[PATCH v4 1/2] kni: use dedicated function to set random MAC address

[Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>]

From: Ke Zhang <ke1x.zhang@intel.com>

eth_hw_addr_random() sets address type correctly.

eth_hw_addr_random() is available since Linux v3.4, so
no compat is required.

Also fix the warning:
warning: passing argument 1 of ‘memcpy’ discards ‘const’
qualifier from pointer target type

Variable dev_addr is done const intentionally in Linux v5.17 to
prevent using it directly.

Fixes: ea6b39b5b847 ("kni: remove ethtool support")
Cc: stable@dpdk.org

Signed-off-by: Ke Zhang <ke1x.zhang@intel.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
---
 kernel/linux/kni/kni_misc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c
index 780187d8bf..4f6dd373a3 100644
--- a/kernel/linux/kni/kni_misc.c
+++ b/kernel/linux/kni/kni_misc.c
@@ -405,8 +405,8 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	if (is_valid_ether_addr(dev_info.mac_addr))
 		memcpy(net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
 	else
-		/* Generate random MAC address. */
-		eth_random_addr(net_dev->dev_addr);
+		/* Assign random MAC address. */
+		eth_hw_addr_random(net_dev);
 
 	if (dev_info.mtu)
 		net_dev->mtu = dev_info.mtu;
-- 
2.30.2