C++ IFQ_SET_READY函数代码示例

int
wanpipe_generic_register(sdla_t *card, struct ifnet *ifp, char *ifname)
{
	wanpipe_common_t*	common = WAN_IFP_TO_COMMON(ifp);

	if (ifname == NULL || strlen(ifname) > IFNAMSIZ)
		return (EINVAL);
	else
		bcopy(ifname, ifp->if_xname, strlen(ifname));

	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
	IFQ_SET_READY(&ifp->if_snd);
	ifp->if_mtu = PP_MTU;
	ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
	common->protocol = IF_PROTO_CISCO;

	((struct sppp *)ifp)->pp_flags |= PP_CISCO;
	((struct sppp *)ifp)->pp_flags |= PP_KEEPALIVE;
	((struct sppp *)ifp)->pp_framebytes = 3;

	ifp->if_ioctl = wanpipe_generic_ioctl;	/* Will set from new_if() */
	ifp->if_start = wanpipe_generic_start;
	ifp->if_watchdog = wanpipe_generic_watchdog;

	if_attach(ifp);
	if_alloc_sadl(ifp);
	sppp_attach(ifp);

#if NBPFILTER > 0
	bpfattach(&ifp->if_bpf, ifp, DLT_PPP, PPP_HEADER_LEN);
#endif /* NBPFILTER > 0 */

	return (0);
}

int
gif_clone_create(struct if_clone *ifc, int unit)
{
	struct gif_softc *sc;
	int s;

	sc = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT|M_ZERO);
	if (!sc)
		return (ENOMEM);

	snprintf(sc->gif_if.if_xname, sizeof sc->gif_if.if_xname,
	     "%s%d", ifc->ifc_name, unit);
	sc->gif_if.if_mtu    = GIF_MTU;
	sc->gif_if.if_flags  = IFF_POINTOPOINT | IFF_MULTICAST;
	sc->gif_if.if_ioctl  = gif_ioctl;
	sc->gif_if.if_start  = gif_start;
	sc->gif_if.if_output = gif_output;
	sc->gif_if.if_type   = IFT_GIF;
	IFQ_SET_MAXLEN(&sc->gif_if.if_snd, ifqmaxlen);
	IFQ_SET_READY(&sc->gif_if.if_snd);
	sc->gif_if.if_softc = sc;
	if_attach(&sc->gif_if);
	if_alloc_sadl(&sc->gif_if);

#if NBPFILTER > 0
	bpfattach(&sc->gif_if.if_bpf, &sc->gif_if, DLT_LOOP, sizeof(u_int32_t));
#endif
	s = splnet();
	LIST_INSERT_HEAD(&gif_softc_list, sc, gif_list);
	splx(s);

	return (0);
}

static int
virtif_create(struct ifnet *ifp)
{
	uint8_t enaddr[ETHER_ADDR_LEN];
	char enaddrstr[3*ETHER_ADDR_LEN];
	struct virtif_sc *sc = ifp->if_softc;
	int error;

	if (sc->sc_viu)
		panic("%s: already created", ifp->if_xname);

	/* XXX generalize */
	virt_hwaddr(ifp->if_xname, enaddr);

	if ((error = VIFHYPER_CREATE(sc->sc_linkstr,
	    sc, enaddr, &sc->sc_viu)) != 0) {
		printf("VIFHYPER_CREATE failed: %d\n", error);
		return error;
	}

	ether_ifattach(ifp, enaddr);
	ether_snprintf(enaddrstr, sizeof(enaddrstr), enaddr);
	aprint_normal_ifnet(ifp, "Ethernet address %s\n", enaddrstr);

	IFQ_SET_READY(&ifp->if_snd);

	return 0;
}

static int
virtif_create(struct ifnet *ifp)
{
	uint8_t enaddr[ETHER_ADDR_LEN] = { 0xb2, 0x0a, 0x00, 0x0b, 0x0e, 0x01 };
	char enaddrstr[3*ETHER_ADDR_LEN];
	struct virtif_sc *sc = ifp->if_softc;
	int error;

	if (sc->sc_viu)
		panic("%s: already created", ifp->if_xname);

	enaddr[2] = cprng_fast32() & 0xff;
	enaddr[5] = sc->sc_num & 0xff;

	if ((error = VIFHYPER_CREATE(sc->sc_linkstr,
	    sc, enaddr, &sc->sc_viu)) != 0) {
		printf("VIFHYPER_CREATE failed: %d\n", error);
		return error;
	}

	ether_ifattach(ifp, enaddr);
	ether_snprintf(enaddrstr, sizeof(enaddrstr), enaddr);
	aprint_normal_ifnet(ifp, "Ethernet address %s\n", enaddrstr);

	IFQ_SET_READY(&ifp->if_snd);

	return 0;
}

/*
 * Interface exists: make available by filling in network interface
 * record.  System will initialize the interface when it is ready
 * to accept packets.
 */
void
dmcattach(device_t parent, device_t self, void *aux)
{
	struct uba_attach_args *ua = aux;
	struct dmc_softc *sc = device_private(self);

	sc->sc_dev = self;
	sc->sc_iot = ua->ua_iot;
	sc->sc_ioh = ua->ua_ioh;
	sc->sc_dmat = ua->ua_dmat;

	strlcpy(sc->sc_if.if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
	sc->sc_if.if_mtu = DMCMTU;
	sc->sc_if.if_init = dmcinit;
	sc->sc_if.if_output = dmcoutput;
	sc->sc_if.if_ioctl = dmcioctl;
	sc->sc_if.if_watchdog = dmctimeout;
	sc->sc_if.if_flags = IFF_POINTOPOINT;
	sc->sc_if.if_softc = sc;
	IFQ_SET_READY(&sc->sc_if.if_snd);

	uba_intr_establish(ua->ua_icookie, ua->ua_cvec, dmcrint, sc,
	    &sc->sc_rintrcnt);
	uba_intr_establish(ua->ua_icookie, ua->ua_cvec+4, dmcxint, sc,
	    &sc->sc_tintrcnt);
	uba_reset_establish(dmcreset, sc->sc_dev);
	evcnt_attach_dynamic(&sc->sc_rintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
	    device_xname(sc->sc_dev), "intr");
	evcnt_attach_dynamic(&sc->sc_tintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
	    device_xname(sc->sc_dev), "intr");

	if_attach(&sc->sc_if);
}

static void
tunattach0(struct tun_softc *tp)
{
	struct ifnet *ifp;

	ifp = &tp->tun_if;
	ifp->if_softc = tp;
	ifp->if_mtu = TUNMTU;
	ifp->if_ioctl = tun_ioctl;
	ifp->if_output = tun_output;
#ifdef ALTQ
	ifp->if_start = tunstart;
#endif
	ifp->if_flags = IFF_POINTOPOINT;
	ifp->if_type = IFT_TUNNEL;
	ifp->if_snd.ifq_maxlen = ifqmaxlen;
	ifp->if_collisions = 0;
	ifp->if_ierrors = 0;
	ifp->if_oerrors = 0;
	ifp->if_ipackets = 0;
	ifp->if_opackets = 0;
	ifp->if_ibytes   = 0;
	ifp->if_obytes   = 0;
	ifp->if_dlt = DLT_NULL;
	IFQ_SET_READY(&ifp->if_snd);
	if_attach(ifp);
	if_alloc_sadl(ifp);
	bpf_attach(ifp, DLT_NULL, sizeof(uint32_t));
}

void
pdq_ifattach(
    pdq_softc_t *sc,
    ifnet_ret_t (*ifwatchdog)(int unit))
{
    struct ifnet *ifp = &sc->sc_if;

    ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;

#if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__) || \
	defined(__OpenBSD__)
    ifp->if_watchdog = pdq_ifwatchdog;
#else
    ifp->if_watchdog = ifwatchdog;
#endif

    ifp->if_ioctl = pdq_ifioctl;
    ifp->if_start = pdq_ifstart;
    IFQ_SET_READY(&ifp->if_snd);

    if_attach(ifp);
    fddi_ifattach(ifp);
#if NBPFILTER > 0
    PDQ_BPFATTACH(sc, DLT_FDDI, sizeof(struct fddi_header));
#endif
}

int
loop_clone_create(struct if_clone *ifc, int unit)
{
	struct ifnet *ifp;

	ifp = malloc(sizeof(*ifp), M_DEVBUF, M_NOWAIT|M_ZERO);
	if (ifp == NULL)
		return (ENOMEM);

	snprintf(ifp->if_xname, sizeof ifp->if_xname, "lo%d", unit);
	ifp->if_softc = NULL;
	ifp->if_mtu = LOMTU;
	ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
	ifp->if_rtrequest = lortrequest;
	ifp->if_ioctl = loioctl;
	ifp->if_output = looutput;
	ifp->if_type = IFT_LOOP;
	ifp->if_hdrlen = sizeof(u_int32_t);
	ifp->if_addrlen = 0;
	IFQ_SET_READY(&ifp->if_snd);
	if (unit == 0) {
		if_attachhead(ifp);
		if_addgroup(ifp, ifc->ifc_name);
		lo0ifidx = ifp->if_index;
	} else
		if_attach(ifp);
	if_alloc_sadl(ifp);
#if NBPFILTER > 0
	bpfattach(&ifp->if_bpf, ifp, DLT_LOOP, sizeof(u_int32_t));
#endif
	return (0);
}

/*
 * Called from boot code to establish sl interfaces.
 */
void
slattach()
{
    struct sl_softc *sc;
    int i = 0;

    for (sc = sl_softc; i < NSL; sc++) {
        sc->sc_unit = i;		/* XXX */
        sprintf(sc->sc_if.if_xname, "sl%d", i++);
        sc->sc_if.if_softc = sc;
        sc->sc_if.if_mtu = SLMTU;
        sc->sc_if.if_flags =
            IFF_POINTOPOINT | SC_AUTOCOMP | IFF_MULTICAST;
        sc->sc_if.if_type = IFT_SLIP;
        sc->sc_if.if_ioctl = slioctl;
        sc->sc_if.if_output = sloutput;
        sc->sc_if.if_dlt = DLT_SLIP;
        sc->sc_fastq.ifq_maxlen = 32;
        IFQ_SET_READY(&sc->sc_if.if_snd);
        if_attach(&sc->sc_if);
        if_alloc_sadl(&sc->sc_if);
#if NBPFILTER > 0
        bpfattach(&sc->sc_if, DLT_SLIP, SLIP_HDRLEN);
#endif
    }
}

static void
tuncreate(struct cdev *dev)
{
	struct tun_softc *sc;
	struct ifnet *ifp;

	dev->si_flags &= ~SI_CHEAPCLONE;

	MALLOC(sc, struct tun_softc *, sizeof(*sc), M_TUN, M_WAITOK | M_ZERO);
	mtx_init(&sc->tun_mtx, "tun_mtx", NULL, MTX_DEF);
	sc->tun_flags = TUN_INITED;
	sc->tun_dev = dev;
	mtx_lock(&tunmtx);
	TAILQ_INSERT_TAIL(&tunhead, sc, tun_list);
	mtx_unlock(&tunmtx);

	ifp = &sc->tun_if;
	if_initname(ifp, TUNNAME, dev2unit(dev));
	ifp->if_mtu = TUNMTU;
	ifp->if_ioctl = tunifioctl;
	ifp->if_output = tunoutput;
	ifp->if_start = tunstart;
	ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
	ifp->if_type = IFT_PPP;
	ifp->if_softc = sc;
	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
	ifp->if_snd.ifq_drv_maxlen = 0;
	IFQ_SET_READY(&ifp->if_snd);

	if_attach(ifp);
	bpfattach(ifp, DLT_NULL, sizeof(u_int));
	dev->si_drv1 = sc;
}

/*
 * Interface exists: make available by filling in network interface
 * record.  System will initialize the interface when it is ready
 * to accept packets.  A STATUS command is done to get the ethernet
 * address and other interesting data.
 */
void
ilattach(device_t parent, device_t self, void *aux)
{
	struct uba_attach_args *ua = aux;
	struct il_softc *sc = device_private(self);
	struct ifnet *ifp = &sc->sc_if;
	int error;

	sc->sc_dev = self;
	sc->sc_iot = ua->ua_iot;
	sc->sc_ioh = ua->ua_ioh;
	sc->sc_dmat = ua->ua_dmat;

	/*
	 * Map interrupt vectors and reset function.
	 */
	uba_intr_establish(ua->ua_icookie, ua->ua_cvec, ilcint,
	    sc, &sc->sc_cintrcnt);
	evcnt_attach_dynamic(&sc->sc_cintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
	    device_xname(sc->sc_dev), "intr");
	uba_intr_establish(ua->ua_icookie, ua->ua_cvec-4, ilrint,
	    sc, &sc->sc_rintrcnt);
	evcnt_attach_dynamic(&sc->sc_rintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
	    device_xname(sc->sc_dev), "intr");
	uba_reset_establish(ilreset, sc->sc_dev);

	/*
	 * Reset the board and map the statistics
	 * buffer onto the Unibus.
	 */
	IL_WCSR(IL_CSR, ILC_RESET);
	(void)ilwait(sc, "reset");
	sc->sc_ui.ui_size = sizeof(struct il_stats);
	sc->sc_ui.ui_vaddr = (void *)&sc->sc_stats;
	if ((error = uballoc(device_private(parent), &sc->sc_ui, 0)))
		return printf(": failed uballoc, error = %d\n", error);

	IL_WCSR(IL_BAR, LOWORD(sc->sc_ui.ui_baddr));
	IL_WCSR(IL_BCR, sizeof(struct il_stats));
	IL_WCSR(IL_CSR, ((sc->sc_ui.ui_baddr >> 2) & IL_EUA)|ILC_STAT);
	(void)ilwait(sc, "status");
	ubfree(device_private(parent), &sc->sc_ui);
	printf("%s: module=%s firmware=%s\n", device_xname(sc->sc_dev),
		sc->sc_stats.ils_module, sc->sc_stats.ils_firmware);
	printf("%s: hardware address %s\n", device_xname(sc->sc_dev),
		ether_sprintf(sc->sc_stats.ils_addr));

	strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
	ifp->if_softc = sc;
	ifp->if_flags = IFF_BROADCAST;
	ifp->if_init = ilinit;
	ifp->if_stop = ilstop;
	ifp->if_ioctl = ether_ioctl;
	ifp->if_start = ilstart;
	ifp->if_watchdog = ilwatch;
	IFQ_SET_READY(&ifp->if_snd);

	if_attach(ifp);
	ether_ifattach(ifp, sc->sc_stats.ils_addr);
}

static int
uhso_attach_ifnet(struct uhso_softc *sc, struct usb_interface *iface, int type)
{
	struct ifnet *ifp;
	usb_error_t uerr;
	struct sysctl_ctx_list *sctx;
	struct sysctl_oid *soid;
	unsigned int devunit;

	uerr = usbd_transfer_setup(sc->sc_udev,
	    &iface->idesc->bInterfaceNumber, sc->sc_if_xfer,
	    uhso_ifnet_config, UHSO_IFNET_MAX, sc, &sc->sc_mtx);
	if (uerr) {
		UHSO_DPRINTF(0, "usbd_transfer_setup failed: %s\n",
		    usbd_errstr(uerr));
		return (-1);
	}

	sc->sc_ifp = ifp = if_alloc(IFT_OTHER);
	if (sc->sc_ifp == NULL) {
		device_printf(sc->sc_dev, "if_alloc() failed\n");
		return (-1);
	}

	callout_init_mtx(&sc->sc_c, &sc->sc_mtx, 0);
	mtx_lock(&sc->sc_mtx);
	callout_reset(&sc->sc_c, 1, uhso_if_rxflush, sc);
	mtx_unlock(&sc->sc_mtx);

	/*
	 * We create our own unit numbers for ifnet devices because the
	 * USB interface unit numbers can be at arbitrary positions yielding
	 * odd looking device names.
	 */
	devunit = alloc_unr(uhso_ifnet_unit);

	if_initname(ifp, device_get_name(sc->sc_dev), devunit);
	ifp->if_mtu = UHSO_MAX_MTU;
	ifp->if_ioctl = uhso_if_ioctl;
	ifp->if_init = uhso_if_init;
	ifp->if_start = uhso_if_start;
	ifp->if_output = uhso_if_output;
	ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_NOARP;
	ifp->if_softc = sc;
	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
	IFQ_SET_READY(&ifp->if_snd);

	if_attach(ifp);
	bpfattach(ifp, DLT_RAW, 0);

	sctx = device_get_sysctl_ctx(sc->sc_dev);
	soid = device_get_sysctl_tree(sc->sc_dev);
	/* Unlocked read... */
	SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "netif",
	    CTLFLAG_RD, ifp->if_xname, 0, "Attached network interface");

	return (0);
}

static int
ntb_setup_interface(void)
{
	struct ifnet *ifp;
	struct ntb_queue_handlers handlers = { ntb_net_rx_handler,
	    ntb_net_tx_handler, ntb_net_event_handler };
	int rc;

	net_softc.ntb = devclass_get_softc(devclass_find("ntb_hw"), 0);
	if (net_softc.ntb == NULL) {
		printf("ntb: Cannot find devclass\n");
		return (ENXIO);
	}

	ifp = net_softc.ifp = if_alloc(IFT_ETHER);
	if (ifp == NULL) {
		ntb_transport_free(&net_softc);
		printf("ntb: Cannot allocate ifnet structure\n");
		return (ENOMEM);
	}
	if_initname(ifp, "ntb", 0);

	rc = ntb_transport_probe(net_softc.ntb);
	if (rc != 0) {
		printf("ntb: Cannot init transport: %d\n", rc);
		if_free(net_softc.ifp);
		return (rc);
	}

	net_softc.qp = ntb_transport_create_queue(ifp, net_softc.ntb,
	    &handlers);
	ifp->if_init = ntb_net_init;
	ifp->if_softc = &net_softc;
	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
	ifp->if_ioctl = ntb_ioctl;
	ifp->if_start = ntb_start;
	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
	IFQ_SET_READY(&ifp->if_snd);
	create_random_local_eui48(net_softc.eaddr);
	ether_ifattach(ifp, net_softc.eaddr);
	ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_JUMBO_MTU;
	ifp->if_capenable = ifp->if_capabilities;
	ifp->if_mtu = ntb_transport_max_size(net_softc.qp) - ETHER_HDR_LEN -
	    ETHER_CRC_LEN;

	ntb_transport_link_up(net_softc.qp);
	net_softc.bufsize = ntb_transport_max_size(net_softc.qp) +
	    sizeof(struct ether_header);
	return (0);
}

void
che_attach(struct device *parent, struct device *self, void *aux)
{
	struct cheg_softc *gsc = (struct cheg_softc *)parent;
	struct che_softc *sc = (struct che_softc *)self;
	struct che_attach_args *caa = aux;
	struct ifnet *ifp;

	sc->sc_cheg = gsc;

	sc->sc_port = caa->caa_port;
	bcopy(caa->caa_lladdr, sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN);

	printf(": address %s\n", ether_sprintf(sc->sc_ac.ac_enaddr));

	ifp = &sc->sc_ac.ac_if;
	ifp->if_softc = sc;
	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
	ifp->if_ioctl = che_ioctl;
	ifp->if_start = che_start;
	ifp->if_watchdog = che_watchdog;
	ifp->if_hardmtu = MCLBYTES - ETHER_HDR_LEN - ETHER_CRC_LEN; /* XXX */
	strlcpy(ifp->if_xname, DEVNAME(sc), IFNAMSIZ);
	IFQ_SET_MAXLEN(&ifp->if_snd, 400);
	IFQ_SET_READY(&ifp->if_snd);

	ifmedia_init(&sc->sc_mii.mii_media, 0,
	    che_ifmedia_upd, che_ifmedia_sts);

	sc->sc_mii.mii_ifp = ifp;
	sc->sc_mii.mii_readreg = che_miibus_ind_readreg;
	sc->sc_mii.mii_writereg = che_miibus_ind_writereg;
	sc->sc_mii.mii_statchg = che_miibus_statchg;

	mii_attach(self, &sc->sc_mii, 0xffffffff, MII_PHY_ANY,
	    MII_OFFSET_ANY, MIIF_DOPAUSE | MIIF_HAVEFIBER);

	if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
		printf("%s: no PHY found!\n", sc->sc_dev.dv_xname);
		ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_MANUAL,
		    0, NULL);
		ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_MANUAL);
	} else
		ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);

	if_attach(ifp);
	ether_ifattach(ifp);

	return;
}

int
mpw_clone_create(struct if_clone *ifc, int unit)
{
	struct mpw_softc *sc;
	struct ifnet *ifp;
	struct ifih *ifih;

	sc = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT | M_ZERO);
	if (sc == NULL)
		return (ENOMEM);

	ifih = malloc(sizeof(*ifih), M_DEVBUF, M_NOWAIT | M_ZERO);
	if (ifih == NULL) {
		free(sc, M_DEVBUF, sizeof(*sc));
		return (ENOMEM);
	}

	ifp = &sc->sc_if;
	snprintf(ifp->if_xname, sizeof(ifp->if_xname), "mpw%d", unit);
	ifp->if_softc = sc;
	ifp->if_mtu = ETHERMTU;
	ifp->if_flags = IFF_POINTOPOINT;
	ifp->if_ioctl = mpw_ioctl;
	ifp->if_output = mpw_output;
	ifp->if_start = mpw_start;
	ifp->if_type = IFT_MPLSTUNNEL;
	ifp->if_hdrlen = ETHER_HDR_LEN;
	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
	IFQ_SET_READY(&ifp->if_snd);

	if_attach(ifp);
	if_alloc_sadl(ifp);

	sc->sc_ifa.ifa_ifp = ifp;
	sc->sc_ifa.ifa_rtrequest = link_rtrequest;
	sc->sc_ifa.ifa_addr = (struct sockaddr *) ifp->if_sadl;
	sc->sc_smpls.smpls_len = sizeof(sc->sc_smpls);
	sc->sc_smpls.smpls_family = AF_MPLS;

	ifih->ifih_input = mpw_input;
	SLIST_INSERT_HEAD(&ifp->if_inputs, ifih, ifih_next);

#if NBPFILTER > 0
	bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, ETHER_HDR_LEN);
#endif /* NBFILTER */

	return (0);
}