masklen           293 net/if.c       	int namelen, masklen;
masklen           307 net/if.c       	masklen = _offsetof(struct sockaddr_dl, sdl_data[0]) + namelen;
masklen           308 net/if.c       	socksize = masklen + ifp->if_addrlen;
masklen           332 net/if.c       	sdl->sdl_len = masklen;