1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* 2 /*
3 * include/net/dsa_stubs.h - Stubs for the Dis 3 * include/net/dsa_stubs.h - Stubs for the Distributed Switch Architecture framework
4 */ 4 */
5 5
6 #include <linux/mutex.h> 6 #include <linux/mutex.h>
7 #include <linux/netdevice.h> 7 #include <linux/netdevice.h>
8 #include <linux/net_tstamp.h> 8 #include <linux/net_tstamp.h>
9 #include <net/dsa.h> 9 #include <net/dsa.h>
10 10
11 #if IS_ENABLED(CONFIG_NET_DSA) 11 #if IS_ENABLED(CONFIG_NET_DSA)
12 12
13 extern const struct dsa_stubs *dsa_stubs; 13 extern const struct dsa_stubs *dsa_stubs;
14 14
15 struct dsa_stubs { 15 struct dsa_stubs {
16 int (*conduit_hwtstamp_validate)(struc 16 int (*conduit_hwtstamp_validate)(struct net_device *dev,
17 const 17 const struct kernel_hwtstamp_config *config,
18 struc 18 struct netlink_ext_ack *extack);
19 }; 19 };
20 20
21 static inline int dsa_conduit_hwtstamp_validat 21 static inline int dsa_conduit_hwtstamp_validate(struct net_device *dev,
22 22 const struct kernel_hwtstamp_config *config,
23 23 struct netlink_ext_ack *extack)
24 { 24 {
25 if (!netdev_uses_dsa(dev)) 25 if (!netdev_uses_dsa(dev))
26 return 0; 26 return 0;
27 27
28 /* rtnl_lock() is a sufficient guarant 28 /* rtnl_lock() is a sufficient guarantee, because as long as
29 * netdev_uses_dsa() returns true, the 29 * netdev_uses_dsa() returns true, the dsa_core module is still
30 * registered, and so, dsa_unregister_ 30 * registered, and so, dsa_unregister_stubs() couldn't have run.
31 * For netdev_uses_dsa() to start retu 31 * For netdev_uses_dsa() to start returning false, it would imply that
32 * dsa_conduit_teardown() has executed 32 * dsa_conduit_teardown() has executed, which requires rtnl_lock().
33 */ 33 */
34 ASSERT_RTNL(); 34 ASSERT_RTNL();
35 35
36 return dsa_stubs->conduit_hwtstamp_val 36 return dsa_stubs->conduit_hwtstamp_validate(dev, config, extack);
37 } 37 }
38 38
39 #else 39 #else
40 40
41 static inline int dsa_conduit_hwtstamp_validat 41 static inline int dsa_conduit_hwtstamp_validate(struct net_device *dev,
42 42 const struct kernel_hwtstamp_config *config,
43 43 struct netlink_ext_ack *extack)
44 { 44 {
45 return 0; 45 return 0;
46 } 46 }
47 47
48 #endif 48 #endif
49 49
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