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/* SPDX-License-Identifier: GPL-2.0
* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
*/
/* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */
#ifndef _NET_DSA_SJA1105_H
#define _NET_DSA_SJA1105_H
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <linux/dsa/8021q.h>
#include <net/dsa.h>
#define ETH_P_SJA1105 ETH_P_DSA_8021Q
#define ETH_P_SJA1105_META 0x0008
#define ETH_P_SJA1110 0xdadc
#define SJA1105_DEFAULT_VLAN (VLAN_N_VID - 1)
/* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */
#define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull
#define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull
/* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */
#define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull
#define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull
/* Source and Destination MAC of follow-up meta frames.
* Whereas the choice of SMAC only affects the unique identification of the
* switch as sender of meta frames, the DMAC must be an address that is present
* in the DSA master port's multicast MAC filter.
* 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588
* over L2 use this address for some purpose already.
*/
#define SJA1105_META_SMAC 0x222222222222ull
#define SJA1105_META_DMAC 0x0180C200000Eull
enum sja1110_meta_tstamp {
SJA1110_META_TSTAMP_TX = 0,
SJA1110_META_TSTAMP_RX = 1,
};
struct sja1105_deferred_xmit_work {
struct dsa_port *dp;
struct sk_buff *skb;
struct kthread_work work;
};
/* Global tagger data */
struct sja1105_tagger_data {
/* Tagger to switch */
void (*xmit_work_fn)(struct kthread_work *work);
void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id,
enum sja1110_meta_tstamp dir, u64 tstamp);
/* Switch to tagger */
bool (*rxtstamp_get_state)(struct dsa_switch *ds);
void (*rxtstamp_set_state)(struct dsa_switch *ds, bool on);
};
struct sja1105_skb_cb {
struct sk_buff *clone;
u64 tstamp;
/* Only valid for packets cloned for 2-step TX timestamping */
u8 ts_id;
};
#define SJA1105_SKB_CB(skb) \
((struct sja1105_skb_cb *)((skb)->cb))
static inline struct sja1105_tagger_data *
sja1105_tagger_data(struct dsa_switch *ds)
{
BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 &&
ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110);
return ds->tagger_data;
}
#endif /* _NET_DSA_SJA1105_H */
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