net: sched: return -ENOENT when trying to remove filter from non-existent chain

When chain 0 was implicitly created, removal of non-existent filter from
chain 0 gave -ENOENT. Once chain 0 became non-implicit, the same call is
giving -EINVAL. Fix this by returning -ENOENT in that case.

Reported-by: Roman Mashak <mrv@mojatatu.com>
Fixes: f71e0ca4db18 ("net: sched: Avoid implicit chain 0 creation")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 2d41c5b..1a67af8 100644 (file)
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -1399,7 +1399,7 @@ static int tc_del_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
                        goto errout;
                }
                NL_SET_ERR_MSG(extack, "Cannot find specified filter chain");
-               err = -EINVAL;
+               err = -ENOENT;
                goto errout;
        }