diff options
| -rw-r--r-- | openbsc/include/openbsc/gprs_bssgp.h | 27 | ||||
| -rw-r--r-- | openbsc/src/gprs/gprs_bssgp.c | 63 |
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); +} |