408 	if (!idev || idev->cnf.disable_ipv6) {  in ndisc_allow_add()
454 	tclass = idev ? READ_ONCE(idev->cnf.ndisc_tclass) : 0;  in ip6_nd_hdr()
542 		inc_opt |= READ_ONCE(ifp->idev->cnf.force_tllao);  in ndisc_send_na()
598 			      /*router=*/ !!idev->cnf.forwarding,  in ndisc_send_unsol_na()
910 		    (READ_ONCE(idev->cnf.forwarding) &&  in ndisc_recv_ns()
912 		      READ_ONCE(idev->cnf.proxy_ndp)) &&  in ndisc_recv_ns()
937 		is_router = READ_ONCE(idev->cnf.forwarding);  in ndisc_recv_ns()
981 	switch (READ_ONCE(idev->cnf.accept_untracked_na)) {  in accept_untracked_na()
1032 	    READ_ONCE(idev->cnf.drop_unsolicited_na))  in ndisc_recv_na()
1088 	if (!neigh && lladdr && idev && READ_ONCE(idev->cnf.forwarding)) {  in ndisc_recv_na()
1157 	if (!READ_ONCE(idev->cnf.forwarding))  in ndisc_recv_rs()
1327 	if (!READ_ONCE(in6_dev->cnf.accept_ra_defrtr)) {  in ndisc_router_discovery()
1336 	    lifetime < READ_ONCE(in6_dev->cnf.accept_ra_min_lft)) {  in ndisc_router_discovery()
1347 	if (!READ_ONCE(in6_dev->cnf.accept_ra_from_local) &&  in ndisc_router_discovery()
1359 	    !READ_ONCE(in6_dev->cnf.accept_ra_rtr_pref))  in ndisc_router_discovery()
1377 	defrtr_usr_metric = in6_dev->cnf.ra_defrtr_metric;  in ndisc_router_discovery()
1430 	if (READ_ONCE(in6_dev->cnf.accept_ra_min_hop_limit) < 256 &&  in ndisc_router_discovery()
1432 		if (READ_ONCE(in6_dev->cnf.accept_ra_min_hop_limit) <=  in ndisc_router_discovery()
1434 			WRITE_ONCE(in6_dev->cnf.hop_limit,  in ndisc_router_discovery()
1517 	if (!READ_ONCE(in6_dev->cnf.accept_ra_from_local) &&  in ndisc_router_discovery()
1526 	if (READ_ONCE(in6_dev->cnf.accept_ra_rtr_pref) && ndopts.nd_opts_ri) {  in ndisc_router_discovery()
1538 			    !READ_ONCE(in6_dev->cnf.accept_ra_defrtr))  in ndisc_router_discovery()
1541 			    ntohl(ri->lifetime) < READ_ONCE(in6_dev->cnf.accept_ra_min_lft))  in ndisc_router_discovery()
1543 			if (ri->prefix_len < READ_ONCE(in6_dev->cnf.accept_ra_rt_info_min_plen))  in ndisc_router_discovery()
1545 			if (ri->prefix_len > READ_ONCE(in6_dev->cnf.accept_ra_rt_info_max_plen))  in ndisc_router_discovery()
1565 	if (READ_ONCE(in6_dev->cnf.accept_ra_pinfo) && ndopts.nd_opts_pi) {  in ndisc_router_discovery()
1576 	if (ndopts.nd_opts_mtu && READ_ONCE(in6_dev->cnf.accept_ra_mtu)) {  in ndisc_router_discovery()
1590 		} else if (READ_ONCE(in6_dev->cnf.mtu6) != mtu) {  in ndisc_router_discovery()
1591 			WRITE_ONCE(in6_dev->cnf.mtu6, mtu);  in ndisc_router_discovery()
1825 	    READ_ONCE(idev->cnf.suppress_frag_ndisc)) {  in ndisc_suppress_frag_ndisc()
1902 		if (READ_ONCE(idev->cnf.ndisc_notify) ||  in ndisc_netdev_event()
1912 			evict_nocarrier = READ_ONCE(idev->cnf.ndisc_evict_nocarrier) &&  in ndisc_netdev_event()