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if_agrtimer.c revision 1.6 
      1 /*	$NetBSD: if_agrtimer.c,v 1.6 2010/02/08 17:59:06 dyoung 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_agrtimer.c,v 1.6 2010/02/08 17:59:06 dyoung Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/callout.h>
     34 #include <sys/systm.h>
     35 #include <sys/kernel.h>
     36 
     37 #include <net/if.h>
     38 
     39 #include <net/agr/if_agrvar_impl.h>
     40 #include <net/agr/if_agrsubr.h>
     41 
     42 static void agrtimer_tick(void *);
     43 static int agrtimer_port_tick(struct agr_port *, void *);
     44 
     45 void
     46 agrtimer_init(struct agr_softc *sc)
     47 {
     48 
     49 	callout_init(&sc->sc_callout, 0);
     50 	callout_setfunc(&sc->sc_callout, agrtimer_tick, sc);
     51 }
     52 
     53 void
     54 agrtimer_destroy(struct agr_softc *sc)
     55 {
     56 
     57 	callout_destroy(&sc->sc_callout);
     58 }
     59 
     60 void
     61 agrtimer_start(struct agr_softc *sc)
     62 {
     63 
     64 	callout_schedule(&sc->sc_callout, 0);
     65 }
     66 
     67 void
     68 agrtimer_stop(struct agr_softc *sc)
     69 {
     70 
     71 	callout_stop(&sc->sc_callout);
     72 }
     73 
     74 static void
     75 agrtimer_tick(void *arg)
     76 {
     77 	struct agr_softc *sc = arg;
     78 	const struct agr_iftype_ops *iftop = sc->sc_iftop;
     79 
     80 	KASSERT(iftop);
     81 
     82 	AGR_LOCK(sc);
     83 	if (iftop->iftop_tick) {
     84 		(*iftop->iftop_tick)(sc);
     85 	}
     86 	if (iftop->iftop_porttick) {
     87 		agr_port_foreach(sc, agrtimer_port_tick, sc);
     88 	}
     89 	callout_schedule(&sc->sc_callout, hz);
     90 	AGR_UNLOCK(sc);
     91 }
     92 
     93 static int
     94 agrtimer_port_tick(struct agr_port *port, void *arg)
     95 {
     96 	struct agr_softc *sc = arg;
     97 
     98 	agrport_monitor(port);
     99 	(*sc->sc_iftop->iftop_porttick)(sc, port);
    100 
    101 	return 0;
    102 }
    103