Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / netfilter / nf_conntrack_expect.h

diff --git a/kernel/include/net/netfilter/nf_conntrack_expect.h b/kernel/include/net/netfilter/nf_conntrack_expect.h
new file mode 100644 (file)
index 0000000..3f3aecb
--- /dev/null
+++ b/kernel/include/net/netfilter/nf_conntrack_expect.h
@@ -0,0 +1,116 @@
+/*
+ * connection tracking expectations.
+ */
+
+#ifndef _NF_CONNTRACK_EXPECT_H
+#define _NF_CONNTRACK_EXPECT_H
+#include <net/netfilter/nf_conntrack.h>
+
+extern unsigned int nf_ct_expect_hsize;
+extern unsigned int nf_ct_expect_max;
+
+struct nf_conntrack_expect {
+       /* Conntrack expectation list member */
+       struct hlist_node lnode;
+
+       /* Hash member */
+       struct hlist_node hnode;
+
+       /* We expect this tuple, with the following mask */
+       struct nf_conntrack_tuple tuple;
+       struct nf_conntrack_tuple_mask mask;
+
+       /* Function to call after setup and insertion */
+       void (*expectfn)(struct nf_conn *new,
+                        struct nf_conntrack_expect *this);
+
+       /* Helper to assign to new connection */
+       struct nf_conntrack_helper *helper;
+
+       /* The conntrack of the master connection */
+       struct nf_conn *master;
+
+       /* Timer function; deletes the expectation. */
+       struct timer_list timeout;
+
+       /* Usage count. */
+       atomic_t use;
+
+       /* Flags */
+       unsigned int flags;
+
+       /* Expectation class */
+       unsigned int class;
+
+#ifdef CONFIG_NF_NAT_NEEDED
+       union nf_inet_addr saved_addr;
+       /* This is the original per-proto part, used to map the
+        * expected connection the way the recipient expects. */
+       union nf_conntrack_man_proto saved_proto;
+       /* Direction relative to the master connection. */
+       enum ip_conntrack_dir dir;
+#endif
+
+       struct rcu_head rcu;
+};
+
+static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp)
+{
+       return nf_ct_net(exp->master);
+}
+
+#define NF_CT_EXP_POLICY_NAME_LEN      16
+
+struct nf_conntrack_expect_policy {
+       unsigned int    max_expected;
+       unsigned int    timeout;
+       char            name[NF_CT_EXP_POLICY_NAME_LEN];
+};
+
+#define NF_CT_EXPECT_CLASS_DEFAULT     0
+
+int nf_conntrack_expect_pernet_init(struct net *net);
+void nf_conntrack_expect_pernet_fini(struct net *net);
+
+int nf_conntrack_expect_init(void);
+void nf_conntrack_expect_fini(void);
+
+struct nf_conntrack_expect *
+__nf_ct_expect_find(struct net *net, u16 zone,
+                   const struct nf_conntrack_tuple *tuple);
+
+struct nf_conntrack_expect *
+nf_ct_expect_find_get(struct net *net, u16 zone,
+                     const struct nf_conntrack_tuple *tuple);
+
+struct nf_conntrack_expect *
+nf_ct_find_expectation(struct net *net, u16 zone,
+                      const struct nf_conntrack_tuple *tuple);
+
+void nf_ct_unlink_expect_report(struct nf_conntrack_expect *exp,
+                               u32 portid, int report);
+static inline void nf_ct_unlink_expect(struct nf_conntrack_expect *exp)
+{
+       nf_ct_unlink_expect_report(exp, 0, 0);
+}
+
+void nf_ct_remove_expectations(struct nf_conn *ct);
+void nf_ct_unexpect_related(struct nf_conntrack_expect *exp);
+
+/* Allocate space for an expectation: this is mandatory before calling
+   nf_ct_expect_related.  You will have to call put afterwards. */
+struct nf_conntrack_expect *nf_ct_expect_alloc(struct nf_conn *me);
+void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t,
+                      const union nf_inet_addr *,
+                      const union nf_inet_addr *,
+                      u_int8_t, const __be16 *, const __be16 *);
+void nf_ct_expect_put(struct nf_conntrack_expect *exp);
+int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, 
+                               u32 portid, int report);
+static inline int nf_ct_expect_related(struct nf_conntrack_expect *expect)
+{
+       return nf_ct_expect_related_report(expect, 0, 0);
+}
+
+#endif /*_NF_CONNTRACK_EXPECT_H*/
+