gsm0808: Add API to wrap a GSM48 msg with a BSSMAP/DTAP msg.
diff --git a/include/osmocore/gsm0808.h b/include/osmocore/gsm0808.h
index a40713f..9166e54 100644
--- a/include/osmocore/gsm0808.h
+++ b/include/osmocore/gsm0808.h
@@ -36,6 +36,8 @@
uint8_t speech_mode);
struct msgb *gsm0808_create_assignment_failure(uint8_t cause, uint8_t *rr_cause);
+void gsm0808_prepend_dtap_header(struct msgb *msg, uint8_t link_id);
+
const struct tlv_definition *gsm0808_att_tlvdef();
#endif
diff --git a/src/gsm0808.c b/src/gsm0808.c
index 114ddbf..1dc035b 100644
--- a/src/gsm0808.c
+++ b/src/gsm0808.c
@@ -266,6 +266,14 @@
return msg;
}
+void gsm0808_prepend_dtap_header(struct msgb *msg, uint8_t link_id)
+{
+ uint8_t *hh = msgb_push(msg, 3);
+ hh[0] = BSSAP_MSG_DTAP;
+ hh[1] = link_id;
+ hh[2] = msg->len - 3;
+}
+
static const struct tlv_definition bss_att_tlvdef = {
.def = {
[GSM0808_IE_IMSI] = { TLV_TYPE_TLV },