From 7099733c5a6b6ef52c2367fd744959d8be36a260 Mon Sep 17 00:00:00 2001 From: hselasky Date: Thu, 13 Jul 2017 15:54:26 +0000 Subject: 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 --- sys/ofed/drivers/net/mlx4/en_rx.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) 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; -- cgit v1.1