Add several ATF tests that deal with multiple fibs. They're described in
several different PRs, but the tests share some common code, so I'm committing them together. sbin/ifconfig/tests sbin/ifconfig/tests/fibs_test.sh sbin/ifconfig/tests/Makefile sbin/ifconfig/Makefile Add fibs_test.sh, which regresses bin/187551 tests/sys/netinet tests/sys/netinet/fibs_test.sh tests/sys/netinet/udp_dontroute.c tests/sys/netinet/Makefile tests/sys/Makefile Add fibs_test.sh, which regresses kern/167947, kern/187552 kern/187549, kern/187550, and kern/187553 etc/mtree/BSD.tests.dist Add newly created directories PR: bin/187551 PR: kern/167947 PR: kern/187552 PR: kern/187549 PR: kern/187550 PR: kern/187553 Discussed with: melifaro MFC after: 3 weeks Sponsored by: Spectra Logic Corporation
This commit is contained in:
asomers
parent
0b3f2d5e48
commit
c03f0a88b5
@ -75,6 +75,8 @@
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..
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growfs
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..
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ifconfig
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..
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mdconfig
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..
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..
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@ -91,6 +93,8 @@
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sys
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kern
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..
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netinet
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..
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..
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usr.bin
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apply
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@ -63,4 +63,8 @@ MAN= ifconfig.8
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CFLAGS+= -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings -Wnested-externs
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WARNS?= 2
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.if ${MK_TESTS} != "no"
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SUBDIR+= tests
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.endif
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.include <bsd.prog.mk>
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9
sbin/ifconfig/tests/Makefile
Normal file
9
sbin/ifconfig/tests/Makefile
Normal file
@ -0,0 +1,9 @@
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# $FreeBSD$
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.include <bsd.own.mk>
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TESTSDIR= ${TESTSBASE}/sbin/ifconfig
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ATF_TESTS_SH= fibs_test
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.include <bsd.test.mk>
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126
sbin/ifconfig/tests/fibs_test.sh
Executable file
126
sbin/ifconfig/tests/fibs_test.sh
Executable file
@ -0,0 +1,126 @@
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#
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# Copyright (c) 2014 Spectra Logic Corporation
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions, and the following disclaimer,
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# without modification.
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# 2. Redistributions in binary form must reproduce at minimum a disclaimer
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# substantially similar to the "NO WARRANTY" disclaimer below
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# ("Disclaimer") and any redistribution must be conditioned upon
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# including a substantially similar Disclaimer requirement for further
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# binary redistribution.
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#
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# NO WARRANTY
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGES.
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#
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# Authors: Alan Somers (Spectra Logic Corporation)
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#
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# $FreeBSD$
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# Regression test for bin/187551
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atf_test_case process_fib cleanup
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process_fib_head()
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{
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atf_set "descr" "ifconfig will set its process fib whenever configuring an interface with nondefault fib"
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atf_set "require.user" "root"
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atf_set "require.config" "fibs"
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}
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process_fib_body()
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{
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atf_expect_fail "bin/187551 ifconfig should change its process fib when configuring an interface with nondefault fib"
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# Configure the TAP interface to use an RFC5737 nonrouteable address
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# and a non-default fib
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ADDR="192.0.2.2"
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SUBNET="192.0.2.0"
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MASK="24"
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# Check system configuration
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if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
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atf_skip "This test requires net.add_addr_allfibs=0"
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fi
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get_fibs 1
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# Configure a TAP interface
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get_tap
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ktrace ifconfig $TAP ${ADDR}/${MASK} fib $FIB0
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if kdump -s | egrep -q 'CALL[[:space:]]+setfib'; then
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atf_pass
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else
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atf_fail "ifconfig never called setfib(2)"
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fi
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}
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process_fib_cleanup()
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{
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cleanup_tap
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}
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atf_init_test_cases()
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{
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atf_add_test_case process_fib
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}
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# parameter numfibs The number of fibs to lookup
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get_fibs()
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{
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NUMFIBS=$1
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net_fibs=`sysctl -n net.fibs`
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i=0
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while [ $i -lt "$NUMFIBS" ]; do
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fib=`atf_config_get "fibs" | \
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awk -v i=$(( i + 1 )) '{print $i}'`
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echo "fib is ${fib}"
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eval FIB${i}=${fib}
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if [ "$fib" -ge "$net_fibs" ]; then
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atf_skip "The ${i}th configured fib is ${fib}, which is not less than net.fibs, which is ${net_fibs}"
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fi
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i=$(( $i + 1 ))
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done
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}
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# Creates a new tap(4) interface, registers it for cleanup, and returns the
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# name via the environment variable TAP
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get_tap()
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{
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local TAPN=0
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while ! ifconfig tap${TAPN} create > /dev/null 2>&1; do
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if [ "$TAPN" -ge 8 ]; then
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atf_skip "Could not create a tap(4) interface"
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else
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TAPN=$(($TAPN + 1))
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fi
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done
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local TAPD=tap${TAPN}
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# Record the TAP device so we can clean it up later
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echo ${TAPD} >> "tap_devices_to_cleanup"
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TAP=${TAPD}
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}
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cleanup_tap()
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{
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for TAPD in `cat "tap_devices_to_cleanup"`; do
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ifconfig ${TAPD} destroy
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done
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}
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@ -5,6 +5,7 @@
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.PATH: ${.CURDIR}/..
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TESTS_SUBDIRS+= kern
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TESTS_SUBDIRS+= netinet
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TESTSDIR= ${TESTSBASE}/sys
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KYUAFILE= yes
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12
tests/sys/netinet/Makefile
Normal file
12
tests/sys/netinet/Makefile
Normal file
@ -0,0 +1,12 @@
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# $FreeBSD$
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TESTSDIR= ${TESTSBASE}/sys/netinet
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BINDIR= ${TESTSDIR}
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ATF_TESTS_SH+= fibs_test
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PROG= udp_dontroute
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SRCS= udp_dontroute.c
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NO_MAN=
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WARNS?= 6
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.include <bsd.test.mk>
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371
tests/sys/netinet/fibs_test.sh
Executable file
371
tests/sys/netinet/fibs_test.sh
Executable file
@ -0,0 +1,371 @@
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#
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# Copyright (c) 2014 Spectra Logic Corporation
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions, and the following disclaimer,
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# without modification.
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# 2. Redistributions in binary form must reproduce at minimum a disclaimer
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# substantially similar to the "NO WARRANTY" disclaimer below
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# ("Disclaimer") and any redistribution must be conditioned upon
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# including a substantially similar Disclaimer requirement for further
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# binary redistribution.
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#
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# NO WARRANTY
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGES.
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#
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# Authors: Alan Somers (Spectra Logic Corporation)
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#
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# $FreeBSD$
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# All of the tests in this file requires the test-suite config variable "fibs"
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# to be defined to a space-delimited list of FIBs that may be used for testing.
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# arpresolve should check the interface fib for routes to a target when
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# creating an ARP table entry. This is a regression for kern/167947, where
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# arpresolve only checked the default route.
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#
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# Outline:
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# Create two tap(4) interfaces
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# Simulate a crossover cable between them by using net/socat
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# Use nping (from security/nmap) to send an ICMP echo request from one
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# interface to the other, spoofing the source IP. The source IP must be
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# spoofed, or else it will already have an entry in the arp table.
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# Check whether an arp entry exists for the spoofed IP
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atf_test_case arpresolve_checks_interface_fib cleanup
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arpresolve_checks_interface_fib_head()
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{
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atf_set "descr" "arpresolve should check the interface fib, not the default fib, for routes"
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atf_set "require.user" "root"
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atf_set "require.config" "fibs"
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atf_set "require.progs" "socat nping"
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}
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arpresolve_checks_interface_fib_body()
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{
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atf_expect_fail "kern/167947 arpresolve checks only the default FIB for the interface route"
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# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
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# and a non-default fib
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ADDR0="192.0.2.2"
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ADDR1="192.0.2.3"
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SUBNET="192.0.2.0"
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# Due to bug TBD (regressed by multiple_fibs_on_same_subnet) we need
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# diffferent subnet masks, or FIB1 won't have a subnet route.
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MASK0="24"
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MASK1="25"
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# Spoof a MAC that is reserved per RFC7042
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SPOOF_ADDR="192.0.2.4"
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SPOOF_MAC="00:00:5E:00:53:00"
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# Check system configuration
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if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
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atf_skip "This test requires net.add_addr_allfibs=0"
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fi
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get_fibs 2
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# Configure TAP interfaces
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setup_tap "$FIB0" ${ADDR0} ${MASK0}
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TAP0=$TAP
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setup_tap "$FIB1" ${ADDR1} ${MASK1}
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TAP1=$TAP
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# Simulate a crossover cable
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socat /dev/${TAP0} /dev/${TAP1} &
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SOCAT_PID=$!
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echo ${SOCAT_PID} >> "processes_to_kill"
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# Send an ICMP echo request with a spoofed source IP
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setfib 2 nping -c 1 -e ${TAP0} -S ${SPOOF_ADDR} \
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--source-mac ${SPOOF_MAC} --icmp --icmp-type "echo-request" \
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--icmp-code 0 --icmp-id 0xdead --icmp-seq 1 --data 0xbeef \
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${ADDR1}
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# For informational and debugging purposes only, look for the
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# characteristic error message
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dmesg | grep "llinfo.*${SPOOF_ADDR}"
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# Check that the ARP entry exists
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atf_check -o match:"${SPOOF_ADDR}.*expires" setfib 3 arp ${SPOOF_ADDR}
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}
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arpresolve_checks_interface_fib_cleanup()
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{
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for PID in `cat "processes_to_kill"`; do
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kill $PID
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done
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cleanup_tap
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}
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# Regression test for kern/187549
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atf_test_case loopback_and_network_routes_on_nondefault_fib cleanup
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loopback_and_network_routes_on_nondefault_fib_head()
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{
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atf_set "descr" "When creating and deleting loopback routes, use the interface's fib"
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atf_set "require.user" "root"
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atf_set "require.config" "fibs"
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}
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loopback_and_network_routes_on_nondefault_fib_body()
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{
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atf_expect_fail "kern/187549 Host and network routes for a new interface appear in the wrong FIB"
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# Configure the TAP interface to use an RFC5737 nonrouteable address
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# and a non-default fib
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ADDR="192.0.2.2"
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SUBNET="192.0.2.0"
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MASK="24"
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# Check system configuration
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if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
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atf_skip "This test requires net.add_addr_allfibs=0"
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fi
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get_fibs 1
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# Configure a TAP interface
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setup_tap ${FIB0} ${ADDR} ${MASK}
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# Check whether the host route exists in only the correct FIB
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setfib ${FIB0} netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0"
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if [ 0 -ne $? ]; then
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setfib ${FIB0} netstat -rn -f inet
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atf_fail "Host route did not appear in the correct FIB"
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fi
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setfib 0 netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0"
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if [ 0 -eq $? ]; then
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setfib 0 netstat -rn -f inet
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atf_fail "Host route appeared in the wrong FIB"
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fi
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# Check whether the network route exists in only the correct FIB
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setfib ${FIB0} netstat -rn -f inet | \
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grep -q "^${SUBNET}/${MASK}.*${TAPD}"
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if [ 0 -ne $? ]; then
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setfib ${FIB0} netstat -rn -f inet
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atf_fail "Network route did not appear in the correct FIB"
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fi
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setfib 0 netstat -rn -f inet | \
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grep -q "^${SUBNET}/${MASK}.*${TAPD}"
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if [ 0 -eq $? ]; then
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setfib ${FIB0} netstat -rn -f inet
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atf_fail "Network route appeared in the wrong FIB"
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fi
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}
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loopback_and_network_routes_on_nondefault_fib_cleanup()
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{
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cleanup_tap
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}
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# Regression test for kern/187552
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atf_test_case default_route_with_multiple_fibs_on_same_subnet cleanup
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default_route_with_multiple_fibs_on_same_subnet_head()
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{
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atf_set "descr" "Multiple interfaces on the same subnet but with different fibs can both have default routes"
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atf_set "require.user" "root"
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atf_set "require.config" "fibs"
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}
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default_route_with_multiple_fibs_on_same_subnet_body()
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{
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atf_expect_fail "kern/187552 default route uses the wrong interface when multiple interfaces have the same subnet but different fibs"
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# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
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# and a non-default fib
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ADDR0="192.0.2.2"
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ADDR1="192.0.2.3"
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GATEWAY="192.0.2.1"
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SUBNET="192.0.2.0"
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MASK="24"
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# Check system configuration
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if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
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atf_skip "This test requires net.add_addr_allfibs=0"
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fi
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get_fibs 2
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# Configure TAP interfaces
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setup_tap "$FIB0" ${ADDR0} ${MASK}
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TAP0=$TAP
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setup_tap "$FIB1" ${ADDR1} ${MASK}
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TAP1=$TAP
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# Attempt to add default routes
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setfib ${FIB0} route add default ${GATEWAY}
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setfib ${FIB1} route add default ${GATEWAY}
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# Verify that the default route exists for both fibs, with their
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# respective interfaces.
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atf_check -o match:"^default.*${TAP0}$" \
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setfib ${FIB0} netstat -rn -f inet
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atf_check -o match:"^default.*${TAP1}$" \
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setfib ${FIB1} netstat -rn -f inet
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}
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default_route_with_multiple_fibs_on_same_subnet_cleanup()
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{
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cleanup_tap
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}
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# Regression test for kern/187550
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atf_test_case subnet_route_with_multiple_fibs_on_same_subnet cleanup
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subnet_route_with_multiple_fibs_on_same_subnet_head()
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{
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atf_set "descr" "Multiple FIBs can have subnet routes for the same subnet"
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atf_set "require.user" "root"
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atf_set "require.config" "fibs"
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}
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subnet_route_with_multiple_fibs_on_same_subnet_body()
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{
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atf_expect_fail "kern/187550 Multiple interfaces on different FIBs but the same subnet don't all have a subnet route"
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# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
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# and a non-default fib
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ADDR0="192.0.2.2"
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ADDR1="192.0.2.3"
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SUBNET="192.0.2.0"
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MASK="24"
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# Check system configuration
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if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
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atf_skip "This test requires net.add_addr_allfibs=0"
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fi
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get_fibs 2
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# Configure TAP interfaces
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setup_tap "$FIB0" ${ADDR0} ${MASK}
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setup_tap "$FIB1" ${ADDR1} ${MASK}
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# Check that a subnet route exists on both fibs
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atf_check -o ignore setfib "$FIB0" route get $ADDR1
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atf_check -o ignore setfib "$FIB1" route get $ADDR0
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}
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|
||||
subnet_route_with_multiple_fibs_on_same_subnet_cleanup()
|
||||
{
|
||||
cleanup_tap
|
||||
}
|
||||
|
||||
# Test that source address selection works correctly for UDP packets with
|
||||
# SO_DONTROUTE set that are sent on non-default FIBs.
|
||||
# This bug was discovered with "setfib 1 netperf -t UDP_STREAM -H some_host"
|
||||
# Regression test for kern/187553
|
||||
atf_test_case udp_dontroute cleanup
|
||||
udp_dontroute_head()
|
||||
{
|
||||
atf_set "descr" "Source address selection for UDP packets with SO_DONTROUTE on non-default FIBs works"
|
||||
atf_set "require.user" "root"
|
||||
atf_set "require.config" "fibs"
|
||||
}
|
||||
|
||||
udp_dontroute_body()
|
||||
{
|
||||
atf_expect_fail "kern/187553 Source address selection for UDP packets with SO_DONTROUTE uses the default FIB"
|
||||
# Configure the TAP interface to use an RFC5737 nonrouteable address
|
||||
# and a non-default fib
|
||||
ADDR="192.0.2.2"
|
||||
SUBNET="192.0.2.0"
|
||||
MASK="24"
|
||||
# Use a different IP on the same subnet as the target
|
||||
TARGET="192.0.2.100"
|
||||
|
||||
# Check system configuration
|
||||
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
|
||||
atf_skip "This test requires net.add_addr_allfibs=0"
|
||||
fi
|
||||
get_fibs 1
|
||||
|
||||
# Configure a TAP interface
|
||||
setup_tap ${FIB0} ${ADDR} ${MASK}
|
||||
|
||||
# Send a UDP packet with SO_DONTROUTE. In the failure case, it will
|
||||
# return ENETUNREACH
|
||||
SRCDIR=`atf_get_srcdir`
|
||||
atf_check -o ignore setfib ${FIB0} ${SRCDIR}/udp_dontroute ${TARGET}
|
||||
}
|
||||
|
||||
udp_dontroute_cleanup()
|
||||
{
|
||||
cleanup_tap
|
||||
}
|
||||
|
||||
|
||||
atf_init_test_cases()
|
||||
{
|
||||
atf_add_test_case arpresolve_checks_interface_fib
|
||||
atf_add_test_case loopback_and_network_routes_on_nondefault_fib
|
||||
atf_add_test_case default_route_with_multiple_fibs_on_same_subnet
|
||||
atf_add_test_case subnet_route_with_multiple_fibs_on_same_subnet
|
||||
atf_add_test_case udp_dontroute
|
||||
}
|
||||
|
||||
# Looks up one or more fibs from the configuration data and validates them.
|
||||
# Returns the results in the env varilables FIB0, FIB1, etc.
|
||||
|
||||
# parameter numfibs The number of fibs to lookup
|
||||
get_fibs()
|
||||
{
|
||||
NUMFIBS=$1
|
||||
net_fibs=`sysctl -n net.fibs`
|
||||
i=0
|
||||
while [ $i -lt "$NUMFIBS" ]; do
|
||||
fib=`atf_config_get "fibs" | \
|
||||
awk -v i=$(( i + 1 )) '{print $i}'`
|
||||
echo "fib is ${fib}"
|
||||
eval FIB${i}=${fib}
|
||||
if [ "$fib" -ge "$net_fibs" ]; then
|
||||
atf_skip "The ${i}th configured fib is ${fib}, which is not less than net.fibs, which is ${net_fibs}"
|
||||
fi
|
||||
i=$(( $i + 1 ))
|
||||
done
|
||||
}
|
||||
|
||||
# Creates a new tap(4) interface, registers it for cleanup, and returns the
|
||||
# name via the environment variable TAP
|
||||
get_tap()
|
||||
{
|
||||
local TAPN=0
|
||||
while ! ifconfig tap${TAPN} create > /dev/null 2>&1; do
|
||||
if [ "$TAPN" -ge 8 ]; then
|
||||
atf_skip "Could not create a tap(4) interface"
|
||||
else
|
||||
TAPN=$(($TAPN + 1))
|
||||
fi
|
||||
done
|
||||
local TAPD=tap${TAPN}
|
||||
# Record the TAP device so we can clean it up later
|
||||
echo ${TAPD} >> "tap_devices_to_cleanup"
|
||||
TAP=${TAPD}
|
||||
}
|
||||
|
||||
# Create a tap(4) interface, configure it, and register it for cleanup.
|
||||
# parameters:
|
||||
# fib
|
||||
# IP address
|
||||
# Netmask in number of bits (eg 24 or 8)
|
||||
# Return: the tap interface name as the env variable TAP
|
||||
setup_tap()
|
||||
{
|
||||
local FIB=$1
|
||||
local ADDR=$2
|
||||
local MASK=$3
|
||||
get_tap
|
||||
echo setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB
|
||||
setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB
|
||||
}
|
||||
|
||||
cleanup_tap()
|
||||
{
|
||||
for TAPD in `cat "tap_devices_to_cleanup"`; do
|
||||
ifconfig ${TAPD} destroy
|
||||
done
|
||||
}
|
||||
85
tests/sys/netinet/udp_dontroute.c
Normal file
85
tests/sys/netinet/udp_dontroute.c
Normal file
@ -0,0 +1,85 @@
|
||||
/*
|
||||
* Copyright (c) 2014 Spectra Logic Corporation
|
||||
* 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,
|
||||
* without modification.
|
||||
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||||
* substantially similar to the "NO WARRANTY" disclaimer below
|
||||
* ("Disclaimer") and any redistribution must be conditioned upon
|
||||
* including a substantially similar Disclaimer requirement for further
|
||||
* binary redistribution.
|
||||
*
|
||||
* NO WARRANTY
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
|
||||
*
|
||||
* Authors: Alan Somers (Spectra Logic Corporation)
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/in.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/*
|
||||
* Sends a single UDP packet to the provided address, with SO_DONTROUTE set
|
||||
* I couldn't find a way to do this with builtin utilities like nc(1)
|
||||
*/
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
struct sockaddr_in dst;
|
||||
int s;
|
||||
int opt;
|
||||
int ret;
|
||||
const char* buf = "Hello, World!";
|
||||
|
||||
if (argc != 2) {
|
||||
fprintf(stderr, "Usage: %s ip_address\n", argv[0]);
|
||||
exit(2);
|
||||
}
|
||||
s = socket(PF_INET, SOCK_DGRAM, 0);
|
||||
if (s < 0)
|
||||
err(errno, "socket");
|
||||
opt = 1;
|
||||
|
||||
ret = setsockopt(s, SOL_SOCKET, SO_DONTROUTE, &opt, sizeof(opt));
|
||||
if (ret == -1)
|
||||
err(errno, "setsockopt(SO_DONTROUTE)");
|
||||
|
||||
dst.sin_len = sizeof(dst);
|
||||
dst.sin_family = AF_INET;
|
||||
dst.sin_port = htons(46120);
|
||||
dst.sin_addr.s_addr = inet_addr(argv[1]);
|
||||
if (dst.sin_addr.s_addr == htonl(INADDR_NONE)) {
|
||||
fprintf(stderr, "Invalid address: %s\n", argv[1]);
|
||||
exit(2);
|
||||
}
|
||||
ret = sendto(s, buf, strlen(buf), 0, (struct sockaddr*)&dst,
|
||||
dst.sin_len);
|
||||
if (ret == -1)
|
||||
err(errno, "sendto");
|
||||
|
||||
return (0);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user