dcbnl: make get_app handling symmetric for IEEE and CEE DCBx

The IEEE get/set app handlers use generic routines and do not
require the net_device to implement the dcbnl_ops routines. This
patch makes it symmetric so user space and drivers do not have
to handle the CEE version and IEEE DCBx versions differently.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index d900ab9..6b03f56 100644 (file)
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -583,7 +583,7 @@ static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
        u8 up, idtype;
        int ret = -EINVAL;
 
-       if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->getapp)
+       if (!tb[DCB_ATTR_APP])
                goto out;
 
        ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
@@ -604,7 +604,16 @@ static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
                goto out;
 
        id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
-       up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
+
+       if (netdev->dcbnl_ops->getapp) {
+               up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
+       } else {
+               struct dcb_app app = {
+                                       .selector = idtype,
+                                       .protocol = id,
+                                    };
+               up = dcb_getapp(netdev, &app);
+       }
 
        /* send this back */
        dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);