Ben Pfaff
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/* Interface exported by OpenFlow module. */
|
|
|
|
#ifndef DATAPATH_H
|
|
#define DATAPATH_H 1
|
|
|
|
#include <linux/mutex.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/skbuff.h>
|
|
#include "openflow.h"
|
|
#include "flow.h"
|
|
|
|
|
|
#define NL_FLOWS_PER_MESSAGE 100
|
|
|
|
#ifdef NDEBUG
|
|
#define dprintk(x...)
|
|
#else
|
|
#define dprintk(x...) printk(x)
|
|
#endif
|
|
|
|
/* Capabilities supported by this implementation. */
|
|
#define OFP_SUPPORTED_CAPABILITIES ( OFPC_FLOW_STATS \
|
|
| OFPC_TABLE_STATS \
|
|
| OFPC_PORT_STATS \
|
|
| OFPC_STP \
|
|
| OFPC_MULTI_PHY_TX )
|
|
|
|
/* Actions supported by this implementation. */
|
|
#define OFP_SUPPORTED_ACTIONS ( (1 << OFPAT_OUTPUT) \
|
|
| (1 << OFPAT_SET_DL_VLAN) \
|
|
| (1 << OFPAT_SET_DL_SRC) \
|
|
| (1 << OFPAT_SET_DL_DST) \
|
|
| (1 << OFPAT_SET_NW_SRC) \
|
|
| (1 << OFPAT_SET_NW_DST) \
|
|
| (1 << OFPAT_SET_TP_SRC) \
|
|
| (1 << OFPAT_SET_TP_DST) )
|
|
|
|
struct sk_buff;
|
|
|
|
struct datapath {
|
|
int dp_idx;
|
|
|
|
/* Unique identifier for this datapath, incorporates the dp_idx and
|
|
* a hardware address */
|
|
uint64_t id;
|
|
|
|
struct timer_list timer; /* Expiration timer. */
|
|
struct sw_chain *chain; /* Forwarding rules. */
|
|
struct task_struct *dp_task; /* Kernel thread for maintenance. */
|
|
|
|
/* Data related to the "of" device of this datapath */
|
|
struct net_device *netdev;
|
|
|
|
/* Configuration set from controller */
|
|
uint16_t flags;
|
|
uint16_t miss_send_len;
|
|
|
|
/* Switch ports. */
|
|
struct net_bridge_port *ports[OFPP_MAX];
|
|
struct net_bridge_port *local_port; /* OFPP_LOCAL port. */
|
|
struct list_head port_list; /* All ports, including local_port. */
|
|
};
|
|
|
|
/* Information necessary to reply to the sender of an OpenFlow message. */
|
|
struct sender {
|
|
uint32_t xid; /* OpenFlow transaction ID of request. */
|
|
uint32_t pid; /* Netlink process ID of sending socket. */
|
|
uint32_t seq; /* Netlink sequence ID of request. */
|
|
};
|
|
|
|
#define PORT_STATUS_BITS (OFPPFL_PORT_DOWN | OFPPFL_LINK_DOWN)
|
|
#define PORT_FLAG_BITS (~PORT_STATUS_BITS)
|
|
|
|
struct net_bridge_port {
|
|
u16 port_no;
|
|
u32 flags; /* Some subset of PORT_FLAG_BITS. */
|
|
u32 status; /* Some subset of PORT_STATUS_BITS. */
|
|
spinlock_t lock;
|
|
struct work_struct port_task;
|
|
struct datapath *dp;
|
|
struct net_device *dev;
|
|
struct list_head node; /* Element in datapath.ports. */
|
|
};
|
|
|
|
extern struct mutex dp_mutex;
|
|
|
|
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 *, uint32_t,
|
|
size_t, int);
|
|
int dp_set_origin(struct datapath *, uint16_t, struct sk_buff *);
|
|
int dp_send_features_reply(struct datapath *, const struct sender *);
|
|
int dp_send_config_reply(struct datapath *, const struct sender *);
|
|
int dp_send_flow_expired(struct datapath *, struct sw_flow *,
|
|
enum ofp_flow_expired_reason);
|
|
int dp_send_error_msg(struct datapath *, const struct sender *,
|
|
uint16_t, uint16_t, const uint8_t *, size_t);
|
|
int dp_update_port_flags(struct datapath *dp, const struct ofp_port_mod *opm);
|
|
int dp_send_echo_reply(struct datapath *, const struct sender *,
|
|
const struct ofp_header *);
|
|
|
|
/* Should hold at least RCU read lock when calling */
|
|
struct datapath *dp_get(int dp_idx);
|
|
|
|
#endif /* datapath.h */
|