mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-03 15:51:40 -04:00
Merge branch 'expand-cmsg_ipv6-sh-with-ipv4-support'
Willem de Bruijn says: ==================== expand cmsg_ipv6.sh with ipv4 support Expand IPV6_TCLASS to also cover IP_TOS. Expand IPV6_HOPLIMIT to also cover IP_TTL. A series of two patches for basic readability (patch 1 is a noop), and so that git does not interpret code changes + file rename as a whole file del + add. ==================== Link: https://patch.msgid.link/20250225022431.2083926-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski
@@ -34,7 +34,7 @@ TEST_PROGS += gre_gso.sh
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TEST_PROGS += cmsg_so_mark.sh
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TEST_PROGS += cmsg_so_priority.sh
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TEST_PROGS += test_so_rcv.sh
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TEST_PROGS += cmsg_time.sh cmsg_ipv6.sh
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TEST_PROGS += cmsg_time.sh cmsg_ip.sh
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TEST_PROGS += netns-name.sh
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TEST_PROGS += link_netns.py
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TEST_PROGS += nl_netdev.py
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184
tools/testing/selftests/net/cmsg_ip.sh
Executable file
184
tools/testing/selftests/net/cmsg_ip.sh
Executable file
@@ -0,0 +1,184 @@
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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source lib.sh
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IP4=172.16.0.1/24
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TGT4=172.16.0.2
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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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cleanup_ns $NS
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}
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trap cleanup EXIT
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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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setup_ns NS
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NSEXE="ip netns exec $NS"
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$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 $IP4 dev dummy0
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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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# IP_TOS + IPV6_TCLASS
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test_dscp() {
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local -r IPVER=$1
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local -r TGT=$2
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local -r MATCH=$3
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local -r TOS=0x10
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local -r TOS2=0x20
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local -r ECN=0x3
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ip $IPVER -netns $NS rule add tos $TOS lookup 300
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ip $IPVER -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 $IPVER -p $p $m $((TOS2)) $TGT 1234
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check_result $? 0 "$MATCH $prot $ovr - pass"
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while [ -d /proc/$BG ]; do
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$NSEXE ./cmsg_sender $IPVER -p $p $m $((TOS2)) $TGT 1234
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done
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tcpdump -r $TMPF -v 2>&1 | grep "$MATCH $TOS2" >> /dev/null
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check_result $? 0 "$MATCH $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 $((TOS2)) -c"
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# Match prohibit rule: expect failure
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$NSEXE ./cmsg_sender $IPVER -p $p $m $((TOS)) -s $TGT 1234
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check_result $? 1 "$MATCH $prot $ovr - rejection"
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# Match prohibit rule: IPv4 masks ECN: expect failure
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if [[ "$IPVER" == "-4" ]]; then
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$NSEXE ./cmsg_sender $IPVER -p $p $m "$((TOS | ECN))" -s $TGT 1234
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check_result $? 1 "$MATCH $prot $ovr - rejection (ECN)"
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fi
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done
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done
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}
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test_dscp -4 $TGT4 tos
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test_dscp -6 $TGT6 class
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# IP_TTL + IPV6_HOPLIMIT
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test_ttl_hoplimit() {
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local -r IPVER=$1
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local -r TGT=$2
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local -r MATCH=$3
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local -r 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 $IPVER -p $p $m $LIM $TGT 1234
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check_result $? 0 "$MATCH $prot $ovr - pass"
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while [ -d /proc/$BG ]; do
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$NSEXE ./cmsg_sender $IPVER -p $p $m $LIM $TGT 1234
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done
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tcpdump -r $TMPF -v 2>&1 | grep "$MATCH $LIM[^0-9]" >> /dev/null
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check_result $? 0 "$MATCH $prot $ovr - packet data"
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rm $TMPF
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done
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done
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}
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test_ttl_hoplimit -4 $TGT4 ttl
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test_ttl_hoplimit -6 $TGT6 hlim
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# IPV6 exthdr
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for p in u i r; do
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# Very basic "does it crash" test
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for h in h d r; do
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$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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@@ -1,154 +0,0 @@
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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source lib.sh
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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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cleanup_ns $NS
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}
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trap cleanup EXIT
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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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setup_ns NS
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NSEXE="ip netns exec $NS"
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$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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|
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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 $((LIM + 1)) -l"
|
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|
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$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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|
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$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
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check_result $? 0 "HOPLIMIT $prot $ovr - pass"
|
||||
|
||||
while [ -d /proc/$BG ]; do
|
||||
$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
|
||||
done
|
||||
|
||||
tcpdump -r $TMPF -v 2>&1 | grep "hlim $LIM[^0-9]" >> /dev/null
|
||||
check_result $? 0 "HOPLIMIT $prot $ovr - packet data"
|
||||
rm $TMPF
|
||||
done
|
||||
done
|
||||
|
||||
# IPV6 exthdr
|
||||
for p in u i r; do
|
||||
# Very basic "does it crash" test
|
||||
for h in h d r; do
|
||||
$NSEXE ./cmsg_sender -p $p -6 -H $h $TGT6 1234
|
||||
check_result $? 0 "ExtHdr $prot $ovr - pass"
|
||||
done
|
||||
done
|
||||
|
||||
# Summary
|
||||
if [ $BAD -ne 0 ]; then
|
||||
echo "FAIL - $BAD/$TOTAL cases failed"
|
||||
exit 1
|
||||
else
|
||||
echo "OK"
|
||||
exit 0
|
||||
fi
|
||||
@@ -72,7 +72,7 @@ struct options {
|
||||
struct option_cmsg_u32 tclass;
|
||||
struct option_cmsg_u32 hlimit;
|
||||
struct option_cmsg_u32 exthdr;
|
||||
} v6;
|
||||
} cmsg;
|
||||
} opt = {
|
||||
.size = 13,
|
||||
.num_pkt = 1,
|
||||
@@ -104,10 +104,10 @@ static void __attribute__((noreturn)) cs_usage(const char *bin)
|
||||
"\t\t-t Enable time stamp reporting\n"
|
||||
"\t\t-f val Set don't fragment via cmsg\n"
|
||||
"\t\t-F val Set don't fragment via setsockopt\n"
|
||||
"\t\t-c val Set TCLASS via cmsg\n"
|
||||
"\t\t-C val Set TCLASS via setsockopt\n"
|
||||
"\t\t-l val Set HOPLIMIT via cmsg\n"
|
||||
"\t\t-L val Set HOPLIMIT via setsockopt\n"
|
||||
"\t\t-c val Set TOS/TCLASS via cmsg\n"
|
||||
"\t\t-C val Set TOS/TCLASS via setsockopt\n"
|
||||
"\t\t-l val Set TTL/HOPLIMIT via cmsg\n"
|
||||
"\t\t-L val Set TTL/HOPLIMIT via setsockopt\n"
|
||||
"\t\t-H type Add an IPv6 header option\n"
|
||||
"\t\t (h = HOP; d = DST; r = RTDST)"
|
||||
"");
|
||||
@@ -169,37 +169,37 @@ static void cs_parse_args(int argc, char *argv[])
|
||||
opt.ts.ena = true;
|
||||
break;
|
||||
case 'f':
|
||||
opt.v6.dontfrag.ena = true;
|
||||
opt.v6.dontfrag.val = atoi(optarg);
|
||||
opt.cmsg.dontfrag.ena = true;
|
||||
opt.cmsg.dontfrag.val = atoi(optarg);
|
||||
break;
|
||||
case 'F':
|
||||
opt.sockopt.dontfrag = atoi(optarg);
|
||||
break;
|
||||
case 'c':
|
||||
opt.v6.tclass.ena = true;
|
||||
opt.v6.tclass.val = atoi(optarg);
|
||||
opt.cmsg.tclass.ena = true;
|
||||
opt.cmsg.tclass.val = atoi(optarg);
|
||||
break;
|
||||
case 'C':
|
||||
opt.sockopt.tclass = atoi(optarg);
|
||||
break;
|
||||
case 'l':
|
||||
opt.v6.hlimit.ena = true;
|
||||
opt.v6.hlimit.val = atoi(optarg);
|
||||
opt.cmsg.hlimit.ena = true;
|
||||
opt.cmsg.hlimit.val = atoi(optarg);
|
||||
break;
|
||||
case 'L':
|
||||
opt.sockopt.hlimit = atoi(optarg);
|
||||
break;
|
||||
case 'H':
|
||||
opt.v6.exthdr.ena = true;
|
||||
opt.cmsg.exthdr.ena = true;
|
||||
switch (optarg[0]) {
|
||||
case 'h':
|
||||
opt.v6.exthdr.val = IPV6_HOPOPTS;
|
||||
opt.cmsg.exthdr.val = IPV6_HOPOPTS;
|
||||
break;
|
||||
case 'd':
|
||||
opt.v6.exthdr.val = IPV6_DSTOPTS;
|
||||
opt.cmsg.exthdr.val = IPV6_DSTOPTS;
|
||||
break;
|
||||
case 'r':
|
||||
opt.v6.exthdr.val = IPV6_RTHDRDSTOPTS;
|
||||
opt.cmsg.exthdr.val = IPV6_RTHDRDSTOPTS;
|
||||
break;
|
||||
default:
|
||||
printf("Error: hdr type: %s\n", optarg);
|
||||
@@ -261,12 +261,20 @@ cs_write_cmsg(int fd, struct msghdr *msg, char *cbuf, size_t cbuf_sz)
|
||||
SOL_SOCKET, SO_MARK, &opt.mark);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_SOCKET, SO_PRIORITY, &opt.priority);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_DONTFRAG, &opt.v6.dontfrag);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_TCLASS, &opt.v6.tclass);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_HOPLIMIT, &opt.v6.hlimit);
|
||||
|
||||
if (opt.sock.family == AF_INET) {
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IP, IP_TOS, &opt.cmsg.tclass);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IP, IP_TTL, &opt.cmsg.hlimit);
|
||||
} else {
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_DONTFRAG, &opt.cmsg.dontfrag);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_TCLASS, &opt.cmsg.tclass);
|
||||
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
|
||||
SOL_IPV6, IPV6_HOPLIMIT, &opt.cmsg.hlimit);
|
||||
}
|
||||
|
||||
if (opt.txtime.ena) {
|
||||
__u64 txtime;
|
||||
@@ -297,14 +305,14 @@ cs_write_cmsg(int fd, struct msghdr *msg, char *cbuf, size_t cbuf_sz)
|
||||
*(__u32 *)CMSG_DATA(cmsg) = SOF_TIMESTAMPING_TX_SCHED |
|
||||
SOF_TIMESTAMPING_TX_SOFTWARE;
|
||||
}
|
||||
if (opt.v6.exthdr.ena) {
|
||||
if (opt.cmsg.exthdr.ena) {
|
||||
cmsg = (struct cmsghdr *)(cbuf + cmsg_len);
|
||||
cmsg_len += CMSG_SPACE(8);
|
||||
if (cbuf_sz < cmsg_len)
|
||||
error(ERN_CMSG_WR, EFAULT, "cmsg buffer too small");
|
||||
|
||||
cmsg->cmsg_level = SOL_IPV6;
|
||||
cmsg->cmsg_type = opt.v6.exthdr.val;
|
||||
cmsg->cmsg_type = opt.cmsg.exthdr.val;
|
||||
cmsg->cmsg_len = CMSG_LEN(8);
|
||||
*(__u64 *)CMSG_DATA(cmsg) = 0;
|
||||
}
|
||||
@@ -405,23 +413,35 @@ static void ca_set_sockopts(int fd)
|
||||
setsockopt(fd, SOL_SOCKET, SO_MARK,
|
||||
&opt.sockopt.mark, sizeof(opt.sockopt.mark)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt SO_MARK");
|
||||
if (opt.sockopt.dontfrag &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_DONTFRAG,
|
||||
&opt.sockopt.dontfrag, sizeof(opt.sockopt.dontfrag)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_DONTFRAG");
|
||||
if (opt.sockopt.tclass &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_TCLASS,
|
||||
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_TCLASS");
|
||||
if (opt.sockopt.hlimit &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS,
|
||||
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_HOPLIMIT");
|
||||
if (opt.sockopt.priority &&
|
||||
setsockopt(fd, SOL_SOCKET, SO_PRIORITY,
|
||||
&opt.sockopt.priority, sizeof(opt.sockopt.priority)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt SO_PRIORITY");
|
||||
|
||||
if (opt.sock.family == AF_INET) {
|
||||
if (opt.sockopt.tclass &&
|
||||
setsockopt(fd, SOL_IP, IP_TOS,
|
||||
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IP_TOS");
|
||||
if (opt.sockopt.hlimit &&
|
||||
setsockopt(fd, SOL_IP, IP_TTL,
|
||||
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IP_TTL");
|
||||
} else {
|
||||
if (opt.sockopt.dontfrag &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_DONTFRAG,
|
||||
&opt.sockopt.dontfrag, sizeof(opt.sockopt.dontfrag)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_DONTFRAG");
|
||||
if (opt.sockopt.tclass &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_TCLASS,
|
||||
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_TCLASS");
|
||||
if (opt.sockopt.hlimit &&
|
||||
setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS,
|
||||
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
|
||||
error(ERN_SOCKOPT, errno, "setsockopt IPV6_HOPLIMIT");
|
||||
}
|
||||
|
||||
if (opt.txtime.ena) {
|
||||
struct sock_txtime so_txtime = {
|
||||
.clockid = CLOCK_MONOTONIC,
|
||||
|
||||
Reference in New Issue
Block a user