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