struct net_device *gretap_fb_dev_create(struct net *net, const char *name,
u8 name_assign_type);
int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
- bool *csum_err, __be16 proto);
+ bool *csum_err, __be16 proto, int nhs);
static inline int gre_calc_hlen(__be16 o_flags)
{