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Diffstat (limited to 'Documentation/netlink/specs/ovs_flow.yaml')
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diff --git a/Documentation/netlink/specs/ovs_flow.yaml b/Documentation/netlink/specs/ovs_flow.yaml new file mode 100644 index 000000000000..4fdfc6b5cae9 --- /dev/null +++ b/Documentation/netlink/specs/ovs_flow.yaml @@ -0,0 +1,981 @@ +# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) + +name: ovs_flow +version: 1 +protocol: genetlink-legacy +uapi-header: linux/openvswitch.h + +doc: + OVS flow configuration over generic netlink. + +definitions: + - + name: ovs-header + type: struct + doc: | + Header for OVS Generic Netlink messages. + members: + - + name: dp-ifindex + type: u32 + doc: | + ifindex of local port for datapath (0 to make a request not specific + to a datapath). + - + name: ovs-flow-stats + type: struct + members: + - + name: n-packets + type: u64 + doc: Number of matched packets. + - + name: n-bytes + type: u64 + doc: Number of matched bytes. + - + name: ovs-key-ethernet + type: struct + members: + - + name: eth-src + type: binary + len: 6 + display-hint: mac + - + name: eth-dst + type: binary + len: 6 + display-hint: mac + - + name: ovs-key-mpls + type: struct + members: + - + name: mpls-lse + type: u32 + byte-order: big-endian + - + name: ovs-key-ipv4 + type: struct + members: + - + name: ipv4-src + type: u32 + byte-order: big-endian + display-hint: ipv4 + - + name: ipv4-dst + type: u32 + byte-order: big-endian + display-hint: ipv4 + - + name: ipv4-proto + type: u8 + - + name: ipv4-tos + type: u8 + - + name: ipv4-ttl + type: u8 + - + name: ipv4-frag + type: u8 + enum: ovs-frag-type + - + name: ovs-key-ipv6 + type: struct + members: + - + name: ipv6-src + type: binary + len: 16 + byte-order: big-endian + display-hint: ipv6 + - + name: ipv6-dst + type: binary + len: 16 + byte-order: big-endian + display-hint: ipv6 + - + name: ipv6-label + type: u32 + byte-order: big-endian + - + name: ipv6-proto + type: u8 + - + name: ipv6-tclass + type: u8 + - + name: ipv6-hlimit + type: u8 + - + name: ipv6-frag + type: u8 + - + name: ovs-key-ipv6-exthdrs + type: struct + members: + - + name: hdrs + type: u16 + - + name: ovs-frag-type + name-prefix: ovs-frag-type- + enum-name: ovs-frag-type + type: enum + entries: + - + name: none + doc: Packet is not a fragment. + - + name: first + doc: Packet is a fragment with offset 0. + - + name: later + doc: Packet is a fragment with nonzero offset. + - + name: any + value: 255 + - + name: ovs-key-tcp + type: struct + members: + - + name: tcp-src + type: u16 + byte-order: big-endian + - + name: tcp-dst + type: u16 + byte-order: big-endian + - + name: ovs-key-udp + type: struct + members: + - + name: udp-src + type: u16 + byte-order: big-endian + - + name: udp-dst + type: u16 + byte-order: big-endian + - + name: ovs-key-sctp + type: struct + members: + - + name: sctp-src + type: u16 + byte-order: big-endian + - + name: sctp-dst + type: u16 + byte-order: big-endian + - + name: ovs-key-icmp + type: struct + members: + - + name: icmp-type + type: u8 + - + name: icmp-code + type: u8 + - + name: ovs-key-arp + type: struct + members: + - + name: arp-sip + type: u32 + byte-order: big-endian + - + name: arp-tip + type: u32 + byte-order: big-endian + - + name: arp-op + type: u16 + byte-order: big-endian + - + name: arp-sha + type: binary + len: 6 + display-hint: mac + - + name: arp-tha + type: binary + len: 6 + display-hint: mac + - + name: ovs-key-nd + type: struct + members: + - + name: nd_target + type: binary + len: 16 + byte-order: big-endian + - + name: nd-sll + type: binary + len: 6 + display-hint: mac + - + name: nd-tll + type: binary + len: 6 + display-hint: mac + - + name: ovs-key-ct-tuple-ipv4 + type: struct + members: + - + name: ipv4-src + type: u32 + byte-order: big-endian + - + name: ipv4-dst + type: u32 + byte-order: big-endian + - + name: src-port + type: u16 + byte-order: big-endian + - + name: dst-port + type: u16 + byte-order: big-endian + - + name: ipv4-proto + type: u8 + - + name: ovs-action-push-vlan + type: struct + members: + - + name: vlan_tpid + type: u16 + byte-order: big-endian + doc: Tag protocol identifier (TPID) to push. + - + name: vlan_tci + type: u16 + byte-order: big-endian + doc: Tag control identifier (TCI) to push. + - + name: ovs-ufid-flags + name-prefix: ovs-ufid-f- + enum-name: + type: flags + entries: + - omit-key + - omit-mask + - omit-actions + - + name: ovs-action-hash + type: struct + members: + - + name: hash-alg + type: u32 + doc: Algorithm used to compute hash prior to recirculation. + - + name: hash-basis + type: u32 + doc: Basis used for computing hash. + - + name: ovs-hash-alg + enum-name: ovs-hash-alg + type: enum + doc: | + 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. + entries: + - ovs-hash-alg-l4 + + - + name: ovs-action-push-mpls + type: struct + members: + - + name: mpls-lse + type: u32 + byte-order: big-endian + doc: | + MPLS label stack entry to push + - + name: mpls-ethertype + type: u32 + byte-order: big-endian + doc: | + Ethertype to set in the encapsulating ethernet frame. The only values + ethertype should ever be given are ETH_P_MPLS_UC and ETH_P_MPLS_MC, + indicating MPLS unicast or multicast. Other are rejected. + - + name: ovs-action-add-mpls + type: struct + members: + - + name: mpls-lse + type: u32 + byte-order: big-endian + doc: | + MPLS label stack entry to push + - + name: mpls-ethertype + type: u32 + byte-order: big-endian + doc: | + Ethertype to set in the encapsulating ethernet frame. The only values + ethertype should ever be given are ETH_P_MPLS_UC and ETH_P_MPLS_MC, + indicating MPLS unicast or multicast. Other are rejected. + - + name: tun-flags + type: u16 + doc: | + MPLS tunnel attributes. + - + name: ct-state-flags + enum-name: + type: flags + name-prefix: ovs-cs-f- + entries: + - + name: new + doc: Beginning of a new connection. + - + name: established + doc: Part of an existing connenction + - + name: related + doc: Related to an existing connection. + - + name: reply-dir + doc: Flow is in the reply direction. + - + name: invalid + doc: Could not track the connection. + - + name: tracked + doc: Conntrack has occurred. + - + name: src-nat + doc: Packet's source address/port was mangled by NAT. + - + name: dst-nat + doc: Packet's destination address/port was mangled by NAT. + +attribute-sets: + - + name: flow-attrs + enum-name: ovs-flow-attr + name-prefix: ovs-flow-attr- + attributes: + - + name: key + type: nest + nested-attributes: key-attrs + doc: | + Nested attributes specifying the flow key. Always present in + notifications. Required for all requests (except dumps). + - + name: actions + type: nest + nested-attributes: action-attrs + doc: | + Nested 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. 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. + - + name: stats + type: binary + struct: ovs-flow-stats + doc: | + Statistics for this flow. Present in notifications if the stats would + be nonzero. Ignored in requests. + - + name: tcp-flags + type: u8 + doc: | + An 8-bit value giving the ORed value of all of the TCP flags seen on + packets in this flow. Only present in notifications for TCP flows, and + only if it would be nonzero. Ignored in requests. + - + name: used + type: u64 + doc: | + A 64-bit integer giving the time, in milliseconds on the system + monotonic clock, at which a packet was last processed for this + flow. Only present in notifications if a packet has been processed for + this flow. Ignored in requests. + - + name: clear + type: flag + doc: | + If present in a OVS_FLOW_CMD_SET request, clears the last-used time, + accumulated TCP flags, and statistics for this flow. Otherwise + ignored in requests. Never present in notifications. + - + name: mask + type: nest + nested-attributes: key-attrs + doc: | + Nested attributes specifying the mask bits for wildcarded flow + match. Mask bit value '1' specifies exact match with corresponding + flow key bit, while mask bit value '0' specifies a wildcarded + match. Omitting attribute is treated as wildcarding all corresponding + fields. Optional for all requests. If not present, all flow key bits + are exact match bits. + - + name: probe + type: binary + doc: | + Flow operation is a feature probe, error logging should be suppressed. + - + name: ufid + type: binary + doc: | + A value between 1-16 octets specifying a unique identifier for the + flow. Causes the flow to be indexed by this value rather than the + value of the OVS_FLOW_ATTR_KEY attribute. Optional for all + requests. Present in notifications if the flow was created with this + attribute. + display-hint: uuid + - + name: ufid-flags + type: u32 + enum: ovs-ufid-flags + doc: | + A 32-bit value of ORed flags that provide alternative semantics for + flow installation and retrieval. Optional for all requests. + - + name: pad + type: binary + + - + name: key-attrs + enum-name: ovs-key-attr + name-prefix: ovs-key-attr- + attributes: + - + name: encap + type: nest + nested-attributes: key-attrs + - + name: priority + type: u32 + - + name: in-port + type: u32 + - + name: ethernet + type: binary + struct: ovs-key-ethernet + doc: struct ovs_key_ethernet + - + name: vlan + type: u16 + byte-order: big-endian + - + name: ethertype + type: u16 + byte-order: big-endian + - + name: ipv4 + type: binary + struct: ovs-key-ipv4 + - + name: ipv6 + type: binary + struct: ovs-key-ipv6 + doc: struct ovs_key_ipv6 + - + name: tcp + type: binary + struct: ovs-key-tcp + - + name: udp + type: binary + struct: ovs-key-udp + - + name: icmp + type: binary + struct: ovs-key-icmp + - + name: icmpv6 + type: binary + struct: ovs-key-icmp + - + name: arp + type: binary + struct: ovs-key-arp + doc: struct ovs_key_arp + - + name: nd + type: binary + struct: ovs-key-nd + doc: struct ovs_key_nd + - + name: skb-mark + type: u32 + - + name: tunnel + type: nest + nested-attributes: tunnel-key-attrs + - + name: sctp + type: binary + struct: ovs-key-sctp + - + name: tcp-flags + type: u16 + byte-order: big-endian + - + name: dp-hash + type: u32 + doc: Value 0 indicates the hash is not computed by the datapath. + - + name: recirc-id + type: u32 + - + name: mpls + type: binary + struct: ovs-key-mpls + - + name: ct-state + type: u32 + enum: ct-state-flags + enum-as-flags: true + - + name: ct-zone + type: u16 + doc: connection tracking zone + - + name: ct-mark + type: u32 + doc: connection tracking mark + - + name: ct-labels + type: binary + display-hint: hex + doc: 16-octet connection tracking label + - + name: ct-orig-tuple-ipv4 + type: binary + struct: ovs-key-ct-tuple-ipv4 + - + name: ct-orig-tuple-ipv6 + type: binary + doc: struct ovs_key_ct_tuple_ipv6 + - + name: nsh + type: nest + nested-attributes: ovs-nsh-key-attrs + - + name: packet-type + type: u32 + byte-order: big-endian + doc: Should not be sent to the kernel + - + name: nd-extensions + type: binary + doc: Should not be sent to the kernel + - + name: tunnel-info + type: binary + doc: struct ip_tunnel_info + - + name: ipv6-exthdrs + type: binary + struct: ovs-key-ipv6-exthdrs + doc: struct ovs_key_ipv6_exthdr + - + name: action-attrs + enum-name: ovs-action-attr + name-prefix: ovs-action-attr- + attributes: + - + name: output + type: u32 + doc: ovs port number in datapath + - + name: userspace + type: nest + nested-attributes: userspace-attrs + - + name: set + type: nest + nested-attributes: key-attrs + doc: Replaces the contents of an existing header. The single nested attribute specifies a header to modify and its value. + - + name: push-vlan + type: binary + struct: ovs-action-push-vlan + doc: Push a new outermost 802.1Q or 802.1ad header onto the packet. + - + name: pop-vlan + type: flag + doc: Pop the outermost 802.1Q or 802.1ad header from the packet. + - + name: sample + type: nest + nested-attributes: sample-attrs + doc: | + Probabilistically executes actions, as specified in the nested attributes. + - + name: recirc + type: u32 + doc: recirc id + - + name: hash + type: binary + struct: ovs-action-hash + - + name: push-mpls + type: binary + struct: ovs-action-push-mpls + doc: | + Push a new MPLS label stack entry onto the top of the packets MPLS + label stack. Set the ethertype of the encapsulating frame to either + ETH_P_MPLS_UC or ETH_P_MPLS_MC to indicate the new packet contents. + - + name: pop-mpls + type: u16 + byte-order: big-endian + doc: ethertype + - + name: set-masked + type: nest + nested-attributes: key-attrs + doc: | + Replaces the contents of an existing header. A nested attribute + specifies a header to modify, its value, and a mask. For every bit set + in the mask, the corresponding bit value is copied from the value to + the packet header field, rest of the bits are left unchanged. The + non-masked value bits must be passed in as zeroes. Masking is not + supported for the OVS_KEY_ATTR_TUNNEL attribute. + - + name: ct + type: nest + nested-attributes: ct-attrs + doc: | + Track the connection. Populate the conntrack-related entries + in the flow key. + - + name: trunc + type: u32 + doc: struct ovs_action_trunc is a u32 max length + - + name: push-eth + type: binary + doc: struct ovs_action_push_eth + - + name: pop-eth + type: flag + - + name: ct-clear + type: flag + - + name: push-nsh + type: nest + nested-attributes: ovs-nsh-key-attrs + doc: | + Push NSH header to the packet. + - + name: pop-nsh + type: flag + doc: | + Pop the outermost NSH header off the packet. + - + name: meter + type: u32 + doc: | + Run packet through a meter, which may drop the packet, or modify the + packet (e.g., change the DSCP field) + - + name: clone + type: nest + nested-attributes: action-attrs + doc: | + Make a copy of the packet and execute a list of actions without + affecting the original packet and key. + - + name: check-pkt-len + type: nest + nested-attributes: check-pkt-len-attrs + doc: | + Check the packet length and execute a set of actions if greater than + the specified packet length, else execute another set of actions. + - + name: add-mpls + type: binary + struct: ovs-action-add-mpls + doc: | + Push a new MPLS label stack entry at the start of the packet or at the + start of the l3 header depending on the value of l3 tunnel flag in the + tun_flags field of this OVS_ACTION_ATTR_ADD_MPLS argument. + - + name: dec-ttl + type: nest + nested-attributes: dec-ttl-attrs + - + name: tunnel-key-attrs + enum-name: ovs-tunnel-key-attr + name-prefix: ovs-tunnel-key-attr- + attributes: + - + name: id + type: u64 + byte-order: big-endian + value: 0 + - + name: ipv4-src + type: u32 + byte-order: big-endian + - + name: ipv4-dst + type: u32 + byte-order: big-endian + - + name: tos + type: u8 + - + name: ttl + type: u8 + - + name: dont-fragment + type: flag + - + name: csum + type: flag + - + name: oam + type: flag + - + name: geneve-opts + type: binary + sub-type: u32 + - + name: tp-src + type: u16 + byte-order: big-endian + - + name: tp-dst + type: u16 + byte-order: big-endian + - + name: vxlan-opts + type: nest + nested-attributes: vxlan-ext-attrs + - + name: ipv6-src + type: binary + doc: | + struct in6_addr source IPv6 address + - + name: ipv6-dst + type: binary + doc: | + struct in6_addr destination IPv6 address + - + name: pad + type: binary + - + name: erspan-opts + type: binary + doc: | + struct erspan_metadata + - + name: ipv4-info-bridge + type: flag + - + name: check-pkt-len-attrs + enum-name: ovs-check-pkt-len-attr + name-prefix: ovs-check-pkt-len-attr- + attributes: + - + name: pkt-len + type: u16 + - + name: actions-if-greater + type: nest + nested-attributes: action-attrs + - + name: actions-if-less-equal + type: nest + nested-attributes: action-attrs + - + name: sample-attrs + enum-name: ovs-sample-attr + name-prefix: ovs-sample-attr- + attributes: + - + name: probability + type: u32 + - + name: actions + type: nest + nested-attributes: action-attrs + - + name: userspace-attrs + enum-name: ovs-userspace-attr + name-prefix: ovs-userspace-attr- + attributes: + - + name: pid + type: u32 + - + name: userdata + type: binary + - + name: egress-tun-port + type: u32 + - + name: actions + type: flag + - + name: ovs-nsh-key-attrs + enum-name: ovs-nsh-key-attr + name-prefix: ovs-nsh-key-attr- + attributes: + - + name: base + type: binary + - + name: md1 + type: binary + - + name: md2 + type: binary + - + name: ct-attrs + enum-name: ovs-ct-attr + name-prefix: ovs-ct-attr- + attributes: + - + name: commit + type: flag + - + name: zone + type: u16 + - + name: mark + type: binary + - + name: labels + type: binary + - + name: helper + type: string + - + name: nat + type: nest + nested-attributes: nat-attrs + - + name: force-commit + type: flag + - + name: eventmask + type: u32 + - + name: timeout + type: string + - + name: nat-attrs + enum-name: ovs-nat-attr + name-prefix: ovs-nat-attr- + attributes: + - + name: src + type: flag + - + name: dst + type: flag + - + name: ip-min + type: binary + - + name: ip-max + type: binary + - + name: proto-min + type: u16 + - + name: proto-max + type: u16 + - + name: persistent + type: flag + - + name: proto-hash + type: flag + - + name: proto-random + type: flag + - + name: dec-ttl-attrs + enum-name: ovs-dec-ttl-attr + name-prefix: ovs-dec-ttl-attr- + attributes: + - + name: action + type: nest + nested-attributes: action-attrs + - + name: vxlan-ext-attrs + enum-name: ovs-vxlan-ext- + name-prefix: ovs-vxlan-ext- + attributes: + - + name: gbp + type: u32 + +operations: + name-prefix: ovs-flow-cmd- + fixed-header: ovs-header + list: + - + name: get + doc: Get / dump OVS flow configuration and state + value: 3 + attribute-set: flow-attrs + do: &flow-get-op + request: + attributes: + - key + - ufid + - ufid-flags + reply: + attributes: + - key + - ufid + - mask + - stats + - actions + dump: *flow-get-op + - + name: new + doc: Create OVS flow configuration in a data path + value: 1 + attribute-set: flow-attrs + do: + request: + attributes: + - key + - ufid + - mask + - actions + +mcast-groups: + list: + - + name: ovs_flow |