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.
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
#ifndef OF_HW_DRV_H
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#define OF_HW_DRV_H 1
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#include <of_hw_api.h>
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#include "of_hw_platform.h"
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#include "list.h"
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/****************************************************************
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*
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* High Level Design Notes
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*
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* Hardware tables are managed field_control_t and entry_control_t
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* structures in hw_flow.h; these roughly mirror the HW structure
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* and are preallocated.
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*
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* The glue between these and SW flows are provided by the HW flow
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* objects (also in hw_flow.h) which are dynamically allocated and
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* logically extend the SW flow object.
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*
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* A linear table of HW flow objects is maintained, mostly drawn
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* from the existing table-linear.c implementation in udatapath.
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*
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*/
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/****************************************************************
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* Hardware independent port mapping macros
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****************************************************************/
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/* Map ports using software data structures and DP check; independent of HW */
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#define OF_PORT_IN_DP(_hwdrv, _i) (((_i) < OF_HW_MAX_PORT) && \
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(of_hw_ports[_i].owner == (of_hw_driver_t *)(_hwdrv)))
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#define OF_PORT_TO_HW_PORT(_hwdrv, _i) \
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(OF_PORT_IN_DP(_hwdrv, _i) ? of_hw_ports[_i].port : -1)
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/* TBD: Define flow tracking objects */
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/****************************************************************
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*
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* Hardware datapath internal control structure
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* Extends generic hardware datapath structure
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* (which currently extends software table structure)
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*
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****************************************************************/
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/* Counts the number of instances */
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extern int of_hw_drv_instances;
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typedef struct of_hw_driver_int {
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of_hw_driver_t hw_driver;
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struct datapath *dp; /* Owning datapath */
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/* Maintain a linked list of flows for tracking */
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struct list flows; /* The main list */
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struct list iter_flows; /* For iteration operation */
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unsigned long int next_serial;
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/* Callback function for received packets. */
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of_packet_in_f rx_handler;
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void *rx_cookie;
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/* Callback function for port change notification */
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of_port_change_f port_change;
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void *port_change_cookie;
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/* Lock object? */
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// struct list sw_flows;
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// struct list iter_sw_flows;
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// struct sw_flow *iter_state; /* Place tracker for interrupted iterations */
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/* Stats */
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uint32_t n_flows; /* Current number of flows in table */
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uint32_t n_inserts; /* Total inserts */
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uint32_t rx_pkt_alloc_failures;
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uint32_t insert_errors;
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/* Configuration */
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/* Port bitmap of ports in DP by device */
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FIXME port_bitmap;
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FIXME flood_bitmap;
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int stat_sel; /* Packets or bytes */
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int dp_idx; /* In HW dp, but not SW dp */
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int table_debug_level;
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int port_debug_level;
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} of_hw_driver_int_t;
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/* HW_DRV_MUTEX object ? */
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#define HW_DRV_MUTEX_INIT /* TBD */
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#define HW_DRV_LOCK /* TBD */
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#define HW_DRV_UNLOCK /* TBD */
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#define HW_INT(hw_drv) ((of_hw_driver_int_t *)hw_drv)
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#endif /* OF_HW_DRV_H */
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