IXBar::Use Struct Reference

#include <input_xbar.h>

Inheritance diagram for IXBar::Use:

Classes
struct	Byte
struct	GroupInfo
struct	TotalInfo
struct	Way

Public Types
enum	flags_t {   NeedRange = 1 , NeedXor = 2 , Align16lo = 4 , Align16hi = 8 ,   Align32lo = 16 , Align32hi = 32 }
typedef safe_vector< safe_vector< Byte > * >	TotalBytes
enum	type_t {   EXACT_MATCH , ATCAM_MATCH , TERNARY_MATCH , TRIE_MATCH ,   GATEWAY , ACTION , PROXY_HASH , SELECTOR ,   METER , STATEFUL_ALU , HASH_DIST , TYPES }

Public Member Functions
virtual void	add (const Use &alloc)
bool	allocated ()
virtual TotalBytes	atcam_match () const
virtual safe_vector< Byte >	atcam_partition (int *hash_group=nullptr) const
virtual safe_vector< TotalInfo >	bits_per_search_bus () const
virtual void	clear ()
virtual Use *	clone () const =0
virtual unsigned	compute_hash_tables ()
virtual void	dbprint (std::ostream &) const
virtual bool	emit_gateway_asm (const MauAsmOutput &, std::ostream &, indent_t, const IR::MAU::Table *) const =0
virtual void	emit_ixbar_asm (const PhvInfo &phv, std::ostream &out, indent_t indent, const TableMatch *fmt, const IR::MAU::Table *) const =0
virtual void	emit_ixbar_hash_table (int hash_table, safe_vector< Slice > &match_data, safe_vector< Slice > &ghost, const TableMatch *fmt, std::map< int, std::map< int, Slice > > &sort) const =0
virtual void	emit_salu_bytemasks (std::ostream &out, indent_t indent) const =0
virtual bool	empty () const
int	findBytesOnIxbar (const PHV::FieldSlice &sl) const
virtual bitvec	galois_matrix_bits () const =0
virtual int	gateway_group () const
virtual int	groups () const
virtual const std::map< int, const IR::Expression * > &	hash_computed_expressions () const =0
virtual int	hash_dist_hash_group () const =0
virtual std::string	hash_dist_used_for () const =0
virtual int	hash_groups () const =0
virtual bool	is_parity_enabled () const =0
virtual TotalBytes	match_hash (safe_vector< int > *hash_groups=nullptr) const
virtual bitvec	meter_bit_mask () const =0
virtual int	search_buses_single () const
virtual int	ternary_align (const Loc &) const =0
virtual int	total_input_bits () const =0
virtual void	update_resources (int, BFN::Resources::StageResources &) const
std::string	used_for () const
virtual const char *	way_source_kind () const =0

Public Attributes
enum IXBar::Use::type_t	type = TYPES
safe_vector< Byte >	use
std::string	used_by
safe_vector< Way >	way_use

Detailed Description

IXBar::Use tracks the input xbar use of a single table

Member Function Documentation

atcam_match()

IXBar::Use::TotalBytes IXBar::Use::atcam_match ( ) const

virtual

Do not count partition indexes within the match bytes and double count repeated bytes

atcam_partition()

safe_vector< IXBar::Use::Byte > IXBar::Use::atcam_partition ( int * hash_group = nullptr ) const

virtual

Provides the bytes and hash group location of the partition index of an atcam table

Reimplemented in Tofino::IXBar::Use.

bits_per_search_bus()

safe_vector< IXBar::Use::TotalInfo > IXBar::Use::bits_per_search_bus ( ) const

virtual

Provides information per search bus of how many bytes/bits a particular section of table uses in order to determine what section is the best candidate to ghost off

Reimplemented in Tofino::IXBar::Use.

gateway_group()

int IXBar::Use::gateway_group ( ) const

virtual

Returns the ixbar group that the gateway is allocated to

match_hash()

IXBar::Use::TotalBytes IXBar::Use::match_hash ( safe_vector< int > * hash_groups = nullptr ) const

virtual

Returns each vector of match data. If multiple hash groups are used, then the allocation, per hash group is provided

Reimplemented in Tofino::IXBar::Use.

search_buses_single()

int IXBar::Use::search_buses_single ( ) const

virtual

Base matching on search buses rather than ixbar groups, as potentially an input xbar group for an ATCAM table has multiple matches in it.

used_for()

std::string IXBar::Use::used_for

(

)

const

Visualization Information of Bytes and their corresponding Hash Matrix Bits