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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
// SPDX-License-Identifier: GPL-2.0+
#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <linux/dcbnl.h>
#include "dcb.h"
#include "utils.h"
static void dcb_dcbx_help_set(void)
{
fprintf(stderr,
"Usage: dcb dcbx set dev STRING\n"
" [ host | lld-managed ]\n"
" [ cee | ieee ] [ static ]\n"
"\n"
);
}
static void dcb_dcbx_help_show(void)
{
fprintf(stderr,
"Usage: dcb dcbx show dev STRING\n"
"\n"
);
}
static void dcb_dcbx_help(void)
{
fprintf(stderr,
"Usage: dcb dcbx help\n"
"\n"
);
dcb_dcbx_help_show();
dcb_dcbx_help_set();
}
struct dcb_dcbx_flag {
__u8 value;
const char *key_fp;
const char *key_json;
};
static const struct dcb_dcbx_flag dcb_dcbx_flags[] = {
{DCB_CAP_DCBX_HOST, "host", NULL },
{DCB_CAP_DCBX_LLD_MANAGED, "lld-managed", "lld_managed" },
{DCB_CAP_DCBX_VER_CEE, "cee", NULL },
{DCB_CAP_DCBX_VER_IEEE, "ieee", NULL },
{DCB_CAP_DCBX_STATIC, "static", NULL },
};
static void dcb_dcbx_print(__u8 dcbx)
{
int bit;
int i;
while ((bit = ffs(dcbx))) {
bool found = false;
bit--;
for (i = 0; i < ARRAY_SIZE(dcb_dcbx_flags); i++) {
const struct dcb_dcbx_flag *flag = &dcb_dcbx_flags[i];
if (flag->value == 1 << bit) {
print_bool(PRINT_JSON, flag->key_json ?: flag->key_fp,
NULL, true);
print_string(PRINT_FP, NULL, "%s ", flag->key_fp);
found = true;
break;
}
}
if (!found)
fprintf(stderr, "Unknown DCBX bit %#x.\n", 1 << bit);
dcbx &= ~(1 << bit);
}
print_nl();
}
static int dcb_dcbx_get(struct dcb *dcb, const char *dev, __u8 *dcbx)
{
__u16 payload_len;
void *payload;
int err;
err = dcb_get_attribute_bare(dcb, DCB_CMD_IEEE_GET, dev, DCB_ATTR_DCBX,
&payload, &payload_len);
if (err != 0)
return err;
if (payload_len != 1) {
fprintf(stderr, "DCB_ATTR_DCBX payload has size %d, expected 1.\n",
payload_len);
return -EINVAL;
}
*dcbx = *(__u8 *) payload;
return 0;
}
static int dcb_dcbx_set(struct dcb *dcb, const char *dev, __u8 dcbx)
{
return dcb_set_attribute_bare(dcb, DCB_CMD_SDCBX, dev, DCB_ATTR_DCBX,
&dcbx, 1, DCB_ATTR_DCBX);
}
static int dcb_cmd_dcbx_set(struct dcb *dcb, const char *dev, int argc, char **argv)
{
__u8 dcbx = 0;
__u8 i;
if (!argc) {
dcb_dcbx_help_set();
return 0;
}
do {
if (matches(*argv, "help") == 0) {
dcb_dcbx_help_set();
return 0;
}
for (i = 0; i < ARRAY_SIZE(dcb_dcbx_flags); i++) {
const struct dcb_dcbx_flag *flag = &dcb_dcbx_flags[i];
if (matches(*argv, flag->key_fp) == 0) {
dcbx |= flag->value;
NEXT_ARG_FWD();
goto next;
}
}
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_dcbx_help_set();
return -EINVAL;
next:
;
} while (argc > 0);
return dcb_dcbx_set(dcb, dev, dcbx);
}
static int dcb_cmd_dcbx_show(struct dcb *dcb, const char *dev, int argc, char **argv)
{
__u8 dcbx;
int ret;
ret = dcb_dcbx_get(dcb, dev, &dcbx);
if (ret != 0)
return ret;
while (argc > 0) {
if (matches(*argv, "help") == 0) {
dcb_dcbx_help_show();
return 0;
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_dcbx_help_show();
return -EINVAL;
}
NEXT_ARG_FWD();
}
open_json_object(NULL);
dcb_dcbx_print(dcbx);
close_json_object();
return 0;
}
int dcb_cmd_dcbx(struct dcb *dcb, int argc, char **argv)
{
if (!argc || matches(*argv, "help") == 0) {
dcb_dcbx_help();
return 0;
} else if (matches(*argv, "show") == 0) {
NEXT_ARG_FWD();
return dcb_cmd_parse_dev(dcb, argc, argv,
dcb_cmd_dcbx_show, dcb_dcbx_help_show);
} else if (matches(*argv, "set") == 0) {
NEXT_ARG_FWD();
return dcb_cmd_parse_dev(dcb, argc, argv,
dcb_cmd_dcbx_set, dcb_dcbx_help_set);
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_dcbx_help();
return -EINVAL;
}
}
|
