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Diffstat (limited to 'include/linux/dsa/sja1105.h')
| -rw-r--r-- | include/linux/dsa/sja1105.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/linux/dsa/sja1105.h b/include/linux/dsa/sja1105.h new file mode 100644 index 000000000..c177322f7 --- /dev/null +++ b/include/linux/dsa/sja1105.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 + * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com> + */ + +/* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */ + +#ifndef _NET_DSA_SJA1105_H +#define _NET_DSA_SJA1105_H + +#include <linux/skbuff.h> +#include <linux/etherdevice.h> +#include <linux/dsa/8021q.h> +#include <net/dsa.h> + +#define ETH_P_SJA1105 ETH_P_DSA_8021Q +#define ETH_P_SJA1105_META 0x0008 +#define ETH_P_SJA1110 0xdadc + +#define SJA1105_DEFAULT_VLAN (VLAN_N_VID - 1) + +/* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */ +#define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull +#define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull +/* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */ +#define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull +#define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull + +/* Source and Destination MAC of follow-up meta frames. + * Whereas the choice of SMAC only affects the unique identification of the + * switch as sender of meta frames, the DMAC must be an address that is present + * in the DSA master port's multicast MAC filter. + * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588 + * over L2 use this address for some purpose already. + */ +#define SJA1105_META_SMAC 0x222222222222ull +#define SJA1105_META_DMAC 0x0180C200000Eull + +enum sja1110_meta_tstamp { + SJA1110_META_TSTAMP_TX = 0, + SJA1110_META_TSTAMP_RX = 1, +}; + +struct sja1105_deferred_xmit_work { + struct dsa_port *dp; + struct sk_buff *skb; + struct kthread_work work; +}; + +/* Global tagger data */ +struct sja1105_tagger_data { + void (*xmit_work_fn)(struct kthread_work *work); + void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id, + enum sja1110_meta_tstamp dir, u64 tstamp); +}; + +struct sja1105_skb_cb { + struct sk_buff *clone; + u64 tstamp; + /* Only valid for packets cloned for 2-step TX timestamping */ + u8 ts_id; +}; + +#define SJA1105_SKB_CB(skb) \ + ((struct sja1105_skb_cb *)((skb)->cb)) + +static inline struct sja1105_tagger_data * +sja1105_tagger_data(struct dsa_switch *ds) +{ + BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 && + ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110); + + return ds->tagger_data; +} + +#endif /* _NET_DSA_SJA1105_H */ |