Guides raw-verbs programming with QP, CQ, PD, and SRQ primitives inside NVIDIA DOCA Core.
npx skills add https://github.com/NVIDIA/skills --skill doca-verbs
Please help me install this Agent Skill. Skill: doca-verbs Source: https://github.com/NVIDIA/skills/tree/main/skills/doca-verbs Command: npx skills add https://github.com/NVIDIA/skills --skill doca-verbs
Developers sometimes need low-level RDMA or Ethernet queue control that the higher-level DOCA libraries (doca-rdma, doca-eth, doca-rmax) do not expose, such as a specific work-request flag, QP attribute, SRQ option, or congestion-control group. This Skill helps an agent decide whether dropping to the raw doca-verbs API is justified, and then walks through configuring, building, porting, testing, and debugging doca_verbs_* code inside the DOCA Core lifecycle.
Ask your agent whether you need to drop to doca-verbs for a specific raw QP attribute that the doca-rdma task API does not expose, and have it walk the configure and capability-query workflow.
High-intent search queries and answers about installing and using this skill.
Use doca-verbs only when doca-rdma's task abstractions genuinely do not expose the specific verb, opcode, work-request flag, QP attribute, or SRQ option you need. The skill's first step is confirming this drop-down decision; most general RDMA send, receive, read, and write work belongs in doca-rdma.
Replace ibv_context ownership with doca_dev, build a doca_verbs_context with doca_verbs_context_create, create PD, CQ, and QP objects through the doca_verbs_* families, and drive completions through the DOCA progress engine. Mixing ibv_* and doca_verbs_* handles on the same hardware resources is unsupported.
Call doca_verbs_query_device against the active doca_devinfo and inspect the matching doca_verbs_device_attr_get_* function for the feature, such as _get_is_qp_type_supported or _get_is_ece_supported. Free the attribute handle with doca_verbs_device_attr_free afterward.
DOCA_ERROR_IO_FAILED means the work request submitted successfully but the completion reports an error. The submit return value is not the answer; you must drain the completion queue and read the CQE error field to find the actual cause.
No. Mixing libibverbs handles with doca-verbs handles on the same hardware resources is unsupported and can fail silently far from the mixing point. Port the libibverbs code fully onto doca-verbs handles and run through one library at a time.
The doca_verbs_* symbol family ships under the experimental ABI tier, so symbols may rename or reshape between DOCA releases. Only RC and UC QP types are defined, and the installed headers are the authoritative symbol surface rather than the public documentation.
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