Intel Ethernet RDMA adapters (X722, E810, E823, IPU E2000)
RDMA (remote direct memory access) support for Intel's server Ethernet controllers: the X722 built into many Xeon platforms, the 100/200 GbE E810 and E823 families, and the E2000 infrastructure processing unit. It lets applications move data between machines with very low latency over iWARP or RoCEv2, widely used for storage fabrics, HPC, and AI clusters.
recommendation
It should stay in the kernel because the hardware is current Intel server silicon still being sold new, Intel is still shipping matching driver releases, and upstream maintenance is healthy with recent fixes and stable backports landing in early 2026. No replacement driver exists for these chips, so removal would strand a large installed base of Xeon servers and 100/200 GbE deployments.
repository signals
sources
- spinics.net
RDMA pull request dated 2026-03-27 says the release contains 'a chunk of irdma related items' and pulls changes up to commit e37afcb56ae0, indicating active upstream maintenance rather than removal.
- spinics.net
Stable review carried 'RDMA/irdma: Harden depth calculation functions' in late March 2026, showing recent bug-fix traffic and backport interest.
- intel.com
Intel published a current Linux RDMA driver release dated 2026-03-20 and lists supported controllers including X722, E810, and E823, which is strong evidence of ongoing vendor support and current deployments.
- intel.com
Intel's E810-CQDA2 product page shows Marketing Status 'Launched', server positioning, a current price, and RDMA capabilities (iWARP and RoCEv2), supporting that relevant hardware is still sold new.
- cateee.net
LKDDb shows CONFIG_INFINIBAND_IRDMA is present through current kernels and identifies supported hardware as IPU E2000, E810, and X722.
codex reasoning notes (technical)
Real driver directory: local shell inspection of Kconfig/main.c confirmed module code and supported device families. lore-http MCP was unavailable and `lei` was not installed, so upstream activity was established via web search results on spinics (mailing-list mirror) plus local `git log` in the kernel snapshot, which showed multiple substantive irdma fixes on 2026-03-18. Intel product/download pages were obtained via web search/open and show ongoing vendor releases and launched E810 hardware, so this is not obsolete. No natural upstream replacement driver exists for the same Intel RDMA hardware; recommendation is keep.