xfrm4_extract_header 1366 include/net/xfrm.h extern int xfrm4_extract_header(struct sk_buff *skb); xfrm4_extract_header 21 net/ipv4/xfrm4_input.c return xfrm4_extract_header(skb); xfrm4_extract_header 52 net/ipv4/xfrm4_output.c return xfrm4_extract_header(skb);