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 <net/dsa.h> 13 14 #define ETH_P_SJA1105 ETH_P_DSA_8021Q 15 #define ETH_P_SJA1105_META 0x0008 16 17 /* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */ 18 #define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull 19 #define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull 20 /* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */ 21 #define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull 22 #define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull 23 24 /* Source and Destination MAC of follow-up meta frames. 25 * Whereas the choice of SMAC only affects the unique identification of the 26 * switch as sender of meta frames, the DMAC must be an address that is present 27 * in the DSA master port's multicast MAC filter. 28 * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588 29 * over L2 use this address for some purpose already. 30 */ 31 #define SJA1105_META_SMAC 0x222222222222ull 32 #define SJA1105_META_DMAC 0x0180C200000Eull 33 34 #define SJA1105_HWTS_RX_EN 0 35 36 /* Global tagger data: each struct sja1105_port has a reference to 37 * the structure defined in struct sja1105_private. 38 */ 39 struct sja1105_tagger_data { 40 struct sk_buff *stampable_skb; 41 /* Protects concurrent access to the meta state machine 42 * from taggers running on multiple ports on SMP systems 43 */ 44 spinlock_t meta_lock; 45 unsigned long state; 46 }; 47 48 struct sja1105_skb_cb { 49 u32 meta_tstamp; 50 }; 51 52 #define SJA1105_SKB_CB(skb) \ 53 ((struct sja1105_skb_cb *)DSA_SKB_CB_PRIV(skb)) 54 55 struct sja1105_port { 56 struct kthread_worker *xmit_worker; 57 struct kthread_work xmit_work; 58 struct sk_buff_head xmit_queue; 59 struct sja1105_tagger_data *data; 60 struct dsa_port *dp; 61 bool hwts_tx_en; 62 }; 63 64 #endif /* _NET_DSA_SJA1105_H */ 65