net/xfrm/xfrm_inout.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/ipv6.h>
   3 #include <net/dsfield.h>
   4 #include <net/xfrm.h>
   5
   6 #ifndef XFRM_INOUT_H
   7 #define XFRM_INOUT_H 1
   8
   9 static inline void xfrm6_beet_make_header(struct sk_buff *skb)
  10 {
  11         struct ipv6hdr *iph = ipv6_hdr(skb);
  12
  13         iph->version = 6;
  14
  15         memcpy(iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl,
  16                sizeof(iph->flow_lbl));
  17         iph->nexthdr = XFRM_MODE_SKB_CB(skb)->protocol;
  18
  19         ipv6_change_dsfield(iph, 0, XFRM_MODE_SKB_CB(skb)->tos);
  20         iph->hop_limit = XFRM_MODE_SKB_CB(skb)->ttl;
  21 }
  22
  23 static inline void xfrm4_beet_make_header(struct sk_buff *skb)
  24 {
  25         struct iphdr *iph = ip_hdr(skb);
  26
  27         iph->ihl = 5;
  28         iph->version = 4;
  29
  30         iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol;
  31         iph->tos = XFRM_MODE_SKB_CB(skb)->tos;
  32
  33         iph->id = XFRM_MODE_SKB_CB(skb)->id;
  34         iph->frag_off = XFRM_MODE_SKB_CB(skb)->frag_off;
  35         iph->ttl = XFRM_MODE_SKB_CB(skb)->ttl;
  36 }
  37
  38 #endif