mptcp_token_new_request(9)

🌸 NAME 🌸

okay bestie, this is the mptcp_token_new_request(9) page from the Kernel API Manual — and its whole thing is: create new key/idsn/token for subflow_request ✨

✨ SYNOPSIS ✨

int mptcp_token_new_request (struct request_sock *req );

🎀 ARGUMENTS 🎀

• req — the request socket. That’s the vibe.

💫 DESCRIPTION 💫

Okay so this function is called when a new mptcp connection is coming in. It’s literally the connection’s main-character entrance.

It creates:

• a unique token to identify the new mptcp connection,
• a secret local key,
• and the initial data sequence number (idsn).

Token, secret key, idsn — the holy trinity of the new connection, no cap. 🫶

🔥 RETURN 🔥

0 on success — slay. Periodt. 💅

🦋 SEE ALSO 🦋

The kernel file is ./net/mptcp/token.c, and the whole squad is:

• mptcp_token_new_connect(9)
• mptcp_token_accept(9)
• mptcp_token_get_sock(9)
• mptcp_token_iter_next(9)
• mptcp_token_destroy_request(9)
• mptcp_token_destroy(9)

that’s the whole page, bestie 🫶 — source/version ./net/mptcp, date October 2026, title mptcp_token_new_request(9). mwah 💋