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git.proxmox.com Git - ovs.git/blob - lib/match.h
2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
24 /* A flow classification match.
26 * Use one of the match_*() functions to initialize a "struct match".
28 * The match_*() functions below maintain the following important invariant.
29 * If a bit or a field is wildcarded in 'wc', then the corresponding bit or
30 * field in 'flow' is set to all-0-bits. (The match_zero_wildcarded_fields()
31 * function can be used to restore this invariant after adding wildcards.) */
34 struct flow_wildcards wc
;
37 void match_init(struct match
*,
38 const struct flow
*, const struct flow_wildcards
*);
39 void match_wc_init(struct match
*match
, const struct flow
*flow
);
40 void match_init_catchall(struct match
*);
41 void match_init_exact(struct match
*, const struct flow
*);
43 void match_zero_wildcarded_fields(struct match
*);
45 void match_set_reg(struct match
*, unsigned int reg_idx
, uint32_t value
);
46 void match_set_reg_masked(struct match
*, unsigned int reg_idx
,
47 uint32_t value
, uint32_t mask
);
48 void match_set_metadata(struct match
*, ovs_be64 metadata
);
49 void match_set_metadata_masked(struct match
*,
50 ovs_be64 metadata
, ovs_be64 mask
);
51 void match_set_tun_id(struct match
*, ovs_be64 tun_id
);
52 void match_set_tun_id_masked(struct match
*, ovs_be64 tun_id
, ovs_be64 mask
);
53 void match_set_tun_src(struct match
*match
, ovs_be32 src
);
54 void match_set_tun_src_masked(struct match
*match
, ovs_be32 src
, ovs_be32 mask
);
55 void match_set_tun_dst(struct match
*match
, ovs_be32 dst
);
56 void match_set_tun_dst_masked(struct match
*match
, ovs_be32 dst
, ovs_be32 mask
);
57 void match_set_tun_ttl(struct match
*match
, uint8_t ttl
);
58 void match_set_tun_ttl_masked(struct match
*match
, uint8_t ttl
, uint8_t mask
);
59 void match_set_tun_tos(struct match
*match
, uint8_t tos
);
60 void match_set_tun_tos_masked(struct match
*match
, uint8_t tos
, uint8_t mask
);
61 void match_set_tun_flags(struct match
*match
, uint16_t flags
);
62 void match_set_tun_flags_masked(struct match
*match
, uint16_t flags
, uint16_t mask
);
63 void match_set_in_port(struct match
*, uint16_t ofp_port
);
64 void match_set_skb_mark(struct match
*, uint32_t skb_mark
);
65 void match_set_skb_priority(struct match
*, uint32_t skb_priority
);
66 void match_set_dl_type(struct match
*, ovs_be16
);
67 void match_set_dl_src(struct match
*, const uint8_t[6]);
68 void match_set_dl_src_masked(struct match
*, const uint8_t dl_src
[6],
69 const uint8_t mask
[6]);
70 void match_set_dl_dst(struct match
*, const uint8_t[6]);
71 void match_set_dl_dst_masked(struct match
*, const uint8_t dl_dst
[6],
72 const uint8_t mask
[6]);
73 void match_set_dl_tci(struct match
*, ovs_be16 tci
);
74 void match_set_dl_tci_masked(struct match
*, ovs_be16 tci
, ovs_be16 mask
);
75 void match_set_any_vid(struct match
*);
76 void match_set_dl_vlan(struct match
*, ovs_be16
);
77 void match_set_vlan_vid(struct match
*, ovs_be16
);
78 void match_set_vlan_vid_masked(struct match
*, ovs_be16 vid
, ovs_be16 mask
);
79 void match_set_any_pcp(struct match
*);
80 void match_set_dl_vlan_pcp(struct match
*, uint8_t);
81 void match_set_any_mpls_label(struct match
*);
82 void match_set_mpls_label(struct match
*, ovs_be32
);
83 void match_set_any_mpls_tc(struct match
*);
84 void match_set_mpls_tc(struct match
*, uint8_t);
85 void match_set_any_mpls_bos(struct match
*);
86 void match_set_mpls_bos(struct match
*, uint8_t);
87 void match_set_tp_src(struct match
*, ovs_be16
);
88 void match_set_tp_src_masked(struct match
*, ovs_be16 port
, ovs_be16 mask
);
89 void match_set_tp_dst(struct match
*, ovs_be16
);
90 void match_set_tp_dst_masked(struct match
*, ovs_be16 port
, ovs_be16 mask
);
91 void match_set_nw_proto(struct match
*, uint8_t);
92 void match_set_nw_src(struct match
*, ovs_be32
);
93 void match_set_nw_src_masked(struct match
*, ovs_be32 ip
, ovs_be32 mask
);
94 void match_set_nw_dst(struct match
*, ovs_be32
);
95 void match_set_nw_dst_masked(struct match
*, ovs_be32 ip
, ovs_be32 mask
);
96 void match_set_nw_dscp(struct match
*, uint8_t);
97 void match_set_nw_ecn(struct match
*, uint8_t);
98 void match_set_nw_ttl(struct match
*, uint8_t);
99 void match_set_nw_frag(struct match
*, uint8_t nw_frag
);
100 void match_set_nw_frag_masked(struct match
*, uint8_t nw_frag
, uint8_t mask
);
101 void match_set_icmp_type(struct match
*, uint8_t);
102 void match_set_icmp_code(struct match
*, uint8_t);
103 void match_set_arp_sha(struct match
*, const uint8_t[6]);
104 void match_set_arp_sha_masked(struct match
*,
105 const uint8_t arp_sha
[6],
106 const uint8_t mask
[6]);
107 void match_set_arp_tha(struct match
*, const uint8_t[6]);
108 void match_set_arp_tha_masked(struct match
*,
109 const uint8_t arp_tha
[6],
110 const uint8_t mask
[6]);
111 void match_set_ipv6_src(struct match
*, const struct in6_addr
*);
112 void match_set_ipv6_src_masked(struct match
*, const struct in6_addr
*,
113 const struct in6_addr
*);
114 void match_set_ipv6_dst(struct match
*, const struct in6_addr
*);
115 void match_set_ipv6_dst_masked(struct match
*, const struct in6_addr
*,
116 const struct in6_addr
*);
117 void match_set_ipv6_label(struct match
*, ovs_be32
);
118 void match_set_ipv6_label_masked(struct match
*, ovs_be32
, ovs_be32
);
119 void match_set_nd_target(struct match
*, const struct in6_addr
*);
120 void match_set_nd_target_masked(struct match
*, const struct in6_addr
*,
121 const struct in6_addr
*);
123 bool match_equal(const struct match
*, const struct match
*);
124 uint32_t match_hash(const struct match
*, uint32_t basis
);
126 void match_format(const struct match
*, struct ds
*, unsigned int priority
);
127 char *match_to_string(const struct match
*, unsigned int priority
);
128 void match_print(const struct match
*);
130 /* Compressed match. */
132 /* A sparse representation of a "struct match".
134 * This has the same invariant as "struct match", that is, a 1-bit in the
135 * 'flow' must correspond to a 1-bit in 'mask'.
137 * The invariants for the underlying miniflow and minimask are also maintained,
138 * which means that 'flow' and 'mask' can have different 'map's. In
139 * particular, if the match checks that a given 32-bit field has value 0, then
140 * 'map' will have a 1-bit in 'mask' but a 0-bit in 'flow' for that field. */
142 struct miniflow flow
;
143 struct minimask mask
;
146 void minimatch_init(struct minimatch
*, const struct match
*);
147 void minimatch_clone(struct minimatch
*, const struct minimatch
*);
148 void minimatch_destroy(struct minimatch
*);
150 void minimatch_expand(const struct minimatch
*, struct match
*);
152 bool minimatch_equal(const struct minimatch
*a
, const struct minimatch
*b
);
153 uint32_t minimatch_hash(const struct minimatch
*, uint32_t basis
);
155 void minimatch_format(const struct minimatch
*, struct ds
*,
156 unsigned int priority
);
157 char *minimatch_to_string(const struct minimatch
*, unsigned int priority
);