1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Stubs for the Network PHY library
4 */
5
6 #include <linux/rtnetlink.h>
7
8 struct kernel_hwtstamp_config;
9 struct netlink_ext_ack;
10 struct phy_device;
11
12 #if IS_ENABLED(CONFIG_PHYLIB)
13
14 extern const struct phylib_stubs *phylib_stubs;
15
16 struct phylib_stubs {
17 int (*hwtstamp_get)(struct phy_device *phydev,
18 struct kernel_hwtstamp_config *config);
19 int (*hwtstamp_set)(struct phy_device *phydev,
20 struct kernel_hwtstamp_config *config,
21 struct netlink_ext_ack *extack);
22 };
23
24 static inline int phy_hwtstamp_get(struct phy_device *phydev,
25 struct kernel_hwtstamp_config *config)
26 {
27 /* phylib_register_stubs() and phylib_unregister_stubs()
28 * also run under rtnl_lock().
29 */
30 ASSERT_RTNL();
31
32 if (!phylib_stubs)
33 return -EOPNOTSUPP;
34
35 return phylib_stubs->hwtstamp_get(phydev, config);
36 }
37
38 static inline int phy_hwtstamp_set(struct phy_device *phydev,
39 struct kernel_hwtstamp_config *config,
40 struct netlink_ext_ack *extack)
41 {
42 /* phylib_register_stubs() and phylib_unregister_stubs()
43 * also run under rtnl_lock().
44 */
45 ASSERT_RTNL();
46
47 if (!phylib_stubs)
48 return -EOPNOTSUPP;
49
50 return phylib_stubs->hwtstamp_set(phydev, config, extack);
51 }
52
53 #else
54
55 static inline int phy_hwtstamp_get(struct phy_device *phydev,
56 struct kernel_hwtstamp_config *config)
57 {
58 return -EOPNOTSUPP;
59 }
60
61 static inline int phy_hwtstamp_set(struct phy_device *phydev,
62 struct kernel_hwtstamp_config *config,
63 struct netlink_ext_ack *extack)
64 {
65 return -EOPNOTSUPP;
66 }
67
68 #endif
69
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