1*bbb1b6f9SApple OSS Distributions #include <darwintest.h>
2*bbb1b6f9SApple OSS Distributions #include <sys/socket.h>
3*bbb1b6f9SApple OSS Distributions #include <net/if.h>
4*bbb1b6f9SApple OSS Distributions #include <sys/ioctl.h>
5*bbb1b6f9SApple OSS Distributions
6*bbb1b6f9SApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*bbb1b6f9SApple OSS Distributions create_interfaces(const char *prefix, int num)
8*bbb1b6f9SApple OSS Distributions {
9*bbb1b6f9SApple OSS Distributions static int fd = -1;
10*bbb1b6f9SApple OSS Distributions
11*bbb1b6f9SApple OSS Distributions if (fd == -1) {
12*bbb1b6f9SApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*bbb1b6f9SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*bbb1b6f9SApple OSS Distributions }
15*bbb1b6f9SApple OSS Distributions for (int i = 0; i < num; i++) {
16*bbb1b6f9SApple OSS Distributions struct ifreq ifr = {};
17*bbb1b6f9SApple OSS Distributions
18*bbb1b6f9SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*bbb1b6f9SApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*bbb1b6f9SApple OSS Distributions if (errno == EEXIST) {
21*bbb1b6f9SApple OSS Distributions continue;
22*bbb1b6f9SApple OSS Distributions }
23*bbb1b6f9SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*bbb1b6f9SApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*bbb1b6f9SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*bbb1b6f9SApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*bbb1b6f9SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*bbb1b6f9SApple OSS Distributions if (i % 100 == 0) {
29*bbb1b6f9SApple OSS Distributions printf("created %s%d\n", prefix, i);
30*bbb1b6f9SApple OSS Distributions }
31*bbb1b6f9SApple OSS Distributions }
32*bbb1b6f9SApple OSS Distributions }
33*bbb1b6f9SApple OSS Distributions
34*bbb1b6f9SApple OSS Distributions
35*bbb1b6f9SApple OSS Distributions T_DECL(test_ifnet_overflow,
36*bbb1b6f9SApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*bbb1b6f9SApple OSS Distributions T_META_CHECK_LEAKS(false), T_META_TAG_VM_PREFERRED)
38*bbb1b6f9SApple OSS Distributions {
39*bbb1b6f9SApple OSS Distributions #if 1
40*bbb1b6f9SApple OSS Distributions T_SKIP("Not stable yet");
41*bbb1b6f9SApple OSS Distributions #else
42*bbb1b6f9SApple OSS Distributions create_interfaces("vlan", 32768);
43*bbb1b6f9SApple OSS Distributions create_interfaces("feth", 32768);
44*bbb1b6f9SApple OSS Distributions #endif
45*bbb1b6f9SApple OSS Distributions }
46