From: Jack Wang <jinpuwang@gmail.com>
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 v5 05/25] rtrs: client: private header with client structs and functions
Date: Fri, 20 Dec 2019 16:50:49 +0100 [thread overview]
Message-ID: <20191220155109.8959-6-jinpuwang@gmail.com> (raw)
In-Reply-To: <20191220155109.8959-1-jinpuwang@gmail.com>
From: Jack Wang <jinpu.wang@cloud.ionos.com>
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 <danil.kipnis@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
---
drivers/infiniband/ulp/rtrs/rtrs-clt.h | 314 +++++++++++++++++++++++++
1 file changed, 314 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..df774ab3f9b5
--- /dev/null
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.h
@@ -0,0 +1,314 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * InfiniBand Transport Layer
+ *
+ * Copyright (c) 2014 - 2017 ProfitBricks GmbH. All rights reserved.
+ * Authors: Fabian Holler <mail@fholler.de>
+ * Jack Wang <jinpu.wang@profitbricks.com>
+ * Kleber Souza <kleber.souza@profitbricks.com>
+ * Danil Kipnis <danil.kipnis@profitbricks.com>
+ * Roman Penyaev <roman.penyaev@profitbricks.com>
+ * Milind Dumbare <Milind.dumbare@gmail.com>
+ *
+ * Copyright (c) 2017 - 2018 ProfitBricks GmbH. All rights reserved.
+ * Authors: Danil Kipnis <danil.kipnis@profitbricks.com>
+ * Roman Penyaev <roman.penyaev@profitbricks.com>
+ * Swapnil Ingle <swapnil.ingle@profitbricks.com>
+ *
+ * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
+ * Authors: Roman Penyaev <roman.penyaev@profitbricks.com>
+ * Jinpu Wang <jinpu.wang@cloud.ionos.com>
+ * Danil Kipnis <danil.kipnis@cloud.ionos.com>
+ */
+/* Copyright (c) 2019 1&1 IONOS SE. All rights reserved.
+ * Authors: Jack Wang <jinpu.wang@cloud.ionos.com>
+ * Danil Kipnis <danil.kipnis@cloud.ionos.com>
+ * Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
+ * Lutz Pogrell <lutz.pogrell@cloud.ionos.com>
+ */
+
+#ifndef RTRS_CLT_H
+#define RTRS_CLT_H
+
+#include <linux/device.h>
+#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 */
--
2.17.1
next prev parent reply other threads:[~2019-12-20 15:51 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-20 15:50 [PATCH v5 00/25] RTRS (former IBTRS) rdma transport library and the corresponding RNBD (former IBNBD) rdma network block device Jack Wang
2019-12-20 15:50 ` [PATCH v5 01/25] sysfs: export sysfs_remove_file_self() Jack Wang
2019-12-20 16:26 ` Jinpu Wang
2019-12-20 15:50 ` [PATCH v5 02/25] rtrs: public interface header to establish RDMA connections Jack Wang
2019-12-21 10:15 ` Leon Romanovsky
2019-12-21 14:27 ` Danil Kipnis
2019-12-22 7:36 ` Leon Romanovsky
2019-12-23 7:38 ` Jinpu Wang
2019-12-23 8:04 ` Leon Romanovsky
2019-12-23 10:31 ` Jinpu Wang
2019-12-20 15:50 ` [PATCH v5 03/25] rtrs: private headers with rtrs protocol structs and helpers Jack Wang
2019-12-20 15:50 ` [PATCH v5 04/25] rtrs: core: lib functions shared between client and server modules Jack Wang
2019-12-20 15:50 ` Jack Wang [this message]
2019-12-20 15:50 ` [PATCH v5 06/25] rtrs: client: main functionality Jack Wang
2019-12-20 15:50 ` [PATCH v5 07/25] rtrs: client: statistics functions Jack Wang
2019-12-20 15:50 ` [PATCH v5 08/25] rtrs: client: sysfs interface functions Jack Wang
2019-12-20 15:50 ` [PATCH v5 09/25] rtrs: server: private header with server structs and functions Jack Wang
2019-12-20 15:50 ` [PATCH v5 10/25] rtrs: server: main functionality Jack Wang
2019-12-20 15:50 ` [PATCH v5 11/25] rtrs: server: statistics functions Jack Wang
2019-12-20 15:50 ` [PATCH v5 12/25] rtrs: server: sysfs interface functions Jack Wang
2019-12-20 15:50 ` [PATCH v5 13/25] rtrs: include client and server modules into kernel compilation Jack Wang
2019-12-20 15:50 ` [PATCH v5 14/25] rtrs: a bit of documentation Jack Wang
2019-12-20 15:50 ` [PATCH v5 15/25] rnbd: private headers with rnbd protocol structs and helpers Jack Wang
2019-12-20 15:51 ` [PATCH v5 16/25] rnbd: client: private header with client structs and functions Jack Wang
2019-12-20 15:51 ` [PATCH v5 17/25] rnbd: client: main functionality Jack Wang
2019-12-20 15:51 ` [PATCH v5 18/25] rnbd: client: sysfs interface functions Jack Wang
2019-12-20 15:51 ` [PATCH v5 19/25] rnbd: server: private header with server structs and functions Jack Wang
2019-12-20 15:51 ` [PATCH v5 20/25] rnbd: server: main functionality Jack Wang
2019-12-20 15:51 ` [PATCH v5 21/25] rnbd: server: functionality for IO submission to file or block dev Jack Wang
2019-12-20 15:51 ` [PATCH v5 22/25] rnbd: server: sysfs interface functions Jack Wang
2019-12-23 8:14 ` Leon Romanovsky
2019-12-23 8:33 ` Jinpu Wang
2019-12-20 15:51 ` [PATCH v5 23/25] rnbd: include client and server modules into kernel compilation Jack Wang
2019-12-20 15:51 ` [PATCH v5 24/25] rnbd: a bit of documentation Jack Wang
2019-12-20 15:51 ` [PATCH v5 25/25] MAINTAINERS: Add maintainers for RNBD/RTRS modules Jack Wang
2019-12-22 9:55 ` Gal Pressman
2019-12-23 7:20 ` Jinpu Wang
2019-12-21 10:17 ` [PATCH v5 00/25] RTRS (former IBTRS) rdma transport library and the corresponding RNBD (former IBNBD) rdma network block device Leon Romanovsky
2020-01-02 18:18 ` Jason Gunthorpe
2020-01-03 12:39 ` Jinpu Wang
2020-01-03 16:28 ` Bart Van Assche
2020-01-06 17:07 ` Jinpu Wang
2020-01-07 10:56 ` Jinpu Wang
2020-01-16 16:41 ` Bart Van Assche
2020-01-16 16:46 ` Jinpu Wang
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