if_patm_ioctl.c

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    1 /*-
    2  * Copyright (c) 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  * Driver for IDT77252 based cards like ProSum's.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: releng/8.3/sys/dev/patm/if_patm_ioctl.c 148887 2005-08-09 10:20:02Z rwatson $");
   34 
   35 #include "opt_inet.h"
   36 #include "opt_natm.h"
   37 
   38 #include <sys/types.h>
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/malloc.h>
   42 #include <sys/kernel.h>
   43 #include <sys/bus.h>
   44 #include <sys/errno.h>
   45 #include <sys/conf.h>
   46 #include <sys/module.h>
   47 #include <sys/lock.h>
   48 #include <sys/mutex.h>
   49 #include <sys/sysctl.h>
   50 #include <sys/queue.h>
   51 #include <sys/condvar.h>
   52 #include <vm/uma.h>
   53 
   54 #include <sys/sockio.h>
   55 #include <sys/mbuf.h>
   56 #include <sys/socket.h>
   57 
   58 #include <net/if.h>
   59 #include <net/if_media.h>
   60 #include <net/if_atm.h>
   61 #include <net/route.h>
   62 #include <netinet/in.h>
   63 #include <netinet/if_atm.h>
   64 
   65 #include <machine/bus.h>
   66 #include <machine/resource.h>
   67 #include <sys/bus.h>
   68 #include <sys/rman.h>
   69 #include <sys/mbpool.h>
   70 
   71 #include <dev/utopia/utopia.h>
   72 #include <dev/patm/idt77252reg.h>
   73 #include <dev/patm/if_patmvar.h>
   74 
   75 /*
   76  * Open the VCC with the given parameters
   77  */
   78 static int
   79 patm_open_vcc(struct patm_softc *sc, struct atmio_openvcc *arg)
   80 {
   81         u_int cid;
   82         struct patm_vcc *vcc;
   83         int error = 0;
   84 
   85         patm_debug(sc, VCC, "Open VCC: %u.%u flags=%#x", arg->param.vpi,
   86             arg->param.vci, arg->param.flags);
   87 
   88         if (!LEGAL_VPI(sc, arg->param.vpi) || !LEGAL_VCI(sc, arg->param.vci))
   89                 return (EINVAL);
   90         if (arg->param.vci == 0 && (arg->param.vpi != 0 ||
   91             !(arg->param.flags & ATMIO_FLAG_NOTX) ||
   92             arg->param.aal != ATMIO_AAL_RAW))
   93                 return (EINVAL);
   94         cid = PATM_CID(sc, arg->param.vpi, arg->param.vci);
   95 
   96         if ((arg->param.flags & ATMIO_FLAG_NOTX) &&
   97             (arg->param.flags & ATMIO_FLAG_NORX))
   98                 return (EINVAL);
   99 
  100         if ((arg->param.traffic == ATMIO_TRAFFIC_ABR) &&
  101             (arg->param.flags & (ATMIO_FLAG_NOTX | ATMIO_FLAG_NORX)))
  102                 return (EINVAL);
  103 
  104         /* allocate vcc */
  105         vcc = uma_zalloc(sc->vcc_zone, M_NOWAIT | M_ZERO);
  106         if (vcc == NULL)
  107                 return (ENOMEM);
  108 
  109         mtx_lock(&sc->mtx);
  110         if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  111                 /* stopped while we have analyzed the arguments */
  112                 error = EIO;
  113                 goto done;
  114         }
  115         if (sc->vccs[cid] != NULL) {
  116                 /* ups, already open */
  117                 error = EBUSY;
  118                 goto done;
  119         }
  120 
  121         /* check some parameters */
  122         vcc->cid = cid;
  123         vcc->vcc = arg->param;
  124         vcc->vflags = 0;
  125         vcc->rxhand = arg->rxhand;
  126         switch (vcc->vcc.aal) {
  127 
  128           case ATMIO_AAL_0:
  129           case ATMIO_AAL_34:
  130           case ATMIO_AAL_5:
  131                 break;
  132 
  133           case ATMIO_AAL_RAW:
  134                 if (arg->param.vci == 0 &&
  135                     !(arg->param.flags & ATMIO_FLAG_NOTX)) {
  136                         error = EINVAL;
  137                         goto done;
  138                 }
  139                 break;
  140 
  141           default:
  142                 error = EINVAL;
  143                 goto done;
  144         }
  145         switch (vcc->vcc.traffic) {
  146 
  147           case ATMIO_TRAFFIC_VBR:
  148           case ATMIO_TRAFFIC_UBR:
  149           case ATMIO_TRAFFIC_CBR:
  150           case ATMIO_TRAFFIC_ABR:
  151                 break;
  152 
  153           default:
  154                 error = EINVAL;
  155                 goto done;
  156         }
  157 
  158         /* initialize */
  159         vcc->chain = NULL;
  160         vcc->last = NULL;
  161         vcc->ibytes = vcc->ipackets = 0;
  162         vcc->obytes = vcc->opackets = 0;
  163 
  164         /* ask the TX and RX sides */
  165         patm_debug(sc, VCC, "Open VCC: asking Rx/Tx");
  166         if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX) &&
  167              (error = patm_tx_vcc_can_open(sc, vcc)) != 0)
  168                 goto done;
  169         if (!(vcc->vcc.flags & ATMIO_FLAG_NORX) &&
  170              (error = patm_rx_vcc_can_open(sc, vcc)) != 0)
  171                 goto done;
  172 
  173         /* ok - go ahead */
  174         sc->vccs[cid] = vcc;
  175         patm_load_vc(sc, vcc, 0);
  176 
  177         /* don't free below */
  178         vcc = NULL;
  179         sc->vccs_open++;
  180 
  181         /* done */
  182   done:
  183         mtx_unlock(&sc->mtx);
  184         if (vcc != NULL)
  185                 uma_zfree(sc->vcc_zone, vcc);
  186         return (error);
  187 }
  188 
  189 void
  190 patm_load_vc(struct patm_softc *sc, struct patm_vcc *vcc, int reload)
  191 {
  192 
  193         patm_debug(sc, VCC, "Open VCC: opening");
  194         if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
  195                 patm_tx_vcc_open(sc, vcc);
  196         if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
  197                 patm_rx_vcc_open(sc, vcc);
  198 
  199         if (!reload) {
  200                 /* inform management about non-NG and NG-PVCs */
  201                 if (!(vcc->vcc.flags & ATMIO_FLAG_NG) ||
  202                      (vcc->vcc.flags & ATMIO_FLAG_PVC))
  203                         ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), vcc->vcc.vpi,
  204                             vcc->vcc.vci, 1);
  205         }
  206 
  207         patm_debug(sc, VCC, "Open VCC: now open");
  208 }
  209 
  210 /*
  211  * Try to close the given VCC
  212  */
  213 static int
  214 patm_close_vcc(struct patm_softc *sc, struct atmio_closevcc *arg)
  215 {
  216         u_int cid;
  217         struct patm_vcc *vcc;
  218         int error = 0;
  219 
  220         patm_debug(sc, VCC, "Close VCC: %u.%u", arg->vpi, arg->vci);
  221 
  222         if (!LEGAL_VPI(sc, arg->vpi) || !LEGAL_VCI(sc, arg->vci))
  223                 return (EINVAL);
  224         cid = PATM_CID(sc, arg->vpi, arg->vci);
  225 
  226         mtx_lock(&sc->mtx);
  227         if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  228                 /* stopped while we have analyzed the arguments */
  229                 error = EIO;
  230                 goto done;
  231         }
  232 
  233         vcc = sc->vccs[cid];
  234         if (vcc == NULL || !(vcc->vflags & PATM_VCC_OPEN)) {
  235                 error = ENOENT;
  236                 goto done;
  237         }
  238 
  239         if (vcc->vflags & PATM_VCC_TX_OPEN)
  240                 patm_tx_vcc_close(sc, vcc);
  241         if (vcc->vflags & PATM_VCC_RX_OPEN)
  242                 patm_rx_vcc_close(sc, vcc);
  243 
  244         if (vcc->vcc.flags & ATMIO_FLAG_ASYNC)
  245                 goto done;
  246 
  247         while (vcc->vflags & (PATM_VCC_TX_CLOSING | PATM_VCC_RX_CLOSING)) {
  248                 cv_wait(&sc->vcc_cv, &sc->mtx);
  249                 if (!(sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  250                         /* ups, has been stopped */
  251                         error = EIO;
  252                         goto done;
  253                 }
  254         }
  255 
  256         if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
  257                 patm_tx_vcc_closed(sc, vcc);
  258         if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
  259                 patm_rx_vcc_closed(sc, vcc);
  260 
  261         patm_vcc_closed(sc, vcc);
  262 
  263   done:
  264         mtx_unlock(&sc->mtx);
  265 
  266         return (error);
  267 }
  268 
  269 /*
  270  * VCC has been finally closed.
  271  */
  272 void
  273 patm_vcc_closed(struct patm_softc *sc, struct patm_vcc *vcc)
  274 {
  275 
  276         /* inform management about non-NG and NG-PVCs */
  277         if (!(vcc->vcc.flags & ATMIO_FLAG_NG) ||
  278             (vcc->vcc.flags & ATMIO_FLAG_PVC))
  279                 ATMEV_SEND_VCC_CHANGED(IFP2IFATM(sc->ifp), vcc->vcc.vpi,
  280                     vcc->vcc.vci, 0);
  281 
  282         sc->vccs_open--;
  283         sc->vccs[vcc->cid] = NULL;
  284         uma_zfree(sc->vcc_zone, vcc);
  285 }
  286 
  287 int
  288 patm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
  289 {
  290         struct ifreq *ifr = (struct ifreq *)data;
  291         struct ifaddr *ifa = (struct ifaddr *)data;
  292         struct patm_softc *sc = ifp->if_softc;
  293         int error = 0;
  294         uint32_t cfg;
  295         struct atmio_vcctable *vtab;
  296 
  297         switch (cmd) {
  298 
  299           case SIOCSIFADDR:
  300                 mtx_lock(&sc->mtx);
  301                 ifp->if_flags |= IFF_UP;
  302                 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
  303                         patm_initialize(sc);
  304                 switch (ifa->ifa_addr->sa_family) {
  305 
  306 #ifdef INET
  307                   case AF_INET:
  308                   case AF_INET6:
  309                         ifa->ifa_rtrequest = atm_rtrequest;
  310                         break;
  311 #endif
  312                   default:
  313                         break;
  314                 }
  315                 mtx_unlock(&sc->mtx);
  316                 break;
  317 
  318           case SIOCSIFFLAGS:
  319                 mtx_lock(&sc->mtx);
  320                 if (ifp->if_flags & IFF_UP) {
  321                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
  322                                 patm_initialize(sc);
  323                         }
  324                 } else {
  325                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
  326                                 patm_stop(sc);
  327                         }
  328                 }
  329                 mtx_unlock(&sc->mtx);
  330                 break;
  331 
  332           case SIOCGIFMEDIA:
  333           case SIOCSIFMEDIA:
  334                 error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd);
  335 
  336                 /*
  337                  * We need to toggle unassigned/idle cells ourself because
  338                  * the 77252 generates null cells for spacing. When switching
  339                  * null cells of it gets the timing wrong.
  340                  */
  341                 mtx_lock(&sc->mtx);
  342                 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
  343                         if (sc->utopia.state & UTP_ST_UNASS) {
  344                                 if (!(sc->flags & PATM_UNASS)) {
  345                                         cfg = patm_nor_read(sc, IDT_NOR_CFG);
  346                                         cfg &= ~IDT_CFG_IDLECLP;
  347                                         patm_nor_write(sc, IDT_NOR_CFG, cfg);
  348                                         sc->flags |= PATM_UNASS;
  349                                 }
  350                         } else {
  351                                 if (sc->flags & PATM_UNASS) {
  352                                         cfg = patm_nor_read(sc, IDT_NOR_CFG);
  353                                         cfg |= IDT_CFG_IDLECLP;
  354                                         patm_nor_write(sc, IDT_NOR_CFG, cfg);
  355                                         sc->flags &= ~PATM_UNASS;
  356                                 }
  357                         }
  358                 } else {
  359                         if (sc->utopia.state & UTP_ST_UNASS)
  360                                 sc->flags |= PATM_UNASS;
  361                         else
  362                                 sc->flags &= ~PATM_UNASS;
  363                 }
  364                 mtx_unlock(&sc->mtx);
  365                 break;
  366 
  367           case SIOCSIFMTU:
  368                 /*
  369                  * Set the interface MTU.
  370                  */
  371                 if (ifr->ifr_mtu > ATMMTU)
  372                         error = EINVAL;
  373                 else
  374                         ifp->if_mtu = ifr->ifr_mtu;
  375                 break;
  376 
  377           case SIOCATMOPENVCC:          /* kernel internal use */
  378                 error = patm_open_vcc(sc, (struct atmio_openvcc *)data);
  379                 break;
  380 
  381           case SIOCATMCLOSEVCC:         /* kernel internal use */
  382                 error = patm_close_vcc(sc, (struct atmio_closevcc *)data);
  383                 break;
  384 
  385           case SIOCATMGVCCS:    /* external use */
  386                 /* return vcc table */
  387                 vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
  388                     sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 1);
  389                 error = copyout(vtab, ifr->ifr_data, sizeof(*vtab) +
  390                     vtab->count * sizeof(vtab->vccs[0]));
  391                 free(vtab, M_DEVBUF);
  392                 break;
  393 
  394           case SIOCATMGETVCCS:  /* netgraph internal use */
  395                 vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
  396                     sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 0);
  397                 if (vtab == NULL) {
  398                         error = ENOMEM;
  399                         break;
  400                 }
  401                 *(void **)data = vtab;
  402                 break;
  403 
  404           default:
  405                 patm_debug(sc, IOCTL, "unknown cmd=%08lx arg=%p", cmd, data);
  406                 error = EINVAL;
  407                 break;
  408         }
  409 
  410         return (error);
  411 }
Cache object: 683a8036fd651934561be4274cfc77e0
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FreeBSD/Linux Kernel Cross Reference sys/dev/patm/if_patm_ioctl.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/patm/if_patm_ioctl.c
