dexter has uploaded this change for review.
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
---
M src/osmo-bsc/pcu_sock.c
1 file changed, 123 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/43/31143/1
diff --git a/src/osmo-bsc/pcu_sock.c b/src/osmo-bsc/pcu_sock.c
index 75b4f5d..28fd9a0 100644
--- a/src/osmo-bsc/pcu_sock.c
+++ b/src/osmo-bsc/pcu_sock.c
@@ -298,6 +298,41 @@
pcu_tx_info_ind(bts);
}
+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)
@@ -518,6 +553,90 @@
return rc;
}
+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,
+ 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); \
@@ -542,6 +661,10 @@
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);
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