netdev - Re: [PATCH net-next] net: qualcomm: rmnet: Update rmnet device MTU based on real device

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Date:   Thu, 10 Dec 2020 13:31:10 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     subashab@...eaurora.org
Cc:     loic.poulain@...aro.org, kuba@...nel.org, netdev@...r.kernel.org,
        stranche@...eaurora.org
Subject: Re: [PATCH net-next] net: qualcomm: rmnet: Update rmnet device MTU
 based on real device

From: Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
Date: Wed,  9 Dec 2020 22:51:46 -0700

> Packets sent by rmnet to the real device have variable MAP header
> lengths based on the data format configured. This patch adds checks
> to ensure that the real device MTU is sufficient to transmit the MAP
> packet comprising of the MAP header and the IP packet. This check
> is enforced when rmnet devices are created and updated and during
> MTU updates of both the rmnet and real device.
> 
> Additionally, rmnet devices now have a default MTU configured which
> accounts for the real device MTU and the headroom based on the data
> format.
> 
> Signed-off-by: Sean Tranchetti <stranche@...eaurora.org>
> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>

Applied.