netfilter: Let nf_ct_kill() callers know if del_timer() returned true.

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/netfilter/nf_conntrack.h

@@ -223,23 +223,23 @@ static inline void nf_ct_refresh(struct nf_conn *ct,
 	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
 }
 
-extern void __nf_ct_kill_acct(struct nf_conn *ct,
+extern bool __nf_ct_kill_acct(struct nf_conn *ct,
 			      enum ip_conntrack_info ctinfo,
 			      const struct sk_buff *skb,
 			      int do_acct);
 
 /* kill conntrack and do accounting */
-static inline void nf_ct_kill_acct(struct nf_conn *ct,
+static inline bool nf_ct_kill_acct(struct nf_conn *ct,
 				   enum ip_conntrack_info ctinfo,
 				   const struct sk_buff *skb)
 {
-	__nf_ct_kill_acct(ct, ctinfo, skb, 1);
+	return __nf_ct_kill_acct(ct, ctinfo, skb, 1);
 }
 
 /* kill conntrack without accounting */
-static inline void nf_ct_kill(struct nf_conn *ct)
+static inline bool nf_ct_kill(struct nf_conn *ct)
 {
-	__nf_ct_kill_acct(ct, 0, NULL, 0);
+	return __nf_ct_kill_acct(ct, 0, NULL, 0);
 }
 
 /* These are for NAT.  Icky. */

net/netfilter/nf_conntrack_core.c

@@ -848,7 +848,7 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
 }
 EXPORT_SYMBOL_GPL(__nf_ct_refresh_acct);
 
-void __nf_ct_kill_acct(struct nf_conn *ct,
+bool __nf_ct_kill_acct(struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       const struct sk_buff *skb,
 		       int do_acct)
@@ -862,8 +862,11 @@ void __nf_ct_kill_acct(struct nf_conn *ct,
 		spin_unlock_bh(&nf_conntrack_lock);
 	}
 #endif
-	if (del_timer(&ct->timeout))
+	if (del_timer(&ct->timeout)) {
 		ct->timeout.function((unsigned long)ct);
+		return true;
+	}
+	return false;
 }
 EXPORT_SYMBOL_GPL(__nf_ct_kill_acct);