Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1 | /* |
| 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
| 4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
| 5 | Copyright (C) 2010 Google Inc. |
Gustavo F. Padovan | 590051d | 2011-12-18 13:39:33 -0200 | [diff] [blame] | 6 | Copyright (C) 2011 ProFUSION Embedded Systems |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 7 | |
| 8 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License version 2 as |
| 12 | published by the Free Software Foundation; |
| 13 | |
| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 17 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| 18 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 21 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 24 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| 25 | SOFTWARE IS DISCLAIMED. |
| 26 | */ |
| 27 | |
| 28 | /* Bluetooth L2CAP sockets. */ |
| 29 | |
Johan Hedberg | 9149761 | 2013-12-02 11:20:20 +0200 | [diff] [blame] | 30 | #include <linux/module.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 31 | #include <linux/export.h> |
Paul Moore | 6230c9b | 2011-10-07 09:40:59 +0000 | [diff] [blame] | 32 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 33 | #include <net/bluetooth/bluetooth.h> |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 34 | #include <net/bluetooth/hci_core.h> |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 35 | #include <net/bluetooth/l2cap.h> |
Marcel Holtmann | ac4b723 | 2013-10-10 14:54:16 -0700 | [diff] [blame] | 36 | |
| 37 | #include "smp.h" |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 38 | |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 39 | static struct bt_sock_list l2cap_sk_list = { |
| 40 | .lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock) |
| 41 | }; |
| 42 | |
Gustavo F. Padovan | cf2f90f | 2011-04-27 18:40:39 -0300 | [diff] [blame] | 43 | static const struct proto_ops l2cap_sock_ops; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 44 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 45 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
| 46 | int proto, gfp_t prio); |
Gustavo F. Padovan | cf2f90f | 2011-04-27 18:40:39 -0300 | [diff] [blame] | 47 | |
David Herrmann | b3916db | 2013-04-05 14:57:34 +0200 | [diff] [blame] | 48 | bool l2cap_is_socket(struct socket *sock) |
| 49 | { |
| 50 | return sock && sock->ops == &l2cap_sock_ops; |
| 51 | } |
| 52 | EXPORT_SYMBOL(l2cap_is_socket); |
| 53 | |
Johan Hedberg | 4946096 | 2013-10-08 13:55:46 +0200 | [diff] [blame] | 54 | static int l2cap_validate_bredr_psm(u16 psm) |
| 55 | { |
| 56 | /* PSM must be odd and lsb of upper byte must be 0 */ |
| 57 | if ((psm & 0x0101) != 0x0001) |
| 58 | return -EINVAL; |
| 59 | |
| 60 | /* Restrict usage of well-known PSMs */ |
| 61 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) |
| 62 | return -EACCES; |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static int l2cap_validate_le_psm(u16 psm) |
| 68 | { |
| 69 | /* Valid LE_PSM ranges are defined only until 0x00ff */ |
| 70 | if (psm > 0x00ff) |
| 71 | return -EINVAL; |
| 72 | |
| 73 | /* Restrict fixed, SIG assigned PSM values to CAP_NET_BIND_SERVICE */ |
| 74 | if (psm <= 0x007f && !capable(CAP_NET_BIND_SERVICE)) |
| 75 | return -EACCES; |
| 76 | |
| 77 | return 0; |
| 78 | } |
| 79 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 80 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
| 81 | { |
| 82 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 83 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 84 | struct sockaddr_l2 la; |
| 85 | int len, err = 0; |
| 86 | |
| 87 | BT_DBG("sk %p", sk); |
| 88 | |
| 89 | if (!addr || addr->sa_family != AF_BLUETOOTH) |
| 90 | return -EINVAL; |
| 91 | |
| 92 | memset(&la, 0, sizeof(la)); |
| 93 | len = min_t(unsigned int, sizeof(la), alen); |
| 94 | memcpy(&la, addr, len); |
| 95 | |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 96 | if (la.l2_cid && la.l2_psm) |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 97 | return -EINVAL; |
| 98 | |
Johan Hedberg | 80c1a2e | 2013-10-14 21:17:52 +0300 | [diff] [blame] | 99 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
| 100 | return -EINVAL; |
| 101 | |
Johan Hedberg | 21626e6 | 2014-01-24 10:35:41 +0200 | [diff] [blame] | 102 | if (la.l2_cid) { |
| 103 | /* When the socket gets created it defaults to |
| 104 | * CHAN_CONN_ORIENTED, so we need to overwrite the |
| 105 | * default here. |
| 106 | */ |
| 107 | chan->chan_type = L2CAP_CHAN_FIXED; |
| 108 | chan->omtu = L2CAP_DEFAULT_MTU; |
| 109 | } |
| 110 | |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 111 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 112 | /* We only allow ATT user space socket */ |
Johan Hedberg | 9149761 | 2013-12-02 11:20:20 +0200 | [diff] [blame] | 113 | if (la.l2_cid && |
| 114 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 115 | return -EINVAL; |
| 116 | } |
| 117 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 118 | lock_sock(sk); |
| 119 | |
| 120 | if (sk->sk_state != BT_OPEN) { |
| 121 | err = -EBADFD; |
| 122 | goto done; |
| 123 | } |
| 124 | |
| 125 | if (la.l2_psm) { |
| 126 | __u16 psm = __le16_to_cpu(la.l2_psm); |
| 127 | |
Johan Hedberg | 4946096 | 2013-10-08 13:55:46 +0200 | [diff] [blame] | 128 | if (la.l2_bdaddr_type == BDADDR_BREDR) |
| 129 | err = l2cap_validate_bredr_psm(psm); |
| 130 | else |
| 131 | err = l2cap_validate_le_psm(psm); |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 132 | |
Johan Hedberg | 4946096 | 2013-10-08 13:55:46 +0200 | [diff] [blame] | 133 | if (err) |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 134 | goto done; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 135 | } |
| 136 | |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 137 | if (la.l2_cid) |
Santosh Nayak | 6e4aff1 | 2012-03-01 22:46:36 +0530 | [diff] [blame] | 138 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 139 | else |
| 140 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 141 | |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 142 | if (err < 0) |
| 143 | goto done; |
| 144 | |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 145 | switch (chan->chan_type) { |
Marcel Holtmann | 3124b84 | 2013-10-12 07:19:32 -0700 | [diff] [blame] | 146 | case L2CAP_CHAN_CONN_LESS: |
| 147 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) |
| 148 | chan->sec_level = BT_SECURITY_SDP; |
| 149 | break; |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 150 | case L2CAP_CHAN_CONN_ORIENTED: |
| 151 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || |
| 152 | __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) |
| 153 | chan->sec_level = BT_SECURITY_SDP; |
| 154 | break; |
Johan Hedberg | cb6ca8e | 2014-01-06 18:27:02 +0200 | [diff] [blame] | 155 | case L2CAP_CHAN_RAW: |
| 156 | chan->sec_level = BT_SECURITY_SDP; |
| 157 | break; |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 158 | } |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 159 | |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 160 | bacpy(&chan->src, &la.l2_bdaddr); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 161 | chan->src_type = la.l2_bdaddr_type; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 162 | |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 163 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
Johan Hedberg | 0ce43ce | 2013-12-05 14:55:33 +0200 | [diff] [blame] | 164 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 165 | |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 166 | chan->state = BT_BOUND; |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 167 | sk->sk_state = BT_BOUND; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 168 | |
| 169 | done: |
| 170 | release_sock(sk); |
| 171 | return err; |
| 172 | } |
| 173 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 174 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
| 175 | int alen, int flags) |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 176 | { |
| 177 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 178 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 179 | struct sockaddr_l2 la; |
| 180 | int len, err = 0; |
| 181 | |
| 182 | BT_DBG("sk %p", sk); |
| 183 | |
| 184 | if (!addr || alen < sizeof(addr->sa_family) || |
| 185 | addr->sa_family != AF_BLUETOOTH) |
| 186 | return -EINVAL; |
| 187 | |
| 188 | memset(&la, 0, sizeof(la)); |
| 189 | len = min_t(unsigned int, sizeof(la), alen); |
| 190 | memcpy(&la, addr, len); |
| 191 | |
Ville Tervo | acd7d37 | 2011-02-10 22:38:49 -0300 | [diff] [blame] | 192 | if (la.l2_cid && la.l2_psm) |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 193 | return -EINVAL; |
| 194 | |
Johan Hedberg | 80c1a2e | 2013-10-14 21:17:52 +0300 | [diff] [blame] | 195 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
| 196 | return -EINVAL; |
| 197 | |
Johan Hedberg | eb62249 | 2013-10-18 11:49:25 +0300 | [diff] [blame] | 198 | /* Check that the socket wasn't bound to something that |
| 199 | * conflicts with the address given to connect(). If chan->src |
| 200 | * is BDADDR_ANY it means bind() was never used, in which case |
| 201 | * chan->src_type and la.l2_bdaddr_type do not need to match. |
| 202 | */ |
| 203 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && |
| 204 | bdaddr_type_is_le(la.l2_bdaddr_type)) { |
| 205 | /* Old user space versions will try to incorrectly bind |
| 206 | * the ATT socket using BDADDR_BREDR. We need to accept |
| 207 | * this and fix up the source address type only when |
| 208 | * both the source CID and destination CID indicate |
| 209 | * ATT. Anything else is an invalid combination. |
| 210 | */ |
| 211 | if (chan->scid != L2CAP_CID_ATT || |
| 212 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) |
| 213 | return -EINVAL; |
| 214 | |
| 215 | /* We don't have the hdev available here to make a |
| 216 | * better decision on random vs public, but since all |
| 217 | * user space versions that exhibit this issue anyway do |
| 218 | * not support random local addresses assuming public |
| 219 | * here is good enough. |
| 220 | */ |
| 221 | chan->src_type = BDADDR_LE_PUBLIC; |
| 222 | } |
Johan Hedberg | 1f20938 | 2013-10-14 21:17:53 +0300 | [diff] [blame] | 223 | |
| 224 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) |
| 225 | return -EINVAL; |
| 226 | |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 227 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 228 | /* We only allow ATT user space socket */ |
Johan Hedberg | 9149761 | 2013-12-02 11:20:20 +0200 | [diff] [blame] | 229 | if (la.l2_cid && |
| 230 | la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT)) |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 231 | return -EINVAL; |
| 232 | } |
| 233 | |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 234 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
Johan Hedberg | 0ce43ce | 2013-12-05 14:55:33 +0200 | [diff] [blame] | 235 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 236 | |
Santosh Nayak | 6e4aff1 | 2012-03-01 22:46:36 +0530 | [diff] [blame] | 237 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
Andre Guedes | 8e9f989 | 2012-04-24 21:02:55 -0300 | [diff] [blame] | 238 | &la.l2_bdaddr, la.l2_bdaddr_type); |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 239 | if (err) |
Andrei Emeltchenko | b3fb611 | 2012-02-22 17:11:57 +0200 | [diff] [blame] | 240 | return err; |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 241 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 242 | lock_sock(sk); |
| 243 | |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 244 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 245 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
Andrei Emeltchenko | b3fb611 | 2012-02-22 17:11:57 +0200 | [diff] [blame] | 246 | |
| 247 | release_sock(sk); |
| 248 | |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 249 | return err; |
| 250 | } |
| 251 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 252 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
| 253 | { |
| 254 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 255 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 256 | int err = 0; |
| 257 | |
| 258 | BT_DBG("sk %p backlog %d", sk, backlog); |
| 259 | |
| 260 | lock_sock(sk); |
| 261 | |
Marcel Holtmann | 6b3af73 | 2012-04-19 13:43:51 +0200 | [diff] [blame] | 262 | if (sk->sk_state != BT_BOUND) { |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 263 | err = -EBADFD; |
| 264 | goto done; |
| 265 | } |
| 266 | |
Marcel Holtmann | 6b3af73 | 2012-04-19 13:43:51 +0200 | [diff] [blame] | 267 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
| 268 | err = -EINVAL; |
| 269 | goto done; |
| 270 | } |
| 271 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 272 | switch (chan->mode) { |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 273 | case L2CAP_MODE_BASIC: |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 274 | case L2CAP_MODE_LE_FLOWCTL: |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 275 | break; |
| 276 | case L2CAP_MODE_ERTM: |
| 277 | case L2CAP_MODE_STREAMING: |
| 278 | if (!disable_ertm) |
| 279 | break; |
| 280 | /* fall through */ |
| 281 | default: |
| 282 | err = -ENOTSUPP; |
| 283 | goto done; |
| 284 | } |
| 285 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 286 | sk->sk_max_ack_backlog = backlog; |
| 287 | sk->sk_ack_backlog = 0; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 288 | |
| 289 | chan->state = BT_LISTEN; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 290 | sk->sk_state = BT_LISTEN; |
| 291 | |
| 292 | done: |
| 293 | release_sock(sk); |
| 294 | return err; |
| 295 | } |
| 296 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 297 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
| 298 | int flags) |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 299 | { |
| 300 | DECLARE_WAITQUEUE(wait, current); |
| 301 | struct sock *sk = sock->sk, *nsk; |
| 302 | long timeo; |
| 303 | int err = 0; |
| 304 | |
| 305 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
| 306 | |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 307 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
| 308 | |
| 309 | BT_DBG("sk %p timeo %ld", sk, timeo); |
| 310 | |
| 311 | /* Wait for an incoming connection. (wake-one). */ |
| 312 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 313 | while (1) { |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 314 | set_current_state(TASK_INTERRUPTIBLE); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 315 | |
| 316 | if (sk->sk_state != BT_LISTEN) { |
| 317 | err = -EBADFD; |
| 318 | break; |
| 319 | } |
| 320 | |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 321 | nsk = bt_accept_dequeue(sk, newsock); |
| 322 | if (nsk) |
| 323 | break; |
| 324 | |
| 325 | if (!timeo) { |
| 326 | err = -EAGAIN; |
| 327 | break; |
| 328 | } |
| 329 | |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 330 | if (signal_pending(current)) { |
| 331 | err = sock_intr_errno(timeo); |
| 332 | break; |
| 333 | } |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 334 | |
| 335 | release_sock(sk); |
| 336 | timeo = schedule_timeout(timeo); |
| 337 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 338 | } |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 339 | __set_current_state(TASK_RUNNING); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 340 | remove_wait_queue(sk_sleep(sk), &wait); |
| 341 | |
| 342 | if (err) |
| 343 | goto done; |
| 344 | |
| 345 | newsock->state = SS_CONNECTED; |
| 346 | |
| 347 | BT_DBG("new socket %p", nsk); |
| 348 | |
| 349 | done: |
| 350 | release_sock(sk); |
| 351 | return err; |
| 352 | } |
| 353 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 354 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 355 | int *len, int peer) |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 356 | { |
| 357 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; |
| 358 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 359 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 360 | |
| 361 | BT_DBG("sock %p, sk %p", sock, sk); |
| 362 | |
Johan Hedberg | b783fbc | 2014-01-28 15:16:49 -0800 | [diff] [blame] | 363 | if (peer && sk->sk_state != BT_CONNECTED) |
| 364 | return -ENOTCONN; |
| 365 | |
Mathias Krause | 792039c | 2012-08-15 11:31:51 +0000 | [diff] [blame] | 366 | memset(la, 0, sizeof(struct sockaddr_l2)); |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 367 | addr->sa_family = AF_BLUETOOTH; |
| 368 | *len = sizeof(struct sockaddr_l2); |
| 369 | |
Johan Hedberg | d7e5e76 | 2014-01-28 15:16:51 -0800 | [diff] [blame] | 370 | la->l2_psm = chan->psm; |
| 371 | |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 372 | if (peer) { |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 373 | bacpy(&la->l2_bdaddr, &chan->dst); |
Gustavo F. Padovan | fe4128e | 2011-04-13 19:50:45 -0300 | [diff] [blame] | 374 | la->l2_cid = cpu_to_le16(chan->dcid); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 375 | la->l2_bdaddr_type = chan->dst_type; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 376 | } else { |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 377 | bacpy(&la->l2_bdaddr, &chan->src); |
Gustavo F. Padovan | fe4128e | 2011-04-13 19:50:45 -0300 | [diff] [blame] | 378 | la->l2_cid = cpu_to_le16(chan->scid); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 379 | la->l2_bdaddr_type = chan->src_type; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | return 0; |
| 383 | } |
| 384 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 385 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
| 386 | char __user *optval, int __user *optlen) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 387 | { |
| 388 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 389 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 390 | struct l2cap_options opts; |
| 391 | struct l2cap_conninfo cinfo; |
| 392 | int len, err = 0; |
| 393 | u32 opt; |
| 394 | |
| 395 | BT_DBG("sk %p", sk); |
| 396 | |
| 397 | if (get_user(len, optlen)) |
| 398 | return -EFAULT; |
| 399 | |
| 400 | lock_sock(sk); |
| 401 | |
| 402 | switch (optname) { |
| 403 | case L2CAP_OPTIONS: |
Johan Hedberg | 64b4f8d | 2013-12-02 16:02:03 +0200 | [diff] [blame] | 404 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
| 405 | * legacy ATT code depends on getsockopt for |
| 406 | * L2CAP_OPTIONS we need to let this pass. |
| 407 | */ |
| 408 | if (bdaddr_type_is_le(chan->src_type) && |
| 409 | chan->scid != L2CAP_CID_ATT) { |
| 410 | err = -EINVAL; |
| 411 | break; |
| 412 | } |
| 413 | |
Vasiliy Kulikov | e3fb592 | 2011-02-10 20:59:42 +0300 | [diff] [blame] | 414 | memset(&opts, 0, sizeof(opts)); |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 415 | opts.imtu = chan->imtu; |
| 416 | opts.omtu = chan->omtu; |
| 417 | opts.flush_to = chan->flush_to; |
| 418 | opts.mode = chan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 419 | opts.fcs = chan->fcs; |
| 420 | opts.max_tx = chan->max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 421 | opts.txwin_size = chan->tx_win; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 422 | |
| 423 | len = min_t(unsigned int, len, sizeof(opts)); |
| 424 | if (copy_to_user(optval, (char *) &opts, len)) |
| 425 | err = -EFAULT; |
| 426 | |
| 427 | break; |
| 428 | |
| 429 | case L2CAP_LM: |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 430 | switch (chan->sec_level) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 431 | case BT_SECURITY_LOW: |
| 432 | opt = L2CAP_LM_AUTH; |
| 433 | break; |
| 434 | case BT_SECURITY_MEDIUM: |
| 435 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; |
| 436 | break; |
| 437 | case BT_SECURITY_HIGH: |
| 438 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 439 | L2CAP_LM_SECURE; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 440 | break; |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 441 | case BT_SECURITY_FIPS: |
| 442 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | |
| 443 | L2CAP_LM_SECURE | L2CAP_LM_FIPS; |
| 444 | break; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 445 | default: |
| 446 | opt = 0; |
| 447 | break; |
| 448 | } |
| 449 | |
Andrei Emeltchenko | 43bd0f3 | 2011-10-11 14:04:34 +0300 | [diff] [blame] | 450 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 451 | opt |= L2CAP_LM_MASTER; |
| 452 | |
Andrei Emeltchenko | ecf61bd | 2011-10-11 14:04:32 +0300 | [diff] [blame] | 453 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 454 | opt |= L2CAP_LM_RELIABLE; |
| 455 | |
| 456 | if (put_user(opt, (u32 __user *) optval)) |
| 457 | err = -EFAULT; |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 458 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 459 | break; |
| 460 | |
| 461 | case L2CAP_CONNINFO: |
| 462 | if (sk->sk_state != BT_CONNECTED && |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 463 | !(sk->sk_state == BT_CONNECT2 && |
| 464 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 465 | err = -ENOTCONN; |
| 466 | break; |
| 467 | } |
| 468 | |
Filip Palian | 8d03e97 | 2011-05-12 19:32:46 +0200 | [diff] [blame] | 469 | memset(&cinfo, 0, sizeof(cinfo)); |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 470 | cinfo.hci_handle = chan->conn->hcon->handle; |
| 471 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 472 | |
| 473 | len = min_t(unsigned int, len, sizeof(cinfo)); |
| 474 | if (copy_to_user(optval, (char *) &cinfo, len)) |
| 475 | err = -EFAULT; |
| 476 | |
| 477 | break; |
| 478 | |
| 479 | default: |
| 480 | err = -ENOPROTOOPT; |
| 481 | break; |
| 482 | } |
| 483 | |
| 484 | release_sock(sk); |
| 485 | return err; |
| 486 | } |
| 487 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 488 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
| 489 | char __user *optval, int __user *optlen) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 490 | { |
| 491 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 492 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 493 | struct bt_security sec; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 494 | struct bt_power pwr; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 495 | int len, err = 0; |
| 496 | |
| 497 | BT_DBG("sk %p", sk); |
| 498 | |
| 499 | if (level == SOL_L2CAP) |
| 500 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); |
| 501 | |
| 502 | if (level != SOL_BLUETOOTH) |
| 503 | return -ENOPROTOOPT; |
| 504 | |
| 505 | if (get_user(len, optlen)) |
| 506 | return -EFAULT; |
| 507 | |
| 508 | lock_sock(sk); |
| 509 | |
| 510 | switch (optname) { |
| 511 | case BT_SECURITY: |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 512 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Johan Hedberg | e0c888a | 2014-01-25 17:10:07 -0500 | [diff] [blame] | 513 | chan->chan_type != L2CAP_CHAN_FIXED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 514 | chan->chan_type != L2CAP_CHAN_RAW) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 515 | err = -EINVAL; |
| 516 | break; |
| 517 | } |
| 518 | |
Vinicius Costa Gomes | 8f36011 | 2011-07-08 18:31:46 -0300 | [diff] [blame] | 519 | memset(&sec, 0, sizeof(sec)); |
Andrei Emeltchenko | 85e3436 | 2012-10-05 16:56:54 +0300 | [diff] [blame] | 520 | if (chan->conn) { |
Gustavo Padovan | c6585a4 | 2012-05-07 03:07:26 -0300 | [diff] [blame] | 521 | sec.level = chan->conn->hcon->sec_level; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 522 | |
Andrei Emeltchenko | 85e3436 | 2012-10-05 16:56:54 +0300 | [diff] [blame] | 523 | if (sk->sk_state == BT_CONNECTED) |
| 524 | sec.key_size = chan->conn->hcon->enc_key_size; |
| 525 | } else { |
| 526 | sec.level = chan->sec_level; |
| 527 | } |
Vinicius Costa Gomes | 8f36011 | 2011-07-08 18:31:46 -0300 | [diff] [blame] | 528 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 529 | len = min_t(unsigned int, len, sizeof(sec)); |
| 530 | if (copy_to_user(optval, (char *) &sec, len)) |
| 531 | err = -EFAULT; |
| 532 | |
| 533 | break; |
| 534 | |
| 535 | case BT_DEFER_SETUP: |
| 536 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
| 537 | err = -EINVAL; |
| 538 | break; |
| 539 | } |
| 540 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 541 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
| 542 | (u32 __user *) optval)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 543 | err = -EFAULT; |
| 544 | |
| 545 | break; |
| 546 | |
| 547 | case BT_FLUSHABLE: |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 548 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 549 | (u32 __user *) optval)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 550 | err = -EFAULT; |
| 551 | |
| 552 | break; |
| 553 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 554 | case BT_POWER: |
| 555 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 556 | && sk->sk_type != SOCK_RAW) { |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 557 | err = -EINVAL; |
| 558 | break; |
| 559 | } |
| 560 | |
Andrei Emeltchenko | 15770b1 | 2011-10-11 14:04:33 +0300 | [diff] [blame] | 561 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 562 | |
| 563 | len = min_t(unsigned int, len, sizeof(pwr)); |
| 564 | if (copy_to_user(optval, (char *) &pwr, len)) |
| 565 | err = -EFAULT; |
| 566 | |
| 567 | break; |
| 568 | |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 569 | case BT_CHANNEL_POLICY: |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 570 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
| 571 | err = -EFAULT; |
| 572 | break; |
| 573 | |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 574 | case BT_SNDMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 575 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 576 | err = -EINVAL; |
| 577 | break; |
| 578 | } |
| 579 | |
| 580 | if (sk->sk_state != BT_CONNECTED) { |
| 581 | err = -ENOTCONN; |
| 582 | break; |
| 583 | } |
| 584 | |
| 585 | if (put_user(chan->omtu, (u16 __user *) optval)) |
| 586 | err = -EFAULT; |
| 587 | break; |
| 588 | |
| 589 | case BT_RCVMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 590 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 591 | err = -EINVAL; |
| 592 | break; |
| 593 | } |
| 594 | |
| 595 | if (put_user(chan->imtu, (u16 __user *) optval)) |
| 596 | err = -EFAULT; |
| 597 | break; |
| 598 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 599 | default: |
| 600 | err = -ENOPROTOOPT; |
| 601 | break; |
| 602 | } |
| 603 | |
| 604 | release_sock(sk); |
| 605 | return err; |
| 606 | } |
| 607 | |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 608 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
| 609 | { |
| 610 | switch (chan->scid) { |
Johan Hedberg | 073d1cf | 2013-04-29 19:35:35 +0300 | [diff] [blame] | 611 | case L2CAP_CID_ATT: |
Andre Guedes | 8c3a4f0 | 2012-05-31 17:01:35 -0300 | [diff] [blame] | 612 | if (mtu < L2CAP_LE_MIN_MTU) |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 613 | return false; |
| 614 | break; |
| 615 | |
| 616 | default: |
| 617 | if (mtu < L2CAP_DEFAULT_MIN_MTU) |
| 618 | return false; |
| 619 | } |
| 620 | |
| 621 | return true; |
| 622 | } |
| 623 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 624 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
| 625 | char __user *optval, unsigned int optlen) |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 626 | { |
| 627 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 628 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 629 | struct l2cap_options opts; |
| 630 | int len, err = 0; |
| 631 | u32 opt; |
| 632 | |
| 633 | BT_DBG("sk %p", sk); |
| 634 | |
| 635 | lock_sock(sk); |
| 636 | |
| 637 | switch (optname) { |
| 638 | case L2CAP_OPTIONS: |
Johan Hedberg | 64b4f8d | 2013-12-02 16:02:03 +0200 | [diff] [blame] | 639 | if (bdaddr_type_is_le(chan->src_type)) { |
| 640 | err = -EINVAL; |
| 641 | break; |
| 642 | } |
| 643 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 644 | if (sk->sk_state == BT_CONNECTED) { |
| 645 | err = -EINVAL; |
| 646 | break; |
| 647 | } |
| 648 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 649 | opts.imtu = chan->imtu; |
| 650 | opts.omtu = chan->omtu; |
| 651 | opts.flush_to = chan->flush_to; |
| 652 | opts.mode = chan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 653 | opts.fcs = chan->fcs; |
| 654 | opts.max_tx = chan->max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 655 | opts.txwin_size = chan->tx_win; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 656 | |
| 657 | len = min_t(unsigned int, sizeof(opts), optlen); |
| 658 | if (copy_from_user((char *) &opts, optval, len)) { |
| 659 | err = -EFAULT; |
| 660 | break; |
| 661 | } |
| 662 | |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 663 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 664 | err = -EINVAL; |
| 665 | break; |
| 666 | } |
| 667 | |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 668 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
| 669 | err = -EINVAL; |
| 670 | break; |
| 671 | } |
| 672 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 673 | chan->mode = opts.mode; |
| 674 | switch (chan->mode) { |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 675 | case L2CAP_MODE_LE_FLOWCTL: |
| 676 | break; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 677 | case L2CAP_MODE_BASIC: |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 678 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 679 | break; |
| 680 | case L2CAP_MODE_ERTM: |
| 681 | case L2CAP_MODE_STREAMING: |
| 682 | if (!disable_ertm) |
| 683 | break; |
| 684 | /* fall through */ |
| 685 | default: |
| 686 | err = -EINVAL; |
| 687 | break; |
| 688 | } |
| 689 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 690 | chan->imtu = opts.imtu; |
| 691 | chan->omtu = opts.omtu; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 692 | chan->fcs = opts.fcs; |
| 693 | chan->max_tx = opts.max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 694 | chan->tx_win = opts.txwin_size; |
Andrei Emeltchenko | 12d5978 | 2012-10-10 17:38:26 +0300 | [diff] [blame] | 695 | chan->flush_to = opts.flush_to; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 696 | break; |
| 697 | |
| 698 | case L2CAP_LM: |
| 699 | if (get_user(opt, (u32 __user *) optval)) { |
| 700 | err = -EFAULT; |
| 701 | break; |
| 702 | } |
| 703 | |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 704 | if (opt & L2CAP_LM_FIPS) { |
| 705 | err = -EINVAL; |
| 706 | break; |
| 707 | } |
| 708 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 709 | if (opt & L2CAP_LM_AUTH) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 710 | chan->sec_level = BT_SECURITY_LOW; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 711 | if (opt & L2CAP_LM_ENCRYPT) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 712 | chan->sec_level = BT_SECURITY_MEDIUM; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 713 | if (opt & L2CAP_LM_SECURE) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 714 | chan->sec_level = BT_SECURITY_HIGH; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 715 | |
Andrei Emeltchenko | 43bd0f3 | 2011-10-11 14:04:34 +0300 | [diff] [blame] | 716 | if (opt & L2CAP_LM_MASTER) |
| 717 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); |
| 718 | else |
| 719 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); |
Andrei Emeltchenko | ecf61bd | 2011-10-11 14:04:32 +0300 | [diff] [blame] | 720 | |
| 721 | if (opt & L2CAP_LM_RELIABLE) |
| 722 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); |
| 723 | else |
| 724 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 725 | break; |
| 726 | |
| 727 | default: |
| 728 | err = -ENOPROTOOPT; |
| 729 | break; |
| 730 | } |
| 731 | |
| 732 | release_sock(sk); |
| 733 | return err; |
| 734 | } |
| 735 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 736 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
| 737 | char __user *optval, unsigned int optlen) |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 738 | { |
| 739 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 740 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 741 | struct bt_security sec; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 742 | struct bt_power pwr; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 743 | struct l2cap_conn *conn; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 744 | int len, err = 0; |
| 745 | u32 opt; |
| 746 | |
| 747 | BT_DBG("sk %p", sk); |
| 748 | |
| 749 | if (level == SOL_L2CAP) |
| 750 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); |
| 751 | |
| 752 | if (level != SOL_BLUETOOTH) |
| 753 | return -ENOPROTOOPT; |
| 754 | |
| 755 | lock_sock(sk); |
| 756 | |
| 757 | switch (optname) { |
| 758 | case BT_SECURITY: |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 759 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Johan Hedberg | e0c888a | 2014-01-25 17:10:07 -0500 | [diff] [blame] | 760 | chan->chan_type != L2CAP_CHAN_FIXED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 761 | chan->chan_type != L2CAP_CHAN_RAW) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 762 | err = -EINVAL; |
| 763 | break; |
| 764 | } |
| 765 | |
| 766 | sec.level = BT_SECURITY_LOW; |
| 767 | |
| 768 | len = min_t(unsigned int, sizeof(sec), optlen); |
| 769 | if (copy_from_user((char *) &sec, optval, len)) { |
| 770 | err = -EFAULT; |
| 771 | break; |
| 772 | } |
| 773 | |
| 774 | if (sec.level < BT_SECURITY_LOW || |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 775 | sec.level > BT_SECURITY_HIGH) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 776 | err = -EINVAL; |
| 777 | break; |
| 778 | } |
| 779 | |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 780 | chan->sec_level = sec.level; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 781 | |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 782 | if (!chan->conn) |
| 783 | break; |
| 784 | |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 785 | conn = chan->conn; |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 786 | |
| 787 | /*change security for LE channels */ |
Johan Hedberg | 073d1cf | 2013-04-29 19:35:35 +0300 | [diff] [blame] | 788 | if (chan->scid == L2CAP_CID_ATT) { |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 789 | if (!conn->hcon->out) { |
| 790 | err = -EINVAL; |
| 791 | break; |
| 792 | } |
| 793 | |
Vinicius Costa Gomes | cc11092 | 2012-08-23 21:32:43 -0300 | [diff] [blame] | 794 | if (smp_conn_security(conn->hcon, sec.level)) |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 795 | break; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 796 | sk->sk_state = BT_CONFIG; |
Gustavo F. Padovan | 3542b854 | 2011-12-28 13:54:17 -0200 | [diff] [blame] | 797 | chan->state = BT_CONFIG; |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 798 | |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 799 | /* or for ACL link */ |
| 800 | } else if ((sk->sk_state == BT_CONNECT2 && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 801 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 802 | sk->sk_state == BT_CONNECTED) { |
| 803 | if (!l2cap_chan_check_security(chan)) |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 804 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 805 | else |
| 806 | sk->sk_state_change(sk); |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 807 | } else { |
| 808 | err = -EINVAL; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 809 | } |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 810 | break; |
| 811 | |
| 812 | case BT_DEFER_SETUP: |
| 813 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
| 814 | err = -EINVAL; |
| 815 | break; |
| 816 | } |
| 817 | |
| 818 | if (get_user(opt, (u32 __user *) optval)) { |
| 819 | err = -EFAULT; |
| 820 | break; |
| 821 | } |
| 822 | |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 823 | if (opt) { |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 824 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 825 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
| 826 | } else { |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 827 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 828 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
| 829 | } |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 830 | break; |
| 831 | |
| 832 | case BT_FLUSHABLE: |
| 833 | if (get_user(opt, (u32 __user *) optval)) { |
| 834 | err = -EFAULT; |
| 835 | break; |
| 836 | } |
| 837 | |
| 838 | if (opt > BT_FLUSHABLE_ON) { |
| 839 | err = -EINVAL; |
| 840 | break; |
| 841 | } |
| 842 | |
| 843 | if (opt == BT_FLUSHABLE_OFF) { |
Johannes Berg | c1f23a2 | 2013-10-07 18:19:16 +0200 | [diff] [blame] | 844 | conn = chan->conn; |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 845 | /* proceed further only when we have l2cap_conn and |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 846 | No Flush support in the LM */ |
| 847 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { |
| 848 | err = -EINVAL; |
| 849 | break; |
| 850 | } |
| 851 | } |
| 852 | |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 853 | if (opt) |
| 854 | set_bit(FLAG_FLUSHABLE, &chan->flags); |
| 855 | else |
| 856 | clear_bit(FLAG_FLUSHABLE, &chan->flags); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 857 | break; |
| 858 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 859 | case BT_POWER: |
| 860 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 861 | chan->chan_type != L2CAP_CHAN_RAW) { |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 862 | err = -EINVAL; |
| 863 | break; |
| 864 | } |
| 865 | |
| 866 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; |
| 867 | |
| 868 | len = min_t(unsigned int, sizeof(pwr), optlen); |
| 869 | if (copy_from_user((char *) &pwr, optval, len)) { |
| 870 | err = -EFAULT; |
| 871 | break; |
| 872 | } |
Andrei Emeltchenko | 15770b1 | 2011-10-11 14:04:33 +0300 | [diff] [blame] | 873 | |
| 874 | if (pwr.force_active) |
| 875 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
| 876 | else |
| 877 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 878 | break; |
| 879 | |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 880 | case BT_CHANNEL_POLICY: |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 881 | if (get_user(opt, (u32 __user *) optval)) { |
| 882 | err = -EFAULT; |
| 883 | break; |
| 884 | } |
| 885 | |
| 886 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { |
| 887 | err = -EINVAL; |
| 888 | break; |
| 889 | } |
| 890 | |
| 891 | if (chan->mode != L2CAP_MODE_ERTM && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 892 | chan->mode != L2CAP_MODE_STREAMING) { |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 893 | err = -EOPNOTSUPP; |
| 894 | break; |
| 895 | } |
| 896 | |
| 897 | chan->chan_policy = (u8) opt; |
Mat Martineau | 3f7a56c | 2012-10-23 15:24:23 -0700 | [diff] [blame] | 898 | |
| 899 | if (sk->sk_state == BT_CONNECTED && |
| 900 | chan->move_role == L2CAP_MOVE_ROLE_NONE) |
| 901 | l2cap_move_start(chan); |
| 902 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 903 | break; |
| 904 | |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 905 | case BT_SNDMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 906 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 907 | err = -EINVAL; |
| 908 | break; |
| 909 | } |
| 910 | |
| 911 | /* Setting is not supported as it's the remote side that |
| 912 | * decides this. |
| 913 | */ |
| 914 | err = -EPERM; |
| 915 | break; |
| 916 | |
| 917 | case BT_RCVMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 918 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 919 | err = -EINVAL; |
| 920 | break; |
| 921 | } |
| 922 | |
| 923 | if (sk->sk_state == BT_CONNECTED) { |
| 924 | err = -EISCONN; |
| 925 | break; |
| 926 | } |
| 927 | |
| 928 | if (get_user(opt, (u32 __user *) optval)) { |
| 929 | err = -EFAULT; |
| 930 | break; |
| 931 | } |
| 932 | |
| 933 | chan->imtu = opt; |
| 934 | break; |
| 935 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 936 | default: |
| 937 | err = -ENOPROTOOPT; |
| 938 | break; |
| 939 | } |
| 940 | |
| 941 | release_sock(sk); |
| 942 | return err; |
| 943 | } |
| 944 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 945 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
| 946 | struct msghdr *msg, size_t len) |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 947 | { |
| 948 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 949 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 950 | int err; |
| 951 | |
| 952 | BT_DBG("sock %p, sk %p", sock, sk); |
| 953 | |
| 954 | err = sock_error(sk); |
| 955 | if (err) |
| 956 | return err; |
| 957 | |
| 958 | if (msg->msg_flags & MSG_OOB) |
| 959 | return -EOPNOTSUPP; |
| 960 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 961 | if (sk->sk_state != BT_CONNECTED) |
Gustavo F. Padovan | 9a91a04 | 2011-04-28 18:50:17 -0300 | [diff] [blame] | 962 | return -ENOTCONN; |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 963 | |
Johan Hedberg | e793dcf | 2013-09-16 13:05:19 +0300 | [diff] [blame] | 964 | lock_sock(sk); |
| 965 | err = bt_sock_wait_ready(sk, msg->msg_flags); |
| 966 | release_sock(sk); |
| 967 | if (err) |
| 968 | return err; |
| 969 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 970 | l2cap_chan_lock(chan); |
Luiz Augusto von Dentz | 5e59b79 | 2011-11-01 10:58:57 +0200 | [diff] [blame] | 971 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 972 | l2cap_chan_unlock(chan); |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 973 | |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 974 | return err; |
| 975 | } |
| 976 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 977 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
| 978 | struct msghdr *msg, size_t len, int flags) |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 979 | { |
| 980 | struct sock *sk = sock->sk; |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 981 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
| 982 | int err; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 983 | |
| 984 | lock_sock(sk); |
| 985 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 986 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
| 987 | &bt_sk(sk)->flags)) { |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 988 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
| 989 | sk->sk_state = BT_CONNECTED; |
| 990 | pi->chan->state = BT_CONNECTED; |
| 991 | __l2cap_le_connect_rsp_defer(pi->chan); |
| 992 | } else { |
| 993 | sk->sk_state = BT_CONFIG; |
| 994 | pi->chan->state = BT_CONFIG; |
| 995 | __l2cap_connect_rsp_defer(pi->chan); |
| 996 | } |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 997 | |
Johan Hedberg | 970871b | 2013-09-25 13:26:05 +0300 | [diff] [blame] | 998 | err = 0; |
| 999 | goto done; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 1000 | } |
| 1001 | |
| 1002 | release_sock(sk); |
| 1003 | |
| 1004 | if (sock->type == SOCK_STREAM) |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1005 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
| 1006 | else |
| 1007 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 1008 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1009 | if (pi->chan->mode != L2CAP_MODE_ERTM) |
| 1010 | return err; |
| 1011 | |
| 1012 | /* Attempt to put pending rx data in the socket buffer */ |
| 1013 | |
| 1014 | lock_sock(sk); |
| 1015 | |
| 1016 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) |
| 1017 | goto done; |
| 1018 | |
| 1019 | if (pi->rx_busy_skb) { |
| 1020 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) |
| 1021 | pi->rx_busy_skb = NULL; |
| 1022 | else |
| 1023 | goto done; |
| 1024 | } |
| 1025 | |
| 1026 | /* Restore data flow when half of the receive buffer is |
| 1027 | * available. This avoids resending large numbers of |
| 1028 | * frames. |
| 1029 | */ |
| 1030 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) |
| 1031 | l2cap_chan_busy(pi->chan, 0); |
| 1032 | |
| 1033 | done: |
| 1034 | release_sock(sk); |
| 1035 | return err; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 1036 | } |
| 1037 | |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1038 | /* Kill socket (only if zapped and orphan) |
| 1039 | * Must be called on unlocked socket. |
| 1040 | */ |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1041 | static void l2cap_sock_kill(struct sock *sk) |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1042 | { |
| 1043 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) |
| 1044 | return; |
| 1045 | |
Andrei Emeltchenko | e05dcc3 | 2012-02-17 11:40:56 +0200 | [diff] [blame] | 1046 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1047 | |
| 1048 | /* Kill poor orphan */ |
Gustavo F. Padovan | 6ff5abb | 2011-04-25 15:10:41 -0300 | [diff] [blame] | 1049 | |
Jaganath Kanakkassery | 4af66c6 | 2012-07-13 18:17:55 +0530 | [diff] [blame] | 1050 | l2cap_chan_put(l2cap_pi(sk)->chan); |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1051 | sock_set_flag(sk, SOCK_DEAD); |
| 1052 | sock_put(sk); |
| 1053 | } |
| 1054 | |
Gustavo Padovan | dc25306 | 2013-10-15 19:24:49 -0300 | [diff] [blame] | 1055 | static int __l2cap_wait_ack(struct sock *sk) |
| 1056 | { |
| 1057 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
| 1058 | DECLARE_WAITQUEUE(wait, current); |
| 1059 | int err = 0; |
| 1060 | int timeo = HZ/5; |
| 1061 | |
| 1062 | add_wait_queue(sk_sleep(sk), &wait); |
| 1063 | set_current_state(TASK_INTERRUPTIBLE); |
| 1064 | while (chan->unacked_frames > 0 && chan->conn) { |
| 1065 | if (!timeo) |
| 1066 | timeo = HZ/5; |
| 1067 | |
| 1068 | if (signal_pending(current)) { |
| 1069 | err = sock_intr_errno(timeo); |
| 1070 | break; |
| 1071 | } |
| 1072 | |
| 1073 | release_sock(sk); |
| 1074 | timeo = schedule_timeout(timeo); |
| 1075 | lock_sock(sk); |
| 1076 | set_current_state(TASK_INTERRUPTIBLE); |
| 1077 | |
| 1078 | err = sock_error(sk); |
| 1079 | if (err) |
| 1080 | break; |
| 1081 | } |
| 1082 | set_current_state(TASK_RUNNING); |
| 1083 | remove_wait_queue(sk_sleep(sk), &wait); |
| 1084 | return err; |
| 1085 | } |
| 1086 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1087 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
| 1088 | { |
| 1089 | struct sock *sk = sock->sk; |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1090 | struct l2cap_chan *chan; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1091 | struct l2cap_conn *conn; |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1092 | int err = 0; |
| 1093 | |
| 1094 | BT_DBG("sock %p, sk %p", sock, sk); |
| 1095 | |
| 1096 | if (!sk) |
| 1097 | return 0; |
| 1098 | |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1099 | chan = l2cap_pi(sk)->chan; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1100 | conn = chan->conn; |
| 1101 | |
| 1102 | if (conn) |
| 1103 | mutex_lock(&conn->chan_lock); |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1104 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1105 | l2cap_chan_lock(chan); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1106 | lock_sock(sk); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1107 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1108 | if (!sk->sk_shutdown) { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1109 | if (chan->mode == L2CAP_MODE_ERTM) |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1110 | err = __l2cap_wait_ack(sk); |
| 1111 | |
| 1112 | sk->sk_shutdown = SHUTDOWN_MASK; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1113 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1114 | release_sock(sk); |
Gustavo F. Padovan | 0f85272 | 2011-05-04 19:42:50 -0300 | [diff] [blame] | 1115 | l2cap_chan_close(chan, 0); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1116 | lock_sock(sk); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1117 | |
| 1118 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) |
| 1119 | err = bt_sock_wait_state(sk, BT_CLOSED, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1120 | sk->sk_lingertime); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1121 | } |
| 1122 | |
| 1123 | if (!err && sk->sk_err) |
| 1124 | err = -sk->sk_err; |
| 1125 | |
| 1126 | release_sock(sk); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1127 | l2cap_chan_unlock(chan); |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1128 | |
| 1129 | if (conn) |
| 1130 | mutex_unlock(&conn->chan_lock); |
| 1131 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1132 | return err; |
| 1133 | } |
| 1134 | |
Gustavo F. Padovan | 554f05b | 2011-02-04 02:36:42 -0200 | [diff] [blame] | 1135 | static int l2cap_sock_release(struct socket *sock) |
| 1136 | { |
| 1137 | struct sock *sk = sock->sk; |
| 1138 | int err; |
| 1139 | |
| 1140 | BT_DBG("sock %p, sk %p", sock, sk); |
| 1141 | |
| 1142 | if (!sk) |
| 1143 | return 0; |
| 1144 | |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1145 | bt_sock_unlink(&l2cap_sk_list, sk); |
| 1146 | |
Gustavo F. Padovan | 554f05b | 2011-02-04 02:36:42 -0200 | [diff] [blame] | 1147 | err = l2cap_sock_shutdown(sock, 2); |
| 1148 | |
| 1149 | sock_orphan(sk); |
| 1150 | l2cap_sock_kill(sk); |
| 1151 | return err; |
| 1152 | } |
| 1153 | |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1154 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
| 1155 | { |
| 1156 | struct sock *sk; |
| 1157 | |
| 1158 | BT_DBG("parent %p", parent); |
| 1159 | |
| 1160 | /* Close not yet accepted channels */ |
| 1161 | while ((sk = bt_accept_dequeue(parent, NULL))) { |
| 1162 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
| 1163 | |
| 1164 | l2cap_chan_lock(chan); |
| 1165 | __clear_chan_timer(chan); |
| 1166 | l2cap_chan_close(chan, ECONNRESET); |
| 1167 | l2cap_chan_unlock(chan); |
| 1168 | |
| 1169 | l2cap_sock_kill(sk); |
| 1170 | } |
| 1171 | } |
| 1172 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1173 | static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1174 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1175 | struct sock *sk, *parent = chan->data; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1176 | |
Gustavo Padovan | 8ffb929 | 2013-10-21 14:21:41 -0200 | [diff] [blame] | 1177 | lock_sock(parent); |
| 1178 | |
Gustavo Padovan | 5382669 | 2012-05-27 22:27:55 -0300 | [diff] [blame] | 1179 | /* Check for backlog size */ |
| 1180 | if (sk_acceptq_is_full(parent)) { |
| 1181 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
| 1182 | return NULL; |
| 1183 | } |
| 1184 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1185 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1186 | GFP_ATOMIC); |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1187 | if (!sk) |
| 1188 | return NULL; |
| 1189 | |
Octavian Purdila | d22015a | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 1190 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
| 1191 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1192 | l2cap_sock_init(sk, parent); |
| 1193 | |
Gustavo Padovan | 644912e | 2012-10-12 19:35:23 +0800 | [diff] [blame] | 1194 | bt_accept_enqueue(parent, sk); |
| 1195 | |
Gustavo Padovan | 8ffb929 | 2013-10-21 14:21:41 -0200 | [diff] [blame] | 1196 | release_sock(parent); |
| 1197 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1198 | return l2cap_pi(sk)->chan; |
| 1199 | } |
| 1200 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1201 | static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1202 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1203 | struct sock *sk = chan->data; |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1204 | int err; |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1205 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1206 | lock_sock(sk); |
| 1207 | |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1208 | if (l2cap_pi(sk)->rx_busy_skb) { |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1209 | err = -ENOMEM; |
| 1210 | goto done; |
| 1211 | } |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1212 | |
| 1213 | err = sock_queue_rcv_skb(sk, skb); |
| 1214 | |
| 1215 | /* For ERTM, handle one skb that doesn't fit into the recv |
| 1216 | * buffer. This is important to do because the data frames |
| 1217 | * have already been acked, so the skb cannot be discarded. |
| 1218 | * |
| 1219 | * Notify the l2cap core that the buffer is full, so the |
| 1220 | * LOCAL_BUSY state is entered and no more frames are |
| 1221 | * acked and reassembled until there is buffer space |
| 1222 | * available. |
| 1223 | */ |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1224 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
| 1225 | l2cap_pi(sk)->rx_busy_skb = skb; |
| 1226 | l2cap_chan_busy(chan, 1); |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1227 | err = 0; |
| 1228 | } |
| 1229 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1230 | done: |
| 1231 | release_sock(sk); |
| 1232 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1233 | return err; |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1234 | } |
| 1235 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1236 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1237 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1238 | struct sock *sk = chan->data; |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1239 | |
| 1240 | l2cap_sock_kill(sk); |
| 1241 | } |
| 1242 | |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1243 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
| 1244 | { |
| 1245 | struct sock *sk = chan->data; |
| 1246 | struct sock *parent; |
| 1247 | |
| 1248 | lock_sock(sk); |
| 1249 | |
| 1250 | parent = bt_sk(sk)->parent; |
| 1251 | |
| 1252 | sock_set_flag(sk, SOCK_ZAPPED); |
| 1253 | |
| 1254 | switch (chan->state) { |
| 1255 | case BT_OPEN: |
| 1256 | case BT_BOUND: |
| 1257 | case BT_CLOSED: |
| 1258 | break; |
| 1259 | case BT_LISTEN: |
| 1260 | l2cap_sock_cleanup_listen(sk); |
| 1261 | sk->sk_state = BT_CLOSED; |
| 1262 | chan->state = BT_CLOSED; |
| 1263 | |
| 1264 | break; |
| 1265 | default: |
| 1266 | sk->sk_state = BT_CLOSED; |
| 1267 | chan->state = BT_CLOSED; |
| 1268 | |
| 1269 | sk->sk_err = err; |
| 1270 | |
| 1271 | if (parent) { |
| 1272 | bt_accept_unlink(sk); |
| 1273 | parent->sk_data_ready(parent, 0); |
| 1274 | } else { |
| 1275 | sk->sk_state_change(sk); |
| 1276 | } |
| 1277 | |
| 1278 | break; |
| 1279 | } |
| 1280 | |
| 1281 | release_sock(sk); |
| 1282 | } |
| 1283 | |
Gustavo Padovan | 53f5212 | 2013-10-15 19:24:45 -0300 | [diff] [blame] | 1284 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
| 1285 | int err) |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1286 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1287 | struct sock *sk = chan->data; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1288 | |
| 1289 | sk->sk_state = state; |
Gustavo Padovan | 53f5212 | 2013-10-15 19:24:45 -0300 | [diff] [blame] | 1290 | |
| 1291 | if (err) |
| 1292 | sk->sk_err = err; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1293 | } |
| 1294 | |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1295 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1296 | unsigned long len, int nb) |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1297 | { |
Gustavo Padovan | 0f2c615 | 2013-10-21 14:21:38 -0200 | [diff] [blame] | 1298 | struct sock *sk = chan->data; |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1299 | struct sk_buff *skb; |
| 1300 | int err; |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1301 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 1302 | l2cap_chan_unlock(chan); |
Gustavo Padovan | 0f2c615 | 2013-10-21 14:21:38 -0200 | [diff] [blame] | 1303 | skb = bt_skb_send_alloc(sk, len, nb, &err); |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 1304 | l2cap_chan_lock(chan); |
| 1305 | |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1306 | if (!skb) |
| 1307 | return ERR_PTR(err); |
| 1308 | |
Gustavo Padovan | 0e790c6 | 2013-10-21 18:22:24 -0200 | [diff] [blame] | 1309 | bt_cb(skb)->chan = chan; |
| 1310 | |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1311 | return skb; |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1312 | } |
| 1313 | |
Andrei Emeltchenko | 54a59aa | 2012-05-27 22:27:53 -0300 | [diff] [blame] | 1314 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
| 1315 | { |
| 1316 | struct sock *sk = chan->data; |
| 1317 | struct sock *parent; |
| 1318 | |
| 1319 | lock_sock(sk); |
| 1320 | |
| 1321 | parent = bt_sk(sk)->parent; |
| 1322 | |
| 1323 | BT_DBG("sk %p, parent %p", sk, parent); |
| 1324 | |
| 1325 | sk->sk_state = BT_CONNECTED; |
| 1326 | sk->sk_state_change(sk); |
| 1327 | |
| 1328 | if (parent) |
| 1329 | parent->sk_data_ready(parent, 0); |
| 1330 | |
| 1331 | release_sock(sk); |
| 1332 | } |
| 1333 | |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1334 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
| 1335 | { |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1336 | struct sock *parent, *sk = chan->data; |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1337 | |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1338 | lock_sock(sk); |
| 1339 | |
| 1340 | parent = bt_sk(sk)->parent; |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1341 | if (parent) |
| 1342 | parent->sk_data_ready(parent, 0); |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1343 | |
| 1344 | release_sock(sk); |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1345 | } |
| 1346 | |
Marcel Holtmann | d97c899 | 2013-10-14 02:53:54 -0700 | [diff] [blame] | 1347 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
| 1348 | { |
| 1349 | struct sock *sk = chan->data; |
| 1350 | |
| 1351 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
| 1352 | sk->sk_state_change(sk); |
| 1353 | } |
| 1354 | |
Gustavo Padovan | 5ec1bbe | 2013-10-15 19:24:48 -0300 | [diff] [blame] | 1355 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
| 1356 | { |
| 1357 | struct sock *sk = chan->data; |
| 1358 | |
| 1359 | lock_sock(sk); |
| 1360 | sk->sk_shutdown = SHUTDOWN_MASK; |
| 1361 | release_sock(sk); |
| 1362 | } |
| 1363 | |
Gustavo Padovan | 8d836d7 | 2013-10-15 19:24:47 -0300 | [diff] [blame] | 1364 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
| 1365 | { |
| 1366 | struct sock *sk = chan->data; |
| 1367 | |
| 1368 | return sk->sk_sndtimeo; |
| 1369 | } |
| 1370 | |
Johan Hedberg | 837776f | 2013-10-15 11:03:18 +0300 | [diff] [blame] | 1371 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
| 1372 | { |
| 1373 | struct sock *sk = chan->data; |
| 1374 | |
| 1375 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
| 1376 | sk->sk_state_change(sk); |
| 1377 | } |
| 1378 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1379 | static struct l2cap_ops l2cap_chan_ops = { |
| 1380 | .name = "L2CAP Socket Interface", |
| 1381 | .new_connection = l2cap_sock_new_connection_cb, |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1382 | .recv = l2cap_sock_recv_cb, |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1383 | .close = l2cap_sock_close_cb, |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1384 | .teardown = l2cap_sock_teardown_cb, |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1385 | .state_change = l2cap_sock_state_change_cb, |
Andrei Emeltchenko | 54a59aa | 2012-05-27 22:27:53 -0300 | [diff] [blame] | 1386 | .ready = l2cap_sock_ready_cb, |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1387 | .defer = l2cap_sock_defer_cb, |
Marcel Holtmann | d97c899 | 2013-10-14 02:53:54 -0700 | [diff] [blame] | 1388 | .resume = l2cap_sock_resume_cb, |
Johan Hedberg | 837776f | 2013-10-15 11:03:18 +0300 | [diff] [blame] | 1389 | .suspend = l2cap_sock_suspend_cb, |
Gustavo Padovan | 5ec1bbe | 2013-10-15 19:24:48 -0300 | [diff] [blame] | 1390 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
Gustavo Padovan | 8d836d7 | 2013-10-15 19:24:47 -0300 | [diff] [blame] | 1391 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1392 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1393 | }; |
| 1394 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1395 | static void l2cap_sock_destruct(struct sock *sk) |
| 1396 | { |
| 1397 | BT_DBG("sk %p", sk); |
| 1398 | |
Sasha Levin | 23d3a86 | 2012-10-08 16:48:32 -0400 | [diff] [blame] | 1399 | if (l2cap_pi(sk)->chan) |
| 1400 | l2cap_chan_put(l2cap_pi(sk)->chan); |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1401 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1402 | if (l2cap_pi(sk)->rx_busy_skb) { |
| 1403 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); |
| 1404 | l2cap_pi(sk)->rx_busy_skb = NULL; |
| 1405 | } |
| 1406 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1407 | skb_queue_purge(&sk->sk_receive_queue); |
| 1408 | skb_queue_purge(&sk->sk_write_queue); |
| 1409 | } |
| 1410 | |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1411 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
| 1412 | int *msg_namelen) |
| 1413 | { |
Steffen Hurrle | 342dfc3 | 2014-01-17 22:53:15 +0100 | [diff] [blame] | 1414 | DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1415 | |
| 1416 | memset(la, 0, sizeof(struct sockaddr_l2)); |
| 1417 | la->l2_family = AF_BLUETOOTH; |
| 1418 | la->l2_psm = bt_cb(skb)->psm; |
| 1419 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); |
| 1420 | |
| 1421 | *msg_namelen = sizeof(struct sockaddr_l2); |
| 1422 | } |
| 1423 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1424 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1425 | { |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1426 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1427 | |
| 1428 | BT_DBG("sk %p", sk); |
| 1429 | |
| 1430 | if (parent) { |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 1431 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
| 1432 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1433 | sk->sk_type = parent->sk_type; |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 1434 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1435 | |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1436 | chan->chan_type = pchan->chan_type; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1437 | chan->imtu = pchan->imtu; |
| 1438 | chan->omtu = pchan->omtu; |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 1439 | chan->conf_state = pchan->conf_state; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1440 | chan->mode = pchan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 1441 | chan->fcs = pchan->fcs; |
| 1442 | chan->max_tx = pchan->max_tx; |
| 1443 | chan->tx_win = pchan->tx_win; |
Andrei Emeltchenko | 6b3c710 | 2011-11-02 09:57:10 +0200 | [diff] [blame] | 1444 | chan->tx_win_max = pchan->tx_win_max; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 1445 | chan->sec_level = pchan->sec_level; |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 1446 | chan->flags = pchan->flags; |
Johan Hedberg | 0cd75f7 | 2013-05-17 13:09:05 +0300 | [diff] [blame] | 1447 | chan->tx_credits = pchan->tx_credits; |
| 1448 | chan->rx_credits = pchan->rx_credits; |
Paul Moore | 6230c9b | 2011-10-07 09:40:59 +0000 | [diff] [blame] | 1449 | |
Johan Hedberg | 7a8e5a3 | 2014-01-25 17:10:09 -0500 | [diff] [blame] | 1450 | if (chan->chan_type == L2CAP_CHAN_FIXED) { |
| 1451 | chan->scid = pchan->scid; |
| 1452 | chan->dcid = pchan->scid; |
| 1453 | } |
| 1454 | |
Paul Moore | 6230c9b | 2011-10-07 09:40:59 +0000 | [diff] [blame] | 1455 | security_sk_clone(parent, sk); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1456 | } else { |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1457 | switch (sk->sk_type) { |
| 1458 | case SOCK_RAW: |
| 1459 | chan->chan_type = L2CAP_CHAN_RAW; |
| 1460 | break; |
| 1461 | case SOCK_DGRAM: |
| 1462 | chan->chan_type = L2CAP_CHAN_CONN_LESS; |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1463 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1464 | break; |
| 1465 | case SOCK_SEQPACKET: |
| 1466 | case SOCK_STREAM: |
| 1467 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; |
| 1468 | break; |
| 1469 | } |
| 1470 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1471 | chan->imtu = L2CAP_DEFAULT_MTU; |
| 1472 | chan->omtu = 0; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1473 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1474 | chan->mode = L2CAP_MODE_ERTM; |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 1475 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1476 | } else { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1477 | chan->mode = L2CAP_MODE_BASIC; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1478 | } |
Andrei Emeltchenko | bd4b165 | 2012-03-28 16:31:25 +0300 | [diff] [blame] | 1479 | |
| 1480 | l2cap_chan_set_defaults(chan); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1481 | } |
| 1482 | |
| 1483 | /* Default config options */ |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1484 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1485 | |
| 1486 | chan->data = sk; |
| 1487 | chan->ops = &l2cap_chan_ops; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | static struct proto l2cap_proto = { |
| 1491 | .name = "L2CAP", |
| 1492 | .owner = THIS_MODULE, |
| 1493 | .obj_size = sizeof(struct l2cap_pinfo) |
| 1494 | }; |
| 1495 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1496 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
| 1497 | int proto, gfp_t prio) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1498 | { |
| 1499 | struct sock *sk; |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1500 | struct l2cap_chan *chan; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1501 | |
| 1502 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); |
| 1503 | if (!sk) |
| 1504 | return NULL; |
| 1505 | |
| 1506 | sock_init_data(sock, sk); |
| 1507 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); |
| 1508 | |
| 1509 | sk->sk_destruct = l2cap_sock_destruct; |
Marcel Holtmann | ba13ccd | 2012-03-01 14:25:33 -0800 | [diff] [blame] | 1510 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1511 | |
| 1512 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 1513 | |
| 1514 | sk->sk_protocol = proto; |
| 1515 | sk->sk_state = BT_OPEN; |
| 1516 | |
Gustavo Padovan | eef1d9b | 2012-03-25 13:59:16 -0300 | [diff] [blame] | 1517 | chan = l2cap_chan_create(); |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1518 | if (!chan) { |
Jaganath Kanakkassery | 49dfbb9 | 2012-07-19 12:54:04 +0530 | [diff] [blame] | 1519 | sk_free(sk); |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1520 | return NULL; |
| 1521 | } |
| 1522 | |
Mat Martineau | 61d6ef3 | 2012-04-27 16:50:50 -0700 | [diff] [blame] | 1523 | l2cap_chan_hold(chan); |
| 1524 | |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1525 | l2cap_pi(sk)->chan = chan; |
| 1526 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1527 | return sk; |
| 1528 | } |
| 1529 | |
| 1530 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, |
| 1531 | int kern) |
| 1532 | { |
| 1533 | struct sock *sk; |
| 1534 | |
| 1535 | BT_DBG("sock %p", sock); |
| 1536 | |
| 1537 | sock->state = SS_UNCONNECTED; |
| 1538 | |
| 1539 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1540 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1541 | return -ESOCKTNOSUPPORT; |
| 1542 | |
| 1543 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
| 1544 | return -EPERM; |
| 1545 | |
| 1546 | sock->ops = &l2cap_sock_ops; |
| 1547 | |
| 1548 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
| 1549 | if (!sk) |
| 1550 | return -ENOMEM; |
| 1551 | |
| 1552 | l2cap_sock_init(sk, NULL); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1553 | bt_sock_link(&l2cap_sk_list, sk); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1554 | return 0; |
| 1555 | } |
| 1556 | |
Gustavo F. Padovan | cf2f90f | 2011-04-27 18:40:39 -0300 | [diff] [blame] | 1557 | static const struct proto_ops l2cap_sock_ops = { |
Gustavo F. Padovan | 6539058 | 2011-02-04 02:33:56 -0200 | [diff] [blame] | 1558 | .family = PF_BLUETOOTH, |
| 1559 | .owner = THIS_MODULE, |
| 1560 | .release = l2cap_sock_release, |
| 1561 | .bind = l2cap_sock_bind, |
| 1562 | .connect = l2cap_sock_connect, |
| 1563 | .listen = l2cap_sock_listen, |
| 1564 | .accept = l2cap_sock_accept, |
| 1565 | .getname = l2cap_sock_getname, |
| 1566 | .sendmsg = l2cap_sock_sendmsg, |
| 1567 | .recvmsg = l2cap_sock_recvmsg, |
| 1568 | .poll = bt_sock_poll, |
| 1569 | .ioctl = bt_sock_ioctl, |
| 1570 | .mmap = sock_no_mmap, |
| 1571 | .socketpair = sock_no_socketpair, |
| 1572 | .shutdown = l2cap_sock_shutdown, |
| 1573 | .setsockopt = l2cap_sock_setsockopt, |
| 1574 | .getsockopt = l2cap_sock_getsockopt |
| 1575 | }; |
| 1576 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1577 | static const struct net_proto_family l2cap_sock_family_ops = { |
| 1578 | .family = PF_BLUETOOTH, |
| 1579 | .owner = THIS_MODULE, |
| 1580 | .create = l2cap_sock_create, |
| 1581 | }; |
| 1582 | |
| 1583 | int __init l2cap_init_sockets(void) |
| 1584 | { |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1585 | int err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1586 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1587 | err = proto_register(&l2cap_proto, 0); |
| 1588 | if (err < 0) |
| 1589 | return err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1590 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1591 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1592 | if (err < 0) { |
| 1593 | BT_ERR("L2CAP socket registration failed"); |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1594 | goto error; |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1595 | } |
| 1596 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 1597 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1598 | NULL); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1599 | if (err < 0) { |
| 1600 | BT_ERR("Failed to create L2CAP proc file"); |
| 1601 | bt_sock_unregister(BTPROTO_L2CAP); |
| 1602 | goto error; |
| 1603 | } |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1604 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1605 | BT_INFO("L2CAP socket layer initialized"); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1606 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1607 | return 0; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1608 | |
| 1609 | error: |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1610 | proto_unregister(&l2cap_proto); |
| 1611 | return err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1612 | } |
| 1613 | |
| 1614 | void l2cap_cleanup_sockets(void) |
| 1615 | { |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1616 | bt_procfs_cleanup(&init_net, "l2cap"); |
David Herrmann | 5e9d7f8 | 2013-02-24 19:36:51 +0100 | [diff] [blame] | 1617 | bt_sock_unregister(BTPROTO_L2CAP); |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1618 | proto_unregister(&l2cap_proto); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1619 | } |