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-rw-r--r--plugins/plugins/vcgn/nat64_tcp_sm.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/plugins/plugins/vcgn/nat64_tcp_sm.h b/plugins/plugins/vcgn/nat64_tcp_sm.h
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+++ b/plugins/plugins/vcgn/nat64_tcp_sm.h
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+/*
+ *------------------------------------------------------------------
+ * nat64_tcp_sm.h - Stateful NAT64 translation TCP State machine
+ *
+ * Copyright (c) 2011 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+#ifndef __NAT64_TCP_SM_H__
+#define __NAT64_TCP_SM_H__
+
+
+/* TCP States */
+typedef enum {
+ TCP_CLOSED,
+ TCP_V4_INIT,
+ TCP_V6_INIT,
+ TCP_ESTABLISHED,
+ TCP_V4_FIN_RCV,
+ TCP_V6_FIN_RCV,
+ TCP_V4V6_FIN_RCV,
+ TCP_TRANS,
+ TCP_NONE
+} nat64_tcp_states;
+
+/* TCP Events */
+typedef enum {
+ TCP_TIMEOUT_EV,
+ TCP_V6_SYN_EV,
+ TCP_V4_SYN_EV,
+ TCP_V6_FIN_EV,
+ TCP_V4_FIN_EV,
+ TCP_V6_RST_EV,
+ TCP_V4_RST_EV,
+ TCP_DEFAULT_EV,
+ TCP_EV_COUNT
+} nat64_tcp_events;
+
+/* TCP Actions */
+typedef enum {
+ TCP_FORWARD,
+ TCP_COND_FORWARD, /* Conditional forward, based on presence of
+ * session and bib entries */
+ TCP_STORE,
+ TCP_PROBE,
+ TCP_CREATE_SESSION,
+ TCP_DELETE_SESSION,
+ TCP_DROP,
+ TCP_ACTION_NONE,
+ TCP_ACTION_COUNT
+} nat64_tcp_actions;
+
+typedef struct {
+ nat64_tcp_states next_state;
+ nat64_tcp_actions action;
+} nat64_tcp_trans_t;
+
+typedef struct {
+ nat64_tcp_trans_t event[TCP_EV_COUNT];
+} nat64_tcp_state_trans_t;
+
+extern nat64_tcp_state_trans_t nat64_tcp_sm_lookup[TCP_NONE];
+
+/*
+inline void
+nat64_update_v6_to_v4_tcp (nat64_v6_to_v4_pipeline_data_t *pctx_ptr,
+ nat64_bib_entry_t *bib_ptr);
+
+inline u8 nat64_v6_to_v4_tcp_perform_action (
+ spp_ctx_t *ctx,
+ nat64_v6_to_v4_pipeline_data_t *pctx_ptr,
+ nat64_bib_entry_t *bib_db,
+ nat64_session_entry_t *session_db);
+
+inline void
+nat64_copy_tcp_into_pctx (nat64_v6_to_v4_pipeline_data_t *pctx_ptr);
+*/
+
+
+
+#endif