These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 19 insertions, 6 deletions

diff --git a/kernel/include/net/netfilter/nf_conntrack_timeout.h b/kernel/include/net/netfilter/nf_conntrack_timeout.h
index 62308713d..f72be3886 100644
--- a/kernel/include/net/netfilter/nf_conntrack_timeout.h
+++ b/kernel/include/net/netfilter/nf_conntrack_timeout.h
@@ -20,10 +20,20 @@ struct ctnl_timeout {
 };
 
 struct nf_conn_timeout {
-	struct ctnl_timeout	*timeout;
+	struct ctnl_timeout __rcu *timeout;
 };
 
-#define NF_CT_TIMEOUT_EXT_DATA(__t) (unsigned int *) &((__t)->timeout->data)
+static inline unsigned int *
+nf_ct_timeout_data(struct nf_conn_timeout *t)
+{
+	struct ctnl_timeout *timeout;
+
+	timeout = rcu_dereference(t->timeout);
+	if (timeout == NULL)
+		return NULL;
+
+	return (unsigned int *)timeout->data;
+}
 
 static inline
 struct nf_conn_timeout *nf_ct_timeout_find(const struct nf_conn *ct)
@@ -47,7 +57,7 @@ struct nf_conn_timeout *nf_ct_timeout_ext_add(struct nf_conn *ct,
 	if (timeout_ext == NULL)
 		return NULL;
 
-	timeout_ext->timeout = timeout;
+	rcu_assign_pointer(timeout_ext->timeout, timeout);
 
 	return timeout_ext;
 #else
@@ -64,10 +74,13 @@ nf_ct_timeout_lookup(struct net *net, struct nf_conn *ct,
 	unsigned int *timeouts;
 
 	timeout_ext = nf_ct_timeout_find(ct);
-	if (timeout_ext)
-		timeouts = NF_CT_TIMEOUT_EXT_DATA(timeout_ext);
-	else
+	if (timeout_ext) {
+		timeouts = nf_ct_timeout_data(timeout_ext);
+		if (unlikely(!timeouts))
+			timeouts = l4proto->get_timeouts(net);
+	} else {
 		timeouts = l4proto->get_timeouts(net);
+	}
 
 	return timeouts;
 #else