github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-13 00:28:54 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

RDMA/core: Add rdma_udata_to_dev()

Browse Source 
Get an ib_device out of a udata so it can be used for debug prints.

Link: https://patch.msgid.link/r/2-v3-bd56dd443069+49-bnxt_re_uapi_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2026-03-03 15:49:59 -04:00
parent 38a6e5579d
commit b51caeb24a
2 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/infiniband/core/ib_core_uverbs.c
View File

@ -389,3 +389,30 @@ int rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext,
U32_MAX);
}
EXPORT_SYMBOL(rdma_user_mmap_entry_insert);
/**
* rdma_udata_to_dev - Get a ib_device from a udata
* @udata: The system calls ib_udata struct
*
* The struct ib_device that is handling the uverbs call. Must not be called if
* udata is NULL. The result can be NULL.
*/
struct ib_device *rdma_udata_to_dev(struct ib_udata *udata)
{
struct uverbs_attr_bundle *bundle =
rdma_udata_to_uverbs_attr_bundle(udata);
lockdep_assert_held(&bundle->ufile->device->disassociate_srcu);
if (bundle->context)
return bundle->context->device;
/*
* If the context hasn't been created yet use the ufile's dev, but it
* might be NULL if we are racing with disassociate.
*/
return srcu_dereference(bundle->ufile->device->ib_dev,
&bundle->ufile->device->disassociate_srcu);
}
EXPORT_SYMBOL(rdma_udata_to_dev);

2
include/rdma/uverbs_ioctl.h
View File

@ -667,6 +667,8 @@ rdma_udata_to_uverbs_attr_bundle(struct ib_udata *udata)
(udata ? container_of(rdma_udata_to_uverbs_attr_bundle(udata)->context, \
drv_dev_struct, member) : (drv_dev_struct *)NULL)
struct ib_device *rdma_udata_to_dev(struct ib_udata *udata);
#define IS_UVERBS_COPY_ERR(_ret) ((_ret) && (_ret) != -ENOENT)
static inline const struct uverbs_attr *uverbs_attr_get(const struct uverbs_attr_bundle *attrs_bundle,