[PATCH 08/24] ibtrs: server: private header with server structs and functions

Roman Pen
2018-02-02T14:08:48Z

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.penyaev@profitbricks.com>
Signed-off-by: Danil Kipnis <danil.kipnis@profitbricks.com>
Cc: Jack Wang <jinpu.wang@profitbricks.com>
---
drivers/infiniband/ulp/ibtrs/ibtrs-srv.h | 169 +++++++++++++++++++++++++++++++
1 file changed, 169 insertions(+)

diff --git a/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h b/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h
new file mode 100644
index 000000000000..f54e159eaf2a
--- /dev/null
+++ b/drivers/infiniband/ulp/ibtrs/ibtrs-srv.h
@@ -0,0 +1,169 @@
+/*
+ * 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>
+ *
+ * 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/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;
+ u64 data_dma_addr;
+ struct ibtrs_msg_rdma_read *msg;
+ struct ib_rdma_wr *tx_wr;
+ struct ib_sge *tx_sg;
+};
+
+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;
+ dma_addr_t *rdma_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 kobject kobj;
+ 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;
+};
+
+/* 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_sysfs_module_files(void);
+void ibtrs_srv_destroy_sysfs_module_files(void);
+
+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