Jun Nakajima jun.nakajima@intel.com
Justin Pettit jpettit@nicira.com
Keith Amidon keith@nicira.com
+Krishna Kondaka kkondaka@vmware.com
Kyle Mestery kmestery@cisco.com
Leo Alterman lalterman@nicira.com
Luca Giraudo lgiraudo@nicira.com
alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
{
uint16_t ofp_port;
+ uint16_t end_port_no = ofproto->alloc_port_no;
ofp_port = simap_get(&ofproto->ofp_requests, netdev_name);
ofp_port = ofp_port ? ofp_port : OFPP_NONE;
if (ofp_port >= ofproto->max_ports
|| bitmap_is_set(ofproto->ofp_port_ids, ofp_port)) {
- bool retry = ofproto->alloc_port_no ? true : false;
-
/* Search for a free OpenFlow port number. We try not to
* immediately reuse them to prevent problems due to old
* flows. */
- while (ofp_port >= ofproto->max_ports) {
- for (ofproto->alloc_port_no++;
- ofproto->alloc_port_no < ofproto->max_ports;
- ofproto->alloc_port_no++) {
- if (!bitmap_is_set(ofproto->ofp_port_ids,
- ofproto->alloc_port_no)) {
- ofp_port = ofproto->alloc_port_no;
- break;
- }
+ for (;;) {
+ if (++ofproto->alloc_port_no >= ofproto->max_ports) {
+ ofproto->alloc_port_no = 0;
}
- if (ofproto->alloc_port_no >= ofproto->max_ports) {
- if (retry) {
- ofproto->alloc_port_no = 0;
- retry = false;
- } else {
- return OFPP_NONE;
- }
+ if (!bitmap_is_set(ofproto->ofp_port_ids,
+ ofproto->alloc_port_no)) {
+ ofp_port = ofproto->alloc_port_no;
+ break;
+ }
+ if (ofproto->alloc_port_no == end_port_no) {
+ return OFPP_NONE;
}
}
}
-
bitmap_set1(ofproto->ofp_port_ids, ofp_port);
return ofp_port;
}