cp.pscan_rep_mode = ie->data.pscan_rep_mode;
cp.pscan_mode = ie->data.pscan_mode;
cp.clock_offset = ie->data.clock_offset |
- __constant_cpu_to_le16(0x8000);
+ cpu_to_le16(0x8000);
}
memcpy(conn->dev_class, ie->data.dev_class, 3);
cp.handle = cpu_to_le16(handle);
- cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40);
- cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40);
+ cp.tx_bandwidth = cpu_to_le32(0x00001f40);
+ cp.rx_bandwidth = cpu_to_le32(0x00001f40);
cp.voice_setting = cpu_to_le16(conn->setting);
switch (conn->setting & SCO_AIRMODE_MASK) {
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 = cpu_to_le16(0x0000);
+ cp.max_ce_len = 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;
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);
}
if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) {
struct hci_cp_sniff_subrate cp;
cp.handle = cpu_to_le16(conn->handle);
- cp.max_latency = __constant_cpu_to_le16(0);
- cp.min_remote_timeout = __constant_cpu_to_le16(0);
- cp.min_local_timeout = __constant_cpu_to_le16(0);
+ cp.max_latency = cpu_to_le16(0);
+ cp.min_remote_timeout = cpu_to_le16(0);
+ cp.min_local_timeout = cpu_to_le16(0);
hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp);
}
cp.handle = cpu_to_le16(conn->handle);
cp.max_interval = cpu_to_le16(hdev->sniff_max_interval);
cp.min_interval = cpu_to_le16(hdev->sniff_min_interval);
- cp.attempt = __constant_cpu_to_le16(4);
- cp.timeout = __constant_cpu_to_le16(1);
+ cp.attempt = cpu_to_le16(4);
+ cp.timeout = cpu_to_le16(1);
hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp);
}
}
&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);
+ struct hci_dev *hdev = conn->hdev;
+
+ BT_DBG("");
+
+ /* We could end up here due to having done directed advertising,
+ * so clean up the state if necessary. This should however only
+ * happen with broken hardware or if low duty cycle was used
+ * (which doesn't have a timeout of its own).
+ */
+ if (test_bit(HCI_ADVERTISING, &hdev->dev_flags)) {
+ u8 enable = 0x00;
+ hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable),
+ &enable);
+ hci_le_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT);
+ return;
+ }
+
+ 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;
conn->io_capability = hdev->io_capability;
conn->remote_auth = 0xff;
conn->key_type = 0xff;
+ conn->tx_power = HCI_TX_POWER_INVALID;
+ conn->max_tx_power = HCI_TX_POWER_INVALID;
set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
conn->disc_timeout = HCI_DISCONN_TIMEOUT;
case ACL_LINK:
conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK;
break;
+ case LE_LINK:
+ /* conn->src should reflect the local identity address */
+ hci_copy_identity_address(hdev, &conn->src, &conn->src_type);
+ break;
case SCO_LINK:
if (lmp_esco_capable(hdev))
conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
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);
/* 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
}
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);
+
+ /* Re-enable advertising in case this was a failed connection
+ * attempt as a peripheral.
+ */
+ mgmt_reenable_advertising(hdev);
+}
+
static void create_le_conn_complete(struct hci_dev *hdev, u8 status)
{
struct hci_conn *conn;
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.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);
+ 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 = cpu_to_le16(0x002a);
+ cp.min_ce_len = cpu_to_le16(0x0000);
+ cp.max_ce_len = cpu_to_le16(0x0000);
- hci_req_add(&req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
+ 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;
- }
+ conn->state = BT_CONNECT;
+}
- return 0;
+static void hci_req_directed_advertising(struct hci_request *req,
+ struct hci_conn *conn)
+{
+ struct hci_dev *hdev = req->hdev;
+ struct hci_cp_le_set_adv_param cp;
+ u8 own_addr_type;
+ u8 enable;
+
+ enable = 0x00;
+ hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
+
+ /* 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);
+
+ /* Set require_privacy to false so that the remote device has a
+ * chance of identifying us.
+ */
+ if (hci_update_random_address(req, false, &own_addr_type) < 0)
+ return;
+
+ memset(&cp, 0, sizeof(cp));
+ cp.type = LE_ADV_DIRECT_IND;
+ cp.own_address_type = own_addr_type;
+ cp.direct_addr_type = conn->dst_type;
+ bacpy(&cp.direct_addr, &conn->dst);
+ cp.channel_map = hdev->le_adv_channel_map;
+
+ hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
+
+ enable = 0x01;
+ hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
+
+ 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))
- return ERR_PTR(-ENOTSUPP);
-
/* Some devices send ATT messages as soon as the physical link is
* established. To be able to handle these ATT messages, the user-
* space first establishes the connection and then starts the pairing
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->dst_type = dst_type;
+ conn->sec_level = BT_SECURITY_LOW;
+ conn->pending_sec_level = sec_level;
+ conn->auth_type = auth_type;
- conn->src_type = hdev->own_addr_type;
+ hci_req_init(&req, hdev);
+
+ if (test_bit(HCI_ADVERTISING, &hdev->dev_flags)) {
+ hci_req_directed_advertising(&req, conn);
+ goto create_conn;
+ }
- 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;
+ }
+
+ /* 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);
+
+create_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;
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)
{
BT_DBG("hcon %p", conn);
+ /* In Secure Connections Only mode, it is required that Secure
+ * Connections is used and the link is encrypted with AES-CCM
+ * using a P-256 authenticated combination key.
+ */
+ if (test_bit(HCI_SC_ONLY, &conn->hdev->flags)) {
+ if (!hci_conn_sc_enabled(conn) ||
+ !test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
+ conn->key_type != HCI_LK_AUTH_COMBINATION_P256)
+ return 0;
+ }
+
if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT))
return 0;
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;
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:
{
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);
projects / cascardo / linux.git / blobdiff