diff options
Diffstat (limited to 'dhcpcd/ipv6.h')
| -rw-r--r-- | dhcpcd/ipv6.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/dhcpcd/ipv6.h b/dhcpcd/ipv6.h new file mode 100644 index 00000000..6b5dc1df --- /dev/null +++ b/dhcpcd/ipv6.h @@ -0,0 +1,176 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright (c) 2006-2013 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 IPV6_H +#define IPV6_H + +#include <sys/queue.h> + +#include <netinet/in.h> + +#define ALLROUTERS "ff02::2" +#define HOPLIMIT 255 + +#define ROUNDUP8(a) (1 + (((a) - 1) | 7)) + +#ifndef ND6_INFINITE_LIFETIME +# define ND6_INFINITE_LIFETIME ((uint32_t)~0) +#endif + +/* + * BSD kernels don't inform userland of DAD results. + * Also, for RTM_NEWADDR messages the address flags could be + * undefined leading to false positive duplicate address errors. + * As such we listen for duplicate addresses on the wire and + * wait the maxium possible length of time as dictated by the DAD transmission + * counter and RFC timings. + * See the discussion here: + * http://mail-index.netbsd.org/tech-net/2013/03/15/msg004019.html + */ +#ifndef __linux__ +/* We guard here to avoid breaking a compile on linux ppc-64 headers */ +# include <sys/param.h> +#endif +#ifdef BSD +# define LISTEN_DAD +#endif + +/* This was fixed in NetBSD */ +#ifdef __NetBSD_Prereq__ +# if __NetBSD_Prereq__(6, 99, 20) +# undef LISTEN_DAD +# endif +#endif + +struct ipv6_addr { + TAILQ_ENTRY(ipv6_addr) next; + struct interface *iface; + struct in6_addr prefix; + int prefix_len; + uint32_t prefix_vltime; + uint32_t prefix_pltime; + struct in6_addr addr; + short flags; + char saddr[INET6_ADDRSTRLEN]; + uint8_t iaid[4]; + struct interface *delegating_iface; + + void (*dadcallback)(void *); + uint8_t *ns; + size_t nslen; + int nsprobes; +}; +TAILQ_HEAD(ipv6_addrhead, ipv6_addr); + +#define IPV6_AF_ONLINK 0x0001 +#define IPV6_AF_NEW 0x0002 +#define IPV6_AF_STALE 0x0004 +#define IPV6_AF_ADDED 0x0008 +#define IPV6_AF_AUTOCONF 0x0010 +#define IPV6_AF_DUPLICATED 0x0020 +#define IPV6_AF_DADCOMPLETED 0x0040 +#define IPV6_AF_DELEGATED 0x0080 + +struct rt6 { + TAILQ_ENTRY(rt6) next; + struct in6_addr dest; + struct in6_addr net; + struct in6_addr gate; + const struct interface *iface; + int metric; + unsigned int mtu; +}; +TAILQ_HEAD(rt6head, rt6); + +struct ipv6_addr_l { + TAILQ_ENTRY(ipv6_addr_l) next; + struct in6_addr addr; +}; + +TAILQ_HEAD(ipv6_addr_l_head, ipv6_addr_l); + +struct ll_callback { + TAILQ_ENTRY(ll_callback) next; + void (*callback)(void *); + void *arg; +}; +TAILQ_HEAD(ll_callback_head, ll_callback); + +struct ipv6_state { + struct ipv6_addr_l_head addrs; + struct ll_callback_head ll_callbacks; +}; + +#define IPV6_STATE(ifp) \ + ((struct ipv6_state *)(ifp)->if_data[IF_DATA_IPV6]) +#define IPV6_CSTATE(ifp) \ + ((const struct ipv6_state *)(ifp)->if_data[IF_DATA_IPV6]) + +#ifdef INET6 +int ipv6_init(void); +ssize_t ipv6_printaddr(char *, ssize_t, const uint8_t *, const char *); +int ipv6_makeaddr(struct in6_addr *, const struct interface *, + const struct in6_addr *, int); +int ipv6_makeprefix(struct in6_addr *, const struct in6_addr *, int); +int ipv6_mask(struct in6_addr *, int); +int ipv6_prefixlen(const struct in6_addr *); +int ipv6_userprefix( const struct in6_addr *, short prefix_len, + uint64_t user_number, struct in6_addr *result, short result_len); +int ipv6_addaddr(struct ipv6_addr *); +void ipv6_freedrop_addrs(struct ipv6_addrhead *, int, + const struct interface *); +void ipv6_handleifa(int, struct if_head *, + const char *, const struct in6_addr *, int); +int ipv6_handleifa_addrs(int, struct ipv6_addrhead *, + const struct in6_addr *, int); +const struct ipv6_addr_l *ipv6_linklocal(const struct interface *); +const struct ipv6_addr_l *ipv6_findaddr(const struct interface *, + const struct in6_addr *); +int ipv6_addlinklocalcallback(struct interface *, void (*)(void *), void *); +void ipv6_free_ll_callbacks(struct interface *); +void ipv6_free(struct interface *); +int ipv6_removesubnet(const struct interface *, struct ipv6_addr *); +void ipv6_buildroutes(void); + +int if_address6(const struct ipv6_addr *, int); +#define add_address6(a) if_address6(a, 1) +#define del_address6(a) if_address6(a, -1) +int in6_addr_flags(const char *, const struct in6_addr *); + +int if_route6(const struct rt6 *rt, int); +#define add_route6(rt) if_route6(rt, 1) +#define change_route6(rt) if_route6(rt, 0) +#define del_route6(rt) if_route6(rt, -1) +#define del_src_route6(rt) if_route6(rt, -2); + +#else +#define ipv6_init() -1 +#define ipv6_free_ll_callbacks(a) +#define ipv6_free(a) +#endif + +#endif |