From patchwork Wed May 13 06:26:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11545073 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 8B49414B4 for ; Wed, 13 May 2020 06:32:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6486F206A5 for ; Wed, 13 May 2020 06:32:14 +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="tazCl9eR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729887AbgEMG2O (ORCPT ); Wed, 13 May 2020 02:28:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgEMG2N (ORCPT ); Wed, 13 May 2020 02:28:13 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A25FC061A0E; Tue, 12 May 2020 23:28:13 -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=i8FI3LSbksg0B4cndOfJsa++XicNxeW/zkgZeE5mN7U=; b=tazCl9eRS7nQKB3iKz2RuE9e3B 0vTTHfaiCkWuiWwWQNpo2FWApgyD06j2vYC1/PdkIPZfopMhw4SLCENpJ1qNNKFVnYQbAy4MZ6hRs OL6GFsojnSymFuA7InCzVIz5tu9AfNbe/5s3xWZ5LJWQDqV4OHsJ+HK23bw9UFOA/lcso8Bwes9re M5tQHPrIlkn/dDuMN/PS8kLtPntQ1CpGHHKr20qikqYeg+i8mtzdpnmbBIXjrdqegfV6CfWTA9lJx ysjhmhFjeuOGo2MM/53cAH82vWYN51+K1TRwHExSq3VVqeIwEmDHNL4zPkPpEwTw6XsNR1DbmWBxi Z/IUEJVA==; 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 1jYkr8-0003s6-TG; Wed, 13 May 2020 06:27:03 +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 04/33] net: add sock_set_sndtimeo Date: Wed, 13 May 2020 08:26:19 +0200 Message-Id: <20200513062649.2100053-5-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: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org Add a helper to directly set the SO_SNDTIMEO_NEW sockopt from kernel space without going through a fake uaccess. The interface is simplified to only pass the seconds value, as that is the only thing needed at the moment. Signed-off-by: Christoph Hellwig --- fs/dlm/lowcomms.c | 8 ++------ include/net/sock.h | 1 + net/core/sock.c | 11 +++++++++++ 3 files changed, 14 insertions(+), 6 deletions(-) diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 48e7ba796c6fb..0c0a6413fdfcc 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1035,7 +1035,6 @@ static void sctp_connect_to_sock(struct connection *con) int result; int addr_len; struct socket *sock; - struct __kernel_sock_timeval tv = { .tv_sec = 5, .tv_usec = 0 }; if (con->nodeid == 0) { log_print("attempt to connect sock 0 foiled"); @@ -1087,13 +1086,10 @@ static void sctp_connect_to_sock(struct connection *con) * since O_NONBLOCK argument in connect() function does not work here, * then, we should restore the default value of this attribute. */ - kernel_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO_NEW, (char *)&tv, - sizeof(tv)); + sock_set_sndtimeo(sock->sk, 5); result = sock->ops->connect(sock, (struct sockaddr *)&daddr, addr_len, 0); - memset(&tv, 0, sizeof(tv)); - kernel_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO_NEW, (char *)&tv, - sizeof(tv)); + sock_set_sndtimeo(sock->sk, 0); if (result == -EINPROGRESS) result = 0; diff --git a/include/net/sock.h b/include/net/sock.h index cce11782dc295..809596ffd32d2 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2690,5 +2690,6 @@ void sock_def_readable(struct sock *sk); void sock_set_reuseaddr(struct sock *sk, unsigned char reuse); void sock_set_linger(struct sock *sk, bool onoff, unsigned int linger); void sock_set_priority(struct sock *sk, u32 priority); +void sock_set_sndtimeo(struct sock *sk, unsigned int secs); #endif /* _SOCK_H */ diff --git a/net/core/sock.c b/net/core/sock.c index e9f1e2247b004..76527681e50b9 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -752,6 +752,17 @@ void sock_set_priority(struct sock *sk, u32 priority) } EXPORT_SYMBOL(sock_set_priority); +void sock_set_sndtimeo(struct sock *sk, unsigned int secs) +{ + lock_sock(sk); + if (secs && secs < MAX_SCHEDULE_TIMEOUT / HZ - 1) + sk->sk_sndtimeo = secs * HZ; + else + sk->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT; + release_sock(sk); +} +EXPORT_SYMBOL(sock_set_sndtimeo); + /* * This is meant for all protocols to use and covers goings on * at the socket level. Everything here is generic.