128 static int arp_constructor(struct neighbour *neigh);
129 static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb);
130 static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb);
219 static bool arp_key_eq(const struct neighbour *neigh, const void *pkey)  in arp_key_eq()  argument
221 	return neigh_key_eq32(neigh, pkey);  in arp_key_eq()
224 static int arp_constructor(struct neighbour *neigh)  in arp_constructor()  argument
226 	__be32 addr = *(__be32 *)neigh->primary_key;  in arp_constructor()
227 	struct net_device *dev = neigh->dev;  in arp_constructor()
238 	neigh->type = inet_addr_type_dev_table(dev_net(dev), dev, addr);  in arp_constructor()
241 	__neigh_parms_put(neigh->parms);  in arp_constructor()
242 	neigh->parms = neigh_parms_clone(parms);  in arp_constructor()
246 		neigh->nud_state = NUD_NOARP;  in arp_constructor()
247 		neigh->ops = &arp_direct_ops;  in arp_constructor()
248 		neigh->output = neigh_direct_output;  in arp_constructor()
265 		if (neigh->type == RTN_MULTICAST) {  in arp_constructor()
266 			neigh->nud_state = NUD_NOARP;  in arp_constructor()
267 			arp_mc_map(addr, neigh->ha, dev, 1);  in arp_constructor()
269 			neigh->nud_state = NUD_NOARP;  in arp_constructor()
270 			memcpy(neigh->ha, dev->dev_addr, dev->addr_len);  in arp_constructor()
271 		} else if (neigh->type == RTN_BROADCAST ||  in arp_constructor()
273 			neigh->nud_state = NUD_NOARP;  in arp_constructor()
274 			memcpy(neigh->ha, dev->broadcast, dev->addr_len);  in arp_constructor()
278 			neigh->ops = &arp_hh_ops;  in arp_constructor()
280 			neigh->ops = &arp_generic_ops;  in arp_constructor()
282 		if (neigh->nud_state & NUD_VALID)  in arp_constructor()
283 			neigh->output = neigh->ops->connected_output;  in arp_constructor()
285 			neigh->output = neigh->ops->output;  in arp_constructor()
290 static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb)  in arp_error_report()  argument
329 static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)  in arp_solicit()  argument
333 	struct net_device *dev = neigh->dev;  in arp_solicit()
334 	__be32 target = *(__be32 *)neigh->primary_key;  in arp_solicit()
335 	int probes = atomic_read(&neigh->probes);  in arp_solicit()
372 	probes -= NEIGH_VAR(neigh->parms, UCAST_PROBES);  in arp_solicit()
374 		if (!(neigh->nud_state & NUD_VALID))  in arp_solicit()
376 		neigh_ha_snapshot(dst_ha, neigh, dev);  in arp_solicit()
379 		probes -= NEIGH_VAR(neigh->parms, APP_PROBES);  in arp_solicit()
381 			neigh_app_ns(neigh);  in arp_solicit()
974 	struct neighbour *neigh;  in arp_req_set()  local
1014 	neigh = __neigh_lookup_errno(&arp_tbl, &ip, dev);  in arp_req_set()
1015 	err = PTR_ERR(neigh);  in arp_req_set()
1016 	if (!IS_ERR(neigh)) {  in arp_req_set()
1020 		err = neigh_update(neigh, (r->arp_flags & ATF_COM) ?  in arp_req_set()
1024 		neigh_release(neigh);  in arp_req_set()
1029 static unsigned int arp_state_to_flags(struct neighbour *neigh)  in arp_state_to_flags()  argument
1031 	if (neigh->nud_state&NUD_PERMANENT)  in arp_state_to_flags()
1033 	else if (neigh->nud_state&NUD_VALID)  in arp_state_to_flags()
1046 	struct neighbour *neigh;  in arp_req_get()  local
1049 	neigh = neigh_lookup(&arp_tbl, &ip, dev);  in arp_req_get()
1050 	if (neigh) {  in arp_req_get()
1051 		if (!(neigh->nud_state & NUD_NOARP)) {  in arp_req_get()
1052 			read_lock_bh(&neigh->lock);  in arp_req_get()
1053 			memcpy(r->arp_ha.sa_data, neigh->ha, dev->addr_len);  in arp_req_get()
1054 			r->arp_flags = arp_state_to_flags(neigh);  in arp_req_get()
1055 			read_unlock_bh(&neigh->lock);  in arp_req_get()
1060 		neigh_release(neigh);  in arp_req_get()
1067 	struct neighbour *neigh = neigh_lookup(&arp_tbl, &ip, dev);  in arp_invalidate()  local
1070 	if (neigh) {  in arp_invalidate()
1071 		if (neigh->nud_state & ~NUD_NOARP)  in arp_invalidate()
1072 			err = neigh_update(neigh, NULL, NUD_FAILED,  in arp_invalidate()
1075 		neigh_release(neigh);  in arp_invalidate()