1 /* SPDX-License-Identifier: GPL-2.0 2 * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com> 3 */ 4 5 /* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */ 6 7 #ifndef _NET_DSA_SJA1105_H 8 #define _NET_DSA_SJA1105_H 9 10 #include <linux/skbuff.h> 11 #include <linux/etherdevice.h> 12 #include <linux/dsa/8021q.h> 13 #include <net/dsa.h> 14 15 #define ETH_P_SJA1105 ETH_P_DSA_8021Q 16 #define ETH_P_SJA1105_META 0x0008 17 #define ETH_P_SJA1110 0xdadc 18 19 #define SJA1105_DEFAULT_VLAN (VLAN_N_VID - 1) 20 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 27 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. 34 */ 35 #define SJA1105_META_SMAC 0x222222222222ull 36 #define SJA1105_META_DMAC 0x0180C200000Eull 37 38 enum sja1110_meta_tstamp { 39 SJA1110_META_TSTAMP_TX = 0, 40 SJA1110_META_TSTAMP_RX = 1, 41 }; 42 43 struct sja1105_deferred_xmit_work { 44 struct dsa_port *dp; 45 struct sk_buff *skb; 46 struct kthread_work work; 47 }; 48 49 /* Global tagger data */ 50 struct sja1105_tagger_data { 51 void (*xmit_work_fn)(struct kthread_work *work); 52 void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id, 53 enum sja1110_meta_tstamp dir, u64 tstamp); 54 }; 55 56 struct sja1105_skb_cb { 57 struct sk_buff *clone; 58 u64 tstamp; 59 /* Only valid for packets cloned for 2-step TX timestamping */ 60 u8 ts_id; 61 }; 62 63 #define SJA1105_SKB_CB(skb) \ 64 ((struct sja1105_skb_cb *)((skb)->cb)) 65 66 static inline struct sja1105_tagger_data * sja1105_tagger_data(struct dsa_switch * ds)67sja1105_tagger_data(struct dsa_switch *ds) 68 { 69 BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 && 70 ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110); 71 72 return ds->tagger_data; 73 } 74 75 #endif /* _NET_DSA_SJA1105_H */ 76