diff options
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index aae85019abde..798aec816970 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -341,57 +341,64 @@ static inline void bpf_long_memcpy(void *dst, const void *src, u32 size) } /* copy everything but bpf_spin_lock, bpf_timer, and kptrs. There could be one of each. */ -static inline void __copy_map_value(struct bpf_map *map, void *dst, void *src, bool long_memcpy) +static inline void bpf_obj_memcpy(struct btf_field_offs *foffs, + void *dst, void *src, u32 size, + bool long_memcpy) { u32 curr_off = 0; int i; - if (likely(!map->field_offs)) { + if (likely(!foffs)) { if (long_memcpy) - bpf_long_memcpy(dst, src, round_up(map->value_size, 8)); + bpf_long_memcpy(dst, src, round_up(size, 8)); else - memcpy(dst, src, map->value_size); + memcpy(dst, src, size); return; } - for (i = 0; i < map->field_offs->cnt; i++) { - u32 next_off = map->field_offs->field_off[i]; + for (i = 0; i < foffs->cnt; i++) { + u32 next_off = foffs->field_off[i]; u32 sz = next_off - curr_off; memcpy(dst + curr_off, src + curr_off, sz); - curr_off += map->field_offs->field_sz[i]; + curr_off += foffs->field_sz[i]; } - memcpy(dst + curr_off, src + curr_off, map->value_size - curr_off); + memcpy(dst + curr_off, src + curr_off, size - curr_off); } static inline void copy_map_value(struct bpf_map *map, void *dst, void *src) { - __copy_map_value(map, dst, src, false); + bpf_obj_memcpy(map->field_offs, dst, src, map->value_size, false); } static inline void copy_map_value_long(struct bpf_map *map, void *dst, void *src) { - __copy_map_value(map, dst, src, true); + bpf_obj_memcpy(map->field_offs, dst, src, map->value_size, true); } -static inline void zero_map_value(struct bpf_map *map, void *dst) +static inline void bpf_obj_memzero(struct btf_field_offs *foffs, void *dst, u32 size) { u32 curr_off = 0; int i; - if (likely(!map->field_offs)) { - memset(dst, 0, map->value_size); + if (likely(!foffs)) { + memset(dst, 0, size); return; } - for (i = 0; i < map->field_offs->cnt; i++) { - u32 next_off = map->field_offs->field_off[i]; + for (i = 0; i < foffs->cnt; i++) { + u32 next_off = foffs->field_off[i]; u32 sz = next_off - curr_off; memset(dst + curr_off, 0, sz); - curr_off += map->field_offs->field_sz[i]; + curr_off += foffs->field_sz[i]; } - memset(dst + curr_off, 0, map->value_size - curr_off); + memset(dst + curr_off, 0, size - curr_off); +} + +static inline void zero_map_value(struct bpf_map *map, void *dst) +{ + bpf_obj_memzero(map->field_offs, dst, map->value_size); } void copy_map_value_locked(struct bpf_map *map, void *dst, void *src, |