X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fopenflow%2Fopenflow-common.h;h=5018f8500142924138905dba341099612ee7fcb0;hb=3442636d01d2a73a557952ad9140de07418c28c2;hp=9788af100a2561706d79b51fbc896b669361ec62;hpb=254f4f3bd8c070dae5c42459db477bde35548e5d;p=sliver-openvswitch.git diff --git a/include/openflow/openflow-common.h b/include/openflow/openflow-common.h index 9788af100..5018f8500 100644 --- a/include/openflow/openflow-common.h +++ b/include/openflow/openflow-common.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2008, 2011 The Board of Trustees of The Leland Stanford +/* Copyright (c) 2008, 2011, 2012, 2013 The Board of Trustees of The Leland Stanford * Junior University * * We are making the OpenFlow specification and associated documentation @@ -71,9 +71,35 @@ /* The most significant bit being set in the version field indicates an * experimental OpenFlow version. */ -#define OFP10_VERSION 0x01 -#define OFP11_VERSION 0x02 -#define OFP12_VERSION 0x03 +enum ofp_version { + OFP10_VERSION = 0x01, + OFP11_VERSION = 0x02, + OFP12_VERSION = 0x03, + OFP13_VERSION = 0x04 +}; + +/* Vendor (aka experimenter) IDs. + * + * These are used in various places in OpenFlow to identify an extension + * defined by some vendor, as opposed to a standardized part of the core + * OpenFlow protocol. + * + * Vendor IDs whose top 8 bits are 0 hold an Ethernet OUI in their low 24 bits. + * The Open Networking Foundation assigns vendor IDs whose top 8 bits are + * nonzero. + * + * A few vendor IDs are special: + * + * - OF_VENDOR_ID is not a real vendor ID and does not appear in the + * OpenFlow protocol itself. It can occasionally be useful within Open + * vSwitch to identify a standardized part of OpenFlow. + * + * - ONF_VENDOR_ID is being used within the ONF "extensibility" working + * group to identify extensions being proposed for standardization. + */ +#define OF_VENDOR_ID 0 +#define NX_VENDOR_ID 0x00002320 /* Nicira. */ +#define ONF_VENDOR_ID 0x4f4e4600 /* Open Networking Foundation. */ #define OFP_MAX_TABLE_NAME_LEN 32 #define OFP_MAX_PORT_NAME_LEN 16 @@ -83,31 +109,26 @@ #define OFP_ETH_ALEN 6 /* Bytes in an Ethernet address. */ -/* Common OpenFlow message types. */ -enum ofp_type { - /* Immutable messages. */ - OFPT_HELLO, /* Symmetric message */ - OFPT_ERROR, /* Symmetric message */ - OFPT_ECHO_REQUEST, /* Symmetric message */ - OFPT_ECHO_REPLY, /* Symmetric message */ - OFPT_VENDOR, /* Symmetric message */ +#define OFP_DEFAULT_MISS_SEND_LEN 128 + +/* Values below this cutoff are 802.3 packets and the two bytes + * following MAC addresses are used as a frame length. Otherwise, the + * two bytes are used as the Ethernet type. + */ +#define OFP_DL_TYPE_ETH2_CUTOFF 0x0600 + +/* Value of dl_type to indicate that the frame does not include an + * Ethernet type. + */ +#define OFP_DL_TYPE_NOT_ETH_TYPE 0x05ff - /* Switch configuration messages. */ - OFPT_FEATURES_REQUEST, /* Controller/switch message */ - OFPT_FEATURES_REPLY, /* Controller/switch message */ - OFPT_GET_CONFIG_REQUEST, /* Controller/switch message */ - OFPT_GET_CONFIG_REPLY, /* Controller/switch message */ - OFPT_SET_CONFIG, /* Controller/switch message */ +/* Value used in "idle_timeout" and "hard_timeout" to indicate that the entry + * is permanent. */ +#define OFP_FLOW_PERMANENT 0 - /* Asynchronous messages. */ - OFPT_PACKET_IN, /* Async message */ - OFPT_FLOW_REMOVED, /* Async message */ - OFPT_PORT_STATUS, /* Async message */ +/* By default, choose a priority in the middle. */ +#define OFP_DEFAULT_PRIORITY 0x8000 - /* Controller command messages. */ - OFPT_PACKET_OUT, /* Controller/switch message */ - OFPT_FLOW_MOD, /* Controller/switch message */ -}; /* Header on all OpenFlow packets. */ struct ofp_header { @@ -120,6 +141,39 @@ struct ofp_header { }; OFP_ASSERT(sizeof(struct ofp_header) == 8); +/* OFPT_ERROR: Error message (datapath -> controller). */ +struct ofp_error_msg { + ovs_be16 type; + ovs_be16 code; + uint8_t data[0]; /* Variable-length data. Interpreted based + on the type and code. */ +}; +OFP_ASSERT(sizeof(struct ofp_error_msg) == 4); + +enum ofp_config_flags { + /* Handling of IP fragments. */ + OFPC_FRAG_NORMAL = 0, /* No special handling for fragments. */ + OFPC_FRAG_DROP = 1, /* Drop fragments. */ + OFPC_FRAG_REASM = 2, /* Reassemble (only if OFPC_IP_REASM set). */ + OFPC_FRAG_NX_MATCH = 3, /* Make first fragments available for matching. */ + OFPC_FRAG_MASK = 3, + + /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OpenFlow 1.3 */ + + /* TTL processing - applicable for IP and MPLS packets. */ + OFPC_INVALID_TTL_TO_CONTROLLER = 1 << 2, /* Send packets with invalid TTL + to the controller. */ +}; + +/* Switch configuration. */ +struct ofp_switch_config { + ovs_be16 flags; /* OFPC_* flags. */ + ovs_be16 miss_send_len; /* Max bytes of new flow that datapath should + send to the controller. */ +}; +OFP_ASSERT(sizeof(struct ofp_switch_config) == 4); + + /* Common flags to indicate behavior of the physical port. These flags are * used in ofp_port to describe the current configuration. They are used in * the ofp_port_mod message to configure the port's behavior. @@ -183,7 +237,6 @@ OFP_ASSERT(sizeof(struct ofp_queue_prop_min_rate) == 16); /* Switch features. */ struct ofp_switch_features { - struct ofp_header header; ovs_be64 datapath_id; /* Datapath unique ID. The lower 48-bits are for a MAC address, while the upper 16-bits are implementer-defined. */ @@ -191,16 +244,19 @@ struct ofp_switch_features { ovs_be32 n_buffers; /* Max packets buffered at once. */ uint8_t n_tables; /* Number of tables supported by datapath. */ - uint8_t pad[3]; /* Align to 64-bits. */ + uint8_t auxiliary_id; /* OF 1.3: Identify auxiliary connections */ + uint8_t pad[2]; /* Align to 64-bits. */ /* Features. */ ovs_be32 capabilities; /* OFPC_*, OFPC10_*, OFPC11_*, OFPC12_*. */ - ovs_be32 actions; /* Bitmap of supported "ofp_action_type"s. */ + ovs_be32 actions; /* Bitmap of supported "ofp_action_type"s. + * DEPRECATED in OpenFlow 1.1 */ /* Followed by an array of struct ofp10_phy_port or struct ofp11_port - * structures. The number is inferred from header.length. */ + * structures. The number is inferred from header.length. + * REMOVED in OpenFlow 1.3 */ }; -OFP_ASSERT(sizeof(struct ofp_switch_features) == 32); +OFP_ASSERT(sizeof(struct ofp_switch_features) == 24); /* Common capabilities supported by the datapath (struct ofp_switch_features, * member capabilities). */ @@ -222,12 +278,104 @@ enum ofp_packet_in_reason { OFPR_N_REASONS }; +enum ofp_flow_mod_command { + OFPFC_ADD, /* New flow. */ + OFPFC_MODIFY, /* Modify all matching flows. */ + OFPFC_MODIFY_STRICT, /* Modify entry strictly matching wildcards */ + OFPFC_DELETE, /* Delete all matching flows. */ + OFPFC_DELETE_STRICT /* Strictly match wildcards and priority. */ +}; + +enum ofp_flow_mod_flags { + OFPFF_SEND_FLOW_REM = 1 << 0, /* Send flow removed message when flow + * expires or is deleted. */ + OFPFF_CHECK_OVERLAP = 1 << 1, /* Check for overlapping entries first. */ +}; + +/* Action header for OFPAT10_VENDOR and OFPAT11_EXPERIMEMNTER. + * The rest of the body is vendor-defined. */ +struct ofp_action_vendor_header { + ovs_be16 type; /* OFPAT10_VENDOR. */ + ovs_be16 len; /* Length is a multiple of 8. */ + ovs_be32 vendor; /* Vendor ID, which takes the same form + as in "struct ofp_vendor_header". */ +}; +OFP_ASSERT(sizeof(struct ofp_action_vendor_header) == 8); + +/* Action header that is common to all actions. The length includes the + * header and any padding used to make the action 64-bit aligned. + * NB: The length of an action *must* always be a multiple of eight. */ +struct ofp_action_header { + ovs_be16 type; /* One of OFPAT*. */ + ovs_be16 len; /* Length of action, including this + header. This is the length of action, + including any padding to make it + 64-bit aligned. */ + uint8_t pad[4]; +}; +OFP_ASSERT(sizeof(struct ofp_action_header) == 8); + +/* Action structure for OFPAT10_SET_VLAN_VID and OFPAT11_SET_VLAN_VID. */ +struct ofp_action_vlan_vid { + ovs_be16 type; /* Type. */ + ovs_be16 len; /* Length is 8. */ + ovs_be16 vlan_vid; /* VLAN id. */ + uint8_t pad[2]; +}; +OFP_ASSERT(sizeof(struct ofp_action_vlan_vid) == 8); + +/* Action structure for OFPAT10_SET_VLAN_PCP and OFPAT11_SET_VLAN_PCP. */ +struct ofp_action_vlan_pcp { + ovs_be16 type; /* Type. */ + ovs_be16 len; /* Length is 8. */ + uint8_t vlan_pcp; /* VLAN priority. */ + uint8_t pad[3]; +}; +OFP_ASSERT(sizeof(struct ofp_action_vlan_pcp) == 8); + +/* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ +struct ofp_action_dl_addr { + ovs_be16 type; /* Type. */ + ovs_be16 len; /* Length is 16. */ + uint8_t dl_addr[OFP_ETH_ALEN]; /* Ethernet address. */ + uint8_t pad[6]; +}; +OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); + +/* Action structure for OFPAT10_SET_NW_SRC/DST and OFPAT11_SET_NW_SRC/DST. */ +struct ofp_action_nw_addr { + ovs_be16 type; /* Type. */ + ovs_be16 len; /* Length is 8. */ + ovs_be32 nw_addr; /* IP address. */ +}; +OFP_ASSERT(sizeof(struct ofp_action_nw_addr) == 8); + +/* Action structure for OFPAT10_SET_NW_TOS and OFPAT11_SET_NW_TOS. */ +struct ofp_action_nw_tos { + ovs_be16 type; /* Type.. */ + ovs_be16 len; /* Length is 8. */ + uint8_t nw_tos; /* DSCP in high 6 bits, rest ignored. */ + uint8_t pad[3]; +}; +OFP_ASSERT(sizeof(struct ofp_action_nw_tos) == 8); + +/* Action structure for OFPAT10_SET_TP_SRC/DST and OFPAT11_SET_TP_SRC/DST. */ +struct ofp_action_tp_port { + ovs_be16 type; /* Type. */ + ovs_be16 len; /* Length is 8. */ + ovs_be16 tp_port; /* TCP/UDP port. */ + uint8_t pad[2]; +}; +OFP_ASSERT(sizeof(struct ofp_action_tp_port) == 8); + /* Why was this flow removed? */ enum ofp_flow_removed_reason { OFPRR_IDLE_TIMEOUT, /* Flow idle time exceeded idle_timeout. */ OFPRR_HARD_TIMEOUT, /* Time exceeded hard_timeout. */ OFPRR_DELETE, /* Evicted by a DELETE flow mod. */ - OFPRR_GROUP_DELETE /* Group was removed. */ + OFPRR_GROUP_DELETE, /* Group was removed. */ + OFPRR_METER_DELETE, /* Meter was removed. */ + OFPRR_EVICTION, /* Switch eviction to free resources. */ }; /* What changed about the physical port */ @@ -239,55 +387,38 @@ enum ofp_port_reason { /* A physical port has changed in the datapath */ struct ofp_port_status { - struct ofp_header header; uint8_t reason; /* One of OFPPR_*. */ uint8_t pad[7]; /* Align to 64-bits. */ /* Followed by struct ofp10_phy_port or struct ofp11_port. */ }; -OFP_ASSERT(sizeof(struct ofp_port_status) == 16); - -enum ofp_stats_types { - /* Description of this OpenFlow switch. (OFPMP_DESC) - * The OF1.0 request is struct ofp_stats_msg. - * The OF1.0 reply is struct ofp_desc_stats. */ - OFPST_DESC = 0, - - /* Individual flow statistics. (OFPMP_FLOW) - * The OF1.0 request is struct ofp_flow_stats_request. - * The OF1.0 reply body is an array of struct ofp_flow_stats. */ - OFPST_FLOW = 1, - - /* Aggregate flow statistics. (OFPMP_AGGREGATE) - * The OF1.0 request is struct ofp_flow_stats_request. - * The OF1.0 reply is struct ofp_aggregate_stats_reply. */ - OFPST_AGGREGATE = 2, +OFP_ASSERT(sizeof(struct ofp_port_status) == 8); - /* Flow table statistics. (OFPMP_TABLE) - * The OF1.0 request is struct ofp_stats_msg. - * The OF1.0 reply body is an array of struct ofp_table_stats. */ - OFPST_TABLE = 3, - - /* Physical port statistics. (OFPMP_PORT_STATS) - * The OF1.0 request is struct ofp_port_stats_request. - * The OF1.0 reply body is an array of struct ofp_port_stats. */ - OFPST_PORT = 4, - - /* Queue statistics for a port. (OFPMP_QUEUE) - * The OF1.0 request is struct ofp_stats_msg. - * The OF1.0 reply body is an array of struct ofp_queue_stats. */ - OFPST_QUEUE = 5, - - /* Port description. (OFPMP_PORT_DESC) - * This was introduced as part of OF1.3, but is useful for bridges - * with many ports, so we support it with OF1.0, too. - * The OF1.0 request is struct ofp_stats_msg. - * The OF1.0 reply body is an array of struct ofp10_phy_port. */ - OFPST_PORT_DESC = 13, +enum ofp_stats_reply_flags { + OFPSF_REPLY_MORE = 1 << 0 /* More replies to follow. */ +}; - /* Vendor extension. - * The OF1.0 request and reply begin with struct ofp_vendor_stats. */ - OFPST_VENDOR = 0xffff +#define DESC_STR_LEN 256 +#define SERIAL_NUM_LEN 32 +/* Body of reply to OFPST_DESC request. Each entry is a NULL-terminated ASCII + * string. */ +struct ofp_desc_stats { + char mfr_desc[DESC_STR_LEN]; /* Manufacturer description. */ + char hw_desc[DESC_STR_LEN]; /* Hardware description. */ + char sw_desc[DESC_STR_LEN]; /* Software description. */ + char serial_num[SERIAL_NUM_LEN]; /* Serial number. */ + char dp_desc[DESC_STR_LEN]; /* Human readable description of + the datapath. */ }; +OFP_ASSERT(sizeof(struct ofp_desc_stats) == 1056); + +/* Reply to OFPST_AGGREGATE request. */ +struct ofp_aggregate_stats_reply { + ovs_32aligned_be64 packet_count; /* Number of packets in flows. */ + ovs_32aligned_be64 byte_count; /* Number of bytes in flows. */ + ovs_be32 flow_count; /* Number of flows. */ + uint8_t pad[4]; /* Align to 64 bits. */ +}; +OFP_ASSERT(sizeof(struct ofp_aggregate_stats_reply) == 24); /* The match type indicates the match structure (set of fields that compose the * match) in use. The match type is placed in the type field at the beginning @@ -302,4 +433,36 @@ enum ofp_match_type { OFPMT_OXM = 1, /* OpenFlow Extensible Match */ }; +/* Group numbering. Groups can use any number up to OFPG_MAX. */ +enum ofp_group { + /* Last usable group number. */ + OFPG_MAX = 0xffffff00, + + /* Fake groups. */ + OFPG_ALL = 0xfffffffc, /* All groups, for group delete commands. */ + OFPG_ANY = 0xffffffff /* Wildcard, for flow stats requests. */ +}; + +enum ofp_hello_elem_type { + OFPHET_VERSIONBITMAP = 1, /* Bitmap of version supported. */ +}; + +/* Common header for all Hello Elements */ +struct ofp_hello_elem_header { + ovs_be16 type; /* One of OFPHET_*. */ + ovs_be16 length; /* Length in bytes of this element. */ +}; +OFP_ASSERT(sizeof(struct ofp_hello_elem_header) == 4); + +/* Vendor extension. */ +struct ofp_vendor_header { + struct ofp_header header; /* Type OFPT_VENDOR or OFPT_EXPERIMENTER. */ + ovs_be32 vendor; /* Vendor ID: + * - MSB 0: low-order bytes are IEEE OUI. + * - MSB != 0: defined by OpenFlow + * consortium. */ + /* Vendor-defined arbitrary additional data. */ +}; +OFP_ASSERT(sizeof(struct ofp_vendor_header) == 12); + #endif /* openflow/openflow-common.h */