net: reintroduce missing rcu_assign_pointer() calls
commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to
RCU_INIT_POINTER) did a lot of incorrect changes, since it did a
complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x,
y).
We miss needed barriers, even on x86, when y is not NULL.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 0ba0866..a225d5e 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -429,7 +429,7 @@
ndev->tstamp = jiffies;
addrconf_sysctl_register(ndev);
/* protected by rtnl_lock */
- RCU_INIT_POINTER(dev->ip6_ptr, ndev);
+ rcu_assign_pointer(dev->ip6_ptr, ndev);
/* Join all-node multicast group */
ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index e1f7761..aa21da6 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -218,8 +218,8 @@
{
struct ip6_tnl __rcu **tp = ip6_tnl_bucket(ip6n, &t->parms);
- RCU_INIT_POINTER(t->next , rtnl_dereference(*tp));
- RCU_INIT_POINTER(*tp, t);
+ rcu_assign_pointer(t->next , rtnl_dereference(*tp));
+ rcu_assign_pointer(*tp, t);
}
/**
@@ -237,7 +237,7 @@
(iter = rtnl_dereference(*tp)) != NULL;
tp = &iter->next) {
if (t == iter) {
- RCU_INIT_POINTER(*tp, t->next);
+ rcu_assign_pointer(*tp, t->next);
break;
}
}
@@ -1450,7 +1450,7 @@
t->parms.proto = IPPROTO_IPV6;
dev_hold(dev);
- RCU_INIT_POINTER(ip6n->tnls_wc[0], t);
+ rcu_assign_pointer(ip6n->tnls_wc[0], t);
return 0;
}
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index a4894f4..d02f7e4 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -131,7 +131,7 @@
int rawv6_mh_filter_register(mh_filter_t filter)
{
- RCU_INIT_POINTER(mh_filter, filter);
+ rcu_assign_pointer(mh_filter, filter);
return 0;
}
EXPORT_SYMBOL(rawv6_mh_filter_register);
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3b6dac9..133768e 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -182,7 +182,7 @@
(iter = rtnl_dereference(*tp)) != NULL;
tp = &iter->next) {
if (t == iter) {
- RCU_INIT_POINTER(*tp, t->next);
+ rcu_assign_pointer(*tp, t->next);
break;
}
}
@@ -192,8 +192,8 @@
{
struct ip_tunnel __rcu **tp = ipip6_bucket(sitn, t);
- RCU_INIT_POINTER(t->next, rtnl_dereference(*tp));
- RCU_INIT_POINTER(*tp, t);
+ rcu_assign_pointer(t->next, rtnl_dereference(*tp));
+ rcu_assign_pointer(*tp, t);
}
static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn)
@@ -393,7 +393,7 @@
p->addr = a->addr;
p->flags = a->flags;
t->prl_count++;
- RCU_INIT_POINTER(t->prl, p);
+ rcu_assign_pointer(t->prl, p);
out:
return err;
}
@@ -1177,7 +1177,7 @@
if (!dev->tstats)
return -ENOMEM;
dev_hold(dev);
- RCU_INIT_POINTER(sitn->tunnels_wc[0], tunnel);
+ rcu_assign_pointer(sitn->tunnels_wc[0], tunnel);
return 0;
}