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madwifi: fix a noderef problem in the mbss vap cleanup

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14191 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2009-01-26 00:27:27 +00:00
parent a1b43cc8d9
commit 42ea3e3949
1 changed files with 44 additions and 17 deletions
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61
package/madwifi/patches/393-mbss_vap_auth.patch
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@ -98,7 +98,7 @@
const u_int8_t *addr;
if (IS_CTL(wh) && !IS_PSPOLL(wh) /*&& !IS_RTS(ah)*/)
@@ -1426,32 +1475,21 @@ ieee80211_find_rxnode(struct ieee80211co
@@ -1426,32 +1475,24 @@ ieee80211_find_rxnode(struct ieee80211co
/* XXX check ic_bss first in station mode */
/* XXX 4-address frames? */
@ -119,8 +119,11 @@
- return NULL;
+ ni = ieee80211_ref_node(avp->iv_wdsnode);
}
+ if (!(vap->iv_flags_ext & IEEE80211_FEXT_WDS))
+ return NULL;
+ } else {
+ return NULL;
}
+ return ni;
}
-#ifdef IEEE80211_DEBUG_REFCNT
@ -137,7 +140,7 @@
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_rxnode_debug);
@@ -1476,15 +1514,14 @@ ieee80211_find_txnode(struct ieee80211va
@@ -1476,15 +1517,14 @@ ieee80211_find_txnode(struct ieee80211va
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node_table *nt;
struct ieee80211_node *ni = NULL;
@ -154,7 +157,7 @@
/*
* The destination address should be in the node table
@@ -1502,11 +1539,22 @@ ieee80211_find_txnode(struct ieee80211va
@@ -1502,11 +1542,22 @@ 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);
@ -179,7 +182,7 @@
IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
if (ni == NULL) {
@@ -1961,13 +2009,29 @@ remove_worse_nodes(void *arg, struct iee
@@ -1961,13 +2012,29 @@ remove_worse_nodes(void *arg, struct iee
}
}
@ -211,19 +214,29 @@
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -227,15 +227,22 @@ ieee80211_input(struct ieee80211vap * va
if (!dev)
goto out;
@@ -216,16 +216,14 @@ ieee80211_input(struct ieee80211vap * va
type = -1; /* undefined */
- if (!vap)
- goto out;
+ if (!vap || !vap->iv_bss || !vap->iv_dev || !vap->iv_ic)
+ goto discard;
ic = vap->iv_ic;
- if (!ic)
- goto out;
-
dev = vap->iv_dev;
- 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;
+
+ goto discard;
/* initialize ni as in the previous API */
if (ni_or_null == NULL) {
/* This function does not 'own' vap->iv_bss, so we cannot
@@ -233,9 +231,10 @@ ieee80211_input(struct ieee80211vap * va
* guarantee its existence during the following call, hence
* briefly grab our own reference. */
ni = ieee80211_ref_node(vap->iv_bss);
@ -236,7 +249,21 @@
KASSERT(skb->len >= sizeof(struct ieee80211_frame_min),
("frame length too short: %u", skb->len));
@@ -933,16 +940,23 @@ int
@@ -848,10 +847,11 @@ ieee80211_input(struct ieee80211vap * va
err:
vap->iv_devstats.rx_errors++;
out:
- if (skb != NULL)
- ieee80211_dev_kfree_skb(&skb);
if (ni_or_null == NULL)
ieee80211_unref_node(&ni);
+discard:
+ if (skb != NULL)
+ ieee80211_dev_kfree_skb(&skb);
return type;
#undef HAS_SEQ
}
@@ -933,16 +933,23 @@ int
ieee80211_input_all(struct ieee80211com *ic,
struct sk_buff *skb, int rssi, u_int64_t rtsf)
{
@ -260,7 +287,7 @@
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
@@ -954,8 +961,10 @@ ieee80211_input_all(struct ieee80211com
skb1 = skb;
skb = NULL;
}
@ -272,7 +299,7 @@
if (skb != NULL) /* no vaps, reclaim skb */
ieee80211_dev_kfree_skb(&skb);
return type;
@@ -1146,11 +1162,9 @@ ieee80211_deliver_data(struct ieee80211_
@@ -1146,11 +1155,9 @@ ieee80211_deliver_data(struct ieee80211_
* sending it will not work; just let it be
* delivered normally.
*/