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 | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 102 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 103 | /* We only allow ATT user space socket */ |
Johan Hedberg | 9149761 | 2013-12-02 11:20:20 +0200 | [diff] [blame] | 104 | if (la.l2_cid && |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 105 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 106 | return -EINVAL; |
| 107 | } |
| 108 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 109 | lock_sock(sk); |
| 110 | |
| 111 | if (sk->sk_state != BT_OPEN) { |
| 112 | err = -EBADFD; |
| 113 | goto done; |
| 114 | } |
| 115 | |
| 116 | if (la.l2_psm) { |
| 117 | __u16 psm = __le16_to_cpu(la.l2_psm); |
| 118 | |
Johan Hedberg | 4946096 | 2013-10-08 13:55:46 +0200 | [diff] [blame] | 119 | if (la.l2_bdaddr_type == BDADDR_BREDR) |
| 120 | err = l2cap_validate_bredr_psm(psm); |
| 121 | else |
| 122 | err = l2cap_validate_le_psm(psm); |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 123 | |
Johan Hedberg | 4946096 | 2013-10-08 13:55:46 +0200 | [diff] [blame] | 124 | if (err) |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 125 | goto done; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 126 | } |
| 127 | |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 128 | if (la.l2_cid) |
Santosh Nayak | 6e4aff1 | 2012-03-01 22:46:36 +0530 | [diff] [blame] | 129 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 130 | else |
| 131 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 132 | |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 133 | if (err < 0) |
| 134 | goto done; |
| 135 | |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 136 | switch (chan->chan_type) { |
Marcel Holtmann | 3124b84 | 2013-10-12 07:19:32 -0700 | [diff] [blame] | 137 | case L2CAP_CHAN_CONN_LESS: |
| 138 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) |
| 139 | chan->sec_level = BT_SECURITY_SDP; |
| 140 | break; |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 141 | case L2CAP_CHAN_CONN_ORIENTED: |
| 142 | if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || |
| 143 | __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) |
| 144 | chan->sec_level = BT_SECURITY_SDP; |
| 145 | break; |
Johan Hedberg | cb6ca8e | 2014-01-06 18:27:02 +0200 | [diff] [blame] | 146 | case L2CAP_CHAN_RAW: |
| 147 | chan->sec_level = BT_SECURITY_SDP; |
| 148 | break; |
Johan Hedberg | c16900c | 2014-08-15 21:17:06 +0300 | [diff] [blame] | 149 | case L2CAP_CHAN_FIXED: |
| 150 | /* Fixed channels default to the L2CAP core not holding a |
| 151 | * hci_conn reference for them. For fixed channels mapping to |
| 152 | * L2CAP sockets we do want to hold a reference so set the |
| 153 | * appropriate flag to request it. |
| 154 | */ |
| 155 | set_bit(FLAG_HOLD_HCI_CONN, &chan->flags); |
| 156 | break; |
Marcel Holtmann | 6a974b5 | 2013-10-12 07:19:31 -0700 | [diff] [blame] | 157 | } |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 158 | |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 159 | bacpy(&chan->src, &la.l2_bdaddr); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 160 | chan->src_type = la.l2_bdaddr_type; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 161 | |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 162 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
Johan Hedberg | 0ce43ce | 2013-12-05 14:55:33 +0200 | [diff] [blame] | 163 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 164 | |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 165 | chan->state = BT_BOUND; |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 166 | sk->sk_state = BT_BOUND; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 167 | |
| 168 | done: |
| 169 | release_sock(sk); |
| 170 | return err; |
| 171 | } |
| 172 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 173 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, |
| 174 | int alen, int flags) |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 175 | { |
| 176 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 177 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 178 | struct sockaddr_l2 la; |
| 179 | int len, err = 0; |
| 180 | |
| 181 | BT_DBG("sk %p", sk); |
| 182 | |
| 183 | if (!addr || alen < sizeof(addr->sa_family) || |
| 184 | addr->sa_family != AF_BLUETOOTH) |
| 185 | return -EINVAL; |
| 186 | |
| 187 | memset(&la, 0, sizeof(la)); |
| 188 | len = min_t(unsigned int, sizeof(la), alen); |
| 189 | memcpy(&la, addr, len); |
| 190 | |
Ville Tervo | acd7d37 | 2011-02-10 22:38:49 -0300 | [diff] [blame] | 191 | if (la.l2_cid && la.l2_psm) |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 192 | return -EINVAL; |
| 193 | |
Johan Hedberg | 80c1a2e | 2013-10-14 21:17:52 +0300 | [diff] [blame] | 194 | if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) |
| 195 | return -EINVAL; |
| 196 | |
Johan Hedberg | eb62249 | 2013-10-18 11:49:25 +0300 | [diff] [blame] | 197 | /* Check that the socket wasn't bound to something that |
| 198 | * conflicts with the address given to connect(). If chan->src |
| 199 | * is BDADDR_ANY it means bind() was never used, in which case |
| 200 | * chan->src_type and la.l2_bdaddr_type do not need to match. |
| 201 | */ |
| 202 | if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && |
| 203 | bdaddr_type_is_le(la.l2_bdaddr_type)) { |
| 204 | /* Old user space versions will try to incorrectly bind |
| 205 | * the ATT socket using BDADDR_BREDR. We need to accept |
| 206 | * this and fix up the source address type only when |
| 207 | * both the source CID and destination CID indicate |
| 208 | * ATT. Anything else is an invalid combination. |
| 209 | */ |
| 210 | if (chan->scid != L2CAP_CID_ATT || |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 211 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
Johan Hedberg | eb62249 | 2013-10-18 11:49:25 +0300 | [diff] [blame] | 212 | return -EINVAL; |
| 213 | |
| 214 | /* We don't have the hdev available here to make a |
| 215 | * better decision on random vs public, but since all |
| 216 | * user space versions that exhibit this issue anyway do |
| 217 | * not support random local addresses assuming public |
| 218 | * here is good enough. |
| 219 | */ |
| 220 | chan->src_type = BDADDR_LE_PUBLIC; |
| 221 | } |
Johan Hedberg | 1f20938 | 2013-10-14 21:17:53 +0300 | [diff] [blame] | 222 | |
| 223 | if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) |
| 224 | return -EINVAL; |
| 225 | |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 226 | if (bdaddr_type_is_le(la.l2_bdaddr_type)) { |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 227 | /* We only allow ATT user space socket */ |
Johan Hedberg | 9149761 | 2013-12-02 11:20:20 +0200 | [diff] [blame] | 228 | if (la.l2_cid && |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 229 | la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) |
Johan Hedberg | bfe4655 | 2013-10-16 17:13:26 +0300 | [diff] [blame] | 230 | return -EINVAL; |
| 231 | } |
| 232 | |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 233 | if (chan->psm && bdaddr_type_is_le(chan->src_type)) |
Johan Hedberg | 0ce43ce | 2013-12-05 14:55:33 +0200 | [diff] [blame] | 234 | chan->mode = L2CAP_MODE_LE_FLOWCTL; |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 235 | |
Santosh Nayak | 6e4aff1 | 2012-03-01 22:46:36 +0530 | [diff] [blame] | 236 | 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] | 237 | &la.l2_bdaddr, la.l2_bdaddr_type); |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 238 | if (err) |
Andrei Emeltchenko | b3fb611 | 2012-02-22 17:11:57 +0200 | [diff] [blame] | 239 | return err; |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 240 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 241 | lock_sock(sk); |
| 242 | |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 243 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 244 | sock_sndtimeo(sk, flags & O_NONBLOCK)); |
Andrei Emeltchenko | b3fb611 | 2012-02-22 17:11:57 +0200 | [diff] [blame] | 245 | |
| 246 | release_sock(sk); |
| 247 | |
Gustavo F. Padovan | 4e34c50 | 2011-02-04 02:56:13 -0200 | [diff] [blame] | 248 | return err; |
| 249 | } |
| 250 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 251 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
| 252 | { |
| 253 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 254 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 255 | int err = 0; |
| 256 | |
| 257 | BT_DBG("sk %p backlog %d", sk, backlog); |
| 258 | |
| 259 | lock_sock(sk); |
| 260 | |
Marcel Holtmann | 6b3af73 | 2012-04-19 13:43:51 +0200 | [diff] [blame] | 261 | if (sk->sk_state != BT_BOUND) { |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 262 | err = -EBADFD; |
| 263 | goto done; |
| 264 | } |
| 265 | |
Marcel Holtmann | 6b3af73 | 2012-04-19 13:43:51 +0200 | [diff] [blame] | 266 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
| 267 | err = -EINVAL; |
| 268 | goto done; |
| 269 | } |
| 270 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 271 | switch (chan->mode) { |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 272 | case L2CAP_MODE_BASIC: |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 273 | case L2CAP_MODE_LE_FLOWCTL: |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 274 | break; |
| 275 | case L2CAP_MODE_ERTM: |
| 276 | case L2CAP_MODE_STREAMING: |
| 277 | if (!disable_ertm) |
| 278 | break; |
| 279 | /* fall through */ |
| 280 | default: |
Johan Hedberg | beb19e4 | 2014-07-18 11:15:26 +0300 | [diff] [blame] | 281 | err = -EOPNOTSUPP; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 282 | goto done; |
| 283 | } |
| 284 | |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 285 | sk->sk_max_ack_backlog = backlog; |
| 286 | sk->sk_ack_backlog = 0; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 287 | |
| 288 | chan->state = BT_LISTEN; |
Gustavo F. Padovan | af6bcd8 | 2011-02-04 02:40:28 -0200 | [diff] [blame] | 289 | sk->sk_state = BT_LISTEN; |
| 290 | |
| 291 | done: |
| 292 | release_sock(sk); |
| 293 | return err; |
| 294 | } |
| 295 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 296 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, |
| 297 | int flags) |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 298 | { |
| 299 | DECLARE_WAITQUEUE(wait, current); |
| 300 | struct sock *sk = sock->sk, *nsk; |
| 301 | long timeo; |
| 302 | int err = 0; |
| 303 | |
| 304 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
| 305 | |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 306 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
| 307 | |
| 308 | BT_DBG("sk %p timeo %ld", sk, timeo); |
| 309 | |
| 310 | /* Wait for an incoming connection. (wake-one). */ |
| 311 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 312 | while (1) { |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 313 | set_current_state(TASK_INTERRUPTIBLE); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 314 | |
| 315 | if (sk->sk_state != BT_LISTEN) { |
| 316 | err = -EBADFD; |
| 317 | break; |
| 318 | } |
| 319 | |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 320 | nsk = bt_accept_dequeue(sk, newsock); |
| 321 | if (nsk) |
| 322 | break; |
| 323 | |
| 324 | if (!timeo) { |
| 325 | err = -EAGAIN; |
| 326 | break; |
| 327 | } |
| 328 | |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 329 | if (signal_pending(current)) { |
| 330 | err = sock_intr_errno(timeo); |
| 331 | break; |
| 332 | } |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 333 | |
| 334 | release_sock(sk); |
| 335 | timeo = schedule_timeout(timeo); |
| 336 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 337 | } |
Peter Hurley | f9a3c20 | 2011-07-24 00:10:52 -0400 | [diff] [blame] | 338 | __set_current_state(TASK_RUNNING); |
Gustavo F. Padovan | c47b7c7 | 2011-02-04 02:42:23 -0200 | [diff] [blame] | 339 | remove_wait_queue(sk_sleep(sk), &wait); |
| 340 | |
| 341 | if (err) |
| 342 | goto done; |
| 343 | |
| 344 | newsock->state = SS_CONNECTED; |
| 345 | |
| 346 | BT_DBG("new socket %p", nsk); |
| 347 | |
| 348 | done: |
| 349 | release_sock(sk); |
| 350 | return err; |
| 351 | } |
| 352 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 353 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 354 | int *len, int peer) |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 355 | { |
| 356 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; |
| 357 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 358 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 359 | |
| 360 | BT_DBG("sock %p, sk %p", sock, sk); |
| 361 | |
Johan Hedberg | e8b1ab9 | 2014-03-26 15:49:18 +0200 | [diff] [blame] | 362 | if (peer && sk->sk_state != BT_CONNECTED && |
Johan Hedberg | bf19d51 | 2014-07-01 12:07:23 +0300 | [diff] [blame] | 363 | sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2 && |
| 364 | sk->sk_state != BT_CONFIG) |
Johan Hedberg | b783fbc | 2014-01-28 15:16:49 -0800 | [diff] [blame] | 365 | return -ENOTCONN; |
| 366 | |
Mathias Krause | 792039c | 2012-08-15 11:31:51 +0000 | [diff] [blame] | 367 | memset(la, 0, sizeof(struct sockaddr_l2)); |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 368 | addr->sa_family = AF_BLUETOOTH; |
| 369 | *len = sizeof(struct sockaddr_l2); |
| 370 | |
Johan Hedberg | d7e5e76 | 2014-01-28 15:16:51 -0800 | [diff] [blame] | 371 | la->l2_psm = chan->psm; |
| 372 | |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 373 | if (peer) { |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 374 | bacpy(&la->l2_bdaddr, &chan->dst); |
Gustavo F. Padovan | fe4128e | 2011-04-13 19:50:45 -0300 | [diff] [blame] | 375 | la->l2_cid = cpu_to_le16(chan->dcid); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 376 | la->l2_bdaddr_type = chan->dst_type; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 377 | } else { |
Marcel Holtmann | 7eafc59 | 2013-10-13 08:12:47 -0700 | [diff] [blame] | 378 | bacpy(&la->l2_bdaddr, &chan->src); |
Gustavo F. Padovan | fe4128e | 2011-04-13 19:50:45 -0300 | [diff] [blame] | 379 | la->l2_cid = cpu_to_le16(chan->scid); |
Marcel Holtmann | 4f1654e | 2013-10-13 08:50:41 -0700 | [diff] [blame] | 380 | la->l2_bdaddr_type = chan->src_type; |
Gustavo F. Padovan | d7175d5 | 2011-02-04 02:43:46 -0200 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 386 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, |
| 387 | char __user *optval, int __user *optlen) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 388 | { |
| 389 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 390 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 391 | struct l2cap_options opts; |
| 392 | struct l2cap_conninfo cinfo; |
| 393 | int len, err = 0; |
| 394 | u32 opt; |
| 395 | |
| 396 | BT_DBG("sk %p", sk); |
| 397 | |
| 398 | if (get_user(len, optlen)) |
| 399 | return -EFAULT; |
| 400 | |
| 401 | lock_sock(sk); |
| 402 | |
| 403 | switch (optname) { |
| 404 | case L2CAP_OPTIONS: |
Johan Hedberg | 64b4f8d | 2013-12-02 16:02:03 +0200 | [diff] [blame] | 405 | /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since |
| 406 | * legacy ATT code depends on getsockopt for |
| 407 | * L2CAP_OPTIONS we need to let this pass. |
| 408 | */ |
| 409 | if (bdaddr_type_is_le(chan->src_type) && |
| 410 | chan->scid != L2CAP_CID_ATT) { |
| 411 | err = -EINVAL; |
| 412 | break; |
| 413 | } |
| 414 | |
Vasiliy Kulikov | e3fb592 | 2011-02-10 20:59:42 +0300 | [diff] [blame] | 415 | memset(&opts, 0, sizeof(opts)); |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 416 | opts.imtu = chan->imtu; |
| 417 | opts.omtu = chan->omtu; |
| 418 | opts.flush_to = chan->flush_to; |
| 419 | opts.mode = chan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 420 | opts.fcs = chan->fcs; |
| 421 | opts.max_tx = chan->max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 422 | opts.txwin_size = chan->tx_win; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 423 | |
| 424 | len = min_t(unsigned int, len, sizeof(opts)); |
| 425 | if (copy_to_user(optval, (char *) &opts, len)) |
| 426 | err = -EFAULT; |
| 427 | |
| 428 | break; |
| 429 | |
| 430 | case L2CAP_LM: |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 431 | switch (chan->sec_level) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 432 | case BT_SECURITY_LOW: |
| 433 | opt = L2CAP_LM_AUTH; |
| 434 | break; |
| 435 | case BT_SECURITY_MEDIUM: |
| 436 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; |
| 437 | break; |
| 438 | case BT_SECURITY_HIGH: |
| 439 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 440 | L2CAP_LM_SECURE; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 441 | break; |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 442 | case BT_SECURITY_FIPS: |
| 443 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | |
| 444 | L2CAP_LM_SECURE | L2CAP_LM_FIPS; |
| 445 | break; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 446 | default: |
| 447 | opt = 0; |
| 448 | break; |
| 449 | } |
| 450 | |
Andrei Emeltchenko | 43bd0f3 | 2011-10-11 14:04:34 +0300 | [diff] [blame] | 451 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 452 | opt |= L2CAP_LM_MASTER; |
| 453 | |
Andrei Emeltchenko | ecf61bd | 2011-10-11 14:04:32 +0300 | [diff] [blame] | 454 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 455 | opt |= L2CAP_LM_RELIABLE; |
| 456 | |
| 457 | if (put_user(opt, (u32 __user *) optval)) |
| 458 | err = -EFAULT; |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 459 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 460 | break; |
| 461 | |
| 462 | case L2CAP_CONNINFO: |
| 463 | if (sk->sk_state != BT_CONNECTED && |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 464 | !(sk->sk_state == BT_CONNECT2 && |
| 465 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 466 | err = -ENOTCONN; |
| 467 | break; |
| 468 | } |
| 469 | |
Filip Palian | 8d03e97 | 2011-05-12 19:32:46 +0200 | [diff] [blame] | 470 | memset(&cinfo, 0, sizeof(cinfo)); |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 471 | cinfo.hci_handle = chan->conn->hcon->handle; |
| 472 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 473 | |
| 474 | len = min_t(unsigned int, len, sizeof(cinfo)); |
| 475 | if (copy_to_user(optval, (char *) &cinfo, len)) |
| 476 | err = -EFAULT; |
| 477 | |
| 478 | break; |
| 479 | |
| 480 | default: |
| 481 | err = -ENOPROTOOPT; |
| 482 | break; |
| 483 | } |
| 484 | |
| 485 | release_sock(sk); |
| 486 | return err; |
| 487 | } |
| 488 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 489 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, |
| 490 | char __user *optval, int __user *optlen) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 491 | { |
| 492 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 493 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 494 | struct bt_security sec; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 495 | struct bt_power pwr; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 496 | int len, err = 0; |
| 497 | |
| 498 | BT_DBG("sk %p", sk); |
| 499 | |
| 500 | if (level == SOL_L2CAP) |
| 501 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); |
| 502 | |
| 503 | if (level != SOL_BLUETOOTH) |
| 504 | return -ENOPROTOOPT; |
| 505 | |
| 506 | if (get_user(len, optlen)) |
| 507 | return -EFAULT; |
| 508 | |
| 509 | lock_sock(sk); |
| 510 | |
| 511 | switch (optname) { |
| 512 | case BT_SECURITY: |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 513 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Johan Hedberg | e0c888a | 2014-01-25 17:10:07 -0500 | [diff] [blame] | 514 | chan->chan_type != L2CAP_CHAN_FIXED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 515 | chan->chan_type != L2CAP_CHAN_RAW) { |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 516 | err = -EINVAL; |
| 517 | break; |
| 518 | } |
| 519 | |
Vinicius Costa Gomes | 8f36011 | 2011-07-08 18:31:46 -0300 | [diff] [blame] | 520 | memset(&sec, 0, sizeof(sec)); |
Andrei Emeltchenko | 85e3436 | 2012-10-05 16:56:54 +0300 | [diff] [blame] | 521 | if (chan->conn) { |
Gustavo Padovan | c6585a4 | 2012-05-07 03:07:26 -0300 | [diff] [blame] | 522 | sec.level = chan->conn->hcon->sec_level; |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 523 | |
Andrei Emeltchenko | 85e3436 | 2012-10-05 16:56:54 +0300 | [diff] [blame] | 524 | if (sk->sk_state == BT_CONNECTED) |
| 525 | sec.key_size = chan->conn->hcon->enc_key_size; |
| 526 | } else { |
| 527 | sec.level = chan->sec_level; |
| 528 | } |
Vinicius Costa Gomes | 8f36011 | 2011-07-08 18:31:46 -0300 | [diff] [blame] | 529 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 530 | len = min_t(unsigned int, len, sizeof(sec)); |
| 531 | if (copy_to_user(optval, (char *) &sec, len)) |
| 532 | err = -EFAULT; |
| 533 | |
| 534 | break; |
| 535 | |
| 536 | case BT_DEFER_SETUP: |
| 537 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
| 538 | err = -EINVAL; |
| 539 | break; |
| 540 | } |
| 541 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 542 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
| 543 | (u32 __user *) optval)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 544 | err = -EFAULT; |
| 545 | |
| 546 | break; |
| 547 | |
| 548 | case BT_FLUSHABLE: |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 549 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 550 | (u32 __user *) optval)) |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 551 | err = -EFAULT; |
| 552 | |
| 553 | break; |
| 554 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 555 | case BT_POWER: |
| 556 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 557 | && sk->sk_type != SOCK_RAW) { |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 558 | err = -EINVAL; |
| 559 | break; |
| 560 | } |
| 561 | |
Andrei Emeltchenko | 15770b1 | 2011-10-11 14:04:33 +0300 | [diff] [blame] | 562 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 563 | |
| 564 | len = min_t(unsigned int, len, sizeof(pwr)); |
| 565 | if (copy_to_user(optval, (char *) &pwr, len)) |
| 566 | err = -EFAULT; |
| 567 | |
| 568 | break; |
| 569 | |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 570 | case BT_CHANNEL_POLICY: |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 571 | if (put_user(chan->chan_policy, (u32 __user *) optval)) |
| 572 | err = -EFAULT; |
| 573 | break; |
| 574 | |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 575 | case BT_SNDMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 576 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 577 | err = -EINVAL; |
| 578 | break; |
| 579 | } |
| 580 | |
| 581 | if (sk->sk_state != BT_CONNECTED) { |
| 582 | err = -ENOTCONN; |
| 583 | break; |
| 584 | } |
| 585 | |
| 586 | if (put_user(chan->omtu, (u16 __user *) optval)) |
| 587 | err = -EFAULT; |
| 588 | break; |
| 589 | |
| 590 | case BT_RCVMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 591 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 592 | err = -EINVAL; |
| 593 | break; |
| 594 | } |
| 595 | |
| 596 | if (put_user(chan->imtu, (u16 __user *) optval)) |
| 597 | err = -EFAULT; |
| 598 | break; |
| 599 | |
Gustavo F. Padovan | 99f4808 | 2011-02-04 02:52:55 -0200 | [diff] [blame] | 600 | default: |
| 601 | err = -ENOPROTOOPT; |
| 602 | break; |
| 603 | } |
| 604 | |
| 605 | release_sock(sk); |
| 606 | return err; |
| 607 | } |
| 608 | |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 609 | static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) |
| 610 | { |
| 611 | switch (chan->scid) { |
Johan Hedberg | 073d1cf | 2013-04-29 19:35:35 +0300 | [diff] [blame] | 612 | case L2CAP_CID_ATT: |
Andre Guedes | 8c3a4f0 | 2012-05-31 17:01:35 -0300 | [diff] [blame] | 613 | if (mtu < L2CAP_LE_MIN_MTU) |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 614 | return false; |
| 615 | break; |
| 616 | |
| 617 | default: |
| 618 | if (mtu < L2CAP_DEFAULT_MIN_MTU) |
| 619 | return false; |
| 620 | } |
| 621 | |
| 622 | return true; |
| 623 | } |
| 624 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 625 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, |
| 626 | char __user *optval, unsigned int optlen) |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 627 | { |
| 628 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 629 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 630 | struct l2cap_options opts; |
| 631 | int len, err = 0; |
| 632 | u32 opt; |
| 633 | |
| 634 | BT_DBG("sk %p", sk); |
| 635 | |
| 636 | lock_sock(sk); |
| 637 | |
| 638 | switch (optname) { |
| 639 | case L2CAP_OPTIONS: |
Johan Hedberg | 64b4f8d | 2013-12-02 16:02:03 +0200 | [diff] [blame] | 640 | if (bdaddr_type_is_le(chan->src_type)) { |
| 641 | err = -EINVAL; |
| 642 | break; |
| 643 | } |
| 644 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 645 | if (sk->sk_state == BT_CONNECTED) { |
| 646 | err = -EINVAL; |
| 647 | break; |
| 648 | } |
| 649 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 650 | opts.imtu = chan->imtu; |
| 651 | opts.omtu = chan->omtu; |
| 652 | opts.flush_to = chan->flush_to; |
| 653 | opts.mode = chan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 654 | opts.fcs = chan->fcs; |
| 655 | opts.max_tx = chan->max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 656 | opts.txwin_size = chan->tx_win; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 657 | |
| 658 | len = min_t(unsigned int, sizeof(opts), optlen); |
| 659 | if (copy_from_user((char *) &opts, optval, len)) { |
| 660 | err = -EFAULT; |
| 661 | break; |
| 662 | } |
| 663 | |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 664 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 665 | err = -EINVAL; |
| 666 | break; |
| 667 | } |
| 668 | |
Andre Guedes | 682877c | 2012-05-31 17:01:34 -0300 | [diff] [blame] | 669 | if (!l2cap_valid_mtu(chan, opts.imtu)) { |
| 670 | err = -EINVAL; |
| 671 | break; |
| 672 | } |
| 673 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 674 | chan->mode = opts.mode; |
| 675 | switch (chan->mode) { |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 676 | case L2CAP_MODE_LE_FLOWCTL: |
| 677 | break; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 678 | case L2CAP_MODE_BASIC: |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 679 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 680 | break; |
| 681 | case L2CAP_MODE_ERTM: |
| 682 | case L2CAP_MODE_STREAMING: |
| 683 | if (!disable_ertm) |
| 684 | break; |
| 685 | /* fall through */ |
| 686 | default: |
| 687 | err = -EINVAL; |
| 688 | break; |
| 689 | } |
| 690 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 691 | chan->imtu = opts.imtu; |
| 692 | chan->omtu = opts.omtu; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 693 | chan->fcs = opts.fcs; |
| 694 | chan->max_tx = opts.max_tx; |
Andrei Emeltchenko | 6327eb9 | 2011-10-11 13:37:42 +0300 | [diff] [blame] | 695 | chan->tx_win = opts.txwin_size; |
Andrei Emeltchenko | 12d5978 | 2012-10-10 17:38:26 +0300 | [diff] [blame] | 696 | chan->flush_to = opts.flush_to; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 697 | break; |
| 698 | |
| 699 | case L2CAP_LM: |
| 700 | if (get_user(opt, (u32 __user *) optval)) { |
| 701 | err = -EFAULT; |
| 702 | break; |
| 703 | } |
| 704 | |
Marcel Holtmann | 7d513e9 | 2014-01-15 22:37:40 -0800 | [diff] [blame] | 705 | if (opt & L2CAP_LM_FIPS) { |
| 706 | err = -EINVAL; |
| 707 | break; |
| 708 | } |
| 709 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 710 | if (opt & L2CAP_LM_AUTH) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 711 | chan->sec_level = BT_SECURITY_LOW; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 712 | if (opt & L2CAP_LM_ENCRYPT) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 713 | chan->sec_level = BT_SECURITY_MEDIUM; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 714 | if (opt & L2CAP_LM_SECURE) |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 715 | chan->sec_level = BT_SECURITY_HIGH; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 716 | |
Andrei Emeltchenko | 43bd0f3 | 2011-10-11 14:04:34 +0300 | [diff] [blame] | 717 | if (opt & L2CAP_LM_MASTER) |
| 718 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); |
| 719 | else |
| 720 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); |
Andrei Emeltchenko | ecf61bd | 2011-10-11 14:04:32 +0300 | [diff] [blame] | 721 | |
| 722 | if (opt & L2CAP_LM_RELIABLE) |
| 723 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); |
| 724 | else |
| 725 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 726 | break; |
| 727 | |
| 728 | default: |
| 729 | err = -ENOPROTOOPT; |
| 730 | break; |
| 731 | } |
| 732 | |
| 733 | release_sock(sk); |
| 734 | return err; |
| 735 | } |
| 736 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 737 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, |
| 738 | char __user *optval, unsigned int optlen) |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 739 | { |
| 740 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 741 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 742 | struct bt_security sec; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 743 | struct bt_power pwr; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 744 | struct l2cap_conn *conn; |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 745 | int len, err = 0; |
| 746 | u32 opt; |
| 747 | |
| 748 | BT_DBG("sk %p", sk); |
| 749 | |
| 750 | if (level == SOL_L2CAP) |
| 751 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); |
| 752 | |
| 753 | if (level != SOL_BLUETOOTH) |
| 754 | return -ENOPROTOOPT; |
| 755 | |
| 756 | lock_sock(sk); |
| 757 | |
| 758 | switch (optname) { |
| 759 | case BT_SECURITY: |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 760 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Johan Hedberg | e0c888a | 2014-01-25 17:10:07 -0500 | [diff] [blame] | 761 | chan->chan_type != L2CAP_CHAN_FIXED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 762 | chan->chan_type != L2CAP_CHAN_RAW) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 763 | err = -EINVAL; |
| 764 | break; |
| 765 | } |
| 766 | |
| 767 | sec.level = BT_SECURITY_LOW; |
| 768 | |
| 769 | len = min_t(unsigned int, sizeof(sec), optlen); |
| 770 | if (copy_from_user((char *) &sec, optval, len)) { |
| 771 | err = -EFAULT; |
| 772 | break; |
| 773 | } |
| 774 | |
| 775 | if (sec.level < BT_SECURITY_LOW || |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 776 | sec.level > BT_SECURITY_HIGH) { |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 777 | err = -EINVAL; |
| 778 | break; |
| 779 | } |
| 780 | |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 781 | chan->sec_level = sec.level; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 782 | |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 783 | if (!chan->conn) |
| 784 | break; |
| 785 | |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 786 | conn = chan->conn; |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 787 | |
| 788 | /*change security for LE channels */ |
Johan Hedberg | 073d1cf | 2013-04-29 19:35:35 +0300 | [diff] [blame] | 789 | if (chan->scid == L2CAP_CID_ATT) { |
Vinicius Costa Gomes | cc11092 | 2012-08-23 21:32:43 -0300 | [diff] [blame] | 790 | if (smp_conn_security(conn->hcon, sec.level)) |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 791 | break; |
Johan Hedberg | d52deb1 | 2014-08-07 22:56:44 +0300 | [diff] [blame] | 792 | set_bit(FLAG_PENDING_SECURITY, &chan->flags); |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 793 | sk->sk_state = BT_CONFIG; |
Gustavo F. Padovan | 3542b854 | 2011-12-28 13:54:17 -0200 | [diff] [blame] | 794 | chan->state = BT_CONFIG; |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 795 | |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 796 | /* or for ACL link */ |
| 797 | } else if ((sk->sk_state == BT_CONNECT2 && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 798 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 799 | sk->sk_state == BT_CONNECTED) { |
Johan Hedberg | e7cafc4 | 2014-07-17 15:35:38 +0300 | [diff] [blame] | 800 | if (!l2cap_chan_check_security(chan, true)) |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 801 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
Gustavo Padovan | a7d7723 | 2012-05-13 03:20:07 -0300 | [diff] [blame] | 802 | else |
| 803 | sk->sk_state_change(sk); |
Gustavo F. Padovan | 0bee1d6 | 2011-11-05 19:58:31 -0200 | [diff] [blame] | 804 | } else { |
| 805 | err = -EINVAL; |
Vinicius Costa Gomes | f1cb9af | 2011-01-26 21:42:57 -0300 | [diff] [blame] | 806 | } |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 807 | break; |
| 808 | |
| 809 | case BT_DEFER_SETUP: |
| 810 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
| 811 | err = -EINVAL; |
| 812 | break; |
| 813 | } |
| 814 | |
| 815 | if (get_user(opt, (u32 __user *) optval)) { |
| 816 | err = -EFAULT; |
| 817 | break; |
| 818 | } |
| 819 | |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 820 | if (opt) { |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 821 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 822 | set_bit(FLAG_DEFER_SETUP, &chan->flags); |
| 823 | } else { |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 824 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
Marcel Holtmann | bdc2578 | 2013-10-14 02:45:34 -0700 | [diff] [blame] | 825 | clear_bit(FLAG_DEFER_SETUP, &chan->flags); |
| 826 | } |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 827 | break; |
| 828 | |
| 829 | case BT_FLUSHABLE: |
| 830 | if (get_user(opt, (u32 __user *) optval)) { |
| 831 | err = -EFAULT; |
| 832 | break; |
| 833 | } |
| 834 | |
| 835 | if (opt > BT_FLUSHABLE_ON) { |
| 836 | err = -EINVAL; |
| 837 | break; |
| 838 | } |
| 839 | |
| 840 | if (opt == BT_FLUSHABLE_OFF) { |
Johannes Berg | c1f23a2 | 2013-10-07 18:19:16 +0200 | [diff] [blame] | 841 | conn = chan->conn; |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 842 | /* proceed further only when we have l2cap_conn and |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 843 | No Flush support in the LM */ |
| 844 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { |
| 845 | err = -EINVAL; |
| 846 | break; |
| 847 | } |
| 848 | } |
| 849 | |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 850 | if (opt) |
| 851 | set_bit(FLAG_FLUSHABLE, &chan->flags); |
| 852 | else |
| 853 | clear_bit(FLAG_FLUSHABLE, &chan->flags); |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 854 | break; |
| 855 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 856 | case BT_POWER: |
| 857 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 858 | chan->chan_type != L2CAP_CHAN_RAW) { |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 859 | err = -EINVAL; |
| 860 | break; |
| 861 | } |
| 862 | |
| 863 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; |
| 864 | |
| 865 | len = min_t(unsigned int, sizeof(pwr), optlen); |
| 866 | if (copy_from_user((char *) &pwr, optval, len)) { |
| 867 | err = -EFAULT; |
| 868 | break; |
| 869 | } |
Andrei Emeltchenko | 15770b1 | 2011-10-11 14:04:33 +0300 | [diff] [blame] | 870 | |
| 871 | if (pwr.force_active) |
| 872 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
| 873 | else |
| 874 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 875 | break; |
| 876 | |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 877 | case BT_CHANNEL_POLICY: |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 878 | if (get_user(opt, (u32 __user *) optval)) { |
| 879 | err = -EFAULT; |
| 880 | break; |
| 881 | } |
| 882 | |
| 883 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { |
| 884 | err = -EINVAL; |
| 885 | break; |
| 886 | } |
| 887 | |
| 888 | if (chan->mode != L2CAP_MODE_ERTM && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 889 | chan->mode != L2CAP_MODE_STREAMING) { |
Mat Martineau | 2ea6648 | 2011-11-02 16:18:30 -0700 | [diff] [blame] | 890 | err = -EOPNOTSUPP; |
| 891 | break; |
| 892 | } |
| 893 | |
| 894 | chan->chan_policy = (u8) opt; |
Mat Martineau | 3f7a56c | 2012-10-23 15:24:23 -0700 | [diff] [blame] | 895 | |
| 896 | if (sk->sk_state == BT_CONNECTED && |
| 897 | chan->move_role == L2CAP_MOVE_ROLE_NONE) |
| 898 | l2cap_move_start(chan); |
| 899 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 900 | break; |
| 901 | |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 902 | case BT_SNDMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 903 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 904 | err = -EINVAL; |
| 905 | break; |
| 906 | } |
| 907 | |
| 908 | /* Setting is not supported as it's the remote side that |
| 909 | * decides this. |
| 910 | */ |
| 911 | err = -EPERM; |
| 912 | break; |
| 913 | |
| 914 | case BT_RCVMTU: |
Johan Hedberg | 1f43542 | 2013-12-02 16:34:18 +0200 | [diff] [blame] | 915 | if (!bdaddr_type_is_le(chan->src_type)) { |
| 916 | err = -EINVAL; |
| 917 | break; |
| 918 | } |
| 919 | |
| 920 | if (sk->sk_state == BT_CONNECTED) { |
| 921 | err = -EISCONN; |
| 922 | break; |
| 923 | } |
| 924 | |
| 925 | if (get_user(opt, (u32 __user *) optval)) { |
| 926 | err = -EFAULT; |
| 927 | break; |
| 928 | } |
| 929 | |
| 930 | chan->imtu = opt; |
| 931 | break; |
| 932 | |
Gustavo F. Padovan | 33575df | 2011-02-04 02:48:48 -0200 | [diff] [blame] | 933 | default: |
| 934 | err = -ENOPROTOOPT; |
| 935 | break; |
| 936 | } |
| 937 | |
| 938 | release_sock(sk); |
| 939 | return err; |
| 940 | } |
| 941 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 942 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
| 943 | struct msghdr *msg, size_t len) |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 944 | { |
| 945 | struct sock *sk = sock->sk; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 946 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 947 | int err; |
| 948 | |
| 949 | BT_DBG("sock %p, sk %p", sock, sk); |
| 950 | |
| 951 | err = sock_error(sk); |
| 952 | if (err) |
| 953 | return err; |
| 954 | |
| 955 | if (msg->msg_flags & MSG_OOB) |
| 956 | return -EOPNOTSUPP; |
| 957 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 958 | if (sk->sk_state != BT_CONNECTED) |
Gustavo F. Padovan | 9a91a04 | 2011-04-28 18:50:17 -0300 | [diff] [blame] | 959 | return -ENOTCONN; |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 960 | |
Johan Hedberg | e793dcf | 2013-09-16 13:05:19 +0300 | [diff] [blame] | 961 | lock_sock(sk); |
| 962 | err = bt_sock_wait_ready(sk, msg->msg_flags); |
| 963 | release_sock(sk); |
| 964 | if (err) |
| 965 | return err; |
| 966 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 967 | l2cap_chan_lock(chan); |
Marcel Holtmann | 8d46321 | 2014-06-05 15:22:51 +0200 | [diff] [blame] | 968 | err = l2cap_chan_send(chan, msg, len); |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 969 | l2cap_chan_unlock(chan); |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 970 | |
Gustavo F. Padovan | fd83ccd | 2011-02-04 03:20:52 -0200 | [diff] [blame] | 971 | return err; |
| 972 | } |
| 973 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 974 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
| 975 | struct msghdr *msg, size_t len, int flags) |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 976 | { |
| 977 | struct sock *sk = sock->sk; |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 978 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
| 979 | int err; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 980 | |
| 981 | lock_sock(sk); |
| 982 | |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 983 | if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, |
| 984 | &bt_sk(sk)->flags)) { |
Johan Hedberg | 3831971 | 2013-05-17 12:49:23 +0300 | [diff] [blame] | 985 | if (bdaddr_type_is_le(pi->chan->src_type)) { |
| 986 | sk->sk_state = BT_CONNECTED; |
| 987 | pi->chan->state = BT_CONNECTED; |
| 988 | __l2cap_le_connect_rsp_defer(pi->chan); |
| 989 | } else { |
| 990 | sk->sk_state = BT_CONFIG; |
| 991 | pi->chan->state = BT_CONFIG; |
| 992 | __l2cap_connect_rsp_defer(pi->chan); |
| 993 | } |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 994 | |
Johan Hedberg | 970871b | 2013-09-25 13:26:05 +0300 | [diff] [blame] | 995 | err = 0; |
| 996 | goto done; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | release_sock(sk); |
| 1000 | |
| 1001 | if (sock->type == SOCK_STREAM) |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1002 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
| 1003 | else |
| 1004 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 1005 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1006 | if (pi->chan->mode != L2CAP_MODE_ERTM) |
| 1007 | return err; |
| 1008 | |
| 1009 | /* Attempt to put pending rx data in the socket buffer */ |
| 1010 | |
| 1011 | lock_sock(sk); |
| 1012 | |
| 1013 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) |
| 1014 | goto done; |
| 1015 | |
| 1016 | if (pi->rx_busy_skb) { |
| 1017 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) |
| 1018 | pi->rx_busy_skb = NULL; |
| 1019 | else |
| 1020 | goto done; |
| 1021 | } |
| 1022 | |
| 1023 | /* Restore data flow when half of the receive buffer is |
| 1024 | * available. This avoids resending large numbers of |
| 1025 | * frames. |
| 1026 | */ |
| 1027 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) |
| 1028 | l2cap_chan_busy(pi->chan, 0); |
| 1029 | |
| 1030 | done: |
| 1031 | release_sock(sk); |
| 1032 | return err; |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 1033 | } |
| 1034 | |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1035 | /* Kill socket (only if zapped and orphan) |
| 1036 | * Must be called on unlocked socket. |
| 1037 | */ |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1038 | static void l2cap_sock_kill(struct sock *sk) |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1039 | { |
| 1040 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) |
| 1041 | return; |
| 1042 | |
Andrei Emeltchenko | e05dcc3 | 2012-02-17 11:40:56 +0200 | [diff] [blame] | 1043 | 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] | 1044 | |
| 1045 | /* Kill poor orphan */ |
Gustavo F. Padovan | 6ff5abb | 2011-04-25 15:10:41 -0300 | [diff] [blame] | 1046 | |
Jaganath Kanakkassery | 4af66c6 | 2012-07-13 18:17:55 +0530 | [diff] [blame] | 1047 | l2cap_chan_put(l2cap_pi(sk)->chan); |
Gustavo F. Padovan | 05fc157 | 2011-02-04 03:26:01 -0200 | [diff] [blame] | 1048 | sock_set_flag(sk, SOCK_DEAD); |
| 1049 | sock_put(sk); |
| 1050 | } |
| 1051 | |
Gustavo Padovan | dc25306 | 2013-10-15 19:24:49 -0300 | [diff] [blame] | 1052 | static int __l2cap_wait_ack(struct sock *sk) |
| 1053 | { |
| 1054 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
| 1055 | DECLARE_WAITQUEUE(wait, current); |
| 1056 | int err = 0; |
| 1057 | int timeo = HZ/5; |
| 1058 | |
| 1059 | add_wait_queue(sk_sleep(sk), &wait); |
| 1060 | set_current_state(TASK_INTERRUPTIBLE); |
| 1061 | while (chan->unacked_frames > 0 && chan->conn) { |
| 1062 | if (!timeo) |
| 1063 | timeo = HZ/5; |
| 1064 | |
| 1065 | if (signal_pending(current)) { |
| 1066 | err = sock_intr_errno(timeo); |
| 1067 | break; |
| 1068 | } |
| 1069 | |
| 1070 | release_sock(sk); |
| 1071 | timeo = schedule_timeout(timeo); |
| 1072 | lock_sock(sk); |
| 1073 | set_current_state(TASK_INTERRUPTIBLE); |
| 1074 | |
| 1075 | err = sock_error(sk); |
| 1076 | if (err) |
| 1077 | break; |
| 1078 | } |
| 1079 | set_current_state(TASK_RUNNING); |
| 1080 | remove_wait_queue(sk_sleep(sk), &wait); |
| 1081 | return err; |
| 1082 | } |
| 1083 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1084 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
| 1085 | { |
| 1086 | struct sock *sk = sock->sk; |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1087 | struct l2cap_chan *chan; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1088 | struct l2cap_conn *conn; |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1089 | int err = 0; |
| 1090 | |
| 1091 | BT_DBG("sock %p, sk %p", sock, sk); |
| 1092 | |
| 1093 | if (!sk) |
| 1094 | return 0; |
| 1095 | |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1096 | chan = l2cap_pi(sk)->chan; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1097 | conn = chan->conn; |
| 1098 | |
| 1099 | if (conn) |
| 1100 | mutex_lock(&conn->chan_lock); |
Andrei Emeltchenko | 7ddb6e0 | 2012-02-14 15:12:57 +0200 | [diff] [blame] | 1101 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1102 | l2cap_chan_lock(chan); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1103 | lock_sock(sk); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1104 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1105 | if (!sk->sk_shutdown) { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1106 | if (chan->mode == L2CAP_MODE_ERTM) |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1107 | err = __l2cap_wait_ack(sk); |
| 1108 | |
| 1109 | sk->sk_shutdown = SHUTDOWN_MASK; |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1110 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1111 | release_sock(sk); |
Gustavo F. Padovan | 0f85272 | 2011-05-04 19:42:50 -0300 | [diff] [blame] | 1112 | l2cap_chan_close(chan, 0); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1113 | lock_sock(sk); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1114 | |
Vladimir Davydov | 093facf | 2014-07-15 12:25:28 +0400 | [diff] [blame] | 1115 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
| 1116 | !(current->flags & PF_EXITING)) |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1117 | err = bt_sock_wait_state(sk, BT_CLOSED, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1118 | sk->sk_lingertime); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1119 | } |
| 1120 | |
| 1121 | if (!err && sk->sk_err) |
| 1122 | err = -sk->sk_err; |
| 1123 | |
| 1124 | release_sock(sk); |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1125 | l2cap_chan_unlock(chan); |
Andrei Emeltchenko | 3df91ea | 2012-02-21 12:54:55 +0200 | [diff] [blame] | 1126 | |
| 1127 | if (conn) |
| 1128 | mutex_unlock(&conn->chan_lock); |
| 1129 | |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 1130 | return err; |
| 1131 | } |
| 1132 | |
Gustavo F. Padovan | 554f05b | 2011-02-04 02:36:42 -0200 | [diff] [blame] | 1133 | static int l2cap_sock_release(struct socket *sock) |
| 1134 | { |
| 1135 | struct sock *sk = sock->sk; |
| 1136 | int err; |
| 1137 | |
| 1138 | BT_DBG("sock %p, sk %p", sock, sk); |
| 1139 | |
| 1140 | if (!sk) |
| 1141 | return 0; |
| 1142 | |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1143 | bt_sock_unlink(&l2cap_sk_list, sk); |
| 1144 | |
Gustavo F. Padovan | 554f05b | 2011-02-04 02:36:42 -0200 | [diff] [blame] | 1145 | err = l2cap_sock_shutdown(sock, 2); |
| 1146 | |
| 1147 | sock_orphan(sk); |
| 1148 | l2cap_sock_kill(sk); |
| 1149 | return err; |
| 1150 | } |
| 1151 | |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1152 | static void l2cap_sock_cleanup_listen(struct sock *parent) |
| 1153 | { |
| 1154 | struct sock *sk; |
| 1155 | |
| 1156 | BT_DBG("parent %p", parent); |
| 1157 | |
| 1158 | /* Close not yet accepted channels */ |
| 1159 | while ((sk = bt_accept_dequeue(parent, NULL))) { |
| 1160 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
| 1161 | |
| 1162 | l2cap_chan_lock(chan); |
| 1163 | __clear_chan_timer(chan); |
| 1164 | l2cap_chan_close(chan, ECONNRESET); |
| 1165 | l2cap_chan_unlock(chan); |
| 1166 | |
| 1167 | l2cap_sock_kill(sk); |
| 1168 | } |
| 1169 | } |
| 1170 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1171 | 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] | 1172 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1173 | struct sock *sk, *parent = chan->data; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1174 | |
Gustavo Padovan | 8ffb929 | 2013-10-21 14:21:41 -0200 | [diff] [blame] | 1175 | lock_sock(parent); |
| 1176 | |
Gustavo Padovan | 5382669 | 2012-05-27 22:27:55 -0300 | [diff] [blame] | 1177 | /* Check for backlog size */ |
| 1178 | if (sk_acceptq_is_full(parent)) { |
| 1179 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
Jukka Taimisto | 8a96f3c | 2014-05-22 10:02:39 +0000 | [diff] [blame] | 1180 | release_sock(parent); |
Gustavo Padovan | 5382669 | 2012-05-27 22:27:55 -0300 | [diff] [blame] | 1181 | return NULL; |
| 1182 | } |
| 1183 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1184 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1185 | GFP_ATOMIC); |
Jukka Taimisto | 8a96f3c | 2014-05-22 10:02:39 +0000 | [diff] [blame] | 1186 | if (!sk) { |
| 1187 | release_sock(parent); |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1188 | return NULL; |
Jukka Taimisto | 8a96f3c | 2014-05-22 10:02:39 +0000 | [diff] [blame] | 1189 | } |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1190 | |
Octavian Purdila | d22015a | 2012-01-22 00:28:34 +0200 | [diff] [blame] | 1191 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
| 1192 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1193 | l2cap_sock_init(sk, parent); |
| 1194 | |
Gustavo Padovan | 644912e | 2012-10-12 19:35:23 +0800 | [diff] [blame] | 1195 | bt_accept_enqueue(parent, sk); |
| 1196 | |
Gustavo Padovan | 8ffb929 | 2013-10-21 14:21:41 -0200 | [diff] [blame] | 1197 | release_sock(parent); |
| 1198 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1199 | return l2cap_pi(sk)->chan; |
| 1200 | } |
| 1201 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1202 | 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] | 1203 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1204 | struct sock *sk = chan->data; |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1205 | int err; |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1206 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1207 | lock_sock(sk); |
| 1208 | |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1209 | if (l2cap_pi(sk)->rx_busy_skb) { |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1210 | err = -ENOMEM; |
| 1211 | goto done; |
| 1212 | } |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1213 | |
| 1214 | err = sock_queue_rcv_skb(sk, skb); |
| 1215 | |
| 1216 | /* For ERTM, handle one skb that doesn't fit into the recv |
| 1217 | * buffer. This is important to do because the data frames |
| 1218 | * have already been acked, so the skb cannot be discarded. |
| 1219 | * |
| 1220 | * Notify the l2cap core that the buffer is full, so the |
| 1221 | * LOCAL_BUSY state is entered and no more frames are |
| 1222 | * acked and reassembled until there is buffer space |
| 1223 | * available. |
| 1224 | */ |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1225 | if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { |
| 1226 | l2cap_pi(sk)->rx_busy_skb = skb; |
| 1227 | l2cap_chan_busy(chan, 1); |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1228 | err = 0; |
| 1229 | } |
| 1230 | |
Andrei Emeltchenko | 6be3655 | 2012-02-22 17:11:56 +0200 | [diff] [blame] | 1231 | done: |
| 1232 | release_sock(sk); |
| 1233 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1234 | return err; |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 1235 | } |
| 1236 | |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1237 | static void l2cap_sock_close_cb(struct l2cap_chan *chan) |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1238 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1239 | struct sock *sk = chan->data; |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 1240 | |
| 1241 | l2cap_sock_kill(sk); |
| 1242 | } |
| 1243 | |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1244 | static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) |
| 1245 | { |
| 1246 | struct sock *sk = chan->data; |
| 1247 | struct sock *parent; |
| 1248 | |
| 1249 | lock_sock(sk); |
| 1250 | |
| 1251 | parent = bt_sk(sk)->parent; |
| 1252 | |
| 1253 | sock_set_flag(sk, SOCK_ZAPPED); |
| 1254 | |
| 1255 | switch (chan->state) { |
| 1256 | case BT_OPEN: |
| 1257 | case BT_BOUND: |
| 1258 | case BT_CLOSED: |
| 1259 | break; |
| 1260 | case BT_LISTEN: |
| 1261 | l2cap_sock_cleanup_listen(sk); |
| 1262 | sk->sk_state = BT_CLOSED; |
| 1263 | chan->state = BT_CLOSED; |
| 1264 | |
| 1265 | break; |
| 1266 | default: |
| 1267 | sk->sk_state = BT_CLOSED; |
| 1268 | chan->state = BT_CLOSED; |
| 1269 | |
| 1270 | sk->sk_err = err; |
| 1271 | |
| 1272 | if (parent) { |
| 1273 | bt_accept_unlink(sk); |
David S. Miller | 676d236 | 2014-04-11 16:15:36 -0400 | [diff] [blame] | 1274 | parent->sk_data_ready(parent); |
Andrei Emeltchenko | c0df7f6 | 2012-05-27 22:27:52 -0300 | [diff] [blame] | 1275 | } else { |
| 1276 | sk->sk_state_change(sk); |
| 1277 | } |
| 1278 | |
| 1279 | break; |
| 1280 | } |
| 1281 | |
| 1282 | release_sock(sk); |
| 1283 | } |
| 1284 | |
Gustavo Padovan | 53f5212 | 2013-10-15 19:24:45 -0300 | [diff] [blame] | 1285 | static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, |
| 1286 | int err) |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1287 | { |
Gustavo Padovan | 80b9802 | 2012-05-27 22:27:51 -0300 | [diff] [blame] | 1288 | struct sock *sk = chan->data; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1289 | |
| 1290 | sk->sk_state = state; |
Gustavo Padovan | 53f5212 | 2013-10-15 19:24:45 -0300 | [diff] [blame] | 1291 | |
| 1292 | if (err) |
| 1293 | sk->sk_err = err; |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 1294 | } |
| 1295 | |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1296 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
Marcel Holtmann | d9fbd02 | 2014-06-08 11:22:28 +0200 | [diff] [blame] | 1297 | unsigned long hdr_len, |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1298 | unsigned long len, int nb) |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1299 | { |
Gustavo Padovan | 0f2c615 | 2013-10-21 14:21:38 -0200 | [diff] [blame] | 1300 | struct sock *sk = chan->data; |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1301 | struct sk_buff *skb; |
| 1302 | int err; |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1303 | |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 1304 | l2cap_chan_unlock(chan); |
Marcel Holtmann | d9fbd02 | 2014-06-08 11:22:28 +0200 | [diff] [blame] | 1305 | skb = bt_skb_send_alloc(sk, hdr_len + len, nb, &err); |
Mat Martineau | a6a5568 | 2012-05-04 14:20:31 -0700 | [diff] [blame] | 1306 | l2cap_chan_lock(chan); |
| 1307 | |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1308 | if (!skb) |
| 1309 | return ERR_PTR(err); |
| 1310 | |
Marcel Holtmann | 8d46321 | 2014-06-05 15:22:51 +0200 | [diff] [blame] | 1311 | skb->priority = sk->sk_priority; |
| 1312 | |
Gustavo Padovan | 0e790c6 | 2013-10-21 18:22:24 -0200 | [diff] [blame] | 1313 | bt_cb(skb)->chan = chan; |
| 1314 | |
Gustavo Padovan | 9033894 | 2012-04-06 20:15:47 -0300 | [diff] [blame] | 1315 | return skb; |
Andrei Emeltchenko | 2f7719c | 2012-01-20 14:08:03 +0200 | [diff] [blame] | 1316 | } |
| 1317 | |
Jukka Rissanen | 0498878 | 2014-06-18 16:37:07 +0300 | [diff] [blame] | 1318 | static int l2cap_sock_memcpy_fromiovec_cb(struct l2cap_chan *chan, |
| 1319 | unsigned char *kdata, |
| 1320 | struct iovec *iov, int len) |
| 1321 | { |
| 1322 | return memcpy_fromiovec(kdata, iov, len); |
| 1323 | } |
| 1324 | |
Andrei Emeltchenko | 54a59aa | 2012-05-27 22:27:53 -0300 | [diff] [blame] | 1325 | static void l2cap_sock_ready_cb(struct l2cap_chan *chan) |
| 1326 | { |
| 1327 | struct sock *sk = chan->data; |
| 1328 | struct sock *parent; |
| 1329 | |
| 1330 | lock_sock(sk); |
| 1331 | |
| 1332 | parent = bt_sk(sk)->parent; |
| 1333 | |
| 1334 | BT_DBG("sk %p, parent %p", sk, parent); |
| 1335 | |
| 1336 | sk->sk_state = BT_CONNECTED; |
| 1337 | sk->sk_state_change(sk); |
| 1338 | |
| 1339 | if (parent) |
David S. Miller | 676d236 | 2014-04-11 16:15:36 -0400 | [diff] [blame] | 1340 | parent->sk_data_ready(parent); |
Andrei Emeltchenko | 54a59aa | 2012-05-27 22:27:53 -0300 | [diff] [blame] | 1341 | |
| 1342 | release_sock(sk); |
| 1343 | } |
| 1344 | |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1345 | static void l2cap_sock_defer_cb(struct l2cap_chan *chan) |
| 1346 | { |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1347 | struct sock *parent, *sk = chan->data; |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1348 | |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1349 | lock_sock(sk); |
| 1350 | |
| 1351 | parent = bt_sk(sk)->parent; |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1352 | if (parent) |
David S. Miller | 676d236 | 2014-04-11 16:15:36 -0400 | [diff] [blame] | 1353 | parent->sk_data_ready(parent); |
Gustavo Padovan | acdcabf | 2013-10-21 14:21:39 -0200 | [diff] [blame] | 1354 | |
| 1355 | release_sock(sk); |
Gustavo Padovan | 2dc4e51 | 2012-10-12 19:35:24 +0800 | [diff] [blame] | 1356 | } |
| 1357 | |
Marcel Holtmann | d97c899 | 2013-10-14 02:53:54 -0700 | [diff] [blame] | 1358 | static void l2cap_sock_resume_cb(struct l2cap_chan *chan) |
| 1359 | { |
| 1360 | struct sock *sk = chan->data; |
| 1361 | |
Johan Hedberg | d52deb1 | 2014-08-07 22:56:44 +0300 | [diff] [blame] | 1362 | if (test_and_clear_bit(FLAG_PENDING_SECURITY, &chan->flags)) { |
| 1363 | sk->sk_state = BT_CONNECTED; |
| 1364 | chan->state = BT_CONNECTED; |
| 1365 | } |
| 1366 | |
Marcel Holtmann | d97c899 | 2013-10-14 02:53:54 -0700 | [diff] [blame] | 1367 | clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
| 1368 | sk->sk_state_change(sk); |
| 1369 | } |
| 1370 | |
Gustavo Padovan | 5ec1bbe | 2013-10-15 19:24:48 -0300 | [diff] [blame] | 1371 | static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) |
| 1372 | { |
| 1373 | struct sock *sk = chan->data; |
| 1374 | |
| 1375 | lock_sock(sk); |
| 1376 | sk->sk_shutdown = SHUTDOWN_MASK; |
| 1377 | release_sock(sk); |
| 1378 | } |
| 1379 | |
Gustavo Padovan | 8d836d7 | 2013-10-15 19:24:47 -0300 | [diff] [blame] | 1380 | static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) |
| 1381 | { |
| 1382 | struct sock *sk = chan->data; |
| 1383 | |
| 1384 | return sk->sk_sndtimeo; |
| 1385 | } |
| 1386 | |
Johan Hedberg | 837776f | 2013-10-15 11:03:18 +0300 | [diff] [blame] | 1387 | static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) |
| 1388 | { |
| 1389 | struct sock *sk = chan->data; |
| 1390 | |
| 1391 | set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); |
| 1392 | sk->sk_state_change(sk); |
| 1393 | } |
| 1394 | |
Marcel Holtmann | 67f86a4 | 2014-06-08 10:05:31 +0200 | [diff] [blame] | 1395 | static const struct l2cap_ops l2cap_chan_ops = { |
Jukka Rissanen | 0498878 | 2014-06-18 16:37:07 +0300 | [diff] [blame] | 1396 | .name = "L2CAP Socket Interface", |
| 1397 | .new_connection = l2cap_sock_new_connection_cb, |
| 1398 | .recv = l2cap_sock_recv_cb, |
| 1399 | .close = l2cap_sock_close_cb, |
| 1400 | .teardown = l2cap_sock_teardown_cb, |
| 1401 | .state_change = l2cap_sock_state_change_cb, |
| 1402 | .ready = l2cap_sock_ready_cb, |
| 1403 | .defer = l2cap_sock_defer_cb, |
| 1404 | .resume = l2cap_sock_resume_cb, |
| 1405 | .suspend = l2cap_sock_suspend_cb, |
| 1406 | .set_shutdown = l2cap_sock_set_shutdown_cb, |
| 1407 | .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, |
| 1408 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
| 1409 | .memcpy_fromiovec = l2cap_sock_memcpy_fromiovec_cb, |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1410 | }; |
| 1411 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1412 | static void l2cap_sock_destruct(struct sock *sk) |
| 1413 | { |
| 1414 | BT_DBG("sk %p", sk); |
| 1415 | |
Sasha Levin | 23d3a86 | 2012-10-08 16:48:32 -0400 | [diff] [blame] | 1416 | if (l2cap_pi(sk)->chan) |
| 1417 | l2cap_chan_put(l2cap_pi(sk)->chan); |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1418 | |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 1419 | if (l2cap_pi(sk)->rx_busy_skb) { |
| 1420 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); |
| 1421 | l2cap_pi(sk)->rx_busy_skb = NULL; |
| 1422 | } |
| 1423 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1424 | skb_queue_purge(&sk->sk_receive_queue); |
| 1425 | skb_queue_purge(&sk->sk_write_queue); |
| 1426 | } |
| 1427 | |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1428 | static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, |
| 1429 | int *msg_namelen) |
| 1430 | { |
Steffen Hurrle | 342dfc3 | 2014-01-17 22:53:15 +0100 | [diff] [blame] | 1431 | DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1432 | |
| 1433 | memset(la, 0, sizeof(struct sockaddr_l2)); |
| 1434 | la->l2_family = AF_BLUETOOTH; |
| 1435 | la->l2_psm = bt_cb(skb)->psm; |
| 1436 | bacpy(&la->l2_bdaddr, &bt_cb(skb)->bdaddr); |
| 1437 | |
| 1438 | *msg_namelen = sizeof(struct sockaddr_l2); |
| 1439 | } |
| 1440 | |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1441 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1442 | { |
Marcel Holtmann | 84b34d9 | 2013-10-13 11:36:07 -0700 | [diff] [blame] | 1443 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1444 | |
| 1445 | BT_DBG("sk %p", sk); |
| 1446 | |
| 1447 | if (parent) { |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 1448 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
| 1449 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1450 | sk->sk_type = parent->sk_type; |
Gustavo Padovan | c5daa68 | 2012-05-16 12:17:10 -0300 | [diff] [blame] | 1451 | bt_sk(sk)->flags = bt_sk(parent)->flags; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1452 | |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1453 | chan->chan_type = pchan->chan_type; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1454 | chan->imtu = pchan->imtu; |
| 1455 | chan->omtu = pchan->omtu; |
Gustavo F. Padovan | b445003 | 2011-04-12 18:15:09 -0300 | [diff] [blame] | 1456 | chan->conf_state = pchan->conf_state; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1457 | chan->mode = pchan->mode; |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 1458 | chan->fcs = pchan->fcs; |
| 1459 | chan->max_tx = pchan->max_tx; |
| 1460 | chan->tx_win = pchan->tx_win; |
Andrei Emeltchenko | 6b3c710 | 2011-11-02 09:57:10 +0200 | [diff] [blame] | 1461 | chan->tx_win_max = pchan->tx_win_max; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 1462 | chan->sec_level = pchan->sec_level; |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame] | 1463 | chan->flags = pchan->flags; |
Johan Hedberg | 0cd75f7 | 2013-05-17 13:09:05 +0300 | [diff] [blame] | 1464 | chan->tx_credits = pchan->tx_credits; |
| 1465 | chan->rx_credits = pchan->rx_credits; |
Paul Moore | 6230c9b | 2011-10-07 09:40:59 +0000 | [diff] [blame] | 1466 | |
Johan Hedberg | 7a8e5a3 | 2014-01-25 17:10:09 -0500 | [diff] [blame] | 1467 | if (chan->chan_type == L2CAP_CHAN_FIXED) { |
| 1468 | chan->scid = pchan->scid; |
| 1469 | chan->dcid = pchan->scid; |
| 1470 | } |
| 1471 | |
Paul Moore | 6230c9b | 2011-10-07 09:40:59 +0000 | [diff] [blame] | 1472 | security_sk_clone(parent, sk); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1473 | } else { |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1474 | switch (sk->sk_type) { |
| 1475 | case SOCK_RAW: |
| 1476 | chan->chan_type = L2CAP_CHAN_RAW; |
| 1477 | break; |
| 1478 | case SOCK_DGRAM: |
| 1479 | chan->chan_type = L2CAP_CHAN_CONN_LESS; |
Marcel Holtmann | 2edf870 | 2013-10-13 12:55:29 -0700 | [diff] [blame] | 1480 | bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 1481 | break; |
| 1482 | case SOCK_SEQPACKET: |
| 1483 | case SOCK_STREAM: |
| 1484 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; |
| 1485 | break; |
| 1486 | } |
| 1487 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1488 | chan->imtu = L2CAP_DEFAULT_MTU; |
| 1489 | chan->omtu = 0; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1490 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1491 | chan->mode = L2CAP_MODE_ERTM; |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 1492 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1493 | } else { |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1494 | chan->mode = L2CAP_MODE_BASIC; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1495 | } |
Andrei Emeltchenko | bd4b165 | 2012-03-28 16:31:25 +0300 | [diff] [blame] | 1496 | |
| 1497 | l2cap_chan_set_defaults(chan); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1498 | } |
| 1499 | |
| 1500 | /* Default config options */ |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 1501 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 1502 | |
| 1503 | chan->data = sk; |
| 1504 | chan->ops = &l2cap_chan_ops; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1505 | } |
| 1506 | |
| 1507 | static struct proto l2cap_proto = { |
| 1508 | .name = "L2CAP", |
| 1509 | .owner = THIS_MODULE, |
| 1510 | .obj_size = sizeof(struct l2cap_pinfo) |
| 1511 | }; |
| 1512 | |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1513 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, |
| 1514 | int proto, gfp_t prio) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1515 | { |
| 1516 | struct sock *sk; |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1517 | struct l2cap_chan *chan; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1518 | |
| 1519 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); |
| 1520 | if (!sk) |
| 1521 | return NULL; |
| 1522 | |
| 1523 | sock_init_data(sock, sk); |
| 1524 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); |
| 1525 | |
| 1526 | sk->sk_destruct = l2cap_sock_destruct; |
Marcel Holtmann | ba13ccd | 2012-03-01 14:25:33 -0800 | [diff] [blame] | 1527 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1528 | |
| 1529 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 1530 | |
| 1531 | sk->sk_protocol = proto; |
| 1532 | sk->sk_state = BT_OPEN; |
| 1533 | |
Gustavo Padovan | eef1d9b | 2012-03-25 13:59:16 -0300 | [diff] [blame] | 1534 | chan = l2cap_chan_create(); |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1535 | if (!chan) { |
Jaganath Kanakkassery | 49dfbb9 | 2012-07-19 12:54:04 +0530 | [diff] [blame] | 1536 | sk_free(sk); |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1537 | return NULL; |
| 1538 | } |
| 1539 | |
Mat Martineau | 61d6ef3 | 2012-04-27 16:50:50 -0700 | [diff] [blame] | 1540 | l2cap_chan_hold(chan); |
| 1541 | |
Gustavo F. Padovan | dc50a06 | 2011-05-16 16:42:01 -0300 | [diff] [blame] | 1542 | l2cap_pi(sk)->chan = chan; |
| 1543 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1544 | return sk; |
| 1545 | } |
| 1546 | |
| 1547 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, |
| 1548 | int kern) |
| 1549 | { |
| 1550 | struct sock *sk; |
| 1551 | |
| 1552 | BT_DBG("sock %p", sock); |
| 1553 | |
| 1554 | sock->state = SS_UNCONNECTED; |
| 1555 | |
| 1556 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1557 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1558 | return -ESOCKTNOSUPPORT; |
| 1559 | |
| 1560 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
| 1561 | return -EPERM; |
| 1562 | |
| 1563 | sock->ops = &l2cap_sock_ops; |
| 1564 | |
| 1565 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
| 1566 | if (!sk) |
| 1567 | return -ENOMEM; |
| 1568 | |
| 1569 | l2cap_sock_init(sk, NULL); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1570 | bt_sock_link(&l2cap_sk_list, sk); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1571 | return 0; |
| 1572 | } |
| 1573 | |
Gustavo F. Padovan | cf2f90f | 2011-04-27 18:40:39 -0300 | [diff] [blame] | 1574 | static const struct proto_ops l2cap_sock_ops = { |
Gustavo F. Padovan | 6539058 | 2011-02-04 02:33:56 -0200 | [diff] [blame] | 1575 | .family = PF_BLUETOOTH, |
| 1576 | .owner = THIS_MODULE, |
| 1577 | .release = l2cap_sock_release, |
| 1578 | .bind = l2cap_sock_bind, |
| 1579 | .connect = l2cap_sock_connect, |
| 1580 | .listen = l2cap_sock_listen, |
| 1581 | .accept = l2cap_sock_accept, |
| 1582 | .getname = l2cap_sock_getname, |
| 1583 | .sendmsg = l2cap_sock_sendmsg, |
| 1584 | .recvmsg = l2cap_sock_recvmsg, |
| 1585 | .poll = bt_sock_poll, |
| 1586 | .ioctl = bt_sock_ioctl, |
| 1587 | .mmap = sock_no_mmap, |
| 1588 | .socketpair = sock_no_socketpair, |
| 1589 | .shutdown = l2cap_sock_shutdown, |
| 1590 | .setsockopt = l2cap_sock_setsockopt, |
| 1591 | .getsockopt = l2cap_sock_getsockopt |
| 1592 | }; |
| 1593 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1594 | static const struct net_proto_family l2cap_sock_family_ops = { |
| 1595 | .family = PF_BLUETOOTH, |
| 1596 | .owner = THIS_MODULE, |
| 1597 | .create = l2cap_sock_create, |
| 1598 | }; |
| 1599 | |
| 1600 | int __init l2cap_init_sockets(void) |
| 1601 | { |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1602 | int err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1603 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1604 | err = proto_register(&l2cap_proto, 0); |
| 1605 | if (err < 0) |
| 1606 | return err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1607 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1608 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1609 | if (err < 0) { |
| 1610 | BT_ERR("L2CAP socket registration failed"); |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1611 | goto error; |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1612 | } |
| 1613 | |
Al Viro | b031661 | 2013-04-04 19:14:33 -0400 | [diff] [blame] | 1614 | err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, |
Gustavo Padovan | 2d79281 | 2012-10-06 10:07:01 +0100 | [diff] [blame] | 1615 | NULL); |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1616 | if (err < 0) { |
| 1617 | BT_ERR("Failed to create L2CAP proc file"); |
| 1618 | bt_sock_unregister(BTPROTO_L2CAP); |
| 1619 | goto error; |
| 1620 | } |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1621 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1622 | BT_INFO("L2CAP socket layer initialized"); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1623 | |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1624 | return 0; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1625 | |
| 1626 | error: |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1627 | proto_unregister(&l2cap_proto); |
| 1628 | return err; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1629 | } |
| 1630 | |
| 1631 | void l2cap_cleanup_sockets(void) |
| 1632 | { |
Masatake YAMATO | 5b28d95 | 2012-07-26 01:29:25 +0900 | [diff] [blame] | 1633 | bt_procfs_cleanup(&init_net, "l2cap"); |
David Herrmann | 5e9d7f8 | 2013-02-24 19:36:51 +0100 | [diff] [blame] | 1634 | bt_sock_unregister(BTPROTO_L2CAP); |
Gustavo F. Padovan | e2174ca | 2011-02-17 19:16:55 -0300 | [diff] [blame] | 1635 | proto_unregister(&l2cap_proto); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 1636 | } |