ofproto: Add "ofproto/trace" command to help debugging flow tables.

[sliver-openvswitch.git] / utilities / ovs-tcpundump.in

diff --git a/utilities/ovs-tcpundump.in b/utilities/ovs-tcpundump.in
new file mode 100755 (executable)
index 0000000..c018998
--- /dev/null
+++ b/utilities/ovs-tcpundump.in
@@ -0,0 +1,75 @@
+#! @PYTHON@
+#
+# Copyright (c) 2010 Nicira Networks.
+#
+# 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.
+
+import getopt
+import re
+import sys
+
+argv0 = sys.argv[0]
+
+def usage():
+    print """\
+%(argv0)s: print "tcpdump -xx" output as hex
+usage: %(argv0)s < FILE
+where FILE is output from "tcpdump -xx".
+
+The following options are also available:
+  -h, --help                  display this help message
+  -V, --version               display version information\
+""" % {'argv0': argv0}
+    sys.exit(0)
+
+if __name__ == "__main__":
+    try:
+        options, args = getopt.gnu_getopt(sys.argv[1:], 'hV',
+                                          ['help', 'version'])
+    except getopt.GetoptPcapException, geo:
+        sys.stderr.write("%s: %s\n" % (argv0, geo.msg))
+        sys.exit(1)
+
+    for key, value in options:
+        if key in ['-h', '--help']:
+            usage()
+        elif key in ['-V', '--version']:
+            print "ovs-pcap (Open vSwitch) @VERSION@"
+        else:
+            sys.exit(0)
+
+    if len(args) != 0:
+        sys.stderr.write("%s: non-option argument not supported "
+                         "(use --help for help)\n" % argv0)
+        sys.exit(1)
+
+    packet = ''
+    regex = re.compile(r'^\s+0x([0-9a-fA-F]+): ((?: [0-9a-fA-F]{4})+)')
+    while True:
+        line = sys.stdin.readline()
+        if line == "":
+            break
+
+        m = regex.match(line)
+        if m is None or int(m.group(1)) == 0:
+            if packet != '':
+                print packet
+            packet = ''
+        if m:
+            packet += re.sub(r'\s', '', m.group(2), 0)
+    if packet != '':
+        print packet
+
+# Local variables:
+# mode: python
+# End: