DOCA BlueField-3 (BF3) deployment

Where to start: This skill is the bundle's home for BlueField-3 day-1 platform bring-up — taking a BF3 from "powered card in the slot" (or a card that just came back broken from a BFB push) to "Arm OS healthy, TMFIFO up, host PFs bound, four-way version match closed, ready to run a workload". It owns the classic RShim/BFB path that BF3 uses today; the newer BMC-Redfish provisioning path is the sibling skill doca-bf4-deployment (the BF4 equivalent). If the user has a BF3 and needs to push a BFB, recover a DPU that did not come back, or verify the install, open TASKS.md and start at ## configure. If the question is what shape does the BF3 platform-bring-up surface even have, start at CAPABILITIES.md. Once the BF3 is healthy, this skill routes onward to the deployment skills — running a binary goes to doca-bare-metal-deployment; deploying a service container goes to doca-container-deployment.

Every mutating burn invoked from a bring-up step — the BFB reflash itself, any mlxconfig set (including a DPU/separated-host mode flip), a firmware burn, or a kernel-boot-parameter change — is governed by the change-application meta-policy in doca-hardware-safety, which the agent loads ALONGSIDE this skill. This skill adds only the BF3-specific operational sequencing on top; it does NOT redefine the preflight / OOB-console / maintenance-window / rollback discipline that meta-policy owns.

Audience

This skill serves external DOCA operators bringing up a real BlueField-3 — i.e. people who already have:

• a physical BlueField-3 in a host (or a standalone BF3 they can reach over its console / management network),
• host-side RShim access to the DPU (the RShim userspace daemon and the /dev/rshim* character-device tree present over the PCIe or USB RShim interface), and
• a matching DOCA-Host install on the host plus a BlueField bundle (BFB) image downloaded from the public DOCA Downloads page.

It is not for:

• BlueField-4 bring-up (the BMC-Redfish provisioning path) — route to doca-bf4-deployment, the BF4 equivalent of this skill,
• kernel-driver or BlueField-OS developers contributing to mlx5_* or the BFB image itself (that is internal-tree work, not a field deployment),
• operators who already have a healthy BF3 and just want to run a binary (route to doca-bare-metal-deployment) or deploy a service container (route to doca-container-deployment),
• fresh-no-hardware users with no DOCA install — route to doca-setup ## no-install.

The skill teaches the agent the BF3 bring-up procedure and the rules for quoting documented commands from the public BlueField Platform Software Manual, the public DOCA Installation Guide, and the MFT manual via doca-public-knowledge-map; it does not invent bfb-install flag sets, BFB image filenames, RShim character-device paths, bf.cfg schema keys, mlxconfig parameter names, or TMFIFO subnets from memory. Where a fact is already vetted in doca-bare-metal-deployment ## bluefield-lifecycle, this skill reuses that exact fact rather than restating a new one.

When to load this skill

Load this skill when the user is doing hands-on BlueField-3 platform bring-up over the RShim/BFB path, or asking a cross-cutting BF3 lifecycle question that is not specific to one library's API. Concretely:

• Pushing a BFB image to a BF3 for the first time (or re-pushing after a failed install), from the host over the RShim interface with bfb-install.
• Bringing up or recovering the host-to-DPU TMFIFO management channel (tmfifo_net0, the documented 192.168.100.x convention) and the RShim console.
• Confirming RShim driver/daemon state on the host (the userspace rshim daemon and the /dev/rshim* tree) before any push or console capture.
• Deciding (and routing) a DPU-mode change — DPU / embedded-function mode vs separated-host / NIC mode — knowing the actual mlxconfig set burn leaves this skill for doca-hardware-safety.
• Recovering a BF3 that did not come back after a BFB push: bfb-install exited 0 but the DPU never reached the documented DPU is ready marker; ping 192.168.100.2 works but SSH refuses; host PFs are present in lspci -d 15b3: but their netdevs are gone.
• Verifying a BF3 install — cat /etc/mlnx-release on the Arm side, the four-way version match per doca-version — and distinguishing the host-side DOCA install from the BlueField-Arm-side DOCA install.
• Cross-cutting questions: "is DOCA on the host or on the Arm side, and which one do I install?", "my BF3 was fine last week and after a BFB push it never came back — where do I start?", "how do I tell which /dev/rshim<N> is which BlueField on a multi-DPU host?".

Do not load this skill for: BlueField-4 bring-up (route to doca-bf4-deployment, the BF4 equivalent); running a DOCA-linked binary on a healthy BF3 (route to doca-bare-metal-deployment); deploying a DOCA service container (route to doca-container-deployment); env-preparation including hugepages, IOMMU, pkg-config, and devlink mode flips (use doca-setup); the body of the version-match rule (use doca-version); or any hardware-state-changing burn itself — the change-application discipline is meta-policy owned by doca-hardware-safety, loaded ALONGSIDE this skill.

What this skill provides

This is a thin loader. Substantive material lives in two companion files:

• CAPABILITIES.md — the BF3 platform-bring-up contract: the RShim/BFB transport surface (the userspace RShim daemon, the /dev/rshim* tree, console-over-rshim, the BFB image as the unit of input), the TMFIFO management-channel surface (tmfifo_net0 / tm-br, the documented 192.168.100.x convention, the ip route get-before-ping loopback gotcha), the DPU-mode surface (DPU / embedded-function vs separated-host / NIC mode, set via mlxconfig at BFB-install time — a MUTATING burn routed to doca-hardware-safety), the host-side-vs-Arm-side DOCA install distinction, the BF3-version overlay on the four-way match owned by doca-version, the cross-cutting error taxonomy, the observability surface, and the safety policy (overlay on doca-hardware-safety).
• TASKS.md — step-by-step workflows for the in-scope BF3 lifecycle verbs: configure, build (routing stub), modify, run (the BFB-install + RShim/TMFIFO bring-up sequence), test (the post-BFB readiness smoke), debug (the six-state bluefield-state-classifier), and the Deferred task verbs block routing app-launch / container / install / library-API / hardware-state-change / BF4 questions out to their owning skills.

The skill assumes a target where:

• a BlueField-3 is physically present and powered, reachable from a host that has the RShim daemon and /dev/rshim* tree available,
• the operator has a BFB image downloaded from the public DOCA Downloads page (route via doca-public-knowledge-map), and
• the operator has an out-of-band path (BMC console, serial-over-LAN, or physical UART) to reach the BF3 if a push breaks the Arm OS.

It does not cover installing DOCA on a host from scratch (that goes through doca-setup), and it does not cover BlueField-4 (that goes through doca-bf4-deployment).

Loading order

1. Read this SKILL.md first to confirm the user's question is in scope (BF3 platform bring-up over the RShim/BFB path; NOT BF4, NOT app-launch, NOT a library-API question).
2. For the bring-up contract (RShim/BFB transport, TMFIFO channel, DPU-mode surface, host-vs-Arm install distinction, BF3-version overlay, error taxonomy, observability surface, BF3 safety overlay), see CAPABILITIES.md.
3. For step-by-step workflows — configure, build (routing stub), modify, run (BFB install + RShim/TMFIFO bring-up), test (post-BFB readiness smoke), debug (the six-state bluefield-state-classifier), plus the Deferred task verbs block — see TASKS.md.

Example questions this skill answers well

See references/details.md.

What this skill deliberately does not ship

See references/details.md.

Related skills

See references/details.md.