On 7/30/20 4:38 PM, David Miller wrote:
From: Roopa Prabhu
Date: Mon, 27 Jul 2020 12:21:17 -0700
+/**
+ * dev_get_proto_down_reason - returns protodown reason
+ *
+ * @dev: device
+ */
+u32 dev_get_proto_down_reason(const struct net_device *dev)
+{
+ return dev->proto_down_reason;
+}
From: Roopa Prabhu
Date: Mon, 27 Jul 2020 12:21:17 -0700
> +/**
> + * dev_get_proto_down_reason - returns protodown reason
> + *
> + * @dev: device
> + */
> +u32 dev_get_proto_down_reason(const struct net_device *dev)
> +{
> + return dev->proto_down_reason;
> +}
> +EXPORT_SYMBOL(dev_get_p
On 7/27/20 1:47 PM, Stephen Hemminger wrote:
External email: Use caution opening links or attachments
On Mon, 27 Jul 2020 12:21:17 -0700
Roopa Prabhu wrote:
-+ nla_total_size(1) /* IFLA_PROTO_DOWN */
++ rtnl_proto_down_size(dev) /* proto down */
Changing the size
On Mon, 27 Jul 2020 12:21:17 -0700
Roopa Prabhu wrote:
> -+ nla_total_size(1) /* IFLA_PROTO_DOWN */
> ++ rtnl_proto_down_size(dev) /* proto down */
Changing the size of a netlink field is an ABI change in the kernel.
This has the potential to break existing programs.
W
From: Roopa Prabhu
netdev protodown is a mechanism that allows protocols to
hold an interface down. It was initially introduced in
the kernel to hold links down by a multihoming protocol.
There was also an attempt to introduce protodown
reason at the time but was rejected. protodown and protodown
