Commit 5c15bdec authored by Dan Aloni's avatar Dan Aloni Committed by David S. Miller
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[VLAN]: Avoid a 4-order allocation.



This patch splits the vlan_group struct into a multi-allocated struct. On
x86_64, the size of the original struct is a little more than 32KB, causing
a 4-order allocation, which is prune to problems caused by buddy-system
external fragmentation conditions.

I couldn't just use vmalloc() because vfree() cannot be called in the
softirq context of the RCU callback.

Signed-off-by: default avatarDan Aloni <da-x@monatomic.org>
Acked-by: default avatarJeff Garzik <jeff@garzik.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b5284e5a
......@@ -448,8 +448,7 @@ static void cp_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
spin_lock_irqsave(&cp->lock, flags);
cp->cpcmd &= ~RxVlanOn;
cpw16(CpCmd, cp->cpcmd);
if (cp->vlgrp)
cp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(cp->vlgrp, vid, NULL);
spin_unlock_irqrestore(&cp->lock, flags);
}
#endif /* CP_VLAN_TAG_USED */
......
......@@ -2293,10 +2293,7 @@ static void ace_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
local_irq_save(flags);
ace_mask_irq(dev);
if (ap->vlgrp)
ap->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(ap->vlgrp, vid, NULL);
ace_unmask_irq(dev);
local_irq_restore(flags);
}
......
......@@ -1737,8 +1737,7 @@ static void amd8111e_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid
{
struct amd8111e_priv *lp = netdev_priv(dev);
spin_lock_irq(&lp->lock);
if (lp->vlgrp)
lp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(lp->vlgrp, vid, NULL);
spin_unlock_irq(&lp->lock);
}
#endif
......
......@@ -1252,8 +1252,7 @@ static void atl1_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
spin_lock_irqsave(&adapter->lock, flags);
/* atl1_irq_disable(adapter); */
if (adapter->vlgrp)
adapter->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(adapter->vlgrp, vid, NULL);
/* atl1_irq_enable(adapter); */
spin_unlock_irqrestore(&adapter->lock, flags);
/* We don't do Vlan filtering */
......@@ -1266,7 +1265,7 @@ static void atl1_restore_vlan(struct atl1_adapter *adapter)
if (adapter->vlgrp) {
u16 vid;
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
if (!adapter->vlgrp->vlan_devices[vid])
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
atl1_vlan_rx_add_vid(adapter->netdev, vid);
}
......
......@@ -4467,9 +4467,7 @@ bnx2_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
struct bnx2 *bp = netdev_priv(dev);
bnx2_netif_stop(bp);
if (bp->vlgrp)
bp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(bp->vlgrp, vid, NULL);
bnx2_set_rx_mode(dev);
bnx2_netif_start(bp);
......
......@@ -488,9 +488,9 @@ static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid)
/* Save and then restore vlan_dev in the grp array,
* since the slave's driver might clear it.
*/
vlan_dev = bond->vlgrp->vlan_devices[vid];
vlan_dev = vlan_group_get_device(bond->vlgrp, vid);
slave_dev->vlan_rx_kill_vid(slave_dev, vid);
bond->vlgrp->vlan_devices[vid] = vlan_dev;
vlan_group_set_device(bond->vlgrp, vid, vlan_dev);
}
}
......@@ -550,9 +550,9 @@ static void bond_del_vlans_from_slave(struct bonding *bond, struct net_device *s
/* Save and then restore vlan_dev in the grp array,
* since the slave's driver might clear it.
*/
vlan_dev = bond->vlgrp->vlan_devices[vlan->vlan_id];
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
slave_dev->vlan_rx_kill_vid(slave_dev, vlan->vlan_id);
bond->vlgrp->vlan_devices[vlan->vlan_id] = vlan_dev;
vlan_group_set_device(bond->vlgrp, vlan->vlan_id, vlan_dev);
}
unreg:
......@@ -2397,7 +2397,7 @@ 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) {
vlan_dev = bond->vlgrp->vlan_devices[vlan->vlan_id];
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == rt->u.dst.dev) {
vlan_id = vlan->vlan_id;
dprintk("basa: vlan match on %s %d\n",
......@@ -2444,7 +2444,7 @@ static void bond_send_gratuitous_arp(struct bonding *bond)
}
list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
vlan_dev = bond->vlgrp->vlan_devices[vlan->vlan_id];
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan->vlan_ip) {
bond_arp_send(slave->dev, ARPOP_REPLY, vlan->vlan_ip,
vlan->vlan_ip, vlan->vlan_id);
......@@ -3371,7 +3371,7 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
vlan_list) {
vlan_dev = bond->vlgrp->vlan_devices[vlan->vlan_id];
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == event_dev) {
switch (event) {
case NETDEV_UP:
......
......@@ -889,8 +889,7 @@ static void vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
struct adapter *adapter = dev->priv;
spin_lock_irq(&adapter->async_lock);
if (adapter->vlan_grp)
adapter->vlan_grp->vlan_devices[vid] = NULL;
vlan_group_set_device(adapter->vlan_grp, vid, NULL);
spin_unlock_irq(&adapter->async_lock);
}
#endif
......
......@@ -160,14 +160,16 @@ static struct net_device *get_iff_from_mac(struct adapter *adapter,
int i;
for_each_port(adapter, i) {
const struct vlan_group *grp;
struct vlan_group *grp;
struct net_device *dev = adapter->port[i];
const struct port_info *p = netdev_priv(dev);
if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
if (vlan && vlan != VLAN_VID_MASK) {
grp = p->vlan_grp;
dev = grp ? grp->vlan_devices[vlan] : NULL;
dev = NULL;
if (grp)
dev = vlan_group_get_device(grp, vlan);
} else
while (dev->master)
dev = dev->master;
......
......@@ -376,7 +376,7 @@ e1000_update_mng_vlan(struct e1000_adapter *adapter)
uint16_t vid = adapter->hw.mng_cookie.vlan_id;
uint16_t old_vid = adapter->mng_vlan_id;
if (adapter->vlgrp) {
if (!adapter->vlgrp->vlan_devices[vid]) {
if (!vlan_group_get_device(adapter->vlgrp, vid)) {
if (adapter->hw.mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
e1000_vlan_rx_add_vid(netdev, vid);
......@@ -386,7 +386,7 @@ e1000_update_mng_vlan(struct e1000_adapter *adapter)
if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
(vid != old_vid) &&
!adapter->vlgrp->vlan_devices[old_vid])
!vlan_group_get_device(adapter->vlgrp, old_vid))
e1000_vlan_rx_kill_vid(netdev, old_vid);
} else
adapter->mng_vlan_id = vid;
......@@ -1482,7 +1482,7 @@ e1000_close(struct net_device *netdev)
if ((adapter->hw.mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
!(adapter->vlgrp &&
adapter->vlgrp->vlan_devices[adapter->mng_vlan_id])) {
vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
}
......@@ -4998,10 +4998,7 @@ e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
uint32_t vfta, index;
e1000_irq_disable(adapter);
if (adapter->vlgrp)
adapter->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(adapter->vlgrp, vid, NULL);
e1000_irq_enable(adapter);
if ((adapter->hw.mng_cookie.status &
......@@ -5027,7 +5024,7 @@ e1000_restore_vlan(struct e1000_adapter *adapter)
if (adapter->vlgrp) {
uint16_t vid;
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
if (!adapter->vlgrp->vlan_devices[vid])
if (!vlan_group_get_device(adapter->vlgrp, vid))
continue;
e1000_vlan_rx_add_vid(adapter->netdev, vid);
}
......
......@@ -1939,8 +1939,7 @@ static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
int index;
u64 hret;
if (port->vgrp)
port->vgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(port->vgrp, vid, NULL);
cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (!cb1) {
......
......@@ -1132,8 +1132,7 @@ static void gfar_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
spin_lock_irqsave(&priv->rxlock, flags);
if (priv->vlgrp)
priv->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(priv->vgrp, vid, NULL);
spin_unlock_irqrestore(&priv->rxlock, flags);
}
......
......@@ -2213,8 +2213,7 @@ ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
ixgb_irq_disable(adapter);
if(adapter->vlgrp)
adapter->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(adapter->vlgrp, vid, NULL);
ixgb_irq_enable(adapter);
......@@ -2234,7 +2233,7 @@ ixgb_restore_vlan(struct ixgb_adapter *adapter)
if(adapter->vlgrp) {
uint16_t vid;
for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
if(!adapter->vlgrp->vlan_devices[vid])
if(!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgb_vlan_rx_add_vid(adapter->netdev, vid);
}
......
......@@ -514,8 +514,7 @@ static void ns83820_vlan_rx_kill_vid(struct net_device *ndev, unsigned short vid
spin_lock_irq(&dev->misc_lock);
spin_lock(&dev->tx_lock);
if (dev->vlgrp)
dev->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(dev->vlgrp, vid, NULL);
spin_unlock(&dev->tx_lock);
spin_unlock_irq(&dev->misc_lock);
}
......
......@@ -890,8 +890,7 @@ static void rtl8169_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
unsigned long flags;
spin_lock_irqsave(&tp->lock, flags);
if (tp->vlgrp)
tp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(tp->vlgrp, vid, NULL);
spin_unlock_irqrestore(&tp->lock, flags);
}
......
......@@ -325,8 +325,7 @@ static void s2io_vlan_rx_kill_vid(struct net_device *dev, unsigned long vid)
unsigned long flags;
spin_lock_irqsave(&nic->tx_lock, flags);
if (nic->vlgrp)
nic->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(nic->vlgrp, vid, NULL);
spin_unlock_irqrestore(&nic->tx_lock, flags);
}
......
......@@ -1053,8 +1053,7 @@ static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
if (sky2->vlgrp)
sky2->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(sky2->vlgrp, vid, NULL);
netif_tx_unlock_bh(dev);
}
......
......@@ -677,8 +677,7 @@ static void netdev_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
spin_lock(&np->lock);
if (debug > 1)
printk("%s: removing vlanid %d from vlan filter\n", dev->name, vid);
if (np->vlgrp)
np->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(np->vlgrp, vid, NULL);
set_rx_mode(dev);
spin_unlock(&np->lock);
}
......@@ -1738,7 +1737,7 @@ static void set_rx_mode(struct net_device *dev)
int vlan_count = 0;
void __iomem *filter_addr = ioaddr + HashTable + 8;
for (i = 0; i < VLAN_VID_MASK; i++) {
if (np->vlgrp->vlan_devices[i]) {
if (vlan_group_get_device(np->vlgrp, i)) {
if (vlan_count >= 32)
break;
writew(cpu_to_be16(i), filter_addr);
......
......@@ -9114,8 +9114,7 @@ static void tg3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
tg3_netif_stop(tp);
tg3_full_lock(tp, 0);
if (tp->vlgrp)
tp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(tp->vlgrp, vid, NULL);
tg3_full_unlock(tp);
if (netif_running(dev))
......
......@@ -746,8 +746,7 @@ typhoon_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
struct typhoon *tp = netdev_priv(dev);
spin_lock_bh(&tp->state_lock);
if(tp->vlgrp)
tp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(tp->vlgrp, vid, NULL);
spin_unlock_bh(&tp->state_lock);
}
......
......@@ -3654,7 +3654,7 @@ qeth_verify_vlan_dev(struct net_device *dev, struct qeth_card *card)
return rc;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++){
if (vg->vlan_devices[i] == dev){
if (vlan_group_get_device(vg, i) == dev){
rc = QETH_VLAN_CARD;
break;
}
......@@ -5261,7 +5261,7 @@ qeth_free_vlan_addresses4(struct qeth_card *card, unsigned short vid)
QETH_DBF_TEXT(trace, 4, "frvaddr4");
rcu_read_lock();
in_dev = __in_dev_get_rcu(card->vlangrp->vlan_devices[vid]);
in_dev = __in_dev_get_rcu(vlan_group_get_device(card->vlangrp, vid));
if (!in_dev)
goto out;
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
......@@ -5288,7 +5288,7 @@ qeth_free_vlan_addresses6(struct qeth_card *card, unsigned short vid)
QETH_DBF_TEXT(trace, 4, "frvaddr6");
in6_dev = in6_dev_get(card->vlangrp->vlan_devices[vid]);
in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
if (!in6_dev)
return;
for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next){
......@@ -5360,7 +5360,7 @@ qeth_layer2_process_vlans(struct qeth_card *card, int clear)
if (!card->vlangrp)
return;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (card->vlangrp->vlan_devices[i] == NULL)
if (vlan_group_get_device(card->vlangrp, i) == NULL)
continue;
if (clear)
qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
......@@ -5398,8 +5398,7 @@ qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
spin_lock_irqsave(&card->vlanlock, flags);
/* unregister IP addresses of vlan device */
qeth_free_vlan_addresses(card, vid);
if (card->vlangrp)
card->vlangrp->vlan_devices[vid] = NULL;
vlan_group_set_device(card->vlangrp, vid, NULL);
spin_unlock_irqrestore(&card->vlanlock, flags);
if (card->options.layer2)
qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
......@@ -5662,10 +5661,11 @@ qeth_add_vlan_mc(struct qeth_card *card)
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
struct net_device *netdev = vlan_group_get_device(vg, i);
if (netdev == NULL ||
!(netdev->flags & IFF_UP))
continue;
in_dev = in_dev_get(vg->vlan_devices[i]);
in_dev = in_dev_get(netdev);
if (!in_dev)
continue;
read_lock(&in_dev->mc_list_lock);
......@@ -5749,10 +5749,11 @@ qeth_add_vlan_mc6(struct qeth_card *card)
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
struct net_device *netdev = vlan_group_get_device(vg, i);
if (netdev == NULL ||
!(netdev->flags & IFF_UP))
continue;
in_dev = in6_dev_get(vg->vlan_devices[i]);
in_dev = in6_dev_get(netdev);
if (!in_dev)
continue;
read_lock(&in_dev->lock);
......
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