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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utils.c (1311B)

      1// SPDX-License-Identifier: GPL-2.0
      2
      3#include <linux/netdevice.h>
      4#include <linux/mctp.h>
      5#include <linux/if_arp.h>
      6
      7#include <net/mctpdevice.h>
      8#include <net/pkt_sched.h>
      9
     10#include "utils.h"
     11
     12static netdev_tx_t mctp_test_dev_tx(struct sk_buff *skb,
     13				    struct net_device *ndev)
     14{
     15	kfree_skb(skb);
     16	return NETDEV_TX_OK;
     17}
     18
     19static const struct net_device_ops mctp_test_netdev_ops = {
     20	.ndo_start_xmit = mctp_test_dev_tx,
     21};
     22
     23static void mctp_test_dev_setup(struct net_device *ndev)
     24{
     25	ndev->type = ARPHRD_MCTP;
     26	ndev->mtu = MCTP_DEV_TEST_MTU;
     27	ndev->hard_header_len = 0;
     28	ndev->addr_len = 0;
     29	ndev->tx_queue_len = DEFAULT_TX_QUEUE_LEN;
     30	ndev->flags = IFF_NOARP;
     31	ndev->netdev_ops = &mctp_test_netdev_ops;
     32	ndev->needs_free_netdev = true;
     33}
     34
     35struct mctp_test_dev *mctp_test_create_dev(void)
     36{
     37	struct mctp_test_dev *dev;
     38	struct net_device *ndev;
     39	int rc;
     40
     41	ndev = alloc_netdev(sizeof(*dev), "mctptest%d", NET_NAME_ENUM,
     42			    mctp_test_dev_setup);
     43	if (!ndev)
     44		return NULL;
     45
     46	dev = netdev_priv(ndev);
     47	dev->ndev = ndev;
     48
     49	rc = register_netdev(ndev);
     50	if (rc) {
     51		free_netdev(ndev);
     52		return NULL;
     53	}
     54
     55	rcu_read_lock();
     56	dev->mdev = __mctp_dev_get(ndev);
     57	rcu_read_unlock();
     58
     59	return dev;
     60}
     61
     62void mctp_test_destroy_dev(struct mctp_test_dev *dev)
     63{
     64	mctp_dev_put(dev->mdev);
     65	unregister_netdev(dev->ndev);
     66}