1*94d3b452SApple OSS Distributions #include <darwintest.h>
2*94d3b452SApple OSS Distributions #include <sys/socket.h>
3*94d3b452SApple OSS Distributions #include <net/if.h>
4*94d3b452SApple OSS Distributions #include <sys/ioctl.h>
5*94d3b452SApple OSS Distributions
6*94d3b452SApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*94d3b452SApple OSS Distributions create_interfaces(const char *prefix, int num)
8*94d3b452SApple OSS Distributions {
9*94d3b452SApple OSS Distributions static int fd = -1;
10*94d3b452SApple OSS Distributions
11*94d3b452SApple OSS Distributions if (fd == -1) {
12*94d3b452SApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*94d3b452SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*94d3b452SApple OSS Distributions }
15*94d3b452SApple OSS Distributions for (int i = 0; i < num; i++) {
16*94d3b452SApple OSS Distributions struct ifreq ifr = {};
17*94d3b452SApple OSS Distributions
18*94d3b452SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*94d3b452SApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*94d3b452SApple OSS Distributions if (errno == EEXIST) {
21*94d3b452SApple OSS Distributions continue;
22*94d3b452SApple OSS Distributions }
23*94d3b452SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*94d3b452SApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*94d3b452SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*94d3b452SApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*94d3b452SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*94d3b452SApple OSS Distributions if (i % 100 == 0) {
29*94d3b452SApple OSS Distributions printf("created %s%d\n", prefix, i);
30*94d3b452SApple OSS Distributions }
31*94d3b452SApple OSS Distributions }
32*94d3b452SApple OSS Distributions }
33*94d3b452SApple OSS Distributions
34*94d3b452SApple OSS Distributions
35*94d3b452SApple OSS Distributions T_DECL(test_ifnet_overflow,
36*94d3b452SApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*94d3b452SApple OSS Distributions T_META_CHECK_LEAKS(false))
38*94d3b452SApple OSS Distributions {
39*94d3b452SApple OSS Distributions #if 1
40*94d3b452SApple OSS Distributions T_SKIP("Not stable yet");
41*94d3b452SApple OSS Distributions #else
42*94d3b452SApple OSS Distributions create_interfaces("vlan", 32768);
43*94d3b452SApple OSS Distributions create_interfaces("feth", 32768);
44*94d3b452SApple OSS Distributions #endif
45*94d3b452SApple OSS Distributions }
46