From: Parav Pandit <parav@xxxxxxxxxxxx>
When rdma device is renamed, also rename compat devices in non
init_net namespaces.
Signed-off-by: Parav Pandit <parav@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/compat_sysfs.c | 33 ++++++++++++++++++++++++++
drivers/infiniband/core/core_priv.h | 1 +
drivers/infiniband/core/device.c | 1 +
3 files changed, 35 insertions(+)
diff --git a/drivers/infiniband/core/compat_sysfs.c b/drivers/infiniband/core/compat_sysfs.c
index 6fa330678063..305a898bf97a 100644
--- a/drivers/infiniband/core/compat_sysfs.c
+++ b/drivers/infiniband/core/compat_sysfs.c
@@ -123,6 +123,39 @@ void rdma_compatdev_remove(struct ib_device *device)
up_read(&net_rwsem);
}
+void rdma_compatdev_rename(const struct ib_device *device)
+{
+ struct rdma_compatdev_net *rdma_net;
+ struct ib_compat_device *cur;
+ struct net *net;
+ int ret;
+
+ /* Hold net_rwsem while adding compat dev entries to synchronize with
+ * _exit_net()/_init_net.
+ */
+ down_read(&net_rwsem);
+ for_each_net(net) {
+ rdma_net = net_generic(net, rdma_compatdev_net_id);
+ down_write(&rdma_net->compat_rwsem);
+ list_for_each_entry(cur, &rdma_net->compatdev_list, list) {
+ if (device != rdma_device_to_ibdev(&cur->coredev.dev))
+ continue;
+
+ /* Found the matching compat device, rename */
+ ret = device_rename(&cur->coredev.dev,
+ dev_name(&device->dev));
+ if (ret) {
+ dev_warn(&cur->coredev.dev,
+ "Fail to rename to new name %s\n",
+ dev_name(&device->dev));
+ }
+ break;
+ }
+ up_write(&rdma_net->compat_rwsem);
+ }
+ up_read(&net_rwsem);
+}
+
static __net_init int rdma_compatdev_init_net(struct net *net)
{
struct rdma_compatdev_net *rdma_net =
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index ea04926f6b0c..b586a7ff3275 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -334,4 +334,5 @@ void __exit rdma_compat_dev_cleanup(void);
void rdma_compatdev_add(struct ib_device *device);
void rdma_compatdev_remove(struct ib_device *device);
+void rdma_compatdev_rename(const struct ib_device *device);
#endif /* _CORE_PRIV_H */
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 43f47eb9006b..48cd293636f7 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -204,6 +204,7 @@ int ib_device_rename(struct ib_device *ibdev, const char *name)
if (ret)
goto out;
strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX);
+ rdma_compatdev_rename(ibdev);
out:
mutex_unlock(&ib_device_mutex);
return ret;
--
2.19.1
