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net: mctp: test: Add an addressed device constructor

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Upcoming tests will check semantics of hardware addressing, which
require a dev with ->addr_len != 0. Add a constructor to create a
MCTP interface using a physically-addressed bus type.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20250702-dev-forwarding-v5-5-1468191da8a4@codeconstruct.com.au
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jeremy Kerr
2025-07-02 14:20:05 +08:00
committed by Paolo Abeni
parent 3007f90ec0
commit 96b341a8e7
2 changed files with 25 additions and 2 deletions
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20
net/mctp/test/utils.c
View File

@@ -26,19 +26,22 @@ 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)
static struct mctp_test_dev *__mctp_test_create_dev(unsigned short lladdr_len,
const unsigned char *lladdr)
{
struct mctp_test_dev *dev;
struct net_device *ndev;
int rc;
if (WARN_ON(lladdr_len > MAX_ADDR_LEN))
return NULL;
ndev = alloc_netdev(sizeof(*dev), "mctptest%d", NET_NAME_ENUM,
mctp_test_dev_setup);
if (!ndev)
@@ -46,6 +49,8 @@ struct mctp_test_dev *mctp_test_create_dev(void)
dev = netdev_priv(ndev);
dev->ndev = ndev;
ndev->addr_len = lladdr_len;
dev_addr_set(ndev, lladdr);
rc = register_netdev(ndev);
if (rc) {
@@ -61,6 +66,17 @@ struct mctp_test_dev *mctp_test_create_dev(void)
return dev;
}
struct mctp_test_dev *mctp_test_create_dev(void)
{
return __mctp_test_create_dev(0, NULL);
}
struct mctp_test_dev *mctp_test_create_dev_lladdr(unsigned short lladdr_len,
const unsigned char *lladdr)
{
return __mctp_test_create_dev(lladdr_len, lladdr);
}
void mctp_test_destroy_dev(struct mctp_test_dev *dev)
{
mctp_dev_put(dev->mdev);

7
net/mctp/test/utils.h
View File

@@ -3,6 +3,8 @@
#ifndef __NET_MCTP_TEST_UTILS_H
#define __NET_MCTP_TEST_UTILS_H
#include <uapi/linux/netdevice.h>
#include <kunit/test.h>
#define MCTP_DEV_TEST_MTU 68
@@ -10,11 +12,16 @@
struct mctp_test_dev {
struct net_device *ndev;
struct mctp_dev *mdev;
unsigned short lladdr_len;
unsigned char lladdr[MAX_ADDR_LEN];
};
struct mctp_test_dev;
struct mctp_test_dev *mctp_test_create_dev(void);
struct mctp_test_dev *mctp_test_create_dev_lladdr(unsigned short lladdr_len,
const unsigned char *lladdr);
void mctp_test_destroy_dev(struct mctp_test_dev *dev);
#endif /* __NET_MCTP_TEST_UTILS_H */