sys/netbt/hci_ioctl.c

   1 /* $OpenBSD: hci_ioctl.c,v 1.1 2007/06/01 02:46:11 uwe Exp $ */
   2 /* $NetBSD: hci_ioctl.c,v 1.5 2007/01/04 19:07:03 elad Exp $ */
   3 /* $DragonFly: src/sys/netbt/hci_ioctl.c,v 1.1 2007/12/30 20:02:56 hasso Exp $ */
   4
   5 /*-
   6  * Copyright (c) 2005 Iain Hibbert.
   7  * Copyright (c) 2006 Itronix Inc.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of Itronix Inc. may not be used to endorse
  19  *    or promote products derived from this software without specific
  20  *    prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  26  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  29  * ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/domain.h>
  37 #include <sys/ioccom.h>
  38 #include <sys/kernel.h>
  39 #include <sys/mbuf.h>
  40 #include <sys/proc.h>
  41 #include <sys/systm.h>
  42 #include <sys/thread2.h>
  43 #include <sys/bus.h>
  44
  45 #include <netbt/bluetooth.h>
  46 #include <netbt/hci.h>
  47 #include <netbt/l2cap.h>
  48 #include <netbt/rfcomm.h>
  49
  50 #ifdef BLUETOOTH_DEBUG
  51 #define BDADDR(bd)      (bd).b[5], (bd).b[4], (bd).b[3],        \
  52                         (bd).b[2], (bd).b[1], (bd).b[0]
  53
  54 static void
  55 hci_dump(void)
  56 {
  57         struct hci_unit *unit;
  58         struct hci_link *link;
  59         struct l2cap_channel *chan;
  60         struct rfcomm_session *rs;
  61         struct rfcomm_dlc *dlc;
  62
  63         kprintf("HCI:\n");
  64         TAILQ_FOREACH(unit, &hci_unit_list, hci_next) {
  65                 kprintf("UNIT %s: flags 0x%4.4x, "
  66                         "num_cmd=%d, num_acl=%d, num_sco=%d\n",
  67                         unit->hci_devname, unit->hci_flags,
  68                         unit->hci_num_cmd_pkts,
  69                         unit->hci_num_acl_pkts,
  70                         unit->hci_num_sco_pkts);
  71                 TAILQ_FOREACH(link, &unit->hci_links, hl_next) {
  72                         kprintf("+HANDLE #%d: %s "
  73                             "raddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
  74                             "state %d, refcnt %d\n",
  75                             link->hl_handle,
  76                             (link->hl_type == HCI_LINK_ACL ? "ACL":"SCO"),
  77                             BDADDR(link->hl_bdaddr),
  78                             link->hl_state, link->hl_refcnt);
  79                 }
  80         }
  81
  82         kprintf("L2CAP:\n");
  83         LIST_FOREACH(chan, &l2cap_active_list, lc_ncid) {
  84                 kprintf("CID #%d state %d, psm=0x%4.4x, "
  85                     "laddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
  86                     "raddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
  87                     chan->lc_lcid, chan->lc_state, chan->lc_raddr.bt_psm,
  88                     BDADDR(chan->lc_laddr.bt_bdaddr),
  89                     BDADDR(chan->lc_raddr.bt_bdaddr));
  90         }
  91
  92         LIST_FOREACH(chan, &l2cap_listen_list, lc_ncid) {
  93                 kprintf("LISTEN psm=0x%4.4x, "
  94                     "laddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
  95                     chan->lc_laddr.bt_psm,
  96                     BDADDR(chan->lc_laddr.bt_bdaddr));
  97         }
  98
  99         kprintf("RFCOMM:\n");
 100         LIST_FOREACH(rs, &rfcomm_session_active, rs_next) {
 101                 chan = rs->rs_l2cap;
 102                 kprintf("SESSION: state=%d, flags=0x%4.4x, psm 0x%4.4x "
 103                     "laddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
 104                     "raddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
 105                     rs->rs_state, rs->rs_flags, chan->lc_raddr.bt_psm,
 106                     BDADDR(chan->lc_laddr.bt_bdaddr),
 107                     BDADDR(chan->lc_raddr.bt_bdaddr));
 108                 LIST_FOREACH(dlc, &rs->rs_dlcs, rd_next) {
 109                         kprintf("+DLC channel=%d, dlci=%d, "
 110                             "state=%d, flags=0x%4.4x, rxcred=%d, rxsize=%ld, "
 111                             "txcred=%d, pending=%d, txqlen=%d\n",
 112                             dlc->rd_raddr.bt_channel, dlc->rd_dlci,
 113                             dlc->rd_state, dlc->rd_flags,
 114                             dlc->rd_rxcred, (unsigned long)dlc->rd_rxsize,
 115                             dlc->rd_txcred, dlc->rd_pending,
 116                             (dlc->rd_txbuf ? dlc->rd_txbuf->m_pkthdr.len : 0));
 117                 }
 118         }
 119
 120         LIST_FOREACH(rs, &rfcomm_session_listen, rs_next) {
 121                 chan = rs->rs_l2cap;
 122                 kprintf("LISTEN: psm 0x%4.4x, "
 123                     "laddr=%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
 124                     chan->lc_laddr.bt_psm,
 125                     BDADDR(chan->lc_laddr.bt_bdaddr));
 126                 LIST_FOREACH(dlc, &rs->rs_dlcs, rd_next)
 127                         kprintf("+DLC channel=%d\n", dlc->rd_laddr.bt_channel);
 128         }
 129 }
 130
 131 #undef BDADDR
 132 #endif
 133
 134 int
 135 hci_ioctl(unsigned long cmd, void *data, struct proc *p)
 136 {
 137         struct btreq *btr = data;
 138         struct thread *td = curthread;
 139         struct hci_unit *unit;
 140         int err = 0;
 141
 142         DPRINTFN(1, "cmd %#lx\n", cmd);
 143
 144         switch(cmd) {
 145 #ifdef BLUETOOTH_DEBUG
 146         case SIOCBTDUMP:
 147                 hci_dump();
 148                 return 0;
 149 #endif
 150         /*
 151          * Get unit info based on address rather than name
 152          */
 153         case SIOCGBTINFOA:
 154                 unit = hci_unit_lookup(&btr->btr_bdaddr);
 155                 if (unit == NULL)
 156                         return ENXIO;
 157
 158                 break;
 159
 160         /*
 161          * The remaining ioctl's all use the same btreq structure and
 162          * index on the name of the device, so we look that up first.
 163          */
 164         case SIOCNBTINFO:
 165                 /* empty name means give the first unit */
 166                 if (btr->btr_name[0] == '\0') {
 167                         unit = NULL;
 168                         break;
 169                 }
 170
 171                 /* else fall through and look it up */
 172         case SIOCGBTINFO:
 173         case SIOCSBTFLAGS:
 174         case SIOCSBTPOLICY:
 175         case SIOCSBTPTYPE:
 176         case SIOCGBTSTATS:
 177         case SIOCZBTSTATS:
 178         case SIOCSBTSCOMTU:
 179                 TAILQ_FOREACH(unit, &hci_unit_list, hci_next) {
 180                         if (strncmp(unit->hci_devname, btr->btr_name,
 181                             HCI_DEVNAME_SIZE) == 0)
 182                                 break;
 183                 }
 184
 185                 if (unit == NULL)
 186                         return ENXIO;
 187
 188                 break;
 189
 190         default:        /* not one of mine */
 191                 return EPASSTHROUGH;
 192         }
 193
 194         switch(cmd) {
 195         case SIOCNBTINFO:       /* get next info */
 196                 if (unit)
 197                         unit = TAILQ_NEXT(unit, hci_next);
 198                 else
 199                         unit = TAILQ_FIRST(&hci_unit_list);
 200
 201                 if (unit == NULL) {
 202                         err = ENXIO;
 203                         break;
 204                 }
 205
 206                 /* and fall through to */
 207         case SIOCGBTINFO:       /* get unit info */
 208         case SIOCGBTINFOA:      /* get info by address */
 209                 memset(btr, 0, sizeof(struct btreq));
 210                 strlcpy(btr->btr_name, unit->hci_devname, HCI_DEVNAME_SIZE);
 211                 bdaddr_copy(&btr->btr_bdaddr, &unit->hci_bdaddr);
 212
 213                 btr->btr_flags = unit->hci_flags;
 214
 215                 btr->btr_num_cmd = unit->hci_num_cmd_pkts;
 216                 btr->btr_num_acl = unit->hci_num_acl_pkts;
 217                 btr->btr_num_sco = unit->hci_num_sco_pkts;
 218                 btr->btr_acl_mtu = unit->hci_max_acl_size;
 219                 btr->btr_sco_mtu = unit->hci_max_sco_size;
 220
 221                 btr->btr_packet_type = unit->hci_packet_type;
 222                 btr->btr_link_policy = unit->hci_link_policy;
 223                 break;
 224
 225         case SIOCSBTFLAGS:      /* set unit flags (privileged) */
 226                 err = suser(td);
 227                 if (err)
 228                         break;
 229
 230                 if ((unit->hci_flags & BTF_UP)
 231                     && (btr->btr_flags & BTF_UP) == 0) {
 232                         hci_disable(unit);
 233                         unit->hci_flags &= ~BTF_UP;
 234                 }
 235
 236                 crit_enter();
 237                 unit->hci_flags |= (btr->btr_flags & BTF_INIT);
 238                 crit_exit();
 239
 240                 if ((unit->hci_flags & BTF_UP) == 0
 241                     && (btr->btr_flags & BTF_UP)) {
 242                         err = hci_enable(unit);
 243                         if (err)
 244                                 break;
 245
 246                         crit_enter();
 247                         unit->hci_flags |= BTF_UP;
 248                         crit_exit();
 249                 }
 250
 251                 btr->btr_flags = unit->hci_flags;
 252                 break;
 253
 254         case SIOCSBTPOLICY:     /* set unit link policy (privileged) */
 255                 err = suser(td);
 256                 if (err)
 257                         break;
 258
 259                 unit->hci_link_policy = btr->btr_link_policy;
 260                 unit->hci_link_policy &= unit->hci_lmp_mask;
 261                 btr->btr_link_policy = unit->hci_link_policy;
 262                 break;
 263
 264         case SIOCSBTPTYPE:      /* set unit packet types (privileged) */
 265                 err = suser(td);
 266                 if (err)
 267                         break;
 268
 269                 unit->hci_packet_type = btr->btr_packet_type;
 270                 unit->hci_packet_type &= unit->hci_acl_mask;
 271                 btr->btr_packet_type = unit->hci_packet_type;
 272                 break;
 273
 274         case SIOCGBTSTATS:      /* get unit statistics */
 275                 crit_enter();
 276                 memcpy(&btr->btr_stats, &unit->hci_stats,
 277                         sizeof(struct bt_stats));
 278                 crit_exit();
 279                 break;
 280
 281         case SIOCZBTSTATS:      /* get & reset unit statistics */
 282                 err = suser(td);
 283                 if (err)
 284                         break;
 285
 286                 crit_enter();
 287                 memcpy(&btr->btr_stats, &unit->hci_stats,
 288                         sizeof(struct bt_stats));
 289                 memset(&unit->hci_stats, 0, sizeof(struct bt_stats));
 290                 crit_exit();
 291
 292                 break;
 293
 294         case SIOCSBTSCOMTU:     /* set sco_mtu value for unit */
 295                 /*
 296                  * This is a temporary ioctl and may not be supported
 297                  * in the future. The need is that if SCO packets are
 298                  * sent to USB bluetooth controllers that are not an
 299                  * integer number of frame sizes, the USB bus locks up.
 300                  */
 301                 err = suser(td);
 302                 if (err)
 303                         break;
 304
 305                 unit->hci_max_sco_size = btr->btr_sco_mtu;
 306                 break;
 307
 308         default:
 309                 err = EFAULT;
 310                 break;
 311         }
 312
 313         return err;
 314 }