frwr_wc_fastreg(9)

💅 frwr_wc_fastreg — Kernel API Manual ✨

okay so bestie, we're diving into the kernel API manual for frwr_wc_fastreg(9) and honestly? it's a little one, but it matters. stay with me 🫶

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🌸 NAME 🌸

frwr_wc_fastreg — literally the callback that gets invoked by the RDMA provider for a flushed FastReg WC. that's the whole vibe. no cap.

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✨ SYNOPSIS ✨

void frwr_wc_fastreg (struct ib_cq *cq , struct ib_wc *wc );

like, that's it. two args, void return, iconic behavior 💅

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🎀 ARGUMENTS 🎀

• cq — the completion queue. yes queen, that CQ 👑
• wc — the WCE for a completed FastReg WR. the work completion entry, fr fr 🦋

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💖 DESCRIPTION 💖

so here's the tea ☕ — each flushed MR gets destroyed after the QP has drained. that's the entire description and honestly it's giving "short but load-bearing" 💀

like, no extra lore, no side quests. flushed MR → destroyed → but only after the QP has drained. periodt. 🔥

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🌈 SEE ALSO 🌈

the kernel file lives at ./net/sunrpc/xprtrdma/frwr_ops.c btw, and you're gonna wanna know the whole friend group 👯‍♀️:

• frwr_mr_release(9)
• frwr_reset(9)
• frwr_mr_init(9)
• frwr_query_device(9)
• frwr_map(9)
• frwr_send(9)
• frwr_reminv(9)
• frwr_wc_localinv(9)
• frwr_wc_localinv_wake(9)
• frwr_unmap_sync(9)
• frwr_wc_localinv_done(9)
• frwr_unmap_async(9)
• frwr_wp_create(9)

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ngl this page is short enough to read in the group chat between classes, so no excuses bestie 😭💜

and that's a wrap! this cutie came from ./net/sunrpc/xprtrdma, dated October 2026, and it's filed under frwr_wc_fastreg(9) — slay, go read the rest of the frwr gang now 🧚‍♀️⭐🍓