net/sfc: avoid Rx queue setup failure if thresholds are set

Rx queue prefetch, host and writeback thresholds are used for
performance fine-tuning and not applicable to Solarflare NICs.
It is safe to just log warning and do not fail Rx queue setup
to be more friendly to DPDK applications which hardcode it.

Fixes: ce35b05c635e ("net/sfc: implement Rx queue setup release operations")
Cc: stable@dpdk.org
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 2ae095b..7816393 100644 (file)
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -780,9 +780,8 @@ sfc_rx_qcheck_conf(struct sfc_adapter *sa, uint16_t nb_rx_desc,
        if (rx_conf->rx_thresh.pthresh != 0 ||
            rx_conf->rx_thresh.hthresh != 0 ||
            rx_conf->rx_thresh.wthresh != 0) {
        if (rx_conf->rx_thresh.pthresh != 0 ||
            rx_conf->rx_thresh.hthresh != 0 ||
            rx_conf->rx_thresh.wthresh != 0) {

-               sfc_err(sa,
+               sfc_warn(sa,

                        "RxQ prefetch/host/writeback thresholds are not supported");
                        "RxQ prefetch/host/writeback thresholds are not supported");

-               rc = EINVAL;

        }
 
        if (rx_conf->rx_free_thresh > rx_free_thresh_max) {
        }
 
        if (rx_conf->rx_free_thresh > rx_free_thresh_max) {