From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Bruce Richardson <bruce.richardson@intel.com>,
Declan Doherty <declan.doherty@intel.com>
Cc: Jan Blunck <jblunck@infradead.org>,
Eric Kinzie <ehkinzie@gmail.com>,
Ilya Maximets <i.maximets@samsung.com>,
dev@dpdk.org, Heetae Ahn <heetae82.ahn@samsung.com>,
Yuanhan Liu <yuanhan.liu@linux.intel.com>,
Bernard Iremonger <bernard.iremonger@intel.com>,
stable@dpdk.org, Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] Revert "bonding: use existing enslaved device queues"
Date: Mon, 21 Nov 2016 11:30:58 +0000 [thread overview]
Message-ID: <7c4bc057-93ee-42e1-b7ce-c87460aeee2a@intel.com> (raw)
In-Reply-To: <20161025140048.GB10444@bricha3-MOBL3.ger.corp.intel.com>
On 10/25/2016 3:00 PM, Bruce Richardson wrote:
> On Tue, Oct 25, 2016 at 02:48:04PM +0100, Declan Doherty wrote:
>> On 25/10/16 13:57, Bruce Richardson wrote:
>>> On Mon, Oct 24, 2016 at 04:07:17PM +0100, Declan Doherty wrote:
>>>> On 24/10/16 15:51, Jan Blunck wrote:
>>>>> On Mon, Oct 24, 2016 at 7:02 AM, Declan Doherty
>>>>> <declan.doherty@intel.com> wrote:
>>>>>> On 14/10/16 00:37, Eric Kinzie wrote:
>>>>>>>
>>>>>>> On Wed Oct 12 16:24:21 +0100 2016, Bruce Richardson wrote:
>>>>>>>>
>>>>>>>> On Wed, Oct 12, 2016 at 04:24:54PM +0300, Ilya Maximets wrote:
>>>>>>>>>
>>>>>>>>> On 07.10.2016 05:02, Eric Kinzie wrote:
>>>>>>>>>>
>>>>>>>>>> On Wed Sep 07 15:28:10 +0300 2016, Ilya Maximets wrote:
>>>>>>>>>>>
>>>>>>>>>>> This reverts commit 5b7bb2bda5519b7800f814df64d4e015282140e5.
>>>>>>>>>>>
>>>>>>>>>>> It is necessary to reconfigure all queues every time because
>>>>>>>>>>> configuration
>>>>>>>>>>> can be changed.
>>>>>>>>>>>
>>>>>>>>>>> For example, if we're reconfiguring bonding device with new memory
>>>>>>>>>>> pool,
>>>>>>>>>>> already configured queues will still use the old one. And if the old
>>>>>>>>>>> mempool be freed, application likely will panic in attempt to use
>>>>>>>>>>> freed mempool.
>>>>>>>>>>>
>>>>>>>>>>> This happens when we use the bonding device with OVS 2.6 while MTU
>>>>>>>>>>> reconfiguration:
>>>>>>>>>>>
>>>>>>>>>>> PANIC in rte_mempool_get_ops():
>>>>>>>>>>> assert "(ops_index >= 0) && (ops_index < RTE_MEMPOOL_MAX_OPS_IDX)"
>>>>>>>>>>> failed
>>>>>>>>>>>
>>>>>>>>>>> Cc: <stable@dpdk.org>
>>>>>>>>>>> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
>>>>>>>>>>> ---
>>>>>>>>>>> drivers/net/bonding/rte_eth_bond_pmd.c | 10 ++--------
>>>>>>>>>>> 1 file changed, 2 insertions(+), 8 deletions(-)
>>>>>>>>>>>
>>>>>>>>>>> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c
>>>>>>>>>>> b/drivers/net/bonding/rte_eth_bond_pmd.c
>>>>>>>>>>> index b20a272..eb5b6d1 100644
>>>>>>>>>>> --- a/drivers/net/bonding/rte_eth_bond_pmd.c
>>>>>>>>>>> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
>>>>>>>>>>> @@ -1305,8 +1305,6 @@ slave_configure(struct rte_eth_dev
>>>>>>>>>>> *bonded_eth_dev,
>>>>>>>>>>> struct bond_rx_queue *bd_rx_q;
>>>>>>>>>>> struct bond_tx_queue *bd_tx_q;
>>>>>>>>>>>
>>>>>>>>>>> - uint16_t old_nb_tx_queues = slave_eth_dev->data->nb_tx_queues;
>>>>>>>>>>> - uint16_t old_nb_rx_queues = slave_eth_dev->data->nb_rx_queues;
>>>>>>>>>>> int errval;
>>>>>>>>>>> uint16_t q_id;
>>>>>>>>>>>
>>>>>>>>>>> @@ -1347,9 +1345,7 @@ slave_configure(struct rte_eth_dev
>>>>>>>>>>> *bonded_eth_dev,
>>>>>>>>>>> }
>>>>>>>>>>>
>>>>>>>>>>> /* Setup Rx Queues */
>>>>>>>>>>> - /* Use existing queues, if any */
>>>>>>>>>>> - for (q_id = old_nb_rx_queues;
>>>>>>>>>>> - q_id < bonded_eth_dev->data->nb_rx_queues; q_id++) {
>>>>>>>>>>> + for (q_id = 0; q_id < bonded_eth_dev->data->nb_rx_queues;
>>>>>>>>>>> q_id++) {
>>>>>>>>>>> bd_rx_q = (struct bond_rx_queue
>>>>>>>>>>> *)bonded_eth_dev->data->rx_queues[q_id];
>>>>>>>>>>>
>>>>>>>>>>> errval =
>>>>>>>>>>> rte_eth_rx_queue_setup(slave_eth_dev->data->port_id, q_id,
>>>>>>>>>>> @@ -1365,9 +1361,7 @@ slave_configure(struct rte_eth_dev
>>>>>>>>>>> *bonded_eth_dev,
>>>>>>>>>>> }
>>>>>>>>>>>
>>>>>>>>>>> /* Setup Tx Queues */
>>>>>>>>>>> - /* Use existing queues, if any */
>>>>>>>>>>> - for (q_id = old_nb_tx_queues;
>>>>>>>>>>> - q_id < bonded_eth_dev->data->nb_tx_queues; q_id++) {
>>>>>>>>>>> + for (q_id = 0; q_id < bonded_eth_dev->data->nb_tx_queues;
>>>>>>>>>>> q_id++) {
>>>>>>>>>>> bd_tx_q = (struct bond_tx_queue
>>>>>>>>>>> *)bonded_eth_dev->data->tx_queues[q_id];
>>>>>>>>>>>
>>>>>>>>>>> errval =
>>>>>>>>>>> rte_eth_tx_queue_setup(slave_eth_dev->data->port_id, q_id,
>>>>>>>>>>> --
>>>>>>>>>>> 2.7.4
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> NAK
>>>>>>>>>>
>>>>>>>>>> There are still some users of this code. Let's give them a chance to
>>>>>>>>>> comment before removing it.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hi Eric,
>>>>>>>>>
>>>>>>>>> Are these users in CC-list? If not, could you, please, add them?
>>>>>>>>> This patch awaits in mail-list already more than a month. I think, it's
>>>>>>>>> enough
>>>>>>>>> time period for all who wants to say something. Patch fixes a real bug
>>>>>>>>> that
>>>>>>>>> prevent using of DPDK bonding in all applications that reconfigures
>>>>>>>>> devices
>>>>>>>>> in runtime including OVS.
>>>>>>>>>
>>>>>>>> Agreed.
>>>>>>>>
>>>>>>>> Eric, does reverting this patch cause you problems directly, or is your
>>>>>>>> concern
>>>>>>>> just with regards to potential impact to others?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> /Bruce
>>>>>>>
>>>>>>>
>>>>>>> This won't impact me directly. The users are CCed (different thread)
>>>>>>> and I haven't seen any comment, so I no longer have any objection to
>>>>>>> reverting this change.
>>>>>>>
>>>>>>> Eric
>>>>>>>
>>>>>>
>>>>>> As there has been no further objections and this reinstates the original
>>>>>> expected behavior of the bonding driver. I'm re-ack'ing for inclusion in
>>>>>> release.
>>>>>>
>>>>>> Acked-by: Declan Doherty <declan.doherty@intel.com>
>>>>>
>>>>> Ok, I can revert the revert for us.
>>>>>
>>>>> Do I read this correctly that you are not interested in fixing this properly?!
>>>>>
>>>>> Thanks,
>>>>> Jan
>>>>>
>>>>
>>>> Jan, sorry I missed the replies from last week due to the way my mail client
>>>> was filtering the conversation. Let me have another look at this and I'll
>>>> come back to the list.
>>>>
>>>> Thanks
>>>> Declan
>>>
>>> While this patch has already been applied to dpdk-next-net tree, it
>>> appears that there is still some ongoing discussion about it. I'm
>>> therefore planning to pull it back out of the tree for rc2. If a
>>> subsequent consensus is reached we can see about including it in rc3.
>>>
>>> Declan, as maintainer, does this seem reasonable to you.
>>>
>>> Regards,
>>> /Bruce
>>>
>>
>>
>> Hey Bruce, that seems reasonable, I would like to discuss this further with
>> Jan and Ilya.
>>
>
> Done. Hopefully consensus on a correct solution for this driver can be
> reached soon.
>
Is there an update for this patch? Is a consensus reached?
Thanks,
ferruh
next prev parent reply other threads:[~2016-11-21 11:31 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-07 12:28 [dpdk-stable] " Ilya Maximets
[not found] ` <CGME20160916050359eucas1p22998d07e190781e165082cdd9c917470@eucas1p2.samsung.com>
2016-09-16 5:03 ` Ilya Maximets
2016-10-06 14:32 ` Declan Doherty
2016-10-19 9:55 ` [dpdk-stable] [dpdk-dev] " Bruce Richardson
2016-10-25 13:59 ` Bruce Richardson
2016-10-07 2:02 ` [dpdk-stable] " Eric Kinzie
2016-10-12 13:24 ` Ilya Maximets
2016-10-12 15:24 ` [dpdk-stable] [dpdk-dev] " Bruce Richardson
2016-10-13 23:37 ` Eric Kinzie
2016-10-24 11:02 ` Declan Doherty
2016-10-24 14:51 ` Jan Blunck
2016-10-24 15:07 ` Declan Doherty
2016-10-25 12:57 ` Bruce Richardson
2016-10-25 13:48 ` Declan Doherty
2016-10-25 14:00 ` Bruce Richardson
2016-11-21 11:30 ` Ferruh Yigit [this message]
2016-11-21 11:39 ` Jan Blunck
2016-11-21 12:49 ` Ilya Maximets
2016-11-21 13:11 ` Ilya Maximets
2016-11-23 20:35 ` Jan Blunck
2016-10-18 12:28 ` Jan Blunck
2016-10-18 12:49 ` Ilya Maximets
2016-10-18 15:19 ` Jan Blunck
2016-10-19 9:47 ` Ilya Maximets
2016-10-24 14:54 ` Jan Blunck
2016-10-25 6:26 ` Ilya Maximets
2016-10-28 6:14 ` Ilya Maximets
2016-11-11 9:16 ` Ilya Maximets
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7c4bc057-93ee-42e1-b7ce-c87460aeee2a@intel.com \
--to=ferruh.yigit@intel.com \
--cc=bernard.iremonger@intel.com \
--cc=bruce.richardson@intel.com \
--cc=declan.doherty@intel.com \
--cc=dev@dpdk.org \
--cc=ehkinzie@gmail.com \
--cc=heetae82.ahn@samsung.com \
--cc=i.maximets@samsung.com \
--cc=jblunck@infradead.org \
--cc=stable@dpdk.org \
--cc=thomas.monjalon@6wind.com \
--cc=yuanhan.liu@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).