sms: Increment the RP Message Reference for each transaction
Each RP-DATA should have a unique msg reference. Currently 42 is
used for all of these. Remember the last reference we used and
increment it on the next SMS. Do not track if the reference is
still in use a clash is a lot less likely now. First unless SMPP
is used only one SMS is delivered at a time, second the transaction
space is a lot smaller than the one for the reference.
diff --git a/openbsc/tests/gsm0408/gsm0408_test.ok b/openbsc/tests/gsm0408/gsm0408_test.ok
index 3d3c4e6..058563a 100644
--- a/openbsc/tests/gsm0408/gsm0408_test.ok
+++ b/openbsc/tests/gsm0408/gsm0408_test.ok
@@ -58,4 +58,8 @@
Random range test: range 255, max num ARFCNs 22
Random range test: range 511, max num ARFCNs 18
Random range test: range 1023, max num ARFCNs 16
+testing RP-Reference wrap
+Allocated reference: 255
+Allocated reference: 0
+Allocated reference: 1
Done.