cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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bpf.c (482B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Multipath TCP
      3 *
      4 * Copyright (c) 2020, Tessares SA.
      5 * Copyright (c) 2022, SUSE.
      6 *
      7 * Author: Nicolas Rybowski <nicolas.rybowski@tessares.net>
      8 */
      9
     10#define pr_fmt(fmt) "MPTCP: " fmt
     11
     12#include <linux/bpf.h>
     13#include "protocol.h"
     14
     15struct mptcp_sock *bpf_mptcp_sock_from_subflow(struct sock *sk)
     16{
     17	if (sk && sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP && sk_is_mptcp(sk))
     18		return mptcp_sk(mptcp_subflow_ctx(sk)->conn);
     19
     20	return NULL;
     21}