summaryrefslogtreecommitdiffstats
path: root/package/madwifi/patches/371-wds_sta_separation.patch
blob: aded93b25f79768cd10bcf14be19ecf00bf91717 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -202,6 +202,7 @@
 	struct ieee80211com *ic = vap->iv_ic;
 	struct net_device *dev = vap->iv_dev;
 	struct ieee80211_node *ni_wds = NULL;
+	struct net_device_stats *stats;
 	struct ieee80211_frame *wh;
 	struct ieee80211_key *key;
 	struct ether_header *eh;
@@ -435,7 +436,7 @@
 
 	switch (type) {
 	case IEEE80211_FC0_TYPE_DATA:
-		hdrspace = ieee80211_hdrspace(ic, wh);
+		hdrspace = ieee80211_hdrsize(wh);
 		if (skb->len < hdrspace) {
 			IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
 				wh, "data", "too short: len %u, expecting %u",
@@ -446,15 +447,20 @@
 		switch (vap->iv_opmode) {
 		case IEEE80211_M_STA:
 			if ((dir != IEEE80211_FC1_DIR_FROMDS) &&
-			    (!((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
-			    (dir == IEEE80211_FC1_DIR_DSTODS)))) {
+			    (!(vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
+			     (dir == IEEE80211_FC1_DIR_DSTODS))) {
 				IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
 					wh, "data", "invalid dir 0x%x", dir);
 				vap->iv_stats.is_rx_wrongdir++;
 				goto out;
 			}
 
-	        	if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+			if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+				/* ignore 3-addr mcast if we're WDS STA */
+				if ((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
+					(dir != IEEE80211_FC1_DIR_DSTODS))
+					goto out;
+
 				/* Discard multicast if IFF_MULTICAST not set */
 				if ((0 != memcmp(wh->i_addr3, dev->broadcast, ETH_ALEN)) && 
 					(0 == (dev->flags & IFF_MULTICAST))) {
@@ -482,24 +488,6 @@
 					vap->iv_stats.is_rx_mcastecho++;
 					goto out;
 				}
-				/* 
-				 * if it is brodcasted by me on behalf of
-				 * a station behind me, drop it.
-				 */
-				if (vap->iv_flags_ext & IEEE80211_FEXT_WDS) {
-					struct ieee80211_node_table *nt;
-					struct ieee80211_node *ni_wds;
-					nt = &ic->ic_sta;
-					ni_wds = ieee80211_find_wds_node(nt, wh->i_addr3);
-					if (ni_wds) {
-						ieee80211_unref_node(&ni_wds);
-						IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
-							wh, NULL, "%s",
-							"multicast echo originated from node behind me");
-						vap->iv_stats.is_rx_mcastecho++;
-						goto out;
-					}
-				}
 			}
 			break;
 		case IEEE80211_M_IBSS:
@@ -541,6 +529,11 @@
 				vap->iv_stats.is_rx_notassoc++;
 				goto err;
 			}
+
+			/* subif isn't fully set up yet, drop the frame */
+			if (ni->ni_subif == ni->ni_vap)
+				goto err;
+
 			/*
 			 * If we're a 4 address packet, make sure we have an entry in
 			 * the node table for the packet source address (addr4).
@@ -548,9 +541,16 @@
 			 */
 
 			/* check for wds link first */
-			if (dir == IEEE80211_FC1_DIR_DSTODS) {
+			if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni->ni_subif) {
 				struct ieee80211vap *avp;
 
+				if (vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP) {
+					ieee80211_wds_addif(ni);
+					/* we must drop frames here until the interface has
+					 * been fully separated, otherwise a bridge might get
+					 * confused */
+					goto err;
+				}
 				TAILQ_FOREACH(avp, &vap->iv_wdslinks, iv_wdsnext) {
 					if (!memcmp(avp->wds_mac, wh->i_addr2, IEEE80211_ADDR_LEN)) {
 						IEEE80211_LOCK_IRQ(ni->ni_ic);
@@ -566,7 +566,7 @@
 			}
 
 			/* XXX: Useless node mgmt API; make better */
-			if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni_wds) {
+			if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni_wds && !ni->ni_subif) {
 				struct ieee80211_node_table *nt = &ic->ic_sta;
 				struct ieee80211_frame_addr4 *wh4;
 
@@ -626,6 +626,11 @@
 			goto out;
 		}
 
+		/* check if there is any data left */
+		hdrspace = ieee80211_hdrspace(ic, wh);
+		if (skb->len < hdrspace)
+			goto out;
+
 		/*
 		 * Handle privacy requirements.  Note that we
 		 * must not be preempted from here until after
@@ -698,8 +703,12 @@
 		if (! accept_data_frame(vap, ni, key, skb, eh))
 			goto out;
 
-		vap->iv_devstats.rx_packets++;
-		vap->iv_devstats.rx_bytes += skb->len;
+		if (ni->ni_subif && ((eh)->ether_type != __constant_htons(ETHERTYPE_PAE)))
+			stats = &ni->ni_subif->iv_devstats;
+		else
+			stats = &vap->iv_devstats;
+		stats->rx_packets++;
+		stats->rx_bytes += skb->len;
 		IEEE80211_NODE_STAT(ni, rx_data);
 		IEEE80211_NODE_STAT_ADD(ni, rx_bytes, skb->len);
 		ic->ic_lastdata = jiffies;
@@ -1132,6 +1141,13 @@
 		dev = vap->iv_xrvap->iv_dev;
 #endif
 
+	/* if the node has a wds subif, move data frames there,
+	 * but keep EAP traffic on the master */
+	if (ni->ni_subif && ((eh)->ether_type != __constant_htons(ETHERTYPE_PAE))) {
+		vap = ni->ni_subif;
+		dev = vap->iv_dev;
+	}
+
 	/* perform as a bridge within the vap */
 	/* XXX intra-vap bridging only */
 	if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
@@ -1157,7 +1173,15 @@
 			if (ni1 != NULL) {
 				if (ni1->ni_vap == vap &&
 				    ieee80211_node_is_authorized(ni1) &&
+					!ni1->ni_subif &&
 				    ni1 != vap->iv_bss) {
+
+					/* tried to bridge to a subif, drop the packet */
+					if (ni->ni_subif) {
+						ieee80211_dev_kfree_skb(&skb);
+						return;
+					}
+
 					skb1 = skb;
 					skb = NULL;
 				}
--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
@@ -649,6 +649,7 @@
 	IEEE80211_PARAM_BGSCAN_THRESH		= 79,	/* bg scan rssi threshold */
 	IEEE80211_PARAM_RSSI_DIS_THR	= 80,	/* rssi threshold for disconnection */
 	IEEE80211_PARAM_RSSI_DIS_COUNT	= 81,	/* counter for rssi threshold */
+	IEEE80211_PARAM_WDS_SEP			= 82,	/* move wds stations into separate interfaces */
 };
 
 #define	SIOCG80211STATS			(SIOCDEVPRIVATE+2)
--- a/net80211/ieee80211_node.h
+++ b/net80211/ieee80211_node.h
@@ -92,11 +92,13 @@
  * the ieee80211com structure.
  */
 struct ieee80211_node {
-	struct ieee80211vap *ni_vap;
+	struct ieee80211vap *ni_vap, *ni_subif;
 	struct ieee80211com *ni_ic;
 	struct ieee80211_node_table *ni_table;
 	TAILQ_ENTRY(ieee80211_node) ni_list;
 	LIST_ENTRY(ieee80211_node) ni_hash;
+	struct work_struct ni_create;	/* task for creating a subif */
+	struct work_struct ni_destroy;	/* task for destroying a subif */
 	atomic_t ni_refcnt;
 	u_int ni_scangen;			/* gen# for timeout scan */
 	u_int8_t ni_authmode;			/* authentication algorithm */
@@ -430,5 +432,6 @@
 void ieee80211_node_leave(struct ieee80211_node *);
 u_int8_t ieee80211_getrssi(struct ieee80211com *);
 int32_t ieee80211_get_node_count(struct ieee80211com *);
+void ieee80211_wds_addif(struct ieee80211_node *ni);
 #endif /* _NET80211_IEEE80211_NODE_H_ */
 
--- a/net80211/ieee80211_var.h
+++ b/net80211/ieee80211_var.h
@@ -322,6 +322,7 @@
 	u_int8_t ic_myaddr[IEEE80211_ADDR_LEN];
 	struct timer_list ic_inact;		/* mgmt/inactivity timer */
 
+	unsigned int ic_subifs;
 	u_int32_t ic_flags;			/* state flags */
 	u_int32_t ic_flags_ext;			/* extension of state flags */
 	u_int32_t ic_caps;			/* capabilities */
@@ -625,6 +626,7 @@
 #define IEEE80211_FEXT_DROPUNENC_EAPOL	0x00000800	/* CONF: drop unencrypted eapol frames */
 #define IEEE80211_FEXT_APPIE_UPDATE	0x00001000	/* STATE: beacon APP IE updated */
 #define IEEE80211_FEXT_BGSCAN_THR	0x00002000	/* bgscan due to low rssi */
+#define IEEE80211_FEXT_WDSSEP		0x00004000	/* move wds clients into separate interfaces */
 
 #define IEEE80211_COM_UAPSD_ENABLE(_ic)		((_ic)->ic_flags_ext |= IEEE80211_FEXT_UAPSD)
 #define IEEE80211_COM_UAPSD_DISABLE(_ic)	((_ic)->ic_flags_ext &= ~IEEE80211_FEXT_UAPSD)
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
@@ -2867,6 +2867,14 @@
 		else
 			vap->iv_minrateindex = 0;
 		break;
+	case IEEE80211_PARAM_WDS_SEP:
+		if (vap->iv_opmode != IEEE80211_M_HOSTAP)
+			retv = -EINVAL;
+		else if (value)
+			vap->iv_flags_ext |= IEEE80211_FEXT_WDSSEP;
+		else
+			vap->iv_flags_ext &= ~IEEE80211_FEXT_WDSSEP;
+		break;
 #ifdef ATH_REVERSE_ENGINEERING
 	case IEEE80211_PARAM_DUMPREGS:
 		ieee80211_dump_registers(dev, info, w, extra);
@@ -3223,6 +3231,9 @@
 	case IEEE80211_PARAM_MINRATE:
 		param[0] = vap->iv_minrateindex;
 		break;
+	case IEEE80211_PARAM_WDS_SEP:
+		param[0] = !!(vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP);
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -4447,6 +4458,8 @@
 	struct ieee80211vap *vap = ni->ni_vap;
 	size_t ielen;
 
+	if (req->vap->iv_wdsnode && ni->ni_subif)
+		vap = ni->ni_subif;
 	if (vap != req->vap && vap != req->vap->iv_xrvap)	/* only entries for this vap */
 		return;
 	if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
@@ -4466,6 +4479,8 @@
 	size_t ielen, len;
 	u_int8_t *cp;
 
+	if (req->vap->iv_wdsnode && ni->ni_subif)
+		vap = ni->ni_subif;
 	if (vap != req->vap && vap != req->vap->iv_xrvap)	/* only entries for this vap (or) xrvap */
 		return;
 	if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
@@ -5767,6 +5782,10 @@
 	 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_minrate"},
 	{ IEEE80211_IOCTL_SETSCANLIST,
 	 IW_PRIV_TYPE_CHAR | 255, 0, "setscanlist"},
+	{ IEEE80211_PARAM_WDS_SEP,
+	 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "wdssep"},
+	{ IEEE80211_PARAM_WDS_SEP,
+	 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_wdssep"},
 
 #ifdef ATH_REVERSE_ENGINEERING
 	/*
@@ -5890,6 +5909,8 @@
 ieee80211_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	struct ieee80211vap *vap = dev->priv;
+	struct ieee80211com *ic = vap->iv_ic;
+	struct ieee80211_node *ni;
 
 	switch (cmd) {
 	case SIOCG80211STATS:
@@ -5898,8 +5919,20 @@
 	case SIOC80211IFDESTROY:
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
+		/* drop all node subifs */
+		TAILQ_FOREACH(ni, &ic->ic_sta.nt_node, ni_list) {
+			struct ieee80211vap *avp = ni->ni_subif;
+
+			if (ni->ni_vap != vap)
+				continue;
+			if (!avp)
+				continue;
+			ni->ni_subif = NULL;
+			ieee80211_stop(avp->iv_dev);
+			ic->ic_vap_delete(avp);
+		}
 		ieee80211_stop(vap->iv_dev);	/* force state before cleanup */
-		vap->iv_ic->ic_vap_delete(vap);
+		ic->ic_vap_delete(vap);
 		return 0;
 	case IEEE80211_IOCTL_GETKEY:
 		return ieee80211_ioctl_getkey(dev, (struct iwreq *) ifr);
--- a/net80211/ieee80211_node.c
+++ b/net80211/ieee80211_node.c
@@ -47,6 +47,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/random.h>
+#include <linux/rtnetlink.h>
 
 #include "if_media.h"
 
@@ -236,7 +237,11 @@
 ieee80211_node_vdetach(struct ieee80211vap *vap)
 {
 	struct ieee80211com *ic = vap->iv_ic;
+	struct ieee80211_node *ni;
 
+	ni = vap->iv_wdsnode;
+	if (ni)
+		ni->ni_subif = NULL;
 	ieee80211_node_table_reset(&ic->ic_sta, vap);
 	if (vap->iv_bss != NULL) {
 		ieee80211_unref_node(&vap->iv_bss);
@@ -1134,6 +1139,57 @@
 	return ni;
 }
 
+#define WDSIFNAME ".sta%d"
+static void
+ieee80211_wds_do_addif(struct work_struct *work)
+{
+	struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_create);
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ieee80211com *ic = vap->iv_ic;
+	struct ieee80211vap *avp;
+	char *name;
+
+	rtnl_lock();
+	/* did we get cancelled by the destroy call? */
+	if (!ni->ni_subif)
+		goto done;
+
+	ni->ni_subif = NULL;
+	name = kmalloc(strlen(vap->iv_dev->name) + sizeof(WDSIFNAME) + 1, GFP_KERNEL);
+	if (!name)
+		goto done;
+
+	strcpy(name, vap->iv_dev->name);
+	strcat(name, WDSIFNAME);
+	avp = ieee80211_create_vap(ic, name, ic->ic_dev, IEEE80211_M_WDS, 0, vap);
+	kfree(name);
+	if (!avp)
+		goto done;
+
+	memcpy(avp->wds_mac, ni->ni_bssid, IEEE80211_ADDR_LEN);
+	avp->iv_wdsnode = ieee80211_ref_node(ni);
+	ni->ni_subif = avp;
+	ic->ic_subifs++;
+
+done:
+	rtnl_unlock();
+	ieee80211_unref_node(&ni);
+}
+#undef WDSIFNAME
+
+void ieee80211_wds_addif(struct ieee80211_node *ni)
+{
+	/* check if the node is split out already,
+	 * or if we're in progress of setting up a new interface already */
+	if (ni->ni_subif)
+		return;
+
+	ieee80211_ref_node(ni);
+	ni->ni_subif = ni->ni_vap;
+	IEEE80211_INIT_WORK(&ni->ni_create, ieee80211_wds_do_addif);
+	schedule_work(&ni->ni_create);
+}
+
 /* Add wds address to the node table */
 int
 #ifdef IEEE80211_DEBUG_REFCNT
@@ -2254,6 +2310,36 @@
 	}
 }
 
+static void
+ieee80211_subif_destroy(struct work_struct *work)
+{
+	struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_destroy);
+	struct ieee80211vap *vap;
+	struct ieee80211com *ic;
+
+	rtnl_lock();
+	vap = ni->ni_subif;
+
+	/* if addif is waiting for the timer to fire, cancel! */
+	if (vap == ni->ni_vap) {
+		ni->ni_subif = NULL;
+		goto done;
+	}
+
+	if (!vap)
+		goto done;
+
+	ic = vap->iv_ic;
+	ni->ni_subif = NULL;
+	ieee80211_stop(vap->iv_dev);
+	ic->ic_vap_delete(vap);
+	ic->ic_subifs--;
+
+done:
+	ieee80211_unref_node(&ni);
+	rtnl_unlock();
+}
+
 /*
  * Handle bookkeeping for a station/neighbor leaving
  * the bss when operating in ap or adhoc modes.
@@ -2270,6 +2356,12 @@
 			ni, "station with aid %d leaves (refcnt %u)",
 			IEEE80211_NODE_AID(ni), atomic_read(&ni->ni_refcnt));
 
+	if (ni->ni_subif) {
+		ieee80211_ref_node(ni);
+		IEEE80211_INIT_WORK(&ni->ni_destroy, ieee80211_subif_destroy);
+		schedule_work(&ni->ni_destroy);
+	}
+
 	/* From this point onwards we can no longer find the node,
 	 * so no more references are generated
 	 */
--- a/net80211/ieee80211_linux.h
+++ b/net80211/ieee80211_linux.h
@@ -81,6 +81,12 @@
 #endif
 }
 
+#ifndef container_of
+#define container_of(ptr, type, member) ({          \
+    const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+	    (type *)( (char *)__mptr - offsetof(type,member) );})
+#endif
+
 /*
  * Task deferral
  *
@@ -113,6 +119,29 @@
 
 #define	IEEE80211_RESCHEDULE	schedule
 
+#include <linux/sched.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
+#include <linux/tqueue.h>
+#define work_struct			tq_struct
+#define schedule_work(t)		schedule_task((t))
+#define flush_scheduled_work()		flush_scheduled_tasks()
+#define IEEE80211_INIT_WORK(t, f) do { 			\
+	memset((t), 0, sizeof(struct tq_struct)); \
+	(t)->routine = (void (*)(void*)) (f); 	\
+	(t)->data=(void *) (t);			\
+} while (0)
+#else
+#include <linux/workqueue.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#define IEEE80211_INIT_WORK(_t, _f)	INIT_WORK((_t), (void (*)(void *))(_f), (_t));
+#else
+#define IEEE80211_INIT_WORK(_t, _f)	INIT_WORK((_t), (_f));
+#endif
+
+#endif /* KERNEL_VERSION < 2.5.41 */
+
+
 /* Locking */
 /* NB: beware, spin_is_locked() is not usefully defined for !(DEBUG || SMP)
  * because spinlocks do not exist in this configuration. Instead IRQs 
@@ -167,6 +196,18 @@
 	IEEE80211_VAPS_LOCK_ASSERT(_ic);		\
 	spin_unlock_bh(&(_ic)->ic_vapslock);		\
 } while (0)
+#define	IEEE80211_VAPS_LOCK_IRQ(_ic) do {					\
+	unsigned long __vlockflags;					\
+	IEEE80211_VAPS_LOCK_CHECK(_ic);					\
+	spin_lock_irqsave(&(_ic)->ic_vapslock, __vlockflags);
+#define	IEEE80211_VAPS_UNLOCK_IRQ(_ic)					\
+	IEEE80211_VAPS_LOCK_ASSERT(_ic);					\
+	spin_unlock_irqrestore(&(_ic)->ic_vapslock, __vlockflags);	\
+} while (0)
+#define	IEEE80211_VAPS_UNLOCK_IRQ_EARLY(_ic)					\
+	IEEE80211_VAPS_LOCK_ASSERT(_ic);					\
+	spin_unlock_irqrestore(&(_ic)->ic_vapslock, __vlockflags);
+
 
 #if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
 #define IEEE80211_VAPS_LOCK_ASSERT(_ic) \
--- a/net80211/ieee80211_proto.c
+++ b/net80211/ieee80211_proto.c
@@ -1081,6 +1081,8 @@
 int
 ieee80211_open(struct net_device *dev)
 {
+	struct ieee80211vap *vap = dev->priv;
+
 	return ieee80211_init(dev, 0);
 }
 
@@ -1116,11 +1118,33 @@
 	struct ieee80211vap *vap = dev->priv;
 	struct ieee80211com *ic = vap->iv_ic;
 	struct net_device *parent = ic->ic_dev;
+	struct ieee80211_node *tni, *ni;
 
 	IEEE80211_DPRINTF(vap,
 		IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
 		"%s\n", "stop running");
 
+	/* get rid of all wds nodes while we're still locked */
+	do {
+		ni = NULL;
+
+		IEEE80211_NODE_TABLE_LOCK_IRQ(&ic->ic_sta);
+		TAILQ_FOREACH(tni, &ic->ic_sta.nt_node, ni_list) {
+			if (tni->ni_vap != vap)
+				continue;
+			if (!tni->ni_subif)
+				continue;
+			ni = tni;
+			break;
+		}
+		IEEE80211_NODE_TABLE_UNLOCK_IRQ(&ic->ic_sta);
+
+		if (!ni)
+			break;
+
+		ieee80211_node_leave(ni);
+	} while (1);
+
 	ieee80211_new_state(vap, IEEE80211_S_INIT, -1);
 	if (dev->flags & IFF_RUNNING) {
 		dev->flags &= ~IFF_RUNNING;		/* mark us stopped */
@@ -1342,9 +1366,9 @@
 	struct ieee80211com *ic = vap->iv_ic;
 	int rc;
 
-	IEEE80211_VAPS_LOCK_BH(ic);
+	IEEE80211_VAPS_LOCK_IRQ(ic);
 	rc = vap->iv_newstate(vap, nstate, arg);
-	IEEE80211_VAPS_UNLOCK_BH(ic);
+	IEEE80211_VAPS_UNLOCK_IRQ(ic);
 	return rc;
 }
 
@@ -1630,6 +1654,7 @@
 		 */
 		if (ni->ni_authmode != IEEE80211_AUTH_8021X)
 			ieee80211_node_authorize(ni);
+
 #ifdef ATH_SUPERG_XR
 		/*
 		 * fire a timer to bring up XR vap if configured.
@@ -1885,8 +1910,15 @@
 		if (ostate == IEEE80211_S_SCAN || 
 		    ostate == IEEE80211_S_AUTH ||
 		    ostate == IEEE80211_S_ASSOC) {
+
 			/* Transition (S_SCAN|S_AUTH|S_ASSOC) -> S_RUN */
 			__ieee80211_newstate(vap, nstate, arg);
+
+			/* if we're in wds, let the ap know that we're doing this */
+			if ((vap->iv_opmode == IEEE80211_M_STA) &&
+				(vap->iv_flags_ext & IEEE80211_FEXT_WDS))
+					ieee80211_send_nulldata(ieee80211_ref_node(vap->iv_bss));
+
 			/* Then bring up all other vaps pending on the scan */
 			dstate = get_dominant_state(ic);
 			if (dstate == IEEE80211_S_RUN) {
--- a/net80211/ieee80211.c
+++ b/net80211/ieee80211.c
@@ -373,10 +373,25 @@
 ieee80211_ifdetach(struct ieee80211com *ic)
 {
 	struct ieee80211vap *vap;
+	int count;
+
+	/* bring down all vaps */
+	TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+		ieee80211_stop(vap->iv_dev);
+	}
+
+	/* wait for all subifs to disappear */
+	do {
+		schedule();
+		rtnl_lock();
+		count = ic->ic_subifs;
+		rtnl_unlock();
+	} while (count > 0);
 
 	rtnl_lock();
-	while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
+	while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) {
 		ic->ic_vap_delete(vap);
+	}
 	rtnl_unlock();
 
 	del_timer(&ic->ic_dfs_excl_timer);
@@ -599,8 +614,10 @@
 
 	IEEE80211_CANCEL_TQUEUE(&vap->iv_stajoin1tq);
 	IEEE80211_LOCK_IRQ(ic);
-	if (vap->iv_wdsnode)
+	if (vap->iv_wdsnode) {
+		vap->iv_wdsnode->ni_subif = NULL;
 		ieee80211_unref_node(&vap->iv_wdsnode);
+	}
 	if ((vap->iv_opmode == IEEE80211_M_WDS) &&
 		(vap->iv_master != NULL))
 		TAILQ_REMOVE(&vap->iv_master->iv_wdslinks, vap, iv_wdsnext);
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -79,28 +79,6 @@
 #define	tasklet_enable(t)	do { (void) t; local_bh_enable(); } while (0)
 #endif /* !DECLARE_TASKLET */
 
-#include <linux/sched.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
-#include <linux/tqueue.h>
-#define work_struct			tq_struct
-#define schedule_work(t)		schedule_task((t))
-#define flush_scheduled_work()		flush_scheduled_tasks()
-#define ATH_INIT_WORK(t, f) do { 			\
-	memset((t), 0, sizeof(struct tq_struct)); \
-	(t)->routine = (void (*)(void*)) (f); 	\
-	(t)->data=(void *) (t);			\
-} while (0)
-#else
-#include <linux/workqueue.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
-#define ATH_INIT_WORK(_t, _f)	INIT_WORK((_t), (void (*)(void *))(_f), (_t));
-#else
-#define ATH_INIT_WORK(_t, _f)	INIT_WORK((_t), (_f));
-#endif
-
-#endif /* KERNEL_VERSION < 2.5.41 */
-
 /*
  * Guess how the interrupt handler should work.
  */
--- a/net80211/ieee80211_output.c
+++ b/net80211/ieee80211_output.c
@@ -261,6 +261,10 @@
 		goto bad;
 	}
 
+	if (ni->ni_subif && (vap != ni->ni_subif) &&
+		((eh)->ether_type != __constant_htons(ETHERTYPE_PAE)))
+		goto bad;
+
 	/* calculate priority so drivers can find the TX queue */
 	if (ieee80211_classify(ni, skb)) {
 		IEEE80211_NOTE(vap, IEEE80211_MSG_OUTPUT, ni,
@@ -340,20 +344,33 @@
  * constructing a frame as it sets i_fc[1]; other bits can
  * then be or'd in.
  */
-static void
+static struct ieee80211_frame *
 ieee80211_send_setup(struct ieee80211vap *vap,
 	struct ieee80211_node *ni,
-	struct ieee80211_frame *wh,
+	struct sk_buff *skb,
 	int type,
 	const u_int8_t sa[IEEE80211_ADDR_LEN],
 	const u_int8_t da[IEEE80211_ADDR_LEN],
 	const u_int8_t bssid[IEEE80211_ADDR_LEN])
 {
 #define	WH4(wh)	((struct ieee80211_frame_addr4 *)wh)
+	struct ieee80211_frame *wh;
+	int len = sizeof(struct ieee80211_frame);
+	int opmode = vap->iv_opmode;
+
+	if ((type & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA) {
+		if ((opmode == IEEE80211_M_STA) &&
+			(vap->iv_flags_ext & IEEE80211_FEXT_WDS))
+			opmode = IEEE80211_M_WDS;
+
+		if (opmode == IEEE80211_M_WDS)
+			len = sizeof(struct ieee80211_frame_addr4);
+	}
 
+	wh = (struct ieee80211_frame *)skb_push(skb, len);
 	wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | type;
 	if ((type & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA) {
-		switch (vap->iv_opmode) {
+		switch (opmode) {
 		case IEEE80211_M_STA:
 			wh->i_fc[1] = IEEE80211_FC1_DIR_TODS;
 			IEEE80211_ADDR_COPY(wh->i_addr1, bssid);
@@ -395,6 +412,8 @@
 	*(__le16 *)&wh->i_seq[0] =
 	    htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT);
 	ni->ni_txseqs[0]++;
+
+	return wh;
 #undef WH4
 }
 
@@ -416,9 +435,7 @@
 
 	SKB_CB(skb)->ni = ni;
 
-	wh = (struct ieee80211_frame *)
-		skb_push(skb, sizeof(struct ieee80211_frame));
-	ieee80211_send_setup(vap, ni, wh,
+	wh = ieee80211_send_setup(vap, ni, skb,
 		IEEE80211_FC0_TYPE_MGT | type,
 		vap->iv_myaddr, ni->ni_macaddr, vap->iv_bssid);
 	/* XXX power management */
@@ -464,6 +481,9 @@
 	struct ieee80211_frame *wh;
 	u_int8_t *frm;
 
+	if (ni->ni_subif)
+		vap = ni->ni_subif;
+
 	skb = ieee80211_getmgtframe(&frm, 0);
 	if (skb == NULL) {
 		/* XXX debug msg */
@@ -472,9 +492,7 @@
 		return -ENOMEM;
 	}
 
-	wh = (struct ieee80211_frame *)
-		skb_push(skb, sizeof(struct ieee80211_frame));
-	ieee80211_send_setup(vap, ni, wh,
+	wh = ieee80211_send_setup(vap, ni, skb,
 		IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NODATA,
 		vap->iv_myaddr, ni->ni_macaddr, vap->iv_bssid);
 	/* NB: power management bit is never sent by an AP */
@@ -512,6 +530,7 @@
 	struct sk_buff *skb;
 	struct ieee80211_qosframe *qwh;
 	u_int8_t *frm;
+	u_int8_t *i_qos;
 	int tid;
 
 	skb = ieee80211_getmgtframe(&frm, 2);
@@ -523,11 +542,12 @@
 	SKB_CB(skb)->ni = ieee80211_ref_node(ni);
 
 	skb->priority = ac;
-	qwh = (struct ieee80211_qosframe *)skb_push(skb, sizeof(struct ieee80211_qosframe));
 
-	qwh = (struct ieee80211_qosframe *)skb->data;
+	/* grab a pointer to QoS control and also compensate for the header length
+	 * difference between QoS and non-QoS frame */
+	i_qos = skb_push(skb, sizeof(struct ieee80211_qosframe) - sizeof(struct ieee80211_frame));
 
-	ieee80211_send_setup(vap, ni, (struct ieee80211_frame *)qwh,
+	qwh = (struct ieee80211_qosframe *) ieee80211_send_setup(vap, ni, skb,
 		IEEE80211_FC0_TYPE_DATA,
 		vap->iv_myaddr, /* SA */
 		ni->ni_macaddr, /* DA */
@@ -541,10 +561,10 @@
 
 	/* map from access class/queue to 11e header priority value */
 	tid = WME_AC_TO_TID(ac);
-	qwh->i_qos[0] = tid & IEEE80211_QOS_TID;
+	i_qos[0] = tid & IEEE80211_QOS_TID;
 	if (ic->ic_wme.wme_wmeChanParams.cap_wmeParams[ac].wmep_noackPolicy)
 		qwh->i_qos[0] |= (1 << IEEE80211_QOS_ACKPOLICY_S) & IEEE80211_QOS_ACKPOLICY;
-	qwh->i_qos[1] = 0;
+	i_qos[1] = 0;
 
 	IEEE80211_NODE_STAT(ni, tx_data);
 
@@ -786,6 +806,8 @@
 		hdrsize = sizeof(struct ieee80211_frame);
 
 	SKB_CB(skb)->auth_pkt = (eh.ether_type == __constant_htons(ETHERTYPE_PAE));
+	if (!SKB_CB(skb)->auth_pkt && ni->ni_subif)
+		vap = ni->ni_subif;
 
 	switch (vap->iv_opmode) {
 	case IEEE80211_M_IBSS:
@@ -805,20 +827,9 @@
 			ismulticast = IEEE80211_IS_MULTICAST(eh.ether_dhost);
 		break;
 	case IEEE80211_M_STA:
-		if ((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
-		    !IEEE80211_ADDR_EQ(eh.ether_shost, vap->iv_myaddr)) {
+		if (vap->iv_flags_ext & IEEE80211_FEXT_WDS) {
 			use4addr = 1;
-			ismulticast = IEEE80211_IS_MULTICAST(ni->ni_macaddr);
-			/* Add a WDS entry to the station VAP */
-			if (IEEE80211_IS_MULTICAST(eh.ether_dhost)) {
-				struct ieee80211_node_table *nt = &ic->ic_sta;
-				struct ieee80211_node *ni_wds 
-					= ieee80211_find_wds_node(nt, eh.ether_shost);
-				if (ni_wds)
-					ieee80211_unref_node(&ni_wds);
-				else
-					ieee80211_add_wds_addr(nt, ni, eh.ether_shost, 0);
-			}
+			ismulticast = 0;
 		} else
 			ismulticast = IEEE80211_IS_MULTICAST(vap->iv_bssid);
 		break;
@@ -1689,9 +1700,7 @@
 
 	SKB_CB(skb)->ni = ieee80211_ref_node(ni);
 
-	wh = (struct ieee80211_frame *)
-		skb_push(skb, sizeof(struct ieee80211_frame));
-	ieee80211_send_setup(vap, ni, wh,
+	wh = ieee80211_send_setup(vap, ni, skb,
 		IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ,
 		sa, da, bssid);
 	/* XXX power management? */
--- a/net80211/ieee80211_linux.c
+++ b/net80211/ieee80211_linux.c
@@ -145,7 +145,7 @@
 	struct sk_buff *skb;
 	u_int len;
 
-	len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4);
+	len = roundup(sizeof(struct ieee80211_frame_addr4) + pktlen, 4);
 #ifdef IEEE80211_DEBUG_REFCNT
 	skb = ieee80211_dev_alloc_skb_debug(len + align - 1, func, line);
 #else
@@ -161,7 +161,7 @@
 		SKB_CB(skb)->flags = 0;
 		SKB_CB(skb)->next = NULL;
 
-		skb_reserve(skb, sizeof(struct ieee80211_frame));
+		skb_reserve(skb, sizeof(struct ieee80211_frame_addr4));
 		*frm = skb_put(skb, pktlen);
 	}
 	return skb;