calling send_delete_all_flows function in the core (for all
applications) is a bad idea since some applications don't want such
(e.g. failover).
send_delete_all_flows function doesn't work for OF1.2. nxm
code needs the specific code for each OF version. I really don't want
to do so.
So let's not call this function in the core. At this point, it's
impossible to write applications that can work with any OF versions
(incluing nxm). Let applications do whatever they want.
We should remove OF protocol version dependent functions
(send_delete_all_flows, send_flow_mod, and send_flow_del). Also trying
to enable NXM blindly is very bad for buggy hardware switches. But
they are not called in the core code so I leave them alone for now.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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