[dpdk-dev] [PATCH] ethdev: fix link status query

[Thomas Monjalon]

10/04/2018 10:20, Nélio Laranjeiro:
> On Tue, Apr 10, 2018 at 09:16:31AM +0300, Shahaf Shuler wrote:
> > When application works with LSC interrupts the ethdev layer skips
> > the PMD callback and update according to the link status exists on
> > device data. It is because it assumes the link status on the device data
> > is the correct one since any link change is processed by the application.
> > 
> > As multiple PMDs install the link status interrupt handler only on port
> > start and uninstall it on port stop, the link status may be incorrect in
> > case the query is called after port stop or before port start.
> 
> It seems also logical to not process interrupts from stopped device,
> for them accessing to the link status should always end by calling the
> devop function.
> 
> This patch is the result of discussion on thread [1].
> 
> > Fixing the query implementation to use the PMD callback for such cases.
> > 
> > Fixes: b77d21cc2364 ("ethdev: add link status get/set helper functions")
> > Cc: stable at dpdk.org
> > Cc: stephen at networkplumber.org
> > Cc: nelio.laranjeiro at 6wind.com
> 
> Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
> 
> > Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>

Looks OK

Acked-by: Thomas Monjalon <thomas at monjalon.net>