rxrpc_kernel_lookup_peer(9)

💅 rxrpc_kernel_lookup_peer — bestie's guide to finding your peer

Okay so this one is from the Kernel API Manual (yes, the kernel has lore) and it's literally called rxrpc_kernel_lookup_peer(9). Girl, the name is a mouthful but the vibe is simple: you got an address, you want the remote transport endpoint that goes with it. Let's go 🎀

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✨ SYNOPSIS ✨

struct rxrpc_peer * rxrpc_kernel_lookup_peer (struct socket *sock ,
struct sockaddr_rxrpc *srx , gfp_t gfp );

That's the whole sentence, no cap — three args, returns a struct rxrpc_peer *. 🌸

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🫶 ARGUMENTS 🫶

• sock — the socket you're gonna access it through. Like, that's the doorway, okay? 🚪
• srx — the network address. The actual address-address. This is what we're looking up, bestie. 📍
• gfp — the allocation flags. The whole "how am I allowed to grab memory for this" situation. 🧚

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💖 DESCRIPTION 💖

So what it does: it looks up or creates a remote transport endpoint record for the address you specified. That's it. That's the whole function. Lookup, or create if it's not already there — main character behaviour honestly. 👑

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⭐ RETURN ⭐

You get back the peer record you found, holding a reference — 🔥 — or a negative error code if the address is invalid or unsupported. So do the vibe check on your return value, please, don't just assume it worked 😭

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🦋 SEE ALSO 🦋

Kernel file ./net/rxrpc/af_rxrpc.c and the whole friend group:

• rxrpc_kernel_get_peer(9)
• rxrpc_kernel_put_peer(9)
• rxrpc_kernel_begin_call(9)
• rxrpc_kernel_shutdown_call(9)
• rxrpc_kernel_put_call(9)
• rxrpc_kernel_check_life(9)
• rxrpc_kernel_set_notifications(9)

iykyk 💜

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Okay that's the page!! This one lives in ./net/rxrpc, dated October 2026 — so yes, technically the future, slay. Go look up those peers, bestie, and remember: reference counted means you gotta put it back 🫶✨💅