Date: Sun, 13 Sep 2020 09:00:00 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365685 - head/usr.sbin/traceroute6 Message-ID: <202009130900.08D900xt084472@repo.freebsd.org>
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Author: tuexen Date: Sun Sep 13 09:00:00 2020 New Revision: 365685 URL: https://svnweb.freebsd.org/changeset/base/365685 Log: Add a -t option to traceroute6 to control the traffic class used when sending probe packets. Reviewed by: rscheff MFC after: 1 week Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D26410 Modified: head/usr.sbin/traceroute6/traceroute6.8 head/usr.sbin/traceroute6/traceroute6.c Modified: head/usr.sbin/traceroute6/traceroute6.8 ============================================================================== --- head/usr.sbin/traceroute6/traceroute6.8 Sun Sep 13 02:17:57 2020 (r365684) +++ head/usr.sbin/traceroute6/traceroute6.8 Sun Sep 13 09:00:00 2020 (r365685) @@ -29,7 +29,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 16, 2019 +.Dd September 13, 2020 .Dt TRACEROUTE6 8 .Os .\" @@ -61,6 +61,9 @@ .Op Fl s Ar src .Ek .Bk -words +.Op Fl t Ar tclass +.Ek +.Bk -words .Op Fl w Ar waittime .Ek .Bk -words @@ -148,6 +151,13 @@ If .Ar datalen is up to 28, probe packets consist of a SHUTDOWN-ACK chunk possibly bundled with a PAD chunk. For larger probe packets, an INIT chunk is used. +.It Fl t Ar tclass +.Ar tclass +specifies the +.Em traffic class +used when sending probe packets. +The value must be a decimal integer in the range 0 to 255. +The default is 0. .It Fl T Use TCP segments for the probes. .It Fl U Modified: head/usr.sbin/traceroute6/traceroute6.c ============================================================================== --- head/usr.sbin/traceroute6/traceroute6.c Sun Sep 13 02:17:57 2020 (r365684) +++ head/usr.sbin/traceroute6/traceroute6.c Sun Sep 13 09:00:00 2020 (r365685) @@ -346,6 +346,7 @@ static u_long max_hops = 30; static u_int16_t srcport; static u_int16_t port = 32768+666; /* start udp dest port # for probe packets */ static u_int16_t ident; +static int tclass = -1; static int options; /* socket options */ static int verbose; static int waittime = 5; /* time to wait for response (in seconds) */ @@ -364,7 +365,7 @@ main(int argc, char *argv[]) int ch, i, on = 1, seq, rcvcmsglen, error; struct addrinfo hints, *res; static u_char *rcvcmsgbuf; - u_long probe, hops, lport; + u_long probe, hops, lport, ltclass; struct hostent *hp; size_t size, minlen; uid_t uid; @@ -414,7 +415,7 @@ main(int argc, char *argv[]) seq = 0; ident = htons(getpid() & 0xffff); /* same as ping6 */ - while ((ch = getopt(argc, argv, "aA:df:g:Ilm:nNp:q:rs:STUvw:")) != -1) + while ((ch = getopt(argc, argv, "aA:df:g:Ilm:nNp:q:rs:St:TUvw:")) != -1) switch (ch) { case 'a': as_path = 1; @@ -531,6 +532,17 @@ main(int argc, char *argv[]) case 'S': useproto = IPPROTO_SCTP; break; + case 't': + ep = NULL; + errno = 0; + ltclass = strtoul(optarg, &ep, 0); + if (errno || !*optarg || *ep || ltclass > 255) { + fprintf(stderr, + "traceroute6: invalid traffic class.\n"); + exit(1); + } + tclass = (int)ltclass; + break; case 'T': useproto = IPPROTO_TCP; break; @@ -595,6 +607,13 @@ main(int argc, char *argv[]) exit(1); } + if (tclass != -1) { + if (setsockopt(sndsock, IPPROTO_IPV6, IPV6_TCLASS, &tclass, + sizeof(int)) == -1) { + perror("setsockopt(IPV6_TCLASS)"); + exit(7); + } + } if (argc < 1 || argc > 2) usage();
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