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http://cgit.osmocom.org/openbsc/commit/?id=a16feb74a7c09919739015e989433cad1abe8064
commit a16feb74a7c09919739015e989433cad1abe8064
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date: Wed Sep 23 23:28:36 2015 +0200
Implement OAP for SGSN registration.
Needs a new ipaccess_proto_ext enum value IPAC_PROTO_EXT_OAP from libosmocore,
added in libosmocore.git:5eeb17a0178a72d291cb99f2391d8ea7e9b65dd4.
Implement the Osmocom Authentication Protocol, to allow an SGSN to register
with an IPA peer. The aim is to allow multiple SGSNs talking to a single MAP
proxy.
Have this API separation:
- ipa_client_conn provides a bare connection (unchanged).
- ipa_client provides general IPA connection verification using timeouts and an
IPA ping/pong.
- gprs_ipa_client muxes an ipa_client to the GSUP and OAP APIs.
While ipa_client_conn and ipa_client above are very general, gprs_ipa_client is
a specific use "with real data".
ipa_client has previously been gprs_gsup_client. Remove GSUP specifics, change
naming and log output to say "IPA" instead. (A previous commit has already
renamed the gprs_gsup_client files to make this commit easier to read.)
Add gprs_ipa_client to soak up the GSUP specifics from ipa_client (basically
just the protocol numbers). Also soak up gprs_subscr_init() and gsup_read_cb()
from gprs_subscriber.c. And, of course, apply the OAP API.
Add gprs_oap_messages.{h,c} and gprs_oap.{h,c} to implement the OAP protocol.
Add a gprs_oap_state field to (new) gprs_gsup_client.
Add a gprs_oap_config field to sgsn_config.
Rename sgsn_config.gsup_server_* to ipa_server_*. Apply this in sgsn_vty.c.
Change from gprs_gsup_client to the new gprs_ipa_client API in
- gprs_subscriber.c
- sgsn_main.c (gprs_subscr_init() has become gprs_ipa_client_init())
Move some static functions to gprs_utils.h to avoid code duplication, I hope
the location is a sufficiently good choice:
- constant_time_cmp() from bsc_nat.c for gprs_oap_evaluate_challenge(), now
called gprs_constant_time_cmp().
- encode_big_endian() and decode_big_endian() from gprs_gsup_messages.c for
gprs_oap_decode() and gprs_oap_encode(), now called gprs_encode_big_endian()
and gps_decode_big_endian().
Apply the function renames in the mentioned .c files.
Add OAP unit tests to sgsn_test.c: test_oap() and test_sgsn_registration().
Update sgsn_test.ok accordingly.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/openbsc/commit/?id=438633a2d52e9f88b1571eebf0578bcc4ac39279
commit 438633a2d52e9f88b1571eebf0578bcc4ac39279
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date: Wed Sep 23 23:28:34 2015 +0200
ipa, gsup: file rename to prepare for refactoring
Rename gprs_gsup_client.* to ipa_client.*.
To ease diff reading for the upcoming commit, this commit performs a file
rename only.
Background: currently, GSUP is the only protocol spoken on the IPA wire. We
will now add OAP, a new protocol to register the SGSN with a MAP proxy. What
has been only the GSUP client will mostly become the general IPA client.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/openbsc/commit/?id=9b436c30b2d4c8ea9a703621486e6ad41bd4d5a9
commit 9b436c30b2d4c8ea9a703621486e6ad41bd4d5a9
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date: Wed Sep 23 23:28:27 2015 +0200
Add initial OAP protocol design document
Sponsored-by: On-Waves ehf
-----------------------------------------------------------------------
Summary of changes:
openbsc/include/openbsc/Makefile.am | 8 +-
openbsc/include/openbsc/gprs_ipa_client.h | 53 ++++
openbsc/include/openbsc/gprs_oap.h | 65 +++++
openbsc/include/openbsc/gprs_oap_messages.h | 70 ++++++
openbsc/include/openbsc/gprs_utils.h | 5 +
openbsc/include/openbsc/ipa_client.h | 43 ++--
openbsc/include/openbsc/sgsn.h | 13 +-
openbsc/src/gprs/Makefile.am | 6 +-
openbsc/src/gprs/gprs_gsup_messages.c | 44 +---
openbsc/src/gprs/gprs_ipa_client.c | 159 ++++++++++++
openbsc/src/gprs/gprs_oap.c | 207 ++++++++++++++++
openbsc/src/gprs/gprs_oap_messages.c | 179 ++++++++++++++
openbsc/src/gprs/gprs_subscriber.c | 43 +---
openbsc/src/gprs/gprs_utils.c | 39 +++
openbsc/src/gprs/ipa_client.c | 233 +++++++++---------
openbsc/src/gprs/sgsn_main.c | 5 +-
openbsc/src/gprs/sgsn_vty.c | 49 ++--
openbsc/src/osmo-bsc_nat/bsc_nat.c | 16 +-
openbsc/tests/sgsn/Makefile.am | 6 +-
openbsc/tests/sgsn/sgsn_test.c | 361 ++++++++++++++++++++++++++--
openbsc/tests/sgsn/sgsn_test.ok | 5 +
21 files changed, 1343 insertions(+), 266 deletions(-)
create mode 100644 openbsc/include/openbsc/gprs_ipa_client.h
create mode 100644 openbsc/include/openbsc/gprs_oap.h
create mode 100644 openbsc/include/openbsc/gprs_oap_messages.h
create mode 100644 openbsc/src/gprs/gprs_ipa_client.c
create mode 100644 openbsc/src/gprs/gprs_oap.c
create mode 100644 openbsc/src/gprs/gprs_oap_messages.c
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The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)