e.g. option macaddr "@eth0" tells netifd to use the MAC of interface eth0.
Use case: set MAC address of a bridge interface to a specific interface's
MAC regardless of bridge/interface initialization order.
Signed-off-by: Günther Kelleter <guenther.kelle...@devolo.de>
---
device.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/device.c b/device.c
index 82596e4..c63ddc7 100644
--- a/device.c
+++ b/device.c
@@ -256,7 +256,21 @@ device_init_settings(struct device *dev, struct blob_attr
**tb)
}
if ((cur = tb[DEV_ATTR_MACADDR])) {
- ea = ether_aton(blobmsg_data(cur));
+ const char *data = blobmsg_data(cur);
+ struct device_settings ds = {0};
+ if (data[0] == '@') {
+ struct device dev = {0};
+ strncpy(dev.ifname, data + 1, sizeof dev.ifname);
+ dev.ifname[sizeof dev.ifname - 1] = '\0';
+ system_if_get_settings(&dev, &ds);
+ if (ds.flags & DEV_OPT_MACADDR) {
+ ea = (struct ether_addr *)ds.macaddr;
+ } else {
+ ea = NULL;
+ }
+ } else {
+ ea = ether_aton(blobmsg_data(cur));
+ }
if (ea) {
memcpy(s->macaddr, ea, 6);
s->flags |= DEV_OPT_MACADDR;
--
2.10.0.100.gddd73ec
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