linux-kernel - [PATCH 1/2] Documentation: usb: Update NCM configfs parameters

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Date:   Mon, 9 Oct 2023 19:50:04 +0530
From:   Krishna Kurapati <quic_kriskura@...cinc.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maciej Żenczykowski <maze@...gle.com>,
        onathan Corbet <corbet@....net>,
        Linyu Yuan <quic_linyyuan@...cinc.com>
CC:     <linux-usb@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_ppratap@...cinc.com>,
        <quic_wcheng@...cinc.com>, <quic_jackp@...cinc.com>,
        Krishna Kurapati <quic_kriskura@...cinc.com>
Subject: [PATCH 1/2] Documentation: usb: Update NCM configfs parameters

Updateed NCM configfs parameters by adding max_segment_size
property and describing its effect on MTU configuration of
NCM interface.

Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
---
 Documentation/usb/gadget-testing.rst | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst
index 29072c166d23..6e5d96668e8e 100644
--- a/Documentation/usb/gadget-testing.rst
+++ b/Documentation/usb/gadget-testing.rst
@@ -448,15 +448,17 @@ Function-specific configfs interface
 The function name to use when creating the function directory is "ncm".
 The NCM function provides these attributes in its function directory:
 
-	=============== ==================================================
-	ifname		network device interface name associated with this
-			function instance
-	qmult		queue length multiplier for high and super speed
-	host_addr	MAC address of host's end of this
-			Ethernet over USB link
-	dev_addr	MAC address of device's end of this
-			Ethernet over USB link
-	=============== ==================================================
+	================= ====================================================
+	ifname		  network device interface name associated with this
+			  function instance
+	qmult		  queue length multiplier for high and super speed
+	host_addr	  MAC address of host's end of this
+			  Ethernet over USB link
+	dev_addr	  MAC address of device's end of this
+			  Ethernet over USB link
+	max_segment_size  Segment size required for P2P connections. This
+			  will inturn set MTU to (max_segment_size - 14 bytes)
+	================= ====================================================
 
 and after creating the functions/ncm.<instance name> they contain default
 values: qmult is 5, dev_addr and host_addr are randomly selected.
-- 
2.42.0