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Message-Id: <675e6a59ebb87d5e18633df578a62a1202f6172e.1392748500.git.joe@perches.com>
Date: Tue, 18 Feb 2014 10:37:20 -0800
From: Joe Perches <joe@...ches.com>
To: netdev@...r.kernel.org
Cc: Arvid Brodin <arvid.brodin@...en.se>,
"David S. Miller" <davem@...emloft.net>,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next] hsr: Use ether_addr_copy
It's slightly smaller/faster for some architectures.
Make sure def_multicast_addr is __aligned(2)
Signed-off-by: Joe Perches <joe@...ches.com>
---
net/hsr/hsr_device.c | 10 +++++-----
net/hsr/hsr_framereg.c | 20 ++++++++++----------
net/hsr/hsr_main.c | 4 ++--
3 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index cac505f..e5302b7 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -209,7 +209,7 @@ static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
/* Address substitution (IEC62439-3 pp 26, 50): replace mac
* address of outgoing frame with that of the outgoing slave's.
*/
- memcpy(hsr_ethhdr->ethhdr.h_source, skb->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(hsr_ethhdr->ethhdr.h_source, skb->dev->dev_addr);
return dev_queue_xmit(skb);
}
@@ -346,7 +346,7 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
/* Payload: MacAddressA */
hsr_sp = (typeof(hsr_sp)) skb_put(skb, sizeof(*hsr_sp));
- memcpy(hsr_sp->MacAddressA, hsr_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(hsr_sp->MacAddressA, hsr_dev->dev_addr);
dev_queue_xmit(skb);
return;
@@ -493,7 +493,7 @@ static int check_slave_ok(struct net_device *dev)
/* Default multicast address for HSR Supervision frames */
-static const unsigned char def_multicast_addr[ETH_ALEN] = {
+static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
0x01, 0x15, 0x4e, 0x00, 0x01, 0x00
};
@@ -519,7 +519,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
hsr_priv->announce_timer.function = hsr_announce;
hsr_priv->announce_timer.data = (unsigned long) hsr_priv;
- memcpy(hsr_priv->sup_multicast_addr, def_multicast_addr, ETH_ALEN);
+ ether_addr_copy(hsr_priv->sup_multicast_addr, def_multicast_addr);
hsr_priv->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
/* FIXME: should I modify the value of these?
@@ -547,7 +547,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
hsr_dev->features |= NETIF_F_VLAN_CHALLENGED;
/* Set hsr_dev's MAC address to that of mac_slave1 */
- memcpy(hsr_dev->dev_addr, hsr_priv->slave[0]->dev_addr, ETH_ALEN);
+ ether_addr_copy(hsr_dev->dev_addr, hsr_priv->slave[0]->dev_addr);
/* Set required header length */
for (i = 0; i < HSR_MAX_SLAVE; i++) {
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 327060c..3d0100f 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -108,8 +108,8 @@ int hsr_create_self_node(struct list_head *self_node_db,
if (!node)
return -ENOMEM;
- memcpy(node->MacAddressA, addr_a, ETH_ALEN);
- memcpy(node->MacAddressB, addr_b, ETH_ALEN);
+ ether_addr_copy(node->MacAddressA, addr_a);
+ ether_addr_copy(node->MacAddressB, addr_b);
rcu_read_lock();
oldnode = list_first_or_null_rcu(self_node_db,
@@ -199,7 +199,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
/* Node is known, but frame was received from an unknown
* address. Node is PICS_SUBS capable; merge its AddrB.
*/
- memcpy(node->MacAddressB, hsr_ethsup->ethhdr.h_source, ETH_ALEN);
+ ether_addr_copy(node->MacAddressB, hsr_ethsup->ethhdr.h_source);
node->AddrB_if = dev_idx;
return node;
}
@@ -208,8 +208,8 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
if (!node)
return NULL;
- memcpy(node->MacAddressA, hsr_sp->MacAddressA, ETH_ALEN);
- memcpy(node->MacAddressB, hsr_ethsup->ethhdr.h_source, ETH_ALEN);
+ ether_addr_copy(node->MacAddressA, hsr_sp->MacAddressA);
+ ether_addr_copy(node->MacAddressB, hsr_ethsup->ethhdr.h_source);
if (!ether_addr_equal(hsr_sp->MacAddressA, hsr_ethsup->ethhdr.h_source))
node->AddrB_if = dev_idx;
else
@@ -250,7 +250,7 @@ void hsr_addr_subst_source(struct hsr_priv *hsr_priv, struct sk_buff *skb)
rcu_read_lock();
node = find_node_by_AddrB(&hsr_priv->node_db, ethhdr->h_source);
if (node)
- memcpy(ethhdr->h_source, node->MacAddressA, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_source, node->MacAddressA);
rcu_read_unlock();
}
@@ -272,7 +272,7 @@ void hsr_addr_subst_dest(struct hsr_priv *hsr_priv, struct ethhdr *ethhdr,
rcu_read_lock();
node = find_node_by_AddrA(&hsr_priv->node_db, ethhdr->h_dest);
if (node && (node->AddrB_if == dev_idx))
- memcpy(ethhdr->h_dest, node->MacAddressB, ETH_ALEN);
+ ether_addr_copy(ethhdr->h_dest, node->MacAddressB);
rcu_read_unlock();
}
@@ -428,13 +428,13 @@ void *hsr_get_next_node(struct hsr_priv *hsr_priv, void *_pos,
node = list_first_or_null_rcu(&hsr_priv->node_db,
struct node_entry, mac_list);
if (node)
- memcpy(addr, node->MacAddressA, ETH_ALEN);
+ ether_addr_copy(addr, node->MacAddressA);
return node;
}
node = _pos;
list_for_each_entry_continue_rcu(node, &hsr_priv->node_db, mac_list) {
- memcpy(addr, node->MacAddressA, ETH_ALEN);
+ ether_addr_copy(addr, node->MacAddressA);
return node;
}
@@ -462,7 +462,7 @@ int hsr_get_node_data(struct hsr_priv *hsr_priv,
return -ENOENT; /* No such entry */
}
- memcpy(addr_b, node->MacAddressB, ETH_ALEN);
+ ether_addr_copy(addr_b, node->MacAddressB);
tdiff = jiffies - node->time_in[HSR_DEV_SLAVE_A];
if (node->time_in_stale[HSR_DEV_SLAVE_A])
diff --git a/net/hsr/hsr_main.c b/net/hsr/hsr_main.c
index af68dd8..10010c5 100644
--- a/net/hsr/hsr_main.c
+++ b/net/hsr/hsr_main.c
@@ -138,8 +138,8 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
break;
if (dev == hsr_priv->slave[0])
- memcpy(hsr_priv->dev->dev_addr,
- hsr_priv->slave[0]->dev_addr, ETH_ALEN);
+ ether_addr_copy(hsr_priv->dev->dev_addr,
+ hsr_priv->slave[0]->dev_addr);
/* Make sure we recognize frames from ourselves in hsr_rcv() */
res = hsr_create_self_node(&hsr_priv->self_node_db,
--
1.8.1.2.459.gbcd45b4.dirty
--
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