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sgsn: Clear LAC/RAC value for the routing area identity 

Clear LAC/RAC with pre-defined value in the RAI.

3GPP 29.060 v7.17.0 section 7.3.1 page 23:

"The SGSN may include the Routeing Area Identity (RAI) of the
SGSN where the MS is registered. The MCC and MNC components shall
be populated with the MCC and MNC, respectively, of the SGSN
where the MS is registered. The LAC and RAC components shall be
populated by the SGSN with the value of 'FFFE' and 'FF',
respectively.”
This commit is contained in:
Holger Hans Peter Freyther 2015-05-17 17:36:23 +02:00
parent 267fd0c7f7
commit 072bee5c85
1 changed files with 5 additions and 1 deletions
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6
openbsc/src/gprs/sgsn_libgtp.c
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@ -120,6 +120,7 @@ struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
uint16_t nsapi,
struct tlv_parsed *tp)
{
struct gprs_ra_id raid;
struct sgsn_pdp_ctx *pctx;
struct pdp_t *pdp;
uint64_t imsi_ui64;
@ -230,7 +231,10 @@ struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
/* Include RAI and ULI all the time */
pdp->rai_given = 1;
pdp->rai.l = 6;
gsm48_construct_ra(pdp->rai.v, &mmctx->ra);
raid = mmctx->ra;
raid.lac = 0xFFFE;
raid.rac = 0xFF;
gsm48_construct_ra(pdp->rai.v, &raid);
pdp->userloc_given = 1;
pdp->userloc.l = 8;