rpcrdma_reset_cwnd(9)

💅 rpcrdma_reset_cwnd(9) 💅

okay so this is a page from the Kernel API Manual, bestie, and it's about one tiny function that does one tiny thing but like... an important tiny thing, y'know? 🎀

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✨ NAME ✨

rpcrdma_reset_cwnd — reset the xprt's congestion window 🦋

like, that's literally it. that's the whole job. resetting the congestion window. slay.

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🌸 SYNOPSIS 🌸

void rpcrdma_reset_cwnd (struct rpcrdma_xprt *r_xprt );

no return value, no drama, it just goes in and does the thing 💜

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🫶 ARGUMENTS 🫶

• r_xprt — the controlling transport instance. like, this is the one that's in charge, the main character of this whole operation 👑

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🧚 DESCRIPTION 🧚

so here's the vibe: this function prepares r_xprt for the next connection by reinitializing its credit grant to one. one! a single credit! iconic minimalism honestly.

and if you're sitting there like "bestie, why one?" — the manual points you at RFC 8166, Section 3.3.3, so go read that, iykyk 📖✨

no cap, that's the entire description. it's a small function with a small job and it does it flawlessly.

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🔥 SEE ALSO 🔥

Kernel file ./net/sunrpc/xprtrdma/rpc_rdma.c — that's where the magic lives, go look 🍓

• rpcrdma_set_max_header_sizes(9)
• rpcrdma_sendctx_unmap(9)
• rpcrdma_prepare_send_sges(9)
• rpcrdma_marshal_req(9)
• rpcrdma_inline_fixup(9)
• rpcrdma_unpin_rqst(9)
• rpcrdma_complete_rqst(9)
• rpcrdma_reply_handler(9)

like a whole little friend group of rpcrdma functions, and honestly? obsessed. go read them all, they're all valid 💖

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ngl this one is short but it's doing exactly what it says on the tin, and there's nothing more attractive than a function that's honest about itself 💅

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and that's the whole page!! brought to you straight out of ./net/sunrpc/xprtrdma, dated October 2026 — screenshot it, frame it, put it on your wall, it's giving kernel lore 🌈⭐💜