[bpf-next,3/5] selftests/bpf: Add connect_to_addr_str helper

Commit Message

Geliang Tang July 11, 2024, 2:52 a.m. UTC

From: Geliang Tang <[e-mail]>

Similar to connect_to_addr() helper for connecting to a server with the
given sockaddr_storage type address, this patch adds a new helper named
connect_to_addr_str() for connecting to a server with the given string
type address "addr_str", together with its "family" and "port" as other
parameters of connect_to_addr_str().

In connect_to_addr_str(), the parameters "family", "addr_str" and "port"
are used to create a sockaddr_storage type address "addr" by invoking
make_sockaddr(). Then pass this "addr" together with "addrlen", "type"
and "opts" to connect_to_addr().

Suggested-by: Martin KaFai Lau <[e-mail]>
Signed-off-by: Geliang Tang <[e-mail]>
---
 tools/testing/selftests/bpf/network_helpers.c | 17 +++++++++++++++++
 tools/testing/selftests/bpf/network_helpers.h |  2 ++
 2 files changed, 19 insertions(+)

Patch

diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 48c27c810db7..139fac70de00 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -301,6 +301,23 @@  int connect_to_addr(int type, const struct sockaddr_storage *addr, socklen_t add
 	return -1;
 }
 
+int connect_to_addr_str(int family, int type, const char *addr_str, __u16 port,
+			const struct network_helper_opts *opts)
+{
+	struct sockaddr_storage addr;
+	socklen_t addrlen;
+	int err;
+
+	if (!opts)
+		opts = &default_opts;
+
+	err = make_sockaddr(family, addr_str, port, &addr, &addrlen);
+	if (err)
+		return -1;
+
+	return connect_to_addr(type, &addr, addrlen, opts);
+}
+
 int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts)
 {
 	struct sockaddr_storage addr;
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index f39eeb5a4594..cce56955371f 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -69,6 +69,8 @@  int client_socket(int family, int type,
 		  const struct network_helper_opts *opts);
 int connect_to_addr(int type, const struct sockaddr_storage *addr, socklen_t len,
 		    const struct network_helper_opts *opts);
+int connect_to_addr_str(int family, int type, const char *addr_str, __u16 port,
+			const struct network_helper_opts *opts);
 int connect_to_fd(int server_fd, int timeout_ms);
 int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts);
 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms);