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 <andrea.merello@gmail.com>
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/wireless.h>
40 #include <linux/etherdevice.h>
41 #include <linux/uaccess.h>
42 #include <linux/ctype.h>
47 static inline void rtllib_monitor_rx(struct rtllib_device *ieee,
48 struct sk_buff *skb, struct rtllib_rx_stats *rx_status,
52 skb_reset_mac_header(skb);
53 skb_pull(skb, hdr_length);
54 skb->pkt_type = PACKET_OTHERHOST;
55 skb->protocol = htons(ETH_P_80211_RAW);
56 memset(skb->cb, 0, sizeof(skb->cb));
60 /* Called only as a tasklet (software IRQ) */
61 static struct rtllib_frag_entry *
62 rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
63 unsigned int frag, u8 tid, u8 *src, u8 *dst)
65 struct rtllib_frag_entry *entry;
68 for (i = 0; i < RTLLIB_FRAG_CACHE_LEN; i++) {
69 entry = &ieee->frag_cache[tid][i];
70 if (entry->skb != NULL &&
71 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
73 "expiring fragment cache entry seq=%u last_frag=%u\n",
74 entry->seq, entry->last_frag);
75 dev_kfree_skb_any(entry->skb);
79 if (entry->skb != NULL && entry->seq == seq &&
80 (entry->last_frag + 1 == frag || frag == -1) &&
81 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
82 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
89 /* Called only as a tasklet (software IRQ) */
90 static struct sk_buff *
91 rtllib_frag_cache_get(struct rtllib_device *ieee,
92 struct rtllib_hdr_4addr *hdr)
94 struct sk_buff *skb = NULL;
95 u16 fc = le16_to_cpu(hdr->frame_ctl);
96 u16 sc = le16_to_cpu(hdr->seq_ctl);
97 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
98 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
99 struct rtllib_frag_entry *entry;
100 struct rtllib_hdr_3addrqos *hdr_3addrqos;
101 struct rtllib_hdr_4addrqos *hdr_4addrqos;
104 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
105 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
106 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
109 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
110 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
111 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
119 /* Reserve enough space to fit maximum frame length */
120 skb = dev_alloc_skb(ieee->dev->mtu +
121 sizeof(struct rtllib_hdr_4addr) +
126 (RTLLIB_QOS_HAS_SEQ(fc) ? 2 : 0) /* QOS Control */);
130 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
131 ieee->frag_next_idx[tid]++;
132 if (ieee->frag_next_idx[tid] >= RTLLIB_FRAG_CACHE_LEN)
133 ieee->frag_next_idx[tid] = 0;
135 if (entry->skb != NULL)
136 dev_kfree_skb_any(entry->skb);
138 entry->first_frag_time = jiffies;
140 entry->last_frag = frag;
142 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
143 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
145 /* received a fragment of a frame for which the head fragment
146 * should have already been received
148 entry = rtllib_frag_cache_find(ieee, seq, frag, tid, hdr->addr2,
151 entry->last_frag = frag;
160 /* Called only as a tasklet (software IRQ) */
161 static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee,
162 struct rtllib_hdr_4addr *hdr)
164 u16 fc = le16_to_cpu(hdr->frame_ctl);
165 u16 sc = le16_to_cpu(hdr->seq_ctl);
166 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
167 struct rtllib_frag_entry *entry;
168 struct rtllib_hdr_3addrqos *hdr_3addrqos;
169 struct rtllib_hdr_4addrqos *hdr_4addrqos;
172 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
173 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
174 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
177 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
178 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
179 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
186 entry = rtllib_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
191 "could not invalidate fragment cache entry (seq=%u)\n", seq);
199 /* rtllib_rx_frame_mgtmt
201 * Responsible for handling management control frames
203 * Called by rtllib_rx
206 rtllib_rx_frame_mgmt(struct rtllib_device *ieee, struct sk_buff *skb,
207 struct rtllib_rx_stats *rx_stats, u16 type,
210 /* On the struct stats definition there is written that
211 * this is not mandatory.... but seems that the probe
212 * response parser uses it
214 struct rtllib_hdr_3addr *hdr = (struct rtllib_hdr_3addr *)skb->data;
216 rx_stats->len = skb->len;
217 rtllib_rx_mgt(ieee, skb, rx_stats);
218 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN))) {
219 dev_kfree_skb_any(skb);
222 rtllib_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
224 dev_kfree_skb_any(skb);
229 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation
230 * 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 lib80211_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);
295 tcb_desc->bHwSec = 1;
297 if (ieee->need_sw_enc)
298 tcb_desc->bHwSec = 0;
301 hdr = (struct rtllib_hdr_4addr *) skb->data;
302 hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
304 atomic_inc(&crypt->refcnt);
305 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
306 atomic_dec(&crypt->refcnt);
309 "decryption failed (SA= %pM) res=%d\n", hdr->addr2, res);
311 RTLLIB_DEBUG_DROP("Decryption failed ICV mismatch (key %d)\n",
312 skb->data[hdrlen + 3] >> 6);
313 ieee->ieee_stats.rx_discards_undecryptable++;
321 /* Called only as a tasklet (software IRQ), by rtllib_rx */
323 rtllib_rx_frame_decrypt_msdu(struct rtllib_device *ieee, struct sk_buff *skb,
324 int keyidx, struct lib80211_crypt_data *crypt)
326 struct rtllib_hdr_4addr *hdr;
329 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
331 if (ieee->hwsec_active) {
332 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);
345 atomic_dec(&crypt->refcnt);
347 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed (SA= %pM keyidx=%d)\n",
348 ieee->dev->name, hdr->addr2, keyidx);
356 /* this function is stolen from ipw2200 driver*/
357 #define IEEE_PACKET_RETRY_TIME (5*HZ)
358 static int is_duplicate_packet(struct rtllib_device *ieee,
359 struct rtllib_hdr_4addr *header)
361 u16 fc = le16_to_cpu(header->frame_ctl);
362 u16 sc = le16_to_cpu(header->seq_ctl);
363 u16 seq = WLAN_GET_SEQ_SEQ(sc);
364 u16 frag = WLAN_GET_SEQ_FRAG(sc);
365 u16 *last_seq, *last_frag;
366 unsigned long *last_time;
367 struct rtllib_hdr_3addrqos *hdr_3addrqos;
368 struct rtllib_hdr_4addrqos *hdr_4addrqos;
371 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
372 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)header;
373 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
376 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
377 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)header;
378 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
385 switch (ieee->iw_mode) {
389 struct ieee_ibss_seq *entry = NULL;
390 u8 *mac = header->addr2;
391 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);
403 memcpy(entry->mac, mac, ETH_ALEN);
404 entry->seq_num[tid] = seq;
405 entry->frag_num[tid] = frag;
406 entry->packet_time[tid] = jiffies;
407 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
410 last_seq = &entry->seq_num[tid];
411 last_frag = &entry->frag_num[tid];
412 last_time = &entry->packet_time[tid];
417 last_seq = &ieee->last_rxseq_num[tid];
418 last_frag = &ieee->last_rxfrag_num[tid];
419 last_time = &ieee->last_packet_time[tid];
425 if ((*last_seq == seq) &&
426 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
427 if (*last_frag == frag)
429 if (*last_frag + 1 != frag)
430 /* out-of-order fragment */
436 *last_time = jiffies;
444 static bool AddReorderEntry(struct rx_ts_record *pTS,
445 struct rx_reorder_entry *pReorderEntry)
447 struct list_head *pList = &pTS->RxPendingPktList;
449 while (pList->next != &pTS->RxPendingPktList) {
450 if (SN_LESS(pReorderEntry->SeqNum, ((struct rx_reorder_entry *)
451 list_entry(pList->next, struct rx_reorder_entry,
454 else if (SN_EQUAL(pReorderEntry->SeqNum,
455 ((struct rx_reorder_entry *)list_entry(pList->next,
456 struct rx_reorder_entry, List))->SeqNum))
461 pReorderEntry->List.next = pList->next;
462 pReorderEntry->List.next->prev = &pReorderEntry->List;
463 pReorderEntry->List.prev = pList;
464 pList->next = &pReorderEntry->List;
469 void rtllib_indicate_packets(struct rtllib_device *ieee, struct rtllib_rxb **prxbIndicateArray, u8 index)
471 struct net_device_stats *stats = &ieee->stats;
475 for (j = 0; j < index; j++) {
476 struct rtllib_rxb *prxb = prxbIndicateArray[j];
478 for (i = 0; i < prxb->nr_subframes; i++) {
479 struct sk_buff *sub_skb = prxb->subframes[i];
481 /* convert hdr + possible LLC headers into Ethernet header */
482 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
483 if (sub_skb->len >= 8 &&
484 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
485 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
486 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
487 /* remove RFC1042 or Bridge-Tunnel encapsulation
488 * and replace EtherType
490 skb_pull(sub_skb, SNAP_SIZE);
491 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
492 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
495 /* Leave Ethernet header part of hdr and full payload */
497 memcpy(skb_push(sub_skb, 2), &len, 2);
498 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
499 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
502 /* Indicate the packets to upper layer */
505 stats->rx_bytes += sub_skb->len;
507 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
508 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
509 sub_skb->dev = ieee->dev;
510 sub_skb->dev->stats.rx_packets++;
511 sub_skb->dev->stats.rx_bytes += sub_skb->len;
512 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
513 ieee->last_rx_ps_time = jiffies;
522 void rtllib_FlushRxTsPendingPkts(struct rtllib_device *ieee, struct rx_ts_record *pTS)
524 struct rx_reorder_entry *pRxReorderEntry;
527 del_timer_sync(&pTS->RxPktPendingTimer);
528 while (!list_empty(&pTS->RxPendingPktList)) {
529 if (RfdCnt >= REORDER_WIN_SIZE) {
530 netdev_info(ieee->dev,
531 "-------------->%s() error! RfdCnt >= REORDER_WIN_SIZE\n",
536 pRxReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev, struct rx_reorder_entry, List);
537 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum %d!\n", __func__, pRxReorderEntry->SeqNum);
538 list_del_init(&pRxReorderEntry->List);
540 ieee->RfdArray[RfdCnt] = pRxReorderEntry->prxb;
543 list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
545 rtllib_indicate_packets(ieee, ieee->RfdArray, RfdCnt);
547 pTS->RxIndicateSeq = 0xffff;
550 static void RxReorderIndicatePacket(struct rtllib_device *ieee,
551 struct rtllib_rxb *prxb,
552 struct rx_ts_record *pTS, u16 SeqNum)
554 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
555 struct rx_reorder_entry *pReorderEntry = NULL;
556 u8 WinSize = pHTInfo->RxReorderWinSize;
559 bool bMatchWinStart = false, bPktInBuf = false;
562 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Seq is %d, pTS->RxIndicateSeq is %d, WinSize is %d\n", __func__, SeqNum,
563 pTS->RxIndicateSeq, WinSize);
565 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
567 WinEnd = (pTS->RxIndicateSeq + WinSize - 1) % 4096;
568 /* Rx Reorder initialize condition.*/
569 if (pTS->RxIndicateSeq == 0xffff)
570 pTS->RxIndicateSeq = SeqNum;
572 /* Drop out the packet which SeqNum is smaller than WinStart */
573 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
574 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
575 pTS->RxIndicateSeq, SeqNum);
576 pHTInfo->RxReorderDropCounter++;
580 for (i = 0; i < prxb->nr_subframes; i++)
581 dev_kfree_skb(prxb->subframes[i]);
585 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
589 /* Sliding window manipulation. Conditions includes:
590 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
591 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
593 if (SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
594 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
595 bMatchWinStart = true;
596 } else if (SN_LESS(WinEnd, SeqNum)) {
597 if (SeqNum >= (WinSize - 1))
598 pTS->RxIndicateSeq = SeqNum + 1 - WinSize;
600 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum + 1)) + 1;
601 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum);
604 /* Indication process.
605 * After Packet dropping and Sliding Window shifting as above, we can
606 * now just indicate the packets with the SeqNum smaller than latest
607 * WinStart and struct buffer other packets.
609 * For Rx Reorder condition:
610 * 1. All packets with SeqNum smaller than WinStart => Indicate
611 * 2. All packets with SeqNum larger than or equal to
612 * WinStart => Buffer it.
614 if (bMatchWinStart) {
615 /* Current packet is going to be indicated.*/
616 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! 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 dropped!! IndicateSeq: %d, NewSeq: %d\n",
635 __func__, pTS->RxIndicateSeq,
637 list_add_tail(&pReorderEntry->List,
638 &ieee->RxReorder_Unused_List); {
641 for (i = 0; i < prxb->nr_subframes; i++)
642 dev_kfree_skb(prxb->subframes[i]);
647 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
648 "Pkt insert into struct buffer!! IndicateSeq: %d, NewSeq: %d\n",
649 pTS->RxIndicateSeq, SeqNum);
652 /* Packets are dropped if there are not enough reorder
653 * entries. This part should be modified!! We can just
654 * indicate all the packets in struct buffer and get
657 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
661 for (i = 0; i < prxb->nr_subframes; i++)
662 dev_kfree_skb(prxb->subframes[i]);
669 /* Check if there is any packet need indicate.*/
670 while (!list_empty(&pTS->RxPendingPktList)) {
671 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): start RREORDER indicate\n", __func__);
673 pReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev,
674 struct rx_reorder_entry, List);
675 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
676 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) {
677 /* This protect struct buffer from overflow. */
678 if (index >= REORDER_WIN_SIZE) {
679 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!!\n");
684 list_del_init(&pReorderEntry->List);
686 if (SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
687 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
689 ieee->prxbIndicateArray[index] = pReorderEntry->prxb;
690 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum %d!\n", __func__, pReorderEntry->SeqNum);
693 list_add_tail(&pReorderEntry->List,
694 &ieee->RxReorder_Unused_List);
701 /* Handling pending timer. Set this timer to prevent from long time
705 if (timer_pending(&pTS->RxPktPendingTimer))
706 del_timer_sync(&pTS->RxPktPendingTimer);
707 pTS->RxTimeoutIndicateSeq = 0xffff;
709 if (index > REORDER_WIN_SIZE) {
710 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder struct buffer full!!\n");
711 spin_unlock_irqrestore(&(ieee->reorder_spinlock),
715 rtllib_indicate_packets(ieee, ieee->prxbIndicateArray, index);
719 if (bPktInBuf && pTS->RxTimeoutIndicateSeq == 0xffff) {
720 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): SET rx timeout timer\n",
722 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
723 mod_timer(&pTS->RxPktPendingTimer, jiffies +
724 msecs_to_jiffies(pHTInfo->RxReorderPendingTime));
726 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
729 static u8 parse_subframe(struct rtllib_device *ieee, struct sk_buff *skb,
730 struct rtllib_rx_stats *rx_stats,
731 struct rtllib_rxb *rxb, u8 *src, u8 *dst)
733 struct rtllib_hdr_3addr *hdr = (struct rtllib_hdr_3addr *)skb->data;
734 u16 fc = le16_to_cpu(hdr->frame_ctl);
736 u16 LLCOffset = sizeof(struct rtllib_hdr_3addr);
738 bool bIsAggregateFrame = false;
739 u16 nSubframe_Length;
740 u8 nPadding_Length = 0;
742 struct sk_buff *sub_skb;
744 /* just for debug purpose */
745 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
746 if ((RTLLIB_QOS_HAS_SEQ(fc)) &&
747 (((union frameqos *)(skb->data + RTLLIB_3ADDR_LEN))->field.reserved))
748 bIsAggregateFrame = true;
750 if (RTLLIB_QOS_HAS_SEQ(fc))
752 if (rx_stats->bContainHTC)
753 LLCOffset += sHTCLng;
755 ChkLength = LLCOffset;
757 if (skb->len <= ChkLength)
760 skb_pull(skb, LLCOffset);
761 ieee->bIsAggregateFrame = bIsAggregateFrame;
762 if (!bIsAggregateFrame) {
763 rxb->nr_subframes = 1;
765 /* altered by clark 3/30/2010
766 * The struct buffer size of the skb indicated to upper layer
767 * must be less than 5000, or the defraged IP datagram
768 * in the IP layer will exceed "ipfrag_high_tresh" and be
769 * discarded. so there must not use the function
770 * "skb_copy" and "skb_clone" for "skb".
773 /* Allocate new skb for releasing to upper layer */
774 sub_skb = dev_alloc_skb(RTLLIB_SKBBUFFER_SIZE);
777 skb_reserve(sub_skb, 12);
778 data_ptr = (u8 *)skb_put(sub_skb, skb->len);
779 memcpy(data_ptr, skb->data, skb->len);
780 sub_skb->dev = ieee->dev;
782 rxb->subframes[0] = sub_skb;
784 memcpy(rxb->src, src, ETH_ALEN);
785 memcpy(rxb->dst, dst, ETH_ALEN);
786 rxb->subframes[0]->dev = ieee->dev;
790 rxb->nr_subframes = 0;
791 memcpy(rxb->src, src, ETH_ALEN);
792 memcpy(rxb->dst, dst, ETH_ALEN);
793 while (skb->len > ETHERNET_HEADER_SIZE) {
794 /* Offset 12 denote 2 mac address */
795 nSubframe_Length = *((u16 *)(skb->data + 12));
796 nSubframe_Length = (nSubframe_Length >> 8) +
797 (nSubframe_Length << 8);
799 if (skb->len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
800 netdev_info(ieee->dev,
801 "%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",
802 __func__, rxb->nr_subframes);
803 netdev_info(ieee->dev,
804 "%s: A-MSDU parse error!! Subframe Length: %d\n",
805 __func__, nSubframe_Length);
806 netdev_info(ieee->dev,
807 "nRemain_Length is %d and nSubframe_Length is : %d\n",
808 skb->len, nSubframe_Length);
809 netdev_info(ieee->dev,
810 "The Packet SeqNum is %d\n",
815 /* move the data point to data content */
816 skb_pull(skb, ETHERNET_HEADER_SIZE);
818 /* altered by clark 3/30/2010
819 * The struct buffer size of the skb indicated to upper layer
820 * must be less than 5000, or the defraged IP datagram
821 * in the IP layer will exceed "ipfrag_high_tresh" and be
822 * discarded. so there must not use the function
823 * "skb_copy" and "skb_clone" for "skb".
826 /* Allocate new skb for releasing to upper layer */
827 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
830 skb_reserve(sub_skb, 12);
831 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
832 memcpy(data_ptr, skb->data, nSubframe_Length);
834 sub_skb->dev = ieee->dev;
835 rxb->subframes[rxb->nr_subframes++] = sub_skb;
836 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
837 RTLLIB_DEBUG_RX("ParseSubframe(): Too many 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;
859 static size_t rtllib_rx_get_hdrlen(struct rtllib_device *ieee,
861 struct rtllib_rx_stats *rx_stats)
863 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
864 u16 fc = le16_to_cpu(hdr->frame_ctl);
867 hdrlen = rtllib_get_hdrlen(fc);
868 if (HTCCheck(ieee, skb->data)) {
870 netdev_info(ieee->dev, "%s: find HTCControl!\n",
873 rx_stats->bContainHTC = true;
876 if (RTLLIB_QOS_HAS_SEQ(fc))
877 rx_stats->bIsQosData = true;
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;
906 if (GetTs(ieee, (struct ts_common_info **) &pRxTS, hdr->addr2,
907 (u8)Frame_QoSTID((u8 *)(skb->data)), RX_DIR, true)) {
908 if ((fc & (1<<11)) && (frag == pRxTS->RxLastFragNum) &&
909 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum))
911 pRxTS->RxLastFragNum = frag;
912 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
914 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip the check!!\n", __func__);
922 static void rtllib_rx_extract_addr(struct rtllib_device *ieee,
923 struct rtllib_hdr_4addr *hdr, u8 *dst,
926 u16 fc = le16_to_cpu(hdr->frame_ctl);
928 switch (fc & (RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS)) {
929 case RTLLIB_FCTL_FROMDS:
930 memcpy(dst, hdr->addr1, ETH_ALEN);
931 memcpy(src, hdr->addr3, ETH_ALEN);
932 memcpy(bssid, hdr->addr2, ETH_ALEN);
934 case RTLLIB_FCTL_TODS:
935 memcpy(dst, hdr->addr3, ETH_ALEN);
936 memcpy(src, hdr->addr2, ETH_ALEN);
937 memcpy(bssid, hdr->addr1, ETH_ALEN);
939 case RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS:
940 memcpy(dst, hdr->addr3, ETH_ALEN);
941 memcpy(src, hdr->addr4, ETH_ALEN);
942 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
945 memcpy(dst, hdr->addr1, ETH_ALEN);
946 memcpy(src, hdr->addr2, ETH_ALEN);
947 memcpy(bssid, hdr->addr3, ETH_ALEN);
952 static int rtllib_rx_data_filter(struct rtllib_device *ieee, u16 fc,
953 u8 *dst, u8 *src, u8 *bssid, u8 *addr2)
957 type = WLAN_FC_GET_TYPE(fc);
958 stype = WLAN_FC_GET_STYPE(fc);
960 /* Filter frames from different BSS */
961 if (((fc & RTLLIB_FCTL_DSTODS) != RTLLIB_FCTL_DSTODS) &&
962 !ether_addr_equal(ieee->current_network.bssid, bssid) &&
963 !is_zero_ether_addr(ieee->current_network.bssid)) {
967 /* Filter packets sent by an STA that will be forwarded by AP */
968 if (ieee->IntelPromiscuousModeInfo.bPromiscuousOn &&
969 ieee->IntelPromiscuousModeInfo.bFilterSourceStationFrame) {
970 if ((fc & RTLLIB_FCTL_TODS) && !(fc & RTLLIB_FCTL_FROMDS) &&
971 !ether_addr_equal(dst, ieee->current_network.bssid) &&
972 ether_addr_equal(bssid, ieee->current_network.bssid)) {
977 /* Nullfunc frames may have PS-bit set, so they must be passed to
978 * hostap_handle_sta_rx() before being dropped here.
980 if (!ieee->IntelPromiscuousModeInfo.bPromiscuousOn) {
981 if (stype != RTLLIB_STYPE_DATA &&
982 stype != RTLLIB_STYPE_DATA_CFACK &&
983 stype != RTLLIB_STYPE_DATA_CFPOLL &&
984 stype != RTLLIB_STYPE_DATA_CFACKPOLL &&
985 stype != RTLLIB_STYPE_QOS_DATA) {
986 if (stype != RTLLIB_STYPE_NULLFUNC)
988 "RX: dropped data frame with no data (type=0x%02x, subtype=0x%02x)\n",
994 if (ieee->iw_mode != IW_MODE_MESH) {
995 /* packets from our adapter are dropped (echo) */
996 if (!memcmp(src, ieee->dev->dev_addr, ETH_ALEN))
999 /* {broad,multi}cast packets to our BSS go through */
1000 if (is_multicast_ether_addr(dst)) {
1001 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1008 static int rtllib_rx_get_crypt(struct rtllib_device *ieee, struct sk_buff *skb,
1009 struct lib80211_crypt_data **crypt, size_t hdrlen)
1011 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1012 u16 fc = le16_to_cpu(hdr->frame_ctl);
1015 if (ieee->host_decrypt) {
1016 if (skb->len >= hdrlen + 3)
1017 idx = skb->data[hdrlen + 3] >> 6;
1019 *crypt = ieee->crypt_info.crypt[idx];
1020 /* allow NULL decrypt to indicate an station specific override
1021 * for default encryption
1023 if (*crypt && ((*crypt)->ops == NULL ||
1024 (*crypt)->ops->decrypt_mpdu == NULL))
1027 if (!*crypt && (fc & RTLLIB_FCTL_WEP)) {
1028 /* This seems to be triggered by some (multicast?)
1029 * frames from other than current BSS, so just drop the
1030 * frames silently instead of filling system log with
1033 RTLLIB_DEBUG_DROP("Decryption failed (not set) (SA= %pM)\n",
1035 ieee->ieee_stats.rx_discards_undecryptable++;
1043 static int rtllib_rx_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
1044 struct rtllib_rx_stats *rx_stats,
1045 struct lib80211_crypt_data *crypt, size_t hdrlen)
1047 struct rtllib_hdr_4addr *hdr;
1052 hdr = (struct rtllib_hdr_4addr *)skb->data;
1053 fc = le16_to_cpu(hdr->frame_ctl);
1054 sc = le16_to_cpu(hdr->seq_ctl);
1055 frag = WLAN_GET_SEQ_FRAG(sc);
1057 if ((!rx_stats->Decrypted))
1058 ieee->need_sw_enc = 1;
1060 ieee->need_sw_enc = 0;
1062 keyidx = rtllib_rx_frame_decrypt(ieee, skb, crypt);
1063 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) && (keyidx < 0)) {
1064 netdev_info(ieee->dev, "%s: decrypt frame error\n", __func__);
1068 hdr = (struct rtllib_hdr_4addr *) skb->data;
1069 if ((frag != 0 || (fc & RTLLIB_FCTL_MOREFRAGS))) {
1071 struct sk_buff *frag_skb = rtllib_frag_cache_get(ieee, hdr);
1073 RTLLIB_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1076 RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
1077 "Rx cannot get skb from fragment cache (morefrag=%d seq=%u frag=%u)\n",
1078 (fc & RTLLIB_FCTL_MOREFRAGS) != 0,
1079 WLAN_GET_SEQ_SEQ(sc), frag);
1086 if (frag_skb->tail + flen > frag_skb->end) {
1087 netdev_warn(ieee->dev,
1088 "%s: host decrypted and reassembled frame did not fit skb\n",
1090 rtllib_frag_cache_invalidate(ieee, hdr);
1095 /* copy first fragment (including full headers) into
1096 * beginning of the fragment cache skb
1098 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1100 /* append frame payload to the end of the fragment
1103 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1106 dev_kfree_skb_any(skb);
1109 if (fc & RTLLIB_FCTL_MOREFRAGS) {
1110 /* more fragments expected - leave the skb in fragment
1111 * cache for now; it will be delivered to upper layers
1112 * 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
1121 hdr = (struct rtllib_hdr_4addr *) skb->data;
1122 rtllib_frag_cache_invalidate(ieee, hdr);
1125 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1126 * encrypted/authenticated
1128 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
1129 rtllib_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) {
1130 netdev_info(ieee->dev, "%s: ==>decrypt msdu error\n", __func__);
1134 hdr = (struct rtllib_hdr_4addr *) skb->data;
1135 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep) {
1136 if (/*ieee->ieee802_1x &&*/
1137 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1139 /* pass unencrypted EAPOL frames even if encryption is
1142 struct eapol *eap = (struct eapol *)(skb->data +
1144 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1145 eap_get_type(eap->type));
1148 "encryption configured, but RX frame not encrypted (SA= %pM)\n",
1154 if (crypt && !(fc & RTLLIB_FCTL_WEP) &&
1155 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1156 struct eapol *eap = (struct eapol *)(skb->data +
1158 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1159 eap_get_type(eap->type));
1162 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
1163 !rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1165 "dropped unencrypted RX data frame from %pM (drop_unencrypted=1)\n",
1170 if (rtllib_is_eapol_frame(ieee, skb, hdrlen))
1171 netdev_warn(ieee->dev, "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 netdev_info(dev, "%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
1220 skb_pull(sub_skb, SNAP_SIZE);
1221 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1222 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1225 /* Leave Ethernet header part of hdr and full payload */
1227 memcpy(skb_push(sub_skb, 2), &len, 2);
1228 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1229 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1232 ieee->stats.rx_packets++;
1233 ieee->stats.rx_bytes += sub_skb->len;
1235 if (is_multicast_ether_addr(dst))
1236 ieee->stats.multicast++;
1238 /* Indicate the packets to upper layer */
1239 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1240 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1242 sub_skb->dev->stats.rx_packets++;
1243 sub_skb->dev->stats.rx_bytes += sub_skb->len;
1244 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 lib80211_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);
1274 unicast = !multicast;
1275 if (unicast && !ether_addr_equal(dev->dev_addr, hdr->addr1)) {
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 netdev_info(dev, "%s():ERR!!! skb->len is smaller than hdrlen\n",
1290 /* Filter Duplicate pkt */
1291 ret = rtllib_rx_check_duplicate(ieee, skb, multicast);
1295 /* Filter CTRL Frame */
1296 if (type == RTLLIB_FTYPE_CTL)
1299 /* Filter MGNT Frame */
1300 if (type == RTLLIB_FTYPE_MGMT) {
1303 if (rtllib_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1309 /* Filter WAPI DATA Frame */
1311 /* Update statstics for AP roaming */
1313 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1314 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1316 dev->last_rx = jiffies;
1318 /* Data frame - extract src/dst addresses */
1319 rtllib_rx_extract_addr(ieee, hdr, dst, src, bssid);
1321 /* Filter Data frames */
1322 ret = rtllib_rx_data_filter(ieee, fc, dst, src, bssid, hdr->addr2);
1326 if (skb->len == hdrlen)
1329 /* Send pspoll based on moredata */
1330 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == LPS_IS_SLEEP)
1331 && (ieee->polling) && (!bToOtherSTA)) {
1332 if (WLAN_FC_MORE_DATA(fc)) {
1333 /* more data bit is set, let's request a new frame from the AP */
1334 rtllib_sta_ps_send_pspoll_frame(ieee);
1336 ieee->polling = false;
1340 /* Get crypt if encrypted */
1341 ret = rtllib_rx_get_crypt(ieee, skb, &crypt, hdrlen);
1345 /* Decrypt data frame (including reassemble) */
1346 ret = rtllib_rx_decrypt(ieee, skb, rx_stats, crypt, hdrlen);
1352 /* Get TS for Rx Reorder */
1353 hdr = (struct rtllib_hdr_4addr *) skb->data;
1354 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1355 && !is_multicast_ether_addr(hdr->addr1)
1356 && (!bToOtherSTA)) {
1357 TID = Frame_QoSTID(skb->data);
1358 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1359 GetTs(ieee, (struct ts_common_info **) &pTS, hdr->addr2, TID, RX_DIR, true);
1360 if (TID != 0 && TID != 3)
1361 ieee->bis_any_nonbepkts = true;
1364 /* Parse rx data frame (For AMSDU) */
1365 /* skb: hdr + (possible reassembled) full plaintext payload */
1366 payload = skb->data + hdrlen;
1367 rxb = kmalloc(sizeof(struct rtllib_rxb), GFP_ATOMIC);
1371 /* to parse amsdu packets */
1372 /* qos data packets & reserved bit is 1 */
1373 if (parse_subframe(ieee, skb, rx_stats, rxb, src, dst) == 0) {
1374 /* only to free rxb, and not submit the packets to upper layer */
1375 for (i = 0; i < rxb->nr_subframes; i++)
1376 dev_kfree_skb(rxb->subframes[i]);
1382 /* Update WAPI PN */
1384 /* Check if leave LPS */
1386 if (ieee->bIsAggregateFrame)
1387 nr_subframes = rxb->nr_subframes;
1391 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod += nr_subframes;
1392 rtllib_rx_check_leave_lps(ieee, unicast, nr_subframes);
1395 /* Indicate packets to upper layer or Rx Reorder */
1396 if (ieee->pHTInfo->bCurRxReorderEnable == false || pTS == NULL || bToOtherSTA)
1397 rtllib_rx_indicate_pkt_legacy(ieee, rx_stats, rxb, dst, src);
1399 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1407 ieee->stats.rx_dropped++;
1409 /* Returning 0 indicates to caller that we have not handled the SKB--
1410 * so it is still allocated and can be used again by underlying
1411 * hardware as a DMA target
1416 static int rtllib_rx_Master(struct rtllib_device *ieee, struct sk_buff *skb,
1417 struct rtllib_rx_stats *rx_stats)
1422 static int rtllib_rx_Monitor(struct rtllib_device *ieee, struct sk_buff *skb,
1423 struct rtllib_rx_stats *rx_stats)
1425 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1426 u16 fc = le16_to_cpu(hdr->frame_ctl);
1427 size_t hdrlen = rtllib_get_hdrlen(fc);
1429 if (skb->len < hdrlen) {
1430 netdev_info(ieee->dev,
1431 "%s():ERR!!! skb->len is smaller than hdrlen\n",
1436 if (HTCCheck(ieee, skb->data)) {
1437 if (net_ratelimit())
1438 netdev_info(ieee->dev, "%s: Find HTCControl!\n",
1443 rtllib_monitor_rx(ieee, skb, rx_stats, hdrlen);
1444 ieee->stats.rx_packets++;
1445 ieee->stats.rx_bytes += skb->len;
1450 static int rtllib_rx_Mesh(struct rtllib_device *ieee, struct sk_buff *skb,
1451 struct rtllib_rx_stats *rx_stats)
1456 /* All received frames are sent to this function. @skb contains the frame in
1457 * IEEE 802.11 format, i.e., in the format it was sent over air.
1458 * 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 pr_info("%s: Input parameters NULL!\n", __func__);
1469 if (skb->len < 10) {
1470 netdev_info(ieee->dev, "%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 netdev_info(ieee->dev, "%s: ERR iw mode!!!\n", __func__);
1498 ieee->stats.rx_dropped++;
1501 EXPORT_SYMBOL(rtllib_rx);
1503 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1505 /* Make ther structure we read from the beacon packet has the right values */
1506 static int rtllib_verify_qos_info(struct rtllib_qos_information_element
1507 *info_element, int sub_type)
1510 if (info_element->qui_subtype != sub_type)
1512 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1514 if (info_element->qui_type != QOS_OUI_TYPE)
1516 if (info_element->version != QOS_VERSION_1)
1523 /* Parse a QoS parameter element */
1524 static int rtllib_read_qos_param_element(struct rtllib_qos_parameter_info
1525 *element_param, struct rtllib_info_element
1529 u16 size = sizeof(struct rtllib_qos_parameter_info) - 2;
1531 if ((info_element == NULL) || (element_param == NULL))
1534 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1535 memcpy(element_param->info_element.qui, info_element->data,
1537 element_param->info_element.elementID = info_element->id;
1538 element_param->info_element.length = info_element->len;
1542 ret = rtllib_verify_qos_info(&element_param->info_element,
1543 QOS_OUI_PARAM_SUB_TYPE);
1547 /* Parse a QoS information element */
1548 static int rtllib_read_qos_info_element(struct
1549 rtllib_qos_information_element
1550 *element_info, struct rtllib_info_element
1554 u16 size = sizeof(struct rtllib_qos_information_element) - 2;
1556 if (element_info == NULL)
1558 if (info_element == NULL)
1561 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1562 memcpy(element_info->qui, info_element->data,
1564 element_info->elementID = info_element->id;
1565 element_info->length = info_element->len;
1570 ret = rtllib_verify_qos_info(element_info,
1571 QOS_OUI_INFO_SUB_TYPE);
1576 /* Write QoS parameters from the ac parameters. */
1577 static int rtllib_qos_convert_ac_to_parameters(struct rtllib_qos_parameter_info *param_elm,
1578 struct rtllib_qos_data *qos_data)
1580 struct rtllib_qos_ac_parameter *ac_params;
1581 struct rtllib_qos_parameters *qos_param = &(qos_data->parameters);
1586 qos_data->wmm_acm = 0;
1587 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1588 ac_params = &(param_elm->ac_params_record[i]);
1590 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1591 acm = (ac_params->aci_aifsn & 0x10) >> 4;
1593 if (aci >= QOS_QUEUE_NUM)
1597 /* BIT(0) | BIT(3) */
1599 qos_data->wmm_acm |= (0x01<<0)|(0x01<<3);
1602 /* BIT(4) | BIT(5) */
1604 qos_data->wmm_acm |= (0x01<<4)|(0x01<<5);
1607 /* BIT(6) | BIT(7) */
1609 qos_data->wmm_acm |= (0x01<<6)|(0x01<<7);
1613 /* BIT(1) | BIT(2) */
1615 qos_data->wmm_acm |= (0x01<<1)|(0x01<<2);
1619 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1621 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1622 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2 : qos_param->aifs[aci];
1624 qos_param->cw_min[aci] = cpu_to_le16(ac_params->ecw_min_max & 0x0F);
1626 qos_param->cw_max[aci] = cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4);
1628 qos_param->flag[aci] =
1629 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1630 qos_param->tx_op_limit[aci] = ac_params->tx_op_limit;
1635 /* we have a generic data element which it may contain QoS information or
1636 * parameters element. check the information element length to decide
1637 * which type to read
1639 static int rtllib_parse_qos_info_param_IE(struct rtllib_info_element
1641 struct rtllib_network *network)
1644 struct rtllib_qos_information_element qos_info_element;
1646 rc = rtllib_read_qos_info_element(&qos_info_element, info_element);
1649 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1650 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1652 struct rtllib_qos_parameter_info param_element;
1654 rc = rtllib_read_qos_param_element(¶m_element,
1657 rtllib_qos_convert_ac_to_parameters(¶m_element,
1658 &(network->qos_data));
1659 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1660 network->qos_data.param_count =
1661 param_element.info_element.ac_info & 0x0F;
1666 RTLLIB_DEBUG_QOS("QoS is supported\n");
1667 network->qos_data.supported = 1;
1672 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1674 static const char *get_info_element_string(u16 id)
1679 MFIE_STRING(FH_SET);
1680 MFIE_STRING(DS_SET);
1681 MFIE_STRING(CF_SET);
1683 MFIE_STRING(IBSS_SET);
1684 MFIE_STRING(COUNTRY);
1685 MFIE_STRING(HOP_PARAMS);
1686 MFIE_STRING(HOP_TABLE);
1687 MFIE_STRING(REQUEST);
1688 MFIE_STRING(CHALLENGE);
1689 MFIE_STRING(POWER_CONSTRAINT);
1690 MFIE_STRING(POWER_CAPABILITY);
1691 MFIE_STRING(TPC_REQUEST);
1692 MFIE_STRING(TPC_REPORT);
1693 MFIE_STRING(SUPP_CHANNELS);
1695 MFIE_STRING(MEASURE_REQUEST);
1696 MFIE_STRING(MEASURE_REPORT);
1698 MFIE_STRING(IBSS_DFS);
1700 MFIE_STRING(RATES_EX);
1701 MFIE_STRING(GENERIC);
1702 MFIE_STRING(QOS_PARAMETER);
1708 static inline void rtllib_extract_country_ie(
1709 struct rtllib_device *ieee,
1710 struct rtllib_info_element *info_element,
1711 struct rtllib_network *network,
1714 if (IS_DOT11D_ENABLE(ieee)) {
1715 if (info_element->len != 0) {
1716 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1717 network->CountryIeLen = info_element->len;
1719 if (!IS_COUNTRY_IE_VALID(ieee)) {
1720 if (rtllib_act_scanning(ieee, false) && ieee->FirstIe_InScan)
1721 netdev_info(ieee->dev,
1722 "Received beacon ContryIE, SSID: <%s>\n",
1724 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1728 if (IS_EQUAL_CIE_SRC(ieee, addr2))
1729 UPDATE_CIE_WATCHDOG(ieee);
1734 int rtllib_parse_info_param(struct rtllib_device *ieee,
1735 struct rtllib_info_element *info_element,
1737 struct rtllib_network *network,
1738 struct rtllib_rx_stats *stats)
1742 u16 tmp_htcap_len = 0;
1743 u16 tmp_htinfo_len = 0;
1744 u16 ht_realtek_agg_len = 0;
1745 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1749 while (length >= sizeof(*info_element)) {
1750 if (sizeof(*info_element) + info_element->len > length) {
1751 RTLLIB_DEBUG_MGMT("Info elem: parse failed: info_element->len + 2 > left : info_element->len+2=%zd left=%d, id=%d.\n",
1753 sizeof(*info_element),
1754 length, info_element->id);
1755 /* We stop processing but don't return an error here
1756 * because some misbehaviour APs break this rule. ie.
1762 switch (info_element->id) {
1763 case MFIE_TYPE_SSID:
1764 if (rtllib_is_empty_essid(info_element->data,
1765 info_element->len)) {
1766 network->flags |= NETWORK_EMPTY_ESSID;
1770 network->ssid_len = min(info_element->len,
1771 (u8) IW_ESSID_MAX_SIZE);
1772 memcpy(network->ssid, info_element->data, network->ssid_len);
1773 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1774 memset(network->ssid + network->ssid_len, 0,
1775 IW_ESSID_MAX_SIZE - network->ssid_len);
1777 RTLLIB_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1778 network->ssid, network->ssid_len);
1781 case MFIE_TYPE_RATES:
1783 network->rates_len = min(info_element->len,
1785 for (i = 0; i < network->rates_len; i++) {
1786 network->rates[i] = info_element->data[i];
1787 p += snprintf(p, sizeof(rates_str) -
1788 (p - rates_str), "%02X ",
1790 if (rtllib_is_ofdm_rate
1791 (info_element->data[i])) {
1792 network->flags |= NETWORK_HAS_OFDM;
1793 if (info_element->data[i] &
1794 RTLLIB_BASIC_RATE_MASK)
1799 if (rtllib_is_cck_rate
1800 (info_element->data[i])) {
1801 network->flags |= NETWORK_HAS_CCK;
1805 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1806 rates_str, network->rates_len);
1809 case MFIE_TYPE_RATES_EX:
1811 network->rates_ex_len = min(info_element->len,
1812 MAX_RATES_EX_LENGTH);
1813 for (i = 0; i < network->rates_ex_len; i++) {
1814 network->rates_ex[i] = info_element->data[i];
1815 p += snprintf(p, sizeof(rates_str) -
1816 (p - rates_str), "%02X ",
1817 network->rates_ex[i]);
1818 if (rtllib_is_ofdm_rate
1819 (info_element->data[i])) {
1820 network->flags |= NETWORK_HAS_OFDM;
1821 if (info_element->data[i] &
1822 RTLLIB_BASIC_RATE_MASK)
1828 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1829 rates_str, network->rates_ex_len);
1832 case MFIE_TYPE_DS_SET:
1833 RTLLIB_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1834 info_element->data[0]);
1835 network->channel = info_element->data[0];
1838 case MFIE_TYPE_FH_SET:
1839 RTLLIB_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1842 case MFIE_TYPE_CF_SET:
1843 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1847 if (info_element->len < 4)
1850 network->tim.tim_count = info_element->data[0];
1851 network->tim.tim_period = info_element->data[1];
1853 network->dtim_period = info_element->data[1];
1854 if (ieee->state != RTLLIB_LINKED)
1856 network->last_dtim_sta_time = jiffies;
1858 network->dtim_data = RTLLIB_DTIM_VALID;
1861 if (info_element->data[2] & 1)
1862 network->dtim_data |= RTLLIB_DTIM_MBCAST;
1864 offset = (info_element->data[2] >> 1)*2;
1867 if (ieee->assoc_id < 8*offset ||
1868 ieee->assoc_id > 8*(offset + info_element->len - 3))
1871 offset = (ieee->assoc_id / 8) - offset;
1872 if (info_element->data[3 + offset] &
1873 (1 << (ieee->assoc_id % 8)))
1874 network->dtim_data |= RTLLIB_DTIM_UCAST;
1876 network->listen_interval = network->dtim_period;
1880 network->erp_value = info_element->data[0];
1881 network->flags |= NETWORK_HAS_ERP_VALUE;
1882 RTLLIB_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1883 network->erp_value);
1885 case MFIE_TYPE_IBSS_SET:
1886 network->atim_window = info_element->data[0];
1887 RTLLIB_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1888 network->atim_window);
1891 case MFIE_TYPE_CHALLENGE:
1892 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1895 case MFIE_TYPE_GENERIC:
1896 RTLLIB_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1898 if (!rtllib_parse_qos_info_param_IE(info_element,
1901 if (info_element->len >= 4 &&
1902 info_element->data[0] == 0x00 &&
1903 info_element->data[1] == 0x50 &&
1904 info_element->data[2] == 0xf2 &&
1905 info_element->data[3] == 0x01) {
1906 network->wpa_ie_len = min(info_element->len + 2,
1908 memcpy(network->wpa_ie, info_element,
1909 network->wpa_ie_len);
1912 if (info_element->len == 7 &&
1913 info_element->data[0] == 0x00 &&
1914 info_element->data[1] == 0xe0 &&
1915 info_element->data[2] == 0x4c &&
1916 info_element->data[3] == 0x01 &&
1917 info_element->data[4] == 0x02)
1918 network->Turbo_Enable = 1;
1920 if (tmp_htcap_len == 0) {
1921 if (info_element->len >= 4 &&
1922 info_element->data[0] == 0x00 &&
1923 info_element->data[1] == 0x90 &&
1924 info_element->data[2] == 0x4c &&
1925 info_element->data[3] == 0x033) {
1927 tmp_htcap_len = min_t(u8, info_element->len, MAX_IE_LEN);
1928 if (tmp_htcap_len != 0) {
1929 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1930 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
1931 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
1932 memcpy(network->bssht.bdHTCapBuf, info_element->data, network->bssht.bdHTCapLen);
1935 if (tmp_htcap_len != 0) {
1936 network->bssht.bdSupportHT = true;
1937 network->bssht.bdHT1R = ((((struct ht_capab_ele *)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1939 network->bssht.bdSupportHT = false;
1940 network->bssht.bdHT1R = false;
1945 if (tmp_htinfo_len == 0) {
1946 if (info_element->len >= 4 &&
1947 info_element->data[0] == 0x00 &&
1948 info_element->data[1] == 0x90 &&
1949 info_element->data[2] == 0x4c &&
1950 info_element->data[3] == 0x034) {
1951 tmp_htinfo_len = min_t(u8, info_element->len, MAX_IE_LEN);
1952 if (tmp_htinfo_len != 0) {
1953 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1954 if (tmp_htinfo_len) {
1955 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf) ?
1956 sizeof(network->bssht.bdHTInfoBuf) : tmp_htinfo_len;
1957 memcpy(network->bssht.bdHTInfoBuf, info_element->data, network->bssht.bdHTInfoLen);
1965 if (ieee->aggregation) {
1966 if (network->bssht.bdSupportHT) {
1967 if (info_element->len >= 4 &&
1968 info_element->data[0] == 0x00 &&
1969 info_element->data[1] == 0xe0 &&
1970 info_element->data[2] == 0x4c &&
1971 info_element->data[3] == 0x02) {
1972 ht_realtek_agg_len = min_t(u8, info_element->len, MAX_IE_LEN);
1973 memcpy(ht_realtek_agg_buf, info_element->data, info_element->len);
1975 if (ht_realtek_agg_len >= 5) {
1976 network->realtek_cap_exit = true;
1977 network->bssht.bdRT2RTAggregation = true;
1979 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1980 network->bssht.bdRT2RTLongSlotTime = true;
1982 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE))
1983 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE;
1986 if (ht_realtek_agg_len >= 5) {
1987 if ((ht_realtek_agg_buf[5] & RT_HT_CAP_USE_SOFTAP))
1988 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_SOFTAP;
1992 if ((info_element->len >= 3 &&
1993 info_element->data[0] == 0x00 &&
1994 info_element->data[1] == 0x05 &&
1995 info_element->data[2] == 0xb5) ||
1996 (info_element->len >= 3 &&
1997 info_element->data[0] == 0x00 &&
1998 info_element->data[1] == 0x0a &&
1999 info_element->data[2] == 0xf7) ||
2000 (info_element->len >= 3 &&
2001 info_element->data[0] == 0x00 &&
2002 info_element->data[1] == 0x10 &&
2003 info_element->data[2] == 0x18)) {
2004 network->broadcom_cap_exist = true;
2006 if (info_element->len >= 3 &&
2007 info_element->data[0] == 0x00 &&
2008 info_element->data[1] == 0x0c &&
2009 info_element->data[2] == 0x43)
2010 network->ralink_cap_exist = true;
2011 if ((info_element->len >= 3 &&
2012 info_element->data[0] == 0x00 &&
2013 info_element->data[1] == 0x03 &&
2014 info_element->data[2] == 0x7f) ||
2015 (info_element->len >= 3 &&
2016 info_element->data[0] == 0x00 &&
2017 info_element->data[1] == 0x13 &&
2018 info_element->data[2] == 0x74))
2019 network->atheros_cap_exist = true;
2021 if ((info_element->len >= 3 &&
2022 info_element->data[0] == 0x00 &&
2023 info_element->data[1] == 0x50 &&
2024 info_element->data[2] == 0x43))
2025 network->marvell_cap_exist = true;
2026 if (info_element->len >= 3 &&
2027 info_element->data[0] == 0x00 &&
2028 info_element->data[1] == 0x40 &&
2029 info_element->data[2] == 0x96)
2030 network->cisco_cap_exist = true;
2033 if (info_element->len >= 3 &&
2034 info_element->data[0] == 0x00 &&
2035 info_element->data[1] == 0x0a &&
2036 info_element->data[2] == 0xf5)
2037 network->airgo_cap_exist = true;
2039 if (info_element->len > 4 &&
2040 info_element->data[0] == 0x00 &&
2041 info_element->data[1] == 0x40 &&
2042 info_element->data[2] == 0x96 &&
2043 info_element->data[3] == 0x01) {
2044 if (info_element->len == 6) {
2045 memcpy(network->CcxRmState, &info_element[4], 2);
2046 if (network->CcxRmState[0] != 0)
2047 network->bCcxRmEnable = true;
2049 network->bCcxRmEnable = false;
2050 network->MBssidMask = network->CcxRmState[1] & 0x07;
2051 if (network->MBssidMask != 0) {
2052 network->bMBssidValid = true;
2053 network->MBssidMask = 0xff << (network->MBssidMask);
2054 memcpy(network->MBssid, network->bssid, ETH_ALEN);
2055 network->MBssid[5] &= network->MBssidMask;
2057 network->bMBssidValid = false;
2060 network->bCcxRmEnable = false;
2063 if (info_element->len > 4 &&
2064 info_element->data[0] == 0x00 &&
2065 info_element->data[1] == 0x40 &&
2066 info_element->data[2] == 0x96 &&
2067 info_element->data[3] == 0x03) {
2068 if (info_element->len == 5) {
2069 network->bWithCcxVerNum = true;
2070 network->BssCcxVerNumber = info_element->data[4];
2072 network->bWithCcxVerNum = false;
2073 network->BssCcxVerNumber = 0;
2076 if (info_element->len > 4 &&
2077 info_element->data[0] == 0x00 &&
2078 info_element->data[1] == 0x50 &&
2079 info_element->data[2] == 0xf2 &&
2080 info_element->data[3] == 0x04) {
2081 RTLLIB_DEBUG_MGMT("MFIE_TYPE_WZC: %d bytes\n",
2083 network->wzc_ie_len = min(info_element->len+2,
2085 memcpy(network->wzc_ie, info_element,
2086 network->wzc_ie_len);
2091 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2093 network->rsn_ie_len = min(info_element->len + 2,
2095 memcpy(network->rsn_ie, info_element,
2096 network->rsn_ie_len);
2099 case MFIE_TYPE_HT_CAP:
2100 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2102 tmp_htcap_len = min_t(u8, info_element->len, MAX_IE_LEN);
2103 if (tmp_htcap_len != 0) {
2104 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2105 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
2106 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
2107 memcpy(network->bssht.bdHTCapBuf,
2109 network->bssht.bdHTCapLen);
2111 network->bssht.bdSupportHT = true;
2112 network->bssht.bdHT1R = ((((struct ht_capab_ele *)
2113 network->bssht.bdHTCapBuf))->MCS[1]) == 0;
2115 network->bssht.bdBandWidth = (enum ht_channel_width)
2116 (((struct ht_capab_ele *)
2117 (network->bssht.bdHTCapBuf))->ChlWidth);
2119 network->bssht.bdSupportHT = false;
2120 network->bssht.bdHT1R = false;
2121 network->bssht.bdBandWidth = HT_CHANNEL_WIDTH_20;
2126 case MFIE_TYPE_HT_INFO:
2127 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2129 tmp_htinfo_len = min_t(u8, info_element->len, MAX_IE_LEN);
2130 if (tmp_htinfo_len) {
2131 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2132 network->bssht.bdHTInfoLen = tmp_htinfo_len >
2133 sizeof(network->bssht.bdHTInfoBuf) ?
2134 sizeof(network->bssht.bdHTInfoBuf) :
2136 memcpy(network->bssht.bdHTInfoBuf,
2138 network->bssht.bdHTInfoLen);
2142 case MFIE_TYPE_AIRONET:
2143 RTLLIB_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2145 if (info_element->len > IE_CISCO_FLAG_POSITION) {
2146 network->bWithAironetIE = true;
2148 if ((info_element->data[IE_CISCO_FLAG_POSITION]
2149 & SUPPORT_CKIP_MIC) ||
2150 (info_element->data[IE_CISCO_FLAG_POSITION]
2152 network->bCkipSupported = true;
2154 network->bCkipSupported = false;
2156 network->bWithAironetIE = false;
2157 network->bCkipSupported = false;
2160 case MFIE_TYPE_QOS_PARAMETER:
2161 netdev_err(ieee->dev,
2162 "QoS Error need to parse QOS_PARAMETER IE\n");
2165 case MFIE_TYPE_COUNTRY:
2166 RTLLIB_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2168 rtllib_extract_country_ie(ieee, info_element, network,
2174 ("Unsupported info element: %s (%d)\n",
2175 get_info_element_string(info_element->id),
2180 length -= sizeof(*info_element) + info_element->len;
2182 (struct rtllib_info_element *)&info_element->
2183 data[info_element->len];
2186 if (!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2187 !network->cisco_cap_exist && !network->ralink_cap_exist &&
2188 !network->bssht.bdRT2RTAggregation)
2189 network->unknown_cap_exist = true;
2191 network->unknown_cap_exist = false;
2195 static long rtllib_translate_todbm(u8 signal_strength_index)
2199 signal_power = (long)((signal_strength_index + 1) >> 1);
2202 return signal_power;
2205 static inline int rtllib_network_init(
2206 struct rtllib_device *ieee,
2207 struct rtllib_probe_response *beacon,
2208 struct rtllib_network *network,
2209 struct rtllib_rx_stats *stats)
2211 memset(&network->qos_data, 0, sizeof(struct rtllib_qos_data));
2213 /* Pull out fixed field data */
2214 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2215 network->capability = le16_to_cpu(beacon->capability);
2216 network->last_scanned = jiffies;
2217 network->time_stamp[0] = beacon->time_stamp[0];
2218 network->time_stamp[1] = beacon->time_stamp[1];
2219 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
2220 /* Where to pull this? beacon->listen_interval;*/
2221 network->listen_interval = 0x0A;
2222 network->rates_len = network->rates_ex_len = 0;
2223 network->last_associate = 0;
2224 network->ssid_len = 0;
2225 network->hidden_ssid_len = 0;
2226 memset(network->hidden_ssid, 0, sizeof(network->hidden_ssid));
2228 network->atim_window = 0;
2229 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2231 network->berp_info_valid = false;
2232 network->broadcom_cap_exist = false;
2233 network->ralink_cap_exist = false;
2234 network->atheros_cap_exist = false;
2235 network->cisco_cap_exist = false;
2236 network->unknown_cap_exist = false;
2237 network->realtek_cap_exit = false;
2238 network->marvell_cap_exist = false;
2239 network->airgo_cap_exist = false;
2240 network->Turbo_Enable = 0;
2241 network->SignalStrength = stats->SignalStrength;
2242 network->RSSI = stats->SignalStrength;
2243 network->CountryIeLen = 0;
2244 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2245 HTInitializeBssDesc(&network->bssht);
2246 if (stats->freq == RTLLIB_52GHZ_BAND) {
2247 /* for A band (No DS info) */
2248 network->channel = stats->received_channel;
2250 network->flags |= NETWORK_HAS_CCK;
2252 network->wpa_ie_len = 0;
2253 network->rsn_ie_len = 0;
2254 network->wzc_ie_len = 0;
2256 if (rtllib_parse_info_param(ieee,
2257 beacon->info_element,
2258 (stats->len - sizeof(*beacon)),
2264 if (stats->freq == RTLLIB_52GHZ_BAND)
2265 network->mode = IEEE_A;
2267 if (network->flags & NETWORK_HAS_OFDM)
2268 network->mode |= IEEE_G;
2269 if (network->flags & NETWORK_HAS_CCK)
2270 network->mode |= IEEE_B;
2273 if (network->mode == 0) {
2274 RTLLIB_DEBUG_SCAN("Filtered out '%s (%pM)' network.\n",
2275 escape_essid(network->ssid,
2281 if (network->bssht.bdSupportHT) {
2282 if (network->mode == IEEE_A)
2283 network->mode = IEEE_N_5G;
2284 else if (network->mode & (IEEE_G | IEEE_B))
2285 network->mode = IEEE_N_24G;
2287 if (rtllib_is_empty_essid(network->ssid, network->ssid_len))
2288 network->flags |= NETWORK_EMPTY_ESSID;
2289 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2290 stats->noise = rtllib_translate_todbm((u8)(100-stats->signal)) - 25;
2292 memcpy(&network->stats, stats, sizeof(network->stats));
2297 static inline int is_same_network(struct rtllib_network *src,
2298 struct rtllib_network *dst, u8 ssidbroad)
2300 /* A network is only a duplicate if the channel, BSSID, ESSID
2301 * and the capability field (in particular IBSS and BSS) all match.
2302 * We treat all <hidden> with the same BSSID and channel
2305 return (((src->ssid_len == dst->ssid_len) || (!ssidbroad)) &&
2306 (src->channel == dst->channel) &&
2307 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2308 (!memcmp(src->ssid, dst->ssid, src->ssid_len) ||
2310 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2311 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2312 ((src->capability & WLAN_CAPABILITY_ESS) ==
2313 (dst->capability & WLAN_CAPABILITY_ESS)));
2317 static inline void update_network(struct rtllib_network *dst,
2318 struct rtllib_network *src)
2323 memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
2324 dst->capability = src->capability;
2325 memcpy(dst->rates, src->rates, src->rates_len);
2326 dst->rates_len = src->rates_len;
2327 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2328 dst->rates_ex_len = src->rates_ex_len;
2329 if (src->ssid_len > 0) {
2330 if (dst->ssid_len == 0) {
2331 memset(dst->hidden_ssid, 0, sizeof(dst->hidden_ssid));
2332 dst->hidden_ssid_len = src->ssid_len;
2333 memcpy(dst->hidden_ssid, src->ssid, src->ssid_len);
2335 memset(dst->ssid, 0, dst->ssid_len);
2336 dst->ssid_len = src->ssid_len;
2337 memcpy(dst->ssid, src->ssid, src->ssid_len);
2340 dst->mode = src->mode;
2341 dst->flags = src->flags;
2342 dst->time_stamp[0] = src->time_stamp[0];
2343 dst->time_stamp[1] = src->time_stamp[1];
2344 if (src->flags & NETWORK_HAS_ERP_VALUE) {
2345 dst->erp_value = src->erp_value;
2346 dst->berp_info_valid = src->berp_info_valid = true;
2348 dst->beacon_interval = src->beacon_interval;
2349 dst->listen_interval = src->listen_interval;
2350 dst->atim_window = src->atim_window;
2351 dst->dtim_period = src->dtim_period;
2352 dst->dtim_data = src->dtim_data;
2353 dst->last_dtim_sta_time = src->last_dtim_sta_time;
2354 memcpy(&dst->tim, &src->tim, sizeof(struct rtllib_tim_parameters));
2356 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2357 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2358 dst->bssht.bdHTCapLen = src->bssht.bdHTCapLen;
2359 memcpy(dst->bssht.bdHTCapBuf, src->bssht.bdHTCapBuf,
2360 src->bssht.bdHTCapLen);
2361 dst->bssht.bdHTInfoLen = src->bssht.bdHTInfoLen;
2362 memcpy(dst->bssht.bdHTInfoBuf, src->bssht.bdHTInfoBuf,
2363 src->bssht.bdHTInfoLen);
2364 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2365 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2366 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2367 dst->ralink_cap_exist = src->ralink_cap_exist;
2368 dst->atheros_cap_exist = src->atheros_cap_exist;
2369 dst->realtek_cap_exit = src->realtek_cap_exit;
2370 dst->marvell_cap_exist = src->marvell_cap_exist;
2371 dst->cisco_cap_exist = src->cisco_cap_exist;
2372 dst->airgo_cap_exist = src->airgo_cap_exist;
2373 dst->unknown_cap_exist = src->unknown_cap_exist;
2374 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2375 dst->wpa_ie_len = src->wpa_ie_len;
2376 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2377 dst->rsn_ie_len = src->rsn_ie_len;
2378 memcpy(dst->wzc_ie, src->wzc_ie, src->wzc_ie_len);
2379 dst->wzc_ie_len = src->wzc_ie_len;
2381 dst->last_scanned = jiffies;
2382 /* qos related parameters */
2383 qos_active = dst->qos_data.active;
2384 old_param = dst->qos_data.param_count;
2385 dst->qos_data.supported = src->qos_data.supported;
2386 if (dst->flags & NETWORK_HAS_QOS_PARAMETERS)
2387 memcpy(&dst->qos_data, &src->qos_data,
2388 sizeof(struct rtllib_qos_data));
2389 if (dst->qos_data.supported == 1) {
2392 ("QoS the network %s is QoS supported\n",
2396 ("QoS the network is QoS supported\n");
2398 dst->qos_data.active = qos_active;
2399 dst->qos_data.old_param_count = old_param;
2401 /* dst->last_associate is not overwritten */
2402 dst->wmm_info = src->wmm_info;
2403 if (src->wmm_param[0].ac_aci_acm_aifsn ||
2404 src->wmm_param[1].ac_aci_acm_aifsn ||
2405 src->wmm_param[2].ac_aci_acm_aifsn ||
2406 src->wmm_param[3].ac_aci_acm_aifsn)
2407 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2409 dst->SignalStrength = src->SignalStrength;
2410 dst->RSSI = src->RSSI;
2411 dst->Turbo_Enable = src->Turbo_Enable;
2413 dst->CountryIeLen = src->CountryIeLen;
2414 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2416 dst->bWithAironetIE = src->bWithAironetIE;
2417 dst->bCkipSupported = src->bCkipSupported;
2418 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2419 dst->bCcxRmEnable = src->bCcxRmEnable;
2420 dst->MBssidMask = src->MBssidMask;
2421 dst->bMBssidValid = src->bMBssidValid;
2422 memcpy(dst->MBssid, src->MBssid, 6);
2423 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2424 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2427 static inline int is_beacon(__le16 fc)
2429 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == RTLLIB_STYPE_BEACON);
2432 static int IsPassiveChannel(struct rtllib_device *rtllib, u8 channel)
2434 if (MAX_CHANNEL_NUMBER < channel) {
2435 netdev_info(rtllib->dev, "%s(): Invalid Channel\n", __func__);
2439 if (rtllib->active_channel_map[channel] == 2)
2445 int rtllib_legal_channel(struct rtllib_device *rtllib, u8 channel)
2447 if (MAX_CHANNEL_NUMBER < channel) {
2448 netdev_info(rtllib->dev, "%s(): Invalid Channel\n", __func__);
2451 if (rtllib->active_channel_map[channel] > 0)
2456 EXPORT_SYMBOL(rtllib_legal_channel);
2458 static inline void rtllib_process_probe_response(
2459 struct rtllib_device *ieee,
2460 struct rtllib_probe_response *beacon,
2461 struct rtllib_rx_stats *stats)
2463 struct rtllib_network *target;
2464 struct rtllib_network *oldest = NULL;
2465 struct rtllib_info_element *info_element = &beacon->info_element[0];
2466 unsigned long flags;
2468 struct rtllib_network *network = kzalloc(sizeof(struct rtllib_network),
2475 "'%s' ( %pM ): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2476 escape_essid(info_element->data, info_element->len),
2477 beacon->header.addr3,
2478 (le16_to_cpu(beacon->capability) & (1<<0xf)) ? '1' : '0',
2479 (le16_to_cpu(beacon->capability) & (1<<0xe)) ? '1' : '0',
2480 (le16_to_cpu(beacon->capability) & (1<<0xd)) ? '1' : '0',
2481 (le16_to_cpu(beacon->capability) & (1<<0xc)) ? '1' : '0',
2482 (le16_to_cpu(beacon->capability) & (1<<0xb)) ? '1' : '0',
2483 (le16_to_cpu(beacon->capability) & (1<<0xa)) ? '1' : '0',
2484 (le16_to_cpu(beacon->capability) & (1<<0x9)) ? '1' : '0',
2485 (le16_to_cpu(beacon->capability) & (1<<0x8)) ? '1' : '0',
2486 (le16_to_cpu(beacon->capability) & (1<<0x7)) ? '1' : '0',
2487 (le16_to_cpu(beacon->capability) & (1<<0x6)) ? '1' : '0',
2488 (le16_to_cpu(beacon->capability) & (1<<0x5)) ? '1' : '0',
2489 (le16_to_cpu(beacon->capability) & (1<<0x4)) ? '1' : '0',
2490 (le16_to_cpu(beacon->capability) & (1<<0x3)) ? '1' : '0',
2491 (le16_to_cpu(beacon->capability) & (1<<0x2)) ? '1' : '0',
2492 (le16_to_cpu(beacon->capability) & (1<<0x1)) ? '1' : '0',
2493 (le16_to_cpu(beacon->capability) & (1<<0x0)) ? '1' : '0');
2495 if (rtllib_network_init(ieee, beacon, network, stats)) {
2496 RTLLIB_DEBUG_SCAN("Dropped '%s' ( %pM) via %s.\n",
2497 escape_essid(info_element->data,
2499 beacon->header.addr3,
2501 le16_to_cpu(beacon->header.frame_ctl)) ==
2502 RTLLIB_STYPE_PROBE_RESP ?
2503 "PROBE RESPONSE" : "BEACON");
2508 if (!rtllib_legal_channel(ieee, network->channel))
2511 if (WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl)) ==
2512 RTLLIB_STYPE_PROBE_RESP) {
2513 if (IsPassiveChannel(ieee, network->channel)) {
2514 netdev_info(ieee->dev,
2515 "GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n",
2521 /* The network parsed correctly -- so now we scan our known networks
2522 * to see if we can find it in our list.
2524 * NOTE: This search is definitely not optimized. Once its doing
2525 * the "right thing" we'll optimize it for efficiency if
2529 /* Search for this entry in the list and update it if it is
2533 spin_lock_irqsave(&ieee->lock, flags);
2534 if (is_same_network(&ieee->current_network, network,
2535 (network->ssid_len ? 1 : 0))) {
2536 update_network(&ieee->current_network, network);
2537 if ((ieee->current_network.mode == IEEE_N_24G ||
2538 ieee->current_network.mode == IEEE_G)
2539 && ieee->current_network.berp_info_valid) {
2540 if (ieee->current_network.erp_value & ERP_UseProtection)
2541 ieee->current_network.buseprotection = true;
2543 ieee->current_network.buseprotection = false;
2545 if (is_beacon(beacon->header.frame_ctl)) {
2546 if (ieee->state >= RTLLIB_LINKED)
2547 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2550 list_for_each_entry(target, &ieee->network_list, list) {
2551 if (is_same_network(target, network,
2552 (target->ssid_len ? 1 : 0)))
2554 if ((oldest == NULL) ||
2555 (target->last_scanned < oldest->last_scanned))
2559 /* If we didn't find a match, then get a new network slot to initialize
2560 * with this beacon's information
2562 if (&target->list == &ieee->network_list) {
2563 if (list_empty(&ieee->network_free_list)) {
2564 /* If there are no more slots, expire the oldest */
2565 list_del(&oldest->list);
2567 RTLLIB_DEBUG_SCAN("Expired '%s' ( %pM) from network list.\n",
2568 escape_essid(target->ssid,
2572 /* Otherwise just pull from the free list */
2573 target = list_entry(ieee->network_free_list.next,
2574 struct rtllib_network, list);
2575 list_del(ieee->network_free_list.next);
2579 RTLLIB_DEBUG_SCAN("Adding '%s' ( %pM) via %s.\n",
2580 escape_essid(network->ssid,
2581 network->ssid_len), network->bssid,
2583 le16_to_cpu(beacon->header.frame_ctl)) ==
2584 RTLLIB_STYPE_PROBE_RESP ?
2585 "PROBE RESPONSE" : "BEACON");
2586 memcpy(target, network, sizeof(*target));
2587 list_add_tail(&target->list, &ieee->network_list);
2588 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2589 rtllib_softmac_new_net(ieee, network);
2591 RTLLIB_DEBUG_SCAN("Updating '%s' ( %pM) via %s.\n",
2592 escape_essid(target->ssid,
2593 target->ssid_len), target->bssid,
2595 le16_to_cpu(beacon->header.frame_ctl)) ==
2596 RTLLIB_STYPE_PROBE_RESP ?
2597 "PROBE RESPONSE" : "BEACON");
2599 /* we have an entry and we are going to update it. But this
2600 * entry may be already expired. In this case we do the same
2601 * as we found a new net and call the new_net handler
2603 renew = !time_after(target->last_scanned + ieee->scan_age,
2605 if ((!target->ssid_len) &&
2606 (((network->ssid_len > 0) && (target->hidden_ssid_len == 0))
2607 || ((ieee->current_network.ssid_len == network->ssid_len) &&
2608 (strncmp(ieee->current_network.ssid, network->ssid,
2609 network->ssid_len) == 0) &&
2610 (ieee->state == RTLLIB_NOLINK))))
2612 update_network(target, network);
2613 if (renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2614 rtllib_softmac_new_net(ieee, network);
2617 spin_unlock_irqrestore(&ieee->lock, flags);
2618 if (is_beacon(beacon->header.frame_ctl) &&
2619 is_same_network(&ieee->current_network, network,
2620 (network->ssid_len ? 1 : 0)) &&
2621 (ieee->state == RTLLIB_LINKED)) {
2622 if (ieee->handle_beacon != NULL)
2623 ieee->handle_beacon(ieee->dev, beacon,
2624 &ieee->current_network);
2630 void rtllib_rx_mgt(struct rtllib_device *ieee,
2631 struct sk_buff *skb,
2632 struct rtllib_rx_stats *stats)
2634 struct rtllib_hdr_4addr *header = (struct rtllib_hdr_4addr *)skb->data;
2636 if ((WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)) !=
2637 RTLLIB_STYPE_PROBE_RESP) &&
2638 (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)) !=
2639 RTLLIB_STYPE_BEACON))
2640 ieee->last_rx_ps_time = jiffies;
2642 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
2644 case RTLLIB_STYPE_BEACON:
2645 RTLLIB_DEBUG_MGMT("received BEACON (%d)\n",
2646 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2647 RTLLIB_DEBUG_SCAN("Beacon\n");
2648 rtllib_process_probe_response(
2649 ieee, (struct rtllib_probe_response *)header,
2652 if (ieee->sta_sleep || (ieee->ps != RTLLIB_PS_DISABLED &&
2653 ieee->iw_mode == IW_MODE_INFRA &&
2654 ieee->state == RTLLIB_LINKED))
2655 tasklet_schedule(&ieee->ps_task);
2659 case RTLLIB_STYPE_PROBE_RESP:
2660 RTLLIB_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2661 WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl)));
2662 RTLLIB_DEBUG_SCAN("Probe response\n");
2663 rtllib_process_probe_response(ieee,
2664 (struct rtllib_probe_response *)header, stats);
2666 case RTLLIB_STYPE_PROBE_REQ:
2667 RTLLIB_DEBUG_MGMT("received PROBE RESQUEST (%d)\n",
2669 le16_to_cpu(header->frame_ctl)));
2670 RTLLIB_DEBUG_SCAN("Probe request\n");
2671 if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) &&
2672 ((ieee->iw_mode == IW_MODE_ADHOC ||
2673 ieee->iw_mode == IW_MODE_MASTER) &&
2674 ieee->state == RTLLIB_LINKED))
2675 rtllib_rx_probe_rq(ieee, skb);