tools/testing/selftests/net/sctp_hello.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/sctp_hello.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/sctp_hello.c
Extension
.c
Size
2612 bytes
Lines
125
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ret < 0) {
			printf("failed to bind to address\n");
			return -1;
		}
	}

	set_addr(&ss, argv[3], argv[4], &len);
	ret = connect(csk, (struct sockaddr *)&ss, len);
	if (ret < 0)
		return -1;

	recv(csk, NULL, 0, 0);
	close(csk);

	return 0;
}

int main(int argc, char *argv[])
{
	struct sockaddr_storage ss;
	int lsk, csk, ret, len;

	if (argc < 2 || (strcmp(argv[1], "server") && strcmp(argv[1], "client"))) {
		printf("%s server|client ...\n", argv[0]);
		return -1;
	}

	if (!strcmp(argv[1], "client"))
		return do_client(argc, argv);

	if (argc < 5) {
		printf("%s server -4|6 IP PORT [IFACE]\n", argv[0]);
		return -1;
	}

	ss.ss_family = !strcmp(argv[2], "-4") ? AF_INET : AF_INET6;
	lsk = socket(ss.ss_family, SOCK_STREAM, IPPROTO_SCTP);
	if (lsk < 0) {
		printf("failed to create lsk\n");
		return -1;
	}

	if (argc >= 6) {
		ret = setsockopt(lsk, SOL_SOCKET, SO_BINDTODEVICE,
				 argv[5], strlen(argv[5]) + 1);
		if (ret < 0) {
			printf("failed to bind to device\n");
			return -1;
		}
	}

	set_addr(&ss, argv[3], argv[4], &len);
	ret = bind(lsk, (struct sockaddr *)&ss, len);
	if (ret < 0) {
		printf("failed to bind to address\n");
		return -1;
	}

	ret = listen(lsk, 5);
	if (ret < 0) {
		printf("failed to listen on port\n");
		return -1;
	}

	csk = accept(lsk, (struct sockaddr *)NULL, (socklen_t *)NULL);
	if (csk < 0) {
		printf("failed to accept new client\n");
		return -1;
	}

	close(csk);
	close(lsk);

	return 0;
}

Annotation

Implementation Notes