#!/bin/bash # SPDX-License-Identifier: GPL-2.0 NS=ns IP4=172.16.0.1/24 TGT4=172.16.0.2 IP6=2001:db8:1::1/64 TGT6=2001:db8:1::2 MARK=1000 cleanup() { ip netns del $NS } trap cleanup EXIT # Namespaces ip netns add $NS ip netns exec $NS sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null # Connectivity ip -netns $NS link add type dummy ip -netns $NS link set dev dummy0 up ip -netns $NS addr add $IP4 dev dummy0 ip -netns $NS addr add $IP6 dev dummy0 ip -netns $NS rule add fwmark $MARK lookup 300 ip -6 -netns $NS rule add fwmark $MARK lookup 300 ip -netns $NS route add prohibit any table 300 ip -6 -netns $NS route add prohibit any table 300 # Test BAD=0 TOTAL=0 check_result() { ((TOTAL++)) if [ $1 -ne $2 ]; then echo " Case $3 returned $1, expected $2" ((BAD++)) fi } for ovr in setsock cmsg both; do for i in 4 6; do [ $i == 4 ] && TGT=$TGT4 || TGT=$TGT6 for p in u i r; do [ $p == "u" ] && prot=UDP [ $p == "i" ] && prot=ICMP [ $p == "r" ] && prot=RAW [ $ovr == "setsock" ] && m="-M" [ $ovr == "cmsg" ] && m="-m" [ $ovr == "both" ] && m="-M $MARK -m" ip netns exec $NS ./cmsg_sender -$i -p $p $m $((MARK + 1)) $TGT 1234 check_result $? 0 "$prot $ovr - pass" [ $ovr == "diff" ] && m="-M $((MARK + 1)) -m" ip netns exec $NS ./cmsg_sender -$i -p $p $m $MARK -s $TGT 1234 check_result $? 1 "$prot $ovr - rejection" done done done # Summary if [ $BAD -ne 0 ]; then echo "FAIL - $BAD/$TOTAL cases failed" exit 1 else echo "OK" exit 0 fi