patch 'net/hns3: fix config struct used for conversion' has been queued to stable release 22.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 22.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/01/23. 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://git.dpdk.org/dpdk-stable/log/?h=22.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=22.11-staging&id=5c129d88989ba3c08c0a34d9145a11e0e31cf588

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 5c129d88989ba3c08c0a34d9145a11e0e31cf588 Mon Sep 17 00:00:00 2001
From: Huisong Li <lihuisong at huawei.com>
Date: Tue, 31 Jan 2023 21:02:59 +0800
Subject: [PATCH] net/hns3: fix config struct used for conversion
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 815c7db53167f7ee1573dca18fa7f889e44764d4 ]

When the type in 'struct rte_flow_action' is RTE_FLOW_ACTION_TYPE_RSS,
the 'conf' pointer references the 'struct rte_flow_action_rss' instead
of the 'struct hns3_rss_conf' in driver. But driver uses 'struct
hns3_rss_conf' to convert this 'conf' pointer to get RSS action
configuration.

In addition, RSS filter configuration is directly cloned to RSS filter
node instead of coping it after successfully setting to hardware.

Fixes: c37ca66f2b27 ("net/hns3: support RSS")

Signed-off-by: Huisong Li <lihuisong at huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3 at huawei.com>
---
 drivers/net/hns3/hns3_flow.c | 59 ++++++++++++++----------------------
 1 file changed, 22 insertions(+), 37 deletions(-)

diff --git a/drivers/net/hns3/hns3_flow.c b/drivers/net/hns3/hns3_flow.c
index fbc38dd3d4..a30b19cfdb 100644
--- a/drivers/net/hns3/hns3_flow.c
+++ b/drivers/net/hns3/hns3_flow.c
@@ -95,8 +95,8 @@ static const struct rte_flow_action *
 hns3_find_rss_general_action(const struct rte_flow_item pattern[],
 			     const struct rte_flow_action actions[])
 {
+	const struct rte_flow_action_rss *rss_act;
 	const struct rte_flow_action *act = NULL;
-	const struct hns3_rss_conf *rss;
 	bool have_eth = false;

 	for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
@@ -115,8 +115,8 @@ hns3_find_rss_general_action(const struct rte_flow_item pattern[],
 		}
 	}

-	rss = act->conf;
-	if (have_eth && rss->conf.queue_num) {
+	rss_act = act->conf;
+	if (have_eth && rss_act->queue_num) {
 		/*
 		 * Pattern have ETH and action's queue_num > 0, indicate this is
 		 * queue region configuration.
@@ -1296,30 +1296,6 @@ hns3_action_rss_same(const struct rte_flow_action_rss *comp,
 			sizeof(*with->queue) * with->queue_num));
 }

-static int
-hns3_rss_conf_copy(struct hns3_rss_conf *out,
-		   const struct rte_flow_action_rss *in)
-{
-	if (in->key_len > RTE_DIM(out->key) ||
-	    in->queue_num > RTE_DIM(out->queue))
-		return -EINVAL;
-	if (in->key == NULL && in->key_len)
-		return -EINVAL;
-	out->conf = (struct rte_flow_action_rss) {
-		.func = in->func,
-		.level = in->level,
-		.types = in->types,
-		.key_len = in->key_len,
-		.queue_num = in->queue_num,
-	};
-	out->conf.queue = memcpy(out->queue, in->queue,
-				sizeof(*in->queue) * in->queue_num);
-	if (in->key)
-		out->conf.key = memcpy(out->key, in->key, in->key_len);
-
-	return 0;
-}
-
 static bool
 hns3_rss_input_tuple_supported(struct hns3_hw *hw,
 			       const struct rte_flow_action_rss *rss)
@@ -1733,9 +1709,10 @@ hns3_flow_create_rss_rule(struct rte_eth_dev *dev,
 			  struct rte_flow *flow)
 {
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	const struct rte_flow_action_rss *rss_act;
 	struct hns3_rss_conf_ele *rss_filter_ptr;
 	struct hns3_rss_conf_ele *filter_ptr;
-	const struct hns3_rss_conf *rss_conf;
+	struct hns3_rss_conf *new_conf;
 	int ret;

 	rss_filter_ptr = rte_zmalloc("hns3 rss filter",
@@ -1745,19 +1722,27 @@ hns3_flow_create_rss_rule(struct rte_eth_dev *dev,
 		return -ENOMEM;
 	}

-	/*
-	 * After all the preceding tasks are successfully configured, configure
-	 * rules to the hardware to simplify the rollback of rules in the
-	 * hardware.
-	 */
-	rss_conf = (const struct hns3_rss_conf *)act->conf;
-	ret = hns3_flow_parse_rss(dev, rss_conf, true);
+	rss_act = (const struct rte_flow_action_rss *)act->conf;
+	new_conf = &rss_filter_ptr->filter_info;
+	memcpy(&new_conf->conf, rss_act, sizeof(*rss_act));
+	if (rss_act->queue_num > 0) {
+		memcpy(new_conf->queue, rss_act->queue,
+		       rss_act->queue_num * sizeof(new_conf->queue[0]));
+		new_conf->conf.queue = new_conf->queue;
+	}
+	if (rss_act->key_len > 0) {
+		if (rss_act->key != NULL) {
+			memcpy(new_conf->key, rss_act->key,
+			       rss_act->key_len * sizeof(new_conf->key[0]));
+			new_conf->conf.key = new_conf->key;
+		}
+	}
+
+	ret = hns3_flow_parse_rss(dev, new_conf, true);
 	if (ret != 0) {
 		rte_free(rss_filter_ptr);
 		return ret;
 	}
-
-	hns3_rss_conf_copy(&rss_filter_ptr->filter_info, &rss_conf->conf);
 	rss_filter_ptr->filter_info.valid = true;

 	/*
--
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-02-27 14:08:44.249532800 +0800
+++ 0105-net-hns3-fix-config-struct-used-for-conversion.patch	2023-02-27 14:08:40.849237000 +0800
@@ -1 +1 @@
-From 815c7db53167f7ee1573dca18fa7f889e44764d4 Mon Sep 17 00:00:00 2001
+From 5c129d88989ba3c08c0a34d9145a11e0e31cf588 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 815c7db53167f7ee1573dca18fa7f889e44764d4 ]
@@ -16 +18,0 @@
-Cc: stable at dpdk.org
@@ -25 +27 @@
-index 632247b846..dd762c02cb 100644
+index fbc38dd3d4..a30b19cfdb 100644