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IB/core: Add legacy driver's user-data

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In this phase, we don't want to change all the drivers to use
flexible driver's specific attributes. Therefore, we add two default
attributes: UHW_IN and UHW_OUT. These attributes are optional in some
methods and they encode the driver specific command data. We add
a function that extract this data and creates the legacy udata over
it.

Driver's data should start from UVERBS_UDATA_DRIVER_DATA_FLAG. This
turns on the first bit of the namespace, indicating this attribute
belongs to the driver's namespace.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Matan Barak
2017-08-03 16:07:04 +03:00
committed by Doug Ledford
parent 64b19e1323
commit d70724f149
3 changed files with 96 additions and 0 deletions
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10
include/uapi/rdma/ib_user_ioctl_verbs.h
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@@ -33,6 +33,11 @@
#ifndef IB_USER_IOCTL_VERBS_H
#define IB_USER_IOCTL_VERBS_H
#include <rdma/rdma_user_ioctl.h>
#define UVERBS_UDATA_DRIVER_DATA_NS 1
#define UVERBS_UDATA_DRIVER_DATA_FLAG (1UL << UVERBS_ID_NS_SHIFT)
enum uverbs_default_objects {
UVERBS_OBJECT_DEVICE, /* No instances of DEVICE are allowed */
UVERBS_OBJECT_PD,
@@ -50,5 +55,10 @@ enum uverbs_default_objects {
UVERBS_OBJECT_LAST,
};
enum {
UVERBS_UHW_IN = UVERBS_UDATA_DRIVER_DATA_FLAG,
UVERBS_UHW_OUT,
};
#endif