net/mlx5: support TSO offload on Windows

Support of the TSO offloading by checking
the relevant FW capability for NIC support.

Supported offloads:

DEV_TX_OFFLOAD_TCP_TSO
DEV_TX_OFFLOAD_VXLAN_TNL_TSO
DEV_TX_OFFLOAD_GRE_TNL_TSO
DEV_TX_OFFLOAD_GENEVE_TNL_TSO

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 c1bd3d5..5b34792 100644 (file)
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -123,6 +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).
 
 * **Updated Solarflare network PMD.**
 

diff --git a/drivers/net/mlx5/windows/mlx5_os.c b/drivers/net/mlx5/windows/mlx5_os.c
index 1eaf261..edcdff8 100644 (file)
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -165,6 +165,7 @@ mlx5_os_get_dev_attr(void *ctx, struct mlx5_dev_attr *device_attr)
        device_attr->max_pd = 1 << hca_attr.log_max_pd;
        device_attr->max_srq = 1 << hca_attr.log_max_srq;
        device_attr->max_srq_wr = 1 << hca_attr.log_max_srq_sz;
+       device_attr->max_tso = 1 << hca_attr.max_lso_cap;
        if (hca_attr.rss_ind_tbl_cap) {
                device_attr->max_rwq_indirection_table_size =
                        1 << hca_attr.rss_ind_tbl_cap;
@@ -494,6 +495,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
                DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
                config->hw_padding = 0;
        }
+       config->tso = (sh->device_attr.max_tso > 0);
        if (config->tso)
                config->tso_max_payload_sz = sh->device_attr.max_tso;
        DRV_LOG(DEBUG, "%sMPS is %s.",