fa20c94456
[nat] Make create_sccp_src_ref return the SCCP Connection.
...
Right now it was not possible to just find a connection, by returning
the connection that is created we will have direct access to it. It
will be used by the local connection handling.
2010-06-15 20:24:20 +08:00
e1fb5670cd
[nat] Remove parameter that is never accessed directly
...
The msgb needs to be around when we access the parsed structure
but that needs to be guranteed by the caller handing out the parsed
structure.
2010-06-15 20:24:20 +08:00
c58da4b374
[nat] Add the notion of a "local" connection.
...
A local connection is only between the MUX and the real BSC. We will
not forward anything to the MSC. This will be needed for the IMSI
filtering as sending a CREF is not liked by every BSC...
2010-06-15 20:24:20 +08:00
605f62a16a
[nat] Do not access the con after the removal
...
In case of a RLC message we will destroy the SCCP connection. This means
that accessing the con and con->bsc will access old memory. Keep the status
local and move the con into an inner scope.
2010-06-15 20:24:20 +08:00
ed775e4c1d
[nat] Send a GSM48 message within the reject message
2010-06-15 20:24:20 +08:00
91246d724f
[nat] Move the SCCP CREF handling into a new method.
...
We will need to generate messages with a proper reason
and it is easier to do that from a dedicated method.
2010-06-15 20:24:20 +08:00
234d31218f
[nat] Use and print the connection type of a SCCP connection.
2010-06-15 20:24:20 +08:00
19c0a84fb8
[nat] Set the connection type/reason as out parameter
...
We are analyzing each CR message and it is nice to know the
reason these connections were created. Change the nat method.
2010-06-15 20:24:20 +08:00
66e1ef73c8
[nat] Use the new gsm48 method to parse the MI followed by a classmark.
2010-06-15 20:24:20 +08:00
1f38747cf1
[nat] Let IMSI DETACH and other messages pass by.
2010-06-15 20:24:20 +08:00
48945b18cd
[nat] Print on which BSC config this happend.
2010-06-15 20:24:20 +08:00
f192498885
[nat] Parse the PAGING RESPONSE inside a CR message as well.
...
Now we are parsing a CM Service Request, Location Updating Request
and the Paging Response. For all other messages we claim to not
support it and force a refuse.
2010-06-15 20:24:20 +08:00
87ef2f27e4
[nat] Check proto descriptor and the message type
2010-06-15 20:24:19 +08:00
bcb32a4ad9
[nat] Add code to filter the CM Service Request by IMSI.
...
The code should be shared among the GSM0408 implementation
and this one, and like the LU we are not handling a TMSI
properly as we have no idea where it is coming from.
2010-06-15 20:24:19 +08:00
5f10c6d6f4
[nat] Mention where the MSG is coming from.
2010-06-15 20:24:19 +08:00
e6dfb18a79
[sccp/nat] Make it optional to send data on a SCCP Connection Refuse
...
This can be used to send a Location Updating Reject down to the
BSC when it is clear that a subscriber is not allowed.
2010-06-15 20:24:19 +08:00
f1012a432c
[nat] Remove the imsi allow option on the nat level.
...
For now we have:
1.) bsc imsi deny to deny at the BSC level
2.) bsc imsi allow to allow a SIM at the BSC level
3.) nat imsi deny to deny at the global level
2010-06-15 20:24:19 +08:00
1498d2e182
[nat] Separate exit2/exit3 as this can not be shared...
...
We have tried to send a refuse for arbitary things and ended
up with a segfault... separate the exi2 and exit3 label to have
separate exits and cleanups.
2010-06-15 20:24:19 +08:00
e635dab52f
[nat] Add a token to the nat config and handle ID GET
...
This allows to chain a nat with a nat by answering to the
id get code and sending the token.
2010-06-15 20:24:19 +08:00
f76e7ef5e1
[bsc_msc] Move the id get response into the bsc_msc.c
...
Create the message in a common place and then it can be used
by tools having an a link or such.
2010-06-15 20:24:19 +08:00
52c4ba0309
[nat] Add a regexp test command to the VTY.
...
This allows to test the regexp to be used for allo/deny of
the imsi filter.
2010-06-15 20:24:19 +08:00
a0aeaa799e
[nat] Fix the regexp of the test and the command line.
2010-06-15 20:24:19 +08:00
3df0233e5d
[nat] Fix the imsi deny config write.
2010-06-15 20:24:19 +08:00
9cc1b83c54
[nat] We do not want to see the actual matches.
2010-06-15 20:24:19 +08:00
b606101011
[nat] Allow to set the description for the bsc.
...
This will allow to add description to each BSC.
2010-06-15 20:24:19 +08:00
34a96aeb32
[nat] Implement IMSI filtering...
2010-06-15 20:24:18 +08:00
f830322846
[nat] Fix the size check of the LU Request.
2010-06-15 20:24:18 +08:00
12dc89ad37
[nat] Make the string -> regexp parsing public
...
This way it can be used from within a test case to test
the regexps..
2010-06-15 20:24:18 +08:00
290ed9a98c
nat: Add code to parse the SCCP optional data.
...
First we have the Complete Layer3 Information, then we have
the IE for the Layer3 information, then the GSM48 hdr, then
the actual content with data. Right now we are parsing the
LU but we are not filtering anything yet.
2010-06-15 20:24:18 +08:00
0c08db17bf
nat: Start to add a test case.. with one CR message.
2010-06-15 20:24:18 +08:00
b4af5c9b57
nat: Introduce a nat filter that is working on the CR message.
...
Currently there is no implementation but the refusal code is
in place and will send a refusal back to the BSC.
2010-06-15 20:24:18 +08:00
d8b82066fa
[nat] Use A.B.C.D for the IP address
...
The VTY code will then be able to validate the IP Address.
2010-06-15 20:24:18 +08:00
c89c030b10
[nat] Remove range checks inside the VTY command.
...
The ranges are enforced by the VTY code.
2010-06-15 20:24:18 +08:00
2f2d3428d9
abis: Pass the abis_om_obj_inst in the nm_state_event..
2010-06-15 20:24:18 +08:00
6b6ecba1a7
nat: Have a recycle timer that removes unconfirmed SCCP connections.
...
The MSC does not respond to a SCCP CR with Paging Response as GSM
payload, when the response comes in 'too late'. Prevent the MUX having
stale connections and start removing old connections every 20 minutes.
2010-06-15 20:24:18 +08:00
886d382fea
nat: When we fail to reallocate... also close down the MGCP part
...
Give the BSC a chanche to close down MGCP ports as well.
2010-06-15 20:24:18 +08:00
c14e09bb2d
nat: Store the creation time of a sccp connection.
...
Generate it when creating the connection but also when
reusing an existing connection.
2010-06-15 20:24:18 +08:00
aad82ce7ea
nat: Print the MSC status with a new vty command.
2010-06-15 20:24:18 +08:00
e47a91b86a
bsc_msc: Add a connection timeout for the MSC.
...
When no one is listening our connection would get stuck
in the SYN_SENT state and we would be there forever.
2010-06-15 20:24:18 +08:00
569ee123a2
nat: Using the right fd can be a good idea as well
2010-06-15 20:24:17 +08:00
872d7683d3
nat: Fix bad bug, make sure the fd is not overwritten..
...
The adding of the innocent looking code was actually overwrote
the fd and then stupid things happened. Rename variables to avoid
that. rc,ret should be scratch variables...
2010-06-15 20:24:17 +08:00
9e938c680f
nat: Use TCP_NODELAY for the connection to the BSC.
...
We do not want to use NAGLE for the BSC connection.
2010-06-15 20:24:17 +08:00
74cfab7b5d
nat: Improve log messages. Refer to ip and fd.
2010-06-15 20:24:17 +08:00
da35a8da7f
nat: Make ping/pong timeout configurable.
2010-06-15 20:24:17 +08:00
5078871611
nat/bsc: Send PONG on PING, send PING from the BSC too
...
We do want to send PING/PONG in both ways to have a heartbeat
on the TCP connection. When switching over to SCTP we can rely
on the builtin heartbeat functionality.
2010-06-15 20:24:17 +08:00
906c15ec53
nat: Send a IPA PING down the stream and wait for the pong.
...
We will send a ping every 20 seconds and if we have no pong
within 5 seconds we will close down the BSC connection and
wait for a reconnect. We will start this after having
authenticated the BSC and we stop the timer when destructing
the BSC connection.
2010-06-15 20:24:17 +08:00
314191d75a
nat: Allow to only show statistics for a given BSC Cfg.
2010-06-15 20:24:17 +08:00
5cdcfa6224
nat: Do not allow a BSC to send auth messages twice.
2010-06-15 20:24:17 +08:00
3b8798184b
nat: Fix vty output for connected BSCs
2010-06-15 20:24:17 +08:00
19c3544f0a
nat: Improve log message and refer to the BSC that was lost.
2010-06-15 20:24:17 +08:00
Holger Hans Peter Freyther