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RDMA/core: Add the core support field to METHOD_GET_CONTEXT 

Add the core support field to METHOD_GET_CONTEXT, this field should
represent capabilities that are not device-specific.

Return support for optional access flags for memory regions. User-space
will use this capability to mask the optional access flags for
unsupporting kernels.

Link: https://lore.kernel.org/r/1578506740-22188-10-git-send-email-yishaih@mellanox.com
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Michael Guralnik 2020-01-08 20:05:39 +02:00 committed by Jason Gunthorpe
parent 2233c6609c
commit 811646998e
3 changed files with 13 additions and 0 deletions
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8
drivers/infiniband/core/uverbs_std_types_device.c
View File

@ -204,6 +204,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_GET_CONTEXT)(
struct uverbs_attr_bundle *attrs)
{
u32 num_comp = attrs->ufile->device->num_comp_vectors;
u64 core_support = IB_UVERBS_CORE_SUPPORT_OPTIONAL_MR_ACCESS;
int ret;
ret = uverbs_copy_to(attrs, UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
@ -211,6 +212,11 @@ static int UVERBS_HANDLER(UVERBS_METHOD_GET_CONTEXT)(
if (IS_UVERBS_COPY_ERR(ret))
return ret;
ret = uverbs_copy_to(attrs, UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
&core_support, sizeof(core_support));
if (IS_UVERBS_COPY_ERR(ret))
return ret;
ret = ib_alloc_ucontext(attrs);
if (ret)
return ret;
@ -227,6 +233,8 @@ DECLARE_UVERBS_NAMED_METHOD(
UVERBS_METHOD_GET_CONTEXT,
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
UVERBS_ATTR_TYPE(u32), UA_OPTIONAL),
UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
UVERBS_ATTR_TYPE(u64), UA_OPTIONAL),
UVERBS_ATTR_UHW());
DECLARE_UVERBS_NAMED_METHOD(

1
include/uapi/rdma/ib_user_ioctl_cmds.h
View File

@ -84,6 +84,7 @@ enum uverbs_attrs_query_port_cmd_attr_ids {
enum uverbs_attrs_get_context_attr_ids {
UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
};
enum uverbs_attrs_create_cq_cmd_attr_ids {

4
include/uapi/rdma/ib_user_ioctl_verbs.h
View File

@ -44,6 +44,10 @@
#define IB_UVERBS_ACCESS_OPTIONAL_FIRST (1 << 20)
#define IB_UVERBS_ACCESS_OPTIONAL_LAST (1 << 29)
enum ib_uverbs_core_support {
IB_UVERBS_CORE_SUPPORT_OPTIONAL_MR_ACCESS = 1 << 0,
};
enum ib_uverbs_access_flags {
IB_UVERBS_ACCESS_LOCAL_WRITE = 1 << 0,
IB_UVERBS_ACCESS_REMOTE_WRITE = 1 << 1,