net_sched: act: use standard struct list_head

Currently actions are chained by a singly linked list,
therefore it is a bit hard to add and remove a specific
entry. Convert it to struct list_head so that in the
latter patch we can remove an action without finding
its head.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 6 deletions

diff --git a/include/net/act_api.h b/include/net/act_api.h
index 04c6825e172b..a72642610790 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -60,7 +60,7 @@ struct tc_action {
         const struct tc_action_ops      *ops;
         __u32                   type; /* for backward compat(TCA_OLD_COMPAT) */
         __u32                   order;
-        struct tc_action        *next;
+        struct list_head        list;
 };
 
 #define TCA_CAP_NONE 0
@@ -99,16 +99,16 @@ void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
 
 int tcf_register_action(struct tc_action_ops *a);
 int tcf_unregister_action(struct tc_action_ops *a);
-void tcf_action_destroy(struct tc_action *a, int bind);
-int tcf_action_exec(struct sk_buff *skb, const struct tc_action *a,
+void tcf_action_destroy(struct list_head *actions, int bind);
+int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions,
                     struct tcf_result *res);
-struct tc_action *tcf_action_init(struct net *net, struct nlattr *nla,
+int tcf_action_init(struct net *net, struct nlattr *nla,
                                   struct nlattr *est, char *n, int ovr,
-                                  int bind);
+                                  int bind, struct list_head *);
 struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla,
                                     struct nlattr *est, char *n, int ovr,
                                     int bind);
-int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
+int tcf_action_dump(struct sk_buff *skb, struct list_head *, int, int);
 int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
 int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
 int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);