gsm_data_shared: add structure for decoded parameters of RLC config

this is primarily needed on the BTS side, but we should also use it on
the BSC side and make the parameters VTY-configurable.

2 files changed, 69 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_data_shared.h b/openbsc/include/openbsc/gsm_data_shared.h
index 4b23613c9..b3ea20b9b 100644
--- a/openbsc/include/openbsc/gsm_data_shared.h
+++ b/openbsc/include/openbsc/gsm_data_shared.h
@@ -433,6 +433,50 @@ struct gsm_bts_gprs_nsvc {
 	struct gsm_abis_mo mo;
 };
 
+enum gprs_rlc_par {
+	RLC_T3142,
+	RLC_T3169,
+	RLC_T3191,
+	RLC_T3193,
+	RLC_T3195,
+	RLC_N3101,
+	RLC_N3103,
+	RLC_N3105,
+	CV_COUNTDOWN,
+	T_DL_TBF_EXT,	/* ms */
+	T_UL_TBF_EXT,	/* ms */
+	_NUM_RLC_PAR
+};
+
+enum gprs_cs {
+	GPRS_CS1,
+	GPRS_CS2,
+	GPRS_CS3,
+	GPRS_CS4,
+	GPRS_MCS1,
+	GPRS_MCS2,
+	GPRS_MCS3,
+	GPRS_MCS4,
+	GPRS_MCS5,
+	GPRS_MCS6,
+	GPRS_MCS7,
+	GPRS_MCS8,
+	GPRS_MCS9,
+	_NUM_GRPS_CS
+};
+
+struct gprs_rlc_cfg {
+	uint16_t parameter[_NUM_RLC_PAR];
+	struct {
+		uint16_t repeat_time; /* ms */
+		uint8_t repeat_count;
+	} paging;
+	uint32_t cs_mask; /* bitmask of gprs_cs */
+	uint8_t initial_cs;
+	uint8_t initial_mcs;
+};
+
+
 enum neigh_list_manual_mode {
 	NL_MODE_AUTOMATIC = 0,
 	NL_MODE_MANUAL = 1,
@@ -553,6 +597,7 @@ struct gsm_bts {
 			struct gsm_abis_mo mo;
 			uint16_t bvci;
 			uint8_t timer[11];
+			struct gprs_rlc_cfg rlc_cfg;
 		} cell;
 		struct gsm_bts_gprs_nsvc nsvc[2];
 		uint8_t rac;
diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c
index 06a095e27..9e7b59c9f 100644
--- a/openbsc/src/libcommon/gsm_data_shared.c
+++ b/openbsc/src/libcommon/gsm_data_shared.c
@@ -173,6 +173,28 @@ struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts)
 static const uint8_t bts_nse_timer_default[] = { 3, 3, 3, 3, 30, 3, 10 };
 static const uint8_t bts_cell_timer_default[] =
 				{ 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 };
+static const struct gprs_rlc_cfg rlc_cfg_default = {
+	.parameter = {
+		[RLC_T3142] = 20,
+		[RLC_T3169] = 5,
+		[RLC_T3191] = 5,
+		[RLC_T3193] = 200, /* 10ms */
+		[RLC_T3195] = 5,
+		[RLC_N3101] = 10,
+		[RLC_N3103] = 4,
+		[RLC_N3105] = 8,
+		[CV_COUNTDOWN] = 15,
+		[T_DL_TBF_EXT] = 250 * 10, /* ms */
+		[T_UL_TBF_EXT] = 250 * 10, /* ms */
+	},
+	.paging = {
+		.repeat_time = 5 * 50, /* ms */
+		.repeat_count = 3,
+	},
+	.cs_mask = 0x1fff,
+	.initial_cs = 2,
+	.initial_mcs = 6,
+};
 
 struct gsm_bts *gsm_bts_alloc(void *ctx)
 {
@@ -205,6 +227,8 @@ struct gsm_bts *gsm_bts_alloc(void *ctx)
 		sizeof(bts->gprs.cell.timer));
 	gsm_mo_init(&bts->gprs.cell.mo, bts, NM_OC_GPRS_CELL,
 			bts->nr, 0xff, 0xff);
+	memcpy(&bts->gprs.cell.rlc_cfg, &rlc_cfg_default,
+		sizeof(bts->gprs.cell.rlc_cfg));
 
 	/* create our primary TRX */
 	bts->c0 = gsm_bts_trx_alloc(bts);