# $NetBSD: t_mpls_fw64.sh,v 1.5 2020/04/01 01:49:26 christos Exp $
#
# Copyright (c) 2015 The NetBSD Foundation, Inc.
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# Test MPLS encap/decap and forwarding using INET6 as encapsulated protocol
# Setup four routers connected like this: R1---R2---R3---R4--
# Goal is to be able to ping from R1 the outermost interface of R4
# Disable net.inet[6].ip[6].forwarding, enable net.mpls.forwarding
# Use IPv6 between R1-R2-R3 and IPv4 between R3-R4
# As we use IPv4 on last link we should use only expl.null there
# because implicit null will assume IPv4 (as the next-hop)
# But we can use impl null on R2-R1 link because stack will correctly
# guess IPv6 (from next-hop)
# Add route on R1 in order to encapsulate into MPLS the IP6 packets with
#     destination equal to R4 right hand side interface
# Add MPLS routes on R2 in order to forward frames belonging to that FEC to R3
# Add MPLS expl.null route on R3 for that FEC, pointing to R4
# Do the same for the reverse direction (R4 to R1)
# ping6 from R1 to R4 right hand side interface


configservers()
{

	# Setup the 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 inet6 fd00:1234::1/64 alias
	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.inet6.ip6.forwarding=0
	atf_check -s exit:0 rump.route -q add -inet6 fd00:1234:0:3::/64 \
	    -ifa fd00:1234::1 \
	    -ifp mpls0 -tag 25 -inet6 fd00:1234::2

	# Setup the 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 inet6 fd00:1234::2/64 alias
	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 inet6 fd00:1234:0:1::1/64 alias
	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.inet6.ip6.forwarding=0
	atf_check -s exit:0 rump.route -q add -mpls 25 -tag 30 \
	    -inet6 fd00:1234:0:1::2
	atf_check -s exit:0 rump.route -q add -mpls 27 -tag ${1} -inet6 \
	    fd00:1234::1

	# Setup the 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 inet6 fd00:1234:0:1::2/64 alias
	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 inet 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.inet6.ip6.forwarding=0
	atf_check -s exit:0 rump.sysctl -q -w net.inet.ip.forwarding=0
	atf_check -s exit:0 rump.route -q add -mpls 30 -tag 2 \
	    -inet 10.0.3.2
	atf_check -s exit:0 rump.route -q add -mpls 26 -tag 27 \
	    -inet6 fd00:1234:0:1::1

	# Setup the 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 inet 10.0.3.2
	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 inet6 fd00:1234:0:3::1/64 alias
	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.inet6.ip6.forwarding=0
	atf_check -s exit:0 rump.sysctl -q -w net.inet.ip.forwarding=0
	atf_check -s exit:0 rump.route -q add -inet6 fd00:1234::/64 \
	    -ifa fd00:1234:0:3::1 \
	    -ifp mpls0 -tag 26 -inet 10.0.3.1

	unset RUMP_SERVER
}

doping()
{

	export RUMP_SERVER=${RUMP_SERVER1}
	atf_check -s exit:0 \
	    -o match:" bytes from fd00:1234::2, icmp_seq=" \
	    rump.ping6 -n -o -X 2 fd00:1234::2
	export RUMP_SERVER=${RUMP_SERVER2}
	atf_check -s exit:0 \
	    -o match:" bytes from fd00:1234:0:1::2, icmp_seq=" \
	    rump.ping6 -n -o -X 2 fd00:1234:0:1::2
	export RUMP_SERVER=${RUMP_SERVER3}
	atf_check -s exit:0 \
	    -o match:" bytes from 10.0.3.2: icmp_seq" \
	    rump.ping -n -o -w 2 10.0.3.2
	export RUMP_SERVER=${RUMP_SERVER1}
	atf_check -s exit:0 \
	    -o match:" bytes from fd00:1234:0:3::1, icmp_seq=" \
	    rump.ping6 -n -o -X 2 fd00:1234:0:3::1
	unset RUMP_SERVER
}

do_check_route()
{

	export RUMP_SERVER=${RUMP_SERVER1}
	atf_check -s exit:0 \
	    -o match:"^fd00:1234:0:3::/64.+fd00:1234::2.+25.+mpls0" \
	    rump.netstat -nrT
	unset RUMP_SERVER
}

atf_test_case mplsfw64_impl cleanup
mplsfw64_impl_head()
{

	atf_set "descr" "IP6/MPLS test using impl. NULL labels in mixed env."
	atf_set "require.progs" "rump_server"
}

mplsfw64_impl_body()
{

	dostart
	configservers 3
	do_check_route
	doping
}

mplsfw64_impl_cleanup()
{

	docleanup
}


atf_test_case mplsfw64_expl cleanup
mplsfw64_expl_head()
{

	atf_set "descr" "IP6/MPLS test using explicit NULL labels in mixed env."
	atf_set "require.progs" "rump_server"
}

mplsfw64_expl_body()
{

	dostart
	configservers 2
	do_check_route
	doping
}

mplsfw64_expl_cleanup()
{

	docleanup
}


atf_init_test_cases()
{ 

	atf_add_test_case mplsfw64_impl
	atf_add_test_case mplsfw64_expl
}