Dennis HilkLinux diagnosticsDE

Ethernet & networking

Broadcom BCM57414 NetXtreme-E

The BCM57414 NetXtreme-E physical function is handled by bnxt_en. Its source board description spans 10/25-gigabit Ethernet, but current link speed still comes from negotiation and the installed media.

Editorial source review: Share public profileOpen in the identification tool
On this page
  1. Overview & identity
  2. Driver & binding
  3. Firmware
  4. Read-only diagnostics
  5. Limitations & related issues
  6. References

Overview & identity

16d7 is the BCM57414 table entry. The same driver contains separate NPAR identities, so this exact physical-function pair must not be treated as a complete description of every partition.

Curated identifiers
pci 14e4:16d7

A numeric match establishes a candidate family within the reviewed evidence. Marketing names, board variants, subsystem conditions and successful operation remain separate questions.

Driver & binding

bnxt_en supplies Ethernet operation; additional RDMA support is a separate layer. A loaded core network driver does not demonstrate that a desired RDMA configuration exists or is working.

  • bnxt_en — kernel driver/module candidate

Detected, bound, operational: learn the difference

Firmware

Device/revision dependent

This profile does not establish an external firmware filename. Adapter firmware reported by the driver, its API compatibility and OEM provisioning are distinct from installing a generic OS firmware bundle.

Inspect firmware packaging on your distribution

Read-only diagnostics

Run one displayed command at a time. Replace uppercase placeholders with the affected device, interface or module from your own output. Commands are never executed here. Read-only output can still contain private identifiers.

Check the PCI function and bound driver

lspci -nnk -s BDF

Replace BDF with the domain:bus:device.function address. Look for [14e4:16d7] and Kernel driver in use. bnxt_en in Kernel modules is only a candidate, not proof of binding.

Identify the network interface driver

ethtool -i INTERFACE

Replace INTERFACE with the real interface name. Driver and bus-info connect this interface to its device. A displayed firmware-version is adapter information; it does not prove a file was loaded. Candidate: bnxt_en.

Compare supported modes with the current link

ethtool INTERFACE

Supported/advertised link modes describe capability or negotiation offers. Speed, Duplex and Link detected describe the current link, not measured throughput. An unsupported query is a limitation of the interface/driver.

Separate PCIe transport from Ethernet speed

sudo lspci -vv -s BDF

Elevated access may be needed. Root can expose the full PCI configuration. If PCIe capabilities exist, compare LnkCap with LnkSta: maximum and negotiated PCIe speed/width are different from Ethernet speed. Legacy PCI or virtual functions may omit these fields.

Limitations & related issues

Do not map every Broadcom link failure to tg3 firmware advice. Firmware/API negotiation, port partitions and the media path need the exact bnxt_en startup messages and adapter context.

These guides are linked for relevant observations, not as known defects of every device in this family.

Choose a hardware diagnostic workflow · Inspect a log excerpt in Fix Lab

References

Source review records a checked implementation or document, not a reproduced hardware test. Version-specific tables do not establish a minimum kernel or guaranteed operation.