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) 2004-2005, 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
16 #include <linux/compiler.h>
17 #include <linux/config.h>
18 #include <linux/errno.h>
19 #include <linux/if_arp.h>
20 #include <linux/in6.h>
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/netdevice.h>
26 #include <linux/proc_fs.h>
27 #include <linux/skbuff.h>
28 #include <linux/slab.h>
29 #include <linux/tcp.h>
30 #include <linux/types.h>
31 #include <linux/wireless.h>
32 #include <linux/etherdevice.h>
33 #include <asm/uaccess.h>
34 #include <linux/ctype.h>
36 #include <net/ieee80211.h>
38 static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
40 struct ieee80211_rx_stats *rx_stats)
42 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
43 u16 fc = le16_to_cpu(hdr->frame_ctl);
46 skb->mac.raw = skb->data;
47 skb_pull(skb, ieee80211_get_hdrlen(fc));
48 skb->pkt_type = PACKET_OTHERHOST;
49 skb->protocol = __constant_htons(ETH_P_80211_RAW);
50 memset(skb->cb, 0, sizeof(skb->cb));
54 /* Called only as a tasklet (software IRQ) */
55 static struct ieee80211_frag_entry *ieee80211_frag_cache_find(struct
63 struct ieee80211_frag_entry *entry;
66 for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
67 entry = &ieee->frag_cache[i];
68 if (entry->skb != NULL &&
69 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
70 IEEE80211_DEBUG_FRAG("expiring fragment cache entry "
71 "seq=%u last_frag=%u\n",
72 entry->seq, entry->last_frag);
73 dev_kfree_skb_any(entry->skb);
77 if (entry->skb != NULL && entry->seq == seq &&
78 (entry->last_frag + 1 == frag || frag == -1) &&
79 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
80 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
87 /* Called only as a tasklet (software IRQ) */
88 static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee,
89 struct ieee80211_hdr_4addr *hdr)
91 struct sk_buff *skb = NULL;
93 unsigned int frag, seq;
94 struct ieee80211_frag_entry *entry;
96 sc = le16_to_cpu(hdr->seq_ctl);
97 frag = WLAN_GET_SEQ_FRAG(sc);
98 seq = WLAN_GET_SEQ_SEQ(sc);
101 /* Reserve enough space to fit maximum frame length */
102 skb = dev_alloc_skb(ieee->dev->mtu +
103 sizeof(struct ieee80211_hdr_4addr) +
106 8 /* WEP */ + ETH_ALEN /* WDS */ );
110 entry = &ieee->frag_cache[ieee->frag_next_idx];
111 ieee->frag_next_idx++;
112 if (ieee->frag_next_idx >= IEEE80211_FRAG_CACHE_LEN)
113 ieee->frag_next_idx = 0;
115 if (entry->skb != NULL)
116 dev_kfree_skb_any(entry->skb);
118 entry->first_frag_time = jiffies;
120 entry->last_frag = frag;
122 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
123 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
125 /* received a fragment of a frame for which the head fragment
126 * should have already been received */
127 entry = ieee80211_frag_cache_find(ieee, seq, frag, hdr->addr2,
130 entry->last_frag = frag;
138 /* Called only as a tasklet (software IRQ) */
139 static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
140 struct ieee80211_hdr_4addr *hdr)
144 struct ieee80211_frag_entry *entry;
146 sc = le16_to_cpu(hdr->seq_ctl);
147 seq = WLAN_GET_SEQ_SEQ(sc);
149 entry = ieee80211_frag_cache_find(ieee, seq, -1, hdr->addr2,
153 IEEE80211_DEBUG_FRAG("could not invalidate fragment cache "
154 "entry (seq=%u)\n", seq);
163 /* ieee80211_rx_frame_mgtmt
165 * Responsible for handling management control frames
167 * Called by ieee80211_rx */
169 ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
170 struct ieee80211_rx_stats *rx_stats, u16 type,
173 if (ieee->iw_mode == IW_MODE_MASTER) {
174 printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
178 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
182 if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) {
183 if (stype == WLAN_FC_STYPE_BEACON &&
184 ieee->iw_mode == IW_MODE_MASTER) {
185 struct sk_buff *skb2;
186 /* Process beacon frames also in kernel driver to
187 * update STA(AP) table statistics */
188 skb2 = skb_clone(skb, GFP_ATOMIC);
190 hostap_rx(skb2->dev, skb2, rx_stats);
193 /* send management frames to the user space daemon for
195 ieee->apdevstats.rx_packets++;
196 ieee->apdevstats.rx_bytes += skb->len;
197 prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
201 if (ieee->iw_mode == IW_MODE_MASTER) {
202 if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
203 printk(KERN_DEBUG "%s: unknown management frame "
204 "(type=0x%02x, stype=0x%02x) dropped\n",
205 skb->dev->name, type, stype);
209 hostap_rx(skb->dev, skb, rx_stats);
213 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
214 "received in non-Host AP mode\n", skb->dev->name);
219 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
220 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
221 static unsigned char rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
223 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
224 static unsigned char bridge_tunnel_header[] =
225 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
226 /* No encapsulation header if EtherType < 0x600 (=length) */
228 /* Called by ieee80211_rx_frame_decrypt */
229 static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
232 struct net_device *dev = ieee->dev;
234 struct ieee80211_hdr_3addr *hdr;
240 hdr = (struct ieee80211_hdr_3addr *)skb->data;
241 fc = le16_to_cpu(hdr->frame_ctl);
243 /* check that the frame is unicast frame to us */
244 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
245 IEEE80211_FCTL_TODS &&
246 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
247 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
248 /* ToDS frame with own addr BSSID and DA */
249 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
250 IEEE80211_FCTL_FROMDS &&
251 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
252 /* FromDS frame with own addr as DA */
256 if (skb->len < 24 + 8)
259 /* check for port access entity Ethernet type */
260 pos = skb->data + 24;
261 ethertype = (pos[6] << 8) | pos[7];
262 if (ethertype == ETH_P_PAE)
268 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
270 ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
271 struct ieee80211_crypt_data *crypt)
273 struct ieee80211_hdr_3addr *hdr;
276 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
279 hdr = (struct ieee80211_hdr_3addr *)skb->data;
280 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
282 atomic_inc(&crypt->refcnt);
283 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
284 atomic_dec(&crypt->refcnt);
286 IEEE80211_DEBUG_DROP("decryption failed (SA=" MAC_FMT
287 ") res=%d\n", MAC_ARG(hdr->addr2), res);
289 IEEE80211_DEBUG_DROP("Decryption failed ICV "
290 "mismatch (key %d)\n",
291 skb->data[hdrlen + 3] >> 6);
292 ieee->ieee_stats.rx_discards_undecryptable++;
299 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
301 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee,
302 struct sk_buff *skb, int keyidx,
303 struct ieee80211_crypt_data *crypt)
305 struct ieee80211_hdr_3addr *hdr;
308 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
311 hdr = (struct ieee80211_hdr_3addr *)skb->data;
312 hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
314 atomic_inc(&crypt->refcnt);
315 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
316 atomic_dec(&crypt->refcnt);
318 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
319 " (SA=" MAC_FMT " keyidx=%d)\n",
320 ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
327 /* All received frames are sent to this function. @skb contains the frame in
328 * IEEE 802.11 format, i.e., in the format it was sent over air.
329 * This function is called only as a tasklet (software IRQ). */
330 int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
331 struct ieee80211_rx_stats *rx_stats)
333 struct net_device *dev = ieee->dev;
334 struct ieee80211_hdr_4addr *hdr;
336 u16 fc, type, stype, sc;
337 struct net_device_stats *stats;
342 struct net_device *wds = NULL;
343 struct sk_buff *skb2 = NULL;
344 struct net_device *wds = NULL;
345 int frame_authorized = 0;
346 int from_assoc_ap = 0;
351 struct ieee80211_crypt_data *crypt = NULL;
354 hdr = (struct ieee80211_hdr_4addr *)skb->data;
355 stats = &ieee->stats;
358 printk(KERN_INFO "%s: SKB length < 10\n", dev->name);
362 fc = le16_to_cpu(hdr->frame_ctl);
363 type = WLAN_FC_GET_TYPE(fc);
364 stype = WLAN_FC_GET_STYPE(fc);
365 sc = le16_to_cpu(hdr->seq_ctl);
366 frag = WLAN_GET_SEQ_FRAG(sc);
367 hdrlen = ieee80211_get_hdrlen(fc);
369 /* Put this code here so that we avoid duplicating it in all
370 * Rx paths. - Jean II */
371 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
372 /* If spy monitoring on */
373 if (ieee->spy_data.spy_number > 0) {
374 struct iw_quality wstats;
377 if (rx_stats->mask & IEEE80211_STATMASK_RSSI) {
378 wstats.level = rx_stats->rssi;
379 wstats.updated |= IW_QUAL_LEVEL_UPDATED;
381 wstats.updated |= IW_QUAL_LEVEL_INVALID;
383 if (rx_stats->mask & IEEE80211_STATMASK_NOISE) {
384 wstats.noise = rx_stats->noise;
385 wstats.updated |= IW_QUAL_NOISE_UPDATED;
387 wstats.updated |= IW_QUAL_NOISE_INVALID;
389 if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) {
390 wstats.qual = rx_stats->signal;
391 wstats.updated |= IW_QUAL_QUAL_UPDATED;
393 wstats.updated |= IW_QUAL_QUAL_INVALID;
395 /* Update spy records */
396 wireless_spy_update(ieee->dev, hdr->addr2, &wstats);
398 #endif /* IW_WIRELESS_SPY */
401 hostap_update_rx_stats(local->ap, hdr, rx_stats);
404 if (ieee->iw_mode == IW_MODE_MONITOR) {
405 ieee80211_monitor_rx(ieee, skb, rx_stats);
407 stats->rx_bytes += skb->len;
411 if ((is_multicast_ether_addr(hdr->addr1) ||
412 is_broadcast_ether_addr(hdr->addr2)) ? ieee->host_mc_decrypt :
413 ieee->host_decrypt) {
415 if (skb->len >= hdrlen + 3)
416 idx = skb->data[hdrlen + 3] >> 6;
417 crypt = ieee->crypt[idx];
421 /* Use station specific key to override default keys if the
422 * receiver address is a unicast address ("individual RA"). If
423 * bcrx_sta_key parameter is set, station specific key is used
424 * even with broad/multicast targets (this is against IEEE
425 * 802.11, but makes it easier to use different keys with
426 * stations that do not support WEP key mapping). */
428 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
429 (void)hostap_handle_sta_crypto(local, hdr, &crypt,
433 /* allow NULL decrypt to indicate an station specific override
434 * for default encryption */
435 if (crypt && (crypt->ops == NULL ||
436 crypt->ops->decrypt_mpdu == NULL))
439 if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
440 /* This seems to be triggered by some (multicast?)
441 * frames from other than current BSS, so just drop the
442 * frames silently instead of filling system log with
444 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
445 " (SA=" MAC_FMT ")\n",
446 MAC_ARG(hdr->addr2));
447 ieee->ieee_stats.rx_discards_undecryptable++;
452 if (type != WLAN_FC_TYPE_DATA) {
453 if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH &&
454 fc & IEEE80211_FCTL_PROTECTED && ieee->host_decrypt &&
455 (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) {
456 printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
457 "from " MAC_FMT "\n", dev->name,
458 MAC_ARG(hdr->addr2));
459 /* TODO: could inform hostapd about this so that it
460 * could send auth failure report */
464 if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
471 /* Data frame - extract src/dst addresses */
472 if (skb->len < IEEE80211_3ADDR_LEN)
475 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
476 case IEEE80211_FCTL_FROMDS:
477 memcpy(dst, hdr->addr1, ETH_ALEN);
478 memcpy(src, hdr->addr3, ETH_ALEN);
480 case IEEE80211_FCTL_TODS:
481 memcpy(dst, hdr->addr3, ETH_ALEN);
482 memcpy(src, hdr->addr2, ETH_ALEN);
484 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
485 if (skb->len < IEEE80211_4ADDR_LEN)
487 memcpy(dst, hdr->addr3, ETH_ALEN);
488 memcpy(src, hdr->addr4, ETH_ALEN);
491 memcpy(dst, hdr->addr1, ETH_ALEN);
492 memcpy(src, hdr->addr2, ETH_ALEN);
497 if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
500 skb->dev = dev = wds;
501 stats = hostap_get_stats(dev);
504 if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
505 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
506 IEEE80211_FCTL_FROMDS && ieee->stadev
507 && memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
508 /* Frame from BSSID of the AP for which we are a client */
509 skb->dev = dev = ieee->stadev;
510 stats = hostap_get_stats(dev);
515 dev->last_rx = jiffies;
518 if ((ieee->iw_mode == IW_MODE_MASTER ||
519 ieee->iw_mode == IW_MODE_REPEAT) && !from_assoc_ap) {
520 switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
522 case AP_RX_CONTINUE_NOT_AUTHORIZED:
523 frame_authorized = 0;
526 frame_authorized = 1;
536 /* Nullfunc frames may have PS-bit set, so they must be passed to
537 * hostap_handle_sta_rx() before being dropped here. */
539 stype &= ~IEEE80211_STYPE_QOS_DATA;
541 if (stype != IEEE80211_STYPE_DATA &&
542 stype != IEEE80211_STYPE_DATA_CFACK &&
543 stype != IEEE80211_STYPE_DATA_CFPOLL &&
544 stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
545 if (stype != IEEE80211_STYPE_NULLFUNC)
546 IEEE80211_DEBUG_DROP("RX: dropped data frame "
547 "with no data (type=0x%02x, "
548 "subtype=0x%02x, len=%d)\n",
549 type, stype, skb->len);
553 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
555 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
556 (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
559 hdr = (struct ieee80211_hdr_4addr *)skb->data;
561 /* skb: hdr + (possibly fragmented) plaintext payload */
562 // PR: FIXME: hostap has additional conditions in the "if" below:
563 // ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
564 if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
566 struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
567 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
570 IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
571 "Rx cannot get skb from fragment "
572 "cache (morefrag=%d seq=%u frag=%u)\n",
573 (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
574 WLAN_GET_SEQ_SEQ(sc), frag);
582 if (frag_skb->tail + flen > frag_skb->end) {
583 printk(KERN_WARNING "%s: host decrypted and "
584 "reassembled frame did not fit skb\n",
586 ieee80211_frag_cache_invalidate(ieee, hdr);
591 /* copy first fragment (including full headers) into
592 * beginning of the fragment cache skb */
593 memcpy(skb_put(frag_skb, flen), skb->data, flen);
595 /* append frame payload to the end of the fragment
597 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
600 dev_kfree_skb_any(skb);
603 if (fc & IEEE80211_FCTL_MOREFRAGS) {
604 /* more fragments expected - leave the skb in fragment
605 * cache for now; it will be delivered to upper layers
606 * after all fragments have been received */
610 /* this was the last fragment and the frame will be
611 * delivered, so remove skb from fragment cache */
613 hdr = (struct ieee80211_hdr_4addr *)skb->data;
614 ieee80211_frag_cache_invalidate(ieee, hdr);
617 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
618 * encrypted/authenticated */
619 if (ieee->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
620 ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
623 hdr = (struct ieee80211_hdr_4addr *)skb->data;
624 if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) {
625 if ( /*ieee->ieee802_1x && */
626 ieee80211_is_eapol_frame(ieee, skb)) {
627 /* pass unencrypted EAPOL frames even if encryption is
630 IEEE80211_DEBUG_DROP("encryption configured, but RX "
631 "frame not encrypted (SA=" MAC_FMT
632 ")\n", MAC_ARG(hdr->addr2));
637 if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep &&
638 !ieee80211_is_eapol_frame(ieee, skb)) {
639 IEEE80211_DEBUG_DROP("dropped unencrypted RX data "
640 "frame from " MAC_FMT
641 " (drop_unencrypted=1)\n",
642 MAC_ARG(hdr->addr2));
646 /* skb: hdr + (possible reassembled) full plaintext payload */
648 payload = skb->data + hdrlen;
649 ethertype = (payload[6] << 8) | payload[7];
652 /* If IEEE 802.1X is used, check whether the port is authorized to send
653 * the received frame. */
654 if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) {
655 if (ethertype == ETH_P_PAE) {
656 printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n",
658 if (ieee->hostapd && ieee->apdev) {
659 /* Send IEEE 802.1X frames to the user
660 * space daemon for processing */
661 prism2_rx_80211(ieee->apdev, skb, rx_stats,
663 ieee->apdevstats.rx_packets++;
664 ieee->apdevstats.rx_bytes += skb->len;
667 } else if (!frame_authorized) {
668 printk(KERN_DEBUG "%s: dropped frame from "
669 "unauthorized port (IEEE 802.1X): "
670 "ethertype=0x%04x\n", dev->name, ethertype);
676 /* convert hdr + possible LLC headers into Ethernet header */
677 if (skb->len - hdrlen >= 8 &&
678 ((memcmp(payload, rfc1042_header, SNAP_SIZE) == 0 &&
679 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
680 memcmp(payload, bridge_tunnel_header, SNAP_SIZE) == 0)) {
681 /* remove RFC1042 or Bridge-Tunnel encapsulation and
682 * replace EtherType */
683 skb_pull(skb, hdrlen + SNAP_SIZE);
684 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
685 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
688 /* Leave Ethernet header part of hdr and full payload */
689 skb_pull(skb, hdrlen);
690 len = htons(skb->len);
691 memcpy(skb_push(skb, 2), &len, 2);
692 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
693 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
697 if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
698 IEEE80211_FCTL_TODS) && skb->len >= ETH_HLEN + ETH_ALEN) {
699 /* Non-standard frame: get addr4 from its bogus location after
701 memcpy(skb->data + ETH_ALEN,
702 skb->data + skb->len - ETH_ALEN, ETH_ALEN);
703 skb_trim(skb, skb->len - ETH_ALEN);
708 stats->rx_bytes += skb->len;
711 if (ieee->iw_mode == IW_MODE_MASTER && !wds && ieee->ap->bridge_packets) {
713 /* copy multicast frame both to the higher layers and
714 * to the wireless media */
715 ieee->ap->bridged_multicast++;
716 skb2 = skb_clone(skb, GFP_ATOMIC);
718 printk(KERN_DEBUG "%s: skb_clone failed for "
719 "multicast frame\n", dev->name);
720 } else if (hostap_is_sta_assoc(ieee->ap, dst)) {
721 /* send frame directly to the associated STA using
722 * wireless media and not passing to higher layers */
723 ieee->ap->bridged_unicast++;
730 /* send to wireless media */
731 skb2->protocol = __constant_htons(ETH_P_802_3);
732 skb2->mac.raw = skb2->nh.raw = skb2->data;
733 /* skb2->nh.raw = skb2->data + ETH_HLEN; */
735 dev_queue_xmit(skb2);
740 skb->protocol = eth_type_trans(skb, dev);
741 memset(skb->cb, 0, sizeof(skb->cb));
743 skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
750 hostap_handle_sta_release(sta);
757 /* Returning 0 indicates to caller that we have not handled the SKB--
758 * so it is still allocated and can be used again by underlying
759 * hardware as a DMA target */
763 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
765 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
768 * Make ther structure we read from the beacon packet has
771 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
772 *info_element, int sub_type)
775 if (info_element->qui_subtype != sub_type)
777 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
779 if (info_element->qui_type != QOS_OUI_TYPE)
781 if (info_element->version != QOS_VERSION_1)
788 * Parse a QoS parameter element
790 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
791 *element_param, struct ieee80211_info_element
795 u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2;
797 if ((info_element == NULL) || (element_param == NULL))
800 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
801 memcpy(element_param->info_element.qui, info_element->data,
803 element_param->info_element.elementID = info_element->id;
804 element_param->info_element.length = info_element->len;
808 ret = ieee80211_verify_qos_info(&element_param->info_element,
809 QOS_OUI_PARAM_SUB_TYPE);
814 * Parse a QoS information element
816 static int ieee80211_read_qos_info_element(struct
817 ieee80211_qos_information_element
818 *element_info, struct ieee80211_info_element
822 u16 size = sizeof(struct ieee80211_qos_information_element) - 2;
824 if (element_info == NULL)
826 if (info_element == NULL)
829 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
830 memcpy(element_info->qui, info_element->data,
832 element_info->elementID = info_element->id;
833 element_info->length = info_element->len;
838 ret = ieee80211_verify_qos_info(element_info,
839 QOS_OUI_INFO_SUB_TYPE);
844 * Write QoS parameters from the ac parameters.
846 static int ieee80211_qos_convert_ac_to_parameters(struct
847 ieee80211_qos_parameter_info
849 ieee80211_qos_parameters
854 struct ieee80211_qos_ac_parameter *ac_params;
859 for (i = 0; i < QOS_QUEUE_NUM; i++) {
860 ac_params = &(param_elm->ac_params_record[i]);
862 qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F;
863 qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2;
865 cw_min = ac_params->ecw_min_max & 0x0F;
866 qos_param->cw_min[i] = (u16) ((1 << cw_min) - 1);
868 cw_max = (ac_params->ecw_min_max & 0xF0) >> 4;
869 qos_param->cw_max[i] = (u16) ((1 << cw_max) - 1);
872 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
874 txop = le16_to_cpu(ac_params->tx_op_limit) * 32;
875 qos_param->tx_op_limit[i] = (u16) txop;
881 * we have a generic data element which it may contain QoS information or
882 * parameters element. check the information element length to decide
885 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
887 struct ieee80211_network *network)
890 struct ieee80211_qos_parameters *qos_param = NULL;
891 struct ieee80211_qos_information_element qos_info_element;
893 rc = ieee80211_read_qos_info_element(&qos_info_element, info_element);
896 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
897 network->flags |= NETWORK_HAS_QOS_INFORMATION;
899 struct ieee80211_qos_parameter_info param_element;
901 rc = ieee80211_read_qos_param_element(¶m_element,
904 qos_param = &(network->qos_data.parameters);
905 ieee80211_qos_convert_ac_to_parameters(¶m_element,
907 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
908 network->qos_data.param_count =
909 param_element.info_element.ac_info & 0x0F;
914 IEEE80211_DEBUG_QOS("QoS is supported\n");
915 network->qos_data.supported = 1;
920 static int ieee80211_parse_info_param(struct ieee80211_info_element
921 *info_element, u16 length,
922 struct ieee80211_network *network)
925 #ifdef CONFIG_IEEE80211_DEBUG
930 while (length >= sizeof(*info_element)) {
931 if (sizeof(*info_element) + info_element->len > length) {
932 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
933 "info_element->len + 2 > left : "
934 "info_element->len+2=%zd left=%d, id=%d.\n",
936 sizeof(*info_element),
937 length, info_element->id);
941 switch (info_element->id) {
943 if (ieee80211_is_empty_essid(info_element->data,
944 info_element->len)) {
945 network->flags |= NETWORK_EMPTY_ESSID;
949 network->ssid_len = min(info_element->len,
950 (u8) IW_ESSID_MAX_SIZE);
951 memcpy(network->ssid, info_element->data,
953 if (network->ssid_len < IW_ESSID_MAX_SIZE)
954 memset(network->ssid + network->ssid_len, 0,
955 IW_ESSID_MAX_SIZE - network->ssid_len);
957 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
958 network->ssid, network->ssid_len);
961 case MFIE_TYPE_RATES:
962 #ifdef CONFIG_IEEE80211_DEBUG
965 network->rates_len = min(info_element->len,
967 for (i = 0; i < network->rates_len; i++) {
968 network->rates[i] = info_element->data[i];
969 #ifdef CONFIG_IEEE80211_DEBUG
970 p += snprintf(p, sizeof(rates_str) -
971 (p - rates_str), "%02X ",
974 if (ieee80211_is_ofdm_rate
975 (info_element->data[i])) {
976 network->flags |= NETWORK_HAS_OFDM;
977 if (info_element->data[i] &
978 IEEE80211_BASIC_RATE_MASK)
984 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
985 rates_str, network->rates_len);
988 case MFIE_TYPE_RATES_EX:
989 #ifdef CONFIG_IEEE80211_DEBUG
992 network->rates_ex_len = min(info_element->len,
993 MAX_RATES_EX_LENGTH);
994 for (i = 0; i < network->rates_ex_len; i++) {
995 network->rates_ex[i] = info_element->data[i];
996 #ifdef CONFIG_IEEE80211_DEBUG
997 p += snprintf(p, sizeof(rates_str) -
998 (p - rates_str), "%02X ",
1001 if (ieee80211_is_ofdm_rate
1002 (info_element->data[i])) {
1003 network->flags |= NETWORK_HAS_OFDM;
1004 if (info_element->data[i] &
1005 IEEE80211_BASIC_RATE_MASK)
1011 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1012 rates_str, network->rates_ex_len);
1015 case MFIE_TYPE_DS_SET:
1016 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1017 info_element->data[0]);
1018 network->channel = info_element->data[0];
1021 case MFIE_TYPE_FH_SET:
1022 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1025 case MFIE_TYPE_CF_SET:
1026 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1030 IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: ignored\n");
1033 case MFIE_TYPE_ERP_INFO:
1034 network->erp_value = info_element->data[0];
1035 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1036 network->erp_value);
1039 case MFIE_TYPE_IBSS_SET:
1040 network->atim_window = info_element->data[0];
1041 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1042 network->atim_window);
1045 case MFIE_TYPE_CHALLENGE:
1046 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1049 case MFIE_TYPE_GENERIC:
1050 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1052 if (!ieee80211_parse_qos_info_param_IE(info_element,
1056 if (info_element->len >= 4 &&
1057 info_element->data[0] == 0x00 &&
1058 info_element->data[1] == 0x50 &&
1059 info_element->data[2] == 0xf2 &&
1060 info_element->data[3] == 0x01) {
1061 network->wpa_ie_len = min(info_element->len + 2,
1063 memcpy(network->wpa_ie, info_element,
1064 network->wpa_ie_len);
1069 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
1071 network->rsn_ie_len = min(info_element->len + 2,
1073 memcpy(network->rsn_ie, info_element,
1074 network->rsn_ie_len);
1077 case MFIE_TYPE_QOS_PARAMETER:
1079 "QoS Error need to parse QOS_PARAMETER IE\n");
1083 IEEE80211_DEBUG_MGMT("unsupported IE %d\n",
1088 length -= sizeof(*info_element) + info_element->len;
1090 (struct ieee80211_info_element *)&info_element->
1091 data[info_element->len];
1097 static int ieee80211_handle_assoc_resp(struct ieee80211_device *ieee, struct ieee80211_assoc_response
1098 *frame, struct ieee80211_rx_stats *stats)
1100 struct ieee80211_network network_resp;
1101 struct ieee80211_network *network = &network_resp;
1102 struct net_device *dev = ieee->dev;
1105 network->qos_data.active = 0;
1106 network->qos_data.supported = 0;
1107 network->qos_data.param_count = 0;
1108 network->qos_data.old_param_count = 0;
1110 //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF);
1111 network->atim_window = le16_to_cpu(frame->aid);
1112 network->listen_interval = le16_to_cpu(frame->status);
1113 memcpy(network->bssid, frame->header.addr3, ETH_ALEN);
1114 network->capability = le16_to_cpu(frame->capability);
1115 network->last_scanned = jiffies;
1116 network->rates_len = network->rates_ex_len = 0;
1117 network->last_associate = 0;
1118 network->ssid_len = 0;
1119 network->erp_value =
1120 (network->capability & WLAN_CAPABILITY_IBSS) ? 0x3 : 0x0;
1122 if (stats->freq == IEEE80211_52GHZ_BAND) {
1123 /* for A band (No DS info) */
1124 network->channel = stats->received_channel;
1126 network->flags |= NETWORK_HAS_CCK;
1128 network->wpa_ie_len = 0;
1129 network->rsn_ie_len = 0;
1131 if (ieee80211_parse_info_param
1132 (frame->info_element, stats->len - sizeof(*frame), network))
1136 if (stats->freq == IEEE80211_52GHZ_BAND)
1137 network->mode = IEEE_A;
1139 if (network->flags & NETWORK_HAS_OFDM)
1140 network->mode |= IEEE_G;
1141 if (network->flags & NETWORK_HAS_CCK)
1142 network->mode |= IEEE_B;
1145 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
1146 network->flags |= NETWORK_EMPTY_ESSID;
1148 memcpy(&network->stats, stats, sizeof(network->stats));
1150 if (ieee->handle_assoc_response != NULL)
1151 ieee->handle_assoc_response(dev, frame, network);
1156 /***************************************************/
1158 static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response
1160 struct ieee80211_network *network,
1161 struct ieee80211_rx_stats *stats)
1163 network->qos_data.active = 0;
1164 network->qos_data.supported = 0;
1165 network->qos_data.param_count = 0;
1166 network->qos_data.old_param_count = 0;
1168 /* Pull out fixed field data */
1169 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
1170 network->capability = le16_to_cpu(beacon->capability);
1171 network->last_scanned = jiffies;
1172 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
1173 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
1174 network->beacon_interval = le16_to_cpu(beacon->beacon_interval);
1175 /* Where to pull this? beacon->listen_interval; */
1176 network->listen_interval = 0x0A;
1177 network->rates_len = network->rates_ex_len = 0;
1178 network->last_associate = 0;
1179 network->ssid_len = 0;
1181 network->atim_window = 0;
1182 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
1185 if (stats->freq == IEEE80211_52GHZ_BAND) {
1186 /* for A band (No DS info) */
1187 network->channel = stats->received_channel;
1189 network->flags |= NETWORK_HAS_CCK;
1191 network->wpa_ie_len = 0;
1192 network->rsn_ie_len = 0;
1194 if (ieee80211_parse_info_param
1195 (beacon->info_element, stats->len - sizeof(*beacon), network))
1199 if (stats->freq == IEEE80211_52GHZ_BAND)
1200 network->mode = IEEE_A;
1202 if (network->flags & NETWORK_HAS_OFDM)
1203 network->mode |= IEEE_G;
1204 if (network->flags & NETWORK_HAS_CCK)
1205 network->mode |= IEEE_B;
1208 if (network->mode == 0) {
1209 IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
1211 escape_essid(network->ssid,
1213 MAC_ARG(network->bssid));
1217 if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
1218 network->flags |= NETWORK_EMPTY_ESSID;
1220 memcpy(&network->stats, stats, sizeof(network->stats));
1225 static inline int is_same_network(struct ieee80211_network *src,
1226 struct ieee80211_network *dst)
1228 /* A network is only a duplicate if the channel, BSSID, and ESSID
1229 * all match. We treat all <hidden> with the same BSSID and channel
1231 return ((src->ssid_len == dst->ssid_len) &&
1232 (src->channel == dst->channel) &&
1233 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
1234 !memcmp(src->ssid, dst->ssid, src->ssid_len));
1237 static inline void update_network(struct ieee80211_network *dst,
1238 struct ieee80211_network *src)
1243 memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
1244 dst->capability = src->capability;
1245 memcpy(dst->rates, src->rates, src->rates_len);
1246 dst->rates_len = src->rates_len;
1247 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
1248 dst->rates_ex_len = src->rates_ex_len;
1250 dst->mode = src->mode;
1251 dst->flags = src->flags;
1252 dst->time_stamp[0] = src->time_stamp[0];
1253 dst->time_stamp[1] = src->time_stamp[1];
1255 dst->beacon_interval = src->beacon_interval;
1256 dst->listen_interval = src->listen_interval;
1257 dst->atim_window = src->atim_window;
1258 dst->erp_value = src->erp_value;
1260 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
1261 dst->wpa_ie_len = src->wpa_ie_len;
1262 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
1263 dst->rsn_ie_len = src->rsn_ie_len;
1265 dst->last_scanned = jiffies;
1266 qos_active = src->qos_data.active;
1267 old_param = dst->qos_data.old_param_count;
1268 if (dst->flags & NETWORK_HAS_QOS_MASK)
1269 memcpy(&dst->qos_data, &src->qos_data,
1270 sizeof(struct ieee80211_qos_data));
1272 dst->qos_data.supported = src->qos_data.supported;
1273 dst->qos_data.param_count = src->qos_data.param_count;
1276 if (dst->qos_data.supported == 1) {
1279 ("QoS the network %s is QoS supported\n",
1283 ("QoS the network is QoS supported\n");
1285 dst->qos_data.active = qos_active;
1286 dst->qos_data.old_param_count = old_param;
1288 /* dst->last_associate is not overwritten */
1291 static inline int is_beacon(int fc)
1293 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON);
1296 static inline void ieee80211_process_probe_response(struct ieee80211_device
1298 ieee80211_probe_response
1299 *beacon, struct ieee80211_rx_stats
1302 struct net_device *dev = ieee->dev;
1303 struct ieee80211_network network;
1304 struct ieee80211_network *target;
1305 struct ieee80211_network *oldest = NULL;
1306 #ifdef CONFIG_IEEE80211_DEBUG
1307 struct ieee80211_info_element *info_element = beacon->info_element;
1309 unsigned long flags;
1311 IEEE80211_DEBUG_SCAN("'%s' (" MAC_FMT
1312 "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
1313 escape_essid(info_element->data,
1315 MAC_ARG(beacon->header.addr3),
1316 (beacon->capability & (1 << 0xf)) ? '1' : '0',
1317 (beacon->capability & (1 << 0xe)) ? '1' : '0',
1318 (beacon->capability & (1 << 0xd)) ? '1' : '0',
1319 (beacon->capability & (1 << 0xc)) ? '1' : '0',
1320 (beacon->capability & (1 << 0xb)) ? '1' : '0',
1321 (beacon->capability & (1 << 0xa)) ? '1' : '0',
1322 (beacon->capability & (1 << 0x9)) ? '1' : '0',
1323 (beacon->capability & (1 << 0x8)) ? '1' : '0',
1324 (beacon->capability & (1 << 0x7)) ? '1' : '0',
1325 (beacon->capability & (1 << 0x6)) ? '1' : '0',
1326 (beacon->capability & (1 << 0x5)) ? '1' : '0',
1327 (beacon->capability & (1 << 0x4)) ? '1' : '0',
1328 (beacon->capability & (1 << 0x3)) ? '1' : '0',
1329 (beacon->capability & (1 << 0x2)) ? '1' : '0',
1330 (beacon->capability & (1 << 0x1)) ? '1' : '0',
1331 (beacon->capability & (1 << 0x0)) ? '1' : '0');
1333 if (ieee80211_network_init(ieee, beacon, &network, stats)) {
1334 IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
1335 escape_essid(info_element->data,
1337 MAC_ARG(beacon->header.addr3),
1338 is_beacon(le16_to_cpu
1341 "BEACON" : "PROBE RESPONSE");
1345 /* The network parsed correctly -- so now we scan our known networks
1346 * to see if we can find it in our list.
1348 * NOTE: This search is definitely not optimized. Once its doing
1349 * the "right thing" we'll optimize it for efficiency if
1352 /* Search for this entry in the list and update it if it is
1355 spin_lock_irqsave(&ieee->lock, flags);
1357 list_for_each_entry(target, &ieee->network_list, list) {
1358 if (is_same_network(target, &network))
1361 if ((oldest == NULL) ||
1362 (target->last_scanned < oldest->last_scanned))
1366 /* If we didn't find a match, then get a new network slot to initialize
1367 * with this beacon's information */
1368 if (&target->list == &ieee->network_list) {
1369 if (list_empty(&ieee->network_free_list)) {
1370 /* If there are no more slots, expire the oldest */
1371 list_del(&oldest->list);
1373 IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
1375 escape_essid(target->ssid,
1377 MAC_ARG(target->bssid));
1379 /* Otherwise just pull from the free list */
1380 target = list_entry(ieee->network_free_list.next,
1381 struct ieee80211_network, list);
1382 list_del(ieee->network_free_list.next);
1385 #ifdef CONFIG_IEEE80211_DEBUG
1386 IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
1387 escape_essid(network.ssid,
1389 MAC_ARG(network.bssid),
1390 is_beacon(le16_to_cpu
1393 "BEACON" : "PROBE RESPONSE");
1395 memcpy(target, &network, sizeof(*target));
1396 list_add_tail(&target->list, &ieee->network_list);
1398 IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
1399 escape_essid(target->ssid,
1401 MAC_ARG(target->bssid),
1402 is_beacon(le16_to_cpu
1405 "BEACON" : "PROBE RESPONSE");
1406 update_network(target, &network);
1409 spin_unlock_irqrestore(&ieee->lock, flags);
1411 if (is_beacon(le16_to_cpu(beacon->header.frame_ctl))) {
1412 if (ieee->handle_beacon != NULL)
1413 ieee->handle_beacon(dev, beacon, &network);
1415 if (ieee->handle_probe_response != NULL)
1416 ieee->handle_probe_response(dev, beacon, &network);
1420 void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1421 struct ieee80211_hdr_4addr *header,
1422 struct ieee80211_rx_stats *stats)
1424 switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
1425 case IEEE80211_STYPE_ASSOC_RESP:
1426 IEEE80211_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n",
1427 WLAN_FC_GET_STYPE(le16_to_cpu
1428 (header->frame_ctl)));
1429 ieee80211_handle_assoc_resp(ieee,
1430 (struct ieee80211_assoc_response *)
1434 case IEEE80211_STYPE_REASSOC_RESP:
1435 IEEE80211_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n",
1436 WLAN_FC_GET_STYPE(le16_to_cpu
1437 (header->frame_ctl)));
1440 case IEEE80211_STYPE_PROBE_REQ:
1441 IEEE80211_DEBUG_MGMT("recieved auth (%d)\n",
1442 WLAN_FC_GET_STYPE(le16_to_cpu
1443 (header->frame_ctl)));
1445 if (ieee->handle_probe_request != NULL)
1446 ieee->handle_probe_request(ieee->dev,
1448 ieee80211_probe_request *)
1452 case IEEE80211_STYPE_PROBE_RESP:
1453 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
1454 WLAN_FC_GET_STYPE(le16_to_cpu
1455 (header->frame_ctl)));
1456 IEEE80211_DEBUG_SCAN("Probe response\n");
1457 ieee80211_process_probe_response(ieee,
1459 ieee80211_probe_response *)
1463 case IEEE80211_STYPE_BEACON:
1464 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
1465 WLAN_FC_GET_STYPE(le16_to_cpu
1466 (header->frame_ctl)));
1467 IEEE80211_DEBUG_SCAN("Beacon\n");
1468 ieee80211_process_probe_response(ieee,
1470 ieee80211_probe_response *)
1473 case IEEE80211_STYPE_AUTH:
1475 IEEE80211_DEBUG_MGMT("recieved auth (%d)\n",
1476 WLAN_FC_GET_STYPE(le16_to_cpu
1477 (header->frame_ctl)));
1479 if (ieee->handle_auth != NULL)
1480 ieee->handle_auth(ieee->dev,
1481 (struct ieee80211_auth *)header);
1484 case IEEE80211_STYPE_DISASSOC:
1485 if (ieee->handle_disassoc != NULL)
1486 ieee->handle_disassoc(ieee->dev,
1487 (struct ieee80211_disassoc *)
1491 case IEEE80211_STYPE_DEAUTH:
1492 printk("DEAUTH from AP\n");
1493 if (ieee->handle_deauth != NULL)
1494 ieee->handle_deauth(ieee->dev, (struct ieee80211_auth *)
1498 IEEE80211_DEBUG_MGMT("received UNKNOWN (%d)\n",
1499 WLAN_FC_GET_STYPE(le16_to_cpu
1500 (header->frame_ctl)));
1501 IEEE80211_WARNING("%s: Unknown management packet: %d\n",
1503 WLAN_FC_GET_STYPE(le16_to_cpu
1504 (header->frame_ctl)));
1509 EXPORT_SYMBOL(ieee80211_rx_mgt);
1510 EXPORT_SYMBOL(ieee80211_rx);