From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
To: mptcp@lists.linux.dev, Mat Martineau <martineau@kernel.org>,
Geliang Tang <geliang@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
Neal Cardwell <ncardwell@google.com>,
Kuniyuki Iwashima <kuniyu@google.com>,
David Ahern <dsahern@kernel.org>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Matthieu Baerts (NGI0)" <matttbe@kernel.org>,
Geliang Tang <geliang@kernel.org>
Subject: [PATCH net-next 1/4] mptcp: sockopt: drop redundant tcp_getsockopt
Date: Wed, 16 Jul 2025 12:28:03 +0200 [thread overview]
Message-ID: <20250716-net-next-mptcp-tcp_maxseg-v1-1-548d3a5666f6@kernel.org> (raw)
In-Reply-To: <20250716-net-next-mptcp-tcp_maxseg-v1-0-548d3a5666f6@kernel.org>
From: Geliang Tang <tanggeliang@kylinos.cn>
tcp_getsockopt() is called twice in mptcp_getsockopt_first_sf_only() in
different conditions, which makes the code a bit redundant.
The first call to tcp_getsockopt() when the first subflow exists can be
replaced by going to a new label "get" before the second call.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
net/mptcp/sockopt.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c
index 3caa0a9d3b3885ce6399570f2d98a2e8f103638d..afa54fba51e215bc2efb21f16ed7d0a0fb120972 100644
--- a/net/mptcp/sockopt.c
+++ b/net/mptcp/sockopt.c
@@ -914,10 +914,8 @@ static int mptcp_getsockopt_first_sf_only(struct mptcp_sock *msk, int level, int
lock_sock(sk);
ssk = msk->first;
- if (ssk) {
- ret = tcp_getsockopt(ssk, level, optname, optval, optlen);
- goto out;
- }
+ if (ssk)
+ goto get;
ssk = __mptcp_nmpc_sk(msk);
if (IS_ERR(ssk)) {
@@ -925,6 +923,7 @@ static int mptcp_getsockopt_first_sf_only(struct mptcp_sock *msk, int level, int
goto out;
}
+get:
ret = tcp_getsockopt(ssk, level, optname, optval, optlen);
out:
--
2.48.1
next prev parent reply other threads:[~2025-07-16 10:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-16 10:28 [PATCH net-next 0/4] mptcp: add TCP_MAXSEG sockopt support Matthieu Baerts (NGI0)
2025-07-16 10:28 ` Matthieu Baerts (NGI0) [this message]
2025-07-16 10:28 ` [PATCH net-next 2/4] tcp: add tcp_sock_set_maxseg Matthieu Baerts (NGI0)
2025-07-17 1:25 ` Geliang Tang
2025-07-16 10:28 ` [PATCH net-next 3/4] mptcp: add TCP_MAXSEG sockopt support Matthieu Baerts (NGI0)
2025-07-16 10:28 ` [PATCH net-next 4/4] mptcp: fix typo in a comment Matthieu Baerts (NGI0)
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