Introduce a rte flow query function as a pre-step towards reading HW
statistics of fully offloaded flows.

Signed-off-by: Eli Britstein <[email protected]>
Reviewed-by: Oz Shlomo <[email protected]>
---
 lib/netdev-dpdk.c | 25 +++++++++++++++++++++++++
 lib/netdev-dpdk.h |  6 ++++++
 2 files changed, 31 insertions(+)

diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
index 327fa7698..c509ffad3 100644
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -4501,6 +4501,31 @@ netdev_dpdk_rte_flow_create(struct netdev *netdev,
     return flow;
 }
 
+int
+netdev_dpdk_rte_flow_query(struct netdev *netdev,
+                           struct rte_flow *rte_flow,
+                           struct rte_flow_query_count *query,
+                           struct rte_flow_error *error)
+{
+    struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
+    struct rte_flow_action_count count = {};
+    const struct rte_flow_action actions[] = {
+        {
+            .type = RTE_FLOW_ACTION_TYPE_COUNT,
+            .conf = &count,
+        },
+        {
+            .type = RTE_FLOW_ACTION_TYPE_END,
+        },
+    };
+    int ret;
+
+    ovs_mutex_lock(&dev->mutex);
+    ret = rte_flow_query(dev->port_id, rte_flow, actions, query, error);
+    ovs_mutex_unlock(&dev->mutex);
+    return ret;
+}
+
 int
 netdev_dpdk_rte_flow_flush(struct netdev *netdev,
                            struct rte_flow_error *error)
diff --git a/lib/netdev-dpdk.h b/lib/netdev-dpdk.h
index 960aec7a8..8e79bcdf8 100644
--- a/lib/netdev-dpdk.h
+++ b/lib/netdev-dpdk.h
@@ -31,6 +31,7 @@ struct rte_flow_error;
 struct rte_flow_attr;
 struct rte_flow_item;
 struct rte_flow_action;
+struct rte_flow_query_count;
 
 void netdev_dpdk_register(void);
 void free_dpdk_buf(struct dp_packet *);
@@ -50,6 +51,11 @@ netdev_dpdk_rte_flow_create(struct netdev *netdev,
 int
 netdev_dpdk_rte_flow_flush(struct netdev *netdev,
                            struct rte_flow_error *error);
+int
+netdev_dpdk_rte_flow_query(struct netdev *netdev,
+                           struct rte_flow *rte_flow,
+                           struct rte_flow_query_count *query,
+                           struct rte_flow_error *error);
 
 #else
 
-- 
2.14.5

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