svc_rdma_post_recvs(9)

💅 svc_rdma_post_recvs(9) — Kernel API Manual, but make it make sense

okay so bestie, welcome to the svc_rdma_post_recvs glow-up ✨ this is a kernel API manpage from the Kernel API Manual, and it's short but it's iconic.

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🌸 NAME 🌸

svc_rdma_post_recvs — post the initial set of Recv WRs 🎀 (yes, that's "Receive Work Requests", the lil' RSVPs your RDMA setup sends out so the network knows where to drop incoming data. so organized of it.)

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🦋 SYNOPSIS 🦋

bool svc_rdma_post_recvs (struct svcxprt_rdma *rdma );

it gives you back a bool, no cap. 🔥

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💜 ARGUMENTS 💜

• rdma — a fresh svcxprt_rdma. like, brand new, just-brought-into-this-world fresh. main character energy, first day of school vibes. 🎒

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✨ DESCRIPTION ✨

so what does it actually do? it posts that initial set of Recv WRs, and it tells you how it went through its return value. the vibe check:

• true — Receive Queue initialization successful. slay! 💖 the queue is up and ready to receive.
• false — memory allocation or DMA error 😭💀 something went wrong, either allocating memory or in DMA. not the moment we were hoping for.

lowkey important: those are the only two return values, and each one maps to exactly that meaning. true = Receive Queue init went successful, false = memory allocation error or DMA error. no in-between, no "maybe", periodt.

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🧚 SEE ALSO 🧚

the friend group 💅 go check out the kernel file:

./net/sunrpc/xprtrdma/svc_rdma_recvfrom.c

and the whole squad of related pages:

• svc_rdma_recv_ctxts_destroy(9)
• svc_rdma_recv_ctxt_get(9)
• svc_rdma_recv_ctxt_put(9)
• svc_rdma_release_ctxt(9)
• svc_rdma_wc_receive(9)
• svc_rdma_flush_recv_queues(9)
• xdr_count_read_segments(9)
• xdr_count_write_chunks(9)
• svc_rdma_xdr_decode_req(9)
• svc_rdma_recvfrom(9)

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and that's the whole page, bestie 🫶 this lil' beauty lives over at ./net/sunrpc/xprtrdma, dated October 2026, and it's filed under the Kernel API Manual. go forth and post those Recv WRs 👑💅