sys/net/agr/if_agrmonitor.c

   1 /*      $NetBSD: if_agrmonitor.c,v 1.3 2005/12/11 12:24:54 christos Exp $       */
   2
   3 /*-
   4  * Copyright (c)2005 YAMAMOTO Takashi,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: if_agrmonitor.c,v 1.3 2005/12/11 12:24:54 christos Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/callout.h>
  34 #include <sys/systm.h>
  35
  36 #include <net/if.h>
  37 #include <net/if_media.h>
  38
  39 #include <net/agr/if_agrvar_impl.h>
  40 #include <net/agr/if_agrsubr.h>
  41
  42 void
  43 agrport_monitor(struct agr_port *port)
  44 {
  45         struct agr_softc *sc = AGR_SC_FROM_PORT(port);
  46         u_int media;
  47         u_int status;
  48
  49         /*
  50          * XXX XXX
  51          * assuming that it's safe to use SIOCGIFMEDIA from callout handler.
  52          * maybe it's better to have a worker thread.
  53          */
  54
  55         media = IFM_ETHER | IFM_NONE;
  56         status = IFM_AVALID;
  57         if ((~port->port_ifp->if_flags & (IFF_RUNNING | IFF_UP))
  58             == 0) {
  59                 int error;
  60
  61                 error = agr_port_getmedia(port, &media, &status);
  62                 if (error) {
  63 #if defined(DEBUG)
  64                         printf("getmedia: error %d\n", error);
  65 #endif /* defined(DEBUG) */
  66                 }
  67         }
  68
  69         if ((status & (IFM_AVALID | IFM_ACTIVE)) == IFM_AVALID) {
  70                 media = IFM_ETHER | IFM_NONE; /* XXX ether */
  71         }
  72
  73         if (media == IFM_NONE) {
  74                 /*
  75                  * possible eg. when the phy is not configured.
  76                  */
  77 #if defined(DEBUG)
  78                 printf("%s: IFM_NONE\n", __func__);
  79 #endif /* defined(DEBUG) */
  80                 media = IFM_ETHER | IFM_NONE; /* XXX ether */
  81         }
  82
  83         if (port->port_media == media) {
  84                 return;
  85         }
  86
  87         port->port_media = media;
  88         if (sc->sc_iftop->iftop_portstate) {
  89                 (*sc->sc_iftop->iftop_portstate)(port);
  90         }
  91 }