Tatsuya Yabe
6778bd8cdf
Set of modifications and additions to establish a platform for implementing a hardware table in userspace. Modules in skeleton directory is used as a template for creating hardware dependent libraries.
112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
#ifndef SAMPLE_PLATFORM_HW_FLOW_H
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#define SAMPLE_PLATFORM_HW_FLOW_H 1
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/*
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* Hardware Flow operations: The glue between software flows and
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* actual hardware table entries.
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*/
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#include <openflow/openflow.h>
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#include <of_hw_api.h>
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#include "of_hw_platform.h"
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/* DEBUG for HW flow lists */
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#define HW_FLOW_MAGIC 0xba5eba11
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#define HW_FLOW_MAKE_VALID(hf) (hf)->magic = HW_FLOW_MAGIC
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#define HW_FLOW_IS_VALID(hf) \
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(((hf) != NULL) && ((hf)->magic == HW_FLOW_MAGIC))
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/* Some flows require multiple HW entries */
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#define HW_FLOWS_PER_FLOW_MAX (2)
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/* The glue between SW flows and HW entries */
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typedef struct hw_flow {
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struct sw_flow *flow; /* Corresponding SW flow */
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of_hw_driver_t *hw_drv; /* DP for this flow; MAY BE NULL for internal */
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int entry_count; /* SW flow may require multiple HW table entries */
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entry_control_t *entry_list[HW_FLOWS_PER_FLOW_MAX];
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uint32 hw_packet_count;
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uint32 hw_byte_count;
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uint32 magic; /* DEBUG */
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} hw_flow_t;
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/* Extra info needed by hardware about flow entry;
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* determined during supported check; all in host order
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*
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* For smac, dmac, vid and priority, if these are changed at ingress
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* and a remote rule is necessary, the remote rule must have the
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* rewrite values to match. This is indicated if value is not -1.
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*/
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typedef struct hw_flow_extra_s {
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int source_port; /* If single source port, what is it */
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int dest_port; /* If one dest port, what is it */
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/* If multi dest ports, one pbmp per device */
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FIXME dports;
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int dest_count; /* Drop (0), unicast (1), multicast (>1) */
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uint32 local_reason; /* Why forwarded to CPU */
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int cosq; /* For enqueue action */
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} hw_flow_extra_t;
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/* Driver functions */
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extern int of_hw_flow_install(struct sw_table *flowtab, struct sw_flow *flow);
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extern int of_hw_flow_modify(struct sw_table *flowtab,
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const struct sw_flow_key *key, uint16_t priority, int strict,
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const struct ofp_action_header *actions, size_t actions_len);
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extern int of_hw_flow_delete(struct datapath *dp, struct sw_table *flowtab,
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const struct sw_flow_key *key, uint16_t out_port,
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uint16_t priority, int strict);
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extern void of_hw_flow_timeout(struct sw_table *flowtab,
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struct list *deleted);
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extern struct sw_flow *of_hw_flow_lookup(struct sw_table *flowtab,
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const struct sw_flow_key *key);
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extern int of_hw_sw_flow_stat_update(struct sw_flow *flow, int *used,
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int force_sync);
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extern int of_hw_flow_stats_get(of_hw_driver_t *hw_drv, struct ofp_match,
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struct ofp_flow_stats **stats, int *count);
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extern int of_hw_aggregate_stats_get(struct ofp_match,
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struct ofp_aggregate_stats_reply *stats);
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/* Controls a single FP (HW table flow) entry */
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struct entry_control_s {
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/* These must be persistent; update fp_entry_remove if you change this */
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int index; /* This entry-s index in field_control list */
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int in_use;
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hw_flow_t *hw_flow;
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/*
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* HW specific info
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*/
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FIXME;
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unsigned long int used_check; /* Last counter; for checking if used */
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unsigned long int last_counter; /* pkts or bytes, see stat_sel above */
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unsigned long int counter_last_check; /* Track entry usage by cntr */
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unsigned long int total_counter; /* FIXME: u64? */
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};
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/* Driver associated with a HW entry */
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#define HW_ENTRY_DRIVER(ent) ((ent)->hw_flow->hw_drv)
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/* FP control structure */
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struct field_control_s {
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/* HW Specific info */
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FIXME;
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int entry_count; /* How many entries in use */
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entry_control_t entry_list[FIELD_ENTRY_MAX]; /* Instantiation of entries */
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};
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/* FIXME: Do we need reference counts on stat objects? */
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extern int of_hw_fp_setup(void);
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extern int of_hw_table_stats_update(of_hw_driver_int_t *hw_drv,
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unsigned long *matched, unsigned long *missed);
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extern void of_hw_flow_remove_all(of_hw_driver_int_t *hw_int);
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#endif /* SAMPLE_PLATFORM_HW_FLOW_H */
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