ip: fix udp/tcp checksum corner cases

When checksumming chained buffers with odd lengths: insert a
NULL byte, or the calculation fails.

Type: fix

Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: John Lo <loj@cisco.com>
Change-Id: I380f7c42897bdb28c8c29aa1c4cdaaa849cc9ecc
diff --git a/src/vlib/cli.c b/src/vlib/cli.c
index 60895ba..131a593 100644
--- a/src/vlib/cli.c
+++ b/src/vlib/cli.c
@@ -1709,6 +1709,23 @@
 /* *INDENT-ON* */
 
 static clib_error_t *
+suspend_command_fn (vlib_main_t * vm,
+		    unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  vlib_process_suspend (vm, 30e-3);
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (suspend_command, static) =
+{
+  .path = "suspend",
+  .short_help = "suspend debug CLI for 30ms",
+  .function = suspend_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
 vlib_cli_init (vlib_main_t * vm)
 {
   vlib_cli_main_t *cm = &vm->cli_main;