netdev-offload-dpdk: Support offload of output action.

Support offload of output action, also configuring count action for
allowing query statistics of HW offloaded flows.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

1 files changed, 82 insertions, 4 deletions

diff --git a/lib/netdev-offload-dpdk.c b/lib/netdev-offload-dpdk.c
index dec3f60ec..785ebf96a 100644
--- a/lib/netdev-offload-dpdk.c
+++ b/lib/netdev-offload-dpdk.c
@@ -347,6 +347,26 @@ dump_flow_action(struct ds *s, const struct rte_flow_action *actions)
         } else {
             ds_put_cstr(s, "  RSS = null\n");
         }
+    } else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT) {
+        const struct rte_flow_action_count *count = actions->conf;
+
+        ds_put_cstr(s, "rte flow count action:\n");
+        if (count) {
+            ds_put_format(s, "  Count: shared=%d, id=%d\n", count->shared,
+                          count->id);
+        } else {
+            ds_put_cstr(s, "  Count = null\n");
+        }
+    } else if (actions->type == RTE_FLOW_ACTION_TYPE_PORT_ID) {
+        const struct rte_flow_action_port_id *port_id = actions->conf;
+
+        ds_put_cstr(s, "rte flow port-id action:\n");
+        if (port_id) {
+            ds_put_format(s, "  Port-id: original=%d, id=%d\n",
+                          port_id->original, port_id->id);
+        } else {
+            ds_put_cstr(s, "  Port-id = null\n");
+        }
     } else {
         ds_put_format(s, "unknown rte flow action (%d)\n", actions->type);
     }
@@ -724,19 +744,77 @@ netdev_offload_dpdk_mark_rss(struct flow_patterns *patterns,
     return flow;
 }
 
+static void
+add_count_action(struct flow_actions *actions)
+{
+    struct rte_flow_action_count *count = xzalloc(sizeof *count);
+
+    add_flow_action(actions, RTE_FLOW_ACTION_TYPE_COUNT, count);
+}
+
 static int
-parse_flow_actions(struct netdev *netdev OVS_UNUSED,
+add_port_id_action(struct flow_actions *actions,
+                   struct netdev *outdev)
+{
+    struct rte_flow_action_port_id *port_id;
+    int outdev_id;
+
+    outdev_id = netdev_dpdk_get_port_id(outdev);
+    if (outdev_id < 0) {
+        return -1;
+    }
+    port_id = xzalloc(sizeof *port_id);
+    port_id->id = outdev_id;
+    add_flow_action(actions, RTE_FLOW_ACTION_TYPE_PORT_ID, port_id);
+    return 0;
+}
+
+static int
+add_output_action(struct netdev *netdev,
+                  struct flow_actions *actions,
+                  const struct nlattr *nla,
+                  struct offload_info *info)
+{
+    struct netdev *outdev;
+    odp_port_t port;
+    int ret = 0;
+
+    port = nl_attr_get_odp_port(nla);
+    outdev = netdev_ports_get(port, info->dpif_class);
+    if (outdev == NULL) {
+        VLOG_DBG_RL(&rl, "Cannot find netdev for odp port %"PRIu32, port);
+        return -1;
+    }
+    if (!netdev_flow_api_equals(netdev, outdev) ||
+        add_port_id_action(actions, outdev)) {
+        VLOG_DBG_RL(&rl, "%s: Output to port \'%s\' cannot be offloaded.",
+                    netdev_get_name(netdev), netdev_get_name(outdev));
+        ret = -1;
+    }
+    netdev_close(outdev);
+    return ret;
+}
+
+static int
+parse_flow_actions(struct netdev *netdev,
                    struct flow_actions *actions,
                    struct nlattr *nl_actions,
                    size_t nl_actions_len,
-                   struct offload_info *info OVS_UNUSED)
+                   struct offload_info *info)
 {
     struct nlattr *nla;
     size_t left;
 
+    add_count_action(actions);
     NL_ATTR_FOR_EACH_UNSAFE (nla, left, nl_actions, nl_actions_len) {
-        VLOG_DBG_RL(&rl, "Unsupported action type %d", nl_attr_type(nla));
-        return -1;
+        if (nl_attr_type(nla) == OVS_ACTION_ATTR_OUTPUT) {
+            if (add_output_action(netdev, actions, nla, info)) {
+                return -1;
+            }
+        } else {
+            VLOG_DBG_RL(&rl, "Unsupported action type %d", nl_attr_type(nla));
+            return -1;
+        }
     }
 
     if (nl_actions_len == 0) {