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* [dpdk-users] Garbage value is returned while reading moudle eeprom for i40e (PF) with DPDK 18.11
@ 2020-03-14 15:56 Anubhav Choudhary
  0 siblings, 0 replies; only message in thread
From: Anubhav Choudhary @ 2020-03-14 15:56 UTC (permalink / raw)
  To: dev, users

Hi,
I am using Intel X710 along with FINISAR module (FTLX1471D3BCL). I am trying to read the module's eeprom but I am getting garbage values when DPDK is used. However, it is working perfectly fine when device is bound to the linux kernel. I have attached the device details along with the eeprom dumps. Note that I have executed the command in a VM where Intel X710 was using pci-passthrough. Let me know if more details are required to understand the issue.

Case 1 : When device used Linux Kernel

root@test-system:/home/anubhav# ethtool -i eth2
driver: i40e
version: 2.1.14-k
firmware-version: 7.10 0x800051a6 19.0.12
expansion-rom-version:
bus-info: 0000:00:0b.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

root@test-system:/home/anubhav # ethtool -m eth2 raw on > module_eeprom_kernel.bin
root@test-system:/home/anubhav # hexdump -x -v module_eeprom_kernel.bin
0000000    0403    2007    0000    0000    0000    0600    0067    640a
0000010    0000    0000    4946    494e    4153    2052    4f43    5052
0000020    202e    2020    0000    6590    5446    584c    3431    3137
0000030    3344    4342    204c    2020    2041    2020    1e05    6300
0000040    1a00    0000    4c55    3038    3732    2056    2020    2020
0000050    2020    2020    3131    3830    3631    2020    f068    ce03
0000060    0000    0000    0000    0000    0000    0000    0000    0000
0000070    0000    0000    0000    0000    0000    0000    0000    0000
0000080    0000    0000    0000    0000    0000    0000    0000    0000
0000090    0000    0000    0000    0000    0000    0000    0000    0000
00000a0    0000    0000    0000    0000    0000    0000    0000    0000
00000b0    0000    0000    0000    0000    0000    0000    0000    0000
00000c0    0000    0000    0000    0000    0000    0000    0000    0000
00000d0    0000    0000    0000    0000    0000    0000    0000    0000
00000e0    0000    0000    0000    0000    0000    0000    0000    0000
00000f0    0000    0000    0000    0000    0000    0000    0000    0000
0000100    004e    00f3    0049    00f8    8890    4871    a08c    3075
0000110    04a6    4c1d    409c    1027    e93d    3106    2d31    cb07
0000120    7745    6400    e93d    9e00    0000    0000    0000    0000
0000130    0000    0000    0000    0000    0000    0000    0000    0000
0000140    0000    0000    803f    0000    0000    0000    0001    0000
0000150    0001    0000    0001    0000    0001    0000    0000    7e00
0000160    2c20    2c82    1a42    c31d    681a    0000    0000    0030
0000170    0000    0000    0000    0000    ffff    ffff    ffff    01ff
0000180    0000    0000    0000    0000    0000    0000    0000    0000
0000190    0000    0000    0000    0000    0000    0000    0000    0000
00001a0    0000    0000    0000    0000    0000    0000    0000    0000
00001b0    0000    0000    0000    0000    0000    0000    0000    0000
00001c0    0000    0000    0000    0000    0000    0000    0000    0000
00001d0    0000    0000    0000    0000    0000    0000    0000    0000
00001e0    0000    0000    0000    0000    0000    0000    0000    0000
00001f0    0000    0000    0000    0000    0000    0000    0000    0000
0000200

Case 2: When device is used with DPDK (18.11)

root@test-system:/home/anubhav# ./ethtool
EAL: Detected 92 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Probing VFIO support...
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using unreliable clock cycles !
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:00:04.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:00:0b.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:1572 net_i40e
EAL: PCI device 0000:00:0b.1 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:1572 net_i40e
Number of NICs: 2
Init port 0..
Init port 1..
EthApp> drvinfo
Port 0 driver: net_i40e (ver: DPDK 18.11.5)
firmware-version: 7.10 0x800051a6 19.0.12
bus-info: 0000:00:0b.0
Port 1 driver: net_i40e (ver: DPDK 18.11.5)
firmware-version: 7.10 0x800051a6 19.0.12
bus-info: 0000:00:0b.1
EthApp> module-eeprom 0 module_eeprom_dpdk.bin
Total plugin module EEPROM length: 512 bytes
EthApp> quit

root@test-system:/home/anubhav# hexdump -x -v module_eeprom_dpdk.bin
0000000    0404    0404    0404    0404    0404    0404    0404    0404
0000010    0404    0404    0404    0404    0404    0404    0404    0404
0000020    0404    0404    0404    0404    0404    0404    0404    0404
0000030    0404    0404    0404    0404    0404    0404    0404    0404
0000040    0404    0404    0404    0404    0404    0404    0404    0404
0000050    0404    0404    0404    0404    0404    0404    0404    0404
0000060    0404    0404    0404    0404    0404    0404    0404    0404
0000070    0404    0404    0404    0404    0404    0404    0404    0404
0000080    0404    0404    0404    0404    0404    0404    0404    0404
0000090    0404    0404    0404    0404    0404    0404    0404    0404
00000a0    0404    0404    0404    0404    0404    0404    0404    0404
00000b0    0404    0404    0404    0404    0404    0404    0404    0404
00000c0    0404    0404    0404    0404    0404    0404    0404    0404
00000d0    0404    0404    0404    0404    0404    0404    0404    0404
00000e0    0404    0404    0404    0404    0404    0404    0404    0404
00000f0    0404    0404    0404    0404    0404    0404    0404    0404
0000100    0000    0000    0000    0000    0000    0000    0000    0000
0000110    0000    0000    0000    0000    0000    0000    0000    0000
0000120    0000    0000    0000    0000    0000    0000    0000    0000
0000130    0000    0000    0000    0000    0000    0000    0000    0000
0000140    0000    0000    0000    0000    0000    0000    0000    0000
0000150    0000    0000    0000    0000    0000    0000    0000    0000
0000160    0000    0000    0000    0000    0000    0000    0000    0000
0000170    0000    0000    0000    0000    0000    0000    0000    0000
0000180    0000    0000    0000    0000    0000    0000    0000    0000
0000190    0000    0000    0000    0000    0000    0000    0000    0000
00001a0    0000    0000    0000    0000    0000    0000    0000    0000
00001b0    0000    0000    0000    0000    0000    0000    0000    0000
00001c0    0000    0000    0000    0000    0000    0000    0000    0000
00001d0    0000    0000    0000    0000    0000    0000    0000    0000
00001e0    0000    0000    0000    0000    0000    0000    0000    0000
00001f0    0000    0000    0000    0000    0000    0000    0000    0000
0000200

Regards,
Anubhav Choudhary

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2020-03-14 15:56 [dpdk-users] Garbage value is returned while reading moudle eeprom for i40e (PF) with DPDK 18.11 Anubhav Choudhary

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