From: Moshe Shemesh moshe@mellanox.com
[ Upstream commit 5e911e2c06bd8c17df29147a5e2d4b17fafda024 ]
On sq closure when we free its descriptors, we should also update netdev txq on completions which would not arrive. Otherwise if we reopen sqs and attach them back, for example on fw fatal recovery flow, we may get tx timeout.
Fixes: 29429f3300a3 ("net/mlx5e: Timeout if SQ doesn't flush during close") Signed-off-by: Moshe Shemesh moshe@mellanox.com Reviewed-by: Tariq Toukan tariqt@mellanox.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -499,8 +499,9 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *c static void mlx5e_free_txq_sq_descs(struct mlx5e_sq *sq) { struct mlx5e_tx_wqe_info *wi; + u32 nbytes = 0; + u16 ci, npkts = 0; struct sk_buff *skb; - u16 ci; int i;
while (sq->cc != sq->pc) { @@ -521,8 +522,11 @@ static void mlx5e_free_txq_sq_descs(stru }
dev_kfree_skb_any(skb); + npkts++; + nbytes += wi->num_bytes; sq->cc += wi->num_wqebbs; } + netdev_tx_completed_queue(sq->txq, npkts, nbytes); }
static void mlx5e_free_xdp_sq_descs(struct mlx5e_sq *sq)