gbproxy: Change creation of tlli_info for SGSN originated messages
Currently tlli_info are created for SGSN originated messages when
the SGSN TLLI cannot be found and P-TMSI patching is active. This
doesn't make much sense, since the BSS side TLLI is not known in this
case. Given that the SGSN is working properly, that can only happen
if either the tlli_info has expired or the gbproxy has been
restarted.
This patch disables the creation of a tlli_info in this case.
Note that these messages are passed unmodified to the MS so far.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/tests/gbproxy/gbproxy_test.ok b/openbsc/tests/gbproxy/gbproxy_test.ok
index e00c20c..8e6770a 100644
--- a/openbsc/tests/gbproxy/gbproxy_test.ok
+++ b/openbsc/tests/gbproxy/gbproxy_test.ok
@@ -1626,6 +1626,7 @@
NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
RAID patched (BSS ): 2
RAID patched (SGSN): 1
+ TLLI from SGSN unknown : 1
TLLI-Cache: 0
--- Send message from BSS 1 to SGSN, BVCI 0x1002 ---
@@ -1743,6 +1744,7 @@
RAID patched (SGSN): 2
APN patched : 3
Attach Request count : 1
+ TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI efe2b700 -> efe2b700, IMSI 12131415161718, AGE 0, IMSI matches
@@ -1776,6 +1778,7 @@
RAID patched (SGSN): 2
APN patched : 3
Attach Request count : 1
+ TLLI from SGSN unknown : 1
TLLI-Cache: 0
--- RA update ---
@@ -1821,6 +1824,7 @@
RAID patched (SGSN): 3
APN patched : 4
Attach Request count : 1
+ TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI bbc54679/efe2b700 -> bbc54679/efe2b700, IMSI 12131415161718, AGE 0, IMSI matches
@@ -1843,6 +1847,7 @@
RAID patched (SGSN): 3
APN patched : 4
Attach Request count : 1
+ TLLI from SGSN unknown : 1
TLLI-Cache: 0
--- Bad cases ---
@@ -1881,6 +1886,7 @@
RAID patched (SGSN): 3
APN patched : 4
Attach Request count : 1
+ TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI efe2b700 -> efe2b700, IMSI (none), AGE 0
@@ -2282,8 +2288,8 @@
TLLI patched (BSS ): 8
TLLI patched (SGSN): 6
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI c00f7304/ead4775a -> efe2b700/e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2319,8 +2325,8 @@
TLLI patched (BSS ): 9
TLLI patched (SGSN): 7
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI ead4775a -> e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2344,8 +2350,8 @@
TLLI patched (BSS ): 10
TLLI patched (SGSN): 7
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI ead4775a -> e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2369,8 +2375,8 @@
TLLI patched (BSS ): 11
TLLI patched (SGSN): 7
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI ead4775a -> e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2394,8 +2400,8 @@
TLLI patched (BSS ): 11
TLLI patched (SGSN): 8
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI ead4775a -> e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2463,8 +2469,8 @@
TLLI patched (SGSN): 9
P-TMSI patched (BSS ): 1
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI cache size : 1
TLLI-Cache: 1
TLLI ead4775a -> e0543210, IMSI 12131415161718, AGE 0, IMSI matches
@@ -2489,8 +2495,8 @@
TLLI patched (SGSN): 10
P-TMSI patched (BSS ): 1
P-TMSI patched (SGSN): 2
+ Patch error: other : 1
Attach Request count : 1
- TLLI from SGSN unknown : 1
TLLI-Cache: 0
Gbproxy global:
Invalid Routing Area Identifier : 1