module vpp-classifier { yang-version 1; namespace "urn:opendaylight:params:xml:ns:yang:vpp:classifier"; prefix "vpp-classifier"; revision "2016-03-15" { description "This revision adds policer support"; } revision "2016-12-14" { description "This revision adds the following new features: - updates order of union types for opaque-index"; } revision "2015-06-03" { description "Initial revision of model for VPP packet classifier. The model can be used ony to implement ACLs. Other classify table usages are not supported yet, see https://jira.fd.io/browse/VPP-203 for details."; reference "https://wiki.fd.io/view/VPP/Introduction_To_N-tuple_Classifiers"; } // TODO add revision (policer inclusion) import ietf-yang-types { prefix "yang"; } import policer { prefix "policer"; } typedef classify-table-ref { type leafref { path "/vpp-classifier:vpp-classifier/classify-table/name"; } description "This type is used by data models that need to reference configured classify tables."; } typedef packet-handling-action { type enumeration { enum "deny" { // by VPP convention, first neighbour node (at index 0) is a drop node value 0; } enum "permit" { value -1; // indicates that the next node not set } } } typedef vpp-node-name { type string; } typedef vpp-node { type union { type packet-handling-action; type vpp-node-name; } description "Defines VPP node reference using packet handling action or relative node name (if definition in terms of packet handling action is not possible)."; } typedef opaque-index { type union { type uint32; type vpp-node; } description "Defines opaque-index type - metadata that can be attached to session-hit packets. Vpp nodes can't be referenced by index, because node indexes might change after vpp restart."; } grouping classify-session-attributes { description "Defines classify session attributes that are mapped to classify_add_del_session and classify_session_details messages parameters. Either hit_next or policer_hit_next should be defined."; choice next_node { mandatory true; description "Options for expressing the next node on classify hit and associated metadata to be passed"; case standard { leaf hit_next { mandatory true; type vpp-node; description "Vpp node to which packet will be send when it produces a match."; } leaf opaque_index { type opaque-index; } } case policer { leaf policer_hit_next { mandatory true; type policer:policer-ref; } leaf color_classfier { type policer:color-classfier; } } } leaf advance { type int32; default 0; description "Nodes like ip4/6-classify use the parameter to \"consume\" networking layer. Example: tunnel decapsulation."; } } grouping classify-table-base-attributes { description "Defines classify table attributes that are mapped to classify_add_del_table message parameters."; leaf classifier-node { type vpp-node-name; description "Name of VPP node the table is defined for."; } leaf nbuckets { mandatory true; type uint32; description "Used by classifier hashing algorithm. It is not possible to resize the bucket array, therefore suggested value is approximate number of expected entries."; } leaf skip_n_vectors { type uint32; default 0; description "Number of 16 byte vectors to be skipped before applying mask."; } leaf next_table { type classify-table-ref; description "Reference to the next classify table. Required when multiple table chaining is used."; } leaf miss_next { mandatory true; type vpp-node; description "Vpp node to which packet will be send when it falis to produce a match"; } leaf mask { type yang:hex-string; mandatory true; description "Defines match mask (multiple of 16 bytes)"; } list classify-session { key "match"; leaf match { type yang:hex-string; description "Defines actual value to be matched that is a byte vector, which length is multiple of 16 bytes"; must "string-length(match) = string-length(../../mask)" { error-message "Match length is not equal to classify table mask length."; description "Match length must be equal to classify table mask length."; } } uses classify-session-attributes; } } grouping classify-table-config-attributes { description "Defines classify table config only attributes (present in classify_add_del_table message but not in classify_table_info_reply)."; // TODO(HC2VPP-10): move to classify-table-base-attributes // after https://jira.fd.io/browse/VPP-208 is fixed leaf memory_size { type uint32; // mandatory true; // TODO(HC2VPP-10): uncomment description "Memory size for classify table and its entries."; } } grouping classify-table-operational-attributes { description "Defines classify table operational attributes (present in classify_table_info_reply message but not in classify_add_del_table)."; leaf active_sessions { type uint32; config false; description "Number of sessions defined for the classify table."; } } container vpp-classifier { list classify-table { key "name"; leaf name { type string; description "Hides classify table identifier managed by vpp."; } uses classify-table-base-attributes; uses classify-table-config-attributes; } } container vpp-classifier-state { config false; list classify-table { key "name"; leaf name { type string; description "Hides classify table identifier managed by vpp."; } uses classify-table-base-attributes; uses classify-table-operational-attributes; } } }