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09246b99 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2010, 2011, 2012 Nicira, Inc. |
09246b99 BP |
3 | * |
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: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
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. | |
15 | */ | |
16 | ||
17 | #ifndef NX_MATCH_H | |
18 | #define NX_MATCH_H 1 | |
19 | ||
20 | #include <stdint.h> | |
c979df05 BP |
21 | #include <sys/types.h> |
22 | #include <netinet/in.h> | |
e9358af6 | 23 | #include "flow.h" |
f25d0cf3 | 24 | #include "ofp-errors.h" |
c979df05 | 25 | #include "openvswitch/types.h" |
09246b99 | 26 | |
f393f81e | 27 | struct ds; |
81a76618 | 28 | struct match; |
816fd533 | 29 | struct mf_subfield; |
f25d0cf3 BP |
30 | struct ofpact_reg_move; |
31 | struct ofpact_reg_load; | |
bd85dac1 | 32 | struct ofpact_stack; |
09246b99 | 33 | struct ofpbuf; |
b6c9e612 BP |
34 | struct nx_action_reg_load; |
35 | struct nx_action_reg_move; | |
09246b99 | 36 | |
bd85dac1 | 37 | |
09246b99 BP |
38 | /* Nicira Extended Match (NXM) flexible flow match helper functions. |
39 | * | |
40 | * See include/openflow/nicira-ext.h for NXM specification. | |
41 | */ | |
42 | ||
90bf1e07 | 43 | enum ofperr nx_pull_match(struct ofpbuf *, unsigned int match_len, |
81a76618 | 44 | struct match *, |
90bf1e07 BP |
45 | ovs_be64 *cookie, ovs_be64 *cookie_mask); |
46 | enum ofperr nx_pull_match_loose(struct ofpbuf *, unsigned int match_len, | |
81a76618 | 47 | struct match *, ovs_be64 *cookie, |
7623f4dd | 48 | ovs_be64 *cookie_mask); |
81a76618 BP |
49 | enum ofperr oxm_pull_match(struct ofpbuf *, struct match *); |
50 | enum ofperr oxm_pull_match_loose(struct ofpbuf *, struct match *); | |
51 | int nx_put_match(struct ofpbuf *, const struct match *, | |
e729e793 | 52 | ovs_be64 cookie, ovs_be64 cookie_mask); |
81a76618 | 53 | int oxm_put_match(struct ofpbuf *, const struct match *); |
09246b99 BP |
54 | |
55 | char *nx_match_to_string(const uint8_t *, unsigned int match_len); | |
7623f4dd | 56 | char *oxm_match_to_string(const uint8_t *, unsigned int match_len); |
09246b99 | 57 | int nx_match_from_string(const char *, struct ofpbuf *); |
7623f4dd | 58 | int oxm_match_from_string(const char *, struct ofpbuf *); |
09246b99 | 59 | |
f25d0cf3 BP |
60 | void nxm_parse_reg_move(struct ofpact_reg_move *, const char *); |
61 | void nxm_parse_reg_load(struct ofpact_reg_load *, const char *); | |
62 | ||
63 | void nxm_format_reg_move(const struct ofpact_reg_move *, struct ds *); | |
64 | void nxm_format_reg_load(const struct ofpact_reg_load *, struct ds *); | |
f393f81e | 65 | |
f25d0cf3 BP |
66 | enum ofperr nxm_reg_move_from_openflow(const struct nx_action_reg_move *, |
67 | struct ofpbuf *ofpacts); | |
68 | enum ofperr nxm_reg_load_from_openflow(const struct nx_action_reg_load *, | |
69 | struct ofpbuf *ofpacts); | |
0291c1c6 SH |
70 | enum ofperr nxm_reg_load_from_openflow12_set_field( |
71 | const struct ofp12_action_set_field * oasf, struct ofpbuf *ofpacts); | |
f393f81e | 72 | |
f25d0cf3 | 73 | enum ofperr nxm_reg_move_check(const struct ofpact_reg_move *, |
816fd533 | 74 | const struct flow *); |
f25d0cf3 | 75 | enum ofperr nxm_reg_load_check(const struct ofpact_reg_load *, |
90bf1e07 | 76 | const struct flow *); |
b6c9e612 | 77 | |
f25d0cf3 BP |
78 | void nxm_reg_move_to_nxast(const struct ofpact_reg_move *, |
79 | struct ofpbuf *openflow); | |
80 | void nxm_reg_load_to_nxast(const struct ofpact_reg_load *, | |
81 | struct ofpbuf *openflow); | |
82 | ||
83 | void nxm_execute_reg_move(const struct ofpact_reg_move *, struct flow *); | |
84 | void nxm_execute_reg_load(const struct ofpact_reg_load *, struct flow *); | |
85 | void nxm_reg_load(const struct mf_subfield *, uint64_t src_data, | |
86 | struct flow *); | |
b6c9e612 | 87 | |
bd85dac1 AZ |
88 | void nxm_parse_stack_action(struct ofpact_stack *, const char *); |
89 | ||
90 | void nxm_format_stack_push(const struct ofpact_stack *, struct ds *); | |
91 | void nxm_format_stack_pop(const struct ofpact_stack *, struct ds *); | |
92 | ||
93 | enum ofperr nxm_stack_push_from_openflow(const struct nx_action_stack *, | |
94 | struct ofpbuf *ofpacts); | |
95 | enum ofperr nxm_stack_pop_from_openflow(const struct nx_action_stack *, | |
96 | struct ofpbuf *ofpacts); | |
97 | enum ofperr nxm_stack_push_check(const struct ofpact_stack *, | |
98 | const struct flow *); | |
99 | enum ofperr nxm_stack_pop_check(const struct ofpact_stack *, | |
100 | const struct flow *); | |
101 | ||
102 | void nxm_stack_push_to_nxast(const struct ofpact_stack *, | |
103 | struct ofpbuf *openflow); | |
104 | void nxm_stack_pop_to_nxast(const struct ofpact_stack *, | |
105 | struct ofpbuf *openflow); | |
106 | ||
107 | void nxm_execute_stack_push(const struct ofpact_stack *, | |
108 | const struct flow *, struct ofpbuf *); | |
109 | void nxm_execute_stack_pop(const struct ofpact_stack *, | |
110 | struct flow *, struct ofpbuf *); | |
111 | ||
4291acd2 BP |
112 | int nxm_field_bytes(uint32_t header); |
113 | int nxm_field_bits(uint32_t header); | |
114 | ||
816fd533 | 115 | /* Dealing with the 'ofs_nbits' members in several Nicira extensions. */ |
c979df05 BP |
116 | |
117 | static inline ovs_be16 | |
118 | nxm_encode_ofs_nbits(int ofs, int n_bits) | |
119 | { | |
120 | return htons((ofs << 6) | (n_bits - 1)); | |
121 | } | |
122 | ||
123 | static inline int | |
124 | nxm_decode_ofs(ovs_be16 ofs_nbits) | |
125 | { | |
126 | return ntohs(ofs_nbits) >> 6; | |
127 | } | |
128 | ||
129 | static inline int | |
130 | nxm_decode_n_bits(ovs_be16 ofs_nbits) | |
131 | { | |
132 | return (ntohs(ofs_nbits) & 0x3f) + 1; | |
133 | } | |
134 | \f | |
2e4f5fcf BP |
135 | /* This is my guess at the length of a "typical" nx_match, for use in |
136 | * predicting space requirements. */ | |
137 | #define NXM_TYPICAL_LEN 64 | |
138 | ||
09246b99 | 139 | #endif /* nx-match.h */ |