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- // SPDX-License-Identifier: GPL-2.0
- /* Multipath TCP
- *
- * Copyright (c) 2020, Tessares SA.
- * Copyright (c) 2022, SUSE.
- *
- * Author: Nicolas Rybowski <[email protected]>
- */
- #define pr_fmt(fmt) "MPTCP: " fmt
- #include <linux/bpf.h>
- #include "protocol.h"
- struct mptcp_sock *bpf_mptcp_sock_from_subflow(struct sock *sk)
- {
- if (sk && sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP && sk_is_mptcp(sk))
- return mptcp_sk(mptcp_subflow_ctx(sk)->conn);
- return NULL;
- }
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