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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 /include/rdma | |
| 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 'include/rdma')
| -rw-r--r-- | include/rdma/uverbs_ioctl.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h index 23bb404aba12..9d45a5b20316 100644 --- a/include/rdma/uverbs_ioctl.h +++ b/include/rdma/uverbs_ioctl.h @@ -24,6 +24,7 @@ enum uverbs_attr_type { UVERBS_ATTR_TYPE_PTR_OUT, UVERBS_ATTR_TYPE_IDR, UVERBS_ATTR_TYPE_FD, + UVERBS_ATTR_TYPE_RAW_FD, UVERBS_ATTR_TYPE_ENUM_IN, UVERBS_ATTR_TYPE_IDRS_ARRAY, }; @@ -521,6 +522,11 @@ struct uapi_definition { .u.obj.access = _access, \ __VA_ARGS__ } }) +#define UVERBS_ATTR_RAW_FD(_attr_id, ...) \ + (&(const struct uverbs_attr_def){ \ + .id = (_attr_id), \ + .attr = { .type = UVERBS_ATTR_TYPE_RAW_FD, __VA_ARGS__ } }) + #define UVERBS_ATTR_PTR_IN(_attr_id, _type, ...) \ (&(const struct uverbs_attr_def){ \ .id = _attr_id, \ @@ -999,4 +1005,11 @@ _uverbs_get_const_unsigned(u64 *to, uverbs_get_const_default_unsigned(_to, _attrs_bundle, _idx, \ _default)) +static inline int +uverbs_get_raw_fd(int *to, const struct uverbs_attr_bundle *attrs_bundle, + size_t idx) +{ + return uverbs_get_const_signed(to, attrs_bundle, idx); +} + #endif |