rpc_peeraddr(9)

💅 rpc_peeraddr — a Kernel API Manual moment (section 9, bestie)

okay so first of all, this whole page lives in the Kernel API Manual, section 9 — very "kernel devs only" of it, we love that for them 🎀

✨ NAME ✨

rpc_peeraddr — extract remote peer address from clnt's xprt

like literally just... get the remote peer's address out of the clnt's xprt. that's the whole vibe. 🦋

✨ SYNOPSIS ✨

size_t rpc_peeraddr (struct rpc_clnt *clnt , struct sockaddr *buf ,
       size_t bufsize );

✨ ARGUMENTS ✨

• clnt — the RPC client structure, the main character of this function ngl 👑
• buf — target buffer. it's giving "put the address here please" 🎯
• bufsize — length of that target buffer. yes bestie, it needs to know how much room it has 🙈

✨ DESCRIPTION ✨

so the function returns the number of bytes that are actually in the stored address ✨ not the size of the buffer, not a guess, the real byte count. iconic honestly.

✨ SEE ALSO ✨

heads up, this all lives in the kernel file ./net/sunrpc/clnt.c, and here's the whole friend group 💖

• rpc_create(9)
• rpc_clone_client(9)
• rpc_clone_client_set_auth(9)
• rpc_switch_client_transport(9)
• rpc_clnt_iterate_for_each_xprt(9)
• rpc_cancel_tasks(9)
• rpc_hold_client(9)
• rpc_release_client(9)
• rpc_bind_new_program(9)
• rpc_run_task(9)
• rpc_call_sync(9)
• rpc_call_async(9)
• rpc_run_bc_task(9)
• rpc_prepare_reply_pages(9)
• rpc_peeraddr2str(9)
• rpc_localaddr(9)
• rpc_net_ns(9)
• rpc_max_payload(9)
• rpc_max_bc_payload(9)
• rpc_force_rebind(9)
• rpc_clnt_test_and_add_xprt(9)
• rpc_clnt_setup_test_and_add_xprt(9)
• rpc_clnt_add_xprt(9)

and that's the whole page, bestie 🫶 written from ./net/sunrpc with a date stamp of October 2026 — slay, go read the rest of section 9, i'm obsessed 💅✨