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);
}
static int
ntb_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct ntb_netdev *nt = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int error = 0;
switch (command) {
case SIOCSIFMTU:
{
if (ifr->ifr_mtu > ntb_transport_max_size(nt->qp) -
ETHER_HDR_LEN - ETHER_CRC_LEN) {
error = EINVAL;
break;
}
ifp->if_mtu = ifr->ifr_mtu;
break;
}
default:
error = ether_ioctl(ifp, command, data);
break;
}
return (error);
}
