153 bool ip_call_ra_chain(struct sk_buff *skb)  in ip_call_ra_chain()  argument
156 	u8 protocol = ip_hdr(skb)->protocol;  in ip_call_ra_chain()
158 	struct net_device *dev = skb->dev;  in ip_call_ra_chain()
170 			if (ip_is_fragment(ip_hdr(skb))) {  in ip_call_ra_chain()
171 				if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN))  in ip_call_ra_chain()
175 				struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);  in ip_call_ra_chain()
184 		raw_rcv(last, skb);  in ip_call_ra_chain()
190 static int ip_local_deliver_finish(struct sk_buff *skb)  in ip_local_deliver_finish()  argument
192 	struct net *net = dev_net(skb->dev);  in ip_local_deliver_finish()
194 	__skb_pull(skb, skb_network_header_len(skb));  in ip_local_deliver_finish()
198 		int protocol = ip_hdr(skb)->protocol;  in ip_local_deliver_finish()
203 		raw = raw_local_deliver(skb, protocol);  in ip_local_deliver_finish()
210 				if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip_local_deliver_finish()
211 					kfree_skb(skb);  in ip_local_deliver_finish()
214 				nf_reset(skb);  in ip_local_deliver_finish()
216 			ret = ipprot->handler(skb);  in ip_local_deliver_finish()
224 				if (xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip_local_deliver_finish()
226 					icmp_send(skb, ICMP_DEST_UNREACH,  in ip_local_deliver_finish()
229 				kfree_skb(skb);  in ip_local_deliver_finish()
232 				consume_skb(skb);  in ip_local_deliver_finish()
245 int ip_local_deliver(struct sk_buff *skb)  in ip_local_deliver()  argument
251 	if (ip_is_fragment(ip_hdr(skb))) {  in ip_local_deliver()
252 		if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))  in ip_local_deliver()
256 	return NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_IN, skb, skb->dev, NULL,  in ip_local_deliver()
260 static inline bool ip_rcv_options(struct sk_buff *skb)  in ip_rcv_options()  argument
264 	struct net_device *dev = skb->dev;  in ip_rcv_options()
273 	if (skb_cow(skb, skb_headroom(skb))) {  in ip_rcv_options()
278 	iph = ip_hdr(skb);  in ip_rcv_options()
279 	opt = &(IPCB(skb)->opt);  in ip_rcv_options()
282 	if (ip_options_compile(dev_net(dev), opt, skb)) {  in ip_rcv_options()
300 		if (ip_options_rcv_srr(skb))  in ip_rcv_options()
312 static int ip_rcv_finish(struct sk_buff *skb)  in ip_rcv_finish()  argument
314 	const struct iphdr *iph = ip_hdr(skb);  in ip_rcv_finish()
317 	if (sysctl_ip_early_demux && !skb_dst(skb) && skb->sk == NULL) {  in ip_rcv_finish()
323 			ipprot->early_demux(skb);  in ip_rcv_finish()
325 			iph = ip_hdr(skb);  in ip_rcv_finish()
333 	if (!skb_dst(skb)) {  in ip_rcv_finish()
334 		int err = ip_route_input_noref(skb, iph->daddr, iph->saddr,  in ip_rcv_finish()
335 					       iph->tos, skb->dev);  in ip_rcv_finish()
338 				NET_INC_STATS_BH(dev_net(skb->dev),  in ip_rcv_finish()
345 	if (unlikely(skb_dst(skb)->tclassid)) {  in ip_rcv_finish()
347 		u32 idx = skb_dst(skb)->tclassid;  in ip_rcv_finish()
349 		st[idx&0xFF].o_bytes += skb->len;  in ip_rcv_finish()
351 		st[(idx>>16)&0xFF].i_bytes += skb->len;  in ip_rcv_finish()
355 	if (iph->ihl > 5 && ip_rcv_options(skb))  in ip_rcv_finish()
358 	rt = skb_rtable(skb);  in ip_rcv_finish()
361 				skb->len);  in ip_rcv_finish()
364 				skb->len);  in ip_rcv_finish()
366 	return dst_input(skb);  in ip_rcv_finish()
369 	kfree_skb(skb);  in ip_rcv_finish()
376 int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *…  in ip_rcv()  argument
384 	if (skb->pkt_type == PACKET_OTHERHOST)  in ip_rcv()
388 	IP_UPD_PO_STATS_BH(dev_net(dev), IPSTATS_MIB_IN, skb->len);  in ip_rcv()
390 	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {  in ip_rcv()
395 	if (!pskb_may_pull(skb, sizeof(struct iphdr)))  in ip_rcv()
398 	iph = ip_hdr(skb);  in ip_rcv()
419 			max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));  in ip_rcv()
421 	if (!pskb_may_pull(skb, iph->ihl*4))  in ip_rcv()
424 	iph = ip_hdr(skb);  in ip_rcv()
430 	if (skb->len < len) {  in ip_rcv()
440 	if (pskb_trim_rcsum(skb, len)) {  in ip_rcv()
445 	skb->transport_header = skb->network_header + iph->ihl*4;  in ip_rcv()
448 	memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));  in ip_rcv()
451 	skb_orphan(skb);  in ip_rcv()
453 	return NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, skb, dev, NULL,  in ip_rcv()
461 	kfree_skb(skb);  in ip_rcv()