Change in osmo-pcu[master]: Support Gb PAGING-CS

[pespin]

pespin has uploaded this change for review. ( 
https://gerrit.osmocom.org/c/osmo-pcu/+/16537 )


Change subject: Support Gb PAGING-CS
......................................................................

Support Gb PAGING-CS

The paging is sent over PACCH towards MS with an active TBF.

Related: OS#2406
Change-Id: I9501e02e1d7f6944497e724dbccb9a19c3f5221f
---
M src/gprs_bssgp_pcu.cpp
1 file changed, 30 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/37/16537/1

diff --git a/src/gprs_bssgp_pcu.cpp b/src/gprs_bssgp_pcu.cpp
index 67c8653..983c22c 100644
--- a/src/gprs_bssgp_pcu.cpp
+++ b/src/gprs_bssgp_pcu.cpp
@@ -173,6 +173,33 @@
                        ms_class, egprs_ms_class, delay_csec, data, len);
 }

+static int gprs_bssgp_pcu_rx_paging_cs(struct msgb *msg, struct tlv_parsed *tp)
+{
+       uint8_t identity_lv[9];
+       uint8_t *chan_needed = (uint8_t *)TLVP_VAL(tp, BSSGP_IE_CHAN_NEEDED);
+
+       if (TLVP_PRESENT(tp, BSSGP_IE_TMSI)) {
+               identity_lv[0] = TLVP_LEN(tp, BSSGP_IE_TMSI);
+               if (identity_lv[0] >= sizeof(identity_lv)) {
+                       LOGP(DBSSGP, LOGL_NOTICE, "TMSI IE too big (%" PRIu8 
")\n", identity_lv[0]);
+                       return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, 
msg);
+               }
+               memcpy(&identity_lv[1], TLVP_VAL(tp, BSSGP_IE_TMSI), 
identity_lv[0]);
+       } else if (TLVP_PRESENT(tp, BSSGP_IE_IMSI)) { /* Use IMSI if TMSI not 
available: */
+               identity_lv[0] = TLVP_LEN(tp, BSSGP_IE_IMSI);
+               if (identity_lv[0] >= sizeof(identity_lv)) {
+                       LOGP(DBSSGP, LOGL_NOTICE, "IMSI IE too big (%" PRIu8 
")\n", identity_lv[0]);
+                       return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, 
msg);
+               }
+               memcpy(&identity_lv[1], TLVP_VAL(tp, BSSGP_IE_IMSI), 
identity_lv[0]);
+       } else {
+               LOGP(DBSSGP, LOGL_ERROR, "No IMSI\n");
+               return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg);
+       }
+
+       return BTS::main_bts()->add_paging(chan_needed ? *chan_needed : 0, 
identity_lv);
+}
+
 static int gprs_bssgp_pcu_rx_paging_ps(struct msgb *msg, struct tlv_parsed *tp)
 {
        uint8_t identity_lv[9];
@@ -311,6 +338,9 @@
                        the_pcu.bvc_reset = 1;
                bvc_timeout(NULL);
                break;
+       case BSSGP_PDUT_PAGING_CS:
+               gprs_bssgp_pcu_rx_paging_cs(msg, tp);
+               break;
        case BSSGP_PDUT_PAGING_PS:
                gprs_bssgp_pcu_rx_paging_ps(msg, tp);
                break;
@@ -323,7 +353,6 @@
                break;
        case BSSGP_PDUT_SUSPEND_NACK:
        case BSSGP_PDUT_RESUME_NACK:
-       case BSSGP_PDUT_PAGING_CS:
        case BSSGP_PDUT_FLUSH_LL:
        case BSSGP_PDUT_SGSN_INVOKE_TRACE:
                LOGP(DBSSGP, LOGL_INFO, "Rx BSSGP BVCI=%d (SIGN) PDU type %s 
not implemented\n",

--
To view, visit https://gerrit.osmocom.org/c/osmo-pcu/+/16537
To unsubscribe, or for help writing mail filters, visit 
https://gerrit.osmocom.org/settings

Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Change-Id: I9501e02e1d7f6944497e724dbccb9a19c3f5221f
Gerrit-Change-Number: 16537
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pes...@sysmocom.de>
Gerrit-MessageType: newchange