Add a dtrace provider for UDP-Lite.
The dtrace provider for UDP-Lite is modeled after the UDP provider. This fixes the bug that UDP-Lite packets were triggering the UDP provider. Thanks to dteske@ for providing the dwatch module. Reviewed by: dteske@, markj@, rrs@ Relnotes: yes Differential Revision: https://reviews.freebsd.org/D16377
This commit is contained in:
Michael Tuexen
parent
200c27a75d
commit
7bda966394
125
cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localudplite.ksh
Executable file
125
cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4localudplite.ksh
Executable file
@ -0,0 +1,125 @@
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#!/usr/bin/env ksh
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
|
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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||||
# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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#
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# Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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#
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#
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# Test {ip,udplite}:::{send,receive} of IPv4 UDP-Lite to a local address.
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#
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# This may fail due to:
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#
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# 1. A change to the ip stack breaking expected probe behavior,
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# which is the reason we are testing.
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# 2. No physical network interface is plumbed and up.
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# 3. No other hosts on this subnet are reachable and listening on rpcbind.
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# 4. An unlikely race causes the unlocked global send/receive
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# variables to be corrupted.
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#
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# This test sends a UDP-Lite message using perl and checks that at least the
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# following counts were traced:
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#
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# 1 x ip:::send (UDPLite sent to UDP-Lite port 33434)
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# 1 x udplite:::send (UDPLite sent to UDP-Lite port 33434)
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# 1 x ip:::receive (UDP-Lite received)
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# 1 x udplite:::receive (UDP-Lite received)
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#
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# A udplite:::receive event is expected even if the received UDP-Lite packet
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# elicits an ICMP PORT_UNREACHABLE message since there is no UDP-Lite
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# socket for receiving the packet.
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#
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if (( $# != 1 )); then
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print -u2 "expected one argument: <dtrace-path>"
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exit 2
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fi
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dtrace=$1
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local=127.0.0.1
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port=33434
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DIR=/var/tmp/dtest.$$
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mkdir $DIR
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cd $DIR
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cat > test.pl <<-EOPERL
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use IO::Socket;
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my \$s = IO::Socket::INET->new(
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Type => SOCK_DGRAM,
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Proto => "udplite",
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PeerAddr => "$local",
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PeerPort => $port);
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die "Could not create UDP-Lite socket $local port $port" unless \$s;
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send \$s, "Hello", 0;
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close \$s;
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sleep(2);
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EOPERL
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$dtrace -c 'perl test.pl' -qs /dev/stdin <<EODTRACE
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BEGIN
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{
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ipsend = udplitesend = ipreceive = udplitereceive = 0;
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}
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ip:::send
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/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" &&
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args[4]->ipv4_protocol == IPPROTO_UDPLITE/
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{
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ipsend++;
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}
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udplite:::send
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/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/
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{
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udplitesend++;
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}
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ip:::receive
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/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local" &&
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args[4]->ipv4_protocol == IPPROTO_UDPLITE/
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{
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ipreceive++;
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}
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udplite:::receive
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/args[2]->ip_saddr == "$local" && args[2]->ip_daddr == "$local"/
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{
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udplitereceive++;
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}
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END
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{
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printf("Minimum UDP-Lite events seen\n\n");
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printf("ip:::send - %s\n", ipsend >= 1 ? "yes" : "no");
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printf("ip:::receive - %s\n", ipreceive >= 1 ? "yes" : "no");
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printf("udplite:::send - %s\n", udplitesend >= 1 ? "yes" : "no");
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printf("udplite:::receive - %s\n", udplitereceive >= 1 ? "yes" : "no");
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}
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EODTRACE
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status=$?
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cd /
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/bin/rm -rf $DIR
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exit $status
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@ -0,0 +1,7 @@
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Minimum UDP-Lite events seen
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ip:::send - yes
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ip:::receive - yes
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udplite:::send - yes
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udplite:::receive - yes
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113
cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remoteudplite.ksh
Executable file
113
cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ip/tst.ipv4remoteudplite.ksh
Executable file
@ -0,0 +1,113 @@
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#!/usr/bin/env ksh93
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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#
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# Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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#
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#
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# Test {udplite,ip}:::{send,receive} of IPv4 UDP-Lite to a remote host.
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#
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# This may fail due to:
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#
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# 1. A change to the ip stack breaking expected probe behavior,
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# which is the reason we are testing.
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# 2. No physical network interface is plumbed and up.
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# 3. No other hosts on this subnet are reachable and listening on rpcbind.
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# 4. An unlikely race causes the unlocked global send/receive
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# variables to be corrupted.
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#
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# This test sends a UDP-Lite message using perl and checks that at least the
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# following counts were traced:
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#
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# 1 x ip:::send (UDP-Lite sent to UDP-Lite port 33434)
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# 1 x udplite:::send (UDP-Lite sent to UDP-Lite port 33434)
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#
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if (( $# != 1 )); then
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print -u2 "expected one argument: <dtrace-path>"
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exit 2
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fi
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dtrace=$1
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getaddr=./get.ipv4remote.pl
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port=33434
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DIR=/var/tmp/dtest.$$
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if [[ ! -x $getaddr ]]; then
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print -u2 "could not find or execute sub program: $getaddr"
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exit 3
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fi
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$getaddr | read source dest
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if (( $? != 0 )); then
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exit 4
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fi
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mkdir $DIR
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cd $DIR
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cat > test.pl <<-EOPERL
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use IO::Socket;
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my \$s = IO::Socket::INET->new(
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Type => SOCK_DGRAM,
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Proto => "udplite",
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PeerAddr => "$dest",
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PeerPort => $port);
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die "Could not create UDP-Lite socket $dest port $port" unless \$s;
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send \$s, "Hello", 0;
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close \$s;
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sleep(2);
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EOPERL
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$dtrace -c 'perl test.pl' -qs /dev/stdin <<EODTRACE
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BEGIN
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{
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ipsend = udplitesend = 0;
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}
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ip:::send
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/args[2]->ip_saddr == "$source" && args[2]->ip_daddr == "$dest" &&
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args[4]->ipv4_protocol == IPPROTO_UDPLITE/
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{
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ipsend++;
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}
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udplite:::send
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/args[2]->ip_saddr == "$source" && args[2]->ip_daddr == "$dest"/
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{
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udplitesend++;
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}
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END
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{
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printf("Minimum UDPLite events seen\n\n");
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printf("ip:::send - %s\n", ipsend >= 1 ? "yes" : "no");
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printf("udplite:::send - %s\n", udplitesend >= 1 ? "yes" : "no");
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}
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EODTRACE
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status=$?
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cd /
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/bin/rm -rf $DIR
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exit $status
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@ -0,0 +1,5 @@
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Minimum UDP-Lite events seen
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ip:::send - yes
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udplite:::send - yes
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@ -56,6 +56,7 @@ DSRCS= errno.d \
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tcp.d \
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socket.d \
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udp.d \
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udplite.d \
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unistd.d
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FILES= ${DSRCS}
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@ -167,6 +167,8 @@ inline short IPPROTO_IPCOMP = 108;
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inline short IPPROTO_SCTP = 132;
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#pragma D binding "1.5" IPPROTO_RAW
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inline short IPPROTO_RAW = 255;
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#pragma D binding "1.13" IPPROTO_UDPLITE
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inline short IPPROTO_UDPLITE = 136;
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inline uint8_t INP_IPV4 = 0x01;
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inline uint8_t INP_IPV6 = 0x02;
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@ -193,6 +195,7 @@ inline string protocols[int proto] =
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proto == IPPROTO_PIM ? "PIM" :
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proto == IPPROTO_IPCOMP ? "IPCOMP" :
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proto == IPPROTO_SCTP ? "SCTP" :
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proto == IPPROTO_UDPLITE ? "UDPLITE" :
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proto == IPPROTO_RAW ? "RAW" :
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"<unknown>";
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77
cddl/lib/libdtrace/udplite.d
Normal file
77
cddl/lib/libdtrace/udplite.d
Normal file
@ -0,0 +1,77 @@
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
|
||||
* and limitations under the License.
|
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*
|
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* When distributing Covered Code, include this CDDL HEADER in each
|
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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* $FreeBSD$
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*/
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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013 Mark Johnston <markj@FreeBSD.org>
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* Copyright (c) 2018 Michael Tuexen <tuexen@FreeBSD.org>
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*/
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#pragma D depends_on library ip.d
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#pragma D depends_on module kernel
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#pragma D depends_on provider udplite
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/*
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* udplitesinfo contains stable UDPLite details.
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*/
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typedef struct udplitesinfo {
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uintptr_t udplites_addr;
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uint16_t udplites_lport; /* local port */
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uint16_t udplites_rport; /* remote port */
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string udplites_laddr; /* local address, as a string */
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string udplites_raddr; /* remote address, as a string */
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} udplitesinfo_t;
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/*
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* udpliteinfo is the UDPLite header fields.
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*/
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typedef struct udpliteinfo {
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uint16_t udplite_sport; /* source port */
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uint16_t udplite_dport; /* destination port */
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uint16_t udplite_coverage; /* checksum coverage */
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uint16_t udplite_checksum; /* headers + data checksum */
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struct udplitehdr *udplite_hdr; /* raw UDPLite header */
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} udpliteinfo_t;
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#pragma D binding "1.13" translator
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translator udplitesinfo_t < struct inpcb *p > {
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udplites_addr = (uintptr_t)p;
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udplites_lport = p == NULL ? 0 : ntohs(p->inp_inc.inc_ie.ie_lport);
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udplites_rport = p == NULL ? 0 : ntohs(p->inp_inc.inc_ie.ie_fport);
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udplites_laddr = p == NULL ? "<unknown>" :
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p->inp_vflag == INP_IPV4 ?
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inet_ntoa(&p->inp_inc.inc_ie.ie_dependladdr.id46_addr.ia46_addr4.s_addr) :
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inet_ntoa6(&p->inp_inc.inc_ie.ie_dependladdr.id6_addr);
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udplites_raddr = p == NULL ? "<unknown>" :
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p->inp_vflag == INP_IPV4 ?
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inet_ntoa(&p->inp_inc.inc_ie.ie_dependfaddr.id46_addr.ia46_addr4.s_addr) :
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inet_ntoa6(&p->inp_inc.inc_ie.ie_dependfaddr.id6_addr);
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};
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#pragma D binding "1.13" translator
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translator udpliteinfo_t < struct udphdr *p > {
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udplite_sport = p == NULL ? 0 : ntohs(p->uh_sport);
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udplite_dport = p == NULL ? 0 : ntohs(p->uh_dport);
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udplite_coverage = p == NULL ? 0 : ntohs(p->uh_ulen);
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udplite_checksum = p == NULL ? 0 : ntohs(p->uh_sum);
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udplite_hdr = (struct udplitehdr *)p;
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};
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@ -13,12 +13,16 @@ ${PACKAGE}FILES= \
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tst.ipv4localtcp.ksh.out \
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tst.ipv4localudp.ksh \
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tst.ipv4localudp.ksh.out \
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tst.ipv4localudplite.ksh \
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tst.ipv4localudplite.ksh.out \
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tst.ipv4remoteicmp.ksh \
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tst.ipv4remoteicmp.ksh.out \
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tst.ipv4remotetcp.ksh \
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tst.ipv4remotetcp.ksh.out \
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tst.ipv4remoteudp.ksh \
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tst.ipv4remoteudp.ksh.out \
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tst.ipv4remoteudplite.ksh \
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tst.ipv4remoteudplite.ksh.out \
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tst.ipv6localicmp.ksh \
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tst.ipv6localicmp.ksh.out \
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tst.ipv6remoteicmp.ksh \
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@ -119,6 +119,7 @@ exclude SKIP common/builtinvar/tst.ipl1.d
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# These tests rely on being able to find a host via broadcast pings.
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exclude EXFAIL common/ip/tst.ipv4remotetcp.ksh
|
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exclude EXFAIL common/ip/tst.ipv4remoteudp.ksh
|
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exclude EXFAIL common/ip/tst.ipv4remoteudplite.ksh
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exclude EXFAIL common/ip/tst.ipv6remoteicmp.ksh
|
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exclude EXFAIL common/ip/tst.ipv4remoteicmp.ksh
|
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exclude EXFAIL common/ip/tst.remotetcpstate.ksh
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@ -14,6 +14,7 @@ FILES= chmod \
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sendrecv \
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tcp \
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udp \
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udplite \
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vop_create \
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vop_readdir \
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vop_rename \
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@ -78,6 +79,8 @@ LINKS+= ${LIBEXECDIR}/dwatch/tcp ${LIBEXECDIR}/dwatch/tcp-state-change
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LINKS+= ${LIBEXECDIR}/dwatch/tcp ${LIBEXECDIR}/dwatch/tcp-status
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LINKS+= ${LIBEXECDIR}/dwatch/udp ${LIBEXECDIR}/dwatch/udp-receive
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LINKS+= ${LIBEXECDIR}/dwatch/udp ${LIBEXECDIR}/dwatch/udp-send
|
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LINKS+= ${LIBEXECDIR}/dwatch/udplite ${LIBEXECDIR}/dwatch/udplite-receive
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LINKS+= ${LIBEXECDIR}/dwatch/udplite ${LIBEXECDIR}/dwatch/udplite-send
|
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LINKS+= ${LIBEXECDIR}/dwatch/vop_create ${LIBEXECDIR}/dwatch/vop_lookup
|
||||
LINKS+= ${LIBEXECDIR}/dwatch/vop_create ${LIBEXECDIR}/dwatch/vop_mkdir
|
||||
LINKS+= ${LIBEXECDIR}/dwatch/vop_create ${LIBEXECDIR}/dwatch/vop_mknod
|
||||
|
||||
89
cddl/usr.sbin/dwatch/libexec/udplite
Normal file
89
cddl/usr.sbin/dwatch/libexec/udplite
Normal file
@ -0,0 +1,89 @@
|
||||
# -*- tab-width: 4 -*- ;; Emacs
|
||||
# vi: set filetype=sh tabstop=8 shiftwidth=8 noexpandtab :: Vi/ViM
|
||||
############################################################ IDENT(1)
|
||||
#
|
||||
# $Title: dwatch(8) module for dtrace_udplite(4) $
|
||||
# $Copyright: 2014-2018 Devin Teske. All rights reserved. $
|
||||
# $FreeBSD$
|
||||
#
|
||||
############################################################ DESCRIPTION
|
||||
#
|
||||
# Display local/remote UDP addresses/ports and bytes sent/received for UDP I/O
|
||||
#
|
||||
############################################################ PROBE
|
||||
|
||||
case "$PROFILE" in
|
||||
udplite) : ${PROBE:=udplite:::send, udplite:::receive} ;;
|
||||
*) : ${PROBE:=udplite:::${PROFILE#udplite-}}
|
||||
esac
|
||||
|
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############################################################ ACTIONS
|
||||
|
||||
exec 9<<EOF
|
||||
this string flow;
|
||||
this string local;
|
||||
this string remote;
|
||||
this u_char local6;
|
||||
this u_char recv;
|
||||
this u_char remote6;
|
||||
this uint16_t coverage;
|
||||
this uint16_t lport;
|
||||
this uint16_t rport;
|
||||
|
||||
$PROBE /* probe ID $ID */
|
||||
{${TRACE:+
|
||||
printf("<$ID>");
|
||||
}
|
||||
/*
|
||||
* dtrace_udplite(4)
|
||||
*/
|
||||
this->recv = probename == "receive" ? 1 : 0;
|
||||
this->flow = this->recv ? "<-" : "->";
|
||||
|
||||
/*
|
||||
* ipinfo_t *
|
||||
*/
|
||||
this->local = this->recv ? args[2]->ip_daddr : args[2]->ip_saddr;
|
||||
this->remote = this->recv ? args[2]->ip_saddr : args[2]->ip_daddr;
|
||||
|
||||
/*
|
||||
* udpliteinfo_t *
|
||||
*/
|
||||
this->coverage = (uint16_t)args[4]->udplite_coverage;
|
||||
this->lport = this->recv ? args[4]->udplite_dport : args[4]->udplite_sport;
|
||||
this->rport = this->recv ? args[4]->udplite_sport : args[4]->udplite_dport;
|
||||
|
||||
/*
|
||||
* IPv6 support
|
||||
*/
|
||||
this->local6 = strstr(this->local, ":") != NULL ? 1 : 0;
|
||||
this->remote6 = strstr(this->remote, ":") != NULL ? 1 : 0;
|
||||
this->local = strjoin(strjoin(this->local6 ? "[" : "",
|
||||
this->local), this->local6 ? "]" : "");
|
||||
this->remote = strjoin(strjoin(this->remote6 ? "[" : "",
|
||||
this->remote), this->remote6 ? "]" : "");
|
||||
}
|
||||
EOF
|
||||
ACTIONS=$( cat <&9 )
|
||||
ID=$(( $ID + 1 ))
|
||||
|
||||
############################################################ EVENT DETAILS
|
||||
|
||||
if [ ! "$CUSTOM_DETAILS" ]; then
|
||||
exec 9<<EOF
|
||||
/*
|
||||
* Print network I/O details
|
||||
*/
|
||||
printf("%s:%u %s %s:%u %d byte%s",
|
||||
this->local, this->lport,
|
||||
this->flow,
|
||||
this->remote, this->rport,
|
||||
this->coverage,
|
||||
this->coverage == 1 ? "" : "s");
|
||||
EOF
|
||||
EVENT_DETAILS=$( cat <&9 )
|
||||
fi
|
||||
|
||||
################################################################################
|
||||
# END
|
||||
################################################################################
|
||||
@ -897,7 +897,8 @@ _dtrace_provs= dtrace_io.4 \
|
||||
dtrace_sched.4 \
|
||||
dtrace_sctp.4 \
|
||||
dtrace_tcp.4 \
|
||||
dtrace_udp.4
|
||||
dtrace_udp.4 \
|
||||
dtrace_udplite.4
|
||||
.endif
|
||||
|
||||
.if ${MK_ISCSI} != "no"
|
||||
|
||||
@ -23,7 +23,7 @@
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd April 22, 2018
|
||||
.Dd August 1, 2018
|
||||
.Dt DTRACE_SCTP 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
@ -117,6 +117,7 @@ handshake.
|
||||
.Xr dtrace 1 ,
|
||||
.Xr dtrace_ip 4 ,
|
||||
.Xr dtrace_udp 4 ,
|
||||
.Xr dtrace_udplite 4 ,
|
||||
.Xr sctp 4 ,
|
||||
.Xr SDT 9
|
||||
.\" .Sh HISTORY
|
||||
|
||||
@ -24,7 +24,7 @@
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd February 10, 2018
|
||||
.Dd August 1, 2018
|
||||
.Dt DTRACE_TCP 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
@ -374,7 +374,9 @@ provider in Solaris.
|
||||
.Sh SEE ALSO
|
||||
.Xr dtrace 1 ,
|
||||
.Xr dtrace_ip 4 ,
|
||||
.Xr dtrace_sctp 4 ,
|
||||
.Xr dtrace_udp 4 ,
|
||||
.Xr dtrace_udplite 4 ,
|
||||
.Xr tcp 4 ,
|
||||
.Xr SDT 9
|
||||
.Sh HISTORY
|
||||
|
||||
@ -24,7 +24,7 @@
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd July 20, 2018
|
||||
.Dd August 1, 2018
|
||||
.Dt DTRACE_UDP 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
@ -189,7 +189,9 @@ provider in Solaris.
|
||||
.Sh SEE ALSO
|
||||
.Xr dtrace 1 ,
|
||||
.Xr dtrace_ip 4 ,
|
||||
.Xr dtrace_sctp 4 ,
|
||||
.Xr dtrace_tcp 4 ,
|
||||
.Xr dtrace_udplite 4 ,
|
||||
.Xr udp 4 ,
|
||||
.Xr SDT 9
|
||||
.Sh HISTORY
|
||||
|
||||
204
share/man/man4/dtrace_udplite.4
Normal file
204
share/man/man4/dtrace_udplite.4
Normal file
@ -0,0 +1,204 @@
|
||||
.\" Copyright (c) 2015 Mark Johnston <markj@FreeBSD.org>
|
||||
.\" Copyright (c) 2018 Michael Tuexen <tuexen@FreeBSD.org>
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" Redistribution and use in source and binary forms, with or without
|
||||
.\" modification, are permitted provided that the following conditions
|
||||
.\" are met:
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in the
|
||||
.\" documentation and/or other materials provided with the distribution.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd August 1, 2018
|
||||
.Dt DTRACE_UDPLITE 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm dtrace_udplite
|
||||
.Nd a DTrace provider for tracing events related to the UDP-Lite protocol
|
||||
.Sh SYNOPSIS
|
||||
.Fn udplite:::receive "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udplitesinfo_t *" \
|
||||
"udpliteinfo_t *"
|
||||
.Fn udplite:::send "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udplitesinfo_t *" \
|
||||
"udpliteinfo_t *"
|
||||
.Sh DESCRIPTION
|
||||
The DTrace
|
||||
.Nm udplite
|
||||
provider allows users to trace events in the
|
||||
.Xr udplite 4
|
||||
protocol implementation.
|
||||
The
|
||||
.Fn udplite:::send
|
||||
probe fires whenever the kernel prepares to transmit a UDP-Lite packet, and the
|
||||
.Fn udplite:::receive
|
||||
probe fires whenever the kernel receives a UDP-Lite packet, unless
|
||||
the UDP-Lite header is incomplete,
|
||||
the destination port is 0,
|
||||
the length field is invalid,
|
||||
or the checksum is wrong.
|
||||
The arguments to these probes can be used to obtain detailed information about
|
||||
the IP and UDP-Lite headers of the corresponding packet.
|
||||
.Sh ARGUMENTS
|
||||
The
|
||||
.Vt pktinfo_t
|
||||
argument is currently unimplemented and is included for compatibility with other
|
||||
implementations of this provider.
|
||||
Its fields are:
|
||||
.Bl -tag -width "uintptr_t pkt_addr" -offset indent
|
||||
.It Vt uintptr_t pkt_addr
|
||||
Always set to 0.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Vt csinfo_t
|
||||
argument is currently unimplemented and is included for compatibility with other
|
||||
implementations of this provider.
|
||||
Its fields are:
|
||||
.Bl -tag -width "uintptr_t cs_addr" -offset indent
|
||||
.It Vt uintptr_t cs_addr
|
||||
Always set to 0.
|
||||
.It Vt uint64_t cs_cid
|
||||
A pointer to the
|
||||
.Vt struct inpcb
|
||||
for this packet, or
|
||||
.Dv NULL .
|
||||
.It Vt pid_t cs_pid
|
||||
Always set to 0.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Vt ipinfo_t
|
||||
argument contains IP fields common to both IPv4 and IPv6 packets.
|
||||
Its fields are:
|
||||
.Bl -tag -width "uint32_t ip_plength" -offset indent
|
||||
.It Vt uint8_t ip_ver
|
||||
IP version of the packet, 4 for IPv4 packets and 6 for IPv6 packets.
|
||||
.It Vt uint32_t ip_plength
|
||||
IP payload size.
|
||||
This does not include the size of the IP header or IPv6 option headers.
|
||||
.It Vt string ip_saddr
|
||||
IP source address.
|
||||
.It Vt string ip_daddr
|
||||
IP destination address.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Vt udplitesinfo_t
|
||||
argument contains the state of the UDP-Lite connection associated with the packet.
|
||||
Its fields are:
|
||||
.Bl -tag -width "uintptr_t udplites_addr" -offset indent
|
||||
.It Vt uintptr_t udplites_addr
|
||||
Pointer to the
|
||||
.Vt struct inpcb
|
||||
containing the IP state for the associated socket.
|
||||
.It Vt uint16_t udplites_lport
|
||||
Local UDP-Lite port.
|
||||
.It Vt uint16_t udplites_rport
|
||||
Remote UDP-Lite port.
|
||||
.It Vt string udplites_laddr
|
||||
Local IPv4 or IPv6 address.
|
||||
.It Vt string udplites_raddr
|
||||
Remote IPv4 or IPv6 address.
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Vt udpliteinfo_t
|
||||
argument is the raw UDP-Lite header of the packet, with all fields in host order.
|
||||
Its fields are:
|
||||
.Bl -tag -width "struct udplitehdr *udplite_hdr" -offset indent
|
||||
.It Vt uint16_t udplite_sport
|
||||
Source UDP-Lite port.
|
||||
.It Vt uint16_t udplite_dport
|
||||
Destination UDP-Lite port.
|
||||
.It Vt uint16_t udplite_coverage
|
||||
Checksum coverage of the UDP-Lite header, in bytes, or 0 for full coverage.
|
||||
.It Vt uint16_t udplite_checksum
|
||||
A checksum of the UDP-Lite header and payload, or 0 if no checksum was calculated.
|
||||
.It Vt struct udplitehdr *udplite_hdr
|
||||
A pointer to the raw UDP-Lite header.
|
||||
.El
|
||||
.Sh FILES
|
||||
.Bl -tag -width "/usr/lib/dtrace/udplite.d" -compact
|
||||
.It Pa /usr/lib/dtrace/udplite.d
|
||||
DTrace type and translator definitions for the
|
||||
.Nm udplite
|
||||
provider.
|
||||
.El
|
||||
.Sh EXAMPLES
|
||||
The following script counts transmitted packets by destination port.
|
||||
.Bd -literal -offset indent
|
||||
udplite:::send
|
||||
{
|
||||
@num[args[4]->udplite_dport] = count();
|
||||
}
|
||||
.Ed
|
||||
.Pp
|
||||
This script will print some details of each UDP-Lite packet as it is sent or received
|
||||
by the kernel:
|
||||
.Bd -literal -offset indent
|
||||
#pragma D option quiet
|
||||
#pragma D option switchrate=10Hz
|
||||
|
||||
dtrace:::BEGIN
|
||||
{
|
||||
printf(" %10s %36s %-36s %6s\\n", "DELTA(us)", "SOURCE",
|
||||
"DEST", "COV");
|
||||
last = timestamp;
|
||||
}
|
||||
|
||||
udplite:::send
|
||||
{
|
||||
this->elapsed = (timestamp - last) / 1000;
|
||||
self->dest = strjoin(strjoin(args[2]->ip_daddr, ":"),
|
||||
lltostr(args[4]->udplite_dport));
|
||||
printf(" %10d %30s:%-5d -> %-36s %6d\\n", this->elapsed,
|
||||
args[2]->ip_saddr, args[4]->udplite_sport,
|
||||
self->dest, args[4]->udplite_coverage);
|
||||
last = timestamp;
|
||||
}
|
||||
|
||||
udplite:::receive
|
||||
{
|
||||
this->elapsed = (timestamp - last) / 1000;
|
||||
self->dest = strjoin(strjoin(args[2]->ip_saddr, ":"),
|
||||
lltostr(args[4]->udplite_sport));
|
||||
printf(" %10d %30s:%-5d <- %-36s %6d\\n", this->elapsed,
|
||||
args[2]->ip_daddr, args[4]->udplite_dport,
|
||||
self->dest, args[4]->udplite_coverage);
|
||||
last = timestamp;
|
||||
}
|
||||
.Ed
|
||||
.Sh SEE ALSO
|
||||
.Xr dtrace 1 ,
|
||||
.Xr dtrace_ip 4 ,
|
||||
.Xr dtrace_sctp 4 ,
|
||||
.Xr dtrace_tcp 4 ,
|
||||
.Xr dtrace_udp 4 ,
|
||||
.Xr udplite 4 ,
|
||||
.Xr SDT 9
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm udplite
|
||||
provider first appeared in
|
||||
.Fx
|
||||
12.0.
|
||||
.Sh AUTHORS
|
||||
This manual page was written by
|
||||
.An Mark Johnston Aq Mt markj@FreeBSD.org
|
||||
and
|
||||
.An Michael Tuexen Aq Mt tuexen@FreeBSD.org .
|
||||
@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
|
||||
SDT_PROVIDER_DEFINE(ip);
|
||||
SDT_PROVIDER_DEFINE(tcp);
|
||||
SDT_PROVIDER_DEFINE(udp);
|
||||
SDT_PROVIDER_DEFINE(udplite);
|
||||
|
||||
SDT_PROBE_DEFINE6_XLATE(ip, , , receive,
|
||||
"void *", "pktinfo_t *",
|
||||
@ -155,3 +156,17 @@ SDT_PROBE_DEFINE5_XLATE(udp, , , send,
|
||||
"uint8_t *", "ipinfo_t *",
|
||||
"struct inpcb *", "udpsinfo_t *",
|
||||
"struct udphdr *", "udpinfo_t *");
|
||||
|
||||
SDT_PROBE_DEFINE5_XLATE(udplite, , , receive,
|
||||
"void *", "pktinfo_t *",
|
||||
"struct inpcb *", "csinfo_t *",
|
||||
"uint8_t *", "ipinfo_t *",
|
||||
"struct inpcb *", "udplitesinfo_t *",
|
||||
"struct udphdr *", "udpliteinfo_t *");
|
||||
|
||||
SDT_PROBE_DEFINE5_XLATE(udplite, , , send,
|
||||
"void *", "pktinfo_t *",
|
||||
"struct inpcb *", "csinfo_t *",
|
||||
"uint8_t *", "ipinfo_t *",
|
||||
"struct inpcb *", "udplitesinfo_t *",
|
||||
"struct udphdr *", "udpliteinfo_t *");
|
||||
|
||||
@ -34,6 +34,8 @@
|
||||
SDT_PROBE6(ip, , , probe, arg0, arg1, arg2, arg3, arg4, arg5)
|
||||
#define UDP_PROBE(probe, arg0, arg1, arg2, arg3, arg4) \
|
||||
SDT_PROBE5(udp, , , probe, arg0, arg1, arg2, arg3, arg4)
|
||||
#define UDPLITE_PROBE(probe, arg0, arg1, arg2, arg3, arg4) \
|
||||
SDT_PROBE5(udplite, , , probe, arg0, arg1, arg2, arg3, arg4)
|
||||
#define TCP_PROBE1(probe, arg0) \
|
||||
SDT_PROBE1(tcp, , , probe, arg0)
|
||||
#define TCP_PROBE2(probe, arg0, arg1) \
|
||||
@ -50,6 +52,7 @@
|
||||
SDT_PROVIDER_DECLARE(ip);
|
||||
SDT_PROVIDER_DECLARE(tcp);
|
||||
SDT_PROVIDER_DECLARE(udp);
|
||||
SDT_PROVIDER_DECLARE(udplite);
|
||||
|
||||
SDT_PROBE_DECLARE(ip, , , receive);
|
||||
SDT_PROBE_DECLARE(ip, , , send);
|
||||
@ -72,4 +75,7 @@ SDT_PROBE_DECLARE(tcp, , , receive__autoresize);
|
||||
SDT_PROBE_DECLARE(udp, , , receive);
|
||||
SDT_PROBE_DECLARE(udp, , , send);
|
||||
|
||||
SDT_PROBE_DECLARE(udplite, , , receive);
|
||||
SDT_PROBE_DECLARE(udplite, , , send);
|
||||
|
||||
#endif
|
||||
|
||||
@ -594,8 +594,12 @@ udp_input(struct mbuf **mp, int *offp, int proto)
|
||||
|
||||
if ((n = m_copym(m, 0, M_COPYALL, M_NOWAIT)) !=
|
||||
NULL) {
|
||||
UDP_PROBE(receive, NULL, last, ip,
|
||||
last, uh);
|
||||
if (proto == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, last, ip,
|
||||
last, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, last, ip, last,
|
||||
uh);
|
||||
if (udp_append(last, ip, n, iphlen,
|
||||
udp_in)) {
|
||||
goto inp_lost;
|
||||
@ -629,7 +633,10 @@ udp_input(struct mbuf **mp, int *offp, int proto)
|
||||
INP_INFO_RUNLOCK_ET(pcbinfo, et);
|
||||
goto badunlocked;
|
||||
}
|
||||
UDP_PROBE(receive, NULL, last, ip, last, uh);
|
||||
if (proto == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, last, ip, last, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, last, ip, last, uh);
|
||||
if (udp_append(last, ip, m, iphlen, udp_in) == 0)
|
||||
INP_RUNLOCK(last);
|
||||
inp_lost:
|
||||
@ -685,7 +692,10 @@ udp_input(struct mbuf **mp, int *offp, int proto)
|
||||
inet_ntoa_r(ip->ip_dst, dst), ntohs(uh->uh_dport),
|
||||
inet_ntoa_r(ip->ip_src, src), ntohs(uh->uh_sport));
|
||||
}
|
||||
UDP_PROBE(receive, NULL, NULL, ip, NULL, uh);
|
||||
if (proto == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, NULL, ip, NULL, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, NULL, ip, NULL, uh);
|
||||
UDPSTAT_INC(udps_noport);
|
||||
if (m->m_flags & (M_BCAST | M_MCAST)) {
|
||||
UDPSTAT_INC(udps_noportbcast);
|
||||
@ -705,7 +715,10 @@ udp_input(struct mbuf **mp, int *offp, int proto)
|
||||
*/
|
||||
INP_RLOCK_ASSERT(inp);
|
||||
if (inp->inp_ip_minttl && inp->inp_ip_minttl > ip->ip_ttl) {
|
||||
UDP_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
if (proto == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
INP_RUNLOCK(inp);
|
||||
m_freem(m);
|
||||
return (IPPROTO_DONE);
|
||||
@ -721,7 +734,10 @@ udp_input(struct mbuf **mp, int *offp, int proto)
|
||||
}
|
||||
}
|
||||
|
||||
UDP_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
if (proto == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, inp, ip, inp, uh);
|
||||
if (udp_append(inp, ip, m, iphlen, udp_in) == 0)
|
||||
INP_RUNLOCK(inp);
|
||||
return (IPPROTO_DONE);
|
||||
@ -1526,7 +1542,10 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
|
||||
INP_HASH_WUNLOCK(pcbinfo);
|
||||
else if (unlock_udbinfo == UH_RLOCKED)
|
||||
INP_HASH_RUNLOCK_ET(pcbinfo, et);
|
||||
UDP_PROBE(send, NULL, inp, &ui->ui_i, inp, &ui->ui_u);
|
||||
if (pr == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(send, NULL, inp, &ui->ui_i, inp, &ui->ui_u);
|
||||
else
|
||||
UDP_PROBE(send, NULL, inp, &ui->ui_i, inp, &ui->ui_u);
|
||||
error = ip_output(m, inp->inp_options,
|
||||
(unlock_inp == UH_WLOCKED ? &inp->inp_route : NULL), ipflags,
|
||||
inp->inp_moptions, inp);
|
||||
|
||||
@ -29,6 +29,17 @@
|
||||
#ifndef _NETINET_UDPLITE_H_
|
||||
#define _NETINET_UDPLITE_H_
|
||||
|
||||
/*
|
||||
* UDP-Lite protocol header.
|
||||
* Per RFC 3828, July, 2004.
|
||||
*/
|
||||
struct udplitehdr {
|
||||
u_short udplite_sport; /* UDO-Lite source port */
|
||||
u_short udplite_dport; /* UDP-Lite destination port */
|
||||
u_short udplite_coverage; /* UDP-Lite checksum coverage */
|
||||
u_short udplite_checksum; /* UDP-Lite checksum */
|
||||
};
|
||||
|
||||
/*
|
||||
* User-settable options (used with setsockopt).
|
||||
*/
|
||||
|
||||
@ -388,8 +388,12 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
|
||||
NULL) {
|
||||
INP_RLOCK(last);
|
||||
if (__predict_true(last->inp_flags2 & INP_FREED) == 0) {
|
||||
UDP_PROBE(receive, NULL, last, ip6,
|
||||
last, uh);
|
||||
if (nxt == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, last,
|
||||
ip6, last, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, last,
|
||||
ip6, last, uh);
|
||||
if (udp6_append(last, n, off, fromsa))
|
||||
goto inp_lost;
|
||||
}
|
||||
@ -422,7 +426,10 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
|
||||
}
|
||||
INP_RLOCK(last);
|
||||
if (__predict_true(last->inp_flags2 & INP_FREED) == 0) {
|
||||
UDP_PROBE(receive, NULL, last, ip6, last, uh);
|
||||
if (nxt == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, last, ip6, last, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, last, ip6, last, uh);
|
||||
if (udp6_append(last, m, off, fromsa) == 0)
|
||||
INP_RUNLOCK(last);
|
||||
} else
|
||||
@ -483,7 +490,10 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
|
||||
ip6_sprintf(ip6bufs, &ip6->ip6_src),
|
||||
ntohs(uh->uh_sport));
|
||||
}
|
||||
UDP_PROBE(receive, NULL, NULL, ip6, NULL, uh);
|
||||
if (nxt == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, NULL, ip6, NULL, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, NULL, ip6, NULL, uh);
|
||||
UDPSTAT_INC(udps_noport);
|
||||
if (m->m_flags & M_MCAST) {
|
||||
printf("UDP6: M_MCAST is set in a unicast packet.\n");
|
||||
@ -504,7 +514,10 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
}
|
||||
UDP_PROBE(receive, NULL, inp, ip6, inp, uh);
|
||||
if (nxt == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(receive, NULL, inp, ip6, inp, uh);
|
||||
else
|
||||
UDP_PROBE(receive, NULL, inp, ip6, inp, uh);
|
||||
if (udp6_append(inp, m, off, fromsa) == 0)
|
||||
INP_RUNLOCK(inp);
|
||||
return (IPPROTO_DONE);
|
||||
@ -919,7 +932,10 @@ udp6_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr6,
|
||||
flags |= IP_NODEFAULTFLOWID;
|
||||
#endif
|
||||
|
||||
UDP_PROBE(send, NULL, inp, ip6, inp, udp6);
|
||||
if (nxt == IPPROTO_UDPLITE)
|
||||
UDPLITE_PROBE(send, NULL, inp, ip6, inp, udp6);
|
||||
else
|
||||
UDP_PROBE(send, NULL, inp, ip6, inp, udp6);
|
||||
UDPSTAT_INC(udps_opackets);
|
||||
error = ip6_output(m, optp, &inp->inp_route6, flags,
|
||||
inp->in6p_moptions, NULL, inp);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user