From 1466967ffa3e408b709d5e84932616787b2853ac Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 22 Jan 2012 19:09:50 +0100
Subject: [PATCH] show mtu, macaddr and txqueuelen from cached device settings

---
 device.c       | 27 +++++++++++++++++++++++++++
 system-linux.c |  2 --
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/device.c b/device.c
index f5a719a..84e6528 100644
--- a/device.c
+++ b/device.c
@@ -175,6 +175,22 @@ static const struct device_type alias_device_type = {
 	.free = alias_device_free,
 };
 
+static void
+device_merge_settings(struct device *dev, struct device_settings *n)
+{
+	struct device_settings *os = &dev->orig_settings;
+	struct device_settings *s = &dev->settings;
+
+	memset(n, 0, sizeof(*n));
+	n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
+	n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
+		s->txqueuelen : os->txqueuelen;
+	memcpy(n->macaddr,
+		(s->flags & DEV_OPT_MACADDR ? s->macaddr : os->macaddr),
+		sizeof(n->macaddr));
+	n->flags = s->flags | os->flags;
+}
+
 void
 device_init_settings(struct device *dev, struct blob_attr **tb)
 {
@@ -652,6 +668,7 @@ device_create(const char *name, const struct device_type *type,
 void
 device_dump_status(struct blob_buf *b, struct device *dev)
 {
+	struct device_settings st;
 	void *c, *s;
 
 	if (!dev) {
@@ -676,6 +693,16 @@ device_dump_status(struct blob_buf *b, struct device *dev)
 	else
 		system_if_dump_info(dev, b);
 
+	if (dev->active) {
+		device_merge_settings(dev, &st);
+		if (st.flags & DEV_OPT_MTU)
+			blobmsg_add_u32(b, "mtu", st.mtu);
+		if (st.flags & DEV_OPT_MACADDR)
+			blobmsg_add_string(b, "macaddr", ether_ntoa((struct ether_addr *) st.macaddr));
+		if (st.flags & DEV_OPT_TXQUEUELEN)
+			blobmsg_add_u32(b, "txqueuelen", st.txqueuelen);
+	}
+
 	s = blobmsg_open_table(b, "statistics");
 	if (dev->type->dump_stats)
 		dev->type->dump_stats(dev, b);
diff --git a/system-linux.c b/system-linux.c
index 4fa0ead..34d7cae 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -746,8 +746,6 @@ system_if_dump_info(struct device *dev, struct blob_buf *b)
 
 	if (read_int_file(dir_fd, "carrier", &val))
 		blobmsg_add_u8(b, "link", !!val);
-	if (read_string_file(dir_fd, "address", buf, sizeof(buf)))
-		blobmsg_add_string(b, "macaddr", buf);
 
 	memset(&ecmd, 0, sizeof(ecmd));
 	memset(&ifr, 0, sizeof(ifr));
-- 
2.25.1