This patch extends HCA_CAP and SQ Context structs available in PRM. This
fields allow checking if NIC supports storing hairpin SQ's WQ buffer in
host memory and configuring such memory placement.
HCA capabilities are extended with the following fields:
- hairpin_sq_wq_in_host_mem - If set, then NIC supports using host
memory as a backing storage for hairpin SQ's WQ buffer.
- hairpin_sq_wqe_bb_size - Indicates the required size of SQ WQE basic
block.
SQ Context is extended with hairpin_wq_buffer_type which informs
NIC where SQ's WQ buffer will be stored. This field can take the
following values:
- MLX5_SQC_HAIRPIN_WQ_BUFFER_TYPE_INTERNAL_BUFFER - WQ buffer will be
stored in unlocked device memory.
- MLX5_SQC_HAIRPIN_WQ_BUFFER_TYPE_HOST_MEMORY - WQ buffer will be stored
in host memory. Buffer is provided by PMD.
Signed-off-by: Dariusz Sosnowski <dsosnowski@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
e58c372d76