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Date: Fri, 11 Jun 2021 19:00:28 +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>,
Leon Romanovsky <leonro@...dia.com>,
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 v2 09/15] RDMA/core: Expose the ib port sysfs attribute machinery
From: Jason Gunthorpe <jgg@...dia.com>
Other things outside the core code are creating attributes against the
port. This patch exposes the basic machinery to do this.
The ib_port_attribute type allows creating groups of attributes attatched
to the port and comes with the usual machinery to do this.
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
drivers/infiniband/core/sysfs.c | 217 +++++++++++++++++---------------
include/rdma/ib_sysfs.h | 41 ++++++
2 files changed, 158 insertions(+), 100 deletions(-)
create mode 100644 include/rdma/ib_sysfs.h
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 14b838863b5d..3c5541c39bf6 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -44,24 +44,10 @@
#include <rdma/ib_pma.h>
#include <rdma/ib_cache.h>
#include <rdma/rdma_counter.h>
-
-struct ib_port;
-
-struct port_attribute {
- struct attribute attr;
- ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
- ssize_t (*store)(struct ib_port *, struct port_attribute *,
- const char *buf, size_t count);
-};
-
-#define PORT_ATTR(_name, _mode, _show, _store) \
-struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
-
-#define PORT_ATTR_RO(_name) \
-struct port_attribute port_attr_##_name = __ATTR_RO(_name)
+#include <rdma/ib_sysfs.h>
struct port_table_attribute {
- struct port_attribute attr;
+ struct ib_port_attribute attr;
char name[8];
int index;
__be16 attr_id;
@@ -97,7 +83,7 @@ struct hw_stats_device_attribute {
};
struct hw_stats_port_attribute {
- struct port_attribute attr;
+ struct ib_port_attribute attr;
ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
unsigned int index, unsigned int port_num, char *buf);
ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
@@ -119,29 +105,55 @@ struct hw_stats_port_data {
static ssize_t port_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
- struct port_attribute *port_attr =
- container_of(attr, struct port_attribute, attr);
+ struct ib_port_attribute *port_attr =
+ container_of(attr, struct ib_port_attribute, attr);
struct ib_port *p = container_of(kobj, struct ib_port, kobj);
if (!port_attr->show)
return -EIO;
- return port_attr->show(p, port_attr, buf);
+ return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
}
static ssize_t port_attr_store(struct kobject *kobj,
struct attribute *attr,
const char *buf, size_t count)
{
- struct port_attribute *port_attr =
- container_of(attr, struct port_attribute, attr);
+ struct ib_port_attribute *port_attr =
+ container_of(attr, struct ib_port_attribute, attr);
struct ib_port *p = container_of(kobj, struct ib_port, kobj);
if (!port_attr->store)
return -EIO;
- return port_attr->store(p, port_attr, buf, count);
+ return port_attr->store(p->ibdev, p->port_num, port_attr, buf, count);
}
+int ib_port_sysfs_create_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups)
+{
+ return sysfs_create_groups(&ibdev->port_data[port_num].sysfs->kobj,
+ groups);
+}
+EXPORT_SYMBOL_GPL(ib_port_sysfs_create_groups);
+
+void ib_port_sysfs_remove_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups)
+{
+ return sysfs_remove_groups(&ibdev->port_data[port_num].sysfs->kobj,
+ groups);
+}
+EXPORT_SYMBOL_GPL(ib_port_sysfs_remove_groups);
+
+struct ib_device *ib_port_sysfs_get_ibdev_kobj(struct kobject *kobj,
+ u32 *port_num)
+{
+ struct ib_port *port = container_of(kobj, struct ib_port, kobj);
+
+ *port_num = port->port_num;
+ return port->ibdev;
+}
+EXPORT_SYMBOL(ib_port_sysfs_get_ibdev_kobj);
+
static const struct sysfs_ops port_sysfs_ops = {
.show = port_attr_show,
.store = port_attr_store
@@ -171,25 +183,27 @@ static ssize_t hw_stat_device_store(struct device *dev,
count);
}
-static ssize_t hw_stat_port_show(struct ib_port *port,
- struct port_attribute *attr, char *buf)
+static ssize_t hw_stat_port_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
{
struct hw_stats_port_attribute *stat_attr =
container_of(attr, struct hw_stats_port_attribute, attr);
+ struct ib_port *port = ibdev->port_data[port_num].sysfs;
- return stat_attr->show(port->ibdev, port->hw_stats_data->stats,
+ return stat_attr->show(ibdev, port->hw_stats_data->stats,
stat_attr - port->hw_stats_data->attrs,
port->port_num, buf);
}
-static ssize_t hw_stat_port_store(struct ib_port *port,
- struct port_attribute *attr, const char *buf,
- size_t count)
+static ssize_t hw_stat_port_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr,
+ const char *buf, size_t count)
{
struct hw_stats_port_attribute *stat_attr =
container_of(attr, struct hw_stats_port_attribute, attr);
+ struct ib_port *port = ibdev->port_data[port_num].sysfs;
- return stat_attr->store(port->ibdev, port->hw_stats_data->stats,
+ return stat_attr->store(ibdev, port->hw_stats_data->stats,
stat_attr - port->hw_stats_data->attrs,
port->port_num, buf, count);
}
@@ -197,23 +211,23 @@ static ssize_t hw_stat_port_store(struct ib_port *port,
static ssize_t gid_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
- struct port_attribute *port_attr =
- container_of(attr, struct port_attribute, attr);
+ struct ib_port_attribute *port_attr =
+ container_of(attr, struct ib_port_attribute, attr);
struct ib_port *p = container_of(kobj, struct gid_attr_group,
kobj)->port;
if (!port_attr->show)
return -EIO;
- return port_attr->show(p, port_attr, buf);
+ return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
}
static const struct sysfs_ops gid_attr_sysfs_ops = {
.show = gid_attr_show
};
-static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t state_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
@@ -227,7 +241,7 @@ static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
[IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
};
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
@@ -238,81 +252,80 @@ static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
"UNKNOWN");
}
-static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t lid_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%x\n", attr.lid);
}
-static ssize_t lid_mask_count_show(struct ib_port *p,
- struct port_attribute *unused,
- char *buf)
+static ssize_t lid_mask_count_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "%d\n", attr.lmc);
}
-static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t sm_lid_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%x\n", attr.sm_lid);
}
-static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t sm_sl_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "%d\n", attr.sm_sl);
}
-static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
return sysfs_emit(buf, "0x%08x\n", attr.port_cap_flags);
}
-static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
char *speed = "";
int rate; /* in deci-Gb/sec */
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
@@ -379,14 +392,14 @@ static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
return "<unknown>";
}
-static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t phys_state_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
struct ib_port_attr attr;
ssize_t ret;
- ret = ib_query_port(p->ibdev, p->port_num, &attr);
+ ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
@@ -394,12 +407,12 @@ static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
phys_state_to_str(attr.phys_state));
}
-static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
- char *buf)
+static ssize_t link_layer_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *unused, char *buf)
{
const char *output;
- switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
+ switch (rdma_port_get_link_layer(ibdev, port_num)) {
case IB_LINK_LAYER_INFINIBAND:
output = "InfiniBand";
break;
@@ -414,26 +427,26 @@ static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
return sysfs_emit(buf, "%s\n", output);
}
-static PORT_ATTR_RO(state);
-static PORT_ATTR_RO(lid);
-static PORT_ATTR_RO(lid_mask_count);
-static PORT_ATTR_RO(sm_lid);
-static PORT_ATTR_RO(sm_sl);
-static PORT_ATTR_RO(cap_mask);
-static PORT_ATTR_RO(rate);
-static PORT_ATTR_RO(phys_state);
-static PORT_ATTR_RO(link_layer);
+static IB_PORT_ATTR_RO(state);
+static IB_PORT_ATTR_RO(lid);
+static IB_PORT_ATTR_RO(lid_mask_count);
+static IB_PORT_ATTR_RO(sm_lid);
+static IB_PORT_ATTR_RO(sm_sl);
+static IB_PORT_ATTR_RO(cap_mask);
+static IB_PORT_ATTR_RO(rate);
+static IB_PORT_ATTR_RO(phys_state);
+static IB_PORT_ATTR_RO(link_layer);
static struct attribute *port_default_attrs[] = {
- &port_attr_state.attr,
- &port_attr_lid.attr,
- &port_attr_lid_mask_count.attr,
- &port_attr_sm_lid.attr,
- &port_attr_sm_sl.attr,
- &port_attr_cap_mask.attr,
- &port_attr_rate.attr,
- &port_attr_phys_state.attr,
- &port_attr_link_layer.attr,
+ &ib_port_attr_state.attr,
+ &ib_port_attr_lid.attr,
+ &ib_port_attr_lid_mask_count.attr,
+ &ib_port_attr_sm_lid.attr,
+ &ib_port_attr_sm_sl.attr,
+ &ib_port_attr_cap_mask.attr,
+ &ib_port_attr_rate.attr,
+ &ib_port_attr_phys_state.attr,
+ &ib_port_attr_link_layer.attr,
NULL
};
@@ -457,7 +470,8 @@ static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
}
static ssize_t _show_port_gid_attr(
- struct ib_port *p, struct port_attribute *attr, char *buf,
+ struct ib_device *ibdev, u32 port_num, struct ib_port_attribute *attr,
+ char *buf,
ssize_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
{
struct port_table_attribute *tab_attr =
@@ -465,7 +479,7 @@ static ssize_t _show_port_gid_attr(
const struct ib_gid_attr *gid_attr;
ssize_t ret;
- gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
+ gid_attr = rdma_get_gid_attr(ibdev, port_num, tab_attr->index);
if (IS_ERR(gid_attr))
/* -EINVAL is returned for user space compatibility reasons. */
return -EINVAL;
@@ -475,15 +489,15 @@ static ssize_t _show_port_gid_attr(
return ret;
}
-static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
- char *buf)
+static ssize_t show_port_gid(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
{
struct port_table_attribute *tab_attr =
container_of(attr, struct port_table_attribute, attr);
const struct ib_gid_attr *gid_attr;
int len;
- gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
+ gid_attr = rdma_get_gid_attr(ibdev, port_num, tab_attr->index);
if (IS_ERR(gid_attr)) {
const union ib_gid zgid = {};
@@ -504,28 +518,30 @@ static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
return len;
}
-static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
- struct port_attribute *attr, char *buf)
+static ssize_t show_port_gid_attr_ndev(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr,
+ char *buf)
{
- return _show_port_gid_attr(p, attr, buf, print_ndev);
+ return _show_port_gid_attr(ibdev, port_num, attr, buf, print_ndev);
}
-static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
- struct port_attribute *attr,
+static ssize_t show_port_gid_attr_gid_type(struct ib_device *ibdev,
+ u32 port_num,
+ struct ib_port_attribute *attr,
char *buf)
{
- return _show_port_gid_attr(p, attr, buf, print_gid_type);
+ return _show_port_gid_attr(ibdev, port_num, attr, buf, print_gid_type);
}
-static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
- char *buf)
+static ssize_t show_port_pkey(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
{
struct port_table_attribute *tab_attr =
container_of(attr, struct port_table_attribute, attr);
u16 pkey;
int ret;
- ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
+ ret = ib_query_pkey(ibdev, port_num, tab_attr->index, &pkey);
if (ret)
return ret;
@@ -594,8 +610,8 @@ static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
return ret;
}
-static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
- char *buf)
+static ssize_t show_pma_counter(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
{
struct port_table_attribute *tab_attr =
container_of(attr, struct port_table_attribute, attr);
@@ -605,7 +621,7 @@ static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
u8 data[8];
int len;
- ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
+ ret = get_perf_mad(ibdev, port_num, tab_attr->attr_id, &data,
40 + offset / 8, sizeof(data));
if (ret < 0)
return ret;
@@ -1077,10 +1093,11 @@ struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
return ibdev->port_data[port_num].sysfs->hw_stats_data->stats;
}
-static int alloc_port_table_group(
- const char *name, struct attribute_group *group,
- struct port_table_attribute *attrs, size_t num,
- ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf))
+static int
+alloc_port_table_group(const char *name, struct attribute_group *group,
+ struct port_table_attribute *attrs, size_t num,
+ ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *, char *buf))
{
struct attribute **attr_list;
int i;
diff --git a/include/rdma/ib_sysfs.h b/include/rdma/ib_sysfs.h
new file mode 100644
index 000000000000..f869d0e4fd30
--- /dev/null
+++ b/include/rdma/ib_sysfs.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (c) 2021 Mellanox Technologies Ltd. All rights reserved.
+ */
+#ifndef DEF_RDMA_IB_SYSFS_H
+#define DEF_RDMA_IB_SYSFS_H
+
+#include <linux/sysfs.h>
+
+struct ib_device;
+
+struct ib_port_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf);
+ ssize_t (*store)(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, const char *buf,
+ size_t count);
+};
+
+#define IB_PORT_ATTR_RW(_name) \
+ struct ib_port_attribute ib_port_attr_##_name = __ATTR_RW(_name)
+
+#define IB_PORT_ATTR_ADMIN_RW(_name) \
+ struct ib_port_attribute ib_port_attr_##_name = \
+ __ATTR_RW_MODE(_name, 0600)
+
+#define IB_PORT_ATTR_RO(_name) \
+ struct ib_port_attribute ib_port_attr_##_name = __ATTR_RO(_name)
+
+#define IB_PORT_ATTR_WO(_name) \
+ struct ib_port_attribute ib_port_attr_##_name = __ATTR_WO(_name)
+
+int ib_port_sysfs_create_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups);
+void ib_port_sysfs_remove_groups(struct ib_device *ibdev, u32 port_num,
+ const struct attribute_group **groups);
+struct ib_device *ib_port_sysfs_get_ibdev_kobj(struct kobject *kobj,
+ u32 *port_num);
+
+#endif
--
2.31.1
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