From patchwork Tue Nov 7 08:54:56 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 835181 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yWNdk3m7Qz9t5x for ; Tue, 7 Nov 2017 19:59:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754234AbdKGI5d (ORCPT ); Tue, 7 Nov 2017 03:57:33 -0500 Received: from a2nlsmtp01-05.prod.iad2.secureserver.net ([198.71.225.49]:34030 "EHLO a2nlsmtp01-05.prod.iad2.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753805AbdKGI5O (ORCPT ); Tue, 7 Nov 2017 03:57:14 -0500 Received: from linuxonhyperv.com ([107.180.71.197]) by : HOSTING RELAY : with SMTP id BzfpeuERl3w7hBzfpe9z0r; Tue, 07 Nov 2017 01:56:12 -0700 x-originating-ip: 107.180.71.197 Received: from longli by linuxonhyperv.com with local (Exim 4.89) (envelope-from ) id 1eBzfp-0003Kd-Pl; Tue, 07 Nov 2017 01:55:57 -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 , Stephen Hemminger Cc: Long Li Subject: [Patch v7 04/22] CIFS: SMBD: Add SMB Direct protocol initial values and constants Date: Tue, 7 Nov 2017 01:54:56 -0700 Message-Id: <20171107085514.12693-5-longli@exchange.microsoft.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20171107085514.12693-1-longli@exchange.microsoft.com> References: <20171107085514.12693-1-longli@exchange.microsoft.com> X-CMAE-Envelope: MS4wfFCT/mPgTye3BW3ktJrf+l/H9rdEE7VYIYh656sFyg9TUlIRFwgEPBWg1nnfHPjcvG7gVGjYjFBrLIH+ujhpy92cP49fb0ZB0+ir81WEwOXhyv+wIxEE 5r2C9ChyHgUYjrHq/n6OA/gXJ5w36kHsPuMW2+kncGGOujOSEaw6i7VcpjMce6lY2aLK3BZ6/Fyrq8DAj85lJfMnmYYtXpjGjI46mAkynMp8ml8r08IVn3uk 9Jn5s304AYO7mj1lsSUOQIt7pW+CLKewtSK2lU1SI2D3yxxHZv6XZciYhCoA0GtoNrBIdOJUxd1GSqVMnMJRosEAjj3W0TrHD2mtfLaFZknw6374fmAEiokC V5inwELC9vDwzu+kZhFHGsu7cIf8vvV4oa6lVVClneF738Bq5vEgdWnNpovt0w9u31Ps5u/DaOaconTNx3hbEg41MaWDtdfeqCukZAzlZsdnegF8Qsb86xHA Y9IORibqB8x7/nv0bIV2ioBmUmf03BFVBuPp/g== Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org From: Long Li To prepare for protocol implementation, add constants and user-configurable values for the SMB Direct protocol. Signed-off-by: Long Li Acked-by: Ronnie Sahlberg Signed-off-by: Long Li --- fs/cifs/smbdirect.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/cifs/smbdirect.h | 21 +++++++++++++++ 2 files changed, 98 insertions(+) create mode 100644 fs/cifs/smbdirect.c create mode 100644 fs/cifs/smbdirect.h diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c new file mode 100644 index 0000000..d3c16f8 --- /dev/null +++ b/fs/cifs/smbdirect.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2017, Microsoft Corporation. + * + * Author(s): Long Li + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + */ +#include "smbdirect.h" + +/* SMBD version number */ +#define SMBD_V1 0x0100 + +/* Port numbers for SMBD transport */ +#define SMB_PORT 445 +#define SMBD_PORT 5445 + +/* Address lookup and resolve timeout in ms */ +#define RDMA_RESOLVE_TIMEOUT 5000 + +/* SMBD negotiation timeout in seconds */ +#define SMBD_NEGOTIATE_TIMEOUT 120 + +/* SMBD minimum receive size and fragmented sized defined in [MS-SMBD] */ +#define SMBD_MIN_RECEIVE_SIZE 128 +#define SMBD_MIN_FRAGMENTED_SIZE 131072 + +/* + * Default maximum number of RDMA read/write outstanding on this connection + * This value is possibly decreased during QP creation on hardware limit + */ +#define SMBD_CM_RESPONDER_RESOURCES 32 + +/* Maximum number of retries on data transfer operations */ +#define SMBD_CM_RETRY 6 +/* No need to retry on Receiver Not Ready since SMBD manages credits */ +#define SMBD_CM_RNR_RETRY 0 + +/* + * User configurable initial values per SMBD transport connection + * as defined in [MS-SMBD] 3.1.1.1 + * Those may change after a SMBD negotiation + */ +/* The local peer's maximum number of credits to grant to the peer */ +int smbd_receive_credit_max = 255; + +/* The remote peer's credit request of local peer */ +int smbd_send_credit_target = 255; + +/* The maximum single message size can be sent to remote peer */ +int smbd_max_send_size = 1364; + +/* The maximum fragmented upper-layer payload receive size supported */ +int smbd_max_fragmented_recv_size = 1024 * 1024; + +/* The maximum single-message size which can be received */ +int smbd_max_receive_size = 8192; + +/* The timeout to initiate send of a keepalive message on idle */ +int smbd_keep_alive_interval = 120; + +/* + * User configurable initial values for RDMA transport + * The actual values used may be lower and are limited to hardware capabilities + */ +/* Default maximum number of SGEs in a RDMA write/read */ +int smbd_max_frmr_depth = 2048; + +/* If payload is less than this byte, use RDMA send/recv not read/write */ +int rdma_readwrite_threshold = 4096; diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h new file mode 100644 index 0000000..c55f28b --- /dev/null +++ b/fs/cifs/smbdirect.h @@ -0,0 +1,21 @@ +/* + * Copyright (C) 2017, Microsoft Corporation. + * + * Author(s): Long Li + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + */ +#ifndef _SMBDIRECT_H +#define _SMBDIRECT_H + +/* Default maximum number of SGEs in a RDMA send/recv */ +#define SMBDIRECT_MAX_SGE 16 +#endif