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✏️ Editing: t5-config.txt

# Chelsio T5 Factory Default configuration file.
#
# Copyright (C) 2010-2015 Chelsio Communications.  All rights reserved.
#
#   DO NOT MODIFY THIS FILE UNDER ANY CIRCUMSTANCES.  MODIFICATION OF THIS FILE
#   WILL RESULT IN A NON-FUNCTIONAL ADAPTER AND MAY RESULT IN PHYSICAL DAMAGE
#   TO ADAPTERS.

# This file provides the default, power-on configuration for 4-port T5-based
# adapters shipped from the factory.  These defaults are designed to address
# the needs of the vast majority of Terminator customers.  The basic idea is to
# have a default configuration which allows a customer to plug a Terminator
# adapter in and have it work regardless of OS, driver or application except in
# the most unusual and/or demanding customer applications.
#
# Many of the Terminator resources which are described by this configuration
# are finite.  This requires balancing the configuration/operation needs of
# device drivers across OSes and a large number of customer application.
#
# Some of the more important resources to allocate and their constaints are:
#  1. Virtual Interfaces: 256.
#  2. Ingress Queues with Free Lists: 1024.
#  3. Egress Queues: 128K.
#  4. MSI-X Vectors: 1088.
#  5. Multi-Port Support (MPS) TCAM: 336 entries to support MAC destination
#     address matching on Ingress Packets.
#
# Some of the important OS/Driver resource needs are:
#  6. Some OS Drivers will manage all resources through a single Physical
#     Function (currently PF4 but it could be any Physical Function).
#  7. Some OS Drivers will manage different ports and functions (NIC,
#     storage, etc.) on different Physical Functions.  For example, NIC
#     functions for ports 0-3 on PF0-3, FCoE on PF4, iSCSI on PF5, etc.
#
# Some of the customer application needs which need to be accommodated:
#  8. Some customers will want to support large CPU count systems with
#     good scaling.  Thus, we'll need to accommodate a number of
#     Ingress Queues and MSI-X Vectors to allow up to some number of CPUs
#     to be involved per port and per application function.  For example,
#     in the case where all ports and application functions will be
#     managed via a single Unified PF and we want to accommodate scaling up
#     to 8 CPUs, we would want:
#
#         4 ports *
#         3 application functions (NIC, FCoE, iSCSI) per port *
#         8 Ingress Queue/MSI-X Vectors per application function
#
#     for a total of 96 Ingress Queues and MSI-X Vectors on the Unified PF.
#     (Plus a few for Firmware Event Queues, etc.)
#
#  9. Some customers will want to use PCI-E SR-IOV Capability to allow Virtual
#     Machines to directly access T6 functionality via SR-IOV Virtual Functions
#     and "PCI Device Passthrough" -- this is especially true for the NIC
#     application functionality.
#

# Global configuration settings.
#
[global]
	rss_glb_config_mode = basicvirtual
	rss_glb_config_options = tnlmapen,hashtoeplitz,tnlalllkp

# PL_TIMEOUT register
	pl_timeout_value = 10000	# the timeout value in units of us

# The following Scatter Gather Engine (SGE) settings assume a 4KB Host
	# Page Size and a 64B L1 Cache Line Size. It programs the
	# EgrStatusPageSize and IngPadBoundary to 64B and the PktShift to 2.
	# If a Master PF Driver finds itself on a machine with different
	# parameters, then the Master PF Driver is responsible for initializing
	# these parameters to appropriate values.
	#
	# Notes:
	#  1. The Free List Buffer Sizes below are raw and the firmware will
	#     round them up to the Ingress Padding Boundary.
	#  2. The SGE Timer Values below are expressed below in microseconds.
	#     The firmware will convert these values to Core Clock Ticks when
	#     it processes the configuration parameters.
	#
	reg[0x1008] = 0x40810/0x21c70	# SGE_CONTROL
	reg[0x100c] = 0x22222222	# SGE_HOST_PAGE_SIZE
	reg[0x10a0] = 0x01040810	# SGE_INGRESS_RX_THRESHOLD
	reg[0x1044] = 4096		# SGE_FL_BUFFER_SIZE0
	reg[0x1048] = 65536		# SGE_FL_BUFFER_SIZE1
	reg[0x104c] = 1536		# SGE_FL_BUFFER_SIZE2
	reg[0x1050] = 9024		# SGE_FL_BUFFER_SIZE3
	reg[0x1054] = 9216		# SGE_FL_BUFFER_SIZE4
	reg[0x1058] = 2048		# SGE_FL_BUFFER_SIZE5
	reg[0x105c] = 128		# SGE_FL_BUFFER_SIZE6
	reg[0x1060] = 8192		# SGE_FL_BUFFER_SIZE7
	reg[0x1064] = 16384		# SGE_FL_BUFFER_SIZE8
	reg[0x10a4] = 0x00280000/0x3ffc0000 # SGE_DBFIFO_STATUS
	reg[0x1118] = 0x00002800/0x00003c00 # SGE_DBFIFO_STATUS2
	reg[0x10a8] = 0x402000/0x402000	# SGE_DOORBELL_CONTROL

# SGE_THROTTLE_CONTROL
	bar2throttlecount = 500		# bar2throttlecount in us

sge_timer_value = 5, 10, 20, 50, 100, 200 # SGE_TIMER_VALUE* in usecs

reg[0x1124] = 0x00000400/0x00000400 # SGE_CONTROL2, enable VFIFO; if
					# SGE_VFIFO_SIZE is not set, then
					# firmware will set it up in function
					# of number of egress queues used

reg[0x1130] = 0x00d5ffeb	# SGE_DBP_FETCH_THRESHOLD, fetch
					# threshold set to queue depth
					# minus 128-entries for FL and HP
					# queues, and 0xfff for LP which
					# prompts the firmware to set it up
					# in function of egress queues
					# used

reg[0x113c] = 0x0002ffc0	# SGE_VFIFO_SIZE, set to 0x2ffc0 which
					# prompts the firmware to set it up in
					# function of number of egress queues
					# used

# enable TP_OUT_CONFIG.IPIDSPLITMODE
	reg[0x7d04] = 0x00010000/0x00010000

# disable TP_PARA_REG3.RxFragEn
	reg[0x7d6c] = 0x00000000/0x00007000

# enable TP_PARA_REG6.EnableCSnd
	reg[0x7d78] = 0x00000400/0x00000000

reg[0x7dc0] = 0x0e2f8849	# TP_SHIFT_CNT

# TP_VLAN_PRI_MAP to select filter tuples and enable ServerSram
	# filter control: compact, fcoemask
	# server sram   : srvrsram
	# filter tuples : fragmentation, mpshittype, macmatch, ethertype,
	#		  protocol, tos, vlan, vnic_id, port, fcoe
	# valid filterModes are described the Terminator 5 Data Book
	filterMode = fcoemask, srvrsram, fragmentation, mpshittype, protocol, vlan, port, fcoe

# filter tuples enforced in LE active region (equal to or subset of filterMode)
	filterMask = protocol, fcoe

# Percentage of dynamic memory (in either the EDRAM or external MEM)
	# to use for TP RX payload
	tp_pmrx = 30

# TP RX payload page size
	tp_pmrx_pagesize = 64K

# TP number of RX channels
	tp_nrxch = 0		# 0 (auto) = 1

# Percentage of dynamic memory (in either the EDRAM or external MEM)
	# to use for TP TX payload
	tp_pmtx = 50

# TP TX payload page size
	tp_pmtx_pagesize = 64K

# TP number of TX channels
	tp_ntxch = 0		# 0 (auto) = equal number of ports

# TP OFLD MTUs
	tp_mtus = 88, 256, 512, 576, 808, 1024, 1280, 1488, 1500, 2002, 2048, 4096, 4352, 8192, 9000, 9600

# TP_GLOBAL_CONFIG
	reg[0x7d08] = 0x00000800/0x00000800 # set IssFromCplEnable

# TP_PC_CONFIG
	reg[0x7d48] = 0x00000000/0x00000400 # clear EnableFLMError

# TP_PARA_REG0
	reg[0x7d60] = 0x06000000/0x07000000 # set InitCWND to 6

# ULPRX iSCSI Page Sizes
	reg[0x19168] = 0x04020100 # 64K, 16K, 8K and 4K

# LE_DB_CONFIG
	reg[0x19c04] = 0x00400000/0x00400000 # LE Server SRAM Enable

# MC configuration
	mc_mode_brc[0] = 1		# mc0 - 1: enable BRC, 0: enable RBC
	mc_mode_brc[1] = 1		# mc1 - 1: enable BRC, 0: enable RBC

# ULP_TX_CONFIG
	reg[0x8dc0] = 0x00000004/0x00000004 # Enable more error msg for ...
					    # TPT error.

# Some "definitions" to make the rest of this a bit more readable.  We support
# 4 ports, 3 functions (NIC, FCoE and iSCSI), scaling up to 8 "CPU Queue Sets"
# per function per port ...
#
# NMSIX = 1088			# available MSI-X Vectors
# NVI = 128			# available Virtual Interfaces
# NMPSTCAM = 336		# MPS TCAM entries
#
# NPORTS = 4			# ports
# NCPUS = 8			# CPUs we want to support scalably
# NFUNCS = 3			# functions per port (NIC, FCoE, iSCSI)

# Breakdown of Virtual Interface/Queue/Interrupt resources for the "Unified
# PF" which many OS Drivers will use to manage most or all functions.
#
# Each Ingress Queue can use one MSI-X interrupt but some Ingress Queues can
# use Forwarded Interrupt Ingress Queues.  For these latter, an Ingress Queue
# would be created and the Queue ID of a Forwarded Interrupt Ingress Queue
# will be specified as the "Ingress Queue Asynchronous Destination Index."
# Thus, the number of MSI-X Vectors assigned to the Unified PF will be less
# than or equal to the number of Ingress Queues ...
#
# NVI_NIC = 4			# NIC access to NPORTS
# NFLIQ_NIC = 32		# NIC Ingress Queues with Free Lists
# NETHCTRL_NIC = 32		# NIC Ethernet Control/TX Queues
# NEQ_NIC = 64			# NIC Egress Queues (FL, ETHCTRL/TX)
# NMPSTCAM_NIC = 16		# NIC MPS TCAM Entries (NPORTS*4)
# NMSIX_NIC = 32		# NIC MSI-X Interrupt Vectors (FLIQ)
#
# NVI_OFLD = 0			# Offload uses NIC function to access ports
# NFLIQ_OFLD = 16		# Offload Ingress Queues with Free Lists
# NETHCTRL_OFLD = 0		# Offload Ethernet Control/TX Queues
# NEQ_OFLD = 16			# Offload Egress Queues (FL)
# NMPSTCAM_OFLD = 0		# Offload MPS TCAM Entries (uses NIC's)
# NMSIX_OFLD = 16		# Offload MSI-X Interrupt Vectors (FLIQ)
#
# NVI_RDMA = 0			# RDMA uses NIC function to access ports
# NFLIQ_RDMA = 4		# RDMA Ingress Queues with Free Lists
# NETHCTRL_RDMA = 0		# RDMA Ethernet Control/TX Queues
# NEQ_RDMA = 4			# RDMA Egress Queues (FL)
# NMPSTCAM_RDMA = 0		# RDMA MPS TCAM Entries (uses NIC's)
# NMSIX_RDMA = 4		# RDMA MSI-X Interrupt Vectors (FLIQ)
#
# NEQ_WD = 128			# Wire Direct TX Queues and FLs
# NETHCTRL_WD = 64		# Wire Direct TX Queues
# NFLIQ_WD = 64	`		# Wire Direct Ingress Queues with Free Lists
#
# NVI_ISCSI = 4			# ISCSI access to NPORTS
# NFLIQ_ISCSI = 4		# ISCSI Ingress Queues with Free Lists
# NETHCTRL_ISCSI = 0		# ISCSI Ethernet Control/TX Queues
# NEQ_ISCSI = 4			# ISCSI Egress Queues (FL)
# NMPSTCAM_ISCSI = 4		# ISCSI MPS TCAM Entries (NPORTS)
# NMSIX_ISCSI = 4		# ISCSI MSI-X Interrupt Vectors (FLIQ)
#
# NVI_FCOE = 4			# FCOE access to NPORTS
# NFLIQ_FCOE = 34		# FCOE Ingress Queues with Free Lists
# NETHCTRL_FCOE = 32		# FCOE Ethernet Control/TX Queues
# NEQ_FCOE = 66			# FCOE Egress Queues (FL)
# NMPSTCAM_FCOE = 32 		# FCOE MPS TCAM Entries (NPORTS)
# NMSIX_FCOE = 34		# FCOE MSI-X Interrupt Vectors (FLIQ)

# Two extra Ingress Queues per function for Firmware Events and Forwarded
# Interrupts, and two extra interrupts per function for Firmware Events (or a
# Forwarded Interrupt Queue) and General Interrupts per function.
#
# NFLIQ_EXTRA = 6		# "extra" Ingress Queues 2*NFUNCS (Firmware and
# 				#   Forwarded Interrupts
# NMSIX_EXTRA = 6		# extra interrupts 2*NFUNCS (Firmware and
# 				#   General Interrupts

# Microsoft HyperV resources.  The HyperV Virtual Ingress Queues will have
# their interrupts forwarded to another set of Forwarded Interrupt Queues.
#
# NVI_HYPERV = 16		# VMs we want to support
# NVIIQ_HYPERV = 2		# Virtual Ingress Queues with Free Lists per VM
# NFLIQ_HYPERV = 40		# VIQs + NCPUS Forwarded Interrupt Queues
# NEQ_HYPERV = 32		# VIQs Free Lists
# NMPSTCAM_HYPERV = 16		# MPS TCAM Entries (NVI_HYPERV)
# NMSIX_HYPERV = 8		# NCPUS Forwarded Interrupt Queues

# Adding all of the above Unified PF resource needs together: (NIC + OFLD +
# RDMA + ISCSI + FCOE + EXTRA + HYPERV)
#
# NVI_UNIFIED = 28
# NFLIQ_UNIFIED = 106
# NETHCTRL_UNIFIED = 32
# NEQ_UNIFIED = 124
# NMPSTCAM_UNIFIED = 40
#
# The sum of all the MSI-X resources above is 74 MSI-X Vectors but we'll round
# that up to 128 to make sure the Unified PF doesn't run out of resources.
#
# NMSIX_UNIFIED = 128
#
# The Storage PFs could need up to NPORTS*NCPUS + NMSIX_EXTRA MSI-X Vectors
# which is 34 but they're probably safe with 32.
#
# NMSIX_STORAGE = 32

# Note: The UnifiedPF is PF4 which doesn't have any Virtual Functions
# associated with it.  Thus, the MSI-X Vector allocations we give to the
# UnifiedPF aren't inherited by any Virtual Functions.  As a result we can
# provision many more Virtual Functions than we can if the UnifiedPF were
# one of PF0-3.
#

# All of the below PCI-E parameters are actually stored in various *_init.txt
# files.  We include them below essentially as comments.
#
# For PF0-3 we assign 8 vectors each for NIC Ingress Queues of the associated
# ports 0-3.
#
# For PF4, the Unified PF, we give it an MSI-X Table Size as outlined above.
#
# For PF5-6 we assign enough MSI-X Vectors to support FCoE and iSCSI
# storage applications across all four possible ports.
#
# Additionally, since the UnifiedPF isn't one of the per-port Physical
# Functions, we give the UnifiedPF and the PF0-3 Physical Functions
# different PCI Device IDs which will allow Unified and Per-Port Drivers
# to directly select the type of Physical Function to which they wish to be
# attached.
#
# Note that the actual values used for the PCI-E Intelectual Property will be
# 1 less than those below since that's the way it "counts" things.  For
# readability, we use the number we actually mean ...
#
# PF0_INT = 8			# NCPUS
# PF1_INT = 8			# NCPUS
# PF2_INT = 8			# NCPUS
# PF3_INT = 8			# NCPUS
# PF0_3_INT = 32		# PF0_INT + PF1_INT + PF2_INT + PF3_INT
#
# PF4_INT = 128			# NMSIX_UNIFIED
# PF5_INT = 32			# NMSIX_STORAGE
# PF6_INT = 32			# NMSIX_STORAGE
# PF7_INT = 0			# Nothing Assigned
# PF4_7_INT = 192		# PF4_INT + PF5_INT + PF6_INT + PF7_INT
#
# PF0_7_INT = 224		# PF0_3_INT + PF4_7_INT
#
# With the above we can get 17 VFs/PF0-3 (limited by 336 MPS TCAM entries)
# but we'll lower that to 16 to make our total 64 and a nice power of 2 ...
#
# NVF = 16

# For those OSes which manage different ports on different PFs, we need
# only enough resources to support a single port's NIC application functions
# on PF0-3.  The below assumes that we're only doing NIC with NCPUS "Queue
# Sets" for ports 0-3.  The FCoE and iSCSI functions for such OSes will be
# managed on the "storage PFs" (see below).
#
[function "0"]
	nvf = 16		# NVF on this function
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 1			# 1 port
	niqflint = 8		# NCPUS "Queue Sets"
	nethctrl = 8		# NCPUS "Queue Sets"
	neq = 16		# niqflint + nethctrl Egress Queues
	nexactf = 8		# number of exact MPSTCAM MAC filters
	cmask = all		# access to all channels
	pmask = 0x1		# access to only one port

[function "1"]
	nvf = 16		# NVF on this function
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 1			# 1 port
	niqflint = 8		# NCPUS "Queue Sets"
	nethctrl = 8		# NCPUS "Queue Sets"
	neq = 16		# niqflint + nethctrl Egress Queues
	nexactf = 8		# number of exact MPSTCAM MAC filters
	cmask = all		# access to all channels
	pmask = 0x2		# access to only one port

[function "2"]
	nvf = 16		# NVF on this function
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 1			# 1 port
	niqflint = 8		# NCPUS "Queue Sets"
	nethctrl = 8		# NCPUS "Queue Sets"
	neq = 16		# niqflint + nethctrl Egress Queues
	nexactf = 8		# number of exact MPSTCAM MAC filters
	cmask = all		# access to all channels
	pmask = 0x4		# access to only one port

[function "3"]
	nvf = 16		# NVF on this function
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 1			# 1 port
	niqflint = 8		# NCPUS "Queue Sets"
	nethctrl = 8		# NCPUS "Queue Sets"
	neq = 16		# niqflint + nethctrl Egress Queues
	nexactf = 8		# number of exact MPSTCAM MAC filters
	cmask = all		# access to all channels
	pmask = 0x8		# access to only one port

# Some OS Drivers manage all application functions for all ports via PF4.
# Thus we need to provide a large number of resources here.  For Egress
# Queues we need to account for both TX Queues as well as Free List Queues
# (because the host is responsible for producing Free List Buffers for the
# hardware to consume).
#
[function "4"]
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 28		# NVI_UNIFIED
	niqflint = 170		# NFLIQ_UNIFIED + NLFIQ_WD
	nethctrl = 100		# NETHCTRL_UNIFIED + NETHCTRL_WD
	neq = 256		# NEQ_UNIFIED + NEQ_WD
	nqpcq = 12288 
	nexactf = 40		# NMPSTCAM_UNIFIED
	cmask = all		# access to all channels
	pmask = all		# access to all four ports ...
	nethofld = 1024		# number of user mode ethernet flow contexts
	nroute = 32		# number of routing region entries
	nclip = 32		# number of clip region entries
	nfilter = 496		# number of filter region entries
	nserver = 496		# number of server region entries
	nhash = 12288		# number of hash region entries
	protocol = nic_vm, ofld, rddp, rdmac, iscsi_initiator_pdu, iscsi_target_pdu, iscsi_t10dif, nic_hashfilter
	tp_l2t = 3072
	tp_ddp = 2
	tp_ddp_iscsi = 2
	tp_stag = 2
	tp_pbl = 5
	tp_rq = 7

# We have FCoE and iSCSI storage functions on PF5 and PF6 each of which may
# need to have Virtual Interfaces on each of the four ports with up to NCPUS
# "Queue Sets" each.
#
[function "5"]
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 4			# NPORTS
	niqflint = 34		# NPORTS*NCPUS + NMSIX_EXTRA
	nethctrl = 32		# NPORTS*NCPUS
	neq = 64		# NPORTS*NCPUS * 2 (FL, ETHCTRL/TX)
	nexactf = 16		# (NPORTS *(no of snmc grp + 1 hw mac) + 1 anmc grp)) rounded to 16.
	cmask = all		# access to all channels
	pmask = all		# access to all four ports ...
	nserver = 16
	nhash = 2048
	tp_l2t = 1020
	protocol = iscsi_initiator_fofld
	tp_ddp_iscsi = 2
	iscsi_ntask = 2048
	iscsi_nsess = 2048
	iscsi_nconn_per_session = 1
	iscsi_ninitiator_instance = 64

[function "6"]
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 4			# NPORTS
	niqflint = 34		# NPORTS*NCPUS + NMSIX_EXTRA
	nethctrl = 32		# NPORTS*NCPUS
	neq = 66		# NPORTS*NCPUS * 2 (FL, ETHCTRL/TX) + 2 (EXTRA)
	nexactf = 32		# NPORTS + adding 28 exact entries for FCoE
				# which is OK since < MIN(SUM PF0..3, PF4)
				# and we never load PF0..3 and PF4 concurrently
	cmask = all		# access to all channels
	pmask = all		# access to all four ports ...
	nhash = 2048
	tp_l2t = 4
	protocol = fcoe_initiator
	tp_ddp = 2
	fcoe_nfcf = 16
	fcoe_nvnp = 32
	fcoe_nssn = 1024

# The following function, 1023, is not an actual PCIE function but is used to
# configure and reserve firmware internal resources that come from the global
# resource pool.
#
[function "1023"]
	wx_caps = all		# write/execute permissions for all commands
	r_caps = all		# read permissions for all commands
	nvi = 4			# NVI_UNIFIED
	cmask = all		# access to all channels
	pmask = all		# access to all four ports ...
	nexactf = 8		# NPORTS + DCBX +
	nfilter = 16		# number of filter region entries

# For Virtual functions, we only allow NIC functionality and we only allow
# access to one port (1 << PF).  Note that because of limitations in the
# Scatter Gather Engine (SGE) hardware which checks writes to VF KDOORBELL
# and GTS registers, the number of Ingress and Egress Queues must be a power
# of 2.
#
[function "0/*"]		# NVF
	wx_caps = 0x82		# DMAQ | VF
	r_caps = 0x86		# DMAQ | VF | PORT
	nvi = 1			# 1 port
	niqflint = 6		# 2 "Queue Sets" + NXIQ
	nethctrl = 4		# 2 "Queue Sets"
	neq = 8			# 2 "Queue Sets" * 2
	nexactf = 4
	cmask = all		# access to all channels
	pmask = 0x1		# access to only one port ...

[function "1/*"]		# NVF
	wx_caps = 0x82		# DMAQ | VF
	r_caps = 0x86		# DMAQ | VF | PORT
	nvi = 1			# 1 port
	niqflint = 6		# 2 "Queue Sets" + NXIQ
	nethctrl = 4		# 2 "Queue Sets"
	neq = 8			# 2 "Queue Sets" * 2
	nexactf = 4
	cmask = all		# access to all channels
	pmask = 0x2		# access to only one port ...

[function "2/*"]		# NVF
	wx_caps = 0x82		# DMAQ | VF
	r_caps = 0x86		# DMAQ | VF | PORT
	nvi = 1			# 1 port
	niqflint = 6		# 2 "Queue Sets" + NXIQ
	nethctrl = 4		# 2 "Queue Sets"
	neq = 8			# 2 "Queue Sets" * 2
	nexactf = 4
	cmask = all		# access to all channels
	pmask = 0x4		# access to only one port ...

[function "3/*"]		# NVF
	wx_caps = 0x82		# DMAQ | VF
	r_caps = 0x86		# DMAQ | VF | PORT
	nvi = 1			# 1 port
	niqflint = 6		# 2 "Queue Sets" + NXIQ
	nethctrl = 4		# 2 "Queue Sets"
	neq = 8			# 2 "Queue Sets" * 2
	nexactf = 4
	cmask = all		# access to all channels
	pmask = 0x8		# access to only one port ...

# MPS features a 196608 bytes ingress buffer that is used for ingress buffering
# for packets from the wire as well as the loopback path of the L2 switch. The
# folling params control how the buffer memory is distributed and the L2 flow
# control settings:
#
# bg_mem:	%-age of mem to use for port/buffer group
# lpbk_mem:	%-age of port/bg mem to use for loopback
# hwm:		high watermark; bytes available when starting to send pause
#		frames (in units of 0.1 MTU)
# lwm:		low watermark; bytes remaining when sending 'unpause' frame
#		(in inuits of 0.1 MTU)
# dwm:		minimum delta between high and low watermark (in units of 100
#		Bytes)
#
[port "0"]
	dcb = ppp, dcbx		# configure for DCB PPP and enable DCBX offload
	bg_mem = 25
	lpbk_mem = 25
	hwm = 30
	lwm = 15
	dwm = 30
	dcb_app_tlv[0] = 0x8906, ethertype, 3
	dcb_app_tlv[1] = 0x8914, ethertype, 3
	dcb_app_tlv[2] = 3260, socketnum, 5

[port "1"]
	dcb = ppp, dcbx
	bg_mem = 25
	lpbk_mem = 25
	hwm = 30
	lwm = 15
	dwm = 30
	dcb_app_tlv[0] = 0x8906, ethertype, 3
	dcb_app_tlv[1] = 0x8914, ethertype, 3
	dcb_app_tlv[2] = 3260, socketnum, 5

[port "2"]
	dcb = ppp, dcbx
	bg_mem = 25
	lpbk_mem = 25
	hwm = 30
	lwm = 15
	dwm = 30
	dcb_app_tlv[0] = 0x8906, ethertype, 3
	dcb_app_tlv[1] = 0x8914, ethertype, 3
	dcb_app_tlv[2] = 3260, socketnum, 5

[port "3"]
	dcb = ppp, dcbx
	bg_mem = 25
	lpbk_mem = 25
	hwm = 30
	lwm = 15
	dwm = 30
	dcb_app_tlv[0] = 0x8906, ethertype, 3
	dcb_app_tlv[1] = 0x8914, ethertype, 3
	dcb_app_tlv[2] = 3260, socketnum, 5

[fini]
	version = 0x1425001c
	checksum = 0xd8c8fbd6

# Total resources used by above allocations:
#   Virtual Interfaces: 104
#   Ingress Queues/w Free Lists and Interrupts: 526
#   Egress Queues: 702
#   MPS TCAM Entries: 336
#   MSI-X Vectors: 736
#   Virtual Functions: 64

MR SKB