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/errno.h> 26 #include <linux/if_arp.h> 27 #include <linux/in6.h> 28 #include <linux/in.h> 29 #include <linux/ip.h> 30 #include <linux/kernel.h> 31 #include <linux/module.h> 32 #include <linux/netdevice.h> 33 #include <linux/pci.h> 34 #include <linux/proc_fs.h> 35 #include <linux/skbuff.h> 36 #include <linux/slab.h> 37 #include <linux/tcp.h> 38 #include <linux/types.h> 39 #include <linux/wireless.h> 40 #include <linux/etherdevice.h> 41 #include <linux/uaccess.h> 42 #include <linux/ctype.h> 43 44 #include "ieee80211.h" 45 #include "dot11d.h" 46 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, 47 struct sk_buff *skb, 48 struct ieee80211_rx_stats *rx_stats) 49 { 50 struct rtl_80211_hdr_4addr *hdr = (struct rtl_80211_hdr_4addr *)skb->data; 51 u16 fc = le16_to_cpu(hdr->frame_ctl); 52 53 skb->dev = ieee->dev; 54 skb_reset_mac_header(skb); 55 56 skb_pull(skb, ieee80211_get_hdrlen(fc)); 57 skb->pkt_type = PACKET_OTHERHOST; 58 skb->protocol = htons(ETH_P_80211_RAW); 59 memset(skb->cb, 0, sizeof(skb->cb)); 60 netif_rx(skb); 61 } 62 63 64 /* Called only as a tasklet (software IRQ) */ 65 static struct ieee80211_frag_entry * 66 ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, 67 unsigned int frag, u8 tid, u8 *src, u8 *dst) 68 { 69 struct ieee80211_frag_entry *entry; 70 int i; 71 72 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { 73 entry = &ieee->frag_cache[tid][i]; 74 if (entry->skb != NULL && 75 time_after(jiffies, entry->first_frag_time + 2 * HZ)) { 76 IEEE80211_DEBUG_FRAG( 77 "expiring fragment cache entry " 78 "seq=%u last_frag=%u\n", 79 entry->seq, entry->last_frag); 80 dev_kfree_skb_any(entry->skb); 81 entry->skb = NULL; 82 } 83 84 if (entry->skb != NULL && entry->seq == seq && 85 (entry->last_frag + 1 == frag || frag == -1) && 86 memcmp(entry->src_addr, src, ETH_ALEN) == 0 && 87 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) 88 return entry; 89 } 90 91 return NULL; 92 } 93 94 /* Called only as a tasklet (software IRQ) */ 95 static struct sk_buff * 96 ieee80211_frag_cache_get(struct ieee80211_device *ieee, 97 struct rtl_80211_hdr_4addr *hdr) 98 { 99 struct sk_buff *skb = NULL; 100 u16 fc = le16_to_cpu(hdr->frame_ctl); 101 u16 sc = le16_to_cpu(hdr->seq_ctl); 102 unsigned int frag = WLAN_GET_SEQ_FRAG(sc); 103 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 104 struct ieee80211_frag_entry *entry; 105 struct rtl_80211_hdr_3addrqos *hdr_3addrqos; 106 struct rtl_80211_hdr_4addrqos *hdr_4addrqos; 107 u8 tid; 108 109 if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 110 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr; 111 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 112 tid = UP2AC(tid); 113 tid ++; 114 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 115 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr; 116 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 117 tid = UP2AC(tid); 118 tid ++; 119 } else { 120 tid = 0; 121 } 122 123 if (frag == 0) { 124 /* Reserve enough space to fit maximum frame length */ 125 skb = dev_alloc_skb(ieee->dev->mtu + 126 sizeof(struct rtl_80211_hdr_4addr) + 127 8 /* LLC */ + 128 2 /* alignment */ + 129 8 /* WEP */ + 130 ETH_ALEN /* WDS */ + 131 (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); 132 if (!skb) 133 return NULL; 134 135 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; 136 ieee->frag_next_idx[tid]++; 137 if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) 138 ieee->frag_next_idx[tid] = 0; 139 140 if (entry->skb != NULL) 141 dev_kfree_skb_any(entry->skb); 142 143 entry->first_frag_time = jiffies; 144 entry->seq = seq; 145 entry->last_frag = frag; 146 entry->skb = skb; 147 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); 148 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); 149 } else { 150 /* received a fragment of a frame for which the head fragment 151 * should have already been received */ 152 entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, 153 hdr->addr1); 154 if (entry != NULL) { 155 entry->last_frag = frag; 156 skb = entry->skb; 157 } 158 } 159 160 return skb; 161 } 162 163 164 /* Called only as a tasklet (software IRQ) */ 165 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, 166 struct rtl_80211_hdr_4addr *hdr) 167 { 168 u16 fc = le16_to_cpu(hdr->frame_ctl); 169 u16 sc = le16_to_cpu(hdr->seq_ctl); 170 unsigned int seq = WLAN_GET_SEQ_SEQ(sc); 171 struct ieee80211_frag_entry *entry; 172 struct rtl_80211_hdr_3addrqos *hdr_3addrqos; 173 struct rtl_80211_hdr_4addrqos *hdr_4addrqos; 174 u8 tid; 175 176 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 177 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)hdr; 178 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 179 tid = UP2AC(tid); 180 tid ++; 181 } else if (IEEE80211_QOS_HAS_SEQ(fc)) { 182 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)hdr; 183 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 184 tid = UP2AC(tid); 185 tid ++; 186 } else { 187 tid = 0; 188 } 189 190 entry = ieee80211_frag_cache_find(ieee, seq, -1, tid, hdr->addr2, 191 hdr->addr1); 192 193 if (entry == NULL) { 194 IEEE80211_DEBUG_FRAG( 195 "could not invalidate fragment cache " 196 "entry (seq=%u)\n", seq); 197 return -1; 198 } 199 200 entry->skb = NULL; 201 return 0; 202 } 203 204 205 206 /* ieee80211_rx_frame_mgtmt 207 * 208 * Responsible for handling management control frames 209 * 210 * Called by ieee80211_rx */ 211 static inline int 212 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, 213 struct ieee80211_rx_stats *rx_stats, u16 type, 214 u16 stype) 215 { 216 /* On the struct stats definition there is written that 217 * this is not mandatory.... but seems that the probe 218 * response parser uses it 219 */ 220 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; 221 222 rx_stats->len = skb->len; 223 ieee80211_rx_mgt(ieee,(struct rtl_80211_hdr_4addr *)skb->data,rx_stats); 224 /* if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) */ 225 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))/* use ADDR1 to perform address matching for Management frames */ 226 { 227 dev_kfree_skb_any(skb); 228 return 0; 229 } 230 231 ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); 232 233 dev_kfree_skb_any(skb); 234 235 return 0; 236 237 #ifdef NOT_YET 238 if (ieee->iw_mode == IW_MODE_MASTER) { 239 printk(KERN_DEBUG "%s: Master mode not yet supported.\n", 240 ieee->dev->name); 241 return 0; 242 /* 243 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) 244 skb->data);*/ 245 } 246 247 if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) { 248 if (stype == WLAN_FC_STYPE_BEACON && 249 ieee->iw_mode == IW_MODE_MASTER) { 250 struct sk_buff *skb2; 251 /* Process beacon frames also in kernel driver to 252 * update STA(AP) table statistics */ 253 skb2 = skb_clone(skb, GFP_ATOMIC); 254 if (skb2) 255 hostap_rx(skb2->dev, skb2, rx_stats); 256 } 257 258 /* send management frames to the user space daemon for 259 * processing */ 260 ieee->apdevstats.rx_packets++; 261 ieee->apdevstats.rx_bytes += skb->len; 262 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); 263 return 0; 264 } 265 266 if (ieee->iw_mode == IW_MODE_MASTER) { 267 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { 268 printk(KERN_DEBUG "%s: unknown management frame " 269 "(type=0x%02x, stype=0x%02x) dropped\n", 270 skb->dev->name, type, stype); 271 return -1; 272 } 273 274 hostap_rx(skb->dev, skb, rx_stats); 275 return 0; 276 } 277 278 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " 279 "received in non-Host AP mode\n", skb->dev->name); 280 return -1; 281 #endif 282 } 283 284 285 286 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ 287 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ 288 static unsigned char rfc1042_header[] = 289 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 290 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ 291 static unsigned char bridge_tunnel_header[] = 292 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; 293 /* No encapsulation header if EtherType < 0x600 (=length) */ 294 295 /* Called by ieee80211_rx_frame_decrypt */ 296 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, 297 struct sk_buff *skb, size_t hdrlen) 298 { 299 struct net_device *dev = ieee->dev; 300 u16 fc, ethertype; 301 struct rtl_80211_hdr_4addr *hdr; 302 u8 *pos; 303 304 if (skb->len < 24) 305 return 0; 306 307 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 308 fc = le16_to_cpu(hdr->frame_ctl); 309 310 /* check that the frame is unicast frame to us */ 311 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 312 IEEE80211_FCTL_TODS && 313 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && 314 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { 315 /* ToDS frame with own addr BSSID and DA */ 316 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == 317 IEEE80211_FCTL_FROMDS && 318 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { 319 /* FromDS frame with own addr as DA */ 320 } else 321 return 0; 322 323 if (skb->len < 24 + 8) 324 return 0; 325 326 /* check for port access entity Ethernet type */ 327 // pos = skb->data + 24; 328 pos = skb->data + hdrlen; 329 ethertype = (pos[6] << 8) | pos[7]; 330 if (ethertype == ETH_P_PAE) 331 return 1; 332 333 return 0; 334 } 335 336 /* Called only as a tasklet (software IRQ), by ieee80211_rx */ 337 static inline int 338 ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb, 339 struct ieee80211_crypt_data *crypt) 340 { 341 struct rtl_80211_hdr_4addr *hdr; 342 int res, hdrlen; 343 344 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) 345 return 0; 346 if (ieee->hwsec_active) 347 { 348 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 349 tcb_desc->bHwSec = 1; 350 } 351 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 352 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 353 354 if (ieee->tkip_countermeasures && 355 strcmp(crypt->ops->name, "TKIP") == 0) { 356 if (net_ratelimit()) { 357 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " 358 "received packet from %pM\n", 359 ieee->dev->name, hdr->addr2); 360 } 361 return -1; 362 } 363 364 atomic_inc(&crypt->refcnt); 365 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); 366 atomic_dec(&crypt->refcnt); 367 if (res < 0) { 368 IEEE80211_DEBUG_DROP( 369 "decryption failed (SA=%pM" 370 ") res=%d\n", hdr->addr2, res); 371 if (res == -2) 372 IEEE80211_DEBUG_DROP("Decryption failed ICV " 373 "mismatch (key %d)\n", 374 skb->data[hdrlen + 3] >> 6); 375 ieee->ieee_stats.rx_discards_undecryptable++; 376 return -1; 377 } 378 379 return res; 380 } 381 382 383 /* Called only as a tasklet (software IRQ), by ieee80211_rx */ 384 static inline int 385 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb, 386 int keyidx, struct ieee80211_crypt_data *crypt) 387 { 388 struct rtl_80211_hdr_4addr *hdr; 389 int res, hdrlen; 390 391 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) 392 return 0; 393 if (ieee->hwsec_active) 394 { 395 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); 396 tcb_desc->bHwSec = 1; 397 } 398 399 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 400 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); 401 402 atomic_inc(&crypt->refcnt); 403 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); 404 atomic_dec(&crypt->refcnt); 405 if (res < 0) { 406 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" 407 " (SA=%pM keyidx=%d)\n", 408 ieee->dev->name, hdr->addr2, keyidx); 409 return -1; 410 } 411 412 return 0; 413 } 414 415 416 /* this function is stolen from ipw2200 driver*/ 417 #define IEEE_PACKET_RETRY_TIME (5*HZ) 418 static int is_duplicate_packet(struct ieee80211_device *ieee, 419 struct rtl_80211_hdr_4addr *header) 420 { 421 u16 fc = le16_to_cpu(header->frame_ctl); 422 u16 sc = le16_to_cpu(header->seq_ctl); 423 u16 seq = WLAN_GET_SEQ_SEQ(sc); 424 u16 frag = WLAN_GET_SEQ_FRAG(sc); 425 u16 *last_seq, *last_frag; 426 unsigned long *last_time; 427 struct rtl_80211_hdr_3addrqos *hdr_3addrqos; 428 struct rtl_80211_hdr_4addrqos *hdr_4addrqos; 429 u8 tid; 430 431 432 //TO2DS and QoS 433 if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { 434 hdr_4addrqos = (struct rtl_80211_hdr_4addrqos *)header; 435 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; 436 tid = UP2AC(tid); 437 tid ++; 438 } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS 439 hdr_3addrqos = (struct rtl_80211_hdr_3addrqos *)header; 440 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; 441 tid = UP2AC(tid); 442 tid ++; 443 } else { // no QoS 444 tid = 0; 445 } 446 447 switch (ieee->iw_mode) { 448 case IW_MODE_ADHOC: 449 { 450 struct list_head *p; 451 struct ieee_ibss_seq *entry = NULL; 452 u8 *mac = header->addr2; 453 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; 454 455 list_for_each(p, &ieee->ibss_mac_hash[index]) { 456 entry = list_entry(p, struct ieee_ibss_seq, list); 457 if (!memcmp(entry->mac, mac, ETH_ALEN)) 458 break; 459 } 460 // if (memcmp(entry->mac, mac, ETH_ALEN)){ 461 if (p == &ieee->ibss_mac_hash[index]) { 462 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); 463 if (!entry) 464 return 0; 465 memcpy(entry->mac, mac, ETH_ALEN); 466 entry->seq_num[tid] = seq; 467 entry->frag_num[tid] = frag; 468 entry->packet_time[tid] = jiffies; 469 list_add(&entry->list, &ieee->ibss_mac_hash[index]); 470 return 0; 471 } 472 last_seq = &entry->seq_num[tid]; 473 last_frag = &entry->frag_num[tid]; 474 last_time = &entry->packet_time[tid]; 475 break; 476 } 477 478 case IW_MODE_INFRA: 479 last_seq = &ieee->last_rxseq_num[tid]; 480 last_frag = &ieee->last_rxfrag_num[tid]; 481 last_time = &ieee->last_packet_time[tid]; 482 483 break; 484 default: 485 return 0; 486 } 487 488 // if(tid != 0) { 489 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); 490 // } 491 if ((*last_seq == seq) && 492 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { 493 if (*last_frag == frag) 494 goto drop; 495 if (*last_frag + 1 != frag) 496 /* out-of-order fragment */ 497 goto drop; 498 } else 499 *last_seq = seq; 500 501 *last_frag = frag; 502 *last_time = jiffies; 503 return 0; 504 505 drop: 506 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); 507 508 return 1; 509 } 510 511 static bool AddReorderEntry(PRX_TS_RECORD pTS, PRX_REORDER_ENTRY pReorderEntry) 512 { 513 struct list_head *pList = &pTS->RxPendingPktList; 514 while(pList->next != &pTS->RxPendingPktList) 515 { 516 if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 517 { 518 pList = pList->next; 519 } 520 else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) 521 { 522 return false; 523 } 524 else 525 { 526 break; 527 } 528 } 529 pReorderEntry->List.next = pList->next; 530 pReorderEntry->List.next->prev = &pReorderEntry->List; 531 pReorderEntry->List.prev = pList; 532 pList->next = &pReorderEntry->List; 533 534 return true; 535 } 536 537 void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb **prxbIndicateArray,u8 index) 538 { 539 u8 i = 0 , j=0; 540 u16 ethertype; 541 // if(index > 1) 542 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__func__,index); 543 for(j = 0; j<index; j++) 544 { 545 //added by amy for reorder 546 struct ieee80211_rxb *prxb = prxbIndicateArray[j]; 547 for(i = 0; i<prxb->nr_subframes; i++) { 548 struct sk_buff *sub_skb = prxb->subframes[i]; 549 550 /* convert hdr + possible LLC headers into Ethernet header */ 551 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 552 if (sub_skb->len >= 8 && 553 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 554 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 555 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 556 /* remove RFC1042 or Bridge-Tunnel encapsulation and 557 * replace EtherType */ 558 skb_pull(sub_skb, SNAP_SIZE); 559 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 560 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 561 } else { 562 u16 len; 563 /* Leave Ethernet header part of hdr and full payload */ 564 len = htons(sub_skb->len); 565 memcpy(skb_push(sub_skb, 2), &len, 2); 566 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); 567 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); 568 } 569 //stats->rx_packets++; 570 //stats->rx_bytes += sub_skb->len; 571 572 /* Indicat the packets to upper layer */ 573 if (sub_skb) { 574 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); 575 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 576 sub_skb->dev = ieee->dev; 577 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 578 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 579 ieee->last_rx_ps_time = jiffies; 580 netif_rx(sub_skb); 581 } 582 } 583 kfree(prxb); 584 prxb = NULL; 585 } 586 } 587 588 589 static void RxReorderIndicatePacket(struct ieee80211_device *ieee, 590 struct ieee80211_rxb *prxb, 591 PRX_TS_RECORD pTS, u16 SeqNum) 592 { 593 PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; 594 PRX_REORDER_ENTRY pReorderEntry = NULL; 595 struct ieee80211_rxb **prxbIndicateArray; 596 u8 WinSize = pHTInfo->RxReorderWinSize; 597 u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; 598 u8 index = 0; 599 bool bMatchWinStart = false, bPktInBuf = false; 600 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize); 601 602 prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) * 603 REORDER_WIN_SIZE, GFP_KERNEL); 604 if (!prxbIndicateArray) 605 return; 606 607 /* Rx Reorder initialize condition.*/ 608 if (pTS->RxIndicateSeq == 0xffff) { 609 pTS->RxIndicateSeq = SeqNum; 610 } 611 612 /* Drop out the packet which SeqNum is smaller than WinStart */ 613 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) { 614 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", 615 pTS->RxIndicateSeq, SeqNum); 616 pHTInfo->RxReorderDropCounter++; 617 { 618 int i; 619 for(i =0; i < prxb->nr_subframes; i++) { 620 dev_kfree_skb(prxb->subframes[i]); 621 } 622 kfree(prxb); 623 prxb = NULL; 624 } 625 626 kfree(prxbIndicateArray); 627 return; 628 } 629 630 /* 631 * Sliding window manipulation. Conditions includes: 632 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 633 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N 634 */ 635 if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { 636 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 637 bMatchWinStart = true; 638 } else if(SN_LESS(WinEnd, SeqNum)) { 639 if(SeqNum >= (WinSize - 1)) { 640 pTS->RxIndicateSeq = SeqNum + 1 -WinSize; 641 } else { 642 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; 643 } 644 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 645 } 646 647 /* 648 * Indication process. 649 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets 650 * with the SeqNum smaller than latest WinStart and buffer other packets. 651 */ 652 /* For Rx Reorder condition: 653 * 1. All packets with SeqNum smaller than WinStart => Indicate 654 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. 655 */ 656 if(bMatchWinStart) { 657 /* Current packet is going to be indicated.*/ 658 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ 659 pTS->RxIndicateSeq, SeqNum); 660 prxbIndicateArray[0] = prxb; 661 // printk("========================>%s(): SeqNum is %d\n",__func__,SeqNum); 662 index = 1; 663 } else { 664 /* Current packet is going to be inserted into pending list.*/ 665 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__func__); 666 if(!list_empty(&ieee->RxReorder_Unused_List)) { 667 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); 668 list_del_init(&pReorderEntry->List); 669 670 /* Make a reorder entry and insert into a the packet list.*/ 671 pReorderEntry->SeqNum = SeqNum; 672 pReorderEntry->prxb = prxb; 673 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum); 674 675 if(!AddReorderEntry(pTS, pReorderEntry)) { 676 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", 677 __func__, pTS->RxIndicateSeq, SeqNum); 678 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 679 { 680 int i; 681 for(i =0; i < prxb->nr_subframes; i++) { 682 dev_kfree_skb(prxb->subframes[i]); 683 } 684 kfree(prxb); 685 prxb = NULL; 686 } 687 } else { 688 IEEE80211_DEBUG(IEEE80211_DL_REORDER, 689 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 690 } 691 } 692 else { 693 /* 694 * Packets are dropped if there is not enough reorder entries. 695 * This part shall be modified!! We can just indicate all the 696 * packets in buffer and get reorder entries. 697 */ 698 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); 699 { 700 int i; 701 for(i =0; i < prxb->nr_subframes; i++) { 702 dev_kfree_skb(prxb->subframes[i]); 703 } 704 kfree(prxb); 705 prxb = NULL; 706 } 707 } 708 } 709 710 /* Check if there is any packet need indicate.*/ 711 while(!list_empty(&pTS->RxPendingPktList)) { 712 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__func__); 713 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); 714 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || 715 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 716 { 717 /* This protect buffer from overflow. */ 718 if (index >= REORDER_WIN_SIZE) { 719 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); 720 bPktInBuf = true; 721 break; 722 } 723 724 list_del_init(&pReorderEntry->List); 725 726 if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) 727 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; 728 729 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); 730 prxbIndicateArray[index] = pReorderEntry->prxb; 731 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum); 732 index++; 733 734 list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); 735 } else { 736 bPktInBuf = true; 737 break; 738 } 739 } 740 741 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ 742 if (index>0) { 743 // Cancel previous pending timer. 744 // del_timer_sync(&pTS->RxPktPendingTimer); 745 pTS->RxTimeoutIndicateSeq = 0xffff; 746 747 // Indicate packets 748 if(index>REORDER_WIN_SIZE){ 749 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n"); 750 kfree(prxbIndicateArray); 751 return; 752 } 753 ieee80211_indicate_packets(ieee, prxbIndicateArray, index); 754 } 755 756 if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { 757 // Set new pending timer. 758 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __func__); 759 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; 760 if(timer_pending(&pTS->RxPktPendingTimer)) 761 del_timer_sync(&pTS->RxPktPendingTimer); 762 pTS->RxPktPendingTimer.expires = jiffies + 763 msecs_to_jiffies(pHTInfo->RxReorderPendingTime); 764 add_timer(&pTS->RxPktPendingTimer); 765 } 766 767 kfree(prxbIndicateArray); 768 } 769 770 static u8 parse_subframe(struct sk_buff *skb, 771 struct ieee80211_rx_stats *rx_stats, 772 struct ieee80211_rxb *rxb, u8 *src, u8 *dst) 773 { 774 struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; 775 u16 fc = le16_to_cpu(hdr->frame_ctl); 776 777 u16 LLCOffset= sizeof(struct rtl_80211_hdr_3addr); 778 u16 ChkLength; 779 bool bIsAggregateFrame = false; 780 u16 nSubframe_Length; 781 u8 nPadding_Length = 0; 782 u16 SeqNum=0; 783 784 struct sk_buff *sub_skb; 785 u8 *data_ptr; 786 /* just for debug purpose */ 787 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); 788 789 if ((IEEE80211_QOS_HAS_SEQ(fc))&&\ 790 (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { 791 bIsAggregateFrame = true; 792 } 793 794 if (IEEE80211_QOS_HAS_SEQ(fc)) { 795 LLCOffset += 2; 796 } 797 798 if (rx_stats->bContainHTC) { 799 LLCOffset += sHTCLng; 800 } 801 // Null packet, don't indicate it to upper layer 802 ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ 803 804 if (skb->len <= ChkLength) 805 return 0; 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). */ 889 int 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 rtl_80211_hdr_4addr *hdr; 894 //struct rtl_80211_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 net_device *wds = NULL; 911 int from_assoc_ap = 0; 912 void *sta = NULL; 913 #endif 914 // u16 qos_ctl = 0; 915 u8 dst[ETH_ALEN]; 916 u8 src[ETH_ALEN]; 917 u8 bssid[ETH_ALEN]; 918 struct ieee80211_crypt_data *crypt = NULL; 919 int keyidx = 0; 920 921 int i; 922 struct ieee80211_rxb *rxb = NULL; 923 // cheat the the hdr type 924 hdr = (struct rtl_80211_hdr_4addr *)skb->data; 925 stats = &ieee->stats; 926 927 if (skb->len < 10) { 928 printk(KERN_INFO "%s: SKB length < 10\n", 929 dev->name); 930 goto rx_dropped; 931 } 932 933 fc = le16_to_cpu(hdr->frame_ctl); 934 type = WLAN_FC_GET_TYPE(fc); 935 stype = WLAN_FC_GET_STYPE(fc); 936 sc = le16_to_cpu(hdr->seq_ctl); 937 938 frag = WLAN_GET_SEQ_FRAG(sc); 939 hdrlen = ieee80211_get_hdrlen(fc); 940 941 if (HTCCheck(ieee, skb->data)) 942 { 943 if(net_ratelimit()) 944 printk("find HTCControl\n"); 945 hdrlen += 4; 946 rx_stats->bContainHTC = true; 947 } 948 949 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 950 #ifdef NOT_YET 951 /* Put this code here so that we avoid duplicating it in all 952 * Rx paths. - Jean II */ 953 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ 954 /* If spy monitoring on */ 955 if (iface->spy_data.spy_number > 0) { 956 struct iw_quality wstats; 957 wstats.level = rx_stats->rssi; 958 wstats.noise = rx_stats->noise; 959 wstats.updated = 6; /* No qual value */ 960 /* Update spy records */ 961 wireless_spy_update(dev, hdr->addr2, &wstats); 962 } 963 #endif /* IW_WIRELESS_SPY */ 964 hostap_update_rx_stats(local->ap, hdr, rx_stats); 965 #endif 966 967 if (ieee->iw_mode == IW_MODE_MONITOR) { 968 ieee80211_monitor_rx(ieee, skb, rx_stats); 969 stats->rx_packets++; 970 stats->rx_bytes += skb->len; 971 return 1; 972 } 973 974 if (ieee->host_decrypt) { 975 int idx = 0; 976 if (skb->len >= hdrlen + 3) 977 idx = skb->data[hdrlen + 3] >> 6; 978 crypt = ieee->crypt[idx]; 979 #ifdef NOT_YET 980 sta = NULL; 981 982 /* Use station specific key to override default keys if the 983 * receiver address is a unicast address ("individual RA"). If 984 * bcrx_sta_key parameter is set, station specific key is used 985 * even with broad/multicast targets (this is against IEEE 986 * 802.11, but makes it easier to use different keys with 987 * stations that do not support WEP key mapping). */ 988 989 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) 990 (void) hostap_handle_sta_crypto(local, hdr, &crypt, 991 &sta); 992 #endif 993 994 /* allow NULL decrypt to indicate an station specific override 995 * for default encryption */ 996 if (crypt && (crypt->ops == NULL || 997 crypt->ops->decrypt_mpdu == NULL)) 998 crypt = NULL; 999 1000 if (!crypt && (fc & IEEE80211_FCTL_WEP)) { 1001 /* This seems to be triggered by some (multicast?) 1002 * frames from other than current BSS, so just drop the 1003 * frames silently instead of filling system log with 1004 * these reports. */ 1005 IEEE80211_DEBUG_DROP("Decryption failed (not set)" 1006 " (SA=%pM)\n", 1007 hdr->addr2); 1008 ieee->ieee_stats.rx_discards_undecryptable++; 1009 goto rx_dropped; 1010 } 1011 } 1012 1013 if (skb->len < IEEE80211_DATA_HDR3_LEN) 1014 goto rx_dropped; 1015 1016 // if QoS enabled, should check the sequence for each of the AC 1017 if ((!ieee->pHTInfo->bCurRxReorderEnable) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) { 1018 if (is_duplicate_packet(ieee, hdr)) 1019 goto rx_dropped; 1020 1021 } 1022 else 1023 { 1024 PRX_TS_RECORD pRxTS = NULL; 1025 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid); 1026 if(GetTs( 1027 ieee, 1028 (PTS_COMMON_INFO *) &pRxTS, 1029 hdr->addr2, 1030 Frame_QoSTID((u8 *)(skb->data)), 1031 RX_DIR, 1032 true)) 1033 { 1034 1035 // 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)); 1036 if ((fc & (1<<11)) && 1037 (frag == pRxTS->RxLastFragNum) && 1038 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) { 1039 goto rx_dropped; 1040 } 1041 else 1042 { 1043 pRxTS->RxLastFragNum = frag; 1044 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); 1045 } 1046 } 1047 else 1048 { 1049 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__func__); 1050 goto rx_dropped; 1051 } 1052 } 1053 if (type == IEEE80211_FTYPE_MGMT) { 1054 1055 1056 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1057 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) 1058 goto rx_dropped; 1059 else 1060 goto rx_exit; 1061 } 1062 1063 /* Data frame - extract src/dst addresses */ 1064 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { 1065 case IEEE80211_FCTL_FROMDS: 1066 memcpy(dst, hdr->addr1, ETH_ALEN); 1067 memcpy(src, hdr->addr3, ETH_ALEN); 1068 memcpy(bssid, hdr->addr2, ETH_ALEN); 1069 break; 1070 case IEEE80211_FCTL_TODS: 1071 memcpy(dst, hdr->addr3, ETH_ALEN); 1072 memcpy(src, hdr->addr2, ETH_ALEN); 1073 memcpy(bssid, hdr->addr1, ETH_ALEN); 1074 break; 1075 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: 1076 if (skb->len < IEEE80211_DATA_HDR4_LEN) 1077 goto rx_dropped; 1078 memcpy(dst, hdr->addr3, ETH_ALEN); 1079 memcpy(src, hdr->addr4, ETH_ALEN); 1080 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); 1081 break; 1082 default: 1083 memcpy(dst, hdr->addr1, ETH_ALEN); 1084 memcpy(src, hdr->addr2, ETH_ALEN); 1085 memcpy(bssid, hdr->addr3, ETH_ALEN); 1086 break; 1087 } 1088 1089 #ifdef NOT_YET 1090 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds)) 1091 goto rx_dropped; 1092 if (wds) { 1093 skb->dev = dev = wds; 1094 stats = hostap_get_stats(dev); 1095 } 1096 1097 if (ieee->iw_mode == IW_MODE_MASTER && !wds && 1098 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS && 1099 ieee->stadev && 1100 memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) { 1101 /* Frame from BSSID of the AP for which we are a client */ 1102 skb->dev = dev = ieee->stadev; 1103 stats = hostap_get_stats(dev); 1104 from_assoc_ap = 1; 1105 } 1106 1107 if ((ieee->iw_mode == IW_MODE_MASTER || 1108 ieee->iw_mode == IW_MODE_REPEAT) && 1109 !from_assoc_ap) { 1110 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, 1111 wds != NULL)) { 1112 case AP_RX_CONTINUE_NOT_AUTHORIZED: 1113 case AP_RX_CONTINUE: 1114 break; 1115 case AP_RX_DROP: 1116 goto rx_dropped; 1117 case AP_RX_EXIT: 1118 goto rx_exit; 1119 } 1120 } 1121 #endif 1122 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1123 /* Nullfunc frames may have PS-bit set, so they must be passed to 1124 * hostap_handle_sta_rx() before being dropped here. */ 1125 if (stype != IEEE80211_STYPE_DATA && 1126 stype != IEEE80211_STYPE_DATA_CFACK && 1127 stype != IEEE80211_STYPE_DATA_CFPOLL && 1128 stype != IEEE80211_STYPE_DATA_CFACKPOLL&& 1129 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 1130 ) { 1131 if (stype != IEEE80211_STYPE_NULLFUNC) 1132 IEEE80211_DEBUG_DROP( 1133 "RX: dropped data frame " 1134 "with no data (type=0x%02x, " 1135 "subtype=0x%02x, len=%d)\n", 1136 type, stype, skb->len); 1137 goto rx_dropped; 1138 } 1139 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) 1140 goto rx_dropped; 1141 1142 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ 1143 1144 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1145 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) 1146 { 1147 printk("decrypt frame error\n"); 1148 goto rx_dropped; 1149 } 1150 1151 1152 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1153 1154 /* skb: hdr + (possibly fragmented) plaintext payload */ 1155 // PR: FIXME: hostap has additional conditions in the "if" below: 1156 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1157 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { 1158 int flen; 1159 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); 1160 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); 1161 1162 if (!frag_skb) { 1163 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, 1164 "Rx cannot get skb from fragment " 1165 "cache (morefrag=%d seq=%u frag=%u)\n", 1166 (fc & IEEE80211_FCTL_MOREFRAGS) != 0, 1167 WLAN_GET_SEQ_SEQ(sc), frag); 1168 goto rx_dropped; 1169 } 1170 flen = skb->len; 1171 if (frag != 0) 1172 flen -= hdrlen; 1173 1174 if (frag_skb->tail + flen > frag_skb->end) { 1175 printk(KERN_WARNING "%s: host decrypted and " 1176 "reassembled frame did not fit skb\n", 1177 dev->name); 1178 ieee80211_frag_cache_invalidate(ieee, hdr); 1179 goto rx_dropped; 1180 } 1181 1182 if (frag == 0) { 1183 /* copy first fragment (including full headers) into 1184 * beginning of the fragment cache skb */ 1185 memcpy(skb_put(frag_skb, flen), skb->data, flen); 1186 } else { 1187 /* append frame payload to the end of the fragment 1188 * cache skb */ 1189 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, 1190 flen); 1191 } 1192 dev_kfree_skb_any(skb); 1193 skb = NULL; 1194 1195 if (fc & IEEE80211_FCTL_MOREFRAGS) { 1196 /* more fragments expected - leave the skb in fragment 1197 * cache for now; it will be delivered to upper layers 1198 * after all fragments have been received */ 1199 goto rx_exit; 1200 } 1201 1202 /* this was the last fragment and the frame will be 1203 * delivered, so remove skb from fragment cache */ 1204 skb = frag_skb; 1205 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1206 ieee80211_frag_cache_invalidate(ieee, hdr); 1207 } 1208 1209 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still 1210 * encrypted/authenticated */ 1211 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1212 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) 1213 { 1214 printk("==>decrypt msdu error\n"); 1215 goto rx_dropped; 1216 } 1217 1218 //added by amy for AP roaming 1219 ieee->LinkDetectInfo.NumRecvDataInPeriod++; 1220 ieee->LinkDetectInfo.NumRxOkInPeriod++; 1221 1222 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1223 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { 1224 if (/*ieee->ieee802_1x &&*/ 1225 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1226 1227 #ifdef CONFIG_IEEE80211_DEBUG 1228 /* pass unencrypted EAPOL frames even if encryption is 1229 * configured */ 1230 struct eapol *eap = (struct eapol *)(skb->data + 1231 24); 1232 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1233 eap_get_type(eap->type)); 1234 #endif 1235 } else { 1236 IEEE80211_DEBUG_DROP( 1237 "encryption configured, but RX " 1238 "frame not encrypted (SA=%pM)\n", 1239 hdr->addr2); 1240 goto rx_dropped; 1241 } 1242 } 1243 1244 #ifdef CONFIG_IEEE80211_DEBUG 1245 if (crypt && !(fc & IEEE80211_FCTL_WEP) && 1246 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1247 struct eapol *eap = (struct eapol *)(skb->data + 1248 24); 1249 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1250 eap_get_type(eap->type)); 1251 } 1252 #endif 1253 1254 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && 1255 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1256 IEEE80211_DEBUG_DROP( 1257 "dropped unencrypted RX data " 1258 "frame from %pM" 1259 " (drop_unencrypted=1)\n", 1260 hdr->addr2); 1261 goto rx_dropped; 1262 } 1263 /* 1264 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1265 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); 1266 } 1267 */ 1268 //added by amy for reorder 1269 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) 1270 && !is_multicast_ether_addr(hdr->addr1)) 1271 { 1272 TID = Frame_QoSTID(skb->data); 1273 SeqNum = WLAN_GET_SEQ_SEQ(sc); 1274 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true); 1275 if (TID !=0 && TID !=3) 1276 { 1277 ieee->bis_any_nonbepkts = true; 1278 } 1279 } 1280 //added by amy for reorder 1281 /* skb: hdr + (possible reassembled) full plaintext payload */ 1282 payload = skb->data + hdrlen; 1283 //ethertype = (payload[6] << 8) | payload[7]; 1284 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); 1285 if (!rxb) 1286 goto rx_dropped; 1287 /* to parse amsdu packets */ 1288 /* qos data packets & reserved bit is 1 */ 1289 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) { 1290 /* only to free rxb, and not submit the packets to upper layer */ 1291 for(i =0; i < rxb->nr_subframes; i++) { 1292 dev_kfree_skb(rxb->subframes[i]); 1293 } 1294 kfree(rxb); 1295 rxb = NULL; 1296 goto rx_dropped; 1297 } 1298 1299 //added by amy for reorder 1300 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){ 1301 //added by amy for reorder 1302 for(i = 0; i<rxb->nr_subframes; i++) { 1303 struct sk_buff *sub_skb = rxb->subframes[i]; 1304 1305 if (sub_skb) { 1306 /* convert hdr + possible LLC headers into Ethernet header */ 1307 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 1308 if (sub_skb->len >= 8 && 1309 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 1310 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 1311 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 1312 /* remove RFC1042 or Bridge-Tunnel encapsulation and 1313 * replace EtherType */ 1314 skb_pull(sub_skb, SNAP_SIZE); 1315 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1316 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1317 } else { 1318 u16 len; 1319 /* Leave Ethernet header part of hdr and full payload */ 1320 len = htons(sub_skb->len); 1321 memcpy(skb_push(sub_skb, 2), &len, 2); 1322 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1323 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1324 } 1325 1326 stats->rx_packets++; 1327 stats->rx_bytes += sub_skb->len; 1328 if (is_multicast_ether_addr(dst)) { 1329 stats->multicast++; 1330 } 1331 1332 /* Indicat the packets to upper layer */ 1333 sub_skb->protocol = eth_type_trans(sub_skb, dev); 1334 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 1335 sub_skb->dev = dev; 1336 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 1337 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 1338 ieee->last_rx_ps_time = jiffies; 1339 netif_rx(sub_skb); 1340 } 1341 } 1342 kfree(rxb); 1343 rxb = NULL; 1344 1345 } 1346 else 1347 { 1348 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__); 1349 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); 1350 } 1351 #ifndef JOHN_NOCPY 1352 dev_kfree_skb(skb); 1353 #endif 1354 1355 rx_exit: 1356 #ifdef NOT_YET 1357 if (sta) 1358 hostap_handle_sta_release(sta); 1359 #endif 1360 return 1; 1361 1362 rx_dropped: 1363 kfree(rxb); 1364 rxb = NULL; 1365 stats->rx_dropped++; 1366 1367 /* Returning 0 indicates to caller that we have not handled the SKB-- 1368 * so it is still allocated and can be used again by underlying 1369 * hardware as a DMA target */ 1370 return 0; 1371 } 1372 EXPORT_SYMBOL(ieee80211_rx); 1373 1374 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 1375 1376 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; 1377 1378 /* 1379 * Make the structure we read from the beacon packet to have 1380 * the right values 1381 */ 1382 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element 1383 *info_element, int sub_type) 1384 { 1385 1386 if (info_element->qui_subtype != sub_type) 1387 return -1; 1388 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) 1389 return -1; 1390 if (info_element->qui_type != QOS_OUI_TYPE) 1391 return -1; 1392 if (info_element->version != QOS_VERSION_1) 1393 return -1; 1394 1395 return 0; 1396 } 1397 1398 1399 /* 1400 * Parse a QoS parameter element 1401 */ 1402 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info 1403 *element_param, struct ieee80211_info_element 1404 *info_element) 1405 { 1406 int ret = 0; 1407 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; 1408 1409 if ((info_element == NULL) || (element_param == NULL)) 1410 return -1; 1411 1412 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { 1413 memcpy(element_param->info_element.qui, info_element->data, 1414 info_element->len); 1415 element_param->info_element.elementID = info_element->id; 1416 element_param->info_element.length = info_element->len; 1417 } else 1418 ret = -1; 1419 if (ret == 0) 1420 ret = ieee80211_verify_qos_info(&element_param->info_element, 1421 QOS_OUI_PARAM_SUB_TYPE); 1422 return ret; 1423 } 1424 1425 /* 1426 * Parse a QoS information element 1427 */ 1428 static int ieee80211_read_qos_info_element(struct 1429 ieee80211_qos_information_element 1430 *element_info, struct ieee80211_info_element 1431 *info_element) 1432 { 1433 int ret = 0; 1434 u16 size = sizeof(struct ieee80211_qos_information_element) - 2; 1435 1436 if (element_info == NULL) 1437 return -1; 1438 if (info_element == NULL) 1439 return -1; 1440 1441 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { 1442 memcpy(element_info->qui, info_element->data, 1443 info_element->len); 1444 element_info->elementID = info_element->id; 1445 element_info->length = info_element->len; 1446 } else 1447 ret = -1; 1448 1449 if (ret == 0) 1450 ret = ieee80211_verify_qos_info(element_info, 1451 QOS_OUI_INFO_SUB_TYPE); 1452 return ret; 1453 } 1454 1455 1456 /* 1457 * Write QoS parameters from the ac parameters. 1458 */ 1459 static int ieee80211_qos_convert_ac_to_parameters(struct 1460 ieee80211_qos_parameter_info 1461 *param_elm, struct 1462 ieee80211_qos_parameters 1463 *qos_param) 1464 { 1465 int i; 1466 struct ieee80211_qos_ac_parameter *ac_params; 1467 u8 aci; 1468 //u8 cw_min; 1469 //u8 cw_max; 1470 1471 for (i = 0; i < QOS_QUEUE_NUM; i++) { 1472 ac_params = &(param_elm->ac_params_record[i]); 1473 1474 aci = (ac_params->aci_aifsn & 0x60) >> 5; 1475 1476 if(aci >= QOS_QUEUE_NUM) 1477 continue; 1478 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; 1479 1480 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ 1481 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; 1482 1483 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; 1484 1485 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; 1486 1487 qos_param->flag[aci] = 1488 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; 1489 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); 1490 } 1491 return 0; 1492 } 1493 1494 /* 1495 * we have a generic data element which it may contain QoS information or 1496 * parameters element. check the information element length to decide 1497 * which type to read 1498 */ 1499 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element 1500 *info_element, 1501 struct ieee80211_network *network) 1502 { 1503 int rc = 0; 1504 struct ieee80211_qos_parameters *qos_param = NULL; 1505 struct ieee80211_qos_information_element qos_info_element; 1506 1507 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); 1508 1509 if (rc == 0) { 1510 network->qos_data.param_count = qos_info_element.ac_info & 0x0F; 1511 network->flags |= NETWORK_HAS_QOS_INFORMATION; 1512 } else { 1513 struct ieee80211_qos_parameter_info param_element; 1514 1515 rc = ieee80211_read_qos_param_element(¶m_element, 1516 info_element); 1517 if (rc == 0) { 1518 qos_param = &(network->qos_data.parameters); 1519 ieee80211_qos_convert_ac_to_parameters(¶m_element, 1520 qos_param); 1521 network->flags |= NETWORK_HAS_QOS_PARAMETERS; 1522 network->qos_data.param_count = 1523 param_element.info_element.ac_info & 0x0F; 1524 } 1525 } 1526 1527 if (rc == 0) { 1528 IEEE80211_DEBUG_QOS("QoS is supported\n"); 1529 network->qos_data.supported = 1; 1530 } 1531 return rc; 1532 } 1533 1534 #ifdef CONFIG_IEEE80211_DEBUG 1535 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x 1536 1537 static const char *get_info_element_string(u16 id) 1538 { 1539 switch (id) { 1540 MFIE_STRING(SSID); 1541 MFIE_STRING(RATES); 1542 MFIE_STRING(FH_SET); 1543 MFIE_STRING(DS_SET); 1544 MFIE_STRING(CF_SET); 1545 MFIE_STRING(TIM); 1546 MFIE_STRING(IBSS_SET); 1547 MFIE_STRING(COUNTRY); 1548 MFIE_STRING(HOP_PARAMS); 1549 MFIE_STRING(HOP_TABLE); 1550 MFIE_STRING(REQUEST); 1551 MFIE_STRING(CHALLENGE); 1552 MFIE_STRING(POWER_CONSTRAINT); 1553 MFIE_STRING(POWER_CAPABILITY); 1554 MFIE_STRING(TPC_REQUEST); 1555 MFIE_STRING(TPC_REPORT); 1556 MFIE_STRING(SUPP_CHANNELS); 1557 MFIE_STRING(CSA); 1558 MFIE_STRING(MEASURE_REQUEST); 1559 MFIE_STRING(MEASURE_REPORT); 1560 MFIE_STRING(QUIET); 1561 MFIE_STRING(IBSS_DFS); 1562 // MFIE_STRING(ERP_INFO); 1563 MFIE_STRING(RSN); 1564 MFIE_STRING(RATES_EX); 1565 MFIE_STRING(GENERIC); 1566 MFIE_STRING(QOS_PARAMETER); 1567 default: 1568 return "UNKNOWN"; 1569 } 1570 } 1571 #endif 1572 1573 static inline void ieee80211_extract_country_ie( 1574 struct ieee80211_device *ieee, 1575 struct ieee80211_info_element *info_element, 1576 struct ieee80211_network *network, 1577 u8 *addr2 1578 ) 1579 { 1580 if (IS_DOT11D_ENABLE(ieee)) 1581 { 1582 if (info_element->len!= 0) 1583 { 1584 memcpy(network->CountryIeBuf, info_element->data, info_element->len); 1585 network->CountryIeLen = info_element->len; 1586 1587 if (!IS_COUNTRY_IE_VALID(ieee)) 1588 { 1589 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); 1590 } 1591 } 1592 1593 // 1594 // 070305, rcnjko: I update country IE watch dog here because 1595 // some AP (e.g. Cisco 1242) don't include country IE in their 1596 // probe response frame. 1597 // 1598 if (IS_EQUAL_CIE_SRC(ieee, addr2) ) 1599 { 1600 UPDATE_CIE_WATCHDOG(ieee); 1601 } 1602 } 1603 1604 } 1605 1606 int ieee80211_parse_info_param(struct ieee80211_device *ieee, 1607 struct ieee80211_info_element *info_element, 1608 u16 length, 1609 struct ieee80211_network *network, 1610 struct ieee80211_rx_stats *stats) 1611 { 1612 u8 i; 1613 short offset; 1614 u16 tmp_htcap_len=0; 1615 u16 tmp_htinfo_len=0; 1616 u16 ht_realtek_agg_len=0; 1617 u8 ht_realtek_agg_buf[MAX_IE_LEN]; 1618 // u16 broadcom_len = 0; 1619 #ifdef CONFIG_IEEE80211_DEBUG 1620 char rates_str[64]; 1621 char *p; 1622 #endif 1623 1624 while (length >= sizeof(*info_element)) { 1625 if (sizeof(*info_element) + info_element->len > length) { 1626 IEEE80211_DEBUG_MGMT("Info elem: parse failed: " 1627 "info_element->len + 2 > left : " 1628 "info_element->len+2=%zd left=%d, id=%d.\n", 1629 info_element->len + 1630 sizeof(*info_element), 1631 length, info_element->id); 1632 /* We stop processing but don't return an error here 1633 * because some misbehaviour APs break this rule. ie. 1634 * Orinoco AP1000. */ 1635 break; 1636 } 1637 1638 switch (info_element->id) { 1639 case MFIE_TYPE_SSID: 1640 if (ieee80211_is_empty_essid(info_element->data, 1641 info_element->len)) { 1642 network->flags |= NETWORK_EMPTY_ESSID; 1643 break; 1644 } 1645 1646 network->ssid_len = min(info_element->len, 1647 (u8) IW_ESSID_MAX_SIZE); 1648 memcpy(network->ssid, info_element->data, network->ssid_len); 1649 if (network->ssid_len < IW_ESSID_MAX_SIZE) 1650 memset(network->ssid + network->ssid_len, 0, 1651 IW_ESSID_MAX_SIZE - network->ssid_len); 1652 1653 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", 1654 network->ssid, network->ssid_len); 1655 break; 1656 1657 case MFIE_TYPE_RATES: 1658 #ifdef CONFIG_IEEE80211_DEBUG 1659 p = rates_str; 1660 #endif 1661 network->rates_len = min(info_element->len, 1662 MAX_RATES_LENGTH); 1663 for (i = 0; i < network->rates_len; i++) { 1664 network->rates[i] = info_element->data[i]; 1665 #ifdef CONFIG_IEEE80211_DEBUG 1666 p += snprintf(p, sizeof(rates_str) - 1667 (p - rates_str), "%02X ", 1668 network->rates[i]); 1669 #endif 1670 if (ieee80211_is_ofdm_rate 1671 (info_element->data[i])) { 1672 network->flags |= NETWORK_HAS_OFDM; 1673 if (info_element->data[i] & 1674 IEEE80211_BASIC_RATE_MASK) 1675 network->flags &= 1676 ~NETWORK_HAS_CCK; 1677 } 1678 } 1679 1680 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", 1681 rates_str, network->rates_len); 1682 break; 1683 1684 case MFIE_TYPE_RATES_EX: 1685 #ifdef CONFIG_IEEE80211_DEBUG 1686 p = rates_str; 1687 #endif 1688 network->rates_ex_len = min(info_element->len, 1689 MAX_RATES_EX_LENGTH); 1690 for (i = 0; i < network->rates_ex_len; i++) { 1691 network->rates_ex[i] = info_element->data[i]; 1692 #ifdef CONFIG_IEEE80211_DEBUG 1693 p += snprintf(p, sizeof(rates_str) - 1694 (p - rates_str), "%02X ", 1695 network->rates_ex[i]); 1696 #endif 1697 if (ieee80211_is_ofdm_rate 1698 (info_element->data[i])) { 1699 network->flags |= NETWORK_HAS_OFDM; 1700 if (info_element->data[i] & 1701 IEEE80211_BASIC_RATE_MASK) 1702 network->flags &= 1703 ~NETWORK_HAS_CCK; 1704 } 1705 } 1706 1707 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", 1708 rates_str, network->rates_ex_len); 1709 break; 1710 1711 case MFIE_TYPE_DS_SET: 1712 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", 1713 info_element->data[0]); 1714 network->channel = info_element->data[0]; 1715 break; 1716 1717 case MFIE_TYPE_FH_SET: 1718 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); 1719 break; 1720 1721 case MFIE_TYPE_CF_SET: 1722 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); 1723 break; 1724 1725 case MFIE_TYPE_TIM: 1726 if(info_element->len < 4) 1727 break; 1728 1729 network->tim.tim_count = info_element->data[0]; 1730 network->tim.tim_period = info_element->data[1]; 1731 1732 network->dtim_period = info_element->data[1]; 1733 if(ieee->state != IEEE80211_LINKED) 1734 break; 1735 1736 network->last_dtim_sta_time[0] = stats->mac_time[0]; 1737 network->last_dtim_sta_time[1] = stats->mac_time[1]; 1738 1739 network->dtim_data = IEEE80211_DTIM_VALID; 1740 1741 if(info_element->data[0] != 0) 1742 break; 1743 1744 if(info_element->data[2] & 1) 1745 network->dtim_data |= IEEE80211_DTIM_MBCAST; 1746 1747 offset = (info_element->data[2] >> 1)*2; 1748 1749 if(ieee->assoc_id < 8*offset || 1750 ieee->assoc_id > 8*(offset + info_element->len -3)) 1751 1752 break; 1753 1754 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; 1755 1756 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) 1757 network->dtim_data |= IEEE80211_DTIM_UCAST; 1758 1759 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); 1760 break; 1761 1762 case MFIE_TYPE_ERP: 1763 network->erp_value = info_element->data[0]; 1764 network->flags |= NETWORK_HAS_ERP_VALUE; 1765 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", 1766 network->erp_value); 1767 break; 1768 case MFIE_TYPE_IBSS_SET: 1769 network->atim_window = info_element->data[0]; 1770 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", 1771 network->atim_window); 1772 break; 1773 1774 case MFIE_TYPE_CHALLENGE: 1775 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); 1776 break; 1777 1778 case MFIE_TYPE_GENERIC: 1779 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", 1780 info_element->len); 1781 if (!ieee80211_parse_qos_info_param_IE(info_element, 1782 network)) 1783 break; 1784 1785 if (info_element->len >= 4 && 1786 info_element->data[0] == 0x00 && 1787 info_element->data[1] == 0x50 && 1788 info_element->data[2] == 0xf2 && 1789 info_element->data[3] == 0x01) { 1790 network->wpa_ie_len = min(info_element->len + 2, 1791 MAX_WPA_IE_LEN); 1792 memcpy(network->wpa_ie, info_element, 1793 network->wpa_ie_len); 1794 break; 1795 } 1796 1797 #ifdef THOMAS_TURBO 1798 if (info_element->len == 7 && 1799 info_element->data[0] == 0x00 && 1800 info_element->data[1] == 0xe0 && 1801 info_element->data[2] == 0x4c && 1802 info_element->data[3] == 0x01 && 1803 info_element->data[4] == 0x02) { 1804 network->Turbo_Enable = 1; 1805 } 1806 #endif 1807 1808 //for HTcap and HTinfo parameters 1809 if(tmp_htcap_len == 0){ 1810 if(info_element->len >= 4 && 1811 info_element->data[0] == 0x00 && 1812 info_element->data[1] == 0x90 && 1813 info_element->data[2] == 0x4c && 1814 info_element->data[3] == 0x033){ 1815 1816 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 1817 if(tmp_htcap_len != 0){ 1818 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1819 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 1820 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 1821 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 1822 } 1823 } 1824 if(tmp_htcap_len != 0) 1825 network->bssht.bdSupportHT = true; 1826 else 1827 network->bssht.bdSupportHT = false; 1828 } 1829 1830 1831 if(tmp_htinfo_len == 0){ 1832 if(info_element->len >= 4 && 1833 info_element->data[0] == 0x00 && 1834 info_element->data[1] == 0x90 && 1835 info_element->data[2] == 0x4c && 1836 info_element->data[3] == 0x034){ 1837 1838 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 1839 if(tmp_htinfo_len != 0){ 1840 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1841 if(tmp_htinfo_len){ 1842 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 1843 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 1844 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 1845 } 1846 1847 } 1848 1849 } 1850 } 1851 1852 if(ieee->aggregation){ 1853 if(network->bssht.bdSupportHT){ 1854 if(info_element->len >= 4 && 1855 info_element->data[0] == 0x00 && 1856 info_element->data[1] == 0xe0 && 1857 info_element->data[2] == 0x4c && 1858 info_element->data[3] == 0x02){ 1859 1860 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); 1861 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); 1862 1863 } 1864 if(ht_realtek_agg_len >= 5){ 1865 network->bssht.bdRT2RTAggregation = true; 1866 1867 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) 1868 network->bssht.bdRT2RTLongSlotTime = true; 1869 } 1870 } 1871 1872 } 1873 1874 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) 1875 { 1876 if ((info_element->len >= 3 && 1877 info_element->data[0] == 0x00 && 1878 info_element->data[1] == 0x05 && 1879 info_element->data[2] == 0xb5) || 1880 (info_element->len >= 3 && 1881 info_element->data[0] == 0x00 && 1882 info_element->data[1] == 0x0a && 1883 info_element->data[2] == 0xf7) || 1884 (info_element->len >= 3 && 1885 info_element->data[0] == 0x00 && 1886 info_element->data[1] == 0x10 && 1887 info_element->data[2] == 0x18)){ 1888 1889 network->broadcom_cap_exist = true; 1890 1891 } 1892 } 1893 if(info_element->len >= 3 && 1894 info_element->data[0] == 0x00 && 1895 info_element->data[1] == 0x0c && 1896 info_element->data[2] == 0x43) 1897 { 1898 network->ralink_cap_exist = true; 1899 } 1900 else 1901 network->ralink_cap_exist = false; 1902 //added by amy for atheros AP 1903 if((info_element->len >= 3 && 1904 info_element->data[0] == 0x00 && 1905 info_element->data[1] == 0x03 && 1906 info_element->data[2] == 0x7f) || 1907 (info_element->len >= 3 && 1908 info_element->data[0] == 0x00 && 1909 info_element->data[1] == 0x13 && 1910 info_element->data[2] == 0x74)) 1911 { 1912 printk("========>%s(): athros AP is exist\n",__func__); 1913 network->atheros_cap_exist = true; 1914 } 1915 else 1916 network->atheros_cap_exist = false; 1917 1918 if(info_element->len >= 3 && 1919 info_element->data[0] == 0x00 && 1920 info_element->data[1] == 0x40 && 1921 info_element->data[2] == 0x96) 1922 { 1923 network->cisco_cap_exist = true; 1924 } 1925 else 1926 network->cisco_cap_exist = false; 1927 //added by amy for LEAP of cisco 1928 if (info_element->len > 4 && 1929 info_element->data[0] == 0x00 && 1930 info_element->data[1] == 0x40 && 1931 info_element->data[2] == 0x96 && 1932 info_element->data[3] == 0x01) 1933 { 1934 if(info_element->len == 6) 1935 { 1936 memcpy(network->CcxRmState, &info_element[4], 2); 1937 if(network->CcxRmState[0] != 0) 1938 { 1939 network->bCcxRmEnable = true; 1940 } 1941 else 1942 network->bCcxRmEnable = false; 1943 // 1944 // CCXv4 Table 59-1 MBSSID Masks. 1945 // 1946 network->MBssidMask = network->CcxRmState[1] & 0x07; 1947 if(network->MBssidMask != 0) 1948 { 1949 network->bMBssidValid = true; 1950 network->MBssidMask = 0xff << (network->MBssidMask); 1951 cpMacAddr(network->MBssid, network->bssid); 1952 network->MBssid[5] &= network->MBssidMask; 1953 } 1954 else 1955 { 1956 network->bMBssidValid = false; 1957 } 1958 } 1959 else 1960 { 1961 network->bCcxRmEnable = false; 1962 } 1963 } 1964 if (info_element->len > 4 && 1965 info_element->data[0] == 0x00 && 1966 info_element->data[1] == 0x40 && 1967 info_element->data[2] == 0x96 && 1968 info_element->data[3] == 0x03) 1969 { 1970 if(info_element->len == 5) 1971 { 1972 network->bWithCcxVerNum = true; 1973 network->BssCcxVerNumber = info_element->data[4]; 1974 } 1975 else 1976 { 1977 network->bWithCcxVerNum = false; 1978 network->BssCcxVerNumber = 0; 1979 } 1980 } 1981 break; 1982 1983 case MFIE_TYPE_RSN: 1984 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", 1985 info_element->len); 1986 network->rsn_ie_len = min(info_element->len + 2, 1987 MAX_WPA_IE_LEN); 1988 memcpy(network->rsn_ie, info_element, 1989 network->rsn_ie_len); 1990 break; 1991 1992 //HT related element. 1993 case MFIE_TYPE_HT_CAP: 1994 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", 1995 info_element->len); 1996 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 1997 if(tmp_htcap_len != 0){ 1998 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1999 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 2000 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 2001 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 2002 2003 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() 2004 // windows driver will update WMM parameters each beacon received once connected 2005 // Linux driver is a bit different. 2006 network->bssht.bdSupportHT = true; 2007 } 2008 else 2009 network->bssht.bdSupportHT = false; 2010 break; 2011 2012 2013 case MFIE_TYPE_HT_INFO: 2014 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", 2015 info_element->len); 2016 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 2017 if(tmp_htinfo_len){ 2018 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; 2019 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 2020 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 2021 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 2022 } 2023 break; 2024 2025 case MFIE_TYPE_AIRONET: 2026 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", 2027 info_element->len); 2028 if(info_element->len >IE_CISCO_FLAG_POSITION) 2029 { 2030 network->bWithAironetIE = true; 2031 2032 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): 2033 // "A Cisco access point advertises support for CKIP in beacon and probe response packets, 2034 // by adding an Aironet element and setting one or both of the CKIP negotiation bits." 2035 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || 2036 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) 2037 { 2038 network->bCkipSupported = true; 2039 } 2040 else 2041 { 2042 network->bCkipSupported = false; 2043 } 2044 } 2045 else 2046 { 2047 network->bWithAironetIE = false; 2048 network->bCkipSupported = false; 2049 } 2050 break; 2051 case MFIE_TYPE_QOS_PARAMETER: 2052 printk(KERN_ERR 2053 "QoS Error need to parse QOS_PARAMETER IE\n"); 2054 break; 2055 2056 case MFIE_TYPE_COUNTRY: 2057 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", 2058 info_element->len); 2059 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP 2060 break; 2061 /* TODO */ 2062 default: 2063 IEEE80211_DEBUG_MGMT 2064 ("Unsupported info element: %s (%d)\n", 2065 get_info_element_string(info_element->id), 2066 info_element->id); 2067 break; 2068 } 2069 2070 length -= sizeof(*info_element) + info_element->len; 2071 info_element = 2072 (struct ieee80211_info_element *)&info_element-> 2073 data[info_element->len]; 2074 } 2075 2076 if(!network->atheros_cap_exist && !network->broadcom_cap_exist && 2077 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) 2078 { 2079 network->unknown_cap_exist = true; 2080 } 2081 else 2082 { 2083 network->unknown_cap_exist = false; 2084 } 2085 return 0; 2086 } 2087 2088 static inline u8 ieee80211_SignalStrengthTranslate( 2089 u8 CurrSS 2090 ) 2091 { 2092 u8 RetSS; 2093 2094 // Step 1. Scale mapping. 2095 if(CurrSS >= 71 && CurrSS <= 100) 2096 { 2097 RetSS = 90 + ((CurrSS - 70) / 3); 2098 } 2099 else if(CurrSS >= 41 && CurrSS <= 70) 2100 { 2101 RetSS = 78 + ((CurrSS - 40) / 3); 2102 } 2103 else if(CurrSS >= 31 && CurrSS <= 40) 2104 { 2105 RetSS = 66 + (CurrSS - 30); 2106 } 2107 else if(CurrSS >= 21 && CurrSS <= 30) 2108 { 2109 RetSS = 54 + (CurrSS - 20); 2110 } 2111 else if(CurrSS >= 5 && CurrSS <= 20) 2112 { 2113 RetSS = 42 + (((CurrSS - 5) * 2) / 3); 2114 } 2115 else if(CurrSS == 4) 2116 { 2117 RetSS = 36; 2118 } 2119 else if(CurrSS == 3) 2120 { 2121 RetSS = 27; 2122 } 2123 else if(CurrSS == 2) 2124 { 2125 RetSS = 18; 2126 } 2127 else if(CurrSS == 1) 2128 { 2129 RetSS = 9; 2130 } 2131 else 2132 { 2133 RetSS = CurrSS; 2134 } 2135 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2136 2137 // Step 2. Smoothing. 2138 2139 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2140 2141 return RetSS; 2142 } 2143 2144 /* 0-100 index */ 2145 static long ieee80211_translate_todbm(u8 signal_strength_index) 2146 { 2147 long signal_power; // in dBm. 2148 2149 // Translate to dBm (x=0.5y-95). 2150 signal_power = (long)((signal_strength_index + 1) >> 1); 2151 signal_power -= 95; 2152 2153 return signal_power; 2154 } 2155 2156 static inline int ieee80211_network_init( 2157 struct ieee80211_device *ieee, 2158 struct ieee80211_probe_response *beacon, 2159 struct ieee80211_network *network, 2160 struct ieee80211_rx_stats *stats) 2161 { 2162 #ifdef CONFIG_IEEE80211_DEBUG 2163 //char rates_str[64]; 2164 //char *p; 2165 #endif 2166 2167 network->qos_data.active = 0; 2168 network->qos_data.supported = 0; 2169 network->qos_data.param_count = 0; 2170 network->qos_data.old_param_count = 0; 2171 2172 /* Pull out fixed field data */ 2173 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); 2174 network->capability = le16_to_cpu(beacon->capability); 2175 network->last_scanned = jiffies; 2176 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); 2177 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); 2178 network->beacon_interval = le16_to_cpu(beacon->beacon_interval); 2179 /* Where to pull this? beacon->listen_interval;*/ 2180 network->listen_interval = 0x0A; 2181 network->rates_len = network->rates_ex_len = 0; 2182 network->last_associate = 0; 2183 network->ssid_len = 0; 2184 network->flags = 0; 2185 network->atim_window = 0; 2186 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? 2187 0x3 : 0x0; 2188 network->berp_info_valid = false; 2189 network->broadcom_cap_exist = false; 2190 network->ralink_cap_exist = false; 2191 network->atheros_cap_exist = false; 2192 network->cisco_cap_exist = false; 2193 network->unknown_cap_exist = false; 2194 #ifdef THOMAS_TURBO 2195 network->Turbo_Enable = 0; 2196 #endif 2197 network->CountryIeLen = 0; 2198 memset(network->CountryIeBuf, 0, MAX_IE_LEN); 2199 //Initialize HT parameters 2200 //ieee80211_ht_initialize(&network->bssht); 2201 HTInitializeBssDesc(&network->bssht); 2202 if (stats->freq == IEEE80211_52GHZ_BAND) { 2203 /* for A band (No DS info) */ 2204 network->channel = stats->received_channel; 2205 } else 2206 network->flags |= NETWORK_HAS_CCK; 2207 2208 network->wpa_ie_len = 0; 2209 network->rsn_ie_len = 0; 2210 2211 if (ieee80211_parse_info_param 2212 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) 2213 return 1; 2214 2215 network->mode = 0; 2216 if (stats->freq == IEEE80211_52GHZ_BAND) 2217 network->mode = IEEE_A; 2218 else { 2219 if (network->flags & NETWORK_HAS_OFDM) 2220 network->mode |= IEEE_G; 2221 if (network->flags & NETWORK_HAS_CCK) 2222 network->mode |= IEEE_B; 2223 } 2224 2225 if (network->mode == 0) { 2226 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' " 2227 "network.\n", 2228 escape_essid(network->ssid, 2229 network->ssid_len), 2230 network->bssid); 2231 return 1; 2232 } 2233 2234 if(network->bssht.bdSupportHT){ 2235 if(network->mode == IEEE_A) 2236 network->mode = IEEE_N_5G; 2237 else if(network->mode & (IEEE_G | IEEE_B)) 2238 network->mode = IEEE_N_24G; 2239 } 2240 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) 2241 network->flags |= NETWORK_EMPTY_ESSID; 2242 2243 stats->signal = 30 + (stats->SignalStrength * 70) / 100; 2244 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); 2245 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; 2246 2247 memcpy(&network->stats, stats, sizeof(network->stats)); 2248 2249 return 0; 2250 } 2251 2252 static inline int is_same_network(struct ieee80211_network *src, 2253 struct ieee80211_network *dst, struct ieee80211_device *ieee) 2254 { 2255 /* A network is only a duplicate if the channel, BSSID, ESSID 2256 * and the capability field (in particular IBSS and BSS) all match. 2257 * We treat all <hidden> with the same BSSID and channel 2258 * as one network */ 2259 return //((src->ssid_len == dst->ssid_len) && 2260 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2261 (src->channel == dst->channel) && 2262 !memcmp(src->bssid, dst->bssid, ETH_ALEN) && 2263 //!memcmp(src->ssid, dst->ssid, src->ssid_len) && 2264 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2265 ((src->capability & WLAN_CAPABILITY_IBSS) == 2266 (dst->capability & WLAN_CAPABILITY_IBSS)) && 2267 ((src->capability & WLAN_CAPABILITY_BSS) == 2268 (dst->capability & WLAN_CAPABILITY_BSS))); 2269 } 2270 2271 static inline void update_network(struct ieee80211_network *dst, 2272 struct ieee80211_network *src) 2273 { 2274 int qos_active; 2275 u8 old_param; 2276 2277 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); 2278 dst->capability = src->capability; 2279 memcpy(dst->rates, src->rates, src->rates_len); 2280 dst->rates_len = src->rates_len; 2281 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); 2282 dst->rates_ex_len = src->rates_ex_len; 2283 if (src->ssid_len > 0) 2284 { 2285 memset(dst->ssid, 0, dst->ssid_len); 2286 dst->ssid_len = src->ssid_len; 2287 memcpy(dst->ssid, src->ssid, src->ssid_len); 2288 } 2289 dst->mode = src->mode; 2290 dst->flags = src->flags; 2291 dst->time_stamp[0] = src->time_stamp[0]; 2292 dst->time_stamp[1] = src->time_stamp[1]; 2293 if (src->flags & NETWORK_HAS_ERP_VALUE) 2294 { 2295 dst->erp_value = src->erp_value; 2296 dst->berp_info_valid = src->berp_info_valid = true; 2297 } 2298 dst->beacon_interval = src->beacon_interval; 2299 dst->listen_interval = src->listen_interval; 2300 dst->atim_window = src->atim_window; 2301 dst->dtim_period = src->dtim_period; 2302 dst->dtim_data = src->dtim_data; 2303 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; 2304 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; 2305 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); 2306 2307 dst->bssht.bdSupportHT = src->bssht.bdSupportHT; 2308 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; 2309 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; 2310 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); 2311 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; 2312 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); 2313 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; 2314 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; 2315 dst->broadcom_cap_exist = src->broadcom_cap_exist; 2316 dst->ralink_cap_exist = src->ralink_cap_exist; 2317 dst->atheros_cap_exist = src->atheros_cap_exist; 2318 dst->cisco_cap_exist = src->cisco_cap_exist; 2319 dst->unknown_cap_exist = src->unknown_cap_exist; 2320 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); 2321 dst->wpa_ie_len = src->wpa_ie_len; 2322 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); 2323 dst->rsn_ie_len = src->rsn_ie_len; 2324 2325 dst->last_scanned = jiffies; 2326 /* qos related parameters */ 2327 //qos_active = src->qos_data.active; 2328 qos_active = dst->qos_data.active; 2329 //old_param = dst->qos_data.old_param_count; 2330 old_param = dst->qos_data.param_count; 2331 if(dst->flags & NETWORK_HAS_QOS_MASK) 2332 memcpy(&dst->qos_data, &src->qos_data, 2333 sizeof(struct ieee80211_qos_data)); 2334 else { 2335 dst->qos_data.supported = src->qos_data.supported; 2336 dst->qos_data.param_count = src->qos_data.param_count; 2337 } 2338 2339 if (dst->qos_data.supported == 1) { 2340 dst->QoS_Enable = 1; 2341 if(dst->ssid_len) 2342 IEEE80211_DEBUG_QOS 2343 ("QoS the network %s is QoS supported\n", 2344 dst->ssid); 2345 else 2346 IEEE80211_DEBUG_QOS 2347 ("QoS the network is QoS supported\n"); 2348 } 2349 dst->qos_data.active = qos_active; 2350 dst->qos_data.old_param_count = old_param; 2351 2352 /* dst->last_associate is not overwritten */ 2353 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. 2354 if (src->wmm_param[0].aci_aifsn|| \ 2355 src->wmm_param[1].aci_aifsn|| \ 2356 src->wmm_param[2].aci_aifsn|| \ 2357 src->wmm_param[3].aci_aifsn) { 2358 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); 2359 } 2360 //dst->QoS_Enable = src->QoS_Enable; 2361 #ifdef THOMAS_TURBO 2362 dst->Turbo_Enable = src->Turbo_Enable; 2363 #endif 2364 2365 dst->CountryIeLen = src->CountryIeLen; 2366 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); 2367 2368 //added by amy for LEAP 2369 dst->bWithAironetIE = src->bWithAironetIE; 2370 dst->bCkipSupported = src->bCkipSupported; 2371 memcpy(dst->CcxRmState, src->CcxRmState, 2); 2372 dst->bCcxRmEnable = src->bCcxRmEnable; 2373 dst->MBssidMask = src->MBssidMask; 2374 dst->bMBssidValid = src->bMBssidValid; 2375 memcpy(dst->MBssid, src->MBssid, 6); 2376 dst->bWithCcxVerNum = src->bWithCcxVerNum; 2377 dst->BssCcxVerNumber = src->BssCcxVerNumber; 2378 2379 } 2380 2381 static inline int is_beacon(__le16 fc) 2382 { 2383 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); 2384 } 2385 2386 static inline void ieee80211_process_probe_response( 2387 struct ieee80211_device *ieee, 2388 struct ieee80211_probe_response *beacon, 2389 struct ieee80211_rx_stats *stats) 2390 { 2391 struct ieee80211_network network; 2392 struct ieee80211_network *target; 2393 struct ieee80211_network *oldest = NULL; 2394 #ifdef CONFIG_IEEE80211_DEBUG 2395 struct ieee80211_info_element *info_element = &beacon->info_element[0]; 2396 #endif 2397 unsigned long flags; 2398 short renew; 2399 //u8 wmm_info; 2400 2401 memset(&network, 0, sizeof(struct ieee80211_network)); 2402 IEEE80211_DEBUG_SCAN( 2403 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", 2404 escape_essid(info_element->data, info_element->len), 2405 beacon->header.addr3, 2406 (beacon->capability & (1<<0xf)) ? '1' : '0', 2407 (beacon->capability & (1<<0xe)) ? '1' : '0', 2408 (beacon->capability & (1<<0xd)) ? '1' : '0', 2409 (beacon->capability & (1<<0xc)) ? '1' : '0', 2410 (beacon->capability & (1<<0xb)) ? '1' : '0', 2411 (beacon->capability & (1<<0xa)) ? '1' : '0', 2412 (beacon->capability & (1<<0x9)) ? '1' : '0', 2413 (beacon->capability & (1<<0x8)) ? '1' : '0', 2414 (beacon->capability & (1<<0x7)) ? '1' : '0', 2415 (beacon->capability & (1<<0x6)) ? '1' : '0', 2416 (beacon->capability & (1<<0x5)) ? '1' : '0', 2417 (beacon->capability & (1<<0x4)) ? '1' : '0', 2418 (beacon->capability & (1<<0x3)) ? '1' : '0', 2419 (beacon->capability & (1<<0x2)) ? '1' : '0', 2420 (beacon->capability & (1<<0x1)) ? '1' : '0', 2421 (beacon->capability & (1<<0x0)) ? '1' : '0'); 2422 2423 if (ieee80211_network_init(ieee, beacon, &network, stats)) { 2424 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n", 2425 escape_essid(info_element->data, 2426 info_element->len), 2427 beacon->header.addr3, 2428 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2429 IEEE80211_STYPE_PROBE_RESP ? 2430 "PROBE RESPONSE" : "BEACON"); 2431 return; 2432 } 2433 2434 // For Asus EeePc request, 2435 // (1) if wireless adapter receive get any 802.11d country code in AP beacon, 2436 // wireless adapter should follow the country code. 2437 // (2) If there is no any country code in beacon, 2438 // then wireless adapter should do active scan from ch1~11 and 2439 // passive scan from ch12~14 2440 2441 if (!IsLegalChannel(ieee, network.channel)) 2442 return; 2443 if (ieee->bGlobalDomain) 2444 { 2445 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) 2446 { 2447 // Case 1: Country code 2448 if(IS_COUNTRY_IE_VALID(ieee) ) 2449 { 2450 if (!IsLegalChannel(ieee, network.channel)) { 2451 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); 2452 return; 2453 } 2454 } 2455 // Case 2: No any country code. 2456 else 2457 { 2458 // Filter over channel ch12~14 2459 if (network.channel > 11) 2460 { 2461 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); 2462 return; 2463 } 2464 } 2465 } 2466 else 2467 { 2468 // Case 1: Country code 2469 if(IS_COUNTRY_IE_VALID(ieee) ) 2470 { 2471 if (!IsLegalChannel(ieee, network.channel)) { 2472 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); 2473 return; 2474 } 2475 } 2476 // Case 2: No any country code. 2477 else 2478 { 2479 // Filter over channel ch12~14 2480 if (network.channel > 14) 2481 { 2482 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); 2483 return; 2484 } 2485 } 2486 } 2487 } 2488 2489 /* The network parsed correctly -- so now we scan our known networks 2490 * to see if we can find it in our list. 2491 * 2492 * NOTE: This search is definitely not optimized. Once its doing 2493 * the "right thing" we'll optimize it for efficiency if 2494 * necessary */ 2495 2496 /* Search for this entry in the list and update it if it is 2497 * already there. */ 2498 2499 spin_lock_irqsave(&ieee->lock, flags); 2500 2501 if (is_same_network(&ieee->current_network, &network, ieee)) { 2502 update_network(&ieee->current_network, &network); 2503 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) 2504 && ieee->current_network.berp_info_valid){ 2505 if(ieee->current_network.erp_value& ERP_UseProtection) 2506 ieee->current_network.buseprotection = true; 2507 else 2508 ieee->current_network.buseprotection = false; 2509 } 2510 if(is_beacon(beacon->header.frame_ctl)) 2511 { 2512 if(ieee->state == IEEE80211_LINKED) 2513 ieee->LinkDetectInfo.NumRecvBcnInPeriod++; 2514 } 2515 else //hidden AP 2516 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); 2517 } 2518 2519 list_for_each_entry(target, &ieee->network_list, list) { 2520 if (is_same_network(target, &network, ieee)) 2521 break; 2522 if ((oldest == NULL) || 2523 (target->last_scanned < oldest->last_scanned)) 2524 oldest = target; 2525 } 2526 2527 /* If we didn't find a match, then get a new network slot to initialize 2528 * with this beacon's information */ 2529 if (&target->list == &ieee->network_list) { 2530 if (list_empty(&ieee->network_free_list)) { 2531 /* If there are no more slots, expire the oldest */ 2532 list_del(&oldest->list); 2533 target = oldest; 2534 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from " 2535 "network list.\n", 2536 escape_essid(target->ssid, 2537 target->ssid_len), 2538 target->bssid); 2539 } else { 2540 /* Otherwise just pull from the free list */ 2541 target = list_entry(ieee->network_free_list.next, 2542 struct ieee80211_network, list); 2543 list_del(ieee->network_free_list.next); 2544 } 2545 2546 2547 #ifdef CONFIG_IEEE80211_DEBUG 2548 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n", 2549 escape_essid(network.ssid, 2550 network.ssid_len), 2551 network.bssid, 2552 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2553 IEEE80211_STYPE_PROBE_RESP ? 2554 "PROBE RESPONSE" : "BEACON"); 2555 #endif 2556 memcpy(target, &network, sizeof(*target)); 2557 list_add_tail(&target->list, &ieee->network_list); 2558 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) 2559 ieee80211_softmac_new_net(ieee,&network); 2560 } else { 2561 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n", 2562 escape_essid(target->ssid, 2563 target->ssid_len), 2564 target->bssid, 2565 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2566 IEEE80211_STYPE_PROBE_RESP ? 2567 "PROBE RESPONSE" : "BEACON"); 2568 2569 /* we have an entry and we are going to update it. But this entry may 2570 * be already expired. In this case we do the same as we found a new 2571 * net and call the new_net handler 2572 */ 2573 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); 2574 //YJ,add,080819,for hidden ap 2575 if(is_beacon(beacon->header.frame_ctl) == 0) 2576 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); 2577 //if(strncmp(network.ssid, "linksys-c",9) == 0) 2578 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); 2579 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ 2580 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ 2581 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) 2582 renew = 1; 2583 //YJ,add,080819,for hidden ap,end 2584 2585 update_network(target, &network); 2586 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) 2587 ieee80211_softmac_new_net(ieee,&network); 2588 } 2589 2590 spin_unlock_irqrestore(&ieee->lock, flags); 2591 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ 2592 (ieee->state == IEEE80211_LINKED)) { 2593 if (ieee->handle_beacon != NULL) { 2594 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); 2595 } 2596 } 2597 } 2598 2599 void ieee80211_rx_mgt(struct ieee80211_device *ieee, 2600 struct rtl_80211_hdr_4addr *header, 2601 struct ieee80211_rx_stats *stats) 2602 { 2603 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 2604 2605 case IEEE80211_STYPE_BEACON: 2606 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", 2607 WLAN_FC_GET_STYPE(header->frame_ctl)); 2608 IEEE80211_DEBUG_SCAN("Beacon\n"); 2609 ieee80211_process_probe_response( 2610 ieee, (struct ieee80211_probe_response *)header, stats); 2611 break; 2612 2613 case IEEE80211_STYPE_PROBE_RESP: 2614 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", 2615 WLAN_FC_GET_STYPE(header->frame_ctl)); 2616 IEEE80211_DEBUG_SCAN("Probe response\n"); 2617 ieee80211_process_probe_response( 2618 ieee, (struct ieee80211_probe_response *)header, stats); 2619 break; 2620 2621 } 2622 } 2623 EXPORT_SYMBOL(ieee80211_rx_mgt); 2624