1*c54f35caSApple OSS Distributions #include <darwintest.h>
2*c54f35caSApple OSS Distributions #include <sys/socket.h>
3*c54f35caSApple OSS Distributions #include <net/if.h>
4*c54f35caSApple OSS Distributions #include <sys/ioctl.h>
5*c54f35caSApple OSS Distributions
6*c54f35caSApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*c54f35caSApple OSS Distributions create_interfaces(const char *prefix, int num)
8*c54f35caSApple OSS Distributions {
9*c54f35caSApple OSS Distributions static int fd = -1;
10*c54f35caSApple OSS Distributions
11*c54f35caSApple OSS Distributions if (fd == -1) {
12*c54f35caSApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*c54f35caSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*c54f35caSApple OSS Distributions }
15*c54f35caSApple OSS Distributions for (int i = 0; i < num; i++) {
16*c54f35caSApple OSS Distributions struct ifreq ifr = {};
17*c54f35caSApple OSS Distributions
18*c54f35caSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*c54f35caSApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*c54f35caSApple OSS Distributions if (errno == EEXIST) {
21*c54f35caSApple OSS Distributions continue;
22*c54f35caSApple OSS Distributions }
23*c54f35caSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*c54f35caSApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*c54f35caSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*c54f35caSApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*c54f35caSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*c54f35caSApple OSS Distributions if (i % 100 == 0) {
29*c54f35caSApple OSS Distributions printf("created %s%d\n", prefix, i);
30*c54f35caSApple OSS Distributions }
31*c54f35caSApple OSS Distributions }
32*c54f35caSApple OSS Distributions }
33*c54f35caSApple OSS Distributions
34*c54f35caSApple OSS Distributions
35*c54f35caSApple OSS Distributions T_DECL(test_ifnet_overflow,
36*c54f35caSApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*c54f35caSApple OSS Distributions T_META_CHECK_LEAKS(false))
38*c54f35caSApple OSS Distributions {
39*c54f35caSApple OSS Distributions #if 1
40*c54f35caSApple OSS Distributions T_SKIP("Not stable yet");
41*c54f35caSApple OSS Distributions #else
42*c54f35caSApple OSS Distributions create_interfaces("vlan", 32768);
43*c54f35caSApple OSS Distributions create_interfaces("feth", 32768);
44*c54f35caSApple OSS Distributions #endif
45*c54f35caSApple OSS Distributions }
46