diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-06-17 21:29:14 +0200 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2022-06-27 10:57:32 +0200 |
| commit | fbdaa5ba6bd6955f7e7f9228e4d815cc5e43fe5b (patch) | |
| tree | 4d4d4dd22aba67146c6abc051bc33734dc8ed43f /net/mac802154 | |
| parent | mac802154: fix atomic_dec_and_test checks (diff) | |
| download | linux-fbdaa5ba6bd6955f7e7f9228e4d815cc5e43fe5b.tar.xz linux-fbdaa5ba6bd6955f7e7f9228e4d815cc5e43fe5b.zip | |
net: mac802154: Fix a Tx warning check
The purpose of the netif_is_down() helper was to ensure that the network
interface used was still up when performing the transmission. What it
actually did was to check if _all_ interfaces were up. This was not
noticed at that time because I did not use interfaces at all before
discussing with Alexander Aring about how to handle coordinators
properly.
Drop the helper and call netif_running() on the right sub interface
object directly.
Fixes: 4f790184139b ("net: mac802154: Add a warning in the slow path")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220617192914.1275611-1-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Diffstat (limited to 'net/mac802154')
| -rw-r--r-- | net/mac802154/ieee802154_i.h | 8 | ||||
| -rw-r--r-- | net/mac802154/tx.c | 31 |
2 files changed, 14 insertions, 25 deletions
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h index 8a4816ae71e7..010365a6364e 100644 --- a/net/mac802154/ieee802154_i.h +++ b/net/mac802154/ieee802154_i.h @@ -126,9 +126,13 @@ void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb); void ieee802154_xmit_sync_worker(struct work_struct *work); int ieee802154_sync_and_hold_queue(struct ieee802154_local *local); int ieee802154_mlme_op_pre(struct ieee802154_local *local); -int ieee802154_mlme_tx(struct ieee802154_local *local, struct sk_buff *skb); +int ieee802154_mlme_tx(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb); void ieee802154_mlme_op_post(struct ieee802154_local *local); -int ieee802154_mlme_tx_one(struct ieee802154_local *local, struct sk_buff *skb); +int ieee802154_mlme_tx_one(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb); netdev_tx_t ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); netdev_tx_t diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 8ddcd2e841ca..9d8d43cf1e64 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -132,31 +132,14 @@ int ieee802154_sync_and_hold_queue(struct ieee802154_local *local) return ret; } -static bool ieee802154_netif_is_down(struct ieee802154_local *local) -{ - struct ieee802154_sub_if_data *sdata; - bool is_down = true; - - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { - if (!sdata->dev) - continue; - - is_down = !netif_running(sdata->dev); - if (is_down) - break; - } - rcu_read_unlock(); - - return is_down; -} - int ieee802154_mlme_op_pre(struct ieee802154_local *local) { return ieee802154_sync_and_hold_queue(local); } -int ieee802154_mlme_tx(struct ieee802154_local *local, struct sk_buff *skb) +int ieee802154_mlme_tx(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) { int ret; @@ -174,7 +157,7 @@ int ieee802154_mlme_tx(struct ieee802154_local *local, struct sk_buff *skb) /* Warn if the ieee802154 core thinks MLME frames can be sent while the * net interface expects this cannot happen. */ - if (WARN_ON_ONCE(ieee802154_netif_is_down(local))) { + if (WARN_ON_ONCE(!netif_running(sdata->dev))) { rtnl_unlock(); return -ENETDOWN; } @@ -192,12 +175,14 @@ void ieee802154_mlme_op_post(struct ieee802154_local *local) ieee802154_release_queue(local); } -int ieee802154_mlme_tx_one(struct ieee802154_local *local, struct sk_buff *skb) +int ieee802154_mlme_tx_one(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) { int ret; ieee802154_mlme_op_pre(local); - ret = ieee802154_mlme_tx(local, skb); + ret = ieee802154_mlme_tx(local, sdata, skb); ieee802154_mlme_op_post(local); return ret; |