6.5-stable review patch. If anyone has any objections, please let me know.
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From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
[ Upstream commit 04a51d616929eb96b7a3e547bc11d3bb46af2c9f ]
ISO_LINK connections where not being handled properly on hci_abort_conn_sync which sometimes resulted in sending the wrong commands, or in case of having the reject command being sent by the socket code (iso.c) which is sort of a layer violation.
Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Stable-dep-of: acab8ff29a2a ("Bluetooth: ISO: Fix invalid context error") Signed-off-by: Sasha Levin sashal@kernel.org --- net/bluetooth/hci_conn.c | 23 +++++++++++++++++++---- net/bluetooth/hci_sync.c | 34 ++++++++++++++++++++++++++++++++++ net/bluetooth/iso.c | 14 -------------- 3 files changed, 53 insertions(+), 18 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 41250e4b94dff..4e9654fe89c9e 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1277,7 +1277,12 @@ u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle)
static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err) { - struct hci_conn *conn = data; + struct hci_conn *conn; + u16 handle = PTR_ERR(data); + + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (!conn) + return;
bt_dev_dbg(hdev, "err %d", err);
@@ -1302,10 +1307,17 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
static int hci_connect_le_sync(struct hci_dev *hdev, void *data) { - struct hci_conn *conn = data; + struct hci_conn *conn; + u16 handle = PTR_ERR(data); + + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (!conn) + return 0;
bt_dev_dbg(hdev, "conn %p", conn);
+ conn->state = BT_CONNECT; + return hci_le_create_conn_sync(hdev, conn); }
@@ -1375,10 +1387,10 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, conn->sec_level = BT_SECURITY_LOW; conn->conn_timeout = conn_timeout;
- conn->state = BT_CONNECT; clear_bit(HCI_CONN_SCANNING, &conn->flags);
- err = hci_cmd_sync_queue(hdev, hci_connect_le_sync, conn, + err = hci_cmd_sync_queue(hdev, hci_connect_le_sync, + ERR_PTR(conn->handle), create_le_conn_complete); if (err) { hci_conn_del(conn); @@ -2905,6 +2917,9 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason) /* If the connection is pending check the command opcode since that * might be blocking on hci_cmd_sync_work while waiting its respective * event so we need to hci_cmd_sync_cancel to cancel it. + * + * hci_connect_le serializes the connection attempts so only one + * connection can be in BT_CONNECT at time. */ if (conn->state == BT_CONNECT && hdev->req_status == HCI_REQ_PEND) { switch (hci_skb_event(hdev->sent_cmd)) { diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 6aaecd6e656bc..caf4263ef9b77 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -5290,6 +5290,24 @@ static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn, if (conn->type == LE_LINK) return hci_le_connect_cancel_sync(hdev, conn, reason);
+ if (conn->type == ISO_LINK) { + /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E + * page 1857: + * + * If this command is issued for a CIS on the Central and the + * CIS is successfully terminated before being established, + * then an HCI_LE_CIS_Established event shall also be sent for + * this CIS with the Status Operation Cancelled by Host (0x44). + */ + if (test_bit(HCI_CONN_CREATE_CIS, &conn->flags)) + return hci_disconnect_sync(hdev, conn, reason); + + /* There is no way to cancel a BIS without terminating the BIG + * which is done later on connection cleanup. + */ + return 0; + } + if (hdev->hci_ver < BLUETOOTH_VER_1_2) return 0;
@@ -5316,11 +5334,27 @@ static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn, sizeof(cp), &cp, HCI_CMD_TIMEOUT); }
+static int hci_le_reject_cis_sync(struct hci_dev *hdev, struct hci_conn *conn, + u8 reason) +{ + struct hci_cp_le_reject_cis cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = cpu_to_le16(conn->handle); + cp.reason = reason; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_REJECT_CIS, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason) { struct hci_cp_reject_conn_req cp;
+ if (conn->type == ISO_LINK) + return hci_le_reject_cis_sync(hdev, conn, reason); + if (conn->type == SCO_LINK || conn->type == ESCO_LINK) return hci_reject_sco_sync(hdev, conn, reason);
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c index 42f7b257bdfbc..c8460eb7f5c0b 100644 --- a/net/bluetooth/iso.c +++ b/net/bluetooth/iso.c @@ -622,18 +622,6 @@ static void iso_sock_kill(struct sock *sk) sock_put(sk); }
-static void iso_conn_defer_reject(struct hci_conn *conn) -{ - struct hci_cp_le_reject_cis cp; - - BT_DBG("conn %p", conn); - - memset(&cp, 0, sizeof(cp)); - cp.handle = cpu_to_le16(conn->handle); - cp.reason = HCI_ERROR_REJ_BAD_ADDR; - hci_send_cmd(conn->hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); -} - static void __iso_sock_close(struct sock *sk) { BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); @@ -658,8 +646,6 @@ static void __iso_sock_close(struct sock *sk) break;
case BT_CONNECT2: - if (iso_pi(sk)->conn->hcon) - iso_conn_defer_reject(iso_pi(sk)->conn->hcon); iso_chan_del(sk, ECONNRESET); break; case BT_CONNECT: