1*d4514f0bSApple OSS Distributions #include <darwintest.h>
2*d4514f0bSApple OSS Distributions #include <sys/socket.h>
3*d4514f0bSApple OSS Distributions #include <net/if.h>
4*d4514f0bSApple OSS Distributions #include <sys/ioctl.h>
5*d4514f0bSApple OSS Distributions
6*d4514f0bSApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*d4514f0bSApple OSS Distributions create_interfaces(const char *prefix, int num)
8*d4514f0bSApple OSS Distributions {
9*d4514f0bSApple OSS Distributions static int fd = -1;
10*d4514f0bSApple OSS Distributions
11*d4514f0bSApple OSS Distributions if (fd == -1) {
12*d4514f0bSApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*d4514f0bSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*d4514f0bSApple OSS Distributions }
15*d4514f0bSApple OSS Distributions for (int i = 0; i < num; i++) {
16*d4514f0bSApple OSS Distributions struct ifreq ifr = {};
17*d4514f0bSApple OSS Distributions
18*d4514f0bSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*d4514f0bSApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*d4514f0bSApple OSS Distributions if (errno == EEXIST) {
21*d4514f0bSApple OSS Distributions continue;
22*d4514f0bSApple OSS Distributions }
23*d4514f0bSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*d4514f0bSApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*d4514f0bSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*d4514f0bSApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*d4514f0bSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*d4514f0bSApple OSS Distributions if (i % 100 == 0) {
29*d4514f0bSApple OSS Distributions printf("created %s%d\n", prefix, i);
30*d4514f0bSApple OSS Distributions }
31*d4514f0bSApple OSS Distributions }
32*d4514f0bSApple OSS Distributions }
33*d4514f0bSApple OSS Distributions
34*d4514f0bSApple OSS Distributions
35*d4514f0bSApple OSS Distributions T_DECL(test_ifnet_overflow,
36*d4514f0bSApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*d4514f0bSApple OSS Distributions T_META_CHECK_LEAKS(false), T_META_TAG_VM_PREFERRED)
38*d4514f0bSApple OSS Distributions {
39*d4514f0bSApple OSS Distributions #if 1
40*d4514f0bSApple OSS Distributions T_SKIP("Not stable yet");
41*d4514f0bSApple OSS Distributions #else
42*d4514f0bSApple OSS Distributions create_interfaces("vlan", 32768);
43*d4514f0bSApple OSS Distributions create_interfaces("feth", 32768);
44*d4514f0bSApple OSS Distributions #endif
45*d4514f0bSApple OSS Distributions }
46