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/* SPDX-License-Identifier: GPL-2.0 */
/* Microchip switch tag common header
*
* Copyright (C) 2022 Microchip Technology Inc.
*/
#ifndef _NET_DSA_KSZ_COMMON_H_
#define _NET_DSA_KSZ_COMMON_H_
#include <net/dsa.h>
/* All time stamps from the KSZ consist of 2 bits for seconds and 30 bits for
* nanoseconds. This is NOT the same as 32 bits for nanoseconds.
*/
#define KSZ_TSTAMP_SEC_MASK GENMASK(31, 30)
#define KSZ_TSTAMP_NSEC_MASK GENMASK(29, 0)
static inline ktime_t ksz_decode_tstamp(u32 tstamp)
{
u64 ns = FIELD_GET(KSZ_TSTAMP_SEC_MASK, tstamp) * NSEC_PER_SEC +
FIELD_GET(KSZ_TSTAMP_NSEC_MASK, tstamp);
return ns_to_ktime(ns);
}
struct ksz_deferred_xmit_work {
struct dsa_port *dp;
struct sk_buff *skb;
struct kthread_work work;
};
struct ksz_tagger_data {
void (*xmit_work_fn)(struct kthread_work *work);
void (*hwtstamp_set_state)(struct dsa_switch *ds, bool on);
};
struct ksz_skb_cb {
struct sk_buff *clone;
unsigned int ptp_type;
bool update_correction;
u32 tstamp;
};
#define KSZ_SKB_CB(skb) \
((struct ksz_skb_cb *)((skb)->cb))
static inline struct ksz_tagger_data *
ksz_tagger_data(struct dsa_switch *ds)
{
return ds->tagger_data;
}
#endif /* _NET_DSA_KSZ_COMMON_H_ */