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selftests: nettest: Add --{force,no}-bind-key-ifindex

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These options allow explicit control over the TCP_MD5SIG_FLAG_IFINDEX
flag instead of always setting it based on binding to an interface.

Do this by converting to getopt_long because nettest has too many
single-character flags already and getopt_long is widely used in
selftests.

Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Leonard Crestez 2021-10-15 10:26:06 +03:00 committed by David S. Miller
parent a76c2315be
commit 78a9cf6143
1 changed files with 26 additions and 2 deletions
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28
tools/testing/selftests/net/nettest.c
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@ -28,6 +28,7 @@
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include <getopt.h>
#include <linux/xfrm.h>
#include <linux/ipsec.h>
@ -101,6 +102,8 @@ struct sock_args {
struct sockaddr_in6 v6;
} md5_prefix;
unsigned int prefix_len;
/* 0: default, -1: force off, +1: force on */
int bind_key_ifindex;
/* expected addresses and device index for connection */
const char *expected_dev;
@ -271,11 +274,14 @@ static int tcp_md5sig(int sd, void *addr, socklen_t alen, struct sock_args *args
}
memcpy(&md5sig.tcpm_addr, addr, alen);
if (args->ifindex) {
if ((args->ifindex && args->bind_key_ifindex >= 0) || args->bind_key_ifindex >= 1) {
opt = TCP_MD5SIG_EXT;
md5sig.tcpm_flags |= TCP_MD5SIG_FLAG_IFINDEX;
md5sig.tcpm_ifindex = args->ifindex;
log_msg("TCP_MD5SIG_FLAG_IFINDEX set tcpm_ifindex=%d\n", md5sig.tcpm_ifindex);
} else {
log_msg("TCP_MD5SIG_FLAG_IFINDEX off\n", md5sig.tcpm_ifindex);
}
rc = setsockopt(sd, IPPROTO_TCP, opt, &md5sig, sizeof(md5sig));
@ -1822,6 +1828,14 @@ static int ipc_parent(int cpid, int fd, struct sock_args *args)
}
#define GETOPT_STR "sr:l:c:p:t:g:P:DRn:M:X:m:d:I:BN:O:SCi6xL:0:1:2:3:Fbq"
#define OPT_FORCE_BIND_KEY_IFINDEX 1001
#define OPT_NO_BIND_KEY_IFINDEX 1002
static struct option long_opts[] = {
{"force-bind-key-ifindex", 0, 0, OPT_FORCE_BIND_KEY_IFINDEX},
{"no-bind-key-ifindex", 0, 0, OPT_NO_BIND_KEY_IFINDEX},
{0, 0, 0, 0}
};
static void print_usage(char *prog)
{
@ -1858,6 +1872,10 @@ static void print_usage(char *prog)
" -M password use MD5 sum protection\n"
" -X password MD5 password for client mode\n"
" -m prefix/len prefix and length to use for MD5 key\n"
" --no-bind-key-ifindex: Force TCP_MD5SIG_FLAG_IFINDEX off\n"
" --force-bind-key-ifindex: Force TCP_MD5SIG_FLAG_IFINDEX on\n"
" (default: only if -I is passed)\n"
"\n"
" -g grp multicast group (e.g., 239.1.1.1)\n"
" -i interactive mode (default is echo and terminate)\n"
"\n"
@ -1893,7 +1911,7 @@ int main(int argc, char *argv[])
* process input args
*/
while ((rc = getopt(argc, argv, GETOPT_STR)) != -1) {
while ((rc = getopt_long(argc, argv, GETOPT_STR, long_opts, NULL)) != -1) {
switch (rc) {
case 'B':
both_mode = 1;
@ -1966,6 +1984,12 @@ int main(int argc, char *argv[])
case 'M':
args.password = optarg;
break;
case OPT_FORCE_BIND_KEY_IFINDEX:
args.bind_key_ifindex = 1;
break;
case OPT_NO_BIND_KEY_IFINDEX:
args.bind_key_ifindex = -1;
break;
case 'X':
args.client_pw = optarg;
break;