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net/mlx4_en: Fix bad WQE issue
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: 9f519f68cf
('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>
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parent
3b01fe7f91
commit
6496bbf0ec
@ -445,8 +445,14 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
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ring->cqn = priv->rx_cq[ring_ind]->mcq.cqn;
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ring->stride = stride;
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if (ring->stride <= TXBB_SIZE)
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if (ring->stride <= TXBB_SIZE) {
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/* Stamp first unused send wqe */
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__be32 *ptr = (__be32 *)ring->buf;
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__be32 stamp = cpu_to_be32(1 << STAMP_SHIFT);
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*ptr = stamp;
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/* Move pointer to start of rx section */
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ring->buf += TXBB_SIZE;
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}
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ring->log_stride = ffs(ring->stride) - 1;
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ring->buf_size = ring->size * ring->stride;
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