VBoxNetAdp-freebsd.c revision 41ca46e5127405aab2b9014db90bfcd8684083b8
/* $Id$ */
/** @file
* VBoxNetAdp - Virtual Network Adapter Driver (Host), FreeBSD Specific Code.
*/
/*-
* Copyright (c) 2009 Fredrik Lindberg <fli@shapeshifter.se>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <sys/param.h>
#undef PVM
#include <sys/types.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/ethernet.h>
#include <net/bpf.h>
#define LOG_GROUP LOG_GROUP_NET_ADP_DRV
#include <VBox/version.h>
#include <VBox/err.h>
#include <VBox/log.h>
#include <iprt/initterm.h>
#include <iprt/string.h>
#include <iprt/spinlock.h>
#include <iprt/process.h>
#include <iprt/assert.h>
#include <iprt/uuid.h>
#include <iprt/alloc.h>
#include <iprt/err.h>
#define VBOXNETADP_OS_SPECFIC 1
#include "../VBoxNetAdpInternal.h"
static int VBoxNetAdpFreeBSDCtrlioctl(struct cdev *, u_long, caddr_t, int flags,
struct thread *);
static struct cdevsw vboxnetadp_cdevsw =
{
.d_version = D_VERSION,
.d_ioctl = VBoxNetAdpFreeBSDCtrlioctl,
.d_read = (d_read_t *)nullop,
.d_write = (d_write_t *)nullop,
.d_name = VBOXNETADP_CTL_DEV_NAME,
};
static struct cdev *VBoxNetAdpFreeBSDcdev;
static int VBoxNetAdpFreeBSDModuleEvent(struct module *, int, void *);
static moduledata_t g_VBoxNetAdpFreeBSDModule = {
"vboxnetadp",
VBoxNetAdpFreeBSDModuleEvent,
NULL
};
/** Declare the module as a pseudo device. */
DECLARE_MODULE(vboxnetadp, g_VBoxNetAdpFreeBSDModule, SI_SUB_PSEUDO, SI_ORDER_ANY);
MODULE_VERSION(vboxnetadp, 1);
MODULE_DEPEND(vboxnetadp, vboxdrv, 1, 1, 1);
MODULE_DEPEND(vboxnetadp, vboxnetflt, 1, 1, 1);
/**
* Module event handler
*/
static int
VBoxNetAdpFreeBSDModuleEvent(struct module *pMod, int enmEventType, void *pvArg)
{
int rc = 0;
Log(("VBoxNetAdpFreeBSDModuleEvent\n"));
switch (enmEventType)
{
case MOD_LOAD:
rc = RTR0Init(0);
if (RT_FAILURE(rc))
{
Log(("RTR0Init failed %d\n", rc));
return RTErrConvertToErrno(rc);
}
rc = vboxNetAdpInit();
if (RT_FAILURE(rc))
{
RTR0Term();
Log(("vboxNetAdpInit failed %d\n", rc));
return RTErrConvertToErrno(rc);
}
/* Create dev node */
VBoxNetAdpFreeBSDcdev = make_dev(&vboxnetadp_cdevsw, 0,
UID_ROOT, GID_WHEEL, 0600, VBOXNETADP_CTL_DEV_NAME);
break;
case MOD_UNLOAD:
vboxNetAdpShutdown();
destroy_dev(VBoxNetAdpFreeBSDcdev);
RTR0Term();
break;
case MOD_SHUTDOWN:
case MOD_QUIESCE:
default:
return EOPNOTSUPP;
}
if (RT_SUCCESS(rc))
return 0;
return RTErrConvertToErrno(rc);
}
/**
* Device I/O Control entry point.
*/
static int
VBoxNetAdpFreeBSDCtrlioctl(struct cdev *dev, u_long iCmd, caddr_t data, int flags, struct thread *td)
{
PVBOXNETADP pAdp;
PVBOXNETADPREQ pReq = (PVBOXNETADPREQ)data;
struct ifnet *ifp;
int rc;
switch (iCmd)
{
case VBOXNETADP_CTL_ADD:
if ( !(iCmd & IOC_OUT) /* paranoia*/
|| IOCPARM_LEN(iCmd) < sizeof(*pReq))
return EINVAL;
rc = vboxNetAdpCreate(&pAdp, NULL);
if (RT_FAILURE(rc))
return EINVAL;
strncpy(pReq->szName, pAdp->szName, sizeof(pReq->szName) - 1);
pReq->szName[sizeof(pReq->szName) - 1] = '\0';
break;
case VBOXNETADP_CTL_REMOVE:
if (!RTStrEnd(pReq->szName, RT_MIN(sizeof(pReq->szName), IOCPARM_LEN(iCmd))))
return EINVAL;
pAdp = vboxNetAdpFindByName(pReq->szName);
if (!pAdp)
return EINVAL;
rc = vboxNetAdpDestroy(pAdp);
if (RT_FAILURE(rc))
return EINVAL;
break;
default:
return EINVAL;
}
return 0;
}
/**
* Initialize device, just set the running flag.
*/
static void VBoxNetAdpFreeBSDNetinit(void *priv)
{
PVBOXNETADP pThis = priv;
struct ifnet *ifp = pThis->u.s.ifp;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
}
/**
* Transmit packets.
* netflt has already done everything for us so we just hand the
* packets to BPF and increment the packet stats.
*/
static void VBoxNetAdpFreeBSDNetstart(struct ifnet *ifp)
{
PVBOXNETADP pThis = ifp->if_softc;
struct mbuf *m;
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING)
return;
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
{
ifp->if_opackets++;
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
BPF_MTAP(ifp, m);
m_freem(m);
}
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
/**
* Interface ioctl handling
*/
static int VBoxNetAdpFreeBSDNetioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
switch (cmd)
{
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP)
{
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
ifp->if_init(ifp->if_softc);
}
else
{
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
}
break;
default:
return ether_ioctl(ifp, cmd, data);
}
return 0;
}
int vboxNetAdpOsInit(PVBOXNETADP pThis)
{
pThis->u.s.ifp = NULL;
return VINF_SUCCESS;;
}
int vboxNetAdpOsCreate(PVBOXNETADP pThis, PCRTMAC pMac)
{
struct ifnet *ifp;
ifp = if_alloc(IFT_ETHER);
if (ifp == NULL)
return VERR_NO_MEMORY;
if_initname(ifp, VBOXNETADP_NAME, pThis->iUnit);
ifp->if_softc = pThis;
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = VBoxNetAdpFreeBSDNetioctl;
ifp->if_start = VBoxNetAdpFreeBSDNetstart;
ifp->if_init = VBoxNetAdpFreeBSDNetinit;
IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
IFQ_SET_READY(&ifp->if_snd);
ether_ifattach(ifp, (void *)pMac);
ifp->if_baudrate = 0;
strncpy(pThis->szName, ifp->if_xname, VBOXNETADP_MAX_NAME_LEN);
pThis->u.s.ifp = ifp;
return 0;
}
void vboxNetAdpOsDestroy(PVBOXNETADP pThis)
{
struct ifnet *ifp;
ifp = pThis->u.s.ifp;
ether_ifdetach(ifp);
if_free(ifp);
}