Support cipher mode reject with extended cause
* add function to generate cipher mode reject with extended (2-byte)
Cause IE
* add function to get (extended) Cause value
* add corresponding (extended cause) test
* update existing (non-extended cause) test
* use enum as a parameter for existing non-extended version to make
interface more unified
Change-Id: Id5509b94a18180a44f45300caaa02b843c166fa3
Related: OS#3187
diff --git a/include/osmocom/gsm/gsm0808.h b/include/osmocom/gsm/gsm0808.h
index 66f7c27..9b19d69 100644
--- a/include/osmocom/gsm/gsm0808.h
+++ b/include/osmocom/gsm/gsm0808.h
@@ -51,6 +51,7 @@
const uint8_t *cipher_response_mode);
struct msgb *gsm0808_create_cipher_complete(struct msgb *layer3, uint8_t alg_id);
struct msgb *gsm0808_create_cipher_reject(enum gsm0808_cause cause);
+struct msgb *gsm0808_create_cipher_reject_ext(enum gsm0808_cause_class class, uint8_t ext);
struct msgb *gsm0808_create_classmark_request();
struct msgb *gsm0808_create_classmark_update(const uint8_t *cm2, uint8_t cm2_len,
const uint8_t *cm3, uint8_t cm3_len);