svc_udp_sendto(9)

💌 svc_udp_sendto — the kernel API manual, bestie edition ✨

okay so you're looking at svc_udp_sendto(9), a page from the Kernel API Manual, and honestly? it's short, it's sweet, and it does exactly one thing. let's get into it 🫶

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🌸 NAME 🌸

svc_udp_sendto — literally just send out a reply on a UDP socket 💅

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✨ SYNOPSIS ✨

int svc_udp_sendto (struct svc_rqst *rqstp );

that's it. one function, one argument, iconic behavior 🎀

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🦋 ARGUMENTS 🦋

• rqstp — a completed svc_rqst. like, it's done, it's finished, it's ready to go out into the world. no half-baked requests here, bestie ✋

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💖 DESCRIPTION 💖

so the way this works: xpt_mutex is the main character here 🔥 it makes sure that rqstp's whole message gets written to the socket without interruption. no cutting in, no splicing, no drama — the entire message lands as one unit, periodt.

and what does it give you back? the number of bytes sent 💫 or, if things went sideways, a negative errno. that's the vibe check you get on return, ngl.

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👑 SEE ALSO 👑

these are the besties in the group chat, all hanging out in the Kernel file ./net/sunrpc/svcsock.c:

• svc_tcp_release_ctxt(9)
• svc_udp_release_ctxt(9)
• svc_tcp_handshake_done(9)
• svc_tcp_handshake(9)
• svc_udp_recvfrom(9)
• svc_tcp_recvfrom(9)
• svc_tcp_sendto(9)
• svc_addsock(9)

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ngl this page is short but it ate. send your whole message, get your bytes back, keep your errno in check. slay 🍓

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and that's a wrap, babe 🧚 this one came to you from ./net/sunrpc, dated October 2026, and it's filed under svc_udp_sendto(9) — go be great, and may all your sockets be uninterrupted 💜