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netdev: Do not use TX lock to protect address lists. 

Now that we have a specific lock to protect the network
device unicast and multicast lists, remove extraneous
grabs of the TX lock in cases where the code only needs
address list protection.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-07-15 00:15:08 -07:00
parent e308a5d806
commit b9e4085768
9 changed files with 42 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/ulp/ipoib/ipoib_multicast.c
View File

@ -774,7 +774,6 @@ void ipoib_mcast_restart_task(struct work_struct *work)
ipoib_mcast_stop_thread(dev, 0);
local_irq_save(flags);
netif_tx_lock(dev);
netif_addr_lock(dev);
spin_lock(&priv->lock);
@ -853,7 +852,6 @@ void ipoib_mcast_restart_task(struct work_struct *work)
spin_unlock(&priv->lock);
netif_addr_unlock(dev);
netif_tx_unlock(dev);
local_irq_restore(flags);
/* We have to cancel outside of the spinlock */

6
drivers/media/dvb/dvb-core/dvb_net.c
View File

@ -1133,8 +1133,7 @@ static void wq_set_multicast_list (struct work_struct *work)
dvb_net_feed_stop(dev);
priv->rx_mode = RX_MODE_UNI;
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
if (dev->flags & IFF_PROMISC) {
dprintk("%s: promiscuous mode\n", dev->name);
@ -1159,8 +1158,7 @@ static void wq_set_multicast_list (struct work_struct *work)
}
}
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
dvb_net_feed_start(dev);
}

24
drivers/net/bonding/bond_main.c
View File

@ -1567,14 +1567,12 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
goto err_close;
}
netif_tx_lock_bh(bond_dev);
netif_addr_lock(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_addr_unlock(bond_dev);
netif_tx_unlock_bh(bond_dev);
netif_addr_unlock_bh(bond_dev);
}
if (bond->params.mode == BOND_MODE_8023AD) {
@ -1938,11 +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(bond_dev);
netif_addr_lock_bh(bond_dev);
bond_mc_list_flush(bond_dev, slave_dev);
netif_addr_unlock(bond_dev);
netif_tx_unlock_bh(bond_dev);
netif_addr_unlock_bh(bond_dev);
}
netdev_set_master(slave_dev, NULL);
@ -2063,11 +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(bond_dev);
netif_addr_lock_bh(bond_dev);
bond_mc_list_flush(bond_dev, slave_dev);
netif_addr_unlock(bond_dev);
netif_tx_unlock_bh(bond_dev);
netif_addr_unlock_bh(bond_dev);
}
netdev_set_master(slave_dev, NULL);
@ -4679,11 +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(bond_dev);
netif_addr_lock_bh(bond_dev);
bond_mc_list_destroy(bond);
netif_addr_unlock(bond_dev);
netif_tx_unlock_bh(bond_dev);
netif_addr_unlock_bh(bond_dev);
/* Release the bonded slaves */
bond_release_all(bond_dev);
bond_destroy(bond);

6
drivers/net/sfc/efx.c
View File

@ -696,10 +696,8 @@ static void efx_stop_port(struct efx_nic *efx)
/* Serialise against efx_set_multicast_list() */
if (efx_dev_registered(efx)) {
netif_tx_lock_bh(efx->net_dev);
netif_addr_lock(efx->net_dev);
netif_addr_unlock(efx->net_dev);
netif_tx_unlock_bh(efx->net_dev);
netif_addr_lock_bh(efx->net_dev);
netif_addr_unlock_bh(efx->net_dev);
}
}

6
drivers/net/wireless/libertas/main.c
View File

@ -593,8 +593,7 @@ static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
return nr_addrs;
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
@ -609,8 +608,7 @@ static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
print_mac(mac, mc_list->dmi_addr));
i++;
}
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
if (mc_list)
return -EOVERFLOW;

38
net/core/dev.c
View File

@ -2981,11 +2981,9 @@ void __dev_set_rx_mode(struct net_device *dev)
void dev_set_rx_mode(struct net_device *dev)
{
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
__dev_set_rx_mode(dev);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
}
int __dev_addr_delete(struct dev_addr_list **list, int *count,
@ -3063,13 +3061,11 @@ int dev_unicast_delete(struct net_device *dev, void *addr, int alen)
ASSERT_RTNL();
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
return err;
}
EXPORT_SYMBOL(dev_unicast_delete);
@ -3091,13 +3087,11 @@ int dev_unicast_add(struct net_device *dev, void *addr, int alen)
ASSERT_RTNL();
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
return err;
}
EXPORT_SYMBOL(dev_unicast_add);
@ -3164,14 +3158,12 @@ int dev_unicast_sync(struct net_device *to, struct net_device *from)
{
int err = 0;
netif_tx_lock_bh(to);
netif_addr_lock(to);
netif_addr_lock_bh(to);
err = __dev_addr_sync(&to->uc_list, &to->uc_count,
&from->uc_list, &from->uc_count);
if (!err)
__dev_set_rx_mode(to);
netif_addr_unlock(to);
netif_tx_unlock_bh(to);
netif_addr_unlock_bh(to);
return err;
}
EXPORT_SYMBOL(dev_unicast_sync);
@ -3187,9 +3179,7 @@ EXPORT_SYMBOL(dev_unicast_sync);
*/
void dev_unicast_unsync(struct net_device *to, struct net_device *from)
{
netif_tx_lock_bh(from);
netif_addr_lock(from);
netif_tx_lock_bh(to);
netif_addr_lock_bh(from);
netif_addr_lock(to);
__dev_addr_unsync(&to->uc_list, &to->uc_count,
@ -3197,9 +3187,7 @@ void dev_unicast_unsync(struct net_device *to, struct net_device *from)
__dev_set_rx_mode(to);
netif_addr_unlock(to);
netif_tx_unlock_bh(to);
netif_addr_unlock(from);
netif_tx_unlock_bh(from);
netif_addr_unlock_bh(from);
}
EXPORT_SYMBOL(dev_unicast_unsync);
@ -3219,8 +3207,7 @@ static void __dev_addr_discard(struct dev_addr_list **list)
static void dev_addr_discard(struct net_device *dev)
{
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
__dev_addr_discard(&dev->uc_list);
dev->uc_count = 0;
@ -3228,8 +3215,7 @@ static void dev_addr_discard(struct net_device *dev)
__dev_addr_discard(&dev->mc_list);
dev->mc_count = 0;
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
}
unsigned dev_get_flags(const struct net_device *dev)

32
net/core/dev_mcast.c
View File

@ -72,8 +72,7 @@ int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
{
int err;
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
err = __dev_addr_delete(&dev->mc_list, &dev->mc_count,
addr, alen, glbl);
if (!err) {
@ -84,8 +83,7 @@ int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
__dev_set_rx_mode(dev);
}
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
return err;
}
@ -97,13 +95,11 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
{
int err;
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
if (!err)
__dev_set_rx_mode(dev);
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
return err;
}
@ -123,14 +119,12 @@ int dev_mc_sync(struct net_device *to, struct net_device *from)
{
int err = 0;
netif_tx_lock_bh(to);
netif_addr_lock(to);
netif_addr_lock_bh(to);
err = __dev_addr_sync(&to->mc_list, &to->mc_count,
&from->mc_list, &from->mc_count);
if (!err)
__dev_set_rx_mode(to);
netif_addr_unlock(to);
netif_tx_unlock_bh(to);
netif_addr_unlock_bh(to);
return err;
}
@ -149,9 +143,7 @@ EXPORT_SYMBOL(dev_mc_sync);
*/
void dev_mc_unsync(struct net_device *to, struct net_device *from)
{
netif_tx_lock_bh(from);
netif_addr_lock(from);
netif_tx_lock_bh(to);
netif_addr_lock_bh(from);
netif_addr_lock(to);
__dev_addr_unsync(&to->mc_list, &to->mc_count,
@ -159,9 +151,7 @@ void dev_mc_unsync(struct net_device *to, struct net_device *from)
__dev_set_rx_mode(to);
netif_addr_unlock(to);
netif_tx_unlock_bh(to);
netif_addr_unlock(from);
netif_tx_unlock_bh(from);
netif_addr_unlock_bh(from);
}
EXPORT_SYMBOL(dev_mc_unsync);
@ -174,8 +164,7 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
if (v == SEQ_START_TOKEN)
return 0;
netif_tx_lock_bh(dev);
netif_addr_lock(dev);
netif_addr_lock_bh(dev);
for (m = dev->mc_list; m; m = m->next) {
int i;
@ -187,8 +176,7 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
seq_putc(seq, '\n');
}
netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
netif_addr_unlock_bh(dev);
return 0;
}

12
net/mac80211/main.c
View File

@ -291,11 +291,9 @@ static int ieee80211_open(struct net_device *dev)
if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
local->fif_other_bss++;
netif_tx_lock_bh(local->mdev);
netif_addr_lock(local->mdev);
netif_addr_lock_bh(local->mdev);
ieee80211_configure_filter(local);
netif_addr_unlock(local->mdev);
netif_tx_unlock_bh(local->mdev);
netif_addr_unlock_bh(local->mdev);
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
@ -492,11 +490,9 @@ static int ieee80211_stop(struct net_device *dev)
if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
local->fif_other_bss--;
netif_tx_lock_bh(local->mdev);
netif_addr_lock(local->mdev);
netif_addr_lock_bh(local->mdev);
ieee80211_configure_filter(local);
netif_addr_unlock(local->mdev);
netif_tx_unlock_bh(local->mdev);
netif_addr_unlock_bh(local->mdev);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
case IEEE80211_IF_TYPE_STA:

6
net/mac80211/mlme.c
View File

@ -4064,16 +4064,14 @@ static int ieee80211_sta_start_scan(struct net_device *dev,
local->scan_band = IEEE80211_BAND_2GHZ;
local->scan_dev = dev;
netif_tx_lock_bh(local->mdev);
netif_addr_lock(local->mdev);
netif_addr_lock_bh(local->mdev);
local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
local->ops->configure_filter(local_to_hw(local),
FIF_BCN_PRBRESP_PROMISC,
&local->filter_flags,
local->mdev->mc_count,
local->mdev->mc_list);
netif_addr_unlock(local->mdev);
netif_tx_unlock_bh(local->mdev);
netif_addr_unlock_bh(local->mdev);
/* TODO: start scan as soon as all nullfunc frames are ACKed */
queue_delayed_work(local->hw.workqueue, &local->scan_work,