Release 4.7 net/bluetooth/l2cap_sock.c
/*
BlueZ - Bluetooth protocol stack for Linux
Copyright (C) 2000-2001 Qualcomm Incorporated
Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
Copyright (C) 2010 Google Inc.
Copyright (C) 2011 ProFUSION Embedded Systems
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation;
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
SOFTWARE IS DISCLAIMED.
*/
/* Bluetooth L2CAP sockets. */
#include <linux/module.h>
#include <linux/export.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include "smp.h"
static struct bt_sock_list l2cap_sk_list = {
.lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock)
};
static const struct proto_ops l2cap_sock_ops;
static void l2cap_sock_init(struct sock *sk, struct sock *parent);
static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
int proto, gfp_t prio, int kern);
bool l2cap_is_socket(struct socket *sock)
{
return sock && sock->ops == &l2cap_sock_ops;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
david herrmann | david herrmann | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(l2cap_is_socket);
static int l2cap_validate_bredr_psm(u16 psm)
{
/* PSM must be odd and lsb of upper byte must be 0 */
if ((psm & 0x0101) != 0x0001)
return -EINVAL;
/* Restrict usage of well-known PSMs */
if (psm < L2CAP_PSM_DYN_START && !capable(CAP_NET_BIND_SERVICE))
return -EACCES;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
johan hedberg | johan hedberg | 44 | 100.00% | 2 | 100.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
static int l2cap_validate_le_psm(u16 psm)
{
/* Valid LE_PSM ranges are defined only until 0x00ff */
if (psm > L2CAP_PSM_LE_DYN_END)
return -EINVAL;
/* Restrict fixed, SIG assigned PSM values to CAP_NET_BIND_SERVICE */
if (psm < L2CAP_PSM_LE_DYN_START && !capable(CAP_NET_BIND_SERVICE))
return -EACCES;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
johan hedberg | johan hedberg | 40 | 100.00% | 2 | 100.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct sockaddr_l2 la;
int len, err = 0;
BT_DBG("sk %p", sk);
if (!addr || addr->sa_family != AF_BLUETOOTH)
return -EINVAL;
memset(&la, 0, sizeof(la));
len = min_t(unsigned int, sizeof(la), alen);
memcpy(&la, addr, len);
if (la.l2_cid && la.l2_psm)
return -EINVAL;
if (!bdaddr_type_is_valid(la.l2_bdaddr_type))
return -EINVAL;
if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
/* We only allow ATT user space socket */
if (la.l2_cid &&
la.l2_cid != cpu_to_le16(L2CAP_CID_ATT))
return -EINVAL;
}
lock_sock(sk);
if (sk->sk_state != BT_OPEN) {
err = -EBADFD;
goto done;
}
if (la.l2_psm) {
__u16 psm = __le16_to_cpu(la.l2_psm);
if (la.l2_bdaddr_type == BDADDR_BREDR)
err = l2cap_validate_bredr_psm(psm);
else
err = l2cap_validate_le_psm(psm);
if (err)
goto done;
}
bacpy(&chan->src, &la.l2_bdaddr);
chan->src_type = la.l2_bdaddr_type;
if (la.l2_cid)
err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid));
else
err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm);
if (err < 0)
goto done;
switch (chan->chan_type) {
case L2CAP_CHAN_CONN_LESS:
if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP)
chan->sec_level = BT_SECURITY_SDP;
break;
case L2CAP_CHAN_CONN_ORIENTED:
if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP ||
__le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM)
chan->sec_level = BT_SECURITY_SDP;
break;
case L2CAP_CHAN_RAW:
chan->sec_level = BT_SECURITY_SDP;
break;
case L2CAP_CHAN_FIXED:
/* Fixed channels default to the L2CAP core not holding a
* hci_conn reference for them. For fixed channels mapping to
* L2CAP sockets we do want to hold a reference so set the
* appropriate flag to request it.
*/
set_bit(FLAG_HOLD_HCI_CONN, &chan->flags);
break;
}
if (chan->psm && bdaddr_type_is_le(chan->src_type))
chan->mode = L2CAP_MODE_LE_FLOWCTL;
chan->state = BT_BOUND;
sk->sk_state = BT_BOUND;
done:
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 258 | 60.14% | 4 | 19.05% |
johan hedberg | johan hedberg | 124 | 28.90% | 9 | 42.86% |
marcel holtmann | marcel holtmann | 37 | 8.62% | 4 | 19.05% |
ville tervo | ville tervo | 4 | 0.93% | 1 | 4.76% |
santosh nayak | santosh nayak | 3 | 0.70% | 1 | 4.76% |
andrei emeltchenko | andrei emeltchenko | 2 | 0.47% | 1 | 4.76% |
joe perches | joe perches | 1 | 0.23% | 1 | 4.76% |
| Total | 429 | 100.00% | 21 | 100.00% |
static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
int alen, int flags)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct sockaddr_l2 la;
int len, err = 0;
BT_DBG("sk %p", sk);
if (!addr || alen < sizeof(addr->sa_family) ||
addr->sa_family != AF_BLUETOOTH)
return -EINVAL;
memset(&la, 0, sizeof(la));
len = min_t(unsigned int, sizeof(la), alen);
memcpy(&la, addr, len);
if (la.l2_cid && la.l2_psm)
return -EINVAL;
if (!bdaddr_type_is_valid(la.l2_bdaddr_type))
return -EINVAL;
/* Check that the socket wasn't bound to something that
* conflicts with the address given to connect(). If chan->src
* is BDADDR_ANY it means bind() was never used, in which case
* chan->src_type and la.l2_bdaddr_type do not need to match.
*/
if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) &&
bdaddr_type_is_le(la.l2_bdaddr_type)) {
/* Old user space versions will try to incorrectly bind
* the ATT socket using BDADDR_BREDR. We need to accept
* this and fix up the source address type only when
* both the source CID and destination CID indicate
* ATT. Anything else is an invalid combination.
*/
if (chan->scid != L2CAP_CID_ATT ||
la.l2_cid != cpu_to_le16(L2CAP_CID_ATT))
return -EINVAL;
/* We don't have the hdev available here to make a
* better decision on random vs public, but since all
* user space versions that exhibit this issue anyway do
* not support random local addresses assuming public
* here is good enough.
*/
chan->src_type = BDADDR_LE_PUBLIC;
}
if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR)
return -EINVAL;
if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
/* We only allow ATT user space socket */
if (la.l2_cid &&
la.l2_cid != cpu_to_le16(L2CAP_CID_ATT))
return -EINVAL;
}
if (chan->psm && bdaddr_type_is_le(chan->src_type))
chan->mode = L2CAP_MODE_LE_FLOWCTL;
err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid),
&la.l2_bdaddr, la.l2_bdaddr_type);
if (err)
return err;
lock_sock(sk);
err = bt_sock_wait_state(sk, BT_CONNECTED,
sock_sndtimeo(sk, flags & O_NONBLOCK));
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 176 | 52.23% | 3 | 17.65% |
johan hedberg | johan hedberg | 135 | 40.06% | 7 | 41.18% |
andrei emeltchenko | andrei emeltchenko | 8 | 2.37% | 2 | 11.76% |
ville tervo | ville tervo | 7 | 2.08% | 1 | 5.88% |
andre guedes | andre guedes | 4 | 1.19% | 1 | 5.88% |
santosh nayak | santosh nayak | 3 | 0.89% | 1 | 5.88% |
marcel holtmann | marcel holtmann | 2 | 0.59% | 1 | 5.88% |
joe perches | joe perches | 2 | 0.59% | 1 | 5.88% |
| Total | 337 | 100.00% | 17 | 100.00% |
static int l2cap_sock_listen(struct socket *sock, int backlog)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
int err = 0;
BT_DBG("sk %p backlog %d", sk, backlog);
lock_sock(sk);
if (sk->sk_state != BT_BOUND) {
err = -EBADFD;
goto done;
}
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) {
err = -EINVAL;
goto done;
}
switch (chan->mode) {
case L2CAP_MODE_BASIC:
case L2CAP_MODE_LE_FLOWCTL:
break;
case L2CAP_MODE_ERTM:
case L2CAP_MODE_STREAMING:
if (!disable_ertm)
break;
/* fall through */
default:
err = -EOPNOTSUPP;
goto done;
}
sk->sk_max_ack_backlog = backlog;
sk->sk_ack_backlog = 0;
/* Listening channels need to use nested locking in order not to
* cause lockdep warnings when the created child channels end up
* being locked in the same thread as the parent channel.
*/
atomic_set(&chan->nesting, L2CAP_NESTING_PARENT);
chan->state = BT_LISTEN;
sk->sk_state = BT_LISTEN;
done:
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 140 | 78.65% | 3 | 42.86% |
marcel holtmann | marcel holtmann | 23 | 12.92% | 1 | 14.29% |
johan hedberg | johan hedberg | 15 | 8.43% | 3 | 42.86% |
| Total | 178 | 100.00% | 7 | 100.00% |
static int l2cap_sock_accept(struct socket *sock, struct socket *newsock,
int flags)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
struct sock *sk = sock->sk, *nsk;
long timeo;
int err = 0;
lock_sock_nested(sk, L2CAP_NESTING_PARENT);
timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
BT_DBG("sk %p timeo %ld", sk, timeo);
/* Wait for an incoming connection. (wake-one). */
add_wait_queue_exclusive(sk_sleep(sk), &wait);
while (1) {
if (sk->sk_state != BT_LISTEN) {
err = -EBADFD;
break;
}
nsk = bt_accept_dequeue(sk, newsock);
if (nsk)
break;
if (!timeo) {
err = -EAGAIN;
break;
}
if (signal_pending(current)) {
err = sock_intr_errno(timeo);
break;
}
release_sock(sk);
timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
lock_sock_nested(sk, L2CAP_NESTING_PARENT);
}
remove_wait_queue(sk_sleep(sk), &wait);
if (err)
goto done;
newsock->state = SS_CONNECTED;
BT_DBG("new socket %p", nsk);
done:
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 171 | 79.17% | 1 | 25.00% |
peter hurley | peter hurley | 43 | 19.91% | 2 | 50.00% |
johan hedberg | johan hedberg | 2 | 0.93% | 1 | 25.00% |
| Total | 216 | 100.00% | 4 | 100.00% |
static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr,
int *len, int peer)
{
struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr;
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
BT_DBG("sock %p, sk %p", sock, sk);
if (peer && sk->sk_state != BT_CONNECTED &&
sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2 &&
sk->sk_state != BT_CONFIG)
return -ENOTCONN;
memset(la, 0, sizeof(struct sockaddr_l2));
addr->sa_family = AF_BLUETOOTH;
*len = sizeof(struct sockaddr_l2);
la->l2_psm = chan->psm;
if (peer) {
bacpy(&la->l2_bdaddr, &chan->dst);
la->l2_cid = cpu_to_le16(chan->dcid);
la->l2_bdaddr_type = chan->dst_type;
} else {
bacpy(&la->l2_bdaddr, &chan->src);
la->l2_cid = cpu_to_le16(chan->scid);
la->l2_bdaddr_type = chan->src_type;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 141 | 67.46% | 3 | 30.00% |
johan hedberg | johan hedberg | 37 | 17.70% | 4 | 40.00% |
marcel holtmann | marcel holtmann | 18 | 8.61% | 2 | 20.00% |
mathias krause | mathias krause | 13 | 6.22% | 1 | 10.00% |
| Total | 209 | 100.00% | 10 | 100.00% |
static int l2cap_sock_getsockopt_old(struct socket *sock, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct l2cap_options opts;
struct l2cap_conninfo cinfo;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case L2CAP_OPTIONS:
/* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since
* legacy ATT code depends on getsockopt for
* L2CAP_OPTIONS we need to let this pass.
*/
if (bdaddr_type_is_le(chan->src_type) &&
chan->scid != L2CAP_CID_ATT) {
err = -EINVAL;
break;
}
memset(&opts, 0, sizeof(opts));
opts.imtu = chan->imtu;
opts.omtu = chan->omtu;
opts.flush_to = chan->flush_to;
opts.mode = chan->mode;
opts.fcs = chan->fcs;
opts.max_tx = chan->max_tx;
opts.txwin_size = chan->tx_win;
len = min_t(unsigned int, len, sizeof(opts));
if (copy_to_user(optval, (char *) &opts, len))
err = -EFAULT;
break;
case L2CAP_LM:
switch (chan->sec_level) {
case BT_SECURITY_LOW:
opt = L2CAP_LM_AUTH;
break;
case BT_SECURITY_MEDIUM:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT;
break;
case BT_SECURITY_HIGH:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
L2CAP_LM_SECURE;
break;
case BT_SECURITY_FIPS:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
L2CAP_LM_SECURE | L2CAP_LM_FIPS;
break;
default:
opt = 0;
break;
}
if (test_bit(FLAG_ROLE_SWITCH, &chan->flags))
opt |= L2CAP_LM_MASTER;
if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags))
opt |= L2CAP_LM_RELIABLE;
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
break;
case L2CAP_CONNINFO:
if (sk->sk_state != BT_CONNECTED &&
!(sk->sk_state == BT_CONNECT2 &&
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
err = -ENOTCONN;
break;
}
memset(&cinfo, 0, sizeof(cinfo));
cinfo.hci_handle = chan->conn->hcon->handle;
memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3);
len = min_t(unsigned int, len, sizeof(cinfo));
if (copy_to_user(optval, (char *) &cinfo, len))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 382 | 81.80% | 5 | 41.67% |
johan hedberg | johan hedberg | 24 | 5.14% | 1 | 8.33% |
marcel holtmann | marcel holtmann | 14 | 3.00% | 1 | 8.33% |
andrei emeltchenko | andrei emeltchenko | 14 | 3.00% | 2 | 16.67% |
vasiliy kulikov | vasiliy kulikov | 13 | 2.78% | 1 | 8.33% |
filip palian | filip palian | 13 | 2.78% | 1 | 8.33% |
gustavo padovan | gustavo padovan | 7 | 1.50% | 1 | 8.33% |
| Total | 467 | 100.00% | 12 | 100.00% |
static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct bt_security sec;
struct bt_power pwr;
int len, err = 0;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_FIXED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
memset(&sec, 0, sizeof(sec));
if (chan->conn) {
sec.level = chan->conn->hcon->sec_level;
if (sk->sk_state == BT_CONNECTED)
sec.key_size = chan->conn->hcon->enc_key_size;
} else {
sec.level = chan->sec_level;
}
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))
err = -EFAULT;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
(u32 __user *) optval))
err = -EFAULT;
break;
case BT_FLUSHABLE:
if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags),
(u32 __user *) optval))
err = -EFAULT;
break;
case BT_POWER:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags);
len = min_t(unsigned int, len, sizeof(pwr));
if (copy_to_user(optval, (char *) &pwr, len))
err = -EFAULT;
break;
case BT_CHANNEL_POLICY:
if (put_user(chan->chan_policy, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_SNDMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (sk->sk_state != BT_CONNECTED) {
err = -ENOTCONN;
break;
}
if (put_user(chan->omtu, (u16 __user *) optval))
err = -EFAULT;
break;
case BT_RCVMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (put_user(chan->imtu, (u16 __user *) optval))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 264 | 47.40% | 3 | 23.08% |
johan hedberg | johan hedberg | 108 | 19.39% | 2 | 15.38% |
jaikumar ganesh | jaikumar ganesh | 75 | 13.46% | 1 | 7.69% |
vinicius costa gomes | vinicius costa gomes | 33 | 5.92% | 1 | 7.69% |
andrei emeltchenko | andrei emeltchenko | 27 | 4.85% | 3 | 23.08% |
mat martineau | mat martineau | 25 | 4.49% | 1 | 7.69% |
gustavo padovan | gustavo padovan | 25 | 4.49% | 2 | 15.38% |
| Total | 557 | 100.00% | 13 | 100.00% |
static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu)
{
switch (chan->scid) {
case L2CAP_CID_ATT:
if (mtu < L2CAP_LE_MIN_MTU)
return false;
break;
default:
if (mtu < L2CAP_DEFAULT_MIN_MTU)
return false;
}
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andre guedes | andre guedes | 47 | 97.92% | 2 | 66.67% |
johan hedberg | johan hedberg | 1 | 2.08% | 1 | 33.33% |
| Total | 48 | 100.00% | 3 | 100.00% |
static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct l2cap_options opts;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
lock_sock(sk);
switch (optname) {
case L2CAP_OPTIONS:
if (bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (sk->sk_state == BT_CONNECTED) {
err = -EINVAL;
break;
}
opts.imtu = chan->imtu;
opts.omtu = chan->omtu;
opts.flush_to = chan->flush_to;
opts.mode = chan->mode;
opts.fcs = chan->fcs;
opts.max_tx = chan->max_tx;
opts.txwin_size = chan->tx_win;
len = min_t(unsigned int, sizeof(opts), optlen);
if (copy_from_user((char *) &opts, optval, len)) {
err = -EFAULT;
break;
}
if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) {
err = -EINVAL;
break;
}
if (!l2cap_valid_mtu(chan, opts.imtu)) {
err = -EINVAL;
break;
}
chan->mode = opts.mode;
switch (chan->mode) {
case L2CAP_MODE_LE_FLOWCTL:
break;
case L2CAP_MODE_BASIC:
clear_bit(CONF_STATE2_DEVICE, &chan->conf_state);
break;
case L2CAP_MODE_ERTM:
case L2CAP_MODE_STREAMING:
if (!disable_ertm)
break;
/* fall through */
default:
err = -EINVAL;
break;
}
chan->imtu = opts.imtu;
chan->omtu = opts.omtu;
chan->fcs = opts.fcs;
chan->max_tx = opts.max_tx;
chan->tx_win = opts.txwin_size;
chan->flush_to = opts.flush_to;
break;
case L2CAP_LM:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt & L2CAP_LM_FIPS) {
err = -EINVAL;
break;
}
if (opt & L2CAP_LM_AUTH)
chan->sec_level = BT_SECURITY_LOW;
if (opt & L2CAP_LM_ENCRYPT)
chan->sec_level = BT_SECURITY_MEDIUM;
if (opt & L2CAP_LM_SECURE)
chan->sec_level = BT_SECURITY_HIGH;
if (opt & L2CAP_LM_MASTER)
set_bit(FLAG_ROLE_SWITCH, &chan->flags);
else
clear_bit(FLAG_ROLE_SWITCH, &chan->flags);
if (opt & L2CAP_LM_RELIABLE)
set_bit(FLAG_FORCE_RELIABLE, &chan->flags);
else
clear_bit(FLAG_FORCE_RELIABLE, &chan->flags);
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 380 | 78.03% | 6 | 42.86% |
andrei emeltchenko | andrei emeltchenko | 52 | 10.68% | 4 | 28.57% |
johan hedberg | johan hedberg | 21 | 4.31% | 2 | 14.29% |
andre guedes | andre guedes | 20 | 4.11% | 1 | 7.14% |
marcel holtmann | marcel holtmann | 14 | 2.87% | 1 | 7.14% |
| Total | 487 | 100.00% | 14 | 100.00% |
static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct bt_security sec;
struct bt_power pwr;
struct l2cap_conn *conn;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_FIXED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
sec.level = BT_SECURITY_LOW;
len = min_t(unsigned int, sizeof(sec), optlen);
if (copy_from_user((char *) &sec, optval, len)) {
err = -EFAULT;
break;
}
if (sec.level < BT_SECURITY_LOW ||
sec.level > BT_SECURITY_FIPS) {
err = -EINVAL;
break;
}
chan->sec_level = sec.level;
if (!chan->conn)
break;
conn = chan->conn;
/*change security for LE channels */
if (chan->scid == L2CAP_CID_ATT) {
if (smp_conn_security(conn->hcon, sec.level))
break;
set_bit(FLAG_PENDING_SECURITY, &chan->flags);
sk->sk_state = BT_CONFIG;
chan->state = BT_CONFIG;
/* or for ACL link */
} else if ((sk->sk_state == BT_CONNECT2 &&
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) ||
sk->sk_state == BT_CONNECTED) {
if (!l2cap_chan_check_security(chan, true))
set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
else
sk->sk_state_change(sk);
} else {
err = -EINVAL;
}
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt) {
set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
set_bit(FLAG_DEFER_SETUP, &chan->flags);
} else {
clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
clear_bit(FLAG_DEFER_SETUP, &chan->flags);
}
break;
case BT_FLUSHABLE:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt > BT_FLUSHABLE_ON) {
err = -EINVAL;
break;
}
if (opt == BT_FLUSHABLE_OFF) {
conn = chan->conn;
/* proceed further only when we have l2cap_conn and
No Flush support in the LM */
if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) {
err = -EINVAL;
break;
}
}
if (opt)
set_bit(FLAG_FLUSHABLE, &chan->flags);
else
clear_bit(FLAG_FLUSHABLE, &chan->flags);
break;
case BT_POWER:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = BT_POWER_FORCE_ACTIVE_ON;
len = min_t(unsigned int, sizeof(pwr), optlen);
if (copy_from_user((char *) &pwr, optval, len)) {
err = -EFAULT;
break;
}
if (pwr.force_active)
set_bit(FLAG_FORCE_ACTIVE, &chan->flags);
else
clear_bit(FLAG_FORCE_ACTIVE, &chan->flags);
break;
case BT_CHANNEL_POLICY:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) {
err = -EINVAL;
break;
}
if (chan->mode != L2CAP_MODE_ERTM &&
chan->mode != L2CAP_MODE_STREAMING) {
err = -EOPNOTSUPP;
break;
}
chan->chan_policy = (u8) opt;
if (sk->sk_state == BT_CONNECTED &&
chan->move_role == L2CAP_MOVE_ROLE_NONE)
l2cap_move_start(chan);
break;
case BT_SNDMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
/* Setting is not supported as it's the remote side that
* decides this.
*/
err = -EPERM;
break;
case BT_RCVMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (sk->sk_state == BT_CONNECTED) {
err = -EISCONN;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
chan->imtu = opt;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 395 | 46.42% | 6 | 25.00% |
johan hedberg | johan hedberg | 113 | 13.28% | 5 | 20.83% |
mat martineau | mat martineau | 88 | 10.34% | 2 | 8.33% |
jaikumar ganesh | jaikumar ganesh | 77 | 9.05% | 1 | 4.17% |
gustavo padovan | gustavo padovan | 65 | 7.64% | 2 | 8.33% |
andrei emeltchenko | andrei emeltchenko | 45 | 5.29% | 2 | 8.33% |
vinicius costa gomes | vinicius costa gomes | 40 | 4.70% | 2 | 8.33% |
marcel holtmann | marcel holtmann | 24 | 2.82% | 1 | 4.17% |
johannes berg | johannes berg | 2 | 0.24% | 1 | 4.17% |
patrik flykt | patrik flykt | 1 | 0.12% | 1 | 4.17% |
lucas de marchi | lucas de marchi | 1 | 0.12% | 1 | 4.17% |
| Total | 851 | 100.00% | 24 | 100.00% |
static int l2cap_sock_sendmsg(struct socket *sock, struct msghdr *msg,
size_t len)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
int err;
BT_DBG("sock %p, sk %p", sock, sk);
err = sock_error(sk);
if (err)
return err;
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
if (sk->sk_state != BT_CONNECTED)
return -ENOTCONN;
lock_sock(sk);
err = bt_sock_wait_ready(sk, msg->msg_flags);
release_sock(sk);
if (err)
return err;
l2cap_chan_lock(chan);
err = l2cap_chan_send(chan, msg, len);
l2cap_chan_unlock(chan);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 107 | 75.35% | 4 | 66.67% |
johan hedberg | johan hedberg | 28 | 19.72% | 1 | 16.67% |
mat martineau | mat martineau | 7 | 4.93% | 1 | 16.67% |
| Total | 142 | 100.00% | 6 | 100.00% |
static int l2cap_sock_recvmsg(struct socket *sock, struct msghdr *msg,
size_t len, int flags)
{
struct sock *sk = sock->sk;
struct l2cap_pinfo *pi = l2cap_pi(sk);
int err;
lock_sock(sk);
if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP,
&bt_sk(sk)->flags)) {
if (bdaddr_type_is_le(pi->chan->src_type)) {
sk->sk_state = BT_CONNECTED;
pi->chan->state = BT_CONNECTED;
__l2cap_le_connect_rsp_defer(pi->chan);
} else {
sk->sk_state = BT_CONFIG;
pi->chan->state = BT_CONFIG;
__l2cap_connect_rsp_defer(pi->chan);
}
err = 0;
goto done;
}
release_sock(sk);
if (sock->type == SOCK_STREAM)
err = bt_sock_stream_recvmsg(sock, msg, len, flags);
else
err = bt_sock_recvmsg(sock, msg, len, flags);
if (pi->chan->mode != L2CAP_MODE_ERTM)
return err;
/* Attempt to put pending rx data in the socket buffer */
lock_sock(sk);
if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state))
goto done;
if (pi->rx_busy_skb) {
if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb))
pi->rx_busy_skb = NULL;
else
goto done;
}
/* Restore data flow when half of the receive buffer is
* available. This avoids resending large numbers of
* frames.
*/
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1)
l2cap_chan_busy(pi->chan, 0);
done:
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
mat martineau | mat martineau | 123 | 43.93% | 1 | 12.50% |
gustavo f. padovan | gustavo f. padovan | 107 | 38.21% | 4 | 50.00% |
johan hedberg | johan hedberg | 43 | 15.36% | 2 | 25.00% |
gustavo padovan | gustavo padovan | 7 | 2.50% | 1 | 12.50% |
| Total | 280 | 100.00% | 8 | 100.00% |
/* Kill socket (only if zapped and orphan)
* Must be called on unlocked socket.
*/
static void l2cap_sock_kill(struct sock *sk)
{
if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
return;
BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state));
/* Kill poor orphan */
l2cap_chan_put(l2cap_pi(sk)->chan);
sock_set_flag(sk, SOCK_DEAD);
sock_put(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 58 | 92.06% | 3 | 60.00% |
andrei emeltchenko | andrei emeltchenko | 4 | 6.35% | 1 | 20.00% |
jaganath kanakkassery | jaganath kanakkassery | 1 | 1.59% | 1 | 20.00% |
| Total | 63 | 100.00% | 5 | 100.00% |
static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan)
{
DECLARE_WAITQUEUE(wait, current);
int err = 0;
int timeo = L2CAP_WAIT_ACK_POLL_PERIOD;
/* Timeout to prevent infinite loop */
unsigned long timeout = jiffies + L2CAP_WAIT_ACK_TIMEOUT;
add_wait_queue(sk_sleep(sk), &wait);
set_current_state(TASK_INTERRUPTIBLE);
do {
BT_DBG("Waiting for %d ACKs, timeout %04d ms",
chan->unacked_frames, time_after(jiffies, timeout) ? 0 :
jiffies_to_msecs(timeout - jiffies));
if (!timeo)
timeo = L2CAP_WAIT_ACK_POLL_PERIOD;
if (signal_pending(current)) {
err = sock_intr_errno(timeo);
break;
}
release_sock(sk);
timeo = schedule_timeout(timeo);
lock_sock(sk);
set_current_state(TASK_INTERRUPTIBLE);
err = sock_error(sk);
if (err)
break;
if (time_after(jiffies, timeout)) {
err = -ENOLINK;
break;
}
} while (chan->unacked_frames > 0 &&
chan->state == BT_CONNECTED);
set_current_state(TASK_RUNNING);
remove_wait_queue(sk_sleep(sk), &wait);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo padovan | gustavo padovan | 125 | 63.45% | 1 | 20.00% |
dean jenkins | dean jenkins | 72 | 36.55% | 4 | 80.00% |
| Total | 197 | 100.00% | 5 | 100.00% |
static int l2cap_sock_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan;
struct l2cap_conn *conn;
int err = 0;
BT_DBG("sock %p, sk %p", sock, sk);
if (!sk)
return 0;
lock_sock(sk);
if (sk->sk_shutdown)
goto shutdown_already;
BT_DBG("Handling sock shutdown");
/* prevent sk structure from being freed whilst unlocked */
sock_hold(sk);
chan = l2cap_pi(sk)->chan;
/* prevent chan structure from being freed whilst unlocked */
l2cap_chan_hold(chan);
BT_DBG("chan %p state %s", chan, state_to_string(chan->state));
if (chan->mode == L2CAP_MODE_ERTM &&
chan->unacked_frames > 0 &&
chan->state == BT_CONNECTED) {
err = __l2cap_wait_ack(sk, chan);
/* After waiting for ACKs, check whether shutdown
* has already been actioned to close the L2CAP
* link such as by l2cap_disconnection_req().
*/
if (sk->sk_shutdown)
goto has_shutdown;
}
sk->sk_shutdown = SHUTDOWN_MASK;
release_sock(sk);
l2cap_chan_lock(chan);
conn = chan->conn;
if (conn)
/* prevent conn structure from being freed */
l2cap_conn_get(conn);
l2cap_chan_unlock(chan);
if (conn)
/* mutex lock must be taken before l2cap_chan_lock() */
mutex_lock(&conn->chan_lock);
l2cap_chan_lock(chan);
l2cap_chan_close(chan, 0);
l2cap_chan_unlock(chan);
if (conn) {
mutex_unlock(&conn->chan_lock);
l2cap_conn_put(conn);
}
lock_sock(sk);
if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
!(current->flags & PF_EXITING))
err = bt_sock_wait_state(sk, BT_CLOSED,
sk->sk_lingertime);
has_shutdown:
l2cap_chan_put(chan);
sock_put(sk);
shutdown_already:
if (!err && sk->sk_err)
err = -sk->sk_err;
release_sock(sk);
BT_DBG("Sock shutdown complete err: %d", err);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
dean jenkins | dean jenkins | 146 | 45.48% | 6 | 40.00% |
gustavo f. padovan | gustavo f. padovan | 126 | 39.25% | 4 | 26.67% |
andrei emeltchenko | andrei emeltchenko | 26 | 8.10% | 3 | 20.00% |
johan hedberg | johan hedberg | 14 | 4.36% | 1 | 6.67% |
vladimir davydov | vladimir davydov | 9 | 2.80% | 1 | 6.67% |
| Total | 321 | 100.00% | 15 | 100.00% |
static int l2cap_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
int err;
BT_DBG("sock %p, sk %p", sock, sk);
if (!sk)
return 0;
bt_sock_unlink(&l2cap_sk_list, sk);
err = l2cap_sock_shutdown(sock, 2);
sock_orphan(sk);
l2cap_sock_kill(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 62 | 88.57% | 1 | 50.00% |
masatake yamato | masatake yamato | 8 | 11.43% | 1 | 50.00% |
| Total | 70 | 100.00% | 2 | 100.00% |
static void l2cap_sock_cleanup_listen(struct sock *parent)
{
struct sock *sk;
BT_DBG("parent %p state %s", parent,
state_to_string(parent->sk_state));
/* Close not yet accepted channels */
while ((sk = bt_accept_dequeue(parent, NULL))) {
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
BT_DBG("child chan %p state %s", chan,
state_to_string(chan->state));
l2cap_chan_lock(chan);
__clear_chan_timer(chan);
l2cap_chan_close(chan, ECONNRESET);
l2cap_chan_unlock(chan);
l2cap_sock_kill(sk);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andrei emeltchenko | andrei emeltchenko | 77 | 77.78% | 1 | 50.00% |
johan hedberg | johan hedberg | 22 | 22.22% | 1 | 50.00% |
| Total | 99 | 100.00% | 2 | 100.00% |
static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan)
{
struct sock *sk, *parent = chan->data;
lock_sock(parent);
/* Check for backlog size */
if (sk_acceptq_is_full(parent)) {
BT_DBG("backlog full %d", parent->sk_ack_backlog);
release_sock(parent);
return NULL;
}
sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP,
GFP_ATOMIC, 0);
if (!sk) {
release_sock(parent);
return NULL;
}
bt_sock_reclassify_lock(sk, BTPROTO_L2CAP);
l2cap_sock_init(sk, parent);
bt_accept_enqueue(parent, sk);
release_sock(parent);
return l2cap_pi(sk)->chan;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 59 | 47.58% | 1 | 12.50% |
gustavo padovan | gustavo padovan | 44 | 35.48% | 4 | 50.00% |
jukka taimisto | jukka taimisto | 12 | 9.68% | 1 | 12.50% |
octavian purdila | octavian purdila | 7 | 5.65% | 1 | 12.50% |
eric w. biederman | eric w. biederman | 2 | 1.61% | 1 | 12.50% |
| Total | 124 | 100.00% | 8 | 100.00% |
static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
{
struct sock *sk = chan->data;
int err;
lock_sock(sk);
if (l2cap_pi(sk)->rx_busy_skb) {
err = -ENOMEM;
goto done;
}
err = sock_queue_rcv_skb(sk, skb);
/* For ERTM, handle one skb that doesn't fit into the recv
* buffer. This is important to do because the data frames
* have already been acked, so the skb cannot be discarded.
*
* Notify the l2cap core that the buffer is full, so the
* LOCAL_BUSY state is entered and no more frames are
* acked and reassembled until there is buffer space
* available.
*/
if (err < 0 && chan->mode == L2CAP_MODE_ERTM) {
l2cap_pi(sk)->rx_busy_skb = skb;
l2cap_chan_busy(chan, 1);
err = 0;
}
done:
release_sock(sk);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
mat martineau | mat martineau | 44 | 41.51% | 1 | 20.00% |
gustavo f. padovan | gustavo f. padovan | 27 | 25.47% | 1 | 20.00% |
andrei emeltchenko | andrei emeltchenko | 20 | 18.87% | 1 | 20.00% |
marcel holtmann | marcel holtmann | 10 | 9.43% | 1 | 20.00% |
gustavo padovan | gustavo padovan | 5 | 4.72% | 1 | 20.00% |
| Total | 106 | 100.00% | 5 | 100.00% |
static void l2cap_sock_close_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
l2cap_sock_kill(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 20 | 80.00% | 1 | 50.00% |
gustavo padovan | gustavo padovan | 5 | 20.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err)
{
struct sock *sk = chan->data;
struct sock *parent;
BT_DBG("chan %p state %s", chan, state_to_string(chan->state));
/* This callback can be called both for server (BT_LISTEN)
* sockets as well as "normal" ones. To avoid lockdep warnings
* with child socket locking (through l2cap_sock_cleanup_listen)
* we need separation into separate nesting levels. The simplest
* way to accomplish this is to inherit the nesting level used
* for the channel.
*/
lock_sock_nested(sk, atomic_read(&chan->nesting));
parent = bt_sk(sk)->parent;
sock_set_flag(sk, SOCK_ZAPPED);
switch (chan->state) {
case BT_OPEN:
case BT_BOUND:
case BT_CLOSED:
break;
case BT_LISTEN:
l2cap_sock_cleanup_listen(sk);
sk->sk_state = BT_CLOSED;
chan->state = BT_CLOSED;
break;
default:
sk->sk_state = BT_CLOSED;
chan->state = BT_CLOSED;
sk->sk_err = err;
if (parent) {
bt_accept_unlink(sk);
parent->sk_data_ready(parent);
} else {
sk->sk_state_change(sk);
}
break;
}
release_sock(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andrei emeltchenko | andrei emeltchenko | 140 | 85.37% | 1 | 25.00% |
johan hedberg | johan hedberg | 24 | 14.63% | 3 | 75.00% |
| Total | 164 | 100.00% | 4 | 100.00% |
static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state,
int err)
{
struct sock *sk = chan->data;
sk->sk_state = state;
if (err)
sk->sk_err = err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 24 | 57.14% | 1 | 33.33% |
gustavo padovan | gustavo padovan | 18 | 42.86% | 2 | 66.67% |
| Total | 42 | 100.00% | 3 | 100.00% |
static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan,
unsigned long hdr_len,
unsigned long len, int nb)
{
struct sock *sk = chan->data;
struct sk_buff *skb;
int err;
l2cap_chan_unlock(chan);
skb = bt_skb_send_alloc(sk, hdr_len + len, nb, &err);
l2cap_chan_lock(chan);
if (!skb)
return ERR_PTR(err);
skb->priority = sk->sk_priority;
bt_cb(skb)->l2cap.chan = chan;
return skb;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo padovan | gustavo padovan | 40 | 40.00% | 3 | 37.50% |
andrei emeltchenko | andrei emeltchenko | 34 | 34.00% | 1 | 12.50% |
marcel holtmann | marcel holtmann | 14 | 14.00% | 2 | 25.00% |
mat martineau | mat martineau | 10 | 10.00% | 1 | 12.50% |
johan hedberg | johan hedberg | 2 | 2.00% | 1 | 12.50% |
| Total | 100 | 100.00% | 8 | 100.00% |
static void l2cap_sock_ready_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
struct sock *parent;
lock_sock(sk);
parent = bt_sk(sk)->parent;
BT_DBG("sk %p, parent %p", sk, parent);
sk->sk_state = BT_CONNECTED;
sk->sk_state_change(sk);
if (parent)
parent->sk_data_ready(parent);
release_sock(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andrei emeltchenko | andrei emeltchenko | 77 | 100.00% | 1 | 100.00% |
| Total | 77 | 100.00% | 1 | 100.00% |
static void l2cap_sock_defer_cb(struct l2cap_chan *chan)
{
struct sock *parent, *sk = chan->data;
lock_sock(sk);
parent = bt_sk(sk)->parent;
if (parent)
parent->sk_data_ready(parent);
release_sock(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo padovan | gustavo padovan | 53 | 100.00% | 2 | 100.00% |
| Total | 53 | 100.00% | 2 | 100.00% |
static void l2cap_sock_resume_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
if (test_and_clear_bit(FLAG_PENDING_SECURITY, &chan->flags)) {
sk->sk_state = BT_CONNECTED;
chan->state = BT_CONNECTED;
}
clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
sk->sk_state_change(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
marcel holtmann | marcel holtmann | 40 | 60.61% | 1 | 50.00% |
johan hedberg | johan hedberg | 26 | 39.39% | 1 | 50.00% |
| Total | 66 | 100.00% | 2 | 100.00% |
static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
lock_sock(sk);
sk->sk_shutdown = SHUTDOWN_MASK;
release_sock(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo padovan | gustavo padovan | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
return sk->sk_sndtimeo;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo padovan | gustavo padovan | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
static void l2cap_sock_suspend_cb(struct l2cap_chan *chan)
{
struct sock *sk = chan->data;
set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
sk->sk_state_change(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
johan hedberg | johan hedberg | 40 | 100.00% | 1 | 100.00% |
| Total | 40 | 100.00% | 1 | 100.00% |
static const struct l2cap_ops l2cap_chan_ops = {
.name = "L2CAP Socket Interface",
.new_connection = l2cap_sock_new_connection_cb,
.recv = l2cap_sock_recv_cb,
.close = l2cap_sock_close_cb,
.teardown = l2cap_sock_teardown_cb,
.state_change = l2cap_sock_state_change_cb,
.ready = l2cap_sock_ready_cb,
.defer = l2cap_sock_defer_cb,
.resume = l2cap_sock_resume_cb,
.suspend = l2cap_sock_suspend_cb,
.set_shutdown = l2cap_sock_set_shutdown_cb,
.get_sndtimeo = l2cap_sock_get_sndtimeo_cb,
.alloc_skb = l2cap_sock_alloc_skb_cb,
};
static void l2cap_sock_destruct(struct sock *sk)
{
BT_DBG("sk %p", sk);
if (l2cap_pi(sk)->chan)
l2cap_chan_put(l2cap_pi(sk)->chan);
if (l2cap_pi(sk)->rx_busy_skb) {
kfree_skb(l2cap_pi(sk)->rx_busy_skb);
l2cap_pi(sk)->rx_busy_skb = NULL;
}
skb_queue_purge(&sk->sk_receive_queue);
skb_queue_purge(&sk->sk_write_queue);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
mat martineau | mat martineau | 40 | 48.19% | 2 | 50.00% |
gustavo f. padovan | gustavo f. padovan | 34 | 40.96% | 1 | 25.00% |
sasha levin | sasha levin | 9 | 10.84% | 1 | 25.00% |
| Total | 83 | 100.00% | 4 | 100.00% |
static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name,
int *msg_namelen)
{
DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name);
memset(la, 0, sizeof(struct sockaddr_l2));
la->l2_family = AF_BLUETOOTH;
la->l2_psm = bt_cb(skb)->l2cap.psm;
bacpy(&la->l2_bdaddr, &bt_cb(skb)->l2cap.bdaddr);
*msg_namelen = sizeof(struct sockaddr_l2);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
marcel holtmann | marcel holtmann | 78 | 87.64% | 1 | 33.33% |
steffen hurrle | steffen hurrle | 7 | 7.87% | 1 | 33.33% |
johan hedberg | johan hedberg | 4 | 4.49% | 1 | 33.33% |
| Total | 89 | 100.00% | 3 | 100.00% |
static void l2cap_sock_init(struct sock *sk, struct sock *parent)
{
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
BT_DBG("sk %p", sk);
if (parent) {
struct l2cap_chan *pchan = l2cap_pi(parent)->chan;
sk->sk_type = parent->sk_type;
bt_sk(sk)->flags = bt_sk(parent)->flags;
chan->chan_type = pchan->chan_type;
chan->imtu = pchan->imtu;
chan->omtu = pchan->omtu;
chan->conf_state = pchan->conf_state;
chan->mode = pchan->mode;
chan->fcs = pchan->fcs;
chan->max_tx = pchan->max_tx;
chan->tx_win = pchan->tx_win;
chan->tx_win_max = pchan->tx_win_max;
chan->sec_level = pchan->sec_level;
chan->flags = pchan->flags;
chan->tx_credits = pchan->tx_credits;
chan->rx_credits = pchan->rx_credits;
if (chan->chan_type == L2CAP_CHAN_FIXED) {
chan->scid = pchan->scid;
chan->dcid = pchan->scid;
}
security_sk_clone(parent, sk);
} else {
switch (sk->sk_type) {
case SOCK_RAW:
chan->chan_type = L2CAP_CHAN_RAW;
break;
case SOCK_DGRAM:
chan->chan_type = L2CAP_CHAN_CONN_LESS;
bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name;
break;
case SOCK_SEQPACKET:
case SOCK_STREAM:
chan->chan_type = L2CAP_CHAN_CONN_ORIENTED;
break;
}
chan->imtu = L2CAP_DEFAULT_MTU;
chan->omtu = 0;
if (!disable_ertm && sk->sk_type == SOCK_STREAM) {
chan->mode = L2CAP_MODE_ERTM;
set_bit(CONF_STATE2_DEVICE, &chan->conf_state);
} else {
chan->mode = L2CAP_MODE_BASIC;
}
l2cap_chan_set_defaults(chan);
}
/* Default config options */
chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
chan->data = sk;
chan->ops = &l2cap_chan_ops;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 264 | 77.65% | 8 | 42.11% |
johan hedberg | johan hedberg | 42 | 12.35% | 2 | 10.53% |
marcel holtmann | marcel holtmann | 11 | 3.24% | 2 | 10.53% |
andrei emeltchenko | andrei emeltchenko | 7 | 2.06% | 4 | 21.05% |
jaikumar ganesh | jaikumar ganesh | 7 | 2.06% | 1 | 5.26% |
paul moore | paul moore | 7 | 2.06% | 1 | 5.26% |
gustavo padovan | gustavo padovan | 2 | 0.59% | 1 | 5.26% |
| Total | 340 | 100.00% | 19 | 100.00% |
static struct proto l2cap_proto = {
.name = "L2CAP",
.owner = THIS_MODULE,
.obj_size = sizeof(struct l2cap_pinfo)
};
static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
int proto, gfp_t prio, int kern)
{
struct sock *sk;
struct l2cap_chan *chan;
sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto, kern);
if (!sk)
return NULL;
sock_init_data(sock, sk);
INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
sk->sk_destruct = l2cap_sock_destruct;
sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT;
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = proto;
sk->sk_state = BT_OPEN;
chan = l2cap_chan_create();
if (!chan) {
sk_free(sk);
return NULL;
}
l2cap_chan_hold(chan);
l2cap_pi(sk)->chan = chan;
return sk;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 135 | 91.84% | 3 | 42.86% |
mat martineau | mat martineau | 5 | 3.40% | 1 | 14.29% |
eric w. biederman | eric w. biederman | 5 | 3.40% | 1 | 14.29% |
jaganath kanakkassery | jaganath kanakkassery | 1 | 0.68% | 1 | 14.29% |
gustavo padovan | gustavo padovan | 1 | 0.68% | 1 | 14.29% |
| Total | 147 | 100.00% | 7 | 100.00% |
static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
int kern)
{
struct sock *sk;
BT_DBG("sock %p", sock);
sock->state = SS_UNCONNECTED;
if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM &&
sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
return -EPERM;
sock->ops = &l2cap_sock_ops;
sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
if (!sk)
return -ENOMEM;
l2cap_sock_init(sk, NULL);
bt_sock_link(&l2cap_sk_list, sk);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 130 | 92.86% | 1 | 33.33% |
masatake yamato | masatake yamato | 8 | 5.71% | 1 | 33.33% |
eric w. biederman | eric w. biederman | 2 | 1.43% | 1 | 33.33% |
| Total | 140 | 100.00% | 3 | 100.00% |
static const struct proto_ops l2cap_sock_ops = {
.family = PF_BLUETOOTH,
.owner = THIS_MODULE,
.release = l2cap_sock_release,
.bind = l2cap_sock_bind,
.connect = l2cap_sock_connect,
.listen = l2cap_sock_listen,
.accept = l2cap_sock_accept,
.getname = l2cap_sock_getname,
.sendmsg = l2cap_sock_sendmsg,
.recvmsg = l2cap_sock_recvmsg,
.poll = bt_sock_poll,
.ioctl = bt_sock_ioctl,
.mmap = sock_no_mmap,
.socketpair = sock_no_socketpair,
.shutdown = l2cap_sock_shutdown,
.setsockopt = l2cap_sock_setsockopt,
.getsockopt = l2cap_sock_getsockopt
};
static const struct net_proto_family l2cap_sock_family_ops = {
.family = PF_BLUETOOTH,
.owner = THIS_MODULE,
.create = l2cap_sock_create,
};
int __init l2cap_init_sockets(void)
{
int err;
BUILD_BUG_ON(sizeof(struct sockaddr_l2) > sizeof(struct sockaddr));
err = proto_register(&l2cap_proto, 0);
if (err < 0)
return err;
err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops);
if (err < 0) {
BT_ERR("L2CAP socket registration failed");
goto error;
}
err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list,
NULL);
if (err < 0) {
BT_ERR("Failed to create L2CAP proc file");
bt_sock_unregister(BTPROTO_L2CAP);
goto error;
}
BT_INFO("L2CAP socket layer initialized");
return 0;
error:
proto_unregister(&l2cap_proto);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 68 | 53.97% | 1 | 33.33% |
masatake yamato | masatake yamato | 43 | 34.13% | 1 | 33.33% |
marcel holtmann | marcel holtmann | 15 | 11.90% | 1 | 33.33% |
| Total | 126 | 100.00% | 3 | 100.00% |
void l2cap_cleanup_sockets(void)
{
bt_procfs_cleanup(&init_net, "l2cap");
bt_sock_unregister(BTPROTO_L2CAP);
proto_unregister(&l2cap_proto);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 18 | 69.23% | 1 | 50.00% |
masatake yamato | masatake yamato | 8 | 30.77% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
gustavo f. padovan | gustavo f. padovan | 3776 | 52.69% | 38 | 22.89% |
johan hedberg | johan hedberg | 917 | 12.79% | 33 | 19.88% |
andrei emeltchenko | andrei emeltchenko | 548 | 7.65% | 18 | 10.84% |
gustavo padovan | gustavo padovan | 473 | 6.60% | 17 | 10.24% |
mat martineau | mat martineau | 342 | 4.77% | 5 | 3.01% |
marcel holtmann | marcel holtmann | 307 | 4.28% | 16 | 9.64% |
dean jenkins | dean jenkins | 218 | 3.04% | 8 | 4.82% |
jaikumar ganesh | jaikumar ganesh | 159 | 2.22% | 1 | 0.60% |
masatake yamato | masatake yamato | 82 | 1.14% | 1 | 0.60% |
vinicius costa gomes | vinicius costa gomes | 75 | 1.05% | 3 | 1.81% |
andre guedes | andre guedes | 71 | 0.99% | 3 | 1.81% |
peter hurley | peter hurley | 43 | 0.60% | 2 | 1.20% |
david herrmann | david herrmann | 25 | 0.35% | 1 | 0.60% |
filip palian | filip palian | 13 | 0.18% | 1 | 0.60% |
mathias krause | mathias krause | 13 | 0.18% | 1 | 0.60% |
vasiliy kulikov | vasiliy kulikov | 13 | 0.18% | 1 | 0.60% |
jukka taimisto | jukka taimisto | 12 | 0.17% | 1 | 0.60% |
eric w. biederman | eric w. biederman | 12 | 0.17% | 1 | 0.60% |
ville tervo | ville tervo | 11 | 0.15% | 2 | 1.20% |
vladimir davydov | vladimir davydov | 9 | 0.13% | 1 | 0.60% |
sasha levin | sasha levin | 9 | 0.13% | 1 | 0.60% |
steffen hurrle | steffen hurrle | 7 | 0.10% | 1 | 0.60% |
octavian purdila | octavian purdila | 7 | 0.10% | 1 | 0.60% |
paul moore | paul moore | 7 | 0.10% | 1 | 0.60% |
santosh nayak | santosh nayak | 6 | 0.08% | 1 | 0.60% |
paul gortmaker | paul gortmaker | 3 | 0.04% | 1 | 0.60% |
joe perches | joe perches | 3 | 0.04% | 1 | 0.60% |
johannes berg | johannes berg | 2 | 0.03% | 1 | 0.60% |
jaganath kanakkassery | jaganath kanakkassery | 2 | 0.03% | 2 | 1.20% |
lucas de marchi | lucas de marchi | 1 | 0.01% | 1 | 0.60% |
patrik flykt | patrik flykt | 1 | 0.01% | 1 | 0.60% |
| Total | 7167 | 100.00% | 166 | 100.00% |
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