[dpdk-dev] [PATCH] net/ice: support flow redirect function

[Beilei Xing <beilei.xing@intel.com>]

Add a new ops "redirect" to flow engine, it's used to implement the
function that redirect a flow's destination. Currently only support
VSI-Redirect which will be used by DCF for handling VSI mapping table
change.
A new API "ice_flow_redirect" is exposed, current usage is: it could
be called when VSI mapping table change happens.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/ice_generic_flow.c | 22 ++++++++++++++++++++++
 drivers/net/ice/ice_generic_flow.h | 21 +++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/drivers/net/ice/ice_generic_flow.c b/drivers/net/ice/ice_generic_flow.c
index a1648ee..823ff0e 100644
--- a/drivers/net/ice/ice_generic_flow.c
+++ b/drivers/net/ice/ice_generic_flow.c
@@ -1961,3 +1961,25 @@ ice_flow_query(struct rte_eth_dev *dev,
 	}
 	return ret;
 }
+
+int
+ice_flow_redirect(struct ice_adapter *ad,
+		  struct ice_flow_redirect *rd)
+{
+	struct ice_pf *pf = &ad->pf;
+	struct rte_flow *p_flow;
+	void *temp;
+	int ret;
+
+	TAILQ_FOREACH_SAFE(p_flow, &pf->flow_list, node, temp) {
+		if (!p_flow->engine->redirect)
+			continue;
+		ret = p_flow->engine->redirect(ad, p_flow, rd);
+		if (ret) {
+			PMD_DRV_LOG(ERR, "Failed to redirect flows");
+			return ret;
+		}
+	}
+
+	return 0;
+}
diff --git a/drivers/net/ice/ice_generic_flow.h b/drivers/net/ice/ice_generic_flow.h
index adc30ee..ede6ec8 100644
--- a/drivers/net/ice/ice_generic_flow.h
+++ b/drivers/net/ice/ice_generic_flow.h
@@ -417,6 +417,20 @@ struct ice_pattern_match_item {
 	void *meta;
 };
 
+enum ice_flow_redirect_type {
+	ICE_FLOW_REDIRECT_VSI,
+};
+
+struct ice_flow_redirect {
+	enum ice_flow_redirect_type type;
+	union {
+		struct {
+			uint16_t vsi_handle;
+			uint16_t new_vsi_num;
+		};
+	};
+};
+
 typedef int (*engine_init_t)(struct ice_adapter *ad);
 typedef void (*engine_uninit_t)(struct ice_adapter *ad);
 typedef int (*engine_create_t)(struct ice_adapter *ad,
@@ -430,6 +444,9 @@ typedef int (*engine_query_t)(struct ice_adapter *ad,
 		struct rte_flow *flow,
 		struct rte_flow_query_count *count,
 		struct rte_flow_error *error);
+typedef int(*engine_redirect_t)(struct ice_adapter *ad,
+				struct rte_flow *flow,
+				struct ice_flow_redirect *redirect);
 typedef void (*engine_free_t) (struct rte_flow *flow);
 typedef int (*parse_pattern_action_t)(struct ice_adapter *ad,
 		struct ice_pattern_match_item *array,
@@ -447,6 +464,7 @@ struct ice_flow_engine {
 	engine_create_t create;
 	engine_destroy_t destroy;
 	engine_query_t query_count;
+	engine_redirect_t redirect;
 	engine_free_t free;
 	enum ice_flow_engine_type type;
 };
@@ -485,4 +503,7 @@ ice_search_pattern_match_item(const struct rte_flow_item pattern[],
 		struct ice_pattern_match_item *array,
 		uint32_t array_len,
 		struct rte_flow_error *error);
+int
+ice_flow_redirect(struct ice_adapter *ad,
+		  struct ice_flow_redirect *rd);
 #endif
-- 
2.7.4