Driver core: notify userspace of network device renames
Provide rename event for when we rename network devices.
Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 221a64a..e441ec7 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -424,6 +424,17 @@
if ((size <= 0) || (i >= num_envp))
return -ENOMEM;
+ /* pass ifindex to uevent.
+ * ifindex is useful as it won't change (interface name may change)
+ * and is what RtNetlink uses natively. */
+ envp[i++] = buf;
+ n = snprintf(buf, size, "IFINDEX=%d", dev->ifindex) + 1;
+ buf += n;
+ size -= n;
+
+ if ((size <= 0) || (i >= num_envp))
+ return -ENOMEM;
+
envp[i] = NULL;
return 0;
}