175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/* $OpenBSD: if_vether.c,v 1.36 2020/08/28 12:01:48 mvs Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2009 Theo de Raadt
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_ether.h>
|
|
|
|
#include "bpfilter.h"
|
|
#if NBPFILTER > 0
|
|
#include <net/bpf.h>
|
|
#endif
|
|
|
|
void vetherattach(int);
|
|
int vetherioctl(struct ifnet *, u_long, caddr_t);
|
|
void vetherqstart(struct ifqueue *);
|
|
int vether_clone_create(struct if_clone *, int);
|
|
int vether_clone_destroy(struct ifnet *);
|
|
int vether_media_change(struct ifnet *);
|
|
void vether_media_status(struct ifnet *, struct ifmediareq *);
|
|
|
|
struct vether_softc {
|
|
struct arpcom sc_ac;
|
|
struct ifmedia sc_media;
|
|
};
|
|
|
|
struct if_clone vether_cloner =
|
|
IF_CLONE_INITIALIZER("vether", vether_clone_create, vether_clone_destroy);
|
|
|
|
int
|
|
vether_media_change(struct ifnet *ifp)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
vether_media_status(struct ifnet *ifp, struct ifmediareq *imr)
|
|
{
|
|
imr->ifm_active = IFM_ETHER | IFM_AUTO;
|
|
imr->ifm_status = IFM_AVALID | IFM_ACTIVE;
|
|
}
|
|
|
|
void
|
|
vetherattach(int nvether)
|
|
{
|
|
if_clone_attach(&vether_cloner);
|
|
}
|
|
|
|
int
|
|
vether_clone_create(struct if_clone *ifc, int unit)
|
|
{
|
|
struct ifnet *ifp;
|
|
struct vether_softc *sc;
|
|
|
|
sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
|
|
ifp = &sc->sc_ac.ac_if;
|
|
snprintf(ifp->if_xname, sizeof ifp->if_xname, "vether%d", unit);
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
ether_fakeaddr(ifp);
|
|
|
|
ifp->if_softc = sc;
|
|
ifp->if_ioctl = vetherioctl;
|
|
ifp->if_qstart = vetherqstart;
|
|
|
|
ifp->if_hardmtu = ETHER_MAX_HARDMTU_LEN;
|
|
ifp->if_capabilities = IFCAP_VLAN_MTU;
|
|
ifp->if_xflags = IFXF_CLONED | IFXF_MPSAFE;
|
|
|
|
ifmedia_init(&sc->sc_media, 0, vether_media_change,
|
|
vether_media_status);
|
|
ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL);
|
|
ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO);
|
|
|
|
if_attach(ifp);
|
|
ether_ifattach(ifp);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
vether_clone_destroy(struct ifnet *ifp)
|
|
{
|
|
struct vether_softc *sc = ifp->if_softc;
|
|
|
|
ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY);
|
|
ether_ifdetach(ifp);
|
|
if_detach(ifp);
|
|
free(sc, M_DEVBUF, sizeof(*sc));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* The bridge has magically already done all the work for us,
|
|
* and we only need to discard the packets.
|
|
*/
|
|
void
|
|
vetherqstart(struct ifqueue *ifq)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
while ((m = ifq_dequeue(ifq)) != NULL) {
|
|
#if NBPFILTER > 0
|
|
struct ifnet *ifp = ifq->ifq_if;
|
|
|
|
if (ifp->if_bpf)
|
|
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_OUT);
|
|
#endif /* NBPFILTER > 0 */
|
|
|
|
m_freem(m);
|
|
}
|
|
}
|
|
|
|
int
|
|
vetherioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
|
{
|
|
struct vether_softc *sc = (struct vether_softc *)ifp->if_softc;
|
|
struct ifreq *ifr = (struct ifreq *)data;
|
|
int error = 0, link_state;
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
/* FALLTHROUGH */
|
|
|
|
case SIOCSIFFLAGS:
|
|
if (ifp->if_flags & IFF_UP) {
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
link_state = LINK_STATE_UP;
|
|
} else {
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
link_state = LINK_STATE_DOWN;
|
|
}
|
|
if (ifp->if_link_state != link_state) {
|
|
ifp->if_link_state = link_state;
|
|
if_link_state_change(ifp);
|
|
}
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
break;
|
|
|
|
case SIOCGIFMEDIA:
|
|
case SIOCSIFMEDIA:
|
|
error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
|
|
break;
|
|
|
|
default:
|
|
error = ether_ioctl(ifp, &sc->sc_ac, cmd, data);
|
|
}
|
|
return (error);
|
|
}
|