20 int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb)  in xfrm4_extract_input()  argument
22 	return xfrm4_extract_header(skb);  in xfrm4_extract_input()
25 static inline int xfrm4_rcv_encap_finish(struct sock *sk, struct sk_buff *skb)  in xfrm4_rcv_encap_finish()  argument
27 	if (!skb_dst(skb)) {  in xfrm4_rcv_encap_finish()
28 		const struct iphdr *iph = ip_hdr(skb);  in xfrm4_rcv_encap_finish()
30 		if (ip_route_input_noref(skb, iph->daddr, iph->saddr,  in xfrm4_rcv_encap_finish()
31 					 iph->tos, skb->dev))  in xfrm4_rcv_encap_finish()
34 	return dst_input(skb);  in xfrm4_rcv_encap_finish()
36 	kfree_skb(skb);  in xfrm4_rcv_encap_finish()
40 int xfrm4_transport_finish(struct sk_buff *skb, int async)  in xfrm4_transport_finish()  argument
42 	struct iphdr *iph = ip_hdr(skb);  in xfrm4_transport_finish()
44 	iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol;  in xfrm4_transport_finish()
51 	__skb_push(skb, skb->data - skb_network_header(skb));  in xfrm4_transport_finish()
52 	iph->tot_len = htons(skb->len);  in xfrm4_transport_finish()
55 	NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, NULL, skb,  in xfrm4_transport_finish()
56 		skb->dev, NULL,  in xfrm4_transport_finish()
68 int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)  in xfrm4_udp_encap_rcv()  argument
85 	len = skb->len - sizeof(struct udphdr);  in xfrm4_udp_encap_rcv()
86 	if (!pskb_may_pull(skb, sizeof(struct udphdr) + min(len, 8)))  in xfrm4_udp_encap_rcv()
90 	uh = udp_hdr(skb);  in xfrm4_udp_encap_rcv()
127 	if (skb_unclone(skb, GFP_ATOMIC))  in xfrm4_udp_encap_rcv()
131 	iph = ip_hdr(skb);  in xfrm4_udp_encap_rcv()
134 	if (skb->len < iphlen + len) {  in xfrm4_udp_encap_rcv()
143 	__skb_pull(skb, len);  in xfrm4_udp_encap_rcv()
144 	skb_reset_transport_header(skb);  in xfrm4_udp_encap_rcv()
147 	return xfrm4_rcv_encap(skb, IPPROTO_ESP, 0, encap_type);  in xfrm4_udp_encap_rcv()
150 	kfree_skb(skb);  in xfrm4_udp_encap_rcv()
154 int xfrm4_rcv(struct sk_buff *skb)  in xfrm4_rcv()  argument
156 	return xfrm4_rcv_spi(skb, ip_hdr(skb)->protocol, 0);  in xfrm4_rcv()