[dpdk-dev] [PATCH v6] 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
v5:
 - fix the patch_apply issue
v6:
 - rebase on Harry's patches

 doc/guides/rel_notes/release_2_2.rst |  5 +++++
 drivers/net/i40e/i40e_ethdev.c       | 23 ++++++++++++++---------
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index ca8471b..e012ccf 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -134,6 +134,11 @@ Drivers
   as long as the total number of queues used in PF, VFs, VMDq and FD does not
   exceeds the hardware maximum.
 
+* **i40e: Fixed statistics of packets.**
+
+  Fixed the issue in i40e of statistics. Added discarding packets on VSI to
+  the stats and rectify the old statistics.
+
 * **vhost: Fixed Qemu shutdown.**
 
   Fixed issue with libvirt ``virsh destroy`` not killing the VM.
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 34acc8c..df9db04 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -1858,21 +1858,26 @@ 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 = 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