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 == NULL) 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 cb_desc *tcb_desc = (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 cb_desc *tcb_desc = (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 Reorer 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 (u8)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 case 0: 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 #endif 1107 1108 dev->last_rx = jiffies; 1109 1110 #ifdef NOT_YET 1111 if ((ieee->iw_mode == IW_MODE_MASTER || 1112 ieee->iw_mode == IW_MODE_REPEAT) && 1113 !from_assoc_ap) { 1114 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, 1115 wds != NULL)) { 1116 case AP_RX_CONTINUE_NOT_AUTHORIZED: 1117 case AP_RX_CONTINUE: 1118 break; 1119 case AP_RX_DROP: 1120 goto rx_dropped; 1121 case AP_RX_EXIT: 1122 goto rx_exit; 1123 } 1124 } 1125 #endif 1126 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); 1127 /* Nullfunc frames may have PS-bit set, so they must be passed to 1128 * hostap_handle_sta_rx() before being dropped here. */ 1129 if (stype != IEEE80211_STYPE_DATA && 1130 stype != IEEE80211_STYPE_DATA_CFACK && 1131 stype != IEEE80211_STYPE_DATA_CFPOLL && 1132 stype != IEEE80211_STYPE_DATA_CFACKPOLL&& 1133 stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 1134 ) { 1135 if (stype != IEEE80211_STYPE_NULLFUNC) 1136 IEEE80211_DEBUG_DROP( 1137 "RX: dropped data frame " 1138 "with no data (type=0x%02x, " 1139 "subtype=0x%02x, len=%d)\n", 1140 type, stype, skb->len); 1141 goto rx_dropped; 1142 } 1143 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) 1144 goto rx_dropped; 1145 1146 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ 1147 1148 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1149 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) 1150 { 1151 printk("decrypt frame error\n"); 1152 goto rx_dropped; 1153 } 1154 1155 1156 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1157 1158 /* skb: hdr + (possibly fragmented) plaintext payload */ 1159 // PR: FIXME: hostap has additional conditions in the "if" below: 1160 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1161 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { 1162 int flen; 1163 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); 1164 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); 1165 1166 if (!frag_skb) { 1167 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, 1168 "Rx cannot get skb from fragment " 1169 "cache (morefrag=%d seq=%u frag=%u)\n", 1170 (fc & IEEE80211_FCTL_MOREFRAGS) != 0, 1171 WLAN_GET_SEQ_SEQ(sc), frag); 1172 goto rx_dropped; 1173 } 1174 flen = skb->len; 1175 if (frag != 0) 1176 flen -= hdrlen; 1177 1178 if (frag_skb->tail + flen > frag_skb->end) { 1179 printk(KERN_WARNING "%s: host decrypted and " 1180 "reassembled frame did not fit skb\n", 1181 dev->name); 1182 ieee80211_frag_cache_invalidate(ieee, hdr); 1183 goto rx_dropped; 1184 } 1185 1186 if (frag == 0) { 1187 /* copy first fragment (including full headers) into 1188 * beginning of the fragment cache skb */ 1189 memcpy(skb_put(frag_skb, flen), skb->data, flen); 1190 } else { 1191 /* append frame payload to the end of the fragment 1192 * cache skb */ 1193 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, 1194 flen); 1195 } 1196 dev_kfree_skb_any(skb); 1197 skb = NULL; 1198 1199 if (fc & IEEE80211_FCTL_MOREFRAGS) { 1200 /* more fragments expected - leave the skb in fragment 1201 * cache for now; it will be delivered to upper layers 1202 * after all fragments have been received */ 1203 goto rx_exit; 1204 } 1205 1206 /* this was the last fragment and the frame will be 1207 * delivered, so remove skb from fragment cache */ 1208 skb = frag_skb; 1209 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1210 ieee80211_frag_cache_invalidate(ieee, hdr); 1211 } 1212 1213 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still 1214 * encrypted/authenticated */ 1215 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && 1216 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) 1217 { 1218 printk("==>decrypt msdu error\n"); 1219 goto rx_dropped; 1220 } 1221 1222 //added by amy for AP roaming 1223 ieee->LinkDetectInfo.NumRecvDataInPeriod++; 1224 ieee->LinkDetectInfo.NumRxOkInPeriod++; 1225 1226 hdr = (struct rtl_80211_hdr_4addr *) skb->data; 1227 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { 1228 if (/*ieee->ieee802_1x &&*/ 1229 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1230 1231 #ifdef CONFIG_IEEE80211_DEBUG 1232 /* pass unencrypted EAPOL frames even if encryption is 1233 * configured */ 1234 struct eapol *eap = (struct eapol *)(skb->data + 1235 24); 1236 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1237 eap_get_type(eap->type)); 1238 #endif 1239 } else { 1240 IEEE80211_DEBUG_DROP( 1241 "encryption configured, but RX " 1242 "frame not encrypted (SA=%pM)\n", 1243 hdr->addr2); 1244 goto rx_dropped; 1245 } 1246 } 1247 1248 #ifdef CONFIG_IEEE80211_DEBUG 1249 if (crypt && !(fc & IEEE80211_FCTL_WEP) && 1250 ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1251 struct eapol *eap = (struct eapol *)(skb->data + 1252 24); 1253 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", 1254 eap_get_type(eap->type)); 1255 } 1256 #endif 1257 1258 if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && 1259 !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1260 IEEE80211_DEBUG_DROP( 1261 "dropped unencrypted RX data " 1262 "frame from %pM" 1263 " (drop_unencrypted=1)\n", 1264 hdr->addr2); 1265 goto rx_dropped; 1266 } 1267 /* 1268 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { 1269 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); 1270 } 1271 */ 1272 //added by amy for reorder 1273 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) 1274 && !is_multicast_ether_addr(hdr->addr1)) 1275 { 1276 TID = Frame_QoSTID(skb->data); 1277 SeqNum = WLAN_GET_SEQ_SEQ(sc); 1278 GetTs(ieee,(PTS_COMMON_INFO *) &pTS,hdr->addr2,TID,RX_DIR,true); 1279 if (TID !=0 && TID !=3) 1280 { 1281 ieee->bis_any_nonbepkts = true; 1282 } 1283 } 1284 //added by amy for reorder 1285 /* skb: hdr + (possible reassembled) full plaintext payload */ 1286 payload = skb->data + hdrlen; 1287 //ethertype = (payload[6] << 8) | payload[7]; 1288 rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); 1289 if (!rxb) 1290 goto rx_dropped; 1291 /* to parse amsdu packets */ 1292 /* qos data packets & reserved bit is 1 */ 1293 if (parse_subframe(skb, rx_stats, rxb, src, dst) == 0) { 1294 /* only to free rxb, and not submit the packets to upper layer */ 1295 for(i =0; i < rxb->nr_subframes; i++) { 1296 dev_kfree_skb(rxb->subframes[i]); 1297 } 1298 kfree(rxb); 1299 rxb = NULL; 1300 goto rx_dropped; 1301 } 1302 1303 //added by amy for reorder 1304 if (!ieee->pHTInfo->bCurRxReorderEnable || pTS == NULL){ 1305 //added by amy for reorder 1306 for(i = 0; i<rxb->nr_subframes; i++) { 1307 struct sk_buff *sub_skb = rxb->subframes[i]; 1308 1309 if (sub_skb) { 1310 /* convert hdr + possible LLC headers into Ethernet header */ 1311 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; 1312 if (sub_skb->len >= 8 && 1313 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && 1314 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || 1315 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { 1316 /* remove RFC1042 or Bridge-Tunnel encapsulation and 1317 * replace EtherType */ 1318 skb_pull(sub_skb, SNAP_SIZE); 1319 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1320 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1321 } else { 1322 u16 len; 1323 /* Leave Ethernet header part of hdr and full payload */ 1324 len = htons(sub_skb->len); 1325 memcpy(skb_push(sub_skb, 2), &len, 2); 1326 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); 1327 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); 1328 } 1329 1330 stats->rx_packets++; 1331 stats->rx_bytes += sub_skb->len; 1332 if (is_multicast_ether_addr(dst)) { 1333 stats->multicast++; 1334 } 1335 1336 /* Indicat the packets to upper layer */ 1337 sub_skb->protocol = eth_type_trans(sub_skb, dev); 1338 memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); 1339 sub_skb->dev = dev; 1340 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ 1341 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ 1342 ieee->last_rx_ps_time = jiffies; 1343 netif_rx(sub_skb); 1344 } 1345 } 1346 kfree(rxb); 1347 rxb = NULL; 1348 1349 } 1350 else 1351 { 1352 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__); 1353 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); 1354 } 1355 #ifndef JOHN_NOCPY 1356 dev_kfree_skb(skb); 1357 #endif 1358 1359 rx_exit: 1360 #ifdef NOT_YET 1361 if (sta) 1362 hostap_handle_sta_release(sta); 1363 #endif 1364 return 1; 1365 1366 rx_dropped: 1367 kfree(rxb); 1368 rxb = NULL; 1369 stats->rx_dropped++; 1370 1371 /* Returning 0 indicates to caller that we have not handled the SKB-- 1372 * so it is still allocated and can be used again by underlying 1373 * hardware as a DMA target */ 1374 return 0; 1375 } 1376 EXPORT_SYMBOL(ieee80211_rx); 1377 1378 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 1379 1380 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; 1381 1382 /* 1383 * Make the structure we read from the beacon packet to have 1384 * the right values 1385 */ 1386 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element 1387 *info_element, int sub_type) 1388 { 1389 1390 if (info_element->qui_subtype != sub_type) 1391 return -1; 1392 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) 1393 return -1; 1394 if (info_element->qui_type != QOS_OUI_TYPE) 1395 return -1; 1396 if (info_element->version != QOS_VERSION_1) 1397 return -1; 1398 1399 return 0; 1400 } 1401 1402 1403 /* 1404 * Parse a QoS parameter element 1405 */ 1406 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info 1407 *element_param, struct ieee80211_info_element 1408 *info_element) 1409 { 1410 int ret = 0; 1411 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; 1412 1413 if ((info_element == NULL) || (element_param == NULL)) 1414 return -1; 1415 1416 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { 1417 memcpy(element_param->info_element.qui, info_element->data, 1418 info_element->len); 1419 element_param->info_element.elementID = info_element->id; 1420 element_param->info_element.length = info_element->len; 1421 } else 1422 ret = -1; 1423 if (ret == 0) 1424 ret = ieee80211_verify_qos_info(&element_param->info_element, 1425 QOS_OUI_PARAM_SUB_TYPE); 1426 return ret; 1427 } 1428 1429 /* 1430 * Parse a QoS information element 1431 */ 1432 static int ieee80211_read_qos_info_element(struct 1433 ieee80211_qos_information_element 1434 *element_info, struct ieee80211_info_element 1435 *info_element) 1436 { 1437 int ret = 0; 1438 u16 size = sizeof(struct ieee80211_qos_information_element) - 2; 1439 1440 if (element_info == NULL) 1441 return -1; 1442 if (info_element == NULL) 1443 return -1; 1444 1445 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { 1446 memcpy(element_info->qui, info_element->data, 1447 info_element->len); 1448 element_info->elementID = info_element->id; 1449 element_info->length = info_element->len; 1450 } else 1451 ret = -1; 1452 1453 if (ret == 0) 1454 ret = ieee80211_verify_qos_info(element_info, 1455 QOS_OUI_INFO_SUB_TYPE); 1456 return ret; 1457 } 1458 1459 1460 /* 1461 * Write QoS parameters from the ac parameters. 1462 */ 1463 static int ieee80211_qos_convert_ac_to_parameters(struct 1464 ieee80211_qos_parameter_info 1465 *param_elm, struct 1466 ieee80211_qos_parameters 1467 *qos_param) 1468 { 1469 int i; 1470 struct ieee80211_qos_ac_parameter *ac_params; 1471 u8 aci; 1472 //u8 cw_min; 1473 //u8 cw_max; 1474 1475 for (i = 0; i < QOS_QUEUE_NUM; i++) { 1476 ac_params = &(param_elm->ac_params_record[i]); 1477 1478 aci = (ac_params->aci_aifsn & 0x60) >> 5; 1479 1480 if(aci >= QOS_QUEUE_NUM) 1481 continue; 1482 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; 1483 1484 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ 1485 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; 1486 1487 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; 1488 1489 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; 1490 1491 qos_param->flag[aci] = 1492 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; 1493 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); 1494 } 1495 return 0; 1496 } 1497 1498 /* 1499 * we have a generic data element which it may contain QoS information or 1500 * parameters element. check the information element length to decide 1501 * which type to read 1502 */ 1503 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element 1504 *info_element, 1505 struct ieee80211_network *network) 1506 { 1507 int rc = 0; 1508 struct ieee80211_qos_parameters *qos_param = NULL; 1509 struct ieee80211_qos_information_element qos_info_element; 1510 1511 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); 1512 1513 if (rc == 0) { 1514 network->qos_data.param_count = qos_info_element.ac_info & 0x0F; 1515 network->flags |= NETWORK_HAS_QOS_INFORMATION; 1516 } else { 1517 struct ieee80211_qos_parameter_info param_element; 1518 1519 rc = ieee80211_read_qos_param_element(¶m_element, 1520 info_element); 1521 if (rc == 0) { 1522 qos_param = &(network->qos_data.parameters); 1523 ieee80211_qos_convert_ac_to_parameters(¶m_element, 1524 qos_param); 1525 network->flags |= NETWORK_HAS_QOS_PARAMETERS; 1526 network->qos_data.param_count = 1527 param_element.info_element.ac_info & 0x0F; 1528 } 1529 } 1530 1531 if (rc == 0) { 1532 IEEE80211_DEBUG_QOS("QoS is supported\n"); 1533 network->qos_data.supported = 1; 1534 } 1535 return rc; 1536 } 1537 1538 #ifdef CONFIG_IEEE80211_DEBUG 1539 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x 1540 1541 static const char *get_info_element_string(u16 id) 1542 { 1543 switch (id) { 1544 MFIE_STRING(SSID); 1545 MFIE_STRING(RATES); 1546 MFIE_STRING(FH_SET); 1547 MFIE_STRING(DS_SET); 1548 MFIE_STRING(CF_SET); 1549 MFIE_STRING(TIM); 1550 MFIE_STRING(IBSS_SET); 1551 MFIE_STRING(COUNTRY); 1552 MFIE_STRING(HOP_PARAMS); 1553 MFIE_STRING(HOP_TABLE); 1554 MFIE_STRING(REQUEST); 1555 MFIE_STRING(CHALLENGE); 1556 MFIE_STRING(POWER_CONSTRAINT); 1557 MFIE_STRING(POWER_CAPABILITY); 1558 MFIE_STRING(TPC_REQUEST); 1559 MFIE_STRING(TPC_REPORT); 1560 MFIE_STRING(SUPP_CHANNELS); 1561 MFIE_STRING(CSA); 1562 MFIE_STRING(MEASURE_REQUEST); 1563 MFIE_STRING(MEASURE_REPORT); 1564 MFIE_STRING(QUIET); 1565 MFIE_STRING(IBSS_DFS); 1566 // MFIE_STRING(ERP_INFO); 1567 MFIE_STRING(RSN); 1568 MFIE_STRING(RATES_EX); 1569 MFIE_STRING(GENERIC); 1570 MFIE_STRING(QOS_PARAMETER); 1571 default: 1572 return "UNKNOWN"; 1573 } 1574 } 1575 #endif 1576 1577 static inline void ieee80211_extract_country_ie( 1578 struct ieee80211_device *ieee, 1579 struct ieee80211_info_element *info_element, 1580 struct ieee80211_network *network, 1581 u8 *addr2 1582 ) 1583 { 1584 if (IS_DOT11D_ENABLE(ieee)) 1585 { 1586 if (info_element->len!= 0) 1587 { 1588 memcpy(network->CountryIeBuf, info_element->data, info_element->len); 1589 network->CountryIeLen = info_element->len; 1590 1591 if (!IS_COUNTRY_IE_VALID(ieee)) 1592 { 1593 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); 1594 } 1595 } 1596 1597 // 1598 // 070305, rcnjko: I update country IE watch dog here because 1599 // some AP (e.g. Cisco 1242) don't include country IE in their 1600 // probe response frame. 1601 // 1602 if (IS_EQUAL_CIE_SRC(ieee, addr2) ) 1603 { 1604 UPDATE_CIE_WATCHDOG(ieee); 1605 } 1606 } 1607 1608 } 1609 1610 int ieee80211_parse_info_param(struct ieee80211_device *ieee, 1611 struct ieee80211_info_element *info_element, 1612 u16 length, 1613 struct ieee80211_network *network, 1614 struct ieee80211_rx_stats *stats) 1615 { 1616 u8 i; 1617 short offset; 1618 u16 tmp_htcap_len=0; 1619 u16 tmp_htinfo_len=0; 1620 u16 ht_realtek_agg_len=0; 1621 u8 ht_realtek_agg_buf[MAX_IE_LEN]; 1622 // u16 broadcom_len = 0; 1623 #ifdef CONFIG_IEEE80211_DEBUG 1624 char rates_str[64]; 1625 char *p; 1626 #endif 1627 1628 while (length >= sizeof(*info_element)) { 1629 if (sizeof(*info_element) + info_element->len > length) { 1630 IEEE80211_DEBUG_MGMT("Info elem: parse failed: " 1631 "info_element->len + 2 > left : " 1632 "info_element->len+2=%zd left=%d, id=%d.\n", 1633 info_element->len + 1634 sizeof(*info_element), 1635 length, info_element->id); 1636 /* We stop processing but don't return an error here 1637 * because some misbehaviour APs break this rule. ie. 1638 * Orinoco AP1000. */ 1639 break; 1640 } 1641 1642 switch (info_element->id) { 1643 case MFIE_TYPE_SSID: 1644 if (ieee80211_is_empty_essid(info_element->data, 1645 info_element->len)) { 1646 network->flags |= NETWORK_EMPTY_ESSID; 1647 break; 1648 } 1649 1650 network->ssid_len = min(info_element->len, 1651 (u8) IW_ESSID_MAX_SIZE); 1652 memcpy(network->ssid, info_element->data, network->ssid_len); 1653 if (network->ssid_len < IW_ESSID_MAX_SIZE) 1654 memset(network->ssid + network->ssid_len, 0, 1655 IW_ESSID_MAX_SIZE - network->ssid_len); 1656 1657 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", 1658 network->ssid, network->ssid_len); 1659 break; 1660 1661 case MFIE_TYPE_RATES: 1662 #ifdef CONFIG_IEEE80211_DEBUG 1663 p = rates_str; 1664 #endif 1665 network->rates_len = min(info_element->len, 1666 MAX_RATES_LENGTH); 1667 for (i = 0; i < network->rates_len; i++) { 1668 network->rates[i] = info_element->data[i]; 1669 #ifdef CONFIG_IEEE80211_DEBUG 1670 p += snprintf(p, sizeof(rates_str) - 1671 (p - rates_str), "%02X ", 1672 network->rates[i]); 1673 #endif 1674 if (ieee80211_is_ofdm_rate 1675 (info_element->data[i])) { 1676 network->flags |= NETWORK_HAS_OFDM; 1677 if (info_element->data[i] & 1678 IEEE80211_BASIC_RATE_MASK) 1679 network->flags &= 1680 ~NETWORK_HAS_CCK; 1681 } 1682 } 1683 1684 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", 1685 rates_str, network->rates_len); 1686 break; 1687 1688 case MFIE_TYPE_RATES_EX: 1689 #ifdef CONFIG_IEEE80211_DEBUG 1690 p = rates_str; 1691 #endif 1692 network->rates_ex_len = min(info_element->len, 1693 MAX_RATES_EX_LENGTH); 1694 for (i = 0; i < network->rates_ex_len; i++) { 1695 network->rates_ex[i] = info_element->data[i]; 1696 #ifdef CONFIG_IEEE80211_DEBUG 1697 p += snprintf(p, sizeof(rates_str) - 1698 (p - rates_str), "%02X ", 1699 network->rates_ex[i]); 1700 #endif 1701 if (ieee80211_is_ofdm_rate 1702 (info_element->data[i])) { 1703 network->flags |= NETWORK_HAS_OFDM; 1704 if (info_element->data[i] & 1705 IEEE80211_BASIC_RATE_MASK) 1706 network->flags &= 1707 ~NETWORK_HAS_CCK; 1708 } 1709 } 1710 1711 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", 1712 rates_str, network->rates_ex_len); 1713 break; 1714 1715 case MFIE_TYPE_DS_SET: 1716 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", 1717 info_element->data[0]); 1718 network->channel = info_element->data[0]; 1719 break; 1720 1721 case MFIE_TYPE_FH_SET: 1722 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); 1723 break; 1724 1725 case MFIE_TYPE_CF_SET: 1726 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); 1727 break; 1728 1729 case MFIE_TYPE_TIM: 1730 if(info_element->len < 4) 1731 break; 1732 1733 network->tim.tim_count = info_element->data[0]; 1734 network->tim.tim_period = info_element->data[1]; 1735 1736 network->dtim_period = info_element->data[1]; 1737 if(ieee->state != IEEE80211_LINKED) 1738 break; 1739 1740 network->last_dtim_sta_time[0] = stats->mac_time[0]; 1741 network->last_dtim_sta_time[1] = stats->mac_time[1]; 1742 1743 network->dtim_data = IEEE80211_DTIM_VALID; 1744 1745 if(info_element->data[0] != 0) 1746 break; 1747 1748 if(info_element->data[2] & 1) 1749 network->dtim_data |= IEEE80211_DTIM_MBCAST; 1750 1751 offset = (info_element->data[2] >> 1)*2; 1752 1753 if(ieee->assoc_id < 8*offset || 1754 ieee->assoc_id > 8*(offset + info_element->len -3)) 1755 1756 break; 1757 1758 offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; 1759 1760 if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) 1761 network->dtim_data |= IEEE80211_DTIM_UCAST; 1762 1763 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); 1764 break; 1765 1766 case MFIE_TYPE_ERP: 1767 network->erp_value = info_element->data[0]; 1768 network->flags |= NETWORK_HAS_ERP_VALUE; 1769 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", 1770 network->erp_value); 1771 break; 1772 case MFIE_TYPE_IBSS_SET: 1773 network->atim_window = info_element->data[0]; 1774 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", 1775 network->atim_window); 1776 break; 1777 1778 case MFIE_TYPE_CHALLENGE: 1779 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); 1780 break; 1781 1782 case MFIE_TYPE_GENERIC: 1783 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", 1784 info_element->len); 1785 if (!ieee80211_parse_qos_info_param_IE(info_element, 1786 network)) 1787 break; 1788 1789 if (info_element->len >= 4 && 1790 info_element->data[0] == 0x00 && 1791 info_element->data[1] == 0x50 && 1792 info_element->data[2] == 0xf2 && 1793 info_element->data[3] == 0x01) { 1794 network->wpa_ie_len = min(info_element->len + 2, 1795 MAX_WPA_IE_LEN); 1796 memcpy(network->wpa_ie, info_element, 1797 network->wpa_ie_len); 1798 break; 1799 } 1800 1801 #ifdef THOMAS_TURBO 1802 if (info_element->len == 7 && 1803 info_element->data[0] == 0x00 && 1804 info_element->data[1] == 0xe0 && 1805 info_element->data[2] == 0x4c && 1806 info_element->data[3] == 0x01 && 1807 info_element->data[4] == 0x02) { 1808 network->Turbo_Enable = 1; 1809 } 1810 #endif 1811 1812 //for HTcap and HTinfo parameters 1813 if(tmp_htcap_len == 0){ 1814 if(info_element->len >= 4 && 1815 info_element->data[0] == 0x00 && 1816 info_element->data[1] == 0x90 && 1817 info_element->data[2] == 0x4c && 1818 info_element->data[3] == 0x033){ 1819 1820 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 1821 if(tmp_htcap_len != 0){ 1822 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1823 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 1824 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 1825 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 1826 } 1827 } 1828 if(tmp_htcap_len != 0) 1829 network->bssht.bdSupportHT = true; 1830 else 1831 network->bssht.bdSupportHT = false; 1832 } 1833 1834 1835 if(tmp_htinfo_len == 0){ 1836 if(info_element->len >= 4 && 1837 info_element->data[0] == 0x00 && 1838 info_element->data[1] == 0x90 && 1839 info_element->data[2] == 0x4c && 1840 info_element->data[3] == 0x034){ 1841 1842 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 1843 if(tmp_htinfo_len != 0){ 1844 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 1845 if(tmp_htinfo_len){ 1846 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 1847 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 1848 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 1849 } 1850 1851 } 1852 1853 } 1854 } 1855 1856 if(ieee->aggregation){ 1857 if(network->bssht.bdSupportHT){ 1858 if(info_element->len >= 4 && 1859 info_element->data[0] == 0x00 && 1860 info_element->data[1] == 0xe0 && 1861 info_element->data[2] == 0x4c && 1862 info_element->data[3] == 0x02){ 1863 1864 ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); 1865 memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); 1866 1867 } 1868 if(ht_realtek_agg_len >= 5){ 1869 network->bssht.bdRT2RTAggregation = true; 1870 1871 if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) 1872 network->bssht.bdRT2RTLongSlotTime = true; 1873 } 1874 } 1875 1876 } 1877 1878 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) 1879 { 1880 if ((info_element->len >= 3 && 1881 info_element->data[0] == 0x00 && 1882 info_element->data[1] == 0x05 && 1883 info_element->data[2] == 0xb5) || 1884 (info_element->len >= 3 && 1885 info_element->data[0] == 0x00 && 1886 info_element->data[1] == 0x0a && 1887 info_element->data[2] == 0xf7) || 1888 (info_element->len >= 3 && 1889 info_element->data[0] == 0x00 && 1890 info_element->data[1] == 0x10 && 1891 info_element->data[2] == 0x18)){ 1892 1893 network->broadcom_cap_exist = true; 1894 1895 } 1896 } 1897 if(info_element->len >= 3 && 1898 info_element->data[0] == 0x00 && 1899 info_element->data[1] == 0x0c && 1900 info_element->data[2] == 0x43) 1901 { 1902 network->ralink_cap_exist = true; 1903 } 1904 else 1905 network->ralink_cap_exist = false; 1906 //added by amy for atheros AP 1907 if((info_element->len >= 3 && 1908 info_element->data[0] == 0x00 && 1909 info_element->data[1] == 0x03 && 1910 info_element->data[2] == 0x7f) || 1911 (info_element->len >= 3 && 1912 info_element->data[0] == 0x00 && 1913 info_element->data[1] == 0x13 && 1914 info_element->data[2] == 0x74)) 1915 { 1916 printk("========>%s(): athros AP is exist\n",__func__); 1917 network->atheros_cap_exist = true; 1918 } 1919 else 1920 network->atheros_cap_exist = false; 1921 1922 if(info_element->len >= 3 && 1923 info_element->data[0] == 0x00 && 1924 info_element->data[1] == 0x40 && 1925 info_element->data[2] == 0x96) 1926 { 1927 network->cisco_cap_exist = true; 1928 } 1929 else 1930 network->cisco_cap_exist = false; 1931 //added by amy for LEAP of cisco 1932 if (info_element->len > 4 && 1933 info_element->data[0] == 0x00 && 1934 info_element->data[1] == 0x40 && 1935 info_element->data[2] == 0x96 && 1936 info_element->data[3] == 0x01) 1937 { 1938 if(info_element->len == 6) 1939 { 1940 memcpy(network->CcxRmState, &info_element[4], 2); 1941 if(network->CcxRmState[0] != 0) 1942 { 1943 network->bCcxRmEnable = true; 1944 } 1945 else 1946 network->bCcxRmEnable = false; 1947 // 1948 // CCXv4 Table 59-1 MBSSID Masks. 1949 // 1950 network->MBssidMask = network->CcxRmState[1] & 0x07; 1951 if(network->MBssidMask != 0) 1952 { 1953 network->bMBssidValid = true; 1954 network->MBssidMask = 0xff << (network->MBssidMask); 1955 cpMacAddr(network->MBssid, network->bssid); 1956 network->MBssid[5] &= network->MBssidMask; 1957 } 1958 else 1959 { 1960 network->bMBssidValid = false; 1961 } 1962 } 1963 else 1964 { 1965 network->bCcxRmEnable = false; 1966 } 1967 } 1968 if (info_element->len > 4 && 1969 info_element->data[0] == 0x00 && 1970 info_element->data[1] == 0x40 && 1971 info_element->data[2] == 0x96 && 1972 info_element->data[3] == 0x03) 1973 { 1974 if(info_element->len == 5) 1975 { 1976 network->bWithCcxVerNum = true; 1977 network->BssCcxVerNumber = info_element->data[4]; 1978 } 1979 else 1980 { 1981 network->bWithCcxVerNum = false; 1982 network->BssCcxVerNumber = 0; 1983 } 1984 } 1985 break; 1986 1987 case MFIE_TYPE_RSN: 1988 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", 1989 info_element->len); 1990 network->rsn_ie_len = min(info_element->len + 2, 1991 MAX_WPA_IE_LEN); 1992 memcpy(network->rsn_ie, info_element, 1993 network->rsn_ie_len); 1994 break; 1995 1996 //HT related element. 1997 case MFIE_TYPE_HT_CAP: 1998 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", 1999 info_element->len); 2000 tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); 2001 if(tmp_htcap_len != 0){ 2002 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; 2003 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ 2004 sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; 2005 memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); 2006 2007 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() 2008 // windows driver will update WMM parameters each beacon received once connected 2009 // Linux driver is a bit different. 2010 network->bssht.bdSupportHT = true; 2011 } 2012 else 2013 network->bssht.bdSupportHT = false; 2014 break; 2015 2016 2017 case MFIE_TYPE_HT_INFO: 2018 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", 2019 info_element->len); 2020 tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); 2021 if(tmp_htinfo_len){ 2022 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; 2023 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ 2024 sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; 2025 memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); 2026 } 2027 break; 2028 2029 case MFIE_TYPE_AIRONET: 2030 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", 2031 info_element->len); 2032 if(info_element->len >IE_CISCO_FLAG_POSITION) 2033 { 2034 network->bWithAironetIE = true; 2035 2036 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): 2037 // "A Cisco access point advertises support for CKIP in beacon and probe response packets, 2038 // by adding an Aironet element and setting one or both of the CKIP negotiation bits." 2039 if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || 2040 (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) 2041 { 2042 network->bCkipSupported = true; 2043 } 2044 else 2045 { 2046 network->bCkipSupported = false; 2047 } 2048 } 2049 else 2050 { 2051 network->bWithAironetIE = false; 2052 network->bCkipSupported = false; 2053 } 2054 break; 2055 case MFIE_TYPE_QOS_PARAMETER: 2056 printk(KERN_ERR 2057 "QoS Error need to parse QOS_PARAMETER IE\n"); 2058 break; 2059 2060 case MFIE_TYPE_COUNTRY: 2061 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", 2062 info_element->len); 2063 ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP 2064 break; 2065 /* TODO */ 2066 default: 2067 IEEE80211_DEBUG_MGMT 2068 ("Unsupported info element: %s (%d)\n", 2069 get_info_element_string(info_element->id), 2070 info_element->id); 2071 break; 2072 } 2073 2074 length -= sizeof(*info_element) + info_element->len; 2075 info_element = 2076 (struct ieee80211_info_element *)&info_element-> 2077 data[info_element->len]; 2078 } 2079 2080 if(!network->atheros_cap_exist && !network->broadcom_cap_exist && 2081 !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) 2082 { 2083 network->unknown_cap_exist = true; 2084 } 2085 else 2086 { 2087 network->unknown_cap_exist = false; 2088 } 2089 return 0; 2090 } 2091 2092 static inline u8 ieee80211_SignalStrengthTranslate( 2093 u8 CurrSS 2094 ) 2095 { 2096 u8 RetSS; 2097 2098 // Step 1. Scale mapping. 2099 if(CurrSS >= 71 && CurrSS <= 100) 2100 { 2101 RetSS = 90 + ((CurrSS - 70) / 3); 2102 } 2103 else if(CurrSS >= 41 && CurrSS <= 70) 2104 { 2105 RetSS = 78 + ((CurrSS - 40) / 3); 2106 } 2107 else if(CurrSS >= 31 && CurrSS <= 40) 2108 { 2109 RetSS = 66 + (CurrSS - 30); 2110 } 2111 else if(CurrSS >= 21 && CurrSS <= 30) 2112 { 2113 RetSS = 54 + (CurrSS - 20); 2114 } 2115 else if(CurrSS >= 5 && CurrSS <= 20) 2116 { 2117 RetSS = 42 + (((CurrSS - 5) * 2) / 3); 2118 } 2119 else if(CurrSS == 4) 2120 { 2121 RetSS = 36; 2122 } 2123 else if(CurrSS == 3) 2124 { 2125 RetSS = 27; 2126 } 2127 else if(CurrSS == 2) 2128 { 2129 RetSS = 18; 2130 } 2131 else if(CurrSS == 1) 2132 { 2133 RetSS = 9; 2134 } 2135 else 2136 { 2137 RetSS = CurrSS; 2138 } 2139 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2140 2141 // Step 2. Smoothing. 2142 2143 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); 2144 2145 return RetSS; 2146 } 2147 2148 /* 0-100 index */ 2149 static long ieee80211_translate_todbm(u8 signal_strength_index) 2150 { 2151 long signal_power; // in dBm. 2152 2153 // Translate to dBm (x=0.5y-95). 2154 signal_power = (long)((signal_strength_index + 1) >> 1); 2155 signal_power -= 95; 2156 2157 return signal_power; 2158 } 2159 2160 static inline int ieee80211_network_init( 2161 struct ieee80211_device *ieee, 2162 struct ieee80211_probe_response *beacon, 2163 struct ieee80211_network *network, 2164 struct ieee80211_rx_stats *stats) 2165 { 2166 #ifdef CONFIG_IEEE80211_DEBUG 2167 //char rates_str[64]; 2168 //char *p; 2169 #endif 2170 2171 network->qos_data.active = 0; 2172 network->qos_data.supported = 0; 2173 network->qos_data.param_count = 0; 2174 network->qos_data.old_param_count = 0; 2175 2176 /* Pull out fixed field data */ 2177 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); 2178 network->capability = le16_to_cpu(beacon->capability); 2179 network->last_scanned = jiffies; 2180 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); 2181 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); 2182 network->beacon_interval = le16_to_cpu(beacon->beacon_interval); 2183 /* Where to pull this? beacon->listen_interval;*/ 2184 network->listen_interval = 0x0A; 2185 network->rates_len = network->rates_ex_len = 0; 2186 network->last_associate = 0; 2187 network->ssid_len = 0; 2188 network->flags = 0; 2189 network->atim_window = 0; 2190 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? 2191 0x3 : 0x0; 2192 network->berp_info_valid = false; 2193 network->broadcom_cap_exist = false; 2194 network->ralink_cap_exist = false; 2195 network->atheros_cap_exist = false; 2196 network->cisco_cap_exist = false; 2197 network->unknown_cap_exist = false; 2198 #ifdef THOMAS_TURBO 2199 network->Turbo_Enable = 0; 2200 #endif 2201 network->CountryIeLen = 0; 2202 memset(network->CountryIeBuf, 0, MAX_IE_LEN); 2203 //Initialize HT parameters 2204 //ieee80211_ht_initialize(&network->bssht); 2205 HTInitializeBssDesc(&network->bssht); 2206 if (stats->freq == IEEE80211_52GHZ_BAND) { 2207 /* for A band (No DS info) */ 2208 network->channel = stats->received_channel; 2209 } else 2210 network->flags |= NETWORK_HAS_CCK; 2211 2212 network->wpa_ie_len = 0; 2213 network->rsn_ie_len = 0; 2214 2215 if (ieee80211_parse_info_param 2216 (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) 2217 return 1; 2218 2219 network->mode = 0; 2220 if (stats->freq == IEEE80211_52GHZ_BAND) 2221 network->mode = IEEE_A; 2222 else { 2223 if (network->flags & NETWORK_HAS_OFDM) 2224 network->mode |= IEEE_G; 2225 if (network->flags & NETWORK_HAS_CCK) 2226 network->mode |= IEEE_B; 2227 } 2228 2229 if (network->mode == 0) { 2230 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' " 2231 "network.\n", 2232 escape_essid(network->ssid, 2233 network->ssid_len), 2234 network->bssid); 2235 return 1; 2236 } 2237 2238 if(network->bssht.bdSupportHT){ 2239 if(network->mode == IEEE_A) 2240 network->mode = IEEE_N_5G; 2241 else if(network->mode & (IEEE_G | IEEE_B)) 2242 network->mode = IEEE_N_24G; 2243 } 2244 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) 2245 network->flags |= NETWORK_EMPTY_ESSID; 2246 2247 stats->signal = 30 + (stats->SignalStrength * 70) / 100; 2248 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); 2249 stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; 2250 2251 memcpy(&network->stats, stats, sizeof(network->stats)); 2252 2253 return 0; 2254 } 2255 2256 static inline int is_same_network(struct ieee80211_network *src, 2257 struct ieee80211_network *dst, struct ieee80211_device *ieee) 2258 { 2259 /* A network is only a duplicate if the channel, BSSID, ESSID 2260 * and the capability field (in particular IBSS and BSS) all match. 2261 * We treat all <hidden> with the same BSSID and channel 2262 * as one network */ 2263 return //((src->ssid_len == dst->ssid_len) && 2264 (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2265 (src->channel == dst->channel) && 2266 !memcmp(src->bssid, dst->bssid, ETH_ALEN) && 2267 //!memcmp(src->ssid, dst->ssid, src->ssid_len) && 2268 (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && 2269 ((src->capability & WLAN_CAPABILITY_IBSS) == 2270 (dst->capability & WLAN_CAPABILITY_IBSS)) && 2271 ((src->capability & WLAN_CAPABILITY_BSS) == 2272 (dst->capability & WLAN_CAPABILITY_BSS))); 2273 } 2274 2275 static inline void update_network(struct ieee80211_network *dst, 2276 struct ieee80211_network *src) 2277 { 2278 int qos_active; 2279 u8 old_param; 2280 2281 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); 2282 dst->capability = src->capability; 2283 memcpy(dst->rates, src->rates, src->rates_len); 2284 dst->rates_len = src->rates_len; 2285 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); 2286 dst->rates_ex_len = src->rates_ex_len; 2287 if (src->ssid_len > 0) 2288 { 2289 memset(dst->ssid, 0, dst->ssid_len); 2290 dst->ssid_len = src->ssid_len; 2291 memcpy(dst->ssid, src->ssid, src->ssid_len); 2292 } 2293 dst->mode = src->mode; 2294 dst->flags = src->flags; 2295 dst->time_stamp[0] = src->time_stamp[0]; 2296 dst->time_stamp[1] = src->time_stamp[1]; 2297 if (src->flags & NETWORK_HAS_ERP_VALUE) 2298 { 2299 dst->erp_value = src->erp_value; 2300 dst->berp_info_valid = src->berp_info_valid = true; 2301 } 2302 dst->beacon_interval = src->beacon_interval; 2303 dst->listen_interval = src->listen_interval; 2304 dst->atim_window = src->atim_window; 2305 dst->dtim_period = src->dtim_period; 2306 dst->dtim_data = src->dtim_data; 2307 dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; 2308 dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; 2309 memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); 2310 2311 dst->bssht.bdSupportHT = src->bssht.bdSupportHT; 2312 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; 2313 dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; 2314 memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); 2315 dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; 2316 memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); 2317 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; 2318 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; 2319 dst->broadcom_cap_exist = src->broadcom_cap_exist; 2320 dst->ralink_cap_exist = src->ralink_cap_exist; 2321 dst->atheros_cap_exist = src->atheros_cap_exist; 2322 dst->cisco_cap_exist = src->cisco_cap_exist; 2323 dst->unknown_cap_exist = src->unknown_cap_exist; 2324 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); 2325 dst->wpa_ie_len = src->wpa_ie_len; 2326 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); 2327 dst->rsn_ie_len = src->rsn_ie_len; 2328 2329 dst->last_scanned = jiffies; 2330 /* qos related parameters */ 2331 //qos_active = src->qos_data.active; 2332 qos_active = dst->qos_data.active; 2333 //old_param = dst->qos_data.old_param_count; 2334 old_param = dst->qos_data.param_count; 2335 if(dst->flags & NETWORK_HAS_QOS_MASK) 2336 memcpy(&dst->qos_data, &src->qos_data, 2337 sizeof(struct ieee80211_qos_data)); 2338 else { 2339 dst->qos_data.supported = src->qos_data.supported; 2340 dst->qos_data.param_count = src->qos_data.param_count; 2341 } 2342 2343 if (dst->qos_data.supported == 1) { 2344 dst->QoS_Enable = 1; 2345 if(dst->ssid_len) 2346 IEEE80211_DEBUG_QOS 2347 ("QoS the network %s is QoS supported\n", 2348 dst->ssid); 2349 else 2350 IEEE80211_DEBUG_QOS 2351 ("QoS the network is QoS supported\n"); 2352 } 2353 dst->qos_data.active = qos_active; 2354 dst->qos_data.old_param_count = old_param; 2355 2356 /* dst->last_associate is not overwritten */ 2357 dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. 2358 if (src->wmm_param[0].aci_aifsn|| \ 2359 src->wmm_param[1].aci_aifsn|| \ 2360 src->wmm_param[2].aci_aifsn|| \ 2361 src->wmm_param[3].aci_aifsn) { 2362 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); 2363 } 2364 //dst->QoS_Enable = src->QoS_Enable; 2365 #ifdef THOMAS_TURBO 2366 dst->Turbo_Enable = src->Turbo_Enable; 2367 #endif 2368 2369 dst->CountryIeLen = src->CountryIeLen; 2370 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); 2371 2372 //added by amy for LEAP 2373 dst->bWithAironetIE = src->bWithAironetIE; 2374 dst->bCkipSupported = src->bCkipSupported; 2375 memcpy(dst->CcxRmState, src->CcxRmState, 2); 2376 dst->bCcxRmEnable = src->bCcxRmEnable; 2377 dst->MBssidMask = src->MBssidMask; 2378 dst->bMBssidValid = src->bMBssidValid; 2379 memcpy(dst->MBssid, src->MBssid, 6); 2380 dst->bWithCcxVerNum = src->bWithCcxVerNum; 2381 dst->BssCcxVerNumber = src->BssCcxVerNumber; 2382 2383 } 2384 2385 static inline int is_beacon(__le16 fc) 2386 { 2387 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); 2388 } 2389 2390 static inline void ieee80211_process_probe_response( 2391 struct ieee80211_device *ieee, 2392 struct ieee80211_probe_response *beacon, 2393 struct ieee80211_rx_stats *stats) 2394 { 2395 struct ieee80211_network network; 2396 struct ieee80211_network *target; 2397 struct ieee80211_network *oldest = NULL; 2398 #ifdef CONFIG_IEEE80211_DEBUG 2399 struct ieee80211_info_element *info_element = &beacon->info_element[0]; 2400 #endif 2401 unsigned long flags; 2402 short renew; 2403 //u8 wmm_info; 2404 2405 memset(&network, 0, sizeof(struct ieee80211_network)); 2406 IEEE80211_DEBUG_SCAN( 2407 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", 2408 escape_essid(info_element->data, info_element->len), 2409 beacon->header.addr3, 2410 (beacon->capability & (1<<0xf)) ? '1' : '0', 2411 (beacon->capability & (1<<0xe)) ? '1' : '0', 2412 (beacon->capability & (1<<0xd)) ? '1' : '0', 2413 (beacon->capability & (1<<0xc)) ? '1' : '0', 2414 (beacon->capability & (1<<0xb)) ? '1' : '0', 2415 (beacon->capability & (1<<0xa)) ? '1' : '0', 2416 (beacon->capability & (1<<0x9)) ? '1' : '0', 2417 (beacon->capability & (1<<0x8)) ? '1' : '0', 2418 (beacon->capability & (1<<0x7)) ? '1' : '0', 2419 (beacon->capability & (1<<0x6)) ? '1' : '0', 2420 (beacon->capability & (1<<0x5)) ? '1' : '0', 2421 (beacon->capability & (1<<0x4)) ? '1' : '0', 2422 (beacon->capability & (1<<0x3)) ? '1' : '0', 2423 (beacon->capability & (1<<0x2)) ? '1' : '0', 2424 (beacon->capability & (1<<0x1)) ? '1' : '0', 2425 (beacon->capability & (1<<0x0)) ? '1' : '0'); 2426 2427 if (ieee80211_network_init(ieee, beacon, &network, stats)) { 2428 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n", 2429 escape_essid(info_element->data, 2430 info_element->len), 2431 beacon->header.addr3, 2432 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2433 IEEE80211_STYPE_PROBE_RESP ? 2434 "PROBE RESPONSE" : "BEACON"); 2435 return; 2436 } 2437 2438 // For Asus EeePc request, 2439 // (1) if wireless adapter receive get any 802.11d country code in AP beacon, 2440 // wireless adapter should follow the country code. 2441 // (2) If there is no any country code in beacon, 2442 // then wireless adapter should do active scan from ch1~11 and 2443 // passive scan from ch12~14 2444 2445 if (!IsLegalChannel(ieee, network.channel)) 2446 return; 2447 if (ieee->bGlobalDomain) 2448 { 2449 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) 2450 { 2451 // Case 1: Country code 2452 if(IS_COUNTRY_IE_VALID(ieee) ) 2453 { 2454 if (!IsLegalChannel(ieee, network.channel)) { 2455 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); 2456 return; 2457 } 2458 } 2459 // Case 2: No any country code. 2460 else 2461 { 2462 // Filter over channel ch12~14 2463 if (network.channel > 11) 2464 { 2465 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); 2466 return; 2467 } 2468 } 2469 } 2470 else 2471 { 2472 // Case 1: Country code 2473 if(IS_COUNTRY_IE_VALID(ieee) ) 2474 { 2475 if (!IsLegalChannel(ieee, network.channel)) { 2476 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); 2477 return; 2478 } 2479 } 2480 // Case 2: No any country code. 2481 else 2482 { 2483 // Filter over channel ch12~14 2484 if (network.channel > 14) 2485 { 2486 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); 2487 return; 2488 } 2489 } 2490 } 2491 } 2492 2493 /* The network parsed correctly -- so now we scan our known networks 2494 * to see if we can find it in our list. 2495 * 2496 * NOTE: This search is definitely not optimized. Once its doing 2497 * the "right thing" we'll optimize it for efficiency if 2498 * necessary */ 2499 2500 /* Search for this entry in the list and update it if it is 2501 * already there. */ 2502 2503 spin_lock_irqsave(&ieee->lock, flags); 2504 2505 if (is_same_network(&ieee->current_network, &network, ieee)) { 2506 update_network(&ieee->current_network, &network); 2507 if ((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) 2508 && ieee->current_network.berp_info_valid){ 2509 if(ieee->current_network.erp_value& ERP_UseProtection) 2510 ieee->current_network.buseprotection = true; 2511 else 2512 ieee->current_network.buseprotection = false; 2513 } 2514 if(is_beacon(beacon->header.frame_ctl)) 2515 { 2516 if(ieee->state == IEEE80211_LINKED) 2517 ieee->LinkDetectInfo.NumRecvBcnInPeriod++; 2518 } 2519 else //hidden AP 2520 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); 2521 } 2522 2523 list_for_each_entry(target, &ieee->network_list, list) { 2524 if (is_same_network(target, &network, ieee)) 2525 break; 2526 if ((oldest == NULL) || 2527 (target->last_scanned < oldest->last_scanned)) 2528 oldest = target; 2529 } 2530 2531 /* If we didn't find a match, then get a new network slot to initialize 2532 * with this beacon's information */ 2533 if (&target->list == &ieee->network_list) { 2534 if (list_empty(&ieee->network_free_list)) { 2535 /* If there are no more slots, expire the oldest */ 2536 list_del(&oldest->list); 2537 target = oldest; 2538 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from " 2539 "network list.\n", 2540 escape_essid(target->ssid, 2541 target->ssid_len), 2542 target->bssid); 2543 } else { 2544 /* Otherwise just pull from the free list */ 2545 target = list_entry(ieee->network_free_list.next, 2546 struct ieee80211_network, list); 2547 list_del(ieee->network_free_list.next); 2548 } 2549 2550 2551 #ifdef CONFIG_IEEE80211_DEBUG 2552 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n", 2553 escape_essid(network.ssid, 2554 network.ssid_len), 2555 network.bssid, 2556 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2557 IEEE80211_STYPE_PROBE_RESP ? 2558 "PROBE RESPONSE" : "BEACON"); 2559 #endif 2560 memcpy(target, &network, sizeof(*target)); 2561 list_add_tail(&target->list, &ieee->network_list); 2562 if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) 2563 ieee80211_softmac_new_net(ieee,&network); 2564 } else { 2565 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n", 2566 escape_essid(target->ssid, 2567 target->ssid_len), 2568 target->bssid, 2569 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == 2570 IEEE80211_STYPE_PROBE_RESP ? 2571 "PROBE RESPONSE" : "BEACON"); 2572 2573 /* we have an entry and we are going to update it. But this entry may 2574 * be already expired. In this case we do the same as we found a new 2575 * net and call the new_net handler 2576 */ 2577 renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); 2578 //YJ,add,080819,for hidden ap 2579 if(is_beacon(beacon->header.frame_ctl) == 0) 2580 network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); 2581 //if(strncmp(network.ssid, "linksys-c",9) == 0) 2582 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); 2583 if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ 2584 && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ 2585 ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) 2586 renew = 1; 2587 //YJ,add,080819,for hidden ap,end 2588 2589 update_network(target, &network); 2590 if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) 2591 ieee80211_softmac_new_net(ieee,&network); 2592 } 2593 2594 spin_unlock_irqrestore(&ieee->lock, flags); 2595 if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ 2596 (ieee->state == IEEE80211_LINKED)) { 2597 if (ieee->handle_beacon != NULL) { 2598 ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); 2599 } 2600 } 2601 } 2602 2603 void ieee80211_rx_mgt(struct ieee80211_device *ieee, 2604 struct rtl_80211_hdr_4addr *header, 2605 struct ieee80211_rx_stats *stats) 2606 { 2607 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { 2608 2609 case IEEE80211_STYPE_BEACON: 2610 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", 2611 WLAN_FC_GET_STYPE(header->frame_ctl)); 2612 IEEE80211_DEBUG_SCAN("Beacon\n"); 2613 ieee80211_process_probe_response( 2614 ieee, (struct ieee80211_probe_response *)header, stats); 2615 break; 2616 2617 case IEEE80211_STYPE_PROBE_RESP: 2618 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", 2619 WLAN_FC_GET_STYPE(header->frame_ctl)); 2620 IEEE80211_DEBUG_SCAN("Probe response\n"); 2621 ieee80211_process_probe_response( 2622 ieee, (struct ieee80211_probe_response *)header, stats); 2623 break; 2624 2625 } 2626 } 2627 EXPORT_SYMBOL(ieee80211_rx_mgt); 2628