1/* $NetBSD: if_agrtimer.c,v 1.7 2017/01/28 22:56:09 maya 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 1.7 2017/01/28 22:56:09 maya 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 42static void agrtimer_tick(void *); 43static void agrtimer_work(struct work *, void *); 44static int agrtimer_port_tick(struct agr_port *, void *); 45 46int 47agrtimer_init(struct agr_softc *sc) 48{ 49 int error; 50 51 error = workqueue_create(&sc->sc_wq, "agrmon", 52 agrtimer_work, sc, PRI_SOFTNET, IPL_SOFTNET, 0); 53 if (error) 54 return error; 55 56 callout_init(&sc->sc_callout, 0); 57 callout_setfunc(&sc->sc_callout, agrtimer_tick, sc); 58 return 0; 59} 60 61void 62agrtimer_destroy(struct agr_softc *sc) 63{ 64 65 callout_destroy(&sc->sc_callout); 66 workqueue_destroy(sc->sc_wq); 67} 68 69void 70agrtimer_start(struct agr_softc *sc) 71{ 72 73 callout_schedule(&sc->sc_callout, 0); 74} 75 76void 77agrtimer_stop(struct agr_softc *sc) 78{ 79 80 callout_stop(&sc->sc_callout); 81} 82 83static void 84agrtimer_tick(void *arg) 85{ 86 struct agr_softc *sc = arg; 87 88 workqueue_enqueue(sc->sc_wq, &sc->sc_wk, NULL); 89} 90 91static void 92agrtimer_work(struct work *wk, void *arg) 93{ 94 struct agr_softc *sc = arg; 95 const struct agr_iftype_ops *iftop = sc->sc_iftop; 96 97 KASSERT(iftop); 98 99 AGR_LOCK(sc); 100 if (iftop->iftop_tick) { 101 (*iftop->iftop_tick)(sc); 102 } 103 if (iftop->iftop_porttick) { 104 agr_port_foreach(sc, agrtimer_port_tick, sc); 105 } 106 callout_schedule(&sc->sc_callout, hz); 107 AGR_UNLOCK(sc); 108} 109 110static int 111agrtimer_port_tick(struct agr_port *port, void *arg) 112{ 113 struct agr_softc *sc = arg; 114 115 agrport_monitor(port); 116 (*sc->sc_iftop->iftop_porttick)(sc, port); 117 118 return 0; 119} 120