From: John Fastabend <john.r.fastabend@intel.com>
To: Tom Herbert <therbert@google.com>,
Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
davem@davemloft.net, netdev@vger.kernel.org, gospo@redhat.com,
sassmann@redhat.com
Subject: Re: [net-next 04/14] net: Fix issue with netdev_tx_reset_queue not resetting queue from XOFF state
Date: Fri, 20 Apr 2012 14:31:14 -0700 [thread overview]
Message-ID: <4F91D5A2.2060300@intel.com> (raw)
In-Reply-To: <CA+mtBx-BWy=KANgSca9f2vxuu1Km_kPMJbQFa+Nq9q_YYvatBQ@mail.gmail.com>
On 4/20/2012 2:19 PM, Tom Herbert wrote:
> Hi Jeff,
>
>> @@ -3244,7 +3246,6 @@ static void igb_clean_tx_ring(struct igb_ring *tx_ring)
>> buffer_info = &tx_ring->tx_buffer_info[i];
>> igb_unmap_and_free_tx_resource(tx_ring, buffer_info);
>> }
>> - netdev_tx_reset_queue(txring_txq(tx_ring));
>>
> Why is it necessary to remove this? If rings are being freed with
> going through completion path then we would need this reset. Is this
> being done elsewhere maybe?
>
Alex moved this into the igb_configure_tx_ring() iirc to catch an ethtool
test case. He assured me when I reviewed the patch that igb_configure_tx_ring()
would always be called before netif_carrier_on() so I think(?) that should
be OK.
The above removed case was called after netif_carrier_off() anyways.
> Tom
> --
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next prev parent reply other threads:[~2012-04-20 21:31 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-13 4:03 [net-next 00/14][pull request] Intel Wired LAN Driver Updates Jeff Kirsher
2012-03-13 4:03 ` [net-next 01/14] igb: fix ethtool offline test Jeff Kirsher
2012-03-13 4:03 ` [net-next 02/14] ixgbe: remove tie between NAPI work limits and interrupt moderation Jeff Kirsher
2012-03-13 4:03 ` [net-next 03/14] ixgbe: add support for byte queue limits Jeff Kirsher
2012-03-13 4:03 ` [net-next 04/14] net: Fix issue with netdev_tx_reset_queue not resetting queue from XOFF state Jeff Kirsher
2012-04-20 21:19 ` Tom Herbert
2012-04-20 21:31 ` John Fastabend [this message]
2012-04-21 3:24 ` Alexander Duyck
2012-04-21 6:01 ` Tom Herbert
2012-04-21 16:27 ` John Fastabend
2012-04-21 20:18 ` David Miller
2012-04-23 3:21 ` John Fastabend
2012-03-13 4:03 ` [net-next 05/14] net: Add memory barriers to prevent possible race in byte queue limits Jeff Kirsher
2012-03-13 4:03 ` [net-next 06/14] ixgbe: Do no clear Tx status bits since eop_desc provides enough info Jeff Kirsher
2012-03-13 4:03 ` [net-next 07/14] ixgbe: Reorder adapter contents for better cache utilization Jeff Kirsher
2012-03-13 4:03 ` [net-next 08/14] ixgbe: Address issues with Tx WHTRESH value not being set correctly Jeff Kirsher
2012-03-13 4:03 ` [net-next 09/14] ixgbe: Correct Adaptive Interrupt Moderation so that it will change values Jeff Kirsher
2012-03-13 4:03 ` [net-next 10/14] ixgbe: Default to queue pairs when number of queues is less than CPUs Jeff Kirsher
2012-03-13 4:03 ` [net-next 11/14] ixgbe: Drop unnecessary napi_schedule_prep and spare blank line from ixgbe_intr Jeff Kirsher
2012-03-13 4:03 ` [net-next 12/14] ixgbe: Allocate rings as part of the q_vector Jeff Kirsher
2012-03-13 4:03 ` [net-next 13/14] ixgbe: Add iterator for cycling through rings on a q_vector Jeff Kirsher
2012-03-13 4:03 ` [net-next 14/14] ixgbe: Simplify logic for ethtool loopback frame creation and testing Jeff Kirsher
2012-03-13 5:55 ` [net-next 00/14][pull request] Intel Wired LAN Driver Updates David Miller
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