From patchwork Mon Dec 30 10:29:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinpu Wang X-Patchwork-Id: 11312837 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 556D113A4 for ; Mon, 30 Dec 2019 10:29:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 283DA207E0 for ; Mon, 30 Dec 2019 10:29:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rsGj3ARP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727406AbfL3K3x (ORCPT ); Mon, 30 Dec 2019 05:29:53 -0500 Received: from mail-ed1-f68.google.com ([209.85.208.68]:39861 "EHLO mail-ed1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727404AbfL3K3w (ORCPT ); Mon, 30 Dec 2019 05:29:52 -0500 Received: by mail-ed1-f68.google.com with SMTP id t17so32199848eds.6; Mon, 30 Dec 2019 02:29:50 -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=PwtE0uWXdKmxVJODrbuMNmNzeLwAALGAuXPNGL2Ahhs=; b=rsGj3ARPmD5DigIfaMg92HbFmXr/7NaWfXyOm0AqmfLiv3rL5HFtVKAI86fvjJDS+b JKvdry2kSSDy+3Y5SIZ2hoGynu9gymwBCyMIxbrjzhOyeruInF7EfFAT3yuSLWjnd5xU pfgI1wzFeh/728rRS5M1P0RB2sCAQVxlldHGKIu/r0JMtvG77JA7WYDI1m2NcGR0zdXc ASJZxDrK4Zd5NCrHS2+NIGiN9kJ2vBoPL1PBxTqr8bFsVPyw7f6FuX6NXobTLYhzsrkl u4FD+0G7FhNTpnYZHLkOqGRJ+8usfDpcT8P57P9lgvtjbovMn2AUp2rtUHZK4Y4pKyX3 skyw== 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=PwtE0uWXdKmxVJODrbuMNmNzeLwAALGAuXPNGL2Ahhs=; b=bdjU9cD56Shg9i9QYUjBS0PEBh9EhLUybEiARVJ78vEJNh5Jl8gUXHG4RUEONYMqAq 4M+UDJtNINZwWA4w4x0iGECzDaRG9dVGzlrp2aGRCXNNq389JPN1XmaU5uwhJrRdJKQp 07nM/zvTTAz2yhSQ0y3x9MA2KejqAzsUCyOH9HsQ65QKqzl8dQG0/5lRnirJJ7Lbs0ao oBFytW1SIzpngsplCLFwLWUYrED8SaNKcOnFnyAM/47bWchEwQUkHPEBVsUx9LWPc/2G B49DwZ1UjCyt1djc/DsTiciX0b4UFo8A9iktTqk0WIyakt5zqyUCkLltm4T7aWD4gxJY tUhw== X-Gm-Message-State: APjAAAVeVueSKIggXOva+Ronk4EGLD6EbWW0SPdZvydsXbKNeXBnYvwd ZaS+l5HJWLPVyDqw+Z0WcY4LicV8 X-Google-Smtp-Source: APXvYqwzWXWSyiYVprRZWQ3LV58/REKDbd8x5qbbm66JuX8iQ9EMjqZ9e2RMY1bbtV2bAqGXT1Tqsg== X-Received: by 2002:a17:906:1904:: with SMTP id a4mr56656291eje.134.1577701790050; Mon, 30 Dec 2019 02:29:50 -0800 (PST) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:4955:5100:b9e0:6ef7:286d:4897]) by smtp.gmail.com with ESMTPSA id v8sm5246630edw.21.2019.12.30.02.29.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Dec 2019 02:29:49 -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, danil.kipnis@cloud.ionos.com, jinpu.wang@cloud.ionos.com, rpenyaev@suse.de Subject: [PATCH v6 05/25] rtrs: client: private header with client structs and functions Date: Mon, 30 Dec 2019 11:29:22 +0100 Message-Id: <20191230102942.18395-6-jinpuwang@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191230102942.18395-1-jinpuwang@gmail.com> References: <20191230102942.18395-1-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-client module, mainly for managing rtrs sessions, creating/destroying sysfs entries, accounting statistics on client side. Signed-off-by: Danil Kipnis Signed-off-by: Jack Wang --- drivers/infiniband/ulp/rtrs/rtrs-clt.h | 296 +++++++++++++++++++++++++ 1 file changed, 296 insertions(+) create mode 100644 drivers/infiniband/ulp/rtrs/rtrs-clt.h diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.h b/drivers/infiniband/ulp/rtrs/rtrs-clt.h new file mode 100644 index 000000000000..99e8cf53c5d1 --- /dev/null +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.h @@ -0,0 +1,296 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * InfiniBand 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 1&1 IONOS SE. All rights reserved. + */ + +#ifndef RTRS_CLT_H +#define RTRS_CLT_H + +#include +#include "rtrs-pri.h" + +/** + * enum rtrs_clt_state - Client states. + */ +enum rtrs_clt_state { + RTRS_CLT_CONNECTING, + RTRS_CLT_CONNECTING_ERR, + RTRS_CLT_RECONNECTING, + RTRS_CLT_CONNECTED, + RTRS_CLT_CLOSING, + RTRS_CLT_CLOSED, + RTRS_CLT_DEAD, +}; + +static inline const char *rtrs_clt_state_str(enum rtrs_clt_state state) +{ + switch (state) { + case RTRS_CLT_CONNECTING: + return "RTRS_CLT_CONNECTING"; + case RTRS_CLT_CONNECTING_ERR: + return "RTRS_CLT_CONNECTING_ERR"; + case RTRS_CLT_RECONNECTING: + return "RTRS_CLT_RECONNECTING"; + case RTRS_CLT_CONNECTED: + return "RTRS_CLT_CONNECTED"; + case RTRS_CLT_CLOSING: + return "RTRS_CLT_CLOSING"; + case RTRS_CLT_CLOSED: + return "RTRS_CLT_CLOSED"; + case RTRS_CLT_DEAD: + return "RTRS_CLT_DEAD"; + default: + return "UNKNOWN"; + } +} + +enum rtrs_mp_policy { + MP_POLICY_RR, + MP_POLICY_MIN_INFLIGHT, +}; + +struct rtrs_clt_stats_reconnects { + int successful_cnt; + int fail_cnt; +}; + +struct rtrs_clt_stats_wc_comp { + u32 cnt; + u64 total_cnt; +}; + +struct rtrs_clt_stats_cpu_migr { + atomic_t from; + int to; +}; + +struct rtrs_clt_stats_rdma { + struct { + u64 cnt; + u64 size_total; + } dir[2]; + + u64 failover_cnt; +}; + +struct rtrs_clt_stats_rdma_lat { + u64 read; + u64 write; +}; + +#define MIN_LOG_SG 2 +#define MAX_LOG_SG 5 +#define MAX_LIN_SG BIT(MIN_LOG_SG) +#define SG_DISTR_SZ (MAX_LOG_SG - MIN_LOG_SG + MAX_LIN_SG + 2) + +#define MAX_LOG_LAT 16 +#define MIN_LOG_LAT 0 +#define LOG_LAT_SZ (MAX_LOG_LAT - MIN_LOG_LAT + 2) + +struct rtrs_clt_stats_pcpu { + struct rtrs_clt_stats_cpu_migr cpu_migr; + struct rtrs_clt_stats_rdma rdma; + u64 sg_list_total; + u64 sg_list_distr[SG_DISTR_SZ]; + struct rtrs_clt_stats_rdma_lat rdma_lat_distr[LOG_LAT_SZ]; + struct rtrs_clt_stats_rdma_lat rdma_lat_max; + struct rtrs_clt_stats_wc_comp wc_comp; +}; + +struct rtrs_clt_stats { + bool enable_rdma_lat; + struct rtrs_clt_stats_pcpu __percpu *pcpu_stats; + struct rtrs_clt_stats_reconnects reconnects; + atomic_t inflight; +}; + +struct rtrs_clt_con { + struct rtrs_con c; + struct rtrs_iu *rsp_ius; + u32 queue_size; + unsigned int cpu; + atomic_t io_cnt; + int cm_err; +}; + +/** + * rtrs_permit - permits the memory allocation for future RDMA operation + */ +struct rtrs_permit { + enum rtrs_clt_con_type con_type; + unsigned int cpu_id; + unsigned int mem_id; + unsigned int mem_off; +}; + +/** + * rtrs_clt_io_req - describes one inflight IO request + */ +struct rtrs_clt_io_req { + struct list_head list; + struct rtrs_iu *iu; + struct scatterlist *sglist; /* list holding user data */ + unsigned int sg_cnt; + unsigned int sg_size; + unsigned int data_len; + unsigned int usr_len; + void *priv; + bool in_use; + struct rtrs_clt_con *con; + struct rtrs_sg_desc *desc; + struct ib_sge *sge; + struct rtrs_permit *permit; + enum dma_data_direction dir; + rtrs_conf_fn *conf; + unsigned long start_jiffies; + + struct ib_mr *mr; + struct ib_cqe inv_cqe; + struct completion inv_comp; + int inv_errno; + bool need_inv_comp; + bool need_inv; +}; + +struct rtrs_rbuf { + u64 addr; + u32 rkey; +}; + +struct rtrs_clt_sess { + struct rtrs_sess s; + struct rtrs_clt *clt; + wait_queue_head_t state_wq; + enum rtrs_clt_state state; + atomic_t connected_cnt; + struct mutex init_mutex; + struct rtrs_clt_io_req *reqs; + struct delayed_work reconnect_dwork; + struct work_struct close_work; + unsigned int reconnect_attempts; + bool established; + struct rtrs_rbuf *rbufs; + size_t max_io_size; + u32 max_hdr_size; + u32 chunk_size; + size_t queue_depth; + u32 max_pages_per_mr; + int max_send_sge; + u32 flags; + struct kobject kobj; + struct kobject kobj_stats; + struct rtrs_clt_stats stats; + /* cache hca_port and hca_name to display in sysfs */ + u8 hca_port; + char hca_name[IB_DEVICE_NAME_MAX]; + struct list_head __percpu + *mp_skip_entry; +}; + +struct rtrs_clt { + struct list_head /* __rcu */ paths_list; + size_t paths_num; + struct rtrs_clt_sess + __rcu * __percpu *pcpu_path; + + bool opened; + uuid_t paths_uuid; + int paths_up; + struct mutex paths_mutex; + struct mutex paths_ev_mutex; + char sessname[NAME_MAX]; + short port; + unsigned int max_reconnect_attempts; + unsigned int reconnect_delay_sec; + unsigned int max_segments; + void *permits; + unsigned long *permits_map; + size_t queue_depth; + size_t max_io_size; + wait_queue_head_t permits_wait; + size_t pdu_sz; + void *priv; + link_clt_ev_fn *link_ev; + struct device dev; + struct kobject kobj_paths; + enum rtrs_mp_policy mp_policy; +}; + +static inline struct rtrs_clt_con *to_clt_con(struct rtrs_con *c) +{ + return container_of(c, struct rtrs_clt_con, c); +} + +static inline struct rtrs_clt_sess *to_clt_sess(struct rtrs_sess *s) +{ + return container_of(s, struct rtrs_clt_sess, s); +} + +#define PERMIT_SIZE(clt) (sizeof(struct rtrs_permit) + (clt)->pdu_sz) +#define GET_PERMIT(clt, idx) ((clt)->permits + PERMIT_SIZE(clt) * idx) + +int rtrs_clt_reconnect_from_sysfs(struct rtrs_clt_sess *sess); +int rtrs_clt_disconnect_from_sysfs(struct rtrs_clt_sess *sess); +int rtrs_clt_create_path_from_sysfs(struct rtrs_clt *clt, + struct rtrs_addr *addr); +int rtrs_clt_remove_path_from_sysfs(struct rtrs_clt_sess *sess, + const struct attribute *sysfs_self); + +void rtrs_clt_set_max_reconnect_attempts(struct rtrs_clt *clt, int value); +int rtrs_clt_get_max_reconnect_attempts(const struct rtrs_clt *clt); + +/* rtrs-clt-stats.c */ + +int rtrs_clt_init_stats(struct rtrs_clt_stats *stats); +void rtrs_clt_free_stats(struct rtrs_clt_stats *stats); + +void rtrs_clt_decrease_inflight(struct rtrs_clt_stats *s); +void rtrs_clt_inc_failover_cnt(struct rtrs_clt_stats *s); + +void rtrs_clt_update_rdma_lat(struct rtrs_clt_stats *s, bool read, + unsigned long ms); +void rtrs_clt_update_wc_stats(struct rtrs_clt_con *con); +void rtrs_clt_update_all_stats(struct rtrs_clt_io_req *req, int dir); + +int rtrs_clt_reset_sg_list_distr_stats(struct rtrs_clt_stats *stats, + bool enable); +int rtrs_clt_stats_sg_list_distr_to_str(struct rtrs_clt_stats *stats, + char *buf, size_t len); +int rtrs_clt_reset_rdma_lat_distr_stats(struct rtrs_clt_stats *stats, + bool enable); +ssize_t rtrs_clt_stats_rdma_lat_distr_to_str(struct rtrs_clt_stats *stats, + char *page, size_t len); +int rtrs_clt_reset_cpu_migr_stats(struct rtrs_clt_stats *stats, bool enable); +int rtrs_clt_stats_migration_cnt_to_str(struct rtrs_clt_stats *stats, char *buf, + size_t len); +int rtrs_clt_reset_reconnects_stat(struct rtrs_clt_stats *stats, bool enable); +int rtrs_clt_stats_reconnects_to_str(struct rtrs_clt_stats *stats, char *buf, + size_t len); +int rtrs_clt_reset_wc_comp_stats(struct rtrs_clt_stats *stats, bool enable); +int rtrs_clt_stats_wc_completion_to_str(struct rtrs_clt_stats *stats, char *buf, + size_t len); +int rtrs_clt_reset_rdma_stats(struct rtrs_clt_stats *stats, bool enable); +ssize_t rtrs_clt_stats_rdma_to_str(struct rtrs_clt_stats *stats, + char *page, size_t len); +int rtrs_clt_reset_all_stats(struct rtrs_clt_stats *stats, bool enable); +ssize_t rtrs_clt_reset_all_help(struct rtrs_clt_stats *stats, + char *page, size_t len); + +/* rtrs-clt-sysfs.c */ + +int rtrs_clt_create_sysfs_root_folders(struct rtrs_clt *clt); +int rtrs_clt_create_sysfs_root_files(struct rtrs_clt *clt); +void rtrs_clt_destroy_sysfs_root_folders(struct rtrs_clt *clt); +void rtrs_clt_destroy_sysfs_root_files(struct rtrs_clt *clt); + +int rtrs_clt_create_sess_files(struct rtrs_clt_sess *sess); +void rtrs_clt_destroy_sess_files(struct rtrs_clt_sess *sess, + const struct attribute *sysfs_self); + +#endif /* RTRS_CLT_H */