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menuconfig FSL_SDK_DPAA_ETH
tristate "DPAA Ethernet"
depends on (FSL_SOC || ARM64 || ARM) && FSL_SDK_BMAN && FSL_SDK_QMAN && FSL_SDK_FMAN && !FSL_DPAA_ETH
select PHYLIB
help
Data Path Acceleration Architecture Ethernet driver,
supporting the Freescale QorIQ chips.
Depends on Freescale Buffer Manager and Queue Manager
driver and Frame Manager Driver.
if FSL_SDK_DPAA_ETH
config FSL_DPAA_HOOKS
bool "DPAA Ethernet driver hooks"
config FSL_DPAA_CEETM
bool "DPAA CEETM QoS"
depends on NET_SCHED
default n
help
Enable QoS offloading support through the CEETM hardware block.
config FSL_DPAA_CEETM_CCS_THRESHOLD_1G
hex "CEETM egress congestion threshold on 1G ports"
depends on FSL_DPAA_CEETM
range 0x1000 0x10000000
default "0x000a0000"
help
The size in bytes of the CEETM egress Class Congestion State threshold on 1G ports.
The threshold needs to be configured keeping in mind the following factors:
- A threshold too large will buffer frames for a long time in the TX queues,
when a small shaping rate is configured. This will cause buffer pool depletion
or out of memory errors. This in turn will cause frame loss on RX;
- A threshold too small will cause unnecessary frame loss by entering
congestion too often.
config FSL_DPAA_CEETM_CCS_THRESHOLD_10G
hex "CEETM egress congestion threshold on 10G ports"
depends on FSL_DPAA_CEETM
range 0x1000 0x20000000
default "0x00640000"
help
The size in bytes of the CEETM egress Class Congestion State threshold on 10G ports.
See FSL_DPAA_CEETM_CCS_THRESHOLD_1G for details.
config FSL_DPAA_OFFLINE_PORTS
bool "Offline Ports support"
depends on FSL_SDK_DPAA_ETH
default y
help
The Offline Parsing / Host Command ports (short: OH ports, of Offline ports) provide
most of the functionality of the regular, online ports, except they receive their
frames from a core or an accelerator on the SoC, via QMan frame queues,
rather than directly from the network.
Offline ports are configured via PCD (Parse-Classify-Distribute) schemes, just like
any online FMan port. They deliver the processed frames to frame queues, according
to the applied PCD configurations.
Choosing this feature will not impact the functionality and/or performance of the system,
so it is safe to have it.
config FSL_DPAA_ADVANCED_DRIVERS
bool "Advanced DPAA Ethernet drivers"
depends on FSL_SDK_DPAA_ETH
default y
help
Besides the standard DPAA Ethernet driver the DPAA Proxy initialization driver
is needed to support advanced scenarios. Select this to also build the advanced
drivers.
config FSL_DPAA_ETH_JUMBO_FRAME
bool "Optimize for jumbo frames"
default n
help
Optimize the DPAA Ethernet driver throughput for large frames
termination traffic (e.g. 4K and above).
NOTE: This option can only be used if FSL_FM_MAX_FRAME_SIZE
is set to 9600 bytes.
Using this option in combination with small frames increases
significantly the driver's memory footprint and may even deplete
the system memory. Also, the skb truesize is altered and messages
from the stack that warn against this are bypassed.
This option is not available on LS1043.
config FSL_DPAA_TS
bool "Linux compliant timestamping"
depends on FSL_SDK_DPAA_ETH
default n
help
Enable Linux API compliant timestamping support.
config FSL_DPAA_1588
bool "IEEE 1588-compliant timestamping"
depends on FSL_SDK_DPAA_ETH
select FSL_DPAA_TS
default n
help
Enable IEEE1588 support code.
config FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE
bool "Use driver's Tx queue selection mechanism"
default y
depends on FSL_SDK_DPAA_ETH
help
The DPAA-Ethernet driver defines a ndo_select_queue() callback for optimal selection
of the egress FQ. That will override the XPS support for this netdevice.
If for whatever reason you want to be in control of the egress FQ-to-CPU selection and mapping,
or simply don't want to use the driver's ndo_select_queue() callback, then unselect this
and use the standard XPS support instead.
config FSL_DPAA_ETH_MAX_BUF_COUNT
int "Maximum nuber of buffers in private bpool"
depends on FSL_SDK_DPAA_ETH
range 64 2048
default "128"
help
The maximum number of buffers to be by default allocated in the DPAA-Ethernet private port's
buffer pool. One needn't normally modify this, as it has probably been tuned for performance
already. This cannot be lower than DPAA_ETH_REFILL_THRESHOLD.
config FSL_DPAA_ETH_REFILL_THRESHOLD
int "Private bpool refill threshold"
depends on FSL_SDK_DPAA_ETH
range 32 FSL_DPAA_ETH_MAX_BUF_COUNT
default "80"
help
The DPAA-Ethernet driver will start replenishing buffer pools whose count
falls below this threshold. This must be related to DPAA_ETH_MAX_BUF_COUNT. One needn't normally
modify this value unless one has very specific performance reasons.
config FSL_DPAA_CS_THRESHOLD_1G
hex "Egress congestion threshold on 1G ports"
depends on FSL_SDK_DPAA_ETH
range 0x1000 0x10000000
default "0x06000000"
help
The size in bytes of the egress Congestion State notification threshold on 1G ports.
The 1G dTSECs can quite easily be flooded by cores doing Tx in a tight loop
(e.g. by sending UDP datagrams at "while(1) speed"),
and the larger the frame size, the more acute the problem.
So we have to find a balance between these factors:
- avoiding the device staying congested for a prolonged time (risking
the netdev watchdog to fire - see also the tx_timeout module param);
- affecting performance of protocols such as TCP, which otherwise
behave well under the congestion notification mechanism;
- preventing the Tx cores from tightly-looping (as if the congestion
threshold was too low to be effective);
- running out of memory if the CS threshold is set too high.
config FSL_DPAA_CS_THRESHOLD_10G
hex "Egress congestion threshold on 10G ports"
depends on FSL_SDK_DPAA_ETH
range 0x1000 0x20000000
default "0x10000000"
help
The size in bytes of the egress Congestion State notification threshold on 10G ports.
config FSL_DPAA_INGRESS_CS_THRESHOLD
hex "Ingress congestion threshold on FMan ports"
depends on FSL_SDK_DPAA_ETH
default "0x10000000"
help
The size in bytes of the ingress tail-drop threshold on FMan ports.
Traffic piling up above this value will be rejected by QMan and discarded by FMan.
config FSL_DPAA_ETH_DEBUGFS
bool "DPAA Ethernet debugfs interface"
depends on DEBUG_FS && FSL_SDK_DPAA_ETH
default y
help
This option compiles debugfs code for the DPAA Ethernet driver.
config FSL_DPAA_ETH_DEBUG
bool "DPAA Ethernet Debug Support"
depends on FSL_SDK_DPAA_ETH
default n
help
This option compiles debug code for the DPAA Ethernet driver.
config FSL_DPAA_DBG_LOOP
bool "DPAA Ethernet Debug loopback"
depends on FSL_DPAA_ETH_DEBUGFS && FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE
default n
help
This option allows to divert all received traffic on a certain interface A towards a
selected interface B. This option is used to benchmark the HW + Ethernet driver in
isolation from the Linux networking stack. The loops are controlled by debugfs entries,
one for each interface. By default all loops are disabled (target value is -1). I.e. to
change the loop setting for interface 4 and divert all received traffic to interface 5
write Tx interface number in the receive interface debugfs file:
# cat /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop
4->-1
# echo 5 > /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop
# cat /sys/kernel/debug/powerpc/fsl_dpa/eth4_loop
4->5
endif # FSL_SDK_DPAA_ETH
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