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RDMA/core: Pass the net namespace to the device name lookups

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Prepare for per-netns RDMA device names by passing the target net
namespace through the name lookup and allocation helpers. Keep current
global uniqueness behaviour.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260716132316.1495242-2-jiri@resnulli.us
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Jiri Pirko 2026-07-16 15:23:02 +02:00 committed by Leon Romanovsky
parent aac287f4f1
commit 8d01029384
1 changed files with 18 additions and 8 deletions
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26
drivers/infiniband/core/device.c
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@ -351,7 +351,8 @@ void ib_device_put(struct ib_device *device)
}
EXPORT_SYMBOL(ib_device_put);
static struct ib_device *__ib_device_get_by_name(const char *name)
static struct ib_device *__ib_device_get_by_name(const char *name,
const struct net *net)
{
struct ib_device *device;
unsigned long index;
@ -395,7 +396,7 @@ int ib_device_rename(struct ib_device *ibdev, const char *name)
return 0;
}
if (__ib_device_get_by_name(name)) {
if (__ib_device_get_by_name(name, rdma_dev_net(ibdev))) {
up_write(&devices_rwsem);
return -EEXIST;
}
@ -435,7 +436,8 @@ int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim)
return 0;
}
static int alloc_name(struct ib_device *ibdev, const char *name)
/* Pick a free index for the '%d' style @name pattern. */
static int alloc_name_id(struct net *net, const char *name)
{
struct ib_device *device;
unsigned long index;
@ -462,15 +464,22 @@ static int alloc_name(struct ib_device *ibdev, const char *name)
}
rc = ida_alloc(&inuse, GFP_KERNEL);
if (rc < 0)
goto out;
rc = dev_set_name(&ibdev->dev, name, rc);
out:
ida_destroy(&inuse);
return rc;
}
static int alloc_name(struct ib_device *ibdev, const char *name)
{
int id;
id = alloc_name_id(rdma_dev_net(ibdev), name);
if (id < 0)
return id;
return dev_set_name(&ibdev->dev, name, id);
}
static void ib_device_release(struct device *device)
{
struct ib_device *dev = container_of(device, struct ib_device, dev);
@ -1223,7 +1232,8 @@ static int assign_name(struct ib_device *device, const char *name)
if (ret)
goto out;
if (__ib_device_get_by_name(dev_name(&device->dev))) {
if (__ib_device_get_by_name(dev_name(&device->dev),
rdma_dev_net(device))) {
ret = -ENFILE;
goto out;
}