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[chan] Alloc SDCCH for certain reserved types 

Follow notes:
    2.) Allocate a SDCCH for type "LMU"
    2a.)Allocate a SDCCH for the three reserved types
    2b.)Pick LCHAN type none to "ignore" the request
This commit is contained in:
Holger Hans Peter Freyther 2009-11-21 20:20:43 +01:00
parent a8816dd9c7
commit d61654cf54
2 changed files with 19 additions and 0 deletions
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3
openbsc/include/openbsc/gsm_04_08.h
View File

@ -656,6 +656,9 @@ enum chreq_type {
CHREQ_T_PAG_R_ANY_NECI1,
CHREQ_T_PAG_R_TCH_F,
CHREQ_T_PAG_R_TCH_FH,
CHREQ_T_LMU,
CHREQ_T_RESERVED_SDCCH,
CHREQ_T_RESERVED_IGNORE,
};
/* Chapter 11.3 */

16
openbsc/src/gsm_04_08_utils.c
View File

@ -258,6 +258,11 @@ static const struct chreq chreq_type_neci1[] = {
{ 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI1 },
{ 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F },
{ 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH },
{ 0x67, 0xff, CHREQ_T_LMU },
{ 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH },
{ 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH },
{ 0x63, 0xff, CHREQ_T_RESERVED_SDCCH },
{ 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE },
};
/* If SYSTEM INFORMATION TYPE 4 NECI bit == 0 */
@ -270,6 +275,11 @@ static const struct chreq chreq_type_neci0[] = {
{ 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI0 },
{ 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F },
{ 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH },
{ 0x67, 0xff, CHREQ_T_LMU },
{ 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH },
{ 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH },
{ 0x63, 0xff, CHREQ_T_RESERVED_SDCCH },
{ 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE },
};
static const enum gsm_chan_t ctype_by_chreq[] = {
@ -286,6 +296,9 @@ static const enum gsm_chan_t ctype_by_chreq[] = {
[CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_SDCCH,
[CHREQ_T_PAG_R_TCH_F] = GSM_LCHAN_TCH_F,
[CHREQ_T_PAG_R_TCH_FH] = GSM_LCHAN_TCH_F,
[CHREQ_T_LMU] = GSM_LCHAN_SDCCH,
[CHREQ_T_RESERVED_SDCCH] = GSM_LCHAN_SDCCH,
[CHREQ_T_RESERVED_IGNORE] = GSM_LCHAN_UNKNOWN,
};
static const enum gsm_chreq_reason_t reason_by_chreq[] = {
@ -302,6 +315,9 @@ static const enum gsm_chreq_reason_t reason_by_chreq[] = {
[CHREQ_T_PAG_R_ANY_NECI0] = GSM_CHREQ_REASON_PAG,
[CHREQ_T_PAG_R_TCH_F] = GSM_CHREQ_REASON_PAG,
[CHREQ_T_PAG_R_TCH_FH] = GSM_CHREQ_REASON_PAG,
[CHREQ_T_LMU] = GSM_CHREQ_REASON_OTHER,
[CHREQ_T_RESERVED_SDCCH] = GSM_CHREQ_REASON_OTHER,
[CHREQ_T_RESERVED_IGNORE] = GSM_CHREQ_REASON_OTHER,
};
enum gsm_chan_t get_ctype_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci)