1 /* SPDX-License-Identifier: MIT */ 2 #ifndef __NVIF_UNPACK_H__ 3 #define __NVIF_UNPACK_H__ 4 5 #define nvif_unvers(r,d,s,m) ({ \ 6 void **_data = (d); __u32 *_size = (s); int _ret = (r); \ 7 if (_ret == -ENOSYS && *_size == sizeof(m)) { \ 8 *_data = NULL; \ 9 *_size = _ret = 0; \ 10 } \ 11 _ret; \ 12 }) 13 14 #define nvif_unpack(r,d,s,m,vl,vh,x) ({ \ 15 void **_data = (d); __u32 *_size = (s); \ 16 int _ret = (r), _vl = (vl), _vh = (vh); \ 17 if (_ret == -ENOSYS && *_size >= sizeof(m) && \ 18 (m).version >= _vl && (m).version <= _vh) { \ 19 *_data = (__u8 *)*_data + sizeof(m); \ 20 *_size = *_size - sizeof(m); \ 21 if (_ret = 0, !(x)) { \ 22 _ret = *_size ? -E2BIG : 0; \ 23 *_data = NULL; \ 24 *_size = 0; \ 25 } \ 26 } \ 27 _ret; \ 28 }) 29 #endif 30