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 ksz_decode_tstamp(u32 tstamp)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 * ksz_tagger_data(struct dsa_switch * ds)48 ksz_tagger_data(struct dsa_switch *ds) 49 { 50 return ds->tagger_data; 51 } 52 53 #endif /* _NET_DSA_KSZ_COMMON_H_ */ 54