CQE Compression reduces PCI overhead by coalescing and compressing
multiple CQEs into a single merged CQE.
Add supported for the CQE compression feature on Windows.
feature is enabled by default unless not supported by the HW
or if the rxq_cqe_comp_en PMD argument is explicitly disabled.
Signed-off-by: Tal Shnaiderman <tal...@nvidia.com>
Tested-by: Pier Damouny <pdamo...@nvidia.com>
Acked-by: Matan Azrad <ma...@nvidia.com>
---
drivers/common/mlx5/mlx5_devx_cmds.c | 2 ++
drivers/common/mlx5/mlx5_devx_cmds.h | 1 +
drivers/net/mlx5/windows/mlx5_os.c | 12 ++++++++++++
3 files changed, 15 insertions(+)
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c
b/drivers/common/mlx5/mlx5_devx_cmds.c
index 096bd1d520..a31e4995f5 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -1062,6 +1062,8 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
attr->cqe_compression = MLX5_GET(cmd_hca_cap, hcattr, cqe_compression);
attr->mini_cqe_resp_flow_tag = MLX5_GET(cmd_hca_cap, hcattr,
mini_cqe_resp_flow_tag);
+ attr->cqe_compression_128 = MLX5_GET(cmd_hca_cap, hcattr,
+ cqe_compression_128);
attr->mini_cqe_resp_l3_l4_tag = MLX5_GET(cmd_hca_cap, hcattr,
mini_cqe_resp_l3_l4_tag);
attr->enhanced_cqe_compression = MLX5_GET(cmd_hca_cap, hcattr,
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h
b/drivers/common/mlx5/mlx5_devx_cmds.h
index 9e7992b1c6..edcd867c4e 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -284,6 +284,7 @@ struct mlx5_hca_attr {
uint16_t max_wqe_sz_sq;
uint32_t striding_rq:1;
uint32_t ext_stride_num_range:1;
+ uint32_t cqe_compression_128:1;
uint32_t set_reg_c:8;
uint32_t nic_flow_table:1;
uint32_t modify_outer_ip_ecn:1;
diff --git a/drivers/net/mlx5/windows/mlx5_os.c
b/drivers/net/mlx5/windows/mlx5_os.c
index 0caa8931e4..6527269663 100644
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -237,6 +237,18 @@ mlx5_os_capabilities_prepare(struct mlx5_dev_ctx_shared
*sh)
} else {
DRV_LOG(DEBUG, "Tunnel offloading is not supported.");
}
+ sh->dev_cap.cqe_comp = 0;
+#if (RTE_CACHE_LINE_SIZE == 128)
+ if (hca_attr->cqe_compression_128)
+ sh->dev_cap.cqe_comp = 1;
+ DRV_LOG(DEBUG, "Rx CQE 128B compression is %ssupported.",
+ sh->dev_cap.cqe_comp ? "" : "not ");
+#else
+ if (hca_attr->cqe_compression)
+ sh->dev_cap.cqe_comp = 1;
+ DRV_LOG(DEBUG, "Rx CQE compression is %ssupported.",
+ sh->dev_cap.cqe_comp ? "" : "not ");
+#endif
snprintf(sh->dev_cap.fw_ver, 64, "%x.%x.%04x",
MLX5_GET(initial_seg, pv_iseg, fw_rev_major),
MLX5_GET(initial_seg, pv_iseg, fw_rev_minor),
--
2.16.1.windows.4
