xfrm4_rcv_encap 1368 include/net/xfrm.h extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, xfrm4_rcv_encap 1375 include/net/xfrm.h return xfrm4_rcv_encap(skb, nexthdr, spi, 0); xfrm4_rcv_encap 155 net/ipv4/xfrm4_input.c ret = xfrm4_rcv_encap(skb, IPPROTO_ESP, 0, encap_type);