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
|
--- a/net80211/ieee80211_node.c
+++ b/net80211/ieee80211_node.c
@@ -123,6 +123,9 @@ static void ieee80211_node_table_cleanup
static void ieee80211_node_table_reset(struct ieee80211_node_table *,
struct ieee80211vap *);
+static struct ieee80211_node *
+lookup_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap, const u_int8_t *addr);
+
MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
void
@@ -697,7 +700,7 @@ ieee80211_sta_join(struct ieee80211vap *
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
- ni = ieee80211_find_node(&ic->ic_sta, se->se_macaddr);
+ ni = lookup_rxnode(ic, vap, se->se_macaddr);
if (ni == NULL) {
ni = ieee80211_alloc_node_table(vap, se->se_macaddr);
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
@@ -1391,6 +1394,53 @@ ieee80211_add_neighbor(struct ieee80211v
return ni;
}
+struct ieee80211vap *
+ieee80211_find_rxvap(struct ieee80211com *ic, const u_int8_t *mac)
+{
+ struct ieee80211vap *vap;
+
+ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+ if (IEEE80211_ADDR_EQ(vap->iv_myaddr, mac))
+ return vap;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(ieee80211_find_rxvap);
+
+static struct ieee80211_node *
+lookup_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap,
+ const u_int8_t *addr)
+{
+ struct ieee80211_node_table *nt;
+ struct ieee80211_node *ni = NULL;
+ int use_bss = 0;
+ int hash;
+
+ nt = &ic->ic_sta;
+ IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
+ hash = IEEE80211_NODE_HASH(addr);
+ LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
+ if (IEEE80211_ADDR_EQ(ni->ni_macaddr, addr)) {
+ /* allow multiple nodes on different vaps */
+ if (vap && (ni->ni_vap != vap))
+ continue;
+
+ ieee80211_ref_node(ni);
+ goto out;
+ }
+ }
+
+ /* no match found */
+ ni = NULL;
+
+out:
+ IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
+ return ni;
+#undef IS_PSPOLL
+#undef IS_CTL
+}
+
+
/*
* Return the node for the sender of a frame; if the sender is unknown return
* NULL. The caller is expected to deal with this. (The frame is sent to all
@@ -1400,10 +1450,10 @@ ieee80211_add_neighbor(struct ieee80211v
*/
struct ieee80211_node *
#ifdef IEEE80211_DEBUG_REFCNT
-ieee80211_find_rxnode_debug(struct ieee80211com *ic,
+ieee80211_find_rxnode_debug(struct ieee80211com *ic, struct ieee80211vap *vap,
const struct ieee80211_frame_min *wh, const char *func, int line)
#else
-ieee80211_find_rxnode(struct ieee80211com *ic,
+ieee80211_find_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap,
const struct ieee80211_frame_min *wh)
#endif
{
@@ -1411,9 +1461,8 @@ ieee80211_find_rxnode(struct ieee80211co
((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
#define IS_PSPOLL(wh) \
((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
- struct ieee80211_node_table *nt;
- struct ieee80211_node *ni;
- struct ieee80211vap *vap, *avp;
+ struct ieee80211_node *ni = NULL;
+ struct ieee80211vap *avp;
const u_int8_t *addr;
if (IS_CTL(wh) && !IS_PSPOLL(wh) /*&& !IS_RTS(ah)*/)
@@ -1426,32 +1475,21 @@ ieee80211_find_rxnode(struct ieee80211co
/* XXX check ic_bss first in station mode */
/* XXX 4-address frames? */
- nt = &ic->ic_sta;
- IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) {
- TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+ if (vap) { /* assume unicast if vap is set, mcast not supported for wds */
TAILQ_FOREACH(avp, &vap->iv_wdslinks, iv_wdsnext) {
- if (!IEEE80211_ADDR_EQ(addr, avp->wds_mac))
+ if (!IEEE80211_ADDR_EQ(addr, avp->wds_mac) ||
+ !IEEE80211_ADDR_EQ(wh->i_addr1, avp->iv_myaddr))
continue;
if (avp->iv_wdsnode)
- return ieee80211_ref_node(avp->iv_wdsnode);
- else
- return NULL;
+ ni = ieee80211_ref_node(avp->iv_wdsnode);
}
}
+ return ni;
}
-#ifdef IEEE80211_DEBUG_REFCNT
- ni = ieee80211_find_node_locked_debug(nt, addr, func, line);
-#else
- ni = ieee80211_find_node_locked(nt, addr);
-#endif
- IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
-
- return ni;
-#undef IS_PSPOLL
-#undef IS_CTL
+ return lookup_rxnode(ic, vap, addr);
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_rxnode_debug);
@@ -1476,15 +1514,14 @@ ieee80211_find_txnode(struct ieee80211va
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node_table *nt;
struct ieee80211_node *ni = NULL;
+ int hash;
- IEEE80211_LOCK_IRQ(ic);
if (vap->iv_opmode == IEEE80211_M_WDS) {
if (vap->iv_wdsnode && (vap->iv_state == IEEE80211_S_RUN))
return ieee80211_ref_node(vap->iv_wdsnode);
else
return NULL;
}
- IEEE80211_UNLOCK_IRQ(ic);
/*
* The destination address should be in the node table
@@ -1502,11 +1539,22 @@ ieee80211_find_txnode(struct ieee80211va
/* XXX: Can't hold lock across dup_bss due to recursive locking. */
nt = &vap->iv_ic->ic_sta;
IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
+ hash = IEEE80211_NODE_HASH(mac);
+ LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
+ if (ni->ni_vap != vap)
+ continue;
+
+ if (IEEE80211_ADDR_EQ(ni->ni_macaddr, mac)) {
#ifdef IEEE80211_DEBUG_REFCNT
- ni = ieee80211_find_node_locked_debug(nt, mac, func, line);
+ ieee80211_ref_node_debug(ni, func, line);
#else
- ni = ieee80211_find_node_locked(nt, mac);
+ ieee80211_ref_node(ni);
#endif
+ goto found;
+ }
+ }
+ ni = NULL;
+found:
IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
if (ni == NULL) {
@@ -1961,13 +2009,29 @@ remove_worse_nodes(void *arg, struct iee
}
}
+static void
+remove_duplicate_nodes(void *arg, struct ieee80211_node *ni)
+{
+ struct ieee80211_node *rni = arg;
+
+ if (ni == rni)
+ return;
+
+ if (ni->ni_vap == rni->ni_vap)
+ return;
+
+ ieee80211_node_leave(ni);
+}
+
void
ieee80211_node_join(struct ieee80211_node *ni, int resp)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
+ struct ieee80211_node *tni;
int newassoc;
+ ieee80211_iterate_nodes(&ic->ic_sta, remove_duplicate_nodes, ni);
if (ni->ni_associd == 0) {
u_int16_t aid;
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -227,15 +227,22 @@ ieee80211_input(struct ieee80211vap * va
if (!dev)
goto out;
+ if ((vap->iv_dev->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
+ goto out;
+
+ if (!vap->iv_bss)
+ goto out;
+
/* initialize ni as in the previous API */
if (ni_or_null == NULL) {
/* This function does not 'own' vap->iv_bss, so we cannot
* guarantee its existence during the following call, hence
* briefly grab our own reference. */
ni = ieee80211_ref_node(vap->iv_bss);
+ KASSERT(ni != NULL, ("null node"));
+ } else {
+ ni->ni_inact = ni->ni_inact_reload;
}
- KASSERT(ni != NULL, ("null node"));
- ni->ni_inact = ni->ni_inact_reload;
KASSERT(skb->len >= sizeof(struct ieee80211_frame_min),
("frame length too short: %u", skb->len));
@@ -933,16 +940,23 @@ int
ieee80211_input_all(struct ieee80211com *ic,
struct sk_buff *skb, int rssi, u_int64_t rtsf)
{
+ struct ieee80211_frame_min *wh = (struct ieee80211_frame_min *) skb->data;
struct ieee80211vap *vap;
int type = -1;
/* XXX locking */
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+ struct ieee80211_node *ni = NULL;
struct sk_buff *skb1;
if ((vap->iv_dev->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
continue;
+ if ((vap->iv_opmode == IEEE80211_M_HOSTAP) &&
+ !IEEE80211_IS_MULTICAST(wh->i_addr1))
+ continue;
+
+ ni = ieee80211_find_rxnode(ic, vap, wh);
if (TAILQ_NEXT(vap, iv_next) != NULL) {
skb1 = skb_copy(skb, GFP_ATOMIC);
if (skb1 == NULL) {
@@ -954,8 +968,10 @@ ieee80211_input_all(struct ieee80211com
skb1 = skb;
skb = NULL;
}
- type = ieee80211_input(vap, NULL, skb1, rssi, rtsf);
+ type = ieee80211_input(vap, ni, skb1, rssi, rtsf);
}
+
+out:
if (skb != NULL) /* no vaps, reclaim skb */
ieee80211_dev_kfree_skb(&skb);
return type;
@@ -1146,11 +1162,9 @@ ieee80211_deliver_data(struct ieee80211_
* sending it will not work; just let it be
* delivered normally.
*/
- struct ieee80211_node *ni1 = ieee80211_find_node(
- &vap->iv_ic->ic_sta, eh->ether_dhost);
+ struct ieee80211_node *ni1 = ieee80211_find_txnode(vap, eh->ether_dhost);
if (ni1 != NULL) {
- if (ni1->ni_vap == vap &&
- ieee80211_node_is_authorized(ni1) &&
+ if (ieee80211_node_is_authorized(ni1) &&
!ni1->ni_subif &&
ni1 != vap->iv_bss) {
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -6577,9 +6577,8 @@ ath_recv_mgmt(struct ieee80211vap * vap,
sc->sc_recv_mgmt(vap, ni_or_null, skb, subtype, rssi, rtsf);
-
/* Lookup the new node if any (this grabs a reference to it) */
- ni = ieee80211_find_rxnode(vap->iv_ic,
+ ni = ieee80211_find_rxnode(vap->iv_ic, vap,
(const struct ieee80211_frame_min *)skb->data);
if (ni == NULL) {
DPRINTF(sc, ATH_DEBUG_BEACON, "Dropping; node unknown.\n");
@@ -6734,7 +6733,9 @@ ath_rx_poll(struct net_device *dev, int
struct ath_desc *ds;
struct ath_rx_status *rs;
struct sk_buff *skb = NULL;
+ struct ieee80211vap *vap;
struct ieee80211_node *ni;
+ const struct ieee80211_frame_min *wh;
unsigned int len;
int type;
u_int phyerr;
@@ -6889,12 +6890,15 @@ rx_accept:
skb_trim(skb, skb->len - IEEE80211_CRC_LEN);
if (mic_fail) {
+ wh = (const struct ieee80211_frame_min *) skb->data;
+
/* Ignore control frames which are reported with mic error */
- if ((((struct ieee80211_frame *)skb->data)->i_fc[0] &
+ if ((wh->i_fc[0] &
IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
goto drop_micfail;
- ni = ieee80211_find_rxnode(ic, (const struct ieee80211_frame_min *) skb->data);
+ vap = ieee80211_find_rxvap(ic, wh->i_addr1);
+ ni = ieee80211_find_rxnode(ic, vap, wh);
if (ni && ni->ni_table) {
ieee80211_check_mic(ni, skb);
@@ -6956,11 +6960,24 @@ drop_micfail:
* for its use. If the sender is unknown spam the
* frame; it'll be dropped where it's not wanted.
*/
- if (rs->rs_keyix != HAL_RXKEYIX_INVALID &&
+ wh = (const struct ieee80211_frame_min *) skb->data;
+ if ((rs->rs_keyix != HAL_RXKEYIX_INVALID) &&
(ni = sc->sc_keyixmap[rs->rs_keyix]) != NULL) {
/* Fast path: node is present in the key map;
* grab a reference for processing the frame. */
- ni = ieee80211_ref_node(ni);
+ ieee80211_ref_node(ni);
+ if ((ATH_GET_VAP_ID(wh->i_addr1) !=
+ ATH_GET_VAP_ID(ni->ni_vap->iv_myaddr)) ||
+ ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) ==
+ IEEE80211_FC1_DIR_DSTODS)) {
+ /* key cache node lookup is fast, but it can
+ * lead to problems in multi-bss (foreign vap
+ * node reference) or wds (wdsap node ref instead
+ * of base ap node ref).
+ * use slowpath lookup in both cases
+ */
+ goto lookup_slowpath;
+ }
ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi);
type = ieee80211_input(ni->ni_vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
ieee80211_unref_node(&ni);
@@ -6969,24 +6986,35 @@ drop_micfail:
* No key index or no entry, do a lookup and
* add the node to the mapping table if possible.
*/
- ni = ieee80211_find_rxnode(ic,
- (const struct ieee80211_frame_min *)skb->data);
+
+lookup_slowpath:
+ vap = ieee80211_find_rxvap(ic, wh->i_addr1);
+ if (vap)
+ ni = ieee80211_find_rxnode(ic, vap, wh);
+ else
+ ni = NULL;
+
if (ni != NULL) {
ieee80211_keyix_t keyix;
ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi);
- type = ieee80211_input(ni->ni_vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
+ type = ieee80211_input(vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
/*
* If the station has a key cache slot assigned
* update the key->node mapping table.
*/
keyix = ni->ni_ucastkey.wk_keyix;
if (keyix != IEEE80211_KEYIX_NONE &&
- sc->sc_keyixmap[keyix] == NULL)
+ sc->sc_keyixmap[keyix] == NULL) {
sc->sc_keyixmap[keyix] = ieee80211_ref_node(ni);
+ }
ieee80211_unref_node(&ni);
- } else
- type = ieee80211_input_all(ic, skb, rs->rs_rssi, bf->bf_tsf);
+ } else {
+ if (vap)
+ type = ieee80211_input(vap, NULL, skb, rs->rs_rssi, bf->bf_tsf);
+ else
+ type = ieee80211_input_all(ic, skb, rs->rs_rssi, bf->bf_tsf);
+ }
}
if (sc->sc_diversity) {
--- a/net80211/ieee80211_node.h
+++ b/net80211/ieee80211_node.h
@@ -286,15 +286,18 @@ struct ieee80211_node *ieee80211_find_no
const u_int8_t *);
#endif /* #ifdef IEEE80211_DEBUG_REFCNT */
+struct ieee80211vap *
+ieee80211_find_rxvap(struct ieee80211com *ic, const u_int8_t *mac);
+
/* Returns a ieee80211_node* with refcount incremented, if found */
#ifdef IEEE80211_DEBUG_REFCNT
-#define ieee80211_find_rxnode(_nt, _wh) \
- ieee80211_find_rxnode_debug(_nt, _wh, __func__, __LINE__)
+#define ieee80211_find_rxnode(_nt, _vap, _wh) \
+ ieee80211_find_rxnode_debug(_nt, _vap, _wh, __func__, __LINE__)
struct ieee80211_node *ieee80211_find_rxnode_debug(struct ieee80211com *,
- const struct ieee80211_frame_min *, const char *, int);
+ struct ieee80211vap *, const struct ieee80211_frame_min *, const char *, int);
#else
struct ieee80211_node *ieee80211_find_rxnode(struct ieee80211com *,
- const struct ieee80211_frame_min *);
+ struct ieee80211vap *, const struct ieee80211_frame_min *);
#endif /* #ifdef IEEE80211_DEBUG_REFCNT */
/* Returns a ieee80211_node* with refcount incremented, if found */
|
