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4236 Commits

Author SHA1 Message Date
Harald Welte bbc9fac7b7 [gprs] Unify log messages of the NS protocol implementation 2010-05-04 07:20:44 +02:00
Harald Welte f76aee438e [gprs] correctly calculate the length of the BSSGP PDUs 2010-05-04 07:20:44 +02:00
Harald Welte a2ca4ed960 [gprs] pass BSSGP UL-UNITDATA Cell ID up into GMM layer 
BSSGP stores a pointer to the Cell Identifier IE in msgb->cb, which
is later used by the GMM layer to identify the cell that has sent a
given message.

This now also means that the gsm_04_08_gprs.c code is free of any
legacy references to msg->trx or struct gsm_bts.
 2010-05-04 07:20:43 +02:00
Harald Welte 8f9a3ee67b [gprs] Use stdint.h types (uintXX_t instead of u_intXX_t) 
libosmocore already uses them, it's time (at least for new code)
in openbsc to do the same.
 2010-05-04 07:20:43 +02:00
Harald Welte 30bc19a5c6 [gprs] SGSN: Expect all Identifiers to be stored at highest level 
We now expect the highest level (actual SGSN GMM code) to know
all identifiers for every element in the protocol stack, i.e.
TLLI, SAPI, BVCI and NSEI.  The layer-inetrnal state is looked
up based on those identifiers.

The reason for this is to ensure only the highest level state
needs to be persistent, while everything else can be regenerated
dynamically (e.g. in a SGSN restart)
 2010-05-04 07:20:43 +02:00
Harald Welte ec19c10829 [gprs] Ensure msgb->l3h points to Layer3 (04.08) 
In the old code
	l3h = BSSGP, l4h = LLC, cb[gmmh] = 04.08
Now, this has been changed to
	cb[bssgph] = BSSGP, cb[llch] = LLC, l3h = 04.08

This way, GSM general 04.08 and GPRS 04.08 code can expect a
GSM 04.08 header at msgb->l3h
 2010-05-04 07:20:43 +02:00
Harald Welte 2577d41526 [gprs] convert ns_cause_str to value_string 2010-05-04 07:20:43 +02:00
Harald Welte 290671d683 [gprs] BSSGP: convert cause strings to value_string 2010-05-04 07:20:43 +02:00
Harald Welte 6752fa43b6 [gprs] introduce BSSGP concept of BTS contextx 
A BTS context represents the mapping betewen (RA-ID, Cell-ID) and
(BVCI, NSEI) as well as the per-BVC local state.
 2010-05-04 07:20:43 +02:00
Harald Welte 3fddf3c4ef [gprs] Build the SGSN stand-alone and not as part of bsc_hack 
Instead of continuing to add more and more functionality to the
bsc_hack binary, we should have the new SGSN code run as a separate
executable.

After this commit we now build a 'osmo_sgsn' executable, using its
own osmo_sgsn.cfg config file.

However, the SGSN is not yet functional, mainly due to the fact that
the BSSGP and GMM code are written with the assumption that there
is a msgb->trx->bts and the according 'sturct gsm_bts' data model
around - which clearly is no longer the case outside of bsc_hack.
 2010-05-04 07:20:43 +02:00
Harald Welte 1203de3993 [gprs] fully integrate VTY configuration into Gb proxy 
The Gb-proxy is now fully configured by config file / VTY
 2010-05-04 07:20:42 +02:00
Harald Welte 3771d09ec0 GPRS: Introduce a GPRS Gb Proxy 
The ida of the Gb proxy is to aggregate Gb links with a number of BSS
and then present all the BSSGP-VC's together inside one NS-VC to the
actual SGSN.

The code is not yet expected to be complete.
 2010-05-04 07:20:42 +02:00
Harald Welte 24a655f140 gprs: remove msgb->nsvc pointer and replace it with NSEI and BVCI 
According to TS 08.16, the BSSGP layer needs to specify NSEI and BVCI when
executing the NS UNITDATA REQUEST primitive of the underlying NS layer.

Rather than passing around a pointer to the 'struct gprs_nsvc', we now
have NSEI and BVCI as members of 'struct obsc_msgb_cb' and set them
when BSSGP hands a message down to NS.

NS then does a lookup of the 'gprs_nsvc' based on the NSEI parameter.
 2010-05-04 07:20:42 +02:00
Harald Welte 645609ddc8 gprs: Use new msgb->cb[] for storing a pointer to the NS-VC through which it was received 2010-05-04 07:20:42 +02:00
Harald Welte f030b210e8 GPRS: Modularize the NS implementation 
* move UDP listener code for NSIP from input/ipaccess.c and into gprs_ns.c
* add PDU type, IE and CAUSE values for later IP based 3GPP TS 48.016
* support multiple NS-VCs and their lookup based on NSVC and sockaddr_in
* maintain the remote_state (blocked/alive) for each NSVC
* introduce the concept of GPRS_NS instances, move all global vars to instance
* remove hardcoded calls to gprs_bssgp_rcvmsg() and replace it by callback

WARNING: This is not finished code.  While it will compile, it will not work
yet, as BSSGP needs to be converted to properly indicate the NSVC to which it
needs to send data.
 2010-05-04 07:20:42 +02:00
Harald Welte 510c3920c8 gprs: Update gprs-sgsn branch to use new msgb->cb layout 
The explicit 'tlli, gmmh' members of struct msgb are gone from
current libosmocore and have been replaced by the more generic
'control buffer' mechanism.
 2010-05-04 07:20:41 +02:00
Harald Welte c547848ead GPRS: remove hard-coded IP address for NSIP responses from SGSN->BTS 2010-05-04 07:20:41 +02:00
Harald Welte 9ba500559a Create new 'gprs-sgsn' branch on top of 'gprs-conf' 
This branch contains the partial SGSN/GGSN implementation that
was originally developed as part of the gprs branch.
 2010-05-04 07:20:41 +02:00
Harald Welte 95df5c0179 msgb: initialize cb[] to zero during msgb_reset() 2010-05-01 23:53:26 +02:00
Harald Welte 20488d4881 Merge commit '35a939463eee58492c88cbe7531288237cdcf454' 2010-05-01 14:27:23 +02:00
Harald Welte 35a939463e Import gsm48_construct_ra() from openbsc 2010-05-01 14:25:22 +02:00
Harald Welte 3c73dda6ca Merge commit 'debf95507461965aa82be2fa2bf34119343cfb0e' 2010-05-01 12:07:56 +02:00
Harald Welte debf955074 gsm48.h: Prevent accidental re-inclusion of same header file 2010-05-01 12:06:48 +02:00
Harald Welte a1c4f765ec import gsm48_parse_ra() and gprs_tlli_type() from openbsc 2010-05-01 12:00:21 +02:00
Holger Hans Peter Freyther 5ba4dc171b Add missing file. 2010-05-01 15:14:05 +08:00
Harald Welte 871774ee89 Merge commit '074c9f904cb5e4f6ab014d76e4abc079c16fc5d7' 2010-04-30 14:29:56 +02:00
Harald Welte 074c9f904c msgb: introduce msgb->cb (the control buffer) 2010-04-30 14:29:11 +02:00
Harald Welte bb77c9d6cc msgb: remove smsh, llch, tlli and gmmh 
This is a lot of GSM/GPRS specific stuff in struct msgb which we want
to avoid.  The 'control buffer' will replace them.
 2010-04-30 14:26:12 +02:00
Harald Welte 3120ac3f78 remove the unneeded bts_link pointer from msgb 2010-04-30 14:19:48 +02:00
Sylvain Munaut 100224df0b Update .gitignore 
m4/*.m4 -> autoreconf adds stuff there
tests   -> Build product

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2010-04-28 10:10:47 +02:00
Sylvain Munaut a074ec4b89 gsm 08.08: Fix some u_int8_t -> uint8_t 
This breaks the ARM build in osmocom-bb. Besides uint??_t seems to
be the preferred type in osmocore. (coming from stdint.h vs sys/types.h)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2010-04-28 10:05:29 +02:00
Sylvain Munaut 221030fc85 gsm_utils: Just add some constant and timekeeping utils 
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2010-04-27 21:48:40 +02:00
Holger Hans Peter Freyther c646345647 Merge branch 'on-waves/sccp' 2010-04-25 23:07:24 +08:00
Holger Hans Peter Freyther f3e25ed7ae Merge branch 'on-waves/mgcp' 2010-04-25 23:03:30 +08:00
Holger Hans Peter Freyther 17c3712dae Merge branch 'on-waves/mgcp' 2010-04-17 06:46:06 +02:00
Holger Hans Peter Freyther ba6172a7fd gsm0808: Port asiggnment_complete msg creation to libosmocore. 2010-04-17 06:21:49 +02:00
Holger Hans Peter Freyther 81716d5fa8 gsm0808: Port cipher_complete to be part of libosmocore. 2010-04-17 06:16:35 +02:00
Holger Hans Peter Freyther 7daa01c434 gsm0808: Add the TLV definition for some of the 0808 IEs 2010-04-17 05:14:36 +02:00
Holger Hans Peter Freyther 280cd5153f Add GSM0808 utilities to Osmocore. 
The code is coming from the on-waves/bsc-master branch.
 2010-04-15 10:10:39 +02:00
Holger Hans Peter Freyther 2c86c2a726 gsm_08_08.h: Remove OpenBSC include file from the header. 2010-04-15 10:01:39 +02:00
Holger Hans Peter Freyther ebaed74e17 Add GSM08.08 protocol header. 
This header is copied from bssap.h of the on-waves/bsc-master
branch and only contains the protocol specific information.
 2010-04-15 03:14:51 +02:00
Holger Hans Peter Freyther 23ba4747d1 select.c: Make the ugly hacker uglier... 
Right now I'm seeing crashes when removing a link and deleting
it and I need this hack to make it not crash. We will have to
understand if llist_for_each_entry_safe has a bug or if we are
doing something bad with the list (anchors not properly initialized).
 2010-04-11 17:34:52 +02:00
Harald Welte 163d0ea85b remove references to u_int*_t and use uint*_t instead 2010-04-09 07:57:40 +02:00
Andreas Eversberg 1ef041ff1e gsm48: introduce MM_CONNECTION_PEND state 2010-04-09 07:52:12 +02:00
Harald Welte b1ac2b96f8 gsm48-ie.c: Fix year in copyright message 2010-04-09 07:51:03 +02:00
Holger Hans Peter Freyther 4052c811a9 write_queue: Add callback for exceptions as well. 2010-04-08 10:58:20 +02:00
Holger Hans Peter Freyther 428f2301eb Merge branch 'master' into on-waves/mgcp 2010-04-07 23:03:27 +02:00
Holger Hans Peter Freyther e1d67ecc43 Merge branch 'on-waves/sccp' 2010-04-07 22:54:12 +02:00
Holger Hans Peter Freyther 8975522b84 Merge branch 'on-waves/mgcp' 2010-04-07 22:54:07 +02:00
Holger Hans Peter Freyther ca2c31c765 Merge remote branch 'origin/master' into on-waves/mgcp 2010-03-30 15:35:26 +02:00