#include <linux/types.h>
-/* datapaths. */
+/**
+ * struct ovs_header - header for OVS Generic Netlink messages.
+ * @dp_ifindex: ifindex of local port for datapath (0 to make a request not
+ * specific to a datapath).
+ *
+ * Attributes following the header are specific to a particular OVS Generic
+ * Netlink family, but all of the OVS families use this header.
+ */
+
+struct ovs_header {
+ int dp_ifindex;
+};
+
+/* Datapaths. */
#define OVS_DATAPATH_FAMILY "ovs_datapath"
#define OVS_DATAPATH_MCGROUP "ovs_datapath"
+#define OVS_DATAPATH_VERSION 0x1
enum ovs_datapath_cmd {
OVS_DP_CMD_UNSPEC,
OVS_DP_CMD_SET
};
-/**
- * struct ovs_header - header for OVS Generic Netlink messages.
- * @dp_ifindex: ifindex of local port for datapath (0 to make a request not
- * specific to a datapath).
- *
- * Attributes following the header are specific to a particular OVS Generic
- * Netlink family, but all of the OVS families use this header.
- */
-struct ovs_header {
- int dp_ifindex;
-};
-\f
/**
* enum ovs_datapath_attr - attributes for %OVS_DP_* commands.
* @OVS_DP_ATTR_NAME: Name of the network device that serves as the "local
* not be sent.
* @OVS_DP_ATTR_STATS: Statistics about packets that have passed through the
* datapath. Always present in notifications.
- * @OVS_DP_ATTR_IPV4_FRAGS: One of %OVS_DP_FRAG_*. Always present in
- * notifications. May be included in %OVS_DP_NEW or %OVS_DP_SET requests to
- * change the fragment handling policy.
*
* These attributes follow the &struct ovs_header within the Generic Netlink
* payload for %OVS_DP_* commands.
OVS_DP_ATTR_NAME, /* name of dp_ifindex netdev */
OVS_DP_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
OVS_DP_ATTR_STATS, /* struct ovs_dp_stats */
- OVS_DP_ATTR_IPV4_FRAGS, /* 32-bit enum ovs_datapath_frag */
__OVS_DP_ATTR_MAX
};
#define OVS_DP_ATTR_MAX (__OVS_DP_ATTR_MAX - 1)
-/**
- * enum ovs_datapath_frag - policy for handling received IPv4 fragments.
- * @OVS_DP_FRAG_ZERO: Treat IP fragments as IP protocol 0 and transport ports
- * zero.
- * @OVS_DP_FRAG_DROP: Drop IP fragments. Do not pass them through the flow
- * table or up to userspace.
- */
-enum ovs_datapath_frag {
- OVS_DP_FRAG_UNSPEC,
- OVS_DP_FRAG_ZERO, /* Treat IP fragments as transport port 0. */
- OVS_DP_FRAG_DROP /* Drop IP fragments. */
-};
-
struct ovs_dp_stats {
- __u64 n_frags; /* Number of dropped IP fragments. */
- __u64 n_hit; /* Number of flow table matches. */
- __u64 n_missed; /* Number of flow table misses. */
- __u64 n_lost; /* Number of misses not sent to userspace. */
- __u64 n_flows; /* Number of flows present */
+ __u64 n_hit; /* Number of flow table matches. */
+ __u64 n_missed; /* Number of flow table misses. */
+ __u64 n_lost; /* Number of misses not sent to userspace. */
+ __u64 n_flows; /* Number of flows present */
};
struct ovs_vport_stats {
__u64 tx_dropped; /* no space available in linux */
};
-/* Logical ports. */
+/* Fixed logical ports. */
#define OVSP_LOCAL ((__u16)0)
-\f
+
+/* Packet transfer. */
+
#define OVS_PACKET_FAMILY "ovs_packet"
+#define OVS_PACKET_VERSION 0x1
enum ovs_packet_cmd {
- OVS_PACKET_CMD_UNSPEC,
+ OVS_PACKET_CMD_UNSPEC,
- /* Kernel-to-user notifications. */
- OVS_PACKET_CMD_MISS, /* Flow table miss. */
- OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
+ /* Kernel-to-user notifications. */
+ OVS_PACKET_CMD_MISS, /* Flow table miss. */
+ OVS_PACKET_CMD_ACTION, /* OVS_ACTION_ATTR_USERSPACE action. */
- /* User commands. */
- OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
+ /* Userspace commands. */
+ OVS_PACKET_CMD_EXECUTE /* Apply actions to a packet. */
};
/**
};
#define OVS_PACKET_ATTR_MAX (__OVS_PACKET_ATTR_MAX - 1)
-\f
-enum ovs_vport_type {
- OVS_VPORT_TYPE_UNSPEC,
- OVS_VPORT_TYPE_NETDEV, /* network device */
- OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
- OVS_VPORT_TYPE_PATCH, /* virtual tunnel connecting two vports */
- OVS_VPORT_TYPE_GRE, /* GRE tunnel */
- OVS_VPORT_TYPE_CAPWAP, /* CAPWAP tunnel */
- __OVS_VPORT_TYPE_MAX
-};
-#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
-\f
+/* Virtual ports. */
+
#define OVS_VPORT_FAMILY "ovs_vport"
#define OVS_VPORT_MCGROUP "ovs_vport"
+#define OVS_VPORT_VERSION 0x1
enum ovs_vport_cmd {
OVS_VPORT_CMD_UNSPEC,
OVS_VPORT_CMD_SET
};
+enum ovs_vport_type {
+ OVS_VPORT_TYPE_UNSPEC,
+ OVS_VPORT_TYPE_NETDEV, /* network device */
+ OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
+ OVS_VPORT_TYPE_PATCH = 100, /* virtual tunnel connecting two vports */
+ OVS_VPORT_TYPE_GRE, /* GRE tunnel */
+ OVS_VPORT_TYPE_CAPWAP, /* CAPWAP tunnel */
+ __OVS_VPORT_TYPE_MAX
+};
+
+#define OVS_VPORT_TYPE_MAX (__OVS_VPORT_TYPE_MAX - 1)
+
/**
* enum ovs_vport_attr - attributes for %OVS_VPORT_* commands.
* @OVS_VPORT_ATTR_PORT_NO: 32-bit port number within datapath.
* @OVS_VPORT_ATTR_NAME: Name of vport. For a vport based on a network device
* 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.
*/
enum ovs_vport_attr {
OVS_VPORT_ATTR_UNSPEC,
- OVS_VPORT_ATTR_PORT_NO, /* port number within datapath */
- OVS_VPORT_ATTR_TYPE, /* 32-bit OVS_VPORT_TYPE_* constant. */
+ OVS_VPORT_ATTR_PORT_NO, /* u32 port number within datapath */
+ OVS_VPORT_ATTR_TYPE, /* u32 OVS_VPORT_TYPE_* constant. */
OVS_VPORT_ATTR_NAME, /* string name, up to IFNAMSIZ bytes long */
- OVS_VPORT_ATTR_UPCALL_PID, /* Netlink PID to receive upcalls */
- OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
- OVS_VPORT_ATTR_ADDRESS, /* hardware address */
OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
+ OVS_VPORT_ATTR_UPCALL_PID, /* u32 Netlink PID to receive upcalls */
+ OVS_VPORT_ATTR_STATS, /* struct ovs_vport_stats */
+ OVS_VPORT_ATTR_ADDRESS = 100, /* hardware address */
__OVS_VPORT_ATTR_MAX
};
};
#define OVS_PATCH_ATTR_MAX (__OVS_PATCH_ATTR_MAX - 1)
-\f
+
/* Flows. */
#define OVS_FLOW_FAMILY "ovs_flow"
#define OVS_FLOW_MCGROUP "ovs_flow"
+#define OVS_FLOW_VERSION 0x1
enum ovs_flow_cmd {
OVS_FLOW_CMD_UNSPEC,
};
struct ovs_flow_stats {
- __u64 n_packets; /* Number of matched packets. */
- __u64 n_bytes; /* Number of matched bytes. */
+ __u64 n_packets; /* Number of matched packets. */
+ __u64 n_bytes; /* Number of matched bytes. */
};
enum ovs_key_attr {
OVS_KEY_ATTR_UNSPEC,
- OVS_KEY_ATTR_TUN_ID, /* 64-bit tunnel ID */
- OVS_KEY_ATTR_IN_PORT, /* 32-bit OVS dp port number */
+ OVS_KEY_ATTR_PRIORITY, /* u32 skb->priority */
+ OVS_KEY_ATTR_IN_PORT, /* u32 OVS dp port number */
OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
OVS_KEY_ATTR_8021Q, /* struct ovs_key_8021q */
- OVS_KEY_ATTR_ETHERTYPE, /* 16-bit Ethernet type */
+ OVS_KEY_ATTR_ETHERTYPE, /* be16 Ethernet type */
OVS_KEY_ATTR_IPV4, /* struct ovs_key_ipv4 */
OVS_KEY_ATTR_IPV6, /* struct ovs_key_ipv6 */
OVS_KEY_ATTR_TCP, /* struct ovs_key_tcp */
OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */
OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */
OVS_KEY_ATTR_ND, /* struct ovs_key_nd */
+ OVS_KEY_ATTR_TUN_ID = 63, /* be64 tunnel ID */
__OVS_KEY_ATTR_MAX
};
#define OVS_KEY_ATTR_MAX (__OVS_KEY_ATTR_MAX - 1)
+/**
+ * enum ovs_frag_type - IPv4 and IPv6 fragment type
+ * @OVS_FRAG_TYPE_NONE: Packet is not a fragment.
+ * @OVS_FRAG_TYPE_FIRST: Packet is a fragment with offset 0.
+ * @OVS_FRAG_TYPE_LATER: Packet is a fragment with nonzero offset.
+ *
+ * Used as the @ipv4_frag in &struct ovs_key_ipv4 and as @ipv6_frag &struct
+ * ovs_key_ipv6.
+ */
+enum ovs_frag_type {
+ OVS_FRAG_TYPE_NONE,
+ OVS_FRAG_TYPE_FIRST,
+ OVS_FRAG_TYPE_LATER,
+ __OVS_FRAG_TYPE_MAX
+};
+
+#define OVS_FRAG_TYPE_MAX (__OVS_FRAG_TYPE_MAX - 1)
+
struct ovs_key_ethernet {
__u8 eth_src[6];
__u8 eth_dst[6];
__be32 ipv4_dst;
__u8 ipv4_proto;
__u8 ipv4_tos;
+ __u8 ipv4_ttl;
+ __u8 ipv4_frag; /* One of OVS_FRAG_TYPE_*. */
};
struct ovs_key_ipv6 {
__be32 ipv6_src[4];
__be32 ipv6_dst[4];
+ __be32 ipv6_label; /* 20-bits in least-significant bits. */
__u8 ipv6_proto;
- __u8 ipv6_tos;
+ __u8 ipv6_tclass;
+ __u8 ipv6_hlimit;
+ __u8 ipv6_frag; /* One of OVS_FRAG_TYPE_*. */
};
struct ovs_key_tcp {
* dumps).
* @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
+ * notifications. Required for %OVS_FLOW_CMD_NEW requests, optional for
+ * %OVS_FLOW_CMD_SET requests.
* @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.
#define OVS_USERSPACE_ATTR_MAX (__OVS_USERSPACE_ATTR_MAX - 1)
/**
- * enum ovs_action_attr - Action types.
+ * enum ovs_action_attr - Action types.
*
- * @OVS_ACTION_ATTR_OUTPUT: Output packet to port passed as NLA data.
- * @OVS_ACTION_ATTR_USERSPACE: Nested %OVS_USERSPACE_ATTR_ attributes specifying
- * PID.
- * @OVS_ACTION_ATTR_PUSH: Nested %OVS_KEY_ATTR_* attribute specifying header to
- * push to given packet.
- * E.g. Push vlan tag action would be NLA of %OVS_ACTION_ATTR_PUSH type with
- * nested attribute of type %OVS_KEY_ATTR_8021Q with struct ovs_key_8021q
- * as NLA data.
+ * @OVS_ACTION_ATTR_OUTPUT: Output packet to port.
+ * @OVS_ACTION_ATTR_USERSPACE: Send packet to userspace according to nested
+ * %OVS_USERSPACE_ATTR_* attributes.
+ * @OVS_ACTION_ATTR_PUSH: Push header onto head of packet. The single nested
+ * %OVS_KEY_ATTR_* attribute specifies a header to push and its value, e.g. a
+ * nested attribute of type %OVS_KEY_ATTR_8021Q, with struct ovs_key_8021q as
+ * argument, would push a VLAN header on the front of the packet.
* @OVS_ACTION_ATTR_POP: Pop header according to %OVS_KEY_ATTR_ sent as
- * attribute data.
- * @OVS_ACTION_ATTR_SET: Nested %OVS_KEY_ATTR_* attribute specifying the
- * field to set to given packet.
- * @OVS_ACTION_ATTR_SET_PRIORITY: A set skb->priority to 32-bit number passed
- * as NLA data.
- * @OVS_ACTION_ATTR_POP_PRIORITY: Restore skb->priority to original value.
- * @OVS_ACTION_ATTR_SAMPLE: Execute set of actions according to probability
- * %OVS_SAMPLE_ATTR_PROBABILITY.
+ * attribute data, e.g. %OVS_KEY_ATTR_8021Q as argument pops an outer VLAN
+ * header.
+ * @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header.
+ * The argument takes the same form as %OVS_ACTION_ATTR_PUSH.
+ * @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
+ * the nested %OVS_SAMPLE_ATTR_* attributes.
*
* Only a single field can be set with a single %OVS_ACTION_ATTR_{SET,PUSH}.
+ * Not all fields are modifiable.
*/
enum ovs_action_attr {
OVS_ACTION_ATTR_UNSPEC,
- OVS_ACTION_ATTR_OUTPUT, /* Output to switch port. */
+ OVS_ACTION_ATTR_OUTPUT, /* u32 port number. */
OVS_ACTION_ATTR_USERSPACE, /* Nested OVS_USERSPACE_ATTR_*. */
- OVS_ACTION_ATTR_PUSH, /* Push packet header. */
- OVS_ACTION_ATTR_POP, /* Pop packet header. */
- OVS_ACTION_ATTR_SET, /* Set packet field(s). */
- OVS_ACTION_ATTR_SET_PRIORITY, /* Set skb->priority. */
- OVS_ACTION_ATTR_POP_PRIORITY, /* Restore original skb->priority. */
+ OVS_ACTION_ATTR_PUSH, /* One nested OVS_KEY_ATTR_*. */
+ OVS_ACTION_ATTR_POP, /* u16 OVS_KEY_ATTR_*. */
+ OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
__OVS_ACTION_ATTR_MAX
};
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