This header describes main structs and functions used by ibtrs-server module, mainly for accepting IBTRS sessions, creating/destroying sysfs entries, accounting statistics on server side.
Signed-off-by: Roman Pen <roman.peny...@profitbricks.com> Signed-off-by: Danil Kipnis <danil.kip...@profitbricks.com> Cc: Jack Wang <jinpu.w...@profitbricks.com> --- drivers/infiniband/ulp/ibtrs/ibtrs-srv.h | 177 +++++++++++++++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 drivers/infiniband/ulp/ibtrs/ibtrs-srv.h diff --git a/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h b/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h new file mode 100644 index 000000000000..b1e32136f352 --- /dev/null +++ b/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h @@ -0,0 +1,177 @@ +/* + * InfiniBand Transport Layer + * + * Copyright (c) 2014 - 2017 ProfitBricks GmbH. All rights reserved. + * Authors: Fabian Holler <m...@fholler.de> + * Jack Wang <jinpu.w...@profitbricks.com> + * Kleber Souza <kleber.so...@profitbricks.com> + * Danil Kipnis <danil.kip...@profitbricks.com> + * Roman Penyaev <roman.peny...@profitbricks.com> + * Milind Dumbare <milind.dumb...@gmail.com> + * + * Copyright (c) 2017 - 2018 ProfitBricks GmbH. All rights reserved. + * Authors: Danil Kipnis <danil.kip...@profitbricks.com> + * Roman Penyaev <roman.peny...@profitbricks.com> + * Swapnil Ingle <swapnil.in...@profitbricks.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef IBTRS_SRV_H +#define IBTRS_SRV_H + +#include <linux/device.h> +#include <linux/refcount.h> +#include "ibtrs-pri.h" + +/** + * enum ibtrs_srv_state - Server states. + */ +enum ibtrs_srv_state { + IBTRS_SRV_CONNECTING, + IBTRS_SRV_CONNECTED, + IBTRS_SRV_CLOSING, + IBTRS_SRV_CLOSED, +}; + +static inline const char *ibtrs_srv_state_str(enum ibtrs_srv_state state) +{ + switch (state) { + case IBTRS_SRV_CONNECTING: + return "IBTRS_SRV_CONNECTING"; + case IBTRS_SRV_CONNECTED: + return "IBTRS_SRV_CONNECTED"; + case IBTRS_SRV_CLOSING: + return "IBTRS_SRV_CLOSING"; + case IBTRS_SRV_CLOSED: + return "IBTRS_SRV_CLOSED"; + default: + return "UNKNOWN"; + } +} + +struct ibtrs_stats_wc_comp { + atomic64_t calls; + atomic64_t total_wc_cnt; +}; + +struct ibtrs_srv_stats_rdma_stats { + struct { + atomic64_t cnt; + atomic64_t size_total; + } dir[2]; +}; + +struct ibtrs_srv_stats { + struct ibtrs_srv_stats_rdma_stats rdma_stats; + atomic_t apm_cnt; + struct ibtrs_stats_wc_comp wc_comp; +}; + +struct ibtrs_srv_con { + struct ibtrs_con c; + atomic_t wr_cnt; +}; + +struct ibtrs_srv_op { + struct ibtrs_srv_con *con; + u32 msg_id; + u8 dir; + struct ibtrs_msg_rdma_read *rd_msg; + struct ib_rdma_wr *tx_wr; + struct ib_sge *tx_sg; +}; + +struct ibtrs_srv_mr { + struct ib_mr *mr; + struct sg_table sgt; +}; + +struct ibtrs_srv_sess { + struct ibtrs_sess s; + struct ibtrs_srv *srv; + struct work_struct close_work; + enum ibtrs_srv_state state; + spinlock_t state_lock; + int cur_cq_vector; + struct ibtrs_srv_op **ops_ids; + atomic_t ids_inflight; + wait_queue_head_t ids_waitq; + struct ibtrs_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 ibtrs_srv_stats stats; +}; + +struct ibtrs_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 ibtrs_srv_ctx *ctx; + struct list_head ctx_list; + void *priv; + size_t queue_depth; + struct page **chunks; + struct device dev; + unsigned dev_ref; + struct kobject kobj_paths; +}; + +struct ibtrs_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 *ibtrs_dev_class; + +/* See ibtrs-log.h */ +#define TYPES_TO_SESSNAME(obj) \ + LIST(CASE(obj, struct ibtrs_srv_sess *, s.sessname)) + +void ibtrs_srv_queue_close(struct ibtrs_srv_sess *sess); + +/* ibtrs-srv-stats.c */ + +void ibtrs_srv_update_rdma_stats(struct ibtrs_srv_stats *s, size_t size, int d); +void ibtrs_srv_update_wc_stats(struct ibtrs_srv_stats *s); + +int ibtrs_srv_reset_rdma_stats(struct ibtrs_srv_stats *stats, bool enable); +ssize_t ibtrs_srv_stats_rdma_to_str(struct ibtrs_srv_stats *stats, + char *page, size_t len); +int ibtrs_srv_reset_wc_completion_stats(struct ibtrs_srv_stats *stats, + bool enable); +int ibtrs_srv_stats_wc_completion_to_str(struct ibtrs_srv_stats *stats, char *buf, + size_t len); +int ibtrs_srv_reset_all_stats(struct ibtrs_srv_stats *stats, bool enable); +ssize_t ibtrs_srv_reset_all_help(struct ibtrs_srv_stats *stats, + char *page, size_t len); + +/* ibtrs-srv-sysfs.c */ + +int ibtrs_srv_create_sess_files(struct ibtrs_srv_sess *sess); +void ibtrs_srv_destroy_sess_files(struct ibtrs_srv_sess *sess); + +#endif /* IBTRS_SRV_H */ -- 2.13.1
