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doca-rdma

RDMA data movement on NVIDIA BlueField/ConnectX NICs (RoCE/InfiniBand) with DOCA RDMA, instead of hand-written libibverbs/rdma_cm. Use when the user moves data between processes or hosts over the NIC, or hits "one-sided read returns permission denied", "completions never arrive after submit", "connection callback never fires", atomic compare-and-swap over RoCE, or DOCA_ERROR_FULL on the send queue under burst, even without naming DOCA RDMA. Covers bringing up an RDMA context on a doca_dev, connection methods (RDMA CM, bridge/OOB, or gRPC exchange of doca_rdma_export()), the eleven task types (Send/Receive/Send-Imm, Read/Write/Write-Imm, Atomic CmpSwap/FetchAdd, Get/Set/Add Remote Sync Event), matching mmap + RDMA permissions, queue and connection sizing, doca_rdma_cap_* queries, and DOCA_ERROR_* from RDMA calls. Raw QP/verbs control belongs to doca-verbs. Refuse and route elsewhere for general RDMA / ibverbs theory (queue pairs, MRs, RoCE vs IB), installing DOCA itself, or non-RDMA DOCA libraries.

skills/doca-rdma/SKILL.md

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# DOCA RDMA

## Examples

- **"Completions never arrive after submit."** — stay on the DOCA
  RDMA task and progress-engine path. Do not rewrite it as raw verbs.
- **"One-sided read returns permission denied."** — check mmap +
  RDMA permissions and `doca_rdma_cap_*` before changing the task
  type.

## Instructions

Follow Loading order below. Open the tasks companion for configure /
build / run. Open the capabilities companion for the task taxonomy