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Date: Mon, 12 May 2014 15:08:43 +0800
From: Ding Tianhong <dingtianhong@...wei.com>
To: Jay Vosburgh <j.vosburgh@...il.com>,
Veaceslav Falico <vfalico@...il.com>,
Andy Gospodarek <andy@...yhouse.net>,
Netdev <netdev@...r.kernel.org>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH net-next] bonding: alloc the structure ad_info dynamically
in per slave
The struct ad_slave_info is very huge, and only be used for 802.3ad mode,
so alloc the structure dynamically could save 356 Bits for every slave in
non 802.3ad mode.
Cc: Jay Vosburgh <j.vosburgh@...il.com>
Cc: Veaceslav Falico <vfalico@...il.com>
Cc: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
---
drivers/net/bonding/bond_3ad.c | 54 +++++++++++++++++-----------------
drivers/net/bonding/bond_main.c | 42 ++++++++++++++++++++++----
drivers/net/bonding/bond_netlink.c | 2 +-
drivers/net/bonding/bond_procfs.c | 2 +-
drivers/net/bonding/bond_sysfs_slave.c | 2 +-
drivers/net/bonding/bonding.h | 2 +-
6 files changed, 67 insertions(+), 37 deletions(-)
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 9a0d61e..24faddd 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -157,7 +157,7 @@ static inline struct aggregator *__get_first_agg(struct port *port)
rcu_read_lock();
first_slave = bond_first_slave_rcu(bond);
- agg = first_slave ? &(SLAVE_AD_INFO(first_slave).aggregator) : NULL;
+ agg = first_slave ? &(SLAVE_AD_INFO(first_slave)->aggregator) : NULL;
rcu_read_unlock();
return agg;
@@ -241,7 +241,7 @@ static inline int __check_agg_selection_timer(struct port *port)
*/
static inline void __get_state_machine_lock(struct port *port)
{
- spin_lock_bh(&(SLAVE_AD_INFO(port->slave).state_machine_lock));
+ spin_lock_bh(&(SLAVE_AD_INFO(port->slave)->state_machine_lock));
}
/**
@@ -250,7 +250,7 @@ static inline void __get_state_machine_lock(struct port *port)
*/
static inline void __release_state_machine_lock(struct port *port)
{
- spin_unlock_bh(&(SLAVE_AD_INFO(port->slave).state_machine_lock));
+ spin_unlock_bh(&(SLAVE_AD_INFO(port->slave)->state_machine_lock));
}
/**
@@ -350,7 +350,7 @@ static u8 __get_duplex(struct port *port)
static inline void __initialize_port_locks(struct slave *slave)
{
/* make sure it isn't called twice */
- spin_lock_init(&(SLAVE_AD_INFO(slave).state_machine_lock));
+ spin_lock_init(&(SLAVE_AD_INFO(slave)->state_machine_lock));
}
/* Conversions */
@@ -688,8 +688,8 @@ static struct aggregator *__get_active_agg(struct aggregator *aggregator)
struct slave *slave;
bond_for_each_slave_rcu(bond, slave, iter)
- if (SLAVE_AD_INFO(slave).aggregator.is_active)
- return &(SLAVE_AD_INFO(slave).aggregator);
+ if (SLAVE_AD_INFO(slave)->aggregator.is_active)
+ return &(SLAVE_AD_INFO(slave)->aggregator);
return NULL;
}
@@ -1293,7 +1293,7 @@ static void ad_port_selection_logic(struct port *port)
}
/* search on all aggregators for a suitable aggregator for this port */
bond_for_each_slave(bond, slave, iter) {
- aggregator = &(SLAVE_AD_INFO(slave).aggregator);
+ aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
/* keep a free aggregator for later use(if needed) */
if (!aggregator->lag_ports) {
@@ -1504,7 +1504,7 @@ static void ad_agg_selection_logic(struct aggregator *agg)
best = (active && agg_device_up(active)) ? active : NULL;
bond_for_each_slave_rcu(bond, slave, iter) {
- agg = &(SLAVE_AD_INFO(slave).aggregator);
+ agg = &(SLAVE_AD_INFO(slave)->aggregator);
agg->is_active = 0;
@@ -1549,7 +1549,7 @@ static void ad_agg_selection_logic(struct aggregator *agg)
best->slave ? best->slave->dev->name : "NULL");
bond_for_each_slave_rcu(bond, slave, iter) {
- agg = &(SLAVE_AD_INFO(slave).aggregator);
+ agg = &(SLAVE_AD_INFO(slave)->aggregator);
pr_debug("Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
agg->aggregator_identifier, agg->num_of_ports,
@@ -1840,16 +1840,16 @@ void bond_3ad_bind_slave(struct slave *slave)
struct aggregator *aggregator;
/* check that the slave has not been initialized yet. */
- if (SLAVE_AD_INFO(slave).port.slave != slave) {
+ if (SLAVE_AD_INFO(slave)->port.slave != slave) {
/* port initialization */
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
ad_initialize_port(port, bond->params.lacp_fast);
__initialize_port_locks(slave);
port->slave = slave;
- port->actor_port_number = SLAVE_AD_INFO(slave).id;
+ port->actor_port_number = SLAVE_AD_INFO(slave)->id;
/* key is determined according to the link speed, duplex and user key(which
* is yet not supported)
*/
@@ -1874,7 +1874,7 @@ void bond_3ad_bind_slave(struct slave *slave)
__disable_port(port);
/* aggregator initialization */
- aggregator = &(SLAVE_AD_INFO(slave).aggregator);
+ aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
ad_initialize_agg(aggregator);
@@ -1903,8 +1903,8 @@ void bond_3ad_unbind_slave(struct slave *slave)
struct slave *slave_iter;
struct list_head *iter;
- aggregator = &(SLAVE_AD_INFO(slave).aggregator);
- port = &(SLAVE_AD_INFO(slave).port);
+ aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
+ port = &(SLAVE_AD_INFO(slave)->port);
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
@@ -1932,7 +1932,7 @@ void bond_3ad_unbind_slave(struct slave *slave)
(aggregator->lag_ports->next_port_in_aggregator)) {
/* find new aggregator for the related port(s) */
bond_for_each_slave(bond, slave_iter, iter) {
- new_aggregator = &(SLAVE_AD_INFO(slave_iter).aggregator);
+ new_aggregator = &(SLAVE_AD_INFO(slave_iter)->aggregator);
/* if the new aggregator is empty, or it is
* connected to our port only
*/
@@ -2010,7 +2010,7 @@ void bond_3ad_unbind_slave(struct slave *slave)
/* find the aggregator that this port is connected to */
bond_for_each_slave(bond, slave_iter, iter) {
- temp_aggregator = &(SLAVE_AD_INFO(slave_iter).aggregator);
+ temp_aggregator = &(SLAVE_AD_INFO(slave_iter)->aggregator);
prev_port = NULL;
/* search the port in the aggregator's related ports */
for (temp_port = temp_aggregator->lag_ports; temp_port;
@@ -2076,7 +2076,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
if (BOND_AD_INFO(bond).agg_select_timer &&
!(--BOND_AD_INFO(bond).agg_select_timer)) {
slave = bond_first_slave_rcu(bond);
- port = slave ? &(SLAVE_AD_INFO(slave).port) : NULL;
+ port = slave ? &(SLAVE_AD_INFO(slave)->port) : NULL;
/* select the active aggregator for the bond */
if (port) {
@@ -2094,7 +2094,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
/* for each port run the state machines */
bond_for_each_slave_rcu(bond, slave, iter) {
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
if (!port->slave) {
pr_warn_ratelimited("%s: Warning: Found an uninitialized port\n",
bond->dev->name);
@@ -2155,7 +2155,7 @@ static int bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave,
if (length >= sizeof(struct lacpdu)) {
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
if (!port->slave) {
pr_warn_ratelimited("%s: Warning: port of slave %s is uninitialized\n",
@@ -2212,7 +2212,7 @@ void bond_3ad_adapter_speed_changed(struct slave *slave)
{
struct port *port;
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
@@ -2245,7 +2245,7 @@ void bond_3ad_adapter_duplex_changed(struct slave *slave)
{
struct port *port;
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
@@ -2279,7 +2279,7 @@ void bond_3ad_handle_link_change(struct slave *slave, char link)
{
struct port *port;
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
@@ -2347,7 +2347,7 @@ int bond_3ad_set_carrier(struct bonding *bond)
ret = 0;
goto out;
}
- active = __get_active_agg(&(SLAVE_AD_INFO(first_slave).aggregator));
+ active = __get_active_agg(&(SLAVE_AD_INFO(first_slave)->aggregator));
if (active) {
/* are enough slaves available to consider link up? */
if (active->num_of_ports < bond->params.min_links) {
@@ -2384,7 +2384,7 @@ int __bond_3ad_get_active_agg_info(struct bonding *bond,
struct port *port;
bond_for_each_slave_rcu(bond, slave, iter) {
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
if (port->aggregator && port->aggregator->is_active) {
aggregator = port->aggregator;
break;
@@ -2444,7 +2444,7 @@ int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev)
first_ok_slave = NULL;
bond_for_each_slave_rcu(bond, slave, iter) {
- agg = SLAVE_AD_INFO(slave).port.aggregator;
+ agg = SLAVE_AD_INFO(slave)->port.aggregator;
if (!agg || agg->aggregator_identifier != agg_id)
continue;
@@ -2522,7 +2522,7 @@ void bond_3ad_update_lacp_rate(struct bonding *bond)
lacp_fast = bond->params.lacp_fast;
bond_for_each_slave(bond, slave, iter) {
- port = &(SLAVE_AD_INFO(slave).port);
+ port = &(SLAVE_AD_INFO(slave)->port);
__get_state_machine_lock(port);
if (lacp_fast)
port->actor_oper_port_state |= AD_STATE_LACP_TIMEOUT;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 9d08e00..7f32a61 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1163,6 +1163,35 @@ static void bond_upper_dev_unlink(struct net_device *bond_dev,
rtmsg_ifinfo(RTM_NEWLINK, slave_dev, IFF_SLAVE, GFP_KERNEL);
}
+static struct slave *bond_alloc_slave(struct bonding *bond)
+{
+ struct slave *slave = NULL;
+
+ slave = kzalloc(sizeof(struct slave), GFP_KERNEL);
+ if (!slave)
+ return NULL;
+
+ if (bond->params.mode == BOND_MODE_8023AD) {
+ SLAVE_AD_INFO(slave) = kzalloc(sizeof(struct ad_slave_info),
+ GFP_KERNEL);
+ if (!SLAVE_AD_INFO(slave)) {
+ kfree(slave);
+ return NULL;
+ }
+ }
+ return slave;
+}
+
+static void bond_free_slave(struct slave *slave)
+{
+ struct bonding *bond = bond_get_bond_by_slave(slave);
+
+ if (bond->params.mode == BOND_MODE_8023AD)
+ kfree(SLAVE_AD_INFO(slave));
+
+ kfree(slave);
+}
+
/* enslave device <slave> to bond device <master> */
int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
{
@@ -1290,11 +1319,12 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
bond->dev->addr_assign_type == NET_ADDR_RANDOM)
bond_set_dev_addr(bond->dev, slave_dev);
- new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL);
+ new_slave = bond_alloc_slave(bond);
if (!new_slave) {
res = -ENOMEM;
goto err_undo_flags;
}
+
/*
* Set the new_slave's queue_id to be zero. Queue ID mapping
* is set via sysfs or module option if desired.
@@ -1471,14 +1501,14 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
bond_set_slave_inactive_flags(new_slave, BOND_SLAVE_NOTIFY_NOW);
/* if this is the first slave */
if (!prev_slave) {
- SLAVE_AD_INFO(new_slave).id = 1;
+ SLAVE_AD_INFO(new_slave)->id = 1;
/* Initialize AD with the number of times that the AD timer is called in 1 second
* can be called only after the mac address of the bond is set
*/
bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL);
} else {
- SLAVE_AD_INFO(new_slave).id =
- SLAVE_AD_INFO(prev_slave).id + 1;
+ SLAVE_AD_INFO(new_slave)->id =
+ SLAVE_AD_INFO(prev_slave)->id + 1;
}
bond_3ad_bind_slave(new_slave);
@@ -1599,7 +1629,7 @@ err_restore_mtu:
dev_set_mtu(slave_dev, new_slave->original_mtu);
err_free:
- kfree(new_slave);
+ bond_free_slave(new_slave);
err_undo_flags:
/* Enslave of first slave has failed and we need to fix master's mac */
@@ -1786,7 +1816,7 @@ static int __bond_release_one(struct net_device *bond_dev,
slave_dev->priv_flags &= ~IFF_BONDING;
- kfree(slave);
+ bond_free_slave(slave);
return 0; /* deletion OK */
}
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index f847e16..0d06e75 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -59,7 +59,7 @@ static int bond_fill_slave_info(struct sk_buff *skb,
if (slave->bond->params.mode == BOND_MODE_8023AD) {
const struct aggregator *agg;
- agg = SLAVE_AD_INFO(slave).port.aggregator;
+ agg = SLAVE_AD_INFO(slave)->port.aggregator;
if (agg)
if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
agg->aggregator_identifier))
diff --git a/drivers/net/bonding/bond_procfs.c b/drivers/net/bonding/bond_procfs.c
index 013fdd0..6a261c8 100644
--- a/drivers/net/bonding/bond_procfs.c
+++ b/drivers/net/bonding/bond_procfs.c
@@ -190,7 +190,7 @@ static void bond_info_show_slave(struct seq_file *seq,
if (bond->params.mode == BOND_MODE_8023AD) {
const struct aggregator *agg
- = SLAVE_AD_INFO(slave).port.aggregator;
+ = SLAVE_AD_INFO(slave)->port.aggregator;
if (agg)
seq_printf(seq, "Aggregator ID: %d\n",
diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c
index 2e4eec5..89bc3b3 100644
--- a/drivers/net/bonding/bond_sysfs_slave.c
+++ b/drivers/net/bonding/bond_sysfs_slave.c
@@ -70,7 +70,7 @@ static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
const struct aggregator *agg;
if (slave->bond->params.mode == BOND_MODE_8023AD) {
- agg = SLAVE_AD_INFO(slave).port.aggregator;
+ agg = SLAVE_AD_INFO(slave)->port.aggregator;
if (agg)
return sprintf(buf, "%d\n",
agg->aggregator_identifier);
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index c1c7c2f..c3f44eb 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -205,7 +205,7 @@ struct slave {
u32 speed;
u16 queue_id;
u8 perm_hwaddr[ETH_ALEN];
- struct ad_slave_info ad_info; /* HUGE - better to dynamically alloc */
+ struct ad_slave_info *ad_info;
struct tlb_slave_info tlb_info;
#ifdef CONFIG_NET_POLL_CONTROLLER
struct netpoll *np;
--
1.8.0
--
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