netdev - [PATCH 2/5] bonding: bond_change_active_slave() cleanup under active-backup

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Date:	Fri, 13 Jun 2008 18:12:01 -0700
From:	Jay Vosburgh <fubar@...ibm.com>
To:	netdev@...r.kernel.org
Cc:	Jeff Garzik <jgarzik@...ox.com>,
	David Miller <davem@...emloft.net>,
	Or Gerlitz <ogerlitz@...taire.com>,
	Jay Vosburgh <fubar@...ibm.com>
Subject: [PATCH 2/5] bonding: bond_change_active_slave() cleanup under active-backup

From: Or Gerlitz <ogerlitz@...taire.com>

simplified the code of bond_change_active_slave() such that under
active-backup mode there's one "if (new_active)" test and the rest
of the code only does extra checks on top of it. This removed an
unneeded "if (bond->send_grat_arp > 0)" check and avoid calling
bond_send_gratuitous_arp when there's no active slave.

Jay Vosburgh made minor coding style changes to the orignal patch.

Signed-off-by: Or Gerlitz <ogerlitz@...taire.com>
Signed-off-by: Jay Vosburgh <fubar@...ibm.com>
---
 drivers/net/bonding/bond_main.c |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 5b4af3c..2db2d05 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1189,21 +1189,19 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
 
 		if (new_active) {
 			bond_set_slave_active_flags(new_active);
-		}
 
-		if (new_active && bond->params.fail_over_mac)
-			bond_do_fail_over_mac(bond, new_active, old_active);
+			if (bond->params.fail_over_mac)
+				bond_do_fail_over_mac(bond, new_active,
+						      old_active);
 
-		bond->send_grat_arp = bond->params.num_grat_arp;
-		if (bond->curr_active_slave &&
-			test_bit(__LINK_STATE_LINKWATCH_PENDING,
+			bond->send_grat_arp = bond->params.num_grat_arp;
+			if (!test_bit(__LINK_STATE_LINKWATCH_PENDING,
 					&bond->curr_active_slave->dev->state)) {
-			dprintk("delaying gratuitous arp on %s\n",
-				bond->curr_active_slave->dev->name);
-		} else {
-			if (bond->send_grat_arp > 0) {
 				bond_send_gratuitous_arp(bond);
 				bond->send_grat_arp--;
+			} else {
+				dprintk("delaying gratuitous arp on %s\n",
+					bond->curr_active_slave->dev->name);
 			}
 		}
 	}
-- 
1.5.2.4

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