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| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-09-01 11:20:54 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-09-27 10:15:24 -0300 |
| commit | 015bda8abd3a6a77656e60b36d499c43a2c0f0a1 (patch) | |
| tree | 0b84ec5a40acac9a9866c88cbf132ef41560c175 /drivers/infiniband/core | |
| parent | 4bf207d7a54d49637da94dbc00d2c025b74764d1 (diff) | |
| download | linux-015bda8abd3a6a77656e60b36d499c43a2c0f0a1.tar.gz | |
RDMA/core: Add UVERBS_ATTR_RAW_FD
This uses the same passing protocol as UVERBS_ATTR_FD (eg len = 0 data_s64
= fd), except that the FD is not required to be a uverbs object and the
core code does not covert the FD to an object handle automatically.
Access to the int fd is provided by uverbs_get_raw_fd().
Link: https://lore.kernel.org/r/2-v1-bd147097458e+ede-umem_dmabuf_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/uverbs_ioctl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_ioctl.c b/drivers/infiniband/core/uverbs_ioctl.c index 990f0724acc6..d9799706c58e 100644 --- a/drivers/infiniband/core/uverbs_ioctl.c +++ b/drivers/infiniband/core/uverbs_ioctl.c @@ -337,6 +337,14 @@ static int uverbs_process_attr(struct bundle_priv *pbundle, break; + case UVERBS_ATTR_TYPE_RAW_FD: + if (uattr->attr_data.reserved || uattr->len != 0 || + uattr->data_s64 < INT_MIN || uattr->data_s64 > INT_MAX) + return -EINVAL; + /* _uverbs_get_const_signed() is the accessor */ + e->ptr_attr.data = uattr->data_s64; + break; + case UVERBS_ATTR_TYPE_IDRS_ARRAY: return uverbs_process_idrs_array(pbundle, attr_uapi, &e->objs_arr_attr, uattr, |