Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+240
-190
+1
-1
tools/testing/selftests/net/Makefile
+1
-1
tools/testing/selftests/net/Makefile
···
34
34
TEST_PROGS += cmsg_so_mark.sh
35
35
TEST_PROGS += cmsg_so_priority.sh
36
36
TEST_PROGS += test_so_rcv.sh
37
-
TEST_PROGS += cmsg_time.sh cmsg_ipv6.sh
37
+
TEST_PROGS += cmsg_time.sh cmsg_ip.sh
38
38
TEST_PROGS += netns-name.sh
39
39
TEST_PROGS += link_netns.py
40
40
TEST_PROGS += nl_netdev.py
+184
tools/testing/selftests/net/cmsg_ip.sh
+184
tools/testing/selftests/net/cmsg_ip.sh
···
1
+
#!/bin/bash
2
+
# SPDX-License-Identifier: GPL-2.0
3
+
4
+
source lib.sh
5
+
6
+
IP4=172.16.0.1/24
7
+
TGT4=172.16.0.2
8
+
IP6=2001:db8:1::1/64
9
+
TGT6=2001:db8:1::2
10
+
TMPF=$(mktemp --suffix ".pcap")
11
+
12
+
cleanup()
13
+
{
14
+
rm -f $TMPF
15
+
cleanup_ns $NS
16
+
}
17
+
18
+
trap cleanup EXIT
19
+
20
+
tcpdump -h | grep immediate-mode >> /dev/null
21
+
if [ $? -ne 0 ]; then
22
+
echo "SKIP - tcpdump with --immediate-mode option required"
23
+
exit $ksft_skip
24
+
fi
25
+
26
+
# Namespaces
27
+
setup_ns NS
28
+
NSEXE="ip netns exec $NS"
29
+
30
+
$NSEXE sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null
31
+
32
+
# Connectivity
33
+
ip -netns $NS link add type dummy
34
+
ip -netns $NS link set dev dummy0 up
35
+
ip -netns $NS addr add $IP4 dev dummy0
36
+
ip -netns $NS addr add $IP6 dev dummy0
37
+
38
+
# Test
39
+
BAD=0
40
+
TOTAL=0
41
+
42
+
check_result() {
43
+
((TOTAL++))
44
+
if [ $1 -ne $2 ]; then
45
+
echo " Case $3 returned $1, expected $2"
46
+
((BAD++))
47
+
fi
48
+
}
49
+
50
+
# IPV6_DONTFRAG
51
+
for ovr in setsock cmsg both diff; do
52
+
for df in 0 1; do
53
+
for p in u i r; do
54
+
[ $p == "u" ] && prot=UDP
55
+
[ $p == "i" ] && prot=ICMP
56
+
[ $p == "r" ] && prot=RAW
57
+
58
+
[ $ovr == "setsock" ] && m="-F $df"
59
+
[ $ovr == "cmsg" ] && m="-f $df"
60
+
[ $ovr == "both" ] && m="-F $df -f $df"
61
+
[ $ovr == "diff" ] && m="-F $((1 - df)) -f $df"
62
+
63
+
$NSEXE ./cmsg_sender -s -S 2000 -6 -p $p $m $TGT6 1234
64
+
check_result $? $df "DONTFRAG $prot $ovr"
65
+
done
66
+
done
67
+
done
68
+
69
+
# IP_TOS + IPV6_TCLASS
70
+
71
+
test_dscp() {
72
+
local -r IPVER=$1
73
+
local -r TGT=$2
74
+
local -r MATCH=$3
75
+
76
+
local -r TOS=0x10
77
+
local -r TOS2=0x20
78
+
local -r ECN=0x3
79
+
80
+
ip $IPVER -netns $NS rule add tos $TOS lookup 300
81
+
ip $IPVER -netns $NS route add table 300 prohibit any
82
+
83
+
for ovr in setsock cmsg both diff; do
84
+
for p in u i r; do
85
+
[ $p == "u" ] && prot=UDP
86
+
[ $p == "i" ] && prot=ICMP
87
+
[ $p == "r" ] && prot=RAW
88
+
89
+
[ $ovr == "setsock" ] && m="-C"
90
+
[ $ovr == "cmsg" ] && m="-c"
91
+
[ $ovr == "both" ] && m="-C $((TOS2)) -c"
92
+
[ $ovr == "diff" ] && m="-C $((TOS )) -c"
93
+
94
+
$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
95
+
BG=$!
96
+
sleep 0.05
97
+
98
+
$NSEXE ./cmsg_sender $IPVER -p $p $m $((TOS2)) $TGT 1234
99
+
check_result $? 0 "$MATCH $prot $ovr - pass"
100
+
101
+
while [ -d /proc/$BG ]; do
102
+
$NSEXE ./cmsg_sender $IPVER -p $p $m $((TOS2)) $TGT 1234
103
+
done
104
+
105
+
tcpdump -r $TMPF -v 2>&1 | grep "$MATCH $TOS2" >> /dev/null
106
+
check_result $? 0 "$MATCH $prot $ovr - packet data"
107
+
rm $TMPF
108
+
109
+
[ $ovr == "both" ] && m="-C $((TOS )) -c"
110
+
[ $ovr == "diff" ] && m="-C $((TOS2)) -c"
111
+
112
+
# Match prohibit rule: expect failure
113
+
$NSEXE ./cmsg_sender $IPVER -p $p $m $((TOS)) -s $TGT 1234
114
+
check_result $? 1 "$MATCH $prot $ovr - rejection"
115
+
116
+
# Match prohibit rule: IPv4 masks ECN: expect failure
117
+
if [[ "$IPVER" == "-4" ]]; then
118
+
$NSEXE ./cmsg_sender $IPVER -p $p $m "$((TOS | ECN))" -s $TGT 1234
119
+
check_result $? 1 "$MATCH $prot $ovr - rejection (ECN)"
120
+
fi
121
+
done
122
+
done
123
+
}
124
+
125
+
test_dscp -4 $TGT4 tos
126
+
test_dscp -6 $TGT6 class
127
+
128
+
# IP_TTL + IPV6_HOPLIMIT
129
+
test_ttl_hoplimit() {
130
+
local -r IPVER=$1
131
+
local -r TGT=$2
132
+
local -r MATCH=$3
133
+
134
+
local -r LIM=4
135
+
136
+
for ovr in setsock cmsg both diff; do
137
+
for p in u i r; do
138
+
[ $p == "u" ] && prot=UDP
139
+
[ $p == "i" ] && prot=ICMP
140
+
[ $p == "r" ] && prot=RAW
141
+
142
+
[ $ovr == "setsock" ] && m="-L"
143
+
[ $ovr == "cmsg" ] && m="-l"
144
+
[ $ovr == "both" ] && m="-L $LIM -l"
145
+
[ $ovr == "diff" ] && m="-L $((LIM + 1)) -l"
146
+
147
+
$NSEXE nohup tcpdump --immediate-mode -p -ni dummy0 -w $TMPF -c 4 2> /dev/null &
148
+
BG=$!
149
+
sleep 0.05
150
+
151
+
$NSEXE ./cmsg_sender $IPVER -p $p $m $LIM $TGT 1234
152
+
check_result $? 0 "$MATCH $prot $ovr - pass"
153
+
154
+
while [ -d /proc/$BG ]; do
155
+
$NSEXE ./cmsg_sender $IPVER -p $p $m $LIM $TGT 1234
156
+
done
157
+
158
+
tcpdump -r $TMPF -v 2>&1 | grep "$MATCH $LIM[^0-9]" >> /dev/null
159
+
check_result $? 0 "$MATCH $prot $ovr - packet data"
160
+
rm $TMPF
161
+
done
162
+
done
163
+
}
164
+
165
+
test_ttl_hoplimit -4 $TGT4 ttl
166
+
test_ttl_hoplimit -6 $TGT6 hlim
167
+
168
+
# IPV6 exthdr
169
+
for p in u i r; do
170
+
# Very basic "does it crash" test
171
+
for h in h d r; do
172
+
$NSEXE ./cmsg_sender -p $p -6 -H $h $TGT6 1234
173
+
check_result $? 0 "ExtHdr $prot $ovr - pass"
174
+
done
175
+
done
176
+
177
+
# Summary
178
+
if [ $BAD -ne 0 ]; then
179
+
echo "FAIL - $BAD/$TOTAL cases failed"
180
+
exit 1
181
+
else
182
+
echo "OK"
183
+
exit 0
184
+
fi
-154
tools/testing/selftests/net/cmsg_ipv6.sh
-154
tools/testing/selftests/net/cmsg_ipv6.sh
···
1
-
#!/bin/bash
2
-
# SPDX-License-Identifier: GPL-2.0
3
-
4
-
source lib.sh
5
-
6
-
IP6=2001:db8:1::1/64
7
-
TGT6=2001:db8:1::2
8
-
TMPF=$(mktemp --suffix ".pcap")
9
-
10
-
cleanup()
11
-
{
12
-
rm -f $TMPF
13
-
cleanup_ns $NS
14
-
}
15
-
16
-
trap cleanup EXIT
17
-
18
-
tcpdump -h | grep immediate-mode >> /dev/null
19
-
if [ $? -ne 0 ]; then
20
-
echo "SKIP - tcpdump with --immediate-mode option required"
21
-
exit $ksft_skip
22
-
fi
23
-
24
-
# Namespaces
25
-
setup_ns NS
26
-
NSEXE="ip netns exec $NS"
27
-
28
-
$NSEXE sysctl -w net.ipv4.ping_group_range='0 2147483647' > /dev/null
29
-
30
-
# Connectivity
31
-
ip -netns $NS link add type dummy
32
-
ip -netns $NS link set dev dummy0 up
33
-
ip -netns $NS addr add $IP6 dev dummy0
34
-
35
-
# Test
36
-
BAD=0
37
-
TOTAL=0
38
-
39
-
check_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
48
-
for 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
64
-
done
65
-
66
-
# IPV6_TCLASS
67
-
TOS=0x10
68
-
TOS2=0x20
69
-
70
-
ip -6 -netns $NS rule add tos $TOS lookup 300
71
-
ip -6 -netns $NS route add table 300 prohibit any
72
-
73
-
for 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
105
-
done
106
-
107
-
# IPV6_HOPLIMIT
108
-
LIM=4
109
-
110
-
for 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
136
-
done
137
-
138
-
# IPV6 exthdr
139
-
for 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
145
-
done
146
-
147
-
# Summary
148
-
if [ $BAD -ne 0 ]; then
149
-
echo "FAIL - $BAD/$TOTAL cases failed"
150
-
exit 1
151
-
else
152
-
echo "OK"
153
-
exit 0
154
-
fi
+55
-35
tools/testing/selftests/net/cmsg_sender.c
+55
-35
tools/testing/selftests/net/cmsg_sender.c
···
72
72
struct option_cmsg_u32 tclass;
73
73
struct option_cmsg_u32 hlimit;
74
74
struct option_cmsg_u32 exthdr;
75
-
} v6;
75
+
} cmsg;
76
76
} opt = {
77
77
.size = 13,
78
78
.num_pkt = 1,
···
104
104
"\t\t-t Enable time stamp reporting\n"
105
105
"\t\t-f val Set don't fragment via cmsg\n"
106
106
"\t\t-F val Set don't fragment via setsockopt\n"
107
-
"\t\t-c val Set TCLASS via cmsg\n"
108
-
"\t\t-C val Set TCLASS via setsockopt\n"
109
-
"\t\t-l val Set HOPLIMIT via cmsg\n"
110
-
"\t\t-L val Set HOPLIMIT via setsockopt\n"
107
+
"\t\t-c val Set TOS/TCLASS via cmsg\n"
108
+
"\t\t-C val Set TOS/TCLASS via setsockopt\n"
109
+
"\t\t-l val Set TTL/HOPLIMIT via cmsg\n"
110
+
"\t\t-L val Set TTL/HOPLIMIT via setsockopt\n"
111
111
"\t\t-H type Add an IPv6 header option\n"
112
112
"\t\t (h = HOP; d = DST; r = RTDST)"
113
113
"");
···
169
169
opt.ts.ena = true;
170
170
break;
171
171
case 'f':
172
-
opt.v6.dontfrag.ena = true;
173
-
opt.v6.dontfrag.val = atoi(optarg);
172
+
opt.cmsg.dontfrag.ena = true;
173
+
opt.cmsg.dontfrag.val = atoi(optarg);
174
174
break;
175
175
case 'F':
176
176
opt.sockopt.dontfrag = atoi(optarg);
177
177
break;
178
178
case 'c':
179
-
opt.v6.tclass.ena = true;
180
-
opt.v6.tclass.val = atoi(optarg);
179
+
opt.cmsg.tclass.ena = true;
180
+
opt.cmsg.tclass.val = atoi(optarg);
181
181
break;
182
182
case 'C':
183
183
opt.sockopt.tclass = atoi(optarg);
184
184
break;
185
185
case 'l':
186
-
opt.v6.hlimit.ena = true;
187
-
opt.v6.hlimit.val = atoi(optarg);
186
+
opt.cmsg.hlimit.ena = true;
187
+
opt.cmsg.hlimit.val = atoi(optarg);
188
188
break;
189
189
case 'L':
190
190
opt.sockopt.hlimit = atoi(optarg);
191
191
break;
192
192
case 'H':
193
-
opt.v6.exthdr.ena = true;
193
+
opt.cmsg.exthdr.ena = true;
194
194
switch (optarg[0]) {
195
195
case 'h':
196
-
opt.v6.exthdr.val = IPV6_HOPOPTS;
196
+
opt.cmsg.exthdr.val = IPV6_HOPOPTS;
197
197
break;
198
198
case 'd':
199
-
opt.v6.exthdr.val = IPV6_DSTOPTS;
199
+
opt.cmsg.exthdr.val = IPV6_DSTOPTS;
200
200
break;
201
201
case 'r':
202
-
opt.v6.exthdr.val = IPV6_RTHDRDSTOPTS;
202
+
opt.cmsg.exthdr.val = IPV6_RTHDRDSTOPTS;
203
203
break;
204
204
default:
205
205
printf("Error: hdr type: %s\n", optarg);
···
261
261
SOL_SOCKET, SO_MARK, &opt.mark);
262
262
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
263
263
SOL_SOCKET, SO_PRIORITY, &opt.priority);
264
-
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
265
-
SOL_IPV6, IPV6_DONTFRAG, &opt.v6.dontfrag);
266
-
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
267
-
SOL_IPV6, IPV6_TCLASS, &opt.v6.tclass);
268
-
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
269
-
SOL_IPV6, IPV6_HOPLIMIT, &opt.v6.hlimit);
264
+
265
+
if (opt.sock.family == AF_INET) {
266
+
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
267
+
SOL_IP, IP_TOS, &opt.cmsg.tclass);
268
+
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
269
+
SOL_IP, IP_TTL, &opt.cmsg.hlimit);
270
+
} else {
271
+
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
272
+
SOL_IPV6, IPV6_DONTFRAG, &opt.cmsg.dontfrag);
273
+
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
274
+
SOL_IPV6, IPV6_TCLASS, &opt.cmsg.tclass);
275
+
ca_write_cmsg_u32(cbuf, cbuf_sz, &cmsg_len,
276
+
SOL_IPV6, IPV6_HOPLIMIT, &opt.cmsg.hlimit);
277
+
}
270
278
271
279
if (opt.txtime.ena) {
272
280
__u64 txtime;
···
305
297
*(__u32 *)CMSG_DATA(cmsg) = SOF_TIMESTAMPING_TX_SCHED |
306
298
SOF_TIMESTAMPING_TX_SOFTWARE;
307
299
}
308
-
if (opt.v6.exthdr.ena) {
300
+
if (opt.cmsg.exthdr.ena) {
309
301
cmsg = (struct cmsghdr *)(cbuf + cmsg_len);
310
302
cmsg_len += CMSG_SPACE(8);
311
303
if (cbuf_sz < cmsg_len)
312
304
error(ERN_CMSG_WR, EFAULT, "cmsg buffer too small");
313
305
314
306
cmsg->cmsg_level = SOL_IPV6;
315
-
cmsg->cmsg_type = opt.v6.exthdr.val;
307
+
cmsg->cmsg_type = opt.cmsg.exthdr.val;
316
308
cmsg->cmsg_len = CMSG_LEN(8);
317
309
*(__u64 *)CMSG_DATA(cmsg) = 0;
318
310
}
···
413
405
setsockopt(fd, SOL_SOCKET, SO_MARK,
414
406
&opt.sockopt.mark, sizeof(opt.sockopt.mark)))
415
407
error(ERN_SOCKOPT, errno, "setsockopt SO_MARK");
416
-
if (opt.sockopt.dontfrag &&
417
-
setsockopt(fd, SOL_IPV6, IPV6_DONTFRAG,
418
-
&opt.sockopt.dontfrag, sizeof(opt.sockopt.dontfrag)))
419
-
error(ERN_SOCKOPT, errno, "setsockopt IPV6_DONTFRAG");
420
-
if (opt.sockopt.tclass &&
421
-
setsockopt(fd, SOL_IPV6, IPV6_TCLASS,
422
-
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
423
-
error(ERN_SOCKOPT, errno, "setsockopt IPV6_TCLASS");
424
-
if (opt.sockopt.hlimit &&
425
-
setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS,
426
-
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
427
-
error(ERN_SOCKOPT, errno, "setsockopt IPV6_HOPLIMIT");
428
408
if (opt.sockopt.priority &&
429
409
setsockopt(fd, SOL_SOCKET, SO_PRIORITY,
430
410
&opt.sockopt.priority, sizeof(opt.sockopt.priority)))
431
411
error(ERN_SOCKOPT, errno, "setsockopt SO_PRIORITY");
412
+
413
+
if (opt.sock.family == AF_INET) {
414
+
if (opt.sockopt.tclass &&
415
+
setsockopt(fd, SOL_IP, IP_TOS,
416
+
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
417
+
error(ERN_SOCKOPT, errno, "setsockopt IP_TOS");
418
+
if (opt.sockopt.hlimit &&
419
+
setsockopt(fd, SOL_IP, IP_TTL,
420
+
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
421
+
error(ERN_SOCKOPT, errno, "setsockopt IP_TTL");
422
+
} else {
423
+
if (opt.sockopt.dontfrag &&
424
+
setsockopt(fd, SOL_IPV6, IPV6_DONTFRAG,
425
+
&opt.sockopt.dontfrag, sizeof(opt.sockopt.dontfrag)))
426
+
error(ERN_SOCKOPT, errno, "setsockopt IPV6_DONTFRAG");
427
+
if (opt.sockopt.tclass &&
428
+
setsockopt(fd, SOL_IPV6, IPV6_TCLASS,
429
+
&opt.sockopt.tclass, sizeof(opt.sockopt.tclass)))
430
+
error(ERN_SOCKOPT, errno, "setsockopt IPV6_TCLASS");
431
+
if (opt.sockopt.hlimit &&
432
+
setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS,
433
+
&opt.sockopt.hlimit, sizeof(opt.sockopt.hlimit)))
434
+
error(ERN_SOCKOPT, errno, "setsockopt IPV6_HOPLIMIT");
435
+
}
432
436
433
437
if (opt.txtime.ena) {
434
438
struct sock_txtime so_txtime = {