[dpdk-stable] patch 'net/hns3: fix xstats with id and names' 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/642e10664fdc74999403bc2c65c843c3f73ed4f2

Thanks.

Luca Boccassi

---
>From 642e10664fdc74999403bc2c65c843c3f73ed4f2 Mon Sep 17 00:00:00 2001
From: Huisong Li <lihuisong at huawei.com>
Date: Wed, 6 Jan 2021 11:46:28 +0800
Subject: [PATCH] net/hns3: fix xstats with id and names

[ upstream commit 3213d584b698f41dbef14599a41ab0a7a78739b4 ]

Currently, validity check for ids and values in the
hns3_dev_xstats_get_by_id API is incorrect, which will
cause a problem. Namely, if the ID range of the xstats
stats item does not include the basic stats item, the
app can not obtain the corresponding xstats statistics
in hns3_dev_xstats_get_by_id.

Similarly, the hns3_dev_xstats_get_names_by_id interface
also has a problem.

Although the input parameter verification code cannot be
executed due to the implementation of the ethdev framework
interface, the driver needs to ensure the correctness of
the input parameters.

Fixes: 8839c5e202f3 ("net/hns3: support device stats")

Signed-off-by: Huisong Li <lihuisong at huawei.com>
Signed-off-by: Lijun Ou <oulijun at huawei.com>
---
 drivers/net/hns3/hns3_stats.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/net/hns3/hns3_stats.c b/drivers/net/hns3/hns3_stats.c
index 91168ac95a..1597af3545 100644
--- a/drivers/net/hns3/hns3_stats.c
+++ b/drivers/net/hns3/hns3_stats.c
@@ -933,9 +933,13 @@ hns3_dev_xstats_get_by_id(struct rte_eth_dev *dev, const uint64_t *ids,
 	uint32_t i;
 	int ret;
 
-	if (ids == NULL || size < cnt_stats)
+	if (ids == NULL && values == NULL)
 		return cnt_stats;
 
+	if (ids == NULL)
+		if (size < cnt_stats)
+			return cnt_stats;
+
 	/* Update tqp stats by read register */
 	ret = hns3_update_tqp_stats(hw);
 	if (ret) {
@@ -957,6 +961,15 @@ hns3_dev_xstats_get_by_id(struct rte_eth_dev *dev, const uint64_t *ids,
 		return -EINVAL;
 	}
 
+	if (ids == NULL && values != NULL) {
+		for (i = 0; i < cnt_stats; i++)
+			memcpy(&values[i], &values_copy[i].value,
+			       sizeof(values[i]));
+
+		rte_free(values_copy);
+		return cnt_stats;
+	}
+
 	for (i = 0; i < size; i++) {
 		if (ids[i] >= cnt_stats) {
 			hns3_err(hw, "ids[%u] (%" PRIx64 ") is invalid, "
@@ -1005,9 +1018,16 @@ hns3_dev_xstats_get_names_by_id(struct rte_eth_dev *dev,
 	uint64_t len;
 	uint32_t i;
 
-	if (ids == NULL || xstats_names == NULL)
+	if (xstats_names == NULL)
 		return cnt_stats;
 
+	if (ids == NULL) {
+		if (size < cnt_stats)
+			return cnt_stats;
+
+		return hns3_dev_xstats_get_names(dev, xstats_names, cnt_stats);
+	}
+
 	len = cnt_stats * sizeof(struct rte_eth_xstat_name);
 	names_copy = rte_zmalloc("hns3_xstats_names", len, 0);
 	if (names_copy == NULL) {
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:35.125683847 +0000
+++ 0133-net-hns3-fix-xstats-with-id-and-names.patch	2021-02-05 11:18:29.010694996 +0000
@@ -1 +1 @@
-From 3213d584b698f41dbef14599a41ab0a7a78739b4 Mon Sep 17 00:00:00 2001
+From 642e10664fdc74999403bc2c65c843c3f73ed4f2 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 3213d584b698f41dbef14599a41ab0a7a78739b4 ]
+
@@ -22 +23,0 @@
-Cc: stable at dpdk.org