Re: [Bonding-devel] [PATCH 1/3] net: introduce a list of device addresses dev_addr_list (v4)

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On Sat, 18 Apr 2009 10:58:49 +0200
Jiri Pirko <jpirko@xxxxxxxxxx> wrote:

> v3 -> v4 (current):
> -changed kzalloc to kmalloc in __hw_addr_add_ii()
> -ASSERT_RTNL() avoided in dev_addr_flush() and dev_addr_init()
> 
> v2 -> v3:
> -removed unnecessary rcu read locking
> -moved dev_addr_flush() calling to ensure no null dereference of dev_addr
> 
> v1 -> v2:
> -added forgotten ASSERT_RTNL to dev_addr_init and dev_addr_flush
> -removed unnecessary rcu_read locking in dev_addr_init
> -use compare_ether_addr_64bits instead of compare_ether_addr
> -use L1_CACHE_BYTES as size for allocating struct netdev_hw_addr
> -use call_rcu instead of rcu_synchronize
> -moved is_etherdev_addr into __KERNEL__ ifdef
> 
> This patch introduces a new list in struct net_device and brings a set of
> functions to handle the work with device address list. The list is a replacement
> for the original dev_addr field and because in some situations there is need to
> carry several device addresses with the net device. To be backward compatible,
> dev_addr is made to point to the first member of the list so original drivers
> sees no difference.
> 
> Signed-off-by: Jiri Pirko <jpirko@xxxxxxxxxx>

I am still unsure why this added complexity to the network device model is needed.

How does this interact with neighbor table (ARP)?
Isn't this what macvlan already does.



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