mirror of
https://github.com/rsmarples/dhcpcd.git
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e83c4813f3
While here, drop the flags argument from the ifa routines. Instead, grab it in the main ifa handler - it was only for IPv6 addresses in Linux anyway.
127 lines
4.4 KiB
C
127 lines
4.4 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2015 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 IPV6ND_H
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#define IPV6ND_H
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#include <time.h>
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#include "config.h"
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#include "dhcpcd.h"
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#include "ipv6.h"
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struct ra {
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TAILQ_ENTRY(ra) next;
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struct interface *iface;
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struct in6_addr from;
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char sfrom[INET6_ADDRSTRLEN];
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uint8_t *data;
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size_t data_len;
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struct timespec acquired;
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unsigned char flags;
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uint32_t lifetime;
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uint32_t reachable;
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uint32_t retrans;
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uint32_t mtu;
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struct ipv6_addrhead addrs;
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uint8_t hasdns;
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uint8_t expired;
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};
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TAILQ_HEAD(ra_head, ra);
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struct rs_state {
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unsigned char *rs;
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size_t rslen;
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int rsprobes;
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};
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#define RS_STATE(a) ((struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND])
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#define RS_STATE_RUNNING(a) (ipv6nd_hasra((a)) && ipv6nd_dadcompleted((a)))
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#define ND_CFIRST_OPTION(m) \
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((const struct nd_opt_hdr *) \
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((const uint8_t *)(m)->data + sizeof(struct nd_router_advert)))
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#define ND_OPTION_LEN(o) ((size_t)((o)->nd_opt_len * 8) - \
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sizeof(struct nd_opt_hdr))
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#define ND_CNEXT_OPTION(o) \
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((const struct nd_opt_hdr *)((const uint8_t *)(o) + \
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(size_t)((o)->nd_opt_len * 8)))
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#define ND_COPTION_DATA(o) \
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((const uint8_t *)(o) + sizeof(struct nd_opt_hdr))
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#define MAX_RTR_SOLICITATION_DELAY 1 /* seconds */
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#define MAX_UNICAST_SOLICIT 3 /* 3 transmissions */
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#define RTR_SOLICITATION_INTERVAL 4 /* seconds */
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#define MAX_RTR_SOLICITATIONS 3 /* times */
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/* On carrier up, expire known routers after RTR_CARRIER_EXPIRE seconds. */
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#define RTR_CARRIER_EXPIRE \
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(MAX_RTR_SOLICITATION_DELAY + \
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(MAX_RTR_SOLICITATIONS + 1) * \
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RTR_SOLICITATION_INTERVAL)
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#define MAX_REACHABLE_TIME 3600000 /* milliseconds */
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#define REACHABLE_TIME 30000 /* milliseconds */
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#define RETRANS_TIMER 1000 /* milliseconds */
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#define DELAY_FIRST_PROBE_TIME 5 /* seconds */
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#define IPV6ND_REACHABLE (1 << 0)
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#define IPV6ND_ROUTER (1 << 1)
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#ifdef INET6
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void ipv6nd_printoptions(const struct dhcpcd_ctx *,
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const struct dhcp_opt *, size_t);
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void ipv6nd_startrs(struct interface *);
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ssize_t ipv6nd_env(char **, const char *, const struct interface *);
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const struct ipv6_addr *ipv6nd_iffindaddr(const struct interface *ifp,
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const struct in6_addr *addr, short flags);
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struct ipv6_addr *ipv6nd_findaddr(struct dhcpcd_ctx *,
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const struct in6_addr *, short);
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void ipv6nd_freedrop_ra(struct ra *, int);
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#define ipv6nd_free_ra(ra) ipv6nd_freedrop_ra((ra), 0)
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#define ipv6nd_drop_ra(ra) ipv6nd_freedrop_ra((ra), 1)
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ssize_t ipv6nd_free(struct interface *);
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void ipv6nd_expirera(void *arg);
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int ipv6nd_hasra(const struct interface *);
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int ipv6nd_hasradhcp(const struct interface *);
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void ipv6nd_handleifa(int, struct ipv6_addr *);
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int ipv6nd_dadcompleted(const struct interface *);
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void ipv6nd_expire(struct interface *, uint32_t);
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void ipv6nd_drop(struct interface *);
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void ipv6nd_neighbour(struct dhcpcd_ctx *, struct in6_addr *, int);
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#else
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#define ipv6nd_startrs(a) {}
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#define ipv6nd_free(a) {}
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#define ipv6nd_hasra(a) (0)
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#define ipv6nd_dadcompleted(a) (0)
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#define ipv6nd_drop(a) {}
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#define ipv6nd_expire(a, b) {}
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#endif
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#endif
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