Initial commit of vpp code.

[vpp.git] / vnet / vnet / ip / udp_format.c

diff --git a/vnet/vnet/ip/udp_format.c b/vnet/vnet/ip/udp_format.c
new file mode 100644 (file)
index 0000000..dd54095
--- /dev/null
+++ b/vnet/vnet/ip/udp_format.c
@@ -0,0 +1,83 @@
+/*
+ * 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.
+ */
+/*
+ * ip/udp_format.c: udp formatting
+ *
+ * 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 <vnet/ip/ip.h>
+
+/* Format UDP header. */
+u8 * format_udp_header (u8 * s, va_list * args)
+{
+  udp_header_t * udp = va_arg (*args, udp_header_t *);
+  u32 max_header_bytes = va_arg (*args, u32);
+  uword indent;
+  u32 header_bytes = sizeof (udp[0]);
+
+  /* Nothing to do. */
+  if (max_header_bytes < sizeof (udp[0]))
+    return format (s, "UDP header truncated");
+
+  indent = format_get_indent (s);
+  indent += 2;
+
+  s = format (s, "UDP: %d -> %d",
+             clib_net_to_host_u16 (udp->src_port),
+             clib_net_to_host_u16 (udp->dst_port));
+
+  s = format (s, "\n%Ulength %d, checksum 0x%04x",
+             format_white_space, indent,
+             clib_net_to_host_u16 (udp->length),
+             clib_net_to_host_u16 (udp->checksum));
+
+  /* Recurse into next protocol layer. */
+  if (max_header_bytes != 0 && header_bytes < max_header_bytes)
+    {
+      ip_main_t * im = &ip_main;
+      tcp_udp_port_info_t * pi;
+
+      pi = ip_get_tcp_udp_port_info (im, udp->dst_port);
+
+      if (pi && pi->format_header)
+       s = format (s, "\n%U%U",
+                   format_white_space, indent - 2,
+                   pi->format_header,
+                   /* next protocol header */ (udp + 1),
+                   max_header_bytes - sizeof (udp[0]));
+    }
+
+  return s;
+}