Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...

[karo-tx-linux.git] / net / openvswitch / datapath.h

diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index c1105c147531001b65e8cdf75b0ccab2558bae0e..031dfbf37c937dff57657d33d45143d454cc4e46 100644 (file)
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -27,10 +27,11 @@
 #include <linux/u64_stats_sync.h>
 
 #include "flow.h"
+#include "vport.h"
 
-struct vport;
+#define DP_MAX_PORTS           USHRT_MAX
+#define DP_VPORT_HASH_BUCKETS  1024
 
-#define DP_MAX_PORTS 1024
 #define SAMPLE_ACTION_DEPTH 3
 
 /**
@@ -58,11 +59,10 @@ struct dp_stats_percpu {
  * @list_node: Element in global 'dps' list.
  * @n_flows: Number of flows currently in flow table.
  * @table: Current flow table.  Protected by genl_lock and RCU.
- * @ports: Map from port number to &struct vport.  %OVSP_LOCAL port
- * always exists, other ports may be %NULL.  Protected by RTNL and RCU.
- * @port_list: List of all ports in @ports in arbitrary order.  RTNL required
- * to iterate or modify.
+ * @ports: Hash table for ports.  %OVSP_LOCAL port always exists.  Protected by
+ * RTNL and RCU.
  * @stats_percpu: Per-CPU datapath statistics.
+ * @net: Reference to net namespace.
  *
  * Context: See the comment on locking at the top of datapath.c for additional
  * locking information.
@@ -75,13 +75,37 @@ struct datapath {
        struct flow_table __rcu *table;
 
        /* Switch ports. */
-       struct vport __rcu *ports[DP_MAX_PORTS];
-       struct list_head port_list;
+       struct hlist_head *ports;
 
        /* Stats. */
        struct dp_stats_percpu __percpu *stats_percpu;
+
+#ifdef CONFIG_NET_NS
+       /* Network namespace ref. */
+       struct net *net;
+#endif
 };
 
+struct vport *ovs_lookup_vport(const struct datapath *dp, u16 port_no);
+
+static inline struct vport *ovs_vport_rcu(const struct datapath *dp, int port_no)
+{
+       WARN_ON_ONCE(!rcu_read_lock_held());
+       return ovs_lookup_vport(dp, port_no);
+}
+
+static inline struct vport *ovs_vport_rtnl_rcu(const struct datapath *dp, int port_no)
+{
+       WARN_ON_ONCE(!rcu_read_lock_held() && !rtnl_is_locked());
+       return ovs_lookup_vport(dp, port_no);
+}
+
+static inline struct vport *ovs_vport_rtnl(const struct datapath *dp, int port_no)
+{
+       ASSERT_RTNL();
+       return ovs_lookup_vport(dp, port_no);
+}
+
 /**
  * struct ovs_skb_cb - OVS data in skb CB
  * @flow: The flow associated with this packet.  May be %NULL if no flow.
@@ -105,9 +129,19 @@ struct dp_upcall_info {
        u8 cmd;
        const struct sw_flow_key *key;
        const struct nlattr *userdata;
-       u32 pid;
+       u32 portid;
 };
 
+static inline struct net *ovs_dp_get_net(struct datapath *dp)
+{
+       return read_pnet(&dp->net);
+}
+
+static inline void ovs_dp_set_net(struct datapath *dp, struct net *net)
+{
+       write_pnet(&dp->net, net);
+}
+
 extern struct notifier_block ovs_dp_device_notifier;
 extern struct genl_multicast_group ovs_dp_vport_multicast_group;