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net: introduce new priv_flag indicating iface capable of change mac when running

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Introduce IFF_LIVE_ADDR_CHANGE priv_flag and use it to disable
netif_running() check in eth_mac_addr()

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2012-06-29 05:10:05 +00:00 committed by David S. Miller
parent 03292745b0
commit bb35f67195
2 changed files with 3 additions and 1 deletions
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2
include/linux/if.h
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@ -81,6 +81,8 @@
#define IFF_UNICAST_FLT 0x20000 /* Supports unicast filtering */
#define IFF_TEAM_PORT 0x40000 /* device used as team port */
#define IFF_SUPP_NOFCS 0x80000 /* device supports sending custom FCS */
#define IFF_LIVE_ADDR_CHANGE 0x100000 /* device supports hardware address
* change when it's running */
#define IF_GET_IFACE 0x0001 /* for querying only */

2
net/ethernet/eth.c
View file

@ -283,7 +283,7 @@ int eth_mac_addr(struct net_device *dev, void *p)
{
struct sockaddr *addr = p;
if (netif_running(dev))
if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev))
return -EBUSY;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;