From df13b3ade3f366446033214b3a85228005c014ea Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 5 Sep 2011 06:30:05 +0200
Subject: [PATCH] add config state tracking

---
 config.c    | 12 ++++++++++++
 config.h    |  8 ++++++++
 interface.c |  1 +
 interface.h |  2 ++
 4 files changed, 23 insertions(+)

diff --git a/config.c b/config.c
index 2fba534..31ebb8d 100644
--- a/config.c
+++ b/config.c
@@ -10,6 +10,7 @@ struct uci_context *uci_ctx;
 static struct uci_package *uci_network;
 bool config_init = false;
 static struct blob_buf b;
+static unsigned int config_version = 1;
 
 
 static void uci_attr_to_blob(struct blob_buf *b, const char *str,
@@ -138,6 +139,16 @@ config_parse_bridge_interface(struct uci_section *s)
 	return 0;
 }
 
+void
+config_set_state(struct config_state *state, struct blob_attr *attr)
+{
+	state->data = malloc(blob_pad_len(attr));
+	if (!state->data)
+		return;
+
+	memcpy(state->data, attr, blob_pad_len(attr));
+}
+
 static void
 config_parse_interface(struct uci_section *s)
 {
@@ -163,6 +174,7 @@ config_parse_interface(struct uci_section *s)
 		uci_to_blob(&b, s, iface->proto_handler->config_params);
 
 	proto_init_interface(iface, b.head);
+	iface->config.version = config_version;
 }
 
 void
diff --git a/config.h b/config.h
index 83d7c25..49a81e4 100644
--- a/config.h
+++ b/config.h
@@ -23,4 +23,12 @@ struct config_param_list {
 	const struct config_param_list *next[];
 };
 
+struct config_state {
+	struct blob_attr *data;
+	unsigned int version;
+};
+
+void config_set_state(struct config_state *state, struct blob_attr *attr);
+
+
 #endif
diff --git a/interface.c b/interface.c
index 570e046..2d62bb0 100644
--- a/interface.c
+++ b/interface.c
@@ -238,6 +238,7 @@ interface_alloc(const char *name, struct blob_attr *attr)
 	}
 
 	netifd_ubus_add_interface(iface);
+	config_set_state(&iface->config, attr);
 
 	return iface;
 }
diff --git a/interface.h b/interface.h
index bde069c..0f2eb85 100644
--- a/interface.h
+++ b/interface.h
@@ -46,6 +46,8 @@ struct interface {
 	/* interface that layer 3 communication will go through */
 	struct device_user *l3_iface;
 
+	struct config_state config;
+
 	/* primary protocol state */
 	const struct proto_handler *proto_handler;
 	struct interface_proto_state *proto;
-- 
2.11.0