50 				struct sk_buff *skb)  in ip6_rcv_finish_core()  argument
52 	void (*edemux)(struct sk_buff *skb);  in ip6_rcv_finish_core()
54 	if (net->ipv4.sysctl_ip_early_demux && !skb_dst(skb) && skb->sk == NULL) {  in ip6_rcv_finish_core()
57 		ipprot = rcu_dereference(inet6_protos[ipv6_hdr(skb)->nexthdr]);  in ip6_rcv_finish_core()
60 					udp_v6_early_demux, skb);  in ip6_rcv_finish_core()
62 	if (!skb_valid_dst(skb))  in ip6_rcv_finish_core()
63 		ip6_route_input(skb);  in ip6_rcv_finish_core()
66 int ip6_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip6_rcv_finish()  argument
71 	skb = l3mdev_ip6_rcv(skb);  in ip6_rcv_finish()
72 	if (!skb)  in ip6_rcv_finish()
74 	ip6_rcv_finish_core(net, sk, skb);  in ip6_rcv_finish()
76 	return dst_input(skb);  in ip6_rcv_finish()
81 	struct sk_buff *skb, *next;  in ip6_sublist_rcv_finish()  local
83 	list_for_each_entry_safe(skb, next, head, list) {  in ip6_sublist_rcv_finish()
84 		skb_list_del_init(skb);  in ip6_sublist_rcv_finish()
85 		dst_input(skb);  in ip6_sublist_rcv_finish()
89 static bool ip6_can_use_hint(const struct sk_buff *skb,  in ip6_can_use_hint()  argument
92 	return hint && !skb_dst(skb) &&  in ip6_can_use_hint()
93 	       ipv6_addr_equal(&ipv6_hdr(hint)->daddr, &ipv6_hdr(skb)->daddr);  in ip6_can_use_hint()
97 					      struct sk_buff *skb)  in ip6_extract_route_hint()  argument
102 	return skb;  in ip6_extract_route_hint()
108 	struct sk_buff *skb, *next, *hint = NULL;  in ip6_list_rcv_finish()  local
113 	list_for_each_entry_safe(skb, next, head, list) {  in ip6_list_rcv_finish()
116 		skb_list_del_init(skb);  in ip6_list_rcv_finish()
120 		skb = l3mdev_ip6_rcv(skb);  in ip6_list_rcv_finish()
121 		if (!skb)  in ip6_list_rcv_finish()
124 		if (ip6_can_use_hint(skb, hint))  in ip6_list_rcv_finish()
125 			skb_dst_copy(skb, hint);  in ip6_list_rcv_finish()
127 			ip6_rcv_finish_core(net, sk, skb);  in ip6_list_rcv_finish()
128 		dst = skb_dst(skb);  in ip6_list_rcv_finish()
130 			hint = ip6_extract_route_hint(net, skb);  in ip6_list_rcv_finish()
139 		list_add_tail(&skb->list, &sublist);  in ip6_list_rcv_finish()
145 static struct sk_buff *ip6_rcv_core(struct sk_buff *skb, struct net_device *dev,  in ip6_rcv_core()  argument
152 	if (skb->pkt_type == PACKET_OTHERHOST) {  in ip6_rcv_core()
153 		kfree_skb(skb);  in ip6_rcv_core()
159 	idev = __in6_dev_get(skb->dev);  in ip6_rcv_core()
161 	__IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_IN, skb->len);  in ip6_rcv_core()
163 	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL ||  in ip6_rcv_core()
169 	memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm));  in ip6_rcv_core()
182 	IP6CB(skb)->iif = skb_valid_dst(skb) ? ip6_dst_idev(skb_dst(skb))->dev->ifindex : dev->ifindex;  in ip6_rcv_core()
184 	if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))  in ip6_rcv_core()
187 	hdr = ipv6_hdr(skb);  in ip6_rcv_core()
195 			max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));  in ip6_rcv_core()
215 	if (!(skb->pkt_type == PACKET_LOOPBACK ||  in ip6_rcv_core()
226 	    (skb->pkt_type == PACKET_BROADCAST ||  in ip6_rcv_core()
227 	     skb->pkt_type == PACKET_MULTICAST) &&  in ip6_rcv_core()
258 	skb->transport_header = skb->network_header + sizeof(*hdr);  in ip6_rcv_core()
259 	IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);  in ip6_rcv_core()
265 		if (pkt_len + sizeof(struct ipv6hdr) > skb->len) {  in ip6_rcv_core()
270 		if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr))) {  in ip6_rcv_core()
274 		hdr = ipv6_hdr(skb);  in ip6_rcv_core()
278 		if (ipv6_parse_hopopts(skb) < 0) {  in ip6_rcv_core()
288 	if (!skb_sk_is_prefetched(skb))  in ip6_rcv_core()
289 		skb_orphan(skb);  in ip6_rcv_core()
291 	return skb;  in ip6_rcv_core()
296 	kfree_skb(skb);  in ip6_rcv_core()
300 int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device…  in ipv6_rcv()  argument
302 	struct net *net = dev_net(skb->dev);  in ipv6_rcv()
304 	skb = ip6_rcv_core(skb, dev, net);  in ipv6_rcv()
305 	if (skb == NULL)  in ipv6_rcv()
308 		       net, NULL, skb, dev, NULL,  in ipv6_rcv()
326 	struct sk_buff *skb, *next;  in ipv6_list_rcv()  local
330 	list_for_each_entry_safe(skb, next, head, list) {  in ipv6_list_rcv()
331 		struct net_device *dev = skb->dev;  in ipv6_list_rcv()
334 		skb_list_del_init(skb);  in ipv6_list_rcv()
335 		skb = ip6_rcv_core(skb, dev, net);  in ipv6_list_rcv()
336 		if (skb == NULL)  in ipv6_list_rcv()
348 		list_add_tail(&skb->list, &sublist);  in ipv6_list_rcv()
361 void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,  in ip6_protocol_deliver_rcu()  argument
374 	idev = ip6_dst_idev(skb_dst(skb));  in ip6_protocol_deliver_rcu()
375 	nhoff = IP6CB(skb)->nhoff;  in ip6_protocol_deliver_rcu()
377 		if (!pskb_pull(skb, skb_transport_offset(skb)))  in ip6_protocol_deliver_rcu()
379 		nexthdr = skb_network_header(skb)[nhoff];  in ip6_protocol_deliver_rcu()
383 	raw = raw6_local_deliver(skb, nexthdr);  in ip6_protocol_deliver_rcu()
399 			int sdif = inet6_sdif(skb);  in ip6_protocol_deliver_rcu()
408 			nf_reset_ct(skb);  in ip6_protocol_deliver_rcu()
410 			skb_postpull_rcsum(skb, skb_network_header(skb),  in ip6_protocol_deliver_rcu()
411 					   skb_network_header_len(skb));  in ip6_protocol_deliver_rcu()
412 			hdr = ipv6_hdr(skb);  in ip6_protocol_deliver_rcu()
420 				dev = skb->dev;  in ip6_protocol_deliver_rcu()
426 			    !ipv6_is_mld(skb, nexthdr, skb_network_header_len(skb)))  in ip6_protocol_deliver_rcu()
430 		    !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))  in ip6_protocol_deliver_rcu()
434 				      skb);  in ip6_protocol_deliver_rcu()
452 			if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip6_protocol_deliver_rcu()
455 				icmpv6_send(skb, ICMPV6_PARAMPROB,  in ip6_protocol_deliver_rcu()
458 			kfree_skb(skb);  in ip6_protocol_deliver_rcu()
461 			consume_skb(skb);  in ip6_protocol_deliver_rcu()
468 	kfree_skb(skb);  in ip6_protocol_deliver_rcu()
471 static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip6_input_finish()  argument
474 	ip6_protocol_deliver_rcu(net, skb, 0, false);  in ip6_input_finish()
481 int ip6_input(struct sk_buff *skb)  in ip6_input()  argument
484 		       dev_net(skb->dev), NULL, skb, skb->dev, NULL,  in ip6_input()
489 int ip6_mc_input(struct sk_buff *skb)  in ip6_mc_input()  argument
491 	int sdif = inet6_sdif(skb);  in ip6_mc_input()
496 	__IP6_UPD_PO_STATS(dev_net(skb_dst(skb)->dev),  in ip6_mc_input()
497 			 __in6_dev_get_safely(skb->dev), IPSTATS_MIB_INMCAST,  in ip6_mc_input()
498 			 skb->len);  in ip6_mc_input()
503 		dev = dev_get_by_index_rcu(dev_net(skb->dev), sdif);  in ip6_mc_input()
506 			kfree_skb(skb);  in ip6_mc_input()
510 		dev = skb->dev;  in ip6_mc_input()
513 	hdr = ipv6_hdr(skb);  in ip6_mc_input()
522 	if (dev_net(skb->dev)->ipv6.devconf_all->mc_forwarding &&  in ip6_mc_input()
525 	    likely(!(IP6CB(skb)->flags & IP6SKB_FORWARDED))) {  in ip6_mc_input()
531 		struct inet6_skb_parm *opt = IP6CB(skb);  in ip6_mc_input()
550 				offset = ipv6_skip_exthdr(skb, sizeof(*hdr),  in ip6_mc_input()
555 				if (ipv6_is_mld(skb, nexthdr, offset))  in ip6_mc_input()
564 			skb2 = skb_clone(skb, GFP_ATOMIC);  in ip6_mc_input()
566 			skb2 = skb;  in ip6_mc_input()
567 			skb = NULL;  in ip6_mc_input()
577 		ip6_input(skb);  in ip6_mc_input()
580 		kfree_skb(skb);  in ip6_mc_input()