osmo-iuh.git branch neels/sigtran updated. 7c007fa3cf09515ff9ad1ffa84256f926d3aff71

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http://cgit.osmocom.org/osmo-iuh/commit/?id=7c007fa3cf09515ff9ad1ffa84256f926d3aff71

commit 7c007fa3cf09515ff9ad1ffa84256f926d3aff71
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 14:40:11 2017 +0200

    ranap msg headroom too small for SCCP
    
    Change-Id: I9a193846902a0477af0873f78283c4f2bedaf5dd

http://cgit.osmocom.org/osmo-iuh/commit/?id=b09a1b8458b3ac68629bbeb2eb7babe9d76d0bb8

commit b09a1b8458b3ac68629bbeb2eb7babe9d76d0bb8
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 14:29:04 2017 +0200

    cn unitdata: verify correct remote addr
    
    When receiving unitdata from the CN, verify that it is indeed coming from the
    remote address that matches our CS/PS domain settings.
    
    This patch came from an earlier stage where the is_ps out-parameter was
    actually used. While it currently isn't, it doesn't hurt to leave it there.
    
    Change-Id: I7190b4c3a05e8bac0eeffa1eab18c9e47429cb17

http://cgit.osmocom.org/osmo-iuh/commit/?id=5ede00c28c103ada35f35ef6443e85c007e7205f

commit 5ede00c28c103ada35f35ef6443e85c007e7205f
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 17:29:28 2017 +0200

    rua_to_scu(): add debug log for calling/called addr
    
    This might help in resolving whether we are conforming to SCCP specs regarding
    our calling/called address choices.
    
    Change-Id: Ie91953f7e9033419257d556d3a9f14e125f5c60d

http://cgit.osmocom.org/osmo-iuh/commit/?id=0cf4ea142b7374c70d0173b1b2a1cac577ebef91

commit 0cf4ea142b7374c70d0173b1b2a1cac577ebef91
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 14:34:38 2017 +0200

    rua_to_scu(), rua_rx_init_connect(): add debug logging
    
    In rua_to_scu(), log domain indicator and remote address.
    
    In rua_rx_init_connect(), add domain indicator to log.
    
    Change-Id: Ibe510bf0aca5eadbc0ce6031d3026e770de6559f

http://cgit.osmocom.org/osmo-iuh/commit/?id=83ce6bd71f93cf0c3a9f2f46998ede7b1c87ab9e

commit 83ce6bd71f93cf0c3a9f2f46998ede7b1c87ab9e
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Tue Jun 20 22:49:34 2017 +0200

    sccp_sap_up(): guard against NULL pointers
    
    Change-Id: Icd64b92b00461cace5c476c8bcf69eec3fdbbdd3

http://cgit.osmocom.org/osmo-iuh/commit/?id=7f5090c6e30ca6110bd8d817f3516d4edf8fc78d

commit 7f5090c6e30ca6110bd8d817f3516d4edf8fc78d
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 16:49:43 2017 +0200

    migrate osmo-hnbgw to libosmo-sigtran's SCCP/M3UA
    
    libosmo-sigtran now has a "proper" SCCP/M3UA stack, so we can make our hnb-gw
    3GPP compliant by switching from the old SUA code to the new universal SCCP
    user API with support for (currently) M3UA and SUA.
    
    Main changes:
    
    Use one cn_link to STP: We will connect to the core network using an (Osmo)STP
    instance that routes to MSC and SGSN, so we want one SCCP link instead of two.
    The only difference between IuCS and IuPS is a different remote osmo_sccp_addr.
    
    This has various effects through the messaging code; the patch is a bit larger
    than I would like, but it is hard to separate out truly independent smaller
    changes.
    
    CS or PS domain was previously flagged in the separate cn_link, as ctx pointer
    for two separate sccp_sap_up()s. Now there's just one such ctx, so determine
    is_ps from the RANAP Domain Indicator, or from the conn's hnbgw_context_map:
    
    - Add is_ps to context_map_alloc_by_hnb().
    - To find a matching context, the RUA ID alone is no longer sufficient, also
      match is_ps (possible optimization todo: separate lists).
    
    We would send separate CS or PS Reset messages based on the cn_link, instead
    send both CS and PS Reset at the same time for the single cn_link. This could
    be adjusted to detect presence of MSC or SGSN instead.
    
    Pending: adjust the VTY config to reflect that there is only one remote
    address. Place a TODO comment for that.
    
    Smaller changes:
    
    Remove DSUA.
    
    Don't build dummy_cn which is still implemented on SUA. Mark todo to maybe
    re-include it based on M3UA later.
    
    In hnbgw_cnlink, place sccp related items in a separate sub-struct.
    
    Do not keep an llist of cn_links, just have the one. Remove iteration and list
    management.
    
    Remove code dup: have one switch() on the domain indicator in rua_to_scu()
    instead of three separate ones with the callers.
    
    Patch-by: hwelte, nhofmeyr
    Change-Id: I8ac15fa2fd25bedb26297177e416976a5389b573

http://cgit.osmocom.org/osmo-iuh/commit/?id=ed2924aeb032122a84328e0875f25b6c47b7b328

commit ed2924aeb032122a84328e0875f25b6c47b7b328
Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Date:   Mon Jul 3 16:33:14 2017 +0200

    cosmetic: move callers' common switch() into rua_to_scu()
    
    Change-Id: If6274e3738dc04646d0dc18332c12237e6910d18

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

Summary of changes:
 src/context_map.c |  1 -
 src/hnbgw_cn.c    |  2 --
 src/hnbgw_rua.c   | 33 ++++++++++++++++-----------------
 3 files changed, 16 insertions(+), 20 deletions(-)


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