Extend sFlow agent to report tunnel and MPLS structures

[cascardo/ovs.git] / ofproto / ofproto-dpif-sflow.h

diff --git a/ofproto/ofproto-dpif-sflow.h b/ofproto/ofproto-dpif-sflow.h
index ff8b231..014e6cc 100644 (file)
--- a/ofproto/ofproto-dpif-sflow.h
+++ b/ofproto/ofproto-dpif-sflow.h
@@ -28,6 +28,29 @@ struct flow;
 struct ofproto_sflow_options;
 struct ofport;
 
+/* When we have the actions for a sampled packet that
+ * will go to just one output, then this structure is
+ * populated by parsing them.  Only fields relevant to
+ * the sFlow export are extracted.
+ */
+struct dpif_sflow_actions {
+    odp_port_t out_port;     /* ODP output port. */
+
+    uint32_t encap_depth;    /* Count layers of tunnel-encap. */
+    struct flow_tnl tunnel;  /* Egress tunnel push/set. */
+    uint8_t tunnel_ipproto;  /* Tunnel push action can set ipproto. */
+    bool tunnel_err;         /* Tunnel actions parse failure. */
+    
+    /* Using host-byte order for the mpls stack here
+       to match the expectations of the sFlow library. Also
+       the ordering is reversed, so that the entry at offset 0
+       is the bottom of the stack.
+    */
+    uint32_t mpls_lse[FLOW_MAX_MPLS_LABELS]; /* Out stack in host byte order. */
+    uint32_t mpls_stack_depth;               /* Out stack depth. */
+    bool mpls_err;                           /* MPLS actions parse failure. */
+};
+
 struct dpif_sflow *dpif_sflow_create(void);
 struct dpif_sflow *dpif_sflow_ref(const struct dpif_sflow *);
 void dpif_sflow_unref(struct dpif_sflow *);
@@ -46,9 +69,14 @@ void dpif_sflow_del_port(struct dpif_sflow *, odp_port_t odp_port);
 void dpif_sflow_run(struct dpif_sflow *);
 void dpif_sflow_wait(struct dpif_sflow *);
 
+void dpif_sflow_read_actions(const struct flow *,
+                            const struct nlattr *actions, size_t actions_len,
+                            struct dpif_sflow_actions *);
+
 void dpif_sflow_received(struct dpif_sflow *, const struct dp_packet *,
                          const struct flow *, odp_port_t odp_port,
-                         const union user_action_cookie *);
+                         const union user_action_cookie *,
+                        const struct dpif_sflow_actions *);
 
 int dpif_sflow_odp_port_to_ifindex(const struct dpif_sflow *,
                                    odp_port_t odp_port);