if_hatm_ioctl.c

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    1 /*-
    2  * Copyright (c) 2001-2003
    3  *      Fraunhofer Institute for Open Communication Systems (FhG Fokus).
    4  *      All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * Author: Hartmut Brandt <harti@freebsd.org>
   28  *
   29  * ForeHE driver.
   30  *
   31  * Ioctl handler.
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD$");
   36 
   37 #include "opt_inet.h"
   38 #include "opt_natm.h"
   39 
   40 #include <sys/types.h>
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/malloc.h>
   44 #include <sys/kernel.h>
   45 #include <sys/bus.h>
   46 #include <sys/errno.h>
   47 #include <sys/conf.h>
   48 #include <sys/module.h>
   49 #include <sys/queue.h>
   50 #include <sys/syslog.h>
   51 #include <sys/condvar.h>
   52 #include <sys/sysctl.h>
   53 #include <vm/uma.h>
   54 
   55 #include <sys/sockio.h>
   56 #include <sys/mbuf.h>
   57 #include <sys/socket.h>
   58 
   59 #include <net/if.h>
   60 #include <net/if_media.h>
   61 #include <net/if_atm.h>
   62 #include <net/route.h>
   63 #include <netinet/in.h>
   64 #include <netinet/if_atm.h>
   65 
   66 #include <machine/bus.h>
   67 #include <machine/resource.h>
   68 #include <sys/bus.h>
   69 #include <sys/rman.h>
   70 #include <dev/pci/pcireg.h>
   71 #include <dev/pci/pcivar.h>
   72 
   73 #include <dev/utopia/utopia.h>
   74 #include <dev/hatm/if_hatmconf.h>
   75 #include <dev/hatm/if_hatmreg.h>
   76 #include <dev/hatm/if_hatmvar.h>
   77 
   78 static u_int hatm_natm_traffic = ATMIO_TRAFFIC_UBR;
   79 static u_int hatm_natm_pcr = 0;
   80 
   81 static int hatm_sysctl_natm_traffic(SYSCTL_HANDLER_ARGS);
   82 
   83 SYSCTL_DECL(_hw_atm);
   84 
   85 SYSCTL_PROC(_hw_atm, OID_AUTO, natm_traffic, CTLTYPE_UINT | CTLFLAG_RW,
   86     &hatm_natm_traffic, sizeof(hatm_natm_traffic), hatm_sysctl_natm_traffic,
   87     "IU", "traffic type for NATM connections");
   88 SYSCTL_UINT(_hw_atm, OID_AUTO, natm_pcr, CTLFLAG_RW,
   89     &hatm_natm_pcr, 0, "PCR for NATM connections");
   90 
   91 /*
   92  * Try to open the given VCC.
   93  */
   94 static int
   95 hatm_open_vcc(struct hatm_softc *sc, struct atmio_openvcc *arg)
   96 {
   97         u_int cid;
   98         struct hevcc *vcc;
   99         int error = 0;
  100 
  101         DBG(sc, VCC, ("Open VCC: %u.%u flags=%#x", arg->param.vpi,
  102             arg->param.vci, arg->param.flags));
  103 
  104         if ((arg->param.vpi & ~HE_VPI_MASK) ||
  105             (arg->param.vci & ~HE_VCI_MASK) ||
  106             (arg->param.vci == 0))
  107                 return (EINVAL);
  108         cid = HE_CID(arg->param.vpi, arg->param.vci);
  109 
  110         if ((arg->param.flags & ATMIO_FLAG_NOTX) &&
  111             (arg->param.flags & ATMIO_FLAG_NORX))
  112                 return (EINVAL);
  113 
  114         vcc = uma_zalloc(sc->vcc_zone, M_NOWAIT | M_ZERO);
  115         if (vcc == NULL)
  116                 return (ENOMEM);
  117 
  118         mtx_lock(&sc->mtx);
  119         if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  120                 error = EIO;
  121                 goto done;
  122         }
  123         if (sc->vccs[cid] != NULL) {
  124                 error = EBUSY;
  125                 goto done;
  126         }
  127         vcc->param = arg->param;
  128         vcc->rxhand = arg->rxhand;
  129         switch (vcc->param.aal) {
  130 
  131           case ATMIO_AAL_0:
  132           case ATMIO_AAL_5:
  133           case ATMIO_AAL_RAW:
  134                 break;
  135 
  136           default:
  137                 error = EINVAL;
  138                 goto done;
  139         }
  140         switch (vcc->param.traffic) {
  141 
  142           case ATMIO_TRAFFIC_UBR:
  143           case ATMIO_TRAFFIC_CBR:
  144           case ATMIO_TRAFFIC_ABR:
  145                 break;
  146 
  147           default:
  148                 error = EINVAL;
  149                 goto done;
  150         }
  151         vcc->ntpds = 0;
  152         vcc->chain = vcc->last = NULL;
  153         vcc->ibytes = vcc->ipackets = 0;
  154         vcc->obytes = vcc->opackets = 0;
  155 
  156         if (!(vcc->param.flags & ATMIO_FLAG_NOTX) &&
  157              (error = hatm_tx_vcc_can_open(sc, cid, vcc)) != 0)
  158                 goto done;
  159 
  160         /* ok - go ahead */
  161         sc->vccs[cid] = vcc;
  162         hatm_load_vc(sc, cid, 0);
  163 
  164         /* don't free below */
  165         vcc = NULL;
  166         sc->open_vccs++;
  167 
  168   done:
  169         mtx_unlock(&sc->mtx);
  170         if (vcc != NULL)
  171                 uma_zfree(sc->vcc_zone, vcc);
  172         return (error);
  173 }
  174 
  175 void
  176 hatm_load_vc(struct hatm_softc *sc, u_int cid, int reopen)
  177 {
  178         struct hevcc *vcc = sc->vccs[cid];
  179 
  180         if (!(vcc->param.flags & ATMIO_FLAG_NOTX))
  181                 hatm_tx_vcc_open(sc, cid);
  182         if (!(vcc->param.flags & ATMIO_FLAG_NORX))
  183                 hatm_rx_vcc_open(sc, cid);
  184 
  185         if (reopen)
  186                 return;
  187 
  188         /* inform management about non-NG and NG-PVCs */
  189         if (!(vcc->param.flags & ATMIO_FLAG_NG) ||
  190              (vcc->param.flags & ATMIO_FLAG_PVC))
  191                 ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), vcc->param.vpi,
  192                     vcc->param.vci, 1);
  193 }
  194 
  195 /*
  196  * VCC has been finally closed.
  197  */
  198 void
  199 hatm_vcc_closed(struct hatm_softc *sc, u_int cid)
  200 {
  201         struct hevcc *vcc = sc->vccs[cid];
  202 
  203         /* inform management about non-NG and NG-PVCs */
  204         if (!(vcc->param.flags & ATMIO_FLAG_NG) ||
  205             (vcc->param.flags & ATMIO_FLAG_PVC))
  206                 ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), HE_VPI(cid), HE_VCI(cid), 0);
  207 
  208         sc->open_vccs--;
  209         uma_zfree(sc->vcc_zone, vcc);
  210         sc->vccs[cid] = NULL;
  211 }
  212 
  213 /*
  214  * Try to close the given VCC
  215  */
  216 static int
  217 hatm_close_vcc(struct hatm_softc *sc, struct atmio_closevcc *arg)
  218 {
  219         u_int cid;
  220         struct hevcc *vcc;
  221         int error = 0;
  222 
  223         DBG(sc, VCC, ("Close VCC: %u.%u", arg->vpi, arg->vci));
  224 
  225         if((arg->vpi & ~HE_VPI_MASK) ||
  226            (arg->vci & ~HE_VCI_MASK) ||
  227            (arg->vci == 0))
  228                 return (EINVAL);
  229         cid = HE_CID(arg->vpi, arg->vci);
  230 
  231         mtx_lock(&sc->mtx);
  232         vcc = sc->vccs[cid];
  233         if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  234                 error = EIO;
  235                 goto done;
  236         }
  237 
  238         if (vcc == NULL || !(vcc->vflags & HE_VCC_OPEN)) {
  239                 error = ENOENT;
  240                 goto done;
  241         }
  242 
  243         if (vcc->vflags & HE_VCC_TX_OPEN)
  244                 hatm_tx_vcc_close(sc, cid);
  245         if (vcc->vflags & HE_VCC_RX_OPEN)
  246                 hatm_rx_vcc_close(sc, cid);
  247 
  248         if (vcc->param.flags & ATMIO_FLAG_ASYNC)
  249                 goto done;
  250 
  251         while ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING) &&
  252                (vcc->vflags & (HE_VCC_TX_CLOSING | HE_VCC_RX_CLOSING)))
  253                 cv_wait(&sc->vcc_cv, &sc->mtx);
  254 
  255         if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  256                 error = EIO;
  257                 goto done;
  258         }
  259 
  260         if (!(vcc->vflags & ATMIO_FLAG_NOTX))
  261                 hatm_tx_vcc_closed(sc, cid);
  262 
  263         hatm_vcc_closed(sc, cid);
  264 
  265   done:
  266         mtx_unlock(&sc->mtx);
  267         return (error);
  268 }
  269 
  270 /*
  271  * IOCTL handler
  272  */
  273 int
  274 hatm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
  275 {
  276         struct ifreq *ifr = (struct ifreq *)data;
  277         struct ifaddr *ifa = (struct ifaddr *)data;
  278         struct hatm_softc *sc = ifp->if_softc;
  279         struct atmio_vcctable *vtab;
  280         int error = 0;
  281 
  282         switch (cmd) {
  283 
  284           case SIOCSIFADDR:
  285                 mtx_lock(&sc->mtx);
  286                 ifp->if_flags |= IFF_UP;
  287                 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
  288                         hatm_initialize(sc);
  289                 switch (ifa->ifa_addr->sa_family) {
  290 
  291 #ifdef INET
  292                   case AF_INET:
  293                   case AF_INET6:
  294                         ifa->ifa_rtrequest = atm_rtrequest;
  295                         break;
  296 #endif
  297                   default:
  298                         break;
  299                 }
  300                 mtx_unlock(&sc->mtx);
  301                 break;
  302 
  303           case SIOCSIFFLAGS:
  304                 mtx_lock(&sc->mtx);
  305                 if (ifp->if_flags & IFF_UP) {
  306                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  307                                 hatm_initialize(sc);
  308                         }
  309                 } else {
  310                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
  311                                 hatm_stop(sc);
  312                         }
  313                 }
  314                 mtx_unlock(&sc->mtx);
  315                 break;
  316 
  317           case SIOCGIFMEDIA:
  318           case SIOCSIFMEDIA:
  319                 error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd);
  320                 break;
  321 
  322         case SIOCSIFMTU:
  323                 /*
  324                  * Set the interface MTU.
  325                  */
  326                 if (ifr->ifr_mtu > ATMMTU)
  327                         error = EINVAL;
  328                 else
  329                         ifp->if_mtu = ifr->ifr_mtu;
  330                 break;
  331 
  332           case SIOCATMGVCCS:
  333                 /* return vcc table */
  334                 vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
  335                     HE_MAX_VCCS, sc->open_vccs, &sc->mtx, 1);
  336                 error = copyout(vtab, ifr->ifr_data, sizeof(*vtab) +
  337                     vtab->count * sizeof(vtab->vccs[0]));
  338                 free(vtab, M_DEVBUF);
  339                 break;
  340 
  341           case SIOCATMGETVCCS:  /* netgraph internal use */
  342                 vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
  343                     HE_MAX_VCCS, sc->open_vccs, &sc->mtx, 0);
  344                 if (vtab == NULL) {
  345                         error = ENOMEM;
  346                         break;
  347                 }
  348                 *(void **)data = vtab;
  349                 break;
  350 
  351           case SIOCATMOPENVCC:          /* kernel internal use */
  352                 error = hatm_open_vcc(sc, (struct atmio_openvcc *)data);
  353                 break;
  354 
  355           case SIOCATMCLOSEVCC:         /* kernel internal use */
  356                 error = hatm_close_vcc(sc, (struct atmio_closevcc *)data);
  357                 break;
  358 
  359           default:
  360                 DBG(sc, IOCTL, ("cmd=%08lx arg=%p", cmd, data));
  361                 error = EINVAL;
  362                 break;
  363         }
  364 
  365         return (error);
  366 }
  367 
  368 static int
  369 hatm_sysctl_natm_traffic(SYSCTL_HANDLER_ARGS)
  370 {
  371         int error;
  372         int tmp;
  373 
  374         tmp = hatm_natm_traffic;
  375         error = sysctl_handle_int(oidp, &tmp, 0, req);
  376         if (error != 0 || req->newptr == NULL)
  377                 return (error);
  378 
  379         if (tmp != ATMIO_TRAFFIC_UBR && tmp != ATMIO_TRAFFIC_CBR)
  380                 return (EINVAL);
  381 
  382         hatm_natm_traffic = tmp;
  383         return (0);
  384 }
Cache object: 9b25633d2a938e958af4afdc9883c2e7
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FreeBSD/Linux Kernel Cross Reference sys/dev/hatm/if_hatm_ioctl.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/hatm/if_hatm_ioctl.c
