Re: fw mark based tc class selection not working

[Akshat Kakkar <akshat.1984@xxxxxxxxx>]

I have attached the patch herewith.

diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 715e01e..b6394ab 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -34,6 +34,7 @@
 struct fw_head {
 	u32			mask;
 	bool			mask_set;
+	bool			old_method;
 	struct fw_filter __rcu	*ht[HTSIZE];
 	struct rcu_head		rcu;
 };
@@ -65,7 +66,7 @@ static int fw_classify(struct sk_buff *skb, const struct tcf_proto *tp,
 	int r;
 	u32 id = skb->mark;
 
-	if (head != NULL) {
+	if (!head->old_method) {
 		id &= head->mask;
 
 		for (f = rcu_dereference_bh(head->ht[fw_hash(id)]); f;
@@ -120,6 +121,7 @@ static int fw_init(struct tcf_proto *tp)
 	if (head == NULL)
 		return -ENOBUFS;
 
+	head->old_method = true;
 	head->mask_set = false;
 	rcu_assign_pointer(tp->root, head);
 	return 0;
@@ -302,6 +304,7 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
 	if (!handle)
 		return -EINVAL;
 
+	head->old_method = false;
 	if (!head->mask_set) {
 		head->mask = 0xFFFFFFFF;
 		if (tb[TCA_FW_MASK])