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pcu_sock: transfer sysinfo to PCU 

The PCU needs to be aware of the current system information in order to
work properly.

Change-Id: Ibbfbfaf588a4e406804c36570010aefdfc14328b
Related: OS#5198
This commit is contained in:
Philipp Maier 2023-02-01 12:50:56 +01:00
parent 8a0572256b
commit f18e9c36f4
1 changed files with 122 additions and 0 deletions
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122
src/osmo-bsc/pcu_sock.c
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@ -298,6 +298,41 @@ __attribute__((weak)) void pcu_info_update(struct gsm_bts *bts)
pcu_tx_info_ind(bts);
}
static int pcu_tx_data_ind(struct gsm_bts_trx_ts *ts, uint8_t sapi, uint32_t fn,
uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len,
int8_t rssi, uint16_t ber10k, int16_t bto, int16_t lqual)
{
struct msgb *msg;
struct gsm_pcu_if *pcu_prim;
struct gsm_pcu_if_data *data_ind;
struct gsm_bts *bts = ts->trx->bts;
LOGP(DPCU, LOGL_DEBUG, "Sending data indication: sapi=%s arfcn=%d block=%d data=%s\n",
sapi_string[sapi], arfcn, block_nr, osmo_hexdump(data, len));
msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_IND, bts->nr);
if (!msg)
return -ENOMEM;
pcu_prim = (struct gsm_pcu_if *) msg->data;
data_ind = &pcu_prim->u.data_ind;
data_ind->sapi = sapi;
data_ind->rssi = rssi;
data_ind->fn = fn;
data_ind->arfcn = arfcn;
data_ind->trx_nr = ts->trx->nr;
data_ind->ts_nr = ts->nr;
data_ind->block_nr = block_nr;
data_ind->ber10k = ber10k;
data_ind->ta_offs_qbits = bto;
data_ind->lqual_cb = lqual;
if (len)
memcpy(data_ind->data, data, len);
data_ind->len = len;
return pcu_sock_send(bts, msg);
}
/* Forward rach indication to PCU */
int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint16_t ra, uint32_t fn,
uint8_t is_11bit, enum ph_burst_type burst_type)
@ -507,6 +542,89 @@ static int pcu_rx_data_req(struct gsm_bts *bts, uint8_t msg_type,
return rc;
}
static int pcu_tx_si(const struct gsm_bts *bts, enum osmo_sysinfo_type si_type, bool enable)
{
/* the SI is per-BTS so it doesn't matter which TRX we use */
struct gsm_bts_trx *trx = bts->c0;
uint8_t si_buf[GSM_MACBLOCK_LEN];
uint8_t len;
int rc;
if (enable) {
memcpy(si_buf, GSM_BTS_SI(bts, si_type), GSM_MACBLOCK_LEN);
len = GSM_MACBLOCK_LEN;
LOGP(DPCU, LOGL_DEBUG, "Updating SI%s to PCU: %s\n",
get_value_string(osmo_sitype_strs, si_type),
osmo_hexdump_nospc(si_buf, GSM_MACBLOCK_LEN));
} else {
si_buf[0] = si_type;
len = 1;
/* Note: SI13 is the only system information type that is revked
* by just sending a completely empty message. This is due to
* historical reasons */
if (si_type != SYSINFO_TYPE_13)
len = 0;
LOGP(DPCU, LOGL_DEBUG, "Revoking SI%s from PCU\n",
get_value_string(osmo_sitype_strs, si_buf[0]));
}
/* The low-level data like FN, ARFCN etc will be ignored but we have to
* set lqual high enough to bypass the check at lower levels */
rc = pcu_tx_data_ind(&trx->ts[0], PCU_IF_SAPI_BCCH, 0, 0, 0, si_buf, len,
0, 0, 0, INT16_MAX);
if (rc < 0)
LOGP(DPCU, LOGL_NOTICE, "Failed to send SI%s to PCU: rc=%d\n",
get_value_string(osmo_sitype_strs, si_type), rc);
return rc;
}
static int pcu_tx_si_all(struct gsm_bts *bts)
{
const enum osmo_sysinfo_type si_types[] = { SYSINFO_TYPE_1, SYSINFO_TYPE_2, SYSINFO_TYPE_3, SYSINFO_TYPE_13 };
unsigned int i;
int rc = 0;
for (i = 0; i < ARRAY_SIZE(si_types); i++) {
if (GSM_BTS_HAS_SI(bts, si_types[i])) {
rc = pcu_tx_si(bts, si_types[i], true);
if (rc < 0)
return rc;
} else {
LOGP(DPCU, LOGL_INFO,
"SI%s is not available on PCU connection\n",
get_value_string(osmo_sitype_strs, si_types[i]));
}
}
return 0;
}
static int pcu_rx_txt_ind(struct gsm_bts *bts,
const struct gsm_pcu_if_txt_ind *txt)
{
int rc;
switch (txt->type) {
case PCU_VERSION:
LOGP(DPCU, LOGL_INFO, "OsmoPCU version %s connected\n",
txt->text);
rc = pcu_tx_si_all(bts);
if (rc < 0)
return -EINVAL;
break;
default:
LOGP(DPCU, LOGL_ERROR, "Unknown TXT_IND type %u received\n",
txt->type);
return -EINVAL;
}
return 0;
}
#define CHECK_IF_MSG_SIZE(prim_len, prim_msg) \
do { \
size_t _len = PCUIF_HDR_SIZE + sizeof(prim_msg); \
@ -531,6 +649,10 @@ static int pcu_rx(struct gsm_network *net, uint8_t msg_type,
CHECK_IF_MSG_SIZE(prim_len, pcu_prim->u.data_req);
rc = pcu_rx_data_req(bts, msg_type, &pcu_prim->u.data_req);
break;
case PCU_IF_MSG_TXT_IND:
CHECK_IF_MSG_SIZE(prim_len, pcu_prim->u.txt_ind);
rc = pcu_rx_txt_ind(bts, &pcu_prim->u.txt_ind);
break;
default:
LOGP(DPCU, LOGL_ERROR, "Received unknown PCU msg type %d\n",
msg_type);