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# $NetBSD: t_ldp_regen.sh,v 1.4 2014/09/01 06:38:35 gson Exp $
#
# Copyright (c) 2013 The NetBSD Foundation, Inc.
# 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
#
# IP/MPLS & LDP label reallocation test
# Create 4 routers connected like this: R1--R2--R3--R4--
# The goal is to push packets from R1 to the R4 shmif1 (the right one) interface
# Enable MPLS forwarding on R2
# Disable IP forwarding and enable MPLS forwarding on R3
# Start ldpd and wait for adjancencies to come up
# Add an alias on shmif1 on R4 for which we already have a route on R3
# Now: * R4 should install label IMPLNULL for that prefix
# * R3 should realloc the target label from IMPLNULL to something else
RUMP_SERVER1=unix://./r1
RUMP_SERVER2=unix://./r2
RUMP_SERVER3=unix://./r3
RUMP_SERVER4=unix://./r4
RUMP_LIBS="-lrumpnet -lrumpnet_net -lrumpnet_netmpls -lrumpnet_netinet -lrumpnet_netinet6 -lrumpnet_shmif"
LDP_FLAGS=""
atf_test_case ldp_regen cleanup
ldp_regen_head() {
atf_set "descr" "IP/MPLS and LDP label regeneration test"
atf_set "require.progs" "rump_server"
atf_set "use.fs" "true"
}
newaddr_and_ping() {
# Add new address on R4
RUMP_SERVER=${RUMP_SERVER4} atf_check -s exit:0 \
rump.ifconfig shmif1 10.0.5.1/24 alias
# Now ldpd on R5 should take notice of the new route and announce it
# to R4's ldpd. ldpd on R4 should verify that the next hop
# corresponds to its routing table and change its tag entry
RUMP_SERVER=${RUMP_SERVER1} atf_check -s exit:0 -o ignore -e ignore \
rump.ping -n -o -w 5 10.0.5.1
}
create_servers() {
# allows us to run as normal user
ulimit -r 400
atf_check -s exit:0 rump_server ${RUMP_LIBS} ${RUMP_SERVER1}
atf_check -s exit:0 rump_server ${RUMP_LIBS} ${RUMP_SERVER2}
atf_check -s exit:0 rump_server ${RUMP_LIBS} ${RUMP_SERVER3}
atf_check -s exit:0 rump_server ${RUMP_LIBS} ${RUMP_SERVER4}
# LDP HIJACK
export RUMPHIJACK=path=/rump,socket=all,sysctl=yes
export LD_PRELOAD=/usr/lib/librumphijack.so
# Setup first server
export RUMP_SERVER=${RUMP_SERVER1}
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr ./shdom1
atf_check -s exit:0 rump.ifconfig shmif0 10.0.1.1/24
atf_check -s exit:0 rump.ifconfig mpls0 create up
atf_check -s exit:0 rump.sysctl -q -w net.inet.ip.forwarding=0
atf_check -s exit:0 rump.route -q add 10.0.4.0/24 10.0.1.2
atf_check -s exit:0 rump.route -q add 10.0.5.0/24 10.0.1.2
atf_check -s exit:0 /usr/sbin/ldpd ${LDP_FLAGS}
# Setup second server
export RUMP_SERVER=${RUMP_SERVER2}
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr ./shdom1
atf_check -s exit:0 rump.ifconfig shmif0 10.0.1.2/24
atf_check -s exit:0 rump.ifconfig shmif1 create
atf_check -s exit:0 rump.ifconfig shmif1 linkstr ./shdom2
atf_check -s exit:0 rump.ifconfig shmif1 10.0.2.1/24
atf_check -s exit:0 rump.ifconfig mpls0 create up
atf_check -s exit:0 rump.sysctl -q -w net.mpls.accept=1
atf_check -s exit:0 rump.sysctl -q -w net.mpls.forwarding=1
# This one should still do ip forwarding because it announces IMPLNULL
# for the 10.0.1.0/24 subnet
atf_check -s exit:0 rump.route -q add 10.0.4.0/24 10.0.2.2
atf_check -s exit:0 rump.route -q add 10.0.5.0/24 10.0.2.2
atf_check -s exit:0 /usr/sbin/ldpd ${LDP_FLAGS}
# Setup third server
export RUMP_SERVER=${RUMP_SERVER3}
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr ./shdom2
atf_check -s exit:0 rump.ifconfig shmif0 10.0.2.2/24
atf_check -s exit:0 rump.ifconfig shmif1 create
atf_check -s exit:0 rump.ifconfig shmif1 linkstr ./shdom3
atf_check -s exit:0 rump.ifconfig shmif1 10.0.3.1/24
atf_check -s exit:0 rump.ifconfig mpls0 create up
atf_check -s exit:0 rump.sysctl -q -w net.mpls.accept=1
atf_check -s exit:0 rump.sysctl -q -w net.mpls.forwarding=1
atf_check -s exit:0 rump.sysctl -q -w net.inet.ip.forwarding=0
atf_check -s exit:0 rump.route -q add 10.0.1.0/24 10.0.2.1
atf_check -s exit:0 rump.route -q add 10.0.4.0/24 10.0.3.2
atf_check -s exit:0 rump.route -q add 10.0.5.0/24 10.0.3.2
atf_check -s exit:0 /usr/sbin/ldpd ${LDP_FLAGS}
# Setup fourth server
export RUMP_SERVER=${RUMP_SERVER4}
atf_check -s exit:0 rump.ifconfig shmif0 create
atf_check -s exit:0 rump.ifconfig shmif0 linkstr ./shdom3
atf_check -s exit:0 rump.ifconfig shmif0 10.0.3.2/24
atf_check -s exit:0 rump.ifconfig shmif1 create
atf_check -s exit:0 rump.ifconfig shmif1 linkstr ./shdom4
atf_check -s exit:0 rump.ifconfig shmif1 10.0.4.1/24
atf_check -s exit:0 rump.sysctl -q -w net.inet.ip.forwarding=0
atf_check -s exit:0 rump.ifconfig mpls0 create up
atf_check -s exit:0 rump.route -q add 10.0.1.0/24 10.0.3.1
atf_check -s exit:0 /usr/sbin/ldpd ${LDP_FLAGS}
unset RUMP_SERVER
unset LD_PRELOAD
unset RUMPHIJACK
}
wait_ldp_ok() {
RUMP_SERVER=${RUMP_SERVER1} atf_check -s exit:0 -o ignore -e ignore \
rump.ping -o -w 60 10.0.4.1
}
docleanup() {
RUMP_SERVER=${RUMP_SERVER1} rump.halt
RUMP_SERVER=${RUMP_SERVER2} rump.halt
RUMP_SERVER=${RUMP_SERVER3} rump.halt
RUMP_SERVER=${RUMP_SERVER4} rump.halt
}
ldp_regen_body() {
if sysctl machdep.cpu_brand | grep QEMU >/dev/null 2>&1
then
atf_skip "unreliable under qemu, skip until PR kern/43997 fixed"
fi
create_servers
wait_ldp_ok
newaddr_and_ping
}
ldp_regen_cleanup() {
docleanup
}
atf_init_test_cases() {
atf_add_test_case ldp_regen
}
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