netdev - [PATCH] ixgbe: on recv increment rx.ring->stats.yields instead of tx

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Message-Id: <1449818646-29348-1-git-send-email-ptikhomirov@virtuozzo.com>
Date:	Fri, 11 Dec 2015 10:24:06 +0300
From:	Pavel Tikhomirov <ptikhomirov@...tuozzo.com>
To:	intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:	Andrew Vagin <avagin@...allels.com>,
	Konstantin Khorenko <khorenko@...allels.com>,
	<devel@...nvz.org>
Subject: [PATCH] ixgbe: on recv increment rx.ring->stats.yields instead of tx

It seem to be non intentionaly changed to tx in
ms commit: adc810900a703ee78fe88fd65e086d359fec04b2
ixgbe: Refactor busy poll socket code to address multiple issues

Lock is taken from ixgbe_low_latency_recv, and there under this
lock we use ixgbe_clean_rx_irq so it looks wrong for me to increment
tx counter.

Yield stats can be shown through ethtool:
ethtool -S enp129s0 | grep yield

Signed-off-by: Pavel Tikhomirov <ptikhomirov@...tuozzo.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 1d21745..7656d46 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -451,7 +451,7 @@ static inline bool ixgbe_qv_lock_poll(struct ixgbe_q_vector *q_vector)
 				IXGBE_QV_STATE_POLL);
 #ifdef BP_EXTENDED_STATS
 	if (rc != IXGBE_QV_STATE_IDLE)
-		q_vector->tx.ring->stats.yields++;
+		q_vector->rx.ring->stats.yields++;
 #endif
 	return rc == IXGBE_QV_STATE_IDLE;
 }
-- 
1.9.3

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