1 /* Interface exported by OpenFlow module. */
6 #include <linux/mutex.h>
7 #include <linux/netlink.h>
8 #include <linux/netdevice.h>
9 #include <linux/workqueue.h>
10 #include <linux/skbuff.h>
15 #define NL_FLOWS_PER_MESSAGE 100
20 #define dprintk(x...) printk(x)
23 /* Capabilities supported by this implementation. */
24 #define OFP_SUPPORTED_CAPABILITIES ( OFPC_FLOW_STATS \
30 /* Actions supported by this implementation. */
31 #define OFP_SUPPORTED_ACTIONS ( (1 << OFPAT_OUTPUT) \
32 | (1 << OFPAT_SET_DL_VLAN) \
33 | (1 << OFPAT_SET_DL_SRC) \
34 | (1 << OFPAT_SET_DL_DST) \
35 | (1 << OFPAT_SET_NW_SRC) \
36 | (1 << OFPAT_SET_NW_DST) \
37 | (1 << OFPAT_SET_TP_SRC) \
38 | (1 << OFPAT_SET_TP_DST) )
45 /* Unique identifier for this datapath, incorporates the dp_idx and
46 * a hardware address */
49 struct timer_list timer; /* Expiration timer. */
50 struct sw_chain *chain; /* Forwarding rules. */
51 struct task_struct *dp_task; /* Kernel thread for maintenance. */
53 /* Data related to the "of" device of this datapath */
54 struct net_device *netdev;
56 /* Configuration set from controller */
58 uint16_t miss_send_len;
61 struct net_bridge_port *ports[OFPP_MAX];
62 struct net_bridge_port *local_port; /* OFPP_LOCAL port. */
63 struct list_head port_list; /* All ports, including local_port. */
66 /* Information necessary to reply to the sender of an OpenFlow message. */
68 uint32_t xid; /* OpenFlow transaction ID of request. */
69 uint32_t pid; /* Netlink process ID of sending socket. */
70 uint32_t seq; /* Netlink sequence ID of request. */
73 #define PORT_STATUS_BITS (OFPPFL_PORT_DOWN | OFPPFL_LINK_DOWN)
74 #define PORT_FLAG_BITS (~PORT_STATUS_BITS)
76 struct net_bridge_port {
78 u32 flags; /* Some subset of PORT_FLAG_BITS. */
79 u32 status; /* Some subset of PORT_STATUS_BITS. */
81 struct work_struct port_task;
83 struct net_device *dev;
84 struct list_head node; /* Element in datapath.ports. */
87 extern struct mutex dp_mutex;
89 int dp_output_port(struct datapath *, struct sk_buff *, int out_port,
91 int dp_output_control(struct datapath *, struct sk_buff *, uint32_t,
93 int dp_set_origin(struct datapath *, uint16_t, struct sk_buff *);
94 int dp_send_features_reply(struct datapath *, const struct sender *);
95 int dp_send_config_reply(struct datapath *, const struct sender *);
96 int dp_send_flow_expired(struct datapath *, struct sw_flow *,
97 enum ofp_flow_expired_reason);
98 int dp_send_error_msg(struct datapath *, const struct sender *,
99 uint16_t, uint16_t, const void *, size_t);
100 int dp_update_port_flags(struct datapath *dp, const struct ofp_port_mod *opm);
101 int dp_send_echo_reply(struct datapath *, const struct sender *,
102 const struct ofp_header *);
104 /* Should hold at least RCU read lock when calling */
105 struct datapath *dp_get(int dp_idx);
107 #endif /* datapath.h */