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-rw-r--r--src/gsm/gsm0808.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/src/gsm/gsm0808.c b/src/gsm/gsm0808.c
index 485e0632..59b16575 100644
--- a/src/gsm/gsm0808.c
+++ b/src/gsm/gsm0808.c
@@ -312,19 +312,24 @@ struct msgb *gsm0808_create_cipher_reject_ext(enum gsm0808_cause_class class, ui
* \param[in] config LCLS Configuration
* \param[in] control LCLS Connection Status Control
* \returns callee-allocated msgb with BSSMAP LCLS NOTIFICATION */
-struct msgb *gsm0808_create_lcls_conn_ctrl(enum gsm0808_lcls_config *config,
- enum gsm0808_lcls_control *control)
+struct msgb *gsm0808_create_lcls_conn_ctrl(enum gsm0808_lcls_config config,
+ enum gsm0808_lcls_control control)
{
- struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
- "bssmap: LCLS CONN CTRL");
+ struct msgb *msg;
+
+ /* According to NOTE 1 in ยง3.2.1.91 at least one of the parameters is required */
+ if (config == GSM0808_LCLS_CFG_NA && control == GSM0808_LCLS_CSC_NA)
+ return NULL;
+
+ msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "bssmap: LCLS CONN CTRL");
if (!msg)
return NULL;
msgb_v_put(msg, BSS_MAP_MSG_LCLS_CONNECT_CTRL);
- if (config)
- msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, *config);
- if (control)
- msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, *control);
+ if (config != GSM0808_LCLS_CFG_NA)
+ msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, config);
+ if (control != GSM0808_LCLS_CSC_NA)
+ msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, control);
msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));
return msg;