1
2
3#include <errno.h>
4#include <inttypes.h>
5#include <stdio.h>
6#include <linux/dcbnl.h>
7
8#include "dcb.h"
9#include "utils.h"
10
11static void dcb_maxrate_help_set(void)
12{
13 fprintf(stderr,
14 "Usage: dcb maxrate set dev STRING\n"
15 " [ tc-maxrate RATE-MAP ]\n"
16 "\n"
17 " where RATE-MAP := [ RATE-MAP ] RATE-MAPPING\n"
18 " RATE-MAPPING := { all | TC }:RATE\n"
19 " TC := { 0 .. 7 }\n"
20 "\n"
21 );
22}
23
24static void dcb_maxrate_help_show(void)
25{
26 fprintf(stderr,
27 "Usage: dcb [ -i ] maxrate show dev STRING\n"
28 " [ tc-maxrate ]\n"
29 "\n"
30 );
31}
32
33static void dcb_maxrate_help(void)
34{
35 fprintf(stderr,
36 "Usage: dcb maxrate help\n"
37 "\n"
38 );
39 dcb_maxrate_help_show();
40 dcb_maxrate_help_set();
41}
42
43static int dcb_maxrate_parse_mapping_tc_maxrate(__u32 key, char *value, void *data)
44{
45 __u64 rate;
46
47 if (get_rate64(&rate, value))
48 return -EINVAL;
49
50 return dcb_parse_mapping("TC", key, IEEE_8021QAZ_MAX_TCS - 1,
51 "RATE", rate, -1,
52 dcb_set_u64, data);
53}
54
55static void dcb_maxrate_print_tc_maxrate(struct dcb *dcb, const struct ieee_maxrate *maxrate)
56{
57 size_t size = ARRAY_SIZE(maxrate->tc_maxrate);
58 SPRINT_BUF(b);
59 size_t i;
60
61 open_json_array(PRINT_JSON, "tc_maxrate");
62 print_string(PRINT_FP, NULL, "tc-maxrate ", NULL);
63
64 for (i = 0; i < size; i++) {
65 snprintf(b, sizeof(b), "%zd:%%s ", i);
66 print_rate(dcb->use_iec, PRINT_ANY, NULL, b, maxrate->tc_maxrate[i]);
67 }
68
69 close_json_array(PRINT_JSON, "tc_maxrate");
70}
71
72static void dcb_maxrate_print(struct dcb *dcb, const struct ieee_maxrate *maxrate)
73{
74 dcb_maxrate_print_tc_maxrate(dcb, maxrate);
75 print_nl();
76}
77
78static int dcb_maxrate_get(struct dcb *dcb, const char *dev, struct ieee_maxrate *maxrate)
79{
80 return dcb_get_attribute(dcb, dev, DCB_ATTR_IEEE_MAXRATE, maxrate, sizeof(*maxrate));
81}
82
83static int dcb_maxrate_set(struct dcb *dcb, const char *dev, const struct ieee_maxrate *maxrate)
84{
85 return dcb_set_attribute(dcb, dev, DCB_ATTR_IEEE_MAXRATE, maxrate, sizeof(*maxrate));
86}
87
88static int dcb_cmd_maxrate_set(struct dcb *dcb, const char *dev, int argc, char **argv)
89{
90 struct ieee_maxrate maxrate;
91 int ret;
92
93 if (!argc) {
94 dcb_maxrate_help_set();
95 return 0;
96 }
97
98 ret = dcb_maxrate_get(dcb, dev, &maxrate);
99 if (ret)
100 return ret;
101
102 do {
103 if (matches(*argv, "help") == 0) {
104 dcb_maxrate_help_set();
105 return 0;
106 } else if (matches(*argv, "tc-maxrate") == 0) {
107 NEXT_ARG();
108 ret = parse_mapping(&argc, &argv, true,
109 &dcb_maxrate_parse_mapping_tc_maxrate, &maxrate);
110 if (ret) {
111 fprintf(stderr, "Invalid mapping %s\n", *argv);
112 return ret;
113 }
114 continue;
115 } else {
116 fprintf(stderr, "What is \"%s\"?\n", *argv);
117 dcb_maxrate_help_set();
118 return -EINVAL;
119 }
120
121 NEXT_ARG_FWD();
122 } while (argc > 0);
123
124 return dcb_maxrate_set(dcb, dev, &maxrate);
125}
126
127static int dcb_cmd_maxrate_show(struct dcb *dcb, const char *dev, int argc, char **argv)
128{
129 struct ieee_maxrate maxrate;
130 int ret;
131
132 ret = dcb_maxrate_get(dcb, dev, &maxrate);
133 if (ret)
134 return ret;
135
136 open_json_object(NULL);
137
138 if (!argc) {
139 dcb_maxrate_print(dcb, &maxrate);
140 goto out;
141 }
142
143 do {
144 if (matches(*argv, "help") == 0) {
145 dcb_maxrate_help_show();
146 return 0;
147 } else if (matches(*argv, "tc-maxrate") == 0) {
148 dcb_maxrate_print_tc_maxrate(dcb, &maxrate);
149 print_nl();
150 } else {
151 fprintf(stderr, "What is \"%s\"?\n", *argv);
152 dcb_maxrate_help_show();
153 return -EINVAL;
154 }
155
156 NEXT_ARG_FWD();
157 } while (argc > 0);
158
159out:
160 close_json_object();
161 return 0;
162}
163
164int dcb_cmd_maxrate(struct dcb *dcb, int argc, char **argv)
165{
166 if (!argc || matches(*argv, "help") == 0) {
167 dcb_maxrate_help();
168 return 0;
169 } else if (matches(*argv, "show") == 0) {
170 NEXT_ARG_FWD();
171 return dcb_cmd_parse_dev(dcb, argc, argv,
172 dcb_cmd_maxrate_show, dcb_maxrate_help_show);
173 } else if (matches(*argv, "set") == 0) {
174 NEXT_ARG_FWD();
175 return dcb_cmd_parse_dev(dcb, argc, argv,
176 dcb_cmd_maxrate_set, dcb_maxrate_help_set);
177 } else {
178 fprintf(stderr, "What is \"%s\"?\n", *argv);
179 dcb_maxrate_help();
180 return -EINVAL;
181 }
182}
183
