From: Gurucharan Shetty <gshetty@nicira.com>
Date: Tue, 20 Nov 2012 11:18:11 +0000 (-0800)
Subject: ofproto: Fix ofport allocation.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff_plain;h=4780f13745796a22ac1971bb9bf90a39317d7094

ofproto: Fix ofport allocation.

Currently running the following 3 commands results
in vswitchd running in an infinite loop.

ovs-vsctl add-port br1 port1 -- set interface port1 \
type=internal ofport_request=1
ovs-vsctl add-port br1 port2 -- set interface port2 \
type=internal ofport_request=2
ovs-vsctl add-port br1 port3 -- set interface port3 \
type=internal

This patch lets us go through all the possible ofport
values to find a free ofport.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
---

diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c
index 182da633..8bc9b590 100644
--- a/ofproto/ofproto.c
+++ b/ofproto/ofproto.c
@@ -1666,7 +1666,8 @@ alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
          * flows. */
         while (ofp_port >= ofproto->max_ports) {
             for (ofproto->alloc_port_no++;
-                 ofproto->alloc_port_no < ofproto->max_ports; ) {
+                 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;