xfrm_parse_spi
int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
if (xfrm_parse_spi(skb, IPPROTO_ESP, &spi, &seq) != 0)
if (xfrm_parse_spi(skb, IPPROTO_ESP, &spi, &seq) != 0)
EXPORT_SYMBOL(xfrm_parse_spi);
if (xfrm_parse_spi(skb, nexthdr, &spi, &seq)) {
if (!spi && xfrm_parse_spi(skb, nexthdr, &spi, &seq)) {
err = xfrm_parse_spi(skb, nexthdr, &spi, &seq);
if (xfrm_parse_spi(skb, proto, &net_spi, &net_seq) == 0) {