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 42 static void agrtimer_tick(void *); 43 static void agrtimer_work(struct work *, void *); 44 static int agrtimer_port_tick(struct agr_port *, void *); 45 46 int 47 agrtimer_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 61 void 62 agrtimer_destroy(struct agr_softc *sc) 63 { 64 65 callout_destroy(&sc->sc_callout); 66 workqueue_destroy(sc->sc_wq); 67 } 68 69 void 70 agrtimer_start(struct agr_softc *sc) 71 { 72 73 callout_schedule(&sc->sc_callout, 0); 74 } 75 76 void 77 agrtimer_stop(struct agr_softc *sc) 78 { 79 80 callout_stop(&sc->sc_callout); 81 } 82 83 static void 84 agrtimer_tick(void *arg) 85 { 86 struct agr_softc *sc = arg; 87 88 workqueue_enqueue(sc->sc_wq, &sc->sc_wk, NULL); 89 } 90 91 static void 92 agrtimer_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 } 109 110 static int 111 agrtimer_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