Function pfsyncioctl

freebsd/netpfil/pf/if_pfsync.c:1332–1497

ARGSUSED */

/* ARGSUSED */
static int
pfsyncioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
	struct pfsync_softc *sc = ifp->if_softc;
	struct ifreq *ifr = (struct ifreq *)data;
	struct pfsyncreq pfsyncr;
	int error;
	int c;

	switch (cmd) {
	case SIOCSIFFLAGS:
		PFSYNC_LOCK(sc);
		if (ifp->if_flags & IFF_UP) {
			ifp->if_drv_flags |= IFF_DRV_RUNNING;
			PFSYNC_UNLOCK(sc);
			pfsync_pointers_init();
		} else {
			ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
			PFSYNC_UNLOCK(sc);
			pfsync_pointers_uninit();
		}
		break;
	case SIOCSIFMTU:
		if (!sc->sc_sync_if ||
		    ifr->ifr_mtu <= PFSYNC_MINPKT ||
		    ifr->ifr_mtu > sc->sc_sync_if->if_mtu)
			return (EINVAL);
		if (ifr->ifr_mtu < ifp->if_mtu) {
			for (c = 0; c < pfsync_buckets; c++) {
				PFSYNC_BUCKET_LOCK(&sc->sc_buckets[c]);
				if (sc->sc_buckets[c].b_len > PFSYNC_MINPKT)
					pfsync_sendout(1, c);
				PFSYNC_BUCKET_UNLOCK(&sc->sc_buckets[c]);
			}
		}
		ifp->if_mtu = ifr->ifr_mtu;
		break;
	case SIOCGETPFSYNC:
		bzero(&pfsyncr, sizeof(pfsyncr));
		PFSYNC_LOCK(sc);
		if (sc->sc_sync_if) {
			strlcpy(pfsyncr.pfsyncr_syncdev,
			    sc->sc_sync_if->if_xname, IFNAMSIZ);
		}
		pfsyncr.pfsyncr_syncpeer = sc->sc_sync_peer;
		pfsyncr.pfsyncr_maxupdates = sc->sc_maxupdates;
		pfsyncr.pfsyncr_defer = (PFSYNCF_DEFER ==
		    (sc->sc_flags & PFSYNCF_DEFER));
		PFSYNC_UNLOCK(sc);
		return (copyout(&pfsyncr, ifr_data_get_ptr(ifr),
		    sizeof(pfsyncr)));

	case SIOCSETPFSYNC:
	    {
		struct in_mfilter *imf = NULL;
		struct ifnet *sifp;
		struct ip *ip;