aboutsummaryrefslogtreecommitdiff
path: root/net/bluetooth/hci_conn.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/bluetooth/hci_conn.c')
-rw-r--r--net/bluetooth/hci_conn.c143
1 files changed, 66 insertions, 77 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3f18a6ed9731..5ad7da217474 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -24,24 +24,11 @@
/* Bluetooth HCI connection handling. */
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/fcntl.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/interrupt.h>
-#include <net/sock.h>
-
-#include <linux/uaccess.h>
-#include <asm/unaligned.h>
+#include <linux/export.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/a2mp.h>
static void hci_le_connect(struct hci_conn *conn)
{
@@ -54,15 +41,15 @@ static void hci_le_connect(struct hci_conn *conn)
conn->sec_level = BT_SECURITY_LOW;
memset(&cp, 0, sizeof(cp));
- cp.scan_interval = cpu_to_le16(0x0060);
- cp.scan_window = cpu_to_le16(0x0030);
+ cp.scan_interval = __constant_cpu_to_le16(0x0060);
+ cp.scan_window = __constant_cpu_to_le16(0x0030);
bacpy(&cp.peer_addr, &conn->dst);
cp.peer_addr_type = conn->dst_type;
- cp.conn_interval_min = cpu_to_le16(0x0028);
- cp.conn_interval_max = cpu_to_le16(0x0038);
- cp.supervision_timeout = cpu_to_le16(0x002a);
- cp.min_ce_len = cpu_to_le16(0x0000);
- cp.max_ce_len = cpu_to_le16(0x0000);
+ cp.conn_interval_min = __constant_cpu_to_le16(0x0028);
+ cp.conn_interval_max = __constant_cpu_to_le16(0x0038);
+ cp.supervision_timeout = __constant_cpu_to_le16(0x002a);
+ cp.min_ce_len = __constant_cpu_to_le16(0x0000);
+ cp.max_ce_len = __constant_cpu_to_le16(0x0000);
hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
}
@@ -99,7 +86,7 @@ void hci_acl_connect(struct hci_conn *conn)
cp.pscan_rep_mode = ie->data.pscan_rep_mode;
cp.pscan_mode = ie->data.pscan_mode;
cp.clock_offset = ie->data.clock_offset |
- cpu_to_le16(0x8000);
+ __constant_cpu_to_le16(0x8000);
}
memcpy(conn->dev_class, ie->data.dev_class, 3);
@@ -120,7 +107,7 @@ static void hci_acl_connect_cancel(struct hci_conn *conn)
{
struct hci_cp_create_conn_cancel cp;
- BT_DBG("%p", conn);
+ BT_DBG("hcon %p", conn);
if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2)
return;
@@ -133,7 +120,7 @@ void hci_acl_disconn(struct hci_conn *conn, __u8 reason)
{
struct hci_cp_disconnect cp;
- BT_DBG("%p", conn);
+ BT_DBG("hcon %p", conn);
conn->state = BT_DISCONN;
@@ -147,7 +134,7 @@ void hci_add_sco(struct hci_conn *conn, __u16 handle)
struct hci_dev *hdev = conn->hdev;
struct hci_cp_add_sco cp;
- BT_DBG("%p", conn);
+ BT_DBG("hcon %p", conn);
conn->state = BT_CONNECT;
conn->out = true;
@@ -165,7 +152,7 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
struct hci_dev *hdev = conn->hdev;
struct hci_cp_setup_sync_conn cp;
- BT_DBG("%p", conn);
+ BT_DBG("hcon %p", conn);
conn->state = BT_CONNECT;
conn->out = true;
@@ -175,9 +162,9 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
cp.handle = cpu_to_le16(handle);
cp.pkt_type = cpu_to_le16(conn->pkt_type);
- cp.tx_bandwidth = cpu_to_le32(0x00001f40);
- cp.rx_bandwidth = cpu_to_le32(0x00001f40);
- cp.max_latency = cpu_to_le16(0xffff);
+ cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40);
+ cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40);
+ cp.max_latency = __constant_cpu_to_le16(0xffff);
cp.voice_setting = cpu_to_le16(hdev->voice_setting);
cp.retrans_effort = 0xff;
@@ -185,7 +172,7 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
}
void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
- u16 latency, u16 to_multiplier)
+ u16 latency, u16 to_multiplier)
{
struct hci_cp_le_conn_update cp;
struct hci_dev *hdev = conn->hdev;
@@ -197,20 +184,19 @@ void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
cp.conn_interval_max = cpu_to_le16(max);
cp.conn_latency = cpu_to_le16(latency);
cp.supervision_timeout = cpu_to_le16(to_multiplier);
- cp.min_ce_len = cpu_to_le16(0x0001);
- cp.max_ce_len = cpu_to_le16(0x0001);
+ cp.min_ce_len = __constant_cpu_to_le16(0x0001);
+ cp.max_ce_len = __constant_cpu_to_le16(0x0001);
hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp);
}
-EXPORT_SYMBOL(hci_le_conn_update);
void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
- __u8 ltk[16])
+ __u8 ltk[16])
{
struct hci_dev *hdev = conn->hdev;
struct hci_cp_le_start_enc cp;
- BT_DBG("%p", conn);
+ BT_DBG("hcon %p", conn);
memset(&cp, 0, sizeof(cp));
@@ -221,18 +207,17 @@ void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp);
}
-EXPORT_SYMBOL(hci_le_start_enc);
/* Device _must_ be locked */
void hci_sco_setup(struct hci_conn *conn, __u8 status)
{
struct hci_conn *sco = conn->link;
- BT_DBG("%p", conn);
-
if (!sco)
return;
+ BT_DBG("hcon %p", conn);
+
if (!status) {
if (lmp_esco_capable(conn->hdev))
hci_setup_sync(sco, conn->handle);
@@ -247,10 +232,10 @@ void hci_sco_setup(struct hci_conn *conn, __u8 status)
static void hci_conn_timeout(struct work_struct *work)
{
struct hci_conn *conn = container_of(work, struct hci_conn,
- disc_work.work);
+ disc_work.work);
__u8 reason;
- BT_DBG("conn %p state %s", conn, state_to_string(conn->state));
+ BT_DBG("hcon %p state %s", conn, state_to_string(conn->state));
if (atomic_read(&conn->refcnt))
return;
@@ -281,7 +266,7 @@ static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
- BT_DBG("conn %p mode %d", conn, conn->mode);
+ BT_DBG("hcon %p mode %d", conn, conn->mode);
if (test_bit(HCI_RAW, &hdev->flags))
return;
@@ -295,9 +280,9 @@ static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) {
struct hci_cp_sniff_subrate cp;
cp.handle = cpu_to_le16(conn->handle);
- cp.max_latency = cpu_to_le16(0);
- cp.min_remote_timeout = cpu_to_le16(0);
- cp.min_local_timeout = cpu_to_le16(0);
+ cp.max_latency = __constant_cpu_to_le16(0);
+ cp.min_remote_timeout = __constant_cpu_to_le16(0);
+ cp.min_local_timeout = __constant_cpu_to_le16(0);
hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp);
}
@@ -306,8 +291,8 @@ static void hci_conn_enter_sniff_mode(struct hci_conn *conn)
cp.handle = cpu_to_le16(conn->handle);
cp.max_interval = cpu_to_le16(hdev->sniff_max_interval);
cp.min_interval = cpu_to_le16(hdev->sniff_min_interval);
- cp.attempt = cpu_to_le16(4);
- cp.timeout = cpu_to_le16(1);
+ cp.attempt = __constant_cpu_to_le16(4);
+ cp.timeout = __constant_cpu_to_le16(1);
hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp);
}
}
@@ -316,7 +301,7 @@ static void hci_conn_idle(unsigned long arg)
{
struct hci_conn *conn = (void *) arg;
- BT_DBG("conn %p mode %d", conn, conn->mode);
+ BT_DBG("hcon %p mode %d", conn, conn->mode);
hci_conn_enter_sniff_mode(conn);
}
@@ -327,7 +312,7 @@ static void hci_conn_auto_accept(unsigned long arg)
struct hci_dev *hdev = conn->hdev;
hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst),
- &conn->dst);
+ &conn->dst);
}
struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
@@ -376,7 +361,7 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout);
setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn);
setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept,
- (unsigned long) conn);
+ (unsigned long) conn);
atomic_set(&conn->refcnt, 0);
@@ -397,7 +382,7 @@ int hci_conn_del(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
- BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle);
+ BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle);
del_timer(&conn->idle_timer);
@@ -425,9 +410,11 @@ int hci_conn_del(struct hci_conn *conn)
}
}
-
hci_chan_list_flush(conn);
+ if (conn->amp_mgr)
+ amp_mgr_put(conn->amp_mgr);
+
hci_conn_hash_del(hdev, conn);
if (hdev->notify)
hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
@@ -454,7 +441,9 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
read_lock(&hci_dev_list_lock);
list_for_each_entry(d, &hci_dev_list, list) {
- if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags))
+ if (!test_bit(HCI_UP, &d->flags) ||
+ test_bit(HCI_RAW, &d->flags) ||
+ d->dev_type != HCI_BREDR)
continue;
/* Simple routing:
@@ -495,6 +484,11 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
if (type == LE_LINK) {
le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst);
if (!le) {
+ le = hci_conn_hash_lookup_state(hdev, LE_LINK,
+ BT_CONNECT);
+ if (le)
+ return ERR_PTR(-EBUSY);
+
le = hci_conn_add(hdev, LE_LINK, dst);
if (!le)
return ERR_PTR(-ENOMEM);
@@ -545,7 +539,7 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
hci_conn_hold(sco);
if (acl->state == BT_CONNECTED &&
- (sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
+ (sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
set_bit(HCI_CONN_POWER_SAVE, &acl->flags);
hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON);
@@ -560,24 +554,22 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
return sco;
}
-EXPORT_SYMBOL(hci_connect);
/* Check link security requirement */
int hci_conn_check_link_mode(struct hci_conn *conn)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT))
return 0;
return 1;
}
-EXPORT_SYMBOL(hci_conn_check_link_mode);
/* Authenticate remote device */
static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (conn->pending_sec_level > sec_level)
sec_level = conn->pending_sec_level;
@@ -600,7 +592,7 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
cp.handle = cpu_to_le16(conn->handle);
hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
- sizeof(cp), &cp);
+ sizeof(cp), &cp);
if (conn->key_type != 0xff)
set_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
}
@@ -611,21 +603,21 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
/* Encrypt the the link */
static void hci_conn_encrypt(struct hci_conn *conn)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
struct hci_cp_set_conn_encrypt cp;
cp.handle = cpu_to_le16(conn->handle);
cp.encrypt = 0x01;
hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
- &cp);
+ &cp);
}
}
/* Enable security */
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
/* For sdp we don't need the link key. */
if (sec_level == BT_SECURITY_SDP)
@@ -648,8 +640,7 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
/* An unauthenticated combination key has sufficient security for
security level 1 and 2. */
if (conn->key_type == HCI_LK_UNAUTH_COMBINATION &&
- (sec_level == BT_SECURITY_MEDIUM ||
- sec_level == BT_SECURITY_LOW))
+ (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW))
goto encrypt;
/* A combination key has always sufficient security for the security
@@ -657,8 +648,7 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
is generated using maximum PIN code length (16).
For pre 2.1 units. */
if (conn->key_type == HCI_LK_COMBINATION &&
- (sec_level != BT_SECURITY_HIGH ||
- conn->pin_length == 16))
+ (sec_level != BT_SECURITY_HIGH || conn->pin_length == 16))
goto encrypt;
auth:
@@ -680,7 +670,7 @@ EXPORT_SYMBOL(hci_conn_security);
/* Check secure link requirement */
int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (sec_level != BT_SECURITY_HIGH)
return 1; /* Accept if non-secure is required */
@@ -695,23 +685,22 @@ EXPORT_SYMBOL(hci_conn_check_secure);
/* Change link key */
int hci_conn_change_link_key(struct hci_conn *conn)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
struct hci_cp_change_conn_link_key cp;
cp.handle = cpu_to_le16(conn->handle);
hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY,
- sizeof(cp), &cp);
+ sizeof(cp), &cp);
}
return 0;
}
-EXPORT_SYMBOL(hci_conn_change_link_key);
/* Switch role */
int hci_conn_switch_role(struct hci_conn *conn, __u8 role)
{
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
if (!role && conn->link_mode & HCI_LM_MASTER)
return 1;
@@ -732,7 +721,7 @@ void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active)
{
struct hci_dev *hdev = conn->hdev;
- BT_DBG("conn %p mode %d", conn, conn->mode);
+ BT_DBG("hcon %p mode %d", conn, conn->mode);
if (test_bit(HCI_RAW, &hdev->flags))
return;
@@ -752,7 +741,7 @@ void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active)
timer:
if (hdev->idle_timeout > 0)
mod_timer(&conn->idle_timer,
- jiffies + msecs_to_jiffies(hdev->idle_timeout));
+ jiffies + msecs_to_jiffies(hdev->idle_timeout));
}
/* Drop all connection on the device */
@@ -802,7 +791,7 @@ EXPORT_SYMBOL(hci_conn_put_device);
int hci_get_conn_list(void __user *arg)
{
- register struct hci_conn *c;
+ struct hci_conn *c;
struct hci_conn_list_req req, *cl;
struct hci_conn_info *ci;
struct hci_dev *hdev;
@@ -906,7 +895,7 @@ struct hci_chan *hci_chan_create(struct hci_conn *conn)
struct hci_dev *hdev = conn->hdev;
struct hci_chan *chan;
- BT_DBG("%s conn %p", hdev->name, conn);
+ BT_DBG("%s hcon %p", hdev->name, conn);
chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL);
if (!chan)
@@ -925,7 +914,7 @@ int hci_chan_del(struct hci_chan *chan)
struct hci_conn *conn = chan->conn;
struct hci_dev *hdev = conn->hdev;
- BT_DBG("%s conn %p chan %p", hdev->name, conn, chan);
+ BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan);
list_del_rcu(&chan->list);
@@ -941,7 +930,7 @@ void hci_chan_list_flush(struct hci_conn *conn)
{
struct hci_chan *chan, *n;
- BT_DBG("conn %p", conn);
+ BT_DBG("hcon %p", conn);
list_for_each_entry_safe(chan, n, &conn->chan_list, list)
hci_chan_del(chan);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 13:49:37 +0000