From nobody Thu Sep 19 02:10:38 2024 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 C23CF18FDC2; Wed, 5 Jun 2024 07:16:20 +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=1717571780; cv=none; b=ZPmQvKLO7OzIXcVGeneo0791rCNytnUqJ067f4B6AcG3E7vZd4c+nhpZGJbJGbjwBlRCgOW6tfdqnj/13IWIYiZjgwO0ZC6e1d2q8zS42SNzu4T4qtClLYKwOck/sCznNPzOI7b/q7IS67T/hx6lQoaRndpyM7XwrsJFiDh5z8I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717571780; c=relaxed/simple; bh=1PI2nXrsvIcrYo4MrlKEOdaWNrzEuMuFERHCGG4asfI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=QS1sFf4d/I9PjD4l2MfuTCg0MuLGVXVt8yius+Lb5U1j2f55OBEW7yPhSoQH/03kmLv34uEFFOAQzy5Vai+/szOcP4jBWrur29rsi6PZxNYk/rx2yY7Yum5mE+TfHnn+fgf5CMZIoMAom+zPEzgPBWqWrVGLxeOzeE453JLgpDA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WihXUOUt; 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="WihXUOUt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4CC0C4AF0B; Wed, 5 Jun 2024 07:16:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717571780; bh=1PI2nXrsvIcrYo4MrlKEOdaWNrzEuMuFERHCGG4asfI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=WihXUOUt6uD/x5X6EzdVxOeS4ehKCRai5kkzTcyxiARJgmmNTER85Fqu4AS6y2TWB iA9fj7TTROTpPIH+W+O1/1aTrbk41Rq4KinGVFIayj89DJi1Fud1gF65xTf7gVfPFH LGI4uAbbs0ycfWKKujrly6n5+RrOX9DsRG4UC+igAwMapZ67UP45yqQXjn6gOHRRyi 6jJKSwIhvQsQAl8/0k0hxezMPz+SXVUEqBcfTCzUItbby/hdcv5WbOeRLl4qq/4gn9 QoncAl7v6GH2+8HDiuzp6rT5UyNDNaay7mHpwTyOUo6X9HpSZGkbGPPuyl4Po3TirE TGf3M8gREmSzA== From: "Matthieu Baerts (NGI0)" Date: Wed, 05 Jun 2024 09:15:41 +0200 Subject: [PATCH net-next 2/3] mptcp: add mptcp_space_from_win helper Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240605-upstream-net-next-20240604-misc-cleanup-v1-2-ae2e35c3ecc5@kernel.org> References: <20240605-upstream-net-next-20240604-misc-cleanup-v1-0-ae2e35c3ecc5@kernel.org> In-Reply-To: <20240605-upstream-net-next-20240604-misc-cleanup-v1-0-ae2e35c3ecc5@kernel.org> To: mptcp@lists.linux.dev, Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Matthieu Baerts (NGI0)" , Geliang Tang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2217; i=matttbe@kernel.org; h=from:subject:message-id; bh=jC86ee13yk/lZldYs4U96bt6yIokZxBGLRjbV7iwlNc=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBmYBC76jp890uaRvhriq27G9PKQKHzEOpBOGPsk k/lXHlTolyJAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZmAQuwAKCRD2t4JPQmmg c9M6EACPNPWSz/sNvtP8/rRBmLoj19WNSOqAI+N9B4bqN4vWd9bbc3+PXBNNOk9jW3AEklxx3zh 0fDIFM1EyvSlUS7uwNRoxbYMk0ghDTye4gAvlYoKTbwxjZynAokOiwRVixnQLkTq0pFCFCyykUa s9IsjT4NYAzTeT6ujuHKs+hkjc1aVZDz9+ACBcrO5S8ELTxBXkTIBr080owwQ7HgE2SEp2FxmdX NEW/2+ORi9IrXSCblK0+kRXyo8qYoe/EOIy8M7dg0Hu9jLNJnPV2gSVcWTuNswigVHa9Jv453f4 w1XAgPw/ye0vbogXq22OmaTe/tN+A7+TTY3QOPXt6MO7+SqlN9yGVFtLy8FOf4lXYEYBVnU2/N4 fxiO+qf5Ew3+G6BVB4qUznA1iuCqvgHaevjAdQf3Tl1GeL1mt7HdwaeFhUojlrNNo5lQmufuMmT j5/vaaCpfZlhZjuzhRAvI3wOpG65y9IhDTZ2Inz4VUs7vXD6mWYfliJU94AT8WHyalj33rqmsQp VrnD/wxFbJKBiLaAsjJ0arYEMpb8nyewFddsK3SJr0Nm572Aw2oMuXf3Rneu/h4TiBa2iPGD9bz U6GtZBdlV5C5NZ4M8NM9spb1vZYN1BDPWuIJ9tHrBiy/m8cZoDxGjpuuK2AIxqaiyPzDZCBPp9v 7tygP0/ghxWbjIw== X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 From: Geliang Tang As a wrapper of __tcp_space_from_win(), this patch adds a MPTCP dedicated space_from_win helper mptcp_space_from_win() in protocol.h to paired with mptcp_win_from_space(). Use it instead of __tcp_space_from_win() in both mptcp_rcv_space_adjust() and mptcp_set_rcvlowat(). Signed-off-by: Geliang Tang Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) --- net/mptcp/protocol.c | 2 +- net/mptcp/protocol.h | 5 +++++ net/mptcp/sockopt.c | 2 +- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 546c80c6702a..7ce11bee3b79 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -2040,7 +2040,7 @@ static void mptcp_rcv_space_adjust(struct mptcp_sock = *msk, int copied) do_div(grow, msk->rcvq_space.space); rcvwin +=3D (grow << 1); =20 - rcvbuf =3D min_t(u64, __tcp_space_from_win(scaling_ratio, rcvwin), + rcvbuf =3D min_t(u64, mptcp_space_from_win(sk, rcvwin), READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[2])); =20 if (rcvbuf > sk->sk_rcvbuf) { diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 7aa47e2dd52b..b11a4e50d52b 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -386,6 +386,11 @@ static inline int mptcp_win_from_space(const struct so= ck *sk, int space) return __tcp_win_from_space(mptcp_sk(sk)->scaling_ratio, space); } =20 +static inline int mptcp_space_from_win(const struct sock *sk, int win) +{ + return __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, win); +} + static inline int __mptcp_space(const struct sock *sk) { return mptcp_win_from_space(sk, READ_ONCE(sk->sk_rcvbuf) - __mptcp_rmem(s= k)); diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index f9a4fb17b5b7..2026a9a36f80 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -1579,7 +1579,7 @@ int mptcp_set_rcvlowat(struct sock *sk, int val) if (sk->sk_userlocks & SOCK_RCVBUF_LOCK) return 0; =20 - space =3D __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, val); + space =3D mptcp_space_from_win(sk, val); if (space <=3D sk->sk_rcvbuf) return 0; =20 --=20 2.43.0