1 files changed, 166 insertions, 0 deletions
diff --git a/lib/src/protocol/tcp.h b/lib/src/protocol/tcp.h
new file mode 100755
index 000000000..68f4bf8f9
--- /dev/null
+++ b/lib/src/protocol/tcp.h
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2017-2019 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 HICN_PROTOCOL_TCP_H
+#define HICN_PROTOCOL_TCP_H
+
+#include "../base.h"
+#include "../common.h"
+#include "../name.h"
+
+/*
+ * NOTE: bitfields are problematic for portability reasons. There are provided
+ * here for reference and documentation purposes, we might just provide a macro
+ * to disable and use it instead of __BYTE_ORDER__.
+ */
+typedef struct __attribute__ ((packed))
+{
+  u16 sport;
+  u16 dport;
+  union
+  {
+    u32 seq;
+    hicn_name_suffix_t name_suffix;
+  };
+  union
+  {
+    u32 seq_ack;
+    struct
+    {
+      hicn_pathlabel_t pathlabel;
+      u8 pad[3];
+    };
+  };
+
+  union
+  {
+    struct
+    {
+      u8 data_offset_and_reserved;
+      u8 flags;
+    };
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    struct
+    {
+      u16 reserved:4;
+      u16 doff:4;
+      u16 fin:1;
+      u16 syn:1;
+      u16 rst:1;
+      u16 psh:1;
+      u16 ack:1;
+      u16 urg:1;
+      u16 ece:1;
+      u16 cwr:1;
+    };
+    struct
+    {				/* __ denotes unchanged bitfields */
+      u16 timescale:4;
+      u16 __doff:4;
+      u16 __fin:1;
+      u16 __syn:1;
+      u16 __rst:1;
+      u16 sig:1;
+      u16 __ack:1;
+      u16 man:1;
+      u16 id:1;
+      u16 __cwr:1;
+    };
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+    struct
+    {
+      u16 doff:4;
+      u16 reserved:4;
+      u16 cwr:1;
+      u16 ece:1;
+      u16 urg:1;
+      u16 ack:1;
+      u16 psh:1;
+      u16 rst:1;
+      u16 syn:1;
+      u16 fin:1;
+    };
+    struct
+    {
+      u16 __doff:4;
+      u16 timescale:4;
+      u16 __cwr:1;
+      u16 id:1 u16 man:1;
+      u16 __ack:1;
+      u16 sig:1;
+      u16 __rst:1;
+      u16 __syn:1;
+      u16 __fin:1;
+    };
+#endif
+  };
+  union
+  {
+    u16 window;
+    u16 ldr;
+  };
+  u16 csum;
+  union
+  {
+    u16 urg_ptr;
+    u16 lifetime;
+  };
+} _tcp_header_t;
+
+#define TCP_HDRLEN sizeof(_tcp_header_t)
+
+#ifndef HICN_VPP_PLUGIN
+
+/* TCP flags bit 0 first. */
+#define foreach_tcp_flag                                \
+          _ (FIN) /**< No more data from sender. */             \
+      _ (SYN) /**< Synchronize sequence numbers. */         \
+      _ (RST) /**< Reset the connection. */                 \
+      _ (PSH) /**< Push function. */                        \
+      _ (ACK) /**< Ack field significant. */                \
+      _ (URG) /**< Urgent pointer field significant. */     \
+      _ (ECE) /**< ECN-echo. Receiver got CE packet */      \
+      _ (CWR) /**< Sender reduced congestion window */
+
+enum
+{
+#define _(f) TCP_FLAG_BIT_##f,
+  foreach_tcp_flag
+#undef _
+    TCP_N_FLAG_BITS,
+};
+
+enum
+{
+#define _(f) TCP_FLAG_##f = 1 << TCP_FLAG_BIT_##f,
+  foreach_tcp_flag
+#undef _
+};
+
+#endif /* HICN_VPP_PLUGIN */
+
+// get_data_name_suffix
+// name->ip4.suffix = h->v4.tcp.seq;
+
+
+#endif /* HICN_PROTOCOL_TCP_H */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */