linux-kernel - Re: [PATCH net,stable v2] net: cdc_ncm: update datagram size after changing mtu

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Date:	Fri, 20 May 2016 19:32:02 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	robert.dobrowolski@...ux.intel.com
Cc:	linux-usb@...r.kernel.org, stable@...r.kernel.org,
	oliver@...kum.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, rafal.f.redzimski@...el.com
Subject: Re: [PATCH net,stable v2] net: cdc_ncm: update datagram size after
 changing mtu

From: Robert Dobrowolski <robert.dobrowolski@...ux.intel.com>
Date: Thu, 19 May 2016 11:56:09 +0200

> From: Rafal Redzimski <rafal.f.redzimski@...el.com>
> 
> Current implementation updates the mtu size and notify cdc_ncm
> device using USB_CDC_SET_MAX_DATAGRAM_SIZE request about datagram
> size change instead of changing rx_urb_size.
> 
> Whenever mtu is being changed, datagram size should also be
> updated. Also updating maxmtu formula so it takes max_datagram_size with
> use of cdc_ncm_max_dgram_size() and not ctx.
> 
> Signed-off-by: Robert Dobrowolski <robert.dobrowolski@...ux.intel.com>
> Signed-off-by: Rafal Redzimski <rafal.f.redzimski@...el.com>

Appied, thanks.