void handle_dhcp()
{
fprintf(err, "Sleep for %d seconds...\n", ack_lease.renew_time);
sleep(ack_lease.renew_time);
memcpy(&offer_lease, &ack_lease, sizeof(struct lease));
renew = 1;
generate_xid();
next_state = REQUEST;
dhcp_request();
}
static xid_entry_t *
allocate_xid_entry( uint32_t original_xid, char *service_name, int index ) {
xid_entry_t *new_entry;
new_entry = xmalloc( sizeof ( xid_entry_t ) );
new_entry->xid = generate_xid();
new_entry->original_xid = original_xid;
new_entry->service_name = xstrdup( service_name );
new_entry->index = index;
return new_entry;
}
int
ofpmsg_send_featuresrequest( struct switch_info *sw_info ) {
int ret;
buffer *buf;
buf = create_features_request( generate_xid() );
ret = send_to_secure_channel( sw_info, buf );
if ( ret == 0 ) {
debug( "Send 'features request' to a switch. fd:%d", sw_info->secure_channel_fd );
}
return ret;
}
void init_dhcp()
{
timeout_count = TIMEOUT_RETRY_TIMES;
if (load_lease(&offer_lease)) {
renew = 1;
generate_xid();
next_state = REQUEST;
dhcp_request();
} else {
next_state = DISCOVER;
dhcp_discover();
}
}
int
ofpmsg_send_setconfig( struct switch_info *sw_info ) {
int ret;
buffer *buf;
buf = create_set_config( generate_xid(), sw_info->config_flags,
sw_info->miss_send_len );
ret = send_to_secure_channel( sw_info, buf );
if ( ret == 0 ) {
debug( "Send 'set config request' to a switch %#" PRIx64 ".", sw_info->datapath_id );
}
return ret;
}
int
ofpmsg_send_delete_all_flows( struct switch_info *sw_info ) {
int ret;
struct ofp_match match;
buffer *buf;
memset( &match, 0, sizeof( match ) );
match.wildcards = OFPFW_ALL;
buf = create_flow_mod( generate_xid(), match, RESERVED_COOKIE,
OFPFC_DELETE, 0, 0, 0, UINT32_MAX, OFPP_NONE, 0, NULL );
ret = send_to_secure_channel( sw_info, buf );
if ( ret == 0 ) {
debug( "Send 'flow mod (delete all)' to a switch %#" PRIx64 ".", sw_info->datapath_id );
}
return ret;
}
int
ofpmsg_send_error_msg( struct switch_info *sw_info, uint16_t type, uint16_t code, buffer *data ) {
int ret;
buffer *buf;
if (data->length > OFP_ERROR_MSG_MAX_DATA ) {
// FIXME
data->length = OFP_ERROR_MSG_MAX_DATA;
}
buf = create_error( generate_xid(), type, code, data );
ret = send_to_secure_channel( sw_info, buf );
if ( ret == 0 ) {
debug( "Send 'error' to a switch %#" PRIx64 ".", sw_info->datapath_id );
}
return ret;
}
void dhcp_discover()
{
if (next_state != DISCOVER) {
fprintf(err, "State is not DISCOVER!\n");
return;
}
fprintf(err, "dhcp_discover()...\n");
generate_xid();
renew = 0;
int len;
struct dhcp_packet *packet = make_packet(&len);
send_packet((char*)packet, len);
free(packet);
next_state = OFFER;
dhcp_offer();
}
int
cc_send_features_request( sw_info* cc_sw_info,buffer* buf )
{
int ret;
buffer *buf;
/*NOTICE! here we should add the ofp_pull, to get out of the
*exactly ofp msg
*/
//ofpbuf_pull(buf,ofp_msg);
buf = cc_create_features_request( generate_xid() );
ret = cc_send_to_secure_channel( sw_info, buf );
if ( ret == 0 ) {
//debug( "Send 'features request' to a switch. fd:%d", sw_info->secure_channel_fd );
}
free_buffer()
return ret;
}
static void
echo_request_interval( void *user_data ) {
struct switch_info *sw_info = user_data;
buffer *buf = alloc_buffer();
echo_body *body = append_back_buffer( buf, sizeof( echo_body ) );
body->datapath_id = htonll( switch_info.datapath_id );
struct timespec now;
clock_gettime( CLOCK_MONOTONIC, &now );
body->sec = htonl( ( uint32_t ) now.tv_sec );
body->nsec = htonl( ( uint32_t ) now.tv_nsec );
sw_info->echo_request_xid = generate_xid();
int err = ofpmsg_send_echorequest( sw_info, sw_info->echo_request_xid, buf );
if ( err < 0 ) {
switch_event_disconnected( &switch_info );
return;
}
switch_set_timeout( ECHO_REPLY_TIMEOUT, echo_reply_timeout, NULL );
}