struct ds;
struct match;
-/* The comment on each of these indicates the member in "union mf_value" used
- * to represent its value. */
+/* Open vSwitch fields
+ * ===================
+ *
+ * A "field" is a property of a packet. Most familiarly, "data fields" are
+ * fields that can be extracted from a packet.
+ *
+ * Some data fields are always present as a consequence of the basic networking
+ * technology in use. Ethernet is the assumed base technology for current
+ * versions of OpenFlow and Open vSwitch, so Ethernet header fields are always
+ * available.
+ *
+ * Other data fields are not always present. A packet contains ARP fields, for
+ * example, only when its Ethernet header indicates the Ethertype for ARP,
+ * 0x0806. We say that a field is "applicable" when it is it present in a
+ * packet, and "inapplicable" when it is not, and refer to the conditions that
+ * determine whether a field is applicable as "prerequisites". Some
+ * VLAN-related fields are a special case: these fields are always applicable,
+ * but have a designated value or bit that indicates whether a VLAN header is
+ * present, with the remaining values or bits indicating the VLAN header's
+ * content (if it is present). See MFF_VLAN_TCI for an example.
+ *
+ * Conceptually, an inapplicable field does not have a value, not even a
+ * nominal ``value'' such as all-zero-bits. In many circumstances, OpenFlow
+ * and Open vSwitch allow references only to applicable fields. For example,
+ * one may match a given field only if the match includes the field's
+ * prerequisite, e.g. matching an ARP field is only allowed if one also matches
+ * on Ethertype 0x0806.
+ *
+ * (Practically, however, OVS represents a field's value as some fixed member
+ * in its "struct flow", so accessing that member will obtain some value. Some
+ * members are used for more than one purpose, e.g. the "tp_src" member
+ * represents the TCP, UDP, and SCTP source port, so the value read may not
+ * even make sense. For this reason, it is important to know whether a field's
+ * prerequisites are satisfied before attempting to read it.)
+ *
+ * Sometimes a packet may contain multiple instances of a header. For example,
+ * a packet may contain multiple VLAN or MPLS headers, and tunnels can cause
+ * any data field to recur. OpenFlow and Open vSwitch do not address these
+ * cases uniformly. For VLAN and MPLS headers, only the outermost header is
+ * accessible, so that inner headers may be accessed only by ``popping''
+ * (removing) the outer header. (Open vSwitch supports only a single VLAN
+ * header in any case.) For tunnels, e.g. GRE or VXLAN, the outer header and
+ * inner headers are treated as different data fields.
+ *
+ * OpenFlow and Open vSwitch support some fields other than data fields.
+ * "Metadata fields" relate to the origin or treatment of a packet, but they
+ * are not extracted from the packet data itself. One example is the physical
+ * port on which a packet arrived at the switch. "Register fields" act like
+ * variables: they give an OpenFlow switch space for temporary storage while
+ * processing a packet. Existing metadata and register fields have no
+ * prerequisites.
+ *
+ * A field's value consists of an integral number of bytes. Most data fields
+ * are copied directly from protocol headers, e.g. at layer 2, MFF_ETH_SRC is
+ * copied from the Ethernet source address and MFF_ETH_DST from the destination
+ * address. Other data fields are copied from a packet with padding, usually
+ * with zeros and in the most significant positions (see e.g. MFF_MPLS_LABEL)
+ * but not always (see e.g. MFF_IP_DSCP). A final category of data fields is
+ * transformed in other ways as they are copied from the packets, to make them
+ * more useful for matching, e.g. MFF_IP_FRAG describes whether a packet is a
+ * fragment but it is not copied directly from the IP header.
+ *
+ *
+ * Field specifications
+ * ====================
+ *
+ * Each of the enumeration values below represents a field. The comments
+ * preceding each enum must be in a stylized form that is parsed at compile
+ * time by the extract-ofp-fields program. The comment itself consists of a
+ * series of paragraphs separate by blank lines. The paragraphs consist of:
+ *
+ * - The first paragraph gives the user-visible name of the field as a
+ * quoted string. This is the name used for parsing and formatting the
+ * field.
+ *
+ * For historical reasons, some fields have an additional name that is
+ * accepted as an alternative in parsing. This name, when there is one,
+ * is given as a quoted string in parentheses along with "aka". For
+ * example:
+ *
+ * "tun_id" (aka "tunnel_id").
+ *
+ * New fields should have only one name.
+ *
+ * - Any number of paragraphs of free text that describe the field. This
+ * is meant for human readers, so extract-ofp-fields ignores it.
+ *
+ * - A final paragraph that consists of a series of key-value pairs, one
+ * per line, in the form "key: value." where the period at the end of the
+ * line is a mandatory part of the syntax.
+ *
+ * Every field must specify the following key-value pairs:
+ *
+ * Type:
+ *
+ * The format and size of the field's value. Some possible values are
+ * generic:
+ *
+ * u8: A one-byte field.
+ * be16: A two-byte field.
+ * be32: A four-byte field.
+ * be64: An eight-byte field.
+ *
+ * The remaining values imply more about the value's semantics, though OVS
+ * does not currently take advantage of this additional information:
+ *
+ * MAC: A six-byte field whose value is an Ethernet address.
+ * IPv6: A 16-byte field whose value is an IPv6 address.
+ *
+ * Maskable:
+ *
+ * Either "bitwise", if OVS supports matching any subset of bits in the
+ * field, or "no", if OVS only supports matching or wildcarding the entire
+ * field.
+ *
+ * Formatting:
+ *
+ * Explains how a field's value is formatted and parsed for human
+ * consumption. Some of the options are fairly generally useful:
+ *
+ * decimal: Formats the value as a decimal number. On parsing, accepts
+ * decimal (with no prefix), hexadecimal with 0x prefix, or octal
+ * with 0 prefix.
+ *
+ * hexadecimal: Same as decimal except nonzero values are formatted in
+ * hex with 0x prefix. The default for parsing is *not* hexadecimal:
+ * only with a 0x prefix is the input in hexadecimal.
+ *
+ * Ethernet: Formats and accepts the common format xx:xx:xx:xx:xx:xx.
+ * 6-byte fields only.
+ *
+ * IPv4: Formats and accepts the common format w.x.y.z. 4-byte fields
+ * only.
+ *
+ * IPv6: Formats and accepts the common IPv6 formats. 16-byte fields
+ * only.
+ *
+ * OpenFlow 1.0 port: Accepts an OpenFlow well-known port name
+ * (e.g. "IN_PORT") in uppercase or lowercase, or a 16-bit port
+ * number in decimal. Formats ports using their well-known names in
+ * uppercase, or in decimal otherwise. 2-byte fields only.
+ *
+ * OpenFlow 1.1+ port: Same syntax as for OpenFlow 1.0 ports but for
+ * 4-byte OpenFlow 1.1+ port number fields.
+ *
+ * Others are very specific to particular fields:
+ *
+ * frag: One of the strings "no", "first", "later", "yes", "not_later"
+ * describing which IPv4/v6 fragments are matched.
+ *
+ * tunnel flags: Any number of the strings "df", "csum", "key", or
+ * "oam" separated by "|".
+ *
+ * TCP flags: See the description of tcp_flags in ovs-ofctl(8).
+ *
+ * Prerequisites:
+ *
+ * The field's prerequisites. The values should be straightfoward.
+ *
+ * Access:
+ *
+ * Either "read-only", for a field that cannot be changed via OpenFlow, or
+ * "read/write" for a modifiable field.
+ *
+ * NXM:
+ *
+ * If the field has an NXM field assignment, then this specifies the NXM
+ * name of the field (e.g. "NXM_OF_ETH_SRC"), followed by its nxm_type in
+ * parentheses, followed by "since v<x>.<y>" specifying the version of Open
+ * vSwitch that first supported this field in NXM (e.g. "since v1.1" if it
+ * was introduced in Open vSwitch 1.1).
+ *
+ * The NXM name must begin with NXM_OF_ or NXM_NX_. This allows OVS to
+ * determine the correct NXM class.
+ *
+ * If the field does not have an NXM field assignment, specify "none".
+ *
+ * OXM:
+ *
+ * If the field has an OXM field assignment, then this specifies the OXM
+ * name of the field (e.g. "OXM_OF_ETH_SRC"), followed by its nxm_type in
+ * parentheses, followed by "since OF<a>.<b> v<x>.<y>" specifying the
+ * versions of OpenFlow and Open vSwitch that first supported this field in
+ * OXM (e.g. "since OF1.3 and v1.10" if it was introduced in OpenFlow 1.3
+ * and first supported by Open vSwitch in version 1.10).
+ *
+ * OVS uses the start of the OXM field name to determine the correct OXM
+ * class. To support a new OXM class, edit the mapping table in
+ * build-aux/extract-ofp-fields.
+ *
+ * If the field does not have an OXM field assignment, specify "none".
+ *
+ * The following key-value pairs are optional. Open vSwitch already supports
+ * all the fields to which they apply, so new fields should probably not
+ * include these pairs:
+ *
+ * OF1.0:
+ *
+ * Specify this as "exact match" if OpenFlow 1.0 can match or wildcard the
+ * entire field, or as "CIDR mask" if OpenFlow 1.0 can match any CIDR
+ * prefix of the field. (OpenFlow 1.0 did not support bitwise matching.)
+ * Omit, if OpenFlow 1.0 did not support this field.
+ *
+ * OF1.1:
+ *
+ * Specify this as "exact match" if OpenFlow 1.1 can match or wildcard the
+ * entire field, or as "bitwise" if OpenFlow 1.1 can match any subset of
+ * bits in the field. Omit, if OpenFlow 1.1 did not support this field.
+ *
+ * The following key-value pair is optional:
+ *
+ * Prefix lookup member:
+ *
+ * If this field makes sense for use with classifier_set_prefix_fields(),
+ * specify the name of the "struct flow" member that corresponds to the
+ * field.
+ *
+ * Finally, a few "register" fields have very similar names and purposes,
+ * e.g. MFF_REG0 through MFF_REG7. For these, the comments may be merged
+ * together using <N> as a metasyntactic variable for the numeric suffix.
+ * Lines in the comment that are specific to one of the particular fields by
+ * writing, e.g. <1>, to consider that line only for e.g. MFF_REG1.
+ */
+
enum OVS_PACKED_ENUM mf_field_id {
- /* Metadata. */
- MFF_DP_HASH, /* be32 */
- MFF_RECIRC_ID, /* be32 */
- MFF_TUN_ID, /* be64 */
- MFF_TUN_SRC, /* be32 */
- MFF_TUN_DST, /* be32 */
- MFF_TUN_FLAGS, /* be16 */
- MFF_TUN_TTL, /* u8 */
- MFF_TUN_TOS, /* u8 */
- MFF_METADATA, /* be64 */
- MFF_IN_PORT, /* be16 */
- MFF_IN_PORT_OXM, /* be32 */
- MFF_SKB_PRIORITY, /* be32 */
- MFF_PKT_MARK, /* be32 */
+/* ## -------- ## */
+/* ## Metadata ## */
+/* ## -------- ## */
+
+ /* "dp_hash".
+ *
+ * Flow hash computed in the datapath. Internal use only, not programmable
+ * from controller.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: NXM_NX_DP_HASH(35) since v2.2.
+ * OXM: none.
+ */
+ MFF_DP_HASH,
+
+ /* "recirc_id".
+ *
+ * ID for recirculation. The value 0 is reserved for initially received
+ * packets. Internal use only, not programmable from controller.
+ *
+ * Type: be32.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: NXM_NX_RECIRC_ID(36) since v2.2.
+ * OXM: none.
+ */
+ MFF_RECIRC_ID,
+
+ /* "tun_id" (aka "tunnel_id").
+ *
+ * The "key" or "tunnel ID" or "VNI" in a packet received via a keyed
+ * tunnel. For protocols in which the key is shorter than 64 bits, the key
+ * is stored in the low bits and the high bits are zeroed. For non-keyed
+ * tunnels and packets not received via a tunnel, the value is 0.
+ *
+ * Type: be64.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_NX_TUN_ID(16) since v1.1.
+ * OXM: OXM_OF_TUNNEL_ID(38) since OF1.3 and v1.10.
+ * Prefix lookup member: tunnel.tun_id.
+ */
+ MFF_TUN_ID,
+
+ /* "tun_src".
+ *
+ * The IPv4 source address in the outer IP header of a tunneled packet.
+ *
+ * For non-tunneled packets, the value is 0.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_NX_TUN_IPV4_SRC(31) since v2.0.
+ * OXM: none.
+ * Prefix lookup member: tunnel.ip_src.
+ */
+ MFF_TUN_SRC,
+
+ /* "tun_dst".
+ *
+ * The IPv4 destination address in the outer IP header of a tunneled
+ * packet.
+ *
+ * For non-tunneled packets, the value is 0.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_NX_TUN_IPV4_DST(32) since v2.0.
+ * OXM: none.
+ * Prefix lookup member: tunnel.ip_dst.
+ */
+ MFF_TUN_DST,
+
+ /* "tun_flags".
+ *
+ * Combination of FLOW_TNL_F_* bitmapped flags that indicate properties of
+ * a tunneled packet. Internal use only, not programmable from controller.
+ *
+ * For non-tunneled packets, the value is 0.
+ *
+ * Type: be16.
+ * Maskable: no.
+ * Formatting: tunnel flags.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: none.
+ * OXM: none.
+ */
+ MFF_TUN_FLAGS,
+
+ /* "tun_ttl".
+ *
+ * The TTL in the outer IP header of a tunneled packet. Internal use only,
+ * not programmable from controller.
+ *
+ * For non-tunneled packets, the value is 0.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: none.
+ * OXM: none.
+ */
+ MFF_TUN_TTL,
+
+ /* "tun_tos".
+ *
+ * The ToS value in the outer IP header of a tunneled packet. Internal use
+ * only, not programmable from controller.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: none.
+ * OXM: none.
+ */
+ MFF_TUN_TOS,
+
+ /* "metadata".
+ *
+ * A scratch pad value standardized in OpenFlow 1.1+. Initially zero, at
+ * the beginning of the pipeline.
+ *
+ * Type: be64.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_METADATA(2) since OF1.2 and v1.8.
+ * OF1.1: bitwise mask.
+ */
+ MFF_METADATA,
+
+ /* "in_port".
+ *
+ * 16-bit (OpenFlow 1.0) view of the physical or virtual port on which the
+ * packet was received.
+ *
+ * Type: be16.
+ * Maskable: no.
+ * Formatting: OpenFlow 1.0 port.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_OF_IN_PORT(0) since v1.1.
+ * OXM: none.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_IN_PORT,
+
+ /* "in_port_oxm".
+ *
+ * 32-bit (OpenFlow 1.1+) view of the physical or virtual port on which the
+ * packet was received.
+ *
+ * Type: be32.
+ * Maskable: no.
+ * Formatting: OpenFlow 1.1+ port.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_IN_PORT(0) since OF1.2 and v1.7.
+ * OF1.1: exact match.
+ */
+ MFF_IN_PORT_OXM,
+
+ /* "skb_priority".
+ *
+ * Designates the queue to which output will be directed. The value in
+ * this field is not necessarily the OpenFlow queue number; with the Linux
+ * kernel switch, it instead has a pair of subfields designating the
+ * "major" and "minor" numbers of a Linux kernel qdisc handle.
+ *
+ * This field is "semi-internal" in that it can be set with the "set_queue"
+ * action but not matched or read or written other ways.
+ *
+ * Type: be32.
+ * Maskable: no.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: none.
+ * OXM: none.
+ */
+ MFF_SKB_PRIORITY,
+
+ /* "pkt_mark".
+ *
+ * Packet metadata mark. The mark may be passed into other system
+ * components in order to facilitate interaction between subsystems. On
+ * Linux this corresponds to struct sk_buff's "skb_mark" member but the
+ * exact implementation is platform-dependent.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_NX_PKT_MARK(33) since v2.0.
+ * OXM: none.
+ */
+ MFF_PKT_MARK,
#if FLOW_N_REGS == 8
- MFF_REG0, /* be32 */
- MFF_REG1, /* be32 */
- MFF_REG2, /* be32 */
- MFF_REG3, /* be32 */
- MFF_REG4, /* be32 */
- MFF_REG5, /* be32 */
- MFF_REG6, /* be32 */
- MFF_REG7, /* be32 */
+ /* "reg<N>".
+ *
+ * Nicira extension scratch pad register with initial value 0.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_NX_REG0(0) since v1.1. <0>
+ * NXM: NXM_NX_REG1(1) since v1.1. <1>
+ * NXM: NXM_NX_REG2(2) since v1.1. <2>
+ * NXM: NXM_NX_REG3(3) since v1.1. <3>
+ * NXM: NXM_NX_REG4(4) since v1.3. <4>
+ * NXM: NXM_NX_REG5(5) since v1.7. <5>
+ * NXM: NXM_NX_REG6(6) since v1.7. <6>
+ * NXM: NXM_NX_REG7(7) since v1.7. <7>
+ * OXM: none.
+ */
+ MFF_REG0,
+ MFF_REG1,
+ MFF_REG2,
+ MFF_REG3,
+ MFF_REG4,
+ MFF_REG5,
+ MFF_REG6,
+ MFF_REG7,
#else
#error "Need to update MFF_REG* to match FLOW_N_REGS"
#endif
#if FLOW_N_XREGS == 4
- MFF_XREG0, /* be64 */
- MFF_XREG1, /* be64 */
- MFF_XREG2, /* be64 */
- MFF_XREG3, /* be64 */
+ /* "xreg<N>".
+ *
+ * OpenFlow 1.5 (draft) ``extended register". Each extended register
+ * overlays two of the Nicira extension 32-bit registers: xreg0 overlays
+ * reg0 and reg1, with reg0 supplying the most-significant bits of xreg0
+ * and reg1 the least-significant. xreg1 similarly overlays reg2 and reg3,
+ * and so on.
+ *
+ * Type: be64.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_PKT_REG<N>(<N>) since OF1.5 and v2.4.
+ */
+ MFF_XREG0,
+ MFF_XREG1,
+ MFF_XREG2,
+ MFF_XREG3,
#else
#error "Need to update MFF_REG* to match FLOW_N_XREGS"
#endif
- /* L2. */
- MFF_ETH_SRC, /* mac */
- MFF_ETH_DST, /* mac */
- MFF_ETH_TYPE, /* be16 */
-
- MFF_VLAN_TCI, /* be16 */
- MFF_DL_VLAN, /* be16 (OpenFlow 1.0 compatibility) */
- MFF_VLAN_VID, /* be16 (OpenFlow 1.2 compatibility) */
- MFF_DL_VLAN_PCP, /* u8 (OpenFlow 1.0 compatibility) */
- MFF_VLAN_PCP, /* be16 (OpenFlow 1.2 compatibility) */
-
- /* L2.5 */
- MFF_MPLS_LABEL, /* be32 */
- MFF_MPLS_TC, /* u8 */
- MFF_MPLS_BOS, /* u8 */
-
- /* L3. */
- /* Update mf_is_l3_or_higher() if MFF_IPV4_SRC is
- * no longer the first element for a field of layer 3 or higher */
- MFF_IPV4_SRC, /* be32 */
- MFF_IPV4_DST, /* be32 */
-
- MFF_IPV6_SRC, /* ipv6 */
- MFF_IPV6_DST, /* ipv6 */
- MFF_IPV6_LABEL, /* be32 */
-
- /* The IPv4/IPv6 DSCP field has two different views:
- *
- * - MFF_IP_DSCP has the DSCP in bits 2-7, their bit positions in the
- * IPv4 and IPv6 "traffic class" field, as used in OpenFlow 1.0 and 1.1
- * flow format and in NXM's NXM_OF_IP_TOS
- *
- * - MFF_IP_DSCP has the DSCP in bits 0-5, shifted right two bits from
- * their positions in the IPv4 and IPv6 "traffic class" field, as used
- * in OpenFlow 1.2+ OXM's OXM_OF_IP_DSCP. */
- MFF_IP_PROTO, /* u8 (used for IPv4 or IPv6) */
- MFF_IP_DSCP, /* u8 (used for IPv4 or IPv6) */
- MFF_IP_DSCP_SHIFTED, /* u8 (used for IPv4 or IPv6) (OF1.2 compat) */
- MFF_IP_ECN, /* u8 (used for IPv4 or IPv6) */
- MFF_IP_TTL, /* u8 (used for IPv4 or IPv6) */
- MFF_IP_FRAG, /* u8 (used for IPv4 or IPv6) */
-
- MFF_ARP_OP, /* be16 */
- MFF_ARP_SPA, /* be32 */
- MFF_ARP_TPA, /* be32 */
- MFF_ARP_SHA, /* mac */
- MFF_ARP_THA, /* mac */
-
- /* L4. */
- MFF_TCP_SRC, /* be16 (used for IPv4 or IPv6) */
- MFF_TCP_DST, /* be16 (used for IPv4 or IPv6) */
- MFF_TCP_FLAGS, /* be16, 12 bits (4 MSB zeroed,
- * used for IPv4 or IPv6) */
-
- MFF_UDP_SRC, /* be16 (used for IPv4 or IPv6) */
- MFF_UDP_DST, /* be16 (used for IPv4 or IPv6) */
-
- MFF_SCTP_SRC, /* be16 (used for IPv4 or IPv6) */
- MFF_SCTP_DST, /* be16 (used for IPv4 or IPv6) */
-
- MFF_ICMPV4_TYPE, /* u8 */
- MFF_ICMPV4_CODE, /* u8 */
-
- MFF_ICMPV6_TYPE, /* u8 */
- MFF_ICMPV6_CODE, /* u8 */
-
- /* ICMPv6 Neighbor Discovery. */
- MFF_ND_TARGET, /* ipv6 */
- MFF_ND_SLL, /* mac */
- MFF_ND_TLL, /* mac */
+/* ## -------- ## */
+/* ## Ethernet ## */
+/* ## -------- ## */
+
+ /* "eth_src" (aka "dl_src").
+ *
+ * Source address in Ethernet header.
+ *
+ * This field was not maskable before Open vSwitch 1.8.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_OF_ETH_SRC(2) since v1.1.
+ * OXM: OXM_OF_ETH_SRC(4) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: bitwise mask.
+ */
+ MFF_ETH_SRC,
+
+ /* "eth_dst" (aka "dl_dst").
+ *
+ * Destination address in Ethernet header.
+ *
+ * Before Open vSwitch 1.8, the allowed masks were restricted to
+ * 00:00:00:00:00:00, fe:ff:ff:ff:ff:ff, 01:00:00:00:00:00,
+ * ff:ff:ff:ff:ff:ff.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_OF_ETH_DST(1) since v1.1.
+ * OXM: OXM_OF_ETH_DST(3) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: bitwise mask.
+ */
+ MFF_ETH_DST,
+
+ /* "eth_type" (aka "dl_type").
+ *
+ * Packet's Ethernet type.
+ *
+ * For an Ethernet II packet this is taken from the Ethernet header. For
+ * an 802.2 LLC+SNAP header with OUI 00-00-00 this is taken from the SNAP
+ * header. A packet that has neither format has value 0x05ff
+ * (OFP_DL_TYPE_NOT_ETH_TYPE).
+ *
+ * For a packet with an 802.1Q header, this is the type of the encapsulated
+ * frame.
+ *
+ * Type: be16.
+ * Maskable: no.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read-only.
+ * NXM: NXM_OF_ETH_TYPE(3) since v1.1.
+ * OXM: OXM_OF_ETH_TYPE(5) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_ETH_TYPE,
+
+/* ## ---- ## */
+/* ## VLAN ## */
+/* ## ---- ## */
+
+/* It looks odd for vlan_tci, vlan_vid, and vlan_pcp to say that they are
+ * supported in OF1.0 and OF1.1, since the detailed semantics of these fields
+ * only apply to NXM or OXM. They are marked as supported for exact matches in
+ * OF1.0 and OF1.1 because exact matches on those fields can be successfully
+ * translated into the OF1.0 and OF1.1 flow formats. */
+
+ /* "vlan_tci".
+ *
+ * 802.1Q TCI.
+ *
+ * For a packet with an 802.1Q header, this is the Tag Control Information
+ * (TCI) field, with the CFI bit forced to 1. For a packet with no 802.1Q
+ * header, this has value 0.
+ *
+ * This field can be used in various ways:
+ *
+ * - If it is not constrained at all, the nx_match matches packets
+ * without an 802.1Q header or with an 802.1Q header that has any TCI
+ * value.
+ *
+ * - Testing for an exact match with 0 matches only packets without an
+ * 802.1Q header.
+ *
+ * - Testing for an exact match with a TCI value with CFI=1 matches
+ * packets that have an 802.1Q header with a specified VID and PCP.
+ *
+ * - Testing for an exact match with a nonzero TCI value with CFI=0 does
+ * not make sense. The switch may reject this combination.
+ *
+ * - Testing with a specific VID and CFI=1, with nxm_mask=0x1fff, matches
+ * packets that have an 802.1Q header with that VID (and any PCP).
+ *
+ * - Testing with a specific PCP and CFI=1, with nxm_mask=0xf000, matches
+ * packets that have an 802.1Q header with that PCP (and any VID).
+ *
+ * - Testing with nxm_value=0, nxm_mask=0x0fff matches packets with no
+ * 802.1Q header or with an 802.1Q header with a VID of 0.
+ *
+ * - Testing with nxm_value=0, nxm_mask=0xe000 matches packets with no
+ * 802.1Q header or with an 802.1Q header with a PCP of 0.
+ *
+ * - Testing with nxm_value=0, nxm_mask=0xefff matches packets with no
+ * 802.1Q header or with an 802.1Q header with both VID and PCP of 0.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: NXM_OF_VLAN_TCI(4) since v1.1.
+ * OXM: none.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_VLAN_TCI,
+
+ /* "dl_vlan" (OpenFlow 1.0).
+ *
+ * VLAN ID field. Zero if no 802.1Q header is present.
+ *
+ * Type: be16 (low 12 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: none.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_DL_VLAN,
+
+ /* "vlan_vid" (OpenFlow 1.2+).
+ *
+ * If an 802.1Q header is present, this field's value is 0x1000
+ * bitwise-or'd with the VLAN ID. If no 802.1Q is present, this field's
+ * value is 0.
+ *
+ * Type: be16 (low 12 bits).
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_VLAN_VID(6) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_VLAN_VID,
+
+ /* "dl_vlan_pcp" (OpenFlow 1.0).
+ *
+ * VLAN priority (PCP) field. Zero if no 802.1Q header is present.
+ *
+ * Type: u8 (low 3 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: none.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: none.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_DL_VLAN_PCP,
+
+ /* "vlan_pcp" (OpenFlow 1.2+).
+ *
+ * VLAN priority (PCP) field. Zero if no 802.1Q header is present.
+ *
+ * Type: u8 (low 3 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: VLAN VID.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_VLAN_PCP(7) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_VLAN_PCP,
+
+/* ## ---- ## */
+/* ## MPLS ## */
+/* ## ---- ## */
+
+ /* "mpls_label".
+ *
+ * The outermost MPLS label, or 0 if no MPLS labels are present.
+ *
+ * Type: be32 (low 20 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: MPLS.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_MPLS_LABEL(34) since OF1.2 and v1.11.
+ * OF1.1: exact match.
+ */
+ MFF_MPLS_LABEL,
+
+ /* "mpls_tc".
+ *
+ * The outermost MPLS label's traffic control (TC) field, or 0 if no MPLS
+ * labels are present.
+ *
+ * Type: u8 (low 3 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: MPLS.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_MPLS_TC(35) since OF1.2 and v1.11.
+ * OF1.1: exact match.
+ */
+ MFF_MPLS_TC,
+
+ /* "mpls_bos".
+ *
+ * The outermost MPLS label's bottom of stack (BoS) field, or 0 if no MPLS
+ * labels are present.
+ *
+ * Type: u8 (low 1 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: MPLS.
+ * Access: read-only.
+ * NXM: none.
+ * OXM: OXM_OF_MPLS_BOS(36) since OF1.3 and v1.11.
+ */
+ MFF_MPLS_BOS,
+
+/* ## ---- ## */
+/* ## IPv4 ## */
+/* ## ---- ## */
+
+/* Update mf_is_l3_or_higher() if MFF_IPV4_SRC is no longer the first element
+ * for a field of layer 3 or higher */
+
+ /* "ip_src" (aka "nw_src").
+ *
+ * The source address in the IPv4 header.
+ *
+ * Before Open vSwitch 1.8, only CIDR masks were supported.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: IPv4.
+ * Access: read/write.
+ * NXM: NXM_OF_IP_SRC(7) since v1.1.
+ * OXM: OXM_OF_IPV4_SRC(11) since OF1.2 and v1.7.
+ * OF1.0: CIDR mask.
+ * OF1.1: bitwise mask.
+ * Prefix lookup member: nw_src.
+ */
+ MFF_IPV4_SRC,
+
+ /* "ip_dst" (aka "nw_dst").
+ *
+ * The destination address in the IPv4 header.
+ *
+ * Before Open vSwitch 1.8, only CIDR masks were supported.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: IPv4.
+ * Access: read/write.
+ * NXM: NXM_OF_IP_DST(8) since v1.1.
+ * OXM: OXM_OF_IPV4_DST(12) since OF1.2 and v1.7.
+ * OF1.0: CIDR mask.
+ * OF1.1: bitwise mask.
+ * Prefix lookup member: nw_dst.
+ */
+ MFF_IPV4_DST,
+
+/* ## ---- ## */
+/* ## IPv6 ## */
+/* ## ---- ## */
+
+ /* "ipv6_src".
+ *
+ * The source address in the IPv6 header.
+ *
+ * Type: IPv6.
+ * Maskable: bitwise.
+ * Formatting: IPv6.
+ * Prerequisites: IPv6.
+ * Access: read/write.
+ * NXM: NXM_NX_IPV6_SRC(19) since v1.1.
+ * OXM: OXM_OF_IPV6_SRC(26) since OF1.2 and v1.1.
+ * Prefix lookup member: ipv6_src.
+ */
+ MFF_IPV6_SRC,
+
+ /* "ipv6_dst".
+ *
+ * The destination address in the IPv6 header.
+ *
+ * Type: IPv6.
+ * Maskable: bitwise.
+ * Formatting: IPv6.
+ * Prerequisites: IPv6.
+ * Access: read/write.
+ * NXM: NXM_NX_IPV6_DST(20) since v1.1.
+ * OXM: OXM_OF_IPV6_DST(27) since OF1.2 and v1.1.
+ * Prefix lookup member: ipv6_dst.
+ */
+ MFF_IPV6_DST,
+
+ /* "ipv6_label".
+ *
+ * The flow label in the IPv6 header.
+ *
+ * Type: be32 (low 20 bits).
+ * Maskable: bitwise.
+ * Formatting: hexadecimal.
+ * Prerequisites: IPv6.
+ * Access: read-only.
+ * NXM: NXM_NX_IPV6_LABEL(27) since v1.4.
+ * OXM: OXM_OF_IPV6_FLABEL(28) since OF1.2 and v1.7.
+ */
+ MFF_IPV6_LABEL,
+
+/* ## ----------------------- ## */
+/* ## IPv4/IPv6 common fields ## */
+/* ## ----------------------- ## */
+
+ /* "nw_proto" (aka "ip_proto").
+ *
+ * The "protocol" byte in the IPv4 or IPv6 header.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read-only.
+ * NXM: NXM_OF_IP_PROTO(6) since v1.1.
+ * OXM: OXM_OF_IP_PROTO(10) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_IP_PROTO,
+
+/* Both views of the DSCP below are marked as supported in all of the versions
+ * of OpenFlow because a match on either view can be successfully translated
+ * into every OpenFlow flow format. */
+
+ /* "nw_tos" (OpenFlow 1.0/1.1).
+ *
+ * The DSCP byte in the IPv4 header or the traffic class byte from the IPv6
+ * header, with the ECN bits forced to 0. (That is, bits 2-7 contain the
+ * type of service and bits 0-1 are zero.)
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read/write.
+ * NXM: NXM_OF_IP_TOS(5) since v1.1.
+ * OXM: none.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_IP_DSCP,
+
+ /* "ip_dscp" (OpenFlow 1.2+).
+ *
+ * The DSCP byte in the IPv4 header or the traffic class byte from the IPv6
+ * header, shifted right 2 bits. (That is, bits 0-5 contain the type of
+ * service and bits 6-7 are zero.)
+ *
+ * Type: u8 (low 6 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_IP_DSCP(8) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_IP_DSCP_SHIFTED,
+
+ /* "nw_ecn" (aka "ip_ecn").
+ *
+ * The ECN bits in the IPv4 or IPv6 header.
+ *
+ * Type: u8 (low 2 bits).
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read/write.
+ * NXM: NXM_NX_IP_ECN(28) since v1.4.
+ * OXM: OXM_OF_IP_ECN(9) since OF1.2 and v1.7.
+ */
+ MFF_IP_ECN,
+
+ /* "nw_ttl".
+ *
+ * The time-to-live (TTL) in the IPv4 header or hop limit in the IPv6
+ * header.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read/write.
+ * NXM: NXM_NX_IP_TTL(29) since v1.4.
+ * OXM: none.
+ */
+ MFF_IP_TTL,
+
+ /* "ip_frag".
+ *
+ * IP fragment information.
+ *
+ * This field has three possible values:
+ *
+ * - A packet that is not an IP fragment has value 0.
+ *
+ * - A packet that is an IP fragment with offset 0 (the first fragment)
+ * has bit 0 set and thus value 1.
+ *
+ * - A packet that is an IP fragment with nonzero offset has bits 0 and 1
+ * set and thus value 3.
+ *
+ * NX_IP_FRAG_ANY and NX_IP_FRAG_LATER are declared to symbolically
+ * represent the meanings of bits 0 and 1.
+ *
+ * The switch may reject matches against values that can never appear.
+ *
+ * It is important to understand how this field interacts with the OpenFlow
+ * IP fragment handling mode:
+ *
+ * - In OFPC_FRAG_DROP mode, the OpenFlow switch drops all IP fragments
+ * before they reach the flow table, so every packet that is available
+ * for matching will have value 0 in this field.
+ *
+ * - Open vSwitch does not implement OFPC_FRAG_REASM mode, but if it did
+ * then IP fragments would be reassembled before they reached the flow
+ * table and again every packet available for matching would always
+ * have value 0.
+ *
+ * - In OFPC_FRAG_NORMAL mode, all three values are possible, but
+ * OpenFlow 1.0 says that fragments' transport ports are always 0, even
+ * for the first fragment, so this does not provide much extra
+ * information.
+ *
+ * - In OFPC_FRAG_NX_MATCH mode, all three values are possible. For
+ * fragments with offset 0, Open vSwitch makes L4 header information
+ * available.
+ *
+ * Type: u8 (low 2 bits).
+ * Maskable: bitwise.
+ * Formatting: frag.
+ * Prerequisites: IPv4/IPv6.
+ * Access: read-only.
+ * NXM: NXM_NX_IP_FRAG(26) since v1.3.
+ * OXM: none.
+ */
+ MFF_IP_FRAG,
+
+/* ## --- ## */
+/* ## ARP ## */
+/* ## --- ## */
+
+ /* "arp_op".
+ *
+ * ARP opcode.
+ *
+ * For an Ethernet+IP ARP packet, the opcode in the ARP header. Always 0
+ * otherwise. Only ARP opcodes between 1 and 255 should be specified for
+ * matching.
+ *
+ * Type: be16.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: ARP.
+ * Access: read/write.
+ * NXM: NXM_OF_ARP_OP(15) since v1.1.
+ * OXM: OXM_OF_ARP_OP(21) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_ARP_OP,
+
+ /* "arp_spa".
+ *
+ * For an Ethernet+IP ARP packet, the source protocol (IPv4) address in the
+ * ARP header. Always 0 otherwise.
+ *
+ * Before Open vSwitch 1.8, only CIDR masks were supported.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: ARP.
+ * Access: read/write.
+ * NXM: NXM_OF_ARP_SPA(16) since v1.1.
+ * OXM: OXM_OF_ARP_SPA(22) since OF1.2 and v1.7.
+ * OF1.0: CIDR mask.
+ * OF1.1: bitwise mask.
+ */
+ MFF_ARP_SPA,
+
+ /* "arp_tpa".
+ *
+ * For an Ethernet+IP ARP packet, the target protocol (IPv4) address in the
+ * ARP header. Always 0 otherwise.
+ *
+ * Before Open vSwitch 1.8, only CIDR masks were supported.
+ *
+ * Type: be32.
+ * Maskable: bitwise.
+ * Formatting: IPv4.
+ * Prerequisites: ARP.
+ * Access: read/write.
+ * NXM: NXM_OF_ARP_TPA(17) since v1.1.
+ * OXM: OXM_OF_ARP_TPA(23) since OF1.2 and v1.7.
+ * OF1.0: CIDR mask.
+ * OF1.1: bitwise mask.
+ */
+ MFF_ARP_TPA,
+
+ /* "arp_sha".
+ *
+ * For an Ethernet+IP ARP packet, the source hardware (Ethernet) address in
+ * the ARP header. Always 0 otherwise.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: ARP.
+ * Access: read/write.
+ * NXM: NXM_NX_ARP_SHA(17) since v1.1.
+ * OXM: OXM_OF_ARP_SHA(24) since OF1.2 and v1.7.
+ */
+ MFF_ARP_SHA,
+
+ /* "arp_tha".
+ *
+ * For an Ethernet+IP ARP packet, the target hardware (Ethernet) address in
+ * the ARP header. Always 0 otherwise.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: ARP.
+ * Access: read/write.
+ * NXM: NXM_NX_ARP_THA(18) since v1.1.
+ * OXM: OXM_OF_ARP_THA(25) since OF1.2 and v1.7.
+ */
+ MFF_ARP_THA,
+
+/* ## --- ## */
+/* ## TCP ## */
+/* ## --- ## */
+
+ /* "tcp_src" (aka "tp_src").
+ *
+ * TCP source port.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: TCP.
+ * Access: read/write.
+ * NXM: NXM_OF_TCP_SRC(9) since v1.1.
+ * OXM: OXM_OF_TCP_SRC(13) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_TCP_SRC,
+
+ /* "tcp_dst" (aka "tp_dst").
+ *
+ * TCP destination port.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: TCP.
+ * Access: read/write.
+ * NXM: NXM_OF_TCP_DST(10) since v1.1.
+ * OXM: OXM_OF_TCP_DST(14) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_TCP_DST,
+
+ /* "tcp_flags".
+ *
+ * Flags in the TCP header.
+ *
+ * TCP currently defines 9 flag bits, and additional 3 bits are reserved
+ * (must be transmitted as zero). See RFCs 793, 3168, and 3540.
+ *
+ * Type: be16 (low 12 bits).
+ * Maskable: bitwise.
+ * Formatting: TCP flags.
+ * Prerequisites: TCP.
+ * Access: read-only.
+ * NXM: NXM_NX_TCP_FLAGS(34) since v2.1.
+ * OXM: OXM_OF_TCP_FLAGS(42) since OF1.5 and v2.3.
+ */
+ MFF_TCP_FLAGS,
+
+/* ## --- ## */
+/* ## UDP ## */
+/* ## --- ## */
+
+ /* "udp_src".
+ *
+ * UDP source port.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: UDP.
+ * Access: read/write.
+ * NXM: NXM_OF_UDP_SRC(11) since v1.1.
+ * OXM: OXM_OF_UDP_SRC(15) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_UDP_SRC,
+
+ /* "udp_dst".
+ *
+ * UDP destination port
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: UDP.
+ * Access: read/write.
+ * NXM: NXM_OF_UDP_DST(12) since v1.1.
+ * OXM: OXM_OF_UDP_DST(16) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_UDP_DST,
+
+/* ## ---- ## */
+/* ## SCTP ## */
+/* ## ---- ## */
+
+ /* "sctp_src".
+ *
+ * SCTP source port.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: SCTP.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_SCTP_SRC(17) since OF1.2 and v2.0.
+ * OF1.1: exact match.
+ */
+ MFF_SCTP_SRC,
+
+ /* "sctp_dst".
+ *
+ * SCTP destination port.
+ *
+ * Type: be16.
+ * Maskable: bitwise.
+ * Formatting: decimal.
+ * Prerequisites: SCTP.
+ * Access: read/write.
+ * NXM: none.
+ * OXM: OXM_OF_SCTP_DST(18) since OF1.2 and v2.0.
+ * OF1.1: exact match.
+ */
+ MFF_SCTP_DST,
+
+/* ## ---- ## */
+/* ## ICMP ## */
+/* ## ---- ## */
+
+ /* "icmp_type".
+ *
+ * ICMPv4 type.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: ICMPv4.
+ * Access: read-only.
+ * NXM: NXM_OF_ICMP_TYPE(13) since v1.1.
+ * OXM: OXM_OF_ICMPV4_TYPE(19) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_ICMPV4_TYPE,
+
+ /* "icmp_code".
+ *
+ * ICMPv4 code.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: ICMPv4.
+ * Access: read-only.
+ * NXM: NXM_OF_ICMP_CODE(14) since v1.1.
+ * OXM: OXM_OF_ICMPV4_CODE(20) since OF1.2 and v1.7.
+ * OF1.0: exact match.
+ * OF1.1: exact match.
+ */
+ MFF_ICMPV4_CODE,
+
+ /* "icmpv6_type".
+ *
+ * ICMPv6 type.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: ICMPv6.
+ * Access: read-only.
+ * NXM: NXM_NX_ICMPV6_TYPE(21) since v1.1.
+ * OXM: OXM_OF_ICMPV6_TYPE(29) since OF1.2 and v1.7.
+ */
+ MFF_ICMPV6_TYPE,
+
+ /* "icmpv6_code".
+ *
+ * ICMPv6 code.
+ *
+ * Type: u8.
+ * Maskable: no.
+ * Formatting: decimal.
+ * Prerequisites: ICMPv6.
+ * Access: read-only.
+ * NXM: NXM_NX_ICMPV6_CODE(22) since v1.1.
+ * OXM: OXM_OF_ICMPV6_CODE(30) since OF1.2 and v1.7.
+ */
+ MFF_ICMPV6_CODE,
+
+/* ## ------------------------- ## */
+/* ## ICMPv6 Neighbor Discovery ## */
+/* ## ------------------------- ## */
+
+ /* "nd_target".
+ *
+ * The target address in an IPv6 Neighbor Discovery message.
+ *
+ * Before Open vSwitch 1.8, only CIDR masks were supported.
+ *
+ * Type: IPv6.
+ * Maskable: bitwise.
+ * Formatting: IPv6.
+ * Prerequisites: ND.
+ * Access: read-only.
+ * NXM: NXM_NX_ND_TARGET(23) since v1.1.
+ * OXM: OXM_OF_IPV6_ND_TARGET(31) since OF1.2 and v1.7.
+ */
+ MFF_ND_TARGET,
+
+ /* "nd_sll".
+ *
+ * The source link layer address in an IPv6 Neighbor Discovery message.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: ND solicit.
+ * Access: read-only.
+ * NXM: NXM_NX_ND_SLL(24) since v1.1.
+ * OXM: OXM_OF_IPV6_ND_SLL(32) since OF1.2 and v1.7.
+ */
+ MFF_ND_SLL,
+
+ /* "nd_tll".
+ *
+ * The target link layer address in an IPv6 Neighbor Discovery message.
+ *
+ * Type: MAC.
+ * Maskable: bitwise.
+ * Formatting: Ethernet.
+ * Prerequisites: ND advert.
+ * Access: read-only.
+ * NXM: NXM_NX_ND_TLL(25) since v1.1.
+ * OXM: OXM_OF_IPV6_ND_TLL(33) since OF1.2 and v1.7.
+ */
+ MFF_ND_TLL,
MFF_N_IDS
};
MFS_ETHERNET,
MFS_IPV4,
MFS_IPV6,
- MFS_OFP_PORT, /* An OpenFlow port number or name. */
- MFS_OFP_PORT_OXM, /* An OpenFlow port number or name (32-bit). */
+ MFS_OFP_PORT, /* 16-bit OpenFlow 1.0 port number or name. */
+ MFS_OFP_PORT_OXM, /* 32-bit OpenFlow 1.1+ port number or name. */
MFS_FRAG, /* no, yes, first, later, not_later */
MFS_TNL_FLAGS, /* FLOW_TNL_F_* flags */
MFS_TCP_FLAGS, /* TCP_* flags */
* These are combinations of OFPUTIL_P_*. (They are not declared as type
* enum ofputil_protocol because that would give meta-flow.h and ofp-util.h
* a circular dependency.) */
- uint32_t usable_protocols; /* If fully/CIDR masked. */
- uint32_t usable_protocols_bitwise; /* If partially/non-CIDR masked. */
+ uint32_t usable_protocols_exact; /* Matching or setting whole field. */
+ uint32_t usable_protocols_cidr; /* Matching a CIDR mask in field. */
+ uint32_t usable_protocols_bitwise; /* Matching arbitrary bits in field. */
int flow_be32ofs; /* Field's be32 offset in "struct flow", if prefix tree
* lookup is supported for the field, or -1. */
projects / cascardo / ovs.git / blobdiff