Hi all:
I'm a new comer of NOX, and want to know the mechanism of NOX, so i see
the codes of hub.cc at the beginning. There are some questions that perplex me
for a long time which i list as follows.
1) if (buffer_id == UINT32_MAX) {
size_t data_len = pi.get_buffer()->size();
size_t total_len = pi.total_len;
if (total_len == data_len) {
send_openflow_packet(pi.datapath_id, *pi.get_buffer(),
OFPP_FLOOD, pi.in_port, true);
} else {
/* Control path didn't buffer the packet and didn't send us
* the whole thing--what gives? */
lg.dbg("total_len=%zu data_len=%zu\n", total_len, data_len);
}tion
There codes are in src/nox/coreapps/hub/hub.cc file. what is the function of
them?do they effect the function of hub.cc if remove ?
2) what is the difference between "int send_openflow_command()" and "int
send_openflow_packet()" which defined in src/nox/component.hh. I know both are
used for interacting with OF switch.
3)The type of controller/switch message contains OFPT_PACKET_OUT and
OFPT_FLOW_MOD. I think both of them are used to add/delete/modify flow table
entry in OF switch, am i right? I don't know what is the difference even if
refer to openflow-spec-1.0.0
would you like to tell me? Thank you very much, look forward to hear from
you~
Best Wishes
Wang Jian
Saturday, December 31,
2011
_______________________________________________
nox-dev mailing list
nox-dev@noxrepo.org
http://noxrepo.org/mailman/listinfo/nox-dev
