diff options
Diffstat (limited to 'openbsc/src')
| -rw-r--r-- | openbsc/src/gprs/gprs_bssgp.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/openbsc/src/gprs/gprs_bssgp.c b/openbsc/src/gprs/gprs_bssgp.c index fa994514..ea1f9f88 100644 --- a/openbsc/src/gprs/gprs_bssgp.c +++ b/openbsc/src/gprs/gprs_bssgp.c @@ -129,6 +129,96 @@ static int bssgp_tx_fc_bvc_ack(uint16_t nsei, uint8_t tag, uint16_t ns_bvci) return gprs_ns_sendmsg(bssgp_nsi, msg); } +/* 10.3.7 SUSPEND-ACK PDU */ +int bssgp_tx_suspend_ack(uint16_t nsei, uint32_t tlli, + const struct gprs_ra_id *ra_id, uint8_t suspend_ref) +{ + struct msgb *msg = bssgp_msgb_alloc(); + struct bssgp_normal_hdr *bgph = + (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); + uint32_t _tlli; + uint8_t ra[6]; + + msgb_nsei(msg) = nsei; + msgb_bvci(msg) = 0; /* Signalling */ + bgph->pdu_type = BSSGP_PDUT_SUSPEND_ACK; + + _tlli = htonl(tlli); + msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli); + gsm48_construct_ra(ra, ra_id); + msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra); + msgb_tvlv_put(msg, BSSGP_IE_SUSPEND_REF_NR, 1, &suspend_ref); + + return gprs_ns_sendmsg(bssgp_nsi, msg); +} + +/* 10.3.8 SUSPEND-NACK PDU */ +int bssgp_tx_suspend_nack(uint16_t nsei, uint32_t tlli, + uint8_t *cause) +{ + struct msgb *msg = bssgp_msgb_alloc(); + struct bssgp_normal_hdr *bgph = + (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); + uint32_t _tlli; + + msgb_nsei(msg) = nsei; + msgb_bvci(msg) = 0; /* Signalling */ + bgph->pdu_type = BSSGP_PDUT_SUSPEND_NACK; + + _tlli = htonl(tlli); + msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli); + if (cause) + msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, cause); + + return gprs_ns_sendmsg(bssgp_nsi, msg); +} + +/* 10.3.10 RESUME-ACK PDU */ +int bssgp_tx_resume_ack(uint16_t nsei, uint32_t tlli, + const struct gprs_ra_id *ra_id) +{ + struct msgb *msg = bssgp_msgb_alloc(); + struct bssgp_normal_hdr *bgph = + (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); + uint32_t _tlli; + uint8_t ra[6]; + + msgb_nsei(msg) = nsei; + msgb_bvci(msg) = 0; /* Signalling */ + bgph->pdu_type = BSSGP_PDUT_RESUME_ACK; + + _tlli = htonl(tlli); + msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli); + gsm48_construct_ra(ra, ra_id); + msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra); + + return gprs_ns_sendmsg(bssgp_nsi, msg); +} + +/* 10.3.11 RESUME-NACK PDU */ +int bssgp_tx_resume_nack(uint16_t nsei, uint32_t tlli, + const struct gprs_ra_id *ra_id, uint8_t *cause) +{ + struct msgb *msg = bssgp_msgb_alloc(); + struct bssgp_normal_hdr *bgph = + (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph)); + uint32_t _tlli; + uint8_t ra[6]; + + msgb_nsei(msg) = nsei; + msgb_bvci(msg) = 0; /* Signalling */ + bgph->pdu_type = BSSGP_PDUT_SUSPEND_NACK; + + _tlli = htonl(tlli); + msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli); + gsm48_construct_ra(ra, ra_id); + msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra); + if (cause) + msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, cause); + + return gprs_ns_sendmsg(bssgp_nsi, msg); +} + uint16_t bssgp_parse_cell_id(struct gprs_ra_id *raid, const uint8_t *buf) { /* 6 octets RAC */ @@ -267,6 +357,8 @@ static int bssgp_rx_suspend(struct msgb *msg, struct tlv_parsed *tp, { struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); + struct gprs_ra_id raid; + uint32_t tlli; DEBUGP(DBSSGP, "BSSGP SUSPEND\n"); @@ -274,8 +366,13 @@ static int bssgp_rx_suspend(struct msgb *msg, struct tlv_parsed *tp, !TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA)) return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); + tlli = ntohl(*(uint32_t *)TLVP_VAL(tp, BSSGP_IE_TLLI)); + gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA)); + /* FIXME: pass the SUSPEND request to GMM */ /* SEND SUSPEND_ACK or SUSPEND_NACK */ + bssgp_tx_suspend_ack(msgb_nsei(msg), tlli, &raid, 0); + return 0; } @@ -284,6 +381,8 @@ static int bssgp_rx_resume(struct msgb *msg, struct tlv_parsed *tp, { struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); + struct gprs_ra_id raid; + uint32_t tlli; DEBUGP(DBSSGP, "BSSGP RESUME\n"); @@ -292,8 +391,12 @@ static int bssgp_rx_resume(struct msgb *msg, struct tlv_parsed *tp, !TLVP_PRESENT(tp, BSSGP_IE_SUSPEND_REF_NR)) return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); + tlli = ntohl(*(uint32_t *)TLVP_VAL(tp, BSSGP_IE_TLLI)); + gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA)); + /* FIXME: pass the RESUME request to GMM */ /* SEND RESUME_ACK or RESUME_NACK */ + bssgp_tx_resume_ack(msgb_nsei(msg), tlli, &raid); return 0; } |