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// SPDX-License-Identifier: GPL-2.0
/* Multipath TCP
*
* Copyright (c) 2020, Tessares SA.
* Copyright (c) 2022, SUSE.
*
* Author: Nicolas Rybowski <nicolas.rybowski@tessares.net>
*/
#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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