27 Feb
2018
27 Feb
'18
1:30 p.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/libosmocore/commit/?id=fc05404aeb9edb9a6b4b29fcc743…
commit fc05404aeb9edb9a6b4b29fcc743d5d395b8be55
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 15:14:14 2018 +0100
introduce GSM_MCC_MNC_INVALID
In some cases, we want to mark an unset MCC-MNC. Define uint16-max for this
purpose.
osmo-bsc code is already doing so with a -1 and using int data types, which
will become inconvenient with the new API that handles MCC and MNC as uint16_t.
Change-Id: Ieee7add0bd6d94cf84743a49794bbcd38561b72f
http://cgit.osmocom.org/libosmocore/commit/?id=c64b2c2d196913fde2ae97d748a4…
commit c64b2c2d196913fde2ae97d748a4276c2c265807
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 21:38:00 2018 +0100
gsm: add osmo_mnc_from_str(), osmo_mnc_cmp(), osmo_plmn_cmp() for 3-digit MNC
osmo_mnc_from_str() preserves leading zeros in the string and is useful for
VTY config parsing (osmo-bsc, osmo-msc, osmo-sgsn, osmo-pcu).
osmo_{plmn,mnc}_cmp() takes care of the slight intricacy of ignoring the 3-digit flag
if the MNC is anyway >99. Will be used by osmo-sgsn.git and osmo-bsc.git. (All
current users just care about identical MNC, but a proper cmp doesn't hurt.)
Change-Id: Ib7176b1d65a03b76f41f94bc9d3293a8a07d24c6
http://cgit.osmocom.org/libosmocore/commit/?id=064148308ca41b986613c4764d80…
commit 064148308ca41b986613c4764d8032fa5e4fa020
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 22:20:42 2018 +0100
gsm0408_test: add test cases for MNC with leading zeros
Change-Id: I9b387e09293a6bbef84b9620ccf21ee2f9ec751c
http://cgit.osmocom.org/libosmocore/commit/?id=9372368c5b92ca3956cc8370b573…
commit 9372368c5b92ca3956cc8370b5730db50aa678d5
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 22:19:56 2018 +0100
gsm0408_test: test new gsm48_{decode,generate}_lai2() functions
Change-Id: I4c8492b8055803d2857f1ef30aede088778b085b
http://cgit.osmocom.org/libosmocore/commit/?id=11d9c3a3cb0286f2980a17d05642…
commit 11d9c3a3cb0286f2980a17d05642b9d5db95fb4e
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 15:12:23 2018 +0100
gsm0408_test: check for new mnc_3_digits flag
Note that on the input side, the 3-digits flag may be left false when the MNC
is >99 anyway. On the decoded side, the flag is set accurately.
Change-Id: I89765613d8c5bd939a6957f7443ac88475f1b93c
http://cgit.osmocom.org/libosmocore/commit/?id=ed6255ecdddd46e087a700cb3d46…
commit ed6255ecdddd46e087a700cb3d46948c19822773
Author: Neels Hofmeyr <neels(a)hofmeyr.de>
Date: Tue Feb 20 13:47:08 2018 +0100
implement support for 3-digit MNC with leading zeros
Enable representing three-digit MNC with leading zeros. The MNCs 23 and 023 are
actually different; so far we treated both as 23. Re-encode an incoming BCD or
string of 023 as it were, i.e. not dropping the leading zero as 23.
Break ABI compatibility by changing the size and ordering of structs
gprs_ra_id, osmo_plmn_id, osmo_cell_global_id, ... by adding an mnc_3_digits
flag.
Change ordering in gprs_ra_id because the canonical oder is {Mobile Country
Code, Mobile Network Code}, so have the mcc member first.
ABI compatibility cannot be maintained for struct gprs_ra_id, since it is a
direct member of structs bssgp_bvc_ctx and bssgp_paging_info, and even just
adding a flag to the end would cause ABI changes of those structs. Similarly,
osmo_plmn_id is a direct member of osmo_location_area_id, and so forth.
Add new API to set and read this additional flag to preserve leading zeros:
- osmo_plmn_to_bcd(), osmo_plmn_from_bcd() after
gsm48_mcc_mnc_to_bcd() and gsm48_mcc_mnc_from_bcd().
- osmo_decode_lai(), osmo_generate_lai() after
gsm48_decode_lai(), gsm48_generate_lai().
- gsm0808_create_layer3_2() after gsm0808_create_layer3() and
gsm0808_create_layer3_aoip().
- various osmo_*_name() functions in gsm23003.h (osmo_rai_name() still in
gsm48.h close to struct gprs_ra_id definition). The amount and duplication of
these may seem a bit overboard, but IMO they do make sense in this way.
Though most code will soon see patches unifying the data structures used, in
some cases (vty, ctrl) they are required singled out. Without these
functions, the formatting ("%0*u", mnc_3_digits ? 3 : 2, mnc) would be
duplicated all over our diverse repositories.
In various log output, include the leading MNC zeros.
Mark one TODO in card_fs_sim.c, I am not sure how to communicate a leading zero
to/from a SIM card FS. The focus here is on the core network / BSS.
To indicate ABI incompatibility, bump libosmogsm and libosmogb LIBVERSIONs;
adjust debian files accordingly.
Implementation choices:
- The default behavior upon zero-initialization will be the mnc_3_digits flag
set to false, which yields exactly the previous behavior.
- I decided against packing the mnc with the mnc_3_digits field into a
sub-struct because it would immediately break all builds of dependent
projects: it would require immediate merging of numerous patches in other
repositories, and it would make compiling older code against a newer
libosmocore unneccessarily hard.
Change-Id: Id2240f7f518494c9df6c8bda52c0d5092f90f221
-----------------------------------------------------------------------
Summary of changes:
include/osmocom/gsm/gsm23003.h | 14 +++
include/osmocom/gsm/gsm48.h | 16 +--
src/gsm/gsm23003.c | 204 +++++++++++++++++++++++++++++++++++++
src/gsm/gsm48.c | 226 +++--------------------------------------
4 files changed, 232 insertions(+), 228 deletions(-)
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An utility library for Open Source Mobile Communications