1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3
  4ksft_skip=4
  5
  6NS=ns
  7IP6=2001:db8:1::1/64
  8TGT6=2001:db8:1::2
  9TMPF=$(mktemp --suffix ".pcap")
 10
 11cleanup()
 12{
 13    rm -f $TMPF
 14    ip netns del $NS
 15}
 16
 17trap cleanup EXIT
 18
 19NSEXE="ip netns exec $NS"
 20
 21tcpdump -h | grep immediate-mode >> /dev/null
 22if [ $? -ne 0 ]; then
 23    echo "SKIP - tcpdump with --immediate-mode option required"
 24    exit $ksft_skip
 25fi
 26
 27# Namespaces
 28ip netns add $NS
 
 29
 30$NSEXE sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null
 31
 32# Connectivity
 33ip -netns $NS link add type dummy
 34ip -netns $NS link set dev dummy0 up
 35ip -netns $NS addr add $IP6 dev dummy0
 36
 37# Test
 38BAD=0
 39TOTAL=0
 40
 41check_result() {
 42    ((TOTAL++))
 43    if [ $1 -ne $2 ]; then
 44	echo "  Case $3 returned $1, expected $2"
 45	((BAD++))
 46    fi
 47}
 48
 49# IPV6_DONTFRAG
 50for ovr in setsock cmsg both diff; do
 51    for df in 0 1; do
 52	for p in u i r; do
 53	    [ $p == "u" ] && prot=UDP
 54	    [ $p == "i" ] && prot=ICMP
 55	    [ $p == "r" ] && prot=RAW
 56
 57	    [ $ovr == "setsock" ] && m="-F $df"
 58	    [ $ovr == "cmsg" ]    && m="-f $df"
 59	    [ $ovr == "both" ]    && m="-F $df -f $df"
 60	    [ $ovr == "diff" ]    && m="-F $((1 - df)) -f $df"
 61
 62	    $NSEXE ./cmsg_sender -s -S 2000 -6 -p $p $m $TGT6 1234
 63	    check_result $? $df "DONTFRAG $prot $ovr"
 64	done
 65    done
 66done
 67
 68# IPV6_TCLASS
 69TOS=0x10
 70TOS2=0x20
 71
 72ip -6 -netns $NS rule add tos $TOS lookup 300
 73ip -6 -netns $NS route add table 300 prohibit any
 74
 75for ovr in setsock cmsg both diff; do
 76    for p in u i r; do
 77	[ $p == "u" ] && prot=UDP
 78	[ $p == "i" ] && prot=ICMP
 79	[ $p == "r" ] && prot=RAW
 80
 81	[ $ovr == "setsock" ] && m="-C"
 82	[ $ovr == "cmsg" ]    && m="-c"
 83	[ $ovr == "both" ]    && m="-C $((TOS2)) -c"
 84	[ $ovr == "diff" ]    && m="-C $((TOS )) -c"
 85
 86	$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
 87	BG=$!
 88	sleep 0.05
 89
 90	$NSEXE ./cmsg_sender -6 -p $p $m $((TOS2)) $TGT6 1234
 91	check_result $? 0 "TCLASS $prot $ovr - pass"
 92
 93	while [ -d /proc/$BG ]; do
 94	    $NSEXE ./cmsg_sender -6 -p u $TGT6 1234
 95	done
 96
 97	tcpdump -r $TMPF -v 2>&1 | grep "class $TOS2" >> /dev/null
 98	check_result $? 0 "TCLASS $prot $ovr - packet data"
 99	rm $TMPF
100
101	[ $ovr == "both" ]    && m="-C $((TOS )) -c"
102	[ $ovr == "diff" ]    && m="-C $((TOS2)) -c"
103
104	$NSEXE ./cmsg_sender -6 -p $p $m $((TOS)) -s $TGT6 1234
105	check_result $? 1 "TCLASS $prot $ovr - rejection"
106    done
107done
108
109# IPV6_HOPLIMIT
110LIM=4
111
112for ovr in setsock cmsg both diff; do
113    for p in u i r; do
114	[ $p == "u" ] && prot=UDP
115	[ $p == "i" ] && prot=ICMP
116	[ $p == "r" ] && prot=RAW
117
118	[ $ovr == "setsock" ] && m="-L"
119	[ $ovr == "cmsg" ]    && m="-l"
120	[ $ovr == "both" ]    && m="-L $LIM -l"
121	[ $ovr == "diff" ]    && m="-L $((LIM + 1)) -l"
122
123	$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
124	BG=$!
125	sleep 0.05
126
127	$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
128	check_result $? 0 "HOPLIMIT $prot $ovr - pass"
129
130	while [ -d /proc/$BG ]; do
131	    $NSEXE ./cmsg_sender -6 -p u $TGT6 1234
132	done
133
134	tcpdump -r $TMPF -v 2>&1 | grep "hlim $LIM[^0-9]" >> /dev/null
135	check_result $? 0 "HOPLIMIT $prot $ovr - packet data"
136	rm $TMPF
137    done
138done
139
140# IPV6 exthdr
141for p in u i r; do
142    # Very basic "does it crash" test
143    for h in h d r; do
144	$NSEXE ./cmsg_sender -p $p -6 -H $h $TGT6 1234
145	check_result $? 0 "ExtHdr $prot $ovr - pass"
146    done
147done
148
149# Summary
150if [ $BAD -ne 0 ]; then
151    echo "FAIL - $BAD/$TOTAL cases failed"
152    exit 1
153else
154    echo "OK"
155    exit 0
156fi

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3
  4source lib.sh
  5
 
  6IP6=2001:db8:1::1/64
  7TGT6=2001:db8:1::2
  8TMPF=$(mktemp --suffix ".pcap")
  9
 10cleanup()
 11{
 12    rm -f $TMPF
 13    cleanup_ns $NS
 14}
 15
 16trap cleanup EXIT
 17
 
 
 18tcpdump -h | grep immediate-mode >> /dev/null
 19if [ $? -ne 0 ]; then
 20    echo "SKIP - tcpdump with --immediate-mode option required"
 21    exit $ksft_skip
 22fi
 23
 24# Namespaces
 25setup_ns NS
 26NSEXE="ip netns exec $NS"
 27
 28$NSEXE sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null
 29
 30# Connectivity
 31ip -netns $NS link add type dummy
 32ip -netns $NS link set dev dummy0 up
 33ip -netns $NS addr add $IP6 dev dummy0
 34
 35# Test
 36BAD=0
 37TOTAL=0
 38
 39check_result() {
 40    ((TOTAL++))
 41    if [ $1 -ne $2 ]; then
 42	echo "  Case $3 returned $1, expected $2"
 43	((BAD++))
 44    fi
 45}
 46
 47# IPV6_DONTFRAG
 48for ovr in setsock cmsg both diff; do
 49    for df in 0 1; do
 50	for p in u i r; do
 51	    [ $p == "u" ] && prot=UDP
 52	    [ $p == "i" ] && prot=ICMP
 53	    [ $p == "r" ] && prot=RAW
 54
 55	    [ $ovr == "setsock" ] && m="-F $df"
 56	    [ $ovr == "cmsg" ]    && m="-f $df"
 57	    [ $ovr == "both" ]    && m="-F $df -f $df"
 58	    [ $ovr == "diff" ]    && m="-F $((1 - df)) -f $df"
 59
 60	    $NSEXE ./cmsg_sender -s -S 2000 -6 -p $p $m $TGT6 1234
 61	    check_result $? $df "DONTFRAG $prot $ovr"
 62	done
 63    done
 64done
 65
 66# IPV6_TCLASS
 67TOS=0x10
 68TOS2=0x20
 69
 70ip -6 -netns $NS rule add tos $TOS lookup 300
 71ip -6 -netns $NS route add table 300 prohibit any
 72
 73for ovr in setsock cmsg both diff; do
 74    for p in u i r; do
 75	[ $p == "u" ] && prot=UDP
 76	[ $p == "i" ] && prot=ICMP
 77	[ $p == "r" ] && prot=RAW
 78
 79	[ $ovr == "setsock" ] && m="-C"
 80	[ $ovr == "cmsg" ]    && m="-c"
 81	[ $ovr == "both" ]    && m="-C $((TOS2)) -c"
 82	[ $ovr == "diff" ]    && m="-C $((TOS )) -c"
 83
 84	$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
 85	BG=$!
 86	sleep 0.05
 87
 88	$NSEXE ./cmsg_sender -6 -p $p $m $((TOS2)) $TGT6 1234
 89	check_result $? 0 "TCLASS $prot $ovr - pass"
 90
 91	while [ -d /proc/$BG ]; do
 92	    $NSEXE ./cmsg_sender -6 -p $p $m $((TOS2)) $TGT6 1234
 93	done
 94
 95	tcpdump -r $TMPF -v 2>&1 | grep "class $TOS2" >> /dev/null
 96	check_result $? 0 "TCLASS $prot $ovr - packet data"
 97	rm $TMPF
 98
 99	[ $ovr == "both" ]    && m="-C $((TOS )) -c"
100	[ $ovr == "diff" ]    && m="-C $((TOS2)) -c"
101
102	$NSEXE ./cmsg_sender -6 -p $p $m $((TOS)) -s $TGT6 1234
103	check_result $? 1 "TCLASS $prot $ovr - rejection"
104    done
105done
106
107# IPV6_HOPLIMIT
108LIM=4
109
110for ovr in setsock cmsg both diff; do
111    for p in u i r; do
112	[ $p == "u" ] && prot=UDP
113	[ $p == "i" ] && prot=ICMP
114	[ $p == "r" ] && prot=RAW
115
116	[ $ovr == "setsock" ] && m="-L"
117	[ $ovr == "cmsg" ]    && m="-l"
118	[ $ovr == "both" ]    && m="-L $LIM -l"
119	[ $ovr == "diff" ]    && m="-L $((LIM + 1)) -l"
120
121	$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
122	BG=$!
123	sleep 0.05
124
125	$NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
126	check_result $? 0 "HOPLIMIT $prot $ovr - pass"
127
128	while [ -d /proc/$BG ]; do
129	    $NSEXE ./cmsg_sender -6 -p $p $m $LIM $TGT6 1234
130	done
131
132	tcpdump -r $TMPF -v 2>&1 | grep "hlim $LIM[^0-9]" >> /dev/null
133	check_result $? 0 "HOPLIMIT $prot $ovr - packet data"
134	rm $TMPF
135    done
136done
137
138# IPV6 exthdr
139for p in u i r; do
140    # Very basic "does it crash" test
141    for h in h d r; do
142	$NSEXE ./cmsg_sender -p $p -6 -H $h $TGT6 1234
143	check_result $? 0 "ExtHdr $prot $ovr - pass"
144    done
145done
146
147# Summary
148if [ $BAD -ne 0 ]; then
149    echo "FAIL - $BAD/$TOTAL cases failed"
150    exit 1
151else
152    echo "OK"
153    exit 0
154fi