Re: [PATCH net-next 2/2] net: stmmac: fix number of tx queues in stmmac_poll

[Corentin Labbe <clabbe.montjoie@gmail.com>]

On Mon, Mar 27, 2017 at 10:04:57AM +0100, Joao Pinto wrote:
> Às 7:26 AM de 3/25/2017, Corentin Labbe escreveu:
> > On Fri, Mar 24, 2017 at 05:16:45PM +0000, Joao Pinto wrote:
> >> For cores that have more than 1 TX queue configured, the kernel would crash,
> >> since only one TX queue is permitted by default.
> >>
> >> Signed-off-by: Joao Pinto <jpinto@synopsys.com>
> >> ---
> >>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
> >>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> >> index 3827952..1eab084 100644
> >> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> >> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> >> @@ -3429,7 +3429,7 @@ static int stmmac_poll(struct napi_struct *napi, int budget)
> >>  	struct stmmac_rx_queue *rx_q =
> >>  		container_of(napi, struct stmmac_rx_queue, napi);
> >>  	struct stmmac_priv *priv = rx_q->priv_data;
> >> -	u32 tx_count = priv->dma_cap.number_tx_queues;
> >> +	u32 tx_count = priv->plat->tx_queues_to_use;
> >>  	u32 chan = rx_q->queue_index;
> >>  	u32 work_done = 0;
> >>  	u32 queue = 0;
> >> -- 
> >> 2.9.3
> >>
> > 
> > This patch fix the performance issue on dwmac-sun8i only.
> 
> Ok, great!
> 

Sorry, in the we, I see that my gigabit dwmac-sun8i didnt work... (but didnt have time to find why).

> > The dwmac-sunxi is still broken.
> > 
> 
> What is the difference between the setups?

dwmac-sun8i use chain mode, dwmac-sunxi use ring mode