-/* We need to be able to nest calls to netif_tx_stop_queue(), partly
- * because of the 2 hardware queues associated with each core queue,
- * but also so that we can inhibit TX for reasons other than a full
- * hardware queue. */
-void efx_stop_queue(struct efx_channel *channel)
-{
- struct efx_nic *efx = channel->efx;
- struct efx_tx_queue *tx_queue = efx_channel_get_tx_queue(channel, 0);
-
- if (!tx_queue)
- return;
-
- spin_lock_bh(&channel->tx_stop_lock);
- netif_vdbg(efx, tx_queued, efx->net_dev, "stop TX queue\n");
-
- atomic_inc(&channel->tx_stop_count);
- netif_tx_stop_queue(
- netdev_get_tx_queue(efx->net_dev,
- tx_queue->queue / EFX_TXQ_TYPES));
-
- spin_unlock_bh(&channel->tx_stop_lock);
-}
-
-/* Decrement core TX queue stop count and wake it if the count is 0 */
-void efx_wake_queue(struct efx_channel *channel)
-{
- struct efx_nic *efx = channel->efx;
- struct efx_tx_queue *tx_queue = efx_channel_get_tx_queue(channel, 0);
-
- if (!tx_queue)
- return;
-
- local_bh_disable();
- if (atomic_dec_and_lock(&channel->tx_stop_count,
- &channel->tx_stop_lock)) {
- netif_vdbg(efx, tx_queued, efx->net_dev, "waking TX queue\n");
- netif_tx_wake_queue(
- netdev_get_tx_queue(efx->net_dev,
- tx_queue->queue / EFX_TXQ_TYPES));
- spin_unlock(&channel->tx_stop_lock);
- }
- local_bh_enable();
-}
-