netlink: add a start callback for starting a netlink dump

The start callback allows the caller to set up a context for the
dump callbacks. Presumably, the context can then be destroyed in
the done callback.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2015-12-15 15:41:37 -08:00 • committed by David S. Miller
commit fc9e50f5a5
4 changed files with 24 additions and 0 deletions