diff options
| author | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2016-05-17 23:20:03 +0200 |
|---|---|---|
| committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2016-05-19 20:23:28 +0200 |
| commit | 55101ae00455d0c75a908a6dd4625fc08c0318e7 (patch) | |
| tree | 4c24e739dbb944b1bb8b4123e9daf85d4a0170ac /openbsc/src/libbsc/rest_octets.c | |
| parent | 8b2fcce98481888ed38c9724ed5800a0cbe6e301 (diff) | |
bsc: Create minimal SI6 rest octetssysmocom/201504-stable
In GSM R99 SI6 has mandatory SI6 rest octets and so far we did
not include them. Add minimal support to generate the right band
indicator.
Change-Id: I417a40eb91f42a3416b4e07bb9fb4d7a01aaa36b
Fixes: OS#1698
Related: OS#1725
Diffstat (limited to 'openbsc/src/libbsc/rest_octets.c')
| -rw-r--r-- | openbsc/src/libbsc/rest_octets.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/openbsc/src/libbsc/rest_octets.c b/openbsc/src/libbsc/rest_octets.c index 41bf5050b..7e352e182 100644 --- a/openbsc/src/libbsc/rest_octets.c +++ b/openbsc/src/libbsc/rest_octets.c @@ -187,6 +187,45 @@ int rest_octets_si4(uint8_t *data, const struct gsm48_si_ro_info *si4) return bv.data_len; } + +/* GSM 04.18 ETSI TS 101 503 V8.27.0 (2006-05) + +<SI6 rest octets> ::= +{L | H <PCH and NCH info>} +{L | H <VBS/VGCS options : bit(2)>} +{ < DTM_support : bit == L > I < DTM_support : bit == H > +< RAC : bit (8) > +< MAX_LAPDm : bit (3) > } +< Band indicator > +{ L | H < GPRS_MS_TXPWR_MAX_CCH : bit (5) > } +<implicit spare >; +*/ +int rest_octets_si6(uint8_t *data, int is1800_net) +{ + struct bitvec bv; + + memset(&bv, 0, sizeof(bv)); + bv.data = data; + bv.data_len = 1; + + /* no PCH/NCH info */ + bitvec_set_bit(&bv, L); + /* no VBS/VGCS options */ + bitvec_set_bit(&bv, L); + /* no DTM_support */ + bitvec_set_bit(&bv, L); + /* band indicator */ + if (is1800_net) + bitvec_set_bit(&bv, L); + else + bitvec_set_bit(&bv, H); + /* no GPRS_MS_TXPWR_MAX_CCH */ + bitvec_set_bit(&bv, L); + + bitvec_spare_padding(&bv, 3); + return bv.data_len; +} + /* GPRS Mobile Allocation as per TS 04.60 Chapter 12.10a: < GPRS Mobile Allocation IE > ::= < HSN : bit (6) > |