mlx5: Add new DM type, encap-sw

Add a new DM type for the SW encap action creation. Currently the encap action creation is through DevX, whose max amount of actions can be created is small. The new SW encap type can increase the max amount of actions. Signed-off-by: Shun Hao <[email protected]> Reviewed-by: Yevgeny Kliteynik <[email protected]> Signed-off-by: Yishai Hadas <[email protected]>
linux-rdma · Dec 14, 2023 · e7c2d17 · e7c2d17
1 parent 40bf3c4
commit e7c2d17
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diff --git a/providers/mlx5/man/mlx5dv_alloc_dm.3.md b/providers/mlx5/man/mlx5dv_alloc_dm.3.md
@@ -67,6 +67,11 @@ struct mlx5dv_alloc_dm_attr {
   patterns/templates. Can be used for direct table and header modification
   rules creation when allocated by a privileged user.
 
+ MLX5DV_DM_TYPE_ENCAP_SW_ICM
+  Device memory of type PACKET ENCAP SW ICM - This memory
+  is used by the device to store packet encap data.
+  Can be used for packet encap reformat rules creation
+  when allocated by a privileged user.
 
 *comp_mask*
 : Bitmask specifying what fields in the structure are valid:

diff --git a/providers/mlx5/mlx5_api.h b/providers/mlx5/mlx5_api.h
@@ -55,6 +55,7 @@
 #define MLX5DV_DM_TYPE_STEERING_SW_ICM MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM
 #define MLX5DV_DM_TYPE_HEADER_MODIFY_SW_ICM MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM
 #define MLX5DV_DM_TYPE_HEADER_MODIFY_PATTERN_SW_ICM MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_PATTERN_SW_ICM
+#define MLX5DV_DM_TYPE_ENCAP_SW_ICM MLX5_IB_UAPI_DM_TYPE_ENCAP_SW_ICM
 #define mlx5dv_devx_create_event_channel_flags mlx5_ib_uapi_devx_create_event_channel_flags
 #define MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA
 #define MLX5DV_PP_ALLOC_FLAGS_DEDICATED_INDEX MLX5_IB_UAPI_PP_ALLOC_FLAGS_DEDICATED_INDEX

diff --git a/providers/mlx5/verbs.c b/providers/mlx5/verbs.c
@@ -5009,6 +5009,7 @@ _mlx5dv_alloc_dm(struct ibv_context *context,
  int err;
 
  if ((mlx5_dm_attr->type != MLX5DV_DM_TYPE_MEMIC) &&
+ (mlx5_dm_attr->type != MLX5DV_DM_TYPE_ENCAP_SW_ICM) &&
  (mlx5_dm_attr->type != MLX5DV_DM_TYPE_STEERING_SW_ICM) &&
  (mlx5_dm_attr->type != MLX5DV_DM_TYPE_HEADER_MODIFY_SW_ICM) &&
  (mlx5_dm_attr->type != MLX5DV_DM_TYPE_HEADER_MODIFY_PATTERN_SW_ICM)) {