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 /* Tagger to switch */ 52 void (*xmit_work_fn)(struct kthread_work *work); 53 void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id, 54 enum sja1110_meta_tstamp dir, u64 tstamp); 55 /* Switch to tagger */ 56 bool (*rxtstamp_get_state)(struct dsa_switch *ds); 57 void (*rxtstamp_set_state)(struct dsa_switch *ds, bool on); 58 }; 59 60 struct sja1105_skb_cb { 61 struct sk_buff *clone; 62 u64 tstamp; 63 /* Only valid for packets cloned for 2-step TX timestamping */ 64 u8 ts_id; 65 }; 66 67 #define SJA1105_SKB_CB(skb) \ 68 ((struct sja1105_skb_cb *)((skb)->cb)) 69 70 static inline struct sja1105_tagger_data * 71 sja1105_tagger_data(struct dsa_switch *ds) 72 { 73 BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 && 74 ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110); 75 76 return ds->tagger_data; 77 } 78 79 #endif /* _NET_DSA_SJA1105_H */ 80