net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings

TSO and TBS cannot coexist. For now we set i.MX Ethernet QOS controller to
use the first TX queue with TSO and the rest for TBS.

TX queues with TBS can support etf qdisc hw offload.

Signed-off-by: Esben Haabendal <esben@geanix.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
index 8f730ada71f91d70b5c1d2707601b927f20aeb79..6b65420e11b5c518251565ca94bfb4a849068436 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
@@ -353,6 +353,10 @@ static int imx_dwmac_probe(struct platform_device *pdev)
        if (data->flags & STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY)
                plat_dat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY;
 
+       /* Default TX Q0 to use TSO and rest TXQ for TBS */
+       for (int i = 1; i < plat_dat->tx_queues_to_use; i++)
+               plat_dat->tx_queues_cfg[i].tbs_en = 1;
+
        plat_dat->host_dma_width = dwmac->ops->addr_width;
        plat_dat->init = imx_dwmac_init;
        plat_dat->exit = imx_dwmac_exit;