hg/dhcpcd: src/ipv4ll.c annotate

annotate src/ipv4ll.c @ 5535:a0d828e25482 draft

Add --noconfigure option With this set dhcpcd will not configure anything on the host. The expectation is that a 3rd party script will instead.

author	Roy Marples <roy@marples.name>
date	Wed, 04 Nov 2020 14:18:48 +0000
parents	30603cb789ea
children	4fe5c2a71254

rev	line source
4548 c7df03794de3 Add SPDX identifiers to all dhcpcd source files. Yegor Yefremov <yegorslists@googlemail.com> parents: 4522 diff changeset	1 /* SPDX-License-Identifier: BSD-2-Clause */
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	2 /*
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	3 * dhcpcd - DHCP client daemon
4922 555d7d1a4939 Welcome to 2020! Roy Marples <roy@marples.name> parents: 4840 diff changeset	4 * Copyright (c) 2006-2020 Roy Marples <roy@marples.name>
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	5 * All rights reserved
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	6
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	7 * Redistribution and use in source and binary forms, with or without
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	8 * modification, are permitted provided that the following conditions
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	9 * are met:
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	10 * 1. Redistributions of source code must retain the above copyright
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	11 * notice, this list of conditions and the following disclaimer.
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	12 * 2. Redistributions in binary form must reproduce the above copyright
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	13 * notice, this list of conditions and the following disclaimer in the
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	14 * documentation and/or other materials provided with the distribution.
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	15 *
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	26 * SUCH DAMAGE.
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	27 */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	28
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	29 #include <arpa/inet.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	30
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	31 #include <assert.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	32 #include <errno.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	33 #include <stdbool.h>
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	34 #include <stdio.h>
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	35 #include <stdlib.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	36 #include <string.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	37 #include <unistd.h>
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	38
5038 1e35e845790a eloop: define eloop queue numbers in common.h Roy Marples <roy@marples.name> parents: 4922 diff changeset	39 #define ELOOP_QUEUE IPV4LL
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	40 #include "config.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	41 #include "arp.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	42 #include "common.h"
4555 93b4eb29d297 DHCP: Set address vltime and pltime to the length of the lease Roy Marples <roy@marples.name> parents: 4549 diff changeset	43 #include "dhcp.h"
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	44 #include "eloop.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	45 #include "if.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	46 #include "if-options.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	47 #include "ipv4.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	48 #include "ipv4ll.h"
4010 746684127581 logerr: errx with logging Roy Marples <roy@marples.name> parents: 3960 diff changeset	49 #include "logerr.h"
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	50 #include "sa.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	51 #include "script.h"
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	52
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	53 static const struct in_addr inaddr_llmask = {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	54 .s_addr = HTONL(LINKLOCAL_MASK)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	55 };
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	56 static const struct in_addr inaddr_llbcast = {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	57 .s_addr = HTONL(LINKLOCAL_BCAST)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	58 };
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	59
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	60 static void
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	61 ipv4ll_pickaddr(struct interface *ifp)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	62 {
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	63 struct in_addr addr = { .s_addr = 0 };
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	64 struct ipv4ll_state *state;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	65
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	66 state = IPV4LL_STATE(ifp);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	67 setstate(state->randomstate);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	68
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	69 do {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	70 long r;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	71
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	72 again:
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	73 /* RFC 3927 Section 2.1 states that the first 256 and
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	74 * last 256 addresses are reserved for future use.
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	75 * See ipv4ll_start for why we don't use arc4random. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	76 /* coverity[dont_call] */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	77 r = random();
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	78 addr.s_addr = ntohl(LINKLOCAL_ADDR \|
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	79 ((uint32_t)(r % 0xFD00) + 0x0100));
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	80
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	81 /* No point using a failed address */
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	82 if (IN_ARE_ADDR_EQUAL(&addr, &state->pickedaddr))
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	83 goto again;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	84 /* Ensure we don't have the address on another interface */
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	85 } while (ipv4_findaddr(ifp->ctx, &addr) != NULL);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	86
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	87 /* Restore the original random state */
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	88 setstate(ifp->ctx->randomstate);
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	89 state->pickedaddr = addr;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	90 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	91
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	92 int
4380 2dd0bc4f135b IPv4LL: Fix compile with rbtree Roy Marples <roy@marples.name> parents: 4341 diff changeset	93 ipv4ll_subnetroute(rb_tree_t routes, struct interface ifp)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	94 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	95 struct ipv4ll_state *state;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	96 struct rt *rt;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	97 struct in_addr in;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	98
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	99 assert(ifp != NULL);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	100 if ((state = IPV4LL_STATE(ifp)) == NULL \|\|
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	101 state->addr == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	102 return 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	103
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	104 if ((rt = rt_new(ifp)) == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	105 return -1;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	106
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	107 in.s_addr = state->addr->addr.s_addr & state->addr->mask.s_addr;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	108 sa_in_init(&rt->rt_dest, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	109 in.s_addr = state->addr->mask.s_addr;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	110 sa_in_init(&rt->rt_netmask, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	111 in.s_addr = INADDR_ANY;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	112 sa_in_init(&rt->rt_gateway, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	113 sa_in_init(&rt->rt_ifa, &state->addr->addr);
5407 30603cb789ea Fix prior Roy Marples <roy@marples.name> parents: 5406 diff changeset	114 rt->rt_dflags \|= RTDF_IPV4LL;
4522 e2582c7c7e1d route: Use order from message / config Roy Marples <roy@marples.name> parents: 4512 diff changeset	115 return rt_proto_add(routes, rt) ? 1 : 0;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	116 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	117
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	118 int
4380 2dd0bc4f135b IPv4LL: Fix compile with rbtree Roy Marples <roy@marples.name> parents: 4341 diff changeset	119 ipv4ll_defaultroute(rb_tree_t routes, struct interface ifp)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	120 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	121 struct ipv4ll_state *state;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	122 struct rt *rt;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	123 struct in_addr in;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	124
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	125 assert(ifp != NULL);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	126 if ((state = IPV4LL_STATE(ifp)) == NULL \|\|
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	127 state->addr == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	128 return 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	129
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	130 if ((rt = rt_new(ifp)) == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	131 return -1;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	132
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	133 in.s_addr = INADDR_ANY;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	134 sa_in_init(&rt->rt_dest, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	135 sa_in_init(&rt->rt_netmask, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	136 sa_in_init(&rt->rt_gateway, &in);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	137 sa_in_init(&rt->rt_ifa, &state->addr->addr);
5407 30603cb789ea Fix prior Roy Marples <roy@marples.name> parents: 5406 diff changeset	138 rt->rt_dflags \|= RTDF_IPV4LL;
5406 c03103d18249 route: Ensure IPv4LL routes always come last in priority Roy Marples <roy@marples.name> parents: 5352 diff changeset	139 #ifdef HAVE_ROUTE_METRIC
c03103d18249 route: Ensure IPv4LL routes always come last in priority Roy Marples <roy@marples.name> parents: 5352 diff changeset	140 rt->rt_metric += 10000;
c03103d18249 route: Ensure IPv4LL routes always come last in priority Roy Marples <roy@marples.name> parents: 5352 diff changeset	141 #endif
4522 e2582c7c7e1d route: Use order from message / config Roy Marples <roy@marples.name> parents: 4512 diff changeset	142 return rt_proto_add(routes, rt) ? 1 : 0;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	143 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	144
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	145 ssize_t
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	146 ipv4ll_env(FILE fp, const char prefix, const struct interface *ifp)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	147 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	148 const struct ipv4ll_state *state;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	149 const char *pf = prefix == NULL ? "" : "_";
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	150 struct in_addr netnum;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	151
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	152 assert(ifp != NULL);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	153 if ((state = IPV4LL_CSTATE(ifp)) == NULL \|\| state->addr == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	154 return 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	155
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	156 /* Emulate a DHCP environment */
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	157 if (efprintf(fp, "%s%sip_address=%s",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	158 prefix, pf, inet_ntoa(state->addr->addr)) == -1)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	159 return -1;
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	160 if (efprintf(fp, "%s%ssubnet_mask=%s",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	161 prefix, pf, inet_ntoa(state->addr->mask)) == -1)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	162 return -1;
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	163 if (efprintf(fp, "%s%ssubnet_cidr=%d",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	164 prefix, pf, inet_ntocidr(state->addr->mask)) == -1)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	165 return -1;
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	166 if (efprintf(fp, "%s%sbroadcast_address=%s",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	167 prefix, pf, inet_ntoa(state->addr->brd)) == -1)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	168 return -1;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	169 netnum.s_addr = state->addr->addr.s_addr & state->addr->mask.s_addr;
4535 f2ddefe6c69e script: Write variables to a FILE Roy Marples <roy@marples.name> parents: 4522 diff changeset	170 if (efprintf(fp, "%s%snetwork_number=%s",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	171 prefix, pf, inet_ntoa(netnum)) == -1)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	172 return -1;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	173 return 5;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	174 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	175
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	176 static void
4457 8e41e487831d Linux: Fix compile Roy Marples <roy@marples.name> parents: 4453 diff changeset	177 ipv4ll_announced_arp(struct arp_state *astate)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	178 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	179 struct ipv4ll_state *state = IPV4LL_STATE(astate->iface);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	180
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	181 state->conflicts = 0;
5352 599c75a0ac56 IPv4LL: free the arp state once announced for RFC 5227 kernels Roy Marples <roy@marples.name> parents: 5239 diff changeset	182 #ifdef KERNEL_RFC5227
599c75a0ac56 IPv4LL: free the arp state once announced for RFC 5227 kernels Roy Marples <roy@marples.name> parents: 5239 diff changeset	183 arp_free(astate);
599c75a0ac56 IPv4LL: free the arp state once announced for RFC 5227 kernels Roy Marples <roy@marples.name> parents: 5239 diff changeset	184 #endif
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	185 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	186
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	187 #ifndef KERNEL_RFC5227
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	188 /* This is the callback by ARP freeing */
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	189 static void
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	190 ipv4ll_free_arp(struct arp_state *astate)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	191 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	192 struct ipv4ll_state *state;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	193
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	194 state = IPV4LL_STATE(astate->iface);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	195 if (state != NULL && state->arp == astate)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	196 state->arp = NULL;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	197 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	198
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	199 /* This is us freeing any ARP state */
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	200 static void
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	201 ipv4ll_freearp(struct interface *ifp)
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	202 {
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	203 struct ipv4ll_state *state;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	204
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	205 state = IPV4LL_STATE(ifp);
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	206 if (state == NULL \|\| state->arp == NULL)
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	207 return;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	208
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	209 eloop_timeout_delete(ifp->ctx->eloop, NULL, state->arp);
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	210 arp_free(state->arp);
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	211 state->arp = NULL;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	212 }
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	213 #else
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	214 #define ipv4ll_freearp(ifp)
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	215 #endif
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	216
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	217 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	218 ipv4ll_not_found(struct interface *ifp)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	219 {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	220 struct ipv4ll_state *state;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	221 struct ipv4_addr *ia;
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	222 struct arp_state *astate;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	223
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	224 state = IPV4LL_STATE(ifp);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	225 ia = ipv4_iffindaddr(ifp, &state->pickedaddr, &inaddr_llmask);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	226 #ifdef IN_IFF_NOTREADY
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	227 if (ia == NULL \|\| ia->addr_flags & IN_IFF_NOTREADY)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	228 #endif
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	229 loginfox("%s: using IPv4LL address %s",
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	230 ifp->name, inet_ntoa(state->pickedaddr));
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	231 if (!(ifp->options->options & DHCPCD_CONFIGURE))
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	232 goto run;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	233 if (ia == NULL) {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	234 if (ifp->ctx->options & DHCPCD_TEST)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	235 goto test;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	236 ia = ipv4_addaddr(ifp, &state->pickedaddr,
4555 93b4eb29d297 DHCP: Set address vltime and pltime to the length of the lease Roy Marples <roy@marples.name> parents: 4549 diff changeset	237 &inaddr_llmask, &inaddr_llbcast,
93b4eb29d297 DHCP: Set address vltime and pltime to the length of the lease Roy Marples <roy@marples.name> parents: 4549 diff changeset	238 DHCP_INFINITE_LIFETIME, DHCP_INFINITE_LIFETIME);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	239 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	240 if (ia == NULL)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	241 return;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	242 #ifdef IN_IFF_NOTREADY
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	243 if (ia->addr_flags & IN_IFF_NOTREADY)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	244 return;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	245 logdebugx("%s: DAD completed for %s", ifp->name, ia->saddr);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	246 #endif
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	247
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	248 test:
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	249 state->addr = ia;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	250 state->down = false;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	251 if (ifp->ctx->options & DHCPCD_TEST) {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	252 script_runreason(ifp, "TEST");
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	253 eloop_exit(ifp->ctx->eloop, EXIT_SUCCESS);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	254 return;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	255 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	256 rt_build(ifp->ctx, AF_INET);
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	257 run:
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	258 astate = arp_announceaddr(ifp->ctx, &ia->addr);
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	259 if (astate != NULL)
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	260 astate->announced_cb = ipv4ll_announced_arp;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	261 script_runreason(ifp, "IPV4LL");
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	262 dhcpcd_daemonise(ifp->ctx);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	263 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	264
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	265 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	266 ipv4ll_found(struct interface *ifp)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	267 {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	268 struct ipv4ll_state *state = IPV4LL_STATE(ifp);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	269
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	270 ipv4ll_freearp(ifp);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	271 if (++state->conflicts == MAX_CONFLICTS)
4733 8faf08ef0f93 IPv4LL: Ensure we pick another address on DAD conflict via ARP Roy Marples <roy@marples.name> parents: 4579 diff changeset	272 logerrx("%s: failed to acquire an IPv4LL address",
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	273 ifp->name);
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	274 ipv4ll_pickaddr(ifp);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	275 eloop_timeout_add_sec(ifp->ctx->eloop,
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	276 state->conflicts >= MAX_CONFLICTS ?
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	277 RATE_LIMIT_INTERVAL : PROBE_WAIT,
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	278 ipv4ll_start, ifp);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	279 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	280
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	281 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	282 ipv4ll_defend_failed(struct interface *ifp)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	283 {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	284 struct ipv4ll_state *state = IPV4LL_STATE(ifp);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	285
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	286 ipv4ll_freearp(ifp);
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	287 if (ifp->options->options & DHCPCD_CONFIGURE)
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	288 ipv4_deladdr(state->addr, 1);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	289 state->addr = NULL;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	290 rt_build(ifp->ctx, AF_INET);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	291 script_runreason(ifp, "IPV4LL");
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	292 ipv4ll_pickaddr(ifp);
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	293 ipv4ll_start(ifp);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	294 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	295
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	296 #ifndef KERNEL_RFC5227
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	297 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	298 ipv4ll_not_found_arp(struct arp_state *astate)
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	299 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	300
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	301 ipv4ll_not_found(astate->iface);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	302 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	303
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	304 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	305 ipv4ll_found_arp(struct arp_state astate, __unused const struct arp_msg amsg)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	306 {
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	307
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	308 ipv4ll_found(astate->iface);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	309 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	310
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	311 static void
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	312 ipv4ll_defend_failed_arp(struct arp_state *astate)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	313 {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	314
4457 8e41e487831d Linux: Fix compile Roy Marples <roy@marples.name> parents: 4453 diff changeset	315 ipv4ll_defend_failed(astate->iface);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	316 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	317 #endif
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	318
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	319 void
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	320 ipv4ll_start(void *arg)
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	321 {
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	322 struct interface *ifp = arg;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	323 struct ipv4ll_state *state;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	324 struct ipv4_addr *ia;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	325 bool repick;
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	326 #ifndef KERNEL_RFC5227
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	327 struct arp_state *astate;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	328 #endif
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	329
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	330 if ((state = IPV4LL_STATE(ifp)) == NULL) {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	331 ifp->if_data[IF_DATA_IPV4LL] = calloc(1, sizeof(*state));
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	332 if ((state = IPV4LL_STATE(ifp)) == NULL) {
4010 746684127581 logerr: errx with logging Roy Marples <roy@marples.name> parents: 3960 diff changeset	333 logerr(__func__);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	334 return;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	335 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	336 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	337
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	338 /* RFC 3927 Section 2.1 states that the random number generator
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	339 * SHOULD be seeded with a value derived from persistent information
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	340 * such as the IEEE 802 MAC address so that it usually picks
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	341 * the same address without persistent storage. */
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	342 if (!state->seeded) {
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	343 unsigned int seed;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	344 char *orig;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	345
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	346 if (sizeof(seed) > ifp->hwlen) {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	347 seed = 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	348 memcpy(&seed, ifp->hwaddr, ifp->hwlen);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	349 } else
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	350 memcpy(&seed, ifp->hwaddr + ifp->hwlen - sizeof(seed),
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	351 sizeof(seed));
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	352 /* coverity[dont_call] */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	353 orig = initstate(seed,
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	354 state->randomstate, sizeof(state->randomstate));
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	355
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	356 /* Save the original state. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	357 if (ifp->ctx->randomstate == NULL)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	358 ifp->ctx->randomstate = orig;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	359
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	360 /* Set back the original state until we need the seeded one. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	361 setstate(ifp->ctx->randomstate);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	362 state->seeded = true;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	363 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	364
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	365 /* Find the previosuly used address. */
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	366 if (state->pickedaddr.s_addr != INADDR_ANY)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	367 ia = ipv4_iffindaddr(ifp, &state->pickedaddr, NULL);
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	368 else
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	369 ia = NULL;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	370
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	371 /* Find an existing IPv4LL address and ensure we can work with it. */
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	372 if (ia == NULL)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	373 ia = ipv4_iffindlladdr(ifp);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	374
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	375 repick = false;
4481 7848309c100c sun: Don't define IN_IFF_TENTATIVE or IN_IFF_DETACHED Roy Marples <roy@marples.name> parents: 4403 diff changeset	376 #ifdef IN_IFF_DUPLICATED
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	377 if (ia != NULL && ia->addr_flags & IN_IFF_DUPLICATED) {
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	378 state->pickedaddr = ia->addr; /* So it's not picked again. */
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	379 repick = true;
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	380 if (ifp->options->options & DHCPCD_CONFIGURE)
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	381 ipv4_deladdr(ia, 0);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	382 ia = NULL;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	383 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	384 #endif
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	385
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	386 state->addr = ia;
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	387 state->down = true;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	388 if (ia != NULL) {
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	389 state->pickedaddr = ia->addr;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	390 #ifdef IN_IFF_TENTATIVE
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	391 if (ia->addr_flags & (IN_IFF_TENTATIVE \| IN_IFF_DETACHED)) {
4024 0984f93d896e To be consitent, do the same to loginfo as we just did for logdebug. Roy Marples <roy@marples.name> parents: 4023 diff changeset	392 loginfox("%s: waiting for DAD to complete on %s",
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	393 ifp->name, inet_ntoa(ia->addr));
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	394 return;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	395 }
4481 7848309c100c sun: Don't define IN_IFF_TENTATIVE or IN_IFF_DETACHED Roy Marples <roy@marples.name> parents: 4403 diff changeset	396 #endif
7848309c100c sun: Don't define IN_IFF_TENTATIVE or IN_IFF_DETACHED Roy Marples <roy@marples.name> parents: 4403 diff changeset	397 #ifdef IN_IFF_DUPLICATED
4024 0984f93d896e To be consitent, do the same to loginfo as we just did for logdebug. Roy Marples <roy@marples.name> parents: 4023 diff changeset	398 loginfox("%s: using IPv4LL address %s", ifp->name, ia->saddr);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	399 #endif
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	400 } else {
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	401 loginfox("%s: probing for an IPv4LL address", ifp->name);
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	402 if (repick \|\| state->pickedaddr.s_addr == INADDR_ANY)
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	403 ipv4ll_pickaddr(ifp);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	404 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	405
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	406 #ifdef KERNEL_RFC5227
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	407 ipv4ll_not_found(ifp);
4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	408 #else
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	409 ipv4ll_freearp(ifp);
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	410 state->arp = astate = arp_new(ifp, &state->pickedaddr);
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	411 if (state->arp == NULL)
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	412 return;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	413
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	414 astate->found_cb = ipv4ll_found_arp;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	415 astate->not_found_cb = ipv4ll_not_found_arp;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	416 astate->announced_cb = ipv4ll_announced_arp;
65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	417 astate->defend_failed_cb = ipv4ll_defend_failed_arp;
5239 4507bcbe200d IPv4LL: Fix for non NetBSD Roy Marples <roy@marples.name> parents: 5237 diff changeset	418 astate->free_cb = ipv4ll_free_arp;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	419 arp_probe(astate);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	420 #endif
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	421 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	422
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	423 void
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	424 ipv4ll_drop(struct interface *ifp)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	425 {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	426 struct ipv4ll_state *state;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	427 bool dropped = false;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	428 struct ipv4_state *istate;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	429
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	430 assert(ifp != NULL);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	431
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	432 ipv4ll_freearp(ifp);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	433
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	434 if ((ifp->options->options & DHCPCD_NODROP) == DHCPCD_NODROP)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	435 return;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	436
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	437 state = IPV4LL_STATE(ifp);
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	438 if (state && state->addr != NULL) {
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	439 if (ifp->options->options & DHCPCD_CONFIGURE)
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	440 ipv4_deladdr(state->addr, 1);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	441 state->addr = NULL;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	442 dropped = true;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	443 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	444
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	445 /* Free any other link local addresses that might exist. */
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	446 if ((istate = IPV4_STATE(ifp)) != NULL) {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	447 struct ipv4_addr ia, ian;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	448
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	449 TAILQ_FOREACH_SAFE(ia, &istate->addrs, next, ian) {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	450 if (IN_LINKLOCAL(ntohl(ia->addr.s_addr))) {
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	451 if (ifp->options->options & DHCPCD_CONFIGURE)
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	452 ipv4_deladdr(ia, 0);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	453 dropped = true;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	454 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	455 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	456 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	457
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	458 if (dropped) {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	459 rt_build(ifp->ctx, AF_INET);
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	460 script_runreason(ifp, "IPV4LL");
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	461 }
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	462 }
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	463
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	464 void
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	465 ipv4ll_reset(struct interface *ifp)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	466 {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	467 struct ipv4ll_state *state = IPV4LL_STATE(ifp);
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	468
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	469 if (state == NULL)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	470 return;
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	471 ipv4ll_freearp(ifp);
4341 990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	472 state->pickedaddr.s_addr = INADDR_ANY;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	473 state->seeded = false;
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	474 }
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	475
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	476 void
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	477 ipv4ll_free(struct interface *ifp)
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	478 {
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	479
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	480 assert(ifp != NULL);
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	481
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	482 ipv4ll_freearp(ifp);
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	483 free(IPV4LL_STATE(ifp));
990fde22c376 IPv4LL: Preserve address when carrier drops Roy Marples <roy@marples.name> parents: 4333 diff changeset	484 ifp->if_data[IF_DATA_IPV4LL] = NULL;
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	485 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	486
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	487 /* This may cause issues in BSD systems, where running as a single dhcpcd
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	488 * daemon would solve this issue easily. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	489 #ifdef HAVE_ROUTE_METRIC
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	490 int
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	491 ipv4ll_recvrt(__unused int cmd, const struct rt *rt)
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	492 {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	493 struct dhcpcd_ctx *ctx;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	494 struct interface *ifp;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	495
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	496 /* Only interested in default route changes. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	497 if (sa_is_unspecified(&rt->rt_dest))
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	498 return 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	499
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	500 /* If any interface is running IPv4LL, rebuild our routing table. */
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	501 ctx = rt->rt_ifp->ctx;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	502 TAILQ_FOREACH(ifp, ctx->ifaces, next) {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	503 if (IPV4LL_STATE_RUNNING(ifp)) {
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	504 rt_build(ctx, AF_INET);
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	505 break;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	506 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	507 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	508
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	509 return 0;
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	510 }
e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	511 #endif
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	512
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	513 struct ipv4_addr *
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	514 ipv4ll_handleifa(int cmd, struct ipv4_addr *ia, pid_t pid)
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	515 {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	516 struct interface *ifp;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	517 struct ipv4ll_state *state;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	518
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	519 ifp = ia->iface;
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	520 state = IPV4LL_STATE(ifp);
4579 e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	521 if (state == NULL)
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	522 return ia;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	523
4579 e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	524 if (cmd == RTM_DELADDR &&
e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	525 state->addr != NULL &&
e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	526 IN_ARE_ADDR_EQUAL(&state->addr->addr, &ia->addr))
e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	527 {
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	528 loginfox("%s: pid %d deleted IP address %s",
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	529 ifp->name, pid, ia->saddr);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	530 ipv4ll_defend_failed(ifp);
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	531 return ia;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	532 }
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	533
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	534 #ifdef IN_IFF_DUPLICATED
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	535 if (cmd != RTM_NEWADDR)
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	536 return ia;
4579 e48ad224ab66 IPv4LL: Work once more on NetBSD Roy Marples <roy@marples.name> parents: 4555 diff changeset	537 if (!IN_ARE_ADDR_EQUAL(&state->pickedaddr, &ia->addr))
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	538 return ia;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	539 if (!(ia->addr_flags & IN_IFF_NOTUSEABLE))
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	540 ipv4ll_not_found(ifp);
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	541 else if (ia->addr_flags & IN_IFF_DUPLICATED) {
00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	542 logerrx("%s: DAD detected %s", ifp->name, ia->saddr);
5237 65cef5f96919 IPv4LL: Fix for prior on NetBSD at least. Roy Marples <roy@marples.name> parents: 5038 diff changeset	543 ipv4ll_freearp(ifp);
5535 a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	544 if (ifp->options->options & DHCPCD_CONFIGURE)
a0d828e25482 Add --noconfigure option Roy Marples <roy@marples.name> parents: 5407 diff changeset	545 ipv4_deladdr(ia, 1);
4739 92183be56652 IPv4LL: Pick a different address at conflict Roy Marples <roy@marples.name> parents: 4737 diff changeset	546 state->addr = NULL;
92183be56652 IPv4LL: Pick a different address at conflict Roy Marples <roy@marples.name> parents: 4737 diff changeset	547 rt_build(ifp->ctx, AF_INET);
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	548 ipv4ll_found(ifp);
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	549 return NULL;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	550 }
3932 e802a4235d75 Move the source files along with dev, crypt and comapt into src dir. Roy Marples <roy@marples.name> parents: diff changeset	551 #endif
4737 65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	552
65679ce5c370 inet: Rework prior incase DHCP uses an IPv4LL address Roy Marples <roy@marples.name> parents: 4735 diff changeset	553 return ia;
4453 00fb50fd1a45 ARP: Refactor so that ACD is available for all inet addresses Roy Marples <roy@marples.name> parents: 4403 diff changeset	554 }

Mercurial > hg > dhcpcd

annotate src/ipv4ll.c @ 5535:a0d828e25482 draft