tls_handshake_cancel(9)

hiii bestie!! welcome to tls_handshake_cancel(9) from the Kernel API Manual 💖 this one is short and iconic, so let’s get into it.

✨ NAME ✨

• tls_handshake_cancel — cancel a pending handshake 💅

🎀 SYNOPSIS 🎀

bool tls_handshake_cancel (struct sock *sk );

🫶 ARGUMENTS 🫶

• sk — socket on which there is an ongoing handshake 🦋

💜 DESCRIPTION 💜

okay so the vibe is: request cancellation races with request completion 😭 like, both things can be happening, and you need to know who won. To determine who won, callers examine the return value from this function. periodt.

Return values, bestie:

• true — Uncompleted handshake request was canceled ✨
• false — Handshake request already completed or not found 💀

🌈 CONTEXT 🌈

May be called from process or softirq context. no cap 🫶

👑 SEE ALSO 👑

Kernel file ./net/handshake/tlshd.c is the home base, and these linked besties are right here:

• tls_handshake_done(9)
• tls_handshake_accept(9)
• tls_client_hello_anon(9)
• tls_client_hello_x509(9)
• tls_client_hello_psk(9)
• tls_server_hello_x509(9)
• tls_server_hello_psk(9)
• tls_handshake_close(9)

mwah 💋 that’s the whole page. source/version: ./net/handshake, date: October 2026 — catch u later, bestie! 💖🦋