Merge branch 'u32-hwoffload-fixes'

Jakub Kicinski says:

====================
cls_u32 hardware offload fixes

This set fixes two small issues with error codes I noticed
in cls_u32.  Second patch could be viewed as user space API
change but that portion of API is not part of any release,
yet.

Compile tested only.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/cls_u32.c

@@ -457,10 +457,12 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp,
 	struct tc_to_netdev offload;
 	int err;
 
+	if (!tc_should_offload(dev, flags))
+		return tc_skip_sw(flags) ? -EINVAL : 0;
+
 	offload.type = TC_SETUP_CLSU32;
 	offload.cls_u32 = &u32_offload;
 
-	if (tc_should_offload(dev, flags)) {
 	offload.cls_u32->command = TC_CLSU32_NEW_HNODE;
 	offload.cls_u32->hnode.divisor = h->divisor;
 	offload.cls_u32->hnode.handle = h->handle;
@@ -470,7 +472,6 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp,
 					    tp->protocol, &offload);
 	if (tc_skip_sw(flags))
 		return err;
-	}
 
 	return 0;
 }
@@ -863,7 +864,7 @@ static int u32_change(struct net *net, struct sk_buff *in_skb,
 	if (tb[TCA_U32_FLAGS]) {
 		flags = nla_get_u32(tb[TCA_U32_FLAGS]);
 		if (!tc_flags_valid(flags))
-			return err;
+			return -EINVAL;
 	}
 
 	n = (struct tc_u_knode *)*arg;