[6/7] net/mlx5: supp modify VLAN ID on new VLAN header

Message ID 4c325d5dcce75f3243fe57bc65866e1b301b240d.1565072905.git.motih@mellanox.com
State New
Delegated to: Raslan Darawsheh
Headers show
Series
  • net/mlx5: support for flow action on VLAN header
Related show

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Moti Haimovsky Aug. 6, 2019, 8:24 a.m.
This commit adds support for modifying the VLAN ID (VID) field
in an about-to-be-pushed VLAN header.
This feature can only modify the VID field of a new VLAN header yet
to be pushed. It does not support modifying an existing or already
pushed VLAN headers.

Signed-off-by: Moti Haimovsky <motih@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 55 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

Patch

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 9ebf006..c9bfad8 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -1024,6 +1024,47 @@  struct field_modify_info modify_tcp[] = {
 }
 
 /**
+ * Validate the set VLAN VID.
+ *
+ * @param[in] action_flags
+ *   Holds the actions detected until now.
+ * @param[in] actions
+ *   Pointer to the list of actions remaining in the flow rule.
+ * @param[in] attr
+ *   Pointer to flow attributes
+ * @param[out] error
+ *   Pointer to error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_action_set_vlan_vid(uint64_t action_flags,
+				     const struct rte_flow_action actions[],
+				     struct rte_flow_error *error)
+{
+	const struct rte_flow_action *action = actions;
+	const struct rte_flow_action_of_set_vlan_vid *conf = action->conf;
+
+	if (conf->vlan_vid > RTE_BE16(0xFFFE))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "VLAN VID value to too big");
+	if (mlx5_flow_find_action(actions,
+				  RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN) == NULL)
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "set VLAN VID can only be used "
+					  "with push VLAN action");
+	if (action_flags & MLX5_FLOW_ACTION_OF_PUSH_VLAN)
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "set VLAN VID action must precede "
+					  "the push VLAN action");
+	return 0;
+}
+
+/**
  * Validate count action.
  *
  * @param[in] dev
@@ -3439,6 +3480,13 @@  struct field_modify_info modify_tcp[] = {
 				return ret;
 			/* Count PCP with push_vlan command. */
 			break;
+		case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
+			ret = flow_dv_validate_action_set_vlan_vid
+						(action_flags, actions, error);
+			if (ret < 0)
+				return ret;
+			/* Count VID with push_vlan command. */
+			break;
 		case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
 		case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
 			ret = flow_dv_validate_action_l2_encap(action_flags,
@@ -5165,6 +5213,13 @@  struct field_modify_info modify_tcp[] = {
 			vlan.tci |= rte_cpu_to_be_16(vlan_tci);
 			/* Push VLAN command will use this value */
 			break;
+		case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
+			vlan.tci &= ~FLOW_DV_VLAN_VID_MASK;
+			vlan.tci |=
+			    ((const struct rte_flow_action_of_set_vlan_vid *)
+						       actions->conf)->vlan_vid;
+			/* Push VLAN command will use this value */
+			break;
 		case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
 		case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
 			if (flow_dv_create_action_l2_encap(dev, actions,