#ifndef _NET_ESP_H #define _NET_ESP_H #include void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len); struct ip_esp_hdr; static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb) { return (struct ip_esp_hdr *)skb_transport_header(skb); } #endif