net: feed /dev/random with the MAC address when registering a device
Cc: David Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@vger.kernel.org
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@ -1172,6 +1172,7 @@ static int __dev_open(struct net_device *dev)
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net_dmaengine_get();
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dev_set_rx_mode(dev);
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dev_activate(dev);
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add_device_randomness(dev->dev_addr, dev->addr_len);
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}
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return ret;
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@ -4763,6 +4764,7 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
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err = ops->ndo_set_mac_address(dev, sa);
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if (!err)
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call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
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add_device_randomness(dev->dev_addr, dev->addr_len);
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return err;
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}
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EXPORT_SYMBOL(dev_set_mac_address);
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@ -5541,6 +5543,7 @@ int register_netdevice(struct net_device *dev)
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dev_init_scheduler(dev);
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dev_hold(dev);
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list_netdevice(dev);
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add_device_randomness(dev->dev_addr, dev->addr_len);
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/* Notify protocols, that a new device appeared. */
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ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);
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@ -1378,6 +1378,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
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goto errout;
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send_addr_notify = 1;
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modified = 1;
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add_device_randomness(dev->dev_addr, dev->addr_len);
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}
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if (tb[IFLA_MTU]) {
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