tcf_csum
#define to_tcf_csum(a) ((struct tcf_csum *)a)
struct tcf_csum *p;
struct tcf_csum *p = to_tcf_csum(a);
const struct tcf_csum *p = to_tcf_csum(a);
struct tcf_csum *p = to_tcf_csum(a);
.size = sizeof(struct tcf_csum),