X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fclassifier.h;h=d63dfb0f9b853b7a9fc757c44a661b916b2064c2;hb=32455024;hp=64f5e31b81d17bd73216509a2b88604807626656;hpb=52ce26ee3b13496f65132996120e59ec29ab64c2;p=openvswitch diff --git a/lib/classifier.h b/lib/classifier.h index 64f5e31b..d63dfb0f 100644 --- a/lib/classifier.h +++ b/lib/classifier.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009, 2010 Nicira Networks. + * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -32,6 +32,10 @@ #include "openflow/nicira-ext.h" #include "openflow/openflow.h" +#ifdef __cplusplus +extern "C" { +#endif + /* A flow classifier. */ struct classifier { int n_rules; /* Total number of rules. */ @@ -40,13 +44,21 @@ struct classifier { /* A set of rules that all have the same fields wildcarded. */ struct cls_table { - struct hmap_node hmap_node; /* Within struct classifier 'wctables'. */ + struct hmap_node hmap_node; /* Within struct classifier 'tables' hmap. */ struct hmap rules; /* Contains "struct cls_rule"s. */ struct flow_wildcards wc; /* Wildcards for fields. */ int n_table_rules; /* Number of rules, including duplicates. */ - int n_refs; /* Reference count used during iteration. */ + bool is_catchall; /* True if this table wildcards every field. */ }; +/* Returns true if 'table' is a "catch-all" table that will match every + * packet (if there is no higher-priority match). */ +static inline bool +cls_table_is_catchall(const struct cls_table *table) +{ + return table->is_catchall; +} + /* A flow classification rule. * * Use one of the cls_rule_*() functions to initialize a cls_rule. @@ -67,19 +79,78 @@ struct cls_rule { unsigned int priority; /* Larger numbers are higher priorities. */ }; -enum { - CLS_INC_EXACT = 1 << 0, /* Include exact-match flows? */ - CLS_INC_WILD = 1 << 1, /* Include flows with wildcards? */ - CLS_INC_ALL = CLS_INC_EXACT | CLS_INC_WILD -}; - -void cls_rule_from_flow(const struct flow *, uint32_t wildcards, - unsigned int priority, struct cls_rule *); -void cls_rule_from_match(const struct ofp_match *, unsigned int priority, - int flow_format, uint64_t cookie, struct cls_rule *); +void cls_rule_init(const struct flow *, const struct flow_wildcards *, + unsigned int priority, struct cls_rule *); +void cls_rule_init_exact(const struct flow *, unsigned int priority, + struct cls_rule *); +void cls_rule_init_catchall(struct cls_rule *, unsigned int priority); void cls_rule_zero_wildcarded_fields(struct cls_rule *); +bool cls_rule_is_loose_match(const struct cls_rule *rule, + const struct cls_rule *criteria); + +void cls_rule_set_reg(struct cls_rule *, unsigned int reg_idx, uint32_t value); +void cls_rule_set_reg_masked(struct cls_rule *, unsigned int reg_idx, + uint32_t value, uint32_t mask); +void cls_rule_set_metadata(struct cls_rule *, ovs_be64 metadata); +void cls_rule_set_metadata_masked(struct cls_rule *, ovs_be64 metadata, + ovs_be64 mask); +void cls_rule_set_tun_id(struct cls_rule *, ovs_be64 tun_id); +void cls_rule_set_tun_id_masked(struct cls_rule *, + ovs_be64 tun_id, ovs_be64 mask); +void cls_rule_set_in_port(struct cls_rule *, uint16_t ofp_port); +void cls_rule_set_dl_type(struct cls_rule *, ovs_be16); +void cls_rule_set_dl_src(struct cls_rule *, const uint8_t[6]); +void cls_rule_set_dl_src_masked(struct cls_rule *, const uint8_t dl_src[6], + const uint8_t mask[6]); +void cls_rule_set_dl_dst(struct cls_rule *, const uint8_t[6]); +void cls_rule_set_dl_dst_masked(struct cls_rule *, const uint8_t dl_dst[6], + const uint8_t mask[6]); +void cls_rule_set_dl_tci(struct cls_rule *, ovs_be16 tci); +void cls_rule_set_dl_tci_masked(struct cls_rule *, + ovs_be16 tci, ovs_be16 mask); +void cls_rule_set_any_vid(struct cls_rule *); +void cls_rule_set_dl_vlan(struct cls_rule *, ovs_be16); +void cls_rule_set_any_pcp(struct cls_rule *); +void cls_rule_set_dl_vlan_pcp(struct cls_rule *, uint8_t); +void cls_rule_set_tp_src(struct cls_rule *, ovs_be16); +void cls_rule_set_tp_src_masked(struct cls_rule *, + ovs_be16 port, ovs_be16 mask); +void cls_rule_set_tp_dst(struct cls_rule *, ovs_be16); +void cls_rule_set_tp_dst_masked(struct cls_rule *, + ovs_be16 port, ovs_be16 mask); +void cls_rule_set_nw_proto(struct cls_rule *, uint8_t); +void cls_rule_set_nw_src(struct cls_rule *, ovs_be32); +void cls_rule_set_nw_src_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask); +void cls_rule_set_nw_dst(struct cls_rule *, ovs_be32); +void cls_rule_set_nw_dst_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask); +void cls_rule_set_nw_dscp(struct cls_rule *, uint8_t); +void cls_rule_set_nw_ecn(struct cls_rule *, uint8_t); +void cls_rule_set_nw_ttl(struct cls_rule *, uint8_t); +void cls_rule_set_nw_frag(struct cls_rule *, uint8_t nw_frag); +void cls_rule_set_nw_frag_masked(struct cls_rule *, + uint8_t nw_frag, uint8_t mask); +void cls_rule_set_icmp_type(struct cls_rule *, uint8_t); +void cls_rule_set_icmp_code(struct cls_rule *, uint8_t); +void cls_rule_set_arp_sha(struct cls_rule *, const uint8_t[6]); +void cls_rule_set_arp_tha(struct cls_rule *, const uint8_t[6]); +void cls_rule_set_ipv6_src(struct cls_rule *, const struct in6_addr *); +void cls_rule_set_ipv6_src_masked(struct cls_rule *, const struct in6_addr *, + const struct in6_addr *); +void cls_rule_set_ipv6_dst(struct cls_rule *, const struct in6_addr *); +void cls_rule_set_ipv6_dst_masked(struct cls_rule *, const struct in6_addr *, + const struct in6_addr *); +void cls_rule_set_ipv6_label(struct cls_rule *, ovs_be32); +void cls_rule_set_ipv6_label_masked(struct cls_rule *, ovs_be32, ovs_be32); +void cls_rule_set_nd_target(struct cls_rule *, const struct in6_addr *); +void cls_rule_set_nd_target_masked(struct cls_rule *, const struct in6_addr *, + const struct in6_addr *); + +bool cls_rule_equal(const struct cls_rule *, const struct cls_rule *); +uint32_t cls_rule_hash(const struct cls_rule *, uint32_t basis); + +void cls_rule_format(const struct cls_rule *, struct ds *); char *cls_rule_to_string(const struct cls_rule *); void cls_rule_print(const struct cls_rule *); @@ -87,41 +158,48 @@ void classifier_init(struct classifier *); void classifier_destroy(struct classifier *); bool classifier_is_empty(const struct classifier *); int classifier_count(const struct classifier *); -int classifier_count_exact(const struct classifier *); -struct cls_rule *classifier_insert(struct classifier *, struct cls_rule *); -void classifier_insert_exact(struct classifier *, struct cls_rule *); +void classifier_insert(struct classifier *, struct cls_rule *); +struct cls_rule *classifier_replace(struct classifier *, struct cls_rule *); void classifier_remove(struct classifier *, struct cls_rule *); struct cls_rule *classifier_lookup(const struct classifier *, - const struct flow *, int include); + const struct flow *); bool classifier_rule_overlaps(const struct classifier *, const struct cls_rule *); typedef void cls_cb_func(struct cls_rule *, void *aux); -void classifier_for_each(const struct classifier *, int include, - cls_cb_func *, void *aux); -void classifier_for_each_match(const struct classifier *, - const struct cls_rule *, - int include, cls_cb_func *, void *aux); struct cls_rule *classifier_find_rule_exactly(const struct classifier *, const struct cls_rule *); + +/* Iteration. */ -/* Iteration shorthands. */ +struct cls_cursor { + const struct classifier *cls; + const struct cls_table *table; + const struct cls_rule *target; +}; -struct cls_table *classifier_exact_table(const struct classifier *); -struct cls_rule *cls_table_first_rule(const struct cls_table *); -struct cls_rule *cls_table_next_rule(const struct cls_table *, - const struct cls_rule *); +void cls_cursor_init(struct cls_cursor *, const struct classifier *, + const struct cls_rule *match); +struct cls_rule *cls_cursor_first(struct cls_cursor *); +struct cls_rule *cls_cursor_next(struct cls_cursor *, struct cls_rule *); -#define CLS_TABLE_FOR_EACH_RULE(RULE, MEMBER, TABLE) \ - for ((RULE) = OBJECT_CONTAINING(cls_table_first_rule(TABLE), \ - RULE, MEMBER); \ +#define CLS_CURSOR_FOR_EACH(RULE, MEMBER, CURSOR) \ + for (ASSIGN_CONTAINER(RULE, cls_cursor_first(CURSOR), MEMBER); \ &(RULE)->MEMBER != NULL; \ - (RULE) = OBJECT_CONTAINING(cls_table_next_rule(TABLE, \ - &(RULE)->MEMBER), \ - RULE, MEMBER)) - -#define CLASSIFIER_FOR_EACH_EXACT_RULE(RULE, MEMBER, CLS) \ - CLS_TABLE_FOR_EACH_RULE (RULE, MEMBER, classifier_exact_table(CLS)) + ASSIGN_CONTAINER(RULE, cls_cursor_next(CURSOR, &(RULE)->MEMBER), \ + MEMBER)) + +#define CLS_CURSOR_FOR_EACH_SAFE(RULE, NEXT, MEMBER, CURSOR) \ + for (ASSIGN_CONTAINER(RULE, cls_cursor_first(CURSOR), MEMBER); \ + (&(RULE)->MEMBER != NULL \ + ? ASSIGN_CONTAINER(NEXT, cls_cursor_next(CURSOR, &(RULE)->MEMBER), \ + MEMBER) \ + : 0); \ + (RULE) = (NEXT)) + +#ifdef __cplusplus +} +#endif #endif /* classifier.h */