[dpdk-dev] ethdev: fixed device info get issue
Checks
Commit Message
This patch fixed error function call order in rte_eth_dev_configure.
This wrong order makes user can't get correct device informations,
and cause DCB configure issue.
Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
lib/librte_ethdev/rte_ethdev.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Comments
On 05/15/2018 07:10 PM, Qiming Yang wrote:
> This patch fixed error function call order in rte_eth_dev_configure.
> This wrong order makes user can't get correct device informations,
> and cause DCB configure issue.
>
> Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
>
> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
> ---
> lib/librte_ethdev/rte_ethdev.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index b3ed821..97316f3 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -1053,6 +1053,9 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
>
> + /* Copy the dev_conf parameter into the dev structure */
> + memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
> +
> rte_eth_dev_info_get(port_id, &dev_info);
>
> /* If number of queues specified by application for both Rx and Tx is
> @@ -1098,9 +1101,6 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
> rte_eth_convert_rx_offload_bitfield(
> &dev_conf->rxmode, &local_conf.rxmode.offloads);
>
> - /* Copy the dev_conf parameter into the dev structure */
> - memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
> -
As I understand the goal of this copy is to pickup offloads fill in done
three lines
above. The patch breaks it.
> /*
> * Check that the numbers of RX and TX queues are not greater
> * than the maximum number of RX and TX queues supported by the
On 5/15/2018 9:41 AM, Andrew Rybchenko wrote:
> On 05/15/2018 07:10 PM, Qiming Yang wrote:
>> This patch fixed error function call order in rte_eth_dev_configure.
>> This wrong order makes user can't get correct device informations,
>> and cause DCB configure issue.
>>
>> Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
>>
>> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
>> ---
>> lib/librte_ethdev/rte_ethdev.c | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
>> index b3ed821..97316f3 100644
>> --- a/lib/librte_ethdev/rte_ethdev.c
>> +++ b/lib/librte_ethdev/rte_ethdev.c
>> @@ -1053,6 +1053,9 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
>> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
>>
>> + /* Copy the dev_conf parameter into the dev structure */
>> + memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
>> +
>> rte_eth_dev_info_get(port_id, &dev_info);
>>
>> /* If number of queues specified by application for both Rx and Tx is
>> @@ -1098,9 +1101,6 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
>> rte_eth_convert_rx_offload_bitfield(
>> &dev_conf->rxmode, &local_conf.rxmode.offloads);
>>
>> - /* Copy the dev_conf parameter into the dev structure */
>> - memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
>> -
>
> As I understand the goal of this copy is to pickup offloads fill in done
> three lines
> above. The patch breaks it.
It can be possible to copy only local_conf.rxmode.offloads here:
dev->data->dev_conf.rxmode.offloads = local_conf.rxmode.offloads;
And this assignment can be done within
"if (dev_conf->rxmode.ignore_offload_bitfield == 0)" block
And can you please add a comment to memcpy that it is required for
dev_infos_get() and needs to be called before it.
Also more details into commit log why this is required for DCB configure.
>
>> /*
>> * Check that the numbers of RX and TX queues are not greater
>> * than the maximum number of RX and TX queues supported by the
>
> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Tuesday, May 15, 2018 7:31 PM
> To: Andrew Rybchenko <arybchenko@solarflare.com>; Yang, Qiming
> <qiming.yang@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org
> Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] ethdev: fixed device info get issue
>
> On 5/15/2018 9:41 AM, Andrew Rybchenko wrote:
> > On 05/15/2018 07:10 PM, Qiming Yang wrote:
> >> This patch fixed error function call order in rte_eth_dev_configure.
> >> This wrong order makes user can't get correct device informations,
> >> and cause DCB configure issue.
> >>
> >> Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
> >>
> >> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
> >> ---
> >> lib/librte_ethdev/rte_ethdev.c | 6 +++---
> >> 1 file changed, 3 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/lib/librte_ethdev/rte_ethdev.c
> >> b/lib/librte_ethdev/rte_ethdev.c index b3ed821..97316f3 100644
> >> --- a/lib/librte_ethdev/rte_ethdev.c
> >> +++ b/lib/librte_ethdev/rte_ethdev.c
> >> @@ -1053,6 +1053,9 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t
> nb_rx_q, uint16_t nb_tx_q,
> >> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -
> ENOTSUP);
> >> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -
> ENOTSUP);
> >>
> >> + /* Copy the dev_conf parameter into the dev structure */
> >> + memcpy(&dev->data->dev_conf, &local_conf,
> >> +sizeof(dev->data->dev_conf));
> >> +
> >> rte_eth_dev_info_get(port_id, &dev_info);
> >>
> >> /* If number of queues specified by application for both Rx and Tx
> >> is @@ -1098,9 +1101,6 @@ rte_eth_dev_configure(uint16_t port_id,
> uint16_t nb_rx_q, uint16_t nb_tx_q,
> >> rte_eth_convert_rx_offload_bitfield(
> >> &dev_conf->rxmode,
> &local_conf.rxmode.offloads);
> >>
> >> - /* Copy the dev_conf parameter into the dev structure */
> >> - memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data-
> >dev_conf));
> >> -
> >
> > As I understand the goal of this copy is to pickup offloads fill in
> > done three lines above. The patch breaks it.
>
> It can be possible to copy only local_conf.rxmode.offloads here:
> dev->data->dev_conf.rxmode.offloads = local_conf.rxmode.offloads;
>
> And this assignment can be done within
> "if (dev_conf->rxmode.ignore_offload_bitfield == 0)" block
>
Thanks for the solution.
> And can you please add a comment to memcpy that it is required for
> dev_infos_get() and needs to be called before it.
> Also more details into commit log why this is required for DCB configure.
>
Sure, I'll add detail comment.
> >
> >> /*
> >> * Check that the numbers of RX and TX queues are not greater
> >> * than the maximum number of RX and TX queues supported by the
> >
From: Andrew Rybchenko [mailto:arybchenko@solarflare.com]
Sent: Tuesday, May 15, 2018 4:42 PM
To: Yang, Qiming <qiming.yang@intel.com>; dev@dpdk.org
Cc: stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] ethdev: fixed device info get issue
On 05/15/2018 07:10 PM, Qiming Yang wrote:
This patch fixed error function call order in rte_eth_dev_configure.
This wrong order makes user can't get correct device informations,
and cause DCB configure issue.
Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
Signed-off-by: Qiming Yang <qiming.yang@intel.com><mailto:qiming.yang@intel.com>
---
lib/librte_ethdev/rte_ethdev.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index b3ed821..97316f3 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -1053,6 +1053,9 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
+ /* Copy the dev_conf parameter into the dev structure */
+ memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
+
rte_eth_dev_info_get(port_id, &dev_info);
/* If number of queues specified by application for both Rx and Tx is
@@ -1098,9 +1101,6 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
rte_eth_convert_rx_offload_bitfield(
&dev_conf->rxmode, &local_conf.rxmode.offloads);
- /* Copy the dev_conf parameter into the dev structure */
- memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
-
As I understand the goal of this copy is to pickup offloads fill in done three lines
above. The patch breaks it.
Thanks for your reminder, I don’t know the background before. But Ferruh give a solution to resolve
The conflict. I’ll send a v2 patch later.
/*
* Check that the numbers of RX and TX queues are not greater
* than the maximum number of RX and TX queues supported by the
@@ -1053,6 +1053,9 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
+ /* Copy the dev_conf parameter into the dev structure */
+ memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
+
rte_eth_dev_info_get(port_id, &dev_info);
/* If number of queues specified by application for both Rx and Tx is
@@ -1098,9 +1101,6 @@ rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
rte_eth_convert_rx_offload_bitfield(
&dev_conf->rxmode, &local_conf.rxmode.offloads);
- /* Copy the dev_conf parameter into the dev structure */
- memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
-
/*
* Check that the numbers of RX and TX queues are not greater
* than the maximum number of RX and TX queues supported by the