114 static unsigned int dn_dst_default_advmss(const struct dst_entry *dst);
115 static unsigned int dn_dst_mtu(const struct dst_entry *dst);
120 static void dn_dst_update_pmtu(struct dst_entry *dst, struct sock *sk,
122 static void dn_dst_redirect(struct dst_entry *dst, struct sock *sk,
124 static struct neighbour *dn_dst_neigh_lookup(const struct dst_entry *dst,
154 static void dn_dst_destroy(struct dst_entry *dst)  in dn_dst_destroy()  argument
156 	struct dn_route *rt = (struct dn_route *) dst;  in dn_dst_destroy()
160 	dst_destroy_metrics_generic(dst);  in dn_dst_destroy()
163 static void dn_dst_ifdown(struct dst_entry *dst, struct net_device *dev, int how)  in dn_dst_ifdown()  argument
166 		struct dn_route *rt = (struct dn_route *) dst;  in dn_dst_ifdown()
177 static __inline__ unsigned int dn_hash(__le16 src, __le16 dst)  in dn_hash()  argument
179 	__u16 tmp = (__u16 __force)(src ^ dst);  in dn_hash()
188 	call_rcu_bh(&rt->dst.rcu_head, dst_rcu_free);  in dnrt_free()
193 	dst_release(&rt->dst);  in dnrt_drop()
194 	call_rcu_bh(&rt->dst.rcu_head, dst_rcu_free);  in dnrt_drop()
211 			if (atomic_read(&rt->dst.__refcnt) ||  in dn_dst_check_expire()
212 					(now - rt->dst.lastuse) < expire) {  in dn_dst_check_expire()
213 				rtp = &rt->dst.dn_next;  in dn_dst_check_expire()
216 			*rtp = rt->dst.dn_next;  in dn_dst_check_expire()
217 			rt->dst.dn_next = NULL;  in dn_dst_check_expire()
244 			if (atomic_read(&rt->dst.__refcnt) ||  in dn_dst_gc()
245 					(now - rt->dst.lastuse) < expire) {  in dn_dst_gc()
246 				rtp = &rt->dst.dn_next;  in dn_dst_gc()
249 			*rtp = rt->dst.dn_next;  in dn_dst_gc()
250 			rt->dst.dn_next = NULL;  in dn_dst_gc()
270 static void dn_dst_update_pmtu(struct dst_entry *dst, struct sock *sk,  in dn_dst_update_pmtu()  argument
273 	struct dn_route *rt = (struct dn_route *) dst;  in dn_dst_update_pmtu()
285 	if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {  in dn_dst_update_pmtu()
286 		if (!(dst_metric_locked(dst, RTAX_MTU))) {  in dn_dst_update_pmtu()
287 			dst_metric_set(dst, RTAX_MTU, mtu);  in dn_dst_update_pmtu()
288 			dst_set_expires(dst, dn_rt_mtu_expires);  in dn_dst_update_pmtu()
290 		if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {  in dn_dst_update_pmtu()
292 			u32 existing_mss = dst_metric_raw(dst, RTAX_ADVMSS);  in dn_dst_update_pmtu()
294 				dst_metric_set(dst, RTAX_ADVMSS, mss);  in dn_dst_update_pmtu()
299 static void dn_dst_redirect(struct dst_entry *dst, struct sock *sk,  in dn_dst_redirect()  argument
307 static struct dst_entry *dn_dst_check(struct dst_entry *dst, __u32 cookie)  in dn_dst_check()  argument
312 static struct dst_entry *dn_dst_negative_advice(struct dst_entry *dst)  in dn_dst_negative_advice()  argument
314 	dst_release(dst);  in dn_dst_negative_advice()
345 			*rthp = rth->dst.dn_next;  in dn_insert_route()
346 			rcu_assign_pointer(rth->dst.dn_next,  in dn_insert_route()
350 			dst_use(&rth->dst, now);  in dn_insert_route()
357 		rthp = &rth->dst.dn_next;  in dn_insert_route()
360 	rcu_assign_pointer(rt->dst.dn_next, dn_rt_hash_table[hash].chain);  in dn_insert_route()
363 	dst_use(&rt->dst, now);  in dn_insert_route()
381 			next = rcu_dereference_raw(rt->dst.dn_next);  in dn_run_flush()
382 			RCU_INIT_POINTER(rt->dst.dn_next, NULL);  in dn_run_flush()
437 	__le16 *dst;  in dn_return_short()  local
450 	dst = (__le16 *)ptr;  in dn_return_short()
456 	swap(*src, *dst);  in dn_return_short()
530 			le16_to_cpu(cb->src), le16_to_cpu(cb->dst),  in dn_route_rx_packet()
560 	cb->dst = dn_eth2dn(ptr);  in dn_route_rx_long()
598 	cb->dst = *(__le16 *)ptr;  in dn_route_rx_short()
749 	struct dst_entry *dst = skb_dst(skb);  in dn_output()  local
750 	struct dn_route *rt = (struct dn_route *)dst;  in dn_output()
751 	struct net_device *dev = dst->dev;  in dn_output()
762 	cb->dst = rt->rt_daddr;  in dn_output()
788 	struct dst_entry *dst = skb_dst(skb);  in dn_forward()  local
789 	struct dn_dev *dn_db = rcu_dereference(dst->dev->dn_ptr);  in dn_forward()
802 	if (skb_cow(skb, LL_RESERVED_SPACE(rt->dst.dev)+header_len))  in dn_forward()
811 	skb->dev = rt->dst.dev;  in dn_forward()
840 			    le16_to_cpu(cb->src), le16_to_cpu(cb->dst));  in dn_rt_bug_sk()
852 			    le16_to_cpu(cb->src), le16_to_cpu(cb->dst));  in dn_rt_bug()
859 static unsigned int dn_dst_default_advmss(const struct dst_entry *dst)  in dn_dst_default_advmss()  argument
861 	return dn_mss_from_pmtu(dst->dev, dst_mtu(dst));  in dn_dst_default_advmss()
864 static unsigned int dn_dst_mtu(const struct dst_entry *dst)  in dn_dst_mtu()  argument
866 	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);  in dn_dst_mtu()
868 	return mtu ? : dst->dev->mtu;  in dn_dst_mtu()
871 static struct neighbour *dn_dst_neigh_lookup(const struct dst_entry *dst,  in dn_dst_neigh_lookup()  argument
875 	return __neigh_lookup_errno(&dn_neigh_table, daddr, dst->dev);  in dn_dst_neigh_lookup()
881 	struct net_device *dev = rt->dst.dev;  in dn_rt_set_next_hop()
889 		dst_init_metrics(&rt->dst, fi->fib_metrics, true);  in dn_rt_set_next_hop()
900 	if (dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)  in dn_rt_set_next_hop()
901 		dst_metric_set(&rt->dst, RTAX_MTU, rt->dst.dev->mtu);  in dn_rt_set_next_hop()
902 	mss_metric = dst_metric_raw(&rt->dst, RTAX_ADVMSS);  in dn_rt_set_next_hop()
904 		unsigned int mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->dst));  in dn_rt_set_next_hop()
906 			dst_metric_set(&rt->dst, RTAX_ADVMSS, mss);  in dn_rt_set_next_hop()
1207 	rt->dst.lastuse = jiffies;  in dn_route_output_slow()
1208 	rt->dst.output  = dn_output;  in dn_route_output_slow()
1209 	rt->dst.input   = dn_rt_bug;  in dn_route_output_slow()
1212 		rt->dst.input = dn_nsp_rx;  in dn_route_output_slow()
1241 	dst_free(&rt->dst);  in dn_route_output_slow()
1257 			rt = rcu_dereference_bh(rt->dst.dn_next)) {  in __dn_route_output_key()
1263 				dst_use(&rt->dst, jiffies);  in __dn_route_output_key()
1265 				*pprt = &rt->dst;  in __dn_route_output_key()
1320 		.daddr = cb->dst,  in dn_route_input_slow()
1357 		if (!dn_dev_islocal(in_dev, cb->dst))  in dn_route_input_slow()
1421 		fld.saddr = cb->dst;  in dn_route_input_slow()
1465 	rt->fld.daddr        = cb->dst;  in dn_route_input_slow()
1471 	rt->dst.lastuse = jiffies;  in dn_route_input_slow()
1472 	rt->dst.output = dn_rt_bug_sk;  in dn_route_input_slow()
1475 		rt->dst.input = dn_forward;  in dn_route_input_slow()
1478 		rt->dst.output = dn_output;  in dn_route_input_slow()
1479 		rt->dst.input = dn_nsp_rx;  in dn_route_input_slow()
1480 		rt->dst.dev = in_dev;  in dn_route_input_slow()
1486 		rt->dst.input = dst_discard;  in dn_route_input_slow()
1496 	skb_dst_set(skb, &rt->dst);  in dn_route_input_slow()
1518 	dst_free(&rt->dst);  in dn_route_input_slow()
1526 	unsigned int hash = dn_hash(cb->src, cb->dst);  in dn_route_input()
1533 	    rt = rcu_dereference(rt->dst.dn_next)) {  in dn_route_input()
1535 		    (rt->fld.daddr == cb->dst) &&  in dn_route_input()
1539 			dst_use(&rt->dst, jiffies);  in dn_route_input()
1585 	if (rt->dst.dev &&  in dn_rt_fill_info()
1586 	    nla_put_u32(skb, RTA_OIF, rt->dst.dev->ifindex) < 0)  in dn_rt_fill_info()
1601 	if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)  in dn_rt_fill_info()
1604 	expires = rt->dst.expires ? rt->dst.expires - jiffies : 0;  in dn_rt_fill_info()
1605 	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, expires,  in dn_rt_fill_info()
1606 			       rt->dst.error) < 0)  in dn_rt_fill_info()
1684 		cb->dst = fld.daddr;  in dn_cache_getroute()
1690 		if (!err && -rt->dst.error)  in dn_cache_getroute()
1691 			err = rt->dst.error;  in dn_cache_getroute()
1702 	skb_dst_set(skb, &rt->dst);  in dn_cache_getroute()
1751 			rt = rcu_dereference_bh(rt->dst.dn_next), idx++) {  in dn_cache_dump()
1754 			skb_dst_set(skb, dst_clone(&rt->dst));  in dn_cache_dump()
1797 	rt = rcu_dereference_bh(rt->dst.dn_next);  in dn_rt_cache_get_next()
1838 		   rt->dst.dev ? rt->dst.dev->name : "*",  in dn_rt_cache_seq_show()
1841 		   atomic_read(&rt->dst.__refcnt),  in dn_rt_cache_seq_show()
1842 		   rt->dst.__use, 0);  in dn_rt_cache_seq_show()