[v2] ethdev: fix dev close in secondary process

  From: Min Hu <humin29@huawei.com>

Secondary process need to close dev to release process private resources.
But secondary process should not be obliged to wait for device stop before
closing ethdev.

This patch fixed it.

Fixes: febc855b358e ("ethdev: forbid closing started device")
Cc: stable@dpdk.org

Signed-off-by: Min Hu <humin29@huawei.com>
---
v2:
* fixed comment.
---
 lib/ethdev/rte_ethdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
  

On Tue, May 31, 2022 at 6:32 PM Min Hu (Connor) <humin29@huawei.com> wrote:
>
> From: Min Hu <humin29@huawei.com>
>
> Secondary process need to close dev to release process private resources.
> But secondary process should not be obliged to wait for device stop before
> closing ethdev.
>
> This patch fixed it.
>
> Fixes: febc855b358e ("ethdev: forbid closing started device")
> Cc: stable@dpdk.org
>
> Signed-off-by: Min Hu <humin29@huawei.com>
> ---
> v2:
> * fixed comment.
> ---
>  lib/ethdev/rte_ethdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
> index 09abee6345..f34c6580a4 100644
> --- a/lib/ethdev/rte_ethdev.c
> +++ b/lib/ethdev/rte_ethdev.c
> @@ -1574,7 +1574,8 @@ rte_eth_dev_close(uint16_t port_id)
>         RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
>         dev = &rte_eth_devices[port_id];
>
> -       if (dev->data->dev_started) {
It will be good to add the comment as a part of the code as well.
That way someone in future won't have to look at the commit log to
understand the behavior.

> +       if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
> +                       dev->data->dev_started) {
>                 RTE_ETHDEV_LOG(ERR, "Cannot close started device (port %u)\n",
>                                port_id);
>                 return -EINVAL;
> --
> 2.33.0
>
  

Hi, Ajit
v3 has been sent, thanks

在 2022/6/1 10:01, Ajit Khaparde 写道:
> On Tue, May 31, 2022 at 6:32 PM Min Hu (Connor) <humin29@huawei.com> wrote:
>>
>> From: Min Hu <humin29@huawei.com>
>>
>> Secondary process need to close dev to release process private resources.
>> But secondary process should not be obliged to wait for device stop before
>> closing ethdev.
>>
>> This patch fixed it.
>>
>> Fixes: febc855b358e ("ethdev: forbid closing started device")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Min Hu <humin29@huawei.com>
>> ---
>> v2:
>> * fixed comment.
>> ---
>>   lib/ethdev/rte_ethdev.c | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
>> index 09abee6345..f34c6580a4 100644
>> --- a/lib/ethdev/rte_ethdev.c
>> +++ b/lib/ethdev/rte_ethdev.c
>> @@ -1574,7 +1574,8 @@ rte_eth_dev_close(uint16_t port_id)
>>          RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
>>          dev = &rte_eth_devices[port_id];
>>
>> -       if (dev->data->dev_started) {
> It will be good to add the comment as a part of the code as well.
> That way someone in future won't have to look at the commit log to
> understand the behavior.
> 
>> +       if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
>> +                       dev->data->dev_started) {
>>                  RTE_ETHDEV_LOG(ERR, "Cannot close started device (port %u)\n",
>>                                 port_id);
>>                  return -EINVAL;
>> --
>> 2.33.0
>>
  

On Tue, May 31, 2022 at 8:18 PM Min Hu (Connor) <humin29@huawei.com> wrote:
>
> Hi, Ajit
> v3 has been sent, thanks
Thanks