Function in_pcbmodify_txrtlmt

freebsd/netinet/in_pcb.c:3404–3429

* Modify TX rate limit based on the existing "inp->inp_snd_tag", * if any. */

 * if any.
 */
int
in_pcbmodify_txrtlmt(struct inpcb *inp, uint32_t max_pacing_rate)
{
	union if_snd_tag_modify_params params = {
		.rate_limit.max_rate = max_pacing_rate,
		.rate_limit.flags = M_NOWAIT,
	};
	struct m_snd_tag *mst;
	struct ifnet *ifp;
	int error;

	mst = inp->inp_snd_tag;
	if (mst == NULL)
		return (EINVAL);

	ifp = mst->ifp;
	if (ifp == NULL)
		return (EINVAL);

	if (ifp->if_snd_tag_modify == NULL) {
		error = EOPNOTSUPP;
	} else {
		error = ifp->if_snd_tag_modify(mst, &params);
	}
	return (error);
}

/*
 * Query existing TX rate limit based on the existing