[PATCH v3 0/6] ethdev: add API to decode module EEPROM

[Stephen Hemminger]

On Tue, 29 Sep 2026 09:07:28 +0200
Roman Khromenok <roma55592 at yandex.ru> wrote:

> Since 22.07, ethdev contains SFF-8079, SFF-8472 and SFF-8636 decoders
> for pluggable module EEPROM (SFP, QSFP), ported from ethtool.
> They are reachable only through the telemetry command
> /ethdev/module_eeprom, which reads the EEPROM of a DPDK port
> and returns the result as a telemetry dictionary.


Applied to net-next with one addition. sff_telemetry.h and rte_telemetry.h
are include in rte_ethdev.c but no longer used.

AI also saw something you should look at:


Pre-existing, not for this series: sff_8472_calibration() applies
SFF-8472 external RX power calibration as
 
  RX_PWR(0) + x * (RX_PWR(1) + RX_PWR(2) + RX_PWR(3))
 
The spec formula is
 
  RX_PWR(4)*x^4 + RX_PWR(3)*x^3 + RX_PWR(2)*x^2 + RX_PWR(1)*x
  + RX_PWR(0)
 
SFF_A2_CAL_RXPWR4 is defined but never used. The code was carried
over from ethtool's sfpdiag.c, which has the same formula. The new
test only sets RX_PWR(1), so it does not hit this. A separate fix
would carry: