[NETPOLL]: no need to store local_mac

The local_mac is managed by the network device, no need to keep a
spare copy and all the management problems that could cause.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 6 deletions

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 250868f68762..cf6acd3084a4 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -360,8 +360,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
         eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
         skb_reset_mac_header(skb);
         skb->protocol = eth->h_proto = htons(ETH_P_IP);
-        memcpy(eth->h_source, np->local_mac, 6);
-        memcpy(eth->h_dest, np->remote_mac, 6);
+        memcpy(eth->h_source, np->dev->dev_addr, ETH_ALEN);
+        memcpy(eth->h_dest, np->remote_mac, ETH_ALEN);
 
         skb->dev = np->dev;
 
@@ -431,7 +431,7 @@ static void arp_reply(struct sk_buff *skb)
 
         /* Fill the device header for the ARP frame */
         if (dev_hard_header(send_skb, skb->dev, ptype,
-                            sha, np->local_mac,
+                            sha, np->dev->dev_addr,
                             send_skb->len) < 0) {
                 kfree_skb(send_skb);
                 return;
@@ -737,9 +737,6 @@ int netpoll_setup(struct netpoll *np)
                 }
         }
 
-        if (is_zero_ether_addr(np->local_mac) && ndev->dev_addr)
-                memcpy(np->local_mac, ndev->dev_addr, 6);
-
         if (!np->local_ip) {
                 rcu_read_lock();
                 in_dev = __in_dev_get_rcu(ndev);