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[VLAN]: Avoid a 4-order allocation.

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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: Dan Aloni <da-x@monatomic.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Aloni
2007-03-02 20:44:51 -08:00
committed by David S. Miller
parent b5284e5aa9
commit 5c15bdec5c
22 changed files with 102 additions and 80 deletions
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13
drivers/net/e1000/e1000_main.c
View File

@ -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);
}