struct eapol *)(skb->data + 1269 24); 1270 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1271 eap_get_type(eap->type)); 1272 } 1273#endif 1274 1275 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && 1276 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1277 IEEE80211_DEBUG_DROP( 1278 "dropped unencrypted RX data " 1279 "frame from %pM" 1280 " (drop_unencrypted=1)\n", 1281 hdr->addr2); 1282 goto rx_dropped; 1283 } 1284/* 1285 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1286 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); 1287 } 1288*/ 1289//added by amy for reorder 1290 if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) 1291 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)) 1292 { 1293 TID = Frame_QoSTID(skb->data); 1294 SeqNum = WLAN_GET_SEQ_SEQ(sc); 1295 GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true); 1296 if(TID !=0 && TID !=3) 1297 { 1298 ieee->bis_any_nonbepkts = true; 1299 } 1300 } 1301//added by amy for reorder 1302 /* skb: hdr + (possible reassembled) full plaintext payload */ 1303 payload = skb->data + hdrlen; 1304 //ethertype = (payload[6] << 8) | payload[7]; 1305 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); 1306 if(rxb == NULL) 1307 { 1308 IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__); 1309 goto rx_dropped; 1310 } 1311 /* to parse amsdu packets */ 1312 /* qos data packets & reserved bit is 1 */ 1313 if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) { 1314 /* only to free rxb, and not submit the packets to upper layer */ 1315 for(i =0; i < rxb->nr_subframes; i++) { 1316 dev_kfree_skb(rxb->subframes[i]); 1317 } 1318 kfree(rxb); 1319 rxb = NULL; 1320 goto rx_dropped; 1321 } 1322 1323//added by amy for reorder 1324 if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){ 1325//added by amy for reorder 1326 for(i = 0; i<rxb->nr_subframes; i++) { 1327 struct sk_buff *sub_skb = rxb->subframes[i]; 1328 1329 if (sub_skb) { 1330 /* convert hdr + possible LLC headers into Ethernet header */ 1331 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 1332 if (sub_skb->len >= 8 && 1333 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 1334 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 1335 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 1336 /* remove RFC1042 or Bridge-Tunnel encapsulation and 1337 * replace EtherType */ 1338 skb_pull(sub_skb, SNAP_SIZE); 1339 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1340 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1341 } else { 1342 u16 len; 1343 /* Leave Ethernet header part of hdr and full payload */ 1344 len = htons(sub_skb->len); 1345 memcpy(skb_push(sub_skb, 2), &len, 2); 1346 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1347 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1348 } 1349 1350 stats->rx_packets++; 1351 stats->rx_bytes += sub_skb->len; 1352 if(is_multicast_ether_addr(dst)) { 1353 stats->multicast++; 1354 } 1355 1356 /* Indicat the packets to upper layer */ 1357 //printk("0skb_len(%d)\n", skb->len); 1358 sub_skb->protocol = eth_type_trans(sub_skb, dev); 1359 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 1360 sub_skb->dev = dev; 1361 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 1362 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 1363 ieee->last_rx_ps_time = jiffies; 1364 //printk("1skb_len(%d)\n", skb->len); 1365 netif_rx(sub_skb); 1366 } 1367 } 1368 kfree(rxb); 1369 rxb = NULL; 1370 1371 } 1372 else 1373 { 1374 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__); 1375 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); 1376 } 1377#ifndef JOHN_NOCPY 1378 dev_kfree_skb(skb); 1379#endif 1380 1381 rx_exit: 1382#ifdef NOT_YET 1383 if (sta) 1384 hostap_handle_sta_release(sta); 1385#endif 1386 return 1; 1387 1388 rx_dropped: 1389 if (rxb != NULL) 1390 { 1391 kfree(rxb); 1392 rxb = NULL; 1393 } 1394 stats->rx_dropped++; 1395 1396 /* Returning 0 indicates to caller that we have not handled the SKB-- 1397 * so it is still allocated and can be used again by underlying 1398 * hardware as a DMA target */ 1399 return 0; 1400} 1401 1402#define MGMT_FRAME_FIXED_PART_LENGTH 0x24 1403 1404static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; 1405 1406/* 1407* Make ther structure we read from the beacon packet has 1408* the right values 1409*/ 1410static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element 1411 *info_element, int sub_type) 1412{ 1413 1414 if (info_element->qui_subtype != sub_type) 1415 return -1; 1416 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) 1417 return -1; 1418 if (info_element->qui_type != QOS_OUI_TYPE) 1419 return -1; 1420 if (info_element->version != QOS_VERSION_1) 1421 return -1; 1422 1423 return 0; 1424} 1425 1426 1427/* 1428 * Parse a QoS parameter element 1429 */ 1430static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info 1431 *element_param, struct ieee80211_info_element 1432 *info_element) 1433{ 1434 int ret = 0; 1435 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; 1436 1437 if ((info_element == NULL) || (element_param == NULL)) 1438 return -1; 1439 1440 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { 1441 memcpy(element_param->info_element.qui, info_element->data, 1442 info_element->len); 1443 element_param->info_element.elementID = info_element->id; 1444 element_param->info_element.length = info_element->len; 1445 } else 1446 ret = -1; 1447 if (ret == 0) 1448 ret = ieee80211_verify_qos_info(&element_param->info_element, 1449 QOS_OUI_PARAM_SUB_TYPE); 1450 return ret; 1451} 1452 1453/* 1454 * Parse a QoS information element 1455 */ 1456static int ieee80211_read_qos_info_element(struct 1457 ieee80211_qos_information_element 1458 *element_info, struct ieee80211_info_element 1459 *info_element) 1460{ 1461 int ret = 0; 1462 u16 size = sizeof(struct ieee80211_qos_information_element) - 2; 1463 1464 if (element_info == NULL) 1465 return -1; 1466 if (info_element == NULL) 1467 return -1; 1468 1469 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { 1470 memcpy(element_info->qui, info_element->data, 1471 info_element->len); 1472 element_info->elementID = info_element->id; 1473 element_info->length = info_element->len; 1474 } else 1475 ret = -1; 1476 1477 if (ret == 0) 1478 ret = ieee80211_verify_qos_info(element_info, 1479 QOS_OUI_INFO_SUB_TYPE); 1480 return ret; 1481} 1482 1483 1484/* 1485 * Write QoS parameters from the ac parameters. 1486 */ 1487static int ieee80211_qos_convert_ac_to_parameters(struct 1488 ieee80211_qos_parameter_info 1489 *param_elm, struct 1490 ieee80211_qos_parameters 1491 *qos_param) 1492{ 1493 int rc = 0; 1494 int i; 1495 struct ieee80211_qos_ac_parameter *ac_params; 1496 u8 aci; 1497 //u8 cw_min; 1498 //u8 cw_max; 1499 1500 for (i = 0; i < QOS_QUEUE_NUM; i++) { 1501 ac_params = &(param_elm->ac_params_record[i]); 1502 1503 aci = (ac_params->aci_aifsn & 0x60) >> 5; 1504 1505 if(aci >= QOS_QUEUE_NUM) 1506 continue; 1507 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; 1508 1509 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ 1510 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; 1511 1512 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; 1513 1514 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; 1515 1516 qos_param->flag[aci] = 1517 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; 1518 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); 1519 } 1520 return rc; 1521} 1522 1523/* 1524 * we have a generic data element which it may contain QoS information or 1525 * parameters element. check the information element length to decide 1526 * which type to read 1527 */ 1528static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element 1529 *info_element, 1530 struct ieee80211_network *network) 1531{ 1532 int rc = 0; 1533 struct ieee80211_qos_parameters *qos_param = NULL; 1534 struct ieee80211_qos_information_element qos_info_element; 1535 1536 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); 1537 1538 if (rc == 0) { 1539 network->qos_data.param_count = qos_info_element.ac_info & 0x0F; 1540 network->flags |= NETWORK_HAS_QOS_INFORMATION; 1541 } else { 1542 struct ieee80211_qos_parameter_info param_element; 1543 1544 rc = ieee80211_read_qos_param_element(¶m_element, 1545 info_element); 1546 if (rc == 0) { 1547 qos_param = &(network->qos_data.parameters); 1548 ieee80211_qos_convert_ac_to_parameters(¶m_element, 1549 qos_param); 1550 network->flags |= NETWORK_HAS_QOS_PARAMETERS; 1551 network->qos_data.param_count = 1552 param_element.info_element.ac_info & 0x0F; 1553 } 1554 } 1555 1556 if (rc == 0) { 1557 IEEE80211_DEBUG_QOS("QoS is supported\n"); 1558 network->qos_data.supported = 1; 1559 } 1560 return rc; 1561} 1562 1563#ifdef CONFIG_IEEE80211_DEBUG 1564#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x 1565 1566static const char *get_info_element_string(u16 id) 1567{ 1568 switch (id) { 1569 MFIE_STRING(SSID); 1570 MFIE_STRING(RATES); 1571 MFIE_STRING(FH_SET); 1572 MFIE_STRING(DS_SET); 1573 MFIE_STRING(CF_SET); 1574 MFIE_STRING(TIM); 1575 MFIE_STRING(IBSS_SET); 1576 MFIE_STRING(COUNTRY); 1577 MFIE_STRING(HOP_PARAMS); 1578 MFIE_STRING(HOP_TABLE); 1579 MFIE_STRING(REQUEST); 1580 MFIE_STRING(CHALLENGE); 1581 MFIE_STRING(POWER_CONSTRAINT); 1582 MFIE_STRING(POWER_CAPABILITY); 1583 MFIE_STRING(TPC_REQUEST); 1584 MFIE_STRING(TPC_REPORT); 1585 MFIE_STRING(SUPP_CHANNELS); 1586 MFIE_STRING(CSA); 1587 MFIE_STRING(MEASURE_REQUEST); 1588 MFIE_STRING(MEASURE_REPORT); 1589 MFIE_STRING(QUIET); 1590 MFIE_STRING(IBSS_DFS); 1591 // MFIE_STRING(ERP_INFO); 1592 MFIE_STRING(RSN); 1593 MFIE_STRING(RATES_EX); 1594 MFIE_STRING(GENERIC); 1595 MFIE_STRING(QOS_PARAMETER); 1596 default: 1597 return "UNKNOWN"; 1598 } 1599} 1600#endif 1601 1602#ifdef ENABLE_DOT11D 1603static inline void ieee80211_extract_country_ie( 1604 struct ieee80211_device *ieee, 1605 struct ieee80211_info_element *info_element, 1606 struct ieee80211_network *network, 1607 u8 * addr2 1608) 1609{ 1610 if(IS_DOT11D_ENABLE(ieee)) 1611 { 1612 if(info_element->len!= 0) 1613 { 1614 memcpy(network->CountryIeBuf, info_element->data, info_element->len); 1615 network->CountryIeLen = info_element->len; 1616 1617 if(!IS_COUNTRY_IE_VALID(ieee)) 1618 { 1619 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); 1620 } 1621 } 1622 1623 // 1624 // 070305, rcnjko: I update country IE watch dog here because 1625 // some AP (e.g. Cisco 1242) don't include country IE in their 1626 // probe response frame. 1627 // 1628 if(IS_EQUAL_CIE_SRC(ieee, addr2) ) 1629 { 1630 UPDATE_CIE_WATCHDOG(ieee); 1631 } 1632 } 1633 1634} 1635#endif 1636 1637int ieee80211_parse_info_param(struct ieee80211_device *ieee, 1638 struct ieee80211_info_element *info_element, 1639 u16 length, 1640 struct ieee80211_network *network, 1641 struct ieee80211_rx_stats *stats) 1642{ 1643 u8 i; 1644 short offset; 1645 u16 tmp_htcap_len=0; 1646 u16 tmp_htinfo_len=0; 1647 u16 ht_realtek_agg_len=0; 1648 u8 ht_realtek_agg_buf[MAX_IE_LEN]; 1649// u16 broadcom_len = 0; 1650#ifdef CONFIG_IEEE80211_DEBUG 1651 char rates_str[64]; 1652 char *p; 1653#endif 1654 1655 while (length >= sizeof(*info_element)) { 1656 if (sizeof(*info_element) + info_element->len > length) { 1657 IEEE80211_DEBUG_MGMT("Info elem: parse failed: " 1658 "info_element->len + 2 > left : " 1659 "info_element->len+2=%zd left=%d, id=%d.\n", 1660 info_element->len + 1661 sizeof(*info_element), 1662 length, info_element->id); 1663 /* We stop processing but don't return an error here 1664 * because some misbehaviour APs break this rule. ie. 1665 * Orinoco AP1000. */ 1666 break; 1667 } 1668 1669 switch (info_element->id) { 1670 case MFIE_TYPE_SSID: 1671 if (ieee80211_is_empty_essid(info_element->data, 1672 info_element->len)) { 1673 network->flags |= NETWORK_EMPTY_ESSID; 1674 break; 1675 } 1676 1677 network->ssid_len = min(info_element->len, 1678 (u8) IW_ESSID_MAX_SIZE); 1679 memcpy(network->ssid, info_element->data, network->ssid_len); 1680 if (network->ssid_len < IW_ESSID_MAX_SIZE) 1681 memset(network->ssid + network->ssid_len, 0, 1682 IW_ESSID_MAX_SIZE - network->ssid_len); 1683 1684 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", 1685 network->ssid, network->ssid_len); 1686 break; 1687 1688 case MFIE_TYPE_RATES: 1689#ifdef CONFIG_IEEE80211_DEBUG 1690 p = rates_str; 1691#endif 1692 network->rates_len = min(info_element->len, 1693 MAX_RATES_LENGTH); 1694 for (i = 0; i < network->rates_len; i++) { 1695 network->rates[i] = info_element->data[i]; 1696#ifdef CONFIG_IEEE80211_DEBUG 1697 p += snprintf(p, sizeof(rates_str) - 1698 (p - rates_str), "%02X ", 1699 network->rates[i]); 1700#endif 1701 if (ieee80211_is_ofdm_rate 1702 (info_element->data[i])) { 1703 network->flags |= NETWORK_HAS_OFDM; 1704 if (info_element->data[i] & 1705 IEEE80211_BASIC_RATE_MASK) 1706 network->flags &= 1707 ~NETWORK_HAS_CCK; 1708 } 1709 } 1710 1711 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", 1712 rates_str, network->rates_len); 1713 break; 1714 1715 case MFIE_TYPE_RATES_EX: 1716#ifdef CONFIG_IEEE80211_DEBUG 1717 p = rates_str; 1718#endif 1719 network->rates_ex_len = min(info_element->len, 1720 MAX_RATES_EX_LENGTH); 1721 for (i = 0; i < network->rates_ex_len; i++) { 1722 network->rates_ex[i] = info_element->data[i]; 1723#ifdef CONFIG_IEEE80211_DEBUG 1724 p += snprintf(p, sizeof(rates_str) - 1725 (p - rates_str), "%02X ", 1726 network->rates[i]); 1727#endif 1728 if (ieee80211_is_ofdm_rate 1729 (info_element->data[i])) { 1730 network->flags |= NETWORK_HAS_OFDM; 1731 if (info_element->data[i] & 1732 IEEE80211_BASIC_RATE_MASK) 1733 network->flags &= 1734 ~NETWORK_HAS_CCK; 1735 } 1736 } 1737 1738 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", 1739 rates_str, network->rates_ex_len); 1740 break; 1741 1742 case MFIE_TYPE_DS_SET: 1743 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", 1744 info_element->data[0]); 1745 network->channel = info_element->data[0]; 1746 break; 1747 1748 case MFIE_TYPE_FH_SET: 1749 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); 1750 break; 1751 1752 case MFIE_TYPE_CF_SET: 1753 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); 1754 break; 1755 1756 case MFIE_TYPE_TIM: 1757 if(info_element->len < 4) 1758 break; 1759 1760 network->tim.tim_count = info_element->data[0]; 1761 network->tim.tim_period = info_element->data[1]; 1762 1763 network->dtim_period = info_element->data[1]; 1764 if(ieee->state != IEEE80211_LINKED) 1765 break; 1766 1767 network->last_dtim_sta_time[0] = stats->mac_time[0]; 1768 network->last_dtim_sta_time[1] = stats->mac_time[1]; 1769 1770 network->dtim_data = IEEE80211_DTIM_VALID; 1771 1772 if(info_element->data[0] != 0) 1773 break; 1774 1775 if(info_element->data[2] & 1) 1776 network->dtim_data |= IEEE80211_DTIM_MBCAST; 1777 1778 offset = (info_element->data[2] >> 1)*2; 1779 1780 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id); 1781 1782 if(ieee->assoc_id < 8*offset || 1783 ieee->assoc_id > 8*(offset + info_element->len -3)) 1784 1785 break; 1786 1787 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; 1788 1789 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) 1790 network->dtim_data |= IEEE80211_DTIM_UCAST; 1791 1792 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); 1793 break; 1794 1795 case MFIE_TYPE_ERP: 1796 network->erp_value = info_element->data[0]; 1797 network->flags |= NETWORK_HAS_ERP_VALUE; 1798 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", 1799 network->erp_value); 1800 break; 1801 case MFIE_TYPE_IBSS_SET: 1802 network->atim_window = info_element->data[0]; 1803 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", 1804 network->atim_window); 1805 break; 1806 1807 case MFIE_TYPE_CHALLENGE: 1808 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); 1809 break; 1810 1811 case MFIE_TYPE_GENERIC: 1812 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", 1813 info_element->len); 1814 if (!ieee80211_parse_qos_info_param_IE(info_element, 1815 network)) 1816 break; 1817 1818 if (info_element->len >= 4 && 1819 info_element->data[0] == 0x00 && 1820 info_element->data[1] == 0x50 && 1821 info_element->data[2] == 0xf2 && 1822 info_element->data[3] == 0x01) { 1823 network->wpa_ie_len = min(info_element->len + 2, 1824 MAX_WPA_IE_LEN); 1825 memcpy(network->wpa_ie, info_element, 1826 network->wpa_ie_len); 1827 break; 1828 } 1829 1830#ifdef THOMAS_TURBO 1831 if (info_element->len == 7 && 1832 info_element->data[0] == 0x00 && 1833 info_element->data[1] == 0xe0 && 1834 info_element->data[2] == 0x4c && 1835 info_element->data[3] == 0x01 && 1836 info_element->data[4] == 0x02) { 1837 network->Turbo_Enable = 1; 1838 } 1839#endif 1840 1841 //for HTcap and HTinfo parameters 1842 if(tmp_htcap_len == 0){ 1843 if(info_element->len >= 4 && 1844 info_element->data[0] == 0x00 && 1845 info_element->data[1] == 0x90 && 1846 info_element->data[2] == 0x4c && 1847 info_element->data[3] == 0x033){ 1848 1849 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 1850 if(tmp_htcap_len != 0){ 1851 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1852 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 1853 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 1854 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 1855 } 1856 } 1857 if(tmp_htcap_len != 0) 1858 network->bssht.bdSupportHT = true; 1859 else 1860 network->bssht.bdSupportHT = false; 1861 } 1862 1863 1864 if(tmp_htinfo_len == 0){ 1865 if(info_element->len >= 4 && 1866 info_element->data[0] == 0x00 && 1867 info_element->data[1] == 0x90 && 1868 info_element->data[2] == 0x4c && 1869 info_element->data[3] == 0x034){ 1870 1871 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 1872 if(tmp_htinfo_len != 0){ 1873 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1874 if(tmp_htinfo_len){ 1875 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 1876 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 1877 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 1878 } 1879 1880 } 1881 1882 } 1883 } 1884 1885 if(ieee->aggregation){ 1886 if(network->bssht.bdSupportHT){ 1887 if(info_element->len >= 4 && 1888 info_element->data[0] == 0x00 && 1889 info_element->data[1] == 0xe0 && 1890 info_element->data[2] == 0x4c && 1891 info_element->data[3] == 0x02){ 1892 1893 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); 1894 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); 1895 1896 } 1897 if(ht_realtek_agg_len >= 5){ 1898 network->bssht.bdRT2RTAggregation = true; 1899 1900 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) 1901 network->bssht.bdRT2RTLongSlotTime = true; 1902 } 1903 } 1904 1905 } 1906 1907 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) 1908 { 1909 if((info_element->len >= 3 && 1910 info_element->data[0] == 0x00 && 1911 info_element->data[1] == 0x05 && 1912 info_element->data[2] == 0xb5) || 1913 (info_element->len >= 3 && 1914 info_element->data[0] == 0x00 && 1915 info_element->data[1] == 0x0a && 1916 info_element->data[2] == 0xf7) || 1917 (info_element->len >= 3 && 1918 info_element->data[0] == 0x00 && 1919 info_element->data[1] == 0x10 && 1920 info_element->data[2] == 0x18)){ 1921 1922 network->broadcom_cap_exist = true; 1923 1924 } 1925 } 1926 if(info_element->len >= 3 && 1927 info_element->data[0] == 0x00 && 1928 info_element->data[1] == 0x0c && 1929 info_element->data[2] == 0x43) 1930 { 1931 network->ralink_cap_exist = true; 1932 } 1933 else 1934 network->ralink_cap_exist = false; 1935 //added by amy for atheros AP 1936 if((info_element->len >= 3 && 1937 info_element->data[0] == 0x00 && 1938 info_element->data[1] == 0x03 && 1939 info_element->data[2] == 0x7f) || 1940 (info_element->len >= 3 && 1941 info_element->data[0] == 0x00 && 1942 info_element->data[1] == 0x13 && 1943 info_element->data[2] == 0x74)) 1944 { 1945 printk("========>%s(): athros AP is exist\n",__FUNCTION__); 1946 network->atheros_cap_exist = true; 1947 } 1948 else 1949 network->atheros_cap_exist = false; 1950 1951 if(info_element->len >= 3 && 1952 info_element->data[0] == 0x00 && 1953 info_element->data[1] == 0x40 && 1954 info_element->data[2] == 0x96) 1955 { 1956 network->cisco_cap_exist = true; 1957 } 1958 else 1959 network->cisco_cap_exist = false; 1960 //added by amy for LEAP of cisco 1961 if(info_element->len > 4 && 1962 info_element->data[0] == 0x00 && 1963 info_element->data[1] == 0x40 && 1964 info_element->data[2] == 0x96 && 1965 info_element->data[3] == 0x01) 1966 { 1967 if(info_element->len == 6) 1968 { 1969 memcpy(network->CcxRmState, &info_element[4], 2); 1970 if(network->CcxRmState[0] != 0) 1971 { 1972 network->bCcxRmEnable = true; 1973 } 1974 else 1975 network->bCcxRmEnable = false; 1976 // 1977 // CCXv4 Table 59-1 MBSSID Masks. 1978 // 1979 network->MBssidMask = network->CcxRmState[1] & 0x07; 1980 if(network->MBssidMask != 0) 1981 { 1982 network->bMBssidValid = true; 1983 network->MBssidMask = 0xff << (network->MBssidMask); 1984 cpMacAddr(network->MBssid, network->bssid); 1985 network->MBssid[5] &= network->MBssidMask; 1986 } 1987 else 1988 { 1989 network->bMBssidValid = false; 1990 } 1991 } 1992 else 1993 { 1994 network->bCcxRmEnable = false; 1995 } 1996 } 1997 if(info_element->len > 4 && 1998 info_element->data[0] == 0x00 && 1999 info_element->data[1] == 0x40 && 2000 info_element->data[2] == 0x96 && 2001 info_element->data[3] == 0x03) 2002 { 2003 if(info_element->len == 5) 2004 { 2005 network->bWithCcxVerNum = true; 2006 network->BssCcxVerNumber = info_element->data[4]; 2007 } 2008 else 2009 { 2010 network->bWithCcxVerNum = false; 2011 network->BssCcxVerNumber = 0; 2012 } 2013 } 2014 break; 2015 2016 case MFIE_TYPE_RSN: 2017 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", 2018 info_element->len); 2019 network->rsn_ie_len = min(info_element->len + 2, 2020 MAX_WPA_IE_LEN); 2021 memcpy(network->rsn_ie, info_element, 2022 network->rsn_ie_len); 2023 break; 2024 2025 //HT related element. 2026 case MFIE_TYPE_HT_CAP: 2027 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", 2028 info_element->len); 2029 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 2030 if(tmp_htcap_len != 0){ 2031 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 2032 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 2033 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 2034 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 2035 2036 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() 2037 // windows driver will update WMM parameters each beacon received once connected 2038 // Linux driver is a bit different. 2039 network->bssht.bdSupportHT = true; 2040 } 2041 else 2042 network->bssht.bdSupportHT = false; 2043 break; 2044 2045 2046 case MFIE_TYPE_HT_INFO: 2047 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", 2048 info_element->len); 2049 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 2050 if(tmp_htinfo_len){ 2051 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; 2052 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 2053 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 2054 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 2055 } 2056 break; 2057 2058 case MFIE_TYPE_AIRONET: 2059 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", 2060 info_element->len); 2061 if(info_element->len >IE_CISCO_FLAG_POSITION) 2062 { 2063 network->bWithAironetIE = true; 2064 2065 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): 2066 // "A Cisco access point advertises support for CKIP in beacon and probe response packets, 2067 // by adding an Aironet element and setting one or both of the CKIP negotiation bits." 2068 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || 2069 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) 2070 { 2071 network->bCkipSupported = true; 2072 } 2073 else 2074 { 2075 network->bCkipSupported = false; 2076 } 2077 } 2078 else 2079 { 2080 network->bWithAironetIE = false; 2081 network->bCkipSupported = false; 2082 } 2083 break; 2084 case MFIE_TYPE_QOS_PARAMETER: 2085 printk(KERN_ERR 2086 "QoS Error need to parse QOS_PARAMETER IE\n"); 2087 break; 2088 2089#ifdef ENABLE_DOT11D 2090 case MFIE_TYPE_COUNTRY: 2091 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", 2092 info_element->len); 2093 //printk("=====>Receive <%s> Country IE\n",network->ssid); 2094 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP 2095 break; 2096#endif 2097/* TODO */ 2098 default: 2099 IEEE80211_DEBUG_MGMT 2100 ("Unsupported info element: %s (%d)\n", 2101 get_info_element_string(info_element->id), 2102 info_element->id); 2103 break; 2104 } 2105 2106 length -= sizeof(*info_element) + info_element->len; 2107 info_element = 2108 (struct ieee80211_info_element *)&info_element-> 2109 data[info_element->len]; 2110 } 2111 2112 if(!network->atheros_cap_exist && !network->broadcom_cap_exist && 2113 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) 2114 { 2115 network->unknown_cap_exist = true; 2116 } 2117 else 2118 { 2119 network->unknown_cap_exist = false; 2120 } 2121 return 0; 2122} 2123 2124static inline u8 ieee80211_SignalStrengthTranslate( 2125 u8 CurrSS 2126 ) 2127{ 2128 u8 RetSS; 2129 2130 // Step 1. Scale mapping. 2131 if(CurrSS >= 71 && CurrSS <= 100) 2132 { 2133 RetSS = 90 + ((CurrSS - 70) / 3); 2134 } 2135 else if(CurrSS >= 41 && CurrSS <= 70) 2136 { 2137 RetSS = 78 + ((CurrSS - 40) / 3); 2138 } 2139 else if(CurrSS >= 31 && CurrSS <= 40) 2140 { 2141 RetSS = 66 + (CurrSS - 30); 2142 } 2143 else if(CurrSS >= 21 && CurrSS <= 30) 2144 { 2145 RetSS = 54 + (CurrSS - 20); 2146 } 2147 else if(CurrSS >= 5 && CurrSS <= 20) 2148 { 2149 RetSS = 42 + (((CurrSS - 5) * 2) / 3); 2150 } 2151 else if(CurrSS == 4) 2152 { 2153 RetSS = 36; 2154 } 2155 else if(CurrSS == 3) 2156 { 2157 RetSS = 27; 2158 } 2159 else if(CurrSS == 2) 2160 { 2161 RetSS = 18; 2162 } 2163 else if(CurrSS == 1) 2164 { 2165 RetSS = 9; 2166 } 2167 else 2168 { 2169 RetSS = CurrSS; 2170 } 2171 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2172 2173 // Step 2. Smoothing. 2174 2175 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2176 2177 return RetSS; 2178} 2179 2180long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index. 2181{ 2182 long signal_power; // in dBm. 2183 2184 // Translate to dBm (x=0.5y-95). 2185 signal_power = (long)((signal_strength_index + 1) >> 1); 2186 signal_power -= 95; 2187 2188 return signal_power; 2189} 2190 2191static inline int ieee80211_network_init( 2192 struct ieee80211_device *ieee, 2193 struct ieee80211_probe_response *beacon, 2194 struct ieee80211_network *network, 2195 struct ieee80211_rx_stats *stats) 2196{ 2197#ifdef CONFIG_IEEE80211_DEBUG 2198 //char rates_str[64]; 2199 //char *p; 2200#endif 2201 2202 network->qos_data.active = 0; 2203 network->qos_data.supported = 0; 2204 network->qos_data.param_count = 0; 2205 network->qos_data.old_param_count = 0; 2206 2207 /* Pull out fixed field data */ 2208 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); 2209 network->capability = le16_to_cpu(beacon->capability); 2210 network->last_scanned = jiffies; 2211 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); 2212 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); 2213 network->beacon_interval = le32_to_cpu(beacon->beacon_interval); 2214 /* Where to pull this? beacon->listen_interval;*/ 2215 network->listen_interval = 0x0A; 2216 network->rates_len = network->rates_ex_len = 0; 2217 network->last_associate = 0; 2218 network->ssid_len = 0; 2219 network->flags = 0; 2220 network->atim_window = 0; 2221 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? 2222 0x3 : 0x0; 2223 network->berp_info_valid = false; 2224 network->broadcom_cap_exist = false; 2225 network->ralink_cap_exist = false; 2226 network->atheros_cap_exist = false; 2227 network->cisco_cap_exist = false; 2228 network->unknown_cap_exist = false; 2229#ifdef THOMAS_TURBO 2230 network->Turbo_Enable = 0; 2231#endif 2232#ifdef ENABLE_DOT11D 2233 network->CountryIeLen = 0; 2234 memset(network->CountryIeBuf, 0, MAX_IE_LEN); 2235#endif 2236//Initialize HT parameters 2237 //ieee80211_ht_initialize(&network->bssht); 2238 HTInitializeBssDesc(&network->bssht); 2239 if (stats->freq == IEEE80211_52GHZ_BAND) { 2240 /* for A band (No DS info) */ 2241 network->channel = stats->received_channel; 2242 } else 2243 network->flags |= NETWORK_HAS_CCK; 2244 2245 network->wpa_ie_len = 0; 2246 network->rsn_ie_len = 0; 2247 2248 if (ieee80211_parse_info_param 2249 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) 2250 return 1; 2251 2252 network->mode = 0; 2253 if (stats->freq == IEEE80211_52GHZ_BAND) 2254 network->mode = IEEE_A; 2255 else { 2256 if (network->flags & NETWORK_HAS_OFDM) 2257 network->mode |= IEEE_G; 2258 if (network->flags & NETWORK_HAS_CCK) 2259 network->mode |= IEEE_B; 2260 } 2261 2262 if (network->mode == 0) { 2263 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' " 2264 "network.\n", 2265 escape_essid(network->ssid, 2266 network->ssid_len), 2267 network->bssid); 2268 return 1; 2269 } 2270 2271 if(network->bssht.bdSupportHT){ 2272 if(network->mode == IEEE_A) 2273 network->mode = IEEE_N_5G; 2274 else if(network->mode & (IEEE_G | IEEE_B)) 2275 network->mode = IEEE_N_24G; 2276 } 2277 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) 2278 network->flags |= NETWORK_EMPTY_ESSID; 2279 2280 stats->signal = 30 + (stats->SignalStrength * 70) / 100; 2281 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); 2282 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; 2283 2284 memcpy(&network->stats, stats, sizeof(network->stats)); 2285 2286 return 0; 2287} 2288 2289static inline int is_same_network(struct ieee80211_network *src, 2290 struct ieee80211_network *dst, struct ieee80211_device* ieee) 2291{ 2292 /* A network is only a duplicate if the channel, BSSID, ESSID 2293 * and the capability field (in particular IBSS and BSS) all match. 2294 * We treat all <hidden> with the same BSSID and channel 2295 * as one network */ 2296 return //((src->ssid_len == dst->ssid_len) && 2297 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2298 (src->channel == dst->channel) && 2299 !memcmp(src->bssid, dst->bssid, ETH_ALEN) && 2300 //!memcmp(src->ssid, dst->ssid, src->ssid_len) && 2301 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2302 ((src->capability & WLAN_CAPABILITY_IBSS) == 2303 (dst->capability & WLAN_CAPABILITY_IBSS)) && 2304 ((src->capability & WLAN_CAPABILITY_BSS) == 2305 (dst->capability & WLAN_CAPABILITY_BSS))); 2306} 2307 2308static inline void update_network(struct ieee80211_network *dst, 2309 struct ieee80211_network *src) 2310{ 2311 int qos_active; 2312 u8 old_param; 2313 2314 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); 2315 dst->capability = src->capability; 2316 memcpy(dst->rates, src->rates, src->rates_len); 2317 dst->rates_len = src->rates_len; 2318 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); 2319 dst->rates_ex_len = src->rates_ex_len; 2320 if(src->ssid_len > 0) 2321 { 2322 memset(dst->ssid, 0, dst->ssid_len); 2323 dst->ssid_len = src->ssid_len; 2324 memcpy(dst->ssid, src->ssid, src->ssid_len); 2325 } 2326 dst->mode = src->mode; 2327 dst->flags = src->flags; 2328 dst->time_stamp[0] = src->time_stamp[0]; 2329 dst->time_stamp[1] = src->time_stamp[1]; 2330 if (src->flags & NETWORK_HAS_ERP_VALUE) 2331 { 2332 dst->erp_value = src->erp_value; 2333 dst->berp_info_valid = src->berp_info_valid = true; 2334 } 2335 dst->beacon_interval = src->beacon_interval; 2336 dst->listen_interval = src->listen_interval; 2337 dst->atim_window = src->atim_window; 2338 dst->dtim_period = src->dtim_period; 2339 dst->dtim_data = src->dtim_data; 2340 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; 2341 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; 2342 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); 2343 2344 dst->bssht.bdSupportHT = src->bssht.bdSupportHT; 2345 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; 2346 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; 2347 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); 2348 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; 2349 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); 2350 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; 2351 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; 2352 dst->broadcom_cap_exist = src->broadcom_cap_exist; 2353 dst->ralink_cap_exist = src->ralink_cap_exist; 2354 dst->atheros_cap_exist = src->atheros_cap_exist; 2355 dst->cisco_cap_exist = src->cisco_cap_exist; 2356 dst->unknown_cap_exist = src->unknown_cap_exist; 2357 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); 2358 dst->wpa_ie_len = src->wpa_ie_len; 2359 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); 2360 dst->rsn_ie_len = src->rsn_ie_len; 2361 2362 dst->last_scanned = jiffies; 2363 /* qos related parameters */ 2364 //qos_active = src->qos_data.active; 2365 qos_active = dst->qos_data.active; 2366 //old_param = dst->qos_data.old_param_count; 2367 old_param = dst->qos_data.param_count; 2368 if(dst->flags & NETWORK_HAS_QOS_MASK) 2369 memcpy(&dst->qos_data, &src->qos_data, 2370 sizeof(struct ieee80211_qos_data)); 2371 else { 2372 dst->qos_data.supported = src->qos_data.supported; 2373 dst->qos_data.param_count = src->qos_data.param_count; 2374 } 2375 2376 if(dst->qos_data.supported == 1) { 2377 dst->QoS_Enable = 1; 2378 if(dst->ssid_len) 2379 IEEE80211_DEBUG_QOS 2380 ("QoS the network %s is QoS supported\n", 2381 dst->ssid); 2382 else 2383 IEEE80211_DEBUG_QOS 2384 ("QoS the network is QoS supported\n"); 2385 } 2386 dst->qos_data.active = qos_active; 2387 dst->qos_data.old_param_count = old_param; 2388 2389 /* dst->last_associate is not overwritten */ 2390 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. 2391 if(src->wmm_param[0].ac_aci_acm_aifsn|| \ 2392 src->wmm_param[1].ac_aci_acm_aifsn|| \ 2393 src->wmm_param[2].ac_aci_acm_aifsn|| \ 2394 src->wmm_param[1].ac_aci_acm_aifsn) { 2395 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); 2396 } 2397 //dst->QoS_Enable = src->QoS_Enable; 2398#ifdef THOMAS_TURBO 2399 dst->Turbo_Enable = src->Turbo_Enable; 2400#endif 2401 2402#ifdef ENABLE_DOT11D 2403 dst->CountryIeLen = src->CountryIeLen; 2404 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); 2405#endif 2406 2407 //added by amy for LEAP 2408 dst->bWithAironetIE = src->bWithAironetIE; 2409 dst->bCkipSupported = src->bCkipSupported; 2410 memcpy(dst->CcxRmState,src->CcxRmState,2); 2411 dst->bCcxRmEnable = src->bCcxRmEnable; 2412 dst->MBssidMask = src->MBssidMask; 2413 dst->bMBssidValid = src->bMBssidValid; 2414 memcpy(dst->MBssid,src->MBssid,6); 2415 dst->bWithCcxVerNum = src->bWithCcxVerNum; 2416 dst->BssCcxVerNumber = src->BssCcxVerNumber; 2417 2418} 2419 2420static inline int is_beacon(__le16 fc) 2421{ 2422 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); 2423} 2424 2425static inline void ieee80211_process_probe_response( 2426 struct ieee80211_device *ieee, 2427 struct ieee80211_probe_response *beacon, 2428 struct ieee80211_rx_stats *stats) 2429{ 2430 struct ieee80211_network network; 2431 struct ieee80211_network *target; 2432 struct ieee80211_network *oldest = NULL; 2433#ifdef CONFIG_IEEE80211_DEBUG 2434 struct ieee80211_info_element *info_element = &beacon->info_element[0]; 2435#endif 2436 unsigned long flags; 2437 short renew; 2438 //u8 wmm_info; 2439 2440 memset(&network, 0, sizeof(struct ieee80211_network)); 2441 IEEE80211_DEBUG_SCAN( 2442 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", 2443 escape_essid(info_element->data, info_element->len), 2444 beacon->header.addr3, 2445 (beacon->capability & (1<<0xf)) ? '1' : '0', 2446 (beacon->capability & (1<<0xe)) ? '1' : '0', 2447 (beacon->capability & (1<<0xd)) ? '1' : '0', 2448 (beacon->capability & (1<<0xc)) ? '1' : '0', 2449 (beacon->capability & (1<<0xb)) ? '1' : '0', 2450 (beacon->capability & (1<<0xa)) ? '1' : '0', 2451 (beacon->capability & (1<<0x9)) ? '1' : '0', 2452 (beacon->capability & (1<<0x8)) ? '1' : '0', 2453 (beacon->capability & (1<<0x7)) ? '1' : '0', 2454 (beacon->capability & (1<<0x6)) ? '1' : '0', 2455 (beacon->capability & (1<<0x5)) ? '1' : '0', 2456 (beacon->capability & (1<<0x4)) ? '1' : '0', 2457 (beacon->capability & (1<<0x3)) ? '1' : '0', 2458 (beacon->capability & (1<<0x2)) ? '1' : '0', 2459 (beacon->capability & (1<<0x1)) ? '1' : '0', 2460 (beacon->capability & (1<<0x0)) ? '1' : '0'); 2461 2462 if (ieee80211_network_init(ieee, beacon, &network, stats)) { 2463 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n", 2464 escape_essid(info_element->data, 2465 info_element->len), 2466 beacon->header.addr3, 2467 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2468 IEEE80211_STYPE_PROBE_RESP ? 2469 "PROBE RESPONSE" : "BEACON"); 2470 return; 2471 } 2472 2473#ifdef ENABLE_DOT11D 2474 // For Asus EeePc request, 2475 // (1) if wireless adapter receive get any 802.11d country code in AP beacon, 2476 // wireless adapter should follow the country code. 2477 // (2) If there is no any country code in beacon, 2478 // then wireless adapter should do active scan from ch1~11 and 2479 // passive scan from ch12~14 2480 2481 if( !IsLegalChannel(ieee, network.channel) ) 2482 return; 2483 if(ieee->bGlobalDomain) 2484 { 2485 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) 2486 { 2487 // Case 1: Country code 2488 if(IS_COUNTRY_IE_VALID(ieee) ) 2489 { 2490 if( !IsLegalChannel(ieee, network.channel) ) 2491 { 2492 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); 2493 return; 2494 } 2495 } 2496 // Case 2: No any country code. 2497 else 2498 { 2499 // Filter over channel ch12~14 2500 if(network.channel > 11) 2501 { 2502 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); 2503 return; 2504 } 2505 } 2506 } 2507 else 2508 { 2509 // Case 1: Country code 2510 if(IS_COUNTRY_IE_VALID(ieee) ) 2511 { 2512 if( !IsLegalChannel(ieee, network.channel) ) 2513 { 2514 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); 2515 return; 2516 } 2517 } 2518 // Case 2: No any country code. 2519 else 2520 { 2521 // Filter over channel ch12~14 2522 if(network.channel > 14) 2523 { 2524 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); 2525 return; 2526 } 2527 } 2528 } 2529 } 2530#endif 2531 2532 /* The network parsed correctly -- so now we scan our known networks 2533 * to see if we can find it in our list. 2534 * 2535 * NOTE: This search is definitely not optimized. Once its doing 2536 * the "right thing" we'll optimize it for efficiency if 2537 * necessary */ 2538 2539 /* Search for this entry in the list and update it if it is 2540 * already there. */ 2541 2542 spin_lock_irqsave(&ieee->lock, flags); 2543 2544 if(is_same_network(&ieee->current_network, &network, ieee)) { 2545 update_network(&ieee->current_network, &network); 2546 if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) 2547 && ieee->current_network.berp_info_valid){ 2548 if(ieee->current_network.erp_value& ERP_UseProtection) 2549 ieee->current_network.buseprotection = true; 2550 else 2551 ieee->current_network.buseprotection = false; 2552 } 2553 if(is_beacon(beacon->header.frame_ctl)) 2554 { 2555 if(ieee->state == IEEE80211_LINKED) 2556 ieee->LinkDetectInfo.NumRecvBcnInPeriod++; 2557 } 2558 else //hidden AP 2559 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); 2560 } 2561 2562 list_for_each_entry(target, &ieee->network_list, list) { 2563 if (is_same_network(target, &network, ieee)) 2564 break; 2565 if ((oldest == NULL) || 2566 (target->last_scanned < oldest->last_scanned)) 2567 oldest = target; 2568 } 2569 2570 /* If we didn't find a match, then get a new network slot to initialize 2571 * with this beacon's information */ 2572 if (&target->list == &ieee->network_list) { 2573 if (list_empty(&ieee->network_free_list)) { 2574 /* If there are no more slots, expire the oldest */ 2575 list_del(&oldest->list); 2576 target = oldest; 2577 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from " 2578 "network list.\n", 2579 escape_essid(target->ssid, 2580 target->ssid_len), 2581 target->bssid); 2582 } else { 2583 /* Otherwise just pull from the free list */ 2584 target = list_entry(ieee->network_free_list.next, 2585 struct ieee80211_network, list); 2586 list_del(ieee->network_free_list.next); 2587 } 2588 2589 2590#ifdef CONFIG_IEEE80211_DEBUG 2591 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n", 2592 escape_essid(network.ssid, 2593 network.ssid_len), 2594 network.bssid, 2595 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2596 IEEE80211_STYPE_PROBE_RESP ? 2597 "PROBE RESPONSE" : "BEACON"); 2598#endif 2599 memcpy(target, &network, sizeof(*target)); 2600 list_add_tail(&target->list, &ieee->network_list); 2601 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) 2602 ieee80211_softmac_new_net(ieee,&network); 2603 } else { 2604 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n", 2605 escape_essid(target->ssid, 2606 target->ssid_len), 2607 target->bssid, 2608 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2609 IEEE80211_STYPE_PROBE_RESP ? 2610 "PROBE RESPONSE" : "BEACON"); 2611 2612 /* we have an entry and we are going to update it. But this entry may 2613 * be already expired. In this case we do the same as we found a new 2614 * net and call the new_net handler 2615 */ 2616 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); 2617 //YJ,add,080819,for hidden ap 2618 if(is_beacon(beacon->header.frame_ctl) == 0) 2619 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); 2620 //if(strncmp(network.ssid, "linksys-c",9) == 0) 2621 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); 2622 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ 2623 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ 2624 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) 2625 renew = 1; 2626 //YJ,add,080819,for hidden ap,end 2627 2628 update_network(target, &network); 2629 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) 2630 ieee80211_softmac_new_net(ieee,&network); 2631 } 2632 2633 spin_unlock_irqrestore(&ieee->lock, flags); 2634 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ 2635 (ieee->state == IEEE80211_LINKED)) { 2636 if(ieee->handle_beacon != NULL) { 2637 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); 2638 } 2639 } 2640} 2641 2642void ieee80211_rx_mgt(struct ieee80211_device *ieee, 2643 struct ieee80211_hdr_4addr *header, 2644 struct ieee80211_rx_stats *stats) 2645{ 2646 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 2647 2648 case IEEE80211_STYPE_BEACON: 2649 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", 2650 WLAN_FC_GET_STYPE(header->frame_ctl)); 2651 IEEE80211_DEBUG_SCAN("Beacon\n"); 2652 ieee80211_process_probe_response( 2653 ieee, (struct ieee80211_probe_response *)header, stats); 2654 break; 2655 2656 case IEEE80211_STYPE_PROBE_RESP: 2657 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", 2658 WLAN_FC_GET_STYPE(header->frame_ctl)); 2659 IEEE80211_DEBUG_SCAN("Probe response\n"); 2660 ieee80211_process_probe_response( 2661 ieee, (struct ieee80211_probe_response *)header, stats); 2662 break; 2663 2664 } 2665} 2666 2667EXPORT_SYMBOL(ieee80211_rx_mgt); 2668EXPORT_SYMBOL(ieee80211_rx); 2669