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, 65 insertions, 89 deletions

diff --git a/kernel/net/openvswitch/vport-netdev.c b/kernel/net/openvswitch/vport-netdev.c
index 33e6d6e29..6b0190b98 100644
--- a/kernel/net/openvswitch/vport-netdev.c
+++ b/kernel/net/openvswitch/vport-netdev.c
@@ -26,18 +26,24 @@
 #include <linux/rtnetlink.h>
 #include <linux/skbuff.h>
 #include <linux/openvswitch.h>
+#include <linux/export.h>
 
-#include <net/llc.h>
+#include <net/ip_tunnels.h>
+#include <net/rtnetlink.h>
 
 #include "datapath.h"
+#include "vport.h"
 #include "vport-internal_dev.h"
 #include "vport-netdev.h"
 
 static struct vport_ops ovs_netdev_vport_ops;
 
 /* Must be called with rcu_read_lock. */
-static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
+static void netdev_port_receive(struct sk_buff *skb)
 {
+	struct vport *vport;
+
+	vport = ovs_netdev_get_vport(skb->dev);
 	if (unlikely(!vport))
 		goto error;
 
@@ -53,10 +59,8 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
 
 	skb_push(skb, ETH_HLEN);
 	ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN);
-
-	ovs_vport_receive(vport, skb, NULL);
+	ovs_vport_receive(vport, skb, skb_tunnel_info(skb));
 	return;
-
 error:
 	kfree_skb(skb);
 }
@@ -65,15 +69,11 @@ error:
 static rx_handler_result_t netdev_frame_hook(struct sk_buff **pskb)
 {
 	struct sk_buff *skb = *pskb;
-	struct vport *vport;
 
 	if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
 		return RX_HANDLER_PASS;
 
-	vport = ovs_netdev_get_vport(skb->dev);
-
-	netdev_port_receive(vport, skb);
-
+	netdev_port_receive(skb);
 	return RX_HANDLER_CONSUMED;
 }
 
@@ -83,139 +83,116 @@ static struct net_device *get_dpdev(const struct datapath *dp)
 
 	local = ovs_vport_ovsl(dp, OVSP_LOCAL);
 	BUG_ON(!local);
-	return netdev_vport_priv(local)->dev;
+	return local->dev;
 }
 
-static struct vport *netdev_create(const struct vport_parms *parms)
+struct vport *ovs_netdev_link(struct vport *vport, const char *name)
 {
-	struct vport *vport;
-	struct netdev_vport *netdev_vport;
 	int err;
 
-	vport = ovs_vport_alloc(sizeof(struct netdev_vport),
-				&ovs_netdev_vport_ops, parms);
-	if (IS_ERR(vport)) {
-		err = PTR_ERR(vport);
-		goto error;
-	}
-
-	netdev_vport = netdev_vport_priv(vport);
-
-	netdev_vport->dev = dev_get_by_name(ovs_dp_get_net(vport->dp), parms->name);
-	if (!netdev_vport->dev) {
+	vport->dev = dev_get_by_name(ovs_dp_get_net(vport->dp), name);
+	if (!vport->dev) {
 		err = -ENODEV;
 		goto error_free_vport;
 	}
 
-	if (netdev_vport->dev->flags & IFF_LOOPBACK ||
-	    netdev_vport->dev->type != ARPHRD_ETHER ||
-	    ovs_is_internal_dev(netdev_vport->dev)) {
+	if (vport->dev->flags & IFF_LOOPBACK ||
+	    vport->dev->type != ARPHRD_ETHER ||
+	    ovs_is_internal_dev(vport->dev)) {
 		err = -EINVAL;
 		goto error_put;
 	}
 
 	rtnl_lock();
-	err = netdev_master_upper_dev_link(netdev_vport->dev,
+	err = netdev_master_upper_dev_link(vport->dev,
 					   get_dpdev(vport->dp));
 	if (err)
 		goto error_unlock;
 
-	err = netdev_rx_handler_register(netdev_vport->dev, netdev_frame_hook,
+	err = netdev_rx_handler_register(vport->dev, netdev_frame_hook,
 					 vport);
 	if (err)
 		goto error_master_upper_dev_unlink;
 
-	dev_disable_lro(netdev_vport->dev);
-	dev_set_promiscuity(netdev_vport->dev, 1);
-	netdev_vport->dev->priv_flags |= IFF_OVS_DATAPATH;
+	dev_disable_lro(vport->dev);
+	dev_set_promiscuity(vport->dev, 1);
+	vport->dev->priv_flags |= IFF_OVS_DATAPATH;
 	rtnl_unlock();
 
 	return vport;
 
 error_master_upper_dev_unlink:
-	netdev_upper_dev_unlink(netdev_vport->dev, get_dpdev(vport->dp));
+	netdev_upper_dev_unlink(vport->dev, get_dpdev(vport->dp));
 error_unlock:
 	rtnl_unlock();
 error_put:
-	dev_put(netdev_vport->dev);
+	dev_put(vport->dev);
 error_free_vport:
 	ovs_vport_free(vport);
-error:
 	return ERR_PTR(err);
 }
+EXPORT_SYMBOL_GPL(ovs_netdev_link);
 
-static void free_port_rcu(struct rcu_head *rcu)
+static struct vport *netdev_create(const struct vport_parms *parms)
 {
-	struct netdev_vport *netdev_vport = container_of(rcu,
-					struct netdev_vport, rcu);
+	struct vport *vport;
+
+	vport = ovs_vport_alloc(0, &ovs_netdev_vport_ops, parms);
+	if (IS_ERR(vport))
+		return vport;
 
-	dev_put(netdev_vport->dev);
-	ovs_vport_free(vport_from_priv(netdev_vport));
+	return ovs_netdev_link(vport, parms->name);
 }
 
-void ovs_netdev_detach_dev(struct vport *vport)
+static void vport_netdev_free(struct rcu_head *rcu)
 {
-	struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
+	struct vport *vport = container_of(rcu, struct vport, rcu);
 
+	if (vport->dev)
+		dev_put(vport->dev);
+	ovs_vport_free(vport);
+}
+
+void ovs_netdev_detach_dev(struct vport *vport)
+{
 	ASSERT_RTNL();
-	netdev_vport->dev->priv_flags &= ~IFF_OVS_DATAPATH;
-	netdev_rx_handler_unregister(netdev_vport->dev);
-	netdev_upper_dev_unlink(netdev_vport->dev,
-				netdev_master_upper_dev_get(netdev_vport->dev));
-	dev_set_promiscuity(netdev_vport->dev, -1);
+	vport->dev->priv_flags &= ~IFF_OVS_DATAPATH;
+	netdev_rx_handler_unregister(vport->dev);
+	netdev_upper_dev_unlink(vport->dev,
+				netdev_master_upper_dev_get(vport->dev));
+	dev_set_promiscuity(vport->dev, -1);
 }
+EXPORT_SYMBOL_GPL(ovs_netdev_detach_dev);
 
 static void netdev_destroy(struct vport *vport)
 {
-	struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-
 	rtnl_lock();
-	if (netdev_vport->dev->priv_flags & IFF_OVS_DATAPATH)
+	if (vport->dev->priv_flags & IFF_OVS_DATAPATH)
 		ovs_netdev_detach_dev(vport);
 	rtnl_unlock();
 
-	call_rcu(&netdev_vport->rcu, free_port_rcu);
-}
-
-const char *ovs_netdev_get_name(const struct vport *vport)
-{
-	const struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-	return netdev_vport->dev->name;
-}
-
-static unsigned int packet_length(const struct sk_buff *skb)
-{
-	unsigned int length = skb->len - ETH_HLEN;
-
-	if (skb->protocol == htons(ETH_P_8021Q))
-		length -= VLAN_HLEN;
-
-	return length;
+	call_rcu(&vport->rcu, vport_netdev_free);
 }
 
-static int netdev_send(struct vport *vport, struct sk_buff *skb)
+void ovs_netdev_tunnel_destroy(struct vport *vport)
 {
-	struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-	int mtu = netdev_vport->dev->mtu;
-	int len;
-
-	if (unlikely(packet_length(skb) > mtu && !skb_is_gso(skb))) {
-		net_warn_ratelimited("%s: dropped over-mtu packet: %d > %d\n",
-				     netdev_vport->dev->name,
-				     packet_length(skb), mtu);
-		goto drop;
-	}
-
-	skb->dev = netdev_vport->dev;
-	len = skb->len;
-	dev_queue_xmit(skb);
+	rtnl_lock();
+	if (vport->dev->priv_flags & IFF_OVS_DATAPATH)
+		ovs_netdev_detach_dev(vport);
 
-	return len;
+	/* We can be invoked by both explicit vport deletion and
+	 * underlying netdev deregistration; delete the link only
+	 * if it's not already shutting down.
+	 */
+	if (vport->dev->reg_state == NETREG_REGISTERED)
+		rtnl_delete_link(vport->dev);
+	dev_put(vport->dev);
+	vport->dev = NULL;
+	rtnl_unlock();
 
-drop:
-	kfree_skb(skb);
-	return 0;
+	call_rcu(&vport->rcu, vport_netdev_free);
 }
+EXPORT_SYMBOL_GPL(ovs_netdev_tunnel_destroy);
 
 /* Returns null if this device is not attached to a datapath. */
 struct vport *ovs_netdev_get_vport(struct net_device *dev)
@@ -231,8 +208,7 @@ static struct vport_ops ovs_netdev_vport_ops = {
 	.type		= OVS_VPORT_TYPE_NETDEV,
 	.create		= netdev_create,
 	.destroy	= netdev_destroy,
-	.get_name	= ovs_netdev_get_name,
-	.send		= netdev_send,
+	.send		= dev_queue_xmit,
 };
 
 int __init ovs_netdev_init(void)