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2016-11-09SGSN: Use dummy all-zero MSISDN value in PDP Context Act on GTPHarald Welte1-1/+14
The GTP protocol specification requires us to include the MSISDN IE in all non-secondary PDP context activations. However, when no real HLR is used (e.g. via GSUP), we do not have the MSISDN information available and so far simply sent a zero-length MSISDN IE in GTP. The latter is a violation of the spec. So to resolve this, we now send a 15-digit all-zero dummy MSISDN IE, as described in TS 23.003. Change-Id: I8d0a5d52d6cd2a00b5dda060bd41d45056dfa84d
2016-10-28sndcp: Fixups for sndcp layer based on coverity-scan suggestionsPhilipp3-13/+15
- missing break in gprs_sndcp_pcomp.c, line 143 - string overflow in slhc_test.c, line 211 - sizeof mismatch in gprs_sndcp_xid.c, line 1369 and 1378 - mismatching signedness in gprs_sndcp_xid.c, line 1377 - needless < 0 comparison in gprs_sndcp_xid.c, line 477 - needless < 0 comparison in gprs_sndcp_xid.c, line 209 - missing returncode check in v42bis_test.c, line 320 - wrong pointer dereferentialization in gprs_sndcp_comp.c, line 73 Change-Id: I4f9adf251f5119e67ffe76baad6f1f996ac8dbad
2016-10-13msgb ctx: use new msgb_talloc_ctx_init(), don't access talloc_msgb_ctxNeels Hofmeyr2-5/+2
Drop extern definitions of talloc_msgb_ctx and use msgb_talloc_ctx_init() instead. In sgsn_test.c, use a local variable msgb_ctx to do the talloc report from the return value of msgb_talloc_ctx_init(). Change-Id: I2f9ace855f0ecbdc9adf5d75bcb1a3d666570de4
2016-10-13msgb talloc ctx: initialize in all main() scopesNeels Hofmeyr1-0/+1
Add msgb_talloc_ctx_init() call to many main() functions still lacking a msgb talloc context. Change-Id: Ib0d6751260659cabf18a7ce80680ba2fb4228ea1
2016-10-04gprs/gprs_llc: count UI frames over SAPI in the statisticsAlexander Couzens1-0/+3
Change-Id: I5f38d70e046ce9ca1342e6f862329dc3cded8995
2016-09-30log CTRL bind only onceNeels Hofmeyr1-2/+0
After libosmocore 38d232ee5d2ceb045d9ad6d3a23afcb4972523f7 which outputs 'CTRL at <ip> <port>' from ctrl_interface_setup_dynip(), there's no need to log the CTRL bind here anymore. Change-Id: I1a874efe365a1ecf8ec37b058215b95b9a635ec2
2016-09-29fix: send SNDCP XID only on GERAN Gb contextsNeels Hofmeyr1-5/+7
Add a condition for GERAN Gb. SNDCP and IuPS were developed on separate branches, and the merge results in code trying to use an llme on a UTRAN Iu context where the llme is NULL, leading to stack corruption upon PDP ctx act. Change-Id: Ibb20d738c1b64d36630ce8eceb54c33ba4f1b003
2016-09-28COSMETIC: 'if' is not a function, so there is space before '('Harald Welte3-5/+5
Change-Id: Ic22623dffce998d70a3c67aa6e445de98f558ed7
2016-09-27log VTY telnet bind only onceNeels Hofmeyr3-6/+0
After libosmocore 55dc2edc89c1a85187ef8aafc09f7d922383231f which outputs 'telnet at <ip> <port>' from telnet_init_dynif(), there's no need to log the telnet VTY bind here anymore. Change-Id: I97a730b28759df1d549a5049f47a3da1c16a3447
2016-09-24SNDCP: add V.42bis data compression functionalityPhilipp6-18/+521
- Add compression control for V.42bis Add code to handle compression (gprs_sndcp_dcomp.c/h) - Add Adjustments in SNDCP - Add VTY commands Change-Id: I6d36cbdf2f5c5f83ca9ba57c70452f02b8582e7e
2016-09-24V.42bis: integration and unit testPhilipp2-13/+17
- Edit previously committed V.42bis implementation to function outside IAXmodem. - Add unit test to verify the correct function of V.42bis Change-Id: I689413f2541b6def0625ce6bd96f1f488f05f99d
2016-09-24V.42bis: add sourcecode from IAXmodem (SPANDSP)Philipp1-0/+764
V.42bis is a data compression method found in modems. It has also been specified for GPRS as data compression algorithm. The implementation has been taken from IAXmodem: https://sourceforge.net/p/iaxmodem/code/HEAD/tree/ svn checkout svn://svn.code.sf.net/p/iaxmodem/code/ iaxmodem-code Revision: r36 Change-Id: Iabedece9f97ca944a1e3f747bb073e532c4e9dca
2016-09-24SNDCP: add RFC1144 header compression functionalityPhilipp7-31/+1300
- Add module to handle compression entities - Add module to control header compression - Introduce VTY commands for heade compression configuration - Add changes in sndcp and llc to integrate header compression Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43
2016-09-24RFC1144: integration and unit-testPhilipp3-88/+163
The previously pushed slhc implementation has been modified to compile and function outside of the kernel. Also debug log messages were added and datatypes ware matched. The implementation is now ready to be used Change-Id: I7a638e88a43b3eb9d006751a03ef2570e36613f0
2016-09-24RFC1144: add slhc code from linux kernelPhilipp1-0/+744
SLHC is an Implementation of RFC1144 TCP/IP header compression. We will need RFC1144 compression to compress GPRS TCP/IP traffic. The implementation pushed with this commit was taken from: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git commit 29b4817d4018df78086157ea3a55c1d9424a7cfc Change-Id: Ied69c143678dc4a64cecc671f5c4dfebe19d8519
2016-09-24SNDCP: add SNDCP-XID encoder/decoder and unit testPhilipp2-0/+1805
The SNDCP-XID (or layer-3 xid) is used to exchange layer-3 parameters such as compression. The encoder encodes a bytestream that is then sent as regular XID field from LLC. We will need the SNDCP-XID to negotiate the parameters for our upcomming GPRS data and header compression features Change-Id: If2d63fe2550864cafef3156b1dc0629037c49c1e
2016-09-15Build fixesAlexander Huemer1-1/+3
Some fixes for build environments where dependencies are installed in distinct directories. Change-Id: I38808fd2911747b266ee6fde91187a88dd7ae355
2016-09-15Consistenly format variables in */Makefile.am filesAlexander Huemer1-37/+113
Change-Id: Ifa21513c007072314097b7bec188579972dc1694
2016-09-05gprs/gprs_llc: fix null pointer deref in gprs_llc_rcvmsgAlexander Couzens1-2/+1
Change-Id: I1f7e1d524042134c93a4f3de599c54d442447512
2016-09-05gprs/gsm0408_gprs_force_reattach_oldmsg: check llme before useAlexander Couzens1-1/+2
Change-Id: I9385655872c4dcf46aa1d18bcc47b84aba2f34f7
2016-09-02IuPS: Change GTP-U endpoint to SGSN in PMM_IDLE and page UE when data arrivesDaniel Willmann2-1/+31
Change-Id: I47b73a40cbdda6b7c31fb2767f74f9f93d84056b
2016-09-02IuPS: Introduce function to change PMM stateDaniel Willmann1-6/+29
This is where IuPS will redirect GTP-U endpoints in a subsequent commit. Also add comprehensive logging of pmm_state transitions. Change-Id: I7c2cd1abc1805659b01dffffff31c49fe5161086
2016-09-02IuPS: GMM Attach: reset MM ctx pending_reqDaniel Willmann1-0/+1
Change-Id: I0df0f3d88085939eb617405e2013ad164eed477b
2016-09-02IuPS: sgsn_mm_ctx: add enum gprs_pmm_state field, track PMM stateDaniel Willmann2-0/+7
Iu needs to page to transfer data in PMM-IDLE state. Change-Id: Id37778cb9a0328a21c8e8246998ecdb43dd687d8
2016-09-02IuPS: RA UPD: make sure to authorize, for Iu Integrity ProtectionDaniel Willmann1-4/+7
Change-Id: I2ea2089895f8a8e125ef39d9bef70dafb2b1ce69
2016-09-02IuPS: add GMM Service Request rx and txDaniel Willmann1-0/+199
Change-Id: Ib935de22d23a15f449927840d4d59497ce22abbd
2016-09-02IuPS: send Security Mode Command, track the new_key flag.Daniel Willmann2-0/+14
Change-Id: I0b2593c2df13b79eb36975b0d302e31cfdf8bb09
2016-09-02IuPS: dev hack: init hardcoded Ki on ATT REQDaniel Willmann1-0/+29
DEVELOPMENT HACK: Our current HLR does not support 3G authentication tokens. A new HLR/VLR implementation is being developed. Until it is ready and actual milenage authentication is properly supported, we are hardcoding a fixed Ki and use 2G auth. Change-Id: Ieca45960fa941a3a706c6e479b04b9f2ef89d860
2016-09-01IuPS: add Iu response to delete_pdp_conf()Daniel Willmann1-0/+7
Change-Id: I6d601586101c0a004b2243633fab48db82b44b7c
2016-09-01IuPS: add Iu response to create_pdp_conf()Daniel Willmann2-0/+33
Change-Id: Iad65ca9b77c3166d4df9a58af527e6aef7e589ee
2016-09-01IuPS: redirect Iu in various places, link Iu in sgsn-testDaniel Willmann1-6/+55
In gsm48_gmm_sendmsg(), redirect to iu_tx() for both cases of MM context present or not. In gsm48_rx_gmm_att_req(), compose an MM context marked as Iu for messages coming in from a ue_conn_ctx (passed in msg->dst). Also make sure cid is initialized to avoid introducing a compiler warning. In gsm48_rx_gmm_ra_upd_req(), look up an Iu MM context based on the presence of the ue_conn_ctx in msg->dst. In sgsn-test, add libiu and libasn1c, libosmo-sigtran, libosmo-ranap, which are now needed for an --enable-iu build. Change-Id: Ia47ffbfa6fa0f5a0cd76a379c57ef42faa0d80e3
2016-09-01IuPS: osmo-sgsn: add core IuPS impl, call iu_init()Daniel Willmann5-3/+234
Add main Iu entry points for IuPS: * gsm0408_gprs_rcvmsg_iu() * sgsn_ranap_iu_event() * sgsn_ranap_rab_ass_resp() Add main MM context management for IuPS: * sgsn_mm_ctx_by_ue_ctx() * sgsn_mm_ctx_alloc_iu() Call iu_init() from sgsn_main.c. Add asn_debug impl ("extern" from libasn1c). Initialize asn_debug VTY command (iu_vty_init()). osmo-sgsn build: add libiu and libasn1c, libosmo-sigtran, libosmo-ranap Change-Id: I469ae6ca9ef254d04ee0d2d79bdd65aebcd027b5
2016-08-27IuPS: track msg->dst aka ue_conn_ctx, commentDaniel Willmann1-0/+4
For Iu connections, msg->dst will point to the ue_conn_ctx, and we need to make sure to keep msg->dst intact when copying from/to msgb and from/to MM context. Change-Id: I90c7ca6c3655d447aaca958e0086ae6ce6f6045a
2016-08-27gprs_gmm: Fix bit mask when determining update/attach typeDaniel Willmann1-2/+6
Bit 4 is reserved in 3GPP TS 04.08 so exclude it from the type. In 3GPP TS 24.008 it indicates if a follow-on request is pending by the MS, but only in Iu mode. According to the spec it is not required to react to that request with a follow-on proceed so this field can be ignored for now. See 3GPP TS 24.008 Ch. 4.4: "Unless it has specific permission from the network (follow-on proceed) the mobile station side should await the release of the RR connection used for a MM specific procedure before a new MM specific procedure or MM connection establishment is started." as well as Ch. 4.4.4.6: "If the network wishes to prolong the RR connection to allow the mobile station to initiate MM connection establishment (for example if the mobile station has indicated in the LOCATION UPDATING REQUEST that it has a follow-on request pending) the network shall send "follow on proceed" in the LOCATION UPDATING ACCEPT and start timer T3255." Change-Id: If1dff960c406060e257dafc54132687ffc42ad8f
2016-08-27cosmetic: gprs_sgsn.c: move pdp.h include to topNeels Hofmeyr1-1/+2
Change-Id: I9a9b34d714235462ba72cdb65b7c8c9824dfa9c6
2016-08-27Adding LLC-XID related modifications in LLCPhilipp1-57/+302
With this commit the already existing XID mechanism has been modified to suit the needs for the upcomming SNDCP-XID patches. This commit should not break anything since it does not alter the current behaviour (incoming XID is still just echoed, on GMM-Reset a basic XID message is still echoed) Change-Id: I65b9d625e72d3d61c99abdc7041773701d694d52
2016-08-27Moving grs_sndcp.h header file to includePhilipp4-59/+2
For some reason gprs_sndcp.h is located in src/gprs. This commit moves gprs_sndcp.h to include/openbsc and fixes the include path in gprs_sndcp.c and gprs_sndcp_vty.c Change-Id: If4e4f1252c81d7907c1b4d738c982bb172b128c9
2016-08-27Adding LLC-XID encoder / decoder and unit testPhilipp2-1/+263
The lle-xid encoder/decoder is needed to encode and decode llc xid parameter messages. We need this to exchange sndcp-parameters (SNDCP-XID) and also simple parameters such as encryption IOVs Change-Id: Ia06e4cb08bf9b48c2a4682606d1b1a91d19a9d37
2016-08-27sgsn: add statistics counter for LLC packetsAlexander Couzens2-0/+11
new counters are: llc.dl_bytes llc.ul_bytes llc.dl_packets llc.ul_packets The ip payload bytes are waiting for payload compression because those data are known then. Change-Id: I068376d35e84283cb98523cd3097a12c55cdb709
2016-08-22comment: gsm48_gmm_sendmsg(): add spec reference on encryptableNeels Hofmeyr1-1/+3
Change-Id: I54a3bc518bc38e38b78f6e9ea3705e4fbd5ffb98
2016-07-25fix: create_pdp_conf(): unset reject_cause after unknown ran_typeNeels Hofmeyr1-0/+4
f9f4387686584d4575b326ac7414138d8ba0c641 introduced a check for ran_type, which potentially leaves reject_cause unset. Fix that. Change-Id: I0220841ff796f949d00a1415d46b54a3eacc9493
2016-07-25sgsn: add statistics counter for GPRS and PDP packetsAlexander Couzens3-2/+52
Changing the test to allow still allocated block from the rate counters. Change-Id: Ie30e4c3084ee3a138d6b39bb5000234ac814e65f
2016-07-23gprs_gmm: remove duplicated start of T3395Alexander Couzens1-2/+1
The timer is already scheduled by gsm48_tx_gsm_deact_pdp_req(). Change-Id: I8203b939d2196f87b11c0f3b2b0ff481e572835c
2016-07-17SGSN: fix FCS calculation for encrypted framesDieter Spaar1-4/+10
Change-Id: I352bc9db0c17fff773788831c4389ec0a5a30af8 Related: OS#1582
2016-07-17SGSN: move cipher application to separate functionMax1-41/+42
Split out generation and application of GEA gamma into separate function which can be used for both encryption and decryption. Change-Id: I442f2ead57e40d9bcd24e7f1b261041371595360 Related: OS#1582
2016-07-16SGSN: encrypt/decrypt only necessary framesMax3-31/+44
According to 3GPP TS 24.008 § 4.7.1.2 some GMM frames are not supposed to be ciphered. Propagate information about the necessity for encryption between MM <-> LLC to ensure only proper frames are encrypted/decrypted/dropped. Change-Id: I0358905e60d1b182f75caec81bfcc72bbbbb2aa1 Related: OS#1582
2016-07-16SGSN: add preliminary support for GPRS encryptionMax3-26/+45
It is already functional enough to allow testing with real phones. However, note - there are several limitations in the current implementation: * only default value for IOV-UI is supported at the moment * AUTN-based key material is not supported Related: OS#1582 Change-Id: I8900b906693496e4e6b35be5a86937c58039ed9e
2016-07-16SGSN: split GEA key management from TLLIMax3-18/+32
Move GEA key from TLLI assignment into separate function. Change-Id: I8a0bc907072dc19cd9535a28b5252dc0f05357cc Related: OS#1582
2016-07-16SGSN: use unique AUTH REQ referenceMax2-8/+24
The A&C reference number specified in 3GPP TS 24.008 § 10.5.5.19 identifies particular request sent by network with the related response sent by MS. The value transparently copied from request to response by MS: the spec do not specify what exactly should be in there so we use rand() to decrease chance for collisions. Note: variable named 'rand' clashes with standard function rand() so it was renamed. Change-Id: I3638821a9b4a0532b28dbbb50faa30c4082579f6 Related: OS#1582
2016-07-11SGSN: prevent starting with inconsistent configMax1-3/+14
Previously it was possible to start osmo-sgsn with "auth-policy remote" but without "gsup remote-*" which resulted in broken setup: no MS could perform GPRS ATTACH. Add consistency check to vty code to fix this. Related: OS#1582 Change-Id: Ie4296e7d99d7833f7d828b0196435ea81097cf6e
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