| 1 | /* SPDX-License-Identifier: GPL-2.0 |
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| 2 | * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com> |
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| 3 | */ |
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| 4 | |
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| 5 | /* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */ |
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| 6 | |
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| 7 | #ifndef _NET_DSA_SJA1105_H |
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| 8 | #define _NET_DSA_SJA1105_H |
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| 9 | |
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| 10 | #include <linux/skbuff.h> |
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| 11 | #include <linux/etherdevice.h> |
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| 12 | #include <linux/dsa/8021q.h> |
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| 13 | #include <net/dsa.h> |
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| 14 | |
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| 15 | #define ETH_P_SJA1105 ETH_P_DSA_8021Q |
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| 16 | #define ETH_P_SJA1105_META 0x0008 |
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| 17 | #define ETH_P_SJA1110 0xdadc |
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| 18 | |
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| 19 | #define SJA1105_DEFAULT_VLAN (VLAN_N_VID - 1) |
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| 20 | |
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| 21 | /* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */ |
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| 22 | #define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull |
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| 23 | #define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull |
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| 24 | /* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */ |
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| 25 | #define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull |
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| 26 | #define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull |
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| 27 | |
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| 28 | /* Source and Destination MAC of follow-up meta frames. |
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| 29 | * Whereas the choice of SMAC only affects the unique identification of the |
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| 30 | * switch as sender of meta frames, the DMAC must be an address that is present |
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| 31 | * in the DSA conduit port's multicast MAC filter. |
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| 32 | * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588 |
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| 33 | * over L2 use this address for some purpose already. |
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| 34 | */ |
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| 35 | #define SJA1105_META_SMAC 0x222222222222ull |
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| 36 | #define SJA1105_META_DMAC 0x0180C200000Eull |
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| 37 | |
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| 38 | enum sja1110_meta_tstamp { |
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| 39 | SJA1110_META_TSTAMP_TX = 0, |
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| 40 | SJA1110_META_TSTAMP_RX = 1, |
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| 41 | }; |
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| 42 | |
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| 43 | struct sja1105_deferred_xmit_work { |
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| 44 | struct dsa_port *dp; |
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| 45 | struct sk_buff *skb; |
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| 46 | struct kthread_work work; |
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| 47 | }; |
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| 48 | |
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| 49 | /* Global tagger data */ |
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| 50 | struct sja1105_tagger_data { |
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| 51 | void (*xmit_work_fn)(struct kthread_work *work); |
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| 52 | void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id, |
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| 53 | enum sja1110_meta_tstamp dir, u64 tstamp); |
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| 54 | }; |
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| 55 | |
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| 56 | struct sja1105_skb_cb { |
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| 57 | struct sk_buff *clone; |
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| 58 | u64 tstamp; |
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| 59 | /* Only valid for packets cloned for 2-step TX timestamping */ |
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| 60 | u8 ts_id; |
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| 61 | }; |
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| 62 | |
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| 63 | #define SJA1105_SKB_CB(skb) \ |
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| 64 | ((struct sja1105_skb_cb *)((skb)->cb)) |
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| 65 | |
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| 66 | static inline struct sja1105_tagger_data * |
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| 67 | sja1105_tagger_data(struct dsa_switch *ds) |
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| 68 | { |
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| 69 | BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 && |
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| 70 | ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110); |
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| 71 | |
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| 72 | return ds->tagger_data; |
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| 73 | } |
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| 74 | |
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| 75 | #endif /* _NET_DSA_SJA1105_H */ |
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| 76 | |
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