1 files changed, 36 insertions, 5 deletions

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 6f8d65342d3a..c99508d426cc 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -59,7 +59,8 @@ tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
 struct tcf_exts {
 #ifdef CONFIG_NET_CLS_ACT
         __u32   type; /* for backward compat(TCA_OLD_COMPAT) */
-        struct list_head actions;
+        int nr_actions;
+        struct tc_action **actions;
 #endif
         /* Map to export classifier specific extension TLV types to the
          * generic extensions API. Unsupported extensions must be set to 0.
@@ -72,7 +73,10 @@ static inline void tcf_exts_init(struct tcf_exts *exts, int action, int police)
 {
 #ifdef CONFIG_NET_CLS_ACT
         exts->type = 0;
-        INIT_LIST_HEAD(&exts->actions);
+        exts->nr_actions = 0;
+        exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
+                                GFP_KERNEL);
+        WARN_ON(!exts->actions); /* TODO: propagate the error to callers */
 #endif
         exts->action = action;
         exts->police = police;
@@ -89,7 +93,7 @@ static inline int
 tcf_exts_is_predicative(struct tcf_exts *exts)
 {
 #ifdef CONFIG_NET_CLS_ACT
-        return !list_empty(&exts->actions);
+        return exts->nr_actions;
 #else
         return 0;
 #endif
@@ -108,6 +112,20 @@ tcf_exts_is_available(struct tcf_exts *exts)
         return tcf_exts_is_predicative(exts);
 }
 
+static inline void tcf_exts_to_list(const struct tcf_exts *exts,
+                                    struct list_head *actions)
+{
+#ifdef CONFIG_NET_CLS_ACT
+        int i;
+
+        for (i = 0; i < exts->nr_actions; i++) {
+                struct tc_action *a = exts->actions[i];
+
+                list_add(&a->list, actions);
+        }
+#endif
+}
+
 /**
  * tcf_exts_exec - execute tc filter extensions
  * @skb: socket buffer
@@ -124,12 +142,25 @@ tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
                struct tcf_result *res)
 {
 #ifdef CONFIG_NET_CLS_ACT
-        if (!list_empty(&exts->actions))
-                return tcf_action_exec(skb, &exts->actions, res);
+        if (exts->nr_actions)
+                return tcf_action_exec(skb, exts->actions, exts->nr_actions,
+                                       res);
 #endif
         return 0;
 }
 
+#ifdef CONFIG_NET_CLS_ACT
+
+#define tc_no_actions(_exts)  ((_exts)->nr_actions == 0)
+#define tc_single_action(_exts) ((_exts)->nr_actions == 1)
+
+#else /* CONFIG_NET_CLS_ACT */
+
+#define tc_no_actions(_exts) true
+#define tc_single_action(_exts) false
+
+#endif /* CONFIG_NET_CLS_ACT */
+
 int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
                       struct nlattr **tb, struct nlattr *rate_tlv,
                       struct tcf_exts *exts, bool ovr);