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net: dev: Add extack argument to dev_set_mac_address()

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A follow-up patch will add a notifier type NETDEV_PRE_CHANGEADDR, which
allows vetoing of MAC address changes. One prominent path to that
notification is through dev_set_mac_address(). Therefore give this
function an extack argument, so that it can be packed together with the
notification. Thus a textual reason for rejection (or a warning) can be
communicated back to the user.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
2018-12-13 11:54:30 +00:00
committed by David S. Miller
parent 95302c394c
commit 3a37a9636c
13 changed files with 29 additions and 24 deletions
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2
drivers/net/tap.c
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@@ -1113,7 +1113,7 @@ static long tap_ioctl(struct file *file, unsigned int cmd,
rtnl_unlock();
return -ENOLINK;
}
ret = dev_set_mac_address(tap->dev, &sa);
ret = dev_set_mac_address(tap->dev, &sa, NULL);
tap_put_tap_dev(tap);
rtnl_unlock();
return ret;