Author: nwhitehorn
Date: Sat Dec 19 02:16:38 2015
New Revision: 292460
URL: https://svnweb.freebsd.org/changeset/base/292460

Log:
  Provide link state reporting so that ifconfig_llan0="DHCP" works. The
  reported link state is fictional (always up) since the hypervisor does
  not provide this information.
  
  MFC after:    1 week

Modified:
  head/sys/powerpc/pseries/phyp_llan.c

Modified: head/sys/powerpc/pseries/phyp_llan.c
==============================================================================
--- head/sys/powerpc/pseries/phyp_llan.c        Sat Dec 19 01:45:50 2015        
(r292459)
+++ head/sys/powerpc/pseries/phyp_llan.c        Sat Dec 19 02:16:38 2015        
(r292460)
@@ -87,6 +87,8 @@ struct llan_softc {
        cell_t          unit;
        uint8_t         mac_address[8];
 
+       struct ifmedia  media;
+
        int             irqid;
        struct resource *irq;
        void            *irq_cookie;
@@ -116,6 +118,8 @@ static void llan_intr(void *xsc);
 static void    llan_init(void *xsc);
 static void    llan_start(struct ifnet *ifp);
 static int     llan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
+static void    llan_media_status(struct ifnet *ifp, struct ifmediareq *ifmr);
+static int     llan_media_change(struct ifnet *ifp);
 static void    llan_rx_load_cb(void *xsc, bus_dma_segment_t *segs, int nsegs,
                    int err);
 static int     llan_add_rxbuf(struct llan_softc *sc, struct llan_xfer *rx);
@@ -220,16 +224,46 @@ llan_attach(device_t dev)
        sc->ifp->if_ioctl = llan_ioctl;
        sc->ifp->if_init = llan_init;
 
+       ifmedia_init(&sc->media, IFM_IMASK, llan_media_change,
+           llan_media_status);
+       ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
+       ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
+
        IFQ_SET_MAXLEN(&sc->ifp->if_snd, LLAN_MAX_TX_PACKETS);
        sc->ifp->if_snd.ifq_drv_maxlen = LLAN_MAX_TX_PACKETS;
        IFQ_SET_READY(&sc->ifp->if_snd);
 
        ether_ifattach(sc->ifp, &sc->mac_address[2]);
 
+       /* We don't have link state reporting, so make it always up */
+       if_link_state_change(sc->ifp, LINK_STATE_UP);
+
+       return (0);
+}
+
+static int
+llan_media_change(struct ifnet *ifp)
+{
+       struct llan_softc *sc = ifp->if_softc;
+
+       if (IFM_TYPE(sc->media.ifm_media) != IFM_ETHER)
+               return (EINVAL);
+
+       if (IFM_SUBTYPE(sc->media.ifm_media) != IFM_AUTO)
+               return (EINVAL);
+
        return (0);
 }
 
 static void
+llan_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+
+       ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE | IFM_UNKNOWN | IFM_FDX;
+       ifmr->ifm_active = IFM_ETHER;
+}
+
+static void
 llan_rx_load_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int err)
 {
        struct llan_softc *sc = xsc;
@@ -501,6 +535,10 @@ llan_ioctl(struct ifnet *ifp, u_long cmd
                        llan_set_multicast(sc);
                mtx_unlock(&sc->io_lock);
                break;
+       case SIOCGIFMEDIA:
+       case SIOCSIFMEDIA:
+               err = ifmedia_ioctl(ifp, (struct ifreq *)data, &sc->media, cmd);
+               break;
        case SIOCSIFFLAGS:
        default:
                err = ether_ioctl(ifp, cmd, data);
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