2 * Copyright (C) 2012-2013 Steven Barth <steven@midlink.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License v2 as published by
6 * the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
16 #include <netinet/in.h>
17 #include <netinet/icmp6.h>
18 #include <netinet/ether.h>
23 #include "libubox/blobmsg.h"
26 #define typeof __typeof
30 #define container_of(ptr, type, member) ( \
31 (type *)( (char *)ptr - offsetof(type,member) ))
34 #include "libubox/list.h"
35 #include "libubox/uloop.h"
37 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
39 // RFC 6106 defines this router advertisement option
40 #define ND_OPT_ROUTE_INFO 24
41 #define ND_OPT_RECURSIVE_DNS 25
42 #define ND_OPT_DNS_SEARCH 31
44 #define RELAYD_BUFFER_SIZE 8192
45 #define RELAYD_MAX_PREFIXES 8
47 #define _unused __attribute__((unused))
48 #define _packed __attribute__((packed))
51 #define ALL_IPV6_NODES {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
52 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}}
54 #define ALL_IPV6_ROUTERS {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
55 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}}}
59 extern struct list_head leases
;
62 struct uloop_fd uloop
;
63 void (*handle_dgram
)(void *addr
, void *data
, size_t len
,
64 struct interface
*iface
);
68 struct odhcpd_ipaddr
{
91 struct list_head head
;
92 struct in_addr ipaddr
;
94 struct ether_addr mac
;
102 struct list_head head
;
105 char ifname
[IF_NAMESIZE
];
106 char name
[IF_NAMESIZE
];
110 struct uloop_timeout timer_rs
;
111 struct list_head ia_assignments
;
112 struct odhcpd_ipaddr ia_addr
[8];
117 struct odhcpd_event dhcpv4_event
;
118 struct list_head dhcpv4_assignments
;
122 enum odhcpd_mode dhcpv6
;
123 enum odhcpd_mode ndp
;
124 enum odhcpd_mode dhcpv4
;
130 bool always_rewrite_dns
;
131 bool deprecate_ula_if_public_avail
;
133 bool no_dynamic_dhcp
;
138 int route_preference
;
141 struct in_addr dhcpv4_start
;
142 struct in_addr dhcpv4_end
;
143 struct in_addr
*dhcpv4_dns
;
144 size_t dhcpv4_dns_cnt
;
145 uint32_t dhcpv4_leasetime
;
148 struct in6_addr
*dns
;
154 size_t static_ndp_len
;
160 extern struct list_head interfaces
;
162 #define RELAYD_MANAGED_MFLAG 1
163 #define RELAYD_MANAGED_NO_AFLAG 2
166 // Exported main functions
167 int odhcpd_open_rtnl(void);
168 int odhcpd_register(struct odhcpd_event
*event
);
170 ssize_t
odhcpd_send(int socket
, struct sockaddr_in6
*dest
,
171 struct iovec
*iov
, size_t iov_len
,
172 const struct interface
*iface
);
173 ssize_t
odhcpd_get_interface_addresses(int ifindex
,
174 struct odhcpd_ipaddr
*addrs
, size_t cnt
);
175 struct interface
* odhcpd_get_interface_by_name(const char *name
);
176 int odhcpd_get_interface_mtu(const char *ifname
);
177 int odhcpd_get_mac(const struct interface
*iface
, uint8_t mac
[6]);
178 struct interface
* odhcpd_get_interface_by_index(int ifindex
);
179 struct interface
* odhcpd_get_master_interface(void);
180 void odhcpd_urandom(void *data
, size_t len
);
181 void odhcpd_setup_route(const struct in6_addr
*addr
, int prefixlen
,
182 const struct interface
*iface
, const struct in6_addr
*gw
, bool add
);
184 void odhcpd_run(void);
185 time_t odhcpd_time(void);
186 ssize_t
odhcpd_unhexlify(uint8_t *dst
, size_t len
, const char *src
);
187 void odhcpd_hexlify(char *dst
, const uint8_t *src
, size_t len
);
189 int config_parse_interface(struct blob_attr
*b
, const char *iname
, bool overwrite
);
191 const char* ubus_get_ifname(const char *name
);
192 void ubus_apply_network(void);
195 // Exported module initializers
196 int init_router(void);
197 int init_dhcpv6(void);
198 int init_dhcpv4(void);
202 int setup_router_interface(struct interface
*iface
, bool enable
);
203 int setup_dhcpv6_interface(struct interface
*iface
, bool enable
);
204 int setup_ndp_interface(struct interface
*iface
, bool enable
);
205 int setup_dhcpv4_interface(struct interface
*iface
, bool enable
);