root/include/net/esp.h

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INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _NET_ESP_H
   3 #define _NET_ESP_H
   4 
   5 #include <linux/skbuff.h>
   6 
   7 struct ip_esp_hdr;
   8 
   9 static inline struct ip_esp_hdr *ip_esp_hdr(const struct sk_buff *skb)
  10 {
  11         return (struct ip_esp_hdr *)skb_transport_header(skb);
  12 }
  13 
  14 struct esp_info {
  15         struct  ip_esp_hdr *esph;
  16         __be64  seqno;
  17         int     tfclen;
  18         int     tailen;
  19         int     plen;
  20         int     clen;
  21         int     len;
  22         int     nfrags;
  23         __u8    proto;
  24         bool    inplace;
  25 };
  26 
  27 int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp);
  28 int esp_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp);
  29 int esp_input_done2(struct sk_buff *skb, int err);
  30 int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp);
  31 int esp6_output_tail(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *esp);
  32 int esp6_input_done2(struct sk_buff *skb, int err);
  33 #endif
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