Thread (72 messages) flat view 72 messages, 16 authors, 2012-02-11

Re: [PATCH 40/50] batman-adv: use dev_hw_addr_random() instead of random_ether_addr()

From: Sven Eckelmann <hidden>
Date: 2012-02-09 08:52:45
Also in: batman, lkml

On Wednesday 08 February 2012 22:10:47 Danny Kukawka wrote:
quoted hunk ↗ jump to hunk
Use dev_hw_addr_random() instead of calling random_ether_addr()
to set addr_assign_type correctly to NET_ADDR_RANDOM.

Reset the state to NET_ADDR_PERM as soon as the MAC get
changed via .ndo_set_mac_address.

Signed-off-by: Danny Kukawka <redacted>
---
 net/batman-adv/soft-interface.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/soft-interface.c
b/net/batman-adv/soft-interface.c index 987c75a..865a485 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -541,6 +541,9 @@ static int interface_set_mac_addr(struct net_device
*dev, void *p) }

 	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+	if (dev->addr_assign_type & NET_ADDR_RANDOM)
+		dev->addr_assign_type ^= NET_ADDR_RANDOM;
+
 	return 0;
 }
Why not something like

dev->addr_assign_type &= ~NET_ADDR_RANDOM;

? It is a relative common way inside the kernel to do this kind of stuff.

Thanks,
	Sven

PS: For the batman-adv people. This functionality was introduced with 2.6.36. 

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