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Date: Mon, 23 Jun 2008 20:54:23 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
Subject: [PATCH 3/3]: netdev: Do not use TX lock to protect address lists.
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@...emloft.net>
---
drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 2 -
drivers/media/dvb/dvb-core/dvb_net.c | 6 +--
drivers/net/bonding/bond_main.c | 24 +++++----------
drivers/net/sfc/efx.c | 6 +--
drivers/net/tun.c | 12 ++-----
drivers/net/wireless/libertas/main.c | 6 +--
net/core/dev.c | 38 +++++++----------------
net/core/dev_mcast.c | 32 ++++++--------------
net/mac80211/main.c | 12 ++-----
net/mac80211/mlme.c | 6 +--
10 files changed, 46 insertions(+), 98 deletions(-)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 261ab71..cd2fb95 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -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 */
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c
index 809d18c..c2c0337 100644
--- a/drivers/media/dvb/dvb-core/dvb_net.c
+++ b/drivers/media/dvb/dvb-core/dvb_net.c
@@ -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);
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 6601ffc..f92fa58 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1552,14 +1552,12 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
dev_set_allmulti(slave_dev, 1);
}
- 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) {
@@ -1923,11 +1921,9 @@ 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);
@@ -2048,11 +2044,9 @@ 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);
@@ -4656,11 +4650,9 @@ 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);
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index e1257e5..7b2015f 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -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);
}
}
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 87eb4e1..00238fd 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -757,11 +757,9 @@ static int tun_chr_ioctl(struct inode *inode, struct file *file,
/** Add the specified group to the character device's multicast filter
* list. */
rtnl_lock();
- netif_tx_lock_bh(tun->dev);
- netif_addr_lock(tun->dev);
+ netif_addr_lock_bh(tun->dev);
add_multi(tun->chr_filter, ifr.ifr_hwaddr.sa_data);
- netif_addr_unlock(tun->dev);
- netif_tx_unlock_bh(tun->dev);
+ netif_addr_unlock_bh(tun->dev);
rtnl_unlock();
DBG(KERN_DEBUG "%s: add multi: %s\n",
@@ -772,11 +770,9 @@ static int tun_chr_ioctl(struct inode *inode, struct file *file,
/** Remove the specified group from the character device's multicast
* filter list. */
rtnl_lock();
- netif_tx_lock_bh(tun->dev);
- netif_addr_lock(tun->dev);
+ netif_addr_lock_bh(tun->dev);
del_multi(tun->chr_filter, ifr.ifr_hwaddr.sa_data);
- netif_addr_unlock(tun->dev);
- netif_tx_unlock_bh(tun->dev);
+ netif_addr_unlock_bh(tun->dev);
rtnl_unlock();
DBG(KERN_DEBUG "%s: del multi: %s\n",
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 42e9b27..14d5d61 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -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;
diff --git a/net/core/dev.c b/net/core/dev.c
index 5f43ae0..1c54e39 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2942,11 +2942,9 @@ 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,
@@ -3024,13 +3022,11 @@ 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);
@@ -3052,13 +3048,11 @@ 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);
@@ -3125,14 +3119,12 @@ 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);
@@ -3148,9 +3140,7 @@ 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,
@@ -3158,9 +3148,7 @@ 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);
@@ -3180,8 +3168,7 @@ 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;
@@ -3189,8 +3176,7 @@ 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)
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index b6b2a12..5402b3b 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -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;
}
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 59fec7e..3041924 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -314,11 +314,9 @@ 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:
@@ -510,11 +508,9 @@ 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:
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 92d7b46..4817330 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4047,16 +4047,14 @@ 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,
--
1.5.6
--
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