mac80211: insert WDS peer after adding interface
This reorders the open code so that WDS peer STA info entries
are added after the corresponding interface is added to the
driver so that driver callbacks aren't invoked out of order.
Also make any master device startup fatal.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index ab952ff..9ad4e36 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -257,20 +257,6 @@
case IEEE80211_IF_TYPE_WDS:
if (!is_valid_ether_addr(sdata->u.wds.remote_addr))
return -ENOLINK;
-
- /* Create STA entry for the WDS peer */
- sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
- GFP_KERNEL);
- if (!sta)
- return -ENOMEM;
-
- sta->flags |= WLAN_STA_AUTHORIZED;
-
- res = sta_info_insert(sta);
- if (res) {
- /* STA has been freed */
- return res;
- }
break;
case IEEE80211_IF_TYPE_VLAN:
if (!sdata->u.vlan.ap)
@@ -337,10 +323,8 @@
conf.type = sdata->vif.type;
conf.mac_addr = dev->dev_addr;
res = local->ops->add_interface(local_to_hw(local), &conf);
- if (res && !local->open_count && local->ops->stop)
- local->ops->stop(local_to_hw(local));
if (res)
- return res;
+ goto err_stop;
ieee80211_if_config(dev);
ieee80211_reset_erp_info(dev);
@@ -353,9 +337,29 @@
netif_carrier_on(dev);
}
+ if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ /* Create STA entry for the WDS peer */
+ sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
+ GFP_KERNEL);
+ if (!sta) {
+ res = -ENOMEM;
+ goto err_del_interface;
+ }
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ res = sta_info_insert(sta);
+ if (res) {
+ /* STA has been freed */
+ goto err_del_interface;
+ }
+ }
+
if (local->open_count == 0) {
res = dev_open(local->mdev);
WARN_ON(res);
+ if (res)
+ goto err_del_interface;
tasklet_enable(&local->tx_pending_tasklet);
tasklet_enable(&local->tasklet);
}
@@ -390,6 +394,12 @@
netif_start_queue(dev);
return 0;
+ err_del_interface:
+ local->ops->remove_interface(local_to_hw(local), &conf);
+ err_stop:
+ if (!local->open_count && local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ return res;
}
static int ieee80211_stop(struct net_device *dev)