e963960681
for talking to the server and for setting the interface address and route. However, otherwise it is quite different, since we need to be working under the assumptions that there is no stable storage on a rump instance, and that there are n networking stacks on a given host.
157 lines
5.1 KiB
C
157 lines
5.1 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2010 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef INTERFACE_H
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#define INTERFACE_H
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <limits.h>
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#include "dhcp.h"
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#include "dhcpcd.h"
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#ifndef DUID_LEN
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# define DUID_LEN 128 + 2
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#endif
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#define EUI64_ADDR_LEN 8
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#define INFINIBAND_ADDR_LEN 20
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/* Linux 2.4 doesn't define this */
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#ifndef ARPHRD_IEEE1394
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# define ARPHRD_IEEE1394 24
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#endif
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/* The BSD's don't define this yet */
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#ifndef ARPHRD_INFINIBAND
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# define ARPHRD_INFINIBAND 32
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#endif
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/* Work out if we have a private address or not
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* 10/8
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* 172.16/12
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* 192.168/16
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*/
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#ifndef IN_PRIVATE
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# define IN_PRIVATE(addr) (((addr & IN_CLASSA_NET) == 0x0a000000) || \
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((addr & 0xfff00000) == 0xac100000) || \
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((addr & IN_CLASSB_NET) == 0xc0a80000))
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#endif
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#define LINKLOCAL_ADDR 0xa9fe0000
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#define LINKLOCAL_MASK IN_CLASSB_NET
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#define LINKLOCAL_BRDC (LINKLOCAL_ADDR | ~LINKLOCAL_MASK)
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#ifndef IN_LINKLOCAL
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# define IN_LINKLOCAL(addr) ((addr & IN_CLASSB_NET) == LINKLOCAL_ADDR)
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#endif
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struct rt {
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struct in_addr dest;
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struct in_addr net;
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struct in_addr gate;
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const struct interface *iface;
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struct rt *next;
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};
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extern int socket_afnet;
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uint32_t get_netmask(uint32_t);
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char *hwaddr_ntoa(const unsigned char *, size_t);
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size_t hwaddr_aton(unsigned char *, const char *);
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int getifssid(const char *, char *);
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struct interface *init_interface(const char *);
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struct interface *discover_interfaces(int, char * const *);
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void free_interface(struct interface *);
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int do_mtu(const char *, short int);
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#define get_mtu(iface) do_mtu(iface, 0)
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#define set_mtu(iface, mtu) do_mtu(iface, mtu)
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int inet_ntocidr(struct in_addr);
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int inet_cidrtoaddr(int, struct in_addr *);
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int up_interface(struct interface *);
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int if_conf(struct interface *);
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int if_init(struct interface *);
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int do_address(const char *,
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struct in_addr *, struct in_addr *, struct in_addr *, int);
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int if_address(const struct interface *,
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const struct in_addr *, const struct in_addr *,
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const struct in_addr *, int);
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#define add_address(iface, addr, net, brd) \
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if_address(iface, addr, net, brd, 1)
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#define del_address(iface, addr, net) \
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if_address(iface, addr, net, NULL, -1)
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#define has_address(iface, addr, net) \
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do_address(iface, addr, net, NULL, 0)
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#define get_address(iface, addr, net, dst) \
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do_address(iface, addr, net, dst, 1)
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int if_route(const struct interface *, const struct in_addr *,
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const struct in_addr *, const struct in_addr *, int, int);
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#define add_route(iface, dest, mask, gate, metric) \
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if_route(iface, dest, mask, gate, metric, 1)
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#define change_route(iface, dest, mask, gate, metric) \
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if_route(iface, dest, mask, gate, metric, 0)
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#define del_route(iface, dest, mask, gate, metric) \
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if_route(iface, dest, mask, gate, metric, -1)
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#define del_src_route(iface, dest, mask, gate, metric) \
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if_route(iface, dest, mask, gate, metric, -2)
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void free_routes(struct rt *);
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int open_udp_socket(struct interface *);
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extern const size_t udp_dhcp_len;
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ssize_t make_udp_packet(uint8_t **, const uint8_t *, size_t,
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struct in_addr, struct in_addr);
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ssize_t get_udp_data(const uint8_t **, const uint8_t *);
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int valid_udp_packet(const uint8_t *, size_t, struct in_addr *);
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int open_socket(struct interface *, int);
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ssize_t send_packet(const struct interface *, struct in_addr,
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const uint8_t *, ssize_t);
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ssize_t send_raw_packet(const struct interface *, int,
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const void *, ssize_t);
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ssize_t get_raw_packet(struct interface *, int, void *, ssize_t);
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int init_sockets(void);
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int open_link_socket(void);
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int manage_link(int);
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int carrier_status(struct interface *);
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int get_hwaddr(struct interface *);
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#endif
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