From: Cong Wang <redacted>
Date: Mon, 23 Jun 2014 15:09:30 -0700

From: Cong Wang <redacted>

Different net namespaces have different devices, routes, neighbours,
so their neigh table should be separated as well. This patch makes
gloable arp_tbl and nd_tbl etc. be per netns.

Also, as we don't support multiple tables per family, there is no
point to make tables chained by linked list, they can just be
statically compiled. This will eliminate the global neigh_tbl_lock.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <redacted>
Cc: stephen hemminger <stephen@networkplumber.org>
Signed-off-by: Cong Wang <redacted>
Signed-off-by: Cong Wang <redacted>

Eric and any other networking namespace experts, please review this.

Thanks.