On 4/8/17 1:48 PM, Johannes Berg wrote:
> diff --git a/include/uapi/linux/netlink.h b/include/uapi/linux/netlink.h
> index f3946a27bd07..d1564557d645 100644
> --- a/include/uapi/linux/netlink.h
> +++ b/include/uapi/linux/netlink.h
> @@ -101,6 +101,29 @@ struct nlmsghdr {
> struct nlmsgerr {
> int error;
> struct nlmsghdr msg;
> + /*
> + * followed by the message contents unless NETLINK_CAP_ACK was set,
> + * message length is aligned with NLMSG_ALIGN()
> + */
> + /*
> + * followed by TLVs defined in enum nlmsgerr_attrs
> + * if NETLINK_EXT_ACK was set
> + */
> +};
> +
> +/**
> + * enum nlmsgerr_attrs - netlink error message attributes
> + * @NLMSGERR_ATTR_UNUSED: unused
> + * @NLMSGERR_ATTR_MSG: error message string (string)
> + * @NLMSGERR_ATTR_OFFS: error offset in the original message (u32)
> + * @NLMSGERR_ATTR_ATTR: top-level attribute that caused the error
> + * (or is missing, u16)
> + */
> +enum nlmsgerr_attrs {
> + NLMSGERR_ATTR_UNUSED,
> + NLMSGERR_ATTR_MSG,
> + NLMSGERR_ATTR_OFFS,
> + NLMSGERR_ATTR_ATTR,
can you add __NLMSGERR_ATTR_MAX and
#define NLMSGERR_ATTR_MAX (__NLMSGERR_ATTR_MAX - 1)
