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Date: Mon, 7 Jun 2021 11:17:35 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Doug Ledford <dledford@...hat.com>,
Jason Gunthorpe <jgg@...dia.com>
Cc: Greg KH <gregkh@...uxfoundation.org>,
Kees Cook <keescook@...omium.org>,
Nathan Chancellor <nathan@...nel.org>,
Adit Ranadive <aditr@...are.com>,
Ariel Elior <aelior@...vell.com>,
Christian Benvenuti <benve@...co.com>,
clang-built-linux@...glegroups.com,
Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
Devesh Sharma <devesh.sharma@...adcom.com>,
Gal Pressman <galpress@...zon.com>,
linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
Michal Kalderon <mkalderon@...vell.com>,
Mike Marciniszyn <mike.marciniszyn@...nelisnetworks.com>,
Mustafa Ismail <mustafa.ismail@...el.com>,
Naresh Kumar PBS <nareshkumar.pbs@...adcom.com>,
Nelson Escobar <neescoba@...co.com>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Potnuri Bharat Teja <bharat@...lsio.com>,
Selvin Xavier <selvin.xavier@...adcom.com>,
Shiraz Saleem <shiraz.saleem@...el.com>,
VMware PV-Drivers <pv-drivers@...are.com>,
Yishai Hadas <yishaih@...dia.com>,
Zhu Yanjun <zyjzyj2000@...il.com>
Subject: [PATCH rdma-next v1 10/15] RDMA/cm: Use an attribute_group on the ib_port_attribute intead of kobj's
From: Jason Gunthorpe <jgg@...dia.com>
This code is trying to attach a list of counters grouped into 4 groups to
the ib_port sysfs. Instead of creating a bunch of kobjects simply express
everything naturally as an ib_port_attribute and add a single
attribute_groups list.
Remove all the naked kobject manipulations.
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
drivers/infiniband/core/cm.c | 227 ++++++++++++----------------
drivers/infiniband/core/core_priv.h | 8 +-
drivers/infiniband/core/sysfs.c | 50 ++----
3 files changed, 119 insertions(+), 166 deletions(-)
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 80087e678030..1827118c41e3 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -25,6 +25,7 @@
#include <rdma/ib_cache.h>
#include <rdma/ib_cm.h>
+#include <rdma/ib_sysfs.h>
#include "cm_msgs.h"
#include "core_priv.h"
#include "cm_trace.h"
@@ -148,60 +149,17 @@ enum {
CM_COUNTER_GROUPS
};
-static char const counter_group_names[CM_COUNTER_GROUPS]
- [sizeof("cm_rx_duplicates")] = {
- "cm_tx_msgs", "cm_tx_retries",
- "cm_rx_msgs", "cm_rx_duplicates"
-};
-
-struct cm_counter_group {
- struct kobject obj;
- atomic_long_t counter[CM_ATTR_COUNT];
-};
-
struct cm_counter_attribute {
- struct attribute attr;
- int index;
-};
-
-#define CM_COUNTER_ATTR(_name, _index) \
-struct cm_counter_attribute cm_##_name##_counter_attr = { \
- .attr = { .name = __stringify(_name), .mode = 0444 }, \
- .index = _index \
-}
-
-static CM_COUNTER_ATTR(req, CM_REQ_COUNTER);
-static CM_COUNTER_ATTR(mra, CM_MRA_COUNTER);
-static CM_COUNTER_ATTR(rej, CM_REJ_COUNTER);
-static CM_COUNTER_ATTR(rep, CM_REP_COUNTER);
-static CM_COUNTER_ATTR(rtu, CM_RTU_COUNTER);
-static CM_COUNTER_ATTR(dreq, CM_DREQ_COUNTER);
-static CM_COUNTER_ATTR(drep, CM_DREP_COUNTER);
-static CM_COUNTER_ATTR(sidr_req, CM_SIDR_REQ_COUNTER);
-static CM_COUNTER_ATTR(sidr_rep, CM_SIDR_REP_COUNTER);
-static CM_COUNTER_ATTR(lap, CM_LAP_COUNTER);
-static CM_COUNTER_ATTR(apr, CM_APR_COUNTER);
-
-static struct attribute *cm_counter_default_attrs[] = {
- &cm_req_counter_attr.attr,
- &cm_mra_counter_attr.attr,
- &cm_rej_counter_attr.attr,
- &cm_rep_counter_attr.attr,
- &cm_rtu_counter_attr.attr,
- &cm_dreq_counter_attr.attr,
- &cm_drep_counter_attr.attr,
- &cm_sidr_req_counter_attr.attr,
- &cm_sidr_rep_counter_attr.attr,
- &cm_lap_counter_attr.attr,
- &cm_apr_counter_attr.attr,
- NULL
+ struct ib_port_attribute attr;
+ unsigned short group;
+ unsigned short index;
};
struct cm_port {
struct cm_device *cm_dev;
struct ib_mad_agent *mad_agent;
u32 port_num;
- struct cm_counter_group counter_group[CM_COUNTER_GROUPS];
+ atomic_long_t counters[CM_COUNTER_GROUPS][CM_ATTR_COUNT];
};
struct cm_device {
@@ -1968,8 +1926,8 @@ static void cm_dup_req_handler(struct cm_work *work,
struct ib_mad_send_buf *msg = NULL;
int ret;
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_REQ_COUNTER]);
+ atomic_long_inc(
+ &work->port->counters[CM_RECV_DUPLICATES][CM_REQ_COUNTER]);
/* Quick state check to discard duplicate REQs. */
spin_lock_irq(&cm_id_priv->lock);
@@ -2467,8 +2425,8 @@ static void cm_dup_rep_handler(struct cm_work *work)
if (!cm_id_priv)
return;
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_REP_COUNTER]);
+ atomic_long_inc(
+ &work->port->counters[CM_RECV_DUPLICATES][CM_REP_COUNTER]);
ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg);
if (ret)
goto deref;
@@ -2645,8 +2603,8 @@ static int cm_rtu_handler(struct cm_work *work)
if (cm_id_priv->id.state != IB_CM_REP_SENT &&
cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) {
spin_unlock_irq(&cm_id_priv->lock);
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_RTU_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_RTU_COUNTER]);
goto out;
}
cm_id_priv->id.state = IB_CM_ESTABLISHED;
@@ -2850,8 +2808,8 @@ static int cm_dreq_handler(struct cm_work *work)
cpu_to_be32(IBA_GET(CM_DREQ_REMOTE_COMM_ID, dreq_msg)),
cpu_to_be32(IBA_GET(CM_DREQ_LOCAL_COMM_ID, dreq_msg)));
if (!cm_id_priv) {
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_DREQ_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_DREQ_COUNTER]);
cm_issue_drep(work->port, work->mad_recv_wc);
trace_icm_no_priv_err(
IBA_GET(CM_DREQ_LOCAL_COMM_ID, dreq_msg),
@@ -2880,8 +2838,8 @@ static int cm_dreq_handler(struct cm_work *work)
case IB_CM_MRA_REP_RCVD:
break;
case IB_CM_TIMEWAIT:
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_DREQ_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_DREQ_COUNTER]);
msg = cm_alloc_response_msg_no_ah(work->port, work->mad_recv_wc);
if (IS_ERR(msg))
goto unlock;
@@ -2896,8 +2854,8 @@ static int cm_dreq_handler(struct cm_work *work)
cm_free_response_msg(msg);
goto deref;
case IB_CM_DREQ_RCVD:
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_DREQ_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_DREQ_COUNTER]);
goto unlock;
default:
trace_icm_dreq_unknown_err(&cm_id_priv->id);
@@ -3248,17 +3206,17 @@ static int cm_mra_handler(struct cm_work *work)
cm_id_priv->id.lap_state != IB_CM_LAP_SENT ||
ib_modify_mad(cm_id_priv->msg, timeout)) {
if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD)
- atomic_long_inc(&work->port->
- counter_group[CM_RECV_DUPLICATES].
- counter[CM_MRA_COUNTER]);
+ atomic_long_inc(
+ &work->port->counters[CM_RECV_DUPLICATES]
+ [CM_MRA_COUNTER]);
goto out;
}
cm_id_priv->id.lap_state = IB_CM_MRA_LAP_RCVD;
break;
case IB_CM_MRA_REQ_RCVD:
case IB_CM_MRA_REP_RCVD:
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_MRA_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_MRA_COUNTER]);
fallthrough;
default:
trace_icm_mra_unknown_err(&cm_id_priv->id);
@@ -3384,8 +3342,8 @@ static int cm_lap_handler(struct cm_work *work)
case IB_CM_LAP_IDLE:
break;
case IB_CM_MRA_LAP_SENT:
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_LAP_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_LAP_COUNTER]);
msg = cm_alloc_response_msg_no_ah(work->port, work->mad_recv_wc);
if (IS_ERR(msg))
goto unlock;
@@ -3402,8 +3360,8 @@ static int cm_lap_handler(struct cm_work *work)
cm_free_response_msg(msg);
goto deref;
case IB_CM_LAP_RCVD:
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_LAP_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_LAP_COUNTER]);
goto unlock;
default:
goto unlock;
@@ -3622,8 +3580,8 @@ static int cm_sidr_req_handler(struct cm_work *work)
listen_cm_id_priv = cm_insert_remote_sidr(cm_id_priv);
if (listen_cm_id_priv) {
spin_unlock_irq(&cm.lock);
- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
- counter[CM_SIDR_REQ_COUNTER]);
+ atomic_long_inc(&work->port->counters[CM_RECV_DUPLICATES]
+ [CM_SIDR_REQ_COUNTER]);
goto out; /* Duplicate message. */
}
cm_id_priv->id.state = IB_CM_SIDR_REQ_RCVD;
@@ -3872,12 +3830,10 @@ static void cm_send_handler(struct ib_mad_agent *mad_agent,
if (!cm_id_priv && (attr_index != CM_REJ_COUNTER))
msg->retries = 1;
- atomic_long_add(1 + msg->retries,
- &port->counter_group[CM_XMIT].counter[attr_index]);
+ atomic_long_add(1 + msg->retries, &port->counters[CM_XMIT][attr_index]);
if (msg->retries)
atomic_long_add(msg->retries,
- &port->counter_group[CM_XMIT_RETRIES].
- counter[attr_index]);
+ &port->counters[CM_XMIT_RETRIES][attr_index]);
if (cm_id_priv)
cm_process_send_error(cm_id_priv, msg, state,
@@ -4098,8 +4054,7 @@ static void cm_recv_handler(struct ib_mad_agent *mad_agent,
}
attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id);
- atomic_long_inc(&port->counter_group[CM_RECV].
- counter[attr_id - CM_ATTR_ID_OFFSET]);
+ atomic_long_inc(&port->counters[CM_RECV][attr_id - CM_ATTR_ID_OFFSET]);
work = kmalloc(struct_size(work, path, paths), GFP_KERNEL);
if (!work) {
@@ -4301,59 +4256,74 @@ int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
}
EXPORT_SYMBOL(ib_cm_init_qp_attr);
-static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr,
- char *buf)
+static ssize_t cm_show_counter(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
{
- struct cm_counter_group *group;
- struct cm_counter_attribute *cm_attr;
+ struct cm_counter_attribute *cm_attr =
+ container_of(attr, struct cm_counter_attribute, attr);
+ struct cm_device *cm_dev = ib_get_client_data(ibdev, &cm_client);
- group = container_of(obj, struct cm_counter_group, obj);
- cm_attr = container_of(attr, struct cm_counter_attribute, attr);
+ if (WARN_ON(!cm_dev))
+ return -EINVAL;
- return sysfs_emit(buf, "%ld\n",
- atomic_long_read(&group->counter[cm_attr->index]));
+ return sysfs_emit(
+ buf, "%ld\n",
+ atomic_long_read(
+ &cm_dev->port[port_num - 1]
+ ->counters[cm_attr->group][cm_attr->index]));
}
-static const struct sysfs_ops cm_counter_ops = {
- .show = cm_show_counter
-};
-
-static struct kobj_type cm_counter_obj_type = {
- .sysfs_ops = &cm_counter_ops,
- .default_attrs = cm_counter_default_attrs
-};
-
-static int cm_create_port_fs(struct cm_port *port)
-{
- int i, ret;
-
- for (i = 0; i < CM_COUNTER_GROUPS; i++) {
- ret = ib_port_register_module_stat(port->cm_dev->ib_device,
- port->port_num,
- &port->counter_group[i].obj,
- &cm_counter_obj_type,
- counter_group_names[i]);
- if (ret)
- goto error;
+#define CM_COUNTER_ATTR(_name, _group, _index) \
+ { \
+ .attr = __ATTR(_name, 0444, cm_show_counter, NULL), \
+ .group = _group, .index = _index \
}
- return 0;
-
-error:
- while (i--)
- ib_port_unregister_module_stat(&port->counter_group[i].obj);
- return ret;
-
-}
-
-static void cm_remove_port_fs(struct cm_port *port)
-{
- int i;
-
- for (i = 0; i < CM_COUNTER_GROUPS; i++)
- ib_port_unregister_module_stat(&port->counter_group[i].obj);
+#define CM_COUNTER_GROUP(_group, _name) \
+ static struct cm_counter_attribute cm_counter_attr_##_group[] = { \
+ CM_COUNTER_ATTR(req, _group, CM_REQ_COUNTER), \
+ CM_COUNTER_ATTR(mra, _group, CM_MRA_COUNTER), \
+ CM_COUNTER_ATTR(rej, _group, CM_REJ_COUNTER), \
+ CM_COUNTER_ATTR(rep, _group, CM_REP_COUNTER), \
+ CM_COUNTER_ATTR(rtu, _group, CM_RTU_COUNTER), \
+ CM_COUNTER_ATTR(dreq, _group, CM_DREQ_COUNTER), \
+ CM_COUNTER_ATTR(drep, _group, CM_DREP_COUNTER), \
+ CM_COUNTER_ATTR(sidr_req, _group, CM_SIDR_REQ_COUNTER), \
+ CM_COUNTER_ATTR(sidr_rep, _group, CM_SIDR_REP_COUNTER), \
+ CM_COUNTER_ATTR(lap, _group, CM_LAP_COUNTER), \
+ CM_COUNTER_ATTR(apr, _group, CM_APR_COUNTER), \
+ }; \
+ static struct attribute *cm_counter_attrs_##_group[] = { \
+ &cm_counter_attr_##_group[0].attr.attr, \
+ &cm_counter_attr_##_group[1].attr.attr, \
+ &cm_counter_attr_##_group[2].attr.attr, \
+ &cm_counter_attr_##_group[3].attr.attr, \
+ &cm_counter_attr_##_group[4].attr.attr, \
+ &cm_counter_attr_##_group[5].attr.attr, \
+ &cm_counter_attr_##_group[6].attr.attr, \
+ &cm_counter_attr_##_group[7].attr.attr, \
+ &cm_counter_attr_##_group[8].attr.attr, \
+ &cm_counter_attr_##_group[9].attr.attr, \
+ &cm_counter_attr_##_group[10].attr.attr, \
+ NULL, \
+ }; \
+ static const struct attribute_group cm_counter_group_##_group = { \
+ .name = _name, \
+ .attrs = cm_counter_attrs_##_group, \
+ };
-}
+CM_COUNTER_GROUP(CM_XMIT, "cm_tx_msgs")
+CM_COUNTER_GROUP(CM_XMIT_RETRIES, "cm_tx_retries")
+CM_COUNTER_GROUP(CM_RECV, "cm_rx_msgs")
+CM_COUNTER_GROUP(CM_RECV_DUPLICATES, "cm_rx_duplicates")
+
+static const struct attribute_group *cm_counter_groups[] = {
+ &cm_counter_group_CM_XMIT,
+ &cm_counter_group_CM_XMIT_RETRIES,
+ &cm_counter_group_CM_RECV,
+ &cm_counter_group_CM_RECV_DUPLICATES,
+ NULL,
+};
static int cm_add_one(struct ib_device *ib_device)
{
@@ -4382,6 +4352,8 @@ static int cm_add_one(struct ib_device *ib_device)
cm_dev->ack_delay = ib_device->attrs.local_ca_ack_delay;
cm_dev->going_down = 0;
+ ib_set_client_data(ib_device, &cm_client, cm_dev);
+
set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
rdma_for_each_port (ib_device, i) {
if (!rdma_cap_ib_cm(ib_device, i))
@@ -4397,7 +4369,8 @@ static int cm_add_one(struct ib_device *ib_device)
port->cm_dev = cm_dev;
port->port_num = i;
- ret = cm_create_port_fs(port);
+ ret = ib_port_register_client_groups(ib_device, i,
+ cm_counter_groups);
if (ret)
goto error1;
@@ -4426,8 +4399,6 @@ static int cm_add_one(struct ib_device *ib_device)
goto free;
}
- ib_set_client_data(ib_device, &cm_client, cm_dev);
-
write_lock_irqsave(&cm.device_lock, flags);
list_add_tail(&cm_dev->list, &cm.device_list);
write_unlock_irqrestore(&cm.device_lock, flags);
@@ -4436,7 +4407,7 @@ static int cm_add_one(struct ib_device *ib_device)
error3:
ib_unregister_mad_agent(port->mad_agent);
error2:
- cm_remove_port_fs(port);
+ ib_port_unregister_client_groups(ib_device, i, cm_counter_groups);
error1:
port_modify.set_port_cap_mask = 0;
port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
@@ -4447,7 +4418,8 @@ static int cm_add_one(struct ib_device *ib_device)
port = cm_dev->port[i-1];
ib_modify_port(ib_device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
- cm_remove_port_fs(port);
+ ib_port_unregister_client_groups(ib_device, i,
+ cm_counter_groups);
}
free:
cm_device_put(cm_dev);
@@ -4495,7 +4467,8 @@ static void cm_remove_one(struct ib_device *ib_device, void *client_data)
port->mad_agent = NULL;
spin_unlock(&cm_dev->mad_agent_lock);
ib_unregister_mad_agent(mad_agent);
- cm_remove_port_fs(port);
+ ib_port_unregister_client_groups(ib_device, i,
+ cm_counter_groups);
}
cm_device_put(cm_dev);
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index 6066c4b39876..78782cce47a1 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -382,10 +382,10 @@ int ib_setup_device_attrs(struct ib_device *ibdev);
int rdma_compatdev_set(u8 enable);
-int ib_port_register_module_stat(struct ib_device *device, u32 port_num,
- struct kobject *kobj, struct kobj_type *ktype,
- const char *name);
-void ib_port_unregister_module_stat(struct kobject *kobj);
+int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups);
+void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups);
int ib_device_set_netns_put(struct sk_buff *skb,
struct ib_device *dev, u32 ns_fd);
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 3c5541c39bf6..e550a7eb37f6 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1448,46 +1448,26 @@ int ib_setup_port_attrs(struct ib_core_device *coredev)
}
/**
- * ib_port_register_module_stat - add module counters under relevant port
- * of IB device.
+ * ib_port_register_client_groups - Add an ib_client's attributes to the port
*
- * @device: IB device to add counters
+ * @ibdev: IB device to add counters
* @port_num: valid port number
- * @kobj: pointer to the kobject to initialize
- * @ktype: pointer to the ktype for this kobject.
- * @name: the name of the kobject
+ * @groups: Group list of attributes
+ *
+ * Do not use. Only for legacy sysfs compatibility.
*/
-int ib_port_register_module_stat(struct ib_device *device, u32 port_num,
- struct kobject *kobj, struct kobj_type *ktype,
- const char *name)
+int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups)
{
- struct kobject *p, *t;
- int ret;
-
- list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
- struct ib_port *port = container_of(p, struct ib_port, kobj);
-
- if (port->port_num != port_num)
- continue;
-
- ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
- name);
- if (ret) {
- kobject_put(kobj);
- return ret;
- }
- }
-
- return 0;
+ return sysfs_create_groups(&ibdev->port_data[port_num].sysfs->kobj,
+ groups);
}
-EXPORT_SYMBOL(ib_port_register_module_stat);
+EXPORT_SYMBOL(ib_port_register_client_groups);
-/**
- * ib_port_unregister_module_stat - release module counters
- * @kobj: pointer to the kobject to release
- */
-void ib_port_unregister_module_stat(struct kobject *kobj)
+void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups)
{
- kobject_put(kobj);
+ return sysfs_remove_groups(&ibdev->port_data[port_num].sysfs->kobj,
+ groups);
}
-EXPORT_SYMBOL(ib_port_unregister_module_stat);
+EXPORT_SYMBOL(ib_port_unregister_client_groups);
--
2.31.1
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