Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

Pull random subsystem patches from Ted Ts'o:
 "This patch series contains a major revamp of how we collect entropy
  from interrupts for /dev/random and /dev/urandom.

  The goal is to addresses weaknesses discussed in the paper "Mining
  your Ps and Qs: Detection of Widespread Weak Keys in Network Devices",
  by Nadia Heninger, Zakir Durumeric, Eric Wustrow, J.  Alex Halderman,
  which will be published in the Proceedings of the 21st Usenix Security
  Symposium, August 2012.  (See https://factorable.net for more
  information and an extended version of the paper.)"

Fix up trivial conflicts due to nearby changes in
drivers/{mfd/ab3100-core.c, usb/gadget/omap_udc.c}

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (33 commits)
  random: mix in architectural randomness in extract_buf()
  dmi: Feed DMI table to /dev/random driver
  random: Add comment to random_initialize()
  random: final removal of IRQF_SAMPLE_RANDOM
  um: remove IRQF_SAMPLE_RANDOM which is now a no-op
  sparc/ldc: remove IRQF_SAMPLE_RANDOM which is now a no-op
  [ARM] pxa: remove IRQF_SAMPLE_RANDOM which is now a no-op
  board-palmz71: remove IRQF_SAMPLE_RANDOM which is now a no-op
  isp1301_omap: remove IRQF_SAMPLE_RANDOM which is now a no-op
  pxa25x_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op
  omap_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op
  goku_udc: remove IRQF_SAMPLE_RANDOM which was commented out
  uartlite: remove IRQF_SAMPLE_RANDOM which is now a no-op
  drivers: hv: remove IRQF_SAMPLE_RANDOM which is now a no-op
  xen-blkfront: remove IRQF_SAMPLE_RANDOM which is now a no-op
  n2_crypto: remove IRQF_SAMPLE_RANDOM which is now a no-op
  pda_power: remove IRQF_SAMPLE_RANDOM which is now a no-op
  i2c-pmcmsp: remove IRQF_SAMPLE_RANDOM which is now a no-op
  input/serio/hp_sdc.c: remove IRQF_SAMPLE_RANDOM which is now a no-op
  mfd: remove IRQF_SAMPLE_RANDOM which is now a no-op
  ...

1 files changed, 3 insertions, 0 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 0ebaea16632f..c8569f826b71 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1172,6 +1172,7 @@ static int __dev_open(struct net_device *dev)
                 net_dmaengine_get();
                 dev_set_rx_mode(dev);
                 dev_activate(dev);
+                add_device_randomness(dev->dev_addr, dev->addr_len);
         }
 
         return ret;
@@ -4801,6 +4802,7 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
         err = ops->ndo_set_mac_address(dev, sa);
         if (!err)
                 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+        add_device_randomness(dev->dev_addr, dev->addr_len);
         return err;
 }
 EXPORT_SYMBOL(dev_set_mac_address);
@@ -5579,6 +5581,7 @@ int register_netdevice(struct net_device *dev)
         dev_init_scheduler(dev);
         dev_hold(dev);
         list_netdevice(dev);
+        add_device_randomness(dev->dev_addr, dev->addr_len);
 
         /* Notify protocols, that a new device appeared. */
         ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);