aboutsummaryrefslogtreecommitdiff
path: root/net/decnet
diff options
context:
space:
mode:
authorEric Dumazet <eric.dumazet@gmail.com>2009-11-04 05:43:23 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-04 05:43:23 -0800
commitc6d14c84566d6b70ad9dc1618db0dec87cca9300 (patch)
tree5ec75245cfda4d61e6b4506b6217f047ff4af01a /net/decnet
parentd0075634cf9d288988f57392a1f132d2053af961 (diff)
downloadlinux-stericsson-c6d14c84566d6b70ad9dc1618db0dec87cca9300.tar.gz
net: Introduce for_each_netdev_rcu() iterator
Adds RCU management to the list of netdevices. Convert some for_each_netdev() users to RCU version, if it can avoid read_lock-ing dev_base_lock Ie: read_lock(&dev_base_loack); for_each_netdev(net, dev) some_action(); read_unlock(&dev_base_lock); becomes : rcu_read_lock(); for_each_netdev_rcu(net, dev) some_action(); rcu_read_unlock(); Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet')
-rw-r--r--net/decnet/af_decnet.c6
-rw-r--r--net/decnet/dn_fib.c6
-rw-r--r--net/decnet/dn_route.c6
3 files changed, 9 insertions, 9 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 664965c87e16..2e355841ca99 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -749,9 +749,9 @@ static int dn_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (!(saddr->sdn_flags & SDF_WILD)) {
if (le16_to_cpu(saddr->sdn_nodeaddrl)) {
- read_lock(&dev_base_lock);
+ rcu_read_lock();
ldev = NULL;
- for_each_netdev(&init_net, dev) {
+ for_each_netdev_rcu(&init_net, dev) {
if (!dev->dn_ptr)
continue;
if (dn_dev_islocal(dev, dn_saddr2dn(saddr))) {
@@ -759,7 +759,7 @@ static int dn_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
break;
}
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (ldev == NULL)
return -EADDRNOTAVAIL;
}
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c
index 27ea2e9b080a..fd641f65e092 100644
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -607,8 +607,8 @@ static void dn_fib_del_ifaddr(struct dn_ifaddr *ifa)
ASSERT_RTNL();
/* Scan device list */
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
dn_db = dev->dn_ptr;
if (dn_db == NULL)
continue;
@@ -619,7 +619,7 @@ static void dn_fib_del_ifaddr(struct dn_ifaddr *ifa)
}
}
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (found_it == 0) {
fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 16, ifa);
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 57662cabaf9b..860286a3921b 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -908,8 +908,8 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old
dev_put(dev_out);
goto out;
}
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
if (!dev->dn_ptr)
continue;
if (!dn_dev_islocal(dev, oldflp->fld_src))
@@ -922,7 +922,7 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old
dev_out = dev;
break;
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (dev_out == NULL)
goto out;
dev_hold(dev_out);