From patchwork Fri Jan 24 20:47:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinpu Wang X-Patchwork-Id: 11350977 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 5BABE139A for ; Fri, 24 Jan 2020 20:48:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39D702081E for ; Fri, 24 Jan 2020 20:48:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Xln2jm/o" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388320AbgAXUsL (ORCPT ); Fri, 24 Jan 2020 15:48:11 -0500 Received: from mail-ed1-f67.google.com ([209.85.208.67]:35493 "EHLO mail-ed1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388286AbgAXUsK (ORCPT ); Fri, 24 Jan 2020 15:48:10 -0500 Received: by mail-ed1-f67.google.com with SMTP id f8so3978959edv.2; Fri, 24 Jan 2020 12:48:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=J8fBNjSPDt0FwN6DkrYYEkcMXSlBqigTlbjCKjfNPuY=; b=Xln2jm/owCxQKx39jZXdfsGj09vnMG8uJU0aQNDKXrPegXcdl62hmN9N/GqyIBV8eQ EZAAULXCJ4zxNCDfpqzNqyfbG3Mw3z4m2fusTu1et45TUfXGgUyE79UOkTyJOd+1nmGW ILmwZQCXASX4zpyj59hCM+HmRQ/xPP2A68VzSluHZH5EkmgRiQuF/kBWSTsBao4GqLBw Pn8c4gc3VDGsyeKEpz/zfQHCvFLJsEzEtlbA83/DmZV8xEjqKUgYk12v892kwh0IkAn0 A6/qs0WX2szFQ/SrxHJRjC81cgAxHnC2BIyaYtdowG2xdJDgV/e2gZM8siEVUsnfde4y 0mdw== 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=J8fBNjSPDt0FwN6DkrYYEkcMXSlBqigTlbjCKjfNPuY=; b=RG0FadTjnzss21AX+ctVuIqqAkvMtRcVE1sSwsSIU6G3ZVbdNP5czWQUbtQsJm8woJ 4gEPAm3aUYYH5DbzG5M3+cdHlLzGScNDKyK9qGX2Gkoetsdz48xEL3v+DqrtmAODlYyP TwJGU5UoQlvdCgkJ6oIzMVnveCRqZr2rzJR2yrDoH1ydtrju5XK+H2Yc19RP3VqvVlzm LqtijlY4cmazG3Wj+Wq7NLvcjjAxTHWM8W0BLEDuh/dwJDPHkSjApIVcTpoALxM+ETXD TFE/yF27bh6DglMN8lI5DZMVL62dQ/lQReG1EID6qEi/nwSE5ztyuFcPvnk8TwlA5zzP h4oA== X-Gm-Message-State: APjAAAUbZo4pf5MIDWGYqC4Sp3oynxkTaMj8GXlv9dTmDslpejyMJbu+ AbOD6Z52hbwMr6wo2TmfgCFqBWhN X-Google-Smtp-Source: APXvYqxMOJVbKjYTmFnUVdmRWmbGCBXMHOvBtwYcqCSudtBX6KUiKyCnzYVRly0AsQueR8r0tUD+LA== X-Received: by 2002:aa7:cf81:: with SMTP id z1mr4432250edx.234.1579898888216; Fri, 24 Jan 2020 12:48:08 -0800 (PST) Received: from jwang-Latitude-5491.fkb.profitbricks.net ([2001:16b8:4965:9a00:596f:3f84:9af0:9e48]) by smtp.gmail.com with ESMTPSA id b17sm53830edt.5.2020.01.24.12.48.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jan 2020 12:48:07 -0800 (PST) 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 Subject: [PATCH v8 09/25] RDMA/rtrs: server: private header with server structs and functions Date: Fri, 24 Jan 2020 21:47:37 +0100 Message-Id: <20200124204753.13154-10-jinpuwang@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200124204753.13154-1-jinpuwang@gmail.com> References: <20200124204753.13154-1-jinpuwang@gmail.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Jack Wang 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 | 138 +++++++++++++++++++++++++ 1 file changed, 138 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..73cc19821e74 --- /dev/null +++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.h @@ -0,0 +1,138 @@ +/* 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; +}; + +/* 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; +}; + +/* + * 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 { + rdma_ev_fn *rdma_ev; + link_ev_fn *link_ev; + 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); + +/* functions which are implemented in rtrs-srv-stats.c */ +void rtrs_srv_update_rdma_stats(struct rtrs_srv_stats *s, size_t size, int d); + +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 */