Initial commit of vpp code.

[vpp.git] / vnet / vnet / llc / pg.c

diff --git a/vnet/vnet/llc/pg.c b/vnet/vnet/llc/pg.c
new file mode 100644 (file)
index 0000000..eb6c6a1
--- /dev/null
+++ b/vnet/vnet/llc/pg.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * llc_pg.c: packet generator llc interface
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/llc/llc.h>
+
+typedef struct {
+  pg_edit_t dst_sap;
+  pg_edit_t src_sap;
+  pg_edit_t control;
+} pg_llc_header_t;
+
+static inline void
+pg_llc_header_init (pg_llc_header_t * e)
+{
+  pg_edit_init (&e->dst_sap, llc_header_t, dst_sap);
+  pg_edit_init (&e->src_sap, llc_header_t, src_sap);
+  pg_edit_init (&e->control, llc_header_t, control);
+}
+
+uword
+unformat_pg_llc_header (unformat_input_t * input, va_list * args)
+{
+  pg_stream_t * s = va_arg (*args, pg_stream_t *);
+  pg_llc_header_t * h;
+  u32 group_index, error;
+  
+  h = pg_create_edit_group (s, sizeof (h[0]), sizeof (llc_header_t),
+                           &group_index);
+  pg_llc_header_init (h);
+
+  pg_edit_set_fixed (&h->control, 0x03);
+
+  error = 1;
+  if (! unformat (input, "%U -> %U",
+                 unformat_pg_edit,
+                   unformat_llc_protocol, &h->src_sap, &h->dst_sap))
+    goto done;
+
+  {
+    llc_main_t * pm = &llc_main;
+    llc_protocol_info_t * pi = 0;
+    pg_node_t * pg_node = 0;
+
+    if (h->dst_sap.type == PG_EDIT_FIXED)
+      {
+       u8 t = *h->dst_sap.values[PG_EDIT_LO];
+       pi = llc_get_protocol_info (pm, t);
+       if (pi && pi->node_index != ~0)
+         pg_node = pg_get_node (pi->node_index);
+      }
+
+    if (pg_node && pg_node->unformat_edit
+       && unformat_user (input, pg_node->unformat_edit, s))
+      ;
+
+    else if (! unformat_user (input, unformat_pg_payload, s))
+      goto done;
+  }
+
+  error = 0;
+ done:
+  if (error)
+    pg_free_edit_group (s);
+  return error == 0;
+}
+