gbproxy: Use pointer to PTMSI value instead of MI
Currently, ptmsi_enc and new_ptmsi_enc point to the beginning of the
mobile identity. Since all P-TMSI in 04.08 (MM) are encoded this way (1
byte header + 4 byte P-TMSI value). This is different to the P-TMSI
encoding in 08.18 (BSSGP), where the P-TMSI is encoded into 4 byte
without MI header.
This patch changes the code to use pointers to the P-TMSI value,
which is encoded in the same way in both specifications.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/gprs/gprs_utils.c b/openbsc/src/gprs/gprs_utils.c
index c620454..0cf8e4f 100644
--- a/openbsc/src/gprs/gprs_utils.c
+++ b/openbsc/src/gprs/gprs_utils.c
@@ -209,3 +209,11 @@
return 1;
}
+void gprs_parse_tmsi(const uint8_t *value, uint32_t *tmsi)
+{
+ uint32_t tmsi_be;
+
+ memcpy(&tmsi_be, value, sizeof(tmsi_be));
+
+ *tmsi = ntohl(tmsi_be);
+}