net/mlx5: support keeping CRC on Windows

Support of the keep-CRC offloading by checking
the relevant FW capability (scatter_fcs) for NIC support.

Supported offload:

DEV_RX_OFFLOAD_KEEP_CRC

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
Tested-by: Idan Hackmon <idanhac@nvidia.com>

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index ed652d3..a7baa78 100644 (file)
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -123,7 +123,7 @@ New Features
   Updated the Mellanox mlx5 driver with new features and improvements, including:
 
   * Added implicit mempool registration to avoid data path hiccups (opt-out).
-  * Added NIC offloads for the PMD on Windows (TSO, VLAN strip).
+  * Added NIC offloads for the PMD on Windows (TSO, VLAN strip, CRC keep).
 
 * **Updated Solarflare network PMD.**
 

diff --git a/drivers/net/mlx5/windows/mlx5_os.c b/drivers/net/mlx5/windows/mlx5_os.c
index a000ed1..4ecf018 100644 (file)
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -525,6 +525,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
                config->hw_vlan_strip = config->hca_attr.vlan_cap;
                DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
                        (config->hw_vlan_strip ? "" : "not "));
+               config->hw_fcs_strip = config->hca_attr.scatter_fcs;
        }
        if (config->devx) {
                uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)];