datapath: Fix multipart datapath dumps.

The logic to split up the list of datapaths into multiple Netlink messages
was simply wrong, causing the list to be terminated after the first part.
Only about the first 50 datapaths would be dumped.  This fixes the
problem.

Bug #9124.
Reported-by: Paul Ingram <paul@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>

diff --git a/datapath/datapath.c b/datapath/datapath.c
index 11a2a11..f8b795e 100644 (file)
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, 2008, 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012 Nicira Networks.
  * Distributed under the terms of the GNU GPL version 2.
  *
  * Significant portions of this file may be copied from parts of the Linux
@@ -1532,9 +1532,8 @@ static int ovs_dp_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
        int i = 0;
 
        list_for_each_entry (dp, &dps, list_node) {
-               if (i < skip)
-                       continue;
-               if (ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid,
+               if (i >= skip &&
+                   ovs_dp_cmd_fill_info(dp, skb, NETLINK_CB(cb->skb).pid,
                                         cb->nlh->nlmsg_seq, NLM_F_MULTI,
                                         OVS_DP_CMD_NEW) < 0)
                        break;