276 lines
6.2 KiB
C
276 lines
6.2 KiB
C
/* $NetBSD: if_agrsubr.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */
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/*-
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* Copyright (c)2005 YAMAMOTO Takashi,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_agrsubr.c,v 1.3 2005/12/11 12:24:54 christos Exp $");
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#include "bpfilter.h"
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/sockio.h>
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#include <net/if.h>
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#include <net/agr/if_agrvar_impl.h>
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#include <net/agr/if_agrsubr.h>
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struct agr_mc_entry {
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TAILQ_ENTRY(agr_mc_entry) ame_q;
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int ame_refcnt;
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struct agr_ifreq ame_ifr; /* XXX waste */
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};
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static struct agr_mc_entry *agr_mc_lookup(struct agr_multiaddrs *,
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const struct ifreq *);
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static int agrport_mc_add_callback(struct agr_port *, void *);
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static int agrport_mc_del_callback(struct agr_port *, void *);
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static int agrmc_mc_add_callback(struct agr_mc_entry *, void *);
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static int agrmc_mc_del_callback(struct agr_mc_entry *, void *);
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static int agr_mc_add(struct agr_multiaddrs *, const struct ifreq *);
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static int agr_mc_del(struct agr_multiaddrs *, const struct ifreq *);
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int
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agr_mc_purgeall(struct agr_softc *sc, struct agr_multiaddrs *ama)
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{
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struct agr_mc_entry *ame;
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int error = 0;
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while ((ame = TAILQ_FIRST(&ama->ama_addrs)) != NULL) {
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error = agr_port_foreach(sc,
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agrport_mc_del_callback, &ame->ame_ifr);
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if (error) {
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/* XXX XXX */
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printf("%s: error %d\n", __func__, error);
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}
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free(ame, M_DEVBUF);
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}
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return error;
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}
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int
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agr_mc_init(struct agr_softc *sc, struct agr_multiaddrs *ama)
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{
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TAILQ_INIT(&ama->ama_addrs);
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return 0;
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}
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/* ==================== */
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static struct agr_mc_entry *
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agr_mc_lookup(struct agr_multiaddrs *ama, const struct ifreq *ifr)
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{
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struct agr_mc_entry *ame;
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const struct sockaddr *sa;
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sa = &ifr->ifr_addr;
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TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) {
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if (!memcmp(&ame->ame_ifr.ifr_ss, sa, sa->sa_len))
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return ame;
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}
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return NULL;
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}
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int
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agr_mc_foreach(struct agr_multiaddrs *ama,
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int (*func)(struct agr_mc_entry *, void *), void *arg)
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{
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struct agr_mc_entry *ame;
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int error = 0;
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TAILQ_FOREACH(ame, &ama->ama_addrs, ame_q) {
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error = (*func)(ame, arg);
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if (error) {
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/*
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* XXX how to recover?
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* we can try to restore setting, but it can also fail..
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*/
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break;
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}
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}
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return error;
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}
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static int
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agr_mc_add(struct agr_multiaddrs *ama, const struct ifreq *ifr)
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{
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struct agr_mc_entry *ame;
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const struct sockaddr *sa;
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ame = agr_mc_lookup(ama, ifr);
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if (ame) {
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ame->ame_refcnt++;
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return 0;
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}
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ame = malloc(sizeof(*ame), M_DEVBUF, M_NOWAIT | M_ZERO);
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if (ame == NULL)
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return ENOMEM;
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sa = &ifr->ifr_addr;
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memcpy(&ame->ame_ifr.ifr_ss, sa, sa->sa_len);
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ame->ame_refcnt = 1;
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return ENETRESET;
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}
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static int
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agr_mc_del(struct agr_multiaddrs *ama, const struct ifreq *ifr)
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{
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struct agr_mc_entry *ame;
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ame = agr_mc_lookup(ama, ifr);
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if (ame == NULL)
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return ENOENT;
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ame->ame_refcnt--;
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if (ame->ame_refcnt > 0)
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return 0;
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free(ame, M_DEVBUF);
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return ENETRESET;
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}
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/* ==================== */
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int
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agr_port_foreach(struct agr_softc *sc,
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int (*func)(struct agr_port *, void *), void *arg)
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{
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struct agr_port *port;
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int error = 0;
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TAILQ_FOREACH(port, &sc->sc_ports, port_q) {
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if ((port->port_flags & (AGRPORT_LARVAL | AGRPORT_DETACHING))) {
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continue;
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}
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error = (func)(port, arg);
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if (error) {
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/*
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* XXX how to recover?
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* we can try to restore setting, but it can also fail..
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*/
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break;
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}
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}
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return error;
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}
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/* ==================== */
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static int
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agrmc_mc_add_callback(struct agr_mc_entry *ame, void *arg)
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{
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return agrport_mc_add_callback(arg, &ame->ame_ifr);
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}
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static int
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agrmc_mc_del_callback(struct agr_mc_entry *ame, void *arg)
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{
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return agrport_mc_del_callback(arg, &ame->ame_ifr);
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}
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int
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agr_configmulti_port(struct agr_multiaddrs *ama, struct agr_port *port,
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boolean_t add)
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{
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return agr_mc_foreach(ama,
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add ? agrmc_mc_add_callback : agrmc_mc_del_callback, port);
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}
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/* -------------------- */
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static int
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agrport_mc_add_callback(struct agr_port *port, void *arg)
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{
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return agrport_ioctl(port, SIOCADDMULTI, arg);
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}
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static int
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agrport_mc_del_callback(struct agr_port *port, void *arg)
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{
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return agrport_ioctl(port, SIOCADDMULTI, arg);
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}
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int
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agr_configmulti_ifreq(struct agr_softc *sc, struct agr_multiaddrs *ama,
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struct ifreq *ifr, boolean_t add)
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{
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int error;
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if (add)
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error = agr_mc_add(ama, ifr);
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else
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error = agr_mc_del(ama, ifr);
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if (error != ENETRESET)
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return error;
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return agr_port_foreach(sc,
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add ? agrport_mc_add_callback : agrport_mc_del_callback, ifr);
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}
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/* ==================== */
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int
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agr_port_getmedia(struct agr_port *port, u_int *media, u_int *status)
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{
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struct ifmediareq ifmr;
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int error;
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memset(&ifmr, 0, sizeof(ifmr));
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ifmr.ifm_count = 0;
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error = agrport_ioctl(port, SIOCGIFMEDIA, (caddr_t)&ifmr);
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if (error == 0) {
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*media = ifmr.ifm_active;
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*status = ifmr.ifm_status;
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}
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return error;
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}
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