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IB/mlx5: Add driver cross-channel support

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Add support of cross-channel functionality to mlx5
driver. This includes ability to ignore overrun for CQ
which intended for cross-channel, export device capability and
configure the QP to be sync master/slave queues.

The cross-channel enabled QP supports combination of
three possible properties:
* WQE processing on the receive queue of this QP
* WQE processing on the send queue of this QP
* WQE are supported on the send queue

Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky
2015-12-20 12:16:11 +02:00
committed by Doug Ledford
parent 8a06ce59a4
commit 051f263098
5 changed files with 72 additions and 11 deletions
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3
include/linux/mlx5/qp.h
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@@ -130,6 +130,9 @@ enum {
MLX5_QP_BIT_RWE = 1 << 14,
MLX5_QP_BIT_RAE = 1 << 13,
MLX5_QP_BIT_RIC = 1 << 4,
MLX5_QP_BIT_CC_SLAVE_RECV = 1 << 2,
MLX5_QP_BIT_CC_SLAVE_SEND = 1 << 1,
MLX5_QP_BIT_CC_MASTER = 1 << 0
};
enum {