sadb_x_counter
struct sadb_x_counter *sa_counter;
struct sadb_x_counter *scnt = (struct sadb_x_counter *)ext;
sizeof(struct sadb_x_counter);
struct sadb_x_counter *scnt = (struct sadb_x_counter *)*p;
scnt->sadb_x_counter_len = sizeof(struct sadb_x_counter) /
*p += sizeof(struct sadb_x_counter);
if (i != sizeof(struct sadb_x_counter)) {