vty: add ctrl section for Control interface bind address
This may seem like overkill for a mere const char * config item, but it makes
the Control interface VTY commands reusable in any main() scope (inspired by
libosmo-abis' VTY config).
Add API functions ctrl_vty_init() and ctrl_vty_get_bind_addr(), in new files
src/ctrl/control_vty.c and include/osmocom/ctrl/control_vty.h, compiled and/or
installed dependent on ENABLE_VTY.
Using these functions allows configuring a static const char* with the VTY
commands
ctrl
bind A.B.C.D
which callers shall subsequently use to bind the Control interface to a
specific local interface address, by passing the return value of
ctrl_vty_get_bind_addr() to control_interface_setup().
Add CTRL_NODE to enum node_type, "eating" RESERVED4_NODE to heed that comment
on avoiding ABI changes.
diff --git a/include/osmocom/ctrl/control_vty.h b/include/osmocom/ctrl/control_vty.h
new file mode 100644
index 0000000..d0ef69f
--- /dev/null
+++ b/include/osmocom/ctrl/control_vty.h
@@ -0,0 +1,9 @@
+#pragma once
+
+/* Add the 'ctrl' section to VTY, containing the 'bind' command. */
+int ctrl_vty_init(void *ctx);
+
+/* Obtain the IP address configured by the 'ctrl'/'bind A.B.C.D' VTY command.
+ * This should be fed to ctrl_interface_setup() once the configuration has been
+ * read. */
+const char *ctrl_vty_get_bind_addr(void);
diff --git a/include/osmocom/vty/command.h b/include/osmocom/vty/command.h
index 2078e1b..9a02575 100644
--- a/include/osmocom/vty/command.h
+++ b/include/osmocom/vty/command.h
@@ -83,6 +83,7 @@
L_IPA_NODE, /*!< \brief IPA proxying commands in libosmo-abis. */
L_NS_NODE, /*!< \brief NS node in libosmo-gb. */
L_BSSGP_NODE, /*!< \brief BSSGP node in libosmo-gb. */
+ L_CTRL_NODE, /*!< \brief Control interface node. */
/*
* When adding new nodes to the libosmocore project, these nodes can be
@@ -91,7 +92,6 @@
RESERVED1_NODE, /*!< \brief Reserved for later extensions */
RESERVED2_NODE, /*!< \brief Reserved for later extensions */
RESERVED3_NODE, /*!< \brief Reserved for later extensions */
- RESERVED4_NODE, /*!< \brief Reserved for later extensions */
_LAST_OSMOVTY_NODE
};