xfrm_state_lookup_byspi
struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi,
x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
EXPORT_SYMBOL(xfrm_state_lookup_byspi);