sgsn/ctrl: Add ctrl interface, implement listing subscribers
Add the control interface with no hierachy right now and implement
the first command to list IMSI + Context Address of active sessions.
sgsn_cmd_handle could share more code with bsc variant.
Fixes: SYS#264, SYS#265
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 5fb7145..31c94f7 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -71,7 +71,7 @@
return apnbuf+1;
}
-static char *gprs_pdpaddr2str(uint8_t *pdpa, uint8_t len)
+char *gprs_pdpaddr2str(uint8_t *pdpa, uint8_t len)
{
static char str[INET6_ADDRSTRLEN + 10];