[PATCHv2 net-next 02/14] selftests/net: convert arp_ndisc_evict_nocarrier.sh to run it in unique namespace

Hangbin Liu
2023-11-30T04:01:25Z

]# ./arp_ndisc_evict_nocarrier.sh
run arp_evict_nocarrier=1 test
ok
run arp_evict_nocarrier=0 test
ok
run all.arp_evict_nocarrier=0 test
ok
run ndisc_evict_nocarrier=1 test
ok
run ndisc_evict_nocarrier=0 test
ok
run all.ndisc_evict_nocarrier=0 test
ok

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
.../net/arp_ndisc_evict_nocarrier.sh | 46 +++++++------------
1 file changed, 16 insertions(+), 30 deletions(-)

diff --git a/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh b/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh
index 4a110bb01e53..92eb880c52f2 100755
--- a/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh
+++ b/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh
@@ -12,7 +12,8 @@
# {arp,ndisc}_evict_nocarrer=0 should still contain the single ARP/ND entry
#

-readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
+source lib.sh
+
readonly V4_ADDR0=10.0.10.1
readonly V4_ADDR1=10.0.10.2
readonly V6_ADDR0=2001:db8:91::1
@@ -22,43 +23,29 @@ ret=0

cleanup_v6()
{
- ip netns del me
- ip netns del peer
+ cleanup_ns ${me} ${peer}

sysctl -w net.ipv6.conf.veth1.ndisc_evict_nocarrier=1 >/dev/null 2>&1
sysctl -w net.ipv6.conf.all.ndisc_evict_nocarrier=1 >/dev/null 2>&1
}

-create_ns()
-{
- local n=${1}
-
- ip netns del ${n} 2>/dev/null
-
- ip netns add ${n}
- ip netns set ${n} $((nsid++))
- ip -netns ${n} link set lo up
-}
-
-
setup_v6() {
- create_ns me
- create_ns peer
+ setup_ns me peer

- IP="ip -netns me"
+ IP="ip -netns ${me}"

$IP li add veth1 type veth peer name veth2
$IP li set veth1 up
$IP -6 addr add $V6_ADDR0/64 dev veth1 nodad
- $IP li set veth2 netns peer up
- ip -netns peer -6 addr add $V6_ADDR1/64 dev veth2 nodad
+ $IP li set veth2 netns ${peer} up
+ ip -netns ${peer} -6 addr add $V6_ADDR1/64 dev veth2 nodad

- ip netns exec me sysctl -w $1 >/dev/null 2>&1
+ ip netns exec ${me} sysctl -w $1 >/dev/null 2>&1

# Establish an ND cache entry
- ip netns exec me ping -6 -c1 -Iveth1 $V6_ADDR1 >/dev/null 2>&1
+ ip netns exec ${me} ping -6 -c1 -Iveth1 $V6_ADDR1 >/dev/null 2>&1
# Should have the veth1 entry in ND table
- ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+ ip netns exec ${me} ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
if [ $? -ne 0 ]; then
cleanup_v6
echo "failed"
@@ -66,11 +53,11 @@ setup_v6() {
fi

# Set veth2 down, which will put veth1 in NOCARRIER state
- ip netns exec peer ip link set veth2 down
+ ip netns exec ${peer} ip link set veth2 down
}

setup_v4() {
- ip netns add "${PEER_NS}"
+ setup_ns PEER_NS
ip link add name veth0 type veth peer name veth1
ip link set dev veth0 up
ip link set dev veth1 netns "${PEER_NS}"
@@ -99,8 +86,7 @@ setup_v4() {
cleanup_v4() {
ip neigh flush dev veth0
ip link del veth0
- local -r ns="$(ip netns list|grep $PEER_NS)"
- [ -n "$ns" ] && ip netns del $ns 2>/dev/null
+ cleanup_ns $PEER_NS

sysctl -w net.ipv4.conf.veth0.arp_evict_nocarrier=1 >/dev/null 2>&1
sysctl -w net.ipv4.conf.all.arp_evict_nocarrier=1 >/dev/null 2>&1
@@ -163,7 +149,7 @@ run_ndisc_evict_nocarrier_enabled() {

setup_v6 "net.ipv6.conf.veth1.ndisc_evict_nocarrier=1"

- ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+ ip netns exec ${me} ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1

if [ $? -eq 0 ];then
echo "failed"
@@ -180,7 +166,7 @@ run_ndisc_evict_nocarrier_disabled() {

setup_v6 "net.ipv6.conf.veth1.ndisc_evict_nocarrier=0"

- ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+ ip netns exec ${me} ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1

if [ $? -eq 0 ];then
echo "ok"
@@ -197,7 +183,7 @@ run_ndisc_evict_nocarrier_disabled_all() {

setup_v6 "net.ipv6.conf.all.ndisc_evict_nocarrier=0"

- ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+ ip netns exec ${me} ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1

if [ $? -eq 0 ];then
echo "ok"
--
2.41.0