svc_rdma_rw_ctx_init(9)

📦 version 7.3.1, in nixpkgs unstable

okay bestie, welcome to the svc_rdma_rw_ctx_init(9) page from the Kernel API Manual ✨ this one is short but it’s literally the “Prepare a R/W context for I/O” moment, so let’s get into it 💅

🎀 NAME 🎀

svc_rdma_rw_ctx_init — Prepare a R/W context for I/O 🫶

🌸 SYNOPSIS 🌸

int svc_rdma_rw_ctx_init (struct svcxprt_rdma *rdma , struct
       svc_rdma_rw_ctxt *ctxt , u64 offset , u32 handle , unsigned int length ,
       enum dma_data_direction direction );

✨ ARGUMENTS ✨

Here’s the whole crew — every single one matters:

  • rdma — controlling transport instance 👑
  • ctxt — R/W context to prepare 🎀
  • offset — RDMA offset
  • handle — RDMA tag/handle
  • length — total number of bytes in the bvec array
  • direction — I/O direction

🔥 DESCRIPTION 🔥

The return value is the whole plot: on success, it returns the number of WQEs that will be needed on the workqueue, or a negative errno 💀

🦋 SEE ALSO 🦋

Kernel file: ./net/sunrpc/xprtrdma/svc_rdma_rw.c

bye bestie 🫶 — source/version: ./net/sunrpc/xprtrdma · date: October 2026 · page: svc_rdma_rw_ctx_init(9) 💖

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