Merge branch 'bonding'

Ding Tianhong says:

====================
bonding: slight optimization for bonding

This serious of patches will slight optimize the mac address compare
and xmit path for bonding, also make some cleanups.

Julia was using ether_addr_equal_64bits to instead of ether_addr_equal,
it is really a hard work and she may did not make patch for bonding yet,
so I have do it in this patchset and that she could miss the bonding drivers.

resend and add cc for Julia.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_3ad.h

@@ -265,7 +265,7 @@ struct ad_slave_info {
 
 // ================= AD Exported functions to the main bonding code ==================
 void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
-int  bond_3ad_bind_slave(struct slave *slave);
+void  bond_3ad_bind_slave(struct slave *slave);
 void bond_3ad_unbind_slave(struct slave *slave);
 void bond_3ad_state_machine_handler(struct work_struct *);
 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);

drivers/net/bonding/bond_alb.c

@@ -1371,7 +1371,6 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
 	int do_tx_balance = 1;
 	u32 hash_index = 0;
 	const u8 *hash_start = NULL;
-	int res = 1;
 	struct ipv6hdr *ip6hdr;
 
 	skb_reset_mac_header(skb);
@@ -1469,7 +1468,8 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
 			       ETH_ALEN);
 		}
 
-		res = bond_dev_queue_xmit(bond, skb, tx_slave->dev);
+		bond_dev_queue_xmit(bond, skb, tx_slave->dev);
+		goto out;
 	} else {
 		if (tx_slave) {
 			_lock_tx_hashtbl(bond);
@@ -1478,11 +1478,9 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
 		}
 	}
 
-	if (res) {
-		/* no suitable interface, frame not sent */
-		kfree_skb(skb);
-	}
-
+	/* no suitable interface, frame not sent */
+	kfree_skb(skb);
+out:
 	return NETDEV_TX_OK;
 }
 

drivers/net/bonding/bond_main.c

@@ -304,7 +304,7 @@ const char *bond_mode_name(int mode)
  * @skb: hw accel VLAN tagged skb to transmit
  * @slave_dev: slave that is supposed to xmit this skbuff
  */
-int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
+void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
 			struct net_device *slave_dev)
 {
 	skb->dev = slave_dev;
@@ -317,8 +317,6 @@ int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
 		bond_netpoll_send_skb(bond_get_slave_by_dev(bond, slave_dev), skb);
 	else
 		dev_queue_xmit(skb);
-
-	return 0;
 }
 
 /*
@@ -1639,7 +1637,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 err_undo_flags:
 	/* Enslave of first slave has failed and we need to fix master's mac */
 	if (!bond_has_slaves(bond) &&
-	    ether_addr_equal(bond_dev->dev_addr, slave_dev->dev_addr))
+	    ether_addr_equal_64bits(bond_dev->dev_addr, slave_dev->dev_addr))
 		eth_hw_addr_random(bond_dev);
 
 	return res;
@@ -1712,7 +1710,7 @@ static int __bond_release_one(struct net_device *bond_dev,
 	bond->current_arp_slave = NULL;
 
 	if (!all && !bond->params.fail_over_mac) {
-		if (ether_addr_equal(bond_dev->dev_addr, slave->perm_hwaddr) &&
+		if (ether_addr_equal_64bits(bond_dev->dev_addr, slave->perm_hwaddr) &&
 		    bond_has_slaves(bond))
 			pr_warn("%s: Warning: the permanent HWaddr of %s - %pM - is still in use by %s. Set the HWaddr of %s to a different address to avoid conflicts.\n",
 				   bond_dev->name, slave_dev->name,
@@ -3673,28 +3671,24 @@ static inline int bond_slave_override(struct bonding *bond,
 				      struct sk_buff *skb)
 {
 	struct slave *slave = NULL;
-	struct slave *check_slave;
 	struct list_head *iter;
-	int res = 1;
 
 	if (!skb->queue_mapping)
 		return 1;
 
 	/* Find out if any slaves have the same mapping as this skb. */
-	bond_for_each_slave_rcu(bond, check_slave, iter) {
-		if (check_slave->queue_id == skb->queue_mapping) {
-			slave = check_slave;
+	bond_for_each_slave_rcu(bond, slave, iter) {
+		if (slave->queue_id == skb->queue_mapping) {
+			if (slave_can_tx(slave)) {
+				bond_dev_queue_xmit(bond, skb, slave->dev);
+				return 0;
+			}
+			/* If the slave isn't UP, use default transmit policy. */
 			break;
 		}
 	}
 
-	/* If the slave isn't UP, use default transmit policy. */
-	if (slave && slave->queue_id && IS_UP(slave->dev) &&
-	    (slave->link == BOND_LINK_UP)) {
-		res = bond_dev_queue_xmit(bond, skb, slave->dev);
-	}
-
-	return res;
+	return 1;
 }
 
 

drivers/net/bonding/bonding.h

@@ -416,7 +416,7 @@ static inline bool slave_can_tx(struct slave *slave)
 struct bond_net;
 
 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
-int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
+void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
 int bond_create(struct net *net, const char *name);
 int bond_create_sysfs(struct bond_net *net);
 void bond_destroy_sysfs(struct bond_net *net);