rxrpc_kernel_recv_data(9)

💌 rxrpc_kernel_recv_data — NAME

okay bestie, welcome to rxrpc_kernel_recv_data — the one from the Kernel API Manual, section 9, and honestly? it's giving "let a kernel service receive data/info" and nothing less. 💅

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✨ SYNOPSIS ✨

int rxrpc_kernel_recv_data (struct socket *sock , struct rxrpc_call
*call , struct iov_iter *iter , size_t *_len , bool want_more , u32
*_abort , u16 *_service );

no cap, that's the whole signature — copy it exactly, don't get cute with it 🎀

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🫶 ARGUMENTS 🫶

• sock — the socket that the call exists on, like the friend group the call belongs to
• call — the call to send data through (yes, the field is called "send" but we're receiving, that's just how it is, don't come for me 😭)
• iter — the buffer we're receiving into, i.e. where the data actually lands
• _len — the amount of data we want to receive, and heads up: it gets decreased on return (she shrinks, that's her job)
• want_more — true if more data is expected to be read
• _abort — where the abort code is stored if -ECONNABORTED is returned
• _service — where to store the actual service ID (it may be upgraded 👑)

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🌸 DESCRIPTION 🌸

so this function lets a kernel service receive data and pick up info about the state of a call, which is honestly multitasking main character energy. ✨

little note bestie: *_abort should also be initialised to 0. don't skip this, it's not a vibe to skip it. 🙈

also, and this is the part people forget: we may return -EAGAIN to drain empty packets at the end of the data, even if we've already copied over the requested data. literal "there's nothing left but I still need a sec" energy 💀

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🔥 RETURN 🔥

• 0 — got what was asked for and there's more available 🎉
• 1 — got what was asked for and we're at the end of the data 🏁
• -EAGAIN — we need more data, hold please 🧚

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🦋 SEE ALSO 🦋

• Kernel file ./net/rxrpc/recvmsg.c — go read it, iykyk 💜

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and that's the page!! 💖 this cutie lives under ./net/rxrpc, dated October 2026, and answers to the name rxrpc_kernel_recv_data(9) — periodt. 👑🌸