[ovs-dev] [PATCH v1] netdev-vport : Fix userspace tunnel ioctl(SIOCGIFINDEX) info logs.

[lin huang]

From: linhuang <linhuang at ruijie.com.cn>

Userspace tunnel doesn't have a valid device in the kernel. So
get_ifindex() function (ioctl) always get error during
adding a port, deleting a port or updating a port status.

The info log is
"2021-08-29T09:17:39.830Z|00059|netdev_linux|INFO|ioctl(SIOCGIFINDEX)
on vxlan_sys_4789 device failed: No such device"

If there are a lot of userspace tunnel ports on a bridge, the
iface_refresh_netdev_status() function will spend a lot of time.

So ignore userspace tunnel port ioctl(SIOCGIFINDEX) operation, just
return ifindex=0.

Signed-off-by: linhuang <linhuang at ruijie.com.cn>
---
 lib/netdev-offload.c | 6 ++++--
 lib/netdev-vport.c   | 3 ++-
 vswitchd/bridge.c    | 2 ++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/lib/netdev-offload.c b/lib/netdev-offload.c
index 8075cfbd8..00b7515cf 100644
--- a/lib/netdev-offload.c
+++ b/lib/netdev-offload.c
@@ -577,7 +577,9 @@ netdev_ports_insert(struct netdev *netdev, const char *dpif_type,
                     struct dpif_port *dpif_port)
 {
     struct port_to_netdev_data *data;
-    int ifindex = netdev_get_ifindex(netdev);
+    int ifindex;
+
+    netdev_set_dpif_type(netdev, dpif_type);
 
     ovs_rwlock_wrlock(&netdev_hmap_rwlock);
     if (netdev_ports_lookup(dpif_port->port_no, dpif_type)) {
@@ -589,6 +591,7 @@ netdev_ports_insert(struct netdev *netdev, const char *dpif_type,
     data->netdev = netdev_ref(netdev);
     dpif_port_clone(&data->dpif_port, dpif_port);
 
+    ifindex = netdev_get_ifindex(netdev);
     if (ifindex >= 0) {
         data->ifindex = ifindex;
         hmap_insert(&ifindex_to_port, &data->ifindex_node, ifindex);
@@ -596,7 +599,6 @@ netdev_ports_insert(struct netdev *netdev, const char *dpif_type,
         data->ifindex = -1;
     }
 
-    netdev_set_dpif_type(netdev, dpif_type);
 
     hmap_insert(&port_to_netdev, &data->portno_node,
                 netdev_ports_hash(dpif_port->port_no, dpif_type));
diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index 499c0291c..411ac343a 100644
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -1151,8 +1151,9 @@ netdev_vport_get_ifindex(const struct netdev *netdev_)
 {
     char buf[NETDEV_VPORT_NAME_BUFSIZE];
     const char *name = netdev_vport_get_dpif_port(netdev_, buf, sizeof(buf));
+    const char *type = netdev_get_dpif_type(netdev_);
 
-    return linux_get_ifindex(name);
+    return (strcmp(type, "netdev")) ? linux_get_ifindex(name) : -ENODEV;
 }
 
 #define NETDEV_VPORT_GET_IFINDEX netdev_vport_get_ifindex
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index c790a56ad..473d79acd 100644
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -2052,6 +2052,8 @@ iface_do_create(const struct bridge *br,
         goto error;
     }
 
+    netdev_set_dpif_type(netdev, br->type);
+
     error = iface_set_netdev_config(iface_cfg, netdev, errp);
     if (error) {
         goto error;
-- 
2.12.2