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selftests: net: basic test for IPV6_2292*

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Add a basic test to make sure ping sockets don't crash
with IPV6_2292* options.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2022-02-16 17:21:20 -08:00 committed by David S. Miller
parent 05ae83d5a4
commit a22982c39e
2 changed files with 41 additions and 1 deletions
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9
tools/testing/selftests/net/cmsg_ipv6.sh
View File

@ -137,6 +137,15 @@ for ovr in setsock cmsg both diff; do
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"

33
tools/testing/selftests/net/cmsg_sender.c
View File

@ -66,6 +66,7 @@ struct options {
struct option_cmsg_u32 dontfrag;
struct option_cmsg_u32 tclass;
struct option_cmsg_u32 hlimit;
struct option_cmsg_u32 exthdr;
} v6;
} opt = {
.size = 13,
@ -99,6 +100,8 @@ static void __attribute__((noreturn)) cs_usage(const char *bin)
"\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-H type Add an IPv6 header option\n"
"\t\t (h = HOP; d = DST; r = RTDST)"
"");
exit(ERN_HELP);
}
@ -107,7 +110,7 @@ static void cs_parse_args(int argc, char *argv[])
{
char o;
while ((o = getopt(argc, argv, "46sS:p:m:M:d:tf:F:c:C:l:L:")) != -1) {
while ((o = getopt(argc, argv, "46sS:p:m:M:d:tf:F:c:C:l:L:H:")) != -1) {
switch (o) {
case 's':
opt.silent_send = true;
@ -169,6 +172,23 @@ static void cs_parse_args(int argc, char *argv[])
case 'L':
opt.sockopt.hlimit = atoi(optarg);
break;
case 'H':
opt.v6.exthdr.ena = true;
switch (optarg[0]) {
case 'h':
opt.v6.exthdr.val = IPV6_HOPOPTS;
break;
case 'd':
opt.v6.exthdr.val = IPV6_DSTOPTS;
break;
case 'r':
opt.v6.exthdr.val = IPV6_RTHDRDSTOPTS;
break;
default:
printf("Error: hdr type: %s\n", optarg);
break;
}
break;
}
}
@ -272,6 +292,17 @@ 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) {
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_len = CMSG_LEN(8);
*(__u64 *)CMSG_DATA(cmsg) = 0;
}
if (cmsg_len)
msg->msg_controllen = cmsg_len;