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mctp: Add test utils

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Add a new object for shared test utilities

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jeremy Kerr 2021-10-03 11:17:05 +08:00 committed by David S. Miller
parent 161eba50e1
commit ded21b7229
3 changed files with 90 additions and 0 deletions
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3
net/mctp/Makefile
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@ -1,3 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_MCTP) += mctp.o
mctp-objs := af_mctp.o device.o route.o neigh.o
# tests
obj-$(CONFIG_MCTP_TEST) += test/utils.o

67
net/mctp/test/utils.c Normal file
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@ -0,0 +1,67 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/netdevice.h>
#include <linux/mctp.h>
#include <linux/if_arp.h>
#include <net/mctpdevice.h>
#include <net/pkt_sched.h>
#include "utils.h"
static netdev_tx_t mctp_test_dev_tx(struct sk_buff *skb,
struct net_device *ndev)
{
kfree(skb);
return NETDEV_TX_OK;
}
static const struct net_device_ops mctp_test_netdev_ops = {
.ndo_start_xmit = mctp_test_dev_tx,
};
static void mctp_test_dev_setup(struct net_device *ndev)
{
ndev->type = ARPHRD_MCTP;
ndev->mtu = MCTP_DEV_TEST_MTU;
ndev->hard_header_len = 0;
ndev->addr_len = 0;
ndev->tx_queue_len = DEFAULT_TX_QUEUE_LEN;
ndev->flags = IFF_NOARP;
ndev->netdev_ops = &mctp_test_netdev_ops;
ndev->needs_free_netdev = true;
}
struct mctp_test_dev *mctp_test_create_dev(void)
{
struct mctp_test_dev *dev;
struct net_device *ndev;
int rc;
ndev = alloc_netdev(sizeof(*dev), "mctptest%d", NET_NAME_ENUM,
mctp_test_dev_setup);
if (!ndev)
return NULL;
dev = netdev_priv(ndev);
dev->ndev = ndev;
rc = register_netdev(ndev);
if (rc) {
free_netdev(ndev);
return NULL;
}
rcu_read_lock();
dev->mdev = __mctp_dev_get(ndev);
mctp_dev_hold(dev->mdev);
rcu_read_unlock();
return dev;
}
void mctp_test_destroy_dev(struct mctp_test_dev *dev)
{
mctp_dev_put(dev->mdev);
unregister_netdev(dev->ndev);
}

20
net/mctp/test/utils.h Normal file
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@ -0,0 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_MCTP_TEST_UTILS_H
#define __NET_MCTP_TEST_UTILS_H
#include <kunit/test.h>
#define MCTP_DEV_TEST_MTU 68
struct mctp_test_dev {
struct net_device *ndev;
struct mctp_dev *mdev;
};
struct mctp_test_dev;
struct mctp_test_dev *mctp_test_create_dev(void);
void mctp_test_destroy_dev(struct mctp_test_dev *dev);
#endif /* __NET_MCTP_TEST_UTILS_H */