- b->auth_iovec[0].iov_base = (void*) auth_prefix;
- b->auth_iovec[0].iov_len = 1 + strlen(auth_prefix + 1);
- b->auth_iovec[1].iov_base = (void*) b->auth_buffer;
- b->auth_iovec[1].iov_len = l * 2;
- b->auth_iovec[2].iov_base = (void*) auth_suffix;
- b->auth_iovec[2].iov_len = strlen(auth_suffix);
+ b->auth_iovec[0] = IOVEC_MAKE((void*) auth_prefix, 1 + strlen(auth_prefix + 1));
+ b->auth_iovec[1] = IOVEC_MAKE(b->auth_buffer, l * 2);
+ b->auth_iovec[2] = IOVEC_MAKE_STRING(auth_suffix);