148 bool ip_call_ra_chain(struct sk_buff *skb)  in ip_call_ra_chain()  argument
151 	u8 protocol = ip_hdr(skb)->protocol;  in ip_call_ra_chain()
153 	struct net_device *dev = skb->dev;  in ip_call_ra_chain()
165 			if (ip_is_fragment(ip_hdr(skb))) {  in ip_call_ra_chain()
166 				if (ip_defrag(net, skb, IP_DEFRAG_CALL_RA_CHAIN))  in ip_call_ra_chain()
170 				struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);  in ip_call_ra_chain()
179 		raw_rcv(last, skb);  in ip_call_ra_chain()
187 void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int protocol)  in ip_protocol_deliver_rcu()  argument
193 	raw = raw_local_deliver(skb, protocol);  in ip_protocol_deliver_rcu()
198 			if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip_protocol_deliver_rcu()
199 				kfree_skb(skb);  in ip_protocol_deliver_rcu()
202 			nf_reset_ct(skb);  in ip_protocol_deliver_rcu()
205 				      skb);  in ip_protocol_deliver_rcu()
213 			if (xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {  in ip_protocol_deliver_rcu()
215 				icmp_send(skb, ICMP_DEST_UNREACH,  in ip_protocol_deliver_rcu()
218 			kfree_skb(skb);  in ip_protocol_deliver_rcu()
221 			consume_skb(skb);  in ip_protocol_deliver_rcu()
226 static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip_local_deliver_finish()  argument
228 	__skb_pull(skb, skb_network_header_len(skb));  in ip_local_deliver_finish()
231 	ip_protocol_deliver_rcu(net, skb, ip_hdr(skb)->protocol);  in ip_local_deliver_finish()
240 int ip_local_deliver(struct sk_buff *skb)  in ip_local_deliver()  argument
245 	struct net *net = dev_net(skb->dev);  in ip_local_deliver()
247 	if (ip_is_fragment(ip_hdr(skb))) {  in ip_local_deliver()
248 		if (ip_defrag(net, skb, IP_DEFRAG_LOCAL_DELIVER))  in ip_local_deliver()
253 		       net, NULL, skb, skb->dev, NULL,  in ip_local_deliver()
257 static inline bool ip_rcv_options(struct sk_buff *skb, struct net_device *dev)  in ip_rcv_options()  argument
269 	if (skb_cow(skb, skb_headroom(skb))) {  in ip_rcv_options()
274 	iph = ip_hdr(skb);  in ip_rcv_options()
275 	opt = &(IPCB(skb)->opt);  in ip_rcv_options()
278 	if (ip_options_compile(dev_net(dev), opt, skb)) {  in ip_rcv_options()
296 		if (ip_options_rcv_srr(skb, dev))  in ip_rcv_options()
308 			      struct sk_buff *skb, struct net_device *dev)  in ip_rcv_finish_core()  argument
310 	const struct iphdr *iph = ip_hdr(skb);  in ip_rcv_finish_core()
311 	int (*edemux)(struct sk_buff *skb);  in ip_rcv_finish_core()
316 	    !skb_dst(skb) &&  in ip_rcv_finish_core()
317 	    !skb->sk &&  in ip_rcv_finish_core()
325 					      udp_v4_early_demux, skb);  in ip_rcv_finish_core()
329 			iph = ip_hdr(skb);  in ip_rcv_finish_core()
337 	if (!skb_valid_dst(skb)) {  in ip_rcv_finish_core()
338 		err = ip_route_input_noref(skb, iph->daddr, iph->saddr,  in ip_rcv_finish_core()
345 	if (unlikely(skb_dst(skb)->tclassid)) {  in ip_rcv_finish_core()
347 		u32 idx = skb_dst(skb)->tclassid;  in ip_rcv_finish_core()
349 		st[idx&0xFF].o_bytes += skb->len;  in ip_rcv_finish_core()
351 		st[(idx>>16)&0xFF].i_bytes += skb->len;  in ip_rcv_finish_core()
355 	if (iph->ihl > 5 && ip_rcv_options(skb, dev))  in ip_rcv_finish_core()
358 	rt = skb_rtable(skb);  in ip_rcv_finish_core()
360 		__IP_UPD_PO_STATS(net, IPSTATS_MIB_INMCAST, skb->len);  in ip_rcv_finish_core()
362 		__IP_UPD_PO_STATS(net, IPSTATS_MIB_INBCAST, skb->len);  in ip_rcv_finish_core()
363 	} else if (skb->pkt_type == PACKET_BROADCAST ||  in ip_rcv_finish_core()
364 		   skb->pkt_type == PACKET_MULTICAST) {  in ip_rcv_finish_core()
390 	kfree_skb(skb);  in ip_rcv_finish_core()
399 static int ip_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)  in ip_rcv_finish()  argument
401 	struct net_device *dev = skb->dev;  in ip_rcv_finish()
407 	skb = l3mdev_ip_rcv(skb);  in ip_rcv_finish()
408 	if (!skb)  in ip_rcv_finish()
411 	ret = ip_rcv_finish_core(net, sk, skb, dev);  in ip_rcv_finish()
413 		ret = dst_input(skb);  in ip_rcv_finish()
420 static struct sk_buff *ip_rcv_core(struct sk_buff *skb, struct net *net)  in ip_rcv_core()  argument
428 	if (skb->pkt_type == PACKET_OTHERHOST)  in ip_rcv_core()
431 	__IP_UPD_PO_STATS(net, IPSTATS_MIB_IN, skb->len);  in ip_rcv_core()
433 	skb = skb_share_check(skb, GFP_ATOMIC);  in ip_rcv_core()
434 	if (!skb) {  in ip_rcv_core()
439 	if (!pskb_may_pull(skb, sizeof(struct iphdr)))  in ip_rcv_core()
442 	iph = ip_hdr(skb);  in ip_rcv_core()
463 		       max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));  in ip_rcv_core()
465 	if (!pskb_may_pull(skb, iph->ihl*4))  in ip_rcv_core()
468 	iph = ip_hdr(skb);  in ip_rcv_core()
474 	if (skb->len < len) {  in ip_rcv_core()
484 	if (pskb_trim_rcsum(skb, len)) {  in ip_rcv_core()
489 	iph = ip_hdr(skb);  in ip_rcv_core()
490 	skb->transport_header = skb->network_header + iph->ihl*4;  in ip_rcv_core()
493 	memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));  in ip_rcv_core()
494 	IPCB(skb)->iif = skb->skb_iif;  in ip_rcv_core()
497 	skb_orphan(skb);  in ip_rcv_core()
499 	return skb;  in ip_rcv_core()
506 	kfree_skb(skb);  in ip_rcv_core()
514 int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,  in ip_rcv()  argument
519 	skb = ip_rcv_core(skb, net);  in ip_rcv()
520 	if (skb == NULL)  in ip_rcv()
524 		       net, NULL, skb, dev, NULL,  in ip_rcv()
530 	struct sk_buff *skb, *next;  in ip_sublist_rcv_finish()  local
532 	list_for_each_entry_safe(skb, next, head, list) {  in ip_sublist_rcv_finish()
533 		skb_list_del_init(skb);  in ip_sublist_rcv_finish()
534 		dst_input(skb);  in ip_sublist_rcv_finish()
542 	struct sk_buff *skb, *next;  in ip_list_rcv_finish()  local
546 	list_for_each_entry_safe(skb, next, head, list) {  in ip_list_rcv_finish()
547 		struct net_device *dev = skb->dev;  in ip_list_rcv_finish()
550 		skb_list_del_init(skb);  in ip_list_rcv_finish()
554 		skb = l3mdev_ip_rcv(skb);  in ip_list_rcv_finish()
555 		if (!skb)  in ip_list_rcv_finish()
557 		if (ip_rcv_finish_core(net, sk, skb, dev) == NET_RX_DROP)  in ip_list_rcv_finish()
560 		dst = skb_dst(skb);  in ip_list_rcv_finish()
569 		list_add_tail(&skb->list, &sublist);  in ip_list_rcv_finish()
589 	struct sk_buff *skb, *next;  in ip_list_rcv()  local
593 	list_for_each_entry_safe(skb, next, head, list) {  in ip_list_rcv()
594 		struct net_device *dev = skb->dev;  in ip_list_rcv()
597 		skb_list_del_init(skb);  in ip_list_rcv()
598 		skb = ip_rcv_core(skb, net);  in ip_list_rcv()
599 		if (skb == NULL)  in ip_list_rcv()
611 		list_add_tail(&skb->list, &sublist);  in ip_list_rcv()