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>
diff --git a/net/core/dev.c b/net/core/dev.c
index ef1502d..9b49f74 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2981,11 +2981,9 @@
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 @@
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 @@
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 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 @@
*/
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 @@
__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 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 @@
__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 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 @@
__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 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 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 @@
*/
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 @@
__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 @@
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 @@
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 095b7d9..af0056e 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -291,11 +291,9 @@
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 @@
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 1232ba2..d7c371e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4064,16 +4064,14 @@
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,