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 automatically added by kernel */
  35         DEVADDR_KERNEL          = (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
  50 union if_addr {
  51         struct in_addr in;
  52         struct in6_addr in6;
  53 };
  54
  55 struct device_prefix_assignment {
  56         struct list_head head;
  57         int32_t assigned;
  58         uint8_t length;
  59         bool enabled;
  60         char name[];
  61 };
  62
  63 struct device_prefix {
  64         struct vlist_node node;
  65         struct list_head head;
  66         struct list_head assignments;
  67         struct interface *iface;
  68         time_t valid_until;
  69         time_t preferred_until;
  70
  71         struct in6_addr excl_addr;
  72         uint8_t excl_length;
  73
  74         struct in6_addr addr;
  75         uint8_t length;
  76
  77         char pclass[];
  78 };
  79
  80 struct device_addr {
  81         struct vlist_node node;
  82         bool enabled;
  83         bool failed;
  84
  85         /* ipv4 only */
  86         uint32_t broadcast;
  87         uint32_t point_to_point;
  88
  89         /* ipv6 only */
  90         time_t valid_until;
  91         time_t preferred_until;
  92         char *pclass;
  93
  94         /* must be last */
  95         enum device_addr_flags flags;
  96         unsigned int mask;
  97         union if_addr addr;
  98 };
  99
 100 struct device_route {
 101         struct vlist_node node;
 102         struct interface *iface;
 103
 104         bool enabled;
 105         bool keep;
 106         bool failed;
 107
 108         union if_addr nexthop;
 109         int mtu;
 110         time_t valid_until;
 111
 112         /* must be last */
 113         enum device_addr_flags flags;
 114         int metric; // there can be multiple routes to the same target
 115         unsigned int table;
 116         unsigned int mask;
 117         unsigned int sourcemask;
 118         union if_addr addr;
 119         union if_addr source;
 120 };
 121
 122 struct device_source_table {
 123         struct list_head head;
 124         uint32_t table;
 125         uint16_t refcount;
 126         uint8_t v6;
 127         uint8_t mask;
 128         union if_addr addr;
 129 };
 130
 131 struct dns_server {
 132         struct vlist_simple_node node;
 133         int af;
 134         union if_addr addr;
 135 };
 136
 137 struct dns_search_domain {
 138         struct vlist_simple_node node;
 139         char name[];
 140 };
 141
 142 extern const struct uci_blob_param_list route_attr_list;
 143 extern struct list_head prefixes;
 144
 145 void interface_ip_init(struct interface *iface);
 146 void interface_add_dns_server(struct interface_ip_settings *ip, const char *str);
 147 void interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list);
 148 void interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list);
 149 void interface_write_resolv_conf(void);
 150
 151 void interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6);
 152
 153 void interface_ip_update_start(struct interface_ip_settings *ip);
 154 void interface_ip_update_complete(struct interface_ip_settings *ip);
 155 void interface_ip_flush(struct interface_ip_settings *ip);
 156 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
 157 void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
 158
 159 struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface);
 160
 161 struct device_prefix* interface_ip_add_device_prefix(struct interface *iface,
 162                 struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until,
 163                 struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass);
 164 void interface_ip_set_ula_prefix(const char *prefix);
 165 void interface_refresh_assignments(bool hint);
 166
 167 #endif