[dpdk-dev] [PATCH v2] net/bonding: fix update link status on slave add

[Ferruh Yigit]

On 5/31/2018 4:34 PM, Ferruh Yigit wrote:
> On 5/31/2018 3:34 PM, Radu Nicolau wrote:
> 
> I can see you just prefix "fix" to the title without updating it :)
> 
> What about following one:
> "net/bonding: fix slave add for mode 4" ?
> 
>> Add a call to rte_eth_link_get_nowait on every slave to update
>> the internal link status struct. Otherwise slave add will fail
>> for mode 4 if the ports are all stopped but only one of them checked.
> 
> What is the link related expectation from slaves in mode 4?
> 
> What does "if the ports are all stopped but only one of them checked" mean, why
> checking only one of them?
> 
>>
>> Fixes: b77d21cc2364 ("ethdev: add link status get/set helper functions")
>> Bugzilla entry: https://dpdk.org/tracker/show_bug.cgi?id=52

Bugzilla ID: 52

btw, can you please send new version as reply to previous version?

>>
>> Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
>> ---
>> v2: add fix and Bugzilla references
>>
>>  drivers/net/bonding/rte_eth_bond_api.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/bonding/rte_eth_bond_api.c b/drivers/net/bonding/rte_eth_bond_api.c
>> index d558df8..cad08b9 100644
>> --- a/drivers/net/bonding/rte_eth_bond_api.c
>> +++ b/drivers/net/bonding/rte_eth_bond_api.c
>> @@ -296,6 +296,8 @@ __eth_bond_slave_add_lock_free(uint16_t bonded_port_id, uint16_t slave_port_id)
>>  		return -1;
>>  	}
>>  
>> +	rte_eth_link_get_nowait(slave_port_id, &link_props);
>> +
> 
> The error seems in link_properties_valid(), does it make sense to get link info
> inside that function before link checks?
> 
>>  	slave_add(internals, slave_eth_dev);
>>  
>>  	/* We need to store slaves reta_size to be able to synchronize RETA for all
>>
>