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         /* route specifies no device */
  56         DEVROUTE_NODEV          = (1 << 12),
  57 };
  58
  59 union if_addr {
  60         struct in_addr in;
  61         struct in6_addr in6;
  62 };
  63
  64 struct device_prefix_assignment {
  65         struct list_head head;
  66         int32_t assigned;
  67         uint8_t length;
  68         int weight;
  69         struct in6_addr addr;
  70         bool enabled;
  71         char name[];
  72 };
  73
  74 struct device_prefix {
  75         struct vlist_node node;
  76         struct list_head head;
  77         struct list_head assignments;
  78         struct interface *iface;
  79         time_t valid_until;
  80         time_t preferred_until;
  81
  82         struct in6_addr excl_addr;
  83         uint8_t excl_length;
  84
  85         struct in6_addr addr;
  86         uint8_t length;
  87
  88         char pclass[];
  89 };
  90
  91 struct device_route {
  92         struct vlist_node node;
  93         struct interface *iface;
  94
  95         bool enabled;
  96         bool keep;
  97         bool failed;
  98
  99         union if_addr nexthop;
 100         int mtu;
 101         unsigned int type;
 102         unsigned int proto;
 103         time_t valid_until;
 104
 105         /* must be last */
 106         enum device_addr_flags flags;
 107         int metric; /* there can be multiple routes to the same target */
 108         unsigned int table;
 109         unsigned int mask;
 110         unsigned int sourcemask;
 111         union if_addr addr;
 112         union if_addr source;
 113 };
 114
 115 struct device_neighbor {
 116         struct vlist_node node;
 117
 118         bool failed;
 119         bool proxy;
 120         bool keep;
 121         bool enabled;
 122         bool router;
 123
 124         uint8_t macaddr[6];
 125         enum device_addr_flags flags;
 126         union if_addr addr;
 127 };
 128
 129 struct device_addr {
 130         struct vlist_node node;
 131         bool enabled;
 132         bool failed;
 133         int index;
 134         unsigned int policy_table;
 135
 136         struct device_route subnet;
 137
 138         /* ipv4 only */
 139         uint32_t broadcast;
 140         uint32_t point_to_point;
 141
 142         /* ipv6 only */
 143         time_t valid_until;
 144         time_t preferred_until;
 145         char *pclass;
 146
 147         /* must be last */
 148         enum device_addr_flags flags;
 149         unsigned int mask;
 150         union if_addr addr;
 151 };
 152
 153 struct device_source_table {
 154         struct list_head head;
 155         uint32_t table;
 156         uint16_t refcount;
 157         uint8_t v6;
 158         uint8_t mask;
 159         union if_addr addr;
 160 };
 161
 162 struct dns_server {
 163         struct vlist_simple_node node;
 164         int af;
 165         union if_addr addr;
 166 };
 167
 168 struct dns_search_domain {
 169         struct vlist_simple_node node;
 170         char name[];
 171 };
 172
 173 extern const struct uci_blob_param_list route_attr_list;
 174 extern const struct uci_blob_param_list neighbor_attr_list;
 175 extern struct list_head prefixes;
 176
 177 void interface_ip_init(struct interface *iface);
 178 void interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list);
 179 void interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list);
 180 void interface_write_resolv_conf(const char *jail);
 181
 182 void interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6);
 183 void interface_ip_add_neighbor(struct interface *iface, struct blob_attr *attr, bool v6);
 184 void interface_ip_update_start(struct interface_ip_settings *ip);
 185 void interface_ip_update_complete(struct interface_ip_settings *ip);
 186 void interface_ip_flush(struct interface_ip_settings *ip);
 187 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
 188 void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
 189
 190 struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface,
 191                                                 bool exclude);
 192
 193 struct device_prefix* interface_ip_add_device_prefix(struct interface *iface,
 194                 struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until,
 195                 struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass);
 196 void interface_ip_set_ula_prefix(const char *prefix);
 197 void interface_refresh_assignments(bool hint);
 198 void interface_update_prefix_delegation(struct interface_ip_settings *ip);
 199
 200 #endif