[dpdk-stable] [PATCH v2] ethdev: limit maximum number of queues

[David Marchand]

On Wed, Nov 27, 2019 at 3:31 PM Thomas Monjalon <thomas at monjalon.net> wrote:
>
> A buffer overflow happens in testpmd with some drivers
> since the queue arrays are limited to RTE_MAX_QUEUES_PER_PORT.
>
> The advertised capabilities of mlx4, mlx5 and softnic
> for the number of queues were the maximum number: UINT16_MAX.
> They must be limited by the configured RTE_MAX_QUEUES_PER_PORT
> that applications expect to be respected.
>
> The limitation is applied at ethdev level (function rte_eth_dev_info_get),
> in order to force the configured limit for all drivers.
>
> Fixes: 14b53e27b30e ("ethdev: fix crash with multiprocess")
> Cc: stable at dpdk.org
>
> Reported-by: Raslan Darawsheh <rasland at mellanox.com>
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
> Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>

Reviewed-by: David Marchand <david.marchand at redhat.com>


-- 
David Marchand