[dpdk-stable] patch 'net/hns3: fix flow director rule residue on malloc failure' 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 02/11/21. 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/ffb6a48b68564c01ba98333d4fabf4107e937019

Thanks.

Luca Boccassi

---
>From ffb6a48b68564c01ba98333d4fabf4107e937019 Mon Sep 17 00:00:00 2001
From: Chengwen Feng <fengchengwen at huawei.com>
Date: Wed, 3 Feb 2021 20:23:54 +0800
Subject: [PATCH] net/hns3: fix flow director rule residue on malloc failure

[ upstream commit 2b9a66e1b606d3813d72dd81c626949e09706e27 ]

After FD rule config success, driver will malloc fdir_rule to hold the
rule info, if malloc fail the FD rule in hardware was not cleanup.

Fixes: fcba820d9b9e ("net/hns3: support flow director")

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
Signed-off-by: Lijun Ou <oulijun at huawei.com>
---
 drivers/net/hns3/hns3_flow.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/net/hns3/hns3_flow.c b/drivers/net/hns3/hns3_flow.c
index d1bf9832a9..8e4519a425 100644
--- a/drivers/net/hns3/hns3_flow.c
+++ b/drivers/net/hns3/hns3_flow.c
@@ -1822,17 +1822,18 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 
 		flow->counter_id = fdir_rule.act_cnt.id;
 	}
+
+	fdir_rule_ptr = rte_zmalloc("hns3 fdir rule",
+				    sizeof(struct hns3_fdir_rule_ele),
+				    0);
+	if (fdir_rule_ptr == NULL) {
+		hns3_err(hw, "failed to allocate fdir_rule memory.");
+		ret = -ENOMEM;
+		goto err_fdir;
+	}
+
 	ret = hns3_fdir_filter_program(hns, &fdir_rule, false);
 	if (!ret) {
-		fdir_rule_ptr = rte_zmalloc("hns3 fdir rule",
-					    sizeof(struct hns3_fdir_rule_ele),
-					    0);
-		if (fdir_rule_ptr == NULL) {
-			hns3_err(hw, "Failed to allocate fdir_rule memory");
-			ret = -ENOMEM;
-			goto err_fdir;
-		}
-
 		memcpy(&fdir_rule_ptr->fdir_conf, &fdir_rule,
 			sizeof(struct hns3_fdir_rule));
 		TAILQ_INSERT_TAIL(&process_list->fdir_list,
@@ -1843,10 +1844,10 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 		return flow;
 	}
 
+	rte_free(fdir_rule_ptr);
 err_fdir:
 	if (fdir_rule.flags & HNS3_RULE_FLAG_COUNTER)
 		hns3_counter_release(dev, fdir_rule.act_cnt.id);
-
 err:
 	rte_flow_error_set(error, -ret, RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 			   "Failed to create flow");
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-09 10:34:58.654756438 +0000
+++ 0018-net-hns3-fix-flow-director-rule-residue-on-malloc-fa.patch	2021-02-09 10:34:57.910584004 +0000
@@ -1 +1 @@
-From 2b9a66e1b606d3813d72dd81c626949e09706e27 Mon Sep 17 00:00:00 2001
+From ffb6a48b68564c01ba98333d4fabf4107e937019 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 2b9a66e1b606d3813d72dd81c626949e09706e27 ]
+
@@ -10 +11,0 @@
-Cc: stable at dpdk.org
@@ -19 +20 @@
-index c484114b32..a016857aa5 100644
+index d1bf9832a9..8e4519a425 100644
@@ -22 +23 @@
-@@ -1806,17 +1806,18 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -1822,17 +1822,18 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
@@ -50 +51 @@
-@@ -1827,10 +1828,10 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
+@@ -1843,10 +1844,10 @@ hns3_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,