[Linux-stm32] [PATCH net] net: stmmac: Re-work the queue selection for TSO packets

[David Miller]

From: Jose Abreu <Jose.Abreu at synopsys.com>
Date: Mon,  8 Jul 2019 14:26:28 +0200

> Ben Hutchings says:
> 	"This is the wrong place to change the queue mapping.
> 	stmmac_xmit() is called with a specific TX queue locked,
> 	and accessing a different TX queue results in a data race
> 	for all of that queue's state.
> 
> 	I think this commit should be reverted upstream and in all
> 	stable branches.  Instead, the driver should implement the
> 	ndo_select_queue operation and override the queue mapping there."
> 
> Fixes: c5acdbee22a1 ("net: stmmac: Send TSO packets always from Queue 0")
> Suggested-by: Ben Hutchings <ben at decadent.org.uk>
> Signed-off-by: Jose Abreu <joabreu at synopsys.com>

Applied and queued up for -stable.