[PATCH] IB/ipoib: Suppress the retry related completion errors

[PATCH] IB/ipoib: Suppress the retry related completion errors

[Yuval Shaia]

From: Santosh Shilimkar <santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

IPoIB doesn't support transport/rnr retry schemes as per
RFC so those errors are expected. No need to flood the
log files with them.

Tested-by: Michael Nowak <michael.nowak-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Tested-by: Rafael Alejandro Peralez <rafael.peralez-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Tested-by: Liwen Huang <liwen.huang-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Tested-by: Hong Liu <hong.x.liu-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Mukesh Kacker <mukesh.kacker-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reported-by: Rajiv Raja <rajiv.raja-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/ulp/ipoib/ipoib_cm.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 14b62f7472b4..7774654c2ccb 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -823,12 +823,18 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 	    wc->status != IB_WC_WR_FLUSH_ERR) {
 		struct ipoib_neigh *neigh;
 
-		if (wc->status != IB_WC_RNR_RETRY_EXC_ERR)
-			ipoib_warn(priv, "failed cm send event (status=%d, wrid=%d vend_err %x)\n",
-				   wc->status, wr_id, wc->vendor_err);
+		/* IB_WC[_RNR]_RETRY_EXC_ERR error is part of the life cycle,
+		 * so don't make waves.
+		 */
+		if (wc->status == IB_WC_RNR_RETRY_EXC_ERR ||
+		    wc->status == IB_WC_RETRY_EXC_ERR)
+			ipoib_dbg(priv,
+				  "%s: failed cm send event (status=%d, wrid=%d vend_err 0x%x)\n",
+				   __func__, wc->status, wr_id, wc->vendor_err);
 		else
-			ipoib_dbg(priv, "failed cm send event (status=%d, wrid=%d vend_err %x)\n",
-				  wc->status, wr_id, wc->vendor_err);
+			ipoib_warn(priv,
+				    "%s: failed cm send event (status=%d, wrid=%d vend_err 0x%x)\n",
+				   __func__, wc->status, wr_id, wc->vendor_err);
 
 		spin_lock_irqsave(&priv->lock, flags);
 		neigh = tx->neigh;
-- 
2.13.5

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Re: [PATCH] IB/ipoib: Suppress the retry related completion errors

[Doug Ledford]

On Thu, 2017-09-07 at 13:38 +0300, Yuval Shaia wrote:
> From: Santosh Shilimkar <santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> 
> IPoIB doesn't support transport/rnr retry schemes as per
> RFC so those errors are expected. No need to flood the
> log files with them.
> 
> Tested-by: Michael Nowak <michael.nowak-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Tested-by: Rafael Alejandro Peralez <rafael.peralez-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Tested-by: Liwen Huang <liwen.huang-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Tested-by: Hong Liu <hong.x.liu-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Reviewed-by: Mukesh Kacker <mukesh.kacker-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Reported-by: Rajiv Raja <rajiv.raja-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Santosh Shilimkar <santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

Even though this is a minor printk patch that could easily go to for-
next, because it brings us more into compliance with the RFC I went
ahead and processed it for rc.  Thanks.

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG KeyID: B826A3330E572FDD
    Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD

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