There's no need to separate between BSS and CN side nowadays, the
different types are used nowehere. This separation dates from
osmo-bsc-nat code days.
Change-Id: I65effeddf033eb1955553e8d659c593b4e67f7bc
Documentation of rtp_bridge_cb was outdated, and caused confusion when
adding initial osmux support. Let's clear all the mess.
Change-Id: I42d1f2e2919eae3b1555ca4929e571855960792e
This way we have no more access to internal osmux structures.
Moreover, we already have similar information in our rate_ctrs, so
there's no need to print those there.
Change-Id: I853e118f843070ea29b19e1b0fe56b52f267437a
Receiving an unknown CID (for which we don't have an active conn) is
totally expected at the end of the call, were some messages from the
peer may be send for a while, specially if latency is high.
If this occurs, we simply drop that batch and keep decoding the osmux
message in order to keep delivering content to other circuits.
Related: SYS#5987
Change-Id: I315949853bdcc07bef15d2e8579029cc72c427cf
This is actually quite common, since our peer may be sending some osmux
packets to us a while after we have closed the conn on our side,
specially if latency is high in the network (eg satellite links).
Related: SYS#5987
Change-Id: Idffd91b68d1f98ac906d78e7fbc0e6eaa1962f9e
Let's not delay allocation of rate counters until the osmux conn is
fully enabled, since we may want to count stuff before that point in
time.
Fixes crash accessing null conn->osmux.ctrg in
MGCP_Test.TC_two_crcx_and_rtp_osmux_bidir.
Change-Id: Ic31d3567f4d24e628f8983d8362e5c7c2f66ec02
During development of the counters, they were first added to the same
RTP counter group and later on split, but some places still used the
RTP related functions to increment the counters.
Let's add a seaprate set of helpers to update the correct osmux counter
group.
Fixes: 582c2bf7b0
Change-Id: Ia2e5601c7d476b79afd95032dbc019517f8209af
So far the implementation only allowed the remote CID being the same as
the one dynamically implemented internally.
Related: SYS#6138
Change-Id: I6b03eabc0305580c9788c529bec7dda9044a008f
This makes all lines operating on rate groups way shorter. The "ctrg"
naming is already used in tons of places in osmocom code.
Change-Id: I745eddbf66e7d811bb73c8ae9bb54ea93073c71b
struct osmux_handle, which is shared by several rtp_conn, is
attached to the trunk object, since the socket also attaches to it.
Related: SYS#5987
Change-Id: If4980424cdb8e3dc26a23e9ee419c0a38912f38f
It makes sense to handle one osmux socket per trunk. Since we only so
far operate one RTP/osmux trunk, let's stick to that only one for
simplicity.
Change-Id: I173266c4058d5db9479d773d7dec1304bc8f1f99
The struct osmux_handle is a shared structure which goes together 1-1
with libosmo-netif's struct osmux_in_handle, which is common to all CIDs
to be muxed together. Hence, it makes no sense to store a specific conn
object to it, since it actually manages several of them. Hence, all the
conn specific stuff must be handled beforehand, not at osmux deliver
time.
Related: SYS#5987
Change-Id: Ie739b556e9eb7d3133e798831a09728c7cc87135
This cleans up all the code, and makes it a lot easier to add IPv6 support
later on (mostly only a matter of adding an IPv6 bind address in VTY).
Similar changes were done to the Osmux code being added to osmo-bts.
Related: SYS#5987
Change-Id: I5a100fc654f88d29b2bcd85889a5a92aef3d576d
The local Osmux IP address (cfg->osmux_addr) was never applied in
generated MGCP messages. Instead, the RTP one was written into the
MGCP message.
Related: SYS#5987
Change-Id: I305f2501221e86d1eb0140446c03f36698f3194a
This way we don't need to worry about implementation details (struct
size) in the future in case they change (they will).
Related: OS#5987
Requires: libosmo-netif.git Change-Id Ie8df581f375c9a183a7af60b431561bda82f6e34
Change-Id: I2d0d8c152b8f1234ddfcd74d6cb04b1818b41510
Since libosmocore.git Change-Id
I5cb740702805693cc7f0a550e2e093f9bfdd507c, the IuUP stack can send INIT
event more than once, it sends one each time an IuUP Initialization
message is received.
This is done since potentially a peer could send an Initialization
message at any time with a different subflow size configuration. So
ideally we should update all osmo-mgw state regarding codecs, and
forward the Init starting the procedure on the other conn of the
endpoint.
However, this scenario is most probably not going to happen right now
and it would be a lot of work to implement and test,
and subsequent INITs we received will almost surely come from
retransmissions of the initial Initialization message, which means
content will not really change.
Hence, it makes sense to simply drop the receive message (the IuUP stack
already takes care of re-ACKing it) and let the endpoint state continue
with its ongoing procedures.
Related: SYS#4705
Change-Id: Ib97bc6f57d265622e24a776b96f0a82c25d33d39
The initially merged IuUP API and implementation in libosmocore assumed
that RFCI with ID was always in the position of its ID inside the list
of RFCIs. This was the case for messages sent by ip.access nano3g as well
as our own osmocom implementation. However it was noticed that other nodes
from other vendors actually use other order, as allowed by the IuUP message
format.
Hence, we need to break the assumption and provide explicit ID
information in the list.
NOTICE: This commit implies an API change when using libosmogsm.
However, the previous API was never available in any libosmogsm release,
and only available in both libosmogsm and osmo-mgw master, so we are
only breaking compatibility between different master versions, which is
acceptable.
Related: SYS#5969
Depends: libosmocore.git Change-Id Ib21cee2e30bf83dff4e167f79541796007af9845
Change-Id: I40ebf36ad37f5196751caf2297a340e538ad28bc
Make sure that RTCP packets do not enter the code path where AMR OA and BWE
is converted. The conversion will fail and the RTCP packet will be
dropped.
Change-Id: Ic850344d8b5f7710d12e4553a4033b733dced52b
Related: SYS#5902
AMR that has the payload format bandwith-efficient is the same codec as
AMR that has the payload format octet-aligned. Its the same codec, and a
comparison of the codec info with the function codecs_same() should
return true (=equal).
The affected function codecs_same() is used by mgcp_codec_pt_translate().
When the egress payload type number is looked up, the ingress and egress
codec information is compared. When one end is using AMR in
bandwith-efficient format and the other end is using it in
octet-alingned format. Then the codec still must be recognized as the
same codec. Othersiwse the payload type number translation would not
work, even though the codec is the same on both sides.
Change-Id: I64731570c287a75d39c79c10e1bc09a37bdd54d6
Related: SYS#5834
Using "payload" there is misleading, the proper naming is payload type,
a well known term for RTP.
Change-Id: Ifcad63b0ba5068acd555960c71c3ad1489a2b870
Discovered while debugging wireshark CRC calculation and implementing
new IuUP code in libosmocore.
Change-Id: Ic8350d1f9a9e5dcefeb787462d267bfac08d778f
Remove the paragraph about writing to the Free Software Foundation's
mailing address. The FSF has changed addresses in the past, and may do
so again. In 2021 this is not useful, let's rather have a bit less
boilerplate at the start of source files.
Change-Id: I2a623f67e116d5e56091ae5860ca2a305c57e50a
Not entirely wait-free: allows waiting on a fd, and in general fd
notifications for poll-loop integration between threads.
Change-Id: I4f17042baf76d086ce6b20eb99402dc64c22c657
This was previously broken and a free endpoint was requirted to dlcx *,
additionaly globally handling this is difficult due to different
response
codes, so just do it in the functions, they know best.
Change-Id: I8cbbe5936067ea1caa7935e8d14908ac5c4010bd
There is no obvious reason why we would want to complicate the code by
caching pointers, since pointer traversal is probably not a performance
bottleneck, and if it is we should rather take a look at our dozens of
linked lists first..
Change-Id: I2456ba63598f76200d53e00223abf60bb36a49c0
there is no obvious reason why the endpoints that belong to a trunk would
have the (global) config as parent context, you can't really have endpoints
without a trunk anyway.
Change-Id: Id3d5fefc12b7d442c09c507b3a8b0231e46e3068
They are mostly not even as large as the talloc header used to
dynamically allocate them, and they are also not "shared" by anything.
Change-Id: I7b46d531c5d3b53984f2ce44538116973f6a074d
Trunk is safe, since it will not disappear sooner than the endpoints or
connections.
osmux still missing!
Change-Id: I15b01085f31e9a10a1ad381713ca2275356ca20c
No need to complicate audio codes with pointers, our "usual" string is
barely larger than a poointer, five times smaller than a talloc header,
and most importantly not really optional anyway...
Change-Id: Icc41643050a5e1ca3c66f307d60b6911ba1b8032
The test expects wrapping here, but the undefined sanitizer is not happy
with that, so disable it.
Change-Id: I59ec65519ea028d4628ba4b56c939aef70794abf
The change I19f67db1c56473f47338b56114f6bbae8981d067 removes the
policy_cb and change_cb callback funtions, but it does not remove
the related ratecounters.
Change-Id: I53aa3c890555055466e86b09a359375a10d3be7b
The rate counter and stats item groups, which are allocated in
mgcp_ratectr.c are freed using a talloc destructor that is set in the
context of the item we just allocated using the stats / rate counter API
functions. When we do that, we risk overwriting an already existing
talloc destructor. Lets instead implement own free functions and set
those as talloc_destructor from above (trunk and MGCP config)
Change-Id: Ifc5091e9f95cc721e58d1eb2e55b97102c497706
Related: OS#5201
The two callback functions policy_cb and change_cb are essentially dead
code. They also make the code more difficult to read and understand.
Lets remove them.
Change-Id: I19f67db1c56473f47338b56114f6bbae8981d067
We are currently counting events in rate counters, but there is
currently no way to get a sample of the current situation of the trunk
usage. In particular how many endpoints are currently in use.
This is a corrected version of:
Ib7b654168dc3512f55e45cc4755dc1f6f423d023
Change-Id: I6d3a74f6087512130d85002348787bffc672de81
Related: SYS#5201
The MGW domain name is usually checked while resolving the endpoint
after the trunk has been resolved. This was no problem before, but since
we allow wildcarded DLCX requests, which require only a trunk to work,
the check is not done correctly for wildcarded DLCX requests and invalid
domain names may slip through.
Checking the domain name earlier while the trunk is resolved makes sense
and it fixes the problem.
Change-Id: I9944a9103981fb5f4d0d8714ee2847ae020f76df
The logic when an endp pointer is guranteed and when we are able to
process the request without the endp pointer populated is qute complex.
This shows up as a bug to coverity.
Change-Id: I1d4221f2df13c43321d5466534485cf21f0d9010
Fixes: CID#237088
The request handler handle_delete_con currently rejects wildcarded DLCX
requests even though a wildcarded DLCX would be a valuable tool to
remove lingering connections from the trunk in case osmo-bsc has to be
restarted.
Change-Id: I5c2de6b2b61ee64ba9c0618fd20e8fc2fe6a5ed3
Related: SYS#5535
This reverts commit 6bad138c96.
Reason for revert: heap-use-after-free during 'make check'
in mgcp_test.c test_retransmission()
Change-Id: I96792a719c9c7273676ab9ffe0b9e2aae4c23166
Related: OS#5201
The function create_response_with_sdp calls add_params, which is rather short.
The code in there can also be put in create_response_with_sdp. The
decision whether the endpoint name (Z) should be added or not, should be
made by the caller.
Change-Id: I7e29c513f4386832646e96194ed6c2397405ed3b
Related: SYS#5535
There is not always an endp pointer present when mgcp_check_param() is
called but we always have a trunk pointer. Lets add a trunk parameter so
that the function can pick LOGPTRUNK when endp is not available.
Change-Id: I7327c5a105e7f0e20cabf64623ff9f36fd83bbb8
Related: SYS#5535
We are currently counting events in rate counters, but there is
currently no way to get a sample of the current situation of the trunk
usage. In particular how many endpoints are currently in use.
Change-Id: Ib7b654168dc3512f55e45cc4755dc1f6f423d023
Related: SYS#5535
At the moment the MGCP request handling and message parsing is not
clearly separated. The function mgcp_parse_header() in mgcp_msg.c is
also responsible for resolving an endpoint. This leads to unclear layer
separation. We eventually end up in a situation where we can not execute
any request handler without beeing able to resolve an endpoint, however
this is necessary if we want to implement wildcarded DLCX resquests.
In the current situation a wildcarded DLCX is not possible to implement
as we always have to resolve a an to get to the trunk which we need to
iterate. However, we just can't resolve a free endpoint in a situation
where all endpoints on te trunk are in use.
We have to refactor the request handler so that the parsing in mgcp_msg
only extracts us the endpoint name. The resolving is then done in
mgcp_handle_message() in mgcp_protocol.c. Then we are able to decide
what to do if we are unable to resolve an endpoint but still be able to
resolve the trunk.
This patch does not change the behaviour of osmo-mgw yet, but it lays
the foundation for request handler implementations that can still
perform useful actions if no endpoint but a trunk has been resolved. A
wilcarded DLCX is such a case. It does not need an endpoint, just the
trunk.
Change-Id: I9f519d8a0ee8a513fa1e74acf3ee7dbc0991cdde
Related: SYS#5535
the trunk_nr is in struct mgcp_trunk. The trunk number can not be
negative and there is no magic value that makes use of the fact that it
could be negative. Lets use unsigned int to make this less irretating.
Change-Id: I5d0e1d76adb8c92d84331a0aca2496908e41d621
Related: SYS#5535
the various types of MGCP requests are implemented in request handlers
functions. The function pointers to those functions are held in an array
that is used to find the right handler and call it then. The struct used
to model the array is defined somewhat away from the array definition
and there is also a macro in between that does not help to make the code
more understandable. Lets refactor this a bit to have it more distinct.
Change-Id: I2ef167b2ac179d2b0683a27a095f9662fda460bf
Related: SYS#5535
osmo-mgw currently does only a very simple detection method for
wildcarded requests, but it makes sense to split this detection
off into a separate function so that it can be used from different code
locations and we still have it at one place only.
Change-Id: I27018c01afb8acabfcf5d435c996cc9806e52d6b
Related: SYS#5535
The rate counter group is currently only referenced by an index. In a
system with multiple trunks this makes it difficult to say which rate
counter group belongs to which trunk sinde the index that is used does
not necessarly corespond to a specific trunk.
Since rate counter groups can now get a human readable name assigned, we
should do that.
Also E1 specific rate counters only make sense for E1-trunks, so they
should not be present on the virtual trunk.
Change-Id: I5e7f0e9081a06af48e284afa5c36a095b2847704
The braces as put before this patch would read as {"is known", "is not
yet known"}, which is confusing the actual situation.
Change-Id: Icd1f22a9f4147a2758c2f068ecba46cf7f732604
The logic in mgcp_keepalive_timer_cb() only sends dummy packets for
endpoints 1-N, leaving out endpoint 0, this is not correct it should
include all endpoints (0-N).
Change-Id: I99a9b572eac26780bc1286a8dd63c4c5652fda4f
On a deployed osmo-mgw with RTP traffic coming from a thirdparty
RTP source, it was usual to see log messages like following one from
time to time:
"The input timestamp has an alignment error of 159 on SSRC"
Doing a quick traffic analysis showed that the above mentioned RTP
source was generating traffic from time to time containing RTP packets
with the Marker (M) bit.
Those messages were logged because the verification & patching funcions
in osmo-mgw were not Marker-bit aware. Hence, this patch implements
support for Marker bit when handling RTP packets.
The Marker bit is usually used as a start of a talkspurt, and has to be
considered a syncrhonization point, where timestamp and relation to real
time don't need to match with last received RTP packet in the stream.
Related: SYS#5498
Change-Id: I1fb449eda49e82607649122b9b9d983a9e5983fa
use the recently new available API to check both remote address and
port, instead of only the port.
It doesn't make sense to configure a conn as sendrecv if we have no IP
address to send stuff to, similar to what was already being checked with
the port.
Change-Id: I6ce8cf52930d423d3db8c27251be8350a26a4ede
The following sequence of events was seen frequently in a osmo-mgw
instance running on the field with heavy traffic:
"""
endpoint:rtpbridge/1@mgw CRCX: creating new connection ...
mgcp_network.c:236 endpoint:rtpbridge/1@mgw CI:1C8CCFA9 Failed to send dummy RTP packet.
"""
Allegedly, that happens because at CRCX time the remote address may
still not be known, hence we end up trying to send a dummy rtp packet
to, for instance, host 0.0.0.0 port 0, which will of course fail.
Let's avoid sending it if the address is not yet known.
Similary, same issue could be seen during MDCX, since at MDCX we don't
necessarily need to have a valid addr+port (there could be several MDCX
and only last one set it).
Finally, the keepalive timer also needs the check, since it iterates
over all connections, and it could be that some is still not fully
configured.
Related: SYS#5498
Change-Id: I8ceafda691146823b12232b4a804b4ce74acbdc8
Several log messages showing "Failed to send dummy RTP packet." were
seen in a osmo-mgw on the field. Let's re-use the function to check and
provide more information on what's wrong to ease debugging.
Related: SYS#5498
Change-Id: Iee6ac1f4d24c131e3bf40c37e6fdc252e5208ec8
Pau Espin
Philipp Maier
Vadim Yanitskiy
Oliver Smith
Eric Wild
Neels Hofmeyr
Neels Hofmeyr