seg6_hmac_compute
extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
EXPORT_SYMBOL(seg6_hmac_compute);
if (seg6_hmac_compute(hinfo, srh, &ipv6_hdr(skb)->saddr, hmac_output))
err = seg6_hmac_compute(hinfo, srh, saddr, tlv->hmac);