diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-05-19 17:05:14 +0200 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2022-06-10 09:48:40 +0200 |
| commit | ddd9ee7cda122ac55571b8b11b51ef1e71918b63 (patch) | |
| tree | 8b5bacff08c74fdb6a066caa6c7a6bd826f967d6 /net/mac802154/tx.c | |
| parent | net: mac802154: Introduce a tx queue flushing mechanism (diff) | |
| download | linux-ddd9ee7cda122ac55571b8b11b51ef1e71918b63.tar.xz linux-ddd9ee7cda122ac55571b8b11b51ef1e71918b63.zip | |
net: mac802154: Introduce a synchronous API for MLME commands
This is the slow path, we need to wait for each command to be processed
before continuing so let's introduce an helper which does the
transmission and blocks until it gets notified of its asynchronous
completion. This helper is going to be used when introducing scan
support.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220519150516.443078-10-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Diffstat (limited to 'net/mac802154/tx.c')
| -rw-r--r-- | net/mac802154/tx.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 38f74b8b6740..4827391600f6 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -128,6 +128,50 @@ int ieee802154_sync_and_hold_queue(struct ieee802154_local *local) return ieee802154_sync_queue(local); } +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 ret; + + /* Avoid possible calls to ->ndo_stop() when we asynchronously perform + * MLME transmissions. + */ + rtnl_lock(); + + /* Ensure the device was not stopped, otherwise error out */ + if (!local->open_count) { + rtnl_unlock(); + return -ENETDOWN; + } + + ieee802154_tx(local, skb); + ret = ieee802154_sync_queue(local); + + rtnl_unlock(); + + return ret; +} + +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 ret; + + ieee802154_mlme_op_pre(local); + ret = ieee802154_mlme_tx(local, skb); + ieee802154_mlme_op_post(local); + + return ret; +} + static netdev_tx_t ieee802154_hot_tx(struct ieee802154_local *local, struct sk_buff *skb) { |