YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
| 4 | |
| 5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation; |
| 10 | |
| 11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | SOFTWARE IS DISCLAIMED. |
| 23 | */ |
| 24 | |
| 25 | /* Bluetooth HCI sockets. */ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include <linux/types.h> |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 30 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/errno.h> |
| 32 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/slab.h> |
| 34 | #include <linux/poll.h> |
| 35 | #include <linux/fcntl.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/skbuff.h> |
| 38 | #include <linux/workqueue.h> |
| 39 | #include <linux/interrupt.h> |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 40 | #include <linux/compat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/socket.h> |
| 42 | #include <linux/ioctl.h> |
| 43 | #include <net/sock.h> |
| 44 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 45 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/unaligned.h> |
| 47 | |
| 48 | #include <net/bluetooth/bluetooth.h> |
| 49 | #include <net/bluetooth/hci_core.h> |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 50 | #include <net/bluetooth/hci_mon.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 52 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | /* ----- HCI socket interface ----- */ |
| 55 | |
| 56 | static inline int hci_test_bit(int nr, void *addr) |
| 57 | { |
| 58 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
| 59 | } |
| 60 | |
| 61 | /* Security filter */ |
| 62 | static struct hci_sec_filter hci_sec_filter = { |
| 63 | /* Packet types */ |
| 64 | 0x10, |
| 65 | /* Events */ |
Marcel Holtmann | dd7f552 | 2005-10-28 19:20:53 +0200 | [diff] [blame] | 66 | { 0x1000d9fe, 0x0000b00c }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | /* Commands */ |
| 68 | { |
| 69 | { 0x0 }, |
| 70 | /* OGF_LINK_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 71 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | /* OGF_LINK_POLICY */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 73 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | /* OGF_HOST_CTL */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 75 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | /* OGF_INFO_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 77 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | /* OGF_STATUS_PARAM */ |
Marcel Holtmann | 7c631a6 | 2007-09-09 08:39:43 +0200 | [diff] [blame] | 79 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | } |
| 81 | }; |
| 82 | |
| 83 | static struct bt_sock_list hci_sk_list = { |
Robert P. J. Day | d5fb296 | 2008-03-28 16:17:38 -0700 | [diff] [blame] | 84 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | }; |
| 86 | |
| 87 | /* Send frame to RAW socket */ |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 88 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | { |
| 90 | struct sock *sk; |
| 91 | struct hlist_node *node; |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 92 | struct sk_buff *skb_copy = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 95 | |
| 96 | read_lock(&hci_sk_list.lock); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | sk_for_each(sk, node, &hci_sk_list.head) { |
| 99 | struct hci_filter *flt; |
| 100 | struct sk_buff *nskb; |
| 101 | |
| 102 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) |
| 103 | continue; |
| 104 | |
| 105 | /* Don't send frame to the socket it came from */ |
| 106 | if (skb->sk == sk) |
| 107 | continue; |
| 108 | |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 109 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) |
Johan Hedberg | a40c406 | 2010-12-08 00:21:07 +0200 | [diff] [blame] | 110 | continue; |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | /* Apply filter */ |
| 113 | flt = &hci_pi(sk)->filter; |
| 114 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 115 | if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 116 | 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), |
| 117 | &flt->type_mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | continue; |
| 119 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 120 | if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 121 | int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | if (!hci_test_bit(evt, &flt->event_mask)) |
| 124 | continue; |
| 125 | |
David S. Miller | 4498c80 | 2006-11-21 16:17:41 -0800 | [diff] [blame] | 126 | if (flt->opcode && |
| 127 | ((evt == HCI_EV_CMD_COMPLETE && |
| 128 | flt->opcode != |
Al Viro | 905f3ed | 2006-12-13 00:35:01 -0800 | [diff] [blame] | 129 | get_unaligned((__le16 *)(skb->data + 3))) || |
David S. Miller | 4498c80 | 2006-11-21 16:17:41 -0800 | [diff] [blame] | 130 | (evt == HCI_EV_CMD_STATUS && |
| 131 | flt->opcode != |
Al Viro | 905f3ed | 2006-12-13 00:35:01 -0800 | [diff] [blame] | 132 | get_unaligned((__le16 *)(skb->data + 4))))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | continue; |
| 134 | } |
| 135 | |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 136 | if (!skb_copy) { |
| 137 | /* Create a private copy with headroom */ |
| 138 | skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC); |
| 139 | if (!skb_copy) |
| 140 | continue; |
| 141 | |
| 142 | /* Put type byte before the data */ |
| 143 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); |
| 144 | } |
| 145 | |
| 146 | nskb = skb_clone(skb_copy, GFP_ATOMIC); |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 147 | if (!nskb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | continue; |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | if (sock_queue_rcv_skb(sk, nskb)) |
| 151 | kfree_skb(nskb); |
| 152 | } |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 153 | |
| 154 | read_unlock(&hci_sk_list.lock); |
Marcel Holtmann | e0edf37 | 2012-02-20 14:50:36 +0100 | [diff] [blame] | 155 | |
| 156 | kfree_skb(skb_copy); |
Marcel Holtmann | 470fe1b | 2012-02-20 14:50:30 +0100 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | /* Send frame to control socket */ |
| 160 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) |
| 161 | { |
| 162 | struct sock *sk; |
| 163 | struct hlist_node *node; |
| 164 | |
| 165 | BT_DBG("len %d", skb->len); |
| 166 | |
| 167 | read_lock(&hci_sk_list.lock); |
| 168 | |
| 169 | sk_for_each(sk, node, &hci_sk_list.head) { |
| 170 | struct sk_buff *nskb; |
| 171 | |
| 172 | /* Skip the original socket */ |
| 173 | if (sk == skip_sk) |
| 174 | continue; |
| 175 | |
| 176 | if (sk->sk_state != BT_BOUND) |
| 177 | continue; |
| 178 | |
| 179 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) |
| 180 | continue; |
| 181 | |
| 182 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 183 | if (!nskb) |
| 184 | continue; |
| 185 | |
| 186 | if (sock_queue_rcv_skb(sk, nskb)) |
| 187 | kfree_skb(nskb); |
| 188 | } |
| 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | read_unlock(&hci_sk_list.lock); |
| 191 | } |
| 192 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 193 | /* Send frame to monitor socket */ |
| 194 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) |
| 195 | { |
| 196 | struct sock *sk; |
| 197 | struct hlist_node *node; |
| 198 | struct sk_buff *skb_copy = NULL; |
| 199 | __le16 opcode; |
| 200 | |
| 201 | if (!atomic_read(&monitor_promisc)) |
| 202 | return; |
| 203 | |
| 204 | BT_DBG("hdev %p len %d", hdev, skb->len); |
| 205 | |
| 206 | switch (bt_cb(skb)->pkt_type) { |
| 207 | case HCI_COMMAND_PKT: |
| 208 | opcode = __constant_cpu_to_le16(HCI_MON_COMMAND_PKT); |
| 209 | break; |
| 210 | case HCI_EVENT_PKT: |
| 211 | opcode = __constant_cpu_to_le16(HCI_MON_EVENT_PKT); |
| 212 | break; |
| 213 | case HCI_ACLDATA_PKT: |
| 214 | if (bt_cb(skb)->incoming) |
| 215 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_RX_PKT); |
| 216 | else |
| 217 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_TX_PKT); |
| 218 | break; |
| 219 | case HCI_SCODATA_PKT: |
| 220 | if (bt_cb(skb)->incoming) |
| 221 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_RX_PKT); |
| 222 | else |
| 223 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_TX_PKT); |
| 224 | break; |
| 225 | default: |
| 226 | return; |
| 227 | } |
| 228 | |
| 229 | read_lock(&hci_sk_list.lock); |
| 230 | |
| 231 | sk_for_each(sk, node, &hci_sk_list.head) { |
| 232 | struct sk_buff *nskb; |
| 233 | |
| 234 | if (sk->sk_state != BT_BOUND) |
| 235 | continue; |
| 236 | |
| 237 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) |
| 238 | continue; |
| 239 | |
| 240 | if (!skb_copy) { |
| 241 | struct hci_mon_hdr *hdr; |
| 242 | |
| 243 | /* Create a private copy with headroom */ |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 244 | skb_copy = __pskb_copy(skb, HCI_MON_HDR_SIZE, |
| 245 | GFP_ATOMIC); |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 246 | if (!skb_copy) |
| 247 | continue; |
| 248 | |
| 249 | /* Put header before the data */ |
| 250 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); |
| 251 | hdr->opcode = opcode; |
| 252 | hdr->index = cpu_to_le16(hdev->id); |
| 253 | hdr->len = cpu_to_le16(skb->len); |
| 254 | } |
| 255 | |
| 256 | nskb = skb_clone(skb_copy, GFP_ATOMIC); |
| 257 | if (!nskb) |
| 258 | continue; |
| 259 | |
| 260 | if (sock_queue_rcv_skb(sk, nskb)) |
| 261 | kfree_skb(nskb); |
| 262 | } |
| 263 | |
| 264 | read_unlock(&hci_sk_list.lock); |
| 265 | |
| 266 | kfree_skb(skb_copy); |
| 267 | } |
| 268 | |
| 269 | static void send_monitor_event(struct sk_buff *skb) |
| 270 | { |
| 271 | struct sock *sk; |
| 272 | struct hlist_node *node; |
| 273 | |
| 274 | BT_DBG("len %d", skb->len); |
| 275 | |
| 276 | read_lock(&hci_sk_list.lock); |
| 277 | |
| 278 | sk_for_each(sk, node, &hci_sk_list.head) { |
| 279 | struct sk_buff *nskb; |
| 280 | |
| 281 | if (sk->sk_state != BT_BOUND) |
| 282 | continue; |
| 283 | |
| 284 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) |
| 285 | continue; |
| 286 | |
| 287 | nskb = skb_clone(skb, GFP_ATOMIC); |
| 288 | if (!nskb) |
| 289 | continue; |
| 290 | |
| 291 | if (sock_queue_rcv_skb(sk, nskb)) |
| 292 | kfree_skb(nskb); |
| 293 | } |
| 294 | |
| 295 | read_unlock(&hci_sk_list.lock); |
| 296 | } |
| 297 | |
| 298 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
| 299 | { |
| 300 | struct hci_mon_hdr *hdr; |
| 301 | struct hci_mon_new_index *ni; |
| 302 | struct sk_buff *skb; |
| 303 | __le16 opcode; |
| 304 | |
| 305 | switch (event) { |
| 306 | case HCI_DEV_REG: |
| 307 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); |
| 308 | if (!skb) |
| 309 | return NULL; |
| 310 | |
| 311 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
| 312 | ni->type = hdev->dev_type; |
| 313 | ni->bus = hdev->bus; |
| 314 | bacpy(&ni->bdaddr, &hdev->bdaddr); |
| 315 | memcpy(ni->name, hdev->name, 8); |
| 316 | |
| 317 | opcode = __constant_cpu_to_le16(HCI_MON_NEW_INDEX); |
| 318 | break; |
| 319 | |
| 320 | case HCI_DEV_UNREG: |
| 321 | skb = bt_skb_alloc(0, GFP_ATOMIC); |
| 322 | if (!skb) |
| 323 | return NULL; |
| 324 | |
| 325 | opcode = __constant_cpu_to_le16(HCI_MON_DEL_INDEX); |
| 326 | break; |
| 327 | |
| 328 | default: |
| 329 | return NULL; |
| 330 | } |
| 331 | |
| 332 | __net_timestamp(skb); |
| 333 | |
| 334 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); |
| 335 | hdr->opcode = opcode; |
| 336 | hdr->index = cpu_to_le16(hdev->id); |
| 337 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
| 338 | |
| 339 | return skb; |
| 340 | } |
| 341 | |
| 342 | static void send_monitor_replay(struct sock *sk) |
| 343 | { |
| 344 | struct hci_dev *hdev; |
| 345 | |
| 346 | read_lock(&hci_dev_list_lock); |
| 347 | |
| 348 | list_for_each_entry(hdev, &hci_dev_list, list) { |
| 349 | struct sk_buff *skb; |
| 350 | |
| 351 | skb = create_monitor_event(hdev, HCI_DEV_REG); |
| 352 | if (!skb) |
| 353 | continue; |
| 354 | |
| 355 | if (sock_queue_rcv_skb(sk, skb)) |
| 356 | kfree_skb(skb); |
| 357 | } |
| 358 | |
| 359 | read_unlock(&hci_dev_list_lock); |
| 360 | } |
| 361 | |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 362 | /* Generate internal stack event */ |
| 363 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) |
| 364 | { |
| 365 | struct hci_event_hdr *hdr; |
| 366 | struct hci_ev_stack_internal *ev; |
| 367 | struct sk_buff *skb; |
| 368 | |
| 369 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); |
| 370 | if (!skb) |
| 371 | return; |
| 372 | |
| 373 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); |
| 374 | hdr->evt = HCI_EV_STACK_INTERNAL; |
| 375 | hdr->plen = sizeof(*ev) + dlen; |
| 376 | |
| 377 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); |
| 378 | ev->type = type; |
| 379 | memcpy(ev->data, data, dlen); |
| 380 | |
| 381 | bt_cb(skb)->incoming = 1; |
| 382 | __net_timestamp(skb); |
| 383 | |
| 384 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; |
| 385 | skb->dev = (void *) hdev; |
| 386 | hci_send_to_sock(hdev, skb); |
| 387 | kfree_skb(skb); |
| 388 | } |
| 389 | |
| 390 | void hci_sock_dev_event(struct hci_dev *hdev, int event) |
| 391 | { |
| 392 | struct hci_ev_si_device ev; |
| 393 | |
| 394 | BT_DBG("hdev %s event %d", hdev->name, event); |
| 395 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 396 | /* Send event to monitor */ |
| 397 | if (atomic_read(&monitor_promisc)) { |
| 398 | struct sk_buff *skb; |
| 399 | |
| 400 | skb = create_monitor_event(hdev, event); |
| 401 | if (skb) { |
| 402 | send_monitor_event(skb); |
| 403 | kfree_skb(skb); |
| 404 | } |
| 405 | } |
| 406 | |
Marcel Holtmann | 040030e | 2012-02-20 14:50:37 +0100 | [diff] [blame] | 407 | /* Send event to sockets */ |
| 408 | ev.event = event; |
| 409 | ev.dev_id = hdev->id; |
| 410 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); |
| 411 | |
| 412 | if (event == HCI_DEV_UNREG) { |
| 413 | struct sock *sk; |
| 414 | struct hlist_node *node; |
| 415 | |
| 416 | /* Detach sockets from device */ |
| 417 | read_lock(&hci_sk_list.lock); |
| 418 | sk_for_each(sk, node, &hci_sk_list.head) { |
| 419 | bh_lock_sock_nested(sk); |
| 420 | if (hci_pi(sk)->hdev == hdev) { |
| 421 | hci_pi(sk)->hdev = NULL; |
| 422 | sk->sk_err = EPIPE; |
| 423 | sk->sk_state = BT_OPEN; |
| 424 | sk->sk_state_change(sk); |
| 425 | |
| 426 | hci_dev_put(hdev); |
| 427 | } |
| 428 | bh_unlock_sock(sk); |
| 429 | } |
| 430 | read_unlock(&hci_sk_list.lock); |
| 431 | } |
| 432 | } |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | static int hci_sock_release(struct socket *sock) |
| 435 | { |
| 436 | struct sock *sk = sock->sk; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 437 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | BT_DBG("sock %p sk %p", sock, sk); |
| 440 | |
| 441 | if (!sk) |
| 442 | return 0; |
| 443 | |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 444 | hdev = hci_pi(sk)->hdev; |
| 445 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 446 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
| 447 | atomic_dec(&monitor_promisc); |
| 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | bt_sock_unlink(&hci_sk_list, sk); |
| 450 | |
| 451 | if (hdev) { |
| 452 | atomic_dec(&hdev->promisc); |
| 453 | hci_dev_put(hdev); |
| 454 | } |
| 455 | |
| 456 | sock_orphan(sk); |
| 457 | |
| 458 | skb_queue_purge(&sk->sk_receive_queue); |
| 459 | skb_queue_purge(&sk->sk_write_queue); |
| 460 | |
| 461 | sock_put(sk); |
| 462 | return 0; |
| 463 | } |
| 464 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 465 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 466 | { |
| 467 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 468 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 469 | |
| 470 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 471 | return -EFAULT; |
| 472 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 473 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 474 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 475 | err = hci_blacklist_add(hdev, &bdaddr, 0); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 476 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 477 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 478 | |
| 479 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 480 | } |
| 481 | |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 482 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 483 | { |
| 484 | bdaddr_t bdaddr; |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 485 | int err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 486 | |
| 487 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) |
| 488 | return -EFAULT; |
| 489 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 490 | hci_dev_lock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 491 | |
Johan Hedberg | 88c1fe4 | 2012-02-09 15:56:11 +0200 | [diff] [blame] | 492 | err = hci_blacklist_del(hdev, &bdaddr, 0); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 493 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 494 | hci_dev_unlock(hdev); |
Antti Julku | 5e76244 | 2011-08-25 16:48:02 +0300 | [diff] [blame] | 495 | |
| 496 | return err; |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 497 | } |
| 498 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 499 | /* Ioctls that require bound socket */ |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 500 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
| 501 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
| 504 | |
| 505 | if (!hdev) |
| 506 | return -EBADFD; |
| 507 | |
| 508 | switch (cmd) { |
| 509 | case HCISETRAW: |
| 510 | if (!capable(CAP_NET_ADMIN)) |
| 511 | return -EACCES; |
| 512 | |
| 513 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
| 514 | return -EPERM; |
| 515 | |
| 516 | if (arg) |
| 517 | set_bit(HCI_RAW, &hdev->flags); |
| 518 | else |
| 519 | clear_bit(HCI_RAW, &hdev->flags); |
| 520 | |
| 521 | return 0; |
| 522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | case HCIGETCONNINFO: |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 524 | return hci_get_conn_info(hdev, (void __user *) arg); |
| 525 | |
| 526 | case HCIGETAUTHINFO: |
| 527 | return hci_get_auth_info(hdev, (void __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 529 | case HCIBLOCKADDR: |
| 530 | if (!capable(CAP_NET_ADMIN)) |
| 531 | return -EACCES; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 532 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 533 | |
| 534 | case HCIUNBLOCKADDR: |
| 535 | if (!capable(CAP_NET_ADMIN)) |
| 536 | return -EACCES; |
Antti Julku | b2a66aa | 2011-06-15 12:01:14 +0300 | [diff] [blame] | 537 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
Johan Hedberg | f035856 | 2010-05-18 13:20:32 +0200 | [diff] [blame] | 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | default: |
| 540 | if (hdev->ioctl) |
| 541 | return hdev->ioctl(hdev, cmd, arg); |
| 542 | return -EINVAL; |
| 543 | } |
| 544 | } |
| 545 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 546 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
| 547 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | { |
| 549 | struct sock *sk = sock->sk; |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 550 | void __user *argp = (void __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | int err; |
| 552 | |
| 553 | BT_DBG("cmd %x arg %lx", cmd, arg); |
| 554 | |
| 555 | switch (cmd) { |
| 556 | case HCIGETDEVLIST: |
| 557 | return hci_get_dev_list(argp); |
| 558 | |
| 559 | case HCIGETDEVINFO: |
| 560 | return hci_get_dev_info(argp); |
| 561 | |
| 562 | case HCIGETCONNLIST: |
| 563 | return hci_get_conn_list(argp); |
| 564 | |
| 565 | case HCIDEVUP: |
| 566 | if (!capable(CAP_NET_ADMIN)) |
| 567 | return -EACCES; |
| 568 | return hci_dev_open(arg); |
| 569 | |
| 570 | case HCIDEVDOWN: |
| 571 | if (!capable(CAP_NET_ADMIN)) |
| 572 | return -EACCES; |
| 573 | return hci_dev_close(arg); |
| 574 | |
| 575 | case HCIDEVRESET: |
| 576 | if (!capable(CAP_NET_ADMIN)) |
| 577 | return -EACCES; |
| 578 | return hci_dev_reset(arg); |
| 579 | |
| 580 | case HCIDEVRESTAT: |
| 581 | if (!capable(CAP_NET_ADMIN)) |
| 582 | return -EACCES; |
| 583 | return hci_dev_reset_stat(arg); |
| 584 | |
| 585 | case HCISETSCAN: |
| 586 | case HCISETAUTH: |
| 587 | case HCISETENCRYPT: |
| 588 | case HCISETPTYPE: |
| 589 | case HCISETLINKPOL: |
| 590 | case HCISETLINKMODE: |
| 591 | case HCISETACLMTU: |
| 592 | case HCISETSCOMTU: |
| 593 | if (!capable(CAP_NET_ADMIN)) |
| 594 | return -EACCES; |
| 595 | return hci_dev_cmd(cmd, argp); |
| 596 | |
| 597 | case HCIINQUIRY: |
| 598 | return hci_inquiry(argp); |
| 599 | |
| 600 | default: |
| 601 | lock_sock(sk); |
| 602 | err = hci_sock_bound_ioctl(sk, cmd, arg); |
| 603 | release_sock(sk); |
| 604 | return err; |
| 605 | } |
| 606 | } |
| 607 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 608 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
| 609 | int addr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 611 | struct sockaddr_hci haddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | struct sock *sk = sock->sk; |
| 613 | struct hci_dev *hdev = NULL; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 614 | int len, err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | BT_DBG("sock %p sk %p", sock, sk); |
| 617 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 618 | if (!addr) |
| 619 | return -EINVAL; |
| 620 | |
| 621 | memset(&haddr, 0, sizeof(haddr)); |
| 622 | len = min_t(unsigned int, sizeof(haddr), addr_len); |
| 623 | memcpy(&haddr, addr, len); |
| 624 | |
| 625 | if (haddr.hci_family != AF_BLUETOOTH) |
| 626 | return -EINVAL; |
| 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | lock_sock(sk); |
| 629 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 630 | if (sk->sk_state == BT_BOUND) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | err = -EALREADY; |
| 632 | goto done; |
| 633 | } |
| 634 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 635 | switch (haddr.hci_channel) { |
| 636 | case HCI_CHANNEL_RAW: |
| 637 | if (hci_pi(sk)->hdev) { |
| 638 | err = -EALREADY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | goto done; |
| 640 | } |
| 641 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 642 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 643 | hdev = hci_dev_get(haddr.hci_dev); |
| 644 | if (!hdev) { |
| 645 | err = -ENODEV; |
| 646 | goto done; |
| 647 | } |
| 648 | |
| 649 | atomic_inc(&hdev->promisc); |
| 650 | } |
| 651 | |
| 652 | hci_pi(sk)->hdev = hdev; |
| 653 | break; |
| 654 | |
| 655 | case HCI_CHANNEL_CONTROL: |
Marcel Holtmann | 4b95a24 | 2012-02-20 21:24:37 +0100 | [diff] [blame] | 656 | if (haddr.hci_dev != HCI_DEV_NONE) { |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 657 | err = -EINVAL; |
| 658 | goto done; |
| 659 | } |
| 660 | |
Marcel Holtmann | 801f13b | 2012-02-20 20:54:10 +0100 | [diff] [blame] | 661 | if (!capable(CAP_NET_ADMIN)) { |
| 662 | err = -EPERM; |
| 663 | goto done; |
| 664 | } |
| 665 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 666 | break; |
| 667 | |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 668 | case HCI_CHANNEL_MONITOR: |
| 669 | if (haddr.hci_dev != HCI_DEV_NONE) { |
| 670 | err = -EINVAL; |
| 671 | goto done; |
| 672 | } |
| 673 | |
| 674 | if (!capable(CAP_NET_RAW)) { |
| 675 | err = -EPERM; |
| 676 | goto done; |
| 677 | } |
| 678 | |
| 679 | send_monitor_replay(sk); |
| 680 | |
| 681 | atomic_inc(&monitor_promisc); |
| 682 | break; |
| 683 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 684 | default: |
| 685 | err = -EINVAL; |
| 686 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | } |
| 688 | |
Marcel Holtmann | 7cc2ade | 2012-02-20 14:50:35 +0100 | [diff] [blame] | 689 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 690 | hci_pi(sk)->channel = haddr.hci_channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | sk->sk_state = BT_BOUND; |
| 692 | |
| 693 | done: |
| 694 | release_sock(sk); |
| 695 | return err; |
| 696 | } |
| 697 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 698 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 699 | int *addr_len, int peer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | { |
| 701 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; |
| 702 | struct sock *sk = sock->sk; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 703 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
| 705 | BT_DBG("sock %p sk %p", sock, sk); |
| 706 | |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 707 | if (!hdev) |
| 708 | return -EBADFD; |
| 709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | lock_sock(sk); |
| 711 | |
| 712 | *addr_len = sizeof(*haddr); |
| 713 | haddr->hci_family = AF_BLUETOOTH; |
Marcel Holtmann | 7b005bd | 2006-02-13 11:40:03 +0100 | [diff] [blame] | 714 | haddr->hci_dev = hdev->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | |
| 716 | release_sock(sk); |
| 717 | return 0; |
| 718 | } |
| 719 | |
Gustavo Padovan | 6039aa73 | 2012-05-23 04:04:18 -0300 | [diff] [blame] | 720 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
| 721 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | { |
| 723 | __u32 mask = hci_pi(sk)->cmsg_mask; |
| 724 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 725 | if (mask & HCI_CMSG_DIR) { |
| 726 | int incoming = bt_cb(skb)->incoming; |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 727 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
| 728 | &incoming); |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 729 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 731 | if (mask & HCI_CMSG_TSTAMP) { |
Johann Felix Soden | f6e623a | 2010-02-15 22:23:48 +0100 | [diff] [blame] | 732 | #ifdef CONFIG_COMPAT |
| 733 | struct compat_timeval ctv; |
| 734 | #endif |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 735 | struct timeval tv; |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 736 | void *data; |
| 737 | int len; |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 738 | |
| 739 | skb_get_timestamp(skb, &tv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 740 | |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 741 | data = &tv; |
| 742 | len = sizeof(tv); |
| 743 | #ifdef CONFIG_COMPAT |
H. J. Lu | da88cea | 2012-02-10 14:12:15 -0800 | [diff] [blame] | 744 | if (!COMPAT_USE_64BIT_TIME && |
| 745 | (msg->msg_flags & MSG_CMSG_COMPAT)) { |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 746 | ctv.tv_sec = tv.tv_sec; |
| 747 | ctv.tv_usec = tv.tv_usec; |
| 748 | data = &ctv; |
| 749 | len = sizeof(ctv); |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 750 | } |
David S. Miller | 1da97f8 | 2007-09-12 14:10:58 +0200 | [diff] [blame] | 751 | #endif |
Marcel Holtmann | 767c5eb | 2007-09-09 08:39:34 +0200 | [diff] [blame] | 752 | |
| 753 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); |
Patrick McHardy | a61bbcf | 2005-08-14 17:24:31 -0700 | [diff] [blame] | 754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 756 | |
| 757 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 758 | struct msghdr *msg, size_t len, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | { |
| 760 | int noblock = flags & MSG_DONTWAIT; |
| 761 | struct sock *sk = sock->sk; |
| 762 | struct sk_buff *skb; |
| 763 | int copied, err; |
| 764 | |
| 765 | BT_DBG("sock %p, sk %p", sock, sk); |
| 766 | |
| 767 | if (flags & (MSG_OOB)) |
| 768 | return -EOPNOTSUPP; |
| 769 | |
| 770 | if (sk->sk_state == BT_CLOSED) |
| 771 | return 0; |
| 772 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 773 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
| 774 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | return err; |
| 776 | |
| 777 | msg->msg_namelen = 0; |
| 778 | |
| 779 | copied = skb->len; |
| 780 | if (len < copied) { |
| 781 | msg->msg_flags |= MSG_TRUNC; |
| 782 | copied = len; |
| 783 | } |
| 784 | |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 785 | skb_reset_transport_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
| 787 | |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 788 | switch (hci_pi(sk)->channel) { |
| 789 | case HCI_CHANNEL_RAW: |
| 790 | hci_sock_cmsg(sk, msg, skb); |
| 791 | break; |
Marcel Holtmann | 97e0bde | 2012-02-22 13:49:28 +0100 | [diff] [blame] | 792 | case HCI_CHANNEL_CONTROL: |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 793 | case HCI_CHANNEL_MONITOR: |
| 794 | sock_recv_timestamp(msg, sk, skb); |
| 795 | break; |
Marcel Holtmann | 3a20862 | 2012-02-20 14:50:34 +0100 | [diff] [blame] | 796 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
| 798 | skb_free_datagram(sk, skb); |
| 799 | |
| 800 | return err ? : copied; |
| 801 | } |
| 802 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 803 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | struct msghdr *msg, size_t len) |
| 805 | { |
| 806 | struct sock *sk = sock->sk; |
| 807 | struct hci_dev *hdev; |
| 808 | struct sk_buff *skb; |
| 809 | int err; |
| 810 | |
| 811 | BT_DBG("sock %p sk %p", sock, sk); |
| 812 | |
| 813 | if (msg->msg_flags & MSG_OOB) |
| 814 | return -EOPNOTSUPP; |
| 815 | |
| 816 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) |
| 817 | return -EINVAL; |
| 818 | |
| 819 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) |
| 820 | return -EINVAL; |
| 821 | |
| 822 | lock_sock(sk); |
| 823 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 824 | switch (hci_pi(sk)->channel) { |
| 825 | case HCI_CHANNEL_RAW: |
| 826 | break; |
| 827 | case HCI_CHANNEL_CONTROL: |
| 828 | err = mgmt_control(sk, msg, len); |
| 829 | goto done; |
Marcel Holtmann | cd82e61 | 2012-02-20 20:34:38 +0100 | [diff] [blame] | 830 | case HCI_CHANNEL_MONITOR: |
| 831 | err = -EOPNOTSUPP; |
| 832 | goto done; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 833 | default: |
| 834 | err = -EINVAL; |
| 835 | goto done; |
| 836 | } |
| 837 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 838 | hdev = hci_pi(sk)->hdev; |
| 839 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | err = -EBADFD; |
| 841 | goto done; |
| 842 | } |
| 843 | |
Marcel Holtmann | 7e21add | 2009-11-18 01:05:00 +0100 | [diff] [blame] | 844 | if (!test_bit(HCI_UP, &hdev->flags)) { |
| 845 | err = -ENETDOWN; |
| 846 | goto done; |
| 847 | } |
| 848 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 849 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
| 850 | if (!skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | goto done; |
| 852 | |
| 853 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { |
| 854 | err = -EFAULT; |
| 855 | goto drop; |
| 856 | } |
| 857 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 858 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | skb_pull(skb, 1); |
| 860 | skb->dev = (void *) hdev; |
| 861 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 862 | if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
Harvey Harrison | 8398531 | 2008-05-02 16:25:46 -0700 | [diff] [blame] | 863 | u16 opcode = get_unaligned_le16(skb->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | u16 ogf = hci_opcode_ogf(opcode); |
| 865 | u16 ocf = hci_opcode_ocf(opcode); |
| 866 | |
| 867 | if (((ogf > HCI_SFLT_MAX_OGF) || |
Gustavo Padovan | 3bb3c75 | 2012-05-17 00:36:22 -0300 | [diff] [blame] | 868 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
| 869 | &hci_sec_filter.ocf_mask[ogf])) && |
| 870 | !capable(CAP_NET_RAW)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | err = -EPERM; |
| 872 | goto drop; |
| 873 | } |
| 874 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 875 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 877 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | } else { |
| 879 | skb_queue_tail(&hdev->cmd_q, skb); |
Gustavo F. Padovan | c347b76 | 2011-12-14 23:53:47 -0200 | [diff] [blame] | 880 | queue_work(hdev->workqueue, &hdev->cmd_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | } |
| 882 | } else { |
| 883 | if (!capable(CAP_NET_RAW)) { |
| 884 | err = -EPERM; |
| 885 | goto drop; |
| 886 | } |
| 887 | |
| 888 | skb_queue_tail(&hdev->raw_q, skb); |
Gustavo F. Padovan | 3eff45e | 2011-12-15 00:50:02 -0200 | [diff] [blame] | 889 | queue_work(hdev->workqueue, &hdev->tx_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | err = len; |
| 893 | |
| 894 | done: |
| 895 | release_sock(sk); |
| 896 | return err; |
| 897 | |
| 898 | drop: |
| 899 | kfree_skb(skb); |
| 900 | goto done; |
| 901 | } |
| 902 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 903 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
| 904 | char __user *optval, unsigned int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | { |
| 906 | struct hci_ufilter uf = { .opcode = 0 }; |
| 907 | struct sock *sk = sock->sk; |
| 908 | int err = 0, opt = 0; |
| 909 | |
| 910 | BT_DBG("sk %p, opt %d", sk, optname); |
| 911 | |
| 912 | lock_sock(sk); |
| 913 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 914 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
| 915 | err = -EINVAL; |
| 916 | goto done; |
| 917 | } |
| 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | switch (optname) { |
| 920 | case HCI_DATA_DIR: |
| 921 | if (get_user(opt, (int __user *)optval)) { |
| 922 | err = -EFAULT; |
| 923 | break; |
| 924 | } |
| 925 | |
| 926 | if (opt) |
| 927 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; |
| 928 | else |
| 929 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; |
| 930 | break; |
| 931 | |
| 932 | case HCI_TIME_STAMP: |
| 933 | if (get_user(opt, (int __user *)optval)) { |
| 934 | err = -EFAULT; |
| 935 | break; |
| 936 | } |
| 937 | |
| 938 | if (opt) |
| 939 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; |
| 940 | else |
| 941 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; |
| 942 | break; |
| 943 | |
| 944 | case HCI_FILTER: |
Marcel Holtmann | 0878b66 | 2007-05-05 00:35:59 +0200 | [diff] [blame] | 945 | { |
| 946 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 947 | |
| 948 | uf.type_mask = f->type_mask; |
| 949 | uf.opcode = f->opcode; |
| 950 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 951 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 952 | } |
| 953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | len = min_t(unsigned int, len, sizeof(uf)); |
| 955 | if (copy_from_user(&uf, optval, len)) { |
| 956 | err = -EFAULT; |
| 957 | break; |
| 958 | } |
| 959 | |
| 960 | if (!capable(CAP_NET_RAW)) { |
| 961 | uf.type_mask &= hci_sec_filter.type_mask; |
| 962 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); |
| 963 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); |
| 964 | } |
| 965 | |
| 966 | { |
| 967 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 968 | |
| 969 | f->type_mask = uf.type_mask; |
| 970 | f->opcode = uf.opcode; |
| 971 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; |
| 972 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; |
| 973 | } |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 974 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | default: |
| 977 | err = -ENOPROTOOPT; |
| 978 | break; |
| 979 | } |
| 980 | |
Marcel Holtmann | 2f39cdb | 2012-02-20 14:50:32 +0100 | [diff] [blame] | 981 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | release_sock(sk); |
| 983 | return err; |
| 984 | } |
| 985 | |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame^] | 986 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
| 987 | char __user *optval, int __user *optlen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | { |
| 989 | struct hci_ufilter uf; |
| 990 | struct sock *sk = sock->sk; |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 991 | int len, opt, err = 0; |
| 992 | |
| 993 | BT_DBG("sk %p, opt %d", sk, optname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
| 995 | if (get_user(len, optlen)) |
| 996 | return -EFAULT; |
| 997 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 998 | lock_sock(sk); |
| 999 | |
| 1000 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
| 1001 | err = -EINVAL; |
| 1002 | goto done; |
| 1003 | } |
| 1004 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | switch (optname) { |
| 1006 | case HCI_DATA_DIR: |
| 1007 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) |
| 1008 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1009 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | opt = 0; |
| 1011 | |
| 1012 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1013 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | break; |
| 1015 | |
| 1016 | case HCI_TIME_STAMP: |
| 1017 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) |
| 1018 | opt = 1; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1019 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | opt = 0; |
| 1021 | |
| 1022 | if (put_user(opt, optval)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1023 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | break; |
| 1025 | |
| 1026 | case HCI_FILTER: |
| 1027 | { |
| 1028 | struct hci_filter *f = &hci_pi(sk)->filter; |
| 1029 | |
| 1030 | uf.type_mask = f->type_mask; |
| 1031 | uf.opcode = f->opcode; |
| 1032 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); |
| 1033 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); |
| 1034 | } |
| 1035 | |
| 1036 | len = min_t(unsigned int, len, sizeof(uf)); |
| 1037 | if (copy_to_user(optval, &uf, len)) |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1038 | err = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | break; |
| 1040 | |
| 1041 | default: |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1042 | err = -ENOPROTOOPT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | break; |
| 1044 | } |
| 1045 | |
Marcel Holtmann | cedc546 | 2012-02-20 14:50:33 +0100 | [diff] [blame] | 1046 | done: |
| 1047 | release_sock(sk); |
| 1048 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
Eric Dumazet | 90ddc4f | 2005-12-22 12:49:22 -0800 | [diff] [blame] | 1051 | static const struct proto_ops hci_sock_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | .family = PF_BLUETOOTH, |
| 1053 | .owner = THIS_MODULE, |
| 1054 | .release = hci_sock_release, |
| 1055 | .bind = hci_sock_bind, |
| 1056 | .getname = hci_sock_getname, |
| 1057 | .sendmsg = hci_sock_sendmsg, |
| 1058 | .recvmsg = hci_sock_recvmsg, |
| 1059 | .ioctl = hci_sock_ioctl, |
| 1060 | .poll = datagram_poll, |
| 1061 | .listen = sock_no_listen, |
| 1062 | .shutdown = sock_no_shutdown, |
| 1063 | .setsockopt = hci_sock_setsockopt, |
| 1064 | .getsockopt = hci_sock_getsockopt, |
| 1065 | .connect = sock_no_connect, |
| 1066 | .socketpair = sock_no_socketpair, |
| 1067 | .accept = sock_no_accept, |
| 1068 | .mmap = sock_no_mmap |
| 1069 | }; |
| 1070 | |
| 1071 | static struct proto hci_sk_proto = { |
| 1072 | .name = "HCI", |
| 1073 | .owner = THIS_MODULE, |
| 1074 | .obj_size = sizeof(struct hci_pinfo) |
| 1075 | }; |
| 1076 | |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 1077 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
| 1078 | int kern) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | { |
| 1080 | struct sock *sk; |
| 1081 | |
| 1082 | BT_DBG("sock %p", sock); |
| 1083 | |
| 1084 | if (sock->type != SOCK_RAW) |
| 1085 | return -ESOCKTNOSUPPORT; |
| 1086 | |
| 1087 | sock->ops = &hci_sock_ops; |
| 1088 | |
Pavel Emelyanov | 6257ff2 | 2007-11-01 00:39:31 -0700 | [diff] [blame] | 1089 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | if (!sk) |
| 1091 | return -ENOMEM; |
| 1092 | |
| 1093 | sock_init_data(sock, sk); |
| 1094 | |
| 1095 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 1096 | |
| 1097 | sk->sk_protocol = protocol; |
| 1098 | |
| 1099 | sock->state = SS_UNCONNECTED; |
| 1100 | sk->sk_state = BT_OPEN; |
| 1101 | |
| 1102 | bt_sock_link(&hci_sk_list, sk); |
| 1103 | return 0; |
| 1104 | } |
| 1105 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 1106 | static const struct net_proto_family hci_sock_family_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | .family = PF_BLUETOOTH, |
| 1108 | .owner = THIS_MODULE, |
| 1109 | .create = hci_sock_create, |
| 1110 | }; |
| 1111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | int __init hci_sock_init(void) |
| 1113 | { |
| 1114 | int err; |
| 1115 | |
| 1116 | err = proto_register(&hci_sk_proto, 0); |
| 1117 | if (err < 0) |
| 1118 | return err; |
| 1119 | |
| 1120 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); |
| 1121 | if (err < 0) |
| 1122 | goto error; |
| 1123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | BT_INFO("HCI socket layer initialized"); |
| 1125 | |
| 1126 | return 0; |
| 1127 | |
| 1128 | error: |
| 1129 | BT_ERR("HCI socket registration failed"); |
| 1130 | proto_unregister(&hci_sk_proto); |
| 1131 | return err; |
| 1132 | } |
| 1133 | |
Anand Gadiyar | b7440a14 | 2011-02-22 12:43:09 +0530 | [diff] [blame] | 1134 | void hci_sock_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | { |
| 1136 | if (bt_sock_unregister(BTPROTO_HCI) < 0) |
| 1137 | BT_ERR("HCI socket unregistration failed"); |
| 1138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | proto_unregister(&hci_sk_proto); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } |