diff options
| author | hselasky <hselasky@FreeBSD.org> | 2017-07-13 15:54:26 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2017-07-13 15:54:26 +0000 |
| commit | 7099733c5a6b6ef52c2367fd744959d8be36a260 (patch) | |
| tree | d5f1f96347ad1bcd201875805c848cd3843ae7c5 | |
| parent | 6a14c848154f9b1a6511cd1d248d9c8e8ed12172 (diff) | |
| download | FreeBSD-src-7099733c5a6b6ef52c2367fd744959d8be36a260.zip FreeBSD-src-7099733c5a6b6ef52c2367fd744959d8be36a260.tar.gz | |
MF11 r320947; MFC r320876:
Make sure the mlx4en RX DMA ring gets stamped with software ownership
in order to prevent the flow of QP to error in the firmware once
UPDATE_QP is called.
Approved by: re (marius)
Sponsored by: Mellanox Technologies
| -rw-r--r-- | sys/ofed/drivers/net/mlx4/en_rx.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/ofed/drivers/net/mlx4/en_rx.c b/sys/ofed/drivers/net/mlx4/en_rx.c index 2711b22..5e9ec86 100644 --- a/sys/ofed/drivers/net/mlx4/en_rx.c +++ b/sys/ofed/drivers/net/mlx4/en_rx.c @@ -394,8 +394,14 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv) ring->rx_mb_size = priv->rx_mb_size; 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; |
