netdev - Re: [PATCH 1/1] TX throttling bug-fixing patch of AX88179

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 22 Jul 2013 11:29:16 -0700
From:	Grant Grundler <grundler@...gle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Freddy Xin <freddy@...x.com.tw>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, linux-usb@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	ASIX Louis [蘇威陸] <louis@...x.com.tw>,
	Allan Chou <allan@...x.com.tw>
Subject: Re: [PATCH 1/1] TX throttling bug-fixing patch of AX88179_178A

On Mon, Jul 22, 2013 at 10:07 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
...
> I guess that if a driver does not advertise NETIF_F_SG, this
> skb_linearize() call is not needed : All frames reaching your xmit
> function should already be linear

As Ben Hutchings pointed out, hw_features is still setting this...but
I'm not sure how that matters.

ax88179_set_features() doesn't allow setting SG or TSO features.  But
I expect it would be "not too difficult" to add such that ethtool
could set those features after boot.  Or perhaps add a driver module
parameter to set these features.  I just guessing the skb_linearize()
could be removed until set_features support for SG and/or TSO is
added. Is that correct?

thanks,
grant
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html