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-rw-r--r--openbsc/include/openbsc/gprs_bssgp.h27
-rw-r--r--openbsc/src/gprs/gprs_bssgp.c63
2 files changed, 90 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/gprs_bssgp.h b/openbsc/include/openbsc/gprs_bssgp.h
index 9eaf989a..e432cf75 100644
--- a/openbsc/include/openbsc/gprs_bssgp.h
+++ b/openbsc/include/openbsc/gprs_bssgp.h
@@ -199,6 +199,33 @@ static inline int bssgp_tlv_parse(struct tlv_parsed *tp, uint8_t *buf, int len)
return tlv_parse(tp, &tvlv_att_def, buf, len, 0, 0);
}
+enum bssgp_paging_mode {
+ BSSGP_PAGING_PS,
+ BSSGP_PAGING_CS,
+};
+
+enum bssgp_paging_scope {
+ BSSGP_PAGING_BSS_AREA, /* all cells in BSS */
+ BSSGP_PAGING_LOCATION_AREA, /* all cells in LA */
+ BSSGP_PAGING_ROUTEING_AREA, /* all cells in RA */
+ BSSGP_PAGING_BVCI, /* one cell */
+};
+
+struct bssgp_paging_info {
+ enum bssgp_paging_mode mode;
+ enum bssgp_paging_scope scope;
+ struct gprs_ra_id raid;
+ uint16_t bvci;
+ const char *imsi;
+ uint32_t *ptmsi;
+ uint16_t drx_params;
+ uint8_t qos[3];
+};
+
+/* Send a single GMM-PAGING.req to a given NSEI/NS-BVCI */
+int gprs_bssgp_tx_paging(uint16_t nsei, uint16_t ns_bvci,
+ struct bssgp_paging_info *pinfo);
+
/* gprs_bssgp_vty.c */
int gprs_bssgp_vty_init(void);
diff --git a/openbsc/src/gprs/gprs_bssgp.c b/openbsc/src/gprs/gprs_bssgp.c
index c7c49d4b..f27e3a7e 100644
--- a/openbsc/src/gprs/gprs_bssgp.c
+++ b/openbsc/src/gprs/gprs_bssgp.c
@@ -787,3 +787,66 @@ int gprs_bssgp_tx_dl_ud(struct msgb *msg, struct sgsn_mm_ctx *mmctx)
return gprs_ns_sendmsg(bssgp_nsi, msg);
}
+
+/* Send a single GMM-PAGING.req to a given NSEI/NS-BVCI */
+int gprs_bssgp_tx_paging(uint16_t nsei, uint16_t ns_bvci,
+ struct bssgp_paging_info *pinfo)
+{
+ struct msgb *msg = bssgp_msgb_alloc();
+ struct bssgp_normal_hdr *bgph =
+ (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
+ uint16_t drx_params = htons(pinfo->drx_params);
+ uint8_t mi[10];
+ int imsi_len = gsm48_generate_mid_from_imsi(mi, pinfo->imsi);
+ uint8_t ra[6];
+
+ if (imsi_len < 2)
+ return -EINVAL;
+
+ msgb_nsei(msg) = nsei;
+ msgb_bvci(msg) = ns_bvci;
+
+ if (pinfo->mode == BSSGP_PAGING_PS)
+ bgph->pdu_type = BSSGP_PDUT_PAGING_PS;
+ else
+ bgph->pdu_type = BSSGP_PDUT_PAGING_CS;
+ /* IMSI */
+ msgb_tvlv_put(msg, BSSGP_IE_IMSI, imsi_len-2, mi+2);
+ /* DRX Parameters */
+ msgb_tvlv_put(msg, BSSGP_IE_DRX_PARAMS, 2,
+ (uint8_t *) &drx_params);
+ /* Scope */
+ switch (pinfo->scope) {
+ case BSSGP_PAGING_BSS_AREA:
+ {
+ uint8_t null = 0;
+ msgb_tvlv_put(msg, BSSGP_IE_BSS_AREA_ID, 1, &null);
+ }
+ break;
+ case BSSGP_PAGING_LOCATION_AREA:
+ gsm48_construct_ra(ra, &pinfo->raid);
+ msgb_tvlv_put(msg, BSSGP_IE_LOCATION_AREA, 4, ra);
+ break;
+ case BSSGP_PAGING_ROUTEING_AREA:
+ gsm48_construct_ra(ra, &pinfo->raid);
+ msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
+ break;
+ case BSSGP_PAGING_BVCI:
+ {
+ uint16_t bvci = htons(pinfo->bvci);
+ msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *)&bvci);
+ }
+ break;
+ }
+ /* QoS profile mandatory for PS */
+ if (pinfo->mode == BSSGP_PAGING_PS)
+ msgb_tvlv_put(msg, BSSGP_IE_QOS_PROFILE, 3, pinfo->qos);
+
+ /* Optional (P-)TMSI */
+ if (pinfo->ptmsi) {
+ uint32_t ptmsi = htonl(*pinfo->ptmsi);
+ msgb_tvlv_put(msg, BSSGP_IE_TMSI, 4, (uint8_t *) &ptmsi);
+ }
+
+ return gprs_ns_sendmsg(bssgp_nsi, msg);
+}