rtnetlink: fdb dump: optimize by saving last interface markers

[cascardo/linux.git] / net / switchdev / switchdev.c

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 1031a03..10b8193 100644 (file)
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -1042,7 +1042,7 @@ static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj)
        struct nlmsghdr *nlh;
        struct ndmsg *ndm;
 
-       if (dump->idx < dump->cb->args[0])
+       if (dump->idx < dump->cb->args[2])
                goto skip;
 
        nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
@@ -1089,7 +1089,7 @@ nla_put_failure:
  */
 int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
                            struct net_device *dev,
-                           struct net_device *filter_dev, int idx)
+                           struct net_device *filter_dev, int *idx)
 {
        struct switchdev_fdb_dump dump = {
                .fdb.obj.orig_dev = dev,
@@ -1097,14 +1097,14 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
                .dev = dev,
                .skb = skb,
                .cb = cb,
-               .idx = idx,
+               .idx = *idx,
        };
        int err;
 
        err = switchdev_port_obj_dump(dev, &dump.fdb.obj,
                                      switchdev_port_fdb_dump_cb);
-       cb->args[1] = err;
-       return dump.idx;
+       *idx = dump.idx;
+       return err;
 }
 EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);