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Date: Mon, 7 Jun 2021 11:17:27 +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 02/15] RDMA/core: Replace the ib_port_data hw_stats pointers with a ib_port pointer
From: Jason Gunthorpe <jgg@...dia.com>
It is much saner to store a pointer to the kobject structure that contains
the cannonical stats pointer than to copy the stats pointers into a public
structure.
Future patches will require the sysfs pointer for other purposes.
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
drivers/infiniband/core/core_priv.h | 1 +
drivers/infiniband/core/nldev.c | 8 ++------
drivers/infiniband/core/sysfs.c | 14 +++++++++++---
include/rdma/ib_verbs.h | 3 ++-
4 files changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index 29809dd30041..ec5c2c3db423 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -378,6 +378,7 @@ struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
void ib_free_port_attrs(struct ib_core_device *coredev);
int ib_setup_port_attrs(struct ib_core_device *coredev);
+struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev, u32 port_num);
int rdma_compatdev_set(u8 enable);
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 01316926cef6..e9b4b2cccaa0 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -2066,7 +2066,8 @@ static int stat_get_doit_default_counter(struct sk_buff *skb,
}
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
- if (!rdma_is_port_valid(device, port)) {
+ stats = ib_get_hw_stats_port(device, port);
+ if (!stats) {
ret = -EINVAL;
goto err;
}
@@ -2088,11 +2089,6 @@ static int stat_get_doit_default_counter(struct sk_buff *skb,
goto err_msg;
}
- stats = device->port_data ? device->port_data[port].hw_stats : NULL;
- if (stats == NULL) {
- ret = -EINVAL;
- goto err_msg;
- }
mutex_lock(&stats->lock);
num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index d11ceff2b4e4..b153dee1e0fa 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1031,8 +1031,6 @@ static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
goto err;
port->hw_stats_ag = hsag;
port->hw_stats = stats;
- if (device->port_data)
- device->port_data[port_num].hw_stats = stats;
} else {
struct kobject *kobj = &device->dev.kobj;
ret = sysfs_create_group(kobj, hsag);
@@ -1053,6 +1051,14 @@ static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
kfree(stats);
}
+struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
+ u32 port_num)
+{
+ if (!ibdev->port_data || !rdma_is_port_valid(ibdev, port_num))
+ return NULL;
+ return ibdev->port_data[port_num].sysfs->hw_stats;
+}
+
static int add_port(struct ib_core_device *coredev, int port_num)
{
struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
@@ -1171,6 +1177,8 @@ static int add_port(struct ib_core_device *coredev, int port_num)
setup_hw_stats(device, p, port_num);
list_add_tail(&p->kobj.entry, &coredev->port_list);
+ if (device->port_data && is_full_dev)
+ device->port_data[port_num].sysfs = p;
kobject_uevent(&p->kobj, KOBJ_ADD);
return 0;
@@ -1361,7 +1369,7 @@ void ib_free_port_attrs(struct ib_core_device *coredev)
free_hsag(&port->kobj, port->hw_stats_ag);
kfree(port->hw_stats);
if (device->port_data && is_full_dev)
- device->port_data[port->port_num].hw_stats = NULL;
+ device->port_data[port->port_num].sysfs = NULL;
if (port->pma_table)
sysfs_remove_group(p, port->pma_table);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 849a06441e29..7a4cb7022f91 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -50,6 +50,7 @@ struct ib_uqp_object;
struct ib_usrq_object;
struct ib_uwq_object;
struct rdma_cm_id;
+struct ib_port;
extern struct workqueue_struct *ib_wq;
extern struct workqueue_struct *ib_comp_wq;
@@ -2182,7 +2183,7 @@ struct ib_port_data {
struct net_device __rcu *netdev;
struct hlist_node ndev_hash_link;
struct rdma_port_counter port_counter;
- struct rdma_hw_stats *hw_stats;
+ struct ib_port *sysfs;
};
/* rdma netdev type - specifies protocol type */
--
2.31.1
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