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authorJay Vosburgh <fubar@us.ibm.com>2006-09-22 21:54:53 -0700
committerJeff Garzik <jeff@garzik.org>2006-09-25 20:08:09 -0400
commitf5b2b966f032f22d3a289045a5afd4afa09f09c6 (patch)
treecb3c505d8f444438bed09353788f6c96150f68ad /drivers/net/bonding/bonding.h
parent70298705bb29fb7982b85089adf17cd37b94baa7 (diff)
[PATCH] bonding: Validate probe replies in ARP monitor
Add logic to check ARP request / reply packets used for ARP monitor link integrity checking. The current method simply examines the slave device to see if it has sent and received traffic; this can be fooled by extraneous traffic. For example, if multiple hosts running bonding are behind a common switch, the probe traffic from the multiple instances of bonding will update the tx/rx times on each other's slave devices. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/bonding/bonding.h')
-rw-r--r--drivers/net/bonding/bonding.h32
1 files changed, 29 insertions, 3 deletions
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 17caafe58247..db16fee40a5f 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -22,8 +22,8 @@
#include "bond_3ad.h"
#include "bond_alb.h"
-#define DRV_VERSION "3.0.3"
-#define DRV_RELDATE "March 23, 2006"
+#define DRV_VERSION "3.1.0-test"
+#define DRV_RELDATE "September 9, 2006"
#define DRV_NAME "bonding"
#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver"
@@ -126,6 +126,7 @@ struct bond_params {
int xmit_policy;
int miimon;
int arp_interval;
+ int arp_validate;
int use_carrier;
int updelay;
int downdelay;
@@ -151,6 +152,7 @@ struct slave {
struct slave *prev;
int delay;
u32 jiffies;
+ u32 last_arp_rx;
s8 link; /* one of BOND_LINK_XXXX */
s8 state; /* one of BOND_STATE_XXXX */
u32 original_flags;
@@ -198,6 +200,7 @@ struct bonding {
struct bond_params params;
struct list_head vlan_list;
struct vlan_group *vlgrp;
+ struct packet_type arp_mon_pt;
};
/**
@@ -228,6 +231,25 @@ static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
return (struct bonding *)slave->dev->master->priv;
}
+#define BOND_ARP_VALIDATE_NONE 0
+#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
+#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
+#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
+ BOND_ARP_VALIDATE_BACKUP)
+
+extern inline int slave_do_arp_validate(struct bonding *bond, struct slave *slave)
+{
+ return bond->params.arp_validate & (1 << slave->state);
+}
+
+extern inline u32 slave_last_rx(struct bonding *bond, struct slave *slave)
+{
+ if (slave_do_arp_validate(bond, slave))
+ return slave->last_arp_rx;
+
+ return slave->dev->last_rx;
+}
+
static inline void bond_set_slave_inactive_flags(struct slave *slave)
{
struct bonding *bond = slave->dev->master->priv;
@@ -235,12 +257,14 @@ static inline void bond_set_slave_inactive_flags(struct slave *slave)
bond->params.mode != BOND_MODE_ALB)
slave->state = BOND_STATE_BACKUP;
slave->dev->priv_flags |= IFF_SLAVE_INACTIVE;
+ if (slave_do_arp_validate(bond, slave))
+ slave->dev->priv_flags |= IFF_SLAVE_NEEDARP;
}
static inline void bond_set_slave_active_flags(struct slave *slave)
{
slave->state = BOND_STATE_ACTIVE;
- slave->dev->priv_flags &= ~IFF_SLAVE_INACTIVE;
+ slave->dev->priv_flags &= ~(IFF_SLAVE_INACTIVE | IFF_SLAVE_NEEDARP);
}
static inline void bond_set_master_3ad_flags(struct bonding *bond)
@@ -284,6 +308,8 @@ int bond_parse_parm(char *mode_arg, struct bond_parm_tbl *tbl);
const char *bond_mode_name(int mode);
void bond_select_active_slave(struct bonding *bond);
void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
+void bond_register_arp(struct bonding *);
+void bond_unregister_arp(struct bonding *);
#endif /* _LINUX_BONDING_H */