[dpdk-dev] [PATCH 1/2] net/sfc: avoid Rx queue setup failure if thresholds are set

Andrew Rybchenko arybchenko at solarflare.com
Tue Nov 14 12:32:34 CET 2017


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 at dpdk.org

Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/sfc_rx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 2ae095b..7816393 100644
--- 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) {
-		sfc_err(sa,
+		sfc_warn(sa,
 			"RxQ prefetch/host/writeback thresholds are not supported");
-		rc = EINVAL;
 	}
 
 	if (rx_conf->rx_free_thresh > rx_free_thresh_max) {
-- 
2.7.4



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