Function lagg_lacp_input

freebsd/net/if_lagg.c:2600–2628

}

static struct mbuf *
lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m)
{
	struct ifnet *ifp = sc->sc_ifp;
	struct ether_header *eh;
	u_short etype;

	eh = mtod(m, struct ether_header *);
	etype = ntohs(eh->ether_type);

	/* Tap off LACP control messages */
	if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) {
		m = lacp_input(lp, m);
		if (m == NULL)
			return (NULL);
	}

	/*
	 * If the port is not collecting or not in the active aggregator then
	 * free and return.
	 */
	if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) {
		m_freem(m);
		return (NULL);
	}

	m->m_pkthdr.rcvif = ifp;
	return (m);
}