[dpdk-stable] patch 'net/i40e: fix packet count for PF' has been queued to stable release 17.08.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/24/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From fee538b413bdaaaa96338e9e52bfcaf7d78bcef4 Mon Sep 17 00:00:00 2001
From: Qi Zhang <qi.z.zhang at intel.com>
Date: Mon, 21 Aug 2017 04:05:35 +0800
Subject: [PATCH] net/i40e: fix packet count for PF

[ upstream commit 763de290cbd1dd4ed7f5319e4f5fa8a84d990e06 ]

Previously, for PF statistics we use VSI register for packet count
but use port's register for packet bytes, that cause inconsistent
situation of PF statistics when some VF is active, since it will
cover VF's packet bytes but not packet count.

The patch will take port register for PF packet count back, but still
exclude main vsi's discard packet count.
Just like previous fix, its still not perfect, (since RX packet number
is over counted when there is VF discard packet) but seems it make the
overall better.

Fixes: 9aace75fc82e ("i40e: fix statistics")

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 8e0580c..62f25b3 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2670,13 +2670,14 @@ i40e_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 	/* call read registers - updates values, now write them to struct */
 	i40e_read_stats_registers(pf, hw);
 
-	stats->ipackets = pf->main_vsi->eth_stats.rx_unicast +
-			pf->main_vsi->eth_stats.rx_multicast +
-			pf->main_vsi->eth_stats.rx_broadcast -
+	stats->ipackets = ns->eth.rx_unicast +
+			ns->eth.rx_multicast +
+			ns->eth.rx_broadcast -
+			ns->eth.rx_discards -
 			pf->main_vsi->eth_stats.rx_discards;
-	stats->opackets = pf->main_vsi->eth_stats.tx_unicast +
-			pf->main_vsi->eth_stats.tx_multicast +
-			pf->main_vsi->eth_stats.tx_broadcast;
+	stats->opackets = ns->eth.tx_unicast +
+			ns->eth.tx_multicast +
+			ns->eth.tx_broadcast;
 	stats->ibytes   = ns->eth.rx_bytes;
 	stats->obytes   = ns->eth.tx_bytes;
 	stats->oerrors  = ns->eth.tx_errors +
-- 
2.7.4