84bfcb7774
[ Upstream commit 4b00d0c513da58b68df015968721b11396fe4ab3 ] cmsg_ipv6 test requests tcpdump to capture 4 packets, and sends until tcpdump quits. Only the first packet is "real", however, and the rest are basic UDP packets. So if tcpdump doesn't start in time it will miss the real packet and only capture the UDP ones. This makes the test fail on slow machine (no KVM or with debug enabled) 100% of the time, while it passes in fast environments. Repeat the "real" / expected packet. Fixes:9657ad09e1("selftests: net: test IPV6_TCLASS") Fixes:05ae83d5a4("selftests: net: test IPV6_HOPLIMIT") Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
157 lines
3.3 KiB
Bash
Executable File
157 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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ksft_skip=4
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NS=ns
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IP6=2001:db8:1::1/64
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TGT6=2001:db8:1::2
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TMPF=$(mktemp --suffix ".pcap")
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cleanup()
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{
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rm -f $TMPF
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ip netns del $NS
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}
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trap cleanup EXIT
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NSEXE="ip netns exec $NS"
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tcpdump -h | grep immediate-mode >> /dev/null
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if [ $? -ne 0 ]; then
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echo "SKIP - tcpdump with --immediate-mode option required"
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exit $ksft_skip
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fi
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# Namespaces
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ip netns add $NS
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$NSEXE sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null
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# Connectivity
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ip -netns $NS link add type dummy
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ip -netns $NS link set dev dummy0 up
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ip -netns $NS addr add $IP6 dev dummy0
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# Test
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BAD=0
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TOTAL=0
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check_result() {
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((TOTAL++))
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if [ $1 -ne $2 ]; then
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echo " Case $3 returned $1, expected $2"
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((BAD++))
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fi
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}
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# IPV6_DONTFRAG
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for ovr in setsock cmsg both diff; do
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for df in 0 1; do
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for p in u i r; do
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[ $p == "u" ] && prot=UDP
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[ $p == "i" ] && prot=ICMP
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[ $p == "r" ] && prot=RAW
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[ $ovr == "setsock" ] && m="-F $df"
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[ $ovr == "cmsg" ] && m="-f $df"
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[ $ovr == "both" ] && m="-F $df -f $df"
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[ $ovr == "diff" ] && m="-F $((1 - df)) -f $df"
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$NSEXE ./cmsg_sender -s -S 2000 -6 -p $p $m $TGT6 1234
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check_result $? $df "DONTFRAG $prot $ovr"
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done
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done
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done
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# IPV6_TCLASS
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TOS=0x10
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TOS2=0x20
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ip -6 -netns $NS rule add tos $TOS lookup 300
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ip -6 -netns $NS route add table 300 prohibit any
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for ovr in setsock cmsg both diff; do
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for p in u i r; do
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[ $p == "u" ] && prot=UDP
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[ $p == "i" ] && prot=ICMP
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[ $p == "r" ] && prot=RAW
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[ $ovr == "setsock" ] && m="-C"
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[ $ovr == "cmsg" ] && m="-c"
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[ $ovr == "both" ] && m="-C $((TOS2)) -c"
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[ $ovr == "diff" ] && m="-C $((TOS )) -c"
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$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
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BG=$!
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sleep 0.05
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$NSEXE ./cmsg_sender -6 -p $p $m $((TOS2)) $TGT6 1234
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check_result $? 0 "TCLASS $prot $ovr - pass"
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while [ -d /proc/$BG ]; do
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$NSEXE ./cmsg_sender -6 -p $p $m $((TOS2)) $TGT6 1234
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done
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tcpdump -r $TMPF -v 2>&1 | grep "class $TOS2" >> /dev/null
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check_result $? 0 "TCLASS $prot $ovr - packet data"
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rm $TMPF
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[ $ovr == "both" ] && m="-C $((TOS )) -c"
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[ $ovr == "diff" ] && m="-C $((TOS2)) -c"
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$NSEXE ./cmsg_sender -6 -p $p $m $((TOS)) -s $TGT6 1234
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check_result $? 1 "TCLASS $prot $ovr - rejection"
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done
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done
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# IPV6_HOPLIMIT
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LIM=4
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for ovr in setsock cmsg both diff; do
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for p in u i r; do
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[ $p == "u" ] && prot=UDP
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[ $p == "i" ] && prot=ICMP
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[ $p == "r" ] && prot=RAW
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[ $ovr == "setsock" ] && m="-L"
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[ $ovr == "cmsg" ] && m="-l"
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[ $ovr == "both" ] && m="-L $LIM -l"
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[ $ovr == "diff" ] && m="-L $((LIM + 1)) -l"
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$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
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BG=$!
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sleep 0.05
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$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
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check_result $? 0 "HOPLIMIT $prot $ovr - pass"
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while [ -d /proc/$BG ]; do
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$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
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done
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tcpdump -r $TMPF -v 2>&1 | grep "hlim $LIM[^0-9]" >> /dev/null
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check_result $? 0 "HOPLIMIT $prot $ovr - packet data"
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rm $TMPF
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done
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done
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# IPV6 exthdr
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for p in u i r; do
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# Very basic "does it crash" test
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for h in h d r; do
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$NSEXE ./cmsg_sender -p $p -6 -H $h $TGT6 1234
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check_result $? 0 "ExtHdr $prot $ovr - pass"
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done
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done
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# Summary
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if [ $BAD -ne 0 ]; then
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echo "FAIL - $BAD/$TOTAL cases failed"
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exit 1
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else
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echo "OK"
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exit 0
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fi
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