From patchwork Sun Aug 20 19:04:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 9911387 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 38D7F603FA for ; Sun, 20 Aug 2017 19:09:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2957828747 for ; Sun, 20 Aug 2017 19:09:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1E5EE2872A; Sun, 20 Aug 2017 19:09:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D1CED28710 for ; Sun, 20 Aug 2017 19:09:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753587AbdHTTGg (ORCPT ); Sun, 20 Aug 2017 15:06:36 -0400 Received: from a2nlsmtp01-03.prod.iad2.secureserver.net ([198.71.225.37]:44452 "EHLO a2nlsmtp01-03.prod.iad2.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753583AbdHTTGf (ORCPT ); Sun, 20 Aug 2017 15:06:35 -0400 Received: from linuxonhyperv.com ([107.180.71.197]) by : HOSTING RELAY : with SMTP id jVXSdL2uJyEu9jVXSdOWPa; Sun, 20 Aug 2017 12:05:34 -0700 x-originating-ip: 107.180.71.197 Received: from longli by linuxonhyperv.com with local (Exim 4.89) (envelope-from ) id 1djVXS-0000oV-I0; Sun, 20 Aug 2017 12:05:34 -0700 From: Long Li To: Steve French , linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Christoph Hellwig , Tom Talpey , Matthew Wilcox Cc: Long Li Subject: [Patch v2 08/19] CIFS: SMBD: Set SMBDirect maximum read or write size for I/O Date: Sun, 20 Aug 2017 12:04:32 -0700 Message-Id: <1503255883-3041-9-git-send-email-longli@exchange.microsoft.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1503255883-3041-1-git-send-email-longli@exchange.microsoft.com> References: <1503255883-3041-1-git-send-email-longli@exchange.microsoft.com> X-CMAE-Envelope: MS4wfC3T4rjvNkinc410qQt5eLWh7iBbdf+dBgtwVWGRMY+4loDvVUNULeIAGHffopOlsFYS6Es4wUc0WBi7aMIpuoWGvweMhHOOtj0s4zXl22j8fNWcOQwb Ut38BMGAyCZEe6E7RXbCWGDF+ifrakcpo8yZzJB6mWP18Aio1LCz15LT1a10ccWO7UVu3aJ6TjrPN5j3XF+/opzrjtcynKkgVyc0LlQqWo1SPGRihiMCqqG2 YZTY6km2RL7UMjsgxG7dczcICZ7vdPpnLE5I3NbO2dE3qN03ysv+4bgwH712EGpQCWJVkSBK32Yw16aOXQpgvWrbJhgpQJkW5fHRNKzsxDVPqbAvyUJnVOra dGS+Gt5AqQWztGzekkwk+d+3v1o6R9QJgLZh0lPWjaVCvYeCs4WdNTWu6JNzGo2efvGBUxzEF2biy54PJP489T3zTF3Pja5pvF0ZKfzP5Nv1Ve2E3kpn8vT0 TQ9vAenjz0vT+ehl Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Long Li When connecting over SMBDirect, the transport negotiates its maximum I/O sizes with the server and determines how to choose to do RDMA send/recv vs read/write. Expose these maximum I/O sizes to upper layer so we will get the correct sized payloads. Signed-off-by: Long Li --- fs/cifs/smb2ops.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 06494e1..e67f5f0 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -32,6 +32,7 @@ #include "smb2status.h" #include "smb2glob.h" #include "cifs_ioctl.h" +#include "smbdirect.h" static int change_conf(struct TCP_Server_Info *server) @@ -249,7 +250,11 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified wsize, or default */ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE; - wsize = min_t(unsigned int, wsize, server->max_write); + if (server->rdma) + wsize = min_t(unsigned int, + wsize, server->smbd_conn->max_readwrite_size); + else + wsize = min_t(unsigned int, wsize, server->max_write); if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); @@ -265,7 +270,11 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified rsize, or default */ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE; - rsize = min_t(unsigned int, rsize, server->max_read); + if (server->rdma) + rsize = min_t(unsigned int, + rsize, server->smbd_conn->max_readwrite_size); + else + rsize = min_t(unsigned int, rsize, server->max_read); if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);