1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * include/net/dsa_stubs.h - Stubs for the Distributed Switch Architecture framework
6 #include <linux/mutex.h>
7 #include <linux/netdevice.h>
8 #include <linux/net_tstamp.h>
11 #if IS_ENABLED(CONFIG_NET_DSA)
13 extern const struct dsa_stubs
*dsa_stubs
;
16 int (*conduit_hwtstamp_validate
)(struct net_device
*dev
,
17 const struct kernel_hwtstamp_config
*config
,
18 struct netlink_ext_ack
*extack
);
21 static inline int dsa_conduit_hwtstamp_validate(struct net_device
*dev
,
22 const struct kernel_hwtstamp_config
*config
,
23 struct netlink_ext_ack
*extack
)
25 if (!netdev_uses_dsa(dev
))
28 /* rtnl_lock() is a sufficient guarantee, because as long as
29 * netdev_uses_dsa() returns true, the dsa_core module is still
30 * registered, and so, dsa_unregister_stubs() couldn't have run.
31 * For netdev_uses_dsa() to start returning false, it would imply that
32 * dsa_conduit_teardown() has executed, which requires rtnl_lock().
36 return dsa_stubs
->conduit_hwtstamp_validate(dev
, config
, extack
);
41 static inline int dsa_conduit_hwtstamp_validate(struct net_device
*dev
,
42 const struct kernel_hwtstamp_config
*config
,
43 struct netlink_ext_ack
*extack
)