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Linux kernel mirror (for testing)
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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
18/* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */
19#define SJA1105_LINKLOCAL_FILTER_A 0x0180C2000000ull
20#define SJA1105_LINKLOCAL_FILTER_A_MASK 0xFFFFFF000000ull
21/* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */
22#define SJA1105_LINKLOCAL_FILTER_B 0x011B19000000ull
23#define SJA1105_LINKLOCAL_FILTER_B_MASK 0xFFFFFF000000ull
24
25/* Source and Destination MAC of follow-up meta frames.
26 * Whereas the choice of SMAC only affects the unique identification of the
27 * switch as sender of meta frames, the DMAC must be an address that is present
28 * in the DSA master port's multicast MAC filter.
29 * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588
30 * over L2 use this address for some purpose already.
31 */
32#define SJA1105_META_SMAC 0x222222222222ull
33#define SJA1105_META_DMAC 0x0180C200000Eull
34
35#define SJA1105_HWTS_RX_EN 0
36
37/* Global tagger data: each struct sja1105_port has a reference to
38 * the structure defined in struct sja1105_private.
39 */
40struct sja1105_tagger_data {
41 struct sk_buff *stampable_skb;
42 /* Protects concurrent access to the meta state machine
43 * from taggers running on multiple ports on SMP systems
44 */
45 spinlock_t meta_lock;
46 unsigned long state;
47};
48
49struct sja1105_skb_cb {
50 u32 meta_tstamp;
51};
52
53#define SJA1105_SKB_CB(skb) \
54 ((struct sja1105_skb_cb *)DSA_SKB_CB_PRIV(skb))
55
56struct sja1105_port {
57 u16 subvlan_map[DSA_8021Q_N_SUBVLAN];
58 struct kthread_worker *xmit_worker;
59 struct kthread_work xmit_work;
60 struct sk_buff_head xmit_queue;
61 struct sja1105_tagger_data *data;
62 struct dsa_port *dp;
63 bool hwts_tx_en;
64 u16 xmit_tpid;
65};
66
67#endif /* _NET_DSA_SJA1105_H */