diff options
Diffstat (limited to 'net/mac802154/tx.c')
| -rw-r--r-- | net/mac802154/tx.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 1a4f6d91ab8c..44390419af86 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -21,6 +21,7 @@ #include <linux/if_arp.h> #include <linux/crc-ccitt.h> +#include <net/rtnetlink.h> #include <net/ieee802154_netdev.h> #include <net/mac802154.h> #include <net/cfg802154.h> @@ -50,16 +51,28 @@ static void mac802154_xmit_worker(struct work_struct *work) struct sk_buff *skb = cb->skb; int res; + rtnl_lock(); + + /* check if ifdown occurred while schedule */ + if (!netif_running(skb->dev)) + goto err_tx; + res = local->ops->xmit_sync(&local->hw, skb); - if (res) { - pr_debug("transmission failed\n"); - /* Restart the netif queue on each sub_if_data object. */ - ieee802154_wake_queue(&local->hw); - kfree_skb(skb); - } else { - /* Restart the netif queue on each sub_if_data object. */ - ieee802154_xmit_complete(&local->hw, skb); - } + if (res) + goto err_tx; + + ieee802154_xmit_complete(&local->hw, skb); + + rtnl_unlock(); + + return; + +err_tx: + /* Restart the netif queue on each sub_if_data object. */ + ieee802154_wake_queue(&local->hw); + rtnl_unlock(); + kfree_skb(skb); + pr_debug("transmission failed\n"); } static netdev_tx_t |