49 				struct sk_buff *skb)  in ip6_rcv_finish_core()  argument
52 	    !skb_dst(skb) && !skb->sk) {  in ip6_rcv_finish_core()
53 		switch (ipv6_hdr(skb)->nexthdr) {  in ip6_rcv_finish_core()
56 				tcp_v6_early_demux(skb);  in ip6_rcv_finish_core()
60 				udp_v6_early_demux(skb);  in ip6_rcv_finish_core()
65 	if (!skb_valid_dst(skb))  in ip6_rcv_finish_core()
66 		ip6_route_input(skb);  in ip6_rcv_finish_core()
69 int ip6_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip6_rcv_finish()  argument
74 	skb = l3mdev_ip6_rcv(skb);  in ip6_rcv_finish()
75 	if (!skb)  in ip6_rcv_finish()
77 	ip6_rcv_finish_core(net, sk, skb);  in ip6_rcv_finish()
79 	return dst_input(skb);  in ip6_rcv_finish()
84 	struct sk_buff *skb, *next;  in ip6_sublist_rcv_finish()  local
86 	list_for_each_entry_safe(skb, next, head, list) {  in ip6_sublist_rcv_finish()
87 		skb_list_del_init(skb);  in ip6_sublist_rcv_finish()
88 		dst_input(skb);  in ip6_sublist_rcv_finish()
92 static bool ip6_can_use_hint(const struct sk_buff *skb,  in ip6_can_use_hint()  argument
95 	return hint && !skb_dst(skb) &&  in ip6_can_use_hint()
96 	       ipv6_addr_equal(&ipv6_hdr(hint)->daddr, &ipv6_hdr(skb)->daddr);  in ip6_can_use_hint()
100 					      struct sk_buff *skb)  in ip6_extract_route_hint()  argument
105 	return skb;  in ip6_extract_route_hint()
111 	struct sk_buff *skb, *next, *hint = NULL;  in ip6_list_rcv_finish()  local
116 	list_for_each_entry_safe(skb, next, head, list) {  in ip6_list_rcv_finish()
119 		skb_list_del_init(skb);  in ip6_list_rcv_finish()
123 		skb = l3mdev_ip6_rcv(skb);  in ip6_list_rcv_finish()
124 		if (!skb)  in ip6_list_rcv_finish()
127 		if (ip6_can_use_hint(skb, hint))  in ip6_list_rcv_finish()
128 			skb_dst_copy(skb, hint);  in ip6_list_rcv_finish()
130 			ip6_rcv_finish_core(net, sk, skb);  in ip6_list_rcv_finish()
131 		dst = skb_dst(skb);  in ip6_list_rcv_finish()
133 			hint = ip6_extract_route_hint(net, skb);  in ip6_list_rcv_finish()
142 		list_add_tail(&skb->list, &sublist);  in ip6_list_rcv_finish()
148 static struct sk_buff *ip6_rcv_core(struct sk_buff *skb, struct net_device *dev,  in ip6_rcv_core()  argument
156 	if (skb->pkt_type == PACKET_OTHERHOST) {  in ip6_rcv_core()
157 		dev_core_stats_rx_otherhost_dropped_inc(skb->dev);  in ip6_rcv_core()
158 		kfree_skb_reason(skb, SKB_DROP_REASON_OTHERHOST);  in ip6_rcv_core()
164 	idev = __in6_dev_get(skb->dev);  in ip6_rcv_core()
166 	__IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_IN, skb->len);  in ip6_rcv_core()
169 	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL ||  in ip6_rcv_core()
177 	memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm));  in ip6_rcv_core()
190 	IP6CB(skb)->iif = skb_valid_dst(skb) ? ip6_dst_idev(skb_dst(skb))->dev->ifindex : dev->ifindex;  in ip6_rcv_core()
192 	if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))  in ip6_rcv_core()
195 	hdr = ipv6_hdr(skb);  in ip6_rcv_core()
205 			max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));  in ip6_rcv_core()
225 	if (!(skb->pkt_type == PACKET_LOOPBACK ||  in ip6_rcv_core()
236 	    (skb->pkt_type == PACKET_BROADCAST ||  in ip6_rcv_core()
237 	     skb->pkt_type == PACKET_MULTICAST) &&  in ip6_rcv_core()
260 	skb->transport_header = skb->network_header + sizeof(*hdr);  in ip6_rcv_core()
261 	IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);  in ip6_rcv_core()
267 		if (pkt_len + sizeof(struct ipv6hdr) > skb->len) {  in ip6_rcv_core()
273 		if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr)))  in ip6_rcv_core()
275 		hdr = ipv6_hdr(skb);  in ip6_rcv_core()
279 		if (ipv6_parse_hopopts(skb) < 0) {  in ip6_rcv_core()
289 	if (!skb_sk_is_prefetched(skb))  in ip6_rcv_core()
290 		skb_orphan(skb);  in ip6_rcv_core()
292 	return skb;  in ip6_rcv_core()
298 	kfree_skb_reason(skb, reason);  in ip6_rcv_core()
302 int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device…  in ipv6_rcv()  argument
304 	struct net *net = dev_net(skb->dev);  in ipv6_rcv()
306 	skb = ip6_rcv_core(skb, dev, net);  in ipv6_rcv()
307 	if (skb == NULL)  in ipv6_rcv()
310 		       net, NULL, skb, dev, NULL,  in ipv6_rcv()
328 	struct sk_buff *skb, *next;  in ipv6_list_rcv()  local
332 	list_for_each_entry_safe(skb, next, head, list) {  in ipv6_list_rcv()
333 		struct net_device *dev = skb->dev;  in ipv6_list_rcv()
336 		skb_list_del_init(skb);  in ipv6_list_rcv()
337 		skb = ip6_rcv_core(skb, dev, net);  in ipv6_list_rcv()
338 		if (skb == NULL)  in ipv6_list_rcv()
350 		list_add_tail(&skb->list, &sublist);  in ipv6_list_rcv()
362 void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,  in ip6_protocol_deliver_rcu()  argument
376 	idev = ip6_dst_idev(skb_dst(skb));  in ip6_protocol_deliver_rcu()
377 	nhoff = IP6CB(skb)->nhoff;  in ip6_protocol_deliver_rcu()
379 		if (!pskb_pull(skb, skb_transport_offset(skb)))  in ip6_protocol_deliver_rcu()
381 		nexthdr = skb_network_header(skb)[nhoff];  in ip6_protocol_deliver_rcu()
385 	raw = raw6_local_deliver(skb, nexthdr);  in ip6_protocol_deliver_rcu()
401 			int sdif = inet6_sdif(skb);  in ip6_protocol_deliver_rcu()
410 			nf_reset_ct(skb);  in ip6_protocol_deliver_rcu()
412 			skb_postpull_rcsum(skb, skb_network_header(skb),  in ip6_protocol_deliver_rcu()
413 					   skb_network_header_len(skb));  in ip6_protocol_deliver_rcu()
414 			hdr = ipv6_hdr(skb);  in ip6_protocol_deliver_rcu()
422 				dev = skb->dev;  in ip6_protocol_deliver_rcu()
428 			    !ipv6_is_mld(skb, nexthdr, skb_network_header_len(skb))) {  in ip6_protocol_deliver_rcu()
434 		    !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip6_protocol_deliver_rcu()
440 				      skb);  in ip6_protocol_deliver_rcu()
458 			if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip6_protocol_deliver_rcu()
461 				icmpv6_send(skb, ICMPV6_PARAMPROB,  in ip6_protocol_deliver_rcu()
467 			kfree_skb_reason(skb, reason);  in ip6_protocol_deliver_rcu()
470 			consume_skb(skb);  in ip6_protocol_deliver_rcu()
477 	kfree_skb_reason(skb, reason);  in ip6_protocol_deliver_rcu()
480 static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip6_input_finish()  argument
482 	skb_clear_delivery_time(skb);  in ip6_input_finish()
484 	ip6_protocol_deliver_rcu(net, skb, 0, false);  in ip6_input_finish()
491 int ip6_input(struct sk_buff *skb)  in ip6_input()  argument
494 		       dev_net(skb->dev), NULL, skb, skb->dev, NULL,  in ip6_input()
499 int ip6_mc_input(struct sk_buff *skb)  in ip6_mc_input()  argument
501 	int sdif = inet6_sdif(skb);  in ip6_mc_input()
506 	__IP6_UPD_PO_STATS(dev_net(skb_dst(skb)->dev),  in ip6_mc_input()
507 			 __in6_dev_get_safely(skb->dev), IPSTATS_MIB_INMCAST,  in ip6_mc_input()
508 			 skb->len);  in ip6_mc_input()
513 		dev = dev_get_by_index_rcu(dev_net(skb->dev), sdif);  in ip6_mc_input()
516 			kfree_skb(skb);  in ip6_mc_input()
520 		dev = skb->dev;  in ip6_mc_input()
523 	hdr = ipv6_hdr(skb);  in ip6_mc_input()
532 	if (atomic_read(&dev_net(skb->dev)->ipv6.devconf_all->mc_forwarding) &&  in ip6_mc_input()
535 	    likely(!(IP6CB(skb)->flags & IP6SKB_FORWARDED))) {  in ip6_mc_input()
541 		struct inet6_skb_parm *opt = IP6CB(skb);  in ip6_mc_input()
560 				offset = ipv6_skip_exthdr(skb, sizeof(*hdr),  in ip6_mc_input()
565 				if (ipv6_is_mld(skb, nexthdr, offset))  in ip6_mc_input()
574 			skb2 = skb_clone(skb, GFP_ATOMIC);  in ip6_mc_input()
576 			skb2 = skb;  in ip6_mc_input()
577 			skb = NULL;  in ip6_mc_input()
587 		ip6_input(skb);  in ip6_mc_input()
590 		kfree_skb(skb);  in ip6_mc_input()