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492 lines
15 KiB
Diff
492 lines
15 KiB
Diff
--- a/net80211/ieee80211_node.c
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+++ b/net80211/ieee80211_node.c
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@@ -123,6 +123,9 @@ static void ieee80211_node_table_cleanup
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static void ieee80211_node_table_reset(struct ieee80211_node_table *,
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struct ieee80211vap *);
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+static struct ieee80211_node *
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+lookup_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap, const u_int8_t *addr);
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+
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MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
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void
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@@ -697,7 +700,7 @@ ieee80211_sta_join(struct ieee80211vap *
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struct ieee80211com *ic = vap->iv_ic;
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struct ieee80211_node *ni;
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- ni = ieee80211_find_node(&ic->ic_sta, se->se_macaddr);
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+ ni = lookup_rxnode(ic, vap, se->se_macaddr);
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if (ni == NULL) {
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ni = ieee80211_alloc_node_table(vap, se->se_macaddr);
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
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@@ -1394,6 +1397,53 @@ ieee80211_add_neighbor(struct ieee80211v
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return ni;
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}
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+struct ieee80211vap *
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+ieee80211_find_rxvap(struct ieee80211com *ic, const u_int8_t *mac)
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+{
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+ struct ieee80211vap *vap;
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+
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+ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
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+ if (IEEE80211_ADDR_EQ(vap->iv_myaddr, mac))
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+ return vap;
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+ }
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+ return NULL;
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+}
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+EXPORT_SYMBOL(ieee80211_find_rxvap);
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+
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+static struct ieee80211_node *
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+lookup_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap,
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+ const u_int8_t *addr)
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+{
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+ struct ieee80211_node_table *nt;
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+ struct ieee80211_node *ni = NULL;
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+ int use_bss = 0;
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+ int hash;
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+
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+ nt = &ic->ic_sta;
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+ IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
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+ hash = IEEE80211_NODE_HASH(addr);
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+ LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
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+ if (IEEE80211_ADDR_EQ(ni->ni_macaddr, addr)) {
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+ /* allow multiple nodes on different vaps */
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+ if (vap && (ni->ni_vap != vap))
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+ continue;
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+
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+ ieee80211_ref_node(ni);
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+ goto out;
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+ }
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+ }
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+
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+ /* no match found */
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+ ni = NULL;
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+
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+out:
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+ IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
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+ return ni;
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+#undef IS_PSPOLL
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+#undef IS_CTL
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+}
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+
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+
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/*
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* Return the node for the sender of a frame; if the sender is unknown return
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* NULL. The caller is expected to deal with this. (The frame is sent to all
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@@ -1403,10 +1453,10 @@ ieee80211_add_neighbor(struct ieee80211v
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*/
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struct ieee80211_node *
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#ifdef IEEE80211_DEBUG_REFCNT
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-ieee80211_find_rxnode_debug(struct ieee80211com *ic,
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+ieee80211_find_rxnode_debug(struct ieee80211com *ic, struct ieee80211vap *vap,
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const struct ieee80211_frame_min *wh, const char *func, int line)
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#else
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-ieee80211_find_rxnode(struct ieee80211com *ic,
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+ieee80211_find_rxnode(struct ieee80211com *ic, struct ieee80211vap *vap,
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const struct ieee80211_frame_min *wh)
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#endif
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{
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@@ -1414,9 +1464,8 @@ ieee80211_find_rxnode(struct ieee80211co
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((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
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#define IS_PSPOLL(wh) \
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((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
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- struct ieee80211_node_table *nt;
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- struct ieee80211_node *ni;
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- struct ieee80211vap *vap, *avp;
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+ struct ieee80211_node *ni = NULL;
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+ struct ieee80211vap *avp;
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const u_int8_t *addr;
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if (IS_CTL(wh) && !IS_PSPOLL(wh) /*&& !IS_RTS(ah)*/)
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@@ -1429,32 +1478,25 @@ ieee80211_find_rxnode(struct ieee80211co
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/* XXX check ic_bss first in station mode */
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/* XXX 4-address frames? */
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- nt = &ic->ic_sta;
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- IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
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if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS) {
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- TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
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+ if (vap) { /* assume unicast if vap is set, mcast not supported for wds */
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TAILQ_FOREACH(avp, &vap->iv_wdslinks, iv_wdsnext) {
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- if (!IEEE80211_ADDR_EQ(addr, avp->wds_mac))
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+ if (!IEEE80211_ADDR_EQ(addr, avp->wds_mac) ||
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+ !IEEE80211_ADDR_EQ(wh->i_addr1, avp->iv_myaddr))
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continue;
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if (avp->iv_wdsnode)
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- return ieee80211_ref_node(avp->iv_wdsnode);
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- else
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- return NULL;
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+ ni = ieee80211_ref_node(avp->iv_wdsnode);
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+ return ni;
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}
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+ if (!(vap->iv_flags_ext & IEEE80211_FEXT_WDS))
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+ return NULL;
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+ } else {
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+ return NULL;
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}
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}
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-#ifdef IEEE80211_DEBUG_REFCNT
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- ni = ieee80211_find_node_locked_debug(nt, addr, func, line);
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-#else
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- ni = ieee80211_find_node_locked(nt, addr);
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-#endif
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- IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
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-
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- return ni;
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-#undef IS_PSPOLL
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-#undef IS_CTL
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+ return lookup_rxnode(ic, vap, addr);
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}
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#ifdef IEEE80211_DEBUG_REFCNT
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EXPORT_SYMBOL(ieee80211_find_rxnode_debug);
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@@ -1479,15 +1521,14 @@ ieee80211_find_txnode(struct ieee80211va
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struct ieee80211com *ic = vap->iv_ic;
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struct ieee80211_node_table *nt;
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struct ieee80211_node *ni = NULL;
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+ int hash;
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- IEEE80211_LOCK_IRQ(ic);
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if (vap->iv_opmode == IEEE80211_M_WDS) {
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if (vap->iv_wdsnode && (vap->iv_state == IEEE80211_S_RUN))
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return ieee80211_ref_node(vap->iv_wdsnode);
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else
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return NULL;
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}
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- IEEE80211_UNLOCK_IRQ(ic);
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/*
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* The destination address should be in the node table
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@@ -1505,11 +1546,22 @@ ieee80211_find_txnode(struct ieee80211va
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/* XXX: Can't hold lock across dup_bss due to recursive locking. */
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nt = &vap->iv_ic->ic_sta;
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IEEE80211_NODE_TABLE_LOCK_IRQ(nt);
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+ hash = IEEE80211_NODE_HASH(mac);
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+ LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
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+ if (ni->ni_vap != vap)
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+ continue;
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+
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+ if (IEEE80211_ADDR_EQ(ni->ni_macaddr, mac)) {
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#ifdef IEEE80211_DEBUG_REFCNT
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- ni = ieee80211_find_node_locked_debug(nt, mac, func, line);
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+ ieee80211_ref_node_debug(ni, func, line);
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#else
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- ni = ieee80211_find_node_locked(nt, mac);
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+ ieee80211_ref_node(ni);
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#endif
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+ goto found;
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+ }
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+ }
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+ ni = NULL;
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+found:
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IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt);
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if (ni == NULL) {
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@@ -1964,13 +2016,32 @@ remove_worse_nodes(void *arg, struct iee
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}
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}
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+static void
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+remove_duplicate_nodes(void *arg, struct ieee80211_node *ni)
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+{
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+ struct ieee80211_node *rni = arg;
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+
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+ if (ni == rni)
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+ return;
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+
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+ if (ni->ni_vap == rni->ni_vap)
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+ return;
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+
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+ if (!IEEE80211_ADDR_EQ(rni->ni_macaddr, ni->ni_macaddr))
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+ return;
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+
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+ ieee80211_node_leave(ni);
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+}
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+
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void
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ieee80211_node_join(struct ieee80211_node *ni, int resp)
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{
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struct ieee80211com *ic = ni->ni_ic;
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struct ieee80211vap *vap = ni->ni_vap;
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+ struct ieee80211_node *tni;
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int newassoc;
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+ ieee80211_iterate_nodes(&ic->ic_sta, remove_duplicate_nodes, ni);
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if (ni->ni_associd == 0) {
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u_int16_t aid;
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--- a/net80211/ieee80211_input.c
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+++ b/net80211/ieee80211_input.c
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@@ -216,16 +216,14 @@ ieee80211_input(struct ieee80211vap * va
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type = -1; /* undefined */
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- if (!vap)
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- goto out;
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+ if (!vap || !vap->iv_bss || !vap->iv_dev || !vap->iv_ic)
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+ goto discard;
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ic = vap->iv_ic;
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- if (!ic)
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- goto out;
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-
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dev = vap->iv_dev;
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- if (!dev)
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- goto out;
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+
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+ if ((vap->iv_dev->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
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+ goto discard;
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/* initialize ni as in the previous API */
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if (ni_or_null == NULL) {
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@@ -233,9 +231,10 @@ ieee80211_input(struct ieee80211vap * va
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* guarantee its existence during the following call, hence
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* briefly grab our own reference. */
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ni = ieee80211_ref_node(vap->iv_bss);
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+ KASSERT(ni != NULL, ("null node"));
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+ } else {
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+ ni->ni_inact = ni->ni_inact_reload;
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}
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- KASSERT(ni != NULL, ("null node"));
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- ni->ni_inact = ni->ni_inact_reload;
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KASSERT(skb->len >= sizeof(struct ieee80211_frame_min),
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("frame length too short: %u", skb->len));
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@@ -844,10 +843,11 @@ ieee80211_input(struct ieee80211vap * va
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err:
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vap->iv_devstats.rx_errors++;
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out:
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- if (skb != NULL)
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- ieee80211_dev_kfree_skb(&skb);
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if (ni_or_null == NULL)
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ieee80211_unref_node(&ni);
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+discard:
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+ if (skb != NULL)
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+ ieee80211_dev_kfree_skb(&skb);
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return type;
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#undef HAS_SEQ
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}
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@@ -929,16 +929,23 @@ int
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ieee80211_input_all(struct ieee80211com *ic,
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struct sk_buff *skb, int rssi, u_int64_t rtsf)
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{
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+ struct ieee80211_frame_min *wh = (struct ieee80211_frame_min *) skb->data;
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struct ieee80211vap *vap;
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int type = -1;
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/* XXX locking */
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TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
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+ struct ieee80211_node *ni = NULL;
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struct sk_buff *skb1;
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if ((vap->iv_dev->flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
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continue;
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+ if ((vap->iv_opmode == IEEE80211_M_HOSTAP) &&
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+ !IEEE80211_IS_MULTICAST(wh->i_addr1))
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+ continue;
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+
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+ ni = ieee80211_find_rxnode(ic, vap, wh);
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if (TAILQ_NEXT(vap, iv_next) != NULL) {
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skb1 = skb_copy(skb, GFP_ATOMIC);
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if (skb1 == NULL) {
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@@ -950,8 +957,12 @@ ieee80211_input_all(struct ieee80211com
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skb1 = skb;
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skb = NULL;
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}
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- type = ieee80211_input(vap, NULL, skb1, rssi, rtsf);
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+ type = ieee80211_input(vap, ni, skb1, rssi, rtsf);
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+ if (ni)
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+ ieee80211_unref_node(&ni);
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}
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+
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+out:
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if (skb != NULL) /* no vaps, reclaim skb */
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ieee80211_dev_kfree_skb(&skb);
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return type;
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@@ -1147,11 +1158,9 @@ ieee80211_deliver_data(struct ieee80211_
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* sending it will not work; just let it be
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* delivered normally.
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*/
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- struct ieee80211_node *ni1 = ieee80211_find_node(
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- &vap->iv_ic->ic_sta, eh->ether_dhost);
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+ struct ieee80211_node *ni1 = ieee80211_find_txnode(vap, eh->ether_dhost);
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if (ni1 != NULL) {
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- if (ni1->ni_vap == vap &&
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- ieee80211_node_is_authorized(ni1) &&
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+ if (ieee80211_node_is_authorized(ni1) &&
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!ni1->ni_subif &&
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ni1 != vap->iv_bss) {
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@@ -3520,6 +3529,7 @@ ieee80211_recv_mgmt(struct ieee80211vap
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(vap->iv_opmode == IEEE80211_M_WDS)) &&
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(scan.capinfo & IEEE80211_CAPINFO_ESS))) {
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struct ieee80211vap *avp = NULL;
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+ int do_unref = 0;
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int found = 0;
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IEEE80211_LOCK_IRQ(vap->iv_ic);
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@@ -3553,10 +3563,12 @@ ieee80211_recv_mgmt(struct ieee80211vap
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ni->ni_associd |= 0xc000;
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avp->iv_wdsnode = ieee80211_ref_node(ni);
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IEEE80211_UNLOCK_IRQ(ic);
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- } else if (vap->iv_opmode == IEEE80211_M_IBSS) {
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+ } else if ((vap->iv_opmode == IEEE80211_M_IBSS) &&
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+ IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bssid)) {
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/* Create a new entry in the neighbor table. */
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ni = ieee80211_add_neighbor(vap, wh, &scan);
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}
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+ do_unref = 1;
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} else {
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/*
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* Copy data from beacon to neighbor table.
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@@ -3595,6 +3607,8 @@ ieee80211_recv_mgmt(struct ieee80211vap
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ni->ni_rssi = rssi;
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ni->ni_rtsf = rtsf;
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ni->ni_last_rx = jiffies;
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+ if (do_unref)
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+ ieee80211_unref_node(&ni);
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}
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}
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break;
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--- a/ath/if_ath.c
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+++ b/ath/if_ath.c
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@@ -6589,9 +6589,8 @@ ath_recv_mgmt(struct ieee80211vap * vap,
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sc->sc_recv_mgmt(vap, ni_or_null, skb, subtype, rssi, rtsf);
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-
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/* Lookup the new node if any (this grabs a reference to it) */
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- ni = ieee80211_find_rxnode(vap->iv_ic,
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+ ni = ieee80211_find_rxnode(vap->iv_ic, vap,
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(const struct ieee80211_frame_min *)skb->data);
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if (ni == NULL) {
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DPRINTF(sc, ATH_DEBUG_BEACON, "Dropping; node unknown.\n");
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@@ -6746,7 +6745,9 @@ ath_rx_poll(struct net_device *dev, int
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struct ath_desc *ds;
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struct ath_rx_status *rs;
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struct sk_buff *skb = NULL;
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+ struct ieee80211vap *vap;
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struct ieee80211_node *ni;
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+ const struct ieee80211_frame_min *wh;
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unsigned int len;
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int type;
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u_int phyerr;
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@@ -6901,12 +6902,15 @@ rx_accept:
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skb_trim(skb, skb->len - IEEE80211_CRC_LEN);
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if (mic_fail) {
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+ wh = (const struct ieee80211_frame_min *) skb->data;
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+
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/* Ignore control frames which are reported with mic error */
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- if ((((struct ieee80211_frame *)skb->data)->i_fc[0] &
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+ if ((wh->i_fc[0] &
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IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
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goto drop_micfail;
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- ni = ieee80211_find_rxnode(ic, (const struct ieee80211_frame_min *) skb->data);
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+ vap = ieee80211_find_rxvap(ic, wh->i_addr1);
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+ ni = ieee80211_find_rxnode(ic, vap, wh);
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if (ni && ni->ni_table) {
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ieee80211_check_mic(ni, skb);
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@@ -6968,11 +6972,24 @@ drop_micfail:
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* for its use. If the sender is unknown spam the
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* frame; it'll be dropped where it's not wanted.
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*/
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- if (rs->rs_keyix != HAL_RXKEYIX_INVALID &&
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+ wh = (const struct ieee80211_frame_min *) skb->data;
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+ if ((rs->rs_keyix != HAL_RXKEYIX_INVALID) &&
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(ni = sc->sc_keyixmap[rs->rs_keyix]) != NULL) {
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/* Fast path: node is present in the key map;
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* grab a reference for processing the frame. */
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- ni = ieee80211_ref_node(ni);
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+ ieee80211_ref_node(ni);
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+ if ((ATH_GET_VAP_ID(wh->i_addr1) !=
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+ ATH_GET_VAP_ID(ni->ni_vap->iv_myaddr)) ||
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+ ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) ==
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+ IEEE80211_FC1_DIR_DSTODS)) {
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+ /* key cache node lookup is fast, but it can
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+ * lead to problems in multi-bss (foreign vap
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+ * node reference) or wds (wdsap node ref instead
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+ * of base ap node ref).
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+ * use slowpath lookup in both cases
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+ */
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+ goto lookup_slowpath;
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+ }
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ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi);
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type = ieee80211_input(ni->ni_vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
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ieee80211_unref_node(&ni);
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@@ -6981,24 +6998,39 @@ drop_micfail:
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* No key index or no entry, do a lookup and
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* add the node to the mapping table if possible.
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*/
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- ni = ieee80211_find_rxnode(ic,
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- (const struct ieee80211_frame_min *)skb->data);
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+
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+lookup_slowpath:
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+ if (IEEE80211_IS_MULTICAST(wh->i_addr1))
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+ vap = NULL;
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+ else
|
|
+ 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 */
|