diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/can/core.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/can/core.h b/include/linux/can/core.h index 708c10d3417a..8339071ab08b 100644 --- a/include/linux/can/core.h +++ b/include/linux/can/core.h @@ -41,6 +41,14 @@ struct can_proto { struct proto *prot; }; +/* required_size + * macro to find the minimum size of a struct + * that includes a requested member + */ +#define CAN_REQUIRED_SIZE(struct_type, member) \ + (offsetof(typeof(struct_type), member) + \ + sizeof(((typeof(struct_type) *)(NULL))->member)) + /* function prototypes for the CAN networklayer core (af_can.c) */ extern int can_proto_register(const struct can_proto *cp); |