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Subject[PATCH net-next 4/4] bonding: Convert memcpy(foo, bar, ETH_ALEN) to ether_addr_copy(foo, bar)
Date
ether_addr_copy is smaller and faster for some architectures.

This relies on a stack frame being at least __aligned(2)
for one use of an Ethernet address on the stack.

Signed-off-by: Joe Perches <joe@perches.com>
---
drivers/net/bonding/bond_3ad.c | 8 ++++----
drivers/net/bonding/bond_alb.c | 30 +++++++++++++++---------------
drivers/net/bonding/bond_main.c | 12 ++++++------
3 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index f6eda2d..e9edd84 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -768,11 +768,11 @@ static int ad_lacpdu_send(struct port *port)

lacpdu_header = (struct lacpdu_header *)skb_put(skb, length);

- memcpy(lacpdu_header->hdr.h_dest, lacpdu_mcast_addr, ETH_ALEN);
+ ether_addr_copy(lacpdu_header->hdr.h_dest, lacpdu_mcast_addr);
/* Note: source address is set to be the member's PERMANENT address,
* because we use it to identify loopback lacpdus in receive.
*/
- memcpy(lacpdu_header->hdr.h_source, slave->perm_hwaddr, ETH_ALEN);
+ ether_addr_copy(lacpdu_header->hdr.h_source, slave->perm_hwaddr);
lacpdu_header->hdr.h_proto = PKT_TYPE_LACPDU;

lacpdu_header->lacpdu = port->lacpdu;
@@ -810,11 +810,11 @@ static int ad_marker_send(struct port *port, struct bond_marker *marker)

marker_header = (struct bond_marker_header *)skb_put(skb, length);

- memcpy(marker_header->hdr.h_dest, lacpdu_mcast_addr, ETH_ALEN);
+ ether_addr_copy(marker_header->hdr.h_dest, lacpdu_mcast_addr);
/* Note: source address is set to be the member's PERMANENT address,
* because we use it to identify loopback MARKERs in receive.
*/
- memcpy(marker_header->hdr.h_source, slave->perm_hwaddr, ETH_ALEN);
+ ether_addr_copy(marker_header->hdr.h_source, slave->perm_hwaddr);
marker_header->hdr.h_proto = PKT_TYPE_LACPDU;

marker_header->marker = *marker;
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index e9f0a98..538913e 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -333,7 +333,7 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
(client_info->ip_dst == arp->ip_src) &&
(!ether_addr_equal_64bits(client_info->mac_dst, arp->mac_src))) {
/* update the clients MAC address */
- memcpy(client_info->mac_dst, arp->mac_src, ETH_ALEN);
+ ether_addr_copy(client_info->mac_dst, arp->mac_src);
client_info->ntt = 1;
bond_info->rx_ntt = 1;
}
@@ -669,9 +669,9 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
/* the entry is already assigned to this client */
if (!ether_addr_equal_64bits(arp->mac_dst, mac_bcast)) {
/* update mac address from arp */
- memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN);
+ ether_addr_copy(client_info->mac_dst, arp->mac_dst);
}
- memcpy(client_info->mac_src, arp->mac_src, ETH_ALEN);
+ ether_addr_copy(client_info->mac_src, arp->mac_src);

assigned_slave = client_info->slave;
if (assigned_slave) {
@@ -711,8 +711,8 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
* will be updated with clients actual unicast mac address
* upon receiving an arp reply.
*/
- memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN);
- memcpy(client_info->mac_src, arp->mac_src, ETH_ALEN);
+ ether_addr_copy(client_info->mac_dst, arp->mac_dst);
+ ether_addr_copy(client_info->mac_src, arp->mac_src);
client_info->slave = assigned_slave;

if (!ether_addr_equal_64bits(client_info->mac_dst, mac_bcast)) {
@@ -763,7 +763,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
*/
tx_slave = rlb_choose_channel(skb, bond);
if (tx_slave)
- memcpy(arp->mac_src, tx_slave->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(arp->mac_src, tx_slave->dev->dev_addr);
pr_debug("Server sent ARP Reply packet\n");
} else if (arp->op_code == htons(ARPOP_REQUEST)) {
/* Create an entry in the rx_hashtbl for this client as a
@@ -1003,8 +1003,8 @@ static void alb_send_lp_vid(struct slave *slave, u8 mac_addr[],
char *data;

memset(&pkt, 0, size);
- memcpy(pkt.mac_dst, mac_addr, ETH_ALEN);
- memcpy(pkt.mac_src, mac_addr, ETH_ALEN);
+ ether_addr_copy(pkt.mac_dst, mac_addr);
+ ether_addr_copy(pkt.mac_src, mac_addr);
pkt.type = cpu_to_be16(ETH_P_LOOP);

skb = dev_alloc_skb(size);
@@ -1086,7 +1086,7 @@ static void alb_swap_mac_addr(struct slave *slave1, struct slave *slave2)
{
u8 tmp_mac_addr[ETH_ALEN];

- memcpy(tmp_mac_addr, slave1->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(tmp_mac_addr, slave1->dev->dev_addr);
alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr);
alb_set_slave_mac_addr(slave2, tmp_mac_addr);

@@ -1283,12 +1283,12 @@ static int alb_set_mac_address(struct bonding *bond, void *addr)

bond_for_each_slave(bond, slave, iter) {
/* save net_device's current hw address */
- memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(tmp_addr, slave->dev->dev_addr);

res = dev_set_mac_address(slave->dev, addr);

/* restore net_device's hw address */
- memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+ ether_addr_copy(slave->dev->dev_addr, tmp_addr);

if (res)
goto unwind;
@@ -1304,9 +1304,9 @@ unwind:
bond_for_each_slave(bond, rollback_slave, iter) {
if (rollback_slave == slave)
break;
- memcpy(tmp_addr, rollback_slave->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(tmp_addr, rollback_slave->dev->dev_addr);
dev_set_mac_address(rollback_slave->dev, &sa);
- memcpy(rollback_slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+ ether_addr_copy(rollback_slave->dev->dev_addr, tmp_addr);
}

return res;
@@ -1704,14 +1704,14 @@ void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave
struct sockaddr sa;
u8 tmp_addr[ETH_ALEN];

- memcpy(tmp_addr, new_slave->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(tmp_addr, new_slave->dev->dev_addr);

memcpy(sa.sa_data, bond->dev->dev_addr, bond->dev->addr_len);
sa.sa_family = bond->dev->type;
/* we don't care if it can't change its mac, best effort */
dev_set_mac_address(new_slave->dev, &sa);

- memcpy(new_slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+ ether_addr_copy(new_slave->dev->dev_addr, tmp_addr);
}

/* curr_active_slave must be set before calling alb_swap_mac_addr */
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 90994ed..3bce855 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -673,12 +673,12 @@ static void bond_do_fail_over_mac(struct bonding *bond,
write_unlock_bh(&bond->curr_slave_lock);

if (old_active) {
- memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(tmp_mac, new_active->dev->dev_addr);
memcpy(saddr.sa_data, old_active->dev->dev_addr,
ETH_ALEN);
saddr.sa_family = new_active->dev->type;
} else {
- memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(saddr.sa_data, bond->dev->dev_addr);
saddr.sa_family = bond->dev->type;
}

@@ -692,7 +692,7 @@ static void bond_do_fail_over_mac(struct bonding *bond,
if (!old_active)
goto out;

- memcpy(saddr.sa_data, tmp_mac, ETH_ALEN);
+ ether_addr_copy(saddr.sa_data, tmp_mac);
saddr.sa_family = old_active->dev->type;

rv = dev_set_mac_address(old_active->dev, &saddr);
@@ -1316,7 +1316,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
* that need it, and for restoring it upon release, and then
* set it to the master's address
*/
- memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(new_slave->perm_hwaddr, slave_dev->dev_addr);

if (!bond->params.fail_over_mac ||
bond->params.mode != BOND_MODE_ACTIVEBACKUP) {
@@ -1587,7 +1587,7 @@ err_restore_mac:
* MAC if this slave's MAC is in use by the bond, or at
* least print a warning.
*/
- memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN);
+ ether_addr_copy(addr.sa_data, new_slave->perm_hwaddr);
addr.sa_family = slave_dev->type;
dev_set_mac_address(slave_dev, &addr);
}
@@ -1776,7 +1776,7 @@ static int __bond_release_one(struct net_device *bond_dev,
if (bond->params.fail_over_mac != BOND_FOM_ACTIVE ||
bond->params.mode != BOND_MODE_ACTIVEBACKUP) {
/* restore original ("permanent") mac address */
- memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
+ ether_addr_copy(addr.sa_data, slave->perm_hwaddr);
addr.sa_family = slave_dev->type;
dev_set_mac_address(slave_dev, &addr);
}
--
1.8.1.2.459.gbcd45b4.dirty


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