rtnl: use dev_set_mac_address() instead of plain ndo_

Benefit from existence of dev_set_mac_address() and remove duplicate
code.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 2ef7a56..78d05a9 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1310,7 +1310,6 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                      struct nlattr **tb, char *ifname, int modified)
 {
        const struct net_device_ops *ops = dev->netdev_ops;
-       int send_addr_notify = 0;
        int err;
 
        if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) {
@@ -1363,16 +1362,6 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                struct sockaddr *sa;
                int len;
 
-               if (!ops->ndo_set_mac_address) {
-                       err = -EOPNOTSUPP;
-                       goto errout;
-               }
-
-               if (!netif_device_present(dev)) {
-                       err = -ENODEV;
-                       goto errout;
-               }
-
                len = sizeof(sa_family_t) + dev->addr_len;
                sa = kmalloc(len, GFP_KERNEL);
                if (!sa) {
@@ -1382,13 +1371,11 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                sa->sa_family = dev->type;
                memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
                       dev->addr_len);
-               err = ops->ndo_set_mac_address(dev, sa);
+               err = dev_set_mac_address(dev, sa);
                kfree(sa);
                if (err)
                        goto errout;
-               send_addr_notify = 1;
                modified = 1;
-               add_device_randomness(dev->dev_addr, dev->addr_len);
        }
 
        if (tb[IFLA_MTU]) {
@@ -1425,7 +1412,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
 
        if (tb[IFLA_BROADCAST]) {
                nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
-               send_addr_notify = 1;
+               call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
        }
 
        if (ifm->ifi_flags || ifm->ifi_change) {
@@ -1546,9 +1533,6 @@ errout:
                net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
                                     dev->name);
 
-       if (send_addr_notify)
-               call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
-
        return err;
 }