From: Vlad Yasevich vyasevich@gmail.com
[ Upstream commit e26f43faa0d79dd06e9e94829696b68b9940c2ee ]
The user currently gets an EBUSY error when attempting to set the mac address on a macvlan device to the same value.
This should really be a no-op as nothing changes. Catch the condition and return early.
Signed-off-by: Vladislav Yasevich vyasevic@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/net/macvlan.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 9897cabec371..c0d143df4c79 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -693,6 +693,10 @@ static int macvlan_set_mac_address(struct net_device *dev, void *p) if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL;
+ /* If the addresses are the same, this is a no-op */ + if (ether_addr_equal(dev->dev_addr, addr->sa_data)) + return 0; + if (vlan->mode == MACVLAN_MODE_PASSTHRU) { dev_set_mac_address(vlan->lowerdev, addr); return 0;