Brandon Heller
bb697af959
This flag was added on March 3, 2008 to comply with a specific vendor's hardware limitations. This vendor is out of business, and with the assumption of a software datapath backup, it is unlikely that a switch would be unable to support sending to a physical port and the controller simultaneously. This commmit removes the corresponding spec text and replaces the capability bit with a reserved one. Thanks to Justin Pettit for the history.
115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/* Interface exported by OpenFlow module. */
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#ifndef DATAPATH_H
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#define DATAPATH_H 1
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#include <linux/kernel.h>
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#include <linux/mutex.h>
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#include <linux/netlink.h>
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#include <linux/netdevice.h>
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#include <linux/workqueue.h>
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#include <linux/skbuff.h>
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#include "openflow/openflow.h"
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#include "openflow/nicira-ext.h"
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#include "flow.h"
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#define NL_FLOWS_PER_MESSAGE 100
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/* Capabilities supported by this implementation. */
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#define OFP_SUPPORTED_CAPABILITIES ( OFPC_FLOW_STATS \
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| OFPC_TABLE_STATS \
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| OFPC_PORT_STATS )
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/* Actions supported by this implementation. */
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#define OFP_SUPPORTED_ACTIONS ( (1 << OFPAT_OUTPUT) \
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| (1 << OFPAT_SET_VLAN_VID) \
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| (1 << OFPAT_SET_VLAN_PCP) \
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| (1 << OFPAT_STRIP_VLAN) \
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| (1 << OFPAT_SET_DL_SRC) \
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| (1 << OFPAT_SET_DL_DST) \
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| (1 << OFPAT_SET_NW_SRC) \
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| (1 << OFPAT_SET_NW_DST) \
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| (1 << OFPAT_SET_TP_SRC) \
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| (1 << OFPAT_SET_TP_DST) )
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struct sk_buff;
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#define DP_MAX_PORTS 255
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struct datapath {
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int dp_idx;
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struct timer_list timer; /* Expiration timer. */
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struct sw_chain *chain; /* Forwarding rules. */
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struct task_struct *dp_task; /* Kernel thread for maintenance. */
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/* Data related to the "of" device of this datapath */
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struct net_device *netdev;
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char dp_desc[DESC_STR_LEN]; /* human readible comment to ID this DP */
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/* Configuration set from controller */
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uint16_t flags;
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uint16_t miss_send_len;
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struct kobject ifobj;
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/* Switch ports. */
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struct net_bridge_port *ports[DP_MAX_PORTS];
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struct net_bridge_port *local_port; /* OFPP_LOCAL port. */
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struct list_head port_list; /* All ports, including local_port. */
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};
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/* Information necessary to reply to the sender of an OpenFlow message. */
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struct sender {
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uint32_t xid; /* OpenFlow transaction ID of request. */
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uint32_t pid; /* Netlink process ID of sending socket. */
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uint32_t seq; /* Netlink sequence ID of request. */
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};
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struct net_bridge_port {
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u16 port_no;
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u32 config; /* Some subset of OFPPC_* flags. */
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u32 state; /* Some subset of OFPPS_* flags. */
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spinlock_t lock;
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struct datapath *dp;
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struct net_device *dev;
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struct kobject kobj;
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struct list_head node; /* Element in datapath.ports. */
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};
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extern struct mutex dp_mutex;
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extern struct notifier_block dp_device_notifier;
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extern int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
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extern int (*dp_add_dp_hook)(struct datapath *dp);
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extern int (*dp_del_dp_hook)(struct datapath *dp);
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extern int (*dp_add_if_hook)(struct net_bridge_port *p);
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extern int (*dp_del_if_hook)(struct net_bridge_port *p);
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int dp_del_switch_port(struct net_bridge_port *);
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int dp_xmit_skb(struct sk_buff *skb);
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int dp_output_port(struct datapath *, struct sk_buff *, int out_port,
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int ignore_no_fwd);
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int dp_output_control(struct datapath *, struct sk_buff *, size_t, int);
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void dp_set_origin(struct datapath *, uint16_t, struct sk_buff *);
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int dp_send_features_reply(struct datapath *, const struct sender *);
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int dp_send_config_reply(struct datapath *, const struct sender *);
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int dp_send_port_status(struct net_bridge_port *p, uint8_t status);
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int dp_send_flow_end(struct datapath *, struct sw_flow *,
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enum ofp_flow_removed_reason);
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int dp_send_error_msg(struct datapath *, const struct sender *,
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uint16_t, uint16_t, const void *, size_t);
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int dp_update_port_flags(struct datapath *dp, const struct ofp_port_mod *opm);
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int dp_send_echo_reply(struct datapath *, const struct sender *,
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const struct ofp_header *);
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int dp_send_hello(struct datapath *, const struct sender *,
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const struct ofp_header *);
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int dp_send_barrier_reply(struct datapath *, const struct sender *,
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const struct ofp_header *);
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/* Should hold at least RCU read lock when calling */
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struct datapath *dp_get_by_idx(int dp_idx);
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struct datapath *dp_get_by_name(const char *dp_name);
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#endif /* datapath.h */
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