Hi,
On Mon, 17 Jan 2022 at 06:55, Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:
...
>
> /* stop hardware - this must stop RX */
> diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
> index 0291e49058f2..37d5438fdb3f 100644
> --- a/net/mac802154/ieee802154_i.h
> +++ b/net/mac802154/ieee802154_i.h
> @@ -122,6 +122,7 @@ extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
>
> void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
> void ieee802154_xmit_sync_worker(struct work_struct *work);
> +void ieee802154_sync_tx(struct ieee802154_local *local);
> 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 de5ecda80472..d1fd2cc67cbe 100644
> --- a/net/mac802154/tx.c
> +++ b/net/mac802154/tx.c
> @@ -48,6 +48,7 @@ void ieee802154_xmit_sync_worker(struct work_struct *work)
>
> kfree_skb(skb);
> atomic_dec(&local->phy->ongoing_txs);
> + wake_up(&local->phy->sync_txq);
if (atomic_dec_and_test(&hw->phy->ongoing_txs))
wake_up(&hw->phy->sync_txq);
> netdev_dbg(dev, "transmission failed\n");
> }
>
> @@ -117,6 +118,11 @@ ieee802154_hot_tx(struct ieee802154_local *local, struct sk_buff *skb)
> return ieee802154_tx(local, skb);
> }
>
> +void ieee802154_sync_tx(struct ieee802154_local *local)
> +{
> + wait_event(local->phy->sync_txq, !atomic_read(&local->phy->ongoing_txs));
> +}
> +
> netdev_tx_t
> ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev)
> {
> diff --git a/net/mac802154/util.c b/net/mac802154/util.c
> index db2ac53b937e..230fe3390df7 100644
> --- a/net/mac802154/util.c
> +++ b/net/mac802154/util.c
> @@ -90,6 +90,7 @@ void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
> after_wakeup:
> dev_consume_skb_any(skb);
> atomic_dec(&hw->phy->ongoing_txs);
> + wake_up(&hw->phy->sync_txq);
if (atomic_dec_and_test(&hw->phy->ongoing_txs))
wake_up(&hw->phy->sync_txq);
- Alex
