Merge tag 'for-net-2024-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Luiz Augusto von Dentz says:

====================
bluetooth pull request for net:

 - hci_sync: fix not using correct handle
 - L2CAP: fix rejecting L2CAP_CONN_PARAM_UPDATE_REQ
 - L2CAP: fix connection setup in l2cap_connect

* tag 'for-net-2024-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: fix connection setup in l2cap_connect
  Bluetooth: L2CAP: Fix rejecting L2CAP_CONN_PARAM_UPDATE_REQ
  Bluetooth: hci_sync: Fix not using correct handle
====================

Link: https://lore.kernel.org/r/20240610135803.920662-1-luiz.dentz@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/bluetooth/hci_core.h

@@ -2113,18 +2113,46 @@ static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
 {
 	u16 max_latency;
 
-	if (min > max || min < 6 || max > 3200)
+	if (min > max) {
+		BT_WARN("min %d > max %d", min, max);
 		return -EINVAL;
+	}
+
+	if (min < 6) {
+		BT_WARN("min %d < 6", min);
+		return -EINVAL;
+	}
+
+	if (max > 3200) {
+		BT_WARN("max %d > 3200", max);
+		return -EINVAL;
+	}
+
+	if (to_multiplier < 10) {
+		BT_WARN("to_multiplier %d < 10", to_multiplier);
+		return -EINVAL;
+	}
 
-	if (to_multiplier < 10 || to_multiplier > 3200)
+	if (to_multiplier > 3200) {
+		BT_WARN("to_multiplier %d > 3200", to_multiplier);
 		return -EINVAL;
+	}
 
-	if (max >= to_multiplier * 8)
+	if (max >= to_multiplier * 8) {
+		BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
 		return -EINVAL;
+	}
 
 	max_latency = (to_multiplier * 4 / max) - 1;
-	if (latency > 499 || latency > max_latency)
+	if (latency > 499) {
+		BT_WARN("latency %d > 499", latency);
 		return -EINVAL;
+	}
+
+	if (latency > max_latency) {
+		BT_WARN("latency %d > max_latency %d", latency, max_latency);
+		return -EINVAL;
+	}
 
 	return 0;
 }

net/bluetooth/hci_sync.c

@@ -1194,7 +1194,7 @@ int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
 
 	cp.own_addr_type = own_addr_type;
 	cp.channel_map = hdev->le_adv_channel_map;
-	cp.handle = instance;
+	cp.handle = adv ? adv->handle : instance;
 
 	if (flags & MGMT_ADV_FLAG_SEC_2M) {
 		cp.primary_phy = HCI_ADV_PHY_1M;

net/bluetooth/l2cap_core.c

@@ -4011,8 +4011,8 @@ static void l2cap_connect(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd,
 				status = L2CAP_CS_AUTHOR_PEND;
 				chan->ops->defer(chan);
 			} else {
-				l2cap_state_change(chan, BT_CONNECT2);
-				result = L2CAP_CR_PEND;
+				l2cap_state_change(chan, BT_CONFIG);
+				result = L2CAP_CR_SUCCESS;
 				status = L2CAP_CS_NO_INFO;
 			}
 		} else {
@@ -4647,13 +4647,7 @@ static inline int l2cap_conn_param_update_req(struct l2cap_conn *conn,
 
 	memset(&rsp, 0, sizeof(rsp));
 
-	if (max > hcon->le_conn_max_interval) {
-		BT_DBG("requested connection interval exceeds current bounds.");
-		err = -EINVAL;
-	} else {
 	err = hci_check_conn_params(min, max, latency, to_multiplier);
-	}
-
 	if (err)
 		rsp.result = cpu_to_le16(L2CAP_CONN_PARAM_REJECTED);
 	else