Hi, Im trying a Microchip Lan743x pcie ethernet adapter on a jetson tx2 dev board with jetpack 4.5.1.
Since the 4.9 kernel does not contain the driver for the adapter I patched in the sources from the mainline 4.20 kernel.
Add first glance the adapter seems to work lspci list following stats:
01:00.0 Ethernet controller: Microchip Technology / SMSC Device 7430 (rev 11)
Subsystem: Microchip Technology / SMSC Device 7430
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 382
Region 0: Memory at 40100000 (64-bit, non-prefetchable) [size=8K]
Region 2: Memory at 40102000 (64-bit, non-prefetchable) [size=256]
Region 4: Memory at 40102100 (64-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/8 Maskable+ 64bit+
Address: 0000000000000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <32us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend+
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via message/WAKE#
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Capabilities: [b0] MSI-X: Enable+ Count=8 Masked-
Vector table: BAR=2 offset=00000000
PBA: BAR=4 offset=00000000
Capabilities: [100 v2] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [148 v1] Device Serial Number 00-1e-c0-ff-ff-e1-30-28
Capabilities: [158 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [160 v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=10us PortTPowerOnTime=10us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=0ns
L1SubCtl2: T_PwrOn=10us
Capabilities: [170 v1] Vendor Specific Information: ID=0002 Rev=4 Len=100 <?>
Kernel driver in use: lan743x
But when I tried iperf i was not able to reach gigabit speed
ubuntu@ubuntu-tx2:~$ iperf3 -c 192.168.137.2
Connecting to host 192.168.137.2, port 5201
[ 4] local 192.168.137.43 port 34408 connected to 192.168.137.2 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 18.0 MBytes 151 Mbits/sec 0 400 KBytes
[ 4] 1.00-2.00 sec 46.4 MBytes 389 Mbits/sec 0 1.41 KBytes
[ 4] 2.00-3.00 sec 15.4 MBytes 129 Mbits/sec 8 1.41 KBytes
[ 4] 3.00-4.00 sec 6.15 MBytes 51.6 Mbits/sec 6 325 KBytes
[ 4] 4.00-5.00 sec 82.5 MBytes 692 Mbits/sec 0 495 KBytes
[ 4] 5.00-6.00 sec 39.6 MBytes 332 Mbits/sec 24 365 KBytes
[ 4] 6.00-7.00 sec 69.6 MBytes 584 Mbits/sec 0 406 KBytes
[ 4] 7.00-8.00 sec 64.8 MBytes 544 Mbits/sec 0 427 KBytes
[ 4] 8.00-9.00 sec 8.51 MBytes 71.4 Mbits/sec 2 255 KBytes
[ 4] 9.00-10.00 sec 13.5 MBytes 114 Mbits/sec 0 1.41 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 365 MBytes 306 Mbits/sec 40 sender
[ 4] 0.00-10.00 sec 362 MBytes 303 Mbits/sec receiver
iperf Done.
In another thread was a hint regarding setting PCIEASPM to Performance which I tried but it did not change the result.
Are there other suggestions to speed up the througput of the network card that i could try ?