netdev - Re: [PATCH net] qmi_wwan: Clone the skb when in pass-through mode

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Date:   Tue, 15 Jun 2021 08:24:39 +0200
From:   Bjørn Mork <bjorn@...k.no>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Kristian Evensen <kristian.evensen@...il.com>,
        netdev@...r.kernel.org, subashab@...eaurora.org
Subject: Re: [PATCH net] qmi_wwan: Clone the skb when in pass-through mode

Jakub Kicinski <kuba@...nel.org> writes:

> It does look pretty strange that qmimux_rx_fixup() copies out all
> packets and receives them, and then let's usbnet to process the
> multi-frame skb without even fulling off the qmimux_hdr. I'm probably
> missing something.. otherwise sth like FLAG_MULTI_PACKET may be in
> order?

Yes, maybe it is?  We'd have to call usbnet_skb_return() for the plain
IP frames then, but that might come out cleaner?


Bjørn