interface-ip.h

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #ifndef __INTERFACE_IP_H
  15 #define __INTERFACE_IP_H
  16
  17 #include "interface.h"
  18
  19 enum device_addr_flags {
  20         /* address family for routes and addresses */
  21         DEVADDR_INET4           = (0 << 0),
  22         DEVADDR_INET6           = (1 << 0),
  23         DEVADDR_FAMILY          = DEVADDR_INET4 | DEVADDR_INET6,
  24
  25         /* externally added address */
  26         DEVADDR_EXTERNAL        = (1 << 2),
  27
  28         /* route overrides the default interface metric */
  29         DEVROUTE_METRIC         = (1 << 3),
  30
  31         /* route overrides the default interface mtu */
  32         DEVROUTE_MTU            = (1 << 4),
  33
  34         /* route overrides the default proto type */
  35         DEVROUTE_PROTO          = (1 << 5),
  36
  37         /* address is off-link (no subnet-route) */
  38         DEVADDR_OFFLINK         = (1 << 6),
  39
  40         /* route resides in different table */
  41         DEVROUTE_TABLE          = (1 << 7),
  42
  43         /* route resides in default source-route table */
  44         DEVROUTE_SRCTABLE       = (1 << 8),
  45
  46         /* route is on-link */
  47         DEVROUTE_ONLINK         = (1 << 9),
  48
  49         /* route overrides the default route type */
  50         DEVROUTE_TYPE           = (1 << 10),
  51
  52         /* neighbor mac address */
  53         DEVNEIGH_MAC            = (1 << 11),
  54 };
  55
  56 union if_addr {
  57         struct in_addr in;
  58         struct in6_addr in6;
  59 };
  60
  61 struct device_prefix_assignment {
  62         struct list_head head;
  63         int32_t assigned;
  64         uint8_t length;
  65         int weight;
  66         struct in6_addr addr;
  67         bool enabled;
  68         char name[];
  69 };
  70
  71 struct device_prefix {
  72         struct vlist_node node;
  73         struct list_head head;
  74         struct list_head assignments;
  75         struct interface *iface;
  76         time_t valid_until;
  77         time_t preferred_until;
  78
  79         struct in6_addr excl_addr;
  80         uint8_t excl_length;
  81
  82         struct in6_addr addr;
  83         uint8_t length;
  84
  85         char pclass[];
  86 };
  87
  88 struct device_route {
  89         struct vlist_node node;
  90         struct interface *iface;
  91
  92         bool enabled;
  93         bool keep;
  94         bool failed;
  95
  96         union if_addr nexthop;
  97         int mtu;
  98         unsigned int type;
  99         unsigned int proto;
 100         time_t valid_until;
 101
 102         /* must be last */
 103         enum device_addr_flags flags;
 104         int metric; /* there can be multiple routes to the same target */
 105         unsigned int table;
 106         unsigned int mask;
 107         unsigned int sourcemask;
 108         union if_addr addr;
 109         union if_addr source;
 110 };
 111
 112 struct device_neighbor {
 113         struct vlist_node node;
 114
 115         bool failed;
 116         bool proxy;
 117         bool keep;
 118         bool enabled;
 119         bool router;
 120
 121         uint8_t macaddr[6];
 122         enum device_addr_flags flags;
 123         union if_addr addr;
 124 };
 125
 126 struct device_addr {
 127         struct vlist_node node;
 128         bool enabled;
 129         bool failed;
 130         int index;
 131         unsigned int policy_table;
 132
 133         struct device_route subnet;
 134
 135         /* ipv4 only */
 136         uint32_t broadcast;
 137         uint32_t point_to_point;
 138
 139         /* ipv6 only */
 140         time_t valid_until;
 141         time_t preferred_until;
 142         char *pclass;
 143
 144         /* must be last */
 145         enum device_addr_flags flags;
 146         unsigned int mask;
 147         union if_addr addr;
 148 };
 149
 150 struct device_source_table {
 151         struct list_head head;
 152         uint32_t table;
 153         uint16_t refcount;
 154         uint8_t v6;
 155         uint8_t mask;
 156         union if_addr addr;
 157 };
 158
 159 struct dns_server {
 160         struct vlist_simple_node node;
 161         int af;
 162         union if_addr addr;
 163 };
 164
 165 struct dns_search_domain {
 166         struct vlist_simple_node node;
 167         char name[];
 168 };
 169
 170 extern const struct uci_blob_param_list route_attr_list;
 171 extern const struct uci_blob_param_list neighbor_attr_list;
 172 extern struct list_head prefixes;
 173
 174 void interface_ip_init(struct interface *iface);
 175 void interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list);
 176 void interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list);
 177 void interface_write_resolv_conf(const char *jail);
 178
 179 void interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6);
 180 void interface_ip_add_neighbor(struct interface *iface, struct blob_attr *attr, bool v6);
 181 void interface_ip_update_start(struct interface_ip_settings *ip);
 182 void interface_ip_update_complete(struct interface_ip_settings *ip);
 183 void interface_ip_flush(struct interface_ip_settings *ip);
 184 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
 185 void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
 186
 187 struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface);
 188
 189 struct device_prefix* interface_ip_add_device_prefix(struct interface *iface,
 190                 struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until,
 191                 struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass);
 192 void interface_ip_set_ula_prefix(const char *prefix);
 193 void interface_refresh_assignments(bool hint);
 194 void interface_update_prefix_delegation(struct interface_ip_settings *ip);
 195
 196 #endif