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, jgg@mellanox.com, dledford@redhat.com,
danil.kipnis@cloud.ionos.com, rpenyaev@suse.de,
Roman Pen <roman.penyaev@profitbricks.com>,
Jack Wang <jinpu.wang@cloud.ionos.com>
Subject: [PATCH v4 12/25] ibtrs: server: sysfs interface functions
Date: Thu, 20 Jun 2019 17:03:24 +0200 [thread overview]
Message-ID: <20190620150337.7847-13-jinpuwang@gmail.com> (raw)
In-Reply-To: <20190620150337.7847-1-jinpuwang@gmail.com>
From: Roman Pen <roman.penyaev@profitbricks.com>
This is the sysfs interface to IBTRS sessions on server side:
/sys/devices/virtual/ibtrs-server/<SESS-NAME>/
*** IBTRS session accepted from a client peer
|
|- paths/<SRC@DST>/
*** established paths from a client in a session
|
|- disconnect
| *** disconnect path
|
|- hca_name
| *** HCA name
|
|- hca_port
| *** HCA port
|
|- stats/
*** current path statistics
|
|- rdma
|- reset_all
|- wc_completions
Signed-off-by: Danil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
---
.../infiniband/ulp/ibtrs/ibtrs-srv-sysfs.c | 303 ++++++++++++++++++
1 file changed, 303 insertions(+)
create mode 100644 drivers/infiniband/ulp/ibtrs/ibtrs-srv-sysfs.c
diff --git a/drivers/infiniband/ulp/ibtrs/ibtrs-srv-sysfs.c b/drivers/infiniband/ulp/ibtrs/ibtrs-srv-sysfs.c
new file mode 100644
index 000000000000..c48c368c1906
--- /dev/null
+++ b/drivers/infiniband/ulp/ibtrs/ibtrs-srv-sysfs.c
@@ -0,0 +1,303 @@
+// 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>
+ *
+ * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
+ * Authors: Roman Penyaev <roman.penyaev@profitbricks.com>
+ * Jack Wang <jinpu.wang@cloud.ionos.com>
+ * Danil Kipnis <danil.kipnis@cloud.ionos.com>
+ */
+
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
+
+#include "ibtrs-pri.h"
+#include "ibtrs-srv.h"
+#include "ibtrs-log.h"
+
+static struct kobj_type ktype = {
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+static ssize_t ibtrs_srv_disconnect_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *page)
+{
+ return scnprintf(page, PAGE_SIZE, "Usage: echo 1 > %s\n",
+ attr->attr.name);
+}
+
+static ssize_t ibtrs_srv_disconnect_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ibtrs_srv_sess *sess;
+ char str[MAXHOSTNAMELEN];
+
+ sess = container_of(kobj, struct ibtrs_srv_sess, kobj);
+ if (!sysfs_streq(buf, "1")) {
+ ibtrs_err(sess, "%s: invalid value: '%s'\n",
+ attr->attr.name, buf);
+ return -EINVAL;
+ }
+
+ sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr, str, sizeof(str));
+
+ ibtrs_info(sess, "disconnect for path %s requested\n", str);
+ ibtrs_srv_queue_close(sess);
+
+ return count;
+}
+
+static struct kobj_attribute ibtrs_srv_disconnect_attr =
+ __ATTR(disconnect, 0644,
+ ibtrs_srv_disconnect_show, ibtrs_srv_disconnect_store);
+
+static ssize_t ibtrs_srv_hca_port_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *page)
+{
+ struct ibtrs_srv_sess *sess;
+ struct ibtrs_con *usr_con;
+
+ sess = container_of(kobj, typeof(*sess), kobj);
+ usr_con = sess->s.con[0];
+
+ return scnprintf(page, PAGE_SIZE, "%u\n",
+ usr_con->cm_id->port_num);
+}
+
+static struct kobj_attribute ibtrs_srv_hca_port_attr =
+ __ATTR(hca_port, 0444, ibtrs_srv_hca_port_show, NULL);
+
+static ssize_t ibtrs_srv_hca_name_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *page)
+{
+ struct ibtrs_srv_sess *sess;
+
+ sess = container_of(kobj, struct ibtrs_srv_sess, kobj);
+
+ return scnprintf(page, PAGE_SIZE, "%s\n",
+ sess->s.dev->ib_dev->name);
+}
+
+static struct kobj_attribute ibtrs_srv_hca_name_attr =
+ __ATTR(hca_name, 0444, ibtrs_srv_hca_name_show, NULL);
+
+static ssize_t ibtrs_srv_src_addr_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *page)
+{
+ struct ibtrs_srv_sess *sess;
+ int cnt;
+
+ sess = container_of(kobj, struct ibtrs_srv_sess, kobj);
+ cnt = sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr,
+ page, PAGE_SIZE);
+ return cnt + scnprintf(page + cnt, PAGE_SIZE - cnt, "\n");
+}
+
+static struct kobj_attribute ibtrs_srv_src_addr_attr =
+ __ATTR(src_addr, 0444, ibtrs_srv_src_addr_show, NULL);
+
+static ssize_t ibtrs_srv_dst_addr_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *page)
+{
+ struct ibtrs_srv_sess *sess;
+ int cnt;
+
+ sess = container_of(kobj, struct ibtrs_srv_sess, kobj);
+ cnt = sockaddr_to_str((struct sockaddr *)&sess->s.src_addr,
+ page, PAGE_SIZE);
+ return cnt + scnprintf(page + cnt, PAGE_SIZE - cnt, "\n");
+}
+
+static struct kobj_attribute ibtrs_srv_dst_addr_attr =
+ __ATTR(dst_addr, 0444, ibtrs_srv_dst_addr_show, NULL);
+
+static struct attribute *ibtrs_srv_sess_attrs[] = {
+ &ibtrs_srv_hca_name_attr.attr,
+ &ibtrs_srv_hca_port_attr.attr,
+ &ibtrs_srv_src_addr_attr.attr,
+ &ibtrs_srv_dst_addr_attr.attr,
+ &ibtrs_srv_disconnect_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ibtrs_srv_sess_attr_group = {
+ .attrs = ibtrs_srv_sess_attrs,
+};
+
+STAT_ATTR(struct ibtrs_srv_sess, rdma,
+ ibtrs_srv_stats_rdma_to_str,
+ ibtrs_srv_reset_rdma_stats);
+
+STAT_ATTR(struct ibtrs_srv_sess, wc_completion,
+ ibtrs_srv_stats_wc_completion_to_str,
+ ibtrs_srv_reset_wc_completion_stats);
+
+STAT_ATTR(struct ibtrs_srv_sess, reset_all,
+ ibtrs_srv_reset_all_help,
+ ibtrs_srv_reset_all_stats);
+
+static struct attribute *ibtrs_srv_stats_attrs[] = {
+ &rdma_attr.attr,
+ &wc_completion_attr.attr,
+ &reset_all_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ibtrs_srv_stats_attr_group = {
+ .attrs = ibtrs_srv_stats_attrs,
+};
+
+static void ibtrs_srv_dev_release(struct device *dev)
+{
+ /* Nobody plays with device references, so nop */
+}
+
+static int ibtrs_srv_create_once_sysfs_root_folders(struct ibtrs_srv_sess *sess)
+{
+ struct ibtrs_srv *srv = sess->srv;
+ int err = 0;
+
+ mutex_lock(&srv->paths_mutex);
+ if (srv->dev_ref++) {
+ /*
+ * Just increase device reference. We can't use get_device()
+ * because we need to unregister device when ref goes to 0,
+ * not just to put it.
+ */
+ goto unlock;
+ }
+ srv->dev.class = ibtrs_dev_class;
+ srv->dev.release = ibtrs_srv_dev_release;
+ dev_set_name(&srv->dev, "%s", sess->s.sessname);
+
+ err = device_register(&srv->dev);
+ if (unlikely(err)) {
+ pr_err("device_register(): %d\n", err);
+ goto unlock;
+ }
+ err = kobject_init_and_add(&srv->kobj_paths, &ktype,
+ &srv->dev.kobj, "paths");
+ if (unlikely(err)) {
+ pr_err("kobject_init_and_add(): %d\n", err);
+ device_unregister(&srv->dev);
+ goto unlock;
+ }
+unlock:
+ mutex_unlock(&srv->paths_mutex);
+
+ return err;
+}
+
+static void
+ibtrs_srv_destroy_once_sysfs_root_folders(struct ibtrs_srv_sess *sess)
+{
+ struct ibtrs_srv *srv = sess->srv;
+
+ mutex_lock(&srv->paths_mutex);
+ if (!--srv->dev_ref) {
+ kobject_del(&srv->kobj_paths);
+ kobject_put(&srv->kobj_paths);
+ device_unregister(&srv->dev);
+ }
+ mutex_unlock(&srv->paths_mutex);
+}
+
+static int ibtrs_srv_create_stats_files(struct ibtrs_srv_sess *sess)
+{
+ int err;
+
+ err = kobject_init_and_add(&sess->kobj_stats, &ktype,
+ &sess->kobj, "stats");
+ if (unlikely(err)) {
+ ibtrs_err(sess, "kobject_init_and_add(): %d\n", err);
+ return err;
+ }
+ err = sysfs_create_group(&sess->kobj_stats,
+ &ibtrs_srv_stats_attr_group);
+ if (unlikely(err)) {
+ ibtrs_err(sess, "sysfs_create_group(): %d\n", err);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ kobject_del(&sess->kobj_stats);
+ kobject_put(&sess->kobj_stats);
+
+ return err;
+}
+
+int ibtrs_srv_create_sess_files(struct ibtrs_srv_sess *sess)
+{
+ struct ibtrs_srv *srv = sess->srv;
+ char str[NAME_MAX];
+ int err, cnt;
+
+ cnt = sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr,
+ str, sizeof(str));
+ cnt += scnprintf(str + cnt, sizeof(str) - cnt, "@");
+ sockaddr_to_str((struct sockaddr *)&sess->s.src_addr,
+ str + cnt, sizeof(str) - cnt);
+
+ err = ibtrs_srv_create_once_sysfs_root_folders(sess);
+ if (unlikely(err))
+ return err;
+
+ err = kobject_init_and_add(&sess->kobj, &ktype, &srv->kobj_paths,
+ "%s", str);
+ if (unlikely(err)) {
+ ibtrs_err(sess, "kobject_init_and_add(): %d\n", err);
+ goto destroy_root;
+ }
+ err = sysfs_create_group(&sess->kobj, &ibtrs_srv_sess_attr_group);
+ if (unlikely(err)) {
+ ibtrs_err(sess, "sysfs_create_group(): %d\n", err);
+ goto put_kobj;
+ }
+ err = ibtrs_srv_create_stats_files(sess);
+ if (unlikely(err))
+ goto remove_group;
+
+ return 0;
+
+remove_group:
+ sysfs_remove_group(&sess->kobj, &ibtrs_srv_sess_attr_group);
+put_kobj:
+ kobject_del(&sess->kobj);
+ kobject_put(&sess->kobj);
+destroy_root:
+ ibtrs_srv_destroy_once_sysfs_root_folders(sess);
+
+ return err;
+}
+
+void ibtrs_srv_destroy_sess_files(struct ibtrs_srv_sess *sess)
+{
+ if (sess->kobj.state_in_sysfs) {
+ kobject_del(&sess->kobj_stats);
+ kobject_put(&sess->kobj_stats);
+ kobject_del(&sess->kobj);
+ kobject_put(&sess->kobj);
+
+ ibtrs_srv_destroy_once_sysfs_root_folders(sess);
+ }
+}
--
2.17.1
next prev parent reply other threads:[~2019-06-20 15:03 UTC|newest]
Thread overview: 148+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-20 15:03 [PATCH v4 00/25] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD) Jack Wang
2019-06-20 15:03 ` [PATCH v4 01/25] sysfs: export sysfs_remove_file_self() Jack Wang
2019-09-23 17:21 ` Bart Van Assche
2019-09-25 9:30 ` Danil Kipnis
2019-06-20 15:03 ` [PATCH v4 02/25] ibtrs: public interface header to establish RDMA connections Jack Wang
2019-09-23 17:44 ` Bart Van Assche
2019-09-25 10:20 ` Danil Kipnis
2019-09-25 15:38 ` Bart Van Assche
2019-06-20 15:03 ` [PATCH v4 03/25] ibtrs: private headers with IBTRS protocol structs and helpers Jack Wang
2019-09-23 22:50 ` Bart Van Assche
2019-09-25 21:45 ` Danil Kipnis
2019-09-25 21:57 ` Bart Van Assche
2019-09-27 8:56 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 04/25] ibtrs: core: lib functions shared between client and server modules Jack Wang
2019-09-23 23:03 ` Bart Van Assche
2019-09-27 10:13 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 05/25] ibtrs: client: private header with client structs and functions Jack Wang
2019-09-23 23:05 ` Bart Van Assche
2019-09-27 10:18 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 06/25] ibtrs: client: main functionality Jack Wang
2019-09-23 21:51 ` Bart Van Assche
2019-09-25 17:36 ` Danil Kipnis
2019-09-25 18:55 ` Bart Van Assche
2019-09-25 20:50 ` Danil Kipnis
2019-09-25 21:08 ` Bart Van Assche
2019-09-25 21:16 ` Bart Van Assche
2019-09-25 22:53 ` Danil Kipnis
2019-09-25 23:21 ` Bart Van Assche
2019-09-26 9:16 ` Danil Kipnis
2019-06-20 15:03 ` [PATCH v4 07/25] ibtrs: client: statistics functions Jack Wang
2019-09-23 23:15 ` Bart Van Assche
2019-09-27 12:00 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 08/25] ibtrs: client: sysfs interface functions Jack Wang
2019-06-20 15:03 ` [PATCH v4 09/25] ibtrs: server: private header with server structs and functions Jack Wang
2019-09-23 23:21 ` Bart Van Assche
2019-09-27 12:04 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 10/25] ibtrs: server: main functionality Jack Wang
2019-09-23 23:49 ` Bart Van Assche
2019-09-27 15:03 ` Jinpu Wang
2019-09-27 15:11 ` Bart Van Assche
2019-09-27 15:19 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 11/25] ibtrs: server: statistics functions Jack Wang
2019-09-23 23:56 ` Bart Van Assche
2019-10-02 15:15 ` Jinpu Wang
2019-10-02 15:42 ` Leon Romanovsky
2019-10-02 15:45 ` Jinpu Wang
2019-10-02 16:00 ` Leon Romanovsky
2019-06-20 15:03 ` Jack Wang [this message]
2019-09-24 0:00 ` [PATCH v4 12/25] ibtrs: server: sysfs interface functions Bart Van Assche
2019-10-02 15:11 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 13/25] ibtrs: include client and server modules into kernel compilation Jack Wang
2019-06-20 15:03 ` [PATCH v4 14/25] ibtrs: a bit of documentation Jack Wang
2019-06-20 15:03 ` [PATCH v4 15/25] ibnbd: private headers with IBNBD protocol structs and helpers Jack Wang
2019-09-13 22:10 ` Bart Van Assche
2019-09-15 14:30 ` Jinpu Wang
2019-09-16 5:27 ` Leon Romanovsky
2019-09-16 13:45 ` Bart Van Assche
2019-09-17 15:41 ` Leon Romanovsky
2019-09-17 15:52 ` Jinpu Wang
2019-09-16 7:08 ` Danil Kipnis
2019-09-16 14:57 ` Jinpu Wang
2019-09-16 17:25 ` Bart Van Assche
2019-09-17 12:27 ` Jinpu Wang
2019-09-16 15:39 ` Jinpu Wang
2019-09-18 15:26 ` Bart Van Assche
2019-09-18 16:11 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 16/25] ibnbd: client: private header with client structs and functions Jack Wang
2019-09-13 22:25 ` Bart Van Assche
2019-09-17 16:36 ` Jinpu Wang
2019-09-25 23:43 ` Danil Kipnis
2019-09-26 10:00 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 17/25] ibnbd: client: main functionality Jack Wang
2019-09-13 23:46 ` Bart Van Assche
2019-09-16 14:17 ` Danil Kipnis
2019-09-16 16:46 ` Bart Van Assche
2019-09-17 11:39 ` Danil Kipnis
2019-09-18 7:14 ` Danil Kipnis
2019-09-18 15:47 ` Bart Van Assche
2019-09-20 8:29 ` Danil Kipnis
2019-09-25 22:26 ` Danil Kipnis
2019-09-26 9:55 ` Roman Penyaev
2019-09-26 15:01 ` Bart Van Assche
2019-09-27 8:52 ` Roman Penyaev
2019-09-27 9:32 ` Danil Kipnis
2019-09-27 12:18 ` Danil Kipnis
2019-09-27 16:37 ` Bart Van Assche
2019-09-27 16:50 ` Roman Penyaev
2019-09-27 17:16 ` Bart Van Assche
2019-09-17 13:09 ` Jinpu Wang
2019-09-17 16:46 ` Bart Van Assche
2019-09-18 12:02 ` Jinpu Wang
2019-09-18 16:05 ` Jinpu Wang
2019-09-14 0:00 ` Bart Van Assche
2019-06-20 15:03 ` [PATCH v4 18/25] ibnbd: client: sysfs interface functions Jack Wang
2019-09-18 16:28 ` Bart Van Assche
2019-09-19 15:55 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 19/25] ibnbd: server: private header with server structs and functions Jack Wang
2019-06-20 15:03 ` [PATCH v4 20/25] ibnbd: server: main functionality Jack Wang
2019-09-18 17:41 ` Bart Van Assche
2019-09-20 7:36 ` Danil Kipnis
2019-09-20 15:42 ` Bart Van Assche
2019-09-23 15:19 ` Danil Kipnis
2019-06-20 15:03 ` [PATCH v4 21/25] ibnbd: server: functionality for IO submission to file or block dev Jack Wang
2019-09-18 21:46 ` Bart Van Assche
2019-09-26 14:04 ` Jinpu Wang
2019-09-26 15:11 ` Bart Van Assche
2019-09-26 15:25 ` Danil Kipnis
2019-09-26 15:29 ` Bart Van Assche
2019-09-26 15:38 ` Danil Kipnis
2019-09-26 15:42 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 22/25] ibnbd: server: sysfs interface functions Jack Wang
2019-06-20 15:03 ` [PATCH v4 23/25] ibnbd: include client and server modules into kernel compilation Jack Wang
2019-06-20 15:03 ` [PATCH v4 24/25] ibnbd: a bit of documentation Jack Wang
2019-09-13 23:58 ` Bart Van Assche
2019-09-18 12:22 ` Jinpu Wang
2019-06-20 15:03 ` [PATCH v4 25/25] MAINTAINERS: Add maintainer for IBNBD/IBTRS modules Jack Wang
2019-07-09 15:10 ` Leon Romanovsky
2019-07-09 15:18 ` Jinpu Wang
2019-07-09 15:51 ` Leon Romanovsky
2019-09-13 23:56 ` Bart Van Assche
2019-09-19 10:30 ` Jinpu Wang
2019-07-09 9:55 ` [PATCH v4 00/25] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD) Danil Kipnis
2019-07-09 11:00 ` Leon Romanovsky
2019-07-09 11:17 ` Greg KH
2019-07-09 11:57 ` Jinpu Wang
2019-07-09 13:32 ` Leon Romanovsky
2019-07-09 15:39 ` Bart Van Assche
2019-07-09 11:37 ` Jinpu Wang
2019-07-09 12:06 ` Jason Gunthorpe
2019-07-09 13:15 ` Jinpu Wang
2019-07-09 13:19 ` Jason Gunthorpe
2019-07-09 14:17 ` Jinpu Wang
2019-07-09 21:27 ` Sagi Grimberg
2019-07-19 13:12 ` Danil Kipnis
2019-07-10 14:55 ` Danil Kipnis
2019-07-09 12:04 ` Jason Gunthorpe
2019-07-09 19:45 ` Sagi Grimberg
2019-07-10 13:55 ` Jason Gunthorpe
2019-07-10 16:25 ` Sagi Grimberg
2019-07-10 17:25 ` Jason Gunthorpe
2019-07-10 19:11 ` Sagi Grimberg
2019-07-11 7:27 ` Danil Kipnis
2019-07-11 8:54 ` Danil Kipnis
2019-07-12 0:22 ` Sagi Grimberg
2019-07-12 7:57 ` Jinpu Wang
2019-07-12 19:40 ` Sagi Grimberg
2019-07-15 11:21 ` Jinpu Wang
2019-07-12 10:58 ` Danil Kipnis
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