X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fclassifier.h;h=3370ce8bc356a5034bded6719eafcbcd1545a241;hb=81a76618be9ea195a1e4a881ba9591728891d10b;hp=2dc0bdf9135551a210dbea0bf056932187bb9463;hpb=66642cb40b12594c62f3d3037f1e4efa528416b7;p=openvswitch diff --git a/lib/classifier.h b/lib/classifier.h index 2dc0bdf9..3370ce8b 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. @@ -29,9 +29,14 @@ #include "flow.h" #include "hmap.h" #include "list.h" +#include "match.h" #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. */ @@ -40,72 +45,46 @@ 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. */ + bool is_catchall; /* True if this table wildcards every field. */ }; -/* A flow classification rule. - * - * Use one of the cls_rule_*() functions to initialize a cls_rule. - * - * The cls_rule_*() functions below maintain the following important - * invariant that the classifier depends on: - * - * - If a bit or a field is wildcarded in 'wc', then the corresponding bit or - * field in 'flow' is set to all-0-bits. (The - * cls_rule_zero_wildcarded_fields() function can be used to restore this - * invariant after adding wildcards.) - */ +/* 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 rule in a "struct classifier" */ struct cls_rule { struct hmap_node hmap_node; /* Within struct cls_table 'rules'. */ struct list list; /* List of identical, lower-priority rules. */ - struct flow flow; /* All field values. */ - struct flow_wildcards wc; /* Wildcards for fields. */ + struct match match; /* Matching rule. */ unsigned int priority; /* Larger numbers are higher priorities. */ }; -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 *); - -void cls_rule_set_in_port(struct cls_rule *, uint16_t odp_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_dst(struct cls_rule *, const uint8_t[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_dst(struct cls_rule *, ovs_be16); -void cls_rule_set_nw_proto(struct cls_rule *, uint8_t); -void cls_rule_set_nw_src(struct cls_rule *, ovs_be32); -bool 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); -bool cls_rule_set_nw_dst_masked(struct cls_rule *, ovs_be32 ip, ovs_be32 mask); -void cls_rule_set_nw_tos(struct cls_rule *, uint8_t); -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_init(struct cls_rule *, + const struct match *, unsigned int priority); bool cls_rule_equal(const struct cls_rule *, const struct cls_rule *); +uint32_t cls_rule_hash(const struct cls_rule *, uint32_t basis); -char *cls_rule_to_string(const struct cls_rule *); -void cls_rule_print(const struct cls_rule *); +void cls_rule_format(const struct cls_rule *, struct ds *); + +bool cls_rule_is_loose_match(const struct cls_rule *rule, + const struct match *criteria); void classifier_init(struct classifier *); void classifier_destroy(struct classifier *); bool classifier_is_empty(const struct classifier *); int classifier_count(const struct classifier *); -struct cls_rule *classifier_insert(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 *); @@ -116,6 +95,9 @@ typedef void cls_cb_func(struct cls_rule *, void *aux); struct cls_rule *classifier_find_rule_exactly(const struct classifier *, const struct cls_rule *); +struct cls_rule *classifier_find_match_exactly(const struct classifier *, + const struct match *, + unsigned int priority); /* Iteration. */ @@ -131,21 +113,21 @@ struct cls_rule *cls_cursor_first(struct cls_cursor *); struct cls_rule *cls_cursor_next(struct cls_cursor *, struct cls_rule *); #define CLS_CURSOR_FOR_EACH(RULE, MEMBER, CURSOR) \ - for ((RULE) = OBJECT_CONTAINING(cls_cursor_first(CURSOR), \ - RULE, MEMBER); \ + for (ASSIGN_CONTAINER(RULE, cls_cursor_first(CURSOR), MEMBER); \ &(RULE)->MEMBER != NULL; \ - (RULE) = OBJECT_CONTAINING(cls_cursor_next(CURSOR, \ - &(RULE)->MEMBER), \ - RULE, MEMBER)) + ASSIGN_CONTAINER(RULE, cls_cursor_next(CURSOR, &(RULE)->MEMBER), \ + MEMBER)) #define CLS_CURSOR_FOR_EACH_SAFE(RULE, NEXT, MEMBER, CURSOR) \ - for ((RULE) = OBJECT_CONTAINING(cls_cursor_first(CURSOR), \ - RULE, MEMBER); \ + for (ASSIGN_CONTAINER(RULE, cls_cursor_first(CURSOR), MEMBER); \ (&(RULE)->MEMBER != NULL \ - ? ((NEXT) = OBJECT_CONTAINING(cls_cursor_next(CURSOR, \ - &(RULE)->MEMBER), \ - RULE, MEMBER), 1) \ + ? ASSIGN_CONTAINER(NEXT, cls_cursor_next(CURSOR, &(RULE)->MEMBER), \ + MEMBER) \ : 0); \ (RULE) = (NEXT)) +#ifdef __cplusplus +} +#endif + #endif /* classifier.h */