can: add the missing netlink get_xstats_size callback

This patch adds the missing "get_xstats_size" callback for the
netlink interface, which is required if "fill_xstats" is used,
as pointed out by Patrick McHardy.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 564e31c..2868fe8 100644 (file)
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -629,6 +629,11 @@ nla_put_failure:
        return -EMSGSIZE;
 }
 
+static size_t can_get_xstats_size(const struct net_device *dev)
+{
+       return sizeof(struct can_device_stats);
+}
+
 static int can_fill_xstats(struct sk_buff *skb, const struct net_device *dev)
 {
        struct can_priv *priv = netdev_priv(dev);
@@ -657,6 +662,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = {
        .changelink     = can_changelink,
        .get_size       = can_get_size,
        .fill_info      = can_fill_info,
+       .get_xstats_size = can_get_xstats_size,
        .fill_xstats    = can_fill_xstats,
 };