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-rw-r--r--include/osmocom/sigtran/osmo_ss7.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/osmocom/sigtran/osmo_ss7.h b/include/osmocom/sigtran/osmo_ss7.h
index bbe425c..967912a 100644
--- a/include/osmocom/sigtran/osmo_ss7.h
+++ b/include/osmocom/sigtran/osmo_ss7.h
@@ -26,6 +26,14 @@ int osmo_ss7_pointcode_parse_mask_or_len(struct osmo_ss7_instance *inst, const c
const char *osmo_ss7_pointcode_print(struct osmo_ss7_instance *inst, uint32_t pc);
const char *osmo_ss7_pointcode_print2(struct osmo_ss7_instance *inst, uint32_t pc);
+/* All known point-code formats have a length of or below 24 bit.
+ * A point-code value exceeding that is used to indicate an unset PC. */
+#define OSMO_SS7_PC_INVALID 0xffffffff
+static inline bool osmo_ss7_pc_is_valid(uint32_t pc)
+{
+ return pc <= 0x00ffffff;
+}
+
/***********************************************************************
* SS7 Routing Tables
***********************************************************************/