1 files changed, 82 insertions, 0 deletions
diff --git a/src/vnet/lisp-cp/packets.h b/src/vnet/lisp-cp/packets.h
new file mode 100644
index 00000000000..212a1d78163
--- /dev/null
+++ b/src/vnet/lisp-cp/packets.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/lisp-cp/lisp_types.h>
+
+#define IP_DF 0x4000		/* don't fragment */
+
+void *pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src,
+		   ip_address_t * dst, u32 proto);
+
+void *pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp,
+			   u16 dp, ip_address_t * sip, ip_address_t * dip);
+
+void *pkt_push_ecm_hdr (vlib_buffer_t * b);
+
+always_inline u8 *
+vlib_buffer_get_tail (vlib_buffer_t * b)
+{
+  return b->data + b->current_data + b->current_length;
+}
+
+always_inline void *
+vlib_buffer_put_uninit (vlib_buffer_t * b, u8 size)
+{
+  /* XXX should make sure there's enough space! */
+  void *p = vlib_buffer_get_tail (b);
+  b->current_length += size;
+  return p;
+}
+
+always_inline void *
+vlib_buffer_push_uninit (vlib_buffer_t * b, u8 size)
+{
+  /* XXX should make sure there's enough space! */
+  ASSERT (b->current_data >= size);
+  b->current_data -= size;
+  b->current_length += size;
+
+  return vlib_buffer_get_current (b);
+}
+
+always_inline void *
+vlib_buffer_make_headroom (vlib_buffer_t * b, u8 size)
+{
+  /* XXX should make sure there's enough space! */
+  b->current_data += size;
+  return vlib_buffer_get_current (b);
+}
+
+always_inline void *
+vlib_buffer_pull (vlib_buffer_t * b, u8 size)
+{
+  if (b->current_length < size)
+    return 0;
+
+  void *data = vlib_buffer_get_current (b);
+  vlib_buffer_advance (b, size);
+  return data;
+}
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */