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netpfil tests: Add too many fragments test for pf, ipfw and ipf

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Add test for checking that the packets are dropped if it is fragmented into
more than the defined value.

Submitted by:	Ahsan Barkati
Reviewed by:	kp
Sponsored by:	Google, Inc. (GSoC 2019)
Differential Revision:	https://reviews.freebsd.org/D21307
This commit is contained in:
Kristof Provost 2019-08-20 14:46:12 +00:00
parent df3d236d96
commit 3e1ebe7fb8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=351249
2 changed files with 82 additions and 1 deletions
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3
tests/sys/netpfil/common/Makefile
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@ -8,7 +8,8 @@ TESTSDIR= ${TESTSBASE}/sys/netpfil/common
ATF_TESTS_SH+= \
pass_block \
nat \
tos
tos \
fragments
${PACKAGE}FILES+= \
utils.subr \

80
tests/sys/netpfil/common/fragments.sh Normal file
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@ -0,0 +1,80 @@
#-
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2019 Ahsan Barkati
#
# 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.
#
# $FreeBSD$
#
. $(atf_get_srcdir)/utils.subr
. $(atf_get_srcdir)/runner.subr
fragments_head()
{
atf_set descr 'Too many fragments test'
atf_set require.user root
}
fragments_body()
{
firewall=$1
firewall_init $firewall
epair=$(vnet_mkepair)
ifconfig ${epair}b inet 192.0.2.1/24 up
vnet_mkjail iron ${epair}a
jexec iron ifconfig ${epair}a 192.0.2.2/24 up
ifconfig ${epair}b mtu 200
jexec iron ifconfig ${epair}a mtu 200
firewall_config "iron" ${firewall} \
"pf" \
"scrub all fragment reassemble" \
"ipfw" \
"ipfw -q add 100 reass all from any to any in" \
"ipf" \
"pass in all with frags"
jexec iron sysctl net.inet.ip.maxfragsperpacket=1024
atf_check -s exit:0 -o ignore ping -c 1 -t 1 192.0.2.2
atf_check -s exit:0 -o ignore ping -c 1 -s 800 192.0.2.2
# Too many fragments should fail
atf_check -s exit:2 -o ignore ping -c 1 -s 20000 192.0.2.2
}
fragments_cleanup()
{
firewall=$1
firewall_cleanup $firewall
}
setup_tests \
"fragments" \
"pf" \
"ipfw" \
"ipf"