Let's print a WARNING rather than OSMO_ASSERT() until we're sure we've
caught all code paths that would remove the hnb_context.
This fixes any related crashes by simply discarding received messages
whenever there's no HNB-context around.
Closes: OS#5676
Change-Id: I1eedab6f3ac974e942b02eaae41556f87dd8b6ba
Don't release the HNB context as there's plenty of code that
assumes there's always a HNB context associated with a SCTP connection.
Instead, simply unset the hnb_registered flag in the context when
processing a HNB_DE-REGISTER.
Related: OS#5676
Change-Id: Id5c4f5c900ea049f54afbf58edb84b4dc00b1dcb
By default systemd will execute service with root directory (or home directory for user instance) which might result in
attempts to create files in unexpected place. Let's set it to 'osmocom' subdir of state directory (/var/lib for system instance) instead.
Related: OS#4821
Change-Id: I3133dc7a687550901841755461db6020ee96d6b1
Tested in ttcn3, by test cases not ready for submission (would require
enabling/disabling PFCP while osmo-hnbgw is running).
ttcn3 tests in I511e758807e0512c18f3f9e0a8c4699b9a3f5992
Related: SYS#6093
Change-Id: I39b9632f8524a9f3455c1a2d7611bfe8ba07c2fd
In I62c4935bcc7f684bfe850f88f1b80e8970e0e098 we added a new example
config file, but didn't actually package it in dpkg or rpm packages
yet. This also lead to package build failures like:
[ 39s] RPM build errors:
[ 39s] Installed (but unpackaged) file(s) found:
[ 39s] /usr/share/doc/osmo-hnbgw/examples/osmo-hnbgw/osmo-hnbgw-pfcp.cfg
Change-Id: I7c5c346f67f003b2cc5d74e812441c3704b133ef
* Use osmo_stream closed_cb to call hnb_context_release() in all cases
* Also call hnbap_free_hnbregisterrequesties() when sending hnb register
reject
Related: OS#5656
Change-Id: I3ba02b0939413c67bc8088ea1a8f2252fc2bda31
Change from ascii art to the dotty chart, taken from the osmocom.org
wiki. No need to keep a separate representation here.
Change-Id: Ifd8843aeb8ff28fec53323c8fb37b10d4d1f2f9b
For the benefit of skipping decoding of all PS RANAP and RUA messages,
introduce code dup: decode CS and PS separately.
Related: SYS#5895
Change-Id: Ifb57bad6a0d5ff263e4c6c3facc51620e110e7d2
ranap_rab_ass_req_encode() forms a msgb, then copies the data to a
buffer provided by the caller. Instead, just return the msgb. This
removes one unnecessary memcpy() and simplifies some code.
In ranap_rab_ass_test.c, actually ensure the correct size of the
returned data. See also the fix of expected test data in patch
Ifb98a52e56db1227a834c0d7b7a260314d9f547e
Related: SYS#5895
Change-Id: I85e715326e1d8f4f301f82f78da109f1a7a92f30
There is an extra zero octet at the end of the test data, which does not
get encoded back. The test currently does not detect this, but will in
upcoming patch I85e715326e1d8f4f301f82f78da109f1a7a92f30.
Related: SYS#5895
Change-Id: Ifb98a52e56db1227a834c0d7b7a260314d9f547e
For the tdefs used by libosmo-mgcp-client, passed via
osmo_mgcpc_ep_alloc(), do not use the separate mgw_tdefs. Instead, move
X2427 to mgw_fsm_T_defs. This makes X2427 VTY configurable.
Related: SYS#5895
Change-Id: I2aa67121c20dc3da5fd937a02b6747468622f317
Let's have a unified way of freeing the FSM instance once it was
allocated, otherwise it's far more difficult to understand and maintain.
Change-Id: I8883e737fa112cff57834abae7ef272388a54edb
The error handling of the error path was wrong. Let's remove the "fi"
variable to avoid more of such errors. Furthermore, add an assert to
clarify for the reader that the map->mgw_fi will be freed before
allocating a new FSM instance below.
Change-Id: I9d3bca552bfa77f5e18f75bedad8d422f74df1f8
This is misleading for readers since it may access variables which may
be uninitialized or in a wrong state. Furthermore, we want to pass some
other variable name in a follow up patch.
This effectively allows the compiler to warn about uninitialized used of
a fi var in line 661.
Change-Id: Id694f51bb2918fd27da87b3f4a905727cd7f5de6
In mgw_fsm_handle_rab_ass_resp(), a NULL mgw_fi is handled as error,
but the error handling fails to return. The function continues to
dereference mgw_fi. Add missing return.
Related: SYS#5995
Change-Id: I3e98dc3a00145ec1f71c678bbf45debfd4276237
It is reported that a third-party SGSN is rejecting SCCP CR when the
SCCP message part exceeds a certain length. The solution is to first
send an SCCP CR without payload, and send the payload in a DT later.
Add config option
hnbgw
sccp cr max-payload-len <0-999999>
If the RANAP payload surpasses the given length, osmo-hnbgw will first
send an SCCP CR without payload, cache the RANAP payload, and put that
in an SCCP DT once the SCCP CC is received.
The original idea was to limit the size of the entire SCCP part of the
message, but I'm currently not sure how to determine that without
copying much of the osmo_sccp code. I figured using a limit on the RANAP
payload is sufficient. To avoid the error with above third-party SGSN,
the easy solution is to set max-payload-len to 0, so that we always get
a separate SCCP CR without payload.
Related: SYS#5968
Related: I827e081eaacfb8e76684ed1560603e6c8f896c38 (osmo-ttcn3-hacks)
Change-Id: If0c5c0a76e5230bf22871f527dcb2dbdf34d7328
There can be SCCP primitives without payload data, e.g. an "empty" SCCP
Connection Request.
Patch 'mgw_fsm: add MGW support to osmo-hnbgw' added RANAP message
decoding that lacks a guard against NULL data. Fix that: do not try to
decode NULL data.
Related: SYS#5968
Change-Id: Id755e769e82ace7203460ea1b3c847c2c90d41bf
Upcoming patch adds to this function. Let me first combine those four
LOGP() to a single one, use proper osmo_sccp_addr_to_str_c(OTC_SELECT).
To be able to use OTC_SELECT, switch hnbgw.c to osmo_select_main_ctx().
Related: SYS#5968
Change-Id: I1e0ea0a883e8cf65e6cfb45ed9b6f3d8fb7c59eb
The spec permits RAB AssignmentRequests with multiple RABs at a time.
Even though one voice call is assigned only one RAB in practice. Since
the current FSM implementation only supports a 1:1 scenario, lets check
if the MSC really assigns only one RAB and block RAB Assignments that do
not fit in this scheme.
Change-Id: I0f1d868fd0b4dc413533d6fcc5482862825181be
Related: OS#5152
While the FSM is created the RAB Assignment Requests is checked and
parsed. In case of failure the context is freed, but the CN is not
informed about the problem. The RAB AssignmentRequest will then most
likely time out. However, lets make sure the call is released by re
requesting an IU Release.
Change-Id: I1904f7e95d86bbcecee14f8721bd4075d0e33ab4
Related: OS#5152
There are several osmo processes that talk to osmo-mgw via
osmo-mgcp-client. The sample config for osmo-bsc suggest 2727 and the
sample config for osmo-msc suggests 2728 as local port default. To make
it less likely for users to get port collisions whlie setting up their
networks we should use a different port for osmo-hnbgw. Lets use 2729.
Change-Id: I55179c2bff3e6ef0e54fee6b1b90fc76f541e58e
OsmoHNBGW now requires a co-located OsmoMGW instance. Lets add add some
info on how to configure it.
Change-Id: Id47f4f365cee78ce28d1534c4e3e98a59bdb0621
Related: OS#5152
osmo-hnbgw lacks support for an co-located media gateway. This makes it
virtually impossible to isolate the HNB from the core network properly.
Lets add MGCP support to osmo-hnbgw so that it can control a co-located
media gateway to relay the RTP streams between HNB and core network.
Change-Id: Ib9b62e0145184b91c56ce5d8870760bfa49cc5a4
Related: OS#5152
A RANAP RAB-AssignmentRelease may contain a ReleaseList. In order to
detect that a RAB is about to be released we need to be able to check if
the RAB we are dealing with is contained in such a ReleaseList.
Change-Id: I5b67cc2d35d11de7a09e66c181a1fdd5a58c75bb
Related: OS#5152
Harald Welte
Max
Neels Hofmeyr
Daniel Willmann
Oliver Smith
Vadim Yanitskiy
Pau Espin
Philipp Maier