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linux-stable/tools/testing/selftests/bpf/test_tunnel.sh
Stanislav Fomichev 486d3f22c0 selftests/bpf: fail test_tunnel.sh if subtests fail 
Right now test_tunnel.sh always exits with success even if some
of the subtests fail. Since the output is very verbose, it's
hard to spot the issues with subtests. Let's fail the script
if any subtest fails.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-05-28 11:08:57 +02:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# End-to-end eBPF tunnel test suite
# The script tests BPF network tunnel implementation.
#
# Topology:
# ---------
# root namespace | at_ns0 namespace
# |
# ----------- | -----------
# | tnl dev | | | tnl dev | (overlay network)
# ----------- | -----------
# metadata-mode | native-mode
# with bpf |
# |
# ---------- | ----------
# | veth1 | --------- | veth0 | (underlay network)
# ---------- peer ----------
#
#
# Device Configuration
# --------------------
# Root namespace with metadata-mode tunnel + BPF
# Device names and addresses:
# veth1 IP: 172.16.1.200, IPv6: 00::22 (underlay)
# tunnel dev <type>11, ex: gre11, IPv4: 10.1.1.200 (overlay)
#
# Namespace at_ns0 with native tunnel
# Device names and addresses:
# veth0 IPv4: 172.16.1.100, IPv6: 00::11 (underlay)
# tunnel dev <type>00, ex: gre00, IPv4: 10.1.1.100 (overlay)
#
#
# End-to-end ping packet flow
# ---------------------------
# Most of the tests start by namespace creation, device configuration,
# then ping the underlay and overlay network. When doing 'ping 10.1.1.100'
# from root namespace, the following operations happen:
# 1) Route lookup shows 10.1.1.100/24 belongs to tnl dev, fwd to tnl dev.
# 2) Tnl device's egress BPF program is triggered and set the tunnel metadata,
# with remote_ip=172.16.1.200 and others.
# 3) Outer tunnel header is prepended and route the packet to veth1's egress
# 4) veth0's ingress queue receive the tunneled packet at namespace at_ns0
# 5) Tunnel protocol handler, ex: vxlan_rcv, decap the packet
# 6) Forward the packet to the overlay tnl dev
PING_ARG="-c 3 -w 10 -q"
ret=0
GREEN='\033[0;92m'
RED='\033[0;31m'
NC='\033[0m' # No Color
config_device()
{
ip netns add at_ns0
ip link add veth0 type veth peer name veth1
ip link set veth0 netns at_ns0
ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
ip link set dev veth1 up mtu 1500
ip addr add dev veth1 172.16.1.200/24
}
add_gre_tunnel()
{
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq key 2 \
local 172.16.1.100 remote 172.16.1.200
ip netns exec at_ns0 ip link set dev $DEV_NS up
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
# root namespace
ip link add dev $DEV type $TYPE key 2 external
ip link set dev $DEV up
ip addr add dev $DEV 10.1.1.200/24
}
add_ip6gretap_tunnel()
{
# assign ipv6 address
ip netns exec at_ns0 ip addr add ::11/96 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
ip addr add dev veth1 ::22/96
ip link set dev veth1 up
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq flowlabel 0xbcdef key 2 \
local ::11 remote ::22
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 ip addr add dev $DEV_NS fc80::100/96
ip netns exec at_ns0 ip link set dev $DEV_NS up
# root namespace
ip link add dev $DEV type $TYPE external
ip addr add dev $DEV 10.1.1.200/24
ip addr add dev $DEV fc80::200/24
ip link set dev $DEV up
}
add_erspan_tunnel()
{
# at_ns0 namespace
if [ "$1" == "v1" ]; then
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq key 2 \
local 172.16.1.100 remote 172.16.1.200 \
erspan_ver 1 erspan 123
else
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq key 2 \
local 172.16.1.100 remote 172.16.1.200 \
erspan_ver 2 erspan_dir egress erspan_hwid 3
fi
ip netns exec at_ns0 ip link set dev $DEV_NS up
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
# root namespace
ip link add dev $DEV type $TYPE external
ip link set dev $DEV up
ip addr add dev $DEV 10.1.1.200/24
}
add_ip6erspan_tunnel()
{
# assign ipv6 address
ip netns exec at_ns0 ip addr add ::11/96 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
ip addr add dev veth1 ::22/96
ip link set dev veth1 up
# at_ns0 namespace
if [ "$1" == "v1" ]; then
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq key 2 \
local ::11 remote ::22 \
erspan_ver 1 erspan 123
else
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE seq key 2 \
local ::11 remote ::22 \
erspan_ver 2 erspan_dir egress erspan_hwid 7
fi
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 ip link set dev $DEV_NS up
# root namespace
ip link add dev $DEV type $TYPE external
ip addr add dev $DEV 10.1.1.200/24
ip link set dev $DEV up
}
add_vxlan_tunnel()
{
# Set static ARP entry here because iptables set-mark works
# on L3 packet, as a result not applying to ARP packets,
# causing errors at get_tunnel_{key/opt}.
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE \
id 2 dstport 4789 gbp remote 172.16.1.200
ip netns exec at_ns0 \
ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
# root namespace
ip link add dev $DEV type $TYPE external gbp dstport 4789
ip link set dev $DEV address 52:54:00:d9:02:00 up
ip addr add dev $DEV 10.1.1.200/24
arp -s 10.1.1.100 52:54:00:d9:01:00
}
add_ip6vxlan_tunnel()
{
#ip netns exec at_ns0 ip -4 addr del 172.16.1.100 dev veth0
ip netns exec at_ns0 ip -6 addr add ::11/96 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
#ip -4 addr del 172.16.1.200 dev veth1
ip -6 addr add dev veth1 ::22/96
ip link set dev veth1 up
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE id 22 dstport 4789 \
local ::11 remote ::22
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 ip link set dev $DEV_NS up
# root namespace
ip link add dev $DEV type $TYPE external dstport 4789
ip addr add dev $DEV 10.1.1.200/24
ip link set dev $DEV up
}
add_geneve_tunnel()
{
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE \
id 2 dstport 6081 remote 172.16.1.200
ip netns exec at_ns0 ip link set dev $DEV_NS up
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
# root namespace
ip link add dev $DEV type $TYPE dstport 6081 external
ip link set dev $DEV up
ip addr add dev $DEV 10.1.1.200/24
}
add_ip6geneve_tunnel()
{
ip netns exec at_ns0 ip addr add ::11/96 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
ip addr add dev veth1 ::22/96
ip link set dev veth1 up
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE id 22 \
remote ::22 # geneve has no local option
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 ip link set dev $DEV_NS up
# root namespace
ip link add dev $DEV type $TYPE external
ip addr add dev $DEV 10.1.1.200/24
ip link set dev $DEV up
}
add_ipip_tunnel()
{
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE \
local 172.16.1.100 remote 172.16.1.200
ip netns exec at_ns0 ip link set dev $DEV_NS up
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
# root namespace
ip link add dev $DEV type $TYPE external
ip link set dev $DEV up
ip addr add dev $DEV 10.1.1.200/24
}
add_ipip6tnl_tunnel()
{
ip netns exec at_ns0 ip addr add ::11/96 dev veth0
ip netns exec at_ns0 ip link set dev veth0 up
ip addr add dev veth1 ::22/96
ip link set dev veth1 up
# at_ns0 namespace
ip netns exec at_ns0 \
ip link add dev $DEV_NS type $TYPE \
local ::11 remote ::22
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
ip netns exec at_ns0 ip link set dev $DEV_NS up
# root namespace
ip link add dev $DEV type $TYPE external
ip addr add dev $DEV 10.1.1.200/24
ip link set dev $DEV up
}
test_gre()
{
TYPE=gretap
DEV_NS=gretap00
DEV=gretap11
ret=0
check $TYPE
config_device
add_gre_tunnel
attach_bpf $DEV gre_set_tunnel gre_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ip6gre()
{
TYPE=ip6gre
DEV_NS=ip6gre00
DEV=ip6gre11
ret=0
check $TYPE
config_device
# reuse the ip6gretap function
add_ip6gretap_tunnel
attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
# underlay
ping6 $PING_ARG ::11
# overlay: ipv4 over ipv6
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
ping $PING_ARG 10.1.1.100
check_err $?
# overlay: ipv6 over ipv6
ip netns exec at_ns0 ping6 $PING_ARG fc80::200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ip6gretap()
{
TYPE=ip6gretap
DEV_NS=ip6gretap00
DEV=ip6gretap11
ret=0
check $TYPE
config_device
add_ip6gretap_tunnel
attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
# underlay
ping6 $PING_ARG ::11
# overlay: ipv4 over ipv6
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
ping $PING_ARG 10.1.1.100
check_err $?
# overlay: ipv6 over ipv6
ip netns exec at_ns0 ping6 $PING_ARG fc80::200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_erspan()
{
TYPE=erspan
DEV_NS=erspan00
DEV=erspan11
ret=0
check $TYPE
config_device
add_erspan_tunnel $1
attach_bpf $DEV erspan_set_tunnel erspan_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ip6erspan()
{
TYPE=ip6erspan
DEV_NS=ip6erspan00
DEV=ip6erspan11
ret=0
check $TYPE
config_device
add_ip6erspan_tunnel $1
attach_bpf $DEV ip4ip6erspan_set_tunnel ip4ip6erspan_get_tunnel
ping6 $PING_ARG ::11
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_vxlan()
{
TYPE=vxlan
DEV_NS=vxlan00
DEV=vxlan11
ret=0
check $TYPE
config_device
add_vxlan_tunnel
attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ip6vxlan()
{
TYPE=vxlan
DEV_NS=ip6vxlan00
DEV=ip6vxlan11
ret=0
check $TYPE
config_device
add_ip6vxlan_tunnel
ip link set dev veth1 mtu 1500
attach_bpf $DEV ip6vxlan_set_tunnel ip6vxlan_get_tunnel
# underlay
ping6 $PING_ARG ::11
# ip4 over ip6
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: ip6$TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: ip6$TYPE"${NC}
}
test_geneve()
{
TYPE=geneve
DEV_NS=geneve00
DEV=geneve11
ret=0
check $TYPE
config_device
add_geneve_tunnel
attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ip6geneve()
{
TYPE=geneve
DEV_NS=ip6geneve00
DEV=ip6geneve11
ret=0
check $TYPE
config_device
add_ip6geneve_tunnel
attach_bpf $DEV ip6geneve_set_tunnel ip6geneve_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: ip6$TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: ip6$TYPE"${NC}
}
test_ipip()
{
TYPE=ipip
DEV_NS=ipip00
DEV=ipip11
ret=0
check $TYPE
config_device
add_ipip_tunnel
ip link set dev veth1 mtu 1500
attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
test_ipip6()
{
TYPE=ip6tnl
DEV_NS=ipip6tnl00
DEV=ipip6tnl11
ret=0
check $TYPE
config_device
add_ipip6tnl_tunnel
ip link set dev veth1 mtu 1500
attach_bpf $DEV ipip6_set_tunnel ipip6_get_tunnel
# underlay
ping6 $PING_ARG ::11
# ip4 over ip6
ping $PING_ARG 10.1.1.100
check_err $?
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: $TYPE"${NC}
return 1
fi
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
setup_xfrm_tunnel()
{
auth=0x$(printf '1%.0s' {1..40})
enc=0x$(printf '2%.0s' {1..32})
spi_in_to_out=0x1
spi_out_to_in=0x2
# at_ns0 namespace
# at_ns0 -> root
ip netns exec at_ns0 \
ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
spi $spi_in_to_out reqid 1 mode tunnel \
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
ip netns exec at_ns0 \
ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir out \
tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
mode tunnel
# root -> at_ns0
ip netns exec at_ns0 \
ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
spi $spi_out_to_in reqid 2 mode tunnel \
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
ip netns exec at_ns0 \
ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir in \
tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
mode tunnel
# address & route
ip netns exec at_ns0 \
ip addr add dev veth0 10.1.1.100/32
ip netns exec at_ns0 \
ip route add 10.1.1.200 dev veth0 via 172.16.1.200 \
src 10.1.1.100
# root namespace
# at_ns0 -> root
ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
spi $spi_in_to_out reqid 1 mode tunnel \
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir in \
tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
mode tunnel
# root -> at_ns0
ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
spi $spi_out_to_in reqid 2 mode tunnel \
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir out \
tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
mode tunnel
# address & route
ip addr add dev veth1 10.1.1.200/32
ip route add 10.1.1.100 dev veth1 via 172.16.1.100 src 10.1.1.200
}
test_xfrm_tunnel()
{
config_device
> /sys/kernel/debug/tracing/trace
setup_xfrm_tunnel
tc qdisc add dev veth1 clsact
tc filter add dev veth1 proto ip ingress bpf da obj test_tunnel_kern.o \
sec xfrm_get_state
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
sleep 1
grep "reqid 1" /sys/kernel/debug/tracing/trace
check_err $?
grep "spi 0x1" /sys/kernel/debug/tracing/trace
check_err $?
grep "remote ip 0xac100164" /sys/kernel/debug/tracing/trace
check_err $?
cleanup
if [ $ret -ne 0 ]; then
echo -e ${RED}"FAIL: xfrm tunnel"${NC}
return 1
fi
echo -e ${GREEN}"PASS: xfrm tunnel"${NC}
}
attach_bpf()
{
DEV=$1
SET=$2
GET=$3
tc qdisc add dev $DEV clsact
tc filter add dev $DEV egress bpf da obj test_tunnel_kern.o sec $SET
tc filter add dev $DEV ingress bpf da obj test_tunnel_kern.o sec $GET
}
cleanup()
{
ip netns delete at_ns0 2> /dev/null
ip link del veth1 2> /dev/null
ip link del ipip11 2> /dev/null
ip link del ipip6tnl11 2> /dev/null
ip link del gretap11 2> /dev/null
ip link del ip6gre11 2> /dev/null
ip link del ip6gretap11 2> /dev/null
ip link del vxlan11 2> /dev/null
ip link del ip6vxlan11 2> /dev/null
ip link del geneve11 2> /dev/null
ip link del ip6geneve11 2> /dev/null
ip link del erspan11 2> /dev/null
ip link del ip6erspan11 2> /dev/null
ip xfrm policy delete dir out src 10.1.1.200/32 dst 10.1.1.100/32 2> /dev/null
ip xfrm policy delete dir in src 10.1.1.100/32 dst 10.1.1.200/32 2> /dev/null
ip xfrm state delete src 172.16.1.100 dst 172.16.1.200 proto esp spi 0x1 2> /dev/null
ip xfrm state delete src 172.16.1.200 dst 172.16.1.100 proto esp spi 0x2 2> /dev/null
}
cleanup_exit()
{
echo "CATCH SIGKILL or SIGINT, cleanup and exit"
cleanup
exit 0
}
check()
{
ip link help 2>&1 | grep -q "\s$1\s"
if [ $? -ne 0 ];then
echo "SKIP $1: iproute2 not support"
cleanup
return 1
fi
}
enable_debug()
{
echo 'file ip_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
echo 'file ip6_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
echo 'file vxlan.c +p' > /sys/kernel/debug/dynamic_debug/control
echo 'file geneve.c +p' > /sys/kernel/debug/dynamic_debug/control
echo 'file ipip.c +p' > /sys/kernel/debug/dynamic_debug/control
}
check_err()
{
if [ $ret -eq 0 ]; then
ret=$1
fi
}
bpf_tunnel_test()
{
local errors=0
echo "Testing GRE tunnel..."
test_gre
errors=$(( $errors + $? ))
echo "Testing IP6GRE tunnel..."
test_ip6gre
errors=$(( $errors + $? ))
echo "Testing IP6GRETAP tunnel..."
test_ip6gretap
errors=$(( $errors + $? ))
echo "Testing ERSPAN tunnel..."
test_erspan v2
errors=$(( $errors + $? ))
echo "Testing IP6ERSPAN tunnel..."
test_ip6erspan v2
errors=$(( $errors + $? ))
echo "Testing VXLAN tunnel..."
test_vxlan
errors=$(( $errors + $? ))
echo "Testing IP6VXLAN tunnel..."
test_ip6vxlan
errors=$(( $errors + $? ))
echo "Testing GENEVE tunnel..."
test_geneve
errors=$(( $errors + $? ))
echo "Testing IP6GENEVE tunnel..."
test_ip6geneve
errors=$(( $errors + $? ))
echo "Testing IPIP tunnel..."
test_ipip
errors=$(( $errors + $? ))
echo "Testing IPIP6 tunnel..."
test_ipip6
errors=$(( $errors + $? ))
echo "Testing IPSec tunnel..."
test_xfrm_tunnel
errors=$(( $errors + $? ))
return $errors
}
trap cleanup 0 3 6
trap cleanup_exit 2 9
cleanup
bpf_tunnel_test
if [ $? -ne 0 ]; then
echo -e "$(basename $0): ${RED}FAIL${NC}"
exit 1
fi
echo -e "$(basename $0): ${GREEN}PASS${NC}"
exit 0
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