1 /* SPDX-License-Identifier: GPL-2.0
2 * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
5 /* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */
7 #ifndef _NET_DSA_SJA1105_H
8 #define _NET_DSA_SJA1105_H
10 #include <linux/skbuff.h>
11 #include <linux/etherdevice.h>
12 #include <linux/dsa/8021q.h>
15 #define ETH_P_SJA1105 ETH_P_DSA_8021Q
16 #define ETH_P_SJA1105_META 0x0008
17 #define ETH_P_SJA1110 0xdadc
19 #define SJA1105_DEFAULT_VLAN (VLAN_N_VID - 1)
21 /* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */
22 #define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull
23 #define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull
24 /* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */
25 #define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull
26 #define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull
28 /* Source and Destination MAC of follow-up meta frames.
29 * Whereas the choice of SMAC only affects the unique identification of the
30 * switch as sender of meta frames, the DMAC must be an address that is present
31 * in the DSA master port's multicast MAC filter.
32 * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588
33 * over L2 use this address for some purpose already.
35 #define SJA1105_META_SMAC 0x222222222222ull
36 #define SJA1105_META_DMAC 0x0180C200000Eull
38 #define SJA1105_HWTS_RX_EN 0
40 /* Global tagger data: each struct sja1105_port has a reference to
41 * the structure defined in struct sja1105_private.
43 struct sja1105_tagger_data {
44 struct sk_buff *stampable_skb;
45 /* Protects concurrent access to the meta state machine
46 * from taggers running on multiple ports on SMP systems
53 struct sja1105_skb_cb {
54 struct sk_buff *clone;
56 /* Only valid for packets cloned for 2-step TX timestamping */
60 #define SJA1105_SKB_CB(skb) \
61 ((struct sja1105_skb_cb *)((skb)->cb))
64 struct kthread_worker *xmit_worker;
65 struct kthread_work xmit_work;
66 struct sk_buff_head xmit_queue;
67 struct sja1105_tagger_data *data;
72 enum sja1110_meta_tstamp {
73 SJA1110_META_TSTAMP_TX = 0,
74 SJA1110_META_TSTAMP_RX = 1,
77 #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP)
79 void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, u8 ts_id,
80 enum sja1110_meta_tstamp dir, u64 tstamp);
84 static inline void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port,
85 u8 ts_id, enum sja1110_meta_tstamp dir,
90 #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) */
92 #if IS_ENABLED(CONFIG_NET_DSA_SJA1105)
94 extern const struct dsa_switch_ops sja1105_switch_ops;
96 static inline bool dsa_port_is_sja1105(struct dsa_port *dp)
98 return dp->ds->ops == &sja1105_switch_ops;
103 static inline bool dsa_port_is_sja1105(struct dsa_port *dp)
110 #endif /* _NET_DSA_SJA1105_H */