#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
+/* All 64-bit integers within Netlink messages are 4-byte aligned only. */
struct ovs_dp_stats {
__u64 n_hit; /* Number of flow table matches. */
__u64 n_missed; /* Number of flow table misses. */
/* 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)
* @OVS_PACKET_ATTR_KEY: Present for all notifications. Contains the flow key
* extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
* userspace to adapt its flow setup strategy by comparing its notion of the
- * flow key against the kernel's.
+ * flow key against the kernel's. When used with %OVS_PACKET_CMD_EXECUTE, only
+ * metadata key fields (e.g. priority, skb mark) are honored. All the packet
+ * header fields are parsed from the packet instead.
* @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used
* for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
* @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION
* 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.
*
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
};
OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
OVS_KEY_ATTR_SCTP, /* struct ovs_key_sctp */
OVS_KEY_ATTR_TCP_FLAGS, /* be16 TCP flags. */
-
+ OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
+ is not computed by the datapath. */
+ OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
#ifdef __KERNEL__
+ /* Only used within kernel data path. */
OVS_KEY_ATTR_IPV4_TUNNEL, /* struct ovs_key_ipv4_tunnel */
#endif
+ /* Experimental */
OVS_KEY_ATTR_MPLS = 62, /* array of struct ovs_key_mpls.
* The implementation may restrict
* @OVS_FLOW_ATTR_ACTIONS: Nested %OVS_ACTION_ATTR_* attributes specifying
* the actions to take for packets that match the key. Always present in
* notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
- * %OVS_FLOW_CMD_SET requests.
+ * %OVS_FLOW_CMD_SET requests. An %OVS_FLOW_CMD_SET without
+ * %OVS_FLOW_ATTR_ACTIONS will not modify the actions. To clear the actions,
+ * an %OVS_FLOW_ATTR_ACTIONS without any nested attributes must be given.
* @OVS_FLOW_ATTR_STATS: &struct ovs_flow_stats giving statistics for this
* flow. Present in notifications if the stats would be nonzero. Ignored in
* requests.
__be16 vlan_tci; /* 802.1Q TCI (VLAN ID and priority). */
};
+/* Data path hash algorithm for computing Datapath hash.
+ *
+ * The algorithm type only specifies the fields in a flow
+ * will be used as part of the hash. Each datapath is free
+ * to use its own hash algorithm. The hash value will be
+ * opaque to the user space daemon.
+ */
+enum ovs_hash_alg {
+ OVS_HASH_ALG_L4,
+};
+/*
+ * struct ovs_action_hash - %OVS_ACTION_ATTR_HASH action argument.
+ * @hash_alg: Algorithm used to compute hash prior to recirculation.
+ * @hash_basis: basis used for computing hash.
+ */
+struct ovs_action_hash {
+ uint32_t hash_alg; /* One of ovs_hash_alg. */
+ uint32_t hash_basis;
+};
+
/**
* enum ovs_action_attr - Action types.
*
* indicate the new packet contents. This could potentially still be
* %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
* is no MPLS label stack, as determined by ethertype, no action is taken.
+ * @OVS_ACTION_RECIRC: Recirculate within the data path.
*
* Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
* fields within a header are modifiable, e.g. the IPv4 protocol and fragment
OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
OVS_ACTION_ATTR_PUSH_MPLS, /* struct ovs_action_push_mpls. */
OVS_ACTION_ATTR_POP_MPLS, /* __be16 ethertype. */
+ OVS_ACTION_ATTR_RECIRC, /* u32 recirc_id. */
+ OVS_ACTION_ATTR_HASH, /* struct ovs_action_hash. */
__OVS_ACTION_ATTR_MAX
};