50 int ip6_rcv_finish(struct sk_buff *skb)  in ip6_rcv_finish()  argument
52 	if (sysctl_ip_early_demux && !skb_dst(skb) && skb->sk == NULL) {  in ip6_rcv_finish()
55 		ipprot = rcu_dereference(inet6_protos[ipv6_hdr(skb)->nexthdr]);  in ip6_rcv_finish()
57 			ipprot->early_demux(skb);  in ip6_rcv_finish()
59 	if (!skb_dst(skb))  in ip6_rcv_finish()
60 		ip6_route_input(skb);  in ip6_rcv_finish()
62 	return dst_input(skb);  in ip6_rcv_finish()
65 int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device…  in ipv6_rcv()  argument
70 	struct net *net = dev_net(skb->dev);  in ipv6_rcv()
72 	if (skb->pkt_type == PACKET_OTHERHOST) {  in ipv6_rcv()
73 		kfree_skb(skb);  in ipv6_rcv()
79 	idev = __in6_dev_get(skb->dev);  in ipv6_rcv()
81 	IP6_UPD_PO_STATS_BH(net, idev, IPSTATS_MIB_IN, skb->len);  in ipv6_rcv()
83 	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL ||  in ipv6_rcv()
89 	memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm));  in ipv6_rcv()
102 	IP6CB(skb)->iif = skb_dst(skb) ? ip6_dst_idev(skb_dst(skb))->dev->ifindex : dev->ifindex;  in ipv6_rcv()
104 	if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))  in ipv6_rcv()
107 	hdr = ipv6_hdr(skb);  in ipv6_rcv()
115 			 max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));  in ipv6_rcv()
131 	if (!(skb->pkt_type == PACKET_LOOPBACK ||  in ipv6_rcv()
154 	skb->transport_header = skb->network_header + sizeof(*hdr);  in ipv6_rcv()
155 	IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);  in ipv6_rcv()
161 		if (pkt_len + sizeof(struct ipv6hdr) > skb->len) {  in ipv6_rcv()
166 		if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr))) {  in ipv6_rcv()
170 		hdr = ipv6_hdr(skb);  in ipv6_rcv()
174 		if (ipv6_parse_hopopts(skb) < 0) {  in ipv6_rcv()
184 	skb_orphan(skb);  in ipv6_rcv()
186 	return NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, skb, dev, NULL,  in ipv6_rcv()
192 	kfree_skb(skb);  in ipv6_rcv()
201 static int ip6_input_finish(struct sk_buff *skb)  in ip6_input_finish()  argument
203 	struct net *net = dev_net(skb_dst(skb)->dev);  in ip6_input_finish()
216 	idev = ip6_dst_idev(skb_dst(skb));  in ip6_input_finish()
217 	if (!pskb_pull(skb, skb_transport_offset(skb)))  in ip6_input_finish()
219 	nhoff = IP6CB(skb)->nhoff;  in ip6_input_finish()
220 	nexthdr = skb_network_header(skb)[nhoff];  in ip6_input_finish()
222 	raw = raw6_local_deliver(skb, nexthdr);  in ip6_input_finish()
232 			nf_reset(skb);  in ip6_input_finish()
234 			skb_postpull_rcsum(skb, skb_network_header(skb),  in ip6_input_finish()
235 					   skb_network_header_len(skb));  in ip6_input_finish()
236 			hdr = ipv6_hdr(skb);  in ip6_input_finish()
238 			    !ipv6_chk_mcast_addr(skb->dev, &hdr->daddr,  in ip6_input_finish()
240 			    !ipv6_is_mld(skb, nexthdr, skb_network_header_len(skb)))  in ip6_input_finish()
244 		    !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))  in ip6_input_finish()
247 		ret = ipprot->handler(skb);  in ip6_input_finish()
254 			if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip6_input_finish()
257 				icmpv6_send(skb, ICMPV6_PARAMPROB,  in ip6_input_finish()
260 			kfree_skb(skb);  in ip6_input_finish()
263 			consume_skb(skb);  in ip6_input_finish()
272 	kfree_skb(skb);  in ip6_input_finish()
277 int ip6_input(struct sk_buff *skb)  in ip6_input()  argument
279 	return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_IN, skb, skb->dev, NULL,  in ip6_input()
283 int ip6_mc_input(struct sk_buff *skb)  in ip6_mc_input()  argument
288 	IP6_UPD_PO_STATS_BH(dev_net(skb_dst(skb)->dev),  in ip6_mc_input()
289 			 ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INMCAST,  in ip6_mc_input()
290 			 skb->len);  in ip6_mc_input()
292 	hdr = ipv6_hdr(skb);  in ip6_mc_input()
293 	deliver = ipv6_chk_mcast_addr(skb->dev, &hdr->daddr, NULL);  in ip6_mc_input()
299 	if (dev_net(skb->dev)->ipv6.devconf_all->mc_forwarding &&  in ip6_mc_input()
302 	    likely(!(IP6CB(skb)->flags & IP6SKB_FORWARDED))) {  in ip6_mc_input()
308 		struct inet6_skb_parm *opt = IP6CB(skb);  in ip6_mc_input()
327 				offset = ipv6_skip_exthdr(skb, sizeof(*hdr),  in ip6_mc_input()
332 				if (ipv6_is_mld(skb, nexthdr, offset))  in ip6_mc_input()
341 			skb2 = skb_clone(skb, GFP_ATOMIC);  in ip6_mc_input()
343 			skb2 = skb;  in ip6_mc_input()
344 			skb = NULL;  in ip6_mc_input()
354 		ip6_input(skb);  in ip6_mc_input()
357 		kfree_skb(skb);  in ip6_mc_input()