Commit a22982c3 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

selftests: net: basic test for IPV6_2292* 



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

Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 05ae83d5

tools/testing/selftests/net/cmsg_ipv6.sh

+9 −0
Original line number Diff line number Diff line
@@ -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"

tools/testing/selftests/net/cmsg_sender.c

+32 −1
Original line number Diff line number Diff line
@@ -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;