- improved the -a option. it can probe a interface automatically when
the interface wake up. it can be started anytime even when there is no network interface on the list of intarfaces in the kernel. - get a correct link ID for each interface at initialization (using scope libraries if HAVE_SCOPELIB is defined). - fill in sin6_scope_id correctly before sendmsg(). Obtained from: KAME MFC after: 1 week
This commit is contained in:
Hajimu UMEMOTO
parent
7007f3d660
commit
9a364ca35a
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=119026
@ -1,4 +1,4 @@
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/* $KAME: probe.c,v 1.10 2000/08/13 06:14:59 itojun Exp $ */
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/* $KAME: probe.c,v 1.16 2002/06/10 20:00:36 itojun Exp $ */
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/*
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* Copyright (C) 1998 WIDE Project.
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@ -40,6 +40,7 @@
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_dl.h>
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#include <netinet/in.h>
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#include <netinet6/in6_var.h>
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@ -59,7 +60,7 @@
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static struct msghdr sndmhdr;
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static struct iovec sndiov[2];
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static int probesock;
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static void sendprobe __P((struct in6_addr *, int));
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static void sendprobe __P((struct in6_addr *, struct ifinfo *));
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int
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probe_init()
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@ -98,11 +99,12 @@ probe_init()
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* Probe if each router in the default router list is still alive.
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*/
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void
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defrouter_probe(int ifindex)
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defrouter_probe(struct ifinfo *ifinfo)
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{
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u_char ntopbuf[INET6_ADDRSTRLEN];
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struct in6_drlist dr;
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int s, i;
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u_char ntopbuf[INET6_ADDRSTRLEN];
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int ifindex = ifinfo->sdl->sdl_index;
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if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
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warnmsg(LOG_ERR, __func__, "socket: %s", strerror(errno));
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@ -128,8 +130,7 @@ defrouter_probe(int ifindex)
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ntopbuf, INET6_ADDRSTRLEN));
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continue; /* ignore the address */
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}
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sendprobe(&dr.defrouter[i].rtaddr,
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dr.defrouter[i].if_index);
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sendprobe(&dr.defrouter[i].rtaddr, ifinfo);
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}
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}
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@ -138,18 +139,20 @@ defrouter_probe(int ifindex)
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}
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static void
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sendprobe(struct in6_addr *addr, int ifindex)
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sendprobe(struct in6_addr *addr, struct ifinfo *ifinfo)
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{
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u_char ntopbuf[INET6_ADDRSTRLEN], ifnamebuf[IFNAMSIZ];
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struct sockaddr_in6 sa6_probe;
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struct in6_pktinfo *pi;
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struct cmsghdr *cm;
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u_char ntopbuf[INET6_ADDRSTRLEN], ifnamebuf[IFNAMSIZ];
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u_int32_t ifindex = ifinfo->sdl->sdl_index;
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int hoplimit = 1;
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memset(&sa6_probe, 0, sizeof(sa6_probe));
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sa6_probe.sin6_family = AF_INET6;
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sa6_probe.sin6_len = sizeof(sa6_probe);
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sa6_probe.sin6_addr = *addr;
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sa6_probe.sin6_scope_id = ifinfo->linkid;
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sndmhdr.msg_name = (caddr_t)&sa6_probe;
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sndmhdr.msg_iov[0].iov_base = NULL;
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@ -1,4 +1,4 @@
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/* $KAME: rtsol.c,v 1.12 2001/11/12 11:47:11 jinmei Exp $ */
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/* $KAME: rtsol.c,v 1.26 2003/05/27 06:48:27 jinmei Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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@ -35,7 +35,6 @@
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <sys/queue.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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@ -52,6 +51,7 @@
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#include <arpa/inet.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <err.h>
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@ -68,6 +68,7 @@ static struct msghdr sndmhdr;
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static struct iovec rcviov[2];
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static struct iovec sndiov[2];
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static struct sockaddr_in6 from;
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static int rcvcmsglen;
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int rssock;
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@ -80,11 +81,10 @@ static int safefile __P((const char *));
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int
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sockopen()
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{
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int on;
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struct icmp6_filter filt;
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static u_char answer[1500];
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int rcvcmsglen, sndcmsglen;
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static u_char *rcvcmsgbuf = NULL, *sndcmsgbuf = NULL;
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int sndcmsglen, on;
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static u_char answer[1500];
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struct icmp6_filter filt;
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sndcmsglen = rcvcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) +
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CMSG_SPACE(sizeof(int));
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@ -163,11 +163,9 @@ sockopen()
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rcviov[0].iov_base = (caddr_t)answer;
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rcviov[0].iov_len = sizeof(answer);
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rcvmhdr.msg_name = (caddr_t)&from;
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rcvmhdr.msg_namelen = sizeof(from);
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rcvmhdr.msg_iov = rcviov;
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rcvmhdr.msg_iovlen = 1;
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rcvmhdr.msg_control = (caddr_t) rcvcmsgbuf;
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rcvmhdr.msg_controllen = rcvcmsglen;
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/* initialize msghdr for sending packets */
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sndmhdr.msg_namelen = sizeof(struct sockaddr_in6);
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@ -186,8 +184,12 @@ sendpacket(struct ifinfo *ifinfo)
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struct cmsghdr *cm;
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int hoplimit = 255;
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int i;
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struct sockaddr_in6 dst;
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sndmhdr.msg_name = (caddr_t)&sin6_allrouters;
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dst = sin6_allrouters;
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dst.sin6_scope_id = ifinfo->linkid;
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sndmhdr.msg_name = (caddr_t)&dst;
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sndmhdr.msg_iov[0].iov_base = (caddr_t)ifinfo->rs_data;
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sndmhdr.msg_iov[0].iov_len = ifinfo->rs_datalen;
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@ -228,17 +230,17 @@ sendpacket(struct ifinfo *ifinfo)
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void
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rtsol_input(int s)
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{
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int i;
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int *hlimp = NULL;
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struct icmp6_hdr *icp;
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int ifindex = 0;
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struct cmsghdr *cm;
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u_char ntopbuf[INET6_ADDRSTRLEN], ifnamebuf[IFNAMSIZ];
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int ifindex = 0, i, *hlimp = NULL;
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struct in6_pktinfo *pi = NULL;
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struct ifinfo *ifi = NULL;
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struct icmp6_hdr *icp;
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struct nd_router_advert *nd_ra;
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u_char ntopbuf[INET6_ADDRSTRLEN], ifnamebuf[IFNAMSIZ];
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struct cmsghdr *cm;
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/* get message */
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/* get message. namelen and controllen must always be initialized. */
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rcvmhdr.msg_namelen = sizeof(from);
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rcvmhdr.msg_controllen = rcvcmsglen;
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if ((i = recvmsg(s, &rcvmhdr, 0)) < 0) {
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warnmsg(LOG_ERR, __func__, "recvmsg: %s", strerror(errno));
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return;
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@ -1,4 +1,4 @@
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.\" $KAME: rtsold.8,v 1.16 2000/10/15 13:19:05 itojun Exp $
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.\" $KAME: rtsold.8,v 1.20 2003/04/11 12:46:12 jinmei Exp $
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.\"
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.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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.\" All rights reserved.
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@ -56,9 +56,8 @@
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.Fl a
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.\"
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.Sh DESCRIPTION
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The
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.Nm
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utility is the daemon program to send ICMPv6 Router Solicitation messages
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is the daemon program to send ICMPv6 Router Solicitation messages
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on the specified interfaces.
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If a node (re)attaches to a link,
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.Nm
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@ -66,10 +65,9 @@ sends some Router Solicitations on the link destined to the link-local scope
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all-routers multicast address to discover new routers
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and to get non link-local addresses.
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.Pp
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The
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.Nm
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utility should be used on IPv6 hosts
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(non-router nodes)
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should be used on IPv6 hosts
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.Pq non-router nodes
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only.
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.Pp
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If you invoke the program as
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@ -98,9 +96,8 @@ Just after invocation of
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daemon.
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.It
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The interface is up after a temporary interface failure.
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The
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.Nm
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utility detects such failures by periodically probing to see if the status
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detects such failures by periodically probing to see if the status
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of the interface is active or not.
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Note that some network cards and drivers do not allow the extraction
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of link state.
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@ -154,13 +151,12 @@ Upon receipt of signal
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will dump the current internal state into
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.Pa /var/run/rtsold.dump .
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.\"
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.Sh OPTIONS
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl a
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Autoprobe outgoing interface.
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The
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.Nm
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utility
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will try to find a non-loopback, non-point-to-point, IPv6-capable interface.
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If
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.Nm
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@ -173,7 +169,8 @@ Enable debugging.
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.It Fl D
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Enable more debugging including the printing of internal timer information.
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.It Fl f
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Prevent
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.Fl f
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prevents
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.Nm
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from becoming a daemon (foreground mode).
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Warning messages are generated to standard error
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@ -212,8 +209,10 @@ must be the absolute path from root to the script file, be a regular
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file, and be created by the same owner who runs
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.Nm .
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.El
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.Sh DIAGNOSTICS
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.Ex -std rtsold rtsol
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.Sh RETURN VALUES
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The
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.Nm
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program exits 0 on success, and >0 on failures.
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.\"
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.Sh FILES
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.Bl -tag -width /var/run/rtsold.dump -compact
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@ -231,13 +230,12 @@ dumps internal state on.
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.Sh HISTORY
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The
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.Nm
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utility is based on the
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command is based on the
|
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.Nm rtsol
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utility, which first appeared in WIDE/KAME IPv6 protocol stack kit.
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The
|
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command, which first appeared in WIDE/KAME IPv6 protocol stack kit.
|
||||
.Nm rtsol
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utility is now integrated into
|
||||
.Nm .
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||||
is now integrated into
|
||||
.Xr rtsold 8 .
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.\"
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.Sh BUGS
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In some operating systems, when a PCMCIA network card is removed
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@ -1,4 +1,4 @@
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/* $KAME: rtsold.c,v 1.31 2001/05/22 06:03:06 jinmei Exp $ */
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/* $KAME: rtsold.c,v 1.67 2003/05/17 18:16:15 itojun Exp $ */
|
||||
|
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/*
|
||||
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
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@ -101,7 +101,6 @@ static int do_dump;
|
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static char *dumpfilename = "/var/run/rtsold.dump"; /* XXX: should be configurable */
|
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static char *pidfilename = "/var/run/rtsold.pid"; /* should be configurable */
|
||||
|
||||
static int ifconfig __P((char *));
|
||||
#if 0
|
||||
static int ifreconfig __P((char *));
|
||||
#endif
|
||||
@ -114,7 +113,6 @@ static void TIMEVAL_SUB __P((struct timeval *, struct timeval *,
|
||||
|
||||
static void rtsold_set_dump_file __P((int));
|
||||
static void usage __P((char *));
|
||||
static char **autoifprobe __P((void));
|
||||
|
||||
int
|
||||
main(argc, argv)
|
||||
@ -177,25 +175,7 @@ main(argc, argv)
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
if (aflag) {
|
||||
int i;
|
||||
|
||||
if (argc != 0) {
|
||||
usage(argv0);
|
||||
/*NOTREACHED*/
|
||||
}
|
||||
|
||||
argv = autoifprobe();
|
||||
if (!argv) {
|
||||
errx(1, "could not autoprobe interface");
|
||||
/*NOTREACHED*/
|
||||
}
|
||||
|
||||
for (i = 0; argv[i]; i++)
|
||||
;
|
||||
argc = i;
|
||||
}
|
||||
if (argc == 0) {
|
||||
if ((!aflag && argc == 0) || (aflag && argc != 0)) {
|
||||
usage(argv0);
|
||||
/*NOTREACHED*/
|
||||
}
|
||||
@ -292,7 +272,9 @@ main(argc, argv)
|
||||
exit(1);
|
||||
/*NOTREACHED*/
|
||||
}
|
||||
while (argc--) {
|
||||
if (aflag)
|
||||
argv = autoifprobe();
|
||||
while (argv && *argv) {
|
||||
if (ifconfig(*argv)) {
|
||||
warnmsg(LOG_ERR, __func__,
|
||||
"failed to initialize %s", *argv);
|
||||
@ -391,7 +373,7 @@ main(argc, argv)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
int
|
||||
ifconfig(char *ifname)
|
||||
{
|
||||
struct ifinfo *ifinfo;
|
||||
@ -424,6 +406,15 @@ ifconfig(char *ifname)
|
||||
if (make_packet(ifinfo))
|
||||
goto bad;
|
||||
|
||||
/* set link ID of this interface. */
|
||||
#ifdef HAVE_SCOPELIB
|
||||
if (inet_zoneid(AF_INET6, 2, ifname, &ifinfo->linkid))
|
||||
goto bad;
|
||||
#else
|
||||
/* XXX: assume interface IDs as link IDs */
|
||||
ifinfo->linkid = ifinfo->sdl->sdl_index;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* check if the interface is available.
|
||||
* also check if SIOCGIFMEDIA ioctl is OK on the interface.
|
||||
@ -462,6 +453,22 @@ ifconfig(char *ifname)
|
||||
return(-1);
|
||||
}
|
||||
|
||||
void
|
||||
iflist_init()
|
||||
{
|
||||
struct ifinfo *ifi, *next;
|
||||
|
||||
for (ifi = iflist; ifi; ifi = next) {
|
||||
next = ifi->next;
|
||||
if (ifi->sdl)
|
||||
free(ifi->sdl);
|
||||
if (ifi->rs_data)
|
||||
free(ifi->rs_data);
|
||||
free(ifi);
|
||||
iflist = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
#if 0
|
||||
static int
|
||||
ifreconfig(char *ifname)
|
||||
@ -602,7 +609,7 @@ rtsol_check_timer()
|
||||
ifinfo->otherconfig = 0;
|
||||
|
||||
if (probe && mobile_node)
|
||||
defrouter_probe(ifinfo->sdl->sdl_index);
|
||||
defrouter_probe(ifinfo);
|
||||
break;
|
||||
}
|
||||
case IFS_DELAY:
|
||||
@ -804,13 +811,27 @@ warnmsg(priority, func, msg, va_alist)
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
static char **
|
||||
/*
|
||||
* return a list of interfaces which is suitable to sending an RS.
|
||||
*/
|
||||
char **
|
||||
autoifprobe()
|
||||
{
|
||||
static char ifname[IFNAMSIZ + 1];
|
||||
static char *argv[2];
|
||||
static char **argv = NULL;
|
||||
static int n = 0;
|
||||
char **a;
|
||||
int i, found;
|
||||
struct ifaddrs *ifap, *ifa, *target;
|
||||
|
||||
/* initialize */
|
||||
while (n--)
|
||||
free(argv[n]);
|
||||
if (argv) {
|
||||
free(argv);
|
||||
argv = NULL;
|
||||
}
|
||||
n = 0;
|
||||
|
||||
if (getifaddrs(&ifap) != 0)
|
||||
return NULL;
|
||||
|
||||
@ -829,32 +850,43 @@ autoifprobe()
|
||||
if (ifa->ifa_addr->sa_family != AF_INET6)
|
||||
continue;
|
||||
|
||||
if (target && strcmp(target->ifa_name, ifa->ifa_name) == 0)
|
||||
found = 0;
|
||||
for (i = 0; i < n; i++) {
|
||||
if (strcmp(argv[i], ifa->ifa_name) == 0) {
|
||||
found++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (found)
|
||||
continue;
|
||||
|
||||
if (!target)
|
||||
target = ifa;
|
||||
else {
|
||||
/* if we find multiple candidates, failure. */
|
||||
if (dflag > 1)
|
||||
warnx("multiple interfaces found");
|
||||
target = NULL;
|
||||
break;
|
||||
/* if we find multiple candidates, just warn. */
|
||||
if (n != 0 && dflag > 1)
|
||||
warnx("multiple interfaces found");
|
||||
|
||||
a = (char **)realloc(argv, (n + 1) * sizeof(char **));
|
||||
if (a == NULL)
|
||||
err(1, "realloc");
|
||||
argv = a;
|
||||
argv[n] = strdup(ifa->ifa_name);
|
||||
if (!argv[n])
|
||||
err(1, "malloc");
|
||||
n++;
|
||||
argv[n] = NULL;
|
||||
}
|
||||
|
||||
if (n) {
|
||||
a = (char **)realloc(argv, (n + 1) * sizeof(char **));
|
||||
if (a == NULL)
|
||||
err(1, "realloc");
|
||||
argv = a;
|
||||
argv[n] = NULL;
|
||||
|
||||
if (dflag > 0) {
|
||||
for (i = 0; i < n; i++)
|
||||
warnx("probing %s", argv[i]);
|
||||
}
|
||||
}
|
||||
|
||||
if (target) {
|
||||
strncpy(ifname, target->ifa_name, sizeof(ifname) - 1);
|
||||
ifname[sizeof(ifname) - 1] = '\0';
|
||||
argv[0] = ifname;
|
||||
argv[1] = NULL;
|
||||
|
||||
if (dflag > 0)
|
||||
warnx("probing %s", argv[0]);
|
||||
}
|
||||
freeifaddrs(ifap);
|
||||
if (target)
|
||||
return argv;
|
||||
else
|
||||
return (char **)NULL;
|
||||
return argv;
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $KAME: rtsold.h,v 1.11 2000/10/10 06:18:04 itojun Exp $ */
|
||||
/* $KAME: rtsold.h,v 1.19 2003/04/16 09:48:15 itojun Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
||||
@ -36,6 +36,7 @@ struct ifinfo {
|
||||
|
||||
struct sockaddr_dl *sdl; /* link-layer address */
|
||||
char ifname[IF_NAMESIZE]; /* interface name */
|
||||
u_int32_t linkid; /* link ID of this interface */
|
||||
int active; /* interface status */
|
||||
int probeinterval; /* interval of probe timer (if necessary) */
|
||||
int probetimer; /* rest of probe timer */
|
||||
@ -65,11 +66,15 @@ struct ifinfo {
|
||||
/* rtsold.c */
|
||||
extern struct timeval tm_max;
|
||||
extern int dflag;
|
||||
extern int aflag;
|
||||
extern char *otherconf_script;
|
||||
extern int ifconfig __P((char *));
|
||||
extern void iflist_init __P((void));
|
||||
struct ifinfo *find_ifinfo __P((int));
|
||||
void rtsol_timer_update __P((struct ifinfo *));
|
||||
extern void warnmsg __P((int, const char *, const char *, ...))
|
||||
__attribute__((__format__(__printf__, 3, 4)));
|
||||
extern char **autoifprobe __P((void));
|
||||
|
||||
/* if.c */
|
||||
extern int ifinit __P((void));
|
||||
@ -87,7 +92,7 @@ extern void rtsol_input __P((int));
|
||||
|
||||
/* probe.c */
|
||||
extern int probe_init __P((void));
|
||||
extern void defrouter_probe __P((int));
|
||||
extern void defrouter_probe __P((struct ifinfo *));
|
||||
|
||||
/* dump.c */
|
||||
extern void rtsold_dump_file __P((char *));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user