···174174175175/* Connection tracking may drop packets, but never alters them, so176176 make it the first hook. */177177-static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = {177177+static const struct nf_hook_ops ipv4_conntrack_ops[] = {178178 {179179 .hook = ipv4_conntrack_in,180180 .pf = NFPROTO_IPV4,