[dpdk-dev] [PATCH] net/bonding: fix slave activation simultaneously

[Doherty, Declan]

On 24/04/2018 12:29 PM, Matan Azrad wrote:
> The bonding PMD decides to activate\deactivate its slaves according to
> the slaves link statuses.
> Thus, it registers to the LSC events of the slaves ports and
> activates\deactivates them from its LSC callbacks called asynchronously
> by the host thread when the slave link status is changed.
> 
> In addition, the bonding PMD uses the callback for slave activation
> when it tries to start it, this operation is probably called by the
> master thread.
> 
> Consequently, a slave may be activated in the same time by two
> different threads and may cause a lot of optional errors, for example,
> slave mempool recreation with the same name causes an error.
> 
> Synchronize the critical section in the LSC callback using a special
> new spinlock.
> 
> Fixes: 414b202343ce ("bonding: fix initial link status of slave")
> Fixes: a45b288ef21a ("bond: support link status polling")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Matan Azrad <matan at mellanox.com>
> ---
...
> 

Acked-by: Declan Doherty <declan.doherty at intel.com>