977 static int arp_req_set_public(struct net *net, struct arpreq *r,  in arp_req_set_public()  argument
980 	__be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_set_public()
981 	__be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;  in arp_req_set_public()
985 	if (!dev && (r->arp_flags & ATF_COM)) {  in arp_req_set_public()
986 		dev = dev_getbyhwaddr_rcu(net, r->arp_ha.sa_family,  in arp_req_set_public()
987 				      r->arp_ha.sa_data);  in arp_req_set_public()
1000 static int arp_req_set(struct net *net, struct arpreq *r,  in arp_req_set()  argument
1007 	if (r->arp_flags & ATF_PUBL)  in arp_req_set()
1008 		return arp_req_set_public(net, r, dev);  in arp_req_set()
1010 	ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_set()
1011 	if (r->arp_flags & ATF_PERM)  in arp_req_set()
1012 		r->arp_flags |= ATF_COM;  in arp_req_set()
1032 		if (r->arp_ha.sa_family != ARPHRD_FDDI &&  in arp_req_set()
1033 		    r->arp_ha.sa_family != ARPHRD_ETHER &&  in arp_req_set()
1034 		    r->arp_ha.sa_family != ARPHRD_IEEE802)  in arp_req_set()
1039 		if (r->arp_ha.sa_family != dev->type)  in arp_req_set()
1048 		if (r->arp_flags & ATF_PERM)  in arp_req_set()
1050 		err = neigh_update(neigh, (r->arp_flags & ATF_COM) ?  in arp_req_set()
1051 				   r->arp_ha.sa_data : NULL, state,  in arp_req_set()
1073 static int arp_req_get(struct arpreq *r, struct net_device *dev)  in arp_req_get()  argument
1075 	__be32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr;  in arp_req_get()
1083 			memcpy(r->arp_ha.sa_data, neigh->ha, dev->addr_len);  in arp_req_get()
1084 			r->arp_flags = arp_state_to_flags(neigh);  in arp_req_get()
1086 			r->arp_ha.sa_family = dev->type;  in arp_req_get()
1087 			strlcpy(r->arp_dev, dev->name, sizeof(r->arp_dev));  in arp_req_get()
1111 static int arp_req_delete_public(struct net *net, struct arpreq *r,  in arp_req_delete_public()  argument
1114 	__be32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr;  in arp_req_delete_public()
1115 	__be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;  in arp_req_delete_public()
1126 static int arp_req_delete(struct net *net, struct arpreq *r,  in arp_req_delete()  argument
1131 	if (r->arp_flags & ATF_PUBL)  in arp_req_delete()
1132 		return arp_req_delete_public(net, r, dev);  in arp_req_delete()
1134 	ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_delete()
1154 	struct arpreq r;  in arp_ioctl()  local
1163 		err = copy_from_user(&r, arg, sizeof(struct arpreq));  in arp_ioctl()
1171 	if (r.arp_pa.sa_family != AF_INET)  in arp_ioctl()
1174 	if (!(r.arp_flags & ATF_PUBL) &&  in arp_ioctl()
1175 	    (r.arp_flags & (ATF_NETMASK | ATF_DONTPUB)))  in arp_ioctl()
1177 	if (!(r.arp_flags & ATF_NETMASK))  in arp_ioctl()
1178 		((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr =  in arp_ioctl()
1181 	if (r.arp_dev[0]) {  in arp_ioctl()
1183 		dev = __dev_get_by_name(net, r.arp_dev);  in arp_ioctl()
1188 		if (!r.arp_ha.sa_family)  in arp_ioctl()
1189 			r.arp_ha.sa_family = dev->type;  in arp_ioctl()
1191 		if ((r.arp_flags & ATF_COM) && r.arp_ha.sa_family != dev->type)  in arp_ioctl()
1200 		err = arp_req_delete(net, &r, dev);  in arp_ioctl()
1203 		err = arp_req_set(net, &r, dev);  in arp_ioctl()
1206 		err = arp_req_get(&r, dev);  in arp_ioctl()
1211 	if (cmd == SIOCGARP && !err && copy_to_user(arg, &r, sizeof(r)))  in arp_ioctl()