IP_MSFILTER_SIZE
msf_size = IP_MSFILTER_SIZE(copycount);
copy_to_sockptr(optval, msf, IP_MSFILTER_SIZE(0))) {
if (optlen < IP_MSFILTER_SIZE(0))
if (IP_MSFILTER_SIZE(msf->imsf_numsrc) > optlen) {
if (len < IP_MSFILTER_SIZE(0)) {
if (copy_from_sockptr(&msf, optval, IP_MSFILTER_SIZE(0))) {
msf = kmalloc(IP_MSFILTER_SIZE(numsrc), GFP_KERNEL);