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contrib/dhcpcd/src/ipv6nd.h
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| /* SPDX-License-Identifier: BSD-2-Clause */ | |||||
| /* | |||||
| * dhcpcd - IPv6 ND handling | |||||
| * 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 IPV6ND_H | |||||
| #define IPV6ND_H | |||||
| #ifdef INET6 | |||||
| #include <time.h> | |||||
| #include "config.h" | |||||
| #include "dhcpcd.h" | |||||
| #include "ipv6.h" | |||||
| struct ra { | |||||
| TAILQ_ENTRY(ra) next; | |||||
| struct interface *iface; | |||||
| struct in6_addr from; | |||||
| char sfrom[INET6_ADDRSTRLEN]; | |||||
| uint8_t *data; | |||||
| size_t data_len; | |||||
| struct timespec acquired; | |||||
| unsigned char flags; | |||||
| uint32_t lifetime; | |||||
| uint32_t reachable; | |||||
| uint32_t retrans; | |||||
| uint32_t mtu; | |||||
| struct ipv6_addrhead addrs; | |||||
| bool hasdns; | |||||
| bool expired; | |||||
| bool isreachable; | |||||
| }; | |||||
| TAILQ_HEAD(ra_head, ra); | |||||
| struct rs_state { | |||||
| struct nd_router_solicit *rs; | |||||
| size_t rslen; | |||||
| int rsprobes; | |||||
| uint32_t retrans; | |||||
| #ifdef __sun | |||||
| int nd_fd; | |||||
| #endif | |||||
| }; | |||||
| #define RS_STATE(a) ((struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND]) | |||||
| #define RS_CSTATE(a) ((const struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND]) | |||||
| #define RS_STATE_RUNNING(a) (ipv6nd_hasra((a)) && ipv6nd_dadcompleted((a))) | |||||
| #ifndef MAX_RTR_SOLICITATION_DELAY | |||||
| #define MAX_RTR_SOLICITATION_DELAY 1 /* seconds */ | |||||
| #define MAX_UNICAST_SOLICIT 3 /* 3 transmissions */ | |||||
| #define RTR_SOLICITATION_INTERVAL 4 /* seconds */ | |||||
| #define MAX_RTR_SOLICITATIONS 3 /* times */ | |||||
| #define MAX_NEIGHBOR_ADVERTISEMENT 3 /* 3 transmissions */ | |||||
| #endif | |||||
| /* On carrier up, expire known routers after RTR_CARRIER_EXPIRE seconds. */ | |||||
| #define RTR_CARRIER_EXPIRE \ | |||||
| (MAX_RTR_SOLICITATION_DELAY + \ | |||||
| (MAX_RTR_SOLICITATIONS + 1) * \ | |||||
| RTR_SOLICITATION_INTERVAL) | |||||
| #define MAX_REACHABLE_TIME 3600000 /* milliseconds */ | |||||
| #define REACHABLE_TIME 30000 /* milliseconds */ | |||||
| #define RETRANS_TIMER 1000 /* milliseconds */ | |||||
| #define DELAY_FIRST_PROBE_TIME 5 /* seconds */ | |||||
| void ipv6nd_printoptions(const struct dhcpcd_ctx *, | |||||
| const struct dhcp_opt *, size_t); | |||||
| void ipv6nd_startrs(struct interface *); | |||||
| ssize_t ipv6nd_env(FILE *, const struct interface *); | |||||
| const struct ipv6_addr *ipv6nd_iffindaddr(const struct interface *ifp, | |||||
| const struct in6_addr *addr, unsigned int flags); | |||||
| struct ipv6_addr *ipv6nd_findaddr(struct dhcpcd_ctx *, | |||||
| const struct in6_addr *, unsigned int); | |||||
| ssize_t ipv6nd_free(struct interface *); | |||||
| void ipv6nd_expirera(void *arg); | |||||
| bool ipv6nd_hasralifetime(const struct interface *, bool); | |||||
| #define ipv6nd_hasra(i) ipv6nd_hasralifetime((i), false) | |||||
| bool ipv6nd_hasradhcp(const struct interface *); | |||||
| void ipv6nd_handleifa(int, struct ipv6_addr *, pid_t); | |||||
| int ipv6nd_dadcompleted(const struct interface *); | |||||
| void ipv6nd_advertise(struct ipv6_addr *); | |||||
| void ipv6nd_startexpire(struct interface *); | |||||
| void ipv6nd_drop(struct interface *); | |||||
| void ipv6nd_neighbour(struct dhcpcd_ctx *, struct in6_addr *, bool); | |||||
| #endif /* INET6 */ | |||||
| #endif /* IPV6ND_H */ | |||||