diff --git a/share/man/man4/ng_btsocket.4 b/share/man/man4/ng_btsocket.4
index 27c77adad45..a127d17b265 100644
--- a/share/man/man4/ng_btsocket.4
+++ b/share/man/man4/ng_btsocket.4
@@ -25,7 +25,7 @@
 .\" $Id: ng_btsocket.4,v 1.7 2003/05/21 19:37:35 max Exp $
 .\" $FreeBSD$
 .\"
-.Dd November 13, 2012
+.Dd September 26, 2021
 .Dt NG_BTSOCKET 4
 .Os
 .Sh NAME
@@ -114,12 +114,6 @@ Returns current value of the role switch parameter for the HCI node.
 Sets new value of the role switch parameter for the HCI node.
 .El
 .Pp
-The
-.Va net.bluetooth.hci.sockets.raw.ioctl_timeout
-variable, that can be examined and set via
-.Xr sysctl 8 ,
-controls the control request timeout (in seconds) for raw HCI sockets.
-.Pp
 Raw HCI sockets support filters.
 The application can filter certain HCI datagram types.
 For HCI event datagrams the application can set additional filter.
@@ -147,15 +141,45 @@ level can be used to obtain via
 or change via
 .Xr setsockopt 2
 raw HCI socket's filter.
+.Ss SYSCTL VARIABLES FOR RAW HCI SOCKETS
+.Bl -tag -width foo
+.It Va net.bluetooth.hci.sockets.raw.debug_level
+Get or set the debug level for Bluetooth raw HCI sockets.
+Each debug level includes messages from the lower levels.
+.Bl -tag -width "Information" -compact
+.It Disabled
+0 (no messages)
+.It Alert
+1
+.It Errors
+2
+.It Warnings
+3 (default)
+.It Information
+4
+.El
+.It Va net.bluetooth.hci.sockets.raw.ioctl_timeout
+Get or set the control request timeout (in seconds)
+for Bluetooth raw HCI sockets. Default is 5 seconds.
+.It Va net.bluetooth.hci.sockets.raw.queue_drops
+Get the number of input queue drops. Read-only.
+.It Va net.bluetooth.hci.sockets.raw.queue_maxlen
+Get the input queue maximum length, in items.
+Default is 300. Read-only.
+.It Va net.bluetooth.hci.sockets.raw.queue_len
+Get the input queue length, in items. Read-only.
+.El
 .Sh Dv BLUETOOTH_PROTO_L2CAP protocol
 The Bluetooth L2CAP socket address is defined as follows:
 .Bd -literal -offset indent
 /* Bluetooth version of struct sockaddr for L2CAP sockets */
 struct sockaddr_l2cap {
-        u_char    l2cap_len;    /* total length */
-        u_char    l2cap_family; /* address family */
-        uint16_t  l2cap_psm;    /* Protocol/Service Multiplexor */
-        bdaddr_t  l2cap_bdaddr; /* address */
+        u_char    l2cap_len;         /* total length */
+        u_char    l2cap_family;      /* address family */
+        u_int16_t l2cap_psm;         /* Protocol/Service Multiplexor */
+        bdaddr_t  l2cap_bdaddr;      /* address */
+	u_int16_t l2cap_cid;         /* channel ID */
+	u_int8_t  l2cap_bdaddr_type; /* address type */
 };
 .Ed
 .Ss Dv SOCK_RAW L2CAP sockets
@@ -198,12 +222,35 @@ Issues L2CAP
 .Dv GET_INFO
 request.
 .El
-.Pp
-The
-.Va net.bluetooth.l2cap.sockets.raw.ioctl_timeout
-variable, that can be examined and set via
-.Xr sysctl 8 ,
-controls the control request timeout (in seconds) for raw L2CAP sockets.
+.Ss SYSCTL VARIABLES FOR RAW L2CAP SOCKETS
+.Bl -tag -width foo
+.It Va net.bluetooth.l2cap.sockets.raw.debug_level
+Get or set the debug level for Bluetooth raw L2CAP sockets.
+Each debug level includes messages from the lower levels.
+.Bl -tag -width "Information" -compact
+.It Disabled
+0 (no messages)
+.It Alert
+1
+.It Errors
+2
+.It Warnings
+3 (default)
+.It Information
+4
+.El
+.It Va net.bluetooth.l2cap.sockets.raw.ioctl_timeout
+Get or set the control request timeout (in seconds).
+Default is 5 seconds.
+.It Va net.bluetooth.l2cap.sockets.raw.queue_drops
+Get the number of input queue drops.
+Read-only.
+.It Va net.bluetooth.l2cap.sockets.raw.queue_maxlen
+Get the input queue maximum length, in items.
+Default is 50. Read-only.
+.It Va net.bluetooth.l2cap.sockets.raw.queue_len
+Get the input queue length, in items. Read-only.
+.El
 .Ss Dv SOCK_SEQPACKET L2CAP sockets
 Implemented by
 .Nm btsock_l2c
@@ -264,6 +311,31 @@ Get (set) value of the flush timeout.
 Not implemented.
 .Ef
 .El
+.Ss SYSCTL VARIABLES FOR SEQUENCED PACKET L2CAP SOCKETS
+.Bl -tag -width foo
+.It Va net.bluetooth.l2cap.sockets.seq.debug_level
+Get or set the debug level for Bluetooth sequenced packet L2CAP sockets.
+Each debug level includes messages from the lower levels.
+.Bl -tag -width "Information" -compact
+.It Disabled
+0 (no messages)
+.It Alert
+1
+.It Errors
+2
+.It Warnings
+3 (default)
+.It Information
+4
+.El
+.It Va net.bluetooth.l2cap.sockets.seq.queue_drops
+Get the number of input queue drops. Read-only.
+.It Va net.bluetooth.l2cap.sockets.seq.queue_maxlen
+Get the input queue maximum length, in items.
+Default is 50. Read-only.
+.It Va net.bluetooth.l2cap.sockets.seq.queue_len
+Get the input queue length, in items. Read-only.
+.El
 .Sh Dv BLUETOOTH_PROTO_RFCOMM protocol
 The Bluetooth RFCOMM socket address is defined as follows:
 .Bd -literal -offset indent
@@ -320,12 +392,52 @@ Note that application still can write/read bigger chunks to/from the socket.
 .It Dv SO_RFCOMM_FC_INFO
 Return the flow control information for the underlying RFCOMM channel.
 .El
-.Pp
-The
-.Va net.bluetooth.rfcomm.sockets.stream.timeout
-variable, that can be examined and set via
-.Xr sysctl 8 ,
-controls the connection timeout (in seconds) for RFCOMM sockets.
+.Ss SYSCTL VARIABLES FOR BLUETOOTH RFCOMM SOCKETS
+.Bl -tag -width foo
+.It Va net.bluetooth.rfcomm.sockets.stream.debug_level
+Get or set the debug level for Bluetooth RFCOMM sockets.
+Each debug level includes messages from the lower levels.
+.Bl -tag -width "Information" -compact
+.It Disabled
+0 (no messages)
+.It Alert
+1
+.It Errors
+2
+.It Warnings
+3
+.It Information
+4 (default)
+.El
+.It Va net.bluetooth.rfcomm.sockets.stream.timeout
+Get or set the connection timeout (in seconds) for
+RFCOMM sockets. The default is 60.
+.El
+.Sh SYSCTL VARIABLES FOR BLUETOOTH SEQUENCED SCO SOCKETS
+.Bl -tag -width foo
+.It Va net.bluetooth.sco.sockets.seq.debug_level
+Get or set the debug level for Bluetooth sequenced packet SCO sockets.
+Each debug level includes messages from the lower levels.
+.Bl -tag -width "Information" -compact
+.It Disabled
+0 (no messages)
+.It Alert
+1
+.It Errors
+2
+.It Warnings
+3 (default)
+.It Information
+4
+.El
+.It Va net.bluetooth.sco.sockets.seq.queue_drops
+Get the number of input queue drops. Read-only.
+.It Va net.bluetooth.sco.sockets.seq.queue_maxlen
+Get the input queue maximum length, in items.
+Default is 50. Read-only.
+.It Va net.bluetooth.sco.sockets.seq.queue_len
+Get the input queue length, in items. Read-only.
+.El
 .Sh HOOKS
 These node types support hooks with arbitrary names (as long as they are
 unique) and always accept hook connection requests.