From: "Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@intel.com>
To: Ben Hutchings <bhutchings@solarflare.com>
Cc: "Duyck, Alexander H" <alexander.h.duyck@intel.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"therbert@google.com" <therbert@google.com>,
"ycai@google.com" <ycai@google.com>,
"eric.dumazet@gmail.com" <eric.dumazet@gmail.com>,
"davem@davemloft.net" <davem@davemloft.net>
Subject: Re: [RFC PATCH v2 10/10] ixgbe: Add support for set_channels ethtool operation
Date: Wed, 16 Jan 2013 16:30:25 +0000 [thread overview]
Message-ID: <1358353807.29335.1.camel@ppwaskie-mobl2> (raw)
In-Reply-To: <1358353157.2923.18.camel@bwh-desktop.uk.solarflarecom.com>
On Wed, 2013-01-16 at 16:19 +0000, Ben Hutchings wrote:
> On Thu, 2013-01-10 at 10:58 -0800, Alexander Duyck wrote:
> > This change adds support for the ethtool set_channels operation.
> >
> > Since the ixgbe driver has to support DCB as well as the other modes the
> > assumption I made here is that the number of channels in DCB modes refers
> > to the number of queues per traffic class, not the number of queues total.
> >
> > Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
>
> In DCB mode are there separate IRQs for the different classes?
Yes. The Rx packet buffer is split into multiple packet buffers, one
for each online class. After that, it's just queues assigned to the
packet buffers, and interrupts assigned however you want them to be.
Cheers,
-PJ
next prev parent reply other threads:[~2013-01-16 16:30 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 18:56 [PATCH v2 00/10] Make XPS usable within ixgbe Alexander Duyck
2013-01-10 18:56 ` [PATCH v2 01/10] net: Split core bits of netdev_pick_tx into __netdev_pick_tx Alexander Duyck
2013-01-10 18:57 ` [PATCH v2 02/10] net: Add functions netif_reset_xps_queue and netif_set_xps_queue Alexander Duyck
2013-01-10 18:57 ` [PATCH v2 03/10] net: Rewrite netif_reset_xps_queue to allow for better code reuse Alexander Duyck
2013-01-10 18:57 ` [PATCH v2 04/10] net: Rewrite netif_set_xps_queues to address several issues Alexander Duyck
2013-01-10 18:57 ` [PATCH v2 05/10] net: Add support for XPS without sysfs being defined Alexander Duyck
2013-01-10 18:57 ` [RFC PATCH v2 06/10] ixgbe: Define FCoE and Flow director limits much sooner to allow for changes Alexander Duyck
2013-01-10 18:58 ` [RFC PATCH v2 07/10] ixgbe: Add function for setting XPS queue mapping Alexander Duyck
2013-01-10 18:58 ` [RFC PATCH v2 08/10] ixgbe: Update ixgbe driver to use __netdev_pick_tx in ixgbe_select_queue Alexander Duyck
2013-01-10 18:58 ` [RFC PATCH v2 09/10] ixgbe: Add support for displaying the number of Tx/Rx channels Alexander Duyck
2013-01-10 18:58 ` [RFC PATCH v2 10/10] ixgbe: Add support for set_channels ethtool operation Alexander Duyck
2013-01-16 16:19 ` Ben Hutchings
2013-01-16 16:30 ` Waskiewicz Jr, Peter P [this message]
2013-01-23 21:20 ` Ben Hutchings
2013-01-23 22:31 ` Alexander Duyck
2013-01-23 23:48 ` John Fastabend
2013-01-17 0:35 ` Alexander Duyck
2013-01-11 6:47 ` [PATCH v2 00/10] Make XPS usable within ixgbe David Miller
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