hsi: host stack intercept plugin

Enable selective punting of flows to host stack

Type: feature

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ib31a3abfe3b21a2aa448bfacc4591fa5c840f935

MAINTAINERS

@@ -763,6 +763,11 @@ I:	bufmon
 M:	Benoît Ganne <bganne@cisco.com>
 F:	src/plugins/bufmon/
 
+Plugin - HSI
+I:	hsi
+M:	Florin Coras <fcoras@cisco.com>
+F:	src/plugins/hsi/
+
 cJSON
 I:	cjson
 M:	Ole Troan <ot@cisco.com>

src/plugins/hsi/CMakeLists.txt

@@ -0,0 +1,17 @@
+# Copyright (c) 2021 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.
+
+add_vpp_plugin(hsi
+  SOURCES
+  hsi.c
+)

src/plugins/hsi/FEATURE.yaml

@@ -0,0 +1,8 @@
+---
+name: HSI (Host Stack Intercept)
+maintainer: Florin Coras <fcoras@cisco.com>
+features:
+  - Host stack intercept feature
+description: "Feature that enables selective punting of flows to the host stack"
+state: experimental
+properties: [MULTITHREAD]

src/plugins/hsi/hsi.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2021 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 SRC_PLUGINS_HSI_HSI_H_
+#define SRC_PLUGINS_HSI_HSI_H_
+
+#include <vnet/session/session.h>
+
+typedef enum _hsi_error
+{
+#define hsi_error(n, s) HSI_ERROR_##n,
+#include <hsi/hsi_error.def>
+#undef hsi_error
+  HSI_N_ERROR,
+} hsi_error_t;
+
+#endif /* SRC_PLUGINS_HSI_HSI_H_ */

src/plugins/hsi/hsi_error.def

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2021 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.
+ */
+
+hsi_error (NONE, "no error")