tree c59d5adcf9bb226db6f602c5078106052524cfea
parent 390fd0b388e4f85549e5d60bdeb21364b344d9b9
author David S. Miller <davem@davemloft.net> 1310655200 -0700
committer David S. Miller <davem@davemloft.net> 1310655200 -0700

net: Embed hh_cache inside of struct neighbour.

Now that there is a one-to-one correspondance between neighbour
and hh_cache entries, we no longer need:

1) dynamic allocation
2) attachment to dst->hh
3) refcounting

Initialization of the hh_cache entry is indicated by hh_len
being non-zero, and such initialization is always done with
the neighbour's lock held as a writer.

Signed-off-by: David S. Miller <davem@davemloft.net>