static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
int ind;
if (!bond_is_ip_target_ok(target)) {
netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
&target);
return -EINVAL;
}
if (bond_get_targets_ip(targets, target) != -1) { /* dup */
netdev_err(bond->dev, "ARP target %pI4 is already present\n",
&target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, 0); /* first free slot */
if (ind == -1) {
netdev_err(bond->dev, "ARP target table is full!\n");
return -EINVAL;
}
netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
_bond_options_arp_ip_target_set(bond, ind, target, jiffies);
return 0;
}
static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
int ind;
if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
pr_err("%s: invalid ARP target %pI4 specified for addition\n",
bond->dev->name, &target);
return -EINVAL;
}
if (bond_get_targets_ip(targets, target) != -1) { /* dup */
pr_err("%s: ARP target %pI4 is already present\n",
bond->dev->name, &target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, 0); /* first free slot */
if (ind == -1) {
pr_err("%s: ARP target table is full!\n",
bond->dev->name);
return -EINVAL;
}
pr_info("%s: adding ARP target %pI4.\n", bond->dev->name, &target);
_bond_options_arp_ip_target_set(bond, ind, target, jiffies);
return 0;
}
static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
struct list_head *iter;
struct slave *slave;
unsigned long *targets_rx;
int ind, i;
if (!bond_is_ip_target_ok(target)) {
netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
&target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, target);
if (ind == -1) {
netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
&target);
return -EINVAL;
}
if (ind == 0 && !targets[1] && bond->params.arp_interval)
netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
bond_for_each_slave(bond, slave, iter) {
targets_rx = slave->target_last_arp_rx;
for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
targets_rx[i] = targets_rx[i+1];
targets_rx[i] = 0;
}
int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
struct list_head *iter;
struct slave *slave;
unsigned long *targets_rx;
int ind, i;
if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
pr_err("%s: invalid ARP target %pI4 specified for removal\n",
bond->dev->name, &target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, target);
if (ind == -1) {
pr_err("%s: unable to remove nonexistent ARP target %pI4.\n",
bond->dev->name, &target);
return -EINVAL;
}
if (ind == 0 && !targets[1] && bond->params.arp_interval)
pr_warn("%s: removing last arp target with arp_interval on\n",
bond->dev->name);
pr_info("%s: removing ARP target %pI4.\n", bond->dev->name,
&target);
/* not to race with bond_arp_rcv */
write_lock_bh(&bond->lock);
bond_for_each_slave(bond, slave, iter) {
targets_rx = slave->target_last_arp_rx;
for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
targets_rx[i] = targets_rx[i+1];
targets_rx[i] = 0;
}