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

[Geliang Tang]

From: Geliang Tang <tanggeli...@kylinos.cn>

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 <martin....@kernel.org>
Signed-off-by: Geliang Tang <tanggeli...@kylinos.cn>
---
 tools/testing/selftests/bpf/network_helpers.c | 17 +++++++++++++++++
 tools/testing/selftests/bpf/network_helpers.h |  2 ++
 2 files changed, 19 insertions(+)

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);
-- 
2.43.0