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selftests: net/psock_fanout: socket joins fanout when link is down

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Modify test_control_group to have toggle parameter.
When toggle is non-zero, loopback device will be set down for the
initialization of fd[1] which is still expected to successfully join
the fanout.

Signed-off-by: Gur Stavi <gur.stavi@huawei.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/6f4a506ed5f08f8fc00a966dec8febd1030c6e98.1728802323.git.gur.stavi@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Gur Stavi 2024-10-13 10:15:26 +03:00 committed by Jakub Kicinski
parent 2cee3e6e2e
commit 9317e8933e
1 changed files with 39 additions and 3 deletions
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42
tools/testing/selftests/net/psock_fanout.c
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@ -48,6 +48,7 @@
#include <string.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
@ -59,6 +60,33 @@
static uint32_t cfg_max_num_members;
static void loopback_set_up_down(int state_up)
{
struct ifreq ifreq = {};
int fd, err;
fd = socket(AF_PACKET, SOCK_RAW, 0);
if (fd < 0) {
perror("socket loopback");
exit(1);
}
strcpy(ifreq.ifr_name, "lo");
err = ioctl(fd, SIOCGIFFLAGS, &ifreq);
if (err) {
perror("SIOCGIFFLAGS");
exit(1);
}
if (state_up != !!(ifreq.ifr_flags & IFF_UP)) {
ifreq.ifr_flags ^= IFF_UP;
err = ioctl(fd, SIOCSIFFLAGS, &ifreq);
if (err) {
perror("SIOCSIFFLAGS");
exit(1);
}
}
close(fd);
}
/* Open a socket in a given fanout mode.
* @return -1 if mode is bad, a valid socket otherwise */
static int sock_fanout_open(uint16_t typeflags, uint16_t group_id)
@ -264,17 +292,22 @@ static void test_control_single(void)
}
/* Test illegal group with different modes or flags */
static void test_control_group(void)
static void test_control_group(int toggle)
{
int fds[2];
fprintf(stderr, "test: control multiple sockets\n");
if (toggle)
fprintf(stderr, "test: control multiple sockets with link down toggle\n");
else
fprintf(stderr, "test: control multiple sockets\n");
fds[0] = sock_fanout_open(PACKET_FANOUT_HASH, 0);
if (fds[0] == -1) {
fprintf(stderr, "ERROR: failed to open HASH socket\n");
exit(1);
}
if (toggle)
loopback_set_up_down(0);
if (sock_fanout_open(PACKET_FANOUT_HASH |
PACKET_FANOUT_FLAG_DEFRAG, 0) != -1) {
fprintf(stderr, "ERROR: joined group with wrong flag defrag\n");
@ -294,6 +327,8 @@ static void test_control_group(void)
fprintf(stderr, "ERROR: failed to join group\n");
exit(1);
}
if (toggle)
loopback_set_up_down(1);
if (close(fds[1]) || close(fds[0])) {
fprintf(stderr, "ERROR: closing sockets\n");
exit(1);
@ -489,7 +524,8 @@ int main(int argc, char **argv)
int port_off = 2, tries = 20, ret;
test_control_single();
test_control_group();
test_control_group(0);
test_control_group(1);
test_control_group_max_num_members();
test_unique_fanout_group_ids();