396 static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip)  in arp_ignore()  argument
405 		sip = 0;  in arp_ignore()
415 		sip = 0;  in arp_ignore()
429 	return !inet_confirm_addr(net, in_dev, sip, tip, scope);  in arp_ignore()
432 static int arp_accept(struct in_device *in_dev, __be32 sip)  in arp_accept()  argument
446 		return !!inet_confirm_addr(net, in_dev, sip, 0, scope);  in arp_accept()
452 static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev)  in arp_filter()  argument
459 	rt = ip_route_output(net, sip, tip, 0, l3mdev_master_ifindex_rcu(dev),  in arp_filter()
521 				__be32 sip, __be32 tip)  in arp_fwd_pvlan()  argument
528 	if (sip == tip)  in arp_fwd_pvlan()
674 			__be32 sip, __be32 tip,  in arp_is_garp()  argument
677 	bool is_garp = tip == sip;  in arp_is_garp()
691 		*addr_type = inet_addr_type_dev_table(net, dev, sip);  in arp_is_garp()
711 	__be32 sip, tip;  in arp_process()  local
774 	memcpy(&sip, arp_ptr, 4);  in arp_process()
799 	if (sip == tip && IN_DEV_ORCONF(in_dev, DROP_GRATUITOUS_ARP))  in arp_process()
831 	if (sip == 0) {  in arp_process()
834 		    !arp_ignore(in_dev, sip, tip))  in arp_process()
835 			arp_send_dst(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip,  in arp_process()
841 	    ip_route_input_noref(skb, tip, sip, 0, dev) == 0) {  in arp_process()
849 			dont_send = arp_ignore(in_dev, sip, tip);  in arp_process()
851 				dont_send = arp_filter(sip, tip, dev);  in arp_process()
853 				n = neigh_event_ns(&arp_tbl, sha, &sip, dev);  in arp_process()
856 						     sip, dev, tip, sha,  in arp_process()
866 			     arp_fwd_pvlan(in_dev, dev, rt, sip, tip) ||  in arp_process()
869 				n = neigh_event_ns(&arp_tbl, sha, &sip, dev);  in arp_process()
877 						     sip, dev, tip, sha,  in arp_process()
892 	n = __neigh_lookup(&arp_tbl, &sip, dev, 0);  in arp_process()
895 	if (n || arp_accept(in_dev, sip)) {  in arp_process()
897 				      sip, tip, sha, tha);  in arp_process()
900 	if (arp_accept(in_dev, sip)) {  in arp_process()
911 			inet_addr_type_dev_table(net, dev, sip) ==  in arp_process()
913 			n = __neigh_lookup(&arp_tbl, &sip, dev, 1);  in arp_process()