From patchwork Wed May 13 06:26:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11544783 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05E6817EA for ; Wed, 13 May 2020 06:28:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0D8E206B7 for ; Wed, 13 May 2020 06:28:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="K/jg5G3e" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730575AbgEMG2n (ORCPT ); Wed, 13 May 2020 02:28:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730530AbgEMG2l (ORCPT ); Wed, 13 May 2020 02:28:41 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99D66C061A0C; Tue, 12 May 2020 23:28:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=lMcK9CNUbL+jju+sk+Za5xMNx7m0mtw5FFKEm8NMVMg=; b=K/jg5G3eSawPK0UgXqlgiKpniO iQGminHfpsZ0iAQm5G2xvHE6Ts2uFMeueVjStcfcc6mPDGVam7oYNQ5fEdQjya7SUoWTVv+vq+1Av 5dyDRT7peBilThhJ541YhcelQiUZw3QUdNPVhiBg9Sm6DJyIbitzrjQ5GQR4ji0cN/BRm4+KMm0ve NaTz4eZNC4YIHuybjoe0Wd4aYxLDNjeqB89uRkKqPLfZmsONQh4VhN2pkjvJbvCcsn+/MGYeqB1pO Ud1BoyUghJ52iAtNvvkZ/HL/8DEkGLSApB9bLnUv/vRUHnGY+E7iDuFilz7K3AqjwPEnrts5UZOx9 YsmiuAXQ==; Received: from [2001:4bb8:180:9d3f:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYkri-0004T2-Vl; Wed, 13 May 2020 06:27:39 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Cc: Eric Dumazet , Alexey Kuznetsov , Hideaki YOSHIFUJI , Vlad Yasevich , Neil Horman , Marcelo Ricardo Leitner , Jon Maloy , Ying Xue , drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, netdev@vger.kernel.org, linux-sctp@vger.kernel.org, ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com, linux-nfs@vger.kernel.org Subject: [PATCH 16/33] tcp: add tcp_sock_set_keepintvl Date: Wed, 13 May 2020 08:26:31 +0200 Message-Id: <20200513062649.2100053-17-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513062649.2100053-1-hch@lst.de> References: <20200513062649.2100053-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Add a helper to directly set the TCP_KEEPINTVL sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- include/linux/tcp.h | 1 + net/ipv4/tcp.c | 12 ++++++++++++ net/rds/tcp_listen.c | 4 +--- net/sunrpc/xprtsock.c | 3 +-- 4 files changed, 15 insertions(+), 5 deletions(-) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 4d3a3e959e45b..dad18ca361c01 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -500,5 +500,6 @@ void tcp_sock_set_quickack(struct sock *sk, int val); int tcp_sock_set_syncnt(struct sock *sk, int val); void tcp_sock_set_user_timeout(struct sock *sk, u32 val); int tcp_sock_set_keepidle(struct sock *sk, int val); +int tcp_sock_set_keepintvl(struct sock *sk, int val); #endif /* _LINUX_TCP_H */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 22eb9159c7d05..b714f2b2fa54e 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2923,6 +2923,18 @@ int tcp_sock_set_keepidle(struct sock *sk, int val) } EXPORT_SYMBOL(tcp_sock_set_keepidle); +int tcp_sock_set_keepintvl(struct sock *sk, int val) +{ + if (val < 1 || val > MAX_TCP_KEEPINTVL) + return -EINVAL; + + lock_sock(sk); + tcp_sk(sk)->keepalive_intvl = val * HZ; + release_sock(sk); + return 0; +} +EXPORT_SYMBOL(tcp_sock_set_keepintvl); + /* * Socket option code for TCP. */ diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index 8c76969d8c878..a5db2f8bb7339 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -53,12 +53,10 @@ int rds_tcp_keepalive(struct socket *sock) goto bail; tcp_sock_set_keepidle(sock->sk, keepidle); - /* KEEPINTVL is the interval between successive probes. We follow * the model in xs_tcp_finish_connecting() and re-use keepidle. */ - ret = kernel_setsockopt(sock, IPPROTO_TCP, TCP_KEEPINTVL, - (char *)&keepidle, sizeof(keepidle)); + tcp_sock_set_keepintvl(sock->sk, keepidle); bail: return ret; } diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index ea79446789c69..e20de4a52edb7 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2108,8 +2108,7 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt, /* TCP Keepalive options */ sock_set_keepalive(sock->sk, 1); tcp_sock_set_keepidle(sock->sk, keepidle); - kernel_setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, - (char *)&keepidle, sizeof(keepidle)); + tcp_sock_set_keepintvl(sock->sk, keepidle); kernel_setsockopt(sock, SOL_TCP, TCP_KEEPCNT, (char *)&keepcnt, sizeof(keepcnt));