sys/net/agr/if_agrtimer.c

   1 /*      $NetBSD: if_agrtimer.c,v 1.4 2007/05/20 07:57:04 yamt 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 1.4 2007/05/20 07:57:04 yamt 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_start(struct agr_softc *sc)
  55 {
  56
  57         callout_schedule(&sc->sc_callout, 0);
  58 }
  59
  60 void
  61 agrtimer_stop(struct agr_softc *sc)
  62 {
  63
  64         callout_stop(&sc->sc_callout);
  65 }
  66
  67 static void
  68 agrtimer_tick(void *arg)
  69 {
  70         struct agr_softc *sc = arg;
  71         const struct agr_iftype_ops *iftop = sc->sc_iftop;
  72
  73         KASSERT(iftop);
  74
  75         AGR_LOCK(sc);
  76         if (iftop->iftop_tick) {
  77                 (*iftop->iftop_tick)(sc);
  78         }
  79         if (iftop->iftop_porttick) {
  80                 agr_port_foreach(sc, agrtimer_port_tick, sc);
  81         }
  82         callout_schedule(&sc->sc_callout, hz);
  83         AGR_UNLOCK(sc);
  84 }
  85
  86 static int
  87 agrtimer_port_tick(struct agr_port *port, void *arg)
  88 {
  89         struct agr_softc *sc = arg;
  90
  91         agrport_monitor(port);
  92         (*sc->sc_iftop->iftop_porttick)(sc, port);
  93
  94         return 0;
  95 }