2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
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
14 ******************************************************************************
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
19 A special thanks goes to Realtek for their support !
21 ******************************************************************************/
24 #include <linux/compiler.h>
25 #include <linux/errno.h>
26 #include <linux/if_arp.h>
27 #include <linux/in6.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/version.h>
40 #include <linux/wireless.h>
41 #include <linux/etherdevice.h>
42 #include <linux/uaccess.h>
43 #include <linux/ctype.h>
48 static inline void rtllib_monitor_rx(struct rtllib_device *ieee,
49 struct sk_buff *skb, struct rtllib_rx_stats *rx_status,
53 skb_reset_mac_header(skb);
54 skb_pull(skb, hdr_length);
55 skb->pkt_type = PACKET_OTHERHOST;
56 skb->protocol = __constant_htons(ETH_P_80211_RAW);
57 memset(skb->cb, 0, sizeof(skb->cb));
61 /* Called only as a tasklet (software IRQ) */
62 static struct rtllib_frag_entry *
63 rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
64 unsigned int frag, u8 tid, u8 *src, u8 *dst)
66 struct rtllib_frag_entry *entry;
69 for (i = 0; i < RTLLIB_FRAG_CACHE_LEN; i++) {
70 entry = &ieee->frag_cache[tid][i];
71 if (entry->skb != NULL &&
72 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
74 "expiring fragment cache entry "
75 "seq=%u last_frag=%u\n",
76 entry->seq, entry->last_frag);
77 dev_kfree_skb_any(entry->skb);
81 if (entry->skb != NULL && entry->seq == seq &&
82 (entry->last_frag + 1 == frag || frag == -1) &&
83 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
84 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
91 /* Called only as a tasklet (software IRQ) */
92 static struct sk_buff *
93 rtllib_frag_cache_get(struct rtllib_device *ieee,
94 struct rtllib_hdr_4addr *hdr)
96 struct sk_buff *skb = NULL;
97 u16 fc = le16_to_cpu(hdr->frame_ctl);
98 u16 sc = le16_to_cpu(hdr->seq_ctl);
99 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
100 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
101 struct rtllib_frag_entry *entry;
102 struct rtllib_hdr_3addrqos *hdr_3addrqos;
103 struct rtllib_hdr_4addrqos *hdr_4addrqos;
106 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
107 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
108 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
111 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
112 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
113 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
121 /* Reserve enough space to fit maximum frame length */
122 skb = dev_alloc_skb(ieee->dev->mtu +
123 sizeof(struct rtllib_hdr_4addr) +
128 (RTLLIB_QOS_HAS_SEQ(fc) ? 2 : 0) /* QOS Control */);
132 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
133 ieee->frag_next_idx[tid]++;
134 if (ieee->frag_next_idx[tid] >= RTLLIB_FRAG_CACHE_LEN)
135 ieee->frag_next_idx[tid] = 0;
137 if (entry->skb != NULL)
138 dev_kfree_skb_any(entry->skb);
140 entry->first_frag_time = jiffies;
142 entry->last_frag = frag;
144 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
145 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
147 /* received a fragment of a frame for which the head fragment
148 * should have already been received */
149 entry = rtllib_frag_cache_find(ieee, seq, frag, tid, hdr->addr2,
152 entry->last_frag = frag;
161 /* Called only as a tasklet (software IRQ) */
162 static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee,
163 struct rtllib_hdr_4addr *hdr)
165 u16 fc = le16_to_cpu(hdr->frame_ctl);
166 u16 sc = le16_to_cpu(hdr->seq_ctl);
167 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
168 struct rtllib_frag_entry *entry;
169 struct rtllib_hdr_3addrqos *hdr_3addrqos;
170 struct rtllib_hdr_4addrqos *hdr_4addrqos;
173 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
174 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
175 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
178 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
179 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
180 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
187 entry = rtllib_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
192 "could not invalidate fragment cache "
193 "entry (seq=%u)\n", seq);
201 /* rtllib_rx_frame_mgtmt
203 * Responsible for handling management control frames
205 * Called by rtllib_rx */
207 rtllib_rx_frame_mgmt(struct rtllib_device *ieee, struct sk_buff *skb,
208 struct rtllib_rx_stats *rx_stats, u16 type,
211 /* On the struct stats definition there is written that
212 * this is not mandatory.... but seems that the probe
213 * response parser uses it
215 struct rtllib_hdr_3addr * hdr = (struct rtllib_hdr_3addr *)skb->data;
217 rx_stats->len = skb->len;
218 rtllib_rx_mgt(ieee, skb, rx_stats);
219 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN))) {
220 dev_kfree_skb_any(skb);
223 rtllib_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
225 dev_kfree_skb_any(skb);
230 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
231 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
232 static unsigned char rfc1042_header[] = {
233 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
235 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
236 static unsigned char bridge_tunnel_header[] = {
237 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
239 /* No encapsulation header if EtherType < 0x600 (=length) */
241 /* Called by rtllib_rx_frame_decrypt */
242 static int rtllib_is_eapol_frame(struct rtllib_device *ieee,
243 struct sk_buff *skb, size_t hdrlen)
245 struct net_device *dev = ieee->dev;
247 struct rtllib_hdr_4addr *hdr;
253 hdr = (struct rtllib_hdr_4addr *) skb->data;
254 fc = le16_to_cpu(hdr->frame_ctl);
256 /* check that the frame is unicast frame to us */
257 if ((fc & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
259 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
260 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
261 /* ToDS frame with own addr BSSID and DA */
262 } else if ((fc & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
263 RTLLIB_FCTL_FROMDS &&
264 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
265 /* FromDS frame with own addr as DA */
269 if (skb->len < 24 + 8)
272 /* check for port access entity Ethernet type */
273 pos = skb->data + hdrlen;
274 ethertype = (pos[6] << 8) | pos[7];
275 if (ethertype == ETH_P_PAE)
281 /* Called only as a tasklet (software IRQ), by rtllib_rx */
283 rtllib_rx_frame_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
284 struct rtllib_crypt_data *crypt)
286 struct rtllib_hdr_4addr *hdr;
289 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
292 if (ieee->hwsec_active) {
293 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
294 tcb_desc->bHwSec = 1;
296 if (ieee->need_sw_enc)
297 tcb_desc->bHwSec = 0;
300 hdr = (struct rtllib_hdr_4addr *) skb->data;
301 hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
303 atomic_inc(&crypt->refcnt);
304 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
305 atomic_dec(&crypt->refcnt);
308 "decryption failed (SA= %pM"
309 ") res=%d\n", hdr->addr2, res);
311 RTLLIB_DEBUG_DROP("Decryption failed ICV "
312 "mismatch (key %d)\n",
313 skb->data[hdrlen + 3] >> 6);
314 ieee->ieee_stats.rx_discards_undecryptable++;
322 /* Called only as a tasklet (software IRQ), by rtllib_rx */
324 rtllib_rx_frame_decrypt_msdu(struct rtllib_device *ieee, struct sk_buff *skb,
325 int keyidx, struct rtllib_crypt_data *crypt)
327 struct rtllib_hdr_4addr *hdr;
330 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
332 if (ieee->hwsec_active) {
333 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
334 tcb_desc->bHwSec = 1;
336 if (ieee->need_sw_enc)
337 tcb_desc->bHwSec = 0;
340 hdr = (struct rtllib_hdr_4addr *) skb->data;
341 hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
343 atomic_inc(&crypt->refcnt);
344 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv, ieee);
345 atomic_dec(&crypt->refcnt);
347 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
348 " (SA= %pM keyidx=%d)\n",
349 ieee->dev->name, hdr->addr2, keyidx);
357 /* this function is stolen from ipw2200 driver*/
358 #define IEEE_PACKET_RETRY_TIME (5*HZ)
359 static int is_duplicate_packet(struct rtllib_device *ieee,
360 struct rtllib_hdr_4addr *header)
362 u16 fc = le16_to_cpu(header->frame_ctl);
363 u16 sc = le16_to_cpu(header->seq_ctl);
364 u16 seq = WLAN_GET_SEQ_SEQ(sc);
365 u16 frag = WLAN_GET_SEQ_FRAG(sc);
366 u16 *last_seq, *last_frag;
367 unsigned long *last_time;
368 struct rtllib_hdr_3addrqos *hdr_3addrqos;
369 struct rtllib_hdr_4addrqos *hdr_4addrqos;
372 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
373 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)header;
374 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
377 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
378 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)header;
379 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
386 switch (ieee->iw_mode) {
390 struct ieee_ibss_seq *entry = NULL;
391 u8 *mac = header->addr2;
392 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
393 list_for_each(p, &ieee->ibss_mac_hash[index]) {
394 entry = list_entry(p, struct ieee_ibss_seq, list);
395 if (!memcmp(entry->mac, mac, ETH_ALEN))
398 if (p == &ieee->ibss_mac_hash[index]) {
399 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
401 printk(KERN_WARNING "Cannot malloc new mac entry\n");
404 memcpy(entry->mac, mac, ETH_ALEN);
405 entry->seq_num[tid] = seq;
406 entry->frag_num[tid] = frag;
407 entry->packet_time[tid] = jiffies;
408 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
411 last_seq = &entry->seq_num[tid];
412 last_frag = &entry->frag_num[tid];
413 last_time = &entry->packet_time[tid];
418 last_seq = &ieee->last_rxseq_num[tid];
419 last_frag = &ieee->last_rxfrag_num[tid];
420 last_time = &ieee->last_packet_time[tid];
426 if ((*last_seq == seq) &&
427 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
428 if (*last_frag == frag)
430 if (*last_frag + 1 != frag)
431 /* out-of-order fragment */
437 *last_time = jiffies;
445 static bool AddReorderEntry(struct rx_ts_record *pTS,
446 struct rx_reorder_entry *pReorderEntry)
448 struct list_head *pList = &pTS->RxPendingPktList;
450 while (pList->next != &pTS->RxPendingPktList) {
451 if (SN_LESS(pReorderEntry->SeqNum, ((struct rx_reorder_entry *)
452 list_entry(pList->next, struct rx_reorder_entry,
455 else if (SN_EQUAL(pReorderEntry->SeqNum,
456 ((struct rx_reorder_entry *)list_entry(pList->next,
457 struct rx_reorder_entry, List))->SeqNum))
462 pReorderEntry->List.next = pList->next;
463 pReorderEntry->List.next->prev = &pReorderEntry->List;
464 pReorderEntry->List.prev = pList;
465 pList->next = &pReorderEntry->List;
470 void rtllib_indicate_packets(struct rtllib_device *ieee, struct rtllib_rxb **prxbIndicateArray, u8 index)
472 struct net_device_stats *stats = &ieee->stats;
475 for (j = 0; j < index; j++) {
476 struct rtllib_rxb *prxb = prxbIndicateArray[j];
477 for (i = 0; i < prxb->nr_subframes; i++) {
478 struct sk_buff *sub_skb = prxb->subframes[i];
480 /* convert hdr + possible LLC headers into Ethernet header */
481 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
482 if (sub_skb->len >= 8 &&
483 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
484 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
485 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
486 /* remove RFC1042 or Bridge-Tunnel encapsulation
487 * and replace EtherType */
488 skb_pull(sub_skb, SNAP_SIZE);
489 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
490 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
493 /* Leave Ethernet header part of hdr and full payload */
494 len = htons(sub_skb->len);
495 memcpy(skb_push(sub_skb, 2), &len, 2);
496 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
497 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
500 /* Indicat the packets to upper layer */
503 stats->rx_bytes += sub_skb->len;
505 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
506 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
507 sub_skb->dev = ieee->dev;
508 sub_skb->dev->stats.rx_packets++;
509 sub_skb->dev->stats.rx_bytes += sub_skb->len;
510 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
511 ieee->last_rx_ps_time = jiffies;
520 void rtllib_FlushRxTsPendingPkts(struct rtllib_device *ieee, struct rx_ts_record *pTS)
522 struct rx_reorder_entry *pRxReorderEntry;
525 del_timer_sync(&pTS->RxPktPendingTimer);
526 while (!list_empty(&pTS->RxPendingPktList)) {
527 if (RfdCnt >= REORDER_WIN_SIZE) {
528 printk(KERN_INFO "-------------->%s() error! RfdCnt >= REORDER_WIN_SIZE\n", __func__);
532 pRxReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev, struct rx_reorder_entry, List);
533 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum %d!\n", __func__, pRxReorderEntry->SeqNum);
534 list_del_init(&pRxReorderEntry->List);
536 ieee->RfdArray[RfdCnt] = pRxReorderEntry->prxb;
539 list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
541 rtllib_indicate_packets(ieee, ieee->RfdArray, RfdCnt);
543 pTS->RxIndicateSeq = 0xffff;
546 static void RxReorderIndicatePacket(struct rtllib_device *ieee,
547 struct rtllib_rxb *prxb,
548 struct rx_ts_record *pTS, u16 SeqNum)
550 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
551 struct rx_reorder_entry *pReorderEntry = NULL;
552 u8 WinSize = pHTInfo->RxReorderWinSize;
555 bool bMatchWinStart = false, bPktInBuf = false;
558 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Seq is %d, pTS->RxIndicateSeq"
559 " is %d, WinSize is %d\n", __func__, SeqNum,
560 pTS->RxIndicateSeq, WinSize);
562 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
564 WinEnd = (pTS->RxIndicateSeq + WinSize - 1) % 4096;
565 /* Rx Reorder initialize condition.*/
566 if (pTS->RxIndicateSeq == 0xffff)
567 pTS->RxIndicateSeq = SeqNum;
569 /* Drop out the packet which SeqNum is smaller than WinStart */
570 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
571 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
572 pTS->RxIndicateSeq, SeqNum);
573 pHTInfo->RxReorderDropCounter++;
576 for (i = 0; i < prxb->nr_subframes; i++)
577 dev_kfree_skb(prxb->subframes[i]);
581 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
586 * Sliding window manipulation. Conditions includes:
587 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
588 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
590 if (SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
591 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
592 bMatchWinStart = true;
593 } else if (SN_LESS(WinEnd, SeqNum)) {
594 if (SeqNum >= (WinSize - 1))
595 pTS->RxIndicateSeq = SeqNum + 1 - WinSize;
597 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum + 1)) + 1;
598 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Window Shift! IndicateSeq: %d,"
599 " NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum);
603 * Indication process.
604 * After Packet dropping and Sliding Window shifting as above, we can
605 * now just indicate the packets with the SeqNum smaller than latest
606 * WinStart and struct buffer other packets.
608 /* For Rx Reorder condition:
609 * 1. All packets with SeqNum smaller than WinStart => Indicate
610 * 2. All packets with SeqNum larger than or equal to
611 * WinStart => Buffer it.
613 if (bMatchWinStart) {
614 /* Current packet is going to be indicated.*/
615 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! "
616 "IndicateSeq: %d, NewSeq: %d\n",
617 pTS->RxIndicateSeq, SeqNum);
618 ieee->prxbIndicateArray[0] = prxb;
621 /* Current packet is going to be inserted into pending list.*/
622 if (!list_empty(&ieee->RxReorder_Unused_List)) {
623 pReorderEntry = (struct rx_reorder_entry *)
624 list_entry(ieee->RxReorder_Unused_List.next,
625 struct rx_reorder_entry, List);
626 list_del_init(&pReorderEntry->List);
628 /* Make a reorder entry and insert into a the packet list.*/
629 pReorderEntry->SeqNum = SeqNum;
630 pReorderEntry->prxb = prxb;
632 if (!AddReorderEntry(pTS, pReorderEntry)) {
633 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
634 "%s(): Duplicate packet is "
635 "dropped!! IndicateSeq: %d, "
637 __func__, pTS->RxIndicateSeq,
639 list_add_tail(&pReorderEntry->List,
640 &ieee->RxReorder_Unused_List); {
642 for (i = 0; i < prxb->nr_subframes; i++)
643 dev_kfree_skb(prxb->subframes[i]);
648 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
649 "Pkt insert into struct buffer!! "
650 "IndicateSeq: %d, NewSeq: %d\n",
651 pTS->RxIndicateSeq, SeqNum);
655 * Packets are dropped if there are not enough reorder
656 * entries. This part should be modified!! We can just
657 * indicate all the packets in struct buffer and get
660 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
661 " There is no reorder entry!! Packet is "
665 for (i = 0; i < prxb->nr_subframes; i++)
666 dev_kfree_skb(prxb->subframes[i]);
673 /* Check if there is any packet need indicate.*/
674 while (!list_empty(&pTS->RxPendingPktList)) {
675 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): start RREORDER indicate\n", __func__);
677 pReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev,
678 struct rx_reorder_entry, List);
679 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
680 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) {
681 /* This protect struct buffer from overflow. */
682 if (index >= REORDER_WIN_SIZE) {
683 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicate"
684 "Packet(): Buffer overflow!!\n");
689 list_del_init(&pReorderEntry->List);
691 if (SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
692 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
694 ieee->prxbIndicateArray[index] = pReorderEntry->prxb;
695 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum"
696 " %d!\n", __func__, pReorderEntry->SeqNum);
699 list_add_tail(&pReorderEntry->List,
700 &ieee->RxReorder_Unused_List);
707 /* Handling pending timer. Set this timer to prevent from long time
710 if (timer_pending(&pTS->RxPktPendingTimer))
711 del_timer_sync(&pTS->RxPktPendingTimer);
712 pTS->RxTimeoutIndicateSeq = 0xffff;
714 if (index > REORDER_WIN_SIZE) {
715 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
716 " Rx Reorer struct buffer full!!\n");
717 spin_unlock_irqrestore(&(ieee->reorder_spinlock),
721 rtllib_indicate_packets(ieee, ieee->prxbIndicateArray, index);
725 if (bPktInBuf && pTS->RxTimeoutIndicateSeq == 0xffff) {
726 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): SET rx timeout timer\n",
728 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
729 mod_timer(&pTS->RxPktPendingTimer, jiffies +
730 MSECS(pHTInfo->RxReorderPendingTime));
732 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
735 static u8 parse_subframe(struct rtllib_device *ieee, struct sk_buff *skb,
736 struct rtllib_rx_stats *rx_stats,
737 struct rtllib_rxb *rxb, u8 *src, u8 *dst)
739 struct rtllib_hdr_3addr *hdr = (struct rtllib_hdr_3addr *)skb->data;
740 u16 fc = le16_to_cpu(hdr->frame_ctl);
742 u16 LLCOffset = sizeof(struct rtllib_hdr_3addr);
744 bool bIsAggregateFrame = false;
745 u16 nSubframe_Length;
746 u8 nPadding_Length = 0;
748 struct sk_buff *sub_skb;
750 /* just for debug purpose */
751 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
752 if ((RTLLIB_QOS_HAS_SEQ(fc)) &&
753 (((union frameqos *)(skb->data + RTLLIB_3ADDR_LEN))->field.reserved))
754 bIsAggregateFrame = true;
756 if (RTLLIB_QOS_HAS_SEQ(fc))
758 if (rx_stats->bContainHTC)
759 LLCOffset += sHTCLng;
761 ChkLength = LLCOffset;
763 if (skb->len <= ChkLength)
766 skb_pull(skb, LLCOffset);
767 ieee->bIsAggregateFrame = bIsAggregateFrame;
768 if (!bIsAggregateFrame) {
769 rxb->nr_subframes = 1;
771 /* altered by clark 3/30/2010
772 * The struct buffer size of the skb indicated to upper layer
773 * must be less than 5000, or the defraged IP datagram
774 * in the IP layer will exceed "ipfrag_high_tresh" and be
775 * discarded. so there must not use the function
776 * "skb_copy" and "skb_clone" for "skb".
779 /* Allocate new skb for releasing to upper layer */
780 sub_skb = dev_alloc_skb(RTLLIB_SKBBUFFER_SIZE);
781 skb_reserve(sub_skb, 12);
782 data_ptr = (u8 *)skb_put(sub_skb, skb->len);
783 memcpy(data_ptr, skb->data, skb->len);
784 sub_skb->dev = ieee->dev;
786 rxb->subframes[0] = sub_skb;
788 memcpy(rxb->src, src, ETH_ALEN);
789 memcpy(rxb->dst, dst, ETH_ALEN);
790 rxb->subframes[0]->dev = ieee->dev;
793 rxb->nr_subframes = 0;
794 memcpy(rxb->src, src, ETH_ALEN);
795 memcpy(rxb->dst, dst, ETH_ALEN);
796 while (skb->len > ETHERNET_HEADER_SIZE) {
797 /* Offset 12 denote 2 mac address */
798 nSubframe_Length = *((u16 *)(skb->data + 12));
799 nSubframe_Length = (nSubframe_Length >> 8) +
800 (nSubframe_Length << 8);
802 if (skb->len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
803 printk(KERN_INFO "%s: A-MSDU parse error!! "
804 "pRfd->nTotalSubframe : %d\n",\
805 __func__, rxb->nr_subframes);
806 printk(KERN_INFO "%s: A-MSDU parse error!! "
807 "Subframe Length: %d\n", __func__,
809 printk(KERN_INFO "nRemain_Length is %d and "
810 "nSubframe_Length is : %d\n", skb->len,
812 printk(KERN_INFO "The Packet SeqNum is %d\n", SeqNum);
816 /* move the data point to data content */
817 skb_pull(skb, ETHERNET_HEADER_SIZE);
819 /* altered by clark 3/30/2010
820 * The struct buffer size of the skb indicated to upper layer
821 * must be less than 5000, or the defraged IP datagram
822 * in the IP layer will exceed "ipfrag_high_tresh" and be
823 * discarded. so there must not use the function
824 * "skb_copy" and "skb_clone" for "skb".
827 /* Allocate new skb for releasing to upper layer */
828 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
829 skb_reserve(sub_skb, 12);
830 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
831 memcpy(data_ptr, skb->data, nSubframe_Length);
833 sub_skb->dev = ieee->dev;
834 rxb->subframes[rxb->nr_subframes++] = sub_skb;
835 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
836 RTLLIB_DEBUG_RX("ParseSubframe(): Too many "
837 "Subframes! Packets dropped!\n");
840 skb_pull(skb, nSubframe_Length);
843 nPadding_Length = 4 - ((nSubframe_Length +
844 ETHERNET_HEADER_SIZE) % 4);
845 if (nPadding_Length == 4)
848 if (skb->len < nPadding_Length)
851 skb_pull(skb, nPadding_Length);
855 return rxb->nr_subframes;
860 static size_t rtllib_rx_get_hdrlen(struct rtllib_device *ieee,
862 struct rtllib_rx_stats *rx_stats)
864 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
865 u16 fc = le16_to_cpu(hdr->frame_ctl);
868 hdrlen = rtllib_get_hdrlen(fc);
869 if (HTCCheck(ieee, skb->data)) {
871 printk(KERN_INFO "%s: find HTCControl!\n", __func__);
873 rx_stats->bContainHTC = 1;
876 if (RTLLIB_QOS_HAS_SEQ(fc))
877 rx_stats->bIsQosData = 1;
882 static int rtllib_rx_check_duplicate(struct rtllib_device *ieee,
883 struct sk_buff *skb, u8 multicast)
885 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
887 u8 frag, type, stype;
889 fc = le16_to_cpu(hdr->frame_ctl);
890 type = WLAN_FC_GET_TYPE(fc);
891 stype = WLAN_FC_GET_STYPE(fc);
892 sc = le16_to_cpu(hdr->seq_ctl);
893 frag = WLAN_GET_SEQ_FRAG(sc);
895 if ((ieee->pHTInfo->bCurRxReorderEnable == false) ||
896 !ieee->current_network.qos_data.active ||
897 !IsDataFrame(skb->data) ||
898 IsLegacyDataFrame(skb->data)) {
899 if (!((type == RTLLIB_FTYPE_MGMT) && (stype == RTLLIB_STYPE_BEACON))) {
900 if (is_duplicate_packet(ieee, hdr))
904 struct rx_ts_record *pRxTS = NULL;
905 if (GetTs(ieee, (struct ts_common_info **) &pRxTS, hdr->addr2,
906 (u8)Frame_QoSTID((u8 *)(skb->data)), RX_DIR, true)) {
907 if ((fc & (1<<11)) && (frag == pRxTS->RxLastFragNum) &&
908 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
911 pRxTS->RxLastFragNum = frag;
912 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
915 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip"
916 " the check!!\n", __func__);
924 static void rtllib_rx_extract_addr(struct rtllib_device *ieee,
925 struct rtllib_hdr_4addr *hdr, u8 *dst,
928 u16 fc = le16_to_cpu(hdr->frame_ctl);
930 switch (fc & (RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS)) {
931 case RTLLIB_FCTL_FROMDS:
932 memcpy(dst, hdr->addr1, ETH_ALEN);
933 memcpy(src, hdr->addr3, ETH_ALEN);
934 memcpy(bssid, hdr->addr2, ETH_ALEN);
936 case RTLLIB_FCTL_TODS:
937 memcpy(dst, hdr->addr3, ETH_ALEN);
938 memcpy(src, hdr->addr2, ETH_ALEN);
939 memcpy(bssid, hdr->addr1, ETH_ALEN);
941 case RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS:
942 memcpy(dst, hdr->addr3, ETH_ALEN);
943 memcpy(src, hdr->addr4, ETH_ALEN);
944 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
947 memcpy(dst, hdr->addr1, ETH_ALEN);
948 memcpy(src, hdr->addr2, ETH_ALEN);
949 memcpy(bssid, hdr->addr3, ETH_ALEN);
954 static int rtllib_rx_data_filter(struct rtllib_device *ieee, u16 fc,
955 u8 *dst, u8 *src, u8 *bssid, u8 *addr2)
957 u8 zero_addr[ETH_ALEN] = {0};
960 type = WLAN_FC_GET_TYPE(fc);
961 stype = WLAN_FC_GET_STYPE(fc);
963 /* Filter frames from different BSS */
964 if (((fc & RTLLIB_FCTL_DSTODS) != RTLLIB_FCTL_DSTODS)
965 && (compare_ether_addr(ieee->current_network.bssid, bssid) != 0)
966 && memcmp(ieee->current_network.bssid, zero_addr, ETH_ALEN)) {
970 /* Filter packets sent by an STA that will be forwarded by AP */
971 if (ieee->IntelPromiscuousModeInfo.bPromiscuousOn &&
972 ieee->IntelPromiscuousModeInfo.bFilterSourceStationFrame) {
973 if ((fc & RTLLIB_FCTL_TODS) && !(fc & RTLLIB_FCTL_FROMDS) &&
974 (compare_ether_addr(dst, ieee->current_network.bssid) != 0) &&
975 (compare_ether_addr(bssid, ieee->current_network.bssid) == 0)) {
980 /* Nullfunc frames may have PS-bit set, so they must be passed to
981 * hostap_handle_sta_rx() before being dropped here. */
982 if (!ieee->IntelPromiscuousModeInfo.bPromiscuousOn) {
983 if (stype != RTLLIB_STYPE_DATA &&
984 stype != RTLLIB_STYPE_DATA_CFACK &&
985 stype != RTLLIB_STYPE_DATA_CFPOLL &&
986 stype != RTLLIB_STYPE_DATA_CFACKPOLL &&
987 stype != RTLLIB_STYPE_QOS_DATA) {
988 if (stype != RTLLIB_STYPE_NULLFUNC)
990 "RX: dropped data frame "
991 "with no data (type=0x%02x, "
998 if (ieee->iw_mode != IW_MODE_MESH) {
999 /* packets from our adapter are dropped (echo) */
1000 if (!memcmp(src, ieee->dev->dev_addr, ETH_ALEN))
1003 /* {broad,multi}cast packets to our BSS go through */
1004 if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst)) {
1005 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1012 static int rtllib_rx_get_crypt(struct rtllib_device *ieee, struct sk_buff *skb,
1013 struct rtllib_crypt_data **crypt, size_t hdrlen)
1015 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1016 u16 fc = le16_to_cpu(hdr->frame_ctl);
1019 if (ieee->host_decrypt) {
1020 if (skb->len >= hdrlen + 3)
1021 idx = skb->data[hdrlen + 3] >> 6;
1023 *crypt = ieee->crypt[idx];
1024 /* allow NULL decrypt to indicate an station specific override
1025 * for default encryption */
1026 if (*crypt && ((*crypt)->ops == NULL ||
1027 (*crypt)->ops->decrypt_mpdu == NULL))
1030 if (!*crypt && (fc & RTLLIB_FCTL_WEP)) {
1031 /* This seems to be triggered by some (multicast?)
1032 * frames from other than current BSS, so just drop the
1033 * frames silently instead of filling system log with
1035 RTLLIB_DEBUG_DROP("Decryption failed (not set)"
1038 ieee->ieee_stats.rx_discards_undecryptable++;
1046 static int rtllib_rx_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
1047 struct rtllib_rx_stats *rx_stats,
1048 struct rtllib_crypt_data *crypt, size_t hdrlen)
1050 struct rtllib_hdr_4addr *hdr;
1055 hdr = (struct rtllib_hdr_4addr *)skb->data;
1056 fc = le16_to_cpu(hdr->frame_ctl);
1057 sc = le16_to_cpu(hdr->seq_ctl);
1058 frag = WLAN_GET_SEQ_FRAG(sc);
1060 if ((!rx_stats->Decrypted))
1061 ieee->need_sw_enc = 1;
1063 ieee->need_sw_enc = 0;
1065 keyidx = rtllib_rx_frame_decrypt(ieee, skb, crypt);
1066 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) && (keyidx < 0)) {
1067 printk(KERN_INFO "%s: decrypt frame error\n", __func__);
1071 hdr = (struct rtllib_hdr_4addr *) skb->data;
1072 if ((frag != 0 || (fc & RTLLIB_FCTL_MOREFRAGS))) {
1074 struct sk_buff *frag_skb = rtllib_frag_cache_get(ieee, hdr);
1075 RTLLIB_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1078 RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
1079 "Rx cannot get skb from fragment "
1080 "cache (morefrag=%d seq=%u frag=%u)\n",
1081 (fc & RTLLIB_FCTL_MOREFRAGS) != 0,
1082 WLAN_GET_SEQ_SEQ(sc), frag);
1089 if (frag_skb->tail + flen > frag_skb->end) {
1090 printk(KERN_WARNING "%s: host decrypted and "
1091 "reassembled frame did not fit skb\n",
1093 rtllib_frag_cache_invalidate(ieee, hdr);
1098 /* copy first fragment (including full headers) into
1099 * beginning of the fragment cache skb */
1100 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1102 /* append frame payload to the end of the fragment
1104 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1107 dev_kfree_skb_any(skb);
1110 if (fc & RTLLIB_FCTL_MOREFRAGS) {
1111 /* more fragments expected - leave the skb in fragment
1112 * cache for now; it will be delivered to upper layers
1113 * after all fragments have been received */
1117 /* this was the last fragment and the frame will be
1118 * delivered, so remove skb from fragment cache */
1120 hdr = (struct rtllib_hdr_4addr *) skb->data;
1121 rtllib_frag_cache_invalidate(ieee, hdr);
1124 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1125 * encrypted/authenticated */
1126 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
1127 rtllib_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) {
1128 printk(KERN_INFO "%s: ==>decrypt msdu error\n", __func__);
1132 hdr = (struct rtllib_hdr_4addr *) skb->data;
1133 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep) {
1134 if (/*ieee->ieee802_1x &&*/
1135 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1137 /* pass unencrypted EAPOL frames even if encryption is
1139 struct eapol *eap = (struct eapol *)(skb->data +
1141 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1142 eap_get_type(eap->type));
1145 "encryption configured, but RX "
1146 "frame not encrypted (SA= %pM)\n",
1152 if (crypt && !(fc & RTLLIB_FCTL_WEP) &&
1153 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1154 struct eapol *eap = (struct eapol *)(skb->data +
1156 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1157 eap_get_type(eap->type));
1160 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
1161 !rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1163 "dropped unencrypted RX data "
1165 " (drop_unencrypted=1)\n",
1170 if (rtllib_is_eapol_frame(ieee, skb, hdrlen))
1171 printk(KERN_WARNING "RX: IEEE802.1X EAPOL frame!\n");
1176 static void rtllib_rx_check_leave_lps(struct rtllib_device *ieee, u8 unicast, u8 nr_subframes)
1180 if ((ieee->state == RTLLIB_LINKED)) {
1181 if (((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +
1182 ieee->LinkDetectInfo.NumTxOkInPeriod) > 8) ||
1183 (ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2)) {
1184 if (ieee->LeisurePSLeave)
1185 ieee->LeisurePSLeave(ieee->dev);
1189 ieee->last_rx_ps_time = jiffies;
1192 static void rtllib_rx_indicate_pkt_legacy(struct rtllib_device *ieee,
1193 struct rtllib_rx_stats *rx_stats,
1194 struct rtllib_rxb *rxb,
1198 struct net_device *dev = ieee->dev;
1203 printk(KERN_INFO "%s: rxb is NULL!!\n", __func__);
1207 for (i = 0; i < rxb->nr_subframes; i++) {
1208 struct sk_buff *sub_skb = rxb->subframes[i];
1211 /* convert hdr + possible LLC headers into Ethernet header */
1212 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1213 if (sub_skb->len >= 8 &&
1214 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1215 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1216 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1217 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1218 * replace EtherType */
1219 skb_pull(sub_skb, SNAP_SIZE);
1220 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1221 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1224 /* Leave Ethernet header part of hdr and full payload */
1225 len = htons(sub_skb->len);
1226 memcpy(skb_push(sub_skb, 2), &len, 2);
1227 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1228 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1231 ieee->stats.rx_packets++;
1232 ieee->stats.rx_bytes += sub_skb->len;
1234 if (is_multicast_ether_addr(dst))
1235 ieee->stats.multicast++;
1237 /* Indicat the packets to upper layer */
1238 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1239 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1241 sub_skb->dev->stats.rx_packets++;
1242 sub_skb->dev->stats.rx_bytes += sub_skb->len;
1243 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1251 static int rtllib_rx_InfraAdhoc(struct rtllib_device *ieee, struct sk_buff *skb,
1252 struct rtllib_rx_stats *rx_stats)
1254 struct net_device *dev = ieee->dev;
1255 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1256 struct rtllib_crypt_data *crypt = NULL;
1257 struct rtllib_rxb *rxb = NULL;
1258 struct rx_ts_record *pTS = NULL;
1259 u16 fc, sc, SeqNum = 0;
1260 u8 type, stype, multicast = 0, unicast = 0, nr_subframes = 0, TID = 0;
1261 u8 dst[ETH_ALEN], src[ETH_ALEN], bssid[ETH_ALEN] = {0}, *payload;
1263 bool bToOtherSTA = false;
1266 hdr = (struct rtllib_hdr_4addr *)skb->data;
1267 fc = le16_to_cpu(hdr->frame_ctl);
1268 type = WLAN_FC_GET_TYPE(fc);
1269 stype = WLAN_FC_GET_STYPE(fc);
1270 sc = le16_to_cpu(hdr->seq_ctl);
1272 /*Filter pkt not to me*/
1273 multicast = is_multicast_ether_addr(hdr->addr1)|is_broadcast_ether_addr(hdr->addr1);
1274 unicast = !multicast;
1275 if (unicast && (compare_ether_addr(dev->dev_addr, hdr->addr1) != 0)) {
1276 if (ieee->bNetPromiscuousMode)
1282 /*Filter pkt has too small length */
1283 hdrlen = rtllib_rx_get_hdrlen(ieee, skb, rx_stats);
1284 if (skb->len < hdrlen) {
1285 printk(KERN_INFO "%s():ERR!!! skb->len is smaller than hdrlen\n", __func__);
1289 /* Filter Duplicate pkt */
1290 ret = rtllib_rx_check_duplicate(ieee, skb, multicast);
1294 /* Filter CTRL Frame */
1295 if (type == RTLLIB_FTYPE_CTL)
1298 /* Filter MGNT Frame */
1299 if (type == RTLLIB_FTYPE_MGMT) {
1302 if (rtllib_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1308 /* Filter WAPI DATA Frame */
1310 /* Update statstics for AP roaming */
1312 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1313 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1315 dev->last_rx = jiffies;
1317 /* Data frame - extract src/dst addresses */
1318 rtllib_rx_extract_addr(ieee, hdr, dst, src, bssid);
1320 /* Filter Data frames */
1321 ret = rtllib_rx_data_filter(ieee, fc, dst, src, bssid, hdr->addr2);
1325 if (skb->len == hdrlen)
1328 /* Send pspoll based on moredata */
1329 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == LPS_IS_SLEEP)
1330 && (ieee->polling) && (!bToOtherSTA)) {
1331 if (WLAN_FC_MORE_DATA(fc)) {
1332 /* more data bit is set, let's request a new frame from the AP */
1333 rtllib_sta_ps_send_pspoll_frame(ieee);
1335 ieee->polling = false;
1339 /* Get crypt if encrypted */
1340 ret = rtllib_rx_get_crypt(ieee, skb, &crypt, hdrlen);
1344 /* Decrypt data frame (including reassemble) */
1345 ret = rtllib_rx_decrypt(ieee, skb, rx_stats, crypt, hdrlen);
1351 /* Get TS for Rx Reorder */
1352 hdr = (struct rtllib_hdr_4addr *) skb->data;
1353 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1354 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)
1355 && (!bToOtherSTA)) {
1356 TID = Frame_QoSTID(skb->data);
1357 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1358 GetTs(ieee, (struct ts_common_info **) &pTS, hdr->addr2, TID, RX_DIR, true);
1359 if (TID != 0 && TID != 3)
1360 ieee->bis_any_nonbepkts = true;
1363 /* Parse rx data frame (For AMSDU) */
1364 /* skb: hdr + (possible reassembled) full plaintext payload */
1365 payload = skb->data + hdrlen;
1366 rxb = kmalloc(sizeof(struct rtllib_rxb), GFP_ATOMIC);
1368 RTLLIB_DEBUG(RTLLIB_DL_ERR,
1369 "%s(): kmalloc rxb error\n", __func__);
1372 /* to parse amsdu packets */
1373 /* qos data packets & reserved bit is 1 */
1374 if (parse_subframe(ieee, skb, rx_stats, rxb, src, dst) == 0) {
1375 /* only to free rxb, and not submit the packets to upper layer */
1376 for (i = 0; i < rxb->nr_subframes; i++)
1377 dev_kfree_skb(rxb->subframes[i]);
1383 /* Update WAPI PN */
1385 /* Check if leave LPS */
1387 if (ieee->bIsAggregateFrame)
1388 nr_subframes = rxb->nr_subframes;
1392 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod += nr_subframes;
1393 rtllib_rx_check_leave_lps(ieee, unicast, nr_subframes);
1396 /* Indicate packets to upper layer or Rx Reorder */
1397 if (ieee->pHTInfo->bCurRxReorderEnable == false || pTS == NULL || bToOtherSTA)
1398 rtllib_rx_indicate_pkt_legacy(ieee, rx_stats, rxb, dst, src);
1400 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1412 ieee->stats.rx_dropped++;
1414 /* Returning 0 indicates to caller that we have not handled the SKB--
1415 * so it is still allocated and can be used again by underlying
1416 * hardware as a DMA target */
1420 static int rtllib_rx_Master(struct rtllib_device *ieee, struct sk_buff *skb,
1421 struct rtllib_rx_stats *rx_stats)
1426 static int rtllib_rx_Monitor(struct rtllib_device *ieee, struct sk_buff *skb,
1427 struct rtllib_rx_stats *rx_stats)
1429 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1430 u16 fc = le16_to_cpu(hdr->frame_ctl);
1431 size_t hdrlen = rtllib_get_hdrlen(fc);
1433 if (skb->len < hdrlen) {
1434 printk(KERN_INFO "%s():ERR!!! skb->len is smaller than hdrlen\n", __func__);
1438 if (HTCCheck(ieee, skb->data)) {
1439 if (net_ratelimit())
1440 printk(KERN_INFO "%s: Find HTCControl!\n", __func__);
1444 rtllib_monitor_rx(ieee, skb, rx_stats, hdrlen);
1445 ieee->stats.rx_packets++;
1446 ieee->stats.rx_bytes += skb->len;
1451 static int rtllib_rx_Mesh(struct rtllib_device *ieee, struct sk_buff *skb,
1452 struct rtllib_rx_stats *rx_stats)
1457 /* All received frames are sent to this function. @skb contains the frame in
1458 * IEEE 802.11 format, i.e., in the format it was sent over air.
1459 * This function is called only as a tasklet (software IRQ). */
1460 int rtllib_rx(struct rtllib_device *ieee, struct sk_buff *skb,
1461 struct rtllib_rx_stats *rx_stats)
1465 if ((NULL == ieee) || (NULL == skb) || (NULL == rx_stats)) {
1466 printk(KERN_INFO "%s: Input parameters NULL!\n", __func__);
1469 if (skb->len < 10) {
1470 printk(KERN_INFO "%s: SKB length < 10\n", __func__);
1474 switch (ieee->iw_mode) {
1477 ret = rtllib_rx_InfraAdhoc(ieee, skb, rx_stats);
1479 case IW_MODE_MASTER:
1480 case IW_MODE_REPEAT:
1481 ret = rtllib_rx_Master(ieee, skb, rx_stats);
1483 case IW_MODE_MONITOR:
1484 ret = rtllib_rx_Monitor(ieee, skb, rx_stats);
1487 ret = rtllib_rx_Mesh(ieee, skb, rx_stats);
1490 printk(KERN_INFO"%s: ERR iw mode!!!\n", __func__);
1497 ieee->stats.rx_dropped++;
1500 EXPORT_SYMBOL(rtllib_rx);
1502 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1505 * Make ther structure we read from the beacon packet has
1508 static int rtllib_verify_qos_info(struct rtllib_qos_information_element
1509 *info_element, int sub_type)
1512 if (info_element->qui_subtype != sub_type)
1514 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1516 if (info_element->qui_type != QOS_OUI_TYPE)
1518 if (info_element->version != QOS_VERSION_1)
1526 * Parse a QoS parameter element
1528 static int rtllib_read_qos_param_element(struct rtllib_qos_parameter_info
1529 *element_param, struct rtllib_info_element
1533 u16 size = sizeof(struct rtllib_qos_parameter_info) - 2;
1535 if ((info_element == NULL) || (element_param == NULL))
1538 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1539 memcpy(element_param->info_element.qui, info_element->data,
1541 element_param->info_element.elementID = info_element->id;
1542 element_param->info_element.length = info_element->len;
1546 ret = rtllib_verify_qos_info(&element_param->info_element,
1547 QOS_OUI_PARAM_SUB_TYPE);
1552 * Parse a QoS information element
1554 static int rtllib_read_qos_info_element(struct
1555 rtllib_qos_information_element
1556 *element_info, struct rtllib_info_element
1560 u16 size = sizeof(struct rtllib_qos_information_element) - 2;
1562 if (element_info == NULL)
1564 if (info_element == NULL)
1567 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1568 memcpy(element_info->qui, info_element->data,
1570 element_info->elementID = info_element->id;
1571 element_info->length = info_element->len;
1576 ret = rtllib_verify_qos_info(element_info,
1577 QOS_OUI_INFO_SUB_TYPE);
1583 * Write QoS parameters from the ac parameters.
1585 static int rtllib_qos_convert_ac_to_parameters(struct rtllib_qos_parameter_info *param_elm,
1586 struct rtllib_qos_data *qos_data)
1588 struct rtllib_qos_ac_parameter *ac_params;
1589 struct rtllib_qos_parameters *qos_param = &(qos_data->parameters);
1595 qos_data->wmm_acm = 0;
1596 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1597 ac_params = &(param_elm->ac_params_record[i]);
1599 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1600 acm = (ac_params->aci_aifsn & 0x10) >> 4;
1602 if (aci >= QOS_QUEUE_NUM)
1606 /* BIT(0) | BIT(3) */
1608 qos_data->wmm_acm |= (0x01<<0)|(0x01<<3);
1611 /* BIT(4) | BIT(5) */
1613 qos_data->wmm_acm |= (0x01<<4)|(0x01<<5);
1616 /* BIT(6) | BIT(7) */
1618 qos_data->wmm_acm |= (0x01<<6)|(0x01<<7);
1622 /* BIT(1) | BIT(2) */
1624 qos_data->wmm_acm |= (0x01<<1)|(0x01<<2);
1628 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1630 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1631 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2 : qos_param->aifs[aci];
1633 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1635 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1637 qos_param->flag[aci] =
1638 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1639 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1645 * we have a generic data element which it may contain QoS information or
1646 * parameters element. check the information element length to decide
1647 * which type to read
1649 static int rtllib_parse_qos_info_param_IE(struct rtllib_info_element
1651 struct rtllib_network *network)
1654 struct rtllib_qos_information_element qos_info_element;
1656 rc = rtllib_read_qos_info_element(&qos_info_element, info_element);
1659 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1660 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1662 struct rtllib_qos_parameter_info param_element;
1664 rc = rtllib_read_qos_param_element(¶m_element,
1667 rtllib_qos_convert_ac_to_parameters(¶m_element,
1668 &(network->qos_data));
1669 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1670 network->qos_data.param_count =
1671 param_element.info_element.ac_info & 0x0F;
1676 RTLLIB_DEBUG_QOS("QoS is supported\n");
1677 network->qos_data.supported = 1;
1682 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1684 static const char *get_info_element_string(u16 id)
1689 MFIE_STRING(FH_SET);
1690 MFIE_STRING(DS_SET);
1691 MFIE_STRING(CF_SET);
1693 MFIE_STRING(IBSS_SET);
1694 MFIE_STRING(COUNTRY);
1695 MFIE_STRING(HOP_PARAMS);
1696 MFIE_STRING(HOP_TABLE);
1697 MFIE_STRING(REQUEST);
1698 MFIE_STRING(CHALLENGE);
1699 MFIE_STRING(POWER_CONSTRAINT);
1700 MFIE_STRING(POWER_CAPABILITY);
1701 MFIE_STRING(TPC_REQUEST);
1702 MFIE_STRING(TPC_REPORT);
1703 MFIE_STRING(SUPP_CHANNELS);
1705 MFIE_STRING(MEASURE_REQUEST);
1706 MFIE_STRING(MEASURE_REPORT);
1708 MFIE_STRING(IBSS_DFS);
1710 MFIE_STRING(RATES_EX);
1711 MFIE_STRING(GENERIC);
1712 MFIE_STRING(QOS_PARAMETER);
1718 static inline void rtllib_extract_country_ie(
1719 struct rtllib_device *ieee,
1720 struct rtllib_info_element *info_element,
1721 struct rtllib_network *network,
1724 if (IS_DOT11D_ENABLE(ieee)) {
1725 if (info_element->len != 0) {
1726 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1727 network->CountryIeLen = info_element->len;
1729 if (!IS_COUNTRY_IE_VALID(ieee)) {
1730 if ((rtllib_act_scanning(ieee, false) == true) && (ieee->FirstIe_InScan == 1))
1731 printk(KERN_INFO "Received beacon ContryIE, SSID: <%s>\n", network->ssid);
1732 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1736 if (IS_EQUAL_CIE_SRC(ieee, addr2))
1737 UPDATE_CIE_WATCHDOG(ieee);
1742 int rtllib_parse_info_param(struct rtllib_device *ieee,
1743 struct rtllib_info_element *info_element,
1745 struct rtllib_network *network,
1746 struct rtllib_rx_stats *stats)
1750 u16 tmp_htcap_len = 0;
1751 u16 tmp_htinfo_len = 0;
1752 u16 ht_realtek_agg_len = 0;
1753 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1757 while (length >= sizeof(*info_element)) {
1758 if (sizeof(*info_element) + info_element->len > length) {
1759 RTLLIB_DEBUG_MGMT("Info elem: parse failed: "
1760 "info_element->len + 2 > left : "
1761 "info_element->len+2=%zd left=%d, id=%d.\n",
1763 sizeof(*info_element),
1764 length, info_element->id);
1765 /* We stop processing but don't return an error here
1766 * because some misbehaviour APs break this rule. ie.
1767 * Orinoco AP1000. */
1771 switch (info_element->id) {
1772 case MFIE_TYPE_SSID:
1773 if (rtllib_is_empty_essid(info_element->data,
1774 info_element->len)) {
1775 network->flags |= NETWORK_EMPTY_ESSID;
1779 network->ssid_len = min(info_element->len,
1780 (u8) IW_ESSID_MAX_SIZE);
1781 memcpy(network->ssid, info_element->data, network->ssid_len);
1782 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1783 memset(network->ssid + network->ssid_len, 0,
1784 IW_ESSID_MAX_SIZE - network->ssid_len);
1786 RTLLIB_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1787 network->ssid, network->ssid_len);
1790 case MFIE_TYPE_RATES:
1792 network->rates_len = min(info_element->len,
1794 for (i = 0; i < network->rates_len; i++) {
1795 network->rates[i] = info_element->data[i];
1796 p += snprintf(p, sizeof(rates_str) -
1797 (p - rates_str), "%02X ",
1799 if (rtllib_is_ofdm_rate
1800 (info_element->data[i])) {
1801 network->flags |= NETWORK_HAS_OFDM;
1802 if (info_element->data[i] &
1803 RTLLIB_BASIC_RATE_MASK)
1808 if (rtllib_is_cck_rate
1809 (info_element->data[i])) {
1810 network->flags |= NETWORK_HAS_CCK;
1814 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1815 rates_str, network->rates_len);
1818 case MFIE_TYPE_RATES_EX:
1820 network->rates_ex_len = min(info_element->len,
1821 MAX_RATES_EX_LENGTH);
1822 for (i = 0; i < network->rates_ex_len; i++) {
1823 network->rates_ex[i] = info_element->data[i];
1824 p += snprintf(p, sizeof(rates_str) -
1825 (p - rates_str), "%02X ",
1827 if (rtllib_is_ofdm_rate
1828 (info_element->data[i])) {
1829 network->flags |= NETWORK_HAS_OFDM;
1830 if (info_element->data[i] &
1831 RTLLIB_BASIC_RATE_MASK)
1837 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1838 rates_str, network->rates_ex_len);
1841 case MFIE_TYPE_DS_SET:
1842 RTLLIB_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1843 info_element->data[0]);
1844 network->channel = info_element->data[0];
1847 case MFIE_TYPE_FH_SET:
1848 RTLLIB_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1851 case MFIE_TYPE_CF_SET:
1852 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1856 if (info_element->len < 4)
1859 network->tim.tim_count = info_element->data[0];
1860 network->tim.tim_period = info_element->data[1];
1862 network->dtim_period = info_element->data[1];
1863 if (ieee->state != RTLLIB_LINKED)
1865 network->last_dtim_sta_time = jiffies;
1867 network->dtim_data = RTLLIB_DTIM_VALID;
1870 if (info_element->data[2] & 1)
1871 network->dtim_data |= RTLLIB_DTIM_MBCAST;
1873 offset = (info_element->data[2] >> 1)*2;
1876 if (ieee->assoc_id < 8*offset ||
1877 ieee->assoc_id > 8*(offset + info_element->len - 3))
1880 offset = (ieee->assoc_id / 8) - offset;
1881 if (info_element->data[3 + offset] &
1882 (1 << (ieee->assoc_id % 8)))
1883 network->dtim_data |= RTLLIB_DTIM_UCAST;
1885 network->listen_interval = network->dtim_period;
1889 network->erp_value = info_element->data[0];
1890 network->flags |= NETWORK_HAS_ERP_VALUE;
1891 RTLLIB_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1892 network->erp_value);
1894 case MFIE_TYPE_IBSS_SET:
1895 network->atim_window = info_element->data[0];
1896 RTLLIB_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1897 network->atim_window);
1900 case MFIE_TYPE_CHALLENGE:
1901 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1904 case MFIE_TYPE_GENERIC:
1905 RTLLIB_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1907 if (!rtllib_parse_qos_info_param_IE(info_element,
1910 if (info_element->len >= 4 &&
1911 info_element->data[0] == 0x00 &&
1912 info_element->data[1] == 0x50 &&
1913 info_element->data[2] == 0xf2 &&
1914 info_element->data[3] == 0x01) {
1915 network->wpa_ie_len = min(info_element->len + 2,
1917 memcpy(network->wpa_ie, info_element,
1918 network->wpa_ie_len);
1921 if (info_element->len == 7 &&
1922 info_element->data[0] == 0x00 &&
1923 info_element->data[1] == 0xe0 &&
1924 info_element->data[2] == 0x4c &&
1925 info_element->data[3] == 0x01 &&
1926 info_element->data[4] == 0x02)
1927 network->Turbo_Enable = 1;
1929 if (tmp_htcap_len == 0) {
1930 if (info_element->len >= 4 &&
1931 info_element->data[0] == 0x00 &&
1932 info_element->data[1] == 0x90 &&
1933 info_element->data[2] == 0x4c &&
1934 info_element->data[3] == 0x033) {
1936 tmp_htcap_len = min(info_element->len, (u8)MAX_IE_LEN);
1937 if (tmp_htcap_len != 0) {
1938 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1939 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
1940 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
1941 memcpy(network->bssht.bdHTCapBuf, info_element->data, network->bssht.bdHTCapLen);
1944 if (tmp_htcap_len != 0) {
1945 network->bssht.bdSupportHT = true;
1946 network->bssht.bdHT1R = ((((struct ht_capab_ele *)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1948 network->bssht.bdSupportHT = false;
1949 network->bssht.bdHT1R = false;
1954 if (tmp_htinfo_len == 0) {
1955 if (info_element->len >= 4 &&
1956 info_element->data[0] == 0x00 &&
1957 info_element->data[1] == 0x90 &&
1958 info_element->data[2] == 0x4c &&
1959 info_element->data[3] == 0x034) {
1960 tmp_htinfo_len = min(info_element->len, (u8)MAX_IE_LEN);
1961 if (tmp_htinfo_len != 0) {
1962 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1963 if (tmp_htinfo_len) {
1964 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf) ?
1965 sizeof(network->bssht.bdHTInfoBuf) : tmp_htinfo_len;
1966 memcpy(network->bssht.bdHTInfoBuf, info_element->data, network->bssht.bdHTInfoLen);
1974 if (ieee->aggregation) {
1975 if (network->bssht.bdSupportHT) {
1976 if (info_element->len >= 4 &&
1977 info_element->data[0] == 0x00 &&
1978 info_element->data[1] == 0xe0 &&
1979 info_element->data[2] == 0x4c &&
1980 info_element->data[3] == 0x02) {
1981 ht_realtek_agg_len = min(info_element->len, (u8)MAX_IE_LEN);
1982 memcpy(ht_realtek_agg_buf, info_element->data, info_element->len);
1984 if (ht_realtek_agg_len >= 5) {
1985 network->realtek_cap_exit = true;
1986 network->bssht.bdRT2RTAggregation = true;
1988 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1989 network->bssht.bdRT2RTLongSlotTime = true;
1991 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE))
1992 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE;
1995 if (ht_realtek_agg_len >= 5) {
1996 if ((ht_realtek_agg_buf[5] & RT_HT_CAP_USE_SOFTAP))
1997 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_SOFTAP;
2001 if ((info_element->len >= 3 &&
2002 info_element->data[0] == 0x00 &&
2003 info_element->data[1] == 0x05 &&
2004 info_element->data[2] == 0xb5) ||
2005 (info_element->len >= 3 &&
2006 info_element->data[0] == 0x00 &&
2007 info_element->data[1] == 0x0a &&
2008 info_element->data[2] == 0xf7) ||
2009 (info_element->len >= 3 &&
2010 info_element->data[0] == 0x00 &&
2011 info_element->data[1] == 0x10 &&
2012 info_element->data[2] == 0x18)) {
2013 network->broadcom_cap_exist = true;
2015 if (info_element->len >= 3 &&
2016 info_element->data[0] == 0x00 &&
2017 info_element->data[1] == 0x0c &&
2018 info_element->data[2] == 0x43)
2019 network->ralink_cap_exist = true;
2020 if ((info_element->len >= 3 &&
2021 info_element->data[0] == 0x00 &&
2022 info_element->data[1] == 0x03 &&
2023 info_element->data[2] == 0x7f) ||
2024 (info_element->len >= 3 &&
2025 info_element->data[0] == 0x00 &&
2026 info_element->data[1] == 0x13 &&
2027 info_element->data[2] == 0x74))
2028 network->atheros_cap_exist = true;
2030 if ((info_element->len >= 3 &&
2031 info_element->data[0] == 0x00 &&
2032 info_element->data[1] == 0x50 &&
2033 info_element->data[2] == 0x43))
2034 network->marvell_cap_exist = true;
2035 if (info_element->len >= 3 &&
2036 info_element->data[0] == 0x00 &&
2037 info_element->data[1] == 0x40 &&
2038 info_element->data[2] == 0x96)
2039 network->cisco_cap_exist = true;
2042 if (info_element->len >= 3 &&
2043 info_element->data[0] == 0x00 &&
2044 info_element->data[1] == 0x0a &&
2045 info_element->data[2] == 0xf5)
2046 network->airgo_cap_exist = true;
2048 if (info_element->len > 4 &&
2049 info_element->data[0] == 0x00 &&
2050 info_element->data[1] == 0x40 &&
2051 info_element->data[2] == 0x96 &&
2052 info_element->data[3] == 0x01) {
2053 if (info_element->len == 6) {
2054 memcpy(network->CcxRmState, &info_element[4], 2);
2055 if (network->CcxRmState[0] != 0)
2056 network->bCcxRmEnable = true;
2058 network->bCcxRmEnable = false;
2059 network->MBssidMask = network->CcxRmState[1] & 0x07;
2060 if (network->MBssidMask != 0) {
2061 network->bMBssidValid = true;
2062 network->MBssidMask = 0xff << (network->MBssidMask);
2063 memcpy(network->MBssid, network->bssid, ETH_ALEN);
2064 network->MBssid[5] &= network->MBssidMask;
2066 network->bMBssidValid = false;
2069 network->bCcxRmEnable = false;
2072 if (info_element->len > 4 &&
2073 info_element->data[0] == 0x00 &&
2074 info_element->data[1] == 0x40 &&
2075 info_element->data[2] == 0x96 &&
2076 info_element->data[3] == 0x03) {
2077 if (info_element->len == 5) {
2078 network->bWithCcxVerNum = true;
2079 network->BssCcxVerNumber = info_element->data[4];
2081 network->bWithCcxVerNum = false;
2082 network->BssCcxVerNumber = 0;
2085 if (info_element->len > 4 &&
2086 info_element->data[0] == 0x00 &&
2087 info_element->data[1] == 0x50 &&
2088 info_element->data[2] == 0xf2 &&
2089 info_element->data[3] == 0x04) {
2090 RTLLIB_DEBUG_MGMT("MFIE_TYPE_WZC: %d bytes\n",
2092 network->wzc_ie_len = min(info_element->len+2,
2094 memcpy(network->wzc_ie, info_element,
2095 network->wzc_ie_len);
2100 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2102 network->rsn_ie_len = min(info_element->len + 2,
2104 memcpy(network->rsn_ie, info_element,
2105 network->rsn_ie_len);
2108 case MFIE_TYPE_HT_CAP:
2109 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2111 tmp_htcap_len = min(info_element->len, (u8)MAX_IE_LEN);
2112 if (tmp_htcap_len != 0) {
2113 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2114 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
2115 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
2116 memcpy(network->bssht.bdHTCapBuf,
2118 network->bssht.bdHTCapLen);
2120 network->bssht.bdSupportHT = true;
2121 network->bssht.bdHT1R = ((((struct ht_capab_ele *)
2122 network->bssht.bdHTCapBuf))->MCS[1]) == 0;
2124 network->bssht.bdBandWidth = (enum ht_channel_width)
2125 (((struct ht_capab_ele *)
2126 (network->bssht.bdHTCapBuf))->ChlWidth);
2128 network->bssht.bdSupportHT = false;
2129 network->bssht.bdHT1R = false;
2130 network->bssht.bdBandWidth = HT_CHANNEL_WIDTH_20;
2135 case MFIE_TYPE_HT_INFO:
2136 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2138 tmp_htinfo_len = min(info_element->len, (u8)MAX_IE_LEN);
2139 if (tmp_htinfo_len) {
2140 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2141 network->bssht.bdHTInfoLen = tmp_htinfo_len >
2142 sizeof(network->bssht.bdHTInfoBuf) ?
2143 sizeof(network->bssht.bdHTInfoBuf) :
2145 memcpy(network->bssht.bdHTInfoBuf,
2147 network->bssht.bdHTInfoLen);
2151 case MFIE_TYPE_AIRONET:
2152 RTLLIB_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2154 if (info_element->len > IE_CISCO_FLAG_POSITION) {
2155 network->bWithAironetIE = true;
2157 if ((info_element->data[IE_CISCO_FLAG_POSITION]
2158 & SUPPORT_CKIP_MIC) ||
2159 (info_element->data[IE_CISCO_FLAG_POSITION]
2161 network->bCkipSupported = true;
2163 network->bCkipSupported = false;
2165 network->bWithAironetIE = false;
2166 network->bCkipSupported = false;
2169 case MFIE_TYPE_QOS_PARAMETER:
2171 "QoS Error need to parse QOS_PARAMETER IE\n");
2174 case MFIE_TYPE_COUNTRY:
2175 RTLLIB_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2177 rtllib_extract_country_ie(ieee, info_element, network,
2183 ("Unsupported info element: %s (%d)\n",
2184 get_info_element_string(info_element->id),
2189 length -= sizeof(*info_element) + info_element->len;
2191 (struct rtllib_info_element *)&info_element->
2192 data[info_element->len];
2195 if (!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2196 !network->cisco_cap_exist && !network->ralink_cap_exist &&
2197 !network->bssht.bdRT2RTAggregation)
2198 network->unknown_cap_exist = true;
2200 network->unknown_cap_exist = false;
2204 static inline u8 rtllib_SignalStrengthTranslate(u8 CurrSS)
2208 if (CurrSS >= 71 && CurrSS <= 100)
2209 RetSS = 90 + ((CurrSS - 70) / 3);
2210 else if (CurrSS >= 41 && CurrSS <= 70)
2211 RetSS = 78 + ((CurrSS - 40) / 3);
2212 else if (CurrSS >= 31 && CurrSS <= 40)
2213 RetSS = 66 + (CurrSS - 30);
2214 else if (CurrSS >= 21 && CurrSS <= 30)
2215 RetSS = 54 + (CurrSS - 20);
2216 else if (CurrSS >= 5 && CurrSS <= 20)
2217 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2218 else if (CurrSS == 4)
2220 else if (CurrSS == 3)
2222 else if (CurrSS == 2)
2224 else if (CurrSS == 1)
2232 static long rtllib_translate_todbm(u8 signal_strength_index)
2236 signal_power = (long)((signal_strength_index + 1) >> 1);
2239 return signal_power;
2242 static inline int rtllib_network_init(
2243 struct rtllib_device *ieee,
2244 struct rtllib_probe_response *beacon,
2245 struct rtllib_network *network,
2246 struct rtllib_rx_stats *stats)
2250 network->qos_data.active = 0;
2251 network->qos_data.supported = 0;
2252 network->qos_data.param_count = 0;
2253 network->qos_data.old_param_count = 0;
2255 memset(&network->qos_data, 0, sizeof(struct rtllib_qos_data));
2257 /* Pull out fixed field data */
2258 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2259 network->capability = le16_to_cpu(beacon->capability);
2260 network->last_scanned = jiffies;
2261 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2262 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2263 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2264 /* Where to pull this? beacon->listen_interval;*/
2265 network->listen_interval = 0x0A;
2266 network->rates_len = network->rates_ex_len = 0;
2267 network->last_associate = 0;
2268 network->ssid_len = 0;
2269 network->hidden_ssid_len = 0;
2270 memset(network->hidden_ssid, 0, sizeof(network->hidden_ssid));
2272 network->atim_window = 0;
2273 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2275 network->berp_info_valid = false;
2276 network->broadcom_cap_exist = false;
2277 network->ralink_cap_exist = false;
2278 network->atheros_cap_exist = false;
2279 network->cisco_cap_exist = false;
2280 network->unknown_cap_exist = false;
2281 network->realtek_cap_exit = false;
2282 network->marvell_cap_exist = false;
2283 network->airgo_cap_exist = false;
2284 network->Turbo_Enable = 0;
2285 network->SignalStrength = stats->SignalStrength;
2286 network->RSSI = stats->SignalStrength;
2287 network->CountryIeLen = 0;
2288 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2289 HTInitializeBssDesc(&network->bssht);
2290 if (stats->freq == RTLLIB_52GHZ_BAND) {
2291 /* for A band (No DS info) */
2292 network->channel = stats->received_channel;
2294 network->flags |= NETWORK_HAS_CCK;
2296 network->wpa_ie_len = 0;
2297 network->rsn_ie_len = 0;
2298 network->wzc_ie_len = 0;
2300 if (rtllib_parse_info_param(ieee,
2301 beacon->info_element,
2302 (stats->len - sizeof(*beacon)),
2308 if (stats->freq == RTLLIB_52GHZ_BAND)
2309 network->mode = IEEE_A;
2311 if (network->flags & NETWORK_HAS_OFDM)
2312 network->mode |= IEEE_G;
2313 if (network->flags & NETWORK_HAS_CCK)
2314 network->mode |= IEEE_B;
2317 if (network->mode == 0) {
2318 RTLLIB_DEBUG_SCAN("Filtered out '%s (%pM)' "
2320 escape_essid(network->ssid,
2326 if (network->bssht.bdSupportHT) {
2327 if (network->mode == IEEE_A)
2328 network->mode = IEEE_N_5G;
2329 else if (network->mode & (IEEE_G | IEEE_B))
2330 network->mode = IEEE_N_24G;
2332 if (rtllib_is_empty_essid(network->ssid, network->ssid_len))
2333 network->flags |= NETWORK_EMPTY_ESSID;
2334 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2335 stats->noise = rtllib_translate_todbm((u8)(100-stats->signal)) - 25;
2337 memcpy(&network->stats, stats, sizeof(network->stats));
2342 static inline int is_same_network(struct rtllib_network *src,
2343 struct rtllib_network *dst, u8 ssidbroad)
2345 /* A network is only a duplicate if the channel, BSSID, ESSID
2346 * and the capability field (in particular IBSS and BSS) all match.
2347 * We treat all <hidden> with the same BSSID and channel
2349 return (((src->ssid_len == dst->ssid_len) || (!ssidbroad)) &&
2350 (src->channel == dst->channel) &&
2351 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2352 (!memcmp(src->ssid, dst->ssid, src->ssid_len) ||
2354 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2355 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2356 ((src->capability & WLAN_CAPABILITY_ESS) ==
2357 (dst->capability & WLAN_CAPABILITY_ESS)));
2360 static inline void update_ibss_network(struct rtllib_network *dst,
2361 struct rtllib_network *src)
2363 memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
2364 dst->last_scanned = jiffies;
2368 static inline void update_network(struct rtllib_network *dst,
2369 struct rtllib_network *src)
2374 memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
2375 dst->capability = src->capability;
2376 memcpy(dst->rates, src->rates, src->rates_len);
2377 dst->rates_len = src->rates_len;
2378 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2379 dst->rates_ex_len = src->rates_ex_len;
2380 if (src->ssid_len > 0) {
2381 if (dst->ssid_len == 0) {
2382 memset(dst->hidden_ssid, 0, sizeof(dst->hidden_ssid));
2383 dst->hidden_ssid_len = src->ssid_len;
2384 memcpy(dst->hidden_ssid, src->ssid, src->ssid_len);
2386 memset(dst->ssid, 0, dst->ssid_len);
2387 dst->ssid_len = src->ssid_len;
2388 memcpy(dst->ssid, src->ssid, src->ssid_len);
2391 dst->mode = src->mode;
2392 dst->flags = src->flags;
2393 dst->time_stamp[0] = src->time_stamp[0];
2394 dst->time_stamp[1] = src->time_stamp[1];
2395 if (src->flags & NETWORK_HAS_ERP_VALUE) {
2396 dst->erp_value = src->erp_value;
2397 dst->berp_info_valid = src->berp_info_valid = true;
2399 dst->beacon_interval = src->beacon_interval;
2400 dst->listen_interval = src->listen_interval;
2401 dst->atim_window = src->atim_window;
2402 dst->dtim_period = src->dtim_period;
2403 dst->dtim_data = src->dtim_data;
2404 dst->last_dtim_sta_time = src->last_dtim_sta_time;
2405 memcpy(&dst->tim, &src->tim, sizeof(struct rtllib_tim_parameters));
2407 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2408 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2409 dst->bssht.bdHTCapLen = src->bssht.bdHTCapLen;
2410 memcpy(dst->bssht.bdHTCapBuf, src->bssht.bdHTCapBuf,
2411 src->bssht.bdHTCapLen);
2412 dst->bssht.bdHTInfoLen = src->bssht.bdHTInfoLen;
2413 memcpy(dst->bssht.bdHTInfoBuf, src->bssht.bdHTInfoBuf,
2414 src->bssht.bdHTInfoLen);
2415 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2416 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2417 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2418 dst->ralink_cap_exist = src->ralink_cap_exist;
2419 dst->atheros_cap_exist = src->atheros_cap_exist;
2420 dst->realtek_cap_exit = src->realtek_cap_exit;
2421 dst->marvell_cap_exist = src->marvell_cap_exist;
2422 dst->cisco_cap_exist = src->cisco_cap_exist;
2423 dst->airgo_cap_exist = src->airgo_cap_exist;
2424 dst->unknown_cap_exist = src->unknown_cap_exist;
2425 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2426 dst->wpa_ie_len = src->wpa_ie_len;
2427 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2428 dst->rsn_ie_len = src->rsn_ie_len;
2429 memcpy(dst->wzc_ie, src->wzc_ie, src->wzc_ie_len);
2430 dst->wzc_ie_len = src->wzc_ie_len;
2432 dst->last_scanned = jiffies;
2433 /* qos related parameters */
2434 qos_active = dst->qos_data.active;
2435 old_param = dst->qos_data.param_count;
2436 dst->qos_data.supported = src->qos_data.supported;
2437 if (dst->flags & NETWORK_HAS_QOS_PARAMETERS)
2438 memcpy(&dst->qos_data, &src->qos_data,
2439 sizeof(struct rtllib_qos_data));
2440 if (dst->qos_data.supported == 1) {
2443 ("QoS the network %s is QoS supported\n",
2447 ("QoS the network is QoS supported\n");
2449 dst->qos_data.active = qos_active;
2450 dst->qos_data.old_param_count = old_param;
2452 /* dst->last_associate is not overwritten */
2453 dst->wmm_info = src->wmm_info;
2454 if (src->wmm_param[0].ac_aci_acm_aifsn ||
2455 src->wmm_param[1].ac_aci_acm_aifsn ||
2456 src->wmm_param[2].ac_aci_acm_aifsn ||
2457 src->wmm_param[1].ac_aci_acm_aifsn)
2458 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2460 dst->SignalStrength = src->SignalStrength;
2461 dst->RSSI = src->RSSI;
2462 dst->Turbo_Enable = src->Turbo_Enable;
2464 dst->CountryIeLen = src->CountryIeLen;
2465 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2467 dst->bWithAironetIE = src->bWithAironetIE;
2468 dst->bCkipSupported = src->bCkipSupported;
2469 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2470 dst->bCcxRmEnable = src->bCcxRmEnable;
2471 dst->MBssidMask = src->MBssidMask;
2472 dst->bMBssidValid = src->bMBssidValid;
2473 memcpy(dst->MBssid, src->MBssid, 6);
2474 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2475 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2478 static inline int is_beacon(__le16 fc)
2480 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == RTLLIB_STYPE_BEACON);
2483 static int IsPassiveChannel(struct rtllib_device *rtllib, u8 channel)
2485 if (MAX_CHANNEL_NUMBER < channel) {
2486 printk(KERN_INFO "%s(): Invalid Channel\n", __func__);
2490 if (rtllib->active_channel_map[channel] == 2)
2496 int rtllib_legal_channel(struct rtllib_device *rtllib, u8 channel)
2498 if (MAX_CHANNEL_NUMBER < channel) {
2499 printk(KERN_INFO "%s(): Invalid Channel\n", __func__);
2502 if (rtllib->active_channel_map[channel] > 0)
2507 EXPORT_SYMBOL(rtllib_legal_channel);
2509 static inline void rtllib_process_probe_response(
2510 struct rtllib_device *ieee,
2511 struct rtllib_probe_response *beacon,
2512 struct rtllib_rx_stats *stats)
2514 struct rtllib_network *target;
2515 struct rtllib_network *oldest = NULL;
2516 struct rtllib_info_element *info_element = &beacon->info_element[0];
2517 unsigned long flags;
2519 struct rtllib_network *network = kzalloc(sizeof(struct rtllib_network),
2526 "'%s' ( %pM ): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2527 escape_essid(info_element->data, info_element->len),
2528 beacon->header.addr3,
2529 (beacon->capability & (1<<0xf)) ? '1' : '0',
2530 (beacon->capability & (1<<0xe)) ? '1' : '0',
2531 (beacon->capability & (1<<0xd)) ? '1' : '0',
2532 (beacon->capability & (1<<0xc)) ? '1' : '0',
2533 (beacon->capability & (1<<0xb)) ? '1' : '0',
2534 (beacon->capability & (1<<0xa)) ? '1' : '0',
2535 (beacon->capability & (1<<0x9)) ? '1' : '0',
2536 (beacon->capability & (1<<0x8)) ? '1' : '0',
2537 (beacon->capability & (1<<0x7)) ? '1' : '0',
2538 (beacon->capability & (1<<0x6)) ? '1' : '0',
2539 (beacon->capability & (1<<0x5)) ? '1' : '0',
2540 (beacon->capability & (1<<0x4)) ? '1' : '0',
2541 (beacon->capability & (1<<0x3)) ? '1' : '0',
2542 (beacon->capability & (1<<0x2)) ? '1' : '0',
2543 (beacon->capability & (1<<0x1)) ? '1' : '0',
2544 (beacon->capability & (1<<0x0)) ? '1' : '0');
2546 if (rtllib_network_init(ieee, beacon, network, stats)) {
2547 RTLLIB_DEBUG_SCAN("Dropped '%s' ( %pM) via %s.\n",
2548 escape_essid(info_element->data,
2550 beacon->header.addr3,
2551 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2552 RTLLIB_STYPE_PROBE_RESP ?
2553 "PROBE RESPONSE" : "BEACON");
2558 if (!rtllib_legal_channel(ieee, network->channel))
2561 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2562 RTLLIB_STYPE_PROBE_RESP) {
2563 if (IsPassiveChannel(ieee, network->channel)) {
2564 printk(KERN_INFO "GetScanInfo(): For Global Domain, "
2565 "filter probe response at channel(%d).\n",
2571 /* The network parsed correctly -- so now we scan our known networks
2572 * to see if we can find it in our list.
2574 * NOTE: This search is definitely not optimized. Once its doing
2575 * the "right thing" we'll optimize it for efficiency if
2578 /* Search for this entry in the list and update it if it is
2581 spin_lock_irqsave(&ieee->lock, flags);
2582 if (is_same_network(&ieee->current_network, network,
2583 (network->ssid_len ? 1 : 0))) {
2584 update_network(&ieee->current_network, network);
2585 if ((ieee->current_network.mode == IEEE_N_24G ||
2586 ieee->current_network.mode == IEEE_G)
2587 && ieee->current_network.berp_info_valid) {
2588 if (ieee->current_network.erp_value & ERP_UseProtection)
2589 ieee->current_network.buseprotection = true;
2591 ieee->current_network.buseprotection = false;
2593 if (is_beacon(beacon->header.frame_ctl)) {
2594 if (ieee->state >= RTLLIB_LINKED)
2595 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2598 list_for_each_entry(target, &ieee->network_list, list) {
2599 if (is_same_network(target, network,
2600 (target->ssid_len ? 1 : 0)))
2602 if ((oldest == NULL) ||
2603 (target->last_scanned < oldest->last_scanned))
2607 /* If we didn't find a match, then get a new network slot to initialize
2608 * with this beacon's information */
2609 if (&target->list == &ieee->network_list) {
2610 if (list_empty(&ieee->network_free_list)) {
2611 /* If there are no more slots, expire the oldest */
2612 list_del(&oldest->list);
2614 RTLLIB_DEBUG_SCAN("Expired '%s' ( %pM) from "
2616 escape_essid(target->ssid,
2620 /* Otherwise just pull from the free list */
2621 target = list_entry(ieee->network_free_list.next,
2622 struct rtllib_network, list);
2623 list_del(ieee->network_free_list.next);
2627 RTLLIB_DEBUG_SCAN("Adding '%s' ( %pM) via %s.\n",
2628 escape_essid(network->ssid,
2629 network->ssid_len), network->bssid,
2630 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2631 RTLLIB_STYPE_PROBE_RESP ?
2632 "PROBE RESPONSE" : "BEACON");
2633 memcpy(target, network, sizeof(*target));
2634 list_add_tail(&target->list, &ieee->network_list);
2635 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2636 rtllib_softmac_new_net(ieee, network);
2638 RTLLIB_DEBUG_SCAN("Updating '%s' ( %pM) via %s.\n",
2639 escape_essid(target->ssid,
2640 target->ssid_len), target->bssid,
2641 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2642 RTLLIB_STYPE_PROBE_RESP ?
2643 "PROBE RESPONSE" : "BEACON");
2645 /* we have an entry and we are going to update it. But this
2646 * entry may be already expired. In this case we do the same
2647 * as we found a new net and call the new_net handler
2649 renew = !time_after(target->last_scanned + ieee->scan_age,
2651 if ((!target->ssid_len) &&
2652 (((network->ssid_len > 0) && (target->hidden_ssid_len == 0))
2653 || ((ieee->current_network.ssid_len == network->ssid_len) &&
2654 (strncmp(ieee->current_network.ssid, network->ssid,
2655 network->ssid_len) == 0) &&
2656 (ieee->state == RTLLIB_NOLINK))))
2658 update_network(target, network);
2659 if (renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2660 rtllib_softmac_new_net(ieee, network);
2663 spin_unlock_irqrestore(&ieee->lock, flags);
2664 if (is_beacon(beacon->header.frame_ctl) &&
2665 is_same_network(&ieee->current_network, network,
2666 (network->ssid_len ? 1 : 0)) &&
2667 (ieee->state == RTLLIB_LINKED)) {
2668 if (ieee->handle_beacon != NULL)
2669 ieee->handle_beacon(ieee->dev, beacon,
2670 &ieee->current_network);
2677 void rtllib_rx_mgt(struct rtllib_device *ieee,
2678 struct sk_buff *skb,
2679 struct rtllib_rx_stats *stats)
2681 struct rtllib_hdr_4addr *header = (struct rtllib_hdr_4addr *)skb->data ;
2683 if (WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_PROBE_RESP &&
2684 WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_BEACON)
2685 ieee->last_rx_ps_time = jiffies;
2687 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2689 case RTLLIB_STYPE_BEACON:
2690 RTLLIB_DEBUG_MGMT("received BEACON (%d)\n",
2691 WLAN_FC_GET_STYPE(header->frame_ctl));
2692 RTLLIB_DEBUG_SCAN("Beacon\n");
2693 rtllib_process_probe_response(
2694 ieee, (struct rtllib_probe_response *)header,
2697 if (ieee->sta_sleep || (ieee->ps != RTLLIB_PS_DISABLED &&
2698 ieee->iw_mode == IW_MODE_INFRA &&
2699 ieee->state == RTLLIB_LINKED))
2700 tasklet_schedule(&ieee->ps_task);
2704 case RTLLIB_STYPE_PROBE_RESP:
2705 RTLLIB_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2706 WLAN_FC_GET_STYPE(header->frame_ctl));
2707 RTLLIB_DEBUG_SCAN("Probe response\n");
2708 rtllib_process_probe_response(ieee,
2709 (struct rtllib_probe_response *)header, stats);
2711 case RTLLIB_STYPE_PROBE_REQ:
2712 RTLLIB_DEBUG_MGMT("received PROBE RESQUEST (%d)\n",
2713 WLAN_FC_GET_STYPE(header->frame_ctl));
2714 RTLLIB_DEBUG_SCAN("Probe request\n");
2715 if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) &&
2716 ((ieee->iw_mode == IW_MODE_ADHOC ||
2717 ieee->iw_mode == IW_MODE_MASTER) &&
2718 ieee->state == RTLLIB_LINKED))
2719 rtllib_rx_probe_rq(ieee, skb);