[dpdk-dev] [RFC v2] ethdev: add generic MAC address rewrite actions

[Xiaoyu Min <jackmin@mellanox.com>]

There is a need to offload rewrite outermost MAC address for both
destination and source from the matched flow

The proposed actions could make above easily achieved

Signed-off-by: Xiaoyu Min <jackmin@mellanox.com>
---
v2:
- Updated description about the MAC address is the outermost one

 lib/librte_ethdev/rte_flow.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index f8ba71cdb..c9cce1049 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -1505,6 +1505,26 @@ enum rte_flow_action_type {
 	 * error.
 	 */
 	RTE_FLOW_ACTION_TYPE_NVGRE_DECAP,
+
+	/**
+	 * Set outermost source MAC address from matched flow.
+	 *
+	 * If flow pattern does not define a valid RTE_FLOW_ITEM_TYPE_ETH,
+	 * the PMD should return a RTE_FLOW_ERROR_TYPE_ACTION error.
+	 *
+	 * See struct rte_flow_action_set_mac.
+	 */
+	RTE_FLOW_ACTION_TYPE_SET_MAC_SRC,
+
+	/**
+	 * Set outermost destination MAC address from matched flow.
+	 *
+	 * If flow pattern does not define a valid RTE_FLOW_ITEM_TYPE_ETH,
+	 * the PMD should return a RTE_FLOW_ERROR_TYPE_ACTION error.
+	 *
+	 * See struct rte_flow_action_set_mac.
+	 */
+	RTE_FLOW_ACTION_TYPE_SET_MAC_DST,
 };
 
 /**
@@ -1868,6 +1888,18 @@ struct rte_flow_action_nvgre_encap {
 	struct rte_flow_item *definition;
 };
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * RTE_FLOW_ACTION_TYPE_SET_MAC
+ *
+ * Set outermost MAC address from the matched flow
+ */
+struct rte_flow_action_set_mac {
+	uint8_t mac_addr[ETHER_ADDR_LEN];
+};
+
 /*
  * Definition of a single action.
  *
-- 
2.17.1