844d7edc6a
This will be used to keep state for RX timestamping. It is global because the switch serializes timestampable and meta frames when trapping them towards the CPU port (lower port indices have higher priority) and therefore having one state machine per port would create unnecessary complications. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* 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 <net/dsa.h>
|
|
|
|
#define ETH_P_SJA1105 ETH_P_DSA_8021Q
|
|
#define ETH_P_SJA1105_META 0x0008
|
|
|
|
/* 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
|
|
|
|
/* Global tagger data: each struct sja1105_port has a reference to
|
|
* the structure defined in struct sja1105_private.
|
|
*/
|
|
struct sja1105_tagger_data {
|
|
struct sk_buff_head skb_rxtstamp_queue;
|
|
struct work_struct rxtstamp_work;
|
|
struct sk_buff *stampable_skb;
|
|
/* Protects concurrent access to the meta state machine
|
|
* from taggers running on multiple ports on SMP systems
|
|
*/
|
|
spinlock_t meta_lock;
|
|
bool hwts_rx_en;
|
|
};
|
|
|
|
struct sja1105_port {
|
|
struct sja1105_tagger_data *data;
|
|
struct dsa_port *dp;
|
|
bool hwts_tx_en;
|
|
int mgmt_slot;
|
|
};
|
|
|
|
#endif /* _NET_DSA_SJA1105_H */
|