dst_ops->get_mss = NULL; 
int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo){	int err = 0;	if (unlikely(afinfo == NULL))		return -EINVAL;	if (unlikely(afinfo->family >= NPROTO))		return -EAFNOSUPPORT;	write_lock(&xfrm_policy_afinfo_lock);	if (likely(xfrm_policy_afinfo[afinfo->family] != NULL)) {		if (unlikely(xfrm_policy_afinfo[afinfo->family] != afinfo))			err = -EINVAL;		else {			struct dst_ops *dst_ops = afinfo->dst_ops;			xfrm_policy_afinfo[afinfo->family] = NULL;			dst_ops->kmem_cachep = NULL;			dst_ops->check = NULL;			dst_ops->negative_advice = NULL;			dst_ops->link_failure = NULL;			dst_ops->get_mss = NULL;			afinfo->garbage_collect = NULL;		}	}	write_unlock(&xfrm_policy_afinfo_lock);	return err;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/80b30c1023dbd795faf948dee0cfb3b270b56d47/xfrm_policy.c/clean/net/xfrm/xfrm_policy.c