Cumulative patch from commit 1acf38f1a5aa19169035de9b611fc76440729c0b

1acf38f Add ifname to vlan_remove_dynamic() debug print
2e192bd Print debug entry on STA pruning from other interfaces
c8e6bea Remove VLAN interface on STA free
de31fb0 vlan: Ignore multiple NEWLINK messages
371205d vlan: Ignore DELLINK on interfaces that exists
a5e81ba Fix STA VLAN bind for RSN pre-authentication case
3ffdeb7 Fix RSN preauthentication with dynamic_vlan enabled but unused
8e2c5f1 dbus: Fix WPS property of fi.w1.wpa_supplicant1.BSS interface
d447cd5 Updates for stricter automatic memcpy bounds checking
60eb9e1 AP: Enable multicast snooping on bridge if ProxyARP IPv6 is in use
b799118 Fix CONFIG_AP=y build without CONFIG_CTRL_IFACE
954f03a Fix compilation issues with CONFIG_NO_CONFIG_WRITE=y
da3db68 Fix INTERFACE_ADD parsing

Change-Id: If25ebad847bc2a1b5d9386cbaa80c6fd8ce4e226
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/ap/vlan_init.c b/src/ap/vlan_init.c
index dc65019..c57c062 100644
--- a/src/ap/vlan_init.c
+++ b/src/ap/vlan_init.c
@@ -485,7 +485,8 @@
 	wpa_printf(MSG_DEBUG, "VLAN: vlan_newlink(%s)", ifname);
 
 	while (vlan) {
-		if (os_strcmp(ifname, vlan->ifname) == 0) {
+		if (os_strcmp(ifname, vlan->ifname) == 0 && !vlan->configured) {
+			vlan->configured = 1;
 
 			if (hapd->conf->vlan_bridge[0]) {
 				os_snprintf(br_name, sizeof(br_name), "%s%d",
@@ -651,6 +652,11 @@
 
 	if (!ifname[0])
 		return;
+	if (del && if_nametoindex(ifname)) {
+		 /* interface still exists, race condition ->
+		  * iface has just been recreated */
+		return;
+	}
 
 	wpa_printf(MSG_DEBUG,
 		   "VLAN: RTM_%sLINK: ifi_index=%d ifname=%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
@@ -953,7 +959,8 @@
 	if (vlan_id <= 0 || vlan_id > MAX_VLAN_ID)
 		return 1;
 
-	wpa_printf(MSG_DEBUG, "VLAN: %s(vlan_id=%d)", __func__, vlan_id);
+	wpa_printf(MSG_DEBUG, "VLAN: %s(ifname=%s vlan_id=%d)",
+		   __func__, hapd->conf->iface, vlan_id);
 
 	vlan = hapd->conf->vlan;
 	while (vlan) {