Changes

sccp: Allow marking UNIT-DATA.req Sequence Control param non-presence, set SLS

The public API for SCCP UNIT-DATA.req was missing a way to state whether
the "Sequence Control" Parameter was present or not in the primitive.

This was originated most probably by the fact that the field is always
present for SUA CLDT message generated and sent over the wire.

Still, the presence of such field during UNIT-DATA.req actually
indicates the Protocol Class to be used/set on the message.
Hence, it is important to provide it.

Once the Protocol Class to transmit the message is known, we can then
generate a proper SLS.

Change-Id: I834e91c1ec337713b0e684cf4fd7de854150bef6

AS loadsharing: Log routing lookup logic

Loggin very similar to what we already have for ASP loadsharing in
ss7_as_select_asp_loadshare().

Change-Id: I6b4983bc2cc8bd231a5d85f378be8c93c6f4fa27

sccp_scrc: Improve logging of route lookup failure

Change-Id: I54a59f8b95451b473204d625acdc22dcfc94b631

ASP loadsharing: Normal ASP distribution regardless of active state

Before this patch, the normal ASP for a given loadshare eSLS entry (seed)
would only be filled in with active ASPs.
That means that if eg. N ASPs are configured but only 1 is successfully
activated upon startup and a lot of traffic happens, the full eSLS will
be filled with that ASP, and as a result all traffic will be sent to
that ASP, with the exception during the time that ASP is inactive.

Instead, we want to populate the eSLS table with Normal ASP field
properly distributed over all ASPs. If a given ASP is not active at that
time, then simply pick an Alternative ASP during that time.

Change-Id: I2064fe89bac2d3bd86fee544a64ab21417e1c368

AS loadsharing: Normal route distribution regardless of active state

Before this patch, the normal route for a given loadshare eSLS entry (seed)
would only be filled in with available routes.
That means that if eg. N routes are configured but only 1 is really
available upon startup and a lot of traffic happens, the full eSLS will
be filled with that route, and as a result all traffic on that combined
linkset will be sent through that route.

Instead, we want to populate the eSLS table with Normal Route field
properly distributed over all routes. If a given route is not active at
that time, then simply pick an Alternative Route during that time.

Change-Id: I6daf114416c69c84bdc3042efcaf2918f91c2e87

route: osmo_ss7_route_name(): Use osmo_ss7_pointcode_print_buf()

This allows callers to call osmo_ss7_route_name() together with
osmo_ss7_pointcode_print() and osmo_ss7_pointcode_print2() in the same
LOG line.

Change-Id: Iccbd83eeaa0e1c2a6078ece8d5c6d7af6fd9d71a

vty: Add cmd 'show cs7 instance <0-15> as name AS_NAME'

As also available in Cisco ITP.

Change-Id: I76be29aeacb60201ecb5bab2203f02e3cdfc0943