cbsp: Add enum and value string for Cause

Change-Id: I35592bb4fff2e7b442d0e0cd537b66687862baf2

TODO-RELEASE

@@ -12,3 +12,4 @@ libosmogsm	add struct member	Add codec_list_bss_supported to gsm0808_handover_re
 libosmogb	ABI BREAKAGE		Add reset_ack_notification function pointer to struct bssgp_bvc_fsm_ops
 libosmogsm      add API                 Add rach_tx_integer_raw2val() in gsm_utils.h
 libosmogsm      add API                 iuup.h
+libosmogsm      add API                 cbsp.h enum osmo_cbsp_cause, osmo_cbsp_cause_name(s)

include/osmocom/gsm/cbsp.h

@@ -71,7 +71,7 @@ struct osmo_cbsp_fail_ent {
 	struct llist_head list;		/* entry in a fail_list below */
 	enum CELL_IDENT id_discr;
 	union gsm0808_cell_id_u cell_id;
-	uint8_t cause;
+	uint8_t cause;			/* enum osmo_cbsp_cause */
 };
 
 
@@ -241,6 +241,30 @@ struct osmo_cbsp_error_ind {
 	enum cbsp_channel_ind *channel_ind;
 };
 
+/* 8.2.13 Cause */
+enum osmo_cbsp_cause {
+	OSMO_CBSP_CAUSE_PARAM_NOT_RECOGNISED = 0,
+	OSMO_CBSP_CAUSE_PARAM_VALUE_INVALID,
+	OSMO_CBSP_CAUSE_MSG_REF_NOT_IDENTIFIED,
+	OSMO_CBSP_CAUSE_CELL_ID_NOT_VALID,
+	OSMO_CBSP_CAUSE_UNRECOGNISED_MESSAGE,
+	OSMO_CBSP_CAUSE_MISSING_MANDATORY_ELEMENT,
+	OSMO_CBSP_CAUSE_BSC_CAPACITY_EXCEEDED,
+	OSMO_CBSP_CAUSE_CELL_MEMORY_EXCEEDED,
+	OSMO_CBSP_CAUSE_BSC_MEMORY_EXCEEDED,
+	OSMO_CBSP_CAUSE_CELL_BROADCAST_NOT_SUPPORTED,
+	OSMO_CBSP_CAUSE_CELL_BROADCAST_NOT_OPERATIONAL,
+	OSMO_CBSP_CAUSE_INCOMPATIBLE_DRX_PARAM,
+	OSMO_CBSP_CAUSE_EXT_CHAN_NOT_SUPPORTED,
+	OSMO_CBSP_CAUSE_MSG_REF_ALREADY_USED,
+	OSMO_CBSP_CAUSE_UNSPECIFIED_ERROR,
+	OSMO_CBSP_CAUSE_LAI_OR_LAC_NOT_VALID,
+};
+extern const struct value_string osmo_cbsp_cause_names[];
+static inline const char *osmo_cbsp_cause_name(enum osmo_cbsp_cause cause)
+{
+	return get_value_string(osmo_cbsp_cause_names, cause);
+}
 
 /* decoded CBSP message */
 struct osmo_cbsp_decoded {

src/gsm/cbsp.c

@@ -1477,4 +1477,25 @@ discard_msg:
 	return rc;
 }
 
+/*! value_string[] for enum osmo_cbsp_cause. */
+const struct value_string osmo_cbsp_cause_names[] = {
+	{ OSMO_CBSP_CAUSE_PARAM_NOT_RECOGNISED, "Parameter-not-recognised" },
+	{ OSMO_CBSP_CAUSE_PARAM_VALUE_INVALID, "Parameter-value-invalid" },
+	{ OSMO_CBSP_CAUSE_MSG_REF_NOT_IDENTIFIED, "Message-reference-not-identified" },
+	{ OSMO_CBSP_CAUSE_CELL_ID_NOT_VALID, "Cell-identity-not-valid" },
+	{ OSMO_CBSP_CAUSE_UNRECOGNISED_MESSAGE, "Unrecognised-message" },
+	{ OSMO_CBSP_CAUSE_MISSING_MANDATORY_ELEMENT, "Missing-mandatory-element" },
+	{ OSMO_CBSP_CAUSE_BSC_CAPACITY_EXCEEDED, "BSC-capacity-exceeded" },
+	{ OSMO_CBSP_CAUSE_CELL_MEMORY_EXCEEDED, "Cell-memory-exceeded" },
+	{ OSMO_CBSP_CAUSE_BSC_MEMORY_EXCEEDED, "BSC-memory-exceeded" },
+	{ OSMO_CBSP_CAUSE_CELL_BROADCAST_NOT_SUPPORTED, "Cell-broadcast-not-supported" },
+	{ OSMO_CBSP_CAUSE_CELL_BROADCAST_NOT_OPERATIONAL, "Cell-broadcast-not-operational" },
+	{ OSMO_CBSP_CAUSE_INCOMPATIBLE_DRX_PARAM, "Incompatible-DRX-parameter:"},
+	{ OSMO_CBSP_CAUSE_EXT_CHAN_NOT_SUPPORTED, "Extended-channel-not-supported"},
+	{ OSMO_CBSP_CAUSE_MSG_REF_ALREADY_USED, "Message-reference-already-used"},
+	{ OSMO_CBSP_CAUSE_UNSPECIFIED_ERROR, "Unspecified-error"},
+	{ OSMO_CBSP_CAUSE_LAI_OR_LAC_NOT_VALID, "LAI-or-LAC-not-valid"},
+	{ 0, NULL }
+};
+
 #endif /* HAVE_SYS_SOCKET_H */