datapath: Allow each vport to have an array of 'port_id's.

[sliver-openvswitch.git] / include / linux / openvswitch.h

diff --git a/include/linux/openvswitch.h b/include/linux/openvswitch.h
index a88f6f1..b3977d1 100644 (file)
--- a/include/linux/openvswitch.h
+++ b/include/linux/openvswitch.h
@@ -138,6 +138,9 @@ struct ovs_vport_stats {
 /* Allow last Netlink attribute to be unaligned */
 #define OVS_DP_F_UNALIGNED     (1 << 0)
 
+/* Allow datapath to associate multiple Netlink PIDs to each vport */
+#define OVS_DP_F_VPORT_PIDS    (1 << 1)
+
 /* Fixed logical ports. */
 #define OVSP_LOCAL      ((__u32)0)
 
@@ -225,9 +228,10 @@ enum ovs_vport_type {
  * this is the name of the network device.  Maximum length %IFNAMSIZ-1 bytes
  * plus a null terminator.
  * @OVS_VPORT_ATTR_OPTIONS: Vport-specific configuration information.
- * @OVS_VPORT_ATTR_UPCALL_PID: The Netlink socket in userspace that
- * OVS_PACKET_CMD_MISS upcalls will be directed to for packets received on
- * this port.  A value of zero indicates that upcalls should not be sent.
+ * @OVS_VPORT_ATTR_UPCALL_PID: The array of Netlink socket pids in userspace
+ * among which OVS_PACKET_CMD_MISS upcalls will be distributed for packets
+ * received on this port.  If this is a single-element array of value 0,
+ * upcalls should not be sent.
  * @OVS_VPORT_ATTR_STATS: A &struct ovs_vport_stats giving statistics for
  * packets sent or received through the vport.
  *
@@ -251,7 +255,8 @@ enum ovs_vport_attr {
        OVS_VPORT_ATTR_TYPE,    /* u32 OVS_VPORT_TYPE_* constant. */
        OVS_VPORT_ATTR_NAME,    /* string name, up to IFNAMSIZ bytes long */
        OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
-       OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */
+       OVS_VPORT_ATTR_UPCALL_PID, /* array of u32 Netlink socket PIDs for */
+                               /* receiving upcalls */
        OVS_VPORT_ATTR_STATS,   /* struct ovs_vport_stats */
        __OVS_VPORT_ATTR_MAX
 };