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13f4c340ae
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to ifnet.if_drv_flags. Device drivers are now responsible for synchronizing access to these flags, as they are in if_drv_flags. This helps prevent races between the network stack and device driver in maintaining the interface flags field. Many __FreeBSD__ and __FreeBSD_version checks maintained and continued; some less so. Reviewed by: pjd, bz MFC after: 7 days
385 lines
8.8 KiB
C
385 lines
8.8 KiB
C
/*-
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* Copyright (c) 2001-2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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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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* Author: Hartmut Brandt <harti@freebsd.org>
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*
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* ForeHE driver.
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*
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* Ioctl handler.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include "opt_natm.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/errno.h>
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#include <sys/conf.h>
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#include <sys/module.h>
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#include <sys/queue.h>
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#include <sys/syslog.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <vm/uma.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_atm.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/if_atm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/utopia/utopia.h>
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#include <dev/hatm/if_hatmconf.h>
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#include <dev/hatm/if_hatmreg.h>
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#include <dev/hatm/if_hatmvar.h>
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static u_int hatm_natm_traffic = ATMIO_TRAFFIC_UBR;
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static u_int hatm_natm_pcr = 0;
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static int hatm_sysctl_natm_traffic(SYSCTL_HANDLER_ARGS);
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SYSCTL_DECL(_hw_atm);
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SYSCTL_PROC(_hw_atm, OID_AUTO, natm_traffic, CTLTYPE_UINT | CTLFLAG_RW,
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&hatm_natm_traffic, sizeof(hatm_natm_traffic), hatm_sysctl_natm_traffic,
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"IU", "traffic type for NATM connections");
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SYSCTL_UINT(_hw_atm, OID_AUTO, natm_pcr, CTLFLAG_RW,
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&hatm_natm_pcr, 0, "PCR for NATM connections");
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/*
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* Try to open the given VCC.
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*/
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static int
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hatm_open_vcc(struct hatm_softc *sc, struct atmio_openvcc *arg)
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{
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u_int cid;
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struct hevcc *vcc;
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int error = 0;
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DBG(sc, VCC, ("Open VCC: %u.%u flags=%#x", arg->param.vpi,
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arg->param.vci, arg->param.flags));
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if ((arg->param.vpi & ~HE_VPI_MASK) ||
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(arg->param.vci & ~HE_VCI_MASK) ||
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(arg->param.vci == 0))
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return (EINVAL);
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cid = HE_CID(arg->param.vpi, arg->param.vci);
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if ((arg->param.flags & ATMIO_FLAG_NOTX) &&
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(arg->param.flags & ATMIO_FLAG_NORX))
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return (EINVAL);
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vcc = uma_zalloc(sc->vcc_zone, M_NOWAIT | M_ZERO);
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if (vcc == NULL)
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return (ENOMEM);
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mtx_lock(&sc->mtx);
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if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
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error = EIO;
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goto done;
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}
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if (sc->vccs[cid] != NULL) {
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error = EBUSY;
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goto done;
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}
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vcc->param = arg->param;
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vcc->rxhand = arg->rxhand;
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switch (vcc->param.aal) {
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case ATMIO_AAL_0:
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case ATMIO_AAL_5:
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case ATMIO_AAL_RAW:
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break;
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default:
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error = EINVAL;
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goto done;
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}
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switch (vcc->param.traffic) {
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case ATMIO_TRAFFIC_UBR:
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case ATMIO_TRAFFIC_CBR:
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case ATMIO_TRAFFIC_ABR:
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break;
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default:
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error = EINVAL;
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goto done;
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}
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vcc->ntpds = 0;
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vcc->chain = vcc->last = NULL;
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vcc->ibytes = vcc->ipackets = 0;
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vcc->obytes = vcc->opackets = 0;
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if (!(vcc->param.flags & ATMIO_FLAG_NOTX) &&
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(error = hatm_tx_vcc_can_open(sc, cid, vcc)) != 0)
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goto done;
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/* ok - go ahead */
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sc->vccs[cid] = vcc;
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hatm_load_vc(sc, cid, 0);
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/* don't free below */
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vcc = NULL;
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sc->open_vccs++;
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done:
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mtx_unlock(&sc->mtx);
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if (vcc != NULL)
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uma_zfree(sc->vcc_zone, vcc);
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return (error);
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}
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void
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hatm_load_vc(struct hatm_softc *sc, u_int cid, int reopen)
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{
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struct hevcc *vcc = sc->vccs[cid];
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if (!(vcc->param.flags & ATMIO_FLAG_NOTX))
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hatm_tx_vcc_open(sc, cid);
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if (!(vcc->param.flags & ATMIO_FLAG_NORX))
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hatm_rx_vcc_open(sc, cid);
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if (reopen)
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return;
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/* inform management about non-NG and NG-PVCs */
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if (!(vcc->param.flags & ATMIO_FLAG_NG) ||
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(vcc->param.flags & ATMIO_FLAG_PVC))
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ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), vcc->param.vpi,
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vcc->param.vci, 1);
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}
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/*
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* VCC has been finally closed.
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*/
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void
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hatm_vcc_closed(struct hatm_softc *sc, u_int cid)
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{
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struct hevcc *vcc = sc->vccs[cid];
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/* inform management about non-NG and NG-PVCs */
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if (!(vcc->param.flags & ATMIO_FLAG_NG) ||
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(vcc->param.flags & ATMIO_FLAG_PVC))
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ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), HE_VPI(cid), HE_VCI(cid), 0);
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sc->open_vccs--;
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uma_zfree(sc->vcc_zone, vcc);
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sc->vccs[cid] = NULL;
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}
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/*
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* Try to close the given VCC
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*/
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static int
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hatm_close_vcc(struct hatm_softc *sc, struct atmio_closevcc *arg)
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{
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u_int cid;
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struct hevcc *vcc;
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int error = 0;
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DBG(sc, VCC, ("Close VCC: %u.%u", arg->vpi, arg->vci));
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if((arg->vpi & ~HE_VPI_MASK) ||
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(arg->vci & ~HE_VCI_MASK) ||
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(arg->vci == 0))
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return (EINVAL);
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cid = HE_CID(arg->vpi, arg->vci);
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mtx_lock(&sc->mtx);
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vcc = sc->vccs[cid];
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if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
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error = EIO;
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goto done;
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}
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if (vcc == NULL || !(vcc->vflags & HE_VCC_OPEN)) {
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error = ENOENT;
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goto done;
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}
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if (vcc->vflags & HE_VCC_TX_OPEN)
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hatm_tx_vcc_close(sc, cid);
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if (vcc->vflags & HE_VCC_RX_OPEN)
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hatm_rx_vcc_close(sc, cid);
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if (vcc->param.flags & ATMIO_FLAG_ASYNC)
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goto done;
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while ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING) &&
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(vcc->vflags & (HE_VCC_TX_CLOSING | HE_VCC_RX_CLOSING)))
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cv_wait(&sc->vcc_cv, &sc->mtx);
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if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
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error = EIO;
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goto done;
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}
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if (!(vcc->vflags & ATMIO_FLAG_NOTX))
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hatm_tx_vcc_closed(sc, cid);
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hatm_vcc_closed(sc, cid);
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done:
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mtx_unlock(&sc->mtx);
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return (error);
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}
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/*
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* IOCTL handler
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*/
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int
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hatm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct ifreq *ifr = (struct ifreq *)data;
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struct ifaddr *ifa = (struct ifaddr *)data;
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struct hatm_softc *sc = ifp->if_softc;
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struct atmio_vcctable *vtab;
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int error = 0;
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switch (cmd) {
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case SIOCSIFADDR:
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mtx_lock(&sc->mtx);
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ifp->if_flags |= IFF_UP;
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if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
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hatm_initialize(sc);
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switch (ifa->ifa_addr->sa_family) {
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#ifdef INET
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case AF_INET:
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case AF_INET6:
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ifa->ifa_rtrequest = atm_rtrequest;
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break;
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#endif
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default:
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break;
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}
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mtx_unlock(&sc->mtx);
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break;
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case SIOCSIFFLAGS:
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mtx_lock(&sc->mtx);
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if (ifp->if_flags & IFF_UP) {
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if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
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hatm_initialize(sc);
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}
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} else {
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if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
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hatm_stop(sc);
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}
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}
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mtx_unlock(&sc->mtx);
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break;
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case SIOCGIFMEDIA:
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case SIOCSIFMEDIA:
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error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd);
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break;
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case SIOCSIFMTU:
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/*
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* Set the interface MTU.
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*/
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if (ifr->ifr_mtu > ATMMTU)
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error = EINVAL;
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else
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ifp->if_mtu = ifr->ifr_mtu;
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break;
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case SIOCATMGVCCS:
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/* return vcc table */
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vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
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HE_MAX_VCCS, sc->open_vccs, &sc->mtx, 1);
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error = copyout(vtab, ifr->ifr_data, sizeof(*vtab) +
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vtab->count * sizeof(vtab->vccs[0]));
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free(vtab, M_DEVBUF);
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break;
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case SIOCATMGETVCCS: /* netgraph internal use */
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vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
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HE_MAX_VCCS, sc->open_vccs, &sc->mtx, 0);
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if (vtab == NULL) {
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error = ENOMEM;
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break;
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}
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*(void **)data = vtab;
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break;
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case SIOCATMOPENVCC: /* kernel internal use */
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error = hatm_open_vcc(sc, (struct atmio_openvcc *)data);
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break;
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case SIOCATMCLOSEVCC: /* kernel internal use */
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error = hatm_close_vcc(sc, (struct atmio_closevcc *)data);
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break;
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default:
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DBG(sc, IOCTL, ("cmd=%08lx arg=%p", cmd, data));
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error = EINVAL;
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break;
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}
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return (error);
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}
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static int
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hatm_sysctl_natm_traffic(SYSCTL_HANDLER_ARGS)
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{
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int error;
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int tmp;
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tmp = hatm_natm_traffic;
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error = sysctl_handle_int(oidp, &tmp, 0, req);
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if (error != 0 || req->newptr == NULL)
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return (error);
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if (tmp != ATMIO_TRAFFIC_UBR && tmp != ATMIO_TRAFFIC_CBR)
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return (EINVAL);
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hatm_natm_traffic = tmp;
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return (0);
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}
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