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