From: David Miller <davem@davemloft.net>
To: ivecera@redhat.com
Cc: netdev@vger.kernel.org, mchan@broadcom.com
Subject: Re: [PATCH net] tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled
Date: Fri, 18 Apr 2014 18:01:51 -0400 (EDT) [thread overview]
Message-ID: <20140418.180151.634079582942024473.davem@davemloft.net> (raw)
In-Reply-To: <1397739068-14240-1-git-send-email-ivecera@redhat.com>
From: Ivan Vecera <ivecera@redhat.com>
Date: Thu, 17 Apr 2014 14:51:08 +0200
> 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@redhat.com>
Applied and queued up for -stable.
prev parent reply other threads:[~2014-04-18 21:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-17 12:51 [PATCH net] tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled Ivan Vecera
2014-04-17 17:47 ` Michael Chan
2014-04-18 22:01 ` David Miller [this message]
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