patch 'kni: use dedicated function to set MAC address' has been queued to stable release 20.11.6

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 20.11.6

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/23/22. 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/steevenlee/dpdk

This queued commit can be viewed at:
https://github.com/steevenlee/dpdk/commit/3590f93137200914516a66452535016088b0cb5f

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 3590f93137200914516a66452535016088b0cb5f Mon Sep 17 00:00:00 2001
From: Ke Zhang <ke1x.zhang at intel.com>
Date: Wed, 8 Jun 2022 15:11:17 +0300
Subject: [PATCH] kni: use dedicated function to set MAC address
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit b99bd4a0aacab47165d045a6aeee88ee74744600 ]

The warning info:
warning: passing argument 1 of ‘memcpy’ discards ‘const’
qualifier from pointer target type

Variable dev_addr is done const intentionally in v5.17 to prevent using
it directly.  See the following Linux kernel changeset for details:

commit adeef3e32146 ("net: constify netdev->dev_addr")

Used helper function was introduced earlier in v5.15.

Fixes: ea6b39b5b847 ("kni: remove ethtool support")

Signed-off-by: Ke Zhang <ke1x.zhang at intel.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
Acked-by: Ferruh Yigit <ferruh.yigit at xilinx.com>
---
 kernel/linux/kni/compat.h   | 4 ++++
 kernel/linux/kni/kni_misc.c | 9 +++++++--
 kernel/linux/kni/kni_net.c  | 4 ++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
index 0db29a4a6f..3a86d12bbc 100644
--- a/kernel/linux/kni/compat.h
+++ b/kernel/linux/kni/compat.h
@@ -142,6 +142,10 @@
 #define HAVE_TSK_IN_GUP
 #endif
 
+#if KERNEL_VERSION(5, 15, 0) <= LINUX_VERSION_CODE
+#define HAVE_ETH_HW_ADDR_SET
+#endif
+
 #if KERNEL_VERSION(5, 18, 0) > LINUX_VERSION_CODE
 #define HAVE_NETIF_RX_NI
 #endif
diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c
index a6b51fc32f..0df129240b 100644
--- a/kernel/linux/kni/kni_misc.c
+++ b/kernel/linux/kni/kni_misc.c
@@ -404,11 +404,16 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	pr_debug("mbuf_size:    %u\n", kni->mbuf_size);
 
 	/* if user has provided a valid mac address */
-	if (is_valid_ether_addr(dev_info.mac_addr))
+	if (is_valid_ether_addr(dev_info.mac_addr)) {
+#ifdef HAVE_ETH_HW_ADDR_SET
+		eth_hw_addr_set(net_dev, dev_info.mac_addr);
+#else
 		memcpy(net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
-	else
+#endif
+	} else {
 		/* Assign random MAC address. */
 		eth_hw_addr_random(net_dev);
+	}
 
 	if (dev_info.mtu)
 		net_dev->mtu = dev_info.mtu;
diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c
index a8b092b756..09f690bf81 100644
--- a/kernel/linux/kni/kni_net.c
+++ b/kernel/linux/kni/kni_net.c
@@ -783,7 +783,11 @@ kni_net_set_mac(struct net_device *netdev, void *p)
 		return -EADDRNOTAVAIL;
 
 	memcpy(req.mac_addr, addr->sa_data, netdev->addr_len);
+#ifdef HAVE_ETH_HW_ADDR_SET
+	eth_hw_addr_set(netdev, addr->sa_data);
+#else
 	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+#endif
 
 	ret = kni_net_process_request(netdev, &req);
 
-- 
2.35.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-06-21 15:37:54.148981770 +0800
+++ 0111-kni-use-dedicated-function-to-set-MAC-address.patch	2022-06-21 15:37:49.234451950 +0800
@@ -1 +1 @@
-From b99bd4a0aacab47165d045a6aeee88ee74744600 Mon Sep 17 00:00:00 2001
+From 3590f93137200914516a66452535016088b0cb5f Mon Sep 17 00:00:00 2001
@@ -7,0 +8,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit b99bd4a0aacab47165d045a6aeee88ee74744600 ]
@@ -21 +23,0 @@
-Cc: stable at dpdk.org
@@ -48 +50 @@
-index 4f6dd373a3..0c3a86ee35 100644
+index a6b51fc32f..0df129240b 100644
@@ -51 +53 @@
-@@ -402,11 +402,16 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
+@@ -404,11 +404,16 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
@@ -71 +73 @@
-index 41805fcabf..779ee3451a 100644
+index a8b092b756..09f690bf81 100644