On Mon, Mar 27, 2017 at 09:08:32PM +0200, Adam Paul Rzyska wrote:
> Hello,
>
> in the last weeks I tried to exchange custom openflow messages (type
> experimenter) between a controller (ONOS) and a switch (Open vSwitch). The
> controller sends a really simple of-msg:
>
> struct my_custom_struct : of_nicira_header {
> uint8_t version;
> uint8_t type == 4;
> uint16_t length;
> uint32_t xid;
> uint32_t experimenter == 0x00002320;
> uint32_t subtype == 0x0080;
> };
>
> In wireshark and OVS it is possible to see, that the switch receives my
> custom messages. I've added ofpraw and oftype in ofp-msgs.h. My
> request_method have been added to ofproto.c and also into the switch case.
> It works fine with a simple VLOG_INFO() output. Every time the switch
> receive my custom message a VLOG_INFO-message pops up into the logging file
> of OVS. But as soon as I'm trying to implement a reply/replies a error
> occurs, which crash's the vswichd (demon). This results in disconnecting the
> switch from the controller.
>
> Error message: 2017-02-05T12:09:02Z|00225|ofp_msgs|WARN|unknown OpenFlow
> message (version 4, type 19, stat 0, vendor 0x2320, subtype 80)
>
> I know exactly where it happens, but I don't know why... It starts with
> ofpmp_init() in my method.
Can you post a backtrace from GDB? Have you tried running ovs-vswitchd
under valgrind?
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