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}