X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fopenflow%2Fnicira-ext.h;h=e9790fd5772f14fccaeb0270f2458f39eeafb1d6;hb=4cceacb94cfc1d75a961d3d746d2ae369c397ae5;hp=1c5d3448fa0a564a5215d386f84256364643a31c;hpb=982697a4d24caa0a3bdaf85db67619338b382e50;p=sliver-openvswitch.git diff --git a/include/openflow/nicira-ext.h b/include/openflow/nicira-ext.h index 1c5d3448f..e9790fd57 100644 --- a/include/openflow/nicira-ext.h +++ b/include/openflow/nicira-ext.h @@ -118,7 +118,7 @@ enum nx_hash_fields { * instead of having the switch decide which table is most appropriate as * required by OpenFlow 1.0. By default, the extension is disabled. * - * When this feature is enabled, Open vSwitch treats struct ofp_flow_mod's + * When this feature is enabled, Open vSwitch treats struct ofp10_flow_mod's * 16-bit 'command' member as two separate fields. The upper 8 bits are used * as the table ID, the lower 8 bits specify the command as usual. A table ID * of 0xff is treated like a wildcarded table ID. @@ -129,10 +129,9 @@ enum nx_hash_fields { * table. If an identical flow already exists in that table only, then it * is replaced. If the flow cannot be placed in the specified table, * either because the table is full or because the table cannot support - * flows of the given type, the switch replies with an - * OFPFMFC_ALL_TABLES_FULL error. (A controller can distinguish these - * cases by comparing the current and maximum number of entries reported - * in ofp_table_stats.) + * flows of the given type, the switch replies with an OFPFMFC_TABLE_FULL + * error. (A controller can distinguish these cases by comparing the + * current and maximum number of entries reported in ofp_table_stats.) * * If the table ID is wildcarded, the switch picks an appropriate table * itself. If an identical flow already exist in the selected flow table, @@ -170,25 +169,34 @@ OFP_ASSERT(sizeof(struct nx_set_packet_in_format) == 4); /* NXT_PACKET_IN (analogous to OFPT_PACKET_IN). * - * The NXT_PACKET_IN format is intended to model the OpenFlow-1.2 PACKET_IN - * with some minor tweaks. Most notably NXT_PACKET_IN includes the cookie of - * the rule which triggered the NXT_PACKET_IN message, and the match fields are - * in NXM format. + * NXT_PACKET_IN is similar to the OpenFlow 1.2 OFPT_PACKET_IN. The + * differences are: * - * The match fields in the NXT_PACKET_IN are intended to contain flow - * processing metadata collected at the time the NXT_PACKET_IN message was - * triggered. It is minimally required to contain the NXM_OF_IN_PORT of the - * packet, but may include other NXM headers such as flow registers. The match - * fields are allowed to contain non-metadata (e.g. NXM_OF_ETH_SRC etc). - * However, this information can typically be found in the packet directly, so - * it may be redundant. + * - NXT_PACKET_IN includes the cookie of the rule that triggered the + * message. (OpenFlow 1.3 OFPT_PACKET_IN also includes the cookie.) + * + * - The metadata fields use NXM (instead of OXM) field numbers. + * + * Open vSwitch 1.9.0 and later omits metadata fields that are zero (as allowed + * by OpenFlow 1.2). Earlier versions included all implemented metadata + * fields. + * + * Open vSwitch does not include non-metadata in the nx_match, because by + * definition that information can be found in the packet itself. The format + * and the standards allow this, however, so controllers should be prepared to + * tolerate future changes. + * + * The NXM format is convenient for reporting metadata values, but it is + * important not to interpret the format as matching against a flow, because it + * does not. Nothing is being matched; arbitrary metadata masks would not be + * meaningful. * * Whereas in most cases a controller can expect to only get back NXM fields * that it set up itself (e.g. flow dumps will ordinarily report only NXM * fields from flows that the controller added), NXT_PACKET_IN messages might * contain fields that the controller does not understand, because the switch * might support fields (new registers, new protocols, etc.) that the - * controller does not.  The controller must prepared to tolerate these. + * controller does not. The controller must prepared to tolerate these. * * The 'cookie' and 'table_id' fields have no meaning when 'reason' is * OFPR_NO_MATCH. In this case they should be set to 0. */ @@ -210,7 +218,7 @@ struct nx_packet_in { * The padding bytes preceding the Ethernet frame ensure that the IP * header (if any) following the Ethernet header is 32-bit aligned. */ - /* uint8_t nxm_fields[...]; */ /* Match. */ + /* uint8_t nxm_fields[...]; */ /* NXM headers. */ /* uint8_t pad[2]; */ /* Align to 64 bit + 16 bit. */ /* uint8_t data[0]; */ /* Ethernet frame. */ }; @@ -284,7 +292,7 @@ enum nx_action_subtype { NXAST_NOTE, /* struct nx_action_note */ NXAST_SET_TUNNEL64, /* struct nx_action_set_tunnel64 */ NXAST_MULTIPATH, /* struct nx_action_multipath */ - NXAST_AUTOPATH, /* struct nx_action_autopath */ + NXAST_AUTOPATH__DEPRECATED, /* struct nx_action_autopath */ NXAST_BUNDLE, /* struct nx_action_bundle */ NXAST_BUNDLE_LOAD, /* struct nx_action_bundle */ NXAST_RESUBMIT_TABLE, /* struct nx_action_resubmit */ @@ -294,6 +302,8 @@ enum nx_action_subtype { NXAST_DEC_TTL, /* struct nx_action_header */ NXAST_FIN_TIMEOUT, /* struct nx_action_fin_timeout */ NXAST_CONTROLLER, /* struct nx_action_controller */ + NXAST_DEC_TTL_CNT_IDS, /* struct nx_action_cnt_ids */ + NXAST_WRITE_METADATA, /* struct nx_action_write_metadata */ }; /* Header for Nicira-defined actions. */ @@ -493,6 +503,10 @@ OFP_ASSERT(sizeof(struct nx_action_pop_queue) == 16); * The switch will reject actions for which src_ofs+n_bits is greater than the * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. + * + * This action behaves properly when 'src' overlaps with 'dst', that is, it + * behaves as if 'src' were copied out to a temporary buffer, then the + * temporary buffer copied to 'dst'. */ struct nx_action_reg_move { ovs_be16 type; /* OFPAT_VENDOR. */ @@ -1060,6 +1074,35 @@ enum nx_bd_algorithm { * Uses the 'fields' and 'basis' parameters. */ NX_BD_ALG_HRW /* Highest Random Weight. */ }; + + +/* Action structure for NXAST_DEC_TTL_CNT_IDS. + * + * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the + * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or + * hop limit is 0 or 1, sends a packet-in to the controllers with each of the + * 'n_controllers' controller IDs specified in 'cnt_ids'. + * + * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is + * sent only to controllers with id 0.) + */ +struct nx_action_cnt_ids { + ovs_be16 type; /* OFPAT_VENDOR. */ + ovs_be16 len; /* Length including slaves. */ + ovs_be32 vendor; /* NX_VENDOR_ID. */ + ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ + + ovs_be16 n_controllers; /* Number of controllers. */ + uint8_t zeros[4]; /* Must be zero. */ + + /* Followed by 1 or more controller ids. + * + * uint16_t cnt_ids[]; // Controller ids. + * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. + */ +}; +OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); + /* Action structure for NXAST_OUTPUT_REG. * @@ -1857,7 +1900,10 @@ struct nx_flow_stats { OFP_ASSERT(sizeof(struct nx_flow_stats) == 48); /* Nicira vendor stats request of type NXST_AGGREGATE (analogous to - * OFPST_AGGREGATE request). */ + * OFPST_AGGREGATE request). + * + * The reply format is identical to the reply format for OFPST_AGGREGATE, + * except for the header. */ struct nx_aggregate_stats_request { ovs_be16 out_port; /* Require matching entries to include this as an output port. A value of OFPP_NONE @@ -1874,16 +1920,6 @@ struct nx_aggregate_stats_request { */ }; OFP_ASSERT(sizeof(struct nx_aggregate_stats_request) == 8); - -/* Body for nicira_stats_msg reply of type NXST_AGGREGATE (analogous to - * OFPST_AGGREGATE reply). */ -struct nx_aggregate_stats_reply { - ovs_be64 packet_count; /* Number of packets, UINT64_MAX if unknown. */ - ovs_be64 byte_count; /* Number of bytes, UINT64_MAX if unknown. */ - ovs_be32 flow_count; /* Number of flows. */ - uint8_t pad[4]; /* Align to 64 bits. */ -}; -OFP_ASSERT(sizeof(struct nx_aggregate_stats_reply) == 24); /* NXT_SET_CONTROLLER_ID. * @@ -2141,10 +2177,10 @@ OFP_ASSERT(sizeof(struct nx_flow_update_full) == 24); * change in future versions of Open vSwitch. * * OVS will always send the notifications for a given flow table change before - * the reply to a OFPT_BARRIER_REQUEST request that precedes the flow table - * change. Thus, if the controller does not receive an abbreviated - * notification for a flow_mod before the next OFPT_BARRIER_REPLY, it will - * never receive one. */ + * the reply to a OFPT_BARRIER_REQUEST request that follows the flow table + * change. Thus, if the controller does not receive an abbreviated (or + * unabbreviated) notification for a flow_mod before the next + * OFPT_BARRIER_REPLY, it will never receive one. */ struct nx_flow_update_abbrev { ovs_be16 length; /* Length is 8. */ ovs_be16 event; /* NXFME_ABBREV. */ @@ -2160,4 +2196,18 @@ struct nx_flow_monitor_cancel { }; OFP_ASSERT(sizeof(struct nx_flow_monitor_cancel) == 4); +/* Action structure for NXAST_WRITE_METADATA. + * + * Modifies the 'mask' bits of the metadata value. */ +struct nx_action_write_metadata { + ovs_be16 type; /* OFPAT_VENDOR. */ + ovs_be16 len; /* Length is 32. */ + ovs_be32 vendor; /* NX_VENDOR_ID. */ + ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ + uint8_t zeros[6]; /* Must be zero. */ + ovs_be64 metadata; /* Metadata register. */ + ovs_be64 mask; /* Metadata mask. */ +}; +OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); + #endif /* openflow/nicira-ext.h */