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| author | Andrew Lunn <andrew@lunn.ch> | 2010-01-02 11:30:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-03 16:42:36 -0800 |
| commit | a9c2910aa15c5b2559e80d1406176f8456d3e34e (patch) | |
| tree | 7bede70aef90823d6f7cf0a1947c7a55b868e86b /drivers/staging/batman-adv/soft-interface.c | |
| parent | e70171957a3ac67fd62af0c66efe7b7749121899 (diff) | |
| download | op-kernel-dev-a9c2910aa15c5b2559e80d1406176f8456d3e34e.zip op-kernel-dev-a9c2910aa15c5b2559e80d1406176f8456d3e34e.tar.gz | |
Staging: batman-adv: Allow the MAC address to be set
Some embedded devices have very limited sources of entropy for the
random number generator. It has been observed that the random MAC
address on the interface bat0 is not always random. When testing with
a collection of identical hardware, sometimes the bat0 device the same
MAC address on multiple devices, causing mayhem. This patch allows the
MAC address to be set by the user.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/batman-adv/soft-interface.c')
| -rw-r--r-- | drivers/staging/batman-adv/soft-interface.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c index 8ae3483..bc0217b 100644 --- a/drivers/staging/batman-adv/soft-interface.c +++ b/drivers/staging/batman-adv/soft-interface.c @@ -145,9 +145,18 @@ struct net_device_stats *interface_stats(struct net_device *dev) return &priv->stats; } -int interface_set_mac_addr(struct net_device *dev, void *addr) +int interface_set_mac_addr(struct net_device *dev, void *p) { - return -EBUSY; + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + hna_local_remove(dev->dev_addr, "mac address changed"); + memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); + hna_local_add(dev->dev_addr); + + return 0; } int interface_change_mtu(struct net_device *dev, int new_mtu) |
