diff options
| author | Eugenia Emantayev <eugenia@mellanox.com> | 2016-12-29 18:37:10 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-03-16 02:26:40 +0000 |
| commit | 26f2a4499778f2581e9c09883a73de4756a0fd2a (patch) | |
| tree | 76c141ad88ecff0111de302bfc11288f530e01b2 /drivers/net | |
| parent | 7e87d5f7cea860b8967880133ff4299fa4202255 (diff) | |
| download | linux-stable-26f2a4499778f2581e9c09883a73de4756a0fd2a.tar.gz linux-stable-26f2a4499778f2581e9c09883a73de4756a0fd2a.tar.bz2 linux-stable-26f2a4499778f2581e9c09883a73de4756a0fd2a.zip | |
net/mlx4_en: Fix bad WQE issue
commit 6496bbf0ec481966ef9ffe5b6660d8d1b55c60cc upstream.
Single send WQE in RX buffer should be stamped with software
ownership in order to prevent the flow of QP in error in FW
once UPDATE_QP is called.
Fixes: 9f519f68cfff ('mlx4_en: Not using Shared Receive Queues')
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_rx.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 76879a1cca6f..a0de085b6aa7 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -437,8 +437,14 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv) ring->cqn = priv->rx_cq[ring_ind]->mcq.cqn; ring->stride = stride; - if (ring->stride <= TXBB_SIZE) + if (ring->stride <= TXBB_SIZE) { + /* Stamp first unused send wqe */ + __be32 *ptr = (__be32 *)ring->buf; + __be32 stamp = cpu_to_be32(1 << STAMP_SHIFT); + *ptr = stamp; + /* Move pointer to start of rx section */ ring->buf += TXBB_SIZE; + } ring->log_stride = ffs(ring->stride) - 1; ring->buf_size = ring->size * ring->stride; |