linux-kernel - [PATCH net-next 3/7] selftests: mptcp: add struct params in mptcp

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Message-Id: <20250502-net-next-mptcp-sft-inc-cover-v1-3-68eec95898fb@kernel.org>
Date: Fri, 02 May 2025 14:29:23 +0200
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: mptcp@...ts.linux.dev, Mat Martineau <martineau@...nel.org>, 
 Geliang Tang <geliang@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
 Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, 
 Gang Yan <yangang@...inos.cn>
Subject: [PATCH net-next 3/7] selftests: mptcp: add struct params in
 mptcp_diag

From: Gang Yan <yangang@...inos.cn>

This patch adds a struct named 'params' to save 'target_token' and other
future parameters. This structure facilitates future function expansions.

Co-developed-by: Geliang Tang <geliang@...nel.org>
Signed-off-by: Geliang Tang <geliang@...nel.org>
Signed-off-by: Gang Yan <yangang@...inos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
 tools/testing/selftests/net/mptcp/mptcp_diag.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_diag.c b/tools/testing/selftests/net/mptcp/mptcp_diag.c
index 37d5015ad08c44485f1964593ecb1a7b25d95934..ea7cb1128044ab7f9bad50cb29856c2e290f385f 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_diag.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_diag.c
@@ -19,6 +19,10 @@
 #define IPPROTO_MPTCP 262
 #endif

+struct params {
+	__u32 target_token;
+};
+
 struct mptcp_info {
 	__u8	mptcpi_subflows;
 	__u8	mptcpi_add_addr_signal;
@@ -237,7 +241,7 @@ static void get_mptcpinfo(__u32 token)
 	close(fd);
 }

-static void parse_opts(int argc, char **argv, __u32 *target_token)
+static void parse_opts(int argc, char **argv, struct params *p)
 {
 	int c;

@@ -250,7 +254,7 @@ static void parse_opts(int argc, char **argv, __u32 *target_token)
 			die_usage(0);
 			break;
 		case 't':
-			sscanf(optarg, "%x", target_token);
+			sscanf(optarg, "%x", &p->target_token);
 			break;
 		default:
 			die_usage(1);
@@ -261,10 +265,12 @@ static void parse_opts(int argc, char **argv, __u32 *target_token)

 int main(int argc, char *argv[])
 {
-	__u32 target_token;
+	struct params p = { 0 };

-	parse_opts(argc, argv, &target_token);
-	get_mptcpinfo(target_token);
+	parse_opts(argc, argv, &p);
+
+	if (p.target_token)
+		get_mptcpinfo(p.target_token);

 	return 0;
 }

-- 
2.48.1