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[NETPOLL]: no need to store local_mac

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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>
This commit is contained in:
Stephen Hemminger 2007-11-19 19:23:29 -08:00 committed by David S. Miller
parent 5106930bd6
commit 0953864160
3 changed files with 8 additions and 13 deletions
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10
drivers/net/netconsole.c
View File

@ -306,9 +306,11 @@ static ssize_t show_remote_ip(struct netconsole_target *nt, char *buf)
static ssize_t show_local_mac(struct netconsole_target *nt, char *buf) static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)
{ {
struct net_device *dev = nt->np.dev;
DECLARE_MAC_BUF(mac); DECLARE_MAC_BUF(mac);
return snprintf(buf, PAGE_SIZE, "%s\n", 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) static ssize_t show_remote_mac(struct netconsole_target *nt, char *buf)
@ -667,7 +669,7 @@ static int netconsole_netdev_event(struct notifier_block *this,
struct netconsole_target *nt; struct netconsole_target *nt;
struct net_device *dev = ptr; struct net_device *dev = ptr;
if (!(event == NETDEV_CHANGEADDR || event == NETDEV_CHANGENAME)) if (!(event == NETDEV_CHANGENAME))
goto done; goto done;
spin_lock_irqsave(&target_list_lock, flags); spin_lock_irqsave(&target_list_lock, flags);
@ -675,10 +677,6 @@ static int netconsole_netdev_event(struct notifier_block *this,
netconsole_target_get(nt); netconsole_target_get(nt);
if (nt->np.dev == dev) { if (nt->np.dev == dev) {
switch (event) { switch (event) {
case NETDEV_CHANGEADDR:
memcpy(nt->np.local_mac, dev->dev_addr, ETH_ALEN);
break;
case NETDEV_CHANGENAME: case NETDEV_CHANGENAME:
strlcpy(nt->np.dev_name, dev->name, IFNAMSIZ); strlcpy(nt->np.dev_name, dev->name, IFNAMSIZ);
break; break;

2
include/linux/netpoll.h
View File

@ -20,7 +20,7 @@ struct netpoll {
u32 local_ip, remote_ip; u32 local_ip, remote_ip;
u16 local_port, remote_port; u16 local_port, remote_port;
u8 local_mac[ETH_ALEN], remote_mac[ETH_ALEN]; u8 remote_mac[ETH_ALEN];
}; };
struct netpoll_info { struct netpoll_info {

9
net/core/netpoll.c
View File

@ -360,8 +360,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
eth = (struct ethhdr *) skb_push(skb, ETH_HLEN); eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
skb_reset_mac_header(skb); skb_reset_mac_header(skb);
skb->protocol = eth->h_proto = htons(ETH_P_IP); skb->protocol = eth->h_proto = htons(ETH_P_IP);
memcpy(eth->h_source, np->local_mac, 6); memcpy(eth->h_source, np->dev->dev_addr, ETH_ALEN);
memcpy(eth->h_dest, np->remote_mac, 6); memcpy(eth->h_dest, np->remote_mac, ETH_ALEN);
skb->dev = np->dev; skb->dev = np->dev;
@ -431,7 +431,7 @@ static void arp_reply(struct sk_buff *skb)
/* Fill the device header for the ARP frame */ /* Fill the device header for the ARP frame */
if (dev_hard_header(send_skb, skb->dev, ptype, if (dev_hard_header(send_skb, skb->dev, ptype,
sha, np->local_mac, sha, np->dev->dev_addr,
send_skb->len) < 0) { send_skb->len) < 0) {
kfree_skb(send_skb); kfree_skb(send_skb);
return; 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) { if (!np->local_ip) {
rcu_read_lock(); rcu_read_lock();
in_dev = __in_dev_get_rcu(ndev); in_dev = __in_dev_get_rcu(ndev);