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This error message is now contained in a loop, and the current iteration
does not know whether paging will fail entirely or if later iterations
will succeed. Update the error message accordingly.
This also makes the error message consistent with the one in page_cgi().
Change-Id: I8ec229702343343dedcbb242b6d0ed170c858511
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We can now either page an invidual BTS directly or page several BTS in a
given location area. This decision is taken based on the contents of the
cell identifier list in the paging request. Select a set of BTS for paging
while processing the cell identifier list, rather than requiring the
paging layer to loop over all BTS in the MSC.
This change requires some adjustment in bssap_test. In particular,
this test must now add a BTS to its network in order to pass.
The purpose of this change is to make the layering a bit cleaner.
There is one functional change: We no longer abort paging if paging fails
for a particular BTS. Instead, we keep trying to page on other BTS.
Change-Id: Ic1c72c7f83e53988eb9fedf314b1dc459836833d
Suggested-by: Harald Welte
Depends: Ic7772e75c3d7fb0df6e17e118bb33b3248352d4d
Related: OS#2753
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Also, parse the complete cell identifier list for both LAC and LAI.
Change-Id: Ic3c62ff0fccea586794ea4b3c275a0685cc9326e
Related: OS#2751
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There still is a lot of dead code that we inherited from the NITB
days, let's remove more of it.
libtrau will be re-introduced as part of osmo-mgw later.
Change-Id: I8e0af56a158f25a4f1384d667c03eb20e72df5b8
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After the bssap test in Ie934c5d229140a89763bf2efff86d6a3766cd351, the
subsequent commit Ia2882b7ca31a3219c676986e85045fa08a425d7a was not tested
against the latest head, and its breaking bssap_test was not caught.
Fix current master of osmo-bsc's 'make check' target: add osmo_bsc_mgcp.c and
libosmo-mgcp-client dependencies to bssap_test linkage.
Change-Id: I28719d267452f66d65581c43433e24a9f46cf7dc
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3GPP TS ยง 08.08 defines various types of Cell Identifier List IEs, but we only
implement "entire BSS" and "one LAC". If the MSC sends a Cell Identifier List
that we don't implement, it is best for interoperability to page the entire BSS
and post a log message instead of rejecting the paging altogether. Apart from
resource management, it is not harmful to page more than the MSC requested; if
use of resources becomes an issue, the log message will guide towards the
solution of providing an actually implemented Cell Identifier List IE.
Upon IE length that is other than we expect, log the error, but also fall back
to paging the entire BSS. Overall message length correctness has been checked
earlier.
The particular case observed is that a Huwaei MSC sends a LAI for Cell
Identifier List (MCC+MNC in bcd, followed by a LAC), parsing of which we may
want to add later.
Improve logging: identify the subscriber that is being paged.
Coding style: use a switch() statement to clarify flow and provide a place to
add more implementations later.
Add regression test bssap_test.c: fabricates BSSAP Paging messages with the two
implemented Cell Identifier List IEs as well as the unimplemented LAI
identifier, verify the resulting paging LAC in wrapped function and stderr.
Change-Id: Ie934c5d229140a89763bf2efff86d6a3766cd351
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