[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>
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 5ffbb88..31e047d 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -306,9 +306,11 @@
static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)
{
+ struct net_device *dev = nt->np.dev;
+
DECLARE_MAC_BUF(mac);
return snprintf(buf, PAGE_SIZE, "%s\n",
- print_mac(mac, nt->np.local_mac));
+ print_mac(mac, dev->dev_addr));
}
static ssize_t show_remote_mac(struct netconsole_target *nt, char *buf)
@@ -667,7 +669,7 @@
struct netconsole_target *nt;
struct net_device *dev = ptr;
- if (!(event == NETDEV_CHANGEADDR || event == NETDEV_CHANGENAME))
+ if (!(event == NETDEV_CHANGENAME))
goto done;
spin_lock_irqsave(&target_list_lock, flags);
@@ -675,10 +677,6 @@
netconsole_target_get(nt);
if (nt->np.dev == dev) {
switch (event) {
- case NETDEV_CHANGEADDR:
- memcpy(nt->np.local_mac, dev->dev_addr, ETH_ALEN);
- break;
-
case NETDEV_CHANGENAME:
strlcpy(nt->np.dev_name, dev->name, IFNAMSIZ);
break;
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 20250d9..e3d7959 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -20,7 +20,7 @@
u32 local_ip, remote_ip;
u16 local_port, remote_port;
- u8 local_mac[ETH_ALEN], remote_mac[ETH_ALEN];
+ u8 remote_mac[ETH_ALEN];
};
struct netpoll_info {
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 250868f..cf6acd3 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -360,8 +360,8 @@
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 @@
/* 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 @@
}
}
- 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);