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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/usb/gadget/function/u_ether.c
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@@ -879,7 +879,7 @@ int gether_register_netdev(struct net_device *net)
sa.sa_family = net->type;
memcpy(sa.sa_data, dev->dev_mac, ETH_ALEN);
rtnl_lock();
status = dev_set_mac_address(net, &sa);
status = dev_set_mac_address(net, &sa, NULL);
rtnl_unlock();
if (status)
pr_warn("cannot set self ethernet address: %d\n", status);