1 files changed, 139 insertions, 0 deletions
diff --git a/datapath/datapath.h b/datapath/datapath.h
new file mode 100644
index 000000000..102b27f31
--- /dev/null
+++ b/datapath/datapath.h
@@ -0,0 +1,139 @@
+/* Interface exported by openvswitch_mod. */
+
+#ifndef DATAPATH_H
+#define DATAPATH_H 1
+
+#include <asm/page.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/netlink.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include "flow.h"
+#include "brc_sysfs.h"
+
+struct sk_buff;
+
+/* Mask for the priority bits in a vlan header.  If we ever merge upstream
+ * then this should go into include/linux/if_vlan.h. */
+#define VLAN_PCP_MASK 0xe000
+
+#define DP_MAX_PORTS 256
+#define DP_MAX_GROUPS 16
+
+#define DP_L2_BITS (PAGE_SHIFT - ilog2(sizeof(struct sw_flow*)))
+#define DP_L2_SIZE (1 << DP_L2_BITS)
+#define DP_L2_SHIFT 0
+
+#define DP_L1_BITS (PAGE_SHIFT - ilog2(sizeof(struct sw_flow**)))
+#define DP_L1_SIZE (1 << DP_L1_BITS)
+#define DP_L1_SHIFT DP_L2_BITS
+
+#define DP_MAX_BUCKETS (DP_L1_SIZE * DP_L2_SIZE)
+
+struct dp_table {
+	unsigned int n_buckets;
+	struct sw_flow ***flows[2];
+	struct rcu_head rcu;
+};
+
+#define DP_N_QUEUES 2
+#define DP_MAX_QUEUE_LEN 100
+
+struct dp_stats_percpu {
+	u64 n_frags;
+	u64 n_hit;
+	u64 n_missed;
+	u64 n_lost;
+};
+
+struct dp_port_group {
+	struct rcu_head rcu;
+	int n_ports;
+	u16 ports[];
+};
+
+struct datapath {
+	struct mutex mutex;
+	int dp_idx;
+
+#ifdef SUPPORT_SYSFS
+	struct kobject ifobj;
+#endif
+
+	int drop_frags;
+
+	/* Queued data. */
+	struct sk_buff_head queues[DP_N_QUEUES];
+	wait_queue_head_t waitqueue;
+
+	/* Flow table. */
+	unsigned int n_flows;
+	struct dp_table *table;
+
+	/* Port groups. */
+	struct dp_port_group *groups[DP_MAX_GROUPS];
+
+	/* Switch ports. */
+	unsigned int n_ports;
+	struct net_bridge_port *ports[DP_MAX_PORTS];
+	struct list_head port_list; /* All ports, including local_port. */
+
+	/* Stats. */
+	struct dp_stats_percpu *stats_percpu;
+};
+
+struct net_bridge_port {
+	u16 port_no;
+	struct datapath	*dp;
+	struct net_device *dev;
+#ifdef SUPPORT_SYSFS
+	struct kobject kobj;
+#endif
+	struct list_head node;   /* Element in datapath.ports. */
+};
+
+extern struct notifier_block dp_device_notifier;
+extern int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
+extern int (*dp_add_dp_hook)(struct datapath *dp);
+extern int (*dp_del_dp_hook)(struct datapath *dp);
+extern int (*dp_add_if_hook)(struct net_bridge_port *p);
+extern int (*dp_del_if_hook)(struct net_bridge_port *p);
+
+/* Flow table. */
+struct dp_table *dp_table_create(unsigned int n_buckets);
+void dp_table_destroy(struct dp_table *, int free_flows);
+struct sw_flow *dp_table_lookup(struct dp_table *, const struct odp_flow_key *);
+struct sw_flow **dp_table_lookup_for_insert(struct dp_table *, const struct odp_flow_key *);
+int dp_table_delete(struct dp_table *, struct sw_flow *);
+int dp_table_expand(struct datapath *);
+int dp_table_flush(struct datapath *);
+int dp_table_foreach(struct dp_table *table,
+		     int (*callback)(struct sw_flow *flow, void *aux),
+		     void *aux);
+
+void dp_process_received_packet(struct sk_buff *, struct net_bridge_port *);
+int dp_del_port(struct net_bridge_port *, struct list_head *);
+int dp_output_port(struct datapath *, struct sk_buff *, int out_port,
+		   int ignore_no_fwd);
+int dp_output_control(struct datapath *, struct sk_buff *, int, u32 arg);
+void dp_set_origin(struct datapath *, u16, struct sk_buff *);
+
+struct datapath *get_dp(int dp_idx);
+
+static inline const char *dp_name(const struct datapath *dp)
+{
+	return dp->ports[ODPP_LOCAL]->dev->name;
+}
+
+#ifdef CONFIG_XEN
+int skb_checksum_setup(struct sk_buff *skb);
+#else
+static inline int skb_checksum_setup(struct sk_buff *skb)
+{
+	return 0;
+}
+#endif
+
+#endif /* datapath.h */