![David S. Miller](/assets/img/avatar_default.png)
John W. Linville says: ==================== pull request: wireless-next 2014-12-08 Please pull this last batch of pending wireless updates for the 3.19 tree... For the wireless bits, Johannes says: "This time I have Felix's no-status rate control work, which will allow drivers to work better with rate control even if they don't have perfect status reporting. In addition to this, a small hwsim fix from Patrik, one of the regulatory patches from Arik, and a number of cleanups and fixes I did myself. Of note is a patch where I disable CFG80211_WEXT so that compatibility is no longer selectable - this is intended as a wake-up call for anyone who's still using it, and is still easily worked around (it's a one-line patch) before we fully remove the code as well in the future." For the Bluetooth bits, Johan says: "Here's one more bluetooth-next pull request for 3.19: - Minor cleanups for ieee802154 & mac802154 - Fix for the kernel warning with !TASK_RUNNING reported by Kirill A. Shutemov - Support for another ath3k device - Fix for tracking link key based security level - Device tree bindings for btmrvl + a state update fix - Fix for wrong ACL flags on LE links" And... "In addition to the previous one this contains two more cleanups to mac802154 as well as support for some new HCI features from the Bluetooth 4.2 specification. From the original request: 'Here's what should be the last bluetooth-next pull request for 3.19. It's rather large but the majority of it is the Low Energy Secure Connections feature that's part of the Bluetooth 4.2 specification. The specification went public only this week so we couldn't publish the corresponding code before that. The code itself can nevertheless be considered fairly mature as it's been in development for over 6 months and gone through several interoperability test events. Besides LE SC the pull request contains an important fix for command complete events for mgmt sockets which also fixes some leaks of hci_conn objects when powering off or unplugging Bluetooth adapters. A smaller feature that's part of the pull request is service discovery support. This is like normal device discovery except that devices not matching specific UUIDs or strong enough RSSI are filtered out. Other changes that the pull request contains are firmware dump support to the btmrvl driver, firmware download support for Broadcom BCM20702A0 variants, as well as some coding style cleanups in 6lowpan & ieee802154/mac802154 code.'" For the NFC bits, Samuel says: "With this one we get: - NFC digital improvements for DEP support: Chaining, NACK and ATN support added. - NCI improvements: Support for p2p target, SE IO operand addition, SE operands extensions to support proprietary implementations, and a few fixes. - NFC HCI improvements: OPEN_PIPE and NOTIFY_ALL_CLEARED support, and SE IO operand addition. - A bunch of minor improvements and fixes for STMicro st21nfcb and st21nfca" For the iwlwifi bits, Emmanuel says: "Major works are CSA and TDLS. On top of that I have a new firmware API for scan and a few rate control improvements. Johannes find a few tricks to improve our CPU utilization and adds support for a new spin of 7265 called 7265D. Along with this a few random things that don't stand out." And... "I deprecate here -8.ucode since -9 has been published long ago. Along with that I have a new activity, we have now better a infrastructure for firmware debugging. This will allow to have configurable probes insides the firmware. Luca continues his work on NetDetect, this feature is now complete. All the rest is minor fixes here and there." For the Atheros bits, Kalle says: "Only ath10k changes this time and no major changes. Most visible are: o new debugfs interface for runtime firmware debugging (Yanbo) o fix shared WEP (Sujith) o don't rebuild whenever kernel version changes (Johannes) o lots of refactoring to make it easier to add new hw support (Michal) There's also smaller fixes and improvements with no point of listing here." In addition, there are a few last minute updates to ath5k, ath9k, brcmfmac, brcmsmac, mwifiex, rt2x00, rtlwifi, and wil6210. Also included is a pull of the wireless tree to pick-up the fixes originally included in "pull request: wireless 2014-12-03"... Please let me know if there are problems! ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
782 lines
17 KiB
C
782 lines
17 KiB
C
/*
|
|
BlueZ - Bluetooth protocol stack for Linux
|
|
Copyright (C) 2000-2001 Qualcomm Incorporated
|
|
|
|
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 address family and sockets. */
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/debugfs.h>
|
|
#include <asm/ioctls.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
#include <linux/proc_fs.h>
|
|
|
|
#define VERSION "2.20"
|
|
|
|
/* Bluetooth sockets */
|
|
#define BT_MAX_PROTO 8
|
|
static const struct net_proto_family *bt_proto[BT_MAX_PROTO];
|
|
static DEFINE_RWLOCK(bt_proto_lock);
|
|
|
|
static struct lock_class_key bt_lock_key[BT_MAX_PROTO];
|
|
static const char *const bt_key_strings[BT_MAX_PROTO] = {
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_HCI",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_SCO",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_BNEP",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_CMTP",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_HIDP",
|
|
"sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP",
|
|
};
|
|
|
|
static struct lock_class_key bt_slock_key[BT_MAX_PROTO];
|
|
static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {
|
|
"slock-AF_BLUETOOTH-BTPROTO_L2CAP",
|
|
"slock-AF_BLUETOOTH-BTPROTO_HCI",
|
|
"slock-AF_BLUETOOTH-BTPROTO_SCO",
|
|
"slock-AF_BLUETOOTH-BTPROTO_RFCOMM",
|
|
"slock-AF_BLUETOOTH-BTPROTO_BNEP",
|
|
"slock-AF_BLUETOOTH-BTPROTO_CMTP",
|
|
"slock-AF_BLUETOOTH-BTPROTO_HIDP",
|
|
"slock-AF_BLUETOOTH-BTPROTO_AVDTP",
|
|
};
|
|
|
|
void bt_sock_reclassify_lock(struct sock *sk, int proto)
|
|
{
|
|
BUG_ON(!sk);
|
|
BUG_ON(sock_owned_by_user(sk));
|
|
|
|
sock_lock_init_class_and_name(sk,
|
|
bt_slock_key_strings[proto], &bt_slock_key[proto],
|
|
bt_key_strings[proto], &bt_lock_key[proto]);
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_reclassify_lock);
|
|
|
|
int bt_sock_register(int proto, const struct net_proto_family *ops)
|
|
{
|
|
int err = 0;
|
|
|
|
if (proto < 0 || proto >= BT_MAX_PROTO)
|
|
return -EINVAL;
|
|
|
|
write_lock(&bt_proto_lock);
|
|
|
|
if (bt_proto[proto])
|
|
err = -EEXIST;
|
|
else
|
|
bt_proto[proto] = ops;
|
|
|
|
write_unlock(&bt_proto_lock);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_register);
|
|
|
|
void bt_sock_unregister(int proto)
|
|
{
|
|
if (proto < 0 || proto >= BT_MAX_PROTO)
|
|
return;
|
|
|
|
write_lock(&bt_proto_lock);
|
|
bt_proto[proto] = NULL;
|
|
write_unlock(&bt_proto_lock);
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_unregister);
|
|
|
|
static int bt_sock_create(struct net *net, struct socket *sock, int proto,
|
|
int kern)
|
|
{
|
|
int err;
|
|
|
|
if (net != &init_net)
|
|
return -EAFNOSUPPORT;
|
|
|
|
if (proto < 0 || proto >= BT_MAX_PROTO)
|
|
return -EINVAL;
|
|
|
|
if (!bt_proto[proto])
|
|
request_module("bt-proto-%d", proto);
|
|
|
|
err = -EPROTONOSUPPORT;
|
|
|
|
read_lock(&bt_proto_lock);
|
|
|
|
if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
|
|
err = bt_proto[proto]->create(net, sock, proto, kern);
|
|
if (!err)
|
|
bt_sock_reclassify_lock(sock->sk, proto);
|
|
module_put(bt_proto[proto]->owner);
|
|
}
|
|
|
|
read_unlock(&bt_proto_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
void bt_sock_link(struct bt_sock_list *l, struct sock *sk)
|
|
{
|
|
write_lock(&l->lock);
|
|
sk_add_node(sk, &l->head);
|
|
write_unlock(&l->lock);
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_link);
|
|
|
|
void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
|
|
{
|
|
write_lock(&l->lock);
|
|
sk_del_node_init(sk);
|
|
write_unlock(&l->lock);
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_unlink);
|
|
|
|
void bt_accept_enqueue(struct sock *parent, struct sock *sk)
|
|
{
|
|
BT_DBG("parent %p, sk %p", parent, sk);
|
|
|
|
sock_hold(sk);
|
|
list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q);
|
|
bt_sk(sk)->parent = parent;
|
|
parent->sk_ack_backlog++;
|
|
}
|
|
EXPORT_SYMBOL(bt_accept_enqueue);
|
|
|
|
void bt_accept_unlink(struct sock *sk)
|
|
{
|
|
BT_DBG("sk %p state %d", sk, sk->sk_state);
|
|
|
|
list_del_init(&bt_sk(sk)->accept_q);
|
|
bt_sk(sk)->parent->sk_ack_backlog--;
|
|
bt_sk(sk)->parent = NULL;
|
|
sock_put(sk);
|
|
}
|
|
EXPORT_SYMBOL(bt_accept_unlink);
|
|
|
|
struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
|
|
{
|
|
struct list_head *p, *n;
|
|
struct sock *sk;
|
|
|
|
BT_DBG("parent %p", parent);
|
|
|
|
list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
|
|
sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
|
|
|
|
lock_sock(sk);
|
|
|
|
/* FIXME: Is this check still needed */
|
|
if (sk->sk_state == BT_CLOSED) {
|
|
release_sock(sk);
|
|
bt_accept_unlink(sk);
|
|
continue;
|
|
}
|
|
|
|
if (sk->sk_state == BT_CONNECTED || !newsock ||
|
|
test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) {
|
|
bt_accept_unlink(sk);
|
|
if (newsock)
|
|
sock_graft(sk, newsock);
|
|
|
|
release_sock(sk);
|
|
return sk;
|
|
}
|
|
|
|
release_sock(sk);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(bt_accept_dequeue);
|
|
|
|
int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
|
|
struct msghdr *msg, size_t len, int flags)
|
|
{
|
|
int noblock = flags & MSG_DONTWAIT;
|
|
struct sock *sk = sock->sk;
|
|
struct sk_buff *skb;
|
|
size_t copied;
|
|
int err;
|
|
|
|
BT_DBG("sock %p sk %p len %zu", sock, sk, len);
|
|
|
|
if (flags & (MSG_OOB))
|
|
return -EOPNOTSUPP;
|
|
|
|
skb = skb_recv_datagram(sk, flags, noblock, &err);
|
|
if (!skb) {
|
|
if (sk->sk_shutdown & RCV_SHUTDOWN)
|
|
return 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
copied = skb->len;
|
|
if (len < copied) {
|
|
msg->msg_flags |= MSG_TRUNC;
|
|
copied = len;
|
|
}
|
|
|
|
skb_reset_transport_header(skb);
|
|
err = skb_copy_datagram_msg(skb, 0, msg, copied);
|
|
if (err == 0) {
|
|
sock_recv_ts_and_drops(msg, sk, skb);
|
|
|
|
if (bt_sk(sk)->skb_msg_name)
|
|
bt_sk(sk)->skb_msg_name(skb, msg->msg_name,
|
|
&msg->msg_namelen);
|
|
}
|
|
|
|
skb_free_datagram(sk, skb);
|
|
|
|
return err ? : copied;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_recvmsg);
|
|
|
|
static long bt_sock_data_wait(struct sock *sk, long timeo)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
|
|
add_wait_queue(sk_sleep(sk), &wait);
|
|
for (;;) {
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
|
|
if (!skb_queue_empty(&sk->sk_receive_queue))
|
|
break;
|
|
|
|
if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN))
|
|
break;
|
|
|
|
if (signal_pending(current) || !timeo)
|
|
break;
|
|
|
|
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
|
|
release_sock(sk);
|
|
timeo = schedule_timeout(timeo);
|
|
lock_sock(sk);
|
|
clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
|
|
}
|
|
|
|
__set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(sk_sleep(sk), &wait);
|
|
return timeo;
|
|
}
|
|
|
|
int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
|
|
struct msghdr *msg, size_t size, int flags)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
int err = 0;
|
|
size_t target, copied = 0;
|
|
long timeo;
|
|
|
|
if (flags & MSG_OOB)
|
|
return -EOPNOTSUPP;
|
|
|
|
BT_DBG("sk %p size %zu", sk, size);
|
|
|
|
lock_sock(sk);
|
|
|
|
target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
|
|
timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
|
|
|
|
do {
|
|
struct sk_buff *skb;
|
|
int chunk;
|
|
|
|
skb = skb_dequeue(&sk->sk_receive_queue);
|
|
if (!skb) {
|
|
if (copied >= target)
|
|
break;
|
|
|
|
err = sock_error(sk);
|
|
if (err)
|
|
break;
|
|
if (sk->sk_shutdown & RCV_SHUTDOWN)
|
|
break;
|
|
|
|
err = -EAGAIN;
|
|
if (!timeo)
|
|
break;
|
|
|
|
timeo = bt_sock_data_wait(sk, timeo);
|
|
|
|
if (signal_pending(current)) {
|
|
err = sock_intr_errno(timeo);
|
|
goto out;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
chunk = min_t(unsigned int, skb->len, size);
|
|
if (skb_copy_datagram_msg(skb, 0, msg, chunk)) {
|
|
skb_queue_head(&sk->sk_receive_queue, skb);
|
|
if (!copied)
|
|
copied = -EFAULT;
|
|
break;
|
|
}
|
|
copied += chunk;
|
|
size -= chunk;
|
|
|
|
sock_recv_ts_and_drops(msg, sk, skb);
|
|
|
|
if (!(flags & MSG_PEEK)) {
|
|
int skb_len = skb_headlen(skb);
|
|
|
|
if (chunk <= skb_len) {
|
|
__skb_pull(skb, chunk);
|
|
} else {
|
|
struct sk_buff *frag;
|
|
|
|
__skb_pull(skb, skb_len);
|
|
chunk -= skb_len;
|
|
|
|
skb_walk_frags(skb, frag) {
|
|
if (chunk <= frag->len) {
|
|
/* Pulling partial data */
|
|
skb->len -= chunk;
|
|
skb->data_len -= chunk;
|
|
__skb_pull(frag, chunk);
|
|
break;
|
|
} else if (frag->len) {
|
|
/* Pulling all frag data */
|
|
chunk -= frag->len;
|
|
skb->len -= frag->len;
|
|
skb->data_len -= frag->len;
|
|
__skb_pull(frag, frag->len);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (skb->len) {
|
|
skb_queue_head(&sk->sk_receive_queue, skb);
|
|
break;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
} else {
|
|
/* put message back and return */
|
|
skb_queue_head(&sk->sk_receive_queue, skb);
|
|
break;
|
|
}
|
|
} while (size);
|
|
|
|
out:
|
|
release_sock(sk);
|
|
return copied ? : err;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_stream_recvmsg);
|
|
|
|
static inline unsigned int bt_accept_poll(struct sock *parent)
|
|
{
|
|
struct list_head *p, *n;
|
|
struct sock *sk;
|
|
|
|
list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
|
|
sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
|
|
if (sk->sk_state == BT_CONNECTED ||
|
|
(test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) &&
|
|
sk->sk_state == BT_CONNECT2))
|
|
return POLLIN | POLLRDNORM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
unsigned int bt_sock_poll(struct file *file, struct socket *sock,
|
|
poll_table *wait)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
unsigned int mask = 0;
|
|
|
|
BT_DBG("sock %p, sk %p", sock, sk);
|
|
|
|
poll_wait(file, sk_sleep(sk), wait);
|
|
|
|
if (sk->sk_state == BT_LISTEN)
|
|
return bt_accept_poll(sk);
|
|
|
|
if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
|
|
mask |= POLLERR |
|
|
(sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
|
|
|
|
if (sk->sk_shutdown & RCV_SHUTDOWN)
|
|
mask |= POLLRDHUP | POLLIN | POLLRDNORM;
|
|
|
|
if (sk->sk_shutdown == SHUTDOWN_MASK)
|
|
mask |= POLLHUP;
|
|
|
|
if (!skb_queue_empty(&sk->sk_receive_queue))
|
|
mask |= POLLIN | POLLRDNORM;
|
|
|
|
if (sk->sk_state == BT_CLOSED)
|
|
mask |= POLLHUP;
|
|
|
|
if (sk->sk_state == BT_CONNECT ||
|
|
sk->sk_state == BT_CONNECT2 ||
|
|
sk->sk_state == BT_CONFIG)
|
|
return mask;
|
|
|
|
if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk))
|
|
mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
|
|
else
|
|
set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
|
|
|
|
return mask;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_poll);
|
|
|
|
int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
struct sk_buff *skb;
|
|
long amount;
|
|
int err;
|
|
|
|
BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
|
|
|
|
switch (cmd) {
|
|
case TIOCOUTQ:
|
|
if (sk->sk_state == BT_LISTEN)
|
|
return -EINVAL;
|
|
|
|
amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
|
|
if (amount < 0)
|
|
amount = 0;
|
|
err = put_user(amount, (int __user *) arg);
|
|
break;
|
|
|
|
case TIOCINQ:
|
|
if (sk->sk_state == BT_LISTEN)
|
|
return -EINVAL;
|
|
|
|
lock_sock(sk);
|
|
skb = skb_peek(&sk->sk_receive_queue);
|
|
amount = skb ? skb->len : 0;
|
|
release_sock(sk);
|
|
err = put_user(amount, (int __user *) arg);
|
|
break;
|
|
|
|
case SIOCGSTAMP:
|
|
err = sock_get_timestamp(sk, (struct timeval __user *) arg);
|
|
break;
|
|
|
|
case SIOCGSTAMPNS:
|
|
err = sock_get_timestampns(sk, (struct timespec __user *) arg);
|
|
break;
|
|
|
|
default:
|
|
err = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_ioctl);
|
|
|
|
/* This function expects the sk lock to be held when called */
|
|
int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
int err = 0;
|
|
|
|
BT_DBG("sk %p", sk);
|
|
|
|
add_wait_queue(sk_sleep(sk), &wait);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
while (sk->sk_state != state) {
|
|
if (!timeo) {
|
|
err = -EINPROGRESS;
|
|
break;
|
|
}
|
|
|
|
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;
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(sk_sleep(sk), &wait);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_wait_state);
|
|
|
|
/* This function expects the sk lock to be held when called */
|
|
int bt_sock_wait_ready(struct sock *sk, unsigned long flags)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
unsigned long timeo;
|
|
int err = 0;
|
|
|
|
BT_DBG("sk %p", sk);
|
|
|
|
timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
|
|
|
|
add_wait_queue(sk_sleep(sk), &wait);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) {
|
|
if (!timeo) {
|
|
err = -EAGAIN;
|
|
break;
|
|
}
|
|
|
|
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;
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(sk_sleep(sk), &wait);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(bt_sock_wait_ready);
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
struct bt_seq_state {
|
|
struct bt_sock_list *l;
|
|
};
|
|
|
|
static void *bt_seq_start(struct seq_file *seq, loff_t *pos)
|
|
__acquires(seq->private->l->lock)
|
|
{
|
|
struct bt_seq_state *s = seq->private;
|
|
struct bt_sock_list *l = s->l;
|
|
|
|
read_lock(&l->lock);
|
|
return seq_hlist_start_head(&l->head, *pos);
|
|
}
|
|
|
|
static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
struct bt_seq_state *s = seq->private;
|
|
struct bt_sock_list *l = s->l;
|
|
|
|
return seq_hlist_next(v, &l->head, pos);
|
|
}
|
|
|
|
static void bt_seq_stop(struct seq_file *seq, void *v)
|
|
__releases(seq->private->l->lock)
|
|
{
|
|
struct bt_seq_state *s = seq->private;
|
|
struct bt_sock_list *l = s->l;
|
|
|
|
read_unlock(&l->lock);
|
|
}
|
|
|
|
static int bt_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct bt_seq_state *s = seq->private;
|
|
struct bt_sock_list *l = s->l;
|
|
|
|
if (v == SEQ_START_TOKEN) {
|
|
seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Parent");
|
|
|
|
if (l->custom_seq_show) {
|
|
seq_putc(seq, ' ');
|
|
l->custom_seq_show(seq, v);
|
|
}
|
|
|
|
seq_putc(seq, '\n');
|
|
} else {
|
|
struct sock *sk = sk_entry(v);
|
|
struct bt_sock *bt = bt_sk(sk);
|
|
|
|
seq_printf(seq,
|
|
"%pK %-6d %-6u %-6u %-6u %-6lu %-6lu",
|
|
sk,
|
|
atomic_read(&sk->sk_refcnt),
|
|
sk_rmem_alloc_get(sk),
|
|
sk_wmem_alloc_get(sk),
|
|
from_kuid(seq_user_ns(seq), sock_i_uid(sk)),
|
|
sock_i_ino(sk),
|
|
bt->parent? sock_i_ino(bt->parent): 0LU);
|
|
|
|
if (l->custom_seq_show) {
|
|
seq_putc(seq, ' ');
|
|
l->custom_seq_show(seq, v);
|
|
}
|
|
|
|
seq_putc(seq, '\n');
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations bt_seq_ops = {
|
|
.start = bt_seq_start,
|
|
.next = bt_seq_next,
|
|
.stop = bt_seq_stop,
|
|
.show = bt_seq_show,
|
|
};
|
|
|
|
static int bt_seq_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct bt_sock_list *sk_list;
|
|
struct bt_seq_state *s;
|
|
|
|
sk_list = PDE_DATA(inode);
|
|
s = __seq_open_private(file, &bt_seq_ops,
|
|
sizeof(struct bt_seq_state));
|
|
if (!s)
|
|
return -ENOMEM;
|
|
|
|
s->l = sk_list;
|
|
return 0;
|
|
}
|
|
|
|
static const struct file_operations bt_fops = {
|
|
.open = bt_seq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release_private
|
|
};
|
|
|
|
int bt_procfs_init(struct net *net, const char *name,
|
|
struct bt_sock_list* sk_list,
|
|
int (* seq_show)(struct seq_file *, void *))
|
|
{
|
|
sk_list->custom_seq_show = seq_show;
|
|
|
|
if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list))
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
void bt_procfs_cleanup(struct net *net, const char *name)
|
|
{
|
|
remove_proc_entry(name, net->proc_net);
|
|
}
|
|
#else
|
|
int bt_procfs_init(struct net *net, const char *name,
|
|
struct bt_sock_list* sk_list,
|
|
int (* seq_show)(struct seq_file *, void *))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void bt_procfs_cleanup(struct net *net, const char *name)
|
|
{
|
|
}
|
|
#endif
|
|
EXPORT_SYMBOL(bt_procfs_init);
|
|
EXPORT_SYMBOL(bt_procfs_cleanup);
|
|
|
|
static struct net_proto_family bt_sock_family_ops = {
|
|
.owner = THIS_MODULE,
|
|
.family = PF_BLUETOOTH,
|
|
.create = bt_sock_create,
|
|
};
|
|
|
|
struct dentry *bt_debugfs;
|
|
EXPORT_SYMBOL_GPL(bt_debugfs);
|
|
|
|
static int __init bt_init(void)
|
|
{
|
|
struct sk_buff *skb;
|
|
int err;
|
|
|
|
BUILD_BUG_ON(sizeof(struct bt_skb_cb) > sizeof(skb->cb));
|
|
|
|
BT_INFO("Core ver %s", VERSION);
|
|
|
|
bt_debugfs = debugfs_create_dir("bluetooth", NULL);
|
|
|
|
err = bt_sysfs_init();
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = sock_register(&bt_sock_family_ops);
|
|
if (err < 0) {
|
|
bt_sysfs_cleanup();
|
|
return err;
|
|
}
|
|
|
|
BT_INFO("HCI device and connection manager initialized");
|
|
|
|
err = hci_sock_init();
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
err = l2cap_init();
|
|
if (err < 0)
|
|
goto sock_err;
|
|
|
|
err = sco_init();
|
|
if (err < 0) {
|
|
l2cap_exit();
|
|
goto sock_err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
sock_err:
|
|
hci_sock_cleanup();
|
|
|
|
error:
|
|
sock_unregister(PF_BLUETOOTH);
|
|
bt_sysfs_cleanup();
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit bt_exit(void)
|
|
{
|
|
sco_exit();
|
|
|
|
l2cap_exit();
|
|
|
|
hci_sock_cleanup();
|
|
|
|
sock_unregister(PF_BLUETOOTH);
|
|
|
|
bt_sysfs_cleanup();
|
|
|
|
debugfs_remove_recursive(bt_debugfs);
|
|
}
|
|
|
|
subsys_initcall(bt_init);
|
|
module_exit(bt_exit);
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS_NETPROTO(PF_BLUETOOTH);
|