pespin has submitted this change. (
https://gerrit.osmocom.org/c/osmo-bsc/+/33610 )
(
5 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted
one.
)Change subject: ASCI: Add encoding of VGCS/VBS A-interface messages
......................................................................
ASCI: Add encoding of VGCS/VBS A-interface messages
Change-Id: Ic2203a5119a226ac859a91dc42d81cbd71027ec8
Related: OS#4852
---
M src/osmo-bsc/osmo_bsc_bssap.c
1 file changed, 188 insertions(+), 0 deletions(-)
Approvals:
pespin: Looks good to me, but someone else must approve
laforge: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/src/osmo-bsc/osmo_bsc_bssap.c b/src/osmo-bsc/osmo_bsc_bssap.c
index 096a835..8a999a6 100644
--- a/src/osmo-bsc/osmo_bsc_bssap.c
+++ b/src/osmo-bsc/osmo_bsc_bssap.c
@@ -49,6 +49,7 @@
#include <osmocom/core/sockaddr_str.h>
#include <osmocom/bsc/lcs_loc_req.h>
#include <osmocom/bsc/bssmap_reset.h>
+#include <osmocom/bsc/assignment_fsm.h>
#define IP_V4_ADDR_LEN 4
@@ -1741,3 +1742,180 @@
LOG_HO(conn, LOGL_ERROR, "Cannot send BSSMAP Handover Failure
message (rc=%d %s)\n",
rc, strerror(-rc));
}
+
+/* Send SETUP ACKNOWLEDGE to MSC. */
+void bsc_tx_setup_ack(struct gsm_subscriber_connection *conn, struct
gsm0808_vgcs_feature_flags *ff)
+{
+ struct msgb *resp;
+ struct gsm0808_vgcs_vbs_setup_ack sa = {};
+
+ if (ff) {
+ sa.vgcs_feature_flags_present = true;
+ sa.flags = *ff;
+ }
+ resp = gsm0808_create_vgcs_vbs_setup_ack(&sa);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_VGCS_VBS_SETUP_ACK));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send SETUP REFUSE to MSC. */
+void bsc_tx_setup_refuse(struct gsm_subscriber_connection *conn, uint8_t cause)
+{
+ struct msgb *resp;
+ resp = gsm0808_create_vgcs_vbs_setup_refuse(cause);
+
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_VGCS_VBS_SETUP_REFUSE));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send ASSIGNMENT FAILURE to MSC. */
+void bsc_tx_vgcs_vbs_assignment_fail(struct gsm_subscriber_connection *conn,
uint8_t cause)
+{
+ struct msgb *resp;
+ struct gsm0808_vgcs_vbs_assign_fail af = {
+ .cause = cause,
+ };
+
+ resp = gsm0808_create_vgcs_vbs_assign_fail(&af);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_VGCS_VBS_ASSIGN_FAIL));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send ASSIGNMENT RESULT to MSC. */
+void bsc_tx_vgcs_vbs_assignment_result(struct gsm_subscriber_connection *conn,
struct gsm0808_channel_type *ct,
+ struct gsm0808_cell_id *ci, uint32_t
call_id)
+{
+ struct gsm_lchan *lchan = conn->lchan;
+ struct msgb *resp;
+ struct gsm0808_vgcs_vbs_assign_res ar = {
+ .channel_type = *ct,
+ .cell_identifier = *ci,
+ };
+ int perm_spch;
+ uint8_t osmux_cid;
+
+ /* Chosen Channel */
+ ar.chosen_channel = gsm0808_chosen_channel(lchan->type,
lchan->current_ch_mode_rate.chan_mode);
+ if (!ar.chosen_channel) {
+ LOGP(DMSC, LOGL_ERROR, "Unable to compose Chosen Channel for
mode=%s type=%s",
+ get_value_string(gsm48_chan_mode_names,
lchan->current_ch_mode_rate.chan_mode),
+ gsm_chan_t_name(lchan->type));
+ bsc_tx_vgcs_vbs_assignment_fail(conn,
GSM0808_CAUSE_EQUIPMENT_FAILURE);
+ return;
+ }
+ ar.chosen_channel_present = true;
+
+ /* Generate RTP related fields. */
+ if (gscon_is_aoip(conn)) {
+ /* AoIP Transport Layer Address (BSS) */
+ if
(!osmo_mgcpc_ep_ci_get_crcx_info_to_sockaddr(conn->user_plane.mgw_endpoint_ci_msc,
+
&ar.aoip_transport_layer)) {
+ LOGP(DMSC, LOGL_ERROR, "Unable to compose RTP address
of MGW -> MSC");
+ bsc_tx_vgcs_vbs_assignment_fail(conn,
GSM0808_CAUSE_EQUIPMENT_FAILURE);
+ return;
+ }
+ ar.aoip_transport_layer_present = true;
+
+ /* Call Identifier */
+ ar.call_id = call_id;
+ ar.call_id_present = true;
+
+ /* Osmux */
+ if (conn->assignment.req.use_osmux) {
+ if
(!osmo_mgcpc_ep_ci_get_crcx_info_to_osmux_cid(conn->user_plane.mgw_endpoint_ci_msc,
+
&osmux_cid)) {
+ LOGP(DMSC, LOGL_ERROR, "Unable to compose Osmux
CID of MGW -> MSC");
+ bsc_tx_vgcs_vbs_assignment_fail(conn,
GSM0808_CAUSE_EQUIPMENT_FAILURE);
+ return;
+ }
+ }
+
+ /* Extrapolate speech codec from speech mode */
+ perm_spch = gsm0808_permitted_speech(lchan->type,
lchan->current_ch_mode_rate.chan_mode);
+ gsm0808_speech_codec_from_chan_type(&ar.codec_msc_chosen,
perm_spch);
+ ar.codec_msc_chosen.cfg =
conn->lchan->current_ch_mode_rate.s15_s0;
+ ar.codec_present = true;
+ }
+
+ resp = gsm0808_create_vgcs_vbs_assign_res(&ar);
+ OSMO_ASSERT(resp);
+ if (conn->assignment.req.use_osmux)
+ bssap_extend_osmux(resp, osmux_cid);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_VGCS_VBS_ASSIGN_RESULT));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send UPLINK REQUEST to MSC. */
+void bsc_tx_uplink_req(struct gsm_subscriber_connection *conn)
+{
+ struct msgb *resp;
+ struct gsm0808_uplink_request ur = {};
+
+ resp = gsm0808_create_uplink_request(&ur);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_UPLINK_RQST));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send UPLINK REQUEST CONFIRMATION to MSC. */
+void bsc_tx_uplink_req_conf(struct gsm_subscriber_connection *conn, struct
gsm0808_cell_id *ci, uint8_t *l3_info,
+ uint8_t length)
+{
+ struct msgb *resp;
+ struct gsm0808_uplink_request_cnf ur = {
+ .cell_identifier = *ci,
+ };
+
+ OSMO_ASSERT(length <= LAYER_3_INFORMATION_MAXLEN);
+ if (length) {
+ memcpy(ur.l3.l3, l3_info, length);
+ ur.l3.l3_len = length;
+ }
+ resp = gsm0808_create_uplink_request_cnf(&ur);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_UPLINK_RQST_CONFIRMATION));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send UPLINK APPLICATION DATA to MSC. */
+void bsc_tx_uplink_app_data(struct gsm_subscriber_connection *conn, struct
gsm0808_cell_id *ci, uint8_t *l3_info,
+ uint8_t length)
+{
+ struct msgb *resp;
+ struct gsm0808_uplink_app_data ad = {
+ .cell_identifier = *ci,
+ };
+
+ OSMO_ASSERT(length <= LAYER_3_INFORMATION_MAXLEN);
+ memcpy(ad.l3.l3, l3_info, length);
+ ad.l3.l3_len = length;
+ resp = gsm0808_create_uplink_app_data(&ad);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_UPLINK_APP_DATA));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
+
+/* Send UPLINK RELEASE INDICATION to MSC. */
+void bsc_tx_uplink_release_ind(struct gsm_subscriber_connection *conn, uint8_t
cause)
+{
+ struct msgb *resp;
+ struct gsm0808_uplink_release_ind ri = {
+ .cause = cause,
+ };
+
+ resp = gsm0808_create_uplink_release_ind(&ri);
+ OSMO_ASSERT(resp);
+
+ rate_ctr_inc(rate_ctr_group_get_ctr(conn->sccp.msc->msc_ctrs,
MSC_CTR_BSSMAP_TX_DT1_UPLINK_RELEASE_INDICATION));
+ osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_TX_SCCP, resp);
+}
--
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Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Change-Id: Ic2203a5119a226ac859a91dc42d81cbd71027ec8
Gerrit-Change-Number: 33610
Gerrit-PatchSet: 6
Gerrit-Owner: jolly <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <[email protected]>
Gerrit-Reviewer: pespin <[email protected]>
Gerrit-MessageType: merged
