/*
* Copyright (c) 2016-2024 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
#include <errno.h>
#include <uuid/uuid.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#include <net/if_utun.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/kern_control.h>
#include <sys/sys_domain.h>
#include <darwintest.h>
#include "skywalk_test_driver.h"
#include "skywalk_test_common.h"
#include "skywalk_test_utils.h"
static channel_t channel;
static int tunsock;
static pthread_t thread;
static void *
thread1(void *unused)
{
int kq = kqueue();
struct kevent kevin, kevout;
int error;
memset(&kevin, 0, sizeof(kevin));
memset(&kevout, 0, sizeof(kevout));
EV_SET(&kevin, os_channel_get_fd(channel), EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, NULL);
error = kevent(kq, &kevin, 1, &kevout, 1, NULL);
/* This shouldn't be reached, but if it does, dump some debug info */
SKT_LOG("unexpeced kevent returned %d, errno %d\n", error, errno);
T_LOG("kevin ident 0x%"PRIxPTR", filter %d, "
"flags 0x%04x fflags 0x%08x data 0x%"PRIxPTR" udata %p\n",
kevin.ident, kevin.filter, kevin.flags, kevin.fflags,
kevin.data, kevin.udata);
T_LOG("kevout ident 0x%"PRIxPTR", filter %d, "
"flags 0x%04x fflags 0x%08x data 0x%"PRIxPTR" udata %p\n",
kevout.ident, kevout.filter, kevout.flags, kevout.fflags,
kevout.data, kevout.udata);
assert(0);
}
static void
skt_utun27302538_common(void)
{
tunsock = sktu_create_interface(SKTU_IFT_UTUN, SKTU_IFF_ENABLE_NETIF);
assert(tunsock);
usleep(100000);
channel = sktu_create_interface_channel(SKTU_IFT_UTUN, tunsock);
assert(channel);
}
/*
* <rdar://problem/27302538> kernel panic during skywalk channel closure: panic in sk_free_rings()
*/
static int
skt_utun27302538a_main(int argc, char *argv[])
{
int error;
skt_utun27302538_common();
error = pthread_create(&thread, NULL, &thread1, NULL);
SKTC_ASSERT_ERR(error == 0);
/* Make sure pthread gets into kevent */
usleep(100000);
close(tunsock);
os_channel_destroy(channel);
/* Give thread1 some time to act if it happens to */
usleep(100000);
return 0;
}
static int
skt_utun27302538b_main(int argc, char *argv[])
{
int error;
skt_utun27302538_common();
error = pthread_create(&thread, NULL, &thread1, NULL);
SKTC_ASSERT_ERR(error == 0);
/* Make sure pthread gets into kevent */
usleep(100000);
close(tunsock);
/* Give thread1 some time to act if it happens to */
usleep(100000);
return 0;
}
static int
skt_utun27302538c_main(int argc, char *argv[])
{
int error;
skt_utun27302538_common();
close(tunsock);
error = pthread_create(&thread, NULL, &thread1, NULL);
SKTC_ASSERT_ERR(error == 0);
/* Make sure pthread gets into kevent */
usleep(100000);
os_channel_destroy(channel);
/* Give thread1 some time to act if it happens to */
usleep(100000);
return 0;
}
static int
skt_utun27302538d_main(int argc, char *argv[])
{
int error;
skt_utun27302538_common();
close(tunsock);
error = pthread_create(&thread, NULL, &thread1, NULL);
SKTC_ASSERT_ERR(error == 0);
/* Make sure pthread gets into kevent */
usleep(100000);
return 0;
}
struct skywalk_test skt_utun27302538a = {
"utun27302538a", "test cleaning up utun kpipe while channel is in kevent (case a)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27302538a_main,
};
struct skywalk_test skt_utun27302538b = {
"utun27302538b", "test cleaning up utun kpipe while channel is in kevent (case b)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27302538b_main,
};
struct skywalk_test skt_utun27302538c = {
"utun27302538c", "test cleaning up utun kpipe while channel is in kevent (case c)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27302538c_main,
};
struct skywalk_test skt_utun27302538d = {
"utun27302538d", "test cleaning up utun kpipe while channel is in kevent (case d)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27302538d_main,
};
/****************************************************************/
/*
* <rdar://problem/27646755> cleanup if_utun pcb lock and fix race in utun disable channel
*/
static void *
thread2(void *unused)
{
close(tunsock);
return 0;
}
static int
skt_utun27646755_common(int iterations)
{
int i;
time_t start = time(NULL);
time_t now, then = start;
for (i = 0; i < iterations; i++) {
int error;
skt_utun27302538_common();
error = pthread_create(&thread, NULL, &thread2, NULL);
SKTC_ASSERT_ERR(error == 0);
os_channel_destroy(channel);
error = pthread_join(thread, NULL);
SKTC_ASSERT_ERR(error == 0);
now = time(NULL);
if (now > then) {
T_LOG("time %ld completed iteration %d of %d (%2.2f%% est %ld secs left)\n",
now - start, i + 1, iterations, (double)(i + 1) * 100 / iterations,
(long)((double)(now - start) * iterations / (i + 1)) - (now - start));
then = now;
}
}
return 0;
}
static int
skt_utun27646755_main(int argc, char *argv[])
{
return skt_utun27646755_common(20);
}
static int
skt_utun27646755slow_main(int argc, char *argv[])
{
return skt_utun27646755_common(1000);
}
struct skywalk_test skt_utun27646755 = {
"utun27646755", "race cleaning up channel and utun socket (20 iterations)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27646755_main,
};
struct skywalk_test skt_utun27646755slow = {
"utun27646755slow", "race cleaning up channel and utun socket (1000 iterations)",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_KERNEL_PIPE,
skt_utun27646755slow_main,
};
/****************************************************************/