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, 21 insertions, 0 deletions

diff --git a/src/libvlr/vlr_core.h b/src/libvlr/vlr_core.h
new file mode 100644
index 000000000..0e63c7e69
--- /dev/null
+++ b/src/libvlr/vlr_core.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <openbsc/vlr.h>
+
+#define LOGGSUPP(level, gsup, fmt, args...) \
+	LOGP(DVLR, level, "GSUP(%s) " fmt, \
+	     (gsup)->imsi, \
+	     ## args)
+
+#define LOGVSUBP(level, vsub, fmt, args...) \
+	LOGP(DVLR, level, "SUBSCR(%s) " fmt, \
+		vlr_subscr_name(vsub), ## args)
+
+
+const char *vlr_subscr_name(struct vlr_subscr *vsub);
+int vlr_subscr_req_lu(struct vlr_subscr *vsub, bool is_ps);
+int vlr_subscr_req_sai(struct vlr_subscr *vsub, const uint8_t *auts,
+		       const uint8_t *auts_rand);
+struct vlr_subscr *vlr_subscr_alloc(struct vlr_instance *vlr);
+void vlr_subscr_update_tuples(struct vlr_subscr *vsub,
+			      const struct osmo_gsup_message *gsup);