[PATCH] net/bonding: fix flow flush order on bonded device close

[Andrew Rybchenko]

On 10/17/22 15:34, Chas Williams wrote:
> This appears to be correct, but it needs to be coordinated with the
> proposed changes in net/bonding: make bonded device configure method 
> re-entrant

Ivan, could you comment and send rebased v2 version anyway.

> 
> 
> On 10/17/22 04:41, Andrew Rybchenko wrote:
>> Chas, Cornor, could you review the patch, please.
>>
>> Thanks,
>> Andrew.
>>
>> On 9/11/22 15:22, Ivan Malov wrote:
>>> The current code first removes all back-end devices of
>>> the bonded device and then invokes flush operation to
>>> remove flows in such back-end devices, which makes no
>>> sense. Fix that by re-ordering the steps accordingly.
>>>
>>> Fixes: 49dad9028e2a ("net/bonding: support flow API")
>>> Cc: stable at dpdk.org
>>>
>>> Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
>>> Reviewed-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
>>> ---
>>>   drivers/net/bonding/rte_eth_bond_pmd.c | 5 ++++-
>>>   1 file changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c 
>>> b/drivers/net/bonding/rte_eth_bond_pmd.c
>>> index a5429f5e97..d01c954296 100644
>>> --- a/drivers/net/bonding/rte_eth_bond_pmd.c
>>> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
>>> @@ -2155,6 +2155,10 @@ bond_ethdev_close(struct rte_eth_dev *dev)
>>>           return 0;
>>>       RTE_BOND_LOG(INFO, "Closing bonded device %s", dev->device->name);
>>> +
>>> +    /* Flush flows in all back-end devices before removing them */
>>> +    bond_flow_ops.flush(dev, &ferror);
>>> +
>>>       while (internals->slave_count != skipped) {
>>>           uint16_t port_id = internals->slaves[skipped].port_id;
>>> @@ -2172,7 +2176,6 @@ bond_ethdev_close(struct rte_eth_dev *dev)
>>>               skipped++;
>>>           }
>>>       }
>>> -    bond_flow_ops.flush(dev, &ferror);
>>>       bond_ethdev_free_queues(dev);
>>>       rte_bitmap_reset(internals->vlan_filter_bmp);
>>>       rte_bitmap_free(internals->vlan_filter_bmp);
>>