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Commit 9a49aba1 authored by Mahesh Bandewar's avatar Mahesh Bandewar Committed by David S. Miller
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bonding: Reorg bond_alb_xmit code 



Separating the actual xmit part from the function in a separate
function that can be used in the tlb_xmit in the next patch. Also
there is no reason do_tx_balance to be an int so changing it to
bool type.

Change-Id: I9c48ff30487810f68587e621a191db616f49bd3b
Signed-off-by: default avatarMahesh Bandewar <maheshb@google.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ee62e868

drivers/net/bonding/bond_alb.c

+44 −35
Original line number Diff line number Diff line
@@ -1347,6 +1347,40 @@ void bond_alb_deinitialize(struct bonding *bond) 
		rlb_deinitialize(bond);

}



static int bond_do_alb_xmit(struct sk_buff *skb, struct bonding *bond,

		struct slave *tx_slave)

{

	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));

	struct ethhdr *eth_data = eth_hdr(skb);



	if (!tx_slave) {

		/* unbalanced or unassigned, send through primary */

		tx_slave = rcu_dereference(bond->curr_active_slave);

		bond_info->unbalanced_load += skb->len;

	}



	if (tx_slave && SLAVE_IS_OK(tx_slave)) {

		if (tx_slave != rcu_dereference(bond->curr_active_slave)) {

			ether_addr_copy(eth_data->h_source,

					tx_slave->dev->dev_addr);

		}



		bond_dev_queue_xmit(bond, skb, tx_slave->dev);

		goto out;

	}



	if (tx_slave) {

		_lock_tx_hashtbl(bond);

		__tlb_clear_slave(bond, tx_slave, 0);

		_unlock_tx_hashtbl(bond);

	}



	/* no suitable interface, frame not sent */

	dev_kfree_skb_any(skb);

out:

	return NETDEV_TX_OK;

}



int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)

{

	struct bonding *bond = netdev_priv(bond_dev);
@@ -1355,7 +1389,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
	struct slave *tx_slave = NULL;

	static const __be32 ip_bcast = htonl(0xffffffff);

	int hash_size = 0;

	int do_tx_balance = 1;

	bool do_tx_balance = true;

	u32 hash_index = 0;

	const u8 *hash_start = NULL;

	struct ipv6hdr *ip6hdr;
@@ -1370,7 +1404,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast) ||

		    (iph->daddr == ip_bcast) ||

		    (iph->protocol == IPPROTO_IGMP)) {

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}

		hash_start = (char *)&(iph->daddr);
@@ -1382,7 +1416,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		 * that here just in case.

		 */

		if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast)) {

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}
@@ -1390,7 +1424,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		 * broadcasts in IPv4.

		 */

		if (ether_addr_equal_64bits(eth_data->h_dest, mac_v6_allmcast)) {

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}
@@ -1400,7 +1434,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		 */

		ip6hdr = ipv6_hdr(skb);

		if (ipv6_addr_any(&ip6hdr->saddr)) {

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}
@@ -1410,7 +1444,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
	case ETH_P_IPX:

		if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) {

			/* something is wrong with this packet */

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}
@@ -1419,7 +1453,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
			 * this family since it has an "ARP" like

			 * mechanism

			 */

			do_tx_balance = 0;

			do_tx_balance = false;

			break;

		}
@@ -1427,12 +1461,12 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		hash_size = ETH_ALEN;

		break;

	case ETH_P_ARP:

		do_tx_balance = 0;

		do_tx_balance = false;

		if (bond_info->rlb_enabled)

			tx_slave = rlb_arp_xmit(skb, bond);

		break;

	default:

		do_tx_balance = 0;

		do_tx_balance = false;

		break;

	}
@@ -1441,32 +1475,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev) 
		tx_slave = tlb_choose_channel(bond, hash_index, skb->len);

	}



	if (!tx_slave) {

		/* unbalanced or unassigned, send through primary */

		tx_slave = rcu_dereference(bond->curr_active_slave);

		bond_info->unbalanced_load += skb->len;

	}



	if (tx_slave && SLAVE_IS_OK(tx_slave)) {

		if (tx_slave != rcu_dereference(bond->curr_active_slave)) {

			ether_addr_copy(eth_data->h_source,

					tx_slave->dev->dev_addr);

		}



		bond_dev_queue_xmit(bond, skb, tx_slave->dev);

		goto out;

	}



	if (tx_slave) {

		_lock_tx_hashtbl(bond);

		__tlb_clear_slave(bond, tx_slave, 0);

		_unlock_tx_hashtbl(bond);

	}



	/* no suitable interface, frame not sent */

	dev_kfree_skb_any(skb);

out:

	return NETDEV_TX_OK;

	return bond_do_alb_xmit(skb, bond, tx_slave);

}



void bond_alb_monitor(struct work_struct *work)