datapath: Convert upcalls and ODP_EXECUTE to use AF_NETLINK socket layer.

[sliver-openvswitch.git] / datapath / vport-netdev.c

diff --git a/datapath/vport-netdev.c b/datapath/vport-netdev.c
index 33fe9a5..e45e22f 100644 (file)
--- a/datapath/vport-netdev.c
+++ b/datapath/vport-netdev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010 Nicira Networks.
+ * Copyright (c) 2010, 2011 Nicira Networks.
  * Distributed under the terms of the GNU GPL version 2.
  *
  * Significant portions of this file may be copied from parts of the Linux
@@ -16,12 +16,11 @@
 
 #include <net/llc.h>
 
+#include "checksum.h"
 #include "datapath.h"
 #include "vport-internal_dev.h"
 #include "vport-netdev.h"
 
-#include "compat.h"
-
 /* If the native device stats aren't 64 bit use the vport stats tracking instead. */
 #define USE_VPORT_STATS (sizeof(((struct net_device_stats *)0)->rx_bytes) < sizeof(u64))
 
@@ -94,7 +93,7 @@ static struct vport *netdev_create(const struct vport_parms *parms)
        struct netdev_vport *netdev_vport;
        int err;
 
-       vport = vport_alloc(sizeof(struct netdev_vport), &netdev_vport_ops);
+       vport = vport_alloc(sizeof(struct netdev_vport), &netdev_vport_ops, parms);
        if (IS_ERR(vport)) {
                err = PTR_ERR(vport);
                goto error;
@@ -125,6 +124,15 @@ static struct vport *netdev_create(const struct vport_parms *parms)
                        vport_set_stats(vport, &stats);
        }
 
+       err = netdev_rx_handler_register(netdev_vport->dev, netdev_frame_hook,
+                                        vport);
+       if (err)
+               goto error_put;
+
+       dev_set_promiscuity(netdev_vport->dev, 1);
+       dev_disable_lro(netdev_vport->dev);
+       netdev_vport->dev->priv_flags |= IFF_OVS_DATAPATH;
+
        return vport;
 
 error_put:
@@ -139,37 +147,15 @@ static int netdev_destroy(struct vport *vport)
 {
        struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
 
-       dev_put(netdev_vport->dev);
-       vport_free(vport);
-
-       return 0;
-}
-
-static int netdev_attach(struct vport *vport)
-{
-       struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-       int err;
-
-       err = netdev_rx_handler_register(netdev_vport->dev, netdev_frame_hook,
-                                        vport);
-       if (err)
-               return err;
-
-       dev_set_promiscuity(netdev_vport->dev, 1);
-       dev_disable_lro(netdev_vport->dev);
-       netdev_vport->dev->priv_flags |= IFF_OVS_DATAPATH;
-
-       return 0;
-}
-
-static int netdev_detach(struct vport *vport)
-{
-       struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
-
        netdev_vport->dev->priv_flags &= ~IFF_OVS_DATAPATH;
        netdev_rx_handler_unregister(netdev_vport->dev);
        dev_set_promiscuity(netdev_vport->dev, -1);
 
+       synchronize_rcu();
+
+       dev_put(netdev_vport->dev);
+       vport_free(vport);
+
        return 0;
 }
 
@@ -285,30 +271,28 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 /* Returns null if this device is not attached to a datapath. */
 struct vport *netdev_get_vport(struct net_device *dev)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
-       /* XXX: The bridge code may have registered the data.
-        * So check that the handler pointer is the datapath's.
-        * Once the merge is done and IFF_OVS_DATAPATH stops
-        * being the same value as IFF_BRIDGE_PORT the check can
-        * simply be netdev_vport->dev->priv_flags & IFF_OVS_DATAPATH. */
-       if (rcu_dereference(dev->rx_handler) != netdev_frame_hook)
+#ifdef IFF_BRIDGE_PORT
+#if IFF_BRIDGE_PORT != IFF_OVS_DATAPATH
+       if (likely(dev->priv_flags & IFF_OVS_DATAPATH))
+#else
+       if (likely(rcu_access_pointer(dev->rx_handler) == netdev_frame_hook))   
+#endif
+               return (struct vport *)rcu_dereference_rtnl(dev->rx_handler_data);
+       else
                return NULL;
-       return (struct vport *)rcu_dereference(dev->rx_handler_data);
 #else
-       return (struct vport *)rcu_dereference(dev->br_port);
+       return (struct vport *)rcu_dereference_rtnl(dev->br_port);
 #endif
 }
 
 const struct vport_ops netdev_vport_ops = {
-       .type           = "netdev",
+       .type           = ODP_VPORT_TYPE_NETDEV,
        .flags          = (VPORT_F_REQUIRED |
                          (USE_VPORT_STATS ? VPORT_F_GEN_STATS : 0)),
        .init           = netdev_init,
        .exit           = netdev_exit,
        .create         = netdev_create,
        .destroy        = netdev_destroy,
-       .attach         = netdev_attach,
-       .detach         = netdev_detach,
        .set_mtu        = netdev_set_mtu,
        .set_addr       = netdev_set_addr,
        .get_name       = netdev_get_name,