Thanks Ben!
I still have several question. Could you give further suggestion?
<1> All incoming network packet will be handler
by ovs_dp_process_received_packet(), right?
In ovs_dp_process_received_packet(), for the missing
packets, ovs_dp_upcall() will be called to send the OVS_PACKET_CMD_MISS
cmd, and further, the queue_userspace_packet() will be called. But where to
issue other cmds like OVS_PACKET_CMD_ACTION ?
<2> In queue_userspace_packet(), a nl msg is generated, where would the msg
be sent to? Or who is the handler? Seems it is a dp_packet_genl_family msg,
but there is only a handler for the OVS_PACKET_EXECUTE cmd.
<3> I grep the entire codes, but who is the handler to cmds
like OVS_PACKET_CMD_MISS and OVS_PACKET_CMD_ACTION. The ovs-vswitchd?
Could anyone give some hints? Thanks very much!
On Sat, Aug 18, 2012 at 12:03 AM, Ben Pfaff <b...@nicira.com> wrote:
> On Fri, Aug 17, 2012 at 04:50:57PM +0800, Baohua Yang wrote:
> > In the openvswitch code file include\linux\openvswitch.h, there's 4
> > defined cmds, as
> > enum ovs_packet_cmd{
> > OVS_PACKET_CMD_UNSPEC,
> > OVS_PACKET_CMD_MISS,
> > OVS_PACKET_CMD_ACTION,
> > OVS_PACKET_CMD_EXECUTE
> > }
> >
> > However, in datapath\datapath.c, there is only the handler for
> > the OVS_PACKET_CMD_EXECUTE command.
>
> The other commands are sent from the kernel to userspace.
>
--
Best wishes!
Baohua
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