diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-05-19 18:05:12 +0300 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2022-06-10 10:48:40 +0300 |
| commit | a40612f399eabe23424acf5985643a35d4f2832e (patch) | |
| tree | 87a0a6f4f6c9800150fed0739fca9f96c16c1f21 /net/mac802154/util.c | |
| parent | 226730e1aa2844b6e5499a6fe6bea4db17a894a8 (diff) | |
| download | linux-a40612f399eabe23424acf5985643a35d4f2832e.tar.xz | |
net: mac802154: Introduce a helper to disable the queue
Sometimes calling the stop queue helper is not enough because it does
not hold any lock. In order to be safe and avoid racy situations when
trying to (soon) sync the Tx queue, for instance before sending an MLME
frame, let's now introduce an helper which actually hold the necessary
locks when doing so.
Suggested-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220519150516.443078-8-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Diffstat (limited to 'net/mac802154/util.c')
| -rw-r--r-- | net/mac802154/util.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/mac802154/util.c b/net/mac802154/util.c index 0ed8b5bcbe8a..999534f64485 100644 --- a/net/mac802154/util.c +++ b/net/mac802154/util.c @@ -83,6 +83,20 @@ void ieee802154_release_queue(struct ieee802154_local *local) spin_unlock_irqrestore(&local->phy->queue_lock, flags); } +void ieee802154_disable_queue(struct ieee802154_local *local) +{ + struct ieee802154_sub_if_data *sdata; + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + if (!sdata->dev) + continue; + + netif_tx_disable(sdata->dev); + } + rcu_read_unlock(); +} + enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer) { struct ieee802154_local *local = |