From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 include/net/act_api.h | 126 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 include/net/act_api.h

(limited to 'include/net/act_api.h')

diff --git a/include/net/act_api.h b/include/net/act_api.h
new file mode 100644
index 000000000..3ee4c92af
--- /dev/null
+++ b/include/net/act_api.h
@@ -0,0 +1,126 @@
+#ifndef __NET_ACT_API_H
+#define __NET_ACT_API_H
+
+/*
+ * Public police action API for classifiers/qdiscs
+ */
+
+#include <net/sch_generic.h>
+#include <net/pkt_sched.h>
+
+struct tcf_common {
+	struct hlist_node		tcfc_head;
+	u32				tcfc_index;
+	int				tcfc_refcnt;
+	int				tcfc_bindcnt;
+	u32				tcfc_capab;
+	int				tcfc_action;
+	struct tcf_t			tcfc_tm;
+	struct gnet_stats_basic_packed	tcfc_bstats;
+	struct gnet_stats_queue		tcfc_qstats;
+	struct gnet_stats_rate_est64	tcfc_rate_est;
+	spinlock_t			tcfc_lock;
+	struct rcu_head			tcfc_rcu;
+};
+#define tcf_head	common.tcfc_head
+#define tcf_index	common.tcfc_index
+#define tcf_refcnt	common.tcfc_refcnt
+#define tcf_bindcnt	common.tcfc_bindcnt
+#define tcf_capab	common.tcfc_capab
+#define tcf_action	common.tcfc_action
+#define tcf_tm		common.tcfc_tm
+#define tcf_bstats	common.tcfc_bstats
+#define tcf_qstats	common.tcfc_qstats
+#define tcf_rate_est	common.tcfc_rate_est
+#define tcf_lock	common.tcfc_lock
+#define tcf_rcu		common.tcfc_rcu
+
+struct tcf_hashinfo {
+	struct hlist_head	*htab;
+	unsigned int		hmask;
+	spinlock_t		lock;
+	u32			index;
+};
+
+static inline unsigned int tcf_hash(u32 index, unsigned int hmask)
+{
+	return index & hmask;
+}
+
+static inline int tcf_hashinfo_init(struct tcf_hashinfo *hf, unsigned int mask)
+{
+	int i;
+
+	spin_lock_init(&hf->lock);
+	hf->index = 0;
+	hf->hmask = mask;
+	hf->htab = kzalloc((mask + 1) * sizeof(struct hlist_head),
+			   GFP_KERNEL);
+	if (!hf->htab)
+		return -ENOMEM;
+	for (i = 0; i < mask + 1; i++)
+		INIT_HLIST_HEAD(&hf->htab[i]);
+	return 0;
+}
+
+static inline void tcf_hashinfo_destroy(struct tcf_hashinfo *hf)
+{
+	kfree(hf->htab);
+}
+
+#ifdef CONFIG_NET_CLS_ACT
+
+#define ACT_P_CREATED 1
+#define ACT_P_DELETED 1
+
+struct tc_action {
+	void			*priv;
+	const struct tc_action_ops	*ops;
+	__u32			type; /* for backward compat(TCA_OLD_COMPAT) */
+	__u32			order;
+	struct list_head	list;
+};
+
+struct tc_action_ops {
+	struct list_head head;
+	struct tcf_hashinfo *hinfo;
+	char    kind[IFNAMSIZ];
+	__u32   type; /* TBD to match kind */
+	struct module		*owner;
+	int     (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *);
+	int     (*dump)(struct sk_buff *, struct tc_action *, int, int);
+	void	(*cleanup)(struct tc_action *, int bind);
+	int     (*lookup)(struct tc_action *, u32);
+	int     (*init)(struct net *net, struct nlattr *nla,
+			struct nlattr *est, struct tc_action *act, int ovr,
+			int bind);
+	int     (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *);
+};
+
+int tcf_hash_search(struct tc_action *a, u32 index);
+void tcf_hash_destroy(struct tc_action *a);
+int tcf_hash_release(struct tc_action *a, int bind);
+u32 tcf_hash_new_index(struct tcf_hashinfo *hinfo);
+int tcf_hash_check(u32 index, struct tc_action *a, int bind);
+int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a,
+		    int size, int bind);
+void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est);
+void tcf_hash_insert(struct tc_action *a);
+
+int tcf_register_action(struct tc_action_ops *a, unsigned int mask);
+int tcf_unregister_action(struct tc_action_ops *a);
+int 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);
+int tcf_action_init(struct net *net, struct nlattr *nla,
+				  struct nlattr *est, char *n, int ovr,
+				  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 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);
+#endif /* CONFIG_NET_CLS_ACT */
+#endif
-- 
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