From patchwork Wed Mar 11 16:12:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinpu Wang X-Patchwork-Id: 11432145 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 B481414B7 for ; Wed, 11 Mar 2020 16:13:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7D6A02072F for ; Wed, 11 Mar 2020 16:13:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cloud.ionos.com header.i=@cloud.ionos.com header.b="XUSCIc2v" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730235AbgCKQNQ (ORCPT ); Wed, 11 Mar 2020 12:13:16 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:34146 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730198AbgCKQNP (ORCPT ); Wed, 11 Mar 2020 12:13:15 -0400 Received: by mail-wm1-f67.google.com with SMTP id x3so3516058wmj.1 for ; Wed, 11 Mar 2020 09:13:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.ionos.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=bFZMoThFPsHK0B7YajbqOi+az87fjoCNRv6x74L1yQw=; b=XUSCIc2vg81QArsPrFjGIATBT/7XBhisM/O9c03wLofDDzA+YLXoOsBuHxtv2WtGEk DMVP2+KMWoBiS+euMk70M7CMO59sSBEn8PjYqOccYNK09SCOCv/9oLDe4/yv8qn/BQMV 9VzPFBx8NgLs0Mnte4/w0Q53hMTG4zPs25SjAzvsSz2ZgKw/YGKUcZDX4DVfzd19yAhQ E/lbGuky9lAMZyJMDQuTxItMqYnYsItcZIWLE/1IXT3osLQ04+ZrUk04I8zYB1Jj6oQ0 oDj/4P8Ts4Ff/w/d32sUHRq2hnAy0UheWpEhdO3uNt1Z8tgFAW1HKtOU/nA7KY84g4w3 5qZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=bFZMoThFPsHK0B7YajbqOi+az87fjoCNRv6x74L1yQw=; b=WYXgxvLiJkrmsxFZGj8WKv/ebEuTFdsrUBpNkn7xg2MF6qQmhpN+LrAt+/3NvzoMzg uVXkuJcRP5V1d/F8ojSeCIFtV0PrJHayDjL4XRFmZtCj0ZvQLwM8aTrwWwNhBQbpHDCl rEIBo5vXk2N1oZgJw6KpP6k0qQ0BqpRacFQQznN1JQJPtvpT3LU8sJc7JK8+6LsQnrlX qYVIIhcLNqET2UbntoYTnDEpJ20TiNdxDAWgk6PpGjvUO5N1FilN9/CXF3Uyaun0DTln wnAS9IVJVe0f80CQW83TvhGsUSjLLWBOVwOpDx7Kg3oPly3I/zyCnoqTOvLW9KVJ8j1+ EshA== X-Gm-Message-State: ANhLgQ3WchpHbT5ev9qFuP6QMCAZIttyPtTMBz2LVHkldOo+2worfvVX 6xgzlBAg/N+V5vDhRxE1qMc7t52SJFk= X-Google-Smtp-Source: ADFU+vsnDCIDkp6D7HZNDKoicjF+w0U2+A0uGJBrO7trouFugz068oqqG6RoBeKkSpP+Gqbe1c+3FQ== X-Received: by 2002:a7b:cc14:: with SMTP id f20mr4189636wmh.132.1583943193379; Wed, 11 Mar 2020 09:13:13 -0700 (PDT) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:4963:f600:4938:8f65:9543:5ec9]) by smtp.gmail.com with ESMTPSA id v13sm2739332wru.47.2020.03.11.09.13.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Mar 2020 09:13:12 -0700 (PDT) From: Jack Wang To: linux-block@vger.kernel.org, linux-rdma@vger.kernel.org Cc: axboe@kernel.dk, hch@infradead.org, sagi@grimberg.me, bvanassche@acm.org, leon@kernel.org, dledford@redhat.com, jgg@ziepe.ca, danil.kipnis@cloud.ionos.com, jinpu.wang@cloud.ionos.com, rpenyaev@suse.de, pankaj.gupta@cloud.ionos.com Subject: [PATCH v10 20/26] block/rnbd: server: private header with server structs and functions Date: Wed, 11 Mar 2020 17:12:34 +0100 Message-Id: <20200311161240.30190-21-jinpu.wang@cloud.ionos.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200311161240.30190-1-jinpu.wang@cloud.ionos.com> References: <20200311161240.30190-1-jinpu.wang@cloud.ionos.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org This header describes main structs and functions used by rnbd-server module, namely structs for managing sessions from different clients and mapped (opened) devices. Signed-off-by: Danil Kipnis Signed-off-by: Jack Wang Reviewed-by: Bart Van Assche --- drivers/block/rnbd/rnbd-srv.h | 77 +++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 drivers/block/rnbd/rnbd-srv.h diff --git a/drivers/block/rnbd/rnbd-srv.h b/drivers/block/rnbd/rnbd-srv.h new file mode 100644 index 000000000000..27cbcb86bc38 --- /dev/null +++ b/drivers/block/rnbd/rnbd-srv.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * RDMA Network Block Driver + * + * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved. + * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved. + * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved. + */ +#ifndef RNBD_SRV_H +#define RNBD_SRV_H + +#include +#include +#include + +#include "rtrs.h" +#include "rnbd-proto.h" +#include "rnbd-log.h" + +struct rnbd_srv_session { + /* Entry inside global sess_list */ + struct list_head list; + struct rtrs_srv *rtrs; + char sessname[NAME_MAX]; + + rwlock_t index_lock ____cacheline_aligned; + struct idr index_idr; + /* List of struct rnbd_srv_sess_dev */ + struct list_head sess_dev_list; + struct mutex lock; + u8 ver; +}; + +struct rnbd_srv_dev { + /* Entry inside global dev_list */ + struct list_head list; + struct kobject dev_kobj; + struct kobject dev_sessions_kobj; + struct kref kref; + char id[NAME_MAX]; + /* List of rnbd_srv_sess_dev structs */ + struct list_head sess_dev_list; + struct mutex lock; + int open_write_cnt; +}; + +/* Structure which binds N devices and N sessions */ +struct rnbd_srv_sess_dev { + /* Entry inside rnbd_srv_dev struct */ + struct list_head dev_list; + /* Entry inside rnbd_srv_session struct */ + struct list_head sess_list; + struct rnbd_dev *rnbd_dev; + struct rnbd_srv_session *sess; + struct rnbd_srv_dev *dev; + struct kobject kobj; + struct completion *sysfs_release_compl; + u32 device_id; + fmode_t open_flags; + struct kref kref; + struct completion *destroy_comp; + char pathname[NAME_MAX]; + enum rnbd_access_mode access_mode; +}; + +/* rnbd-srv-sysfs.c */ + +int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev, + struct block_device *bdev, + const char *dir_name); +void rnbd_srv_destroy_dev_sysfs(struct rnbd_srv_dev *dev); +int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev); +void rnbd_srv_destroy_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev); +int rnbd_srv_create_sysfs_files(void); +void rnbd_srv_destroy_sysfs_files(void); + +#endif /* RNBD_SRV_H */