Marvell OCTEON TX2 and OCTEON 10 CPT cryptographic accelerators
Controls the on-chip Cryptographic Processing Tunnel (CPT) accelerator built into Marvell's OCTEON TX2 and OCTEON 10 infrastructure processors and DPUs, offloading bulk symmetric crypto and public-key operations for networking and security appliances. These chips power current routers, firewalls, SmartNICs, and 5G infrastructure gear that Marvell continues to ship in 2025.
recommendation
It should stay in the kernel because the hardware is current Marvell silicon still being sold and marketed in 2025, and the code is under active development. Recent lore traffic shows both bug fixes landing into 2026 and new feature work from Marvell engineers in late 2025, and there is no alternative upstream driver for this on-die crypto block.
repository signals
sources
- lore.kernel.org
Upstream maintenance is active through at least April 14, 2026, with a functional bug fix for otx2_cptpf_probe().
- lore.kernel.org
The driver saw feature-development work in late 2025, not just janitorial fixes, including sharing engine-group info with the AF driver.
- marvell.com
Marvell still markets OCTEON TX2 DPUs and OCTEON 10 DPUs, describing integrated hardware security/crypto acceleration for current infrastructure deployments.
- marvell.com
A Marvell CN913X OCTEON TX2 product brief published in late 2025 shows the family was still being actively marketed with security/public-key acceleration.
- cateee.net
LKDDb maps CONFIG_CRYPTO_DEV_OCTEONTX2_CPT to Marvell OcteonTX2 CPT hardware and shows recognized PCI IDs including Octeon 10 CPT PF/VF devices.
codex reasoning notes (technical)
Real PCI crypto driver, not a helper library. `lore_file_timeline` on `otx2_cptpf_main.c` showed dense activity from 2021-2026 and recent fixes/features, with no removal evidence in the sampled history; cited lore URLs came directly from that MCP result. Marvell product URLs were obtained by web search and indicate ongoing 2025-era marketing of OCTEON TX2/OCTEON 10 security-capable DPUs, so hardware is not obsolete. LKDDb URL was obtained by web search and confirms the driver covers OcteonTX2 plus Octeon 10 CPT IDs. No natural upstream replacement driver exists for this hardware-specific CPT block, so the correct disposition is keep.