Re: [nox-dev] IP address prefixing
Thanks Murphy. That was extremely helpful. Theo On 01/09/2012 04:09 PM, Murphy McCauley wrote: I am assuming that by 10.10.23.40/2, you don't intend the CIDR meaning, and in fact mean that you want two bits to be wildcarded. Try this: wildcard = (wildcard& ~OFPFW_NW_DST_MASK) | (wild_bits<< OFPFW_NW_DST_SHIFT); .. where wild_bits is between 0 and 32 inclusive (in your case, it should be 2). Hope that helps. -- Murphy On Jan 9, 2012, at 10:24 AM, Theophlius Benson wrote: Good Morning, I am trying to install rules into switches to match ip prefixes. For example 10.10.23.40/2. However, the rules i install endup looking like this: 0.0.0.0/2. I'm sure that I'm installing these rules incorrectly. Here is a fragment of the code that sets the matching criteria. wildcard = (~OFPFW_NW_DST_ALL& (OFPFW_NW_DST_MASK<< dstmask)) | wildcard; ofm->match.wildcards = htonl(wildcard); ofm->match.nw_dst=htonl(dstip); I Can include more fragments of the code if you will find it helpful. Theo ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] IP address prefixing
I am assuming that by 10.10.23.40/2, you don't intend the CIDR meaning, and in fact mean that you want two bits to be wildcarded. Try this: wildcard = (wildcard & ~OFPFW_NW_DST_MASK) | (wild_bits << OFPFW_NW_DST_SHIFT); .. where wild_bits is between 0 and 32 inclusive (in your case, it should be 2). Hope that helps. -- Murphy On Jan 9, 2012, at 10:24 AM, Theophlius Benson wrote: > Good Morning, > > I am trying to install rules into switches to match ip prefixes. For example > 10.10.23.40/2. However, the rules i install endup looking like this: > 0.0.0.0/2. I'm sure that I'm installing these rules incorrectly. Here is a > fragment of the code that sets the matching criteria. > > wildcard = (~OFPFW_NW_DST_ALL & (OFPFW_NW_DST_MASK << dstmask)) | > wildcard; >ofm->match.wildcards = htonl(wildcard); >ofm->match.nw_dst=htonl(dstip); > > I Can include more fragments of the code if you will find it helpful. > Theo > ___ > nox-dev mailing list > nox-dev@noxrepo.org > http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] IP address prefixing
Good Morning, I am trying to install rules into switches to match ip prefixes. For example 10.10.23.40/2. However, the rules i install endup looking like this: 0.0.0.0/2. I'm sure that I'm installing these rules incorrectly. Here is a fragment of the code that sets the matching criteria. wildcard = (~OFPFW_NW_DST_ALL & (OFPFW_NW_DST_MASK << dstmask)) | wildcard; ofm->match.wildcards = htonl(wildcard); ofm->match.nw_dst=htonl(dstip); I Can include more fragments of the code if you will find it helpful. Theo ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Ip Address
This looks to me like the utility function convert_to_ipaddr() has some
unfortunate and inconsistent behavior. It could be that things rely on this,
so this patch may actually break things. I tried to do a quick look and fix
where that happens, but I haven't tested even a little tiny bit. It may
correct the situation, though. Let me know. :)
-- Murphy
fix_ipaddr.patch
Description: Binary data
On Nov 27, 2010, at 4:33 PM, Rohit Manohar wrote:
> I am trying to change the IP source for a flow. For that I am doing the
> following:
>
> src_ip = '10.0.0.4'
> actions = [[openflow.OFPAT_OUTPUT, [0,
> prt[0]]],[openflow.OFPAT_SET_NW_SRC,src_ip]]
>
> When I run the code, I get the following error. Any idea what might be
> causing it?
>
> 00035|pyrt|ERR:unable to invoke a Python event handler:
> Traceback (most recent call last):
> File "./nox/lib/util.py", line 116, in f
> event.total_len, buffer_id, packet)
> File "./nox/coreapps/examples/pyproject.py", line 166, in packet_in_callback
> forward_l2_packet(dpid, inport, packet, packet.arr, bufid)
> File "./nox/coreapps/examples/pyproject.py", line 107, in forward_l2_packet
> inport, buf)
> File "./nox/lib/core.py", line 378, in install_datapath_flow
> (idle_timeout, actions, buffer_id), hard_timeout)
> File "./nox/lib/core.py", line 257, in send_flow_command
> oactions = self.make_action_array(actions)
> File "./nox/lib/core.py", line 168, in make_action_array
> a = struct.pack("HHI", htons(action[0]), htons(8), iaddr.addr)
> AttributeError: 'int' object has no attribute 'addr'
>
>
> Regards,
> --
> Rohit Manohar
> Graduate Student
> North Carolina State University
> Raleigh, US.
>
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[nox-dev] Ip Address
I am trying to change the IP source for a flow. For that I am doing the
following:
src_ip = '10.0.0.4'
actions = [[openflow.OFPAT_OUTPUT, [0,
prt[0]]],[openflow.OFPAT_SET_NW_SRC,src_ip]]
When I run the code, I get the following error. Any idea what might be
causing it?
00035|pyrt|ERR:unable to invoke a Python event handler:
Traceback (most recent call last):
File "./nox/lib/util.py", line 116, in f
event.total_len, buffer_id, packet)
File "./nox/coreapps/examples/pyproject.py", line 166, in
packet_in_callback
forward_l2_packet(dpid, inport, packet, packet.arr, bufid)
File "./nox/coreapps/examples/pyproject.py", line 107, in
forward_l2_packet
inport, buf)
File "./nox/lib/core.py", line 378, in install_datapath_flow
(idle_timeout, actions, buffer_id), hard_timeout)
File "./nox/lib/core.py", line 257, in send_flow_command
oactions = self.make_action_array(actions)
File "./nox/lib/core.py", line 168, in make_action_array
a = struct.pack("HHI", htons(action[0]), htons(8), iaddr.addr)
AttributeError: 'int' object has no attribute 'addr'
Regards,
--
Rohit Manohar
Graduate Student
North Carolina State University
Raleigh, US.
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