1*e3723e1fSApple OSS Distributions #include <darwintest.h>
2*e3723e1fSApple OSS Distributions #include <sys/socket.h>
3*e3723e1fSApple OSS Distributions #include <net/if.h>
4*e3723e1fSApple OSS Distributions #include <sys/ioctl.h>
5*e3723e1fSApple OSS Distributions
6*e3723e1fSApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*e3723e1fSApple OSS Distributions create_interfaces(const char *prefix, int num)
8*e3723e1fSApple OSS Distributions {
9*e3723e1fSApple OSS Distributions static int fd = -1;
10*e3723e1fSApple OSS Distributions
11*e3723e1fSApple OSS Distributions if (fd == -1) {
12*e3723e1fSApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*e3723e1fSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*e3723e1fSApple OSS Distributions }
15*e3723e1fSApple OSS Distributions for (int i = 0; i < num; i++) {
16*e3723e1fSApple OSS Distributions struct ifreq ifr = {};
17*e3723e1fSApple OSS Distributions
18*e3723e1fSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*e3723e1fSApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*e3723e1fSApple OSS Distributions if (errno == EEXIST) {
21*e3723e1fSApple OSS Distributions continue;
22*e3723e1fSApple OSS Distributions }
23*e3723e1fSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*e3723e1fSApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*e3723e1fSApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*e3723e1fSApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*e3723e1fSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*e3723e1fSApple OSS Distributions if (i % 100 == 0) {
29*e3723e1fSApple OSS Distributions printf("created %s%d\n", prefix, i);
30*e3723e1fSApple OSS Distributions }
31*e3723e1fSApple OSS Distributions }
32*e3723e1fSApple OSS Distributions }
33*e3723e1fSApple OSS Distributions
34*e3723e1fSApple OSS Distributions
35*e3723e1fSApple OSS Distributions T_DECL(test_ifnet_overflow,
36*e3723e1fSApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*e3723e1fSApple OSS Distributions T_META_CHECK_LEAKS(false), T_META_TAG_VM_PREFERRED)
38*e3723e1fSApple OSS Distributions {
39*e3723e1fSApple OSS Distributions #if 1
40*e3723e1fSApple OSS Distributions T_SKIP("Not stable yet");
41*e3723e1fSApple OSS Distributions #else
42*e3723e1fSApple OSS Distributions create_interfaces("vlan", 32768);
43*e3723e1fSApple OSS Distributions create_interfaces("feth", 32768);
44*e3723e1fSApple OSS Distributions #endif
45*e3723e1fSApple OSS Distributions }
46