Network delay simulator plugin

Change-Id: I4a70c7df8f0cb368a4e1cb16f30eeef5c6058c79
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/plugins/nsim/nsim.h b/src/plugins/nsim/nsim.h
new file mode 100644
index 00000000000..d0b5ed32fee
--- /dev/null
+++ b/src/plugins/nsim/nsim.h
@@ -0,0 +1,90 @@
+
+/*
+ * nsim.h - skeleton vpp engine plug-in header file
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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 __included_nsim_h__
+#define __included_nsim_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+
+#define WHEEL_ENTRY_DATA_SIZE 1536	/* an even multiple of 64, pls */
+
+typedef struct
+{
+  f64 tx_time;
+  u32 tx_sw_if_index;
+  u32 current_length;
+    CLIB_CACHE_LINE_ALIGN_MARK (pad);
+  u8 data[WHEEL_ENTRY_DATA_SIZE];
+} nsim_wheel_entry_t;
+
+typedef struct
+{
+  u32 wheel_size;
+  u32 cursize;
+  u32 head;
+  u32 tail;
+  nsim_wheel_entry_t *entries;
+    CLIB_CACHE_LINE_ALIGN_MARK (pad);
+} nsim_wheel_t;
+
+typedef struct
+{
+  /* API message ID base */
+  u16 msg_id_base;
+
+  /* Two interfaces, cross-connected with delay */
+  u32 sw_if_index0, sw_if_index1;
+  u32 output_next_index0, output_next_index1;
+
+  /* Per-thread buffer / scheduler wheels */
+  nsim_wheel_t **wheel_by_thread;
+  u32 **buffer_indices_by_thread;
+
+  /* Config parameters */
+  f64 delay;
+  f64 bandwidth;
+  f64 packet_size;
+
+  u64 mmap_size;
+
+  /* Wheels are configured */
+  int is_configured;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} nsim_main_t;
+
+extern nsim_main_t nsim_main;
+
+extern vlib_node_registration_t nsim_node;
+extern vlib_node_registration_t nsim_input_node;
+
+#endif /* __included_nsim_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */