[PATCH v2 1/4] common/mlx5: new glue callback for send to kernel action

[Michael Savisko <michaelsav@nvidia.com>]

Add new glue callback dr_create_flow_action_send_to_kernel.
Default callback invokes mlx5dv_dr_action_create_dest_root_table().

Add static inline mlx5_flow_os_create_flow_action_send_to_kernel(),
which calls dr_create_flow_action_send_to_kernel glue callback.

Define HAVE_MLX5DV_DR_ACTION_CREATE_DEST_ROOT_TABLE macro if function
mlx5dv_dr_action_create_dest_root_table exists in infiniband/mlx5dv.h

Signed-off-by: Michael Savisko <michaelsav@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/common/mlx5/linux/meson.build   |  2 ++
 drivers/common/mlx5/linux/mlx5_glue.c   | 17 +++++++++++++++++
 drivers/common/mlx5/linux/mlx5_glue.h   |  2 ++
 drivers/net/mlx5/linux/mlx5_flow_os.h   | 22 ++++++++++++++++++++++
 drivers/net/mlx5/windows/mlx5_flow_os.h | 24 ++++++++++++++++++++++++
 5 files changed, 67 insertions(+)

diff --git a/drivers/common/mlx5/linux/meson.build b/drivers/common/mlx5/linux/meson.build
index e77b46d157..b044f95700 100644
--- a/drivers/common/mlx5/linux/meson.build
+++ b/drivers/common/mlx5/linux/meson.build
@@ -213,6 +213,8 @@ has_sym_args = [
             'ibv_reg_mr_iova' ],
         [ 'HAVE_MLX5_IBV_IMPORT_CTX_PD_AND_MR', 'infiniband/verbs.h',
             'ibv_import_device' ],
+        [ 'HAVE_MLX5DV_DR_ACTION_CREATE_DEST_ROOT_TABLE', 'infiniband/mlx5dv.h',
+            'mlx5dv_dr_action_create_dest_root_table' ],
 ]
 if  libmtcr_ul_found
     has_sym_args += [
diff --git a/drivers/common/mlx5/linux/mlx5_glue.c b/drivers/common/mlx5/linux/mlx5_glue.c
index 450dd6a06a..b954df0784 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.c
+++ b/drivers/common/mlx5/linux/mlx5_glue.c
@@ -1434,6 +1434,21 @@ mlx5_glue_dv_free_pp(struct mlx5dv_pp *pp)
 #endif
 }
 
+static void *
+mlx5_glue_dr_create_flow_action_send_to_kernel(void *tbl, uint16_t priority)
+{
+#ifdef HAVE_MLX5DV_DR_ACTION_CREATE_DEST_ROOT_TABLE
+	struct mlx5dv_dr_table *table = (struct mlx5dv_dr_table *)tbl;
+
+	return mlx5dv_dr_action_create_dest_root_table(table, priority);
+#else
+	RTE_SET_USED(tbl);
+	RTE_SET_USED(priority);
+	errno = ENOTSUP;
+	return NULL;
+#endif
+}
+
 __rte_cache_aligned
 const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue) {
 	.version = MLX5_GLUE_VERSION,
@@ -1561,4 +1576,6 @@ const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue) {
 	.dv_free_var = mlx5_glue_dv_free_var,
 	.dv_alloc_pp = mlx5_glue_dv_alloc_pp,
 	.dv_free_pp = mlx5_glue_dv_free_pp,
+	.dr_create_flow_action_send_to_kernel =
+		mlx5_glue_dr_create_flow_action_send_to_kernel,
 };
diff --git a/drivers/common/mlx5/linux/mlx5_glue.h b/drivers/common/mlx5/linux/mlx5_glue.h
index c4903a6dce..9616dfdd06 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.h
+++ b/drivers/common/mlx5/linux/mlx5_glue.h
@@ -373,6 +373,8 @@ struct mlx5_glue {
 	void *(*dv_create_flow_action_aso)
 			(struct mlx5dv_dr_domain *domain, void *aso_obj,
 			 uint32_t offset, uint32_t flags, uint8_t return_reg_c);
+	void *(*dr_create_flow_action_send_to_kernel)(void *tbl,
+						      uint16_t priority);
 };
 
 extern const struct mlx5_glue *mlx5_glue;
diff --git a/drivers/net/mlx5/linux/mlx5_flow_os.h b/drivers/net/mlx5/linux/mlx5_flow_os.h
index bcb48b3e56..ed71289322 100644
--- a/drivers/net/mlx5/linux/mlx5_flow_os.h
+++ b/drivers/net/mlx5/linux/mlx5_flow_os.h
@@ -368,6 +368,28 @@ mlx5_flow_os_create_flow_action_default_miss(void **action)
 	return (*action) ? 0 : -1;
 }
 
+/**
+ * Create flow action: send_to_kernel.
+ *
+ * @param[in] tbl
+ *   Pointer to destination root table.
+ * @param[in] priority
+ *   Priority to which traffic will arrive.
+ * @param[out] action
+ *   Pointer to a valid action on success, NULL otherwise.
+ *
+ * @return
+ *   0 on success, or -1 on failure and errno is set.
+ */
+static inline int
+mlx5_flow_os_create_flow_action_send_to_kernel(void *tbl, uint16_t priority,
+					  void **action)
+{
+	*action = mlx5_glue->dr_create_flow_action_send_to_kernel(tbl,
+								  priority);
+	return (*action) ? 0 : -1;
+}
+
 /**
  * Create flow action: dest_devx_tir
  *
diff --git a/drivers/net/mlx5/windows/mlx5_flow_os.h b/drivers/net/mlx5/windows/mlx5_flow_os.h
index 347ec64580..1c1c17fc41 100644
--- a/drivers/net/mlx5/windows/mlx5_flow_os.h
+++ b/drivers/net/mlx5/windows/mlx5_flow_os.h
@@ -326,6 +326,30 @@ mlx5_flow_os_create_flow_action_default_miss(void **action)
 	return 0;
 }
 
+/**
+ * Create flow action: send_to_kernel.
+ *
+ * @param[in] tbl
+ *   Pointer to destination root table.
+ * @param[in] priority
+ *   Priority to which traffic will arrive.
+ * @param[out] action
+ *   Pointer to a valid action on success, NULL otherwise.
+ *
+ * @return
+ *   0 on success, or -1 on failure and errno is set.
+ */
+static inline int
+mlx5_flow_os_create_flow_action_send_to_kernel(void *tbl, uint16_t priority,
+					  void **action)
+{
+	RTE_SET_USED(tbl);
+	RTE_SET_USED(priority);
+	*action = NULL;
+	rte_errno = ENOTSUP;
+	return -rte_errno;
+}
+
 /**
  * Create flow action: sampler
  *
-- 
2.27.0