OpenBSC March 2014

openbsc@lists.osmocom.org

27 participants
69 discussions

[PATCH 1/2 openggsn] gtp: fix wrong binary layout for struct gtp0_header in x86_64

by pablo＠gnumonks.org

From: Pablo Neira Ayuso <pablo(a)gnumonks.org> struct gtp0_header needs __attribute__((packed)) to make sure that gcc doesn't add a hole of 4 bytes to align the 64-bits teid, resulting in 24 bytes instead of 20 bytes. This was breaking gtpv0 in my gprs testbed with my x86_64 laptop. While at it, add also attribute packed to other headers just to make sure that gcc doesn't pad the structures with holes. --- If no objections, I'll push this to master. gtp/gtp.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/gtp/gtp.h b/gtp/gtp.h index 54af96e..39a902f 100644 --- a/gtp/gtp.h +++ b/gtp/gtp.h @@ -161,7 +161,7 @@ struct gtp0_header { /* Descriptions from 3GPP 09.60 */ uint8_t spare2; /* 11 Spare */ uint8_t spare3; /* 12 Spare */ uint64_t tid; /* 13 Tunnel ID */ -}; /* 20 */ +} __attribute__((packed)); /* 20 */ struct gtp1_header_short { /* Descriptions from 3GPP 29060 */ uint8_t flags; /* 01 bitfield, with typical values */ @@ -174,7 +174,7 @@ struct gtp1_header_short { /* Descriptions from 3GPP 29060 */ uint8_t type; /* 02 Message type. T-PDU = 0xff */ uint16_t length; /* 03 Length (of IP packet or signalling) */ uint32_t tei; /* 05 - 08 Tunnel Endpoint ID */ -}; +} __attribute__((packed)); struct gtp1_header_long { /* Descriptions from 3GPP 29060 */ uint8_t flags; /* 01 bitfield, with typical values */ @@ -190,7 +190,7 @@ struct gtp1_header_long { /* Descriptions from 3GPP 29060 */ uint16_t seq; /* 10 Sequence Number */ uint8_t npdu; /* 11 N-PDU Number */ uint8_t next; /* 12 Next extension header type. Empty = 0 */ -}; +} __attribute__((packed)); struct gtp0_packet { struct gtp0_header h; -- 1.7.10.4

11 years, 3 months

Location Area Updates missed during calls

by Luca Valtulina

Hi list, when a MS is in a call it misses the network-initiated Location Area Update procedure(s). This inconvenience can lead (if the call ends after the expire_lu time) to having an attached (and active) subscriber marked as expired in the HLR. Furthermore if at this point the MS initiates a new call, the call will be dropped and (as expected) a new Location Area Update procedure will be initiated by the BSC. I find this behavior annoying mostly in scenarios where the T3212 (LAU timer) has been setup to a low value. To tackle this issue I thought of triggering a subscriber update when a call get released (either by the network or by the MS) for each of the MS involved in the call. The code can also be optimized by checking whether the subscriber is expired before performing the update. I can provide a patch if you also consider the above as a misbehavior of OpenBSC. cheers luca

11 years, 3 months

2 OpenBSC moderator request(s) waiting

by openbsc-bounces＠lists.osmocom.org

The OpenBSC(a)lists.osmocom.org mailing list has 2 request(s) waiting for your consideration at: https://lists.osmocom.org/mailman/admindb/openbsc Please attend to this at your earliest convenience. This notice of pending requests, if any, will be sent out daily. Pending posts: From: tlab.tester(a)googlemail.com on Mon Mar 3 13:01:09 2014 Subject: Unsubscribe Cause: Message may contain administrivia From: zielonka.markus(a)googlemail.com on Mon Mar 3 15:16:07 2014 Subject: unsubscribe Cause: Message may contain administrivia

11 years, 3 months

2 OpenBSC moderator request(s) waiting

by openbsc-bounces＠lists.osmocom.org

11 years, 3 months

2 OpenBSC moderator request(s) waiting

by openbsc-bounces＠lists.osmocom.org

11 years, 3 months

2 OpenBSC moderator request(s) waiting

by openbsc-bounces＠lists.osmocom.org

11 years, 3 months

[PATCH] sysmobts: Add a magic number to the hLayer2 to differentiate it

by Holger Hans Peter Freyther

From: Holger Hans Peter Freyther <holger(a)moiji-mobile.com> The DSP/FPGA appears to report bogus PhDataInd with hlayer2 == 0. Currently this would match the TRX==0,TS==0 and SS=0 and then we report bad measurement reports. Add a magic number to the lower eight bit of the hLayer2 to differentiate valid numbers. Addresses: <0004> measurement.c:97 (bts=0,trx=0,ts=0,ss=0) measurement during state: NONE <0004> measurement.c:102 (bts=0,trx=0,ts=0,ss=0) no space for uplink measurement --- src/osmo-bts-sysmo/oml.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/src/osmo-bts-sysmo/oml.c b/src/osmo-bts-sysmo/oml.c index 596680f..7fcd4c6 100644 --- a/src/osmo-bts-sysmo/oml.c +++ b/src/osmo-bts-sysmo/oml.c @@ -704,17 +704,24 @@ err: uint32_t l1if_lchan_to_hLayer(struct gsm_lchan *lchan) { - return (lchan->nr << 8) | (lchan->ts->nr << 16) | (lchan->ts->trx->nr << 24); + return 0xBB + | (lchan->nr << 8) + | (lchan->ts->nr << 16) + | (lchan->ts->trx->nr << 24); } /* obtain a ptr to the lapdm_channel for a given hLayer */ struct gsm_lchan * l1if_hLayer_to_lchan(struct gsm_bts_trx *trx, uint32_t hLayer2) { + uint8_t magic = hLayer2 & 0xff; uint8_t ts_nr = (hLayer2 >> 16) & 0xff; uint8_t lchan_nr = (hLayer2 >> 8)& 0xff; struct gsm_bts_trx_ts *ts; + if (magic != 0xBB) + return NULL; + /* FIXME: if we actually run on the BTS, the 32bit field is large * enough to simply put a pointer inside. */ if (ts_nr >= ARRAY_SIZE(trx->ts)) -- 1.9.0

11 years, 3 months

[PATCH 4/6] sms: Add missing brackets in the relative validity time calculation.

by Alexander Chemeris

-- Regards, Alexander Chemeris. CEO, Fairwaves, Inc. / ООО УмРадио https://fairwaves.co

11 years, 3 months

[PATCH 3/6] sms_test: Introduce tests for SMS Vvalidity time relative and absolute formats.

by Alexander Chemeris

This tests demonstrate issues with the current code. -- Regards, Alexander Chemeris. CEO, Fairwaves, Inc. / ООО УмРадио https://fairwaves.co

11 years, 3 months

[PATCH 2/6] sms_test: Do not crash on logging.

by Alexander Chemeris

-- Regards, Alexander Chemeris. CEO, Fairwaves, Inc. / ООО УмРадио https://fairwaves.co

11 years, 3 months

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OpenBSC March 2014