/*
* Bluetooth RFCOMM core.
- *
- * $Id: core.c,v 1.42 2002/10/01 23:26:25 maxk Exp $
*/
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/init.h>
-#include <linux/freezer.h>
#include <linux/wait.h>
#include <linux/device.h>
#include <linux/net.h>
#include <linux/mutex.h>
+#include <linux/kthread.h>
#include <net/sock.h>
#include <asm/uaccess.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/rfcomm.h>
-#ifndef CONFIG_BT_RFCOMM_DEBUG
-#undef BT_DBG
-#define BT_DBG(D...)
-#endif
-
-#define VERSION "1.8"
+#define VERSION "1.11"
static int disable_cfc = 0;
static int channel_mtu = -1;
static unsigned long rfcomm_event;
static LIST_HEAD(session_list);
-static atomic_t terminate, running;
static int rfcomm_send_frame(struct rfcomm_session *s, u8 *data, int len);
static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci);
return err;
}
+static inline int rfcomm_check_security(struct rfcomm_dlc *d)
+{
+ struct sock *sk = d->session->sock->sk;
+ __u8 auth_type;
+
+ switch (d->sec_level) {
+ case BT_SECURITY_HIGH:
+ auth_type = HCI_AT_GENERAL_BONDING_MITM;
+ break;
+ case BT_SECURITY_MEDIUM:
+ auth_type = HCI_AT_GENERAL_BONDING;
+ break;
+ default:
+ auth_type = HCI_AT_NO_BONDING;
+ break;
+ }
+
+ return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level,
+ auth_type);
+}
+
/* ---- RFCOMM DLCs ---- */
static void rfcomm_dlc_timeout(unsigned long arg)
{
if (!d)
return NULL;
- init_timer(&d->timer);
- d->timer.function = rfcomm_dlc_timeout;
- d->timer.data = (unsigned long) d;
+ setup_timer(&d->timer, rfcomm_dlc_timeout, (unsigned long)d);
skb_queue_head_init(&d->tx_queue);
spin_lock_init(&d->lock);
d->addr = __addr(s->initiator, dlci);
d->priority = 7;
- d->state = BT_CONFIG;
+ d->state = BT_CONFIG;
rfcomm_dlc_link(s, d);
+ d->out = 1;
+
d->mtu = s->mtu;
d->cfc = (s->cfc == RFCOMM_CFC_UNKNOWN) ? 0 : s->cfc;
- if (s->state == BT_CONNECTED)
- rfcomm_send_pn(s, 1, d);
+ if (s->state == BT_CONNECTED) {
+ if (rfcomm_check_security(d))
+ rfcomm_send_pn(s, 1, d);
+ else
+ set_bit(RFCOMM_AUTH_PENDING, &d->flags);
+ }
+
rfcomm_dlc_set_timer(d, RFCOMM_CONN_TIMEOUT);
+
return 0;
}
d, d->state, d->dlci, err, s);
switch (d->state) {
- case BT_CONNECTED:
- case BT_CONFIG:
case BT_CONNECT:
+ case BT_CONFIG:
+ if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
+ set_bit(RFCOMM_AUTH_REJECT, &d->flags);
+ rfcomm_schedule(RFCOMM_SCHED_AUTH);
+ break;
+ }
+ /* Fall through */
+
+ case BT_CONNECTED:
d->state = BT_DISCONN;
if (skb_queue_empty(&d->tx_queue)) {
rfcomm_send_disc(s, d->dlci);
}
break;
+ case BT_OPEN:
+ case BT_CONNECT2:
+ if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
+ set_bit(RFCOMM_AUTH_REJECT, &d->flags);
+ rfcomm_schedule(RFCOMM_SCHED_AUTH);
+ break;
+ }
+ /* Fall through */
+
default:
rfcomm_dlc_clear_timer(d);
return len;
}
-void fastcall __rfcomm_dlc_throttle(struct rfcomm_dlc *d)
+void __rfcomm_dlc_throttle(struct rfcomm_dlc *d)
{
BT_DBG("dlc %p state %ld", d, d->state);
rfcomm_schedule(RFCOMM_SCHED_TX);
}
-void fastcall __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
+void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
{
BT_DBG("dlc %p state %ld", d, d->state);
bacpy(&addr.l2_bdaddr, src);
addr.l2_family = AF_BLUETOOTH;
addr.l2_psm = 0;
+ addr.l2_cid = 0;
*err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
if (*err < 0)
goto failed;
bacpy(&addr.l2_bdaddr, dst);
addr.l2_family = AF_BLUETOOTH;
addr.l2_psm = htobs(RFCOMM_PSM);
+ addr.l2_cid = 0;
*err = kernel_connect(sock, (struct sockaddr *) &addr, sizeof(addr), O_NONBLOCK);
if (*err == 0 || *err == -EINPROGRESS)
return s;
return 0;
}
-static inline int rfcomm_check_link_mode(struct rfcomm_dlc *d)
-{
- struct sock *sk = d->session->sock->sk;
-
- if (d->link_mode & (RFCOMM_LM_ENCRYPT | RFCOMM_LM_SECURE)) {
- if (!hci_conn_encrypt(l2cap_pi(sk)->conn->hcon))
- return 1;
- } else if (d->link_mode & RFCOMM_LM_AUTH) {
- if (!hci_conn_auth(l2cap_pi(sk)->conn->hcon))
- return 1;
- }
-
- return 0;
-}
-
-static void rfcomm_dlc_accept(struct rfcomm_dlc *d)
+void rfcomm_dlc_accept(struct rfcomm_dlc *d)
{
struct sock *sk = d->session->sock->sk;
d->state_change(d, 0);
rfcomm_dlc_unlock(d);
- if (d->link_mode & RFCOMM_LM_MASTER)
+ if (d->role_switch)
hci_conn_switch_role(l2cap_pi(sk)->conn->hcon, 0x00);
rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);
}
+static void rfcomm_check_accept(struct rfcomm_dlc *d)
+{
+ if (rfcomm_check_security(d)) {
+ if (d->defer_setup) {
+ set_bit(RFCOMM_DEFER_SETUP, &d->flags);
+ rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
+
+ rfcomm_dlc_lock(d);
+ d->state = BT_CONNECT2;
+ d->state_change(d, 0);
+ rfcomm_dlc_unlock(d);
+ } else
+ rfcomm_dlc_accept(d);
+ } else {
+ set_bit(RFCOMM_AUTH_PENDING, &d->flags);
+ rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
+ }
+}
+
static int rfcomm_recv_sabm(struct rfcomm_session *s, u8 dlci)
{
struct rfcomm_dlc *d;
if (d) {
if (d->state == BT_OPEN) {
/* DLC was previously opened by PN request */
- if (rfcomm_check_link_mode(d)) {
- set_bit(RFCOMM_AUTH_PENDING, &d->flags);
- rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
- return 0;
- }
-
- rfcomm_dlc_accept(d);
+ rfcomm_check_accept(d);
}
return 0;
}
d->addr = __addr(s->initiator, dlci);
rfcomm_dlc_link(s, d);
- if (rfcomm_check_link_mode(d)) {
- set_bit(RFCOMM_AUTH_PENDING, &d->flags);
- rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
- return 0;
- }
-
- rfcomm_dlc_accept(d);
+ rfcomm_check_accept(d);
} else {
rfcomm_send_dm(s, dlci);
}
clear_bit(RFCOMM_TX_THROTTLED, &d->flags);
rfcomm_dlc_lock(d);
+
+ d->remote_v24_sig = msc->v24_sig;
+
if (d->modem_status)
d->modem_status(d, msc->v24_sig);
+
rfcomm_dlc_unlock(d);
rfcomm_send_msc(s, 0, dlci, msc->v24_sig);
d = list_entry(p, struct rfcomm_dlc, list);
if (d->state == BT_CONFIG) {
d->mtu = s->mtu;
- rfcomm_send_pn(s, 1, d);
+ if (rfcomm_check_security(d)) {
+ rfcomm_send_pn(s, 1, d);
+ } else {
+ set_bit(RFCOMM_AUTH_PENDING, &d->flags);
+ rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
+ }
}
}
}
if (test_and_clear_bit(RFCOMM_AUTH_ACCEPT, &d->flags)) {
rfcomm_dlc_clear_timer(d);
- rfcomm_dlc_accept(d);
- if (d->link_mode & RFCOMM_LM_SECURE) {
- struct sock *sk = s->sock->sk;
- hci_conn_change_link_key(l2cap_pi(sk)->conn->hcon);
+ if (d->out) {
+ rfcomm_send_pn(s, 1, d);
+ rfcomm_dlc_set_timer(d, RFCOMM_CONN_TIMEOUT);
+ } else {
+ if (d->defer_setup) {
+ set_bit(RFCOMM_DEFER_SETUP, &d->flags);
+ rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
+
+ rfcomm_dlc_lock(d);
+ d->state = BT_CONNECT2;
+ d->state_change(d, 0);
+ rfcomm_dlc_unlock(d);
+ } else
+ rfcomm_dlc_accept(d);
}
continue;
} else if (test_and_clear_bit(RFCOMM_AUTH_REJECT, &d->flags)) {
rfcomm_dlc_clear_timer(d);
- rfcomm_send_dm(s, d->dlci);
+ if (!d->out)
+ rfcomm_send_dm(s, d->dlci);
+ else
+ d->state = BT_CLOSED;
__rfcomm_dlc_close(d, ECONNREFUSED);
continue;
}
+ if (test_bit(RFCOMM_SEC_PENDING, &d->flags))
+ continue;
+
if (test_bit(RFCOMM_TX_THROTTLED, &s->flags))
continue;
if ((d->state == BT_CONNECTED || d->state == BT_DISCONN) &&
- d->mscex == RFCOMM_MSCEX_OK)
+ d->mscex == RFCOMM_MSCEX_OK)
rfcomm_process_tx(d);
}
}
if (err < 0)
return;
- __module_get(nsock->ops->owner);
-
/* Set our callbacks */
nsock->sk->sk_data_ready = rfcomm_l2data_ready;
nsock->sk->sk_state_change = rfcomm_l2state_change;
rfcomm_unlock();
}
-static void rfcomm_worker(void)
-{
- BT_DBG("");
-
- while (!atomic_read(&terminate)) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (!test_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event)) {
- /* No pending events. Let's sleep.
- * Incoming connections and data will wake us up. */
- schedule();
- }
- set_current_state(TASK_RUNNING);
-
- /* Process stuff */
- clear_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
- rfcomm_process_sessions();
- }
- return;
-}
-
static int rfcomm_add_listener(bdaddr_t *ba)
{
struct sockaddr_l2 addr;
bacpy(&addr.l2_bdaddr, ba);
addr.l2_family = AF_BLUETOOTH;
addr.l2_psm = htobs(RFCOMM_PSM);
+ addr.l2_cid = 0;
err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
if (err < 0) {
BT_ERR("Bind failed %d", err);
static int rfcomm_run(void *unused)
{
- rfcomm_thread = current;
-
- atomic_inc(&running);
+ BT_DBG("");
- daemonize("krfcommd");
set_user_nice(current, -10);
- BT_DBG("");
-
rfcomm_add_listener(BDADDR_ANY);
- rfcomm_worker();
+ while (!kthread_should_stop()) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (!test_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event)) {
+ /* No pending events. Let's sleep.
+ * Incoming connections and data will wake us up. */
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+
+ /* Process stuff */
+ clear_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
+ rfcomm_process_sessions();
+ }
rfcomm_kill_listener();
- atomic_dec(&running);
return 0;
}
-static void rfcomm_auth_cfm(struct hci_conn *conn, u8 status)
+static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
{
struct rfcomm_session *s;
struct rfcomm_dlc *d;
struct list_head *p, *n;
- BT_DBG("conn %p status 0x%02x", conn, status);
+ BT_DBG("conn %p status 0x%02x encrypt 0x%02x", conn, status, encrypt);
s = rfcomm_session_get(&conn->hdev->bdaddr, &conn->dst);
if (!s)
list_for_each_safe(p, n, &s->dlcs) {
d = list_entry(p, struct rfcomm_dlc, list);
- if (d->link_mode & (RFCOMM_LM_ENCRYPT | RFCOMM_LM_SECURE))
- continue;
-
- if (!test_and_clear_bit(RFCOMM_AUTH_PENDING, &d->flags))
- continue;
-
- if (!status)
- set_bit(RFCOMM_AUTH_ACCEPT, &d->flags);
- else
- set_bit(RFCOMM_AUTH_REJECT, &d->flags);
- }
-
- rfcomm_session_put(s);
-
- rfcomm_schedule(RFCOMM_SCHED_AUTH);
-}
-
-static void rfcomm_encrypt_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
-{
- struct rfcomm_session *s;
- struct rfcomm_dlc *d;
- struct list_head *p, *n;
-
- BT_DBG("conn %p status 0x%02x encrypt 0x%02x", conn, status, encrypt);
-
- s = rfcomm_session_get(&conn->hdev->bdaddr, &conn->dst);
- if (!s)
- return;
-
- rfcomm_session_hold(s);
+ if (test_and_clear_bit(RFCOMM_SEC_PENDING, &d->flags)) {
+ rfcomm_dlc_clear_timer(d);
+ if (status || encrypt == 0x00) {
+ __rfcomm_dlc_close(d, ECONNREFUSED);
+ continue;
+ }
+ }
- list_for_each_safe(p, n, &s->dlcs) {
- d = list_entry(p, struct rfcomm_dlc, list);
+ if (d->state == BT_CONNECTED && !status && encrypt == 0x00) {
+ if (d->sec_level == BT_SECURITY_MEDIUM) {
+ set_bit(RFCOMM_SEC_PENDING, &d->flags);
+ rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
+ continue;
+ } else if (d->sec_level == BT_SECURITY_HIGH) {
+ __rfcomm_dlc_close(d, ECONNREFUSED);
+ continue;
+ }
+ }
if (!test_and_clear_bit(RFCOMM_AUTH_PENDING, &d->flags))
continue;
- if (!status && encrypt)
+ if (!status)
set_bit(RFCOMM_AUTH_ACCEPT, &d->flags);
else
set_bit(RFCOMM_AUTH_REJECT, &d->flags);
static struct hci_cb rfcomm_cb = {
.name = "RFCOMM",
- .auth_cfm = rfcomm_auth_cfm,
- .encrypt_cfm = rfcomm_encrypt_cfm
+ .security_cfm = rfcomm_security_cfm
};
static ssize_t rfcomm_dlc_sysfs_show(struct class *dev, char *buf)
hci_register_cb(&rfcomm_cb);
- kernel_thread(rfcomm_run, NULL, CLONE_KERNEL);
+ rfcomm_thread = kthread_run(rfcomm_run, NULL, "krfcommd");
+ if (IS_ERR(rfcomm_thread)) {
+ hci_unregister_cb(&rfcomm_cb);
+ return PTR_ERR(rfcomm_thread);
+ }
if (class_create_file(bt_class, &class_attr_rfcomm_dlc) < 0)
BT_ERR("Failed to create RFCOMM info file");
hci_unregister_cb(&rfcomm_cb);
- /* Terminate working thread.
- * ie. Set terminate flag and wake it up */
- atomic_inc(&terminate);
- rfcomm_schedule(RFCOMM_SCHED_STATE);
-
- /* Wait until thread is running */
- while (atomic_read(&running))
- schedule();
+ kthread_stop(rfcomm_thread);
#ifdef CONFIG_BT_RFCOMM_TTY
rfcomm_cleanup_ttys();
module_param(l2cap_mtu, uint, 0644);
MODULE_PARM_DESC(l2cap_mtu, "Default MTU for the L2CAP connection");
-MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth RFCOMM ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff