Delay sending a gratuitous_arp when LINK_STATE_LINKWATCH_PENDING bit
in dev->state field is on. This improves the chances for the arp packet to
be transmitted.
Signed-off-by: Moni Shoua <monis at voltaire.com>
Acked-by: Jay Vosburgh <[EMAIL PROTECTED]>
---
drivers/net/bonding/bond_main.c | 24 +++++++++++++++++++++---
drivers/net/bonding/bonding.h | 1 +
2 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 3f082dc..c017042 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1103,8 +1103,14 @@ void bond_change_active_slave(struct bon
if (new_active && !bond->do_set_mac_addr)
memcpy(bond->dev->dev_addr, new_active->dev->dev_addr,
new_active->dev->addr_len);
-
- bond_send_gratuitous_arp(bond);
+ if (bond->curr_active_slave &&
+ 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);
+ bond->send_grat_arp = 1;
+ } else
+ bond_send_gratuitous_arp(bond);
}
}
@@ -2074,6 +2080,17 @@ void bond_mii_monitor(struct net_device
* program could monitor the link itself if needed.
*/
+ if (bond->send_grat_arp) {
+ if (bond->curr_active_slave &&
test_bit(__LINK_STATE_LINKWATCH_PENDING,
+ &bond->curr_active_slave->dev->state))
+ dprintk("Needs to send gratuitous arp but not yet\n");
+ else {
+ dprintk("sending delayed gratuitous arp on on %s\n",
+ bond->curr_active_slave->dev->name);
+ bond_send_gratuitous_arp(bond);
+ bond->send_grat_arp = 0;
+ }
+ }
read_lock(&bond->curr_slave_lock);
oldcurrent = bond->curr_active_slave;
read_unlock(&bond->curr_slave_lock);
@@ -2475,7 +2492,7 @@ static void bond_send_gratuitous_arp(str
if (bond->master_ip) {
bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip,
- bond->master_ip, 0);
+ bond->master_ip, 0);
}
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
@@ -4281,6 +4298,7 @@ static int bond_init(struct net_device *
bond->current_arp_slave = NULL;
bond->primary_slave = NULL;
bond->dev = bond_dev;
+ bond->send_grat_arp = 0;
INIT_LIST_HEAD(&bond->vlan_list);
/* Initialize the device entry points */
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ad9c632..e0e06a8 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -187,6 +187,7 @@ struct bonding {
struct timer_list arp_timer;
s8 kill_timers;
s8 do_set_mac_addr;
+ s8 send_grat_arp;
struct net_device_stats stats;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
-
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