6b13f685e
 김민수
BSP 최초 추가
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/* Copyright 2011-2013 Autronica Fire and Security AS
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
*/
#ifndef _HSR_PRIVATE_H
#define _HSR_PRIVATE_H
#include <linux/netdevice.h>
#include <linux/list.h>
/* Time constants as specified in the HSR specification (IEC-62439-3 2010)
* Table 8.
* All values in milliseconds.
*/
#define HSR_LIFE_CHECK_INTERVAL 2000 /* ms */
#define HSR_NODE_FORGET_TIME 60000 /* ms */
#define HSR_ANNOUNCE_INTERVAL 100 /* ms */
/* By how much may slave1 and slave2 timestamps of latest received frame from
* each node differ before we notify of communication problem?
*/
#define MAX_SLAVE_DIFF 3000 /* ms */
/* How often shall we check for broken ring and remove node entries older than
* HSR_NODE_FORGET_TIME?
*/
#define PRUNE_PERIOD 3000 /* ms */
#define HSR_TLV_ANNOUNCE 22
#define HSR_TLV_LIFE_CHECK 23
/* HSR Tag.
* As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
* path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
* h_source, h_proto = 0x88FB }, and add { path, LSDU_size, sequence Nr,
* encapsulated protocol } instead.
*/
#define HSR_TAGLEN 6
/* Field names below as defined in the IEC:2010 standard for HSR. */
struct hsr_tag {
__be16 path_and_LSDU_size;
__be16 sequence_nr;
__be16 encap_proto;
} __packed;
/* The helper functions below assumes that 'path' occupies the 4 most
* significant bits of the 16-bit field shared by 'path' and 'LSDU_size' (or
* equivalently, the 4 most significant bits of HSR tag byte 14).
*
* This is unclear in the IEC specification; its definition of MAC addresses
* indicates the spec is written with the least significant bit first (to the
* left). This, however, would mean that the LSDU field would be split in two
* with the path field in-between, which seems strange. I'm guessing the MAC
* address definition is in error.
*/
static inline u16 get_hsr_tag_path(struct hsr_tag *ht)
{
return ntohs(ht->path_and_LSDU_size) >> 12;
}
static inline u16 get_hsr_tag_LSDU_size(struct hsr_tag *ht)
{
return ntohs(ht->path_and_LSDU_size) & 0x0FFF;
}
static inline void set_hsr_tag_path(struct hsr_tag *ht, u16 path)
{
ht->path_and_LSDU_size = htons(
(ntohs(ht->path_and_LSDU_size) & 0x0FFF) | (path << 12));
}
static inline void set_hsr_tag_LSDU_size(struct hsr_tag *ht, u16 LSDU_size)
{
ht->path_and_LSDU_size = htons(
(ntohs(ht->path_and_LSDU_size) & 0xF000) |
(LSDU_size & 0x0FFF));
}
struct hsr_ethhdr {
struct ethhdr ethhdr;
struct hsr_tag hsr_tag;
} __packed;
/* HSR Supervision Frame data types.
* Field names as defined in the IEC:2010 standard for HSR.
*/
struct hsr_sup_tag {
__be16 path_and_HSR_Ver;
__be16 sequence_nr;
__u8 HSR_TLV_Type;
__u8 HSR_TLV_Length;
} __packed;
struct hsr_sup_payload {
unsigned char MacAddressA[ETH_ALEN];
} __packed;
static inline u16 get_hsr_stag_path(struct hsr_sup_tag *hst)
{
return get_hsr_tag_path((struct hsr_tag *) hst);
}
static inline u16 get_hsr_stag_HSR_ver(struct hsr_sup_tag *hst)
{
return get_hsr_tag_LSDU_size((struct hsr_tag *) hst);
}
static inline void set_hsr_stag_path(struct hsr_sup_tag *hst, u16 path)
{
set_hsr_tag_path((struct hsr_tag *) hst, path);
}
static inline void set_hsr_stag_HSR_Ver(struct hsr_sup_tag *hst, u16 HSR_Ver)
{
set_hsr_tag_LSDU_size((struct hsr_tag *) hst, HSR_Ver);
}
struct hsr_ethhdr_sp {
struct ethhdr ethhdr;
struct hsr_sup_tag hsr_sup;
} __packed;
enum hsr_dev_idx {
HSR_DEV_NONE = -1,
HSR_DEV_SLAVE_A = 0,
HSR_DEV_SLAVE_B,
HSR_DEV_MASTER,
};
#define HSR_MAX_SLAVE (HSR_DEV_SLAVE_B + 1)
#define HSR_MAX_DEV (HSR_DEV_MASTER + 1)
struct hsr_priv {
struct list_head hsr_list; /* List of hsr devices */
struct rcu_head rcu_head;
struct net_device *dev;
struct net_device *slave[HSR_MAX_SLAVE];
struct list_head node_db; /* Other HSR nodes */
struct list_head self_node_db; /* MACs of slaves */
struct timer_list announce_timer; /* Supervision frame dispatch */
int announce_count;
u16 sequence_nr;
spinlock_t seqnr_lock; /* locking for sequence_nr */
unsigned char sup_multicast_addr[ETH_ALEN];
};
void register_hsr_master(struct hsr_priv *hsr_priv);
void unregister_hsr_master(struct hsr_priv *hsr_priv);
bool is_hsr_slave(struct net_device *dev);
#endif /* _HSR_PRIVATE_H */
|