From patchwork Fri Mar 20 12:16:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinpu Wang X-Patchwork-Id: 11448967 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 2B33E1864 for ; Fri, 20 Mar 2020 12:17:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0AA6D20777 for ; Fri, 20 Mar 2020 12:17:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cloud.ionos.com header.i=@cloud.ionos.com header.b="b0ZrffeP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726925AbgCTMRS (ORCPT ); Fri, 20 Mar 2020 08:17:18 -0400 Received: from mail-wr1-f53.google.com ([209.85.221.53]:38975 "EHLO mail-wr1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727135AbgCTMRR (ORCPT ); Fri, 20 Mar 2020 08:17:17 -0400 Received: by mail-wr1-f53.google.com with SMTP id h6so7156147wrs.6 for ; Fri, 20 Mar 2020 05:17:16 -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=RS3+ZAGyCkceK4PqxYuxHA/7D2Jnqq+BuWtyzFpqQuQ=; b=b0ZrffeP/GBQM/yO3Ycu1HRgv2co+2AarPFPwrJOW4AKFWq88oIkCwE3+UePNj/iMG fxc0Fd6/7+WNT+ZRpU0bOzpul7/uK2jhcXXWOYY2bPuFtAv+1p0U0BRE0b/myFrjYiEz nww+dpPbJirJ7pisBAwXdR1R9Ia7GT2lmK0gXgRp7aKIOe1vqxDiZc6+O+A6jFd66TX9 ijg62pPoyk30RdzcnotAWbEJMQFG1x00doT5DfxSZ4uSQBXpm/OwGsXlxm5Ql6O0GxDW 5omLdvTkv7DeX8fr/VI5iPxdBAr+TKfAgkii1YK7cV0RpsRZ7wy+ik9zTJgb94R+sNPl vsUg== 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=RS3+ZAGyCkceK4PqxYuxHA/7D2Jnqq+BuWtyzFpqQuQ=; b=C9kL5vhbaqHOhrow7uYsFHjk9ojV+g69veWyRIc8W94aKfYemkrEdkvYP2xq0AfIOM P93YWm3srz/0w6YcD44jXdUV4DDul+nMWlCbBKvr8VFdavyfESFCtBlexl7PwTMF3uU5 wgAoBxI7Hys2CbXMzLWY+z3ScdkswOq5p4hgrc9iROyt74adtU0QjA6JYttV9lc6quTG 6GX93l32IlewI45k0iTiC6CuUB6nElAAr7XQocIWBbU4VDvZcV8GbMS1KnxzbE8xZiJR xw26h2bRbZRnW0qR0S9Sa0xUPf1UvdeF7O93fS/TwuB/cRPY6qAawjmdXpIDW/7A+Wtw cNTw== X-Gm-Message-State: ANhLgQ2S630M4wzgkMMHmqJDJpEMP15708mT5T09hJiVCer57TP/Erq/ RMzI5H08thZdSxivsj4IqePj+OTp7UU= X-Google-Smtp-Source: ADFU+vujmXhY7Kifkx9Mk6/fpWdk4w+TKnq+gFtRLemh0mKwEB27sIl3eJrY8qzl6X7tpbBgYOek5w== X-Received: by 2002:a5d:4388:: with SMTP id i8mr10456608wrq.216.1584706635072; Fri, 20 Mar 2020 05:17:15 -0700 (PDT) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:4927:3900:64cf:432e:192d:75a2]) by smtp.gmail.com with ESMTPSA id j39sm8593662wre.11.2020.03.20.05.17.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Mar 2020 05:17:14 -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 v11 09/26] RDMA/rtrs: server: private header with server structs and functions Date: Fri, 20 Mar 2020 13:16:40 +0100 Message-Id: <20200320121657.1165-10-jinpu.wang@cloud.ionos.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200320121657.1165-1-jinpu.wang@cloud.ionos.com> References: <20200320121657.1165-1-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 rtrs-server module, mainly for accepting rtrs sessions, creating/destroying sysfs entries, accounting statistics on server side. Signed-off-by: Danil Kipnis Signed-off-by: Jack Wang --- drivers/infiniband/ulp/rtrs/rtrs-srv.h | 147 +++++++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 drivers/infiniband/ulp/rtrs/rtrs-srv.h diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.h b/drivers/infiniband/ulp/rtrs/rtrs-srv.h new file mode 100644 index 000000000000..e044cc026dcc --- /dev/null +++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.h @@ -0,0 +1,147 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * RDMA Transport Layer + * + * 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 RTRS_SRV_H +#define RTRS_SRV_H + +#include +#include +#include "rtrs-pri.h" + +/* + * enum rtrs_srv_state - Server states. + */ +enum rtrs_srv_state { + RTRS_SRV_CONNECTING, + RTRS_SRV_CONNECTED, + RTRS_SRV_CLOSING, + RTRS_SRV_CLOSED, +}; + +/* stats for Read and write operation. + * see Documentation/ABI/testing/sysfs-class-rtrs-server for details + */ +struct rtrs_srv_stats_rdma_stats { + struct { + atomic64_t cnt; + atomic64_t size_total; + } dir[2]; +}; + +struct rtrs_srv_stats { + struct rtrs_srv_stats_rdma_stats rdma_stats; +}; + +struct rtrs_srv_con { + struct rtrs_con c; + atomic_t wr_cnt; + atomic_t sq_wr_avail; + struct list_head rsp_wr_wait_list; + spinlock_t rsp_wr_wait_lock; +}; + +/* IO context in rtrs_srv, each io has one */ +struct rtrs_srv_op { + struct rtrs_srv_con *con; + u32 msg_id; + u8 dir; + struct rtrs_msg_rdma_read *rd_msg; + struct ib_rdma_wr tx_wr; + struct ib_sge tx_sg; + struct list_head wait_list; + int status; +}; + +/* + * server side memory region context, when always_invalidate=Y, we need + * queue_depth of memory regrion to invalidate each memory region. + */ +struct rtrs_srv_mr { + struct ib_mr *mr; + struct sg_table sgt; + struct ib_cqe inv_cqe; /* only for always_invalidate=true */ + u32 msg_id; /* only for always_invalidate=true */ + u32 msg_off; /* only for always_invalidate=true */ + struct rtrs_iu *iu; /* send buffer for new rkey msg */ +}; + +struct rtrs_srv_sess { + struct rtrs_sess s; + struct rtrs_srv *srv; + struct work_struct close_work; + enum rtrs_srv_state state; + spinlock_t state_lock; + int cur_cq_vector; + struct rtrs_srv_op **ops_ids; + atomic_t ids_inflight; + wait_queue_head_t ids_waitq; + struct rtrs_srv_mr *mrs; + unsigned int mrs_num; + dma_addr_t *dma_addr; + bool established; + unsigned int mem_bits; + struct kobject kobj; + struct kobject kobj_stats; + struct rtrs_srv_stats stats; +}; + +struct rtrs_srv { + struct list_head paths_list; + int paths_up; + struct mutex paths_ev_mutex; + size_t paths_num; + struct mutex paths_mutex; + uuid_t paths_uuid; + refcount_t refcount; + struct rtrs_srv_ctx *ctx; + struct list_head ctx_list; + void *priv; + size_t queue_depth; + struct page **chunks; + struct device dev; + unsigned int dev_ref; + struct kobject kobj_paths; +}; + +struct rtrs_srv_ctx { + struct rtrs_srv_ops ops; + struct rdma_cm_id *cm_id_ip; + struct rdma_cm_id *cm_id_ib; + struct mutex srv_mutex; + struct list_head srv_list; +}; + +extern struct class *rtrs_dev_class; + +void close_sess(struct rtrs_srv_sess *sess); + +static inline void rtrs_srv_update_rdma_stats(struct rtrs_srv_stats *s, + size_t size, int d) +{ + atomic64_inc(&s->rdma_stats.dir[d].cnt); + atomic64_add(size, &s->rdma_stats.dir[d].size_total); +} + +/* functions which are implemented in rtrs-srv-stats.c */ +int rtrs_srv_reset_rdma_stats(struct rtrs_srv_stats *stats, bool enable); +ssize_t rtrs_srv_stats_rdma_to_str(struct rtrs_srv_stats *stats, + char *page, size_t len); +int rtrs_srv_reset_wc_completion_stats(struct rtrs_srv_stats *stats, + bool enable); +int rtrs_srv_stats_wc_completion_to_str(struct rtrs_srv_stats *stats, char *buf, + size_t len); +int rtrs_srv_reset_all_stats(struct rtrs_srv_stats *stats, bool enable); +ssize_t rtrs_srv_reset_all_help(struct rtrs_srv_stats *stats, + char *page, size_t len); + +/* functions which are implemented in rtrs-srv-sysfs.c */ +int rtrs_srv_create_sess_files(struct rtrs_srv_sess *sess); +void rtrs_srv_destroy_sess_files(struct rtrs_srv_sess *sess); + +#endif /* RTRS_SRV_H */