selftests: netfilter: nft_fib.sh: move to lib.sh infra

Also lower ping interval, wait times (helpers get called several times)
and set nodad for ipv6 addresses: 20s down to 4s.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-14-fw@strlen.deSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/netfilter/nft_fib.sh

@@ -3,43 +3,25 @@
 # This tests the fib expression.
 #
 # Kselftest framework requirement - SKIP code is 4.
-ksft_skip=4
+
+source lib.sh
+
 ret=0
 
-sfx=$(mktemp -u "XXXXXXXX")
-ns1="ns1-$sfx"
-ns2="ns2-$sfx"
-nsrouter="nsrouter-$sfx"
 timeout=4
 
 log_netns=$(sysctl -n net.netfilter.nf_log_all_netns)
 
 cleanup()
 {
-	ip netns del ${ns1}
-	ip netns del ${ns2}
-	ip netns del ${nsrouter}
+	cleanup_all_ns
 
 	[ $log_netns -eq 0 ] && sysctl -q net.netfilter.nf_log_all_netns=$log_netns
 }
 
-nft --version > /dev/null 2>&1
-if [ $? -ne 0 ];then
-	echo "SKIP: Could not run test without nft tool"
-	exit $ksft_skip
-fi
+checktool "nft --version" "run test without nft"
 
-ip -Version > /dev/null 2>&1
-if [ $? -ne 0 ];then
-	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
-fi
-
-ip netns add ${nsrouter}
-if [ $? -ne 0 ];then
-	echo "SKIP: Could not create net namespace"
-	exit $ksft_skip
-fi
+setup_ns nsrouter ns1 ns2
 
 trap cleanup EXIT
 
@@ -50,8 +32,6 @@ if [ $? -eq 0 ]; then
 fi
 
 sysctl -q net.netfilter.nf_log_all_netns=1
-ip netns add ${ns1}
-ip netns add ${ns2}
 
 load_ruleset() {
 	local netns=$1
@@ -95,8 +75,7 @@ EOF
 }
 
 check_drops() {
-	dmesg | grep -q ' nft_rpfilter: '
-	if [ $? -eq 0 ]; then
+	if dmesg | grep -q ' nft_rpfilter: ';then
 		dmesg | grep ' nft_rpfilter: '
 		echo "FAIL: rpfilter did drop packets"
 		return 1
@@ -130,35 +109,30 @@ load_ruleset ${nsrouter}
 load_ruleset ${ns1}
 load_ruleset ${ns2}
 
-ip link add veth0 netns ${nsrouter} type veth peer name eth0 netns ${ns1} > /dev/null 2>&1
-if [ $? -ne 0 ];then
+if ! ip link add veth0 netns "$nsrouter" type veth peer name eth0 netns "$ns1" > /dev/null 2>&1; then
     echo "SKIP: No virtual ethernet pair device support in kernel"
     exit $ksft_skip
 fi
 ip link add veth1 netns ${nsrouter} type veth peer name eth0 netns ${ns2}
 
-ip -net ${nsrouter} link set lo up
 ip -net ${nsrouter} link set veth0 up
 ip -net ${nsrouter} addr add 10.0.1.1/24 dev veth0
-ip -net ${nsrouter} addr add dead:1::1/64 dev veth0
+ip -net ${nsrouter} addr add dead:1::1/64 dev veth0 nodad
 
 ip -net ${nsrouter} link set veth1 up
 ip -net ${nsrouter} addr add 10.0.2.1/24 dev veth1
-ip -net ${nsrouter} addr add dead:2::1/64 dev veth1
+ip -net ${nsrouter} addr add dead:2::1/64 dev veth1 nodad
 
-ip -net ${ns1} link set lo up
 ip -net ${ns1} link set eth0 up
-
-ip -net ${ns2} link set lo up
 ip -net ${ns2} link set eth0 up
 
 ip -net ${ns1} addr add 10.0.1.99/24 dev eth0
-ip -net ${ns1} addr add dead:1::99/64 dev eth0
+ip -net ${ns1} addr add dead:1::99/64 dev eth0 nodad
 ip -net ${ns1} route add default via 10.0.1.1
 ip -net ${ns1} route add default via dead:1::1
 
 ip -net ${ns2} addr add 10.0.2.99/24 dev eth0
-ip -net ${ns2} addr add dead:2::99/64 dev eth0
+ip -net ${ns2} addr add dead:2::99/64 dev eth0 nodad
 ip -net ${ns2} route add default via 10.0.2.1
 ip -net ${ns2} route add default via dead:2::1
 
@@ -166,17 +140,13 @@ test_ping() {
   local daddr4=$1
   local daddr6=$2
 
-  ip netns exec ${ns1} ping -c 1 -q $daddr4 > /dev/null
-  ret=$?
-  if [ $ret -ne 0 ];then
+  if ! ip netns exec "$ns1" ping -c 1 -q "$daddr4" > /dev/null; then
 	check_drops
 	echo "FAIL: ${ns1} cannot reach $daddr4, ret $ret" 1>&2
 	return 1
   fi
 
-  ip netns exec ${ns1} ping -c 3 -q $daddr6 > /dev/null
-  ret=$?
-  if [ $ret -ne 0 ];then
+  if ! ip netns exec "$ns1" ping -c 1 -q "$daddr6" > /dev/null; then
 	check_drops
 	echo "FAIL: ${ns1} cannot reach $daddr6, ret $ret" 1>&2
 	return 1
@@ -191,8 +161,6 @@ ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth1.forwarding=1 > /dev/null
 ip netns exec ${nsrouter} sysctl net.ipv4.conf.all.rp_filter=0 > /dev/null
 ip netns exec ${nsrouter} sysctl net.ipv4.conf.veth0.rp_filter=0 > /dev/null
 
-sleep 3
-
 test_ping 10.0.2.1 dead:2::1 || exit 1
 check_drops || exit 1
 
@@ -210,12 +178,12 @@ ip -net ${ns1} addr del 10.0.1.99/24 dev eth0
 ip -net ${ns1} addr del dead:1::99/64 dev eth0
 
 ip -net ${ns1} addr add 10.0.2.99/24 dev eth0
-ip -net ${ns1} addr add dead:2::99/64 dev eth0
+ip -net "$ns1" addr add dead:2::99/64 dev eth0 nodad
 
 ip -net ${ns1} route add default via 10.0.2.1
 ip -net ${ns1} -6 route add default via dead:2::1
 
-ip -net ${nsrouter} addr add dead:2::1/64 dev veth0
+ip -net "$nsrouter" addr add dead:2::1/64 dev veth0 nodad
 
 # switch to ruleset that doesn't log, this time
 # its expected that this does drop the packets.
@@ -227,11 +195,10 @@ load_ruleset_count ${nsrouter}
 check_fib_counter 0 ${nsrouter} 1.1.1.1 || exit 1
 check_fib_counter 0 ${nsrouter} 1c3::c01d || exit 1
 
-ip netns exec ${ns1} ping -c 1 -W 1 -q 1.1.1.1 > /dev/null
+ip netns exec "$ns1" ping -W 0.5 -c 1 -q 1.1.1.1 > /dev/null
 check_fib_counter 1 ${nsrouter} 1.1.1.1 || exit 1
 
-sleep 2
-ip netns exec ${ns1} ping -c 3 -q 1c3::c01d > /dev/null
+ip netns exec "$ns1" ping -W 0.5 -i 0.1 -c 3 -q 1c3::c01d > /dev/null
 check_fib_counter 3 ${nsrouter} 1c3::c01d || exit 1
 
 # delete all rules
@@ -240,7 +207,7 @@ ip netns exec ${ns2} nft flush ruleset
 ip netns exec ${nsrouter} nft flush ruleset
 
 ip -net ${ns1} addr add 10.0.1.99/24 dev eth0
-ip -net ${ns1} addr add dead:1::99/64 dev eth0
+ip -net "$ns1" addr add dead:1::99/64 dev eth0 nodad
 
 ip -net ${ns1} addr del 10.0.2.99/24 dev eth0
 ip -net ${ns1} addr del dead:2::99/64 dev eth0