[PATCH v2] ethdev: fix dev close in secondary process

[Min Hu (Connor)]

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 at huawei.com> wrote:
>>
>> From: Min Hu <humin29 at 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 at dpdk.org
>>
>> Signed-off-by: Min Hu <humin29 at 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
>>