1 /* SPDX-License-Identifier: GPL-2.0 2 * Copyright (c) 2019, Vladimir Oltean <[email protected]> 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 /* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */ 20 #define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull 21 #define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull 22 /* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */ 23 #define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull 24 #define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull 25 26 /* Source and Destination MAC of follow-up meta frames. 27 * Whereas the choice of SMAC only affects the unique identification of the 28 * switch as sender of meta frames, the DMAC must be an address that is present 29 * in the DSA master port's multicast MAC filter. 30 * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588 31 * over L2 use this address for some purpose already. 32 */ 33 #define SJA1105_META_SMAC 0x222222222222ull 34 #define SJA1105_META_DMAC 0x0180C200000Eull 35 36 #define SJA1105_HWTS_RX_EN 0 37 38 /* Global tagger data: each struct sja1105_port has a reference to 39 * the structure defined in struct sja1105_private. 40 */ 41 struct sja1105_tagger_data { 42 struct sk_buff *stampable_skb; 43 /* Protects concurrent access to the meta state machine 44 * from taggers running on multiple ports on SMP systems 45 */ 46 spinlock_t meta_lock; 47 unsigned long state; 48 u8 ts_id; 49 }; 50 51 struct sja1105_skb_cb { 52 struct sk_buff *clone; 53 u64 tstamp; 54 /* Only valid for packets cloned for 2-step TX timestamping */ 55 u8 ts_id; 56 }; 57 58 #define SJA1105_SKB_CB(skb) \ 59 ((struct sja1105_skb_cb *)((skb)->cb)) 60 61 struct sja1105_port { 62 u16 subvlan_map[DSA_8021Q_N_SUBVLAN]; 63 struct kthread_worker *xmit_worker; 64 struct kthread_work xmit_work; 65 struct sk_buff_head xmit_queue; 66 struct sja1105_tagger_data *data; 67 struct dsa_port *dp; 68 bool hwts_tx_en; 69 u16 xmit_tpid; 70 }; 71 72 enum sja1110_meta_tstamp { 73 SJA1110_META_TSTAMP_TX = 0, 74 SJA1110_META_TSTAMP_RX = 1, 75 }; 76 77 #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) 78 79 void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, u8 ts_id, 80 enum sja1110_meta_tstamp dir, u64 tstamp); 81 82 #else 83 84 static inline void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, 85 u8 ts_id, enum sja1110_meta_tstamp dir, 86 u64 tstamp) 87 { 88 } 89 90 #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) */ 91 92 #endif /* _NET_DSA_SJA1105_H */ 93