1013 static int arp_req_set_public(struct net *net, struct arpreq *r,  in arp_req_set_public()  argument
1016 	__be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_set_public()
1017 	__be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;  in arp_req_set_public()
1021 	if (!dev && (r->arp_flags & ATF_COM)) {  in arp_req_set_public()
1022 		dev = dev_getbyhwaddr_rcu(net, r->arp_ha.sa_family,  in arp_req_set_public()
1023 				      r->arp_ha.sa_data);  in arp_req_set_public()
1036 static int arp_req_set(struct net *net, struct arpreq *r,  in arp_req_set()  argument
1043 	if (r->arp_flags & ATF_PUBL)  in arp_req_set()
1044 		return arp_req_set_public(net, r, dev);  in arp_req_set()
1046 	ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_set()
1047 	if (r->arp_flags & ATF_PERM)  in arp_req_set()
1048 		r->arp_flags |= ATF_COM;  in arp_req_set()
1068 		if (r->arp_ha.sa_family != ARPHRD_FDDI &&  in arp_req_set()
1069 		    r->arp_ha.sa_family != ARPHRD_ETHER &&  in arp_req_set()
1070 		    r->arp_ha.sa_family != ARPHRD_IEEE802)  in arp_req_set()
1075 		if (r->arp_ha.sa_family != dev->type)  in arp_req_set()
1084 		if (r->arp_flags & ATF_PERM)  in arp_req_set()
1086 		err = neigh_update(neigh, (r->arp_flags & ATF_COM) ?  in arp_req_set()
1087 				   r->arp_ha.sa_data : NULL, state,  in arp_req_set()
1109 static int arp_req_get(struct arpreq *r, struct net_device *dev)  in arp_req_get()  argument
1111 	__be32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr;  in arp_req_get()
1118 		memcpy(r->arp_ha.sa_data, neigh->ha, dev->addr_len);  in arp_req_get()
1119 		r->arp_flags = arp_state_to_flags(neigh);  in arp_req_get()
1121 		r->arp_ha.sa_family = dev->type;  in arp_req_get()
1122 		strlcpy(r->arp_dev, dev->name, sizeof(r->arp_dev));  in arp_req_get()
1145 static int arp_req_delete_public(struct net *net, struct arpreq *r,  in arp_req_delete_public()  argument
1148 	__be32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr;  in arp_req_delete_public()
1149 	__be32 mask = ((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;  in arp_req_delete_public()
1160 static int arp_req_delete(struct net *net, struct arpreq *r,  in arp_req_delete()  argument
1165 	if (r->arp_flags & ATF_PUBL)  in arp_req_delete()
1166 		return arp_req_delete_public(net, r, dev);  in arp_req_delete()
1168 	ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;  in arp_req_delete()
1188 	struct arpreq r;  in arp_ioctl()  local
1197 		err = copy_from_user(&r, arg, sizeof(struct arpreq));  in arp_ioctl()
1205 	if (r.arp_pa.sa_family != AF_INET)  in arp_ioctl()
1208 	if (!(r.arp_flags & ATF_PUBL) &&  in arp_ioctl()
1209 	    (r.arp_flags & (ATF_NETMASK | ATF_DONTPUB)))  in arp_ioctl()
1211 	if (!(r.arp_flags & ATF_NETMASK))  in arp_ioctl()
1212 		((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr =  in arp_ioctl()
1215 	if (r.arp_dev[0]) {  in arp_ioctl()
1217 		dev = __dev_get_by_name(net, r.arp_dev);  in arp_ioctl()
1222 		if (!r.arp_ha.sa_family)  in arp_ioctl()
1223 			r.arp_ha.sa_family = dev->type;  in arp_ioctl()
1225 		if ((r.arp_flags & ATF_COM) && r.arp_ha.sa_family != dev->type)  in arp_ioctl()
1234 		err = arp_req_delete(net, &r, dev);  in arp_ioctl()
1237 		err = arp_req_set(net, &r, dev);  in arp_ioctl()
1240 		err = arp_req_get(&r, dev);  in arp_ioctl()
1245 	if (cmd == SIOCGARP && !err && copy_to_user(arg, &r, sizeof(r)))  in arp_ioctl()