Add libvlr implementation

Original libvlr code is by Harald Welte <laforge@gnumonks.org>,
polished and tweaked by Neels Hofmeyr <nhofmeyr@sysmocom.de>.

This is a long series of trial-and-error development collapsed in one patch.
This may be split in smaller commits if reviewers prefer that. If we can keep
it as one, we have saved ourselves the additional separation work.

Related: OS#1592
Change-Id: Ie303c98f8c18e40c87c1b68474b35de332033622

1 files changed, 18 insertions, 0 deletions

diff --git a/src/libvlr/vlr_lu_fsm.h b/src/libvlr/vlr_lu_fsm.h
new file mode 100644
index 000000000..5cf13c77e
--- /dev/null
+++ b/src/libvlr/vlr_lu_fsm.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <osmocom/core/fsm.h>
+
+enum vlr_lu_state {
+	VLR_ULA_S_IDLE,
+	VLR_ULA_S_WAIT_IMEISV,
+	VLR_ULA_S_WAIT_PVLR,	/* Waiting for ID from PVLR */
+	VLR_ULA_S_WAIT_AUTH,	/* Waiting for Authentication */
+	VLR_ULA_S_WAIT_CIPH,	/* Waiting for Ciphering Complete */
+	VLR_ULA_S_WAIT_IMSI,	/* Waiting for IMSI from MS */
+	VLR_ULA_S_WAIT_HLR_UPD,	/* Waiting for end of HLR update */
+	VLR_ULA_S_WAIT_LU_COMPL,/* Waiting for LU complete */
+	VLR_ULA_S_WAIT_LU_COMPL_STANDALONE, /* Standalone VLR */
+	VLR_ULA_S_DONE
+};
+
+void vlr_lu_fsm_init(void);