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tsnep: Fix TX queue stop/wake for multiple queues

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netif_stop_queue() and netif_wake_queue() act on TX queue 0. This is ok
as long as only a single TX queue is supported. But support for multiple
TX queues was introduced with 762031375d and I missed to adapt stop
and wake of TX queues.

Use netif_stop_subqueue() and netif_tx_wake_queue() to act on specific
TX queue.

Fixes: 762031375d ("tsnep: Support multiple TX/RX queue pairs")
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Link: https://lore.kernel.org/r/20230124191440.56887-1-gerhard@engleder-embedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Gerhard Engleder 2023-01-24 20:14:40 +01:00 committed by Jakub Kicinski
parent 6c4ca03bd8
commit 3d53aaef43
1 changed files with 9 additions and 6 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

15
drivers/net/ethernet/engleder/tsnep_main.c
View file

@ -450,7 +450,7 @@ static netdev_tx_t tsnep_xmit_frame_ring(struct sk_buff *skb,
/* ring full, shall not happen because queue is stopped if full
* below
*/
netif_stop_queue(tx->adapter->netdev);
netif_stop_subqueue(tx->adapter->netdev, tx->queue_index);
spin_unlock_irqrestore(&tx->lock, flags);
@ -493,7 +493,7 @@ static netdev_tx_t tsnep_xmit_frame_ring(struct sk_buff *skb,
if (tsnep_tx_desc_available(tx) < (MAX_SKB_FRAGS + 1)) {
/* ring can get full with next frame */
netif_stop_queue(tx->adapter->netdev);
netif_stop_subqueue(tx->adapter->netdev, tx->queue_index);
}
spin_unlock_irqrestore(&tx->lock, flags);
@ -503,11 +503,14 @@ static netdev_tx_t tsnep_xmit_frame_ring(struct sk_buff *skb,
static bool tsnep_tx_poll(struct tsnep_tx *tx, int napi_budget)
{
struct tsnep_tx_entry *entry;
struct netdev_queue *nq;
unsigned long flags;
int budget = 128;
struct tsnep_tx_entry *entry;
int count;
int length;
int count;
nq = netdev_get_tx_queue(tx->adapter->netdev, tx->queue_index);
spin_lock_irqsave(&tx->lock, flags);
@ -564,8 +567,8 @@ static bool tsnep_tx_poll(struct tsnep_tx *tx, int napi_budget)
} while (likely(budget));
if ((tsnep_tx_desc_available(tx) >= ((MAX_SKB_FRAGS + 1) * 2)) &&
netif_queue_stopped(tx->adapter->netdev)) {
netif_wake_queue(tx->adapter->netdev);
netif_tx_queue_stopped(nq)) {
netif_tx_wake_queue(nq);
}
spin_unlock_irqrestore(&tx->lock, flags);