1*043036a2SApple OSS Distributions #include <darwintest.h>
2*043036a2SApple OSS Distributions #include <sys/socket.h>
3*043036a2SApple OSS Distributions #include <net/if.h>
4*043036a2SApple OSS Distributions #include <sys/ioctl.h>
5*043036a2SApple OSS Distributions
6*043036a2SApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*043036a2SApple OSS Distributions create_interfaces(const char *prefix, int num)
8*043036a2SApple OSS Distributions {
9*043036a2SApple OSS Distributions static int fd = -1;
10*043036a2SApple OSS Distributions
11*043036a2SApple OSS Distributions if (fd == -1) {
12*043036a2SApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*043036a2SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*043036a2SApple OSS Distributions }
15*043036a2SApple OSS Distributions for (int i = 0; i < num; i++) {
16*043036a2SApple OSS Distributions struct ifreq ifr = {};
17*043036a2SApple OSS Distributions
18*043036a2SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*043036a2SApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*043036a2SApple OSS Distributions if (errno == EEXIST) {
21*043036a2SApple OSS Distributions continue;
22*043036a2SApple OSS Distributions }
23*043036a2SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*043036a2SApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*043036a2SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*043036a2SApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*043036a2SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*043036a2SApple OSS Distributions if (i % 100 == 0) {
29*043036a2SApple OSS Distributions printf("created %s%d\n", prefix, i);
30*043036a2SApple OSS Distributions }
31*043036a2SApple OSS Distributions }
32*043036a2SApple OSS Distributions }
33*043036a2SApple OSS Distributions
34*043036a2SApple OSS Distributions
35*043036a2SApple OSS Distributions T_DECL(test_ifnet_overflow,
36*043036a2SApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*043036a2SApple OSS Distributions T_META_CHECK_LEAKS(false), T_META_TAG_VM_PREFERRED)
38*043036a2SApple OSS Distributions {
39*043036a2SApple OSS Distributions #if 1
40*043036a2SApple OSS Distributions T_SKIP("Not stable yet");
41*043036a2SApple OSS Distributions #else
42*043036a2SApple OSS Distributions create_interfaces("vlan", 32768);
43*043036a2SApple OSS Distributions create_interfaces("feth", 32768);
44*043036a2SApple OSS Distributions #endif
45*043036a2SApple OSS Distributions }
46