[ovs-dev] [PATCHv2] dpif-linux: Lookup netdev to get netdev type string.

Joe Stringer joestringer at nicira.com
Tue Feb 18 22:26:26 UTC 2014

When creating tap ports in dpif-linux, the "tap" type is treated the
same as "system", and the type is discarded. When dumping datapath
port types, this would cause "tap" type to be reported as a "system"

Each time we see a port of the wrong type in bridge_reconfigure(), we
remove it and add a port with the correct configuration. This would
always occur for tap ports, causing deletion and re-creation of all tap
ports each time the bridge was reconfigured.

This patch makes dpif-linux use netdev to look up port types if the
datapath reports that they are of type OVS_VPORT_TYPE_NETDEV.

Bug #1196289.

Reported-by: James Schmidt <jschmidt at vmware.com>
Signed-off-by: Joe Stringer <joestringer at nicira.com>
v2: Fix the issue in dpif-linux instead of ofproto-dpif.
 lib/dpif-linux.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/dpif-linux.c b/lib/dpif-linux.c
index f7f5292..18de118 100644
--- a/lib/dpif-linux.c
+++ b/lib/dpif-linux.c
@@ -439,8 +439,11 @@ get_vport_type(const struct dpif_linux_vport *vport)
     static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
     switch (vport->type) {
-        return "system";
+        const char *type = netdev_get_type_from_name(vport->name);
+        return type ? type : "system";
+    }
         return "internal";

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