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contrib/dhcpcd/src/if.h
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/* SPDX-License-Identifier: BSD-2-Clause */ | |||||
/* | |||||
* dhcpcd - DHCP client daemon | |||||
* Copyright (c) 2006-2019 Roy Marples <roy@marples.name> | |||||
* All rights reserved | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#ifndef INTERFACE_H | |||||
#define INTERFACE_H | |||||
#include <net/if.h> | |||||
#include <net/route.h> /* for RTM_ADD et all */ | |||||
#include <netinet/in.h> | |||||
#ifdef BSD | |||||
#include <netinet/in_var.h> /* for IN_IFF_TENTATIVE et all */ | |||||
#endif | |||||
#include <ifaddrs.h> | |||||
/* Some systems have in-built IPv4 DAD. | |||||
* However, we need them to do DAD at carrier up as well. */ | |||||
#ifdef IN_IFF_TENTATIVE | |||||
# ifdef __NetBSD__ | |||||
# define NOCARRIER_PRESERVE_IP | |||||
# endif | |||||
#endif | |||||
/* | |||||
* Systems which handle 1 address per alias. | |||||
* Currenly this is just Solaris. | |||||
* While Linux can do aliased addresses, it is only useful for their | |||||
* legacy ifconfig(8) tool which cannot display >1 IPv4 address | |||||
* (it can display many IPv6 addresses which makes the limitation odd). | |||||
* Linux has ip(8) which is a more feature rich tool, without the above | |||||
* restriction. | |||||
*/ | |||||
#ifndef ALIAS_ADDR | |||||
# ifdef __sun | |||||
# define ALIAS_ADDR | |||||
# endif | |||||
#endif | |||||
#include "config.h" | |||||
#include "dhcpcd.h" | |||||
#include "ipv4.h" | |||||
#include "ipv6.h" | |||||
#include "route.h" | |||||
#define EUI64_ADDR_LEN 8 | |||||
#define INFINIBAND_ADDR_LEN 20 | |||||
/* Linux 2.4 doesn't define this */ | |||||
#ifndef ARPHRD_IEEE1394 | |||||
# define ARPHRD_IEEE1394 24 | |||||
#endif | |||||
/* The BSD's don't define this yet */ | |||||
#ifndef ARPHRD_INFINIBAND | |||||
# define ARPHRD_INFINIBAND 32 | |||||
#endif | |||||
/* Work out if we have a private address or not | |||||
* 10/8 | |||||
* 172.16/12 | |||||
* 192.168/16 | |||||
*/ | |||||
#ifndef IN_PRIVATE | |||||
# define IN_PRIVATE(addr) (((addr & IN_CLASSA_NET) == 0x0a000000) || \ | |||||
((addr & 0xfff00000) == 0xac100000) || \ | |||||
((addr & IN_CLASSB_NET) == 0xc0a80000)) | |||||
#endif | |||||
#ifndef CLLADDR | |||||
#ifdef AF_LINK | |||||
# define CLLADDR(sdl) (const void *)((sdl)->sdl_data + (sdl)->sdl_nlen) | |||||
#endif | |||||
#endif | |||||
#ifdef __sun | |||||
/* Solaris stupidly defines this for compat with BSD | |||||
* but then ignores it. */ | |||||
#undef RTF_CLONING | |||||
/* Solaris getifaddrs is very un-suitable for dhcpcd. | |||||
* See if-sun.c for details why. */ | |||||
struct ifaddrs; | |||||
int if_getifaddrs(struct ifaddrs **); | |||||
#define getifaddrs if_getifaddrs | |||||
int if_getsubnet(struct dhcpcd_ctx *, const char *, int, void *, size_t); | |||||
#endif | |||||
int if_getflags(struct interface *ifp); | |||||
int if_setflag(struct interface *ifp, short flag); | |||||
#define if_up(ifp) if_setflag((ifp), (IFF_UP | IFF_RUNNING)) | |||||
bool if_valid_hwaddr(const uint8_t *, size_t); | |||||
struct if_head *if_discover(struct dhcpcd_ctx *, struct ifaddrs **, | |||||
int, char * const *); | |||||
void if_markaddrsstale(struct if_head *); | |||||
void if_learnaddrs(struct dhcpcd_ctx *, struct if_head *, struct ifaddrs **); | |||||
void if_deletestaleaddrs(struct if_head *); | |||||
struct interface *if_find(struct if_head *, const char *); | |||||
struct interface *if_findindex(struct if_head *, unsigned int); | |||||
struct interface *if_loopback(struct dhcpcd_ctx *); | |||||
void if_free(struct interface *); | |||||
int if_domtu(const struct interface *, short int); | |||||
#define if_getmtu(ifp) if_domtu((ifp), 0) | |||||
#define if_setmtu(ifp, mtu) if_domtu((ifp), (mtu)) | |||||
int if_carrier(struct interface *); | |||||
#ifdef ALIAS_ADDR | |||||
int if_makealias(char *, size_t, const char *, int); | |||||
#endif | |||||
int if_mtu_os(const struct interface *); | |||||
/* | |||||
* Helper to decode an interface name of bge0:1 to | |||||
* devname = bge0, drvname = bge0, ppa = 0, lun = 1. | |||||
* If ppa or lun are invalid they are set to -1. | |||||
*/ | |||||
struct if_spec { | |||||
char ifname[IF_NAMESIZE]; | |||||
char devname[IF_NAMESIZE]; | |||||
char drvname[IF_NAMESIZE]; | |||||
int ppa; | |||||
int lun; | |||||
}; | |||||
int if_nametospec(const char *, struct if_spec *); | |||||
/* The below functions are provided by if-KERNEL.c */ | |||||
int if_conf(struct interface *); | |||||
int if_init(struct interface *); | |||||
int if_getssid(struct interface *); | |||||
bool if_ignore(struct dhcpcd_ctx *, const char *); | |||||
int if_vimaster(const struct dhcpcd_ctx *ctx, const char *); | |||||
unsigned short if_vlanid(const struct interface *); | |||||
int if_opensockets(struct dhcpcd_ctx *); | |||||
int if_opensockets_os(struct dhcpcd_ctx *); | |||||
void if_closesockets(struct dhcpcd_ctx *); | |||||
void if_closesockets_os(struct dhcpcd_ctx *); | |||||
int if_handlelink(struct dhcpcd_ctx *); | |||||
/* dhcpcd uses the same routing flags as BSD. | |||||
* If the platform doesn't use these flags, | |||||
* map them in the platform interace file. */ | |||||
#ifndef RTM_ADD | |||||
#define RTM_ADD 0x1 /* Add Route */ | |||||
#define RTM_DELETE 0x2 /* Delete Route */ | |||||
#define RTM_CHANGE 0x3 /* Change Metrics or flags */ | |||||
#define RTM_GET 0x4 /* Report Metrics */ | |||||
#endif | |||||
/* Define SOCK_CLOEXEC and SOCK_NONBLOCK for systems that lack it. | |||||
* xsocket() in if.c will map them to fctnl FD_CLOEXEC and O_NONBLOCK. */ | |||||
#ifdef SOCK_CLOEXEC | |||||
# define HAVE_SOCK_CLOEXEC | |||||
#else | |||||
# define SOCK_CLOEXEC 0x10000000 | |||||
#endif | |||||
#ifdef SOCK_NONBLOCK | |||||
# define HAVE_SOCK_NONBLOCK | |||||
#else | |||||
# define SOCK_NONBLOCK 0x20000000 | |||||
#endif | |||||
int if_route(unsigned char, const struct rt *rt); | |||||
int if_initrt(struct dhcpcd_ctx *, rb_tree_t *, int); | |||||
#ifdef INET | |||||
int if_address(unsigned char, const struct ipv4_addr *); | |||||
int if_addrflags(const struct interface *, const struct in_addr *, | |||||
const char *); | |||||
#endif | |||||
#ifdef INET6 | |||||
void if_setup_inet6(const struct interface *); | |||||
#ifdef IPV6_MANAGETEMPADDR | |||||
int ip6_use_tempaddr(const char *ifname); | |||||
int ip6_temp_preferred_lifetime(const char *ifname); | |||||
int ip6_temp_valid_lifetime(const char *ifname); | |||||
#else | |||||
#define ip6_use_tempaddr(a) (0) | |||||
#endif | |||||
int ip6_forwarding(const char *ifname); | |||||
int if_address6(unsigned char, const struct ipv6_addr *); | |||||
int if_addrflags6(const struct interface *, const struct in6_addr *, | |||||
const char *); | |||||
int if_getlifetime6(struct ipv6_addr *); | |||||
#else | |||||
#define if_checkipv6(a, b, c) (-1) | |||||
#endif | |||||
int if_machinearch(char *, size_t); | |||||
struct interface *if_findifpfromcmsg(struct dhcpcd_ctx *, | |||||
struct msghdr *, int *); | |||||
int xsocket(int, int, int); | |||||
#endif |