1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* Microchip switch tag common header |
3 | * |
4 | * Copyright (C) 2022 Microchip Technology Inc. |
5 | */ |
6 | |
7 | #ifndef _NET_DSA_KSZ_COMMON_H_ |
8 | #define _NET_DSA_KSZ_COMMON_H_ |
9 | |
10 | #include <net/dsa.h> |
11 | |
12 | /* All time stamps from the KSZ consist of 2 bits for seconds and 30 bits for |
13 | * nanoseconds. This is NOT the same as 32 bits for nanoseconds. |
14 | */ |
15 | #define KSZ_TSTAMP_SEC_MASK GENMASK(31, 30) |
16 | #define KSZ_TSTAMP_NSEC_MASK GENMASK(29, 0) |
17 | |
18 | static inline ktime_t ksz_decode_tstamp(u32 tstamp) |
19 | { |
20 | u64 ns = FIELD_GET(KSZ_TSTAMP_SEC_MASK, tstamp) * NSEC_PER_SEC + |
21 | FIELD_GET(KSZ_TSTAMP_NSEC_MASK, tstamp); |
22 | |
23 | return ns_to_ktime(ns); |
24 | } |
25 | |
26 | struct ksz_deferred_xmit_work { |
27 | struct dsa_port *dp; |
28 | struct sk_buff *skb; |
29 | struct kthread_work work; |
30 | }; |
31 | |
32 | struct ksz_tagger_data { |
33 | void (*xmit_work_fn)(struct kthread_work *work); |
34 | void (*hwtstamp_set_state)(struct dsa_switch *ds, bool on); |
35 | }; |
36 | |
37 | struct ksz_skb_cb { |
38 | struct sk_buff *clone; |
39 | unsigned int ptp_type; |
40 | bool update_correction; |
41 | u32 tstamp; |
42 | }; |
43 | |
44 | #define KSZ_SKB_CB(skb) \ |
45 | ((struct ksz_skb_cb *)((skb)->cb)) |
46 | |
47 | static inline struct ksz_tagger_data * |
48 | ksz_tagger_data(struct dsa_switch *ds) |
49 | { |
50 | return ds->tagger_data; |
51 | } |
52 | |
53 | #endif /* _NET_DSA_KSZ_COMMON_H_ */ |
54 | |