Attention is currently required from: laforge, pespin.

neels has posted comments on this change. ( 
https://gerrit.osmocom.org/c/osmo-hnbgw/+/31431 )

Change subject: context map: introduce RUA and SCCP FSMs to fix leaks
......................................................................


Patch Set 5:

(2 comments)

File include/osmocom/hnbgw/context_map.h:

https://gerrit.osmocom.org/c/osmo-hnbgw/+/31431/comment/9590d2bc_29e51994
PS5, Line 22: enum map_rua_fsm_event {
> not critical, but this is where the ISO/OSI style request/indication naming 
> could be useful to clear […]
(hold on, the PLEASE_DISCONNECT should not be there anymore. Leftover from an 
intermediate patch state. will fix.)

RUA_EV_RX_ means a RUA PDU has arrived from HNB.
SCCP_EV_RX_ means an SCCP PDU has arrived from CN.

the _EV_TX_ means that one FSM asks the other to forward a RANAP PDU to the 
remote peer.

I am not entirely clear how to apply the OSI terms to the FSM event names.
So in the SCCP code,
- the SCCP N_DATA towards CN is always sent as an N-Data.Request prim to 
osmo_sccp_user_sap_down().
- From the CN, we always receive an N-Data.Indication

In the RUA API, these terms apparently are not used. At least I don't see them 
in the code.

Would this be correct?

   RUA          HNBGW             SCCP                  CN
    | --MAP_SCCP_EV_TX_REQUEST----> | --N-Data.Request-> |
    | <--MAP_RUA_EV_TX_INDICATION-- | <-N-Data.Ind------ |

(I want the "RX" name to be reserved for PDUs from a remote peer, and "TX" for 
PDU forwarding between internal FSMs.)


File src/osmo-hnbgw/hnbgw_rua.c:

https://gerrit.osmocom.org/c/osmo-hnbgw/+/31431/comment/bce704c5_aec1ff88
PS5, Line 183:  { RUA_ProcedureCode_id_Connect, "id-Connect" },
> No, the procdures are not called "id-Connect", but "CONNECT". See the section 
> headlines of 25.468 9. […]
ah ok, was not aware of that!



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Gerrit-Project: osmo-hnbgw
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Gerrit-Change-Id: I6ff7e36532ff57c6f2d3e7e419dd22ef27dafd19
Gerrit-Change-Number: 31431
Gerrit-PatchSet: 5
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