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-rw-r--r--drivers/net/bonding/bond_alb.c6
-rw-r--r--drivers/net/bonding/bond_main.c824
-rw-r--r--drivers/net/bonding/bond_sysfs.c107
-rw-r--r--drivers/net/bonding/bonding.h17
4 files changed, 590 insertions, 364 deletions
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 5a673725471c..b211486a0ca3 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -419,8 +419,10 @@ static void rlb_teach_disabled_mac_on_primary(struct bonding *bond, u8 addr[])
}
if (!bond->alb_info.primary_is_promisc) {
- bond->alb_info.primary_is_promisc = 1;
- dev_set_promiscuity(bond->curr_active_slave->dev, 1);
+ if (!dev_set_promiscuity(bond->curr_active_slave->dev, 1))
+ bond->alb_info.primary_is_promisc = 1;
+ else
+ bond->alb_info.primary_is_promisc = 0;
}
bond->alb_info.rlb_promisc_timeout_counter = 0;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 50a40e433154..9737c06045d6 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -88,6 +88,7 @@
#define BOND_LINK_ARP_INTERV 0
static int max_bonds = BOND_DEFAULT_MAX_BONDS;
+static int num_grat_arp = 1;
static int miimon = BOND_LINK_MON_INTERV;
static int updelay = 0;
static int downdelay = 0;
@@ -99,11 +100,13 @@ static char *xmit_hash_policy = NULL;
static int arp_interval = BOND_LINK_ARP_INTERV;
static char *arp_ip_target[BOND_MAX_ARP_TARGETS] = { NULL, };
static char *arp_validate = NULL;
-static int fail_over_mac = 0;
+static char *fail_over_mac = NULL;
struct bond_params bonding_defaults;
module_param(max_bonds, int, 0);
MODULE_PARM_DESC(max_bonds, "Max number of bonded devices");
+module_param(num_grat_arp, int, 0644);
+MODULE_PARM_DESC(num_grat_arp, "Number of gratuitous ARP packets to send on failover event");
module_param(miimon, int, 0);
MODULE_PARM_DESC(miimon, "Link check interval in milliseconds");
module_param(updelay, int, 0);
@@ -133,8 +136,8 @@ module_param_array(arp_ip_target, charp, NULL, 0);
MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form");
module_param(arp_validate, charp, 0);
MODULE_PARM_DESC(arp_validate, "validate src/dst of ARP probes: none (default), active, backup or all");
-module_param(fail_over_mac, int, 0);
-MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to the same MAC. 0 of off (default), 1 for on.");
+module_param(fail_over_mac, charp, 0);
+MODULE_PARM_DESC(fail_over_mac, "For active-backup, do not set all slaves to the same MAC. none (default), active or follow");
/*----------------------------- Global variables ----------------------------*/
@@ -187,6 +190,13 @@ struct bond_parm_tbl arp_validate_tbl[] = {
{ NULL, -1},
};
+struct bond_parm_tbl fail_over_mac_tbl[] = {
+{ "none", BOND_FOM_NONE},
+{ "active", BOND_FOM_ACTIVE},
+{ "follow", BOND_FOM_FOLLOW},
+{ NULL, -1},
+};
+
/*-------------------------- Forward declarations ---------------------------*/
static void bond_send_gratuitous_arp(struct bonding *bond);
@@ -261,14 +271,14 @@ static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id)
*/
static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id)
{
- struct vlan_entry *vlan, *next;
+ struct vlan_entry *vlan;
int res = -ENODEV;
dprintk("bond: %s, vlan id %d\n", bond->dev->name, vlan_id);
write_lock_bh(&bond->lock);
- list_for_each_entry_safe(vlan, next, &bond->vlan_list, vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
if (vlan->vlan_id == vlan_id) {
list_del(&vlan->vlan_list);
@@ -762,39 +772,49 @@ static struct dev_mc_list *bond_mc_list_find_dmi(struct dev_mc_list *dmi, struct
/*
* Push the promiscuity flag down to appropriate slaves
*/
-static void bond_set_promiscuity(struct bonding *bond, int inc)
+static int bond_set_promiscuity(struct bonding *bond, int inc)
{
+ int err = 0;
if (USES_PRIMARY(bond->params.mode)) {
/* write lock already acquired */
if (bond->curr_active_slave) {
- dev_set_promiscuity(bond->curr_active_slave->dev, inc);
+ err = dev_set_promiscuity(bond->curr_active_slave->dev,
+ inc);
}
} else {
struct slave *slave;
int i;
bond_for_each_slave(bond, slave, i) {
- dev_set_promiscuity(slave->dev, inc);
+ err = dev_set_promiscuity(slave->dev, inc);
+ if (err)
+ return err;
}
}
+ return err;
}
/*
* Push the allmulti flag down to all slaves
*/
-static void bond_set_allmulti(struct bonding *bond, int inc)
+static int bond_set_allmulti(struct bonding *bond, int inc)
{
+ int err = 0;
if (USES_PRIMARY(bond->params.mode)) {
/* write lock already acquired */
if (bond->curr_active_slave) {
- dev_set_allmulti(bond->curr_active_slave->dev, inc);
+ err = dev_set_allmulti(bond->curr_active_slave->dev,
+ inc);
}
} else {
struct slave *slave;
int i;
bond_for_each_slave(bond, slave, i) {
- dev_set_allmulti(slave->dev, inc);
+ err = dev_set_allmulti(slave->dev, inc);
+ if (err)
+ return err;
}
}
+ return err;
}
/*
@@ -955,6 +975,7 @@ static void bond_mc_swap(struct bonding *bond, struct slave *new_active, struct
}
if (new_active) {
+ /* FIXME: Signal errors upstream. */
if (bond->dev->flags & IFF_PROMISC) {
dev_set_promiscuity(new_active->dev, 1);
}
@@ -970,6 +991,82 @@ static void bond_mc_swap(struct bonding *bond, struct slave *new_active, struct
}
}
+/*
+ * bond_do_fail_over_mac
+ *
+ * Perform special MAC address swapping for fail_over_mac settings
+ *
+ * Called with RTNL, bond->lock for read, curr_slave_lock for write_bh.
+ */
+static void bond_do_fail_over_mac(struct bonding *bond,
+ struct slave *new_active,
+ struct slave *old_active)
+{
+ u8 tmp_mac[ETH_ALEN];
+ struct sockaddr saddr;
+ int rv;
+
+ switch (bond->params.fail_over_mac) {
+ case BOND_FOM_ACTIVE:
+ if (new_active)
+ memcpy(bond->dev->dev_addr, new_active->dev->dev_addr,
+ new_active->dev->addr_len);
+ break;
+ case BOND_FOM_FOLLOW:
+ /*
+ * if new_active && old_active, swap them
+ * if just old_active, do nothing (going to no active slave)
+ * if just new_active, set new_active to bond's MAC
+ */
+ if (!new_active)
+ return;
+
+ write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->lock);
+
+ if (old_active) {
+ memcpy(tmp_mac, new_active->dev->dev_addr, ETH_ALEN);
+ memcpy(saddr.sa_data, old_active->dev->dev_addr,
+ ETH_ALEN);
+ saddr.sa_family = new_active->dev->type;
+ } else {
+ memcpy(saddr.sa_data, bond->dev->dev_addr, ETH_ALEN);
+ saddr.sa_family = bond->dev->type;
+ }
+
+ rv = dev_set_mac_address(new_active->dev, &saddr);
+ if (rv) {
+ printk(KERN_ERR DRV_NAME
+ ": %s: Error %d setting MAC of slave %s\n",
+ bond->dev->name, -rv, new_active->dev->name);
+ goto out;
+ }
+
+ if (!old_active)
+ goto out;
+
+ memcpy(saddr.sa_data, tmp_mac, ETH_ALEN);
+ saddr.sa_family = old_active->dev->type;
+
+ rv = dev_set_mac_address(old_active->dev, &saddr);
+ if (rv)
+ printk(KERN_ERR DRV_NAME
+ ": %s: Error %d setting MAC of slave %s\n",
+ bond->dev->name, -rv, new_active->dev->name);
+out:
+ read_lock(&bond->lock);
+ write_lock_bh(&bond->curr_slave_lock);
+ break;
+ default:
+ printk(KERN_ERR DRV_NAME
+ ": %s: bond_do_fail_over_mac impossible: bad policy %d\n",
+ bond->dev->name, bond->params.fail_over_mac);
+ break;
+ }
+
+}
+
+
/**
* find_best_interface - select the best available slave to be the active one
* @bond: our bonding struct
@@ -1037,7 +1134,8 @@ static struct slave *bond_find_best_slave(struct bonding *bond)
* because it is apparently the best available slave we have, even though its
* updelay hasn't timed out yet.
*
- * Warning: Caller must hold curr_slave_lock for writing.
+ * If new_active is not NULL, caller must hold bond->lock for read and
+ * curr_slave_lock for write_bh.
*/
void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
{
@@ -1048,6 +1146,8 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
}
if (new_active) {
+ new_active->jiffies = jiffies;
+
if (new_active->link == BOND_LINK_BACK) {
if (USES_PRIMARY(bond->params.mode)) {
printk(KERN_INFO DRV_NAME
@@ -1059,7 +1159,6 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
new_active->delay = 0;
new_active->link = BOND_LINK_UP;
- new_active->jiffies = jiffies;
if (bond->params.mode == BOND_MODE_8023AD) {
bond_3ad_handle_link_change(new_active, BOND_LINK_UP);
@@ -1101,22 +1200,22 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
if (new_active) {
bond_set_slave_active_flags(new_active);
- }
- /* when bonding does not set the slave MAC address, the bond MAC
- * address is the one of the active slave.
- */
- if (new_active && bond->params.fail_over_mac)
- memcpy(bond->dev->dev_addr, new_active->dev->dev_addr,
- new_active->dev->addr_len);
- 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
+ if (bond->params.fail_over_mac)
+ bond_do_fail_over_mac(bond, new_active,
+ old_active);
+
+ bond->send_grat_arp = bond->params.num_grat_arp;
bond_send_gratuitous_arp(bond);
+
+ write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->lock);
+
+ netdev_bonding_change(bond->dev);
+
+ read_lock(&bond->lock);
+ write_lock_bh(&bond->curr_slave_lock);
+ }
}
}
@@ -1129,7 +1228,7 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
* - The primary_slave has got its link back.
* - A slave has got its link back and there's no old curr_active_slave.
*
- * Warning: Caller must hold curr_slave_lock for writing.
+ * Caller must hold bond->lock for read and curr_slave_lock for write_bh.
*/
void bond_select_active_slave(struct bonding *bond)
{
@@ -1376,14 +1475,14 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
printk(KERN_WARNING DRV_NAME
": %s: Warning: The first slave device "
"specified does not support setting the MAC "
- "address. Enabling the fail_over_mac option.",
+ "address. Setting fail_over_mac to active.",
bond_dev->name);
- bond->params.fail_over_mac = 1;
- } else if (!bond->params.fail_over_mac) {
+ bond->params.fail_over_mac = BOND_FOM_ACTIVE;
+ } else if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) {
printk(KERN_ERR DRV_NAME
": %s: Error: The slave device specified "
"does not support setting the MAC address, "
- "but fail_over_mac is not enabled.\n"
+ "but fail_over_mac is not set to active.\n"
, bond_dev->name);
res = -EOPNOTSUPP;
goto err_undo_flags;
@@ -1456,20 +1555,24 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
if (!USES_PRIMARY(bond->params.mode)) {
/* set promiscuity level to new slave */
if (bond_dev->flags & IFF_PROMISC) {
- dev_set_promiscuity(slave_dev, 1);
+ res = dev_set_promiscuity(slave_dev, 1);
+ if (res)
+ goto err_close;
}
/* set allmulti level to new slave */
if (bond_dev->flags & IFF_ALLMULTI) {
- dev_set_allmulti(slave_dev, 1);
+ res = dev_set_allmulti(slave_dev, 1);
+ if (res)
+ goto err_close;
}
- netif_tx_lock_bh(bond_dev);
+ netif_addr_lock_bh(bond_dev);
/* upload master's mc_list to new slave */
for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) {
dev_mc_add (slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
}
- netif_tx_unlock_bh(bond_dev);
+ netif_addr_unlock_bh(bond_dev);
}
if (bond->params.mode == BOND_MODE_8023AD) {
@@ -1490,6 +1593,10 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
bond_compute_features(bond);
+ write_unlock_bh(&bond->lock);
+
+ read_lock(&bond->lock);
+
new_slave->last_arp_rx = jiffies;
if (bond->params.miimon && !bond->params.use_carrier) {
@@ -1566,6 +1673,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
}
}
+ write_lock_bh(&bond->curr_slave_lock);
+
switch (bond->params.mode) {
case BOND_MODE_ACTIVEBACKUP:
bond_set_slave_inactive_flags(new_slave);
@@ -1613,9 +1722,11 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
break;
} /* switch(bond_mode) */
+ write_unlock_bh(&bond->curr_slave_lock);
+
bond_set_carrier(bond);
- write_unlock_bh(&bond->lock);
+ read_unlock(&bond->lock);
res = bond_create_slave_symlinks(bond_dev, slave_dev);
if (res)
@@ -1639,6 +1750,10 @@ err_unset_master:
err_restore_mac:
if (!bond->params.fail_over_mac) {
+ /* XXX TODO - fom follow mode needs to change master's
+ * MAC if this slave's MAC is in use by the bond, or at
+ * least print a warning.
+ */
memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN);
addr.sa_family = slave_dev->type;
dev_set_mac_address(slave_dev, &addr);
@@ -1693,20 +1808,18 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
return -EINVAL;
}
- mac_addr_differ = memcmp(bond_dev->dev_addr,
- slave->perm_hwaddr,
- ETH_ALEN);
- if (!mac_addr_differ && (bond->slave_cnt > 1)) {
- printk(KERN_WARNING DRV_NAME
- ": %s: Warning: the permanent HWaddr of %s - "
- "%s - is still in use by %s. "
- "Set the HWaddr of %s to a different address "
- "to avoid conflicts.\n",
- bond_dev->name,
- slave_dev->name,
- print_mac(mac, slave->perm_hwaddr),
- bond_dev->name,
- slave_dev->name);
+ if (!bond->params.fail_over_mac) {
+ mac_addr_differ = memcmp(bond_dev->dev_addr, slave->perm_hwaddr,
+ ETH_ALEN);
+ if (!mac_addr_differ && (bond->slave_cnt > 1))
+ printk(KERN_WARNING DRV_NAME
+ ": %s: Warning: the permanent HWaddr of %s - "
+ "%s - is still in use by %s. "
+ "Set the HWaddr of %s to a different address "
+ "to avoid conflicts.\n",
+ bond_dev->name, slave_dev->name,
+ print_mac(mac, slave->perm_hwaddr),
+ bond_dev->name, slave_dev->name);
}
/* Inform AD package of unbinding of slave. */
@@ -1823,9 +1936,9 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
}
/* flush master's mc_list from slave */
- netif_tx_lock_bh(bond_dev);
+ netif_addr_lock_bh(bond_dev);
bond_mc_list_flush(bond_dev, slave_dev);
- netif_tx_unlock_bh(bond_dev);
+ netif_addr_unlock_bh(bond_dev);
}
netdev_set_master(slave_dev, NULL);
@@ -1833,7 +1946,7 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
/* close slave before restoring its mac address */
dev_close(slave_dev);
- if (!bond->params.fail_over_mac) {
+ if (bond->params.fail_over_mac != BOND_FOM_ACTIVE) {
/* restore original ("permanent") mac address */
memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
addr.sa_family = slave_dev->type;
@@ -1946,9 +2059,9 @@ static int bond_release_all(struct net_device *bond_dev)
}
/* flush master's mc_list from slave */
- netif_tx_lock_bh(bond_dev);
+ netif_addr_lock_bh(bond_dev);
bond_mc_list_flush(bond_dev, slave_dev);
- netif_tx_unlock_bh(bond_dev);
+ netif_addr_unlock_bh(bond_dev);
}
netdev_set_master(slave_dev, NULL);
@@ -2136,17 +2249,6 @@ static int __bond_mii_monitor(struct bonding *bond, int have_locks)
* 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);
@@ -2387,6 +2489,13 @@ void bond_mii_monitor(struct work_struct *work)
read_unlock(&bond->lock);
return;
}
+
+ if (bond->send_grat_arp) {
+ read_lock(&bond->curr_slave_lock);
+ bond_send_gratuitous_arp(bond);
+ read_unlock(&bond->curr_slave_lock);
+ }
+
if (__bond_mii_monitor(bond, 0)) {
read_unlock(&bond->lock);
rtnl_lock();
@@ -2397,7 +2506,7 @@ void bond_mii_monitor(struct work_struct *work)
read_lock(&bond->lock);
}
- delay = ((bond->params.miimon * HZ) / 1000) ? : 1;
+ delay = msecs_to_jiffies(bond->params.miimon);
read_unlock(&bond->lock);
queue_delayed_work(bond->wq, &bond->mii_work, delay);
}
@@ -2426,37 +2535,14 @@ 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;
+ struct vlan_entry *vlan;
if (ip == 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) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
if (ip == vlan->vlan_ip)
return 1;
}
@@ -2498,7 +2584,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
{
int i, vlan_id, rv;
__be32 *targets = bond->params.arp_targets;
- struct vlan_entry *vlan, *vlan_next;
+ struct vlan_entry *vlan;
struct net_device *vlan_dev;
struct flowi fl;
struct rtable *rt;
@@ -2545,8 +2631,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
}
vlan_id = 0;
- list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
- vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == rt->u.dst.dev) {
vlan_id = vlan->vlan_id;
@@ -2576,6 +2661,8 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
/*
* Kick out a gratuitous ARP for an IP on the bonding master plus one
* for each VLAN above us.
+ *
+ * Caller must hold curr_slave_lock for read or better
*/
static void bond_send_gratuitous_arp(struct bonding *bond)
{
@@ -2585,9 +2672,13 @@ static void bond_send_gratuitous_arp(struct bonding *bond)
dprintk("bond_send_grat_arp: bond %s slave %s\n", bond->dev->name,
slave ? slave->dev->name : "NULL");
- if (!slave)
+
+ if (!slave || !bond->send_grat_arp ||
+ test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
return;
+ bond->send_grat_arp--;
+
if (bond->master_ip) {
bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip,
bond->master_ip, 0);
@@ -2707,7 +2798,7 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
read_lock(&bond->lock);
- delta_in_ticks = (bond->params.arp_interval * HZ) / 1000;
+ delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval);
if (bond->kill_timers) {
goto out;
@@ -2764,8 +2855,7 @@ 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;
@@ -2813,246 +2903,305 @@ out:
}
/*
- * When using arp monitoring in active-backup mode, this function is
- * called to determine if any backup slaves have went down or a new
- * current slave needs to be found.
- * The backup slaves never generate traffic, they are considered up by merely
- * receiving traffic. If the current slave goes down, each backup slave will
- * be given the opportunity to tx/rx an arp before being taken down - this
- * prevents all slaves from being taken down due to the current slave not
- * sending any traffic for the backups to receive. The arps are not necessarily
- * necessary, any tx and rx traffic will keep the current slave up. While any
- * rx traffic will keep the backup slaves up, the current slave is responsible
- * for generating traffic to keep them up regardless of any other traffic they
- * may have received.
- * see loadbalance_arp_monitor for arp monitoring in load balancing mode
+ * Called to inspect slaves for active-backup mode ARP monitor link state
+ * changes. Sets new_link in slaves to specify what action should take
+ * place for the slave. Returns 0 if no changes are found, >0 if changes
+ * to link states must be committed.
+ *
+ * Called with bond->lock held for read.
*/
-void bond_activebackup_arp_mon(struct work_struct *work)
+static int bond_ab_arp_inspect(struct bonding *bond, int delta_in_ticks)
{
- struct bonding *bond = container_of(work, struct bonding,
- arp_work.work);
struct slave *slave;
- int delta_in_ticks;
- int i;
+ int i, commit = 0;
- read_lock(&bond->lock);
+ bond_for_each_slave(bond, slave, i) {
+ slave->new_link = BOND_LINK_NOCHANGE;
- delta_in_ticks = (bond->params.arp_interval * HZ) / 1000;
+ if (slave->link != BOND_LINK_UP) {
+ if (time_before_eq(jiffies, slave_last_rx(bond, slave) +
+ delta_in_ticks)) {
+ slave->new_link = BOND_LINK_UP;
+ commit++;
+ }
- if (bond->kill_timers) {
- goto out;
- }
+ continue;
+ }
- if (bond->slave_cnt == 0) {
- goto re_arm;
+ /*
+ * Give slaves 2*delta after being enslaved or made
+ * active. This avoids bouncing, as the last receive
+ * times need a full ARP monitor cycle to be updated.
+ */
+ if (!time_after_eq(jiffies, slave->jiffies +
+ 2 * delta_in_ticks))
+ continue;
+
+ /*
+ * Backup slave is down if:
+ * - No current_arp_slave AND
+ * - more than 3*delta since last receive AND
+ * - the bond has an IP address
+ *
+ * Note: a non-null current_arp_slave indicates
+ * the curr_active_slave went down and we are
+ * searching for a new one; under this condition
+ * we only take the curr_active_slave down - this
+ * gives each slave a chance to tx/rx traffic
+ * before being taken out
+ */
+ if (slave->state == BOND_STATE_BACKUP &&
+ !bond->current_arp_slave &&
+ time_after(jiffies, slave_last_rx(bond, slave) +
+ 3 * delta_in_ticks)) {
+ slave->new_link = BOND_LINK_DOWN;
+ commit++;
+ }
+
+ /*
+ * Active slave is down if:
+ * - more than 2*delta since transmitting OR
+ * - (more than 2*delta since receive AND
+ * the bond has an IP address)
+ */
+ if ((slave->state == BOND_STATE_ACTIVE) &&
+ (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)))) {
+ slave->new_link = BOND_LINK_DOWN;
+ commit++;
+ }
}
- /* determine if any slave has come up or any backup slave has
- * gone down
- * TODO: what about up/down delay in arp mode? it wasn't here before
- * so it can wait
+ read_lock(&bond->curr_slave_lock);
+
+ /*
+ * Trigger a commit if the primary option setting has changed.
*/
- bond_for_each_slave(bond, slave, i) {
- if (slave->link != BOND_LINK_UP) {
- if (time_before_eq(jiffies,
- slave_last_rx(bond, slave) + delta_in_ticks)) {
+ if (bond->primary_slave &&
+ (bond->primary_slave != bond->curr_active_slave) &&
+ (bond->primary_slave->link == BOND_LINK_UP))
+ commit++;
- slave->link = BOND_LINK_UP;
+ read_unlock(&bond->curr_slave_lock);
- write_lock_bh(&bond->curr_slave_lock);
+ return commit;
+}
- if ((!bond->curr_active_slave) &&
- time_before_eq(jiffies, slave->dev->trans_start + delta_in_ticks)) {
- bond_change_active_slave(bond, slave);
- bond->current_arp_slave = NULL;
- } else if (bond->curr_active_slave != slave) {
- /* this slave has just come up but we
- * already have a current slave; this
- * can also happen if bond_enslave adds
- * a new slave that is up while we are
- * searching for a new slave
- */
- bond_set_slave_inactive_flags(slave);
- bond->current_arp_slave = NULL;
- }
+/*
+ * Called to commit link state changes noted by inspection step of
+ * active-backup mode ARP monitor.
+ *
+ * Called with RTNL and bond->lock for read.
+ */
+static void bond_ab_arp_commit(struct bonding *bond, int delta_in_ticks)
+{
+ struct slave *slave;
+ int i;
- bond_set_carrier(bond);
+ bond_for_each_slave(bond, slave, i) {
+ switch (slave->new_link) {
+ case BOND_LINK_NOCHANGE:
+ continue;
- if (slave == bond->curr_active_slave) {
- printk(KERN_INFO DRV_NAME
- ": %s: %s is up and now the "
- "active interface\n",
- bond->dev->name,
- slave->dev->name);
- netif_carrier_on(bond->dev);
- } else {
- printk(KERN_INFO DRV_NAME
- ": %s: backup interface %s is "
- "now up\n",
- bond->dev->name,
- slave->dev->name);
- }
+ case BOND_LINK_UP:
+ write_lock_bh(&bond->curr_slave_lock);
- write_unlock_bh(&bond->curr_slave_lock);
- }
- } else {
- read_lock(&bond->curr_slave_lock);
+ if (!bond->curr_active_slave &&
+ time_before_eq(jiffies, slave->dev->trans_start +
+ delta_in_ticks)) {
+ slave->link = BOND_LINK_UP;
+ bond_change_active_slave(bond, slave);
+ bond->current_arp_slave = NULL;
- 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))) {
- /* a backup slave has gone down; three times
- * the delta allows the current slave to be
- * taken out before the backup slave.
- * note: a non-null current_arp_slave indicates
- * the curr_active_slave went down and we are
- * searching for a new one; under this
- * condition we only take the curr_active_slave
- * down - this gives each slave a chance to
- * tx/rx traffic before being taken out
+ printk(KERN_INFO DRV_NAME
+ ": %s: %s is up and now the "
+ "active interface\n",
+ bond->dev->name, slave->dev->name);
+
+ } else if (bond->curr_active_slave != slave) {
+ /* this slave has just come up but we
+ * already have a current slave; this can
+ * also happen if bond_enslave adds a new
+ * slave that is up while we are searching
+ * for a new slave
*/
+ slave->link = BOND_LINK_UP;
+ bond_set_slave_inactive_flags(slave);
+ bond->current_arp_slave = NULL;
- read_unlock(&bond->curr_slave_lock);
+ printk(KERN_INFO DRV_NAME
+ ": %s: backup interface %s is now up\n",
+ bond->dev->name, slave->dev->name);
+ }
- slave->link = BOND_LINK_DOWN;
+ write_unlock_bh(&bond->curr_slave_lock);
- if (slave->link_failure_count < UINT_MAX) {
- slave->link_failure_count++;
- }
+ break;
+
+ case BOND_LINK_DOWN:
+ if (slave->link_failure_count < UINT_MAX)
+ slave->link_failure_count++;
+
+ slave->link = BOND_LINK_DOWN;
+
+ if (slave == bond->curr_active_slave) {
+ printk(KERN_INFO DRV_NAME
+ ": %s: link status down for active "
+ "interface %s, disabling it\n",
+ bond->dev->name, slave->dev->name);
bond_set_slave_inactive_flags(slave);
+ write_lock_bh(&bond->curr_slave_lock);
+
+ bond_select_active_slave(bond);
+ if (bond->curr_active_slave)
+ bond->curr_active_slave->jiffies =
+ jiffies;
+
+ write_unlock_bh(&bond->curr_slave_lock);
+
+ bond->current_arp_slave = NULL;
+
+ } else if (slave->state == BOND_STATE_BACKUP) {
printk(KERN_INFO DRV_NAME
": %s: backup interface %s is now down\n",
- bond->dev->name,
- slave->dev->name);
- } else {
- read_unlock(&bond->curr_slave_lock);
+ bond->dev->name, slave->dev->name);
+
+ bond_set_slave_inactive_flags(slave);
}
+ break;
+
+ default:
+ printk(KERN_ERR DRV_NAME
+ ": %s: impossible: new_link %d on slave %s\n",
+ bond->dev->name, slave->new_link,
+ slave->dev->name);
}
}
- read_lock(&bond->curr_slave_lock);
- slave = bond->curr_active_slave;
- read_unlock(&bond->curr_slave_lock);
-
- if (slave) {
- /* if we have sent traffic in the past 2*arp_intervals but
- * haven't xmit and rx traffic in that time interval, select
- * a different slave. slave->jiffies is only updated when
- * a slave first becomes the curr_active_slave - not necessarily
- * after every arp; this ensures the slave has a full 2*delta
- * before being taken out. if a primary is being used, check
- * 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->jiffies + 2*delta_in_ticks)) {
+ /*
+ * No race with changes to primary via sysfs, as we hold rtnl.
+ */
+ if (bond->primary_slave &&
+ (bond->primary_slave != bond->curr_active_slave) &&
+ (bond->primary_slave->link == BOND_LINK_UP)) {
+ write_lock_bh(&bond->curr_slave_lock);
+ bond_change_active_slave(bond, bond->primary_slave);
+ write_unlock_bh(&bond->curr_slave_lock);
+ }
- slave->link = BOND_LINK_DOWN;
+ bond_set_carrier(bond);
+}
- if (slave->link_failure_count < UINT_MAX) {
- slave->link_failure_count++;
- }
+/*
+ * Send ARP probes for active-backup mode ARP monitor.
+ *
+ * Called with bond->lock held for read.
+ */
+static void bond_ab_arp_probe(struct bonding *bond)
+{
+ struct slave *slave;
+ int i;
- printk(KERN_INFO DRV_NAME
- ": %s: link status down for active interface "
- "%s, disabling it\n",
- bond->dev->name,
- slave->dev->name);
+ read_lock(&bond->curr_slave_lock);
- write_lock_bh(&bond->curr_slave_lock);
+ if (bond->current_arp_slave && bond->curr_active_slave)
+ printk("PROBE: c_arp %s && cas %s BAD\n",
+ bond->current_arp_slave->dev->name,
+ bond->curr_active_slave->dev->name);
- bond_select_active_slave(bond);
- slave = bond->curr_active_slave;
+ if (bond->curr_active_slave) {
+ bond_arp_send_all(bond, bond->curr_active_slave);
+ read_unlock(&bond->curr_slave_lock);
+ return;
+ }
- write_unlock_bh(&bond->curr_slave_lock);
+ read_unlock(&bond->curr_slave_lock);
- bond->current_arp_slave = slave;
+ /* if we don't have a curr_active_slave, search for the next available
+ * backup slave from the current_arp_slave and make it the candidate
+ * for becoming the curr_active_slave
+ */
- if (slave) {
- slave->jiffies = jiffies;
- }
- } else if ((bond->primary_slave) &&
- (bond->primary_slave != slave) &&
- (bond->primary_slave->link == BOND_LINK_UP)) {
- /* at this point, slave is the curr_active_slave */
- printk(KERN_INFO DRV_NAME
- ": %s: changing from interface %s to primary "
- "interface %s\n",
- bond->dev->name,
- slave->dev->name,
- bond->primary_slave->dev->name);
+ if (!bond->current_arp_slave) {
+ bond->current_arp_slave = bond->first_slave;
+ if (!bond->current_arp_slave)
+ return;
+ }
- /* primary is up so switch to it */
- write_lock_bh(&bond->curr_slave_lock);
- bond_change_active_slave(bond, bond->primary_slave);
- write_unlock_bh(&bond->curr_slave_lock);
+ bond_set_slave_inactive_flags(bond->current_arp_slave);
- slave = bond->primary_slave;
+ /* search for next candidate */
+ bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) {
+ if (IS_UP(slave->dev)) {
+ slave->link = BOND_LINK_BACK;
+ bond_set_slave_active_flags(slave);
+ bond_arp_send_all(bond, slave);
slave->jiffies = jiffies;
- } else {
- bond->current_arp_slave = NULL;
+ bond->current_arp_slave = slave;
+ break;
}
- /* the current slave must tx an arp to ensure backup slaves
- * rx traffic
+ /* if the link state is up at this point, we
+ * mark it down - this can happen if we have
+ * simultaneous link failures and
+ * reselect_active_interface doesn't make this
+ * one the current slave so it is still marked
+ * up when it is actually down
*/
- if (slave && bond_has_ip(bond)) {
- bond_arp_send_all(bond, slave);
+ if (slave->link == BOND_LINK_UP) {
+ slave->link = BOND_LINK_DOWN;
+ if (slave->link_failure_count < UINT_MAX)
+ slave->link_failure_count++;
+
+ bond_set_slave_inactive_flags(slave);
+
+ printk(KERN_INFO DRV_NAME
+ ": %s: backup interface %s is now down.\n",
+ bond->dev->name, slave->dev->name);
}
}
+}
- /* if we don't have a curr_active_slave, search for the next available
- * backup slave from the current_arp_slave and make it the candidate
- * for becoming the curr_active_slave
- */
- if (!slave) {
- if (!bond->current_arp_slave) {
- bond->current_arp_slave = bond->first_slave;
- }
+void bond_activebackup_arp_mon(struct work_struct *work)
+{
+ struct bonding *bond = container_of(work, struct bonding,
+ arp_work.work);
+ int delta_in_ticks;
- if (bond->current_arp_slave) {
- bond_set_slave_inactive_flags(bond->current_arp_slave);
+ read_lock(&bond->lock);
- /* search for next candidate */
- bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave->next) {
- if (IS_UP(slave->dev)) {
- slave->link = BOND_LINK_BACK;
- bond_set_slave_active_flags(slave);
- bond_arp_send_all(bond, slave);
- slave->jiffies = jiffies;
- bond->current_arp_slave = slave;
- break;
- }
+ if (bond->kill_timers)
+ goto out;
- /* if the link state is up at this point, we
- * mark it down - this can happen if we have
- * simultaneous link failures and
- * reselect_active_interface doesn't make this
- * one the current slave so it is still marked
- * up when it is actually down
- */
- if (slave->link == BOND_LINK_UP) {
- slave->link = BOND_LINK_DOWN;
- if (slave->link_failure_count < UINT_MAX) {
- slave->link_failure_count++;
- }
+ delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval);
- bond_set_slave_inactive_flags(slave);
+ if (bond->slave_cnt == 0)
+ goto re_arm;
- printk(KERN_INFO DRV_NAME
- ": %s: backup interface %s is "
- "now down.\n",
- bond->dev->name,
- slave->dev->name);
- }
- }
- }
+ if (bond->send_grat_arp) {
+ read_lock(&bond->curr_slave_lock);
+ bond_send_gratuitous_arp(bond);
+ read_unlock(&bond->curr_slave_lock);
}
+ if (bond_ab_arp_inspect(bond, delta_in_ticks)) {
+ read_unlock(&bond->lock);
+ rtnl_lock();
+ read_lock(&bond->lock);
+
+ bond_ab_arp_commit(bond, delta_in_ticks);
+
+ read_unlock(&bond->lock);
+ rtnl_unlock();
+ read_lock(&bond->lock);
+ }
+
+ bond_ab_arp_probe(bond);
+
re_arm:
if (bond->params.arp_interval) {
queue_delayed_work(bond->wq, &bond->arp_work, delta_in_ticks);
@@ -3128,7 +3277,8 @@ static void bond_info_show_master(struct seq_file *seq)
if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
bond->params.fail_over_mac)
- seq_printf(seq, " (fail_over_mac)");
+ seq_printf(seq, " (fail_over_mac %s)",
+ fail_over_mac_tbl[bond->params.fail_over_mac].modename);
seq_printf(seq, "\n");
@@ -3500,13 +3650,13 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
{
struct in_ifaddr *ifa = ptr;
struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev;
- struct bonding *bond, *bond_next;
- struct vlan_entry *vlan, *vlan_next;
+ struct bonding *bond;
+ struct vlan_entry *vlan;
if (dev_net(ifa->ifa_dev->dev) != &init_net)
return NOTIFY_DONE;
- list_for_each_entry_safe(bond, bond_next, &bond_dev_list, bond_list) {
+ list_for_each_entry(bond, &bond_dev_list, bond_list) {
if (bond->dev == event_dev) {
switch (event) {
case NETDEV_UP:
@@ -3520,11 +3670,7 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
}
}
- if (list_empty(&bond->vlan_list))
- continue;
-
- list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
- vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == event_dev) {
switch (event) {
@@ -3716,6 +3862,7 @@ static int bond_close(struct net_device *bond_dev)
write_lock_bh(&bond->lock);
+ bond->send_grat_arp = 0;
/* signal timers not to re-arm */
bond->kill_timers = 1;
@@ -3933,6 +4080,10 @@ static void bond_set_multicast_list(struct net_device *bond_dev)
* Do promisc before checking multicast_mode
*/
if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) {
+ /*
+ * FIXME: Need to handle the error when one of the multi-slaves
+ * encounters error.
+ */
bond_set_promiscuity(bond, 1);
}
@@ -3942,6 +4093,10 @@ static void bond_set_multicast_list(struct net_device *bond_dev)
/* set allmulti flag to slaves */
if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) {
+ /*
+ * FIXME: Need to handle the error when one of the multi-slaves
+ * encounters error.
+ */
bond_set_allmulti(bond, 1);
}
@@ -4060,10 +4215,10 @@ static int bond_set_mac_address(struct net_device *bond_dev, void *addr)
dprintk("bond=%p, name=%s\n", bond, (bond_dev ? bond_dev->name : "None"));
/*
- * If fail_over_mac is enabled, do nothing and return success.
- * Returning an error causes ifenslave to fail.
+ * If fail_over_mac is set to active, do nothing and return
+ * success. Returning an error causes ifenslave to fail.
*/
- if (bond->params.fail_over_mac)
+ if (bond->params.fail_over_mac == BOND_FOM_ACTIVE)
return 0;
if (!is_valid_ether_addr(sa->sa_data)) {
@@ -4518,9 +4673,9 @@ static void bond_free_all(void)
struct net_device *bond_dev = bond->dev;
bond_work_cancel_all(bond);
- netif_tx_lock_bh(bond_dev);
+ netif_addr_lock_bh(bond_dev);
bond_mc_list_destroy(bond);
- netif_tx_unlock_bh(bond_dev);
+ netif_addr_unlock_bh(bond_dev);
/* Release the bonded slaves */
bond_release_all(bond_dev);
bond_destroy(bond);
@@ -4568,7 +4723,7 @@ int bond_parse_parm(const char *buf, struct bond_parm_tbl *tbl)
static int bond_check_params(struct bond_params *params)
{
- int arp_validate_value;
+ int arp_validate_value, fail_over_mac_value;
/*
* Convert string parameters.
@@ -4618,11 +4773,11 @@ static int bond_check_params(struct bond_params *params)
}
}
- if (max_bonds < 1 || max_bonds > INT_MAX) {
+ if (max_bonds < 0 || max_bonds > INT_MAX) {
printk(KERN_WARNING DRV_NAME
": Warning: max_bonds (%d) not in range %d-%d, so it "
"was reset to BOND_DEFAULT_MAX_BONDS (%d)\n",
- max_bonds, 1, INT_MAX, BOND_DEFAULT_MAX_BONDS);
+ max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS);
max_bonds = BOND_DEFAULT_MAX_BONDS;
}
@@ -4658,6 +4813,13 @@ static int bond_check_params(struct bond_params *params)
use_carrier = 1;
}
+ if (num_grat_arp < 0 || num_grat_arp > 255) {
+ printk(KERN_WARNING DRV_NAME
+ ": Warning: num_grat_arp (%d) not in range 0-255 so it "
+ "was reset to 1 \n", num_grat_arp);
+ num_grat_arp = 1;
+ }
+
/* reset values for 802.3ad */
if (bond_mode == BOND_MODE_8023AD) {
if (!miimon) {
@@ -4814,7 +4976,7 @@ static int bond_check_params(struct bond_params *params)
printk("\n");
- } else {
+ } else if (max_bonds) {
/* miimon and arp_interval not set, we need one so things
* work as expected, see bonding.txt for details
*/
@@ -4836,15 +4998,29 @@ static int bond_check_params(struct bond_params *params)
primary = NULL;
}
- if (fail_over_mac && (bond_mode != BOND_MODE_ACTIVEBACKUP))
- printk(KERN_WARNING DRV_NAME
- ": Warning: fail_over_mac only affects "
- "active-backup mode.\n");
+ if (fail_over_mac) {
+ fail_over_mac_value = bond_parse_parm(fail_over_mac,
+ fail_over_mac_tbl);
+ if (fail_over_mac_value == -1) {
+ printk(KERN_ERR DRV_NAME
+ ": Error: invalid fail_over_mac \"%s\"\n",
+ arp_validate == NULL ? "NULL" : arp_validate);
+ return -EINVAL;
+ }
+
+ if (bond_mode != BOND_MODE_ACTIVEBACKUP)
+ printk(KERN_WARNING DRV_NAME
+ ": Warning: fail_over_mac only affects "
+ "active-backup mode.\n");
+ } else {
+ fail_over_mac_value = BOND_FOM_NONE;
+ }
/* fill params struct with the proper values */
params->mode = bond_mode;
params->xmit_policy = xmit_hashtype;
params->miimon = miimon;
+ params->num_grat_arp = num_grat_arp;
params->arp_interval = arp_interval;
params->arp_validate = arp_validate_value;
params->updelay = updelay;
@@ -4852,7 +5028,7 @@ static int bond_check_params(struct bond_params *params)
params->use_carrier = use_carrier;
params->lacp_fast = lacp_fast;
params->primary[0] = 0;
- params->fail_over_mac = fail_over_mac;
+ params->fail_over_mac = fail_over_mac_value;
if (primary) {
strncpy(params->primary, primary, IFNAMSIZ);
@@ -4866,15 +5042,28 @@ static int bond_check_params(struct bond_params *params)
static struct lock_class_key bonding_netdev_xmit_lock_key;
+static void bond_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *txq,
+ void *_unused)
+{
+ lockdep_set_class(&txq->_xmit_lock,
+ &bonding_netdev_xmit_lock_key);
+}
+
+static void bond_set_lockdep_class(struct net_device *dev)
+{
+ netdev_for_each_tx_queue(dev, bond_set_lockdep_class_one, NULL);
+}
+
/* Create a new bond based on the specified name and bonding parameters.
* If name is NULL, obtain a suitable "bond%d" name for us.
* Caller must NOT hold rtnl_lock; we need to release it here before we
* set up our sysfs entries.
*/
-int bond_create(char *name, struct bond_params *params, struct bonding **newbond)
+int bond_create(char *name, struct bond_params *params)
{
struct net_device *bond_dev;
- struct bonding *bond, *nxt;
+ struct bonding *bond;
int res;
rtnl_lock();
@@ -4882,7 +5071,7 @@ int bond_create(char *name, struct bond_params *params, struct bonding **newbond
/* Check to see if the bond already exists. */
if (name) {
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
+ list_for_each_entry(bond, &bond_dev_list, bond_list)
if (strnicmp(bond->dev->name, name, IFNAMSIZ) == 0) {
printk(KERN_ERR DRV_NAME
": cannot add bond %s; it already exists\n",
@@ -4923,10 +5112,7 @@ int bond_create(char *name, struct bond_params *params, struct bonding **newbond
goto out_bond;
}
- lockdep_set_class(&bond_dev->_xmit_lock, &bonding_netdev_xmit_lock_key);
-
- if (newbond)
- *newbond = bond_dev->priv;
+ bond_set_lockdep_class(bond_dev);
netif_carrier_off(bond_dev);
@@ -4957,7 +5143,7 @@ static int __init bonding_init(void)
{
int i;
int res;
- struct bonding *bond, *nxt;
+ struct bonding *bond;
printk(KERN_INFO "%s", version);
@@ -4973,7 +5159,7 @@ static int __init bonding_init(void)
init_rwsem(&bonding_rwsem);
for (i = 0; i < max_bonds; i++) {
- res = bond_create(NULL, &bonding_defaults, NULL);
+ res = bond_create(NULL, &bonding_defaults);
if (res)
goto err;
}
@@ -4987,7 +5173,7 @@ static int __init bonding_init(void)
goto out;
err:
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) {
+ list_for_each_entry(bond, &bond_dev_list, bond_list) {
bond_work_cancel_all(bond);
destroy_workqueue(bond->wq);
}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 68c41a00d93d..6caac0ffb2f2 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -50,9 +50,9 @@ extern struct bond_parm_tbl bond_mode_tbl[];
extern struct bond_parm_tbl bond_lacp_tbl[];
extern struct bond_parm_tbl xmit_hashtype_tbl[];
extern struct bond_parm_tbl arp_validate_tbl[];
+extern struct bond_parm_tbl fail_over_mac_tbl[];
static int expected_refcount = -1;
-static struct class *netdev_class;
/*--------------------------- Data Structures -----------------------------*/
/* Bonding sysfs lock. Why can't we just use the subsystem lock?
@@ -111,7 +111,6 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
char *ifname;
int rv, res = count;
struct bonding *bond;
- struct bonding *nxt;
sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
ifname = command + 1;
@@ -122,7 +121,7 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
if (command[0] == '+') {
printk(KERN_INFO DRV_NAME
": %s is being created...\n", ifname);
- rv = bond_create(ifname, &bonding_defaults, &bond);
+ rv = bond_create(ifname, &bonding_defaults);
if (rv) {
printk(KERN_INFO DRV_NAME ": Bond creation failed.\n");
res = rv;
@@ -134,7 +133,7 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
rtnl_lock();
down_write(&bonding_rwsem);
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
+ list_for_each_entry(bond, &bond_dev_list, bond_list)
if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
/* check the ref count on the bond's kobject.
* If it's > expected, then there's a file open,
@@ -548,42 +547,37 @@ static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attrib
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.fail_over_mac) + 1;
+ return sprintf(buf, "%s %d\n",
+ fail_over_mac_tbl[bond->params.fail_over_mac].modename,
+ bond->params.fail_over_mac);
}
static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count)
{
int new_value;
- int ret = count;
struct bonding *bond = to_bond(d);
if (bond->slave_cnt != 0) {
printk(KERN_ERR DRV_NAME
": %s: Can't alter fail_over_mac with slaves in bond.\n",
bond->dev->name);
- ret = -EPERM;
- goto out;
+ return -EPERM;
}
- if (sscanf(buf, "%d", &new_value) != 1) {
+ new_value = bond_parse_parm(buf, fail_over_mac_tbl);
+ if (new_value < 0) {
printk(KERN_ERR DRV_NAME
- ": %s: no fail_over_mac value specified.\n",
- bond->dev->name);
- ret = -EINVAL;
- goto out;
+ ": %s: Ignoring invalid fail_over_mac value %s.\n",
+ bond->dev->name, buf);
+ return -EINVAL;
}
- if ((new_value == 0) || (new_value == 1)) {
- bond->params.fail_over_mac = new_value;
- printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %d.\n",
- bond->dev->name, new_value);
- } else {
- printk(KERN_INFO DRV_NAME
- ": %s: Ignoring invalid fail_over_mac value %d.\n",
- bond->dev->name, new_value);
- }
-out:
- return ret;
+ bond->params.fail_over_mac = new_value;
+ printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n",
+ bond->dev->name, fail_over_mac_tbl[new_value].modename,
+ new_value);
+
+ return count;
}
static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac);
@@ -952,6 +946,45 @@ out:
static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp);
/*
+ * Show and set the number of grat ARP to send after a failover event.
+ */
+static ssize_t bonding_show_n_grat_arp(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ return sprintf(buf, "%d\n", bond->params.num_grat_arp);
+}
+
+static ssize_t bonding_store_n_grat_arp(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int new_value, ret = count;
+ struct bonding *bond = to_bond(d);
+
+ if (sscanf(buf, "%d", &new_value) != 1) {
+ printk(KERN_ERR DRV_NAME
+ ": %s: no num_grat_arp value specified.\n",
+ bond->dev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (new_value < 0 || new_value > 255) {
+ printk(KERN_ERR DRV_NAME
+ ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n",
+ bond->dev->name, new_value);
+ ret = -EINVAL;
+ goto out;
+ } else {
+ bond->params.num_grat_arp = new_value;
+ }
+out:
+ return ret;
+}
+static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, bonding_show_n_grat_arp, bonding_store_n_grat_arp);
+/*
* Show and set the MII monitor interval. There are two tricky bits
* here. First, if MII monitoring is activated, then we must disable
* ARP monitoring. Second, if the timer isn't running, we must
@@ -1388,6 +1421,7 @@ static struct attribute *per_bond_attrs[] = {
&dev_attr_updelay.attr,
&dev_attr_lacp_rate.attr,
&dev_attr_xmit_hash_policy.attr,
+ &dev_attr_num_grat_arp.attr,
&dev_attr_miimon.attr,
&dev_attr_primary.attr,
&dev_attr_use_carrier.attr,
@@ -1412,19 +1446,9 @@ static struct attribute_group bonding_group = {
*/
int bond_create_sysfs(void)
{
- int ret = 0;
- struct bonding *firstbond;
-
- /* get the netdev class pointer */
- firstbond = container_of(bond_dev_list.next, struct bonding, bond_list);
- if (!firstbond)
- return -ENODEV;
-
- netdev_class = firstbond->dev->dev.class;
- if (!netdev_class)
- return -ENODEV;
+ int ret;
- ret = class_create_file(netdev_class, &class_attr_bonding_masters);
+ ret = netdev_class_create_file(&class_attr_bonding_masters);
/*
* Permit multiple loads of the module by ignoring failures to
* create the bonding_masters sysfs file. Bonding devices
@@ -1437,8 +1461,12 @@ int bond_create_sysfs(void)
* configure multiple bonding devices.
*/
if (ret == -EEXIST) {
- netdev_class = NULL;
- return 0;
+ /* Is someone being kinky and naming a device bonding_master? */
+ if (__dev_get_by_name(&init_net,
+ class_attr_bonding_masters.attr.name))
+ printk(KERN_ERR
+ "network device named %s already exists in sysfs",
+ class_attr_bonding_masters.attr.name);
}
return ret;
@@ -1450,8 +1478,7 @@ int bond_create_sysfs(void)
*/
void bond_destroy_sysfs(void)
{
- if (netdev_class)
- class_remove_file(netdev_class, &class_attr_bonding_masters);
+ netdev_class_remove_file(&class_attr_bonding_masters);
}
/*
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index a3c74e20aa53..fb730ec0396f 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 "3.2.5"
-#define DRV_RELDATE "March 21, 2008"
+#define DRV_VERSION "3.3.0"
+#define DRV_RELDATE "June 10, 2008"
#define DRV_NAME "bonding"
#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver"
@@ -125,6 +125,7 @@ struct bond_params {
int mode;
int xmit_policy;
int miimon;
+ int num_grat_arp;
int arp_interval;
int arp_validate;
int use_carrier;
@@ -157,6 +158,7 @@ struct slave {
unsigned long jiffies;
unsigned long last_arp_rx;
s8 link; /* one of BOND_LINK_XXXX */
+ s8 new_link;
s8 state; /* one of BOND_STATE_XXXX */
u32 original_flags;
u32 original_mtu;
@@ -169,6 +171,11 @@ struct slave {
};
/*
+ * Link pseudo-state only used internally by monitors
+ */
+#define BOND_LINK_NOCHANGE -1
+
+/*
* Here are the locking policies for the two bonding locks:
*
* 1) Get bond->lock when reading/writing slave list.
@@ -241,6 +248,10 @@ static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
return (struct bonding *)slave->dev->master->priv;
}
+#define BOND_FOM_NONE 0
+#define BOND_FOM_ACTIVE 1
+#define BOND_FOM_FOLLOW 2
+
#define BOND_ARP_VALIDATE_NONE 0
#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
@@ -301,7 +312,7 @@ static inline void bond_unset_master_alb_flags(struct bonding *bond)
struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr);
int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
-int bond_create(char *name, struct bond_params *params, struct bonding **newbond);
+int bond_create(char *name, struct bond_params *params);
void bond_destroy(struct bonding *bond);
int bond_release_and_destroy(struct net_device *bond_dev, struct net_device *slave_dev);
int bond_create_sysfs(void);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 20:51:40 +0300