Re: [Xen-users] Remus dom0 network buffering

[Shriram Rajagopalan <rshriram@xxxxxxxxx>]

ah darn. Yes, the 3.5 kernel has sch_plug in it. Unfortunately, the
technique to initialize the sch_plug module is bit
different with the module thats already mainline. You ll have to patch
the qdisc.py python module. I ll submit the
patch to xen devel soon.
Mean while, can you try the patch below and see if it works ?

Secondly, you said you were writing a blog about how you set it up.
One of the remus users created a wiki
remusha.wikidot.com, which has a whole tutorial on how to setup remus
with Debian Squeeze. I have been under fire
lately for a host of remus issues. It would be great if you could post
your experiences on the wiki too.
(http://remusha.wikidot.com/system:join)

thanks
shriram

---
diff -r 6435f1edf24e tools/python/xen/remus/qdisc.py
--- a/tools/python/xen/remus/qdisc.py   Tue Jul 17 19:23:30 2012 -0400
+++ b/tools/python/xen/remus/qdisc.py   Mon Feb 18 18:25:22 2013 -0500
@@ -1,6 +1,9 @@
 import socket, struct

 import netlink
+import platform
+
+kernelversion = platform.platform(terse=True).split("-")[1].split(".")

 qdisc_kinds = {}

@@ -150,9 +153,14 @@
 TC_PLUG_RELEASE = 1

 class PlugQdisc(Qdisc):
-    fmt = 'I'

     def __init__(self, qdict=None):
+        if int(kernelversion[0]) >= 3 and int(kernelversion[1]) >= 4:
+            self.fmt = 'iI'
+            self.limit = 10000
+        else:
+            self.fmt = 'I'
+
         if not qdict:
             qdict = {'kind': 'plug',
                      'handle': TC_H_ROOT}
@@ -161,7 +169,10 @@
         self.action = 0

     def pack(self):
-        return struct.pack(self.fmt, self.action)
+        if int(kernelversion[0]) >= 3 and int(kernelversion[1]) >= 4:
+            return struct.pack(self.fmt, self.action, self.limit)
+        else:
+            return struct.pack(self.fmt, self.action)

     def parse(self, args):
         if not args:

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