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Add node_clear_keyixmap() and use it in the ieee80211_free_node() / node_reclaim().

Browse Source 
PR:		kern/199672
Submitted by:	Andriy Voskoboinyk <s3erios@gmail.com>
This commit is contained in:
Adrian Chadd 2015-05-04 00:29:19 +00:00
parent 11cede4873
commit eca3b4fc14
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=282404
1 changed files with 26 additions and 28 deletions
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54
sys/net80211/ieee80211_node.c
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@ -879,7 +879,7 @@ ieee80211_sta_leave(struct ieee80211_node *ni)
void
ieee80211_node_deauth(struct ieee80211_node *ni, int reason)
{
/* NB: bump the refcnt to be sure temporay nodes are not reclaimed */
/* NB: bump the refcnt to be sure temporary nodes are not reclaimed */
ieee80211_ref_node(ni);
if (ni->ni_associd != 0)
IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
@ -1757,6 +1757,28 @@ _ieee80211_free_node(struct ieee80211_node *ni)
ni->ni_ic->ic_node_free(ni);
}
/*
* Clear any entry in the unicast key mapping table.
*/
static int
node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
{
ieee80211_keyix keyix;
keyix = ni->ni_ucastkey.wk_rxkeyix;
if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
nt->nt_keyixmap[keyix] == ni) {
IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
"%s: %p<%s> clear key map entry %u\n",
__func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
nt->nt_keyixmap[keyix] = NULL;
ieee80211_node_decref(ni);
return 1;
}
return 0;
}
void
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_free_node_debug(struct ieee80211_node *ni, const char *func, int line)
@ -1778,24 +1800,9 @@ ieee80211_free_node(struct ieee80211_node *ni)
* Last reference, reclaim state.
*/
_ieee80211_free_node(ni);
} else if (ieee80211_node_refcnt(ni) == 1 &&
nt->nt_keyixmap != NULL) {
ieee80211_keyix keyix;
/*
* Check for a last reference in the key mapping table.
*/
keyix = ni->ni_ucastkey.wk_rxkeyix;
if (keyix < nt->nt_keyixmax &&
nt->nt_keyixmap[keyix] == ni) {
IEEE80211_DPRINTF(ni->ni_vap,
IEEE80211_MSG_NODE,
"%s: %p<%s> clear key map entry", __func__,
ni, ether_sprintf(ni->ni_macaddr));
nt->nt_keyixmap[keyix] = NULL;
ieee80211_node_decref(ni); /* XXX needed? */
} else if (ieee80211_node_refcnt(ni) == 1)
if (node_clear_keyixmap(nt, ni))
_ieee80211_free_node(ni);
}
}
IEEE80211_NODE_UNLOCK(nt);
} else {
if (ieee80211_node_dectestref(ni))
@ -1863,7 +1870,6 @@ ieee80211_node_delucastkey(struct ieee80211_node *ni)
static void
node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
{
ieee80211_keyix keyix;
IEEE80211_NODE_LOCK_ASSERT(nt);
@ -1878,15 +1884,7 @@ node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
* table. We cannot depend on the mapping table entry
* being cleared because the node may not be free'd.
*/
keyix = ni->ni_ucastkey.wk_rxkeyix;
if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax &&
nt->nt_keyixmap[keyix] == ni) {
IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE,
"%s: %p<%s> clear key map entry %u\n",
__func__, ni, ether_sprintf(ni->ni_macaddr), keyix);
nt->nt_keyixmap[keyix] = NULL;
ieee80211_node_decref(ni); /* NB: don't need free */
}
(void)node_clear_keyixmap(nt, ni);
if (!ieee80211_node_dectestref(ni)) {
/*
* Other references are present, just remove the