From patchwork Wed May 13 06:26:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11545007 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 7A5EE139A for ; Wed, 13 May 2020 06:31:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62A96206A5 for ; Wed, 13 May 2020 06:31:19 +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="cyzDx1uo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729602AbgEMGbM (ORCPT ); Wed, 13 May 2020 02:31:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730396AbgEMG2f (ORCPT ); Wed, 13 May 2020 02:28:35 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7B6DC061A0C; Tue, 12 May 2020 23:28:34 -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=Q3f8maTF2WhcJdVNH6rzm87GRT50d4BxACqMxTxJ4BY=; b=cyzDx1uoh8IiQfgqAVcSotVmh6 uYNpmIDX8eRx1zTp13fHCHimwYLgcArJiLCZgmhnVK9WDg8dXaW6SyzTThxwpKcA3K6fQDAdzMImx +3MykN3jaMNTPmD6tdS0//BJDxKVi8Hgtd0lXVPm5HMudbnLuBSnnLKeCf/gO9CHQiMif+stgJjDK p1HmNw+EHVn+8Enoh5JEafDugHKOb0+M4kJ/PfQMggv/wfXKkunOR7WL3g2z/Tfo8oIQ61TYVkjA5 ouDak8sJvnYkyCZ8ATf7S7Dq7i/0BFEd0q/gcxvMbFNvKljzc+GOqukpMF9pp/HS5RB/fDtmU740T 87t0LOEA==; 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 1jYkrO-0004A8-Gx; Wed, 13 May 2020 06:27:19 +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 09/33] net: add sock_set_reuseport Date: Wed, 13 May 2020 08:26:24 +0200 Message-Id: <20200513062649.2100053-10-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-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Add a helper to directly set the SO_REUSEPORT sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- include/net/sock.h | 1 + net/core/sock.c | 8 ++++++++ net/sunrpc/xprtsock.c | 17 +---------------- 3 files changed, 10 insertions(+), 16 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index e1ed40ff01312..6b8e06947b243 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2688,6 +2688,7 @@ static inline bool sk_dev_equal_l3scope(struct sock *sk, int dif) void sock_def_readable(struct sock *sk); void sock_set_reuseaddr(struct sock *sk, unsigned char reuse); +void sock_set_reuseport(struct sock *sk, bool reuseport); 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); diff --git a/net/core/sock.c b/net/core/sock.c index 6af01b757cf24..7f0baf1ccde17 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -729,6 +729,14 @@ void sock_set_reuseaddr(struct sock *sk, unsigned char reuse) } EXPORT_SYMBOL(sock_set_reuseaddr); +void sock_set_reuseport(struct sock *sk, bool reuseport) +{ + lock_sock(sk); + sk->sk_reuseport = reuseport; + release_sock(sk); +} +EXPORT_SYMBOL(sock_set_reuseport); + static void __sock_set_linger(struct sock *sk, bool onoff, unsigned int linger) { if (!onoff) { diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index bb61d3758be2b..3dc2d52371a0e 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1594,21 +1594,6 @@ static int xs_get_random_port(void) return rand + min; } -/** - * xs_set_reuseaddr_port - set the socket's port and address reuse options - * @sock: socket - * - * Note that this function has to be called on all sockets that share the - * same port, and it must be called before binding. - */ -static void xs_sock_set_reuseport(struct socket *sock) -{ - int opt = 1; - - kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, - (char *)&opt, sizeof(opt)); -} - static unsigned short xs_sock_getport(struct socket *sock) { struct sockaddr_storage buf; @@ -1801,7 +1786,7 @@ static struct socket *xs_create_sock(struct rpc_xprt *xprt, xs_reclassify_socket(family, sock); if (reuseport) - xs_sock_set_reuseport(sock); + sock_set_reuseport(sock->sk, true); err = xs_bind(transport, sock); if (err) {