xform_ah_authsize
alen = xform_ah_authsize(sav->tdb_authalgxform);
int xform_ah_authsize(const struct auth_hash *);
xform_ah_authsize((sav)->tdb_authalgxform))
alen = xform_ah_authsize(esph);
alen = xform_ah_authsize(esph);
alen = xform_ah_authsize(esph);
alen = xform_ah_authsize(esph);