From 5e43781680f9f55e0ae7c1b681465d64882e3b8c Mon Sep 17 00:00:00 2001
From: Steven Barth <steven@midlink.org>
Date: Wed, 27 Nov 2013 14:52:31 +0100
Subject: [PATCH] IPv6: add class support to regular IPv6 addresses

---
 interface-ip.c          | 1 +
 interface-ip.h          | 1 +
 proto.c                 | 5 +++++
 scripts/netifd-proto.sh | 6 +++++-
 ubus.c                  | 3 +++
 5 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/interface-ip.c b/interface-ip.c
index 084688c..4edae2e 100644
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -578,6 +578,7 @@ interface_update_proto_addr(struct vlist_tree *tree,
 
 			system_del_address(dev, a_old);
 		}
+		free(a_old->pclass);
 		free(a_old);
 	}
 
diff --git a/interface-ip.h b/interface-ip.h
index b36c515..2559bcc 100644
--- a/interface-ip.h
+++ b/interface-ip.h
@@ -85,6 +85,7 @@ struct device_addr {
 	/* ipv6 only */
 	time_t valid_until;
 	time_t preferred_until;
+	char *pclass;
 
 	/* must be last */
 	enum device_addr_flags flags;
diff --git a/proto.c b/proto.c
index d5e99bf..9121918 100644
--- a/proto.c
+++ b/proto.c
@@ -69,6 +69,7 @@ enum {
 	ADDR_PREFERRED,
 	ADDR_VALID,
 	ADDR_OFFLINK,
+	ADDR_CLASS,
 	__ADDR_MAX
 };
 
@@ -80,6 +81,7 @@ static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
 	[ADDR_PREFERRED] = { .name = "preferred", .type = BLOBMSG_TYPE_INT32 },
 	[ADDR_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
 	[ADDR_OFFLINK] = { .name = "offlink", .type = BLOBMSG_TYPE_BOOL },
+	[ADDR_CLASS] = { .name = "class", .type = BLOBMSG_TYPE_STRING },
 };
 
 static struct device_addr *
@@ -208,6 +210,9 @@ parse_address_item(struct blob_attr *attr, bool v6, bool ext)
 			else if (addr->preferred_until > addr->valid_until)
 				goto error;
 		}
+
+		if ((cur = tb[ADDR_CLASS]))
+			addr->pclass = strdup(blobmsg_get_string(cur));
 	}
 
 	return addr;
diff --git a/scripts/netifd-proto.sh b/scripts/netifd-proto.sh
index 9f062d8..7f08b1d 100644
--- a/scripts/netifd-proto.sh
+++ b/scripts/netifd-proto.sh
@@ -106,8 +106,9 @@ proto_add_ipv6_address() {
 	local preferred="$3"
 	local valid="$4"
 	local offlink="$5"
+	local class="$6"
 
-	append PROTO_IP6ADDR "$address/$mask/$preferred/$valid/$offlink"
+	append PROTO_IP6ADDR "$address/$mask/$preferred/$valid/$offlink/$class"
 }
 
 proto_add_ipv4_route() {
@@ -175,6 +176,8 @@ _proto_push_ipv6_addr() {
 	valid="${str%%/*}"
 	str="${str#*/}"
 	offlink="${str%%/*}"
+	str="${str#*/}"
+	class="${str%%/*}"
 
 	json_add_object ""
 	json_add_string ipaddr "$address"
@@ -182,6 +185,7 @@ _proto_push_ipv6_addr() {
 	[ -n "$preferred" ] && json_add_int preferred "$preferred"
 	[ -n "$valid" ] && json_add_int valid "$valid"
 	[ -n "$offlink" ] && json_add_boolean offlink "$offlink"
+	[ -n "$class" ] && json_add_string class "$class"
 	json_close_object
 }
 
diff --git a/ubus.c b/ubus.c
index 9063680..340a8e4 100644
--- a/ubus.c
+++ b/ubus.c
@@ -441,6 +441,9 @@ interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 		if (addr->valid_until)
 			blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 
+		if (addr->pclass)
+			blobmsg_add_string(&b, "class", addr->pclass);
+
 		blobmsg_close_table(&b, a);
 	}
 }
-- 
2.30.2