netdev - Re: [PATCH net] tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled

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:	Thu, 17 Apr 2014 10:47:32 -0700
From:	Michael Chan <mchan@...adcom.com>
To:	Ivan Vecera <ivecera@...hat.com>
CC:	<netdev@...r.kernel.org>
Subject: Re: [PATCH net] tg3: update rx_jumbo_pending ring param only when
 jumbo frames are enabled

On Thu, 2014-04-17 at 14:51 +0200, Ivan Vecera wrote: 
> The patch fixes a problem with dropped jumbo frames after usage of
> 'ethtool -G ... rx'.
> 
> Scenario:
> 1. ip link set eth0 up
> 2. ethtool -G eth0 rx N # <- This zeroes rx-jumbo
> 3. ip link set mtu 9000 dev eth0
> 
> The ethtool command set rx_jumbo_pending to zero so any received jumbo
> packets are dropped and you need to use 'ethtool -G eth0 rx-jumbo N'
> to workaround the issue.
> The patch changes the logic so rx_jumbo_pending value is changed only if
> jumbo frames are enabled (MTU > 1500).
> 
> Signed-off-by: Ivan Vecera <ivecera@...hat.com>

Acked-by: Michael Chan <mchan@...adcom.com>


--
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