From 4b8a9239ee708958ed72722a0e5e0cf34243ad26 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Sat, 17 May 2008 21:10:08 -0700 Subject: [PATCH] bonding: remove test for IP in ARP monitor Remove bond_has_ip and all references to it. With this change, the ARP monitor will always send ARP probes if the master is up and has at least one slave. If the bond has an IP address, it is used in the ARP probe; if not, the probes are sent with all zeros in the sender's IP address (which is consistent with an RFC 2131 4.4.1 duplicate address probe). This is useful for cases when bonding itself is hidden underneath a layer of virtual devices, e.g., with Xen. Change suggested by Tsutomu Fujii , who included a one-line patch that only affected active-backup mode. Signed-off-by: Jay Vosburgh Signed-off-by: Jeff Garzik --- drivers/net/bonding/bond_main.c | 31 ++++--------------------------- 1 file changed, 4 insertions(+), 27 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 12c71582f4f..e3da1e53b9c 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2426,25 +2426,6 @@ out: return addr; } -static int bond_has_ip(struct bonding *bond) -{ - struct vlan_entry *vlan, *vlan_next; - - if (bond->master_ip) - return 1; - - if (list_empty(&bond->vlan_list)) - return 0; - - list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list, - vlan_list) { - if (vlan->vlan_ip) - return 1; - } - - return 0; -} - static int bond_has_this_ip(struct bonding *bond, __be32 ip) { struct vlan_entry *vlan, *vlan_next; @@ -2764,8 +2745,7 @@ void bond_loadbalance_arp_mon(struct work_struct *work) * if we don't know our ip yet */ if (time_after_eq(jiffies, slave->dev->trans_start + 2*delta_in_ticks) || - (time_after_eq(jiffies, slave->dev->last_rx + 2*delta_in_ticks) && - bond_has_ip(bond))) { + (time_after_eq(jiffies, slave->dev->last_rx + 2*delta_in_ticks))) { slave->link = BOND_LINK_DOWN; slave->state = BOND_STATE_BACKUP; @@ -2900,8 +2880,7 @@ void bond_activebackup_arp_mon(struct work_struct *work) if ((slave != bond->curr_active_slave) && (!bond->current_arp_slave) && - (time_after_eq(jiffies, slave_last_rx(bond, slave) + 3*delta_in_ticks) && - bond_has_ip(bond))) { + (time_after_eq(jiffies, slave_last_rx(bond, slave) + 3*delta_in_ticks))) { /* a backup slave has gone down; three times * the delta allows the current slave to be * taken out before the backup slave. @@ -2947,8 +2926,7 @@ void bond_activebackup_arp_mon(struct work_struct *work) * if it is up and needs to take over as the curr_active_slave */ if ((time_after_eq(jiffies, slave->dev->trans_start + 2*delta_in_ticks) || - (time_after_eq(jiffies, slave_last_rx(bond, slave) + 2*delta_in_ticks) && - bond_has_ip(bond))) && + (time_after_eq(jiffies, slave_last_rx(bond, slave) + 2*delta_in_ticks))) && time_after_eq(jiffies, slave->jiffies + 2*delta_in_ticks)) { slave->link = BOND_LINK_DOWN; @@ -3000,9 +2978,8 @@ void bond_activebackup_arp_mon(struct work_struct *work) /* the current slave must tx an arp to ensure backup slaves * rx traffic */ - if (slave && bond_has_ip(bond)) { + if (slave && IS_UP(slave->dev)) bond_arp_send_all(bond, slave); - } } /* if we don't have a curr_active_slave, search for the next available -- 2.41.1