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
  38 union if_addr {
  39         struct in_addr in;
  40         struct in6_addr in6;
  41 };
  42
  43 struct device_prefix {
  44         struct vlist_node node;
  45         struct list_head head;
  46         struct vlist_tree *assignments;
  47         struct interface *iface;
  48         uint64_t avail;
  49         time_t valid_until;
  50         time_t preferred_until;
  51
  52         struct in6_addr addr;
  53         uint8_t length;
  54 };
  55
  56 struct device_prefix_assignment {
  57         struct vlist_node node;
  58         struct device_prefix *prefix;
  59         struct in6_addr addr;
  60         bool enabled;
  61         uint8_t length;
  62         char *name;
  63 };
  64
  65 struct device_addr {
  66         struct vlist_node node;
  67         bool enabled;
  68
  69         /* ipv4 only */
  70         uint32_t broadcast;
  71         uint32_t point_to_point;
  72
  73         /* ipv6 only */
  74         time_t valid_until;
  75         time_t preferred_until;
  76
  77         /* must be last */
  78         enum device_addr_flags flags;
  79         unsigned int mask;
  80         union if_addr addr;
  81 };
  82
  83 struct device_route {
  84         struct vlist_node node;
  85         struct interface *iface;
  86
  87         bool enabled;
  88         bool keep;
  89
  90         union if_addr nexthop;
  91         int metric;
  92         int mtu;
  93
  94         /* must be last */
  95         enum device_addr_flags flags;
  96         unsigned int mask;
  97         union if_addr addr;
  98 };
  99
 100 struct dns_server {
 101         struct vlist_simple_node node;
 102         int af;
 103         union if_addr addr;
 104 };
 105
 106 struct dns_search_domain {
 107         struct vlist_simple_node node;
 108         char name[];
 109 };
 110
 111 extern const struct config_param_list route_attr_list;
 112 extern struct list_head prefixes;
 113
 114 void interface_ip_init(struct interface *iface);
 115 void interface_add_dns_server(struct interface_ip_settings *ip, const char *str);
 116 void interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list);
 117 void interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list);
 118 void interface_write_resolv_conf(void);
 119
 120 void interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6);
 121
 122 void interface_ip_update_start(struct interface_ip_settings *ip);
 123 void interface_ip_update_complete(struct interface_ip_settings *ip);
 124 void interface_ip_flush(struct interface_ip_settings *ip);
 125 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
 126 void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
 127
 128 struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6);
 129
 130 void interface_ip_set_prefix_assignment(struct device_prefix *prefix,
 131                 struct interface *iface, uint8_t length);
 132 void interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr,
 133                 uint8_t length, time_t valid_until, time_t preferred_until);
 134 void interface_ip_set_ula_prefix(const char *prefix);
 135
 136 #endif