[dpdk-dev] [PATCH v4] i40e: Fix the statistics issue of i40e

[Xutao Sun <xutao.sun@intel.com>]

The old statistics on i40e only counted the packets on ports.
So the discarding packets on VSI were not counted.
This patch is to make statistics for packets both on ports and VSI.
Also update release notes.

Signed-off-by: Xutao Sun <xutao.sun@intel.com>
---
v2:
 - reword comments
v3:
 - update release notes
v4:
 - fix the wrong release notes and move the doc as part of this patch

 doc/guides/rel_notes/release_2_2.rst |  4 ++++
 drivers/net/i40e/i40e_ethdev.c       | 23 ++++++++++++++---------
 2 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 682f468..e80c20d 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -8,6 +8,10 @@ New Features
 Resolved Issues
 ---------------
 
+* **i40e: Fix statistics of packets.**
+
+  Add discarding packets on VSI to the stats and rectify the old statistics.
+
 
 Known Issues
 ------------
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 40b0526..5e20fa7 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -1511,21 +1511,26 @@ i40e_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 	if (pf->main_vsi)
 		i40e_update_vsi_stats(pf->main_vsi);
 
-	stats->ipackets = ns->eth.rx_unicast + ns->eth.rx_multicast +
-						ns->eth.rx_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;
-	stats->imcasts  = ns->eth.rx_multicast;
+	stats->ipackets = pf->main_vsi->eth_stats.rx_unicast +
+				pf->main_vsi->eth_stats.rx_multicast +
+				pf->main_vsi->eth_stats.rx_broadcast -
+				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->ibytes   = pf->main_vsi->eth_stats.rx_bytes;
+	stats->obytes   = pf->main_vsi->eth_stats.tx_bytes;
+	stats->oerrors  = ns->eth.tx_errors +
+				pf->main_vsi->eth_stats.tx_errors;
+	stats->imcasts  = pf->main_vsi->eth_stats.rx_multicast;
 	stats->fdirmatch = ns->fd_sb_match;
 
 	/* Rx Errors */
 	stats->ibadcrc  = ns->crc_errors;
 	stats->ibadlen  = ns->rx_length_errors + ns->rx_undersize +
 			ns->rx_oversize + ns->rx_fragments + ns->rx_jabber;
-	stats->imissed  = ns->eth.rx_discards;
+	stats->imissed  = ns->eth.rx_discards +
+				pf->main_vsi->eth_stats.rx_discards;
 	stats->ierrors  = stats->ibadcrc + stats->ibadlen + stats->imissed;
 
 	PMD_DRV_LOG(DEBUG, "***************** PF stats start *******************");
-- 
1.9.3