[dpdk-stable] patch 'net/sfc: fix generic byte statistics to exclude FCS bytes' has been queued to stable release 20.11.1

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/07/21. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/10b11c2704f960de87b13e85cea75c0db0e630ed

Thanks.

Luca Boccassi

---
>From 10b11c2704f960de87b13e85cea75c0db0e630ed Mon Sep 17 00:00:00 2001
From: Viacheslav Galaktionov <viacheslav.galaktionov at oktetlabs.ru>
Date: Wed, 20 Jan 2021 15:44:18 +0300
Subject: [PATCH] net/sfc: fix generic byte statistics to exclude FCS bytes

[ upstream commit 8a6930361bcfb0374cb84e95d75ab7c01231c96e ]

Generic byte statistics should not include Ethernet FCS bytes.

Fixes: 1caab2f1e684 ("net/sfc: add basic statistics")

Signed-off-by: Viacheslav Galaktionov <viacheslav.galaktionov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
---
 drivers/net/sfc/sfc_ethdev.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index f2f5336435..a002e2c037 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -640,10 +640,19 @@ sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 			mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 		stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 		stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
+
+		/* CRC is included in these stats, but shouldn't be */
+		stats->ibytes -= stats->ipackets * RTE_ETHER_CRC_LEN;
+		stats->obytes -= stats->opackets * RTE_ETHER_CRC_LEN;
 	} else {
 		stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 		stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 		stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
+
+		/* CRC is included in these stats, but shouldn't be */
+		stats->ibytes -= mac_stats[EFX_MAC_RX_PKTS] * RTE_ETHER_CRC_LEN;
+		stats->obytes -= mac_stats[EFX_MAC_TX_PKTS] * RTE_ETHER_CRC_LEN;
+
 		/*
 		 * Take into account stats which are whenever supported
 		 * on EF10. If some stat is not supported by current
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:40.058729597 +0000
+++ 0247-net-sfc-fix-generic-byte-statistics-to-exclude-FCS-b.patch	2021-02-05 11:18:29.258699718 +0000
@@ -1 +1 @@
-From 8a6930361bcfb0374cb84e95d75ab7c01231c96e Mon Sep 17 00:00:00 2001
+From 10b11c2704f960de87b13e85cea75c0db0e630ed Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 8a6930361bcfb0374cb84e95d75ab7c01231c96e ]
+
@@ -9 +10,0 @@
-Cc: stable at dpdk.org
@@ -18 +19 @@
-index d6f6a84eab..479b4f4df6 100644
+index f2f5336435..a002e2c037 100644