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[IB] uverbs: Add device-specific ABI version attribute

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Add abi_version attribute to uverbs class devices to allow for
ABI versioning of device-specific interfaces.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier
2005-09-29 14:17:48 -07:00
parent eb9d3cd5ce
commit 274c089163
4 changed files with 20 additions and 0 deletions
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11
drivers/infiniband/core/uverbs_main.c
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@@ -598,6 +598,15 @@ static ssize_t show_ibdev(struct class_device *class_dev, char *buf)
}
static CLASS_DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
static ssize_t show_dev_abi_version(struct class_device *class_dev, char *buf)
{
struct ib_uverbs_device *dev =
container_of(class_dev, struct ib_uverbs_device, class_dev);
return sprintf(buf, "%d\n", dev->ib_dev->uverbs_abi_ver);
}
static CLASS_DEVICE_ATTR(abi_version, S_IRUGO, show_dev_abi_version, NULL);
static void ib_uverbs_release_class_dev(struct class_device *class_dev)
{
struct ib_uverbs_device *dev =
@@ -662,6 +671,8 @@ static void ib_uverbs_add_one(struct ib_device *device)
if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_ibdev))
goto err_class;
if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_abi_version))
goto err_class;
ib_set_client_data(device, &uverbs_client, uverbs_dev);