From nobody Thu Nov 27 14:02:35 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1724C315D32 for ; Wed, 26 Nov 2025 10:40:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764153631; cv=none; b=sM1+TCzMo6yIHPBqg1vWbpFhB7+1KPmM7Wtf7XfZmlM2gTqMsc+W5WYKx9zdoj9JBtpwzYmjw4Np+f2tZwEVBHD8FbBM0eIhQ7TqLICZdyO+KKc4RF6bDenJdahz/OqIGXq9hs6GQhZoX9b+ewM3aTrp382BLqd9t+IPur5ulKg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764153631; c=relaxed/simple; bh=sj/rDpT3m39PBkRW4dkQHD46hWmrQGYW4HnSuwUyocg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kzxBtPE6rHHV/VSdxh/IO1YISYTGIkHHFNdtIA9+1Q7sjZbgjfLSI6IJujN9cjQ2WLIrj9nlYKp9vBABANHJ1m8531APrVYpHB/lfC1JAQOOSMlebfF3jFm1WYVJ5bT5f8HUD1AtCTJBh+gZBLYS01hrnRZRdRY8+xCyv6u+A6g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=omv9sInZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="omv9sInZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 39017C113D0; Wed, 26 Nov 2025 10:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764153630; bh=sj/rDpT3m39PBkRW4dkQHD46hWmrQGYW4HnSuwUyocg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=omv9sInZW+y5OHnIa7GEWTCLMQPp7isONEICCPILJBnBqhQduu8pFLZ8lBeZELrh/ 9yenNlz7lkA65jKXlz7anAdo5+heIc005KsPlzgAzUP5o0WaabS6FRSdAkiJqGmpGl FCATizJ7I0ex7IaS/u6cdVgZpX4ieisS9QvVcvXwwZJOSOVemAJME5pXmz98Pia88I Wkqa6O/4Hs1TrmmLIY5Xu8Wg2DTDkXrPX2CB+k6ItbNJABaobYqbRczAZSlv0MMWlw n3dN4gyp6nSaJ3SH52BQM8R9xTXaKndODgSZCuY6sxCSPl0q2h7PdowU9cVa5LF3OP x7lRyf8L/avtg== From: Geliang Tang To: mptcp@lists.linux.dev, hare@suse.de, hare@kernel.org Cc: Geliang Tang , Hui Zhu , Gang Yan , zhenwei pi Subject: [RFC mptcp-next v2 3/7] mptcp: add sock_set_nodelay Date: Wed, 26 Nov 2025 18:40:00 +0800 Message-ID: <8d655baf1d091f6960c4ed815d20b4a7f6eb0414.1764152990.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang Implement an MPTCP-specific sock_set_nodelay helper, which will be used for NVMe over MPTCP. Co-developed-by: Hui Zhu Signed-off-by: Hui Zhu Co-developed-by: Gang Yan Signed-off-by: Gang Yan Co-developed-by: zhenwei pi Signed-off-by: zhenwei pi Signed-off-by: Geliang Tang --- include/net/mptcp.h | 4 ++++ net/mptcp/protocol.c | 18 ++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/net/mptcp.h b/include/net/mptcp.h index c7bf444eee56..4fc8f08c6588 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -239,6 +239,8 @@ static inline __be32 mptcp_reset_option(const struct sk= _buff *skb) void mptcp_active_detect_blackhole(struct sock *sk, bool expired); =20 void mptcp_sock_set_reuseaddr(struct sock *sk); + +void mptcp_sock_set_nodelay(struct sock *sk); #else =20 static inline void mptcp_init(void) @@ -327,6 +329,8 @@ static inline __be32 mptcp_reset_option(const struct sk= _buff *skb) { return hto static inline void mptcp_active_detect_blackhole(struct sock *sk, bool exp= ired) { } =20 static inline void mptcp_sock_set_reuseaddr(struct sock *sk) { } + +static inline void mptcp_sock_set_nodelay(struct sock *sk) { } #endif /* CONFIG_MPTCP */ =20 #if IS_ENABLED(CONFIG_MPTCP_IPV6) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 21067245a8f5..9790bc74a0b7 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -3779,6 +3779,24 @@ void mptcp_sock_set_reuseaddr(struct sock *sk) } EXPORT_SYMBOL(mptcp_sock_set_reuseaddr); =20 +void mptcp_sock_set_nodelay(struct sock *sk) +{ + struct mptcp_sock *msk =3D mptcp_sk(sk); + struct sock *ssk; + + lock_sock(sk); + ssk =3D __mptcp_nmpc_sk(msk); + if (IS_ERR(ssk)) + goto unlock; + + lock_sock(ssk); + __tcp_sock_set_nodelay(ssk, true); + release_sock(ssk); +unlock: + release_sock(sk); +} +EXPORT_SYMBOL(mptcp_sock_set_nodelay); + bool mptcp_finish_join(struct sock *ssk) { struct mptcp_subflow_context *subflow =3D mptcp_subflow_ctx(ssk); --=20 2.51.0