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osmo-bts-virtual: Generate PRIM_INFO_MEAS (with bogus values) 

The problem is that measurement processing above L1SAP requires/expects
those PRIM_INFO_MEAS indications from the bts specific parts.  Otherwise
it will never generate even uplink-only measurement reports to the BSC,
which is a violation of Abis protocol specs.

Change-Id: I48f73293cb4f0ab4c657dfd00e7ddd032a3c030f
This commit is contained in:
Harald Welte 2018-02-22 10:51:10 +01:00
parent 04719d19b9
commit 22c07d1f1f
1 changed files with 5 additions and 2 deletions
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7
src/osmo-bts-virtual/l1_if.c
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@ -58,6 +58,8 @@ static struct phy_instance *phy_instance_by_arfcn(struct phy_link *plink, uint16
return NULL;
}
static int l1if_process_meas_res(struct gsm_bts_trx *trx, uint8_t tn, uint32_t fn, uint8_t chan_nr,
int n_errors, int n_bits_total, float rssi, float toa);
/**
* Callback to handle incoming messages from the MS.
* The incoming message should be GSM_TAP encapsulated.
@ -146,6 +148,7 @@ static void virt_um_rcv_cb(struct virt_um_inst *vui, struct msgb *msg)
l1sap.u.data.ta_offs_qbits = 0; /* Burst time of arrival in quarter bits. Probably used for Timing Advance calc. Best -> 0 */
l1sap.u.data.lqual_cb = 10 * signal_dbm; /* Link quality in centiBel = 10 * dB. */
l1sap.u.data.pdch_presence_info = PRES_INFO_BOTH;
l1if_process_meas_res(pinst->trx, timeslot, fn, chan_nr, 0, 0, 0, 0);
break;
case GSMTAP_CHANNEL_AGCH:
case GSMTAP_CHANNEL_PCH:
@ -305,8 +308,8 @@ static void l1if_fill_meas_res(struct osmo_phsap_prim *l1sap, uint8_t chan_nr, f
l1sap->u.info.u.meas_ind.inv_rssi = (uint8_t) (rssi * -1);
}
int l1if_process_meas_res(struct gsm_bts_trx *trx, uint8_t tn, uint32_t fn, uint8_t chan_nr,
int n_errors, int n_bits_total, float rssi, float toa)
static int l1if_process_meas_res(struct gsm_bts_trx *trx, uint8_t tn, uint32_t fn, uint8_t chan_nr,
int n_errors, int n_bits_total, float rssi, float toa)
{
struct gsm_lchan *lchan = &trx->ts[tn].lchan[l1sap_chan2ss(chan_nr)];
struct osmo_phsap_prim l1sap;