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942bf97b | 1 | /* |
2 | * Zebra Policy Based Routing (PBR) Data structures and definitions | |
3 | * These are public definitions referenced by multiple files. | |
4 | * Copyright (C) 2018 Cumulus Networks, Inc. | |
5 | * | |
6 | * This file is part of FRR. | |
7 | * | |
8 | * FRR is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * FRR is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with FRR; see the file COPYING. If not, write to the Free | |
20 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
21 | * 02111-1307, USA. | |
22 | */ | |
23 | ||
24 | #ifndef _ZEBRA_PBR_H | |
25 | #define _ZEBRA_PBR_H | |
26 | ||
27 | #include <zebra.h> | |
28 | ||
29 | #include "prefix.h" | |
30 | #include "if.h" | |
b6c5d343 | 31 | |
942bf97b | 32 | #include "rt.h" |
5dd0722d | 33 | #include "pbr.h" |
942bf97b | 34 | |
5dd0722d PG |
35 | struct zebra_pbr_rule { |
36 | int sock; | |
7661461a | 37 | |
5dd0722d | 38 | struct pbr_rule rule; |
1907e4b8 | 39 | |
5dd0722d | 40 | struct interface *ifp; |
942bf97b | 41 | }; |
42 | ||
43 | #define IS_RULE_FILTERING_ON_SRC_IP(r) \ | |
5dd0722d | 44 | (r->rule.filter.filter_bm & PBR_FILTER_SRC_IP) |
942bf97b | 45 | #define IS_RULE_FILTERING_ON_DST_IP(r) \ |
5dd0722d | 46 | (r->rule.filter.filter_bm & PBR_FILTER_DST_IP) |
942bf97b | 47 | #define IS_RULE_FILTERING_ON_SRC_PORT(r) \ |
5dd0722d | 48 | (r->rule.filter.filter_bm & PBR_FILTER_SRC_PORT) |
942bf97b | 49 | #define IS_RULE_FILTERING_ON_DST_PORT(r) \ |
5dd0722d | 50 | (r->rule.filter.filter_bm & PBR_FILTER_DST_PORT) |
2bee7aae PG |
51 | #define IS_RULE_FILTERING_ON_FWMARK(r) \ |
52 | (r->rule.filter.filter_bm & PBR_FILTER_FWMARK) | |
7661461a PG |
53 | |
54 | /* | |
55 | * An IPSet Entry Filter | |
56 | * | |
57 | * This is a filter mapped on ipset entries | |
58 | */ | |
59 | struct zebra_pbr_ipset { | |
60 | /* | |
61 | * Originating zclient sock fd, so we can know who to send | |
62 | * back to. | |
63 | */ | |
64 | int sock; | |
65 | ||
be2028d1 PG |
66 | vrf_id_t vrf_id; |
67 | ||
7661461a PG |
68 | uint32_t unique; |
69 | ||
70 | /* type is encoded as uint32_t | |
71 | * but value is an enum ipset_type | |
72 | */ | |
73 | uint32_t type; | |
74 | char ipset_name[ZEBRA_IPSET_NAME_SIZE]; | |
75 | }; | |
76 | ||
77 | /* | |
78 | * An IPSet Entry Filter | |
79 | * | |
80 | * This is a filter mapped on ipset entries | |
81 | */ | |
82 | struct zebra_pbr_ipset_entry { | |
83 | /* | |
84 | * Originating zclient sock fd, so we can know who to send | |
85 | * back to. | |
86 | */ | |
87 | int sock; | |
88 | ||
89 | uint32_t unique; | |
90 | ||
91 | struct prefix src; | |
92 | struct prefix dst; | |
93 | ||
25d760c5 PG |
94 | uint16_t src_port_min; |
95 | uint16_t src_port_max; | |
96 | uint16_t dst_port_min; | |
97 | uint16_t dst_port_max; | |
98 | ||
99 | uint8_t proto; | |
100 | ||
7661461a PG |
101 | uint32_t filter_bm; |
102 | ||
103 | struct zebra_pbr_ipset *backpointer; | |
104 | }; | |
105 | ||
7abd6c4f PG |
106 | /* |
107 | * An IPTables Action | |
108 | * | |
109 | * This is a filter mapped on ipset entries | |
110 | */ | |
111 | struct zebra_pbr_iptable { | |
112 | /* | |
113 | * Originating zclient sock fd, so we can know who to send | |
114 | * back to. | |
115 | */ | |
116 | int sock; | |
117 | ||
be2028d1 PG |
118 | vrf_id_t vrf_id; |
119 | ||
7abd6c4f PG |
120 | uint32_t unique; |
121 | ||
122 | /* include ipset type | |
123 | */ | |
124 | uint32_t type; | |
125 | ||
126 | /* include which IP is to be filtered | |
127 | */ | |
128 | uint32_t filter_bm; | |
129 | ||
130 | uint32_t fwmark; | |
131 | ||
132 | uint32_t action; | |
133 | ||
134 | char ipset_name[ZEBRA_IPSET_NAME_SIZE]; | |
135 | }; | |
136 | ||
a0321978 DS |
137 | void zebra_pbr_add_rule(struct zebra_ns *zns, struct zebra_pbr_rule *rule); |
138 | void zebra_pbr_del_rule(struct zebra_ns *zns, struct zebra_pbr_rule *rule); | |
7661461a PG |
139 | void zebra_pbr_create_ipset(struct zebra_ns *zns, |
140 | struct zebra_pbr_ipset *ipset); | |
141 | void zebra_pbr_destroy_ipset(struct zebra_ns *zns, | |
142 | struct zebra_pbr_ipset *ipset); | |
d59c13af PG |
143 | struct zebra_pbr_ipset *zebra_pbr_lookup_ipset_pername(struct zebra_ns *zns, |
144 | char *ipsetname); | |
7661461a PG |
145 | void zebra_pbr_add_ipset_entry(struct zebra_ns *zns, |
146 | struct zebra_pbr_ipset_entry *ipset); | |
147 | void zebra_pbr_del_ipset_entry(struct zebra_ns *zns, | |
148 | struct zebra_pbr_ipset_entry *ipset); | |
942bf97b | 149 | |
7abd6c4f PG |
150 | void zebra_pbr_add_iptable(struct zebra_ns *zns, |
151 | struct zebra_pbr_iptable *iptable); | |
152 | void zebra_pbr_del_iptable(struct zebra_ns *zns, | |
153 | struct zebra_pbr_iptable *iptable); | |
154 | ||
942bf97b | 155 | /* |
156 | * Install specified rule for a specific interface. | |
157 | * It is possible that the user-defined sequence number and the one in the | |
158 | * forwarding plane may not coincide, hence the API requires a separate | |
159 | * rule priority - maps to preference/FRA_PRIORITY on Linux. | |
160 | */ | |
a0321978 | 161 | extern void kernel_add_pbr_rule(struct zebra_pbr_rule *rule); |
942bf97b | 162 | |
163 | /* | |
164 | * Uninstall specified rule for a specific interface. | |
165 | */ | |
a0321978 | 166 | extern void kernel_del_pbr_rule(struct zebra_pbr_rule *rule); |
942bf97b | 167 | |
168 | /* | |
169 | * Get to know existing PBR rules in the kernel - typically called at startup. | |
170 | */ | |
171 | extern void kernel_read_pbr_rules(struct zebra_ns *zns); | |
172 | ||
b6c5d343 | 173 | enum southbound_results; |
942bf97b | 174 | /* |
175 | * Handle success or failure of rule (un)install in the kernel. | |
176 | */ | |
177 | extern void kernel_pbr_rule_add_del_status(struct zebra_pbr_rule *rule, | |
942bf97b | 178 | enum southbound_results res); |
179 | ||
425bdd6b PG |
180 | /* |
181 | * Handle success or failure of ipset kinds (un)install in the kernel. | |
182 | */ | |
183 | extern void kernel_pbr_ipset_add_del_status(struct zebra_pbr_ipset *ipset, | |
184 | enum southbound_results res); | |
185 | ||
186 | extern void kernel_pbr_ipset_entry_add_del_status( | |
187 | struct zebra_pbr_ipset_entry *ipset, | |
188 | enum southbound_results res); | |
189 | ||
7abd6c4f PG |
190 | extern void kernel_pbr_iptable_add_del_status(struct zebra_pbr_iptable *iptable, |
191 | enum southbound_results res); | |
192 | ||
942bf97b | 193 | /* |
194 | * Handle rule delete notification from kernel. | |
195 | */ | |
a0321978 | 196 | extern int kernel_pbr_rule_del(struct zebra_pbr_rule *rule); |
942bf97b | 197 | |
43fe6a2a DS |
198 | extern void zebra_pbr_rules_free(void *arg); |
199 | extern uint32_t zebra_pbr_rules_hash_key(void *arg); | |
200 | extern int zebra_pbr_rules_hash_equal(const void *arg1, const void *arg2); | |
e69aa084 | 201 | |
425bdd6b PG |
202 | /* has operates on 32bit pointer |
203 | * and field is a string of 8bit | |
204 | */ | |
205 | #define ZEBRA_IPSET_NAME_HASH_SIZE (ZEBRA_IPSET_NAME_SIZE / 4) | |
206 | ||
7661461a PG |
207 | extern void zebra_pbr_ipset_free(void *arg); |
208 | extern uint32_t zebra_pbr_ipset_hash_key(void *arg); | |
209 | extern int zebra_pbr_ipset_hash_equal(const void *arg1, const void *arg2); | |
210 | ||
211 | extern void zebra_pbr_ipset_entry_free(void *arg); | |
212 | extern uint32_t zebra_pbr_ipset_entry_hash_key(void *arg); | |
213 | extern int zebra_pbr_ipset_entry_hash_equal(const void *arg1, const void *arg2); | |
214 | ||
7abd6c4f PG |
215 | extern void zebra_pbr_iptable_free(void *arg); |
216 | extern uint32_t zebra_pbr_iptable_hash_key(void *arg); | |
217 | extern int zebra_pbr_iptable_hash_equal(const void *arg1, const void *arg2); | |
218 | ||
4c0ec639 | 219 | extern void zebra_pbr_init(void); |
586f4ccf PG |
220 | extern void zebra_pbr_show_ipset_list(struct vty *vty, char *ipsetname); |
221 | extern void zebra_pbr_show_iptable(struct vty *vty); | |
222 | ||
942bf97b | 223 | #endif /* _ZEBRA_PBR_H */ |