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-rw-r--r--net/bluetooth/a2mp.c8
-rw-r--r--net/bluetooth/af_bluetooth.c2
-rw-r--r--net/bluetooth/hci_conn.c206
-rw-r--r--net/bluetooth/hci_core.c1193
-rw-r--r--net/bluetooth/hci_event.c478
-rw-r--r--net/bluetooth/hci_sock.c1
-rw-r--r--net/bluetooth/hci_sysfs.c18
-rw-r--r--net/bluetooth/l2cap_core.c616
-rw-r--r--net/bluetooth/l2cap_sock.c62
-rw-r--r--net/bluetooth/mgmt.c913
-rw-r--r--net/bluetooth/rfcomm/core.c92
-rw-r--r--net/bluetooth/rfcomm/sock.c33
-rw-r--r--net/bluetooth/rfcomm/tty.c262
-rw-r--r--net/bluetooth/smp.c418
-rw-r--r--net/bluetooth/smp.h22
15 files changed, 3419 insertions, 905 deletions
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index efcd108822c4..f986b9968bdb 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -235,7 +235,7 @@ static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
BT_DBG("chan %p state %s", chan,
state_to_string(chan->state));
- if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP)
+ if (chan->scid == L2CAP_CID_A2MP)
continue;
l2cap_chan_lock(chan);
@@ -726,7 +726,11 @@ static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked)
BT_DBG("chan %p", chan);
- chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP;
+ chan->chan_type = L2CAP_CHAN_FIXED;
+ chan->scid = L2CAP_CID_A2MP;
+ chan->dcid = L2CAP_CID_A2MP;
+ chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
+ chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
chan->ops = &a2mp_chan_ops;
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 0c5866bb49b6..2021c481cdb6 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -31,7 +31,7 @@
#include <net/bluetooth/bluetooth.h>
#include <linux/proc_fs.h>
-#define VERSION "2.18"
+#define VERSION "2.19"
/* Bluetooth sockets */
#define BT_MAX_PROTO 8
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ba5366c320da..7c713c4675ba 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -225,13 +225,13 @@ 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 = __constant_cpu_to_le16(0x0001);
- cp.max_ce_len = __constant_cpu_to_le16(0x0001);
+ 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_CONN_UPDATE, sizeof(cp), &cp);
}
-void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
+void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
__u8 ltk[16])
{
struct hci_dev *hdev = conn->hdev;
@@ -242,9 +242,9 @@ void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
memset(&cp, 0, sizeof(cp));
cp.handle = cpu_to_le16(conn->handle);
- memcpy(cp.ltk, ltk, sizeof(cp.ltk));
+ cp.rand = rand;
cp.ediv = ediv;
- memcpy(cp.rand, rand, sizeof(cp.rand));
+ memcpy(cp.ltk, ltk, sizeof(cp.ltk));
hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp);
}
@@ -363,6 +363,16 @@ static void hci_conn_auto_accept(struct work_struct *work)
&conn->dst);
}
+static void le_conn_timeout(struct work_struct *work)
+{
+ struct hci_conn *conn = container_of(work, struct hci_conn,
+ le_conn_timeout.work);
+
+ BT_DBG("");
+
+ hci_le_create_connection_cancel(conn);
+}
+
struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
{
struct hci_conn *conn;
@@ -410,6 +420,7 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout);
INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept);
INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle);
+ INIT_DELAYED_WORK(&conn->le_conn_timeout, le_conn_timeout);
atomic_set(&conn->refcnt, 0);
@@ -442,6 +453,8 @@ int hci_conn_del(struct hci_conn *conn)
/* Unacked frames */
hdev->acl_cnt += conn->sent;
} else if (conn->type == LE_LINK) {
+ cancel_delayed_work_sync(&conn->le_conn_timeout);
+
if (hdev->le_pkts)
hdev->le_cnt += conn->sent;
else
@@ -514,6 +527,26 @@ struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src)
}
EXPORT_SYMBOL(hci_get_route);
+/* This function requires the caller holds hdev->lock */
+void hci_le_conn_failed(struct hci_conn *conn, u8 status)
+{
+ struct hci_dev *hdev = conn->hdev;
+
+ conn->state = BT_CLOSED;
+
+ mgmt_connect_failed(hdev, &conn->dst, conn->type, conn->dst_type,
+ status);
+
+ hci_proto_connect_cfm(conn, status);
+
+ hci_conn_del(conn);
+
+ /* Since we may have temporarily stopped the background scanning in
+ * favor of connection establishment, we should restart it.
+ */
+ hci_update_background_scan(hdev);
+}
+
static void create_le_conn_complete(struct hci_dev *hdev, u8 status)
{
struct hci_conn *conn;
@@ -530,55 +563,55 @@ static void create_le_conn_complete(struct hci_dev *hdev, u8 status)
if (!conn)
goto done;
- conn->state = BT_CLOSED;
-
- mgmt_connect_failed(hdev, &conn->dst, conn->type, conn->dst_type,
- status);
-
- hci_proto_connect_cfm(conn, status);
-
- hci_conn_del(conn);
+ hci_le_conn_failed(conn, status);
done:
hci_dev_unlock(hdev);
}
-static int hci_create_le_conn(struct hci_conn *conn)
+static void hci_req_add_le_create_conn(struct hci_request *req,
+ struct hci_conn *conn)
{
- struct hci_dev *hdev = conn->hdev;
struct hci_cp_le_create_conn cp;
- struct hci_request req;
- int err;
-
- hci_req_init(&req, hdev);
+ struct hci_dev *hdev = conn->hdev;
+ u8 own_addr_type;
memset(&cp, 0, sizeof(cp));
+
+ /* Update random address, but set require_privacy to false so
+ * that we never connect with an unresolvable address.
+ */
+ if (hci_update_random_address(req, false, &own_addr_type))
+ return;
+
+ /* Save the address type used for this connnection attempt so we able
+ * to retrieve this information if we need it.
+ */
+ conn->src_type = own_addr_type;
+
cp.scan_interval = cpu_to_le16(hdev->le_scan_interval);
cp.scan_window = cpu_to_le16(hdev->le_scan_window);
bacpy(&cp.peer_addr, &conn->dst);
cp.peer_addr_type = conn->dst_type;
- cp.own_address_type = conn->src_type;
- cp.conn_interval_min = cpu_to_le16(hdev->le_conn_min_interval);
- cp.conn_interval_max = cpu_to_le16(hdev->le_conn_max_interval);
+ cp.own_address_type = own_addr_type;
+ cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
+ cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
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_req_add(&req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
-
- err = hci_req_run(&req, create_le_conn_complete);
- if (err) {
- hci_conn_del(conn);
- return err;
- }
+ hci_req_add(req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
- return 0;
+ conn->state = BT_CONNECT;
}
-static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
- u8 dst_type, u8 sec_level, u8 auth_type)
+struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 dst_type, u8 sec_level, u8 auth_type)
{
+ struct hci_conn_params *params;
struct hci_conn *conn;
+ struct smp_irk *irk;
+ struct hci_request req;
int err;
if (test_bit(HCI_ADVERTISING, &hdev->flags))
@@ -607,35 +640,74 @@ static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
if (conn)
return ERR_PTR(-EBUSY);
+ /* When given an identity address with existing identity
+ * resolving key, the connection needs to be established
+ * to a resolvable random address.
+ *
+ * This uses the cached random resolvable address from
+ * a previous scan. When no cached address is available,
+ * try connecting to the identity address instead.
+ *
+ * Storing the resolvable random address is required here
+ * to handle connection failures. The address will later
+ * be resolved back into the original identity address
+ * from the connect request.
+ */
+ irk = hci_find_irk_by_addr(hdev, dst, dst_type);
+ if (irk && bacmp(&irk->rpa, BDADDR_ANY)) {
+ dst = &irk->rpa;
+ dst_type = ADDR_LE_DEV_RANDOM;
+ }
+
conn = hci_conn_add(hdev, LE_LINK, dst);
if (!conn)
return ERR_PTR(-ENOMEM);
- if (dst_type == BDADDR_LE_PUBLIC)
- conn->dst_type = ADDR_LE_DEV_PUBLIC;
- else
- conn->dst_type = ADDR_LE_DEV_RANDOM;
-
- conn->src_type = hdev->own_addr_type;
+ conn->dst_type = dst_type;
- conn->state = BT_CONNECT;
conn->out = true;
conn->link_mode |= HCI_LM_MASTER;
conn->sec_level = BT_SECURITY_LOW;
conn->pending_sec_level = sec_level;
conn->auth_type = auth_type;
- err = hci_create_le_conn(conn);
- if (err)
+ params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+ if (params) {
+ conn->le_conn_min_interval = params->conn_min_interval;
+ conn->le_conn_max_interval = params->conn_max_interval;
+ } else {
+ conn->le_conn_min_interval = hdev->le_conn_min_interval;
+ conn->le_conn_max_interval = hdev->le_conn_max_interval;
+ }
+
+ hci_req_init(&req, hdev);
+
+ /* If controller is scanning, we stop it since some controllers are
+ * not able to scan and connect at the same time. Also set the
+ * HCI_LE_SCAN_INTERRUPTED flag so that the command complete
+ * handler for scan disabling knows to set the correct discovery
+ * state.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+ hci_req_add_le_scan_disable(&req);
+ set_bit(HCI_LE_SCAN_INTERRUPTED, &hdev->dev_flags);
+ }
+
+ hci_req_add_le_create_conn(&req, conn);
+
+ err = hci_req_run(&req, create_le_conn_complete);
+ if (err) {
+ hci_conn_del(conn);
return ERR_PTR(err);
+ }
done:
hci_conn_hold(conn);
return conn;
}
-static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
- u8 sec_level, u8 auth_type)
+struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
+ u8 sec_level, u8 auth_type)
{
struct hci_conn *acl;
@@ -704,22 +776,6 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
return sco;
}
-/* Create SCO, ACL or LE connection. */
-struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
- __u8 dst_type, __u8 sec_level, __u8 auth_type)
-{
- BT_DBG("%s dst %pMR type 0x%x", hdev->name, dst, type);
-
- switch (type) {
- case LE_LINK:
- return hci_connect_le(hdev, dst, dst_type, sec_level, auth_type);
- case ACL_LINK:
- return hci_connect_acl(hdev, dst, sec_level, auth_type);
- }
-
- return ERR_PTR(-EINVAL);
-}
-
/* Check link security requirement */
int hci_conn_check_link_mode(struct hci_conn *conn)
{
@@ -800,14 +856,23 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
if (!(conn->link_mode & HCI_LM_AUTH))
goto auth;
- /* An authenticated combination key has sufficient security for any
- security level. */
- if (conn->key_type == HCI_LK_AUTH_COMBINATION)
+ /* An authenticated FIPS approved combination key has sufficient
+ * security for security level 4. */
+ if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256 &&
+ sec_level == BT_SECURITY_FIPS)
+ goto encrypt;
+
+ /* An authenticated combination key has sufficient security for
+ security level 3. */
+ if ((conn->key_type == HCI_LK_AUTH_COMBINATION_P192 ||
+ conn->key_type == HCI_LK_AUTH_COMBINATION_P256) &&
+ sec_level == BT_SECURITY_HIGH)
goto encrypt;
/* An unauthenticated combination key has sufficient security for
security level 1 and 2. */
- if (conn->key_type == HCI_LK_UNAUTH_COMBINATION &&
+ if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 ||
+ conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) &&
(sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW))
goto encrypt;
@@ -816,7 +881,8 @@ 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_MEDIUM || sec_level == BT_SECURITY_LOW ||
+ conn->pin_length == 16))
goto encrypt;
auth:
@@ -840,13 +906,17 @@ int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level)
{
BT_DBG("hcon %p", conn);
- if (sec_level != BT_SECURITY_HIGH)
- return 1; /* Accept if non-secure is required */
+ /* Accept if non-secure or higher security level is required */
+ if (sec_level != BT_SECURITY_HIGH && sec_level != BT_SECURITY_FIPS)
+ return 1;
- if (conn->sec_level == BT_SECURITY_HIGH)
+ /* Accept if secure or higher security level is already present */
+ if (conn->sec_level == BT_SECURITY_HIGH ||
+ conn->sec_level == BT_SECURITY_FIPS)
return 1;
- return 0; /* Reject not secure link */
+ /* Reject not secure link */
+ return 0;
}
EXPORT_SYMBOL(hci_conn_check_secure);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 5e8663c194c1..8bbfdea9cbec 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -29,11 +29,14 @@
#include <linux/idr.h>
#include <linux/rfkill.h>
#include <linux/debugfs.h>
+#include <linux/crypto.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
+#include "smp.h"
+
static void hci_rx_work(struct work_struct *work);
static void hci_cmd_work(struct work_struct *work);
static void hci_tx_work(struct work_struct *work);
@@ -285,24 +288,6 @@ static const struct file_operations link_keys_fops = {
.release = single_release,
};
-static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct hci_dev *hdev = file->private_data;
- char buf[3];
-
- buf[0] = test_bit(HCI_DEBUG_KEYS, &hdev->dev_flags) ? 'Y': 'N';
- buf[1] = '\n';
- buf[2] = '\0';
- return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
-}
-
-static const struct file_operations use_debug_keys_fops = {
- .open = simple_open,
- .read = use_debug_keys_read,
- .llseek = default_llseek,
-};
-
static int dev_class_show(struct seq_file *f, void *ptr)
{
struct hci_dev *hdev = f->private;
@@ -415,6 +400,70 @@ static int ssp_debug_mode_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops, ssp_debug_mode_get,
ssp_debug_mode_set, "%llu\n");
+static ssize_t force_sc_support_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hci_dev *hdev = file->private_data;
+ char buf[3];
+
+ buf[0] = test_bit(HCI_FORCE_SC, &hdev->dev_flags) ? 'Y': 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static ssize_t force_sc_support_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hci_dev *hdev = file->private_data;
+ char buf[32];
+ size_t buf_size = min(count, (sizeof(buf)-1));
+ bool enable;
+
+ if (test_bit(HCI_UP, &hdev->flags))
+ return -EBUSY;
+
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+ if (strtobool(buf, &enable))
+ return -EINVAL;
+
+ if (enable == test_bit(HCI_FORCE_SC, &hdev->dev_flags))
+ return -EALREADY;
+
+ change_bit(HCI_FORCE_SC, &hdev->dev_flags);
+
+ return count;
+}
+
+static const struct file_operations force_sc_support_fops = {
+ .open = simple_open,
+ .read = force_sc_support_read,
+ .write = force_sc_support_write,
+ .llseek = default_llseek,
+};
+
+static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hci_dev *hdev = file->private_data;
+ char buf[3];
+
+ buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static const struct file_operations sc_only_mode_fops = {
+ .open = simple_open,
+ .read = sc_only_mode_read,
+ .llseek = default_llseek,
+};
+
static int idle_timeout_set(void *data, u64 val)
{
struct hci_dev *hdev = data;
@@ -443,6 +492,37 @@ static int idle_timeout_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
idle_timeout_set, "%llu\n");
+static int rpa_timeout_set(void *data, u64 val)
+{
+ struct hci_dev *hdev = data;
+
+ /* Require the RPA timeout to be at least 30 seconds and at most
+ * 24 hours.
+ */
+ if (val < 30 || val > (60 * 60 * 24))
+ return -EINVAL;
+
+ hci_dev_lock(hdev);
+ hdev->rpa_timeout = val;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int rpa_timeout_get(void *data, u64 *val)
+{
+ struct hci_dev *hdev = data;
+
+ hci_dev_lock(hdev);
+ *val = hdev->rpa_timeout;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
+ rpa_timeout_set, "%llu\n");
+
static int sniff_min_interval_set(void *data, u64 val)
{
struct hci_dev *hdev = data;
@@ -499,6 +579,59 @@ static int sniff_max_interval_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
sniff_max_interval_set, "%llu\n");
+static int identity_show(struct seq_file *f, void *p)
+{
+ struct hci_dev *hdev = f->private;
+ bdaddr_t addr;
+ u8 addr_type;
+
+ hci_dev_lock(hdev);
+
+ hci_copy_identity_address(hdev, &addr, &addr_type);
+
+ seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
+ 16, hdev->irk, &hdev->rpa);
+
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int identity_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, identity_show, inode->i_private);
+}
+
+static const struct file_operations identity_fops = {
+ .open = identity_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int random_address_show(struct seq_file *f, void *p)
+{
+ struct hci_dev *hdev = f->private;
+
+ hci_dev_lock(hdev);
+ seq_printf(f, "%pMR\n", &hdev->random_addr);
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int random_address_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, random_address_show, inode->i_private);
+}
+
+static const struct file_operations random_address_fops = {
+ .open = random_address_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static int static_address_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
@@ -522,33 +655,107 @@ static const struct file_operations static_address_fops = {
.release = single_release,
};
-static int own_address_type_set(void *data, u64 val)
+static ssize_t force_static_address_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
{
- struct hci_dev *hdev = data;
+ struct hci_dev *hdev = file->private_data;
+ char buf[3];
- if (val != 0 && val != 1)
+ buf[0] = test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ? 'Y': 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static ssize_t force_static_address_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hci_dev *hdev = file->private_data;
+ char buf[32];
+ size_t buf_size = min(count, (sizeof(buf)-1));
+ bool enable;
+
+ if (test_bit(HCI_UP, &hdev->flags))
+ return -EBUSY;
+
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+ if (strtobool(buf, &enable))
return -EINVAL;
+ if (enable == test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags))
+ return -EALREADY;
+
+ change_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags);
+
+ return count;
+}
+
+static const struct file_operations force_static_address_fops = {
+ .open = simple_open,
+ .read = force_static_address_read,
+ .write = force_static_address_write,
+ .llseek = default_llseek,
+};
+
+static int white_list_show(struct seq_file *f, void *ptr)
+{
+ struct hci_dev *hdev = f->private;
+ struct bdaddr_list *b;
+
hci_dev_lock(hdev);
- hdev->own_addr_type = val;
+ list_for_each_entry(b, &hdev->le_white_list, list)
+ seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
hci_dev_unlock(hdev);
return 0;
}
-static int own_address_type_get(void *data, u64 *val)
+static int white_list_open(struct inode *inode, struct file *file)
{
- struct hci_dev *hdev = data;
+ return single_open(file, white_list_show, inode->i_private);
+}
+
+static const struct file_operations white_list_fops = {
+ .open = white_list_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
+{
+ struct hci_dev *hdev = f->private;
+ struct list_head *p, *n;
hci_dev_lock(hdev);
- *val = hdev->own_addr_type;
+ list_for_each_safe(p, n, &hdev->identity_resolving_keys) {
+ struct smp_irk *irk = list_entry(p, struct smp_irk, list);
+ seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
+ &irk->bdaddr, irk->addr_type,
+ 16, irk->val, &irk->rpa);
+ }
hci_dev_unlock(hdev);
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(own_address_type_fops, own_address_type_get,
- own_address_type_set, "%llu\n");
+static int identity_resolving_keys_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, identity_resolving_keys_show,
+ inode->i_private);
+}
+
+static const struct file_operations identity_resolving_keys_fops = {
+ .open = identity_resolving_keys_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
static int long_term_keys_show(struct seq_file *f, void *ptr)
{
@@ -556,12 +763,12 @@ static int long_term_keys_show(struct seq_file *f, void *ptr)
struct list_head *p, *n;
hci_dev_lock(hdev);
- list_for_each_safe(p, n, &hdev->link_keys) {
+ list_for_each_safe(p, n, &hdev->long_term_keys) {
struct smp_ltk *ltk = list_entry(p, struct smp_ltk, list);
- seq_printf(f, "%pMR (type %u) %u %u %u %.4x %*phN %*phN\\n",
+ seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
&ltk->bdaddr, ltk->bdaddr_type, ltk->authenticated,
ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
- 8, ltk->rand, 16, ltk->val);
+ __le64_to_cpu(ltk->rand), 16, ltk->val);
}
hci_dev_unlock(hdev);
@@ -636,6 +843,34 @@ static int conn_max_interval_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
conn_max_interval_set, "%llu\n");
+static int adv_channel_map_set(void *data, u64 val)
+{
+ struct hci_dev *hdev = data;
+
+ if (val < 0x01 || val > 0x07)
+ return -EINVAL;
+
+ hci_dev_lock(hdev);
+ hdev->le_adv_channel_map = val;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int adv_channel_map_get(void *data, u64 *val)
+{
+ struct hci_dev *hdev = data;
+
+ hci_dev_lock(hdev);
+ *val = hdev->le_adv_channel_map;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
+ adv_channel_map_set, "%llu\n");
+
static ssize_t lowpan_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -679,6 +914,115 @@ static const struct file_operations lowpan_debugfs_fops = {
.llseek = default_llseek,
};
+static int le_auto_conn_show(struct seq_file *sf, void *ptr)
+{
+ struct hci_dev *hdev = sf->private;
+ struct hci_conn_params *p;
+
+ hci_dev_lock(hdev);
+
+ list_for_each_entry(p, &hdev->le_conn_params, list) {
+ seq_printf(sf, "%pMR %u %u\n", &p->addr, p->addr_type,
+ p->auto_connect);
+ }
+
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int le_auto_conn_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, le_auto_conn_show, inode->i_private);
+}
+
+static ssize_t le_auto_conn_write(struct file *file, const char __user *data,
+ size_t count, loff_t *offset)
+{
+ struct seq_file *sf = file->private_data;
+ struct hci_dev *hdev = sf->private;
+ u8 auto_connect = 0;
+ bdaddr_t addr;
+ u8 addr_type;
+ char *buf;
+ int err = 0;
+ int n;
+
+ /* Don't allow partial write */
+ if (*offset != 0)
+ return -EINVAL;
+
+ if (count < 3)
+ return -EINVAL;
+
+ buf = kzalloc(count, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (copy_from_user(buf, data, count)) {
+ err = -EFAULT;
+ goto done;
+ }
+
+ if (memcmp(buf, "add", 3) == 0) {
+ n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu",
+ &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2],
+ &addr.b[1], &addr.b[0], &addr_type,
+ &auto_connect);
+
+ if (n < 7) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ hci_dev_lock(hdev);
+ err = hci_conn_params_add(hdev, &addr, addr_type, auto_connect,
+ hdev->le_conn_min_interval,
+ hdev->le_conn_max_interval);
+ hci_dev_unlock(hdev);
+
+ if (err)
+ goto done;
+ } else if (memcmp(buf, "del", 3) == 0) {
+ n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu",
+ &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2],
+ &addr.b[1], &addr.b[0], &addr_type);
+
+ if (n < 7) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ hci_dev_lock(hdev);
+ hci_conn_params_del(hdev, &addr, addr_type);
+ hci_dev_unlock(hdev);
+ } else if (memcmp(buf, "clr", 3) == 0) {
+ hci_dev_lock(hdev);
+ hci_conn_params_clear(hdev);
+ hci_pend_le_conns_clear(hdev);
+ hci_update_background_scan(hdev);
+ hci_dev_unlock(hdev);
+ } else {
+ err = -EINVAL;
+ }
+
+done:
+ kfree(buf);
+
+ if (err)
+ return err;
+ else
+ return count;
+}
+
+static const struct file_operations le_auto_conn_fops = {
+ .open = le_auto_conn_open,
+ .read = seq_read,
+ .write = le_auto_conn_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/* ---- HCI requests ---- */
static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
@@ -1027,14 +1371,17 @@ static void le_setup(struct hci_request *req)
/* Read LE Local Supported Features */
hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL);
+ /* Read LE Supported States */
+ hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
+
/* Read LE Advertising Channel TX Power */
hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
/* Read LE White List Size */
hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL);
- /* Read LE Supported States */
- hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
+ /* Clear LE White List */
+ hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL);
/* LE-only controllers have LE implicitly enabled */
if (!lmp_bredr_capable(hdev))
@@ -1288,6 +1635,10 @@ static void hci_set_event_mask_page_2(struct hci_request *req)
events[2] |= 0x08; /* Truncated Page Complete */
}
+ /* Enable Authenticated Payload Timeout Expired event if supported */
+ if (lmp_ping_capable(hdev))
+ events[2] |= 0x80;
+
hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events);
}
@@ -1322,21 +1673,8 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
if (hdev->commands[5] & 0x10)
hci_setup_link_policy(req);
- if (lmp_le_capable(hdev)) {
- if (test_bit(HCI_SETUP, &hdev->dev_flags)) {
- /* If the controller has a public BD_ADDR, then
- * by default use that one. If this is a LE only
- * controller without a public address, default
- * to the random address.
- */
- if (bacmp(&hdev->bdaddr, BDADDR_ANY))
- hdev->own_addr_type = ADDR_LE_DEV_PUBLIC;
- else
- hdev->own_addr_type = ADDR_LE_DEV_RANDOM;
- }
-
+ if (lmp_le_capable(hdev))
hci_set_le_support(req);
- }
/* Read features beyond page 1 if available */
for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
@@ -1359,6 +1697,15 @@ static void hci_init4_req(struct hci_request *req, unsigned long opt)
/* Check for Synchronization Train support */
if (lmp_sync_train_capable(hdev))
hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL);
+
+ /* Enable Secure Connections if supported and configured */
+ if ((lmp_sc_capable(hdev) ||
+ test_bit(HCI_FORCE_SC, &hdev->dev_flags)) &&
+ test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) {
+ u8 support = 0x01;
+ hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT,
+ sizeof(support), &support);
+ }
}
static int __hci_init(struct hci_dev *hdev)
@@ -1417,8 +1764,6 @@ static int __hci_init(struct hci_dev *hdev)
hdev, &inquiry_cache_fops);
debugfs_create_file("link_keys", 0400, hdev->debugfs,
hdev, &link_keys_fops);
- debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
- hdev, &use_debug_keys_fops);
debugfs_create_file("dev_class", 0444, hdev->debugfs,
hdev, &dev_class_fops);
debugfs_create_file("voice_setting", 0444, hdev->debugfs,
@@ -1430,6 +1775,10 @@ static int __hci_init(struct hci_dev *hdev)
hdev, &auto_accept_delay_fops);
debugfs_create_file("ssp_debug_mode", 0644, hdev->debugfs,
hdev, &ssp_debug_mode_fops);
+ debugfs_create_file("force_sc_support", 0644, hdev->debugfs,
+ hdev, &force_sc_support_fops);
+ debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
+ hdev, &sc_only_mode_fops);
}
if (lmp_sniff_capable(hdev)) {
@@ -1442,20 +1791,43 @@ static int __hci_init(struct hci_dev *hdev)
}
if (lmp_le_capable(hdev)) {
+ debugfs_create_file("identity", 0400, hdev->debugfs,
+ hdev, &identity_fops);
+ debugfs_create_file("rpa_timeout", 0644, hdev->debugfs,
+ hdev, &rpa_timeout_fops);
+ debugfs_create_file("random_address", 0444, hdev->debugfs,
+ hdev, &random_address_fops);
+ debugfs_create_file("static_address", 0444, hdev->debugfs,
+ hdev, &static_address_fops);
+
+ /* For controllers with a public address, provide a debug
+ * option to force the usage of the configured static
+ * address. By default the public address is used.
+ */
+ if (bacmp(&hdev->bdaddr, BDADDR_ANY))
+ debugfs_create_file("force_static_address", 0644,
+ hdev->debugfs, hdev,
+ &force_static_address_fops);
+
debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
&hdev->le_white_list_size);
- debugfs_create_file("static_address", 0444, hdev->debugfs,
- hdev, &static_address_fops);
- debugfs_create_file("own_address_type", 0644, hdev->debugfs,
- hdev, &own_address_type_fops);
+ debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
+ &white_list_fops);
+ debugfs_create_file("identity_resolving_keys", 0400,
+ hdev->debugfs, hdev,
+ &identity_resolving_keys_fops);
debugfs_create_file("long_term_keys", 0400, hdev->debugfs,
hdev, &long_term_keys_fops);
debugfs_create_file("conn_min_interval", 0644, hdev->debugfs,
hdev, &conn_min_interval_fops);
debugfs_create_file("conn_max_interval", 0644, hdev->debugfs,
hdev, &conn_max_interval_fops);
+ debugfs_create_file("adv_channel_map", 0644, hdev->debugfs,
+ hdev, &adv_channel_map_fops);
debugfs_create_file("6lowpan", 0644, hdev->debugfs, hdev,
&lowpan_debugfs_fops);
+ debugfs_create_file("le_auto_conn", 0644, hdev->debugfs, hdev,
+ &le_auto_conn_fops);
}
return 0;
@@ -1548,6 +1920,8 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
switch (state) {
case DISCOVERY_STOPPED:
+ hci_update_background_scan(hdev);
+
if (hdev->discovery.state != DISCOVERY_STARTING)
mgmt_discovering(hdev, 0);
break;
@@ -1876,10 +2250,15 @@ static int hci_dev_do_open(struct hci_dev *hdev)
* be able to determine if there is a public address
* or not.
*
+ * In case of user channel usage, it is not important
+ * if a public address or static random address is
+ * available.
+ *
* This check is only valid for BR/EDR controllers
* since AMP controllers do not have an address.
*/
- if (hdev->dev_type == HCI_BREDR &&
+ if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) &&
+ hdev->dev_type == HCI_BREDR &&
!bacmp(&hdev->bdaddr, BDADDR_ANY) &&
!bacmp(&hdev->static_addr, BDADDR_ANY)) {
ret = -EADDRNOTAVAIL;
@@ -1916,6 +2295,7 @@ static int hci_dev_do_open(struct hci_dev *hdev)
if (!ret) {
hci_dev_hold(hdev);
+ set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
set_bit(HCI_UP, &hdev->flags);
hci_notify(hdev, HCI_DEV_UP);
if (!test_bit(HCI_SETUP, &hdev->dev_flags) &&
@@ -2014,9 +2394,13 @@ static int hci_dev_do_close(struct hci_dev *hdev)
cancel_delayed_work_sync(&hdev->le_scan_disable);
+ if (test_bit(HCI_MGMT, &hdev->dev_flags))
+ cancel_delayed_work_sync(&hdev->rpa_expired);
+
hci_dev_lock(hdev);
hci_inquiry_cache_flush(hdev);
hci_conn_hash_flush(hdev);
+ hci_pend_le_conns_clear(hdev);
hci_dev_unlock(hdev);
hci_notify(hdev, HCI_DEV_DOWN);
@@ -2074,6 +2458,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
memset(hdev->eir, 0, sizeof(hdev->eir));
memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
+ bacpy(&hdev->random_addr, BDADDR_ANY);
hci_req_unlock(hdev);
@@ -2437,7 +2822,7 @@ static void hci_discov_off(struct work_struct *work)
mgmt_discoverable_timeout(hdev);
}
-int hci_uuids_clear(struct hci_dev *hdev)
+void hci_uuids_clear(struct hci_dev *hdev)
{
struct bt_uuid *uuid, *tmp;
@@ -2445,11 +2830,9 @@ int hci_uuids_clear(struct hci_dev *hdev)
list_del(&uuid->list);
kfree(uuid);
}
-
- return 0;
}
-int hci_link_keys_clear(struct hci_dev *hdev)
+void hci_link_keys_clear(struct hci_dev *hdev)
{
struct list_head *p, *n;
@@ -2461,11 +2844,9 @@ int hci_link_keys_clear(struct hci_dev *hdev)
list_del(p);
kfree(key);
}
-
- return 0;
}
-int hci_smp_ltks_clear(struct hci_dev *hdev)
+void hci_smp_ltks_clear(struct hci_dev *hdev)
{
struct smp_ltk *k, *tmp;
@@ -2473,8 +2854,16 @@ int hci_smp_ltks_clear(struct hci_dev *hdev)
list_del(&k->list);
kfree(k);
}
+}
- return 0;
+void hci_smp_irks_clear(struct hci_dev *hdev)
+{
+ struct smp_irk *k, *tmp;
+
+ list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) {
+ list_del(&k->list);
+ kfree(k);
+ }
}
struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
@@ -2524,13 +2913,24 @@ static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
return false;
}
-struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8])
+static bool ltk_type_master(u8 type)
+{
+ if (type == HCI_SMP_STK || type == HCI_SMP_LTK)
+ return true;
+
+ return false;
+}
+
+struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
+ bool master)
{
struct smp_ltk *k;
list_for_each_entry(k, &hdev->long_term_keys, list) {
- if (k->ediv != ediv ||
- memcmp(rand, k->rand, sizeof(k->rand)))
+ if (k->ediv != ediv || k->rand != rand)
+ continue;
+
+ if (ltk_type_master(k->type) != master)
continue;
return k;
@@ -2540,18 +2940,56 @@ struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8])
}
struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
- u8 addr_type)
+ u8 addr_type, bool master)
{
struct smp_ltk *k;
list_for_each_entry(k, &hdev->long_term_keys, list)
if (addr_type == k->bdaddr_type &&
- bacmp(bdaddr, &k->bdaddr) == 0)
+ bacmp(bdaddr, &k->bdaddr) == 0 &&
+ ltk_type_master(k->type) == master)
return k;
return NULL;
}
+struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa)
+{
+ struct smp_irk *irk;
+
+ list_for_each_entry(irk, &hdev->identity_resolving_keys, list) {
+ if (!bacmp(&irk->rpa, rpa))
+ return irk;
+ }
+
+ list_for_each_entry(irk, &hdev->identity_resolving_keys, list) {
+ if (smp_irk_matches(hdev->tfm_aes, irk->val, rpa)) {
+ bacpy(&irk->rpa, rpa);
+ return irk;
+ }
+ }
+
+ return NULL;
+}
+
+struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 addr_type)
+{
+ struct smp_irk *irk;
+
+ /* Identity Address must be public or static random */
+ if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0)
+ return NULL;
+
+ list_for_each_entry(irk, &hdev->identity_resolving_keys, list) {
+ if (addr_type == irk->addr_type &&
+ bacmp(bdaddr, &irk->bdaddr) == 0)
+ return irk;
+ }
+
+ return NULL;
+}
+
int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len)
{
@@ -2565,7 +3003,7 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
key = old_key;
} else {
old_key_type = conn ? conn->key_type : 0xff;
- key = kzalloc(sizeof(*key), GFP_ATOMIC);
+ key = kzalloc(sizeof(*key), GFP_KERNEL);
if (!key)
return -ENOMEM;
list_add(&key->list, &hdev->link_keys);
@@ -2605,22 +3043,20 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
return 0;
}
-int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
- int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16
- ediv, u8 rand[8])
+struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 addr_type, u8 type, u8 authenticated,
+ u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand)
{
struct smp_ltk *key, *old_key;
+ bool master = ltk_type_master(type);
- if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK))
- return 0;
-
- old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type);
+ old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, master);
if (old_key)
key = old_key;
else {
- key = kzalloc(sizeof(*key), GFP_ATOMIC);
+ key = kzalloc(sizeof(*key), GFP_KERNEL);
if (!key)
- return -ENOMEM;
+ return NULL;
list_add(&key->list, &hdev->long_term_keys);
}
@@ -2629,17 +3065,34 @@ int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
memcpy(key->val, tk, sizeof(key->val));
key->authenticated = authenticated;
key->ediv = ediv;
+ key->rand = rand;
key->enc_size = enc_size;
key->type = type;
- memcpy(key->rand, rand, sizeof(key->rand));
- if (!new_key)
- return 0;
+ return key;
+}
+
+struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 addr_type, u8 val[16], bdaddr_t *rpa)
+{
+ struct smp_irk *irk;
- if (type & HCI_SMP_LTK)
- mgmt_new_ltk(hdev, key, 1);
+ irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type);
+ if (!irk) {
+ irk = kzalloc(sizeof(*irk), GFP_KERNEL);
+ if (!irk)
+ return NULL;
- return 0;
+ bacpy(&irk->bdaddr, bdaddr);
+ irk->addr_type = addr_type;
+
+ list_add(&irk->list, &hdev->identity_resolving_keys);
+ }
+
+ memcpy(irk->val, val, 16);
+ bacpy(&irk->rpa, rpa);
+
+ return irk;
}
int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
@@ -2658,21 +3111,38 @@ int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
return 0;
}
-int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr)
+int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type)
{
struct smp_ltk *k, *tmp;
+ int removed = 0;
list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) {
- if (bacmp(bdaddr, &k->bdaddr))
+ if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type)
continue;
BT_DBG("%s removing %pMR", hdev->name, bdaddr);
list_del(&k->list);
kfree(k);
+ removed++;
}
- return 0;
+ return removed ? 0 : -ENOENT;
+}
+
+void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type)
+{
+ struct smp_irk *k, *tmp;
+
+ list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) {
+ if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type)
+ continue;
+
+ BT_DBG("%s removing %pMR", hdev->name, bdaddr);
+
+ list_del(&k->list);
+ kfree(k);
+ }
}
/* HCI command timer function */
@@ -2721,7 +3191,7 @@ int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr)
return 0;
}
-int hci_remote_oob_data_clear(struct hci_dev *hdev)
+void hci_remote_oob_data_clear(struct hci_dev *hdev)
{
struct oob_data *data, *n;
@@ -2729,19 +3199,43 @@ int hci_remote_oob_data_clear(struct hci_dev *hdev)
list_del(&data->list);
kfree(data);
}
+}
+
+int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 *hash, u8 *randomizer)
+{
+ struct oob_data *data;
+
+ data = hci_find_remote_oob_data(hdev, bdaddr);
+ if (!data) {
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ bacpy(&data->bdaddr, bdaddr);
+ list_add(&data->list, &hdev->remote_oob_data);
+ }
+
+ memcpy(data->hash192, hash, sizeof(data->hash192));
+ memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192));
+
+ memset(data->hash256, 0, sizeof(data->hash256));
+ memset(data->randomizer256, 0, sizeof(data->randomizer256));
+
+ BT_DBG("%s for %pMR", hdev->name, bdaddr);
return 0;
}
-int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
- u8 *randomizer)
+int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 *hash192, u8 *randomizer192,
+ u8 *hash256, u8 *randomizer256)
{
struct oob_data *data;
data = hci_find_remote_oob_data(hdev, bdaddr);
-
if (!data) {
- data = kmalloc(sizeof(*data), GFP_ATOMIC);
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@@ -2749,8 +3243,11 @@ int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
list_add(&data->list, &hdev->remote_oob_data);
}
- memcpy(data->hash, hash, sizeof(data->hash));
- memcpy(data->randomizer, randomizer, sizeof(data->randomizer));
+ memcpy(data->hash192, hash192, sizeof(data->hash192));
+ memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192));
+
+ memcpy(data->hash256, hash256, sizeof(data->hash256));
+ memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256));
BT_DBG("%s for %pMR", hdev->name, bdaddr);
@@ -2770,7 +3267,7 @@ struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
return NULL;
}
-int hci_blacklist_clear(struct hci_dev *hdev)
+static void hci_blacklist_clear(struct hci_dev *hdev)
{
struct list_head *p, *n;
@@ -2780,8 +3277,6 @@ int hci_blacklist_clear(struct hci_dev *hdev)
list_del(p);
kfree(b);
}
-
- return 0;
}
int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
@@ -2810,8 +3305,10 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
{
struct bdaddr_list *entry;
- if (!bacmp(bdaddr, BDADDR_ANY))
- return hci_blacklist_clear(hdev);
+ if (!bacmp(bdaddr, BDADDR_ANY)) {
+ hci_blacklist_clear(hdev);
+ return 0;
+ }
entry = hci_blacklist_lookup(hdev, bdaddr, type);
if (!entry)
@@ -2823,6 +3320,262 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
return mgmt_device_unblocked(hdev, bdaddr, type);
}
+struct bdaddr_list *hci_white_list_lookup(struct hci_dev *hdev,
+ bdaddr_t *bdaddr, u8 type)
+{
+ struct bdaddr_list *b;
+
+ list_for_each_entry(b, &hdev->le_white_list, list) {
+ if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type)
+ return b;
+ }
+
+ return NULL;
+}
+
+void hci_white_list_clear(struct hci_dev *hdev)
+{
+ struct list_head *p, *n;
+
+ list_for_each_safe(p, n, &hdev->le_white_list) {
+ struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list);
+
+ list_del(p);
+ kfree(b);
+ }
+}
+
+int hci_white_list_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
+{
+ struct bdaddr_list *entry;
+
+ if (!bacmp(bdaddr, BDADDR_ANY))
+ return -EBADF;
+
+ entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ bacpy(&entry->bdaddr, bdaddr);
+ entry->bdaddr_type = type;
+
+ list_add(&entry->list, &hdev->le_white_list);
+
+ return 0;
+}
+
+int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
+{
+ struct bdaddr_list *entry;
+
+ if (!bacmp(bdaddr, BDADDR_ANY))
+ return -EBADF;
+
+ entry = hci_white_list_lookup(hdev, bdaddr, type);
+ if (!entry)
+ return -ENOENT;
+
+ list_del(&entry->list);
+ kfree(entry);
+
+ return 0;
+}
+
+/* This function requires the caller holds hdev->lock */
+struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
+ bdaddr_t *addr, u8 addr_type)
+{
+ struct hci_conn_params *params;
+
+ list_for_each_entry(params, &hdev->le_conn_params, list) {
+ if (bacmp(&params->addr, addr) == 0 &&
+ params->addr_type == addr_type) {
+ return params;
+ }
+ }
+
+ return NULL;
+}
+
+static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
+{
+ struct hci_conn *conn;
+
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
+ if (!conn)
+ return false;
+
+ if (conn->dst_type != type)
+ return false;
+
+ if (conn->state != BT_CONNECTED)
+ return false;
+
+ return true;
+}
+
+static bool is_identity_address(bdaddr_t *addr, u8 addr_type)
+{
+ if (addr_type == ADDR_LE_DEV_PUBLIC)
+ return true;
+
+ /* Check for Random Static address type */
+ if ((addr->b[5] & 0xc0) == 0xc0)
+ return true;
+
+ return false;
+}
+
+/* This function requires the caller holds hdev->lock */
+int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
+ u8 auto_connect, u16 conn_min_interval,
+ u16 conn_max_interval)
+{
+ struct hci_conn_params *params;
+
+ if (!is_identity_address(addr, addr_type))
+ return -EINVAL;
+
+ params = hci_conn_params_lookup(hdev, addr, addr_type);
+ if (params)
+ goto update;
+
+ params = kzalloc(sizeof(*params), GFP_KERNEL);
+ if (!params) {
+ BT_ERR("Out of memory");
+ return -ENOMEM;
+ }
+
+ bacpy(&params->addr, addr);
+ params->addr_type = addr_type;
+
+ list_add(&params->list, &hdev->le_conn_params);
+
+update:
+ params->conn_min_interval = conn_min_interval;
+ params->conn_max_interval = conn_max_interval;
+ params->auto_connect = auto_connect;
+
+ switch (auto_connect) {
+ case HCI_AUTO_CONN_DISABLED:
+ case HCI_AUTO_CONN_LINK_LOSS:
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+ break;
+ case HCI_AUTO_CONN_ALWAYS:
+ if (!is_connected(hdev, addr, addr_type))
+ hci_pend_le_conn_add(hdev, addr, addr_type);
+ break;
+ }
+
+ BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x "
+ "conn_max_interval 0x%.4x", addr, addr_type, auto_connect,
+ conn_min_interval, conn_max_interval);
+
+ return 0;
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
+{
+ struct hci_conn_params *params;
+
+ params = hci_conn_params_lookup(hdev, addr, addr_type);
+ if (!params)
+ return;
+
+ hci_pend_le_conn_del(hdev, addr, addr_type);
+
+ list_del(&params->list);
+ kfree(params);
+
+ BT_DBG("addr %pMR (type %u)", addr, addr_type);
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_conn_params_clear(struct hci_dev *hdev)
+{
+ struct hci_conn_params *params, *tmp;
+
+ list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) {
+ list_del(&params->list);
+ kfree(params);
+ }
+
+ BT_DBG("All LE connection parameters were removed");
+}
+
+/* This function requires the caller holds hdev->lock */
+struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev,
+ bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ list_for_each_entry(entry, &hdev->pend_le_conns, list) {
+ if (bacmp(&entry->bdaddr, addr) == 0 &&
+ entry->bdaddr_type == addr_type)
+ return entry;
+ }
+
+ return NULL;
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
+ if (entry)
+ goto done;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry) {
+ BT_ERR("Out of memory");
+ return;
+ }
+
+ bacpy(&entry->bdaddr, addr);
+ entry->bdaddr_type = addr_type;
+
+ list_add(&entry->list, &hdev->pend_le_conns);
+
+ BT_DBG("addr %pMR (type %u)", addr, addr_type);
+
+done:
+ hci_update_background_scan(hdev);
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
+{
+ struct bdaddr_list *entry;
+
+ entry = hci_pend_le_conn_lookup(hdev, addr, addr_type);
+ if (!entry)
+ goto done;
+
+ list_del(&entry->list);
+ kfree(entry);
+
+ BT_DBG("addr %pMR (type %u)", addr, addr_type);
+
+done:
+ hci_update_background_scan(hdev);
+}
+
+/* This function requires the caller holds hdev->lock */
+void hci_pend_le_conns_clear(struct hci_dev *hdev)
+{
+ struct bdaddr_list *entry, *tmp;
+
+ list_for_each_entry_safe(entry, tmp, &hdev->pend_le_conns, list) {
+ list_del(&entry->list);
+ kfree(entry);
+ }
+
+ BT_DBG("All LE pending connections cleared");
+}
+
static void inquiry_complete(struct hci_dev *hdev, u8 status)
{
if (status) {
@@ -2882,7 +3635,6 @@ static void le_scan_disable_work(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev,
le_scan_disable.work);
- struct hci_cp_le_set_scan_enable cp;
struct hci_request req;
int err;
@@ -2890,15 +3642,128 @@ static void le_scan_disable_work(struct work_struct *work)
hci_req_init(&req, hdev);
- memset(&cp, 0, sizeof(cp));
- cp.enable = LE_SCAN_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+ hci_req_add_le_scan_disable(&req);
err = hci_req_run(&req, le_scan_disable_work_complete);
if (err)
BT_ERR("Disable LE scanning request failed: err %d", err);
}
+static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
+{
+ struct hci_dev *hdev = req->hdev;
+
+ /* If we're advertising or initiating an LE connection we can't
+ * go ahead and change the random address at this time. This is
+ * because the eventual initiator address used for the
+ * subsequently created connection will be undefined (some
+ * controllers use the new address and others the one we had
+ * when the operation started).
+ *
+ * In this kind of scenario skip the update and let the random
+ * address be updated at the next cycle.
+ */
+ if (test_bit(HCI_ADVERTISING, &hdev->dev_flags) ||
+ hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) {
+ BT_DBG("Deferring random address update");
+ return;
+ }
+
+ hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa);
+}
+
+int hci_update_random_address(struct hci_request *req, bool require_privacy,
+ u8 *own_addr_type)
+{
+ struct hci_dev *hdev = req->hdev;
+ int err;
+
+ /* If privacy is enabled use a resolvable private address. If
+ * current RPA has expired or there is something else than
+ * the current RPA in use, then generate a new one.
+ */
+ if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) {
+ int to;
+
+ *own_addr_type = ADDR_LE_DEV_RANDOM;
+
+ if (!test_and_clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags) &&
+ !bacmp(&hdev->random_addr, &hdev->rpa))
+ return 0;
+
+ err = smp_generate_rpa(hdev->tfm_aes, hdev->irk, &hdev->rpa);
+ if (err < 0) {
+ BT_ERR("%s failed to generate new RPA", hdev->name);
+ return err;
+ }
+
+ set_random_addr(req, &hdev->rpa);
+
+ to = msecs_to_jiffies(hdev->rpa_timeout * 1000);
+ queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to);
+
+ return 0;
+ }
+
+ /* In case of required privacy without resolvable private address,
+ * use an unresolvable private address. This is useful for active
+ * scanning and non-connectable advertising.
+ */
+ if (require_privacy) {
+ bdaddr_t urpa;
+
+ get_random_bytes(&urpa, 6);
+ urpa.b[5] &= 0x3f; /* Clear two most significant bits */
+
+ *own_addr_type = ADDR_LE_DEV_RANDOM;
+ set_random_addr(req, &urpa);
+ return 0;
+ }
+
+ /* If forcing static address is in use or there is no public
+ * address use the static address as random address (but skip
+ * the HCI command if the current random address is already the
+ * static one.
+ */
+ if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ||
+ !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
+ *own_addr_type = ADDR_LE_DEV_RANDOM;
+ if (bacmp(&hdev->static_addr, &hdev->random_addr))
+ hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6,
+ &hdev->static_addr);
+ return 0;
+ }
+
+ /* Neither privacy nor static address is being used so use a
+ * public address.
+ */
+ *own_addr_type = ADDR_LE_DEV_PUBLIC;
+
+ return 0;
+}
+
+/* Copy the Identity Address of the controller.
+ *
+ * If the controller has a public BD_ADDR, then by default use that one.
+ * If this is a LE only controller without a public address, default to
+ * the static random address.
+ *
+ * For debugging purposes it is possible to force controllers with a
+ * public address to use the static random address instead.
+ */
+void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 *bdaddr_type)
+{
+ if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ||
+ !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
+ bacpy(bdaddr, &hdev->static_addr);
+ *bdaddr_type = ADDR_LE_DEV_RANDOM;
+ } else {
+ bacpy(bdaddr, &hdev->bdaddr);
+ *bdaddr_type = ADDR_LE_DEV_PUBLIC;
+ }
+}
+
/* Alloc HCI device */
struct hci_dev *hci_alloc_dev(void)
{
@@ -2919,11 +3784,14 @@ struct hci_dev *hci_alloc_dev(void)
hdev->sniff_max_interval = 800;
hdev->sniff_min_interval = 80;
+ hdev->le_adv_channel_map = 0x07;
hdev->le_scan_interval = 0x0060;
hdev->le_scan_window = 0x0030;
hdev->le_conn_min_interval = 0x0028;
hdev->le_conn_max_interval = 0x0038;
+ hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT;
+
mutex_init(&hdev->lock);
mutex_init(&hdev->req_lock);
@@ -2932,7 +3800,11 @@ struct hci_dev *hci_alloc_dev(void)
INIT_LIST_HEAD(&hdev->uuids);
INIT_LIST_HEAD(&hdev->link_keys);
INIT_LIST_HEAD(&hdev->long_term_keys);
+ INIT_LIST_HEAD(&hdev->identity_resolving_keys);
INIT_LIST_HEAD(&hdev->remote_oob_data);
+ INIT_LIST_HEAD(&hdev->le_white_list);
+ INIT_LIST_HEAD(&hdev->le_conn_params);
+ INIT_LIST_HEAD(&hdev->pend_le_conns);
INIT_LIST_HEAD(&hdev->conn_hash.list);
INIT_WORK(&hdev->rx_work, hci_rx_work);
@@ -3017,9 +3889,18 @@ int hci_register_dev(struct hci_dev *hdev)
dev_set_name(&hdev->dev, "%s", hdev->name);
+ hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(hdev->tfm_aes)) {
+ BT_ERR("Unable to create crypto context");
+ error = PTR_ERR(hdev->tfm_aes);
+ hdev->tfm_aes = NULL;
+ goto err_wqueue;
+ }
+
error = device_add(&hdev->dev);
if (error < 0)
- goto err_wqueue;
+ goto err_tfm;
hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev,
RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops,
@@ -3055,6 +3936,8 @@ int hci_register_dev(struct hci_dev *hdev)
return id;
+err_tfm:
+ crypto_free_blkcipher(hdev->tfm_aes);
err_wqueue:
destroy_workqueue(hdev->workqueue);
destroy_workqueue(hdev->req_workqueue);
@@ -3105,6 +3988,9 @@ void hci_unregister_dev(struct hci_dev *hdev)
rfkill_destroy(hdev->rfkill);
}
+ if (hdev->tfm_aes)
+ crypto_free_blkcipher(hdev->tfm_aes);
+
device_del(&hdev->dev);
debugfs_remove_recursive(hdev->debugfs);
@@ -3117,7 +4003,11 @@ void hci_unregister_dev(struct hci_dev *hdev)
hci_uuids_clear(hdev);
hci_link_keys_clear(hdev);
hci_smp_ltks_clear(hdev);
+ hci_smp_irks_clear(hdev);
hci_remote_oob_data_clear(hdev);
+ hci_white_list_clear(hdev);
+ hci_conn_params_clear(hdev);
+ hci_pend_le_conns_clear(hdev);
hci_dev_unlock(hdev);
hci_dev_put(hdev);
@@ -4345,3 +5235,102 @@ static void hci_cmd_work(struct work_struct *work)
}
}
}
+
+void hci_req_add_le_scan_disable(struct hci_request *req)
+{
+ struct hci_cp_le_set_scan_enable cp;
+
+ memset(&cp, 0, sizeof(cp));
+ cp.enable = LE_SCAN_DISABLE;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+}
+
+void hci_req_add_le_passive_scan(struct hci_request *req)
+{
+ struct hci_cp_le_set_scan_param param_cp;
+ struct hci_cp_le_set_scan_enable enable_cp;
+ struct hci_dev *hdev = req->hdev;
+ u8 own_addr_type;
+
+ /* Set require_privacy to true to avoid identification from
+ * unknown peer devices. Since this is passive scanning, no
+ * SCAN_REQ using the local identity should be sent. Mandating
+ * privacy is just an extra precaution.
+ */
+ if (hci_update_random_address(req, true, &own_addr_type))
+ return;
+
+ memset(&param_cp, 0, sizeof(param_cp));
+ param_cp.type = LE_SCAN_PASSIVE;
+ param_cp.interval = cpu_to_le16(hdev->le_scan_interval);
+ param_cp.window = cpu_to_le16(hdev->le_scan_window);
+ param_cp.own_address_type = own_addr_type;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+ &param_cp);
+
+ memset(&enable_cp, 0, sizeof(enable_cp));
+ enable_cp.enable = LE_SCAN_ENABLE;
+ enable_cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+ &enable_cp);
+}
+
+static void update_background_scan_complete(struct hci_dev *hdev, u8 status)
+{
+ if (status)
+ BT_DBG("HCI request failed to update background scanning: "
+ "status 0x%2.2x", status);
+}
+
+/* This function controls the background scanning based on hdev->pend_le_conns
+ * list. If there are pending LE connection we start the background scanning,
+ * otherwise we stop it.
+ *
+ * This function requires the caller holds hdev->lock.
+ */
+void hci_update_background_scan(struct hci_dev *hdev)
+{
+ struct hci_request req;
+ struct hci_conn *conn;
+ int err;
+
+ hci_req_init(&req, hdev);
+
+ if (list_empty(&hdev->pend_le_conns)) {
+ /* If there is no pending LE connections, we should stop
+ * the background scanning.
+ */
+
+ /* If controller is not scanning we are done. */
+ if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ return;
+
+ hci_req_add_le_scan_disable(&req);
+
+ BT_DBG("%s stopping background scanning", hdev->name);
+ } else {
+ /* If there is at least one pending LE connection, we should
+ * keep the background scan running.
+ */
+
+ /* If controller is already scanning we are done. */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ return;
+
+ /* If controller is connecting, we should not start scanning
+ * since some controllers are not able to scan and connect at
+ * the same time.
+ */
+ conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
+ if (conn)
+ return;
+
+ hci_req_add_le_passive_scan(&req);
+
+ BT_DBG("%s starting background scanning", hdev->name);
+ }
+
+ err = hci_req_run(&req, update_background_scan_complete);
+ if (err)
+ BT_ERR("Failed to run HCI request: err %d", err);
+}
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 5f812455a450..c3b0a08f5ab4 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -461,6 +461,34 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
}
}
+static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ u8 status = *((u8 *) skb->data);
+ struct hci_cp_write_sc_support *sent;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
+ if (!sent)
+ return;
+
+ if (!status) {
+ if (sent->support)
+ hdev->features[1][0] |= LMP_HOST_SC;
+ else
+ hdev->features[1][0] &= ~LMP_HOST_SC;
+ }
+
+ if (test_bit(HCI_MGMT, &hdev->dev_flags))
+ mgmt_sc_enable_complete(hdev, sent->support, status);
+ else if (!status) {
+ if (sent->support)
+ set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
+ else
+ clear_bit(HCI_SC_ENABLED, &hdev->dev_flags);
+ }
+}
+
static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_rp_read_local_version *rp = (void *) skb->data;
@@ -904,16 +932,50 @@ static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
hci_dev_unlock(hdev);
}
-static void hci_cc_read_local_oob_data_reply(struct hci_dev *hdev,
- struct sk_buff *skb)
+static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
+ struct sk_buff *skb)
{
struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
hci_dev_lock(hdev);
- mgmt_read_local_oob_data_reply_complete(hdev, rp->hash,
- rp->randomizer, rp->status);
+ mgmt_read_local_oob_data_complete(hdev, rp->hash, rp->randomizer,
+ NULL, NULL, rp->status);
+ hci_dev_unlock(hdev);
+}
+
+static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
+
+ hci_dev_lock(hdev);
+ mgmt_read_local_oob_data_complete(hdev, rp->hash192, rp->randomizer192,
+ rp->hash256, rp->randomizer256,
+ rp->status);
+ hci_dev_unlock(hdev);
+}
+
+
+static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ __u8 status = *((__u8 *) skb->data);
+ bdaddr_t *sent;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
+ if (!sent)
+ return;
+
+ hci_dev_lock(hdev);
+
+ if (!status)
+ bacpy(&hdev->random_addr, sent);
+
hci_dev_unlock(hdev);
}
@@ -929,12 +991,8 @@ static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
hci_dev_lock(hdev);
- if (!status) {
- if (*sent)
- set_bit(HCI_ADVERTISING, &hdev->dev_flags);
- else
- clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
- }
+ if (!status)
+ mgmt_advertising(hdev, *sent);
hci_dev_unlock(hdev);
}
@@ -960,7 +1018,19 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
break;
case LE_SCAN_DISABLE:
+ /* Cancel this timer so that we don't try to disable scanning
+ * when it's already disabled.
+ */
+ cancel_delayed_work(&hdev->le_scan_disable);
+
clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
+ /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
+ * interrupted scanning due to a connect request. Mark
+ * therefore discovery as stopped.
+ */
+ if (test_and_clear_bit(HCI_LE_SCAN_INTERRUPTED,
+ &hdev->dev_flags))
+ hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
break;
default:
@@ -980,6 +1050,49 @@ static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
hdev->le_white_list_size = rp->size;
}
+static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ __u8 status = *((__u8 *) skb->data);
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ if (!status)
+ hci_white_list_clear(hdev);
+}
+
+static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_cp_le_add_to_white_list *sent;
+ __u8 status = *((__u8 *) skb->data);
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
+ if (!sent)
+ return;
+
+ if (!status)
+ hci_white_list_add(hdev, &sent->bdaddr, sent->bdaddr_type);
+}
+
+static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_cp_le_del_from_white_list *sent;
+ __u8 status = *((__u8 *) skb->data);
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
+ if (!sent)
+ return;
+
+ if (!status)
+ hci_white_list_del(hdev, &sent->bdaddr, sent->bdaddr_type);
+}
+
static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
struct sk_buff *skb)
{
@@ -1020,6 +1133,25 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
}
}
+static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_cp_le_set_adv_param *cp;
+ u8 status = *((u8 *) skb->data);
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ if (status)
+ return;
+
+ cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
+ if (!cp)
+ return;
+
+ hci_dev_lock(hdev);
+ hdev->adv_addr_type = cp->own_address_type;
+ hci_dev_unlock(hdev);
+}
+
static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev,
struct sk_buff *skb)
{
@@ -1185,9 +1317,12 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
return 0;
/* Only request authentication for SSP connections or non-SSP
- * devices with sec_level HIGH or if MITM protection is requested */
+ * devices with sec_level MEDIUM or HIGH or if MITM protection
+ * is requested.
+ */
if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
- conn->pending_sec_level != BT_SECURITY_HIGH)
+ conn->pending_sec_level != BT_SECURITY_HIGH &&
+ conn->pending_sec_level != BT_SECURITY_MEDIUM)
return 0;
return 1;
@@ -1518,6 +1653,57 @@ static void hci_cs_accept_phylink(struct hci_dev *hdev, u8 status)
amp_write_remote_assoc(hdev, cp->phy_handle);
}
+static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
+{
+ struct hci_cp_le_create_conn *cp;
+ struct hci_conn *conn;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ /* All connection failure handling is taken care of by the
+ * hci_le_conn_failed function which is triggered by the HCI
+ * request completion callbacks used for connecting.
+ */
+ if (status)
+ return;
+
+ cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
+ if (!cp)
+ return;
+
+ hci_dev_lock(hdev);
+
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->peer_addr);
+ if (!conn)
+ goto unlock;
+
+ /* Store the initiator and responder address information which
+ * is needed for SMP. These values will not change during the
+ * lifetime of the connection.
+ */
+ conn->init_addr_type = cp->own_address_type;
+ if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
+ bacpy(&conn->init_addr, &hdev->random_addr);
+ else
+ bacpy(&conn->init_addr, &hdev->bdaddr);
+
+ conn->resp_addr_type = cp->peer_addr_type;
+ bacpy(&conn->resp_addr, &cp->peer_addr);
+
+ /* We don't want the connection attempt to stick around
+ * indefinitely since LE doesn't have a page timeout concept
+ * like BR/EDR. Set a timer for any connection that doesn't use
+ * the white list for connecting.
+ */
+ if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
+ queue_delayed_work(conn->hdev->workqueue,
+ &conn->le_conn_timeout,
+ HCI_LE_CONN_TIMEOUT);
+
+unlock:
+ hci_dev_unlock(hdev);
+}
+
static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
__u8 status = *((__u8 *) skb->data);
@@ -1659,7 +1845,7 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
} else {
conn->state = BT_CLOSED;
if (conn->type == ACL_LINK)
- mgmt_connect_failed(hdev, &ev->bdaddr, conn->type,
+ mgmt_connect_failed(hdev, &conn->dst, conn->type,
conn->dst_type, ev->status);
}
@@ -1780,7 +1966,9 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_disconn_complete *ev = (void *) skb->data;
u8 reason = hci_to_mgmt_reason(ev->reason);
+ struct hci_conn_params *params;
struct hci_conn *conn;
+ bool mgmt_connected;
u8 type;
BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
@@ -1799,13 +1987,30 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn->state = BT_CLOSED;
- if (test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
- mgmt_device_disconnected(hdev, &conn->dst, conn->type,
- conn->dst_type, reason);
+ mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
+ mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
+ reason, mgmt_connected);
if (conn->type == ACL_LINK && conn->flush_key)
hci_remove_link_key(hdev, &conn->dst);
+ params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+ if (params) {
+ switch (params->auto_connect) {
+ case HCI_AUTO_CONN_LINK_LOSS:
+ if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
+ break;
+ /* Fall through */
+
+ case HCI_AUTO_CONN_ALWAYS:
+ hci_pend_le_conn_add(hdev, &conn->dst, conn->dst_type);
+ break;
+
+ default:
+ break;
+ }
+ }
+
type = conn->type;
hci_proto_disconn_cfm(conn, ev->reason);
@@ -1943,35 +2148,46 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
- if (conn) {
- if (!ev->status) {
- if (ev->encrypt) {
- /* Encryption implies authentication */
- conn->link_mode |= HCI_LM_AUTH;
- conn->link_mode |= HCI_LM_ENCRYPT;
- conn->sec_level = conn->pending_sec_level;
- } else
- conn->link_mode &= ~HCI_LM_ENCRYPT;
- }
+ if (!conn)
+ goto unlock;
- clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
+ if (!ev->status) {
+ if (ev->encrypt) {
+ /* Encryption implies authentication */
+ conn->link_mode |= HCI_LM_AUTH;
+ conn->link_mode |= HCI_LM_ENCRYPT;
+ conn->sec_level = conn->pending_sec_level;
- if (ev->status && conn->state == BT_CONNECTED) {
- hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
- hci_conn_drop(conn);
- goto unlock;
+ /* P-256 authentication key implies FIPS */
+ if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
+ conn->link_mode |= HCI_LM_FIPS;
+
+ if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
+ conn->type == LE_LINK)
+ set_bit(HCI_CONN_AES_CCM, &conn->flags);
+ } else {
+ conn->link_mode &= ~HCI_LM_ENCRYPT;
+ clear_bit(HCI_CONN_AES_CCM, &conn->flags);
}
+ }
- if (conn->state == BT_CONFIG) {
- if (!ev->status)
- conn->state = BT_CONNECTED;
+ clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
- hci_proto_connect_cfm(conn, ev->status);
- hci_conn_drop(conn);
- } else
- hci_encrypt_cfm(conn, ev->status, ev->encrypt);
+ if (ev->status && conn->state == BT_CONNECTED) {
+ hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
+ hci_conn_drop(conn);
+ goto unlock;
}
+ if (conn->state == BT_CONFIG) {
+ if (!ev->status)
+ conn->state = BT_CONNECTED;
+
+ hci_proto_connect_cfm(conn, ev->status);
+ hci_conn_drop(conn);
+ } else
+ hci_encrypt_cfm(conn, ev->status, ev->encrypt);
+
unlock:
hci_dev_unlock(hdev);
}
@@ -2144,6 +2360,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_write_ssp_mode(hdev, skb);
break;
+ case HCI_OP_WRITE_SC_SUPPORT:
+ hci_cc_write_sc_support(hdev, skb);
+ break;
+
case HCI_OP_READ_LOCAL_VERSION:
hci_cc_read_local_version(hdev, skb);
break;
@@ -2213,7 +2433,11 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
break;
case HCI_OP_READ_LOCAL_OOB_DATA:
- hci_cc_read_local_oob_data_reply(hdev, skb);
+ hci_cc_read_local_oob_data(hdev, skb);
+ break;
+
+ case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
+ hci_cc_read_local_oob_ext_data(hdev, skb);
break;
case HCI_OP_LE_READ_BUFFER_SIZE:
@@ -2244,6 +2468,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_user_passkey_neg_reply(hdev, skb);
break;
+ case HCI_OP_LE_SET_RANDOM_ADDR:
+ hci_cc_le_set_random_addr(hdev, skb);
+ break;
+
case HCI_OP_LE_SET_ADV_ENABLE:
hci_cc_le_set_adv_enable(hdev, skb);
break;
@@ -2256,6 +2484,18 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_le_read_white_list_size(hdev, skb);
break;
+ case HCI_OP_LE_CLEAR_WHITE_LIST:
+ hci_cc_le_clear_white_list(hdev, skb);
+ break;
+
+ case HCI_OP_LE_ADD_TO_WHITE_LIST:
+ hci_cc_le_add_to_white_list(hdev, skb);
+ break;
+
+ case HCI_OP_LE_DEL_FROM_WHITE_LIST:
+ hci_cc_le_del_from_white_list(hdev, skb);
+ break;
+
case HCI_OP_LE_READ_SUPPORTED_STATES:
hci_cc_le_read_supported_states(hdev, skb);
break;
@@ -2264,6 +2504,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_write_le_host_supported(hdev, skb);
break;
+ case HCI_OP_LE_SET_ADV_PARAM:
+ hci_cc_set_adv_param(hdev, skb);
+ break;
+
case HCI_OP_WRITE_REMOTE_AMP_ASSOC:
hci_cc_write_remote_amp_assoc(hdev, skb);
break;
@@ -2351,6 +2595,10 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cs_accept_phylink(hdev, ev->status);
break;
+ case HCI_OP_LE_CREATE_CONN:
+ hci_cs_le_create_conn(hdev, ev->status);
+ break;
+
default:
BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode);
break;
@@ -2630,7 +2878,8 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (conn) {
- if (key->type == HCI_LK_UNAUTH_COMBINATION &&
+ if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
+ key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
BT_DBG("%s ignoring unauthenticated key", hdev->name);
goto not_found;
@@ -2844,6 +3093,9 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev,
* features do not indicate SSP support */
clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
}
+
+ if (ev->features[0] & LMP_HOST_SC)
+ set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
}
if (conn->state != BT_CONFIG)
@@ -3337,20 +3589,36 @@ static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
data = hci_find_remote_oob_data(hdev, &ev->bdaddr);
if (data) {
- struct hci_cp_remote_oob_data_reply cp;
+ if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) {
+ struct hci_cp_remote_oob_ext_data_reply cp;
- bacpy(&cp.bdaddr, &ev->bdaddr);
- memcpy(cp.hash, data->hash, sizeof(cp.hash));
- memcpy(cp.randomizer, data->randomizer, sizeof(cp.randomizer));
+ bacpy(&cp.bdaddr, &ev->bdaddr);
+ memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
+ memcpy(cp.randomizer192, data->randomizer192,
+ sizeof(cp.randomizer192));
+ memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
+ memcpy(cp.randomizer256, data->randomizer256,
+ sizeof(cp.randomizer256));
+
+ hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
+ sizeof(cp), &cp);
+ } else {
+ struct hci_cp_remote_oob_data_reply cp;
+
+ bacpy(&cp.bdaddr, &ev->bdaddr);
+ memcpy(cp.hash, data->hash192, sizeof(cp.hash));
+ memcpy(cp.randomizer, data->randomizer192,
+ sizeof(cp.randomizer));
- hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, sizeof(cp),
- &cp);
+ hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
+ sizeof(cp), &cp);
+ }
} else {
struct hci_cp_remote_oob_data_neg_reply cp;
bacpy(&cp.bdaddr, &ev->bdaddr);
- hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, sizeof(cp),
- &cp);
+ hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
+ sizeof(cp), &cp);
}
unlock:
@@ -3484,6 +3752,7 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_le_conn_complete *ev = (void *) skb->data;
struct hci_conn *conn;
+ struct smp_irk *irk;
BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
@@ -3514,19 +3783,70 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn->out = true;
conn->link_mode |= HCI_LM_MASTER;
}
+
+ /* If we didn't have a hci_conn object previously
+ * but we're in master role this must be something
+ * initiated using a white list. Since white list based
+ * connections are not "first class citizens" we don't
+ * have full tracking of them. Therefore, we go ahead
+ * with a "best effort" approach of determining the
+ * initiator address based on the HCI_PRIVACY flag.
+ */
+ if (conn->out) {
+ conn->resp_addr_type = ev->bdaddr_type;
+ bacpy(&conn->resp_addr, &ev->bdaddr);
+ if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) {
+ conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+ bacpy(&conn->init_addr, &hdev->rpa);
+ } else {
+ hci_copy_identity_address(hdev,
+ &conn->init_addr,
+ &conn->init_addr_type);
+ }
+ } else {
+ /* Set the responder (our side) address type based on
+ * the advertising address type.
+ */
+ conn->resp_addr_type = hdev->adv_addr_type;
+ if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
+ bacpy(&conn->resp_addr, &hdev->random_addr);
+ else
+ bacpy(&conn->resp_addr, &hdev->bdaddr);
+
+ conn->init_addr_type = ev->bdaddr_type;
+ bacpy(&conn->init_addr, &ev->bdaddr);
+ }
+ } else {
+ cancel_delayed_work(&conn->le_conn_timeout);
+ }
+
+ /* Ensure that the hci_conn contains the identity address type
+ * regardless of which address the connection was made with.
+ */
+ hci_copy_identity_address(hdev, &conn->src, &conn->src_type);
+
+ /* Lookup the identity address from the stored connection
+ * address and address type.
+ *
+ * When establishing connections to an identity address, the
+ * connection procedure will store the resolvable random
+ * address first. Now if it can be converted back into the
+ * identity address, start using the identity address from
+ * now on.
+ */
+ irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
+ if (irk) {
+ bacpy(&conn->dst, &irk->bdaddr);
+ conn->dst_type = irk->addr_type;
}
if (ev->status) {
- mgmt_connect_failed(hdev, &conn->dst, conn->type,
- conn->dst_type, ev->status);
- hci_proto_connect_cfm(conn, ev->status);
- conn->state = BT_CLOSED;
- hci_conn_del(conn);
+ hci_le_conn_failed(conn, ev->status);
goto unlock;
}
if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
- mgmt_device_connected(hdev, &ev->bdaddr, conn->type,
+ mgmt_device_connected(hdev, &conn->dst, conn->type,
conn->dst_type, 0, NULL, 0, NULL);
conn->sec_level = BT_SECURITY_LOW;
@@ -3540,25 +3860,73 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_proto_connect_cfm(conn, ev->status);
+ hci_pend_le_conn_del(hdev, &conn->dst, conn->dst_type);
+
unlock:
hci_dev_unlock(hdev);
}
+/* This function requires the caller holds hdev->lock */
+static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr,
+ u8 addr_type)
+{
+ struct hci_conn *conn;
+ struct smp_irk *irk;
+
+ /* If this is a resolvable address, we should resolve it and then
+ * update address and address type variables.
+ */
+ irk = hci_get_irk(hdev, addr, addr_type);
+ if (irk) {
+ addr = &irk->bdaddr;
+ addr_type = irk->addr_type;
+ }
+
+ if (!hci_pend_le_conn_lookup(hdev, addr, addr_type))
+ return;
+
+ conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
+ HCI_AT_NO_BONDING);
+ if (!IS_ERR(conn))
+ return;
+
+ switch (PTR_ERR(conn)) {
+ case -EBUSY:
+ /* If hci_connect() returns -EBUSY it means there is already
+ * an LE connection attempt going on. Since controllers don't
+ * support more than one connection attempt at the time, we
+ * don't consider this an error case.
+ */
+ break;
+ default:
+ BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
+ }
+}
+
static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
u8 num_reports = skb->data[0];
void *ptr = &skb->data[1];
s8 rssi;
+ hci_dev_lock(hdev);
+
while (num_reports--) {
struct hci_ev_le_advertising_info *ev = ptr;
+ if (ev->evt_type == LE_ADV_IND ||
+ ev->evt_type == LE_ADV_DIRECT_IND)
+ check_pending_le_conn(hdev, &ev->bdaddr,
+ ev->bdaddr_type);
+
rssi = ev->data[ev->length];
mgmt_device_found(hdev, &ev->bdaddr, LE_LINK, ev->bdaddr_type,
NULL, rssi, 0, 1, ev->data, ev->length);
ptr += sizeof(*ev) + ev->length + 1;
}
+
+ hci_dev_unlock(hdev);
}
static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
@@ -3577,7 +3945,7 @@ static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
if (conn == NULL)
goto not_found;
- ltk = hci_find_ltk(hdev, ev->ediv, ev->random);
+ ltk = hci_find_ltk(hdev, ev->ediv, ev->rand, conn->out);
if (ltk == NULL)
goto not_found;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 7552f9e3089c..68e51a84e72d 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -716,6 +716,7 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
err = hci_dev_open(hdev->id);
if (err) {
clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags);
+ mgmt_index_added(hdev);
hci_dev_put(hdev);
goto done;
}
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 0b61250cfdf9..555982a78a58 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -49,14 +49,7 @@ static struct attribute *bt_link_attrs[] = {
NULL
};
-static struct attribute_group bt_link_group = {
- .attrs = bt_link_attrs,
-};
-
-static const struct attribute_group *bt_link_groups[] = {
- &bt_link_group,
- NULL
-};
+ATTRIBUTE_GROUPS(bt_link);
static void bt_link_release(struct device *dev)
{
@@ -182,14 +175,7 @@ static struct attribute *bt_host_attrs[] = {
NULL
};
-static struct attribute_group bt_host_group = {
- .attrs = bt_host_attrs,
-};
-
-static const struct attribute_group *bt_host_groups[] = {
- &bt_host_group,
- NULL
-};
+ATTRIBUTE_GROUPS(bt_host);
static void bt_host_release(struct device *dev)
{
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index b0ad2c752d73..9ed2168fa59f 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -42,6 +42,8 @@
#include "amp.h"
#include "6lowpan.h"
+#define LE_FLOWCTL_MAX_CREDITS 65535
+
bool disable_ertm;
static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN | L2CAP_FEAT_UCD;
@@ -330,44 +332,20 @@ static inline bool l2cap_seq_list_contains(struct l2cap_seq_list *seq_list,
return seq_list->list[seq & seq_list->mask] != L2CAP_SEQ_LIST_CLEAR;
}
-static u16 l2cap_seq_list_remove(struct l2cap_seq_list *seq_list, u16 seq)
+static inline u16 l2cap_seq_list_pop(struct l2cap_seq_list *seq_list)
{
+ u16 seq = seq_list->head;
u16 mask = seq_list->mask;
- if (seq_list->head == L2CAP_SEQ_LIST_CLEAR) {
- /* In case someone tries to pop the head of an empty list */
- return L2CAP_SEQ_LIST_CLEAR;
- } else if (seq_list->head == seq) {
- /* Head can be removed in constant time */
- seq_list->head = seq_list->list[seq & mask];
- seq_list->list[seq & mask] = L2CAP_SEQ_LIST_CLEAR;
-
- if (seq_list->head == L2CAP_SEQ_LIST_TAIL) {
- seq_list->head = L2CAP_SEQ_LIST_CLEAR;
- seq_list->tail = L2CAP_SEQ_LIST_CLEAR;
- }
- } else {
- /* Walk the list to find the sequence number */
- u16 prev = seq_list->head;
- while (seq_list->list[prev & mask] != seq) {
- prev = seq_list->list[prev & mask];
- if (prev == L2CAP_SEQ_LIST_TAIL)
- return L2CAP_SEQ_LIST_CLEAR;
- }
+ seq_list->head = seq_list->list[seq & mask];
+ seq_list->list[seq & mask] = L2CAP_SEQ_LIST_CLEAR;
- /* Unlink the number from the list and clear it */
- seq_list->list[prev & mask] = seq_list->list[seq & mask];
- seq_list->list[seq & mask] = L2CAP_SEQ_LIST_CLEAR;
- if (seq_list->tail == seq)
- seq_list->tail = prev;
+ if (seq_list->head == L2CAP_SEQ_LIST_TAIL) {
+ seq_list->head = L2CAP_SEQ_LIST_CLEAR;
+ seq_list->tail = L2CAP_SEQ_LIST_CLEAR;
}
- return seq;
-}
-static inline u16 l2cap_seq_list_pop(struct l2cap_seq_list *seq_list)
-{
- /* Remove the head in constant time */
- return l2cap_seq_list_remove(seq_list, seq_list->head);
+ return seq;
}
static void l2cap_seq_list_clear(struct l2cap_seq_list *seq_list)
@@ -506,7 +484,7 @@ static void l2cap_le_flowctl_init(struct l2cap_chan *chan)
chan->sdu_len = 0;
chan->tx_credits = 0;
chan->rx_credits = le_max_credits;
- chan->mps = min_t(u16, chan->imtu, L2CAP_LE_DEFAULT_MPS);
+ chan->mps = min_t(u16, chan->imtu, le_default_mps);
skb_queue_head_init(&chan->tx_q);
}
@@ -522,18 +500,10 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
switch (chan->chan_type) {
case L2CAP_CHAN_CONN_ORIENTED:
- if (conn->hcon->type == LE_LINK) {
- if (chan->dcid == L2CAP_CID_ATT) {
- chan->omtu = L2CAP_DEFAULT_MTU;
- chan->scid = L2CAP_CID_ATT;
- } else {
- chan->scid = l2cap_alloc_cid(conn);
- }
- } else {
- /* Alloc CID for connection-oriented socket */
- chan->scid = l2cap_alloc_cid(conn);
+ /* Alloc CID for connection-oriented socket */
+ chan->scid = l2cap_alloc_cid(conn);
+ if (conn->hcon->type == ACL_LINK)
chan->omtu = L2CAP_DEFAULT_MTU;
- }
break;
case L2CAP_CHAN_CONN_LESS:
@@ -543,11 +513,8 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
chan->omtu = L2CAP_DEFAULT_MTU;
break;
- case L2CAP_CHAN_CONN_FIX_A2MP:
- chan->scid = L2CAP_CID_A2MP;
- chan->dcid = L2CAP_CID_A2MP;
- chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
- chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
+ case L2CAP_CHAN_FIXED:
+ /* Caller will set CID and CID specific MTU values */
break;
default:
@@ -595,7 +562,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
chan->conn = NULL;
- if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP)
+ if (chan->scid != L2CAP_CID_A2MP)
hci_conn_drop(conn->hcon);
if (mgr && mgr->bredr_chan == chan)
@@ -642,6 +609,23 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
return;
}
+void l2cap_conn_update_id_addr(struct hci_conn *hcon)
+{
+ struct l2cap_conn *conn = hcon->l2cap_data;
+ struct l2cap_chan *chan;
+
+ mutex_lock(&conn->chan_lock);
+
+ list_for_each_entry(chan, &conn->chan_l, list) {
+ l2cap_chan_lock(chan);
+ bacpy(&chan->dst, &hcon->dst);
+ chan->dst_type = bdaddr_type(hcon, hcon->dst_type);
+ l2cap_chan_unlock(chan);
+ }
+
+ mutex_unlock(&conn->chan_lock);
+}
+
static void l2cap_chan_le_connect_reject(struct l2cap_chan *chan)
{
struct l2cap_conn *conn = chan->conn;
@@ -699,10 +683,7 @@ void l2cap_chan_close(struct l2cap_chan *chan, int reason)
case BT_CONNECTED:
case BT_CONFIG:
- /* ATT uses L2CAP_CHAN_CONN_ORIENTED so we must also
- * check for chan->psm.
- */
- if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED && chan->psm) {
+ if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED) {
__set_chan_timer(chan, chan->ops->get_sndtimeo(chan));
l2cap_send_disconn_req(chan, reason);
} else
@@ -737,6 +718,7 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
case L2CAP_CHAN_RAW:
switch (chan->sec_level) {
case BT_SECURITY_HIGH:
+ case BT_SECURITY_FIPS:
return HCI_AT_DEDICATED_BONDING_MITM;
case BT_SECURITY_MEDIUM:
return HCI_AT_DEDICATED_BONDING;
@@ -749,7 +731,8 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
if (chan->sec_level == BT_SECURITY_LOW)
chan->sec_level = BT_SECURITY_SDP;
}
- if (chan->sec_level == BT_SECURITY_HIGH)
+ if (chan->sec_level == BT_SECURITY_HIGH ||
+ chan->sec_level == BT_SECURITY_FIPS)
return HCI_AT_NO_BONDING_MITM;
else
return HCI_AT_NO_BONDING;
@@ -759,7 +742,8 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
if (chan->sec_level == BT_SECURITY_LOW)
chan->sec_level = BT_SECURITY_SDP;
- if (chan->sec_level == BT_SECURITY_HIGH)
+ if (chan->sec_level == BT_SECURITY_HIGH ||
+ chan->sec_level == BT_SECURITY_FIPS)
return HCI_AT_NO_BONDING_MITM;
else
return HCI_AT_NO_BONDING;
@@ -768,6 +752,7 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
default:
switch (chan->sec_level) {
case BT_SECURITY_HIGH:
+ case BT_SECURITY_FIPS:
return HCI_AT_GENERAL_BONDING_MITM;
case BT_SECURITY_MEDIUM:
return HCI_AT_GENERAL_BONDING;
@@ -1330,7 +1315,7 @@ static void l2cap_send_disconn_req(struct l2cap_chan *chan, int err)
__clear_ack_timer(chan);
}
- if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) {
+ if (chan->scid == L2CAP_CID_A2MP) {
l2cap_state_change(chan, BT_DISCONN);
return;
}
@@ -1493,8 +1478,6 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
if (!chan)
goto clean;
- chan->dcid = L2CAP_CID_ATT;
-
bacpy(&chan->src, &hcon->src);
bacpy(&chan->dst, &hcon->dst);
chan->src_type = bdaddr_type(hcon, hcon->src_type);
@@ -1528,7 +1511,7 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
l2cap_chan_lock(chan);
- if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) {
+ if (chan->scid == L2CAP_CID_A2MP) {
l2cap_chan_unlock(chan);
continue;
}
@@ -1546,6 +1529,8 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
}
mutex_unlock(&conn->chan_lock);
+
+ queue_work(hcon->hdev->workqueue, &conn->pending_rx_work);
}
/* Notify sockets that we cannot guaranty reliability anymore */
@@ -1671,6 +1656,9 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
kfree_skb(conn->rx_skb);
+ skb_queue_purge(&conn->pending_rx);
+ flush_work(&conn->pending_rx_work);
+
l2cap_unregister_all_users(conn);
mutex_lock(&conn->chan_lock);
@@ -1718,66 +1706,6 @@ static void security_timeout(struct work_struct *work)
}
}
-static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
-{
- struct l2cap_conn *conn = hcon->l2cap_data;
- struct hci_chan *hchan;
-
- if (conn)
- return conn;
-
- hchan = hci_chan_create(hcon);
- if (!hchan)
- return NULL;
-
- conn = kzalloc(sizeof(struct l2cap_conn), GFP_KERNEL);
- if (!conn) {
- hci_chan_del(hchan);
- return NULL;
- }
-
- kref_init(&conn->ref);
- hcon->l2cap_data = conn;
- conn->hcon = hcon;
- hci_conn_get(conn->hcon);
- conn->hchan = hchan;
-
- BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
-
- switch (hcon->type) {
- case LE_LINK:
- if (hcon->hdev->le_mtu) {
- conn->mtu = hcon->hdev->le_mtu;
- break;
- }
- /* fall through */
- default:
- conn->mtu = hcon->hdev->acl_mtu;
- break;
- }
-
- conn->feat_mask = 0;
-
- if (hcon->type == ACL_LINK)
- conn->hs_enabled = test_bit(HCI_HS_ENABLED,
- &hcon->hdev->dev_flags);
-
- spin_lock_init(&conn->lock);
- mutex_init(&conn->chan_lock);
-
- INIT_LIST_HEAD(&conn->chan_l);
- INIT_LIST_HEAD(&conn->users);
-
- if (hcon->type == LE_LINK)
- INIT_DELAYED_WORK(&conn->security_timer, security_timeout);
- else
- INIT_DELAYED_WORK(&conn->info_timer, l2cap_info_timeout);
-
- conn->disc_reason = HCI_ERROR_REMOTE_USER_TERM;
-
- return conn;
-}
-
static void l2cap_conn_free(struct kref *ref)
{
struct l2cap_conn *conn = container_of(ref, struct l2cap_conn, ref);
@@ -1848,154 +1776,6 @@ static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm,
return c1;
}
-static bool is_valid_psm(u16 psm, u8 dst_type)
-{
- if (!psm)
- return false;
-
- if (bdaddr_type_is_le(dst_type))
- return (psm <= 0x00ff);
-
- /* PSM must be odd and lsb of upper byte must be 0 */
- return ((psm & 0x0101) == 0x0001);
-}
-
-int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
- bdaddr_t *dst, u8 dst_type)
-{
- struct l2cap_conn *conn;
- struct hci_conn *hcon;
- struct hci_dev *hdev;
- __u8 auth_type;
- int err;
-
- BT_DBG("%pMR -> %pMR (type %u) psm 0x%2.2x", &chan->src, dst,
- dst_type, __le16_to_cpu(psm));
-
- hdev = hci_get_route(dst, &chan->src);
- if (!hdev)
- return -EHOSTUNREACH;
-
- hci_dev_lock(hdev);
-
- l2cap_chan_lock(chan);
-
- if (!is_valid_psm(__le16_to_cpu(psm), dst_type) && !cid &&
- chan->chan_type != L2CAP_CHAN_RAW) {
- err = -EINVAL;
- goto done;
- }
-
- if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED && !(psm || cid)) {
- err = -EINVAL;
- goto done;
- }
-
- switch (chan->mode) {
- case L2CAP_MODE_BASIC:
- break;
- case L2CAP_MODE_LE_FLOWCTL:
- l2cap_le_flowctl_init(chan);
- break;
- case L2CAP_MODE_ERTM:
- case L2CAP_MODE_STREAMING:
- if (!disable_ertm)
- break;
- /* fall through */
- default:
- err = -ENOTSUPP;
- goto done;
- }
-
- switch (chan->state) {
- case BT_CONNECT:
- case BT_CONNECT2:
- case BT_CONFIG:
- /* Already connecting */
- err = 0;
- goto done;
-
- case BT_CONNECTED:
- /* Already connected */
- err = -EISCONN;
- goto done;
-
- case BT_OPEN:
- case BT_BOUND:
- /* Can connect */
- break;
-
- default:
- err = -EBADFD;
- goto done;
- }
-
- /* Set destination address and psm */
- bacpy(&chan->dst, dst);
- chan->dst_type = dst_type;
-
- chan->psm = psm;
- chan->dcid = cid;
-
- auth_type = l2cap_get_auth_type(chan);
-
- if (bdaddr_type_is_le(dst_type))
- hcon = hci_connect(hdev, LE_LINK, dst, dst_type,
- chan->sec_level, auth_type);
- else
- hcon = hci_connect(hdev, ACL_LINK, dst, dst_type,
- chan->sec_level, auth_type);
-
- if (IS_ERR(hcon)) {
- err = PTR_ERR(hcon);
- goto done;
- }
-
- conn = l2cap_conn_add(hcon);
- if (!conn) {
- hci_conn_drop(hcon);
- err = -ENOMEM;
- goto done;
- }
-
- if (cid && __l2cap_get_chan_by_dcid(conn, cid)) {
- hci_conn_drop(hcon);
- err = -EBUSY;
- goto done;
- }
-
- /* Update source addr of the socket */
- bacpy(&chan->src, &hcon->src);
- chan->src_type = bdaddr_type(hcon, hcon->src_type);
-
- l2cap_chan_unlock(chan);
- l2cap_chan_add(conn, chan);
- l2cap_chan_lock(chan);
-
- /* l2cap_chan_add takes its own ref so we can drop this one */
- hci_conn_drop(hcon);
-
- l2cap_state_change(chan, BT_CONNECT);
- __set_chan_timer(chan, chan->ops->get_sndtimeo(chan));
-
- if (hcon->state == BT_CONNECTED) {
- if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
- __clear_chan_timer(chan);
- if (l2cap_chan_check_security(chan))
- l2cap_state_change(chan, BT_CONNECTED);
- } else
- l2cap_do_start(chan);
- }
-
- err = 0;
-
-done:
- l2cap_chan_unlock(chan);
- hci_dev_unlock(hdev);
- hci_dev_put(hdev);
- return err;
-}
-
static void l2cap_monitor_timeout(struct work_struct *work)
{
struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
@@ -2654,6 +2434,14 @@ int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
if (IS_ERR(skb))
return PTR_ERR(skb);
+ /* Channel lock is released before requesting new skb and then
+ * reacquired thus we need to recheck channel state.
+ */
+ if (chan->state != BT_CONNECTED) {
+ kfree_skb(skb);
+ return -ENOTCONN;
+ }
+
l2cap_do_send(chan, skb);
return len;
}
@@ -2703,6 +2491,14 @@ int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
if (IS_ERR(skb))
return PTR_ERR(skb);
+ /* Channel lock is released before requesting new skb and then
+ * reacquired thus we need to recheck channel state.
+ */
+ if (chan->state != BT_CONNECTED) {
+ kfree_skb(skb);
+ return -ENOTCONN;
+ }
+
l2cap_do_send(chan, skb);
err = len;
break;
@@ -5709,7 +5505,7 @@ static inline int l2cap_le_credits(struct l2cap_conn *conn,
{
struct l2cap_le_credits *pkt;
struct l2cap_chan *chan;
- u16 cid, credits;
+ u16 cid, credits, max_credits;
if (cmd_len != sizeof(*pkt))
return -EPROTO;
@@ -5724,6 +5520,17 @@ static inline int l2cap_le_credits(struct l2cap_conn *conn,
if (!chan)
return -EBADSLT;
+ max_credits = LE_FLOWCTL_MAX_CREDITS - chan->tx_credits;
+ if (credits > max_credits) {
+ BT_ERR("LE credits overflow");
+ l2cap_send_disconn_req(chan, ECONNRESET);
+
+ /* Return 0 so that we don't trigger an unnecessary
+ * command reject packet.
+ */
+ return 0;
+ }
+
chan->tx_credits += credits;
while (chan->tx_credits && !skb_queue_empty(&chan->tx_q)) {
@@ -5770,17 +5577,6 @@ static inline int l2cap_le_sig_cmd(struct l2cap_conn *conn,
{
int err = 0;
- if (!enable_lecoc) {
- switch (cmd->code) {
- case L2CAP_LE_CONN_REQ:
- case L2CAP_LE_CONN_RSP:
- case L2CAP_LE_CREDITS:
- case L2CAP_DISCONN_REQ:
- case L2CAP_DISCONN_RSP:
- return -EINVAL;
- }
- }
-
switch (cmd->code) {
case L2CAP_COMMAND_REJ:
l2cap_le_command_rej(conn, cmd, cmd_len, data);
@@ -6871,6 +6667,7 @@ static int l2cap_le_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb)
if (!chan->rx_credits) {
BT_ERR("No credits to receive LE L2CAP data");
+ l2cap_send_disconn_req(chan, ECONNRESET);
return -ENOBUFS;
}
@@ -6995,8 +6792,10 @@ static void l2cap_data_channel(struct l2cap_conn *conn, u16 cid,
* But we don't have any other choice. L2CAP doesn't
* provide flow control mechanism. */
- if (chan->imtu < skb->len)
+ if (chan->imtu < skb->len) {
+ BT_ERR("Dropping L2CAP data: receive buffer overflow");
goto drop;
+ }
if (!chan->ops->recv(chan, skb))
goto done;
@@ -7084,9 +6883,16 @@ drop:
static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
{
struct l2cap_hdr *lh = (void *) skb->data;
+ struct hci_conn *hcon = conn->hcon;
u16 cid, len;
__le16 psm;
+ if (hcon->state != BT_CONNECTED) {
+ BT_DBG("queueing pending rx skb");
+ skb_queue_tail(&conn->pending_rx, skb);
+ return;
+ }
+
skb_pull(skb, L2CAP_HDR_SIZE);
cid = __le16_to_cpu(lh->cid);
len = __le16_to_cpu(lh->len);
@@ -7132,6 +6938,247 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
}
}
+static void process_pending_rx(struct work_struct *work)
+{
+ struct l2cap_conn *conn = container_of(work, struct l2cap_conn,
+ pending_rx_work);
+ struct sk_buff *skb;
+
+ BT_DBG("");
+
+ while ((skb = skb_dequeue(&conn->pending_rx)))
+ l2cap_recv_frame(conn, skb);
+}
+
+static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
+{
+ struct l2cap_conn *conn = hcon->l2cap_data;
+ struct hci_chan *hchan;
+
+ if (conn)
+ return conn;
+
+ hchan = hci_chan_create(hcon);
+ if (!hchan)
+ return NULL;
+
+ conn = kzalloc(sizeof(struct l2cap_conn), GFP_KERNEL);
+ if (!conn) {
+ hci_chan_del(hchan);
+ return NULL;
+ }
+
+ kref_init(&conn->ref);
+ hcon->l2cap_data = conn;
+ conn->hcon = hcon;
+ hci_conn_get(conn->hcon);
+ conn->hchan = hchan;
+
+ BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
+
+ switch (hcon->type) {
+ case LE_LINK:
+ if (hcon->hdev->le_mtu) {
+ conn->mtu = hcon->hdev->le_mtu;
+ break;
+ }
+ /* fall through */
+ default:
+ conn->mtu = hcon->hdev->acl_mtu;
+ break;
+ }
+
+ conn->feat_mask = 0;
+
+ if (hcon->type == ACL_LINK)
+ conn->hs_enabled = test_bit(HCI_HS_ENABLED,
+ &hcon->hdev->dev_flags);
+
+ spin_lock_init(&conn->lock);
+ mutex_init(&conn->chan_lock);
+
+ INIT_LIST_HEAD(&conn->chan_l);
+ INIT_LIST_HEAD(&conn->users);
+
+ if (hcon->type == LE_LINK)
+ INIT_DELAYED_WORK(&conn->security_timer, security_timeout);
+ else
+ INIT_DELAYED_WORK(&conn->info_timer, l2cap_info_timeout);
+
+ skb_queue_head_init(&conn->pending_rx);
+ INIT_WORK(&conn->pending_rx_work, process_pending_rx);
+
+ conn->disc_reason = HCI_ERROR_REMOTE_USER_TERM;
+
+ return conn;
+}
+
+static bool is_valid_psm(u16 psm, u8 dst_type) {
+ if (!psm)
+ return false;
+
+ if (bdaddr_type_is_le(dst_type))
+ return (psm <= 0x00ff);
+
+ /* PSM must be odd and lsb of upper byte must be 0 */
+ return ((psm & 0x0101) == 0x0001);
+}
+
+int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
+ bdaddr_t *dst, u8 dst_type)
+{
+ struct l2cap_conn *conn;
+ struct hci_conn *hcon;
+ struct hci_dev *hdev;
+ __u8 auth_type;
+ int err;
+
+ BT_DBG("%pMR -> %pMR (type %u) psm 0x%2.2x", &chan->src, dst,
+ dst_type, __le16_to_cpu(psm));
+
+ hdev = hci_get_route(dst, &chan->src);
+ if (!hdev)
+ return -EHOSTUNREACH;
+
+ hci_dev_lock(hdev);
+
+ l2cap_chan_lock(chan);
+
+ if (!is_valid_psm(__le16_to_cpu(psm), dst_type) && !cid &&
+ chan->chan_type != L2CAP_CHAN_RAW) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ if (chan->chan_type == L2CAP_CHAN_CONN_ORIENTED && !psm) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ if (chan->chan_type == L2CAP_CHAN_FIXED && !cid) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ switch (chan->mode) {
+ case L2CAP_MODE_BASIC:
+ break;
+ case L2CAP_MODE_LE_FLOWCTL:
+ l2cap_le_flowctl_init(chan);
+ break;
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ if (!disable_ertm)
+ break;
+ /* fall through */
+ default:
+ err = -ENOTSUPP;
+ goto done;
+ }
+
+ switch (chan->state) {
+ case BT_CONNECT:
+ case BT_CONNECT2:
+ case BT_CONFIG:
+ /* Already connecting */
+ err = 0;
+ goto done;
+
+ case BT_CONNECTED:
+ /* Already connected */
+ err = -EISCONN;
+ goto done;
+
+ case BT_OPEN:
+ case BT_BOUND:
+ /* Can connect */
+ break;
+
+ default:
+ err = -EBADFD;
+ goto done;
+ }
+
+ /* Set destination address and psm */
+ bacpy(&chan->dst, dst);
+ chan->dst_type = dst_type;
+
+ chan->psm = psm;
+ chan->dcid = cid;
+
+ auth_type = l2cap_get_auth_type(chan);
+
+ if (bdaddr_type_is_le(dst_type)) {
+ /* Convert from L2CAP channel address type to HCI address type
+ */
+ if (dst_type == BDADDR_LE_PUBLIC)
+ dst_type = ADDR_LE_DEV_PUBLIC;
+ else
+ dst_type = ADDR_LE_DEV_RANDOM;
+
+ hcon = hci_connect_le(hdev, dst, dst_type, chan->sec_level,
+ auth_type);
+ } else {
+ hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type);
+ }
+
+ if (IS_ERR(hcon)) {
+ err = PTR_ERR(hcon);
+ goto done;
+ }
+
+ conn = l2cap_conn_add(hcon);
+ if (!conn) {
+ hci_conn_drop(hcon);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ if (cid && __l2cap_get_chan_by_dcid(conn, cid)) {
+ hci_conn_drop(hcon);
+ err = -EBUSY;
+ goto done;
+ }
+
+ /* Update source addr of the socket */
+ bacpy(&chan->src, &hcon->src);
+ chan->src_type = bdaddr_type(hcon, hcon->src_type);
+
+ l2cap_chan_unlock(chan);
+ l2cap_chan_add(conn, chan);
+ l2cap_chan_lock(chan);
+
+ /* l2cap_chan_add takes its own ref so we can drop this one */
+ hci_conn_drop(hcon);
+
+ l2cap_state_change(chan, BT_CONNECT);
+ __set_chan_timer(chan, chan->ops->get_sndtimeo(chan));
+
+ /* Release chan->sport so that it can be reused by other
+ * sockets (as it's only used for listening sockets).
+ */
+ write_lock(&chan_list_lock);
+ chan->sport = 0;
+ write_unlock(&chan_list_lock);
+
+ if (hcon->state == BT_CONNECTED) {
+ if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
+ __clear_chan_timer(chan);
+ if (l2cap_chan_check_security(chan))
+ l2cap_state_change(chan, BT_CONNECTED);
+ } else
+ l2cap_do_start(chan);
+ }
+
+ err = 0;
+
+done:
+ l2cap_chan_unlock(chan);
+ hci_dev_unlock(hdev);
+ hci_dev_put(hdev);
+ return err;
+}
+
/* ---- L2CAP interface with lower layer (HCI) ---- */
int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
@@ -7206,7 +7253,8 @@ static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)
if (encrypt == 0x00) {
if (chan->sec_level == BT_SECURITY_MEDIUM) {
__set_chan_timer(chan, L2CAP_ENC_TIMEOUT);
- } else if (chan->sec_level == BT_SECURITY_HIGH)
+ } else if (chan->sec_level == BT_SECURITY_HIGH ||
+ chan->sec_level == BT_SECURITY_FIPS)
l2cap_chan_close(chan, ECONNREFUSED);
} else {
if (chan->sec_level == BT_SECURITY_MEDIUM)
@@ -7226,7 +7274,7 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
if (hcon->type == LE_LINK) {
if (!status && encrypt)
- smp_distribute_keys(conn, 0);
+ smp_distribute_keys(conn);
cancel_delayed_work(&conn->security_timer);
}
@@ -7238,7 +7286,7 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
BT_DBG("chan %p scid 0x%4.4x state %s", chan, chan->scid,
state_to_string(chan->state));
- if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) {
+ if (chan->scid == L2CAP_CID_A2MP) {
l2cap_chan_unlock(chan);
continue;
}
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index d58f76bcebd1..b247f9d27fed 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -36,8 +36,6 @@
#include "smp.h"
-bool enable_lecoc;
-
static struct bt_sock_list l2cap_sk_list = {
.lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock)
};
@@ -101,9 +99,16 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
if (!bdaddr_type_is_valid(la.l2_bdaddr_type))
return -EINVAL;
+ if (la.l2_cid) {
+ /* When the socket gets created it defaults to
+ * CHAN_CONN_ORIENTED, so we need to overwrite the
+ * default here.
+ */
+ chan->chan_type = L2CAP_CHAN_FIXED;
+ chan->omtu = L2CAP_DEFAULT_MTU;
+ }
+
if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
- if (!enable_lecoc && la.l2_psm)
- return -EINVAL;
/* We only allow ATT user space socket */
if (la.l2_cid &&
la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT))
@@ -220,8 +225,6 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
return -EINVAL;
if (bdaddr_type_is_le(la.l2_bdaddr_type)) {
- if (!enable_lecoc && la.l2_psm)
- return -EINVAL;
/* We only allow ATT user space socket */
if (la.l2_cid &&
la.l2_cid != __constant_cpu_to_le16(L2CAP_CID_ATT))
@@ -357,17 +360,20 @@ static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr,
BT_DBG("sock %p, sk %p", sock, sk);
+ if (peer && sk->sk_state != BT_CONNECTED)
+ 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) {
- la->l2_psm = chan->psm;
bacpy(&la->l2_bdaddr, &chan->dst);
la->l2_cid = cpu_to_le16(chan->dcid);
la->l2_bdaddr_type = chan->dst_type;
} else {
- la->l2_psm = chan->sport;
bacpy(&la->l2_bdaddr, &chan->src);
la->l2_cid = cpu_to_le16(chan->scid);
la->l2_bdaddr_type = chan->src_type;
@@ -432,6 +438,10 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname,
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;
@@ -445,6 +455,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname,
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
+
break;
case L2CAP_CONNINFO:
@@ -499,6 +510,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
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;
@@ -560,11 +572,6 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
break;
case BT_SNDMTU:
- if (!enable_lecoc) {
- err = -EPROTONOSUPPORT;
- break;
- }
-
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
@@ -580,11 +587,6 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
break;
case BT_RCVMTU:
- if (!enable_lecoc) {
- err = -EPROTONOSUPPORT;
- break;
- }
-
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
@@ -699,6 +701,11 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
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)
@@ -750,6 +757,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
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;
@@ -895,11 +903,6 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
break;
case BT_SNDMTU:
- if (!enable_lecoc) {
- err = -EPROTONOSUPPORT;
- break;
- }
-
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
@@ -912,11 +915,6 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
break;
case BT_RCVMTU:
- if (!enable_lecoc) {
- err = -EPROTONOSUPPORT;
- break;
- }
-
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
@@ -1449,6 +1447,11 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
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) {
@@ -1614,6 +1617,3 @@ void l2cap_cleanup_sockets(void)
bt_sock_unregister(BTPROTO_L2CAP);
proto_unregister(&l2cap_proto);
}
-
-module_param(enable_lecoc, bool, 0644);
-MODULE_PARM_DESC(enable_lecoc, "Enable support for LE CoC");
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a03ca3ca91bf..98e9df3556e7 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -34,7 +34,7 @@
#include "smp.h"
#define MGMT_VERSION 1
-#define MGMT_REVISION 4
+#define MGMT_REVISION 5
static const u16 mgmt_commands[] = {
MGMT_OP_READ_INDEX_LIST,
@@ -79,6 +79,10 @@ static const u16 mgmt_commands[] = {
MGMT_OP_SET_BREDR,
MGMT_OP_SET_STATIC_ADDRESS,
MGMT_OP_SET_SCAN_PARAMS,
+ MGMT_OP_SET_SECURE_CONN,
+ MGMT_OP_SET_DEBUG_KEYS,
+ MGMT_OP_SET_PRIVACY,
+ MGMT_OP_LOAD_IRKS,
};
static const u16 mgmt_events[] = {
@@ -103,6 +107,7 @@ static const u16 mgmt_events[] = {
MGMT_EV_DEVICE_UNBLOCKED,
MGMT_EV_DEVICE_UNPAIRED,
MGMT_EV_PASSKEY_NOTIFY,
+ MGMT_EV_NEW_IRK,
};
#define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
@@ -127,7 +132,7 @@ static u8 mgmt_status_table[] = {
MGMT_STATUS_FAILED, /* Hardware Failure */
MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */
MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */
- MGMT_STATUS_NOT_PAIRED, /* PIN or Key Missing */
+ MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */
MGMT_STATUS_NO_RESOURCES, /* Memory Full */
MGMT_STATUS_TIMEOUT, /* Connection Timeout */
MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */
@@ -363,6 +368,7 @@ static u32 get_supported_settings(struct hci_dev *hdev)
settings |= MGMT_SETTING_POWERED;
settings |= MGMT_SETTING_PAIRABLE;
+ settings |= MGMT_SETTING_DEBUG_KEYS;
if (lmp_bredr_capable(hdev)) {
settings |= MGMT_SETTING_CONNECTABLE;
@@ -376,11 +382,16 @@ static u32 get_supported_settings(struct hci_dev *hdev)
settings |= MGMT_SETTING_SSP;
settings |= MGMT_SETTING_HS;
}
+
+ if (lmp_sc_capable(hdev) ||
+ test_bit(HCI_FORCE_SC, &hdev->dev_flags))
+ settings |= MGMT_SETTING_SECURE_CONN;
}
if (lmp_le_capable(hdev)) {
settings |= MGMT_SETTING_LE;
settings |= MGMT_SETTING_ADVERTISING;
+ settings |= MGMT_SETTING_PRIVACY;
}
return settings;
@@ -423,6 +434,15 @@ static u32 get_current_settings(struct hci_dev *hdev)
if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
settings |= MGMT_SETTING_ADVERTISING;
+ if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags))
+ settings |= MGMT_SETTING_SECURE_CONN;
+
+ if (test_bit(HCI_DEBUG_KEYS, &hdev->dev_flags))
+ settings |= MGMT_SETTING_DEBUG_KEYS;
+
+ if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
+ settings |= MGMT_SETTING_PRIVACY;
+
return settings;
}
@@ -629,14 +649,8 @@ static u8 create_adv_data(struct hci_dev *hdev, u8 *ptr)
flags |= get_adv_discov_flags(hdev);
- if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) {
- if (lmp_le_br_capable(hdev))
- flags |= LE_AD_SIM_LE_BREDR_CTRL;
- if (lmp_host_le_br_capable(hdev))
- flags |= LE_AD_SIM_LE_BREDR_HOST;
- } else {
+ if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
flags |= LE_AD_NO_BREDR;
- }
if (flags) {
BT_DBG("adv flags 0x%02x", flags);
@@ -803,6 +817,64 @@ static void update_class(struct hci_request *req)
hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
}
+static bool get_connectable(struct hci_dev *hdev)
+{
+ struct pending_cmd *cmd;
+
+ /* If there's a pending mgmt command the flag will not yet have
+ * it's final value, so check for this first.
+ */
+ cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
+ if (cmd) {
+ struct mgmt_mode *cp = cmd->param;
+ return cp->val;
+ }
+
+ return test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
+}
+
+static void enable_advertising(struct hci_request *req)
+{
+ struct hci_dev *hdev = req->hdev;
+ struct hci_cp_le_set_adv_param cp;
+ u8 own_addr_type, enable = 0x01;
+ bool connectable;
+
+ /* Clear the HCI_ADVERTISING bit temporarily so that the
+ * hci_update_random_address knows that it's safe to go ahead
+ * and write a new random address. The flag will be set back on
+ * as soon as the SET_ADV_ENABLE HCI command completes.
+ */
+ clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
+
+ connectable = get_connectable(hdev);
+
+ /* Set require_privacy to true only when non-connectable
+ * advertising is used. In that case it is fine to use a
+ * non-resolvable private address.
+ */
+ if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
+ return;
+
+ memset(&cp, 0, sizeof(cp));
+ cp.min_interval = __constant_cpu_to_le16(0x0800);
+ cp.max_interval = __constant_cpu_to_le16(0x0800);
+ cp.type = connectable ? LE_ADV_IND : LE_ADV_NONCONN_IND;
+ cp.own_address_type = own_addr_type;
+ cp.channel_map = hdev->le_adv_channel_map;
+
+ hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
+
+ hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
+}
+
+static void disable_advertising(struct hci_request *req)
+{
+ u8 enable = 0x00;
+
+ hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
+}
+
static void service_cache_off(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev,
@@ -824,12 +896,39 @@ static void service_cache_off(struct work_struct *work)
hci_req_run(&req, NULL);
}
+static void rpa_expired(struct work_struct *work)
+{
+ struct hci_dev *hdev = container_of(work, struct hci_dev,
+ rpa_expired.work);
+ struct hci_request req;
+
+ BT_DBG("");
+
+ set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
+
+ if (!test_bit(HCI_ADVERTISING, &hdev->dev_flags) ||
+ hci_conn_num(hdev, LE_LINK) > 0)
+ return;
+
+ /* The generation of a new RPA and programming it into the
+ * controller happens in the enable_advertising() function.
+ */
+
+ hci_req_init(&req, hdev);
+
+ disable_advertising(&req);
+ enable_advertising(&req);
+
+ hci_req_run(&req, NULL);
+}
+
static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
{
if (test_and_set_bit(HCI_MGMT, &hdev->dev_flags))
return;
INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
+ INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
/* Non-mgmt controlled devices get this bit set
* implicitly so that pairing works for them, however
@@ -935,6 +1034,71 @@ static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
sizeof(settings));
}
+static void clean_up_hci_complete(struct hci_dev *hdev, u8 status)
+{
+ BT_DBG("%s status 0x%02x", hdev->name, status);
+
+ if (hci_conn_count(hdev) == 0) {
+ cancel_delayed_work(&hdev->power_off);
+ queue_work(hdev->req_workqueue, &hdev->power_off.work);
+ }
+}
+
+static int clean_up_hci_state(struct hci_dev *hdev)
+{
+ struct hci_request req;
+ struct hci_conn *conn;
+
+ hci_req_init(&req, hdev);
+
+ if (test_bit(HCI_ISCAN, &hdev->flags) ||
+ test_bit(HCI_PSCAN, &hdev->flags)) {
+ u8 scan = 0x00;
+ hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+ }
+
+ if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
+ disable_advertising(&req);
+
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+ hci_req_add_le_scan_disable(&req);
+ }
+
+ list_for_each_entry(conn, &hdev->conn_hash.list, list) {
+ struct hci_cp_disconnect dc;
+ struct hci_cp_reject_conn_req rej;
+
+ switch (conn->state) {
+ case BT_CONNECTED:
+ case BT_CONFIG:
+ dc.handle = cpu_to_le16(conn->handle);
+ dc.reason = 0x15; /* Terminated due to Power Off */
+ hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
+ break;
+ case BT_CONNECT:
+ if (conn->type == LE_LINK)
+ hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL,
+ 0, NULL);
+ else if (conn->type == ACL_LINK)
+ hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL,
+ 6, &conn->dst);
+ break;
+ case BT_CONNECT2:
+ bacpy(&rej.bdaddr, &conn->dst);
+ rej.reason = 0x15; /* Terminated due to Power Off */
+ if (conn->type == ACL_LINK)
+ hci_req_add(&req, HCI_OP_REJECT_CONN_REQ,
+ sizeof(rej), &rej);
+ else if (conn->type == SCO_LINK)
+ hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ,
+ sizeof(rej), &rej);
+ break;
+ }
+ }
+
+ return hci_req_run(&req, clean_up_hci_complete);
+}
+
static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
@@ -978,12 +1142,23 @@ static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
goto failed;
}
- if (cp->val)
+ if (cp->val) {
queue_work(hdev->req_workqueue, &hdev->power_on);
- else
- queue_work(hdev->req_workqueue, &hdev->power_off.work);
-
- err = 0;
+ err = 0;
+ } else {
+ /* Disconnect connections, stop scans, etc */
+ err = clean_up_hci_state(hdev);
+ if (!err)
+ queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
+ HCI_POWER_OFF_TIMEOUT);
+
+ /* ENODATA means there were no HCI commands queued */
+ if (err == -ENODATA) {
+ cancel_delayed_work(&hdev->power_off);
+ queue_work(hdev->req_workqueue, &hdev->power_off.work);
+ err = 0;
+ }
+ }
failed:
hci_dev_unlock(hdev);
@@ -1336,50 +1511,6 @@ static void write_fast_connectable(struct hci_request *req, bool enable)
hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
}
-static u8 get_adv_type(struct hci_dev *hdev)
-{
- struct pending_cmd *cmd;
- bool connectable;
-
- /* If there's a pending mgmt command the flag will not yet have
- * it's final value, so check for this first.
- */
- cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
- if (cmd) {
- struct mgmt_mode *cp = cmd->param;
- connectable = !!cp->val;
- } else {
- connectable = test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
- }
-
- return connectable ? LE_ADV_IND : LE_ADV_NONCONN_IND;
-}
-
-static void enable_advertising(struct hci_request *req)
-{
- struct hci_dev *hdev = req->hdev;
- struct hci_cp_le_set_adv_param cp;
- u8 enable = 0x01;
-
- memset(&cp, 0, sizeof(cp));
- cp.min_interval = __constant_cpu_to_le16(0x0800);
- cp.max_interval = __constant_cpu_to_le16(0x0800);
- cp.type = get_adv_type(hdev);
- cp.own_address_type = hdev->own_addr_type;
- cp.channel_map = 0x07;
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
-}
-
-static void disable_advertising(struct hci_request *req)
-{
- u8 enable = 0x00;
-
- hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
-}
-
static void set_connectable_complete(struct hci_dev *hdev, u8 status)
{
struct pending_cmd *cmd;
@@ -2065,7 +2196,7 @@ static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
}
if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) {
- err = hci_uuids_clear(hdev);
+ hci_uuids_clear(hdev);
if (enable_service_cache(hdev)) {
err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID,
@@ -2205,6 +2336,7 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
{
struct mgmt_cp_load_link_keys *cp = data;
u16 key_count, expected_len;
+ bool changed;
int i;
BT_DBG("request for %s", hdev->name);
@@ -2234,7 +2366,7 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
for (i = 0; i < key_count; i++) {
struct mgmt_link_key_info *key = &cp->keys[i];
- if (key->addr.type != BDADDR_BREDR)
+ if (key->addr.type != BDADDR_BREDR || key->type > 0x08)
return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
MGMT_STATUS_INVALID_PARAMS);
}
@@ -2244,9 +2376,12 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
hci_link_keys_clear(hdev);
if (cp->debug_keys)
- set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
+ changed = !test_and_set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
else
- clear_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
+ changed = test_and_clear_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
+
+ if (changed)
+ new_settings(hdev, NULL);
for (i = 0; i < key_count; i++) {
struct mgmt_link_key_info *key = &cp->keys[i];
@@ -2306,10 +2441,22 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
goto unlock;
}
- if (cp->addr.type == BDADDR_BREDR)
+ if (cp->addr.type == BDADDR_BREDR) {
err = hci_remove_link_key(hdev, &cp->addr.bdaddr);
- else
- err = hci_remove_ltk(hdev, &cp->addr.bdaddr);
+ } else {
+ u8 addr_type;
+
+ if (cp->addr.type == BDADDR_LE_PUBLIC)
+ addr_type = ADDR_LE_DEV_PUBLIC;
+ else
+ addr_type = ADDR_LE_DEV_RANDOM;
+
+ hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
+
+ hci_conn_params_del(hdev, &cp->addr.bdaddr, addr_type);
+
+ err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
+ }
if (err < 0) {
err = cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
@@ -2633,6 +2780,16 @@ static void pairing_complete(struct pending_cmd *cmd, u8 status)
mgmt_pending_remove(cmd);
}
+void mgmt_smp_complete(struct hci_conn *conn, bool complete)
+{
+ u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
+ struct pending_cmd *cmd;
+
+ cmd = find_pairing(conn);
+ if (cmd)
+ pairing_complete(cmd, status);
+}
+
static void pairing_complete_cb(struct hci_conn *conn, u8 status)
{
struct pending_cmd *cmd;
@@ -2646,7 +2803,7 @@ static void pairing_complete_cb(struct hci_conn *conn, u8 status)
pairing_complete(cmd, mgmt_status(status));
}
-static void le_connect_complete_cb(struct hci_conn *conn, u8 status)
+static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
{
struct pending_cmd *cmd;
@@ -2697,12 +2854,22 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
else
auth_type = HCI_AT_DEDICATED_BONDING_MITM;
- if (cp->addr.type == BDADDR_BREDR)
- conn = hci_connect(hdev, ACL_LINK, &cp->addr.bdaddr,
- cp->addr.type, sec_level, auth_type);
- else
- conn = hci_connect(hdev, LE_LINK, &cp->addr.bdaddr,
- cp->addr.type, sec_level, auth_type);
+ if (cp->addr.type == BDADDR_BREDR) {
+ conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
+ auth_type);
+ } else {
+ u8 addr_type;
+
+ /* Convert from L2CAP channel address type to HCI address type
+ */
+ if (cp->addr.type == BDADDR_LE_PUBLIC)
+ addr_type = ADDR_LE_DEV_PUBLIC;
+ else
+ addr_type = ADDR_LE_DEV_RANDOM;
+
+ conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type,
+ sec_level, auth_type);
+ }
if (IS_ERR(conn)) {
int status;
@@ -2733,13 +2900,16 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
}
/* For LE, just connecting isn't a proof that the pairing finished */
- if (cp->addr.type == BDADDR_BREDR)
+ if (cp->addr.type == BDADDR_BREDR) {
conn->connect_cfm_cb = pairing_complete_cb;
- else
- conn->connect_cfm_cb = le_connect_complete_cb;
+ conn->security_cfm_cb = pairing_complete_cb;
+ conn->disconn_cfm_cb = pairing_complete_cb;
+ } else {
+ conn->connect_cfm_cb = le_pairing_complete_cb;
+ conn->security_cfm_cb = le_pairing_complete_cb;
+ conn->disconn_cfm_cb = le_pairing_complete_cb;
+ }
- conn->security_cfm_cb = pairing_complete_cb;
- conn->disconn_cfm_cb = pairing_complete_cb;
conn->io_capability = cp->io_cap;
cmd->user_data = conn;
@@ -3071,7 +3241,12 @@ static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
goto unlock;
}
- err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
+ if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags))
+ err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_EXT_DATA,
+ 0, NULL);
+ else
+ err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
+
if (err < 0)
mgmt_pending_remove(cmd);
@@ -3083,23 +3258,46 @@ unlock:
static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
void *data, u16 len)
{
- struct mgmt_cp_add_remote_oob_data *cp = data;
- u8 status;
int err;
BT_DBG("%s ", hdev->name);
hci_dev_lock(hdev);
- err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, cp->hash,
- cp->randomizer);
- if (err < 0)
- status = MGMT_STATUS_FAILED;
- else
- status = MGMT_STATUS_SUCCESS;
+ if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
+ struct mgmt_cp_add_remote_oob_data *cp = data;
+ u8 status;
- err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA, status,
- &cp->addr, sizeof(cp->addr));
+ err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
+ cp->hash, cp->randomizer);
+ if (err < 0)
+ status = MGMT_STATUS_FAILED;
+ else
+ status = MGMT_STATUS_SUCCESS;
+
+ err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
+ status, &cp->addr, sizeof(cp->addr));
+ } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
+ struct mgmt_cp_add_remote_oob_ext_data *cp = data;
+ u8 status;
+
+ err = hci_add_remote_oob_ext_data(hdev, &cp->addr.bdaddr,
+ cp->hash192,
+ cp->randomizer192,
+ cp->hash256,
+ cp->randomizer256);
+ if (err < 0)
+ status = MGMT_STATUS_FAILED;
+ else
+ status = MGMT_STATUS_SUCCESS;
+
+ err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
+ status, &cp->addr, sizeof(cp->addr));
+ } else {
+ BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
+ err = cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
+ MGMT_STATUS_INVALID_PARAMS);
+ }
hci_dev_unlock(hdev);
return err;
@@ -3195,7 +3393,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
struct hci_request req;
/* General inquiry access code (GIAC) */
u8 lap[3] = { 0x33, 0x8b, 0x9e };
- u8 status;
+ u8 status, own_addr_type;
int err;
BT_DBG("%s", hdev->name);
@@ -3280,18 +3478,31 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
goto failed;
}
- if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+ /* If controller is scanning, it means the background scanning
+ * is running. Thus, we should temporarily stop it in order to
+ * set the discovery scanning parameters.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
+ hci_req_add_le_scan_disable(&req);
+
+ memset(&param_cp, 0, sizeof(param_cp));
+
+ /* All active scans will be done with either a resolvable
+ * private address (when privacy feature has been enabled)
+ * or unresolvable private address.
+ */
+ err = hci_update_random_address(&req, true, &own_addr_type);
+ if (err < 0) {
err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
- MGMT_STATUS_BUSY);
+ MGMT_STATUS_FAILED);
mgmt_pending_remove(cmd);
goto failed;
}
- memset(&param_cp, 0, sizeof(param_cp));
param_cp.type = LE_SCAN_ACTIVE;
param_cp.interval = cpu_to_le16(DISCOV_LE_SCAN_INT);
param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
- param_cp.own_address_type = hdev->own_addr_type;
+ param_cp.own_address_type = own_addr_type;
hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
&param_cp);
@@ -3361,7 +3572,6 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
struct hci_cp_remote_name_req_cancel cp;
struct inquiry_entry *e;
struct hci_request req;
- struct hci_cp_le_set_scan_enable enable_cp;
int err;
BT_DBG("%s", hdev->name);
@@ -3397,10 +3607,7 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
} else {
cancel_delayed_work(&hdev->le_scan_disable);
- memset(&enable_cp, 0, sizeof(enable_cp));
- enable_cp.enable = LE_SCAN_DISABLE;
- hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
- sizeof(enable_cp), &enable_cp);
+ hci_req_add_le_scan_disable(&req);
}
break;
@@ -3457,15 +3664,17 @@ static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
hci_dev_lock(hdev);
if (!hci_discovery_active(hdev)) {
- err = cmd_status(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
- MGMT_STATUS_FAILED);
+ err = cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
+ MGMT_STATUS_FAILED, &cp->addr,
+ sizeof(cp->addr));
goto failed;
}
e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
if (!e) {
- err = cmd_status(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
- MGMT_STATUS_INVALID_PARAMS);
+ err = cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
+ MGMT_STATUS_INVALID_PARAMS, &cp->addr,
+ sizeof(cp->addr));
goto failed;
}
@@ -3754,6 +3963,21 @@ static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
err = cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, NULL, 0);
+ /* If background scan is running, restart it so new parameters are
+ * loaded.
+ */
+ if (test_bit(HCI_LE_SCAN, &hdev->dev_flags) &&
+ hdev->discovery.state == DISCOVERY_STOPPED) {
+ struct hci_request req;
+
+ hci_req_init(&req, hdev);
+
+ hci_req_add_le_scan_disable(&req);
+ hci_req_add_le_passive_scan(&req);
+
+ hci_req_run(&req, NULL);
+ }
+
hci_dev_unlock(hdev);
return err;
@@ -3999,15 +4223,269 @@ unlock:
return err;
}
+static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
+ void *data, u16 len)
+{
+ struct mgmt_mode *cp = data;
+ struct pending_cmd *cmd;
+ u8 val, status;
+ int err;
+
+ BT_DBG("request for %s", hdev->name);
+
+ status = mgmt_bredr_support(hdev);
+ if (status)
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
+ status);
+
+ if (!lmp_sc_capable(hdev) &&
+ !test_bit(HCI_FORCE_SC, &hdev->dev_flags))
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
+ MGMT_STATUS_NOT_SUPPORTED);
+
+ if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ hci_dev_lock(hdev);
+
+ if (!hdev_is_powered(hdev)) {
+ bool changed;
+
+ if (cp->val) {
+ changed = !test_and_set_bit(HCI_SC_ENABLED,
+ &hdev->dev_flags);
+ if (cp->val == 0x02)
+ set_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ else
+ clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ } else {
+ changed = test_and_clear_bit(HCI_SC_ENABLED,
+ &hdev->dev_flags);
+ clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ }
+
+ err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
+ if (err < 0)
+ goto failed;
+
+ if (changed)
+ err = new_settings(hdev, sk);
+
+ goto failed;
+ }
+
+ if (mgmt_pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
+ err = cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
+ MGMT_STATUS_BUSY);
+ goto failed;
+ }
+
+ val = !!cp->val;
+
+ if (val == test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
+ (cp->val == 0x02) == test_bit(HCI_SC_ONLY, &hdev->dev_flags)) {
+ err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
+ goto failed;
+ }
+
+ cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
+ if (!cmd) {
+ err = -ENOMEM;
+ goto failed;
+ }
+
+ err = hci_send_cmd(hdev, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
+ if (err < 0) {
+ mgmt_pending_remove(cmd);
+ goto failed;
+ }
+
+ if (cp->val == 0x02)
+ set_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ else
+ clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
+
+failed:
+ hci_dev_unlock(hdev);
+ return err;
+}
+
+static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
+ void *data, u16 len)
+{
+ struct mgmt_mode *cp = data;
+ bool changed;
+ int err;
+
+ BT_DBG("request for %s", hdev->name);
+
+ if (cp->val != 0x00 && cp->val != 0x01)
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ hci_dev_lock(hdev);
+
+ if (cp->val)
+ changed = !test_and_set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
+ else
+ changed = test_and_clear_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
+
+ err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
+ if (err < 0)
+ goto unlock;
+
+ if (changed)
+ err = new_settings(hdev, sk);
+
+unlock:
+ hci_dev_unlock(hdev);
+ return err;
+}
+
+static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
+ u16 len)
+{
+ struct mgmt_cp_set_privacy *cp = cp_data;
+ bool changed;
+ int err;
+
+ BT_DBG("request for %s", hdev->name);
+
+ if (!lmp_le_capable(hdev))
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
+ MGMT_STATUS_NOT_SUPPORTED);
+
+ if (cp->privacy != 0x00 && cp->privacy != 0x01)
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ if (hdev_is_powered(hdev))
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
+ MGMT_STATUS_REJECTED);
+
+ hci_dev_lock(hdev);
+
+ /* If user space supports this command it is also expected to
+ * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
+ */
+ set_bit(HCI_RPA_RESOLVING, &hdev->dev_flags);
+
+ if (cp->privacy) {
+ changed = !test_and_set_bit(HCI_PRIVACY, &hdev->dev_flags);
+ memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
+ set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
+ } else {
+ changed = test_and_clear_bit(HCI_PRIVACY, &hdev->dev_flags);
+ memset(hdev->irk, 0, sizeof(hdev->irk));
+ clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags);
+ }
+
+ err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
+ if (err < 0)
+ goto unlock;
+
+ if (changed)
+ err = new_settings(hdev, sk);
+
+unlock:
+ hci_dev_unlock(hdev);
+ return err;
+}
+
+static bool irk_is_valid(struct mgmt_irk_info *irk)
+{
+ switch (irk->addr.type) {
+ case BDADDR_LE_PUBLIC:
+ return true;
+
+ case BDADDR_LE_RANDOM:
+ /* Two most significant bits shall be set */
+ if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
+ return false;
+ return true;
+ }
+
+ return false;
+}
+
+static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
+ u16 len)
+{
+ struct mgmt_cp_load_irks *cp = cp_data;
+ u16 irk_count, expected_len;
+ int i, err;
+
+ BT_DBG("request for %s", hdev->name);
+
+ if (!lmp_le_capable(hdev))
+ return cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
+ MGMT_STATUS_NOT_SUPPORTED);
+
+ irk_count = __le16_to_cpu(cp->irk_count);
+
+ expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
+ if (expected_len != len) {
+ BT_ERR("load_irks: expected %u bytes, got %u bytes",
+ len, expected_len);
+ return cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
+ MGMT_STATUS_INVALID_PARAMS);
+ }
+
+ BT_DBG("%s irk_count %u", hdev->name, irk_count);
+
+ for (i = 0; i < irk_count; i++) {
+ struct mgmt_irk_info *key = &cp->irks[i];
+
+ if (!irk_is_valid(key))
+ return cmd_status(sk, hdev->id,
+ MGMT_OP_LOAD_IRKS,
+ MGMT_STATUS_INVALID_PARAMS);
+ }
+
+ hci_dev_lock(hdev);
+
+ hci_smp_irks_clear(hdev);
+
+ for (i = 0; i < irk_count; i++) {
+ struct mgmt_irk_info *irk = &cp->irks[i];
+ u8 addr_type;
+
+ if (irk->addr.type == BDADDR_LE_PUBLIC)
+ addr_type = ADDR_LE_DEV_PUBLIC;
+ else
+ addr_type = ADDR_LE_DEV_RANDOM;
+
+ hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val,
+ BDADDR_ANY);
+ }
+
+ set_bit(HCI_RPA_RESOLVING, &hdev->dev_flags);
+
+ err = cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
+
+ hci_dev_unlock(hdev);
+
+ return err;
+}
+
static bool ltk_is_valid(struct mgmt_ltk_info *key)
{
- if (key->authenticated != 0x00 && key->authenticated != 0x01)
- return false;
if (key->master != 0x00 && key->master != 0x01)
return false;
- if (!bdaddr_type_is_le(key->addr.type))
- return false;
- return true;
+
+ switch (key->addr.type) {
+ case BDADDR_LE_PUBLIC:
+ return true;
+
+ case BDADDR_LE_RANDOM:
+ /* Two most significant bits shall be set */
+ if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
+ return false;
+ return true;
+ }
+
+ return false;
}
static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
@@ -4063,9 +4541,9 @@ static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
else
type = HCI_SMP_LTK_SLAVE;
- hci_add_ltk(hdev, &key->addr.bdaddr, addr_type,
- type, 0, key->authenticated, key->val,
- key->enc_size, key->ediv, key->rand);
+ hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type,
+ key->type, key->val, key->enc_size, key->ediv,
+ key->rand);
}
err = cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
@@ -4115,7 +4593,7 @@ static const struct mgmt_handler {
{ user_passkey_reply, false, MGMT_USER_PASSKEY_REPLY_SIZE },
{ user_passkey_neg_reply, false, MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
{ read_local_oob_data, false, MGMT_READ_LOCAL_OOB_DATA_SIZE },
- { add_remote_oob_data, false, MGMT_ADD_REMOTE_OOB_DATA_SIZE },
+ { add_remote_oob_data, true, MGMT_ADD_REMOTE_OOB_DATA_SIZE },
{ remove_remote_oob_data, false, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
{ start_discovery, false, MGMT_START_DISCOVERY_SIZE },
{ stop_discovery, false, MGMT_STOP_DISCOVERY_SIZE },
@@ -4127,6 +4605,10 @@ static const struct mgmt_handler {
{ set_bredr, false, MGMT_SETTING_SIZE },
{ set_static_address, false, MGMT_SET_STATIC_ADDRESS_SIZE },
{ set_scan_params, false, MGMT_SET_SCAN_PARAMS_SIZE },
+ { set_secure_conn, false, MGMT_SETTING_SIZE },
+ { set_debug_keys, false, MGMT_SETTING_SIZE },
+ { set_privacy, false, MGMT_SET_PRIVACY_SIZE },
+ { load_irks, true, MGMT_LOAD_IRKS_SIZE },
};
@@ -4243,6 +4725,17 @@ void mgmt_index_removed(struct hci_dev *hdev)
mgmt_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, NULL);
}
+/* This function requires the caller holds hdev->lock */
+static void restart_le_auto_conns(struct hci_dev *hdev)
+{
+ struct hci_conn_params *p;
+
+ list_for_each_entry(p, &hdev->le_conn_params, list) {
+ if (p->auto_connect == HCI_AUTO_CONN_ALWAYS)
+ hci_pend_le_conn_add(hdev, &p->addr, p->addr_type);
+ }
+}
+
static void powered_complete(struct hci_dev *hdev, u8 status)
{
struct cmd_lookup match = { NULL, hdev };
@@ -4251,6 +4744,8 @@ static void powered_complete(struct hci_dev *hdev, u8 status)
hci_dev_lock(hdev);
+ restart_le_auto_conns(hdev);
+
mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
new_settings(hdev, match.sk);
@@ -4292,11 +4787,6 @@ static int powered_update_hci(struct hci_dev *hdev)
}
if (lmp_le_capable(hdev)) {
- /* Set random address to static address if configured */
- if (bacmp(&hdev->static_addr, BDADDR_ANY))
- hci_req_add(&req, HCI_OP_LE_SET_RANDOM_ADDR, 6,
- &hdev->static_addr);
-
/* Make sure the controller has a good default for
* advertising data. This also applies to the case
* where BR/EDR was toggled during the AUTO_OFF phase.
@@ -4422,6 +4912,10 @@ void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable)
if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev))
return;
+ /* Powering off may clear the scan mode - don't let that interfere */
+ if (!discoverable && mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
+ return;
+
if (discoverable) {
changed = !test_and_set_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
} else {
@@ -4455,6 +4949,10 @@ void mgmt_connectable(struct hci_dev *hdev, u8 connectable)
if (mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev))
return;
+ /* Powering off may clear the scan mode - don't let that interfere */
+ if (!connectable && mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
+ return;
+
if (connectable)
changed = !test_and_set_bit(HCI_CONNECTABLE, &hdev->dev_flags);
else
@@ -4464,6 +4962,18 @@ void mgmt_connectable(struct hci_dev *hdev, u8 connectable)
new_settings(hdev, NULL);
}
+void mgmt_advertising(struct hci_dev *hdev, u8 advertising)
+{
+ /* Powering off may stop advertising - don't let that interfere */
+ if (!advertising && mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
+ return;
+
+ if (advertising)
+ set_bit(HCI_ADVERTISING, &hdev->dev_flags);
+ else
+ clear_bit(HCI_ADVERTISING, &hdev->dev_flags);
+}
+
void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status)
{
u8 mgmt_err = mgmt_status(status);
@@ -4494,28 +5004,74 @@ void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
}
-void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent)
+void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key)
{
struct mgmt_ev_new_long_term_key ev;
memset(&ev, 0, sizeof(ev));
- ev.store_hint = persistent;
+ /* Devices using resolvable or non-resolvable random addresses
+ * without providing an indentity resolving key don't require
+ * to store long term keys. Their addresses will change the
+ * next time around.
+ *
+ * Only when a remote device provides an identity address
+ * make sure the long term key is stored. If the remote
+ * identity is known, the long term keys are internally
+ * mapped to the identity address. So allow static random
+ * and public addresses here.
+ */
+ if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
+ (key->bdaddr.b[5] & 0xc0) != 0xc0)
+ ev.store_hint = 0x00;
+ else
+ ev.store_hint = 0x01;
+
bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
- ev.key.authenticated = key->authenticated;
+ ev.key.type = key->authenticated;
ev.key.enc_size = key->enc_size;
ev.key.ediv = key->ediv;
+ ev.key.rand = key->rand;
if (key->type == HCI_SMP_LTK)
ev.key.master = 1;
- memcpy(ev.key.rand, key->rand, sizeof(key->rand));
memcpy(ev.key.val, key->val, sizeof(key->val));
mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
}
+void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk)
+{
+ struct mgmt_ev_new_irk ev;
+
+ memset(&ev, 0, sizeof(ev));
+
+ /* For identity resolving keys from devices that are already
+ * using a public address or static random address, do not
+ * ask for storing this key. The identity resolving key really
+ * is only mandatory for devices using resovlable random
+ * addresses.
+ *
+ * Storing all identity resolving keys has the downside that
+ * they will be also loaded on next boot of they system. More
+ * identity resolving keys, means more time during scanning is
+ * needed to actually resolve these addresses.
+ */
+ if (bacmp(&irk->rpa, BDADDR_ANY))
+ ev.store_hint = 0x01;
+ else
+ ev.store_hint = 0x00;
+
+ bacpy(&ev.rpa, &irk->rpa);
+ bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
+ ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
+ memcpy(ev.irk.val, irk->val, sizeof(irk->val));
+
+ mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
+}
+
static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
u8 data_len)
{
@@ -4590,11 +5146,29 @@ static void unpair_device_rsp(struct pending_cmd *cmd, void *data)
}
void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
- u8 link_type, u8 addr_type, u8 reason)
+ u8 link_type, u8 addr_type, u8 reason,
+ bool mgmt_connected)
{
struct mgmt_ev_device_disconnected ev;
+ struct pending_cmd *power_off;
struct sock *sk = NULL;
+ power_off = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev);
+ if (power_off) {
+ struct mgmt_mode *cp = power_off->param;
+
+ /* The connection is still in hci_conn_hash so test for 1
+ * instead of 0 to know if this is the last one.
+ */
+ if (!cp->val && hci_conn_count(hdev) == 1) {
+ cancel_delayed_work(&hdev->power_off);
+ queue_work(hdev->req_workqueue, &hdev->power_off.work);
+ }
+ }
+
+ if (!mgmt_connected)
+ return;
+
if (link_type != ACL_LINK && link_type != LE_LINK)
return;
@@ -4649,6 +5223,20 @@ void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
u8 addr_type, u8 status)
{
struct mgmt_ev_connect_failed ev;
+ struct pending_cmd *power_off;
+
+ power_off = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev);
+ if (power_off) {
+ struct mgmt_mode *cp = power_off->param;
+
+ /* The connection is still in hci_conn_hash so test for 1
+ * instead of 0 to know if this is the last one.
+ */
+ if (!cp->val && hci_conn_count(hdev) == 1) {
+ cancel_delayed_work(&hdev->power_off);
+ queue_work(hdev->req_workqueue, &hdev->power_off.work);
+ }
+ }
bacpy(&ev.addr.bdaddr, bdaddr);
ev.addr.type = link_to_bdaddr(link_type, addr_type);
@@ -4910,6 +5498,43 @@ void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
hci_req_run(&req, NULL);
}
+void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
+{
+ struct cmd_lookup match = { NULL, hdev };
+ bool changed = false;
+
+ if (status) {
+ u8 mgmt_err = mgmt_status(status);
+
+ if (enable) {
+ if (test_and_clear_bit(HCI_SC_ENABLED,
+ &hdev->dev_flags))
+ new_settings(hdev, NULL);
+ clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ }
+
+ mgmt_pending_foreach(MGMT_OP_SET_SECURE_CONN, hdev,
+ cmd_status_rsp, &mgmt_err);
+ return;
+ }
+
+ if (enable) {
+ changed = !test_and_set_bit(HCI_SC_ENABLED, &hdev->dev_flags);
+ } else {
+ changed = test_and_clear_bit(HCI_SC_ENABLED, &hdev->dev_flags);
+ clear_bit(HCI_SC_ONLY, &hdev->dev_flags);
+ }
+
+ mgmt_pending_foreach(MGMT_OP_SET_SECURE_CONN, hdev,
+ settings_rsp, &match);
+
+ if (changed)
+ new_settings(hdev, match.sk);
+
+ if (match.sk)
+ sock_put(match.sk);
+}
+
static void sk_lookup(struct pending_cmd *cmd, void *data)
{
struct cmd_lookup *match = data;
@@ -4964,8 +5589,9 @@ void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
cmd ? cmd->sk : NULL);
}
-void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
- u8 *randomizer, u8 status)
+void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
+ u8 *randomizer192, u8 *hash256,
+ u8 *randomizer256, u8 status)
{
struct pending_cmd *cmd;
@@ -4979,13 +5605,32 @@ void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
mgmt_status(status));
} else {
- struct mgmt_rp_read_local_oob_data rp;
+ if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
+ hash256 && randomizer256) {
+ struct mgmt_rp_read_local_oob_ext_data rp;
+
+ memcpy(rp.hash192, hash192, sizeof(rp.hash192));
+ memcpy(rp.randomizer192, randomizer192,
+ sizeof(rp.randomizer192));
+
+ memcpy(rp.hash256, hash256, sizeof(rp.hash256));
+ memcpy(rp.randomizer256, randomizer256,
+ sizeof(rp.randomizer256));
+
+ cmd_complete(cmd->sk, hdev->id,
+ MGMT_OP_READ_LOCAL_OOB_DATA, 0,
+ &rp, sizeof(rp));
+ } else {
+ struct mgmt_rp_read_local_oob_data rp;
- memcpy(rp.hash, hash, sizeof(rp.hash));
- memcpy(rp.randomizer, randomizer, sizeof(rp.randomizer));
+ memcpy(rp.hash, hash192, sizeof(rp.hash));
+ memcpy(rp.randomizer, randomizer192,
+ sizeof(rp.randomizer));
- cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
- 0, &rp, sizeof(rp));
+ cmd_complete(cmd->sk, hdev->id,
+ MGMT_OP_READ_LOCAL_OOB_DATA, 0,
+ &rp, sizeof(rp));
+ }
}
mgmt_pending_remove(cmd);
@@ -4997,6 +5642,7 @@ void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
{
char buf[512];
struct mgmt_ev_device_found *ev = (void *) buf;
+ struct smp_irk *irk;
size_t ev_size;
if (!hci_discovery_active(hdev))
@@ -5008,8 +5654,15 @@ void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
memset(buf, 0, sizeof(buf));
- bacpy(&ev->addr.bdaddr, bdaddr);
- ev->addr.type = link_to_bdaddr(link_type, addr_type);
+ irk = hci_get_irk(hdev, bdaddr, addr_type);
+ if (irk) {
+ bacpy(&ev->addr.bdaddr, &irk->bdaddr);
+ ev->addr.type = link_to_bdaddr(link_type, irk->addr_type);
+ } else {
+ bacpy(&ev->addr.bdaddr, bdaddr);
+ ev->addr.type = link_to_bdaddr(link_type, addr_type);
+ }
+
ev->rssi = rssi;
if (cfm_name)
ev->flags |= __constant_cpu_to_le32(MGMT_DEV_FOUND_CONFIRM_NAME);
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index facd8a79c038..21e15318937c 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -216,6 +216,7 @@ static int rfcomm_check_security(struct rfcomm_dlc *d)
switch (d->sec_level) {
case BT_SECURITY_HIGH:
+ case BT_SECURITY_FIPS:
auth_type = HCI_AT_GENERAL_BONDING_MITM;
break;
case BT_SECURITY_MEDIUM:
@@ -359,6 +360,11 @@ static struct rfcomm_dlc *rfcomm_dlc_get(struct rfcomm_session *s, u8 dlci)
return NULL;
}
+static int rfcomm_check_channel(u8 channel)
+{
+ return channel < 1 || channel > 30;
+}
+
static int __rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel)
{
struct rfcomm_session *s;
@@ -368,7 +374,7 @@ static int __rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst,
BT_DBG("dlc %p state %ld %pMR -> %pMR channel %d",
d, d->state, src, dst, channel);
- if (channel < 1 || channel > 30)
+ if (rfcomm_check_channel(channel))
return -EINVAL;
if (d->state != BT_OPEN && d->state != BT_CLOSED)
@@ -425,6 +431,20 @@ int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 chann
return r;
}
+static void __rfcomm_dlc_disconn(struct rfcomm_dlc *d)
+{
+ struct rfcomm_session *s = d->session;
+
+ d->state = BT_DISCONN;
+ if (skb_queue_empty(&d->tx_queue)) {
+ rfcomm_send_disc(s, d->dlci);
+ rfcomm_dlc_set_timer(d, RFCOMM_DISC_TIMEOUT);
+ } else {
+ rfcomm_queue_disc(d);
+ rfcomm_dlc_set_timer(d, RFCOMM_DISC_TIMEOUT * 2);
+ }
+}
+
static int __rfcomm_dlc_close(struct rfcomm_dlc *d, int err)
{
struct rfcomm_session *s = d->session;
@@ -437,32 +457,29 @@ static int __rfcomm_dlc_close(struct rfcomm_dlc *d, int err)
switch (d->state) {
case BT_CONNECT:
case BT_CONFIG:
+ 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();
- break;
+ return 0;
}
- /* Fall through */
+ }
+ switch (d->state) {
+ case BT_CONNECT:
case BT_CONNECTED:
- d->state = BT_DISCONN;
- if (skb_queue_empty(&d->tx_queue)) {
- rfcomm_send_disc(s, d->dlci);
- rfcomm_dlc_set_timer(d, RFCOMM_DISC_TIMEOUT);
- } else {
- rfcomm_queue_disc(d);
- rfcomm_dlc_set_timer(d, RFCOMM_DISC_TIMEOUT * 2);
- }
+ __rfcomm_dlc_disconn(d);
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();
+ case BT_CONFIG:
+ if (s->state != BT_BOUND) {
+ __rfcomm_dlc_disconn(d);
break;
}
- /* Fall through */
+ /* if closing a dlc in a session that hasn't been started,
+ * just close and unlink the dlc
+ */
default:
rfcomm_dlc_clear_timer(d);
@@ -513,6 +530,25 @@ no_session:
return r;
}
+struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel)
+{
+ struct rfcomm_session *s;
+ struct rfcomm_dlc *dlc = NULL;
+ u8 dlci;
+
+ if (rfcomm_check_channel(channel))
+ return ERR_PTR(-EINVAL);
+
+ rfcomm_lock();
+ s = rfcomm_session_get(src, dst);
+ if (s) {
+ dlci = __dlci(!s->initiator, channel);
+ dlc = rfcomm_dlc_get(s, dlci);
+ }
+ rfcomm_unlock();
+ return dlc;
+}
+
int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb)
{
int len = skb->len;
@@ -533,6 +569,20 @@ int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb)
return len;
}
+void rfcomm_dlc_send_noerror(struct rfcomm_dlc *d, struct sk_buff *skb)
+{
+ int len = skb->len;
+
+ BT_DBG("dlc %p mtu %d len %d", d, d->mtu, len);
+
+ rfcomm_make_uih(skb, d->addr);
+ skb_queue_tail(&d->tx_queue, skb);
+
+ if (d->state == BT_CONNECTED &&
+ !test_bit(RFCOMM_TX_THROTTLED, &d->flags))
+ rfcomm_schedule();
+}
+
void __rfcomm_dlc_throttle(struct rfcomm_dlc *d)
{
BT_DBG("dlc %p state %ld", d, d->state);
@@ -1943,12 +1993,11 @@ static void rfcomm_process_sessions(void)
continue;
}
- if (s->state == BT_LISTEN) {
+ switch (s->state) {
+ case BT_LISTEN:
rfcomm_accept_connection(s);
continue;
- }
- switch (s->state) {
case BT_BOUND:
s = rfcomm_check_connection(s);
break;
@@ -2085,7 +2134,8 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
set_bit(RFCOMM_SEC_PENDING, &d->flags);
rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
continue;
- } else if (d->sec_level == BT_SECURITY_HIGH) {
+ } else if (d->sec_level == BT_SECURITY_HIGH ||
+ d->sec_level == BT_SECURITY_FIPS) {
set_bit(RFCOMM_ENC_DROP, &d->flags);
continue;
}
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 3c2d3e4aa2f5..c024e715512f 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -105,13 +105,18 @@ static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
}
/* ---- Socket functions ---- */
-static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
+static struct sock *__rfcomm_get_listen_sock_by_addr(u8 channel, bdaddr_t *src)
{
struct sock *sk = NULL;
sk_for_each(sk, &rfcomm_sk_list.head) {
- if (rfcomm_pi(sk)->channel == channel &&
- !bacmp(&rfcomm_pi(sk)->src, src))
+ if (rfcomm_pi(sk)->channel != channel)
+ continue;
+
+ if (bacmp(&rfcomm_pi(sk)->src, src))
+ continue;
+
+ if (sk->sk_state == BT_BOUND || sk->sk_state == BT_LISTEN)
break;
}
@@ -331,6 +336,7 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr
{
struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
struct sock *sk = sock->sk;
+ int chan = sa->rc_channel;
int err = 0;
BT_DBG("sk %p %pMR", sk, &sa->rc_bdaddr);
@@ -352,12 +358,12 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr
write_lock(&rfcomm_sk_list.lock);
- if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) {
+ if (chan && __rfcomm_get_listen_sock_by_addr(chan, &sa->rc_bdaddr)) {
err = -EADDRINUSE;
} else {
/* Save source address */
bacpy(&rfcomm_pi(sk)->src, &sa->rc_bdaddr);
- rfcomm_pi(sk)->channel = sa->rc_channel;
+ rfcomm_pi(sk)->channel = chan;
sk->sk_state = BT_BOUND;
}
@@ -439,7 +445,7 @@ static int rfcomm_sock_listen(struct socket *sock, int backlog)
write_lock(&rfcomm_sk_list.lock);
for (channel = 1; channel < 31; channel++)
- if (!__rfcomm_get_sock_by_addr(channel, src)) {
+ if (!__rfcomm_get_listen_sock_by_addr(channel, src)) {
rfcomm_pi(sk)->channel = channel;
err = 0;
break;
@@ -528,6 +534,9 @@ static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *
BT_DBG("sock %p, sk %p", sock, sk);
+ if (peer && sk->sk_state != BT_CONNECTED)
+ return -ENOTCONN;
+
memset(sa, 0, sizeof(*sa));
sa->rc_family = AF_BLUETOOTH;
sa->rc_channel = rfcomm_pi(sk)->channel;
@@ -648,6 +657,11 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u
break;
}
+ if (opt & RFCOMM_LM_FIPS) {
+ err = -EINVAL;
+ break;
+ }
+
if (opt & RFCOMM_LM_AUTH)
rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
if (opt & RFCOMM_LM_ENCRYPT)
@@ -762,7 +776,11 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u
break;
case BT_SECURITY_HIGH:
opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
- RFCOMM_LM_SECURE;
+ RFCOMM_LM_SECURE;
+ break;
+ case BT_SECURITY_FIPS:
+ opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
+ RFCOMM_LM_SECURE | RFCOMM_LM_FIPS;
break;
default:
opt = 0;
@@ -774,6 +792,7 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
+
break;
case RFCOMM_CONNINFO:
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index f9c0980abeea..403ec09f480a 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -40,6 +40,7 @@
#define RFCOMM_TTY_MAJOR 216 /* device node major id of the usb/bluetooth.c driver */
#define RFCOMM_TTY_MINOR 0
+static DEFINE_MUTEX(rfcomm_ioctl_mutex);
static struct tty_driver *rfcomm_tty_driver;
struct rfcomm_dev {
@@ -51,6 +52,8 @@ struct rfcomm_dev {
unsigned long flags;
int err;
+ unsigned long status; /* don't export to userspace */
+
bdaddr_t src;
bdaddr_t dst;
u8 channel;
@@ -58,7 +61,6 @@ struct rfcomm_dev {
uint modem_status;
struct rfcomm_dlc *dlc;
- wait_queue_head_t conn_wait;
struct device *tty_dev;
@@ -83,10 +85,6 @@ static void rfcomm_dev_destruct(struct tty_port *port)
BT_DBG("dev %p dlc %p", dev, dlc);
- spin_lock(&rfcomm_dev_lock);
- list_del(&dev->list);
- spin_unlock(&rfcomm_dev_lock);
-
rfcomm_dlc_lock(dlc);
/* Detach DLC if it's owned by this dev */
if (dlc->owner == dev)
@@ -95,7 +93,12 @@ static void rfcomm_dev_destruct(struct tty_port *port)
rfcomm_dlc_put(dlc);
- tty_unregister_device(rfcomm_tty_driver, dev->id);
+ if (dev->tty_dev)
+ tty_unregister_device(rfcomm_tty_driver, dev->id);
+
+ spin_lock(&rfcomm_dev_lock);
+ list_del(&dev->list);
+ spin_unlock(&rfcomm_dev_lock);
kfree(dev);
@@ -104,60 +107,24 @@ static void rfcomm_dev_destruct(struct tty_port *port)
module_put(THIS_MODULE);
}
-static struct device *rfcomm_get_device(struct rfcomm_dev *dev)
-{
- struct hci_dev *hdev;
- struct hci_conn *conn;
-
- hdev = hci_get_route(&dev->dst, &dev->src);
- if (!hdev)
- return NULL;
-
- conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &dev->dst);
-
- hci_dev_put(hdev);
-
- return conn ? &conn->dev : NULL;
-}
-
/* device-specific initialization: open the dlc */
static int rfcomm_dev_activate(struct tty_port *port, struct tty_struct *tty)
{
struct rfcomm_dev *dev = container_of(port, struct rfcomm_dev, port);
- DEFINE_WAIT(wait);
int err;
err = rfcomm_dlc_open(dev->dlc, &dev->src, &dev->dst, dev->channel);
if (err)
- return err;
-
- while (1) {
- prepare_to_wait(&dev->conn_wait, &wait, TASK_INTERRUPTIBLE);
-
- if (dev->dlc->state == BT_CLOSED) {
- err = -dev->err;
- break;
- }
-
- if (dev->dlc->state == BT_CONNECTED)
- break;
-
- if (signal_pending(current)) {
- err = -ERESTARTSYS;
- break;
- }
-
- tty_unlock(tty);
- schedule();
- tty_lock(tty);
- }
- finish_wait(&dev->conn_wait, &wait);
+ set_bit(TTY_IO_ERROR, &tty->flags);
+ return err;
+}
- if (!err)
- device_move(dev->tty_dev, rfcomm_get_device(dev),
- DPM_ORDER_DEV_AFTER_PARENT);
+/* we block the open until the dlc->state becomes BT_CONNECTED */
+static int rfcomm_dev_carrier_raised(struct tty_port *port)
+{
+ struct rfcomm_dev *dev = container_of(port, struct rfcomm_dev, port);
- return err;
+ return (dev->dlc->state == BT_CONNECTED);
}
/* device-specific cleanup: close the dlc */
@@ -176,9 +143,10 @@ static const struct tty_port_operations rfcomm_port_ops = {
.destruct = rfcomm_dev_destruct,
.activate = rfcomm_dev_activate,
.shutdown = rfcomm_dev_shutdown,
+ .carrier_raised = rfcomm_dev_carrier_raised,
};
-static struct rfcomm_dev *__rfcomm_dev_get(int id)
+static struct rfcomm_dev *__rfcomm_dev_lookup(int id)
{
struct rfcomm_dev *dev;
@@ -195,20 +163,41 @@ static struct rfcomm_dev *rfcomm_dev_get(int id)
spin_lock(&rfcomm_dev_lock);
- dev = __rfcomm_dev_get(id);
+ dev = __rfcomm_dev_lookup(id);
- if (dev) {
- if (test_bit(RFCOMM_TTY_RELEASED, &dev->flags))
- dev = NULL;
- else
- tty_port_get(&dev->port);
- }
+ if (dev && !tty_port_get(&dev->port))
+ dev = NULL;
spin_unlock(&rfcomm_dev_lock);
return dev;
}
+static void rfcomm_reparent_device(struct rfcomm_dev *dev)
+{
+ struct hci_dev *hdev;
+ struct hci_conn *conn;
+
+ hdev = hci_get_route(&dev->dst, &dev->src);
+ if (!hdev)
+ return;
+
+ /* The lookup results are unsafe to access without the
+ * hci device lock (FIXME: why is this not documented?)
+ */
+ hci_dev_lock(hdev);
+ conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &dev->dst);
+
+ /* Just because the acl link is in the hash table is no
+ * guarantee the sysfs device has been added ...
+ */
+ if (conn && device_is_registered(&conn->dev))
+ device_move(dev->tty_dev, &conn->dev, DPM_ORDER_DEV_AFTER_PARENT);
+
+ hci_dev_unlock(hdev);
+ hci_dev_put(hdev);
+}
+
static ssize_t show_address(struct device *tty_dev, struct device_attribute *attr, char *buf)
{
struct rfcomm_dev *dev = dev_get_drvdata(tty_dev);
@@ -224,17 +213,16 @@ static ssize_t show_channel(struct device *tty_dev, struct device_attribute *att
static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
static DEVICE_ATTR(channel, S_IRUGO, show_channel, NULL);
-static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
+static struct rfcomm_dev *__rfcomm_dev_add(struct rfcomm_dev_req *req,
+ struct rfcomm_dlc *dlc)
{
struct rfcomm_dev *dev, *entry;
struct list_head *head = &rfcomm_dev_list;
int err = 0;
- BT_DBG("id %d channel %d", req->dev_id, req->channel);
-
dev = kzalloc(sizeof(struct rfcomm_dev), GFP_KERNEL);
if (!dev)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
spin_lock(&rfcomm_dev_lock);
@@ -282,7 +270,6 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
tty_port_init(&dev->port);
dev->port.ops = &rfcomm_port_ops;
- init_waitqueue_head(&dev->conn_wait);
skb_queue_head_init(&dev->pending);
@@ -318,22 +305,37 @@ static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
holds reference to this module. */
__module_get(THIS_MODULE);
+ spin_unlock(&rfcomm_dev_lock);
+ return dev;
+
out:
spin_unlock(&rfcomm_dev_lock);
+ kfree(dev);
+ return ERR_PTR(err);
+}
+
+static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
+{
+ struct rfcomm_dev *dev;
+ struct device *tty;
+
+ BT_DBG("id %d channel %d", req->dev_id, req->channel);
- if (err < 0)
- goto free;
+ dev = __rfcomm_dev_add(req, dlc);
+ if (IS_ERR(dev)) {
+ rfcomm_dlc_put(dlc);
+ return PTR_ERR(dev);
+ }
- dev->tty_dev = tty_port_register_device(&dev->port, rfcomm_tty_driver,
+ tty = tty_port_register_device(&dev->port, rfcomm_tty_driver,
dev->id, NULL);
- if (IS_ERR(dev->tty_dev)) {
- err = PTR_ERR(dev->tty_dev);
- spin_lock(&rfcomm_dev_lock);
- list_del(&dev->list);
- spin_unlock(&rfcomm_dev_lock);
- goto free;
+ if (IS_ERR(tty)) {
+ tty_port_put(&dev->port);
+ return PTR_ERR(tty);
}
+ dev->tty_dev = tty;
+ rfcomm_reparent_device(dev);
dev_set_drvdata(dev->tty_dev, dev);
if (device_create_file(dev->tty_dev, &dev_attr_address) < 0)
@@ -343,24 +345,23 @@ out:
BT_ERR("Failed to create channel attribute");
return dev->id;
-
-free:
- kfree(dev);
- return err;
}
/* ---- Send buffer ---- */
-static inline unsigned int rfcomm_room(struct rfcomm_dlc *dlc)
+static inline unsigned int rfcomm_room(struct rfcomm_dev *dev)
{
- /* We can't let it be zero, because we don't get a callback
- when tx_credits becomes nonzero, hence we'd never wake up */
- return dlc->mtu * (dlc->tx_credits?:1);
+ struct rfcomm_dlc *dlc = dev->dlc;
+
+ /* Limit the outstanding number of packets not yet sent to 40 */
+ int pending = 40 - atomic_read(&dev->wmem_alloc);
+
+ return max(0, pending) * dlc->mtu;
}
static void rfcomm_wfree(struct sk_buff *skb)
{
struct rfcomm_dev *dev = (void *) skb->sk;
- atomic_sub(skb->truesize, &dev->wmem_alloc);
+ atomic_dec(&dev->wmem_alloc);
if (test_bit(RFCOMM_TTY_ATTACHED, &dev->flags))
tty_port_tty_wakeup(&dev->port);
tty_port_put(&dev->port);
@@ -369,28 +370,24 @@ static void rfcomm_wfree(struct sk_buff *skb)
static void rfcomm_set_owner_w(struct sk_buff *skb, struct rfcomm_dev *dev)
{
tty_port_get(&dev->port);
- atomic_add(skb->truesize, &dev->wmem_alloc);
+ atomic_inc(&dev->wmem_alloc);
skb->sk = (void *) dev;
skb->destructor = rfcomm_wfree;
}
static struct sk_buff *rfcomm_wmalloc(struct rfcomm_dev *dev, unsigned long size, gfp_t priority)
{
- if (atomic_read(&dev->wmem_alloc) < rfcomm_room(dev->dlc)) {
- struct sk_buff *skb = alloc_skb(size, priority);
- if (skb) {
- rfcomm_set_owner_w(skb, dev);
- return skb;
- }
- }
- return NULL;
+ struct sk_buff *skb = alloc_skb(size, priority);
+ if (skb)
+ rfcomm_set_owner_w(skb, dev);
+ return skb;
}
/* ---- Device IOCTLs ---- */
#define NOCAP_FLAGS ((1 << RFCOMM_REUSE_DLC) | (1 << RFCOMM_RELEASE_ONHUP))
-static int rfcomm_create_dev(struct sock *sk, void __user *arg)
+static int __rfcomm_create_dev(struct sock *sk, void __user *arg)
{
struct rfcomm_dev_req req;
struct rfcomm_dlc *dlc;
@@ -412,16 +409,22 @@ static int rfcomm_create_dev(struct sock *sk, void __user *arg)
dlc = rfcomm_pi(sk)->dlc;
rfcomm_dlc_hold(dlc);
} else {
+ /* Validate the channel is unused */
+ dlc = rfcomm_dlc_exists(&req.src, &req.dst, req.channel);
+ if (IS_ERR(dlc))
+ return PTR_ERR(dlc);
+ else if (dlc) {
+ rfcomm_dlc_put(dlc);
+ return -EBUSY;
+ }
dlc = rfcomm_dlc_alloc(GFP_KERNEL);
if (!dlc)
return -ENOMEM;
}
id = rfcomm_dev_add(&req, dlc);
- if (id < 0) {
- rfcomm_dlc_put(dlc);
+ if (id < 0)
return id;
- }
if (req.flags & (1 << RFCOMM_REUSE_DLC)) {
/* DLC is now used by device.
@@ -432,7 +435,7 @@ static int rfcomm_create_dev(struct sock *sk, void __user *arg)
return id;
}
-static int rfcomm_release_dev(void __user *arg)
+static int __rfcomm_release_dev(void __user *arg)
{
struct rfcomm_dev_req req;
struct rfcomm_dev *dev;
@@ -452,6 +455,12 @@ static int rfcomm_release_dev(void __user *arg)
return -EPERM;
}
+ /* only release once */
+ if (test_and_set_bit(RFCOMM_DEV_RELEASED, &dev->status)) {
+ tty_port_put(&dev->port);
+ return -EALREADY;
+ }
+
if (req.flags & (1 << RFCOMM_HANGUP_NOW))
rfcomm_dlc_close(dev->dlc, 0);
@@ -462,14 +471,35 @@ static int rfcomm_release_dev(void __user *arg)
tty_kref_put(tty);
}
- if (!test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags) &&
- !test_and_set_bit(RFCOMM_TTY_RELEASED, &dev->flags))
+ if (!test_bit(RFCOMM_TTY_OWNED, &dev->status))
tty_port_put(&dev->port);
tty_port_put(&dev->port);
return 0;
}
+static int rfcomm_create_dev(struct sock *sk, void __user *arg)
+{
+ int ret;
+
+ mutex_lock(&rfcomm_ioctl_mutex);
+ ret = __rfcomm_create_dev(sk, arg);
+ mutex_unlock(&rfcomm_ioctl_mutex);
+
+ return ret;
+}
+
+static int rfcomm_release_dev(void __user *arg)
+{
+ int ret;
+
+ mutex_lock(&rfcomm_ioctl_mutex);
+ ret = __rfcomm_release_dev(arg);
+ mutex_unlock(&rfcomm_ioctl_mutex);
+
+ return ret;
+}
+
static int rfcomm_get_dev_list(void __user *arg)
{
struct rfcomm_dev *dev;
@@ -497,7 +527,7 @@ static int rfcomm_get_dev_list(void __user *arg)
spin_lock(&rfcomm_dev_lock);
list_for_each_entry(dev, &rfcomm_dev_list, list) {
- if (test_bit(RFCOMM_TTY_RELEASED, &dev->flags))
+ if (!tty_port_get(&dev->port))
continue;
(di + n)->id = dev->id;
(di + n)->flags = dev->flags;
@@ -505,6 +535,7 @@ static int rfcomm_get_dev_list(void __user *arg)
(di + n)->channel = dev->channel;
bacpy(&(di + n)->src, &dev->src);
bacpy(&(di + n)->dst, &dev->dst);
+ tty_port_put(&dev->port);
if (++n >= dev_num)
break;
}
@@ -601,9 +632,11 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err)
BT_DBG("dlc %p dev %p err %d", dlc, dev, err);
dev->err = err;
- wake_up_interruptible(&dev->conn_wait);
+ if (dlc->state == BT_CONNECTED) {
+ rfcomm_reparent_device(dev);
- if (dlc->state == BT_CLOSED)
+ wake_up_interruptible(&dev->port.open_wait);
+ } else if (dlc->state == BT_CLOSED)
tty_port_tty_hangup(&dev->port, false);
}
@@ -703,8 +736,10 @@ static int rfcomm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
* when the last process closes the tty. The behaviour is expected by
* userspace.
*/
- if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags))
+ if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) {
+ set_bit(RFCOMM_TTY_OWNED, &dev->status);
tty_port_put(&dev->port);
+ }
return 0;
}
@@ -750,7 +785,7 @@ static int rfcomm_tty_write(struct tty_struct *tty, const unsigned char *buf, in
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
struct rfcomm_dlc *dlc = dev->dlc;
struct sk_buff *skb;
- int err = 0, sent = 0, size;
+ int sent = 0, size;
BT_DBG("tty %p count %d", tty, count);
@@ -758,7 +793,6 @@ static int rfcomm_tty_write(struct tty_struct *tty, const unsigned char *buf, in
size = min_t(uint, count, dlc->mtu);
skb = rfcomm_wmalloc(dev, size + RFCOMM_SKB_RESERVE, GFP_ATOMIC);
-
if (!skb)
break;
@@ -766,32 +800,24 @@ static int rfcomm_tty_write(struct tty_struct *tty, const unsigned char *buf, in
memcpy(skb_put(skb, size), buf + sent, size);
- err = rfcomm_dlc_send(dlc, skb);
- if (err < 0) {
- kfree_skb(skb);
- break;
- }
+ rfcomm_dlc_send_noerror(dlc, skb);
sent += size;
count -= size;
}
- return sent ? sent : err;
+ return sent;
}
static int rfcomm_tty_write_room(struct tty_struct *tty)
{
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
- int room;
+ int room = 0;
- BT_DBG("tty %p", tty);
-
- if (!dev || !dev->dlc)
- return 0;
+ if (dev && dev->dlc)
+ room = rfcomm_room(dev);
- room = rfcomm_room(dev->dlc) - atomic_read(&dev->wmem_alloc);
- if (room < 0)
- room = 0;
+ BT_DBG("tty %p room %d", tty, room);
return room;
}
@@ -1125,7 +1151,7 @@ int __init rfcomm_init_ttys(void)
rfcomm_tty_driver->subtype = SERIAL_TYPE_NORMAL;
rfcomm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
rfcomm_tty_driver->init_termios = tty_std_termios;
- rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ rfcomm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL;
rfcomm_tty_driver->init_termios.c_lflag &= ~ICANON;
tty_set_operations(rfcomm_tty_driver, &rfcomm_ops);
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 45007362683b..f886bcae1b7e 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -78,6 +78,70 @@ static int smp_e(struct crypto_blkcipher *tfm, const u8 *k, u8 *r)
return err;
}
+static int smp_ah(struct crypto_blkcipher *tfm, u8 irk[16], u8 r[3], u8 res[3])
+{
+ u8 _res[16], k[16];
+ int err;
+
+ /* r' = padding || r */
+ memset(_res, 0, 13);
+ _res[13] = r[2];
+ _res[14] = r[1];
+ _res[15] = r[0];
+
+ swap128(irk, k);
+ err = smp_e(tfm, k, _res);
+ if (err) {
+ BT_ERR("Encrypt error");
+ return err;
+ }
+
+ /* The output of the random address function ah is:
+ * ah(h, r) = e(k, r') mod 2^24
+ * The output of the security function e is then truncated to 24 bits
+ * by taking the least significant 24 bits of the output of e as the
+ * result of ah.
+ */
+ res[0] = _res[15];
+ res[1] = _res[14];
+ res[2] = _res[13];
+
+ return 0;
+}
+
+bool smp_irk_matches(struct crypto_blkcipher *tfm, u8 irk[16],
+ bdaddr_t *bdaddr)
+{
+ u8 hash[3];
+ int err;
+
+ BT_DBG("RPA %pMR IRK %*phN", bdaddr, 16, irk);
+
+ err = smp_ah(tfm, irk, &bdaddr->b[3], hash);
+ if (err)
+ return false;
+
+ return !memcmp(bdaddr->b, hash, 3);
+}
+
+int smp_generate_rpa(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *rpa)
+{
+ int err;
+
+ get_random_bytes(&rpa->b[3], 3);
+
+ rpa->b[5] &= 0x3f; /* Clear two most significant bits */
+ rpa->b[5] |= 0x40; /* Set second most significant bit */
+
+ err = smp_ah(tfm, irk, &rpa->b[3], rpa->b);
+ if (err < 0)
+ return err;
+
+ BT_DBG("RPA %pMR", rpa);
+
+ return 0;
+}
+
static int smp_c1(struct crypto_blkcipher *tfm, u8 k[16], u8 r[16],
u8 preq[7], u8 pres[7], u8 _iat, bdaddr_t *ia,
u8 _rat, bdaddr_t *ra, u8 res[16])
@@ -203,31 +267,45 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
struct smp_cmd_pairing *req,
struct smp_cmd_pairing *rsp, __u8 authreq)
{
- u8 dist_keys = 0;
+ struct smp_chan *smp = conn->smp_chan;
+ struct hci_conn *hcon = conn->hcon;
+ struct hci_dev *hdev = hcon->hdev;
+ u8 local_dist = 0, remote_dist = 0;
if (test_bit(HCI_PAIRABLE, &conn->hcon->hdev->dev_flags)) {
- dist_keys = SMP_DIST_ENC_KEY;
+ local_dist = SMP_DIST_ENC_KEY;
+ remote_dist = SMP_DIST_ENC_KEY;
authreq |= SMP_AUTH_BONDING;
} else {
authreq &= ~SMP_AUTH_BONDING;
}
+ if (test_bit(HCI_RPA_RESOLVING, &hdev->dev_flags))
+ remote_dist |= SMP_DIST_ID_KEY;
+
+ if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
+ local_dist |= SMP_DIST_ID_KEY;
+
if (rsp == NULL) {
req->io_capability = conn->hcon->io_capability;
req->oob_flag = SMP_OOB_NOT_PRESENT;
req->max_key_size = SMP_MAX_ENC_KEY_SIZE;
- req->init_key_dist = 0;
- req->resp_key_dist = dist_keys;
+ req->init_key_dist = local_dist;
+ req->resp_key_dist = remote_dist;
req->auth_req = (authreq & AUTH_REQ_MASK);
+
+ smp->remote_key_dist = remote_dist;
return;
}
rsp->io_capability = conn->hcon->io_capability;
rsp->oob_flag = SMP_OOB_NOT_PRESENT;
rsp->max_key_size = SMP_MAX_ENC_KEY_SIZE;
- rsp->init_key_dist = 0;
- rsp->resp_key_dist = req->resp_key_dist & dist_keys;
+ rsp->init_key_dist = req->init_key_dist & remote_dist;
+ rsp->resp_key_dist = req->resp_key_dist & local_dist;
rsp->auth_req = (authreq & AUTH_REQ_MASK);
+
+ smp->remote_key_dist = rsp->init_key_dist;
}
static u8 check_enc_key_size(struct l2cap_conn *conn, __u8 max_key_size)
@@ -356,29 +434,23 @@ static void confirm_work(struct work_struct *work)
{
struct smp_chan *smp = container_of(work, struct smp_chan, confirm);
struct l2cap_conn *conn = smp->conn;
- struct crypto_blkcipher *tfm;
+ struct hci_dev *hdev = conn->hcon->hdev;
+ struct crypto_blkcipher *tfm = hdev->tfm_aes;
struct smp_cmd_pairing_confirm cp;
int ret;
u8 res[16], reason;
BT_DBG("conn %p", conn);
- tfm = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
- if (IS_ERR(tfm)) {
- reason = SMP_UNSPECIFIED;
- goto error;
- }
+ /* Prevent mutual access to hdev->tfm_aes */
+ hci_dev_lock(hdev);
- smp->tfm = tfm;
+ ret = smp_c1(tfm, smp->tk, smp->prnd, smp->preq, smp->prsp,
+ conn->hcon->init_addr_type, &conn->hcon->init_addr,
+ conn->hcon->resp_addr_type, &conn->hcon->resp_addr, res);
+
+ hci_dev_unlock(hdev);
- if (conn->hcon->out)
- ret = smp_c1(tfm, smp->tk, smp->prnd, smp->preq, smp->prsp,
- conn->hcon->src_type, &conn->hcon->src,
- conn->hcon->dst_type, &conn->hcon->dst, res);
- else
- ret = smp_c1(tfm, smp->tk, smp->prnd, smp->preq, smp->prsp,
- conn->hcon->dst_type, &conn->hcon->dst,
- conn->hcon->src_type, &conn->hcon->src, res);
if (ret) {
reason = SMP_UNSPECIFIED;
goto error;
@@ -400,7 +472,8 @@ static void random_work(struct work_struct *work)
struct smp_chan *smp = container_of(work, struct smp_chan, random);
struct l2cap_conn *conn = smp->conn;
struct hci_conn *hcon = conn->hcon;
- struct crypto_blkcipher *tfm = smp->tfm;
+ struct hci_dev *hdev = hcon->hdev;
+ struct crypto_blkcipher *tfm = hdev->tfm_aes;
u8 reason, confirm[16], res[16], key[16];
int ret;
@@ -411,14 +484,15 @@ static void random_work(struct work_struct *work)
BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
- if (hcon->out)
- ret = smp_c1(tfm, smp->tk, smp->rrnd, smp->preq, smp->prsp,
- hcon->src_type, &hcon->src,
- hcon->dst_type, &hcon->dst, res);
- else
- ret = smp_c1(tfm, smp->tk, smp->rrnd, smp->preq, smp->prsp,
- hcon->dst_type, &hcon->dst,
- hcon->src_type, &hcon->src, res);
+ /* Prevent mutual access to hdev->tfm_aes */
+ hci_dev_lock(hdev);
+
+ ret = smp_c1(tfm, smp->tk, smp->rrnd, smp->preq, smp->prsp,
+ hcon->init_addr_type, &hcon->init_addr,
+ hcon->resp_addr_type, &hcon->resp_addr, res);
+
+ hci_dev_unlock(hdev);
+
if (ret) {
reason = SMP_UNSPECIFIED;
goto error;
@@ -433,11 +507,9 @@ static void random_work(struct work_struct *work)
}
if (hcon->out) {
- u8 stk[16], rand[8];
- __le16 ediv;
-
- memset(rand, 0, sizeof(rand));
- ediv = 0;
+ u8 stk[16];
+ __le64 rand = 0;
+ __le16 ediv = 0;
smp_s1(tfm, smp->tk, smp->rrnd, smp->prnd, key);
swap128(key, stk);
@@ -453,11 +525,9 @@ static void random_work(struct work_struct *work)
hci_le_start_enc(hcon, ediv, rand, stk);
hcon->enc_key_size = smp->enc_key_size;
} else {
- u8 stk[16], r[16], rand[8];
- __le16 ediv;
-
- memset(rand, 0, sizeof(rand));
- ediv = 0;
+ u8 stk[16], r[16];
+ __le64 rand = 0;
+ __le16 ediv = 0;
swap128(smp->prnd, r);
smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(r), r);
@@ -469,7 +539,7 @@ static void random_work(struct work_struct *work)
SMP_MAX_ENC_KEY_SIZE - smp->enc_key_size);
hci_add_ltk(hcon->hdev, &hcon->dst, hcon->dst_type,
- HCI_SMP_STK_SLAVE, 0, 0, stk, smp->enc_key_size,
+ HCI_SMP_STK_SLAVE, 0, stk, smp->enc_key_size,
ediv, rand);
}
@@ -479,6 +549,20 @@ error:
smp_failure(conn, reason);
}
+static void smp_reencrypt(struct work_struct *work)
+{
+ struct smp_chan *smp = container_of(work, struct smp_chan,
+ reencrypt.work);
+ struct l2cap_conn *conn = smp->conn;
+ struct hci_conn *hcon = conn->hcon;
+ struct smp_ltk *ltk = smp->ltk;
+
+ BT_DBG("");
+
+ hci_le_start_enc(hcon, ltk->ediv, ltk->rand, ltk->val);
+ hcon->enc_key_size = ltk->enc_size;
+}
+
static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
{
struct smp_chan *smp;
@@ -489,6 +573,7 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
INIT_WORK(&smp->confirm, confirm_work);
INIT_WORK(&smp->random, random_work);
+ INIT_DELAYED_WORK(&smp->reencrypt, smp_reencrypt);
smp->conn = conn;
conn->smp_chan = smp;
@@ -502,11 +587,32 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
void smp_chan_destroy(struct l2cap_conn *conn)
{
struct smp_chan *smp = conn->smp_chan;
+ bool complete;
BUG_ON(!smp);
- if (smp->tfm)
- crypto_free_blkcipher(smp->tfm);
+ cancel_delayed_work_sync(&smp->reencrypt);
+
+ complete = test_bit(SMP_FLAG_COMPLETE, &smp->smp_flags);
+ mgmt_smp_complete(conn->hcon, complete);
+
+ /* If pairing failed clean up any keys we might have */
+ if (!complete) {
+ if (smp->ltk) {
+ list_del(&smp->ltk->list);
+ kfree(smp->ltk);
+ }
+
+ if (smp->slave_ltk) {
+ list_del(&smp->slave_ltk->list);
+ kfree(smp->slave_ltk);
+ }
+
+ if (smp->remote_irk) {
+ list_del(&smp->remote_irk->list);
+ kfree(smp->remote_irk);
+ }
+ }
kfree(smp);
conn->smp_chan = NULL;
@@ -565,6 +671,9 @@ static u8 smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
BT_DBG("conn %p", conn);
+ if (skb->len < sizeof(*req))
+ return SMP_UNSPECIFIED;
+
if (conn->hcon->link_mode & HCI_LM_MASTER)
return SMP_CMD_NOTSUPP;
@@ -617,6 +726,9 @@ static u8 smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
BT_DBG("conn %p", conn);
+ if (skb->len < sizeof(*rsp))
+ return SMP_UNSPECIFIED;
+
if (!(conn->hcon->link_mode & HCI_LM_MASTER))
return SMP_CMD_NOTSUPP;
@@ -661,6 +773,9 @@ static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
+ if (skb->len < sizeof(smp->pcnf))
+ return SMP_UNSPECIFIED;
+
memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf));
skb_pull(skb, sizeof(smp->pcnf));
@@ -686,6 +801,9 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
BT_DBG("conn %p", conn);
+ if (skb->len < sizeof(smp->rrnd))
+ return SMP_UNSPECIFIED;
+
swap128(skb->data, smp->rrnd);
skb_pull(skb, sizeof(smp->rrnd));
@@ -699,7 +817,8 @@ static u8 smp_ltk_encrypt(struct l2cap_conn *conn, u8 sec_level)
struct smp_ltk *key;
struct hci_conn *hcon = conn->hcon;
- key = hci_find_ltk_by_addr(hcon->hdev, &hcon->dst, hcon->dst_type);
+ key = hci_find_ltk_by_addr(hcon->hdev, &hcon->dst, hcon->dst_type,
+ hcon->out);
if (!key)
return 0;
@@ -724,6 +843,9 @@ static u8 smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
BT_DBG("conn %p", conn);
+ if (skb->len < sizeof(*rp))
+ return SMP_UNSPECIFIED;
+
if (!(conn->hcon->link_mode & HCI_LM_MASTER))
return SMP_CMD_NOTSUPP;
@@ -813,6 +935,15 @@ static int smp_cmd_encrypt_info(struct l2cap_conn *conn, struct sk_buff *skb)
struct smp_cmd_encrypt_info *rp = (void *) skb->data;
struct smp_chan *smp = conn->smp_chan;
+ BT_DBG("conn %p", conn);
+
+ if (skb->len < sizeof(*rp))
+ return SMP_UNSPECIFIED;
+
+ /* Ignore this PDU if it wasn't requested */
+ if (!(smp->remote_key_dist & SMP_DIST_ENC_KEY))
+ return 0;
+
skb_pull(skb, sizeof(*rp));
memcpy(smp->tk, rp->ltk, sizeof(smp->tk));
@@ -826,21 +957,114 @@ static int smp_cmd_master_ident(struct l2cap_conn *conn, struct sk_buff *skb)
struct smp_chan *smp = conn->smp_chan;
struct hci_dev *hdev = conn->hcon->hdev;
struct hci_conn *hcon = conn->hcon;
+ struct smp_ltk *ltk;
u8 authenticated;
+ BT_DBG("conn %p", conn);
+
+ if (skb->len < sizeof(*rp))
+ return SMP_UNSPECIFIED;
+
+ /* Ignore this PDU if it wasn't requested */
+ if (!(smp->remote_key_dist & SMP_DIST_ENC_KEY))
+ return 0;
+
+ /* Mark the information as received */
+ smp->remote_key_dist &= ~SMP_DIST_ENC_KEY;
+
skb_pull(skb, sizeof(*rp));
hci_dev_lock(hdev);
authenticated = (hcon->sec_level == BT_SECURITY_HIGH);
- hci_add_ltk(hdev, &hcon->dst, hcon->dst_type, HCI_SMP_LTK, 1,
- authenticated, smp->tk, smp->enc_key_size,
- rp->ediv, rp->rand);
- smp_distribute_keys(conn, 1);
+ ltk = hci_add_ltk(hdev, &hcon->dst, hcon->dst_type, HCI_SMP_LTK,
+ authenticated, smp->tk, smp->enc_key_size,
+ rp->ediv, rp->rand);
+ smp->ltk = ltk;
+ if (!(smp->remote_key_dist & SMP_DIST_ID_KEY))
+ smp_distribute_keys(conn);
hci_dev_unlock(hdev);
return 0;
}
+static int smp_cmd_ident_info(struct l2cap_conn *conn, struct sk_buff *skb)
+{
+ struct smp_cmd_ident_info *info = (void *) skb->data;
+ struct smp_chan *smp = conn->smp_chan;
+
+ BT_DBG("");
+
+ if (skb->len < sizeof(*info))
+ return SMP_UNSPECIFIED;
+
+ /* Ignore this PDU if it wasn't requested */
+ if (!(smp->remote_key_dist & SMP_DIST_ID_KEY))
+ return 0;
+
+ skb_pull(skb, sizeof(*info));
+
+ memcpy(smp->irk, info->irk, 16);
+
+ return 0;
+}
+
+static int smp_cmd_ident_addr_info(struct l2cap_conn *conn,
+ struct sk_buff *skb)
+{
+ struct smp_cmd_ident_addr_info *info = (void *) skb->data;
+ struct smp_chan *smp = conn->smp_chan;
+ struct hci_conn *hcon = conn->hcon;
+ bdaddr_t rpa;
+
+ BT_DBG("");
+
+ if (skb->len < sizeof(*info))
+ return SMP_UNSPECIFIED;
+
+ /* Ignore this PDU if it wasn't requested */
+ if (!(smp->remote_key_dist & SMP_DIST_ID_KEY))
+ return 0;
+
+ /* Mark the information as received */
+ smp->remote_key_dist &= ~SMP_DIST_ID_KEY;
+
+ skb_pull(skb, sizeof(*info));
+
+ /* Strictly speaking the Core Specification (4.1) allows sending
+ * an empty address which would force us to rely on just the IRK
+ * as "identity information". However, since such
+ * implementations are not known of and in order to not over
+ * complicate our implementation, simply pretend that we never
+ * received an IRK for such a device.
+ */
+ if (!bacmp(&info->bdaddr, BDADDR_ANY)) {
+ BT_ERR("Ignoring IRK with no identity address");
+ smp_distribute_keys(conn);
+ return 0;
+ }
+
+ bacpy(&smp->id_addr, &info->bdaddr);
+ smp->id_addr_type = info->addr_type;
+
+ if (hci_bdaddr_is_rpa(&hcon->dst, hcon->dst_type))
+ bacpy(&rpa, &hcon->dst);
+ else
+ bacpy(&rpa, BDADDR_ANY);
+
+ smp->remote_irk = hci_add_irk(conn->hcon->hdev, &smp->id_addr,
+ smp->id_addr_type, smp->irk, &rpa);
+
+ /* Track the connection based on the Identity Address from now on */
+ bacpy(&hcon->dst, &smp->id_addr);
+ hcon->dst_type = smp->id_addr_type;
+
+ l2cap_conn_update_id_addr(hcon);
+
+ smp_distribute_keys(conn);
+
+ return 0;
+}
+
int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
{
struct hci_conn *hcon = conn->hcon;
@@ -915,7 +1139,13 @@ int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
break;
case SMP_CMD_IDENT_INFO:
+ reason = smp_cmd_ident_info(conn, skb);
+ break;
+
case SMP_CMD_IDENT_ADDR_INFO:
+ reason = smp_cmd_ident_addr_info(conn, skb);
+ break;
+
case SMP_CMD_SIGN_INFO:
/* Just ignored */
reason = 0;
@@ -937,26 +1167,51 @@ done:
return err;
}
-int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
+static void smp_notify_keys(struct l2cap_conn *conn)
+{
+ struct smp_chan *smp = conn->smp_chan;
+ struct hci_conn *hcon = conn->hcon;
+ struct hci_dev *hdev = hcon->hdev;
+
+ if (smp->remote_irk)
+ mgmt_new_irk(hdev, smp->remote_irk);
+
+ if (smp->ltk) {
+ smp->ltk->bdaddr_type = hcon->dst_type;
+ bacpy(&smp->ltk->bdaddr, &hcon->dst);
+ mgmt_new_ltk(hdev, smp->ltk);
+ }
+
+ if (smp->slave_ltk) {
+ smp->slave_ltk->bdaddr_type = hcon->dst_type;
+ bacpy(&smp->slave_ltk->bdaddr, &hcon->dst);
+ mgmt_new_ltk(hdev, smp->slave_ltk);
+ }
+}
+
+int smp_distribute_keys(struct l2cap_conn *conn)
{
struct smp_cmd_pairing *req, *rsp;
struct smp_chan *smp = conn->smp_chan;
+ struct hci_conn *hcon = conn->hcon;
+ struct hci_dev *hdev = hcon->hdev;
+ bool ltk_encrypt;
__u8 *keydist;
- BT_DBG("conn %p force %d", conn, force);
+ BT_DBG("conn %p", conn);
- if (!test_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->flags))
+ if (!test_bit(HCI_CONN_LE_SMP_PEND, &hcon->flags))
return 0;
rsp = (void *) &smp->prsp[1];
/* The responder sends its keys first */
- if (!force && conn->hcon->out && (rsp->resp_key_dist & 0x07))
+ if (hcon->out && (smp->remote_key_dist & 0x07))
return 0;
req = (void *) &smp->preq[1];
- if (conn->hcon->out) {
+ if (hcon->out) {
keydist = &rsp->init_key_dist;
*keydist &= req->init_key_dist;
} else {
@@ -964,28 +1219,30 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
*keydist &= req->resp_key_dist;
}
-
BT_DBG("keydist 0x%x", *keydist);
if (*keydist & SMP_DIST_ENC_KEY) {
struct smp_cmd_encrypt_info enc;
struct smp_cmd_master_ident ident;
- struct hci_conn *hcon = conn->hcon;
+ struct smp_ltk *ltk;
u8 authenticated;
__le16 ediv;
+ __le64 rand;
get_random_bytes(enc.ltk, sizeof(enc.ltk));
get_random_bytes(&ediv, sizeof(ediv));
- get_random_bytes(ident.rand, sizeof(ident.rand));
+ get_random_bytes(&rand, sizeof(rand));
smp_send_cmd(conn, SMP_CMD_ENCRYPT_INFO, sizeof(enc), &enc);
authenticated = hcon->sec_level == BT_SECURITY_HIGH;
- hci_add_ltk(hcon->hdev, &hcon->dst, hcon->dst_type,
- HCI_SMP_LTK_SLAVE, 1, authenticated,
- enc.ltk, smp->enc_key_size, ediv, ident.rand);
+ ltk = hci_add_ltk(hdev, &hcon->dst, hcon->dst_type,
+ HCI_SMP_LTK_SLAVE, authenticated, enc.ltk,
+ smp->enc_key_size, ediv, rand);
+ smp->slave_ltk = ltk;
ident.ediv = ediv;
+ ident.rand = rand;
smp_send_cmd(conn, SMP_CMD_MASTER_IDENT, sizeof(ident), &ident);
@@ -996,14 +1253,18 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
struct smp_cmd_ident_addr_info addrinfo;
struct smp_cmd_ident_info idinfo;
- /* Send a dummy key */
- get_random_bytes(idinfo.irk, sizeof(idinfo.irk));
+ memcpy(idinfo.irk, hdev->irk, sizeof(idinfo.irk));
smp_send_cmd(conn, SMP_CMD_IDENT_INFO, sizeof(idinfo), &idinfo);
- /* Just public address */
- memset(&addrinfo, 0, sizeof(addrinfo));
- bacpy(&addrinfo.bdaddr, &conn->hcon->src);
+ /* The hci_conn contains the local identity address
+ * after the connection has been established.
+ *
+ * This is true even when the connection has been
+ * established using a resolvable random address.
+ */
+ bacpy(&addrinfo.bdaddr, &hcon->src);
+ addrinfo.addr_type = hcon->src_type;
smp_send_cmd(conn, SMP_CMD_IDENT_ADDR_INFO, sizeof(addrinfo),
&addrinfo);
@@ -1022,9 +1283,34 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
*keydist &= ~SMP_DIST_SIGN;
}
- if (conn->hcon->out || force) {
- clear_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->flags);
+ /* If there are still keys to be received wait for them */
+ if ((smp->remote_key_dist & 0x07))
+ return 0;
+
+ /* Check if we should try to re-encrypt the link with the LTK.
+ * SMP_FLAG_LTK_ENCRYPT flag is used to track whether we've
+ * already tried this (in which case we shouldn't try again).
+ *
+ * The request will trigger an encryption key refresh event
+ * which will cause a call to auth_cfm and eventually lead to
+ * l2cap_core.c calling this smp_distribute_keys function again
+ * and thereby completing the process.
+ */
+ if (smp->ltk)
+ ltk_encrypt = !test_and_set_bit(SMP_FLAG_LTK_ENCRYPT,
+ &smp->smp_flags);
+ else
+ ltk_encrypt = false;
+
+ /* Re-encrypt the link with LTK if possible */
+ if (ltk_encrypt && hcon->out) {
+ queue_delayed_work(hdev->req_workqueue, &smp->reencrypt,
+ SMP_REENCRYPT_TIMEOUT);
+ } else {
+ clear_bit(HCI_CONN_LE_SMP_PEND, &hcon->flags);
cancel_delayed_work_sync(&conn->security_timer);
+ set_bit(SMP_FLAG_COMPLETE, &smp->smp_flags);
+ smp_notify_keys(conn);
smp_chan_destroy(conn);
}
diff --git a/net/bluetooth/smp.h b/net/bluetooth/smp.h
index a700bcb490d7..f55d83617218 100644
--- a/net/bluetooth/smp.h
+++ b/net/bluetooth/smp.h
@@ -78,7 +78,7 @@ struct smp_cmd_encrypt_info {
#define SMP_CMD_MASTER_IDENT 0x07
struct smp_cmd_master_ident {
__le16 ediv;
- __u8 rand[8];
+ __le64 rand;
} __packed;
#define SMP_CMD_IDENT_INFO 0x08
@@ -118,6 +118,10 @@ struct smp_cmd_security_req {
#define SMP_FLAG_TK_VALID 1
#define SMP_FLAG_CFM_PENDING 2
#define SMP_FLAG_MITM_AUTH 3
+#define SMP_FLAG_LTK_ENCRYPT 4
+#define SMP_FLAG_COMPLETE 5
+
+#define SMP_REENCRYPT_TIMEOUT msecs_to_jiffies(250)
struct smp_chan {
struct l2cap_conn *conn;
@@ -128,20 +132,30 @@ struct smp_chan {
u8 pcnf[16]; /* SMP Pairing Confirm */
u8 tk[16]; /* SMP Temporary Key */
u8 enc_key_size;
+ u8 remote_key_dist;
+ bdaddr_t id_addr;
+ u8 id_addr_type;
+ u8 irk[16];
+ struct smp_ltk *ltk;
+ struct smp_ltk *slave_ltk;
+ struct smp_irk *remote_irk;
unsigned long smp_flags;
- struct crypto_blkcipher *tfm;
struct work_struct confirm;
struct work_struct random;
-
+ struct delayed_work reencrypt;
};
/* SMP Commands */
bool smp_sufficient_security(struct hci_conn *hcon, u8 sec_level);
int smp_conn_security(struct hci_conn *hcon, __u8 sec_level);
int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
-int smp_distribute_keys(struct l2cap_conn *conn, __u8 force);
+int smp_distribute_keys(struct l2cap_conn *conn);
int smp_user_confirm_reply(struct hci_conn *conn, u16 mgmt_op, __le32 passkey);
void smp_chan_destroy(struct l2cap_conn *conn);
+bool smp_irk_matches(struct crypto_blkcipher *tfm, u8 irk[16],
+ bdaddr_t *bdaddr);
+int smp_generate_rpa(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *rpa);
+
#endif /* __SMP_H */
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