On Wed, Nov 30, 2016 at 1:46 PM, Yisu Peng <yisupeng@xxxxxxxxx> wrote:
So, how is the kernel check those staled arp entries? Or, what is the mechanism that the kernel uses to find the out of date entries?
ok sure, well, each neighbor entry (struct neighbour) has a 'timer' (which is created during neighbor creation i.e. during neigh_alloc(...)). this timer gets 'serviced' by 'neigh_timer_handler(...)', which is the per neighbor garbage collector handler.
when the state of the neighbor becomes NUD_FAILED, the neighbor is collected via invokation of 'neigh_release(...)' as indicated earlier.
--
kind regards
anupam
In the beginning was the lambda, and the lambda was with Emacs, and Emacs was the lambda.
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