xprt_request_transmit(9)

💌 xprt_request_transmit — the Kernel API Manual moment

okay so this is xprt_request_transmit(9) from the Kernel API Manual, and yes bestie we're getting into RPC transport internals today, strap in 🎀

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✨ NAME ✨

xprt_request_transmit — send an RPC request on a transport 💅

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🌸 SYNOPSIS 🌸

int xprt_request_transmit (struct rpc_rqst *req , struct rpc_task
*snd_task );

literally that's the whole signature, no cap ✨

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🦋 ARGUMENTS 🦋

• req — pointer to the request you wanna transmit 🫶
• snd_task — the RPC task that owns the transport lock, like it's holding the aux cord and nobody else gets to touch it 🔥

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💖 DESCRIPTION 💖

okay so picture this: this function performs the transmission of a single request. one (1) request. main character energy, no group chat 🎀

⚠️ important note bestie: if the request is not the same as snd_task, then it does need to be pinned. like actually. don't skip that part 🙈

and the slay of it all? it returns '0' on success 💅 periodt.

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👑 SEE ALSO 👑

so you wanna go deeper?? honestly same. the kernel file is ./net/sunrpc/xprt.c and here's the whole friend group 🫶:

• xprt_register_transport(9)
• xprt_unregister_transport(9)
• xprt_find_transport_ident(9)
• xprt_reserve_xprt(9)
• xprt_release_xprt(9)
• xprt_release_xprt_cong(9)
• xprt_request_get_cong(9)
• xprt_release_rqst_cong(9)
• xprt_adjust_cwnd(9)
• xprt_wake_pending_tasks(9)
• xprt_wait_for_buffer_space(9)
• xprt_write_space(9)
• xprt_adjust_timeout(9)
• xprt_disconnect_done(9)
• xprt_schedule_autoclose_locked(9)
• xprt_force_disconnect(9)
• xprt_conditional_disconnect(9)
• xprt_connect(9)
• xprt_reconnect_delay(9)
• xprt_reconnect_backoff(9)
• xprt_lookup_rqst(9)
• xprt_pin_rqst(9)
• xprt_unpin_rqst(9)
• xprt_request_enqueue_receive(9)
• xprt_request_dequeue_receive_locked(9)
• xprt_update_rtt(9)
• xprt_complete_rqst(9)
• xprt_wait_for_reply_request_def(9)
• xprt_wait_for_reply_request_rtt(9)
• xprt_request_wait_receive(9)
• xprt_request_enqueue_transmit(9)
• xprt_request_dequeue_transmit_locked(9)
• xprt_request_dequeue_transmit(9)
• xprt_request_dequeue_xprt(9)
• xprt_request_prepare(9)
• xprt_request_need_retransmit(9)
• xprt_prepare_transmit(9)
• xprt_transmit(9)
• xprt_add_backlog_noncongested(9)
• xprt_reserve(9)
• xprt_retry_reserve(9)
• xprt_release(9)
• xprt_create_transport(9)
• xprt_destroy(9)
• xprt_get(9)
• xprt_put(9)

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that's it, that's the page, go read xprt.c and live your truth 💜

mwah 💋 — this one's filed under ./net/sunrpc, Kernel API Manual edition dated October 2026, xprt_request_transmit(9) and out 🎀✨