Hi Ben, I thought controllers didn’t have access to the complete packet but just the (packet_in msgs), so I was told to implement this in the switches and use the controller just as the “brain”. I’d much rather work on a controller to be honest, however, do you not think its doable at all in OVS?
Cheers, Luca From: Ben Pfaff<mailto:b...@ovn.org> Sent: Friday, June 5, 2020 21:32 To: Luca Mancini<mailto:luca.manc...@outlook.com> Cc: Gregory Rose<mailto:gvrose8...@gmail.com>; ovs-discuss@openvswitch.org<mailto:ovs-discuss@openvswitch.org> Subject: Re: [ovs-discuss] DP_Packet Payload Modification On Fri, Jun 05, 2020 at 05:56:54PM +0000, Luca Mancini wrote: > Basically, I’m implementing a custom action which is meant to buffer > an x amount of dp_packets that match a certain flow, and then send a > new packet directly from the switch, containing the buffer of packets, > as its payload. At some other switch this payload is then meant to be > extracted so that I can retrieve the buffer of dp_packets and send the > single packets contained in the buffer to the correct hosts. > > My action is implemented in userspace only for now since efficiency > isn’t a concern for me atm. I already implemented the buffering > mechanism and it works, and now I’m trying to create this custom udp > packet so that I can store the buffer in it. For now I’m only trying > to create a dummy udp packet with a “hello world” string as its > payload just to see if I can create this custom packet however I just > can’t figure out what I’m missing. My most recent attempt is the > following I'd use a local controller for this. Then you don't have to implement anything in OVS at all.
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