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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sch_blackhole.c (924B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * net/sched/sch_blackhole.c	Black hole queue
      4 *
      5 * Authors:	Thomas Graf <tgraf@suug.ch>
      6 *
      7 * Note: Quantum tunneling is not supported.
      8 */
      9
     10#include <linux/init.h>
     11#include <linux/types.h>
     12#include <linux/kernel.h>
     13#include <linux/skbuff.h>
     14#include <net/pkt_sched.h>
     15
     16static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch,
     17			     struct sk_buff **to_free)
     18{
     19	qdisc_drop(skb, sch, to_free);
     20	return NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
     21}
     22
     23static struct sk_buff *blackhole_dequeue(struct Qdisc *sch)
     24{
     25	return NULL;
     26}
     27
     28static struct Qdisc_ops blackhole_qdisc_ops __read_mostly = {
     29	.id		= "blackhole",
     30	.priv_size	= 0,
     31	.enqueue	= blackhole_enqueue,
     32	.dequeue	= blackhole_dequeue,
     33	.peek		= blackhole_dequeue,
     34	.owner		= THIS_MODULE,
     35};
     36
     37static int __init blackhole_init(void)
     38{
     39	return register_qdisc(&blackhole_qdisc_ops);
     40}
     41device_initcall(blackhole_init)