From patchwork Wed Jul 6 12:55:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9216335 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 50B7360752 for ; Wed, 6 Jul 2016 12:56:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41989288A4 for ; Wed, 6 Jul 2016 12:56:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 36678288A8; Wed, 6 Jul 2016 12:56:09 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham 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 CE220288A4 for ; Wed, 6 Jul 2016 12:56:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753703AbcGFM4I (ORCPT ); Wed, 6 Jul 2016 08:56:08 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:36317 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751782AbcGFM4H (ORCPT ); Wed, 6 Jul 2016 08:56:07 -0400 Received: from i60-34-157-115.s41.a006.ap.plala.or.jp ([60.34.157.115] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.85_2 #1 (Red Hat Linux)) id 1bKmN3-0000De-RL; Wed, 06 Jul 2016 12:56:06 +0000 From: Christoph Hellwig To: axboe@kernel.dk, keith.busch@intel.com Cc: linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org, Sagi Grimberg , Jay Freyensee , Ming Lin Subject: [PATCH 3/5] nvme-rdma.h: Add includes for nvme rdma_cm negotiation Date: Wed, 6 Jul 2016 21:55:50 +0900 Message-Id: <1467809752-31320-4-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1467809752-31320-1-git-send-email-hch@lst.de> References: <1467809752-31320-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sagi Grimberg NVMe over Fabrics RDMA transport defines a connection establishment protocol over the RDMA connection manager. This header will be used by both the host and target drivers to negotiate the connection establishment parameters. Signed-off-by: Jay Freyensee Signed-off-by: Ming Lin Signed-off-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Reviewed-by: Steve Wise --- include/linux/nvme-rdma.h | 71 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 include/linux/nvme-rdma.h diff --git a/include/linux/nvme-rdma.h b/include/linux/nvme-rdma.h new file mode 100644 index 0000000..bf240a3 --- /dev/null +++ b/include/linux/nvme-rdma.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2015 Mellanox Technologies. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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 _LINUX_NVME_RDMA_H +#define _LINUX_NVME_RDMA_H + +enum nvme_rdma_cm_fmt { + NVME_RDMA_CM_FMT_1_0 = 0x0, +}; + +enum nvme_rdma_cm_status { + NVME_RDMA_CM_INVALID_LEN = 0x01, + NVME_RDMA_CM_INVALID_RECFMT = 0x02, + NVME_RDMA_CM_INVALID_QID = 0x03, + NVME_RDMA_CM_INVALID_HSQSIZE = 0x04, + NVME_RDMA_CM_INVALID_HRQSIZE = 0x05, + NVME_RDMA_CM_NO_RSC = 0x06, + NVME_RDMA_CM_INVALID_IRD = 0x07, + NVME_RDMA_CM_INVALID_ORD = 0x08, +}; + +/** + * struct nvme_rdma_cm_req - rdma connect request + * + * @recfmt: format of the RDMA Private Data + * @qid: queue Identifier for the Admin or I/O Queue + * @hrqsize: host receive queue size to be created + * @hsqsize: host send queue size to be created + */ +struct nvme_rdma_cm_req { + __le16 recfmt; + __le16 qid; + __le16 hrqsize; + __le16 hsqsize; + u8 rsvd[24]; +}; + +/** + * struct nvme_rdma_cm_rep - rdma connect reply + * + * @recfmt: format of the RDMA Private Data + * @crqsize: controller receive queue size + */ +struct nvme_rdma_cm_rep { + __le16 recfmt; + __le16 crqsize; + u8 rsvd[28]; +}; + +/** + * struct nvme_rdma_cm_rej - rdma connect reject + * + * @recfmt: format of the RDMA Private Data + * @fsts: error status for the associated connect request + */ +struct nvme_rdma_cm_rej { + __le16 recfmt; + __le16 sts; +}; + +#endif /* _LINUX_NVME_RDMA_H */