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From: Oliver Neukum <oneukum@suse.com>
To: "Adam Bennett" <abennett72@gmail.com>, "Bjørn Mork" <bjorn@mork.no>
Cc: Felipe Balbi <balbi@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org
Subject: Re: Possible bug with cdc_ether, triggers NETDEV WATCHDOG
Date: Mon, 14 Oct 2019 11:04:22 +0200
Message-ID: <1571043862.19529.9.camel@suse.com> (raw)
In-Reply-To: <339e0633-6dd3-5c0f-0b6d-598848bf1d37@gmail.com>

Am Mittwoch, den 09.10.2019, 09:27 -0400 schrieb Adam Bennett:
> On 10/9/19 4:53 AM, Bjørn Mork wrote:

> > This warning means that the gadget doesn't accept the packets we send
> > it.  There isn't much the host can do about that, except dropping
> > packets on the floor.  Which is why the warning is this loud.
> > 
> 
> Would a firewall on either the linux host or the Pi Zero cause the same 
> problem (and message)?

If a firewall discards a packet, it will not reach the transmit queue.
Hence the answer to that question is negative. If other OSes get this
device to work, we would need to know what they are doing differently.
Can you get a trace from them and compare it to ours?

	Regards
		Oliver


      reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-07 21:15 Adam Bennett
2019-10-09  8:53 ` Bjørn Mork
2019-10-09 13:27   ` Adam Bennett
2019-10-14  9:04     ` Oliver Neukum [this message]

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