pespin has uploaded this change for review.
sbcap: Send Error Indication if decoding rx msg fails
Change-Id: I444290f3d697e7485e04eaa38acd8fc3623e0eab
---
M include/osmocom/cbc/sbcap_msg.h
M include/osmocom/sbcap/sbcap_common.h
M src/sbcap/sbcap_common.c
M src/sbcap_link.c
M src/sbcap_msg.c
5 files changed, 59 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-cbc refs/changes/00/28800/1
diff --git a/include/osmocom/cbc/sbcap_msg.h b/include/osmocom/cbc/sbcap_msg.h
index 1f2c350..882e0b9 100644
--- a/include/osmocom/cbc/sbcap_msg.h
+++ b/include/osmocom/cbc/sbcap_msg.h
@@ -1,6 +1,7 @@
#pragma once
#include <osmocom/core/linuxlist.h>
#include <osmocom/netif/stream.h>
+#include <osmocom/sbcap/sbcap_common.h>
#include "cbc_data.h"
@@ -9,3 +10,4 @@
SBcAP_SBC_AP_PDU_t *sbcap_gen_write_replace_warning_req(void *ctx,const struct cbc_message *cbcmsg);
SBcAP_SBC_AP_PDU_t *sbcap_gen_stop_warning_req(void *ctx, const struct cbc_message *cbcmsg);
+SBcAP_SBC_AP_PDU_t *sbcap_gen_error_ind(void *ctx, SBcAP_Cause_t cause);
diff --git a/include/osmocom/sbcap/sbcap_common.h b/include/osmocom/sbcap/sbcap_common.h
index 795bf25..167e5d1 100644
--- a/include/osmocom/sbcap/sbcap_common.h
+++ b/include/osmocom/sbcap/sbcap_common.h
@@ -146,3 +146,6 @@
SBcAP_Stop_Warning_Request_IEs_t *sbcap_alloc_Stop_Warning_Request_IE(
long id, SBcAP_Criticality_t criticality, SBcAP_Stop_Warning_Request_IEs__value_PR present);
+
+SBcAP_ErrorIndicationIEs_t *sbcap_alloc_Error_Indication_IE(
+ long id, SBcAP_Criticality_t criticality, SBcAP_Stop_Warning_Request_IEs__value_PR present);
diff --git a/src/sbcap/sbcap_common.c b/src/sbcap/sbcap_common.c
index 3968c71..cd22fee 100644
--- a/src/sbcap/sbcap_common.c
+++ b/src/sbcap/sbcap_common.c
@@ -135,3 +135,13 @@
ie->value.present = present;
return ie;
}
+
+SBcAP_ErrorIndicationIEs_t *sbcap_alloc_Error_Indication_IE(
+ long id, SBcAP_Criticality_t criticality, SBcAP_Stop_Warning_Request_IEs__value_PR present)
+{
+ SBcAP_ErrorIndicationIEs_t *ie = CALLOC(1, sizeof(*ie));
+ ie->id = id;
+ ie->criticality = criticality;
+ ie->value.present = present;
+ return ie;
+}
diff --git a/src/sbcap_link.c b/src/sbcap_link.c
index 6459c58..ce59397 100644
--- a/src/sbcap_link.c
+++ b/src/sbcap_link.c
@@ -39,6 +39,7 @@
#include <osmocom/cbc/cbc_data.h>
#include <osmocom/cbc/sbcap_link.h>
#include <osmocom/cbc/sbcap_link_fsm.h>
+#include <osmocom/cbc/sbcap_msg.h>
#include <osmocom/cbc/cbc_peer.h>
#include <osmocom/cbc/debug.h>
@@ -166,6 +167,13 @@
g_cbc->sbcap.mgr->rx_cb(link, pdu);
} else {
LOGPSBCAPC(link, LOGL_ERROR, "Unable to decode %s\n", msgb_hexdump(msg));
+ pdu = sbcap_gen_error_ind(link, SBcAP_Cause_unrecognised_message);
+ if (pdu) {
+ cbc_sbcap_link_tx(link, pdu);
+ } else {
+ LOGPSBCAPC(link, LOGL_ERROR,
+ "Tx SBc-AP Error-Indication: msg gen failed\n");
+ }
}
out:
msgb_free(msg);
diff --git a/src/sbcap_msg.c b/src/sbcap_msg.c
index 735cf8b..55ca0e2 100644
--- a/src/sbcap_msg.c
+++ b/src/sbcap_msg.c
@@ -291,3 +291,39 @@
return pdu;
}
+
+/* generate a SBc-AP ERROR INDICATION, 3GPP TS 29.168 4.3.4.2A.1 */
+SBcAP_SBC_AP_PDU_t *sbcap_gen_error_ind(void *ctx, SBcAP_Cause_t cause)
+{
+ SBcAP_SBC_AP_PDU_t *pdu;
+ SBcAP_ErrorIndicationIEs_t *ie;
+
+ pdu = sbcap_pdu_alloc();
+ if (!pdu)
+ return NULL;
+ pdu->present = SBcAP_SBC_AP_PDU_PR_initiatingMessage;
+ pdu->choice.initiatingMessage.procedureCode = SBcAP_ProcedureId_Error_Indication;
+ pdu->choice.initiatingMessage.criticality = SBcAP_Criticality_ignore;
+ pdu->choice.initiatingMessage.value.present = SBcAP_InitiatingMessage__value_PR_Error_Indication;
+
+ A_SEQUENCE_OF(void) *as_pdu = (void *)&pdu->choice.initiatingMessage.value.choice.Error_Indication.protocolIEs.list;
+
+ /* Cause, Optional:
+ * 3GPP TS 36.413 4.3.4.3.2
+ * static const long asn_VAL_19_SBcAP_id_Cause = 1; */
+ ie = sbcap_alloc_Error_Indication_IE(1, SBcAP_Criticality_ignore,
+ SBcAP_ErrorIndicationIEs__value_PR_Cause);
+ ie->value.choice.Cause = cause;
+ ASN_SEQUENCE_ADD(as_pdu, ie);
+
+#if 0
+ /* Criticality Diagnostics, Optional:
+ * 3GPP TS 36.413 4.3.4.3.3
+ * static const long asn_VAL_20_SBcAP_id_Criticality_Diagnostics = 2; */
+ ie = sbcap_alloc_Error_Indication_IE(1, SBcAP_Criticality_ignore,
+ SBcAP_ErrorIndicationIEs__value_Criticality_Diagnostics);
+ ie->value.choice.Criticality_Diagnostics = ...;
+ ASN_SEQUENCE_ADD(as_pdu, ie);
+#endif
+ return pdu;
+}
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