Commit Graph

24 Commits

Author SHA1 Message Date
Oliver Smith d4b4edd316 gprs_ns_vty: return success for disabled FR/GRE
Do not return a warning and therefore fail parsing the config when the
"encapsulation framerelay-gre local-ip" command is used and FR/GRE is
disabled. Having this in the config does no harm and allows keeping the
same config if it is enabled later.

This fixes the currently failing vty tests for osmo-sgsn.

Fixes: a0c8195ad3 ("vty: Return error if cmd returns CMD_WARNING while reading cfg file")
Change-Id: Ic225232fbfca49ba868427eaf898e1f6e34e1ca8
2019-10-29 15:09:36 +01:00
Pau Espin d12f698dbb logging: Introduce mutex API to manage log_target in multi-thread envs
log_enable_multithread() enables use of locks inside the
implementation. Lock use is disabled by default, this way only
multi-thread processes need to enable it and suffer related
complexity/performance penalties.

Locks are required around osmo_log_target_list and items inside it,
since targets can be used, modified and deleted by different threads
concurrently (for instance, user writing "logging disable" in VTY while
another thread is willing to write into that target).

Multithread apps and libraries aiming at being used in multithread apps
should update their code to use the locks introduced here when
containing code iterating over osmo_log_target_list explictly or
implicitly by obtaining a log_target (eg. osmo_log_vty2tgt()).

Related: OS#4088
Change-Id: Id7711893b34263baacac6caf4d489467053131bb
2019-10-09 14:19:52 +02:00
Harald Welte 047f3872f5 NS: Add support for GPRS NS IP Sub-Network-Service (SNS)
The NS implementation part of the Gb implementation libosmogb
so far implemented a rather classic dialect of Gb, with lots of
heritage to FR (Frame Relay) transports.  At least since Release 6
of the NS specification, there's an IP Sub-Network Service (SNS),
which
* permits for dynamic configuration of IP endpoints and their NS-VCs
* abandons the concept of a NSVCI on IP transport
* forbids the use of RESET/BLOCK/UNBLOCK procedures on IP transport

This commit introduces BSS-side IP-SNS support to libosmogb in a
minimally invasive way.  It adds a corresponding SNS FSM to each NS
instance, and implements the new SIZE/CONFIG/ADD/DELETE/CHANGE_WEIGHT
procedures very closely aligned with the spec.

In order to use the SNS flavor (rather than the classic one),
a BSS implementation should use gprs_ns_nsip_connect_sns() instead
of the existing gprs_ns_nsip_connect().

This implementation comes with a set of TTCN-3 tests in
PCU_Tests_RAW_SNS.ttcn, see Change-ID
I0fe3d4579960bab0494c294ec7ab8032feed4fb2 of osmo-ttcn3-hacks.git

Closes: OS#3372
Closes: OS#3617
Change-Id: I84786c3b43a8ae34ef3b3ba84b33c90042d234ea
2019-02-26 12:18:30 +01:00
Harald Welte dc802810df NS: Don't print information about FR/GRE if not enabled!
Change-Id: I9209ee4ba5ebfc4f96b4c1d42840e1906455bae7
2019-02-23 11:34:31 +01:00
Harald Welte e08da97570 Fix/Update copyright notices; Add SPDX annotation
Let's fix some erroneous/accidential references to wrong license,
update copyright information where applicable and introduce a
SPDX-License-Identifier to all files.

Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af
2017-11-13 01:35:12 +09:00
Max cbf5cdfe7e GPRS: constify NS printing routine parameters
Change-Id: I549ab7c26ac1489e01f281594bafe44b0681dc83
2017-10-24 16:34:41 +00:00
Max 296511befc GPRS: add vty command to show only persistent NS
The regular 'sh ns' lists all available NS. Sometimes it's handy to know
which of those are persistent.

* add "show ns persistent" command
* adjust parameters of dump-ns*() functions to use bool where
  appropriate

Change-Id: Ib812864bae3ea414cc107a7b4f49bea4e6161795
2017-10-24 16:34:40 +00:00
Max 37f465e275 GPRS: check and report local address used for NSE
When dumping NSE via vty:
* check which local address would be used to communicate with a given
  NSE and print it
* print link layer type last to make output more consistent

Change-Id: I6932a29c7899d36bcc275f05dda9670b0e69bef0
Related: SYS#3610
2017-10-24 14:33:31 +00:00
Max 9530859654 GPRS: clarify ip/frgre union use
* add comment about underlying assumption that structs in ip/frgre union
  members in gprs_nsvc struct have the same memory layout
* remove such assumption from gprs_ns_ll_str()
* use gprs_ns_ll_str() for NSE dump

Change-Id: Idcb912b7b3f7460fd2b058e16650c0bde8f757ee
2017-10-24 14:33:31 +00:00
Max 4ce24c45b9 GPRS: unify NS state printing
* introduce defines with NS state names
* use them for vty and tests
* expand test output to print complete NS state

Change-Id: I69f8d536135ae76dbca623c2f1ffba625adcb1e9
Related: SYS#3610
2017-10-24 14:33:30 +00:00
Max 32f9971a71 GPRS: print remote state info for NS peer
Change-Id: I1714c68909507eae6ef2933661a085859aca3b54
Related: SYS#3610
2017-10-20 12:27:49 +02:00
Neels Hofmeyr f4f23bd682 vty: install 'exit', 'end',... commands on *all* nodes
In many callers of the VTY API, we are lacking the vty_install_default() step
at certain node levels. This creates nodes that lack the 'exit' command, and
hence the only way to exit such a node is to restart the telnet session.

Historically, the VTY looked for missing commands on the immediate parent node,
and hence possibly found the parent's 'exit' command when the local node was
missing it. That is why we so far did not notice the missing default commands.

Furthermore, some callers call install_default() instead of
vty_install_default(). Only vty_install_default() also includes the 'exit' and
'end' commands. There is no reason why there are two sets of default commands.

To end this confusion, to catch all missing 'exit' commands and to prevent this
from re-appearing in the future, simply *always* install all default commands
implicitly when calling install_node().

In cmd_init(), there are some top-level nodes that apparently do not want the
default commands installed. Keep those the way they are, by changing the
invocation to new install_node_bare() ({VIEW,AUTH,AUTH_ENABLE}_NODE).

Make both install_default() and vty_install_default() no-ops so that users of
the API may still call them without harm. Do not yet deprecate yet, which
follows in Icf5d83f641e838cebcccc635a043e94ba352abff.

Drop all invocations to these two functions found in libosmocore.

Change-Id: I5021c64a787b63314e0f2f1cba0b8fc7bff4f09b
2017-09-27 14:04:09 +00:00
Neels Hofmeyr 607275c30b gb: drop special vty exit commands, use vty_install_default()
L_NS_NODE and L_BSSGP_NODE had specialized 'exit' and 'end' vty commands, but
all they do is return to the CONFIG and ENABLE_NODEs like the default 'exit'
and 'end' commands. Drop them and use the default 'exit' and 'end' cmds.

Examining BSSGP and NS node behavior in osmo-sgsn exhibited identical list and
exit/end behavior before and after this patch.

Prepares for an upcoming commit incorporating vty_install_default() into
install_node(), see I5021c64a787b63314e0f2f1cba0b8fc7bff4f09b: this patch
changes to the default commands, the upcoming change implies them.

Change-Id: I5b0de066b4249d482c22620d5b1bcb03f381293c
2017-09-27 14:04:08 +00:00
Neels Hofmeyr 17518fe393 doxygen: unify use of \file across the board
Considering the various styles and implications found in the sources, edit
scores of files to follow the same API doc guidelines around the doxygen
grouping and the \file tag.

Many files now show a short description in the generated API doc that was so
far only available as C comment.

The guidelines and reasoning behind it is documented at
https://osmocom.org/projects/cellular-infrastructure/wiki/Guidelines_for_API_documentation

In some instances, remove file comments and add to the corresponding group
instead, to be shared among several files (e.g. bitvec).

Change-Id: Ifa70e77e90462b5eb2b0457c70fd25275910c72b
2017-06-23 00:18:23 +00:00
Harald Welte bfe62e5781 libosmogb: Convert to use new endian conversion helpers
Change-Id: I5ed17702cd9487e1cab6bae39802aa11fb6a37b0
2017-05-15 13:42:03 +02:00
Neels Hofmeyr 8b86cd76cf logging.h: fixup: shorter names for LOGGING_FILTER_* and LOGGING_CTX_*
My recent logging patch was merged to master a bit too soon. Accomodate the
request for naming that matches the general "LOG" prefix instead of "LOGGING".

libosmocore will not be backwards-compatible with the few commits from
change-id I5c343630020f4b108099696fd96c2111614c8067 up to this one. This and
following commits are backwards compatible with those before that short window.

See also:
* openbsc change-id Ib2ec5e4884aa90f48051ee2f832af557aa525991
* osmo-pcu change-id I4db4a668f2be07f3d55f848d38d1b490d8a7a685

Change-Id: I424fe3f12ea620338902b2bb8230544bde3f1a93
2017-02-23 18:08:12 +01:00
Neels Hofmeyr 812ba6dc63 logging: centrally define ctx and filter indexes
It is too easy for calling code to use the same filter and context indexes for
different filters and structs. For example, openbsc's IMSI filter and libgb's
GPRS_BVC filter both fall on index 1 even though there are plenty more indexes
to choose from. To alleviate this, have one central definition here, sort of
like ports.h does for VTY and CTRL port numbers.

Add static asserts to make sure the indexes fit in the available array and bit
mask space.

Calling code like openbsc.git and osmo-pcu need adjustments and/or should move
to using these enum values instead of their local definitions.

Taking this opportunity to also prepare for a split of struct gsm_subscriber in
openbsc into bsc_subsciber and vlr_subscriber with appropriate separate filter
index constants for both subscriber types.

Include previous LOG_FILTER_ALL in the LOGGING_FILTER_* enum, and replace its
use by (1 << LOGGING_FILTER_ALL).

Change-Id: I5c343630020f4b108099696fd96c2111614c8067
2017-02-22 16:08:38 +00:00
Neels Hofmeyr c32bfd5824 gprs_ns_vty: guard against duplicate VTY elements
The TbfTest in osmo-pcu calls gprs_ns_vty_init() repeatedly, which aborts
because of duplicate VTY elements. Fix this by skipping the VTY init if
it already happened.

Change-Id: I05c7f25a4e873ae76b206819180b8b043b60103e
2017-01-12 22:32:36 +01:00
Jacob Erlbeck 0a1400fc83 ns: Add statistics for some events
The following counters are added to the ns.nsvc counter group:
  lost.alive             The number of missing ALIVE ACK messages
  lost.reset             The number of missing RESET ACK messages

The following items are added to the ns.nsvc stat item group:
  alive.delay            The time in ms between sending ALIVE and
                         receiving the next ALIVE ACK

Sponsored-by: On-Waves ehf
2015-10-28 23:51:24 +01:00
Harald Welte 7fa89c2e88 Change license of libosmogb from AGPLv3+ to GPLv2+
The copyright holders Harald Welte, Holger Freyther, Andreas Eversberg
and sysmocom - s.f.m.c. GmbH (represented by Holger and Harald) agree
that the license of libosmogb should be GPLv2+ and not AGPLv3+.

The reason the source files stated AGPLv3+ is due to the history, as
they were moved from OpenBSC to libosmocore at the time we needed to use
them from osmo-pcu.  It was an oversight back then to not re-license
them accordingly.
2014-10-26 20:50:19 +01:00
Jacob Erlbeck 35fe87c686 gb/vty: Fix the VTY node string for L_NS_NODE
Use 'config-ns' instead of plain 'ns' and append a blank after the
'#' to make the vty python test script work.

Sponsored-by: On-Waves ehf
2013-10-24 10:01:18 +02:00
Jacob Erlbeck 687b690876 gb/vty: Perform NS-VC operations based on NS-VCI
This adds a 'nsvc nsvci <0-65535> (block|unblock|reset)' vty
command. It selects the NS-VC based on the nsvci instead of using the
first with a matching NSEI, like it is done when the 'nsei' keyword
is used instead.

Sponsored-by: On-Waves ehf
2013-10-24 10:00:42 +02:00
Holger Hans Peter Freyther 2c3393d9e3 gprs_ns: Allow to set the DSCP for the UDP socket.
Allow to tag the NS service with a custom DSCP.
2013-03-25 12:06:36 +01:00
Harald Welte 641f7cee5d libosmogb: move files to proper location and fix build 2012-06-17 23:05:26 +08:00