tree 70ec869e4843a8330df1133ee617b1a7d740bd21
parent d4b79c877291e58bf7fafcfd3c771c9e66fa3f5b
author Neels Hofmeyr <neels@hofmeyr.de> 1549834107 +0100
committer Neels Hofmeyr <neels@hofmeyr.de> 1552019107 +0100

add gsm0808_cell_id_from_cgi(), gsm0808_cell_id_to_cgi()

CGI to Cell ID: for example, for Paging, osmo-msc has a CGI for a subscriber
and needs to send out a Cell Identifier IE. Makes sense to add this conversion
here.

Cell ID to CGI: for a Layer 3 Complete, a subscriber sends the current cell in
the form of a Cell Identifier, which we store as a CGI, if necessary enriched
with the local PLMN.

Add enum with bitmask values to identify parts of a CGI, for the return value
of gsm0808_cell_id_to_cgi(). Can't use enum CELL_IDENT for that, because it
doesn't have a value for just a PLMN (and is not a bitmask).

Change-Id: Ib9af67b100c4583342a2103669732dab2e577b04