The patch titled
bonding: fix zero address hole bug in arp_ip_target list
has been removed from the -mm tree. Its filename was
bonding-fix-zero-address-hole-bug-in-arp_ip_target-list.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: bonding: fix zero address hole bug in arp_ip_target list
From: Brian Haley <brian.haley@xxxxxx>
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13006
Fix a zero address hole bug in the bonding arp_ip_target list that was
causing the bond to ignore ARP replies (bugz 13006). Instead of just
setting the array entry to zero, we now copy any additional entries down
one slot, putting the zero entry at the end. With this change we can now
have all the loops that walk the array stop when they hit a zero since
there will be no addresses after it.
Changes are based in part on code fragment provided in kernel
bugzilla 13006 by Steve Howard <steve@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Brian Haley <brian.haley@xxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/networking/bonding.txt | 2 +-
drivers/net/bonding/bond_main.c | 5 ++---
drivers/net/bonding/bond_sysfs.c | 14 ++++++++------
3 files changed, 11 insertions(+), 10 deletions(-)
diff -puN Documentation/networking/bonding.txt~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list Documentation/networking/bonding.txt
--- a/Documentation/networking/bonding.txt~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list
+++ a/Documentation/networking/bonding.txt
@@ -1242,7 +1242,7 @@ monitoring is enabled, and vice-versa.
To add ARP targets:
# echo +192.168.0.100 > /sys/class/net/bond0/bonding/arp_ip_target
# echo +192.168.0.101 > /sys/class/net/bond0/bonding/arp_ip_target
- NOTE: up to 10 target addresses may be specified.
+ NOTE: up to 16 target addresses may be specified.
To remove an ARP target:
# echo -192.168.0.100 > /sys/class/net/bond0/bonding/arp_ip_target
diff -puN drivers/net/bonding/bond_main.c~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list drivers/net/bonding/bond_main.c
--- a/drivers/net/bonding/bond_main.c~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list
+++ a/drivers/net/bonding/bond_main.c
@@ -2570,7 +2570,7 @@ static void bond_arp_send_all(struct bon
for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
if (!targets[i])
- continue;
+ break;
pr_debug("basa: target %x\n", targets[i]);
if (list_empty(&bond->vlan_list)) {
pr_debug("basa: empty vlan: arp_send\n");
@@ -2677,7 +2677,6 @@ static void bond_validate_arp(struct bon
int i;
__be32 *targets = bond->params.arp_targets;
- targets = bond->params.arp_targets;
for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) {
pr_debug("bva: sip %pI4 tip %pI4 t[%d] %pI4 bhti(tip) %d\n",
&sip, &tip, i, &targets[i], bond_has_this_ip(bond, tip));
@@ -3303,7 +3302,7 @@ static void bond_info_show_master(struct
for(i = 0; (i < BOND_MAX_ARP_TARGETS) ;i++) {
if (!bond->params.arp_targets[i])
- continue;
+ break;
if (printed)
seq_printf(seq, ",");
seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
diff -puN drivers/net/bonding/bond_sysfs.c~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list drivers/net/bonding/bond_sysfs.c
--- a/drivers/net/bonding/bond_sysfs.c~bonding-fix-zero-address-hole-bug-in-arp_ip_target-list
+++ a/drivers/net/bonding/bond_sysfs.c
@@ -684,17 +684,15 @@ static ssize_t bonding_store_arp_targets
goto out;
}
/* look for an empty slot to put the target in, and check for dupes */
- for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
+ for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
if (targets[i] == newtarget) { /* duplicate */
printk(KERN_ERR DRV_NAME
": %s: ARP target %pI4 is already present\n",
bond->dev->name, &newtarget);
- if (done)
- targets[i] = 0;
ret = -EINVAL;
goto out;
}
- if (targets[i] == 0 && !done) {
+ if (targets[i] == 0) {
printk(KERN_INFO DRV_NAME
": %s: adding ARP target %pI4.\n",
bond->dev->name, &newtarget);
@@ -720,12 +718,16 @@ static ssize_t bonding_store_arp_targets
goto out;
}
- for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
+ for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
if (targets[i] == newtarget) {
+ int j;
printk(KERN_INFO DRV_NAME
": %s: removing ARP target %pI4.\n",
bond->dev->name, &newtarget);
- targets[i] = 0;
+ for (j = i; (j < (BOND_MAX_ARP_TARGETS-1)) && targets[j+1]; j++)
+ targets[j] = targets[j+1];
+
+ targets[j] = 0;
done = 1;
}
}
_
Patches currently in -mm which might be from brian.haley@xxxxxx are
linux-next.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
