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if_agrmonitor.c revision 1.1.8.2
      1  1.1.8.2  yamt /*	$NetBSD: if_agrmonitor.c,v 1.1.8.2 2008/03/24 09:39:09 yamt Exp $	*/
      2      1.1  yamt 
      3      1.1  yamt /*-
      4      1.1  yamt  * Copyright (c)2005 YAMAMOTO Takashi,
      5      1.1  yamt  * All rights reserved.
      6      1.1  yamt  *
      7      1.1  yamt  * Redistribution and use in source and binary forms, with or without
      8      1.1  yamt  * modification, are permitted provided that the following conditions
      9      1.1  yamt  * are met:
     10      1.1  yamt  * 1. Redistributions of source code must retain the above copyright
     11      1.1  yamt  *    notice, this list of conditions and the following disclaimer.
     12      1.1  yamt  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.1  yamt  *    notice, this list of conditions and the following disclaimer in the
     14      1.1  yamt  *    documentation and/or other materials provided with the distribution.
     15      1.1  yamt  *
     16      1.1  yamt  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17      1.1  yamt  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18      1.1  yamt  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19      1.1  yamt  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20      1.1  yamt  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21      1.1  yamt  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22      1.1  yamt  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23      1.1  yamt  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24      1.1  yamt  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25      1.1  yamt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26      1.1  yamt  * SUCH DAMAGE.
     27      1.1  yamt  */
     28      1.1  yamt 
     29      1.1  yamt #include <sys/cdefs.h>
     30  1.1.8.2  yamt __KERNEL_RCSID(0, "$NetBSD: if_agrmonitor.c,v 1.1.8.2 2008/03/24 09:39:09 yamt Exp $");
     31      1.1  yamt 
     32      1.1  yamt #include <sys/param.h>
     33  1.1.8.1  yamt #include <sys/callout.h>
     34      1.1  yamt #include <sys/systm.h>
     35      1.1  yamt 
     36      1.1  yamt #include <net/if.h>
     37      1.1  yamt #include <net/if_media.h>
     38      1.1  yamt 
     39      1.1  yamt #include <net/agr/if_agrvar_impl.h>
     40      1.1  yamt #include <net/agr/if_agrsubr.h>
     41      1.1  yamt 
     42      1.1  yamt void
     43      1.1  yamt agrport_monitor(struct agr_port *port)
     44      1.1  yamt {
     45      1.1  yamt 	struct agr_softc *sc = AGR_SC_FROM_PORT(port);
     46      1.1  yamt 	u_int media;
     47      1.1  yamt 	u_int status;
     48      1.1  yamt 
     49      1.1  yamt 	/*
     50      1.1  yamt 	 * XXX XXX
     51      1.1  yamt 	 * assuming that it's safe to use SIOCGIFMEDIA from callout handler.
     52      1.1  yamt 	 * maybe it's better to have a worker thread.
     53      1.1  yamt 	 */
     54      1.1  yamt 
     55      1.1  yamt 	media = IFM_ETHER | IFM_NONE;
     56      1.1  yamt 	status = IFM_AVALID;
     57      1.1  yamt 	if ((~port->port_ifp->if_flags & (IFF_RUNNING | IFF_UP))
     58      1.1  yamt 	    == 0) {
     59      1.1  yamt 		int error;
     60      1.1  yamt 
     61      1.1  yamt 		error = agr_port_getmedia(port, &media, &status);
     62      1.1  yamt 		if (error) {
     63      1.1  yamt #if defined(DEBUG)
     64      1.1  yamt 			printf("getmedia: error %d\n", error);
     65      1.1  yamt #endif /* defined(DEBUG) */
     66      1.1  yamt 		}
     67      1.1  yamt 	}
     68      1.1  yamt 
     69      1.1  yamt 	if ((status & (IFM_AVALID | IFM_ACTIVE)) == IFM_AVALID) {
     70      1.1  yamt 		media = IFM_ETHER | IFM_NONE; /* XXX ether */
     71      1.1  yamt 	}
     72      1.1  yamt 
     73  1.1.8.2  yamt 	if (media == IFM_NONE) {
     74  1.1.8.2  yamt 		/*
     75  1.1.8.2  yamt 		 * possible eg. when the phy is not configured.
     76  1.1.8.2  yamt 		 */
     77  1.1.8.2  yamt #if defined(DEBUG)
     78  1.1.8.2  yamt 		printf("%s: IFM_NONE\n", __func__);
     79  1.1.8.2  yamt #endif /* defined(DEBUG) */
     80  1.1.8.2  yamt 		media = IFM_ETHER | IFM_NONE; /* XXX ether */
     81  1.1.8.2  yamt 	}
     82  1.1.8.2  yamt 
     83      1.1  yamt 	if (port->port_media == media) {
     84      1.1  yamt 		return;
     85      1.1  yamt 	}
     86      1.1  yamt 
     87      1.1  yamt 	port->port_media = media;
     88      1.1  yamt 	if (sc->sc_iftop->iftop_portstate) {
     89      1.1  yamt 		(*sc->sc_iftop->iftop_portstate)(port);
     90      1.1  yamt 	}
     91      1.1  yamt }
     92