openbsc.git branch neels/gtphub updated. 0.15.0-37-g9cfe037

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http://cgit.osmocom.org/openbsc/commit/?id=9cfe037559bccf5b4652bd449e2b2f1694b8e5f5

commit 9cfe037559bccf5b4652bd449e2b2f1694b8e5f5
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Nov 16 14:52:05 2015 +0100

    gtphub: cosmetic: break long lines.
    
    Fit most of the code in 80 chars width. Some instances still leak past 80
    characters because of long function names, inline comments or the like, "the
    exception proves the rule."
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=063a802d468442fdd7d46e6d7c51e9e8327fb791

commit 063a802d468442fdd7d46e6d7c51e9e8327fb791
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Nov 16 14:35:13 2015 +0100

    gtphub: review log levels, add level arg to LOG().
    
    For maintenance, it is convenient to have the log level explicit at each
    log statement.
    
    Tweak some log levels / message formatting while at it.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=390e9101253331b58297a3526ea2fed0982815c8

commit 390e9101253331b58297a3526ea2fed0982815c8
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Nov 16 13:45:13 2015 +0100

    gtphub: add logging labels to bind struct.
    
    Allow logging the plane (Ctrl/User) and side (SGSN/GGSN) in functions that only
    have a gtphub_bind* to work with, by adding a constant label to each bind.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=a208c734a20a525a897b7a7184361da61604208e

commit a208c734a20a525a897b7a7184361da61604208e
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Wed Nov 11 19:26:09 2015 +0100

    gtphub: don't always try to do GGSN resolution.
    
    If a GGSN is already known from unmapping, don't invoke a host resolution.
    In a live working environment, it wouldn't hurt, because the lookups would
    mostly return from the cache. But in a testing environment without a name
    server, it barfs on every packet.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=16c3f57ed63c65043561c6bb4cec2430d0537aff

commit 16c3f57ed63c65043561c6bb4cec2430d0537aff
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Wed Nov 11 17:27:01 2015 +0100

    gtphub: fix numerous segfaults, and other stupidities.
    
    Initialize llist_heads to empty (2 were missing). Move those for struct gtphub
    instances to gtphub_zero() (one moved, one added).
    
    In from_[gs]gsns_read_cb(), use a return type that can actually reflect
    negative return values.
    
    resolved_addr.buf: no need to take the address of a byte array var
    (cosmetic).
    
    Pass the proper user data address to sgsn_ares_query(), not the address of
    the pointer holding the user data address.
    
    Initialize ggsn_lookup->expiry_entry (was missing). Publish the function for that
    in gtphub.h so gtphub_ext.c can use it.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=3317c84c163a567e0d9405df6d4945689dac1f2c

commit 3317c84c163a567e0d9405df6d4945689dac1f2c
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Wed Nov 11 17:20:42 2015 +0100

    gtphub: Add logging for ares queries.
    
    Looking for a segfault, I added a lot of logging. This may be useful for
    live testing ares, leaving it in there for now.
    
    Note: I still want to clean up the logging concerning log levels etc. once
    we're out of alpha.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=c83cd898ef3c167c370d0c3240f355f192388ec7

commit c83cd898ef3c167c370d0c3240f355f192388ec7
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Wed Nov 11 14:01:06 2015 +0100

    gtphub: fix handling of sender from nonstandard port.
    
    Allow a peer sending from an unknown port but a known address, and just
    create the port (and unmap the seq nr back to this port later to return
    the response to the sender).
    
    Only an SGSN on the Ctrl plane is allowed to make the very first contact
    from an unknown address.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=e921e32c828e4c4a62fa3edc17bf49abf8e6d8d7

commit e921e32c828e4c4a62fa3edc17bf49abf8e6d8d7
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Wed Nov 11 00:45:50 2015 +0100

    gtphub: fix User plane decoding, add unit test.
    
    Split decoding return code GTP_RC_PDU in GTP_RC_PDU_C and GTP_RC_PDU_U.
    Don't do IEs in GTP_RC_PDU_U.
    
    Add a unit test for User plane data, expected to fail (nonstandard port case).
    
    In gtphub_test.c, tweak logging so that it is easily visible which test
    produced which output. Also add the global resolved_sgsn_addr and ggsn_sender,
    symmetrically to resolved_ggsn_add and sgsn_sender.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=c227594394ddd00e11b8e57cfd16182338cef131

commit c227594394ddd00e11b8e57cfd16182338cef131
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Tue Nov 10 22:07:04 2015 +0100

    gtphub: make test code reusable for future tests.
    
    Generalize to make the PDP ctx message definitions and "sending" of messages
    from SGSN->gtphub->GGSN and back reusable in future tests.
    
    Publish gsn_addr_from_sockaddr() in gtphub.h for use in gtphub_test.c.
    
    Use an osmo_sockaddr for resolved_ggsn_addr, because one is needed for
    comparison in probably every future test.
    
    Add LVL2_ASSERT() to print assertion message and return instead of abort,
    so that functions can be called from several tests without losing the
    info of which test caused it from which line.
    
    Use globals for struct gtphub and time_t now, to reduce nr of args that need to
    be passed around when writing tests. Add a default test setup function.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=5b664f4b9b95f3f8be3741794fceb309a345bb00

commit 5b664f4b9b95f3f8be3741794fceb309a345bb00
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Tue Nov 10 20:32:13 2015 +0100

    gtphub: add/fix IMSI and APN IE error handling
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=bb3d6785e1a32a651bdb9b32707245e1c126c536

commit bb3d6785e1a32a651bdb9b32707245e1c126c536
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Nov 9 15:12:25 2015 +0100

    gtphub: fix Echo behavior: respond directly.
    
    Up to now I used the Echo as a test for sequence nr mappings. But Echos
    should be handled differently: they are scoped on the link and an Echo
    response should be sent right back to the requester.
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=30f7bcbd79ad1b661dff844a43f0ccbf4f07cebf

commit 30f7bcbd79ad1b661dff844a43f0ccbf4f07cebf
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Sun Nov 8 20:34:47 2015 +0100

    gtphub: add first bits of GRX ares
    
    For the resolving function, change the function signature to return a
    gtphub_peer_port. In consequence, publish two functions concerned with
    gtphub_peer_port instances for use in test and gtphub_ext.c.
    
    Add GGSN resolution queue, callback and cache. Simple implementation: if an
    SGSN asks for a GGSN, it will first get no answer, and I hope it will ask again
    once the GGSN is in the cache.
    
    Within gtphub_ext.c, have a dummy sgsn struct, as the sgsn_ares code currently
    depends on it (half the functions pass an sgsn instance pointer around, but the
    other half use the global one).
    
    In the unit tests, wrap away the ares initialization so that they can work
    without a DNS server around. The netcat test breaks because of this, will
    remove it.
    
    Using sgsn_ares, implement the gtphub_resolve_ggsn_addr() function, I hope:
    untested.
    
    Minor cosmetics just to see if you're paying attention... ;)
    
    Sponsored-by: On-Waves ehi

http://cgit.osmocom.org/openbsc/commit/?id=c8a614d2e9c56fe13c22f239be82f2a2c958e039

commit c8a614d2e9c56fe13c22f239be82f2a2c958e039
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Thu Sep 24 17:32:30 2015 +0200

    Add GTP hub initial code base.
    
    First steps towards a new GTP hub. The aim is to mux GTP connections, so that
    multiple SGSN <--> GGSN links can pass through a single point. Background:
    allow having more than one SGSN, possibly in various remote locations.
    
    The recent addition of OAP to GSUP is related to the same background idea.
    
    (This is a collapsed patch of various changes that do not make sense to review
    in chronological order anymore, since a lot of it has thorougly transmorphed
    after it was first committed.)
    
    Sponsored-by: On-Waves ehf

-----------------------------------------------------------------------

Summary of changes:
 openbsc/include/openbsc/gtphub.h   |  16 +-
 openbsc/src/gprs/Makefile.am       |   2 +-
 openbsc/src/gprs/gtphub.c          | 382 ++++++++++++++++++++-----------------
 openbsc/src/gprs/gtphub_ext.c      |  35 ++--
 openbsc/tests/gtphub/gtphub_test.c | 155 ++++++++-------
 5 files changed, 325 insertions(+), 265 deletions(-)


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