[HICN-651] Offload checksum computation also for data packets.

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I3663ac73cdbaad3e53d4b1973a7bcbb333b3910c

1 files changed, 42 insertions, 0 deletions

diff --git a/hicn-plugin/src/faces/inlines.h b/hicn-plugin/src/faces/inlines.h
new file mode 100644
index 000000000..bfe56c8e6
--- /dev/null
+++ b/hicn-plugin/src/faces/inlines.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2020 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_FACE_INLINES_H__
+#define __HICN_FACE_INLINES_H__
+
+#include <vlib/buffer.h>
+
+always_inline void
+ensure_offload_flags (vlib_buffer_t * b, int is_v4)
+{
+  b->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+  b->flags |= is_v4 * VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+  size_t l3_header_size = is_v4 * sizeof(ip4_header_t) + (!is_v4) * sizeof(ip6_header_t);
+
+  /* Make sure l3_hdr_offset and l4_hdr_offset are set */
+  if (!(b->flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID))
+    {
+      b->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
+      vnet_buffer(b)->l3_hdr_offset = b->current_data;
+    }
+  if (!(b->flags & VNET_BUFFER_F_L4_HDR_OFFSET_VALID))
+    {
+      b->flags |= VNET_BUFFER_F_L4_HDR_OFFSET_VALID;
+      vnet_buffer(b)->l4_hdr_offset =
+          vnet_buffer(b)->l3_hdr_offset + l3_header_size;
+    }
+}
+
+#endif /* __HICN_FACE_INLINES_H__ */
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