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ibcore: Fix unable to change lifespan entry for hw_counters.

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This patch fixes the case where 'lifespan' entry of the hw_counters
is not writable. Currently write callback is not exposed for for
the hw_counters sysfs operation. Due to this, modifying lifespan
value results into permission denied error in below example.

echo 10 > /sys/class/infiniband/mlx5_0/ports/1/hw_counters/lifespan
-bash: /sys/class/infiniband/mlx5_0/ports/1/hw_counters/lifespan:
Permission denied

This patch adds the hook to modify any attribute which implements
store() operation.

Linux commit:
79c4d80b43b8e43684894574a508a871f0c196bf

MFC after:	1 week
Reviewed by:	kib
Sponsored by:	Mellanox Technologies // NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2021-06-16 15:01:39 +02:00
parent 12a913d207
commit d7d833e20b
1 changed files with 15 additions and 1 deletions
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16
sys/ofed/drivers/infiniband/core/ib_sysfs.c
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@ -114,8 +114,22 @@ static ssize_t port_attr_show(struct kobject *kobj,
return port_attr->show(p, 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 *p = container_of(kobj, struct ib_port, kobj);
if (!port_attr->store)
return -EIO;
return port_attr->store(p, port_attr, buf, count);
}
static const struct sysfs_ops port_sysfs_ops = {
.show = port_attr_show
.show = port_attr_show,
.store = port_attr_store
};
static ssize_t gid_attr_show(struct kobject *kobj,