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/*
* 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.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MATCH_H
#define MATCH_H 1
#include "flow.h"
struct ds;
/* A flow classification match.
*
* Use one of the match_*() functions to initialize a "struct match".
*
* The match_*() functions below maintain the following important invariant.
* 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 match_zero_wildcarded_fields()
* function can be used to restore this invariant after adding wildcards.) */
struct match {
struct flow flow;
struct flow_wildcards wc;
};
void match_init(struct match *,
const struct flow *, const struct flow_wildcards *);
void match_wc_init(struct match *match, const struct flow *flow);
void match_init_catchall(struct match *);
void match_init_exact(struct match *, const struct flow *);
void match_zero_wildcarded_fields(struct match *);
void match_set_reg(struct match *, unsigned int reg_idx, uint32_t value);
void match_set_reg_masked(struct match *, unsigned int reg_idx,
uint32_t value, uint32_t mask);
void match_set_metadata(struct match *, ovs_be64 metadata);
void match_set_metadata_masked(struct match *,
ovs_be64 metadata, ovs_be64 mask);
void match_set_tun_id(struct match *, ovs_be64 tun_id);
void match_set_tun_id_masked(struct match *, ovs_be64 tun_id, ovs_be64 mask);
void match_set_tun_src(struct match *match, ovs_be32 src);
void match_set_tun_src_masked(struct match *match, ovs_be32 src, ovs_be32 mask);
void match_set_tun_dst(struct match *match, ovs_be32 dst);
void match_set_tun_dst_masked(struct match *match, ovs_be32 dst, ovs_be32 mask);
void match_set_tun_ttl(struct match *match, uint8_t ttl);
void match_set_tun_ttl_masked(struct match *match, uint8_t ttl, uint8_t mask);
void match_set_tun_tos(struct match *match, uint8_t tos);
void match_set_tun_tos_masked(struct match *match, uint8_t tos, uint8_t mask);
void match_set_tun_flags(struct match *match, uint16_t flags);
void match_set_tun_flags_masked(struct match *match, uint16_t flags, uint16_t mask);
void match_set_in_port(struct match *, uint16_t ofp_port);
void match_set_skb_mark(struct match *, uint32_t skb_mark);
void match_set_skb_priority(struct match *, uint32_t skb_priority);
void match_set_dl_type(struct match *, ovs_be16);
void match_set_dl_src(struct match *, const uint8_t[6]);
void match_set_dl_src_masked(struct match *, const uint8_t dl_src[6],
const uint8_t mask[6]);
void match_set_dl_dst(struct match *, const uint8_t[6]);
void match_set_dl_dst_masked(struct match *, const uint8_t dl_dst[6],
const uint8_t mask[6]);
void match_set_dl_tci(struct match *, ovs_be16 tci);
void match_set_dl_tci_masked(struct match *, ovs_be16 tci, ovs_be16 mask);
void match_set_any_vid(struct match *);
void match_set_dl_vlan(struct match *, ovs_be16);
void match_set_vlan_vid(struct match *, ovs_be16);
void match_set_vlan_vid_masked(struct match *, ovs_be16 vid, ovs_be16 mask);
void match_set_any_pcp(struct match *);
void match_set_dl_vlan_pcp(struct match *, uint8_t);
void match_set_tp_src(struct match *, ovs_be16);
void match_set_tp_src_masked(struct match *, ovs_be16 port, ovs_be16 mask);
void match_set_tp_dst(struct match *, ovs_be16);
void match_set_tp_dst_masked(struct match *, ovs_be16 port, ovs_be16 mask);
void match_set_nw_proto(struct match *, uint8_t);
void match_set_nw_src(struct match *, ovs_be32);
void match_set_nw_src_masked(struct match *, ovs_be32 ip, ovs_be32 mask);
void match_set_nw_dst(struct match *, ovs_be32);
void match_set_nw_dst_masked(struct match *, ovs_be32 ip, ovs_be32 mask);
void match_set_nw_dscp(struct match *, uint8_t);
void match_set_nw_ecn(struct match *, uint8_t);
void match_set_nw_ttl(struct match *, uint8_t);
void match_set_nw_frag(struct match *, uint8_t nw_frag);
void match_set_nw_frag_masked(struct match *, uint8_t nw_frag, uint8_t mask);
void match_set_icmp_type(struct match *, uint8_t);
void match_set_icmp_code(struct match *, uint8_t);
void match_set_arp_sha(struct match *, const uint8_t[6]);
void match_set_arp_sha_masked(struct match *,
const uint8_t arp_sha[6],
const uint8_t mask[6]);
void match_set_arp_tha(struct match *, const uint8_t[6]);
void match_set_arp_tha_masked(struct match *,
const uint8_t arp_tha[6],
const uint8_t mask[6]);
void match_set_ipv6_src(struct match *, const struct in6_addr *);
void match_set_ipv6_src_masked(struct match *, const struct in6_addr *,
const struct in6_addr *);
void match_set_ipv6_dst(struct match *, const struct in6_addr *);
void match_set_ipv6_dst_masked(struct match *, const struct in6_addr *,
const struct in6_addr *);
void match_set_ipv6_label(struct match *, ovs_be32);
void match_set_ipv6_label_masked(struct match *, ovs_be32, ovs_be32);
void match_set_nd_target(struct match *, const struct in6_addr *);
void match_set_nd_target_masked(struct match *, const struct in6_addr *,
const struct in6_addr *);
bool match_equal(const struct match *, const struct match *);
uint32_t match_hash(const struct match *, uint32_t basis);
void match_format(const struct match *, struct ds *, unsigned int priority);
char *match_to_string(const struct match *, unsigned int priority);
void match_print(const struct match *);
/* Compressed match. */
/* A sparse representation of a "struct match".
*
* This has the same invariant as "struct match", that is, a 1-bit in the
* 'flow' must correspond to a 1-bit in 'mask'.
*
* The invariants for the underlying miniflow and minimask are also maintained,
* which means that 'flow' and 'mask' can have different 'map's. In
* particular, if the match checks that a given 32-bit field has value 0, then
* 'map' will have a 1-bit in 'mask' but a 0-bit in 'flow' for that field. */
struct minimatch {
struct miniflow flow;
struct minimask mask;
};
void minimatch_init(struct minimatch *, const struct match *);
void minimatch_clone(struct minimatch *, const struct minimatch *);
void minimatch_destroy(struct minimatch *);
void minimatch_expand(const struct minimatch *, struct match *);
bool minimatch_equal(const struct minimatch *a, const struct minimatch *b);
uint32_t minimatch_hash(const struct minimatch *, uint32_t basis);
void minimatch_format(const struct minimatch *, struct ds *,
unsigned int priority);
char *minimatch_to_string(const struct minimatch *, unsigned int priority);
#endif /* match.h */
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