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[bpf-next,v2,2/9] selftests/bpf: Add socket_kind_to_str() to socket_helpers

Message ID 20250411-selftests-sockmap-redir-v2-2-5f9b018d6704@rbox.co (mailing list archive)
State Needs ACK
Delegated to: BPF
Headers show
Series selftests/bpf: Test sockmap/sockhash redirection | expand

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Commit Message

Michal Luczaj April 11, 2025, 11:32 a.m. UTC 
Add function that returns string representation of socket's domain/type.

Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
---
 .../selftests/bpf/prog_tests/socket_helpers.h      | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)

Comments

Jakub Sitnicki April 18, 2025, 4:08 p.m. UTC | #1 
On Fri, Apr 11, 2025 at 01:32 PM +02, Michal Luczaj wrote:
> Add function that returns string representation of socket's domain/type.
>
> Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
> Signed-off-by: Michal Luczaj <mhal@rbox.co>
> ---

Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/socket_helpers.h b/tools/testing/selftests/bpf/prog_tests/socket_helpers.h
index e505c2f2595a24be9dd5b534deef4793f9a02f77..e02cabcc814e9a6a11d61ad02cf38696fb0f27ff 100644
--- a/tools/testing/selftests/bpf/prog_tests/socket_helpers.h
+++ b/tools/testing/selftests/bpf/prog_tests/socket_helpers.h
@@ -410,4 +410,59 @@  static inline int create_socket_pairs(int family, int sotype, int *c0, int *c1,
 	return err;
 }
 
+static inline const char *socket_kind_to_str(int sock_fd)
+{
+	socklen_t opt_len;
+	int domain, type;
+
+	opt_len = sizeof(domain);
+	if (getsockopt(sock_fd, SOL_SOCKET, SO_DOMAIN, &domain, &opt_len))
+		FAIL_ERRNO("getsockopt(SO_DOMAIN)");
+
+	opt_len = sizeof(type);
+	if (getsockopt(sock_fd, SOL_SOCKET, SO_TYPE, &type, &opt_len))
+		FAIL_ERRNO("getsockopt(SO_TYPE)");
+
+	switch (domain) {
+	case AF_INET:
+		switch (type) {
+		case SOCK_STREAM:
+			return "tcp4";
+		case SOCK_DGRAM:
+			return "udp4";
+		}
+		break;
+	case AF_INET6:
+		switch (type) {
+		case SOCK_STREAM:
+			return "tcp6";
+		case SOCK_DGRAM:
+			return "udp6";
+		}
+		break;
+	case AF_UNIX:
+		switch (type) {
+		case SOCK_STREAM:
+			return "u_str";
+		case SOCK_DGRAM:
+			return "u_dgr";
+		case SOCK_SEQPACKET:
+			return "u_seq";
+		}
+		break;
+	case AF_VSOCK:
+		switch (type) {
+		case SOCK_STREAM:
+			return "v_str";
+		case SOCK_DGRAM:
+			return "v_dgr";
+		case SOCK_SEQPACKET:
+			return "v_seq";
+		}
+		break;
+	}
+
+	return "???";
+}
+
 #endif // __SOCKET_HELPERS__