diff options
Diffstat (limited to 'src/gsm')
| -rw-r--r-- | src/gsm/gsm0808.c | 56 | ||||
| -rw-r--r-- | src/gsm/libosmogsm.map | 1 |
2 files changed, 57 insertions, 0 deletions
diff --git a/src/gsm/gsm0808.c b/src/gsm/gsm0808.c index 2721a1b1..be58939d 100644 --- a/src/gsm/gsm0808.c +++ b/src/gsm/gsm0808.c @@ -238,6 +238,62 @@ struct msgb *gsm0808_create_sapi_reject(uint8_t link_id) return msg; } +struct msgb *gsm0808_create_ass(const struct gsm0808_channel_type *ct, + const uint16_t *cic, + const struct sockaddr_storage *ss, + const struct gsm0808_speech_codec_list *scl, + const uint32_t *ci) +{ + /* See also: 3GPP TS 48.008 3.2.1.1 ASSIGNMENT REQUEST */ + struct msgb *msg; + uint16_t cic_sw; + uint32_t ci_sw; + + /* Mandatory emelent! */ + OSMO_ASSERT(ct); + + msg = + msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, + "bssmap: ass req"); + if (!msg) + return NULL; + + /* Message Type 3.2.2.1 */ + msgb_v_put(msg, BSS_MAP_MSG_ASSIGMENT_RQST); + + /* Channel Type 3.2.2.11 */ + gsm0808_enc_channel_type(msg, ct); + + /* Circuit Identity Code 3.2.2.2 */ + if (cic) { + cic_sw = htons(*cic); + msgb_tv_fixed_put(msg, GSM0808_IE_CIRCUIT_IDENTITY_CODE, + sizeof(cic_sw), (uint8_t *) & cic_sw); + } + + /* AoIP: AoIP Transport Layer Address (MGW) 3.2.2.102 */ + if (ss) { + gsm0808_enc_aoip_trasp_addr(msg, ss); + } + + /* AoIP: Codec List (MSC Preferred) 3.2.2.103 */ + if (scl) + gsm0808_enc_speech_codec_list(msg, scl); + + /* AoIP: Call Identifier 3.2.2.105 */ + if (ci) { + ci_sw = htonl(*ci); + msgb_tv_fixed_put(msg, GSM0808_IE_CALL_ID, sizeof(ci_sw), + (uint8_t *) & ci_sw); + } + + /* push the bssmap header */ + msg->l3h = + msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg)); + + return msg; +} + struct msgb *gsm0808_create_ass_compl(uint8_t rr_cause, uint8_t chosen_channel, uint8_t encr_alg_id, uint8_t speech_mode, const struct sockaddr_storage *ss, diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map index ec234189..a4e6083b 100644 --- a/src/gsm/libosmogsm.map +++ b/src/gsm/libosmogsm.map @@ -124,6 +124,7 @@ gsm0503_mcs9; gsm0808_att_tlvdef; gsm0808_bssap_name; gsm0808_bssmap_name; +gsm0808_create_ass; gsm0808_create_assignment_completed; gsm0808_create_ass_compl; gsm0808_create_assignment_failure; |