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6567cb58 PM |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | ||
3 | #include <errno.h> | |
4 | #include <stdio.h> | |
5 | #include <linux/dcbnl.h> | |
6 | ||
7 | #include "dcb.h" | |
8 | #include "utils.h" | |
9 | ||
10 | static void dcb_pfc_help_set(void) | |
11 | { | |
12 | fprintf(stderr, | |
13 | "Usage: dcb pfc set dev STRING\n" | |
14 | " [ prio-pfc PFC-MAP ]\n" | |
15 | " [ macsec-bypass { on | off } ]\n" | |
16 | " [ delay INTEGER ]\n" | |
17 | "\n" | |
18 | " where PFC-MAP := [ PFC-MAP ] PFC-MAPPING\n" | |
19 | " PFC-MAPPING := { all | TC }:PFC\n" | |
20 | " TC := { 0 .. 7 }\n" | |
21 | " PFC := { on | off }\n" | |
22 | "\n" | |
23 | ); | |
24 | } | |
25 | ||
26 | static void dcb_pfc_help_show(void) | |
27 | { | |
28 | fprintf(stderr, | |
29 | "Usage: dcb [ -s ] pfc show dev STRING\n" | |
30 | " [ pfc-cap ] [ prio-pfc ] [ macsec-bypass ]\n" | |
31 | " [ delay ] [ requests ] [ indications ]\n" | |
32 | "\n" | |
33 | ); | |
34 | } | |
35 | ||
36 | static void dcb_pfc_help(void) | |
37 | { | |
38 | fprintf(stderr, | |
39 | "Usage: dcb pfc help\n" | |
40 | "\n" | |
41 | ); | |
42 | dcb_pfc_help_show(); | |
43 | dcb_pfc_help_set(); | |
44 | } | |
45 | ||
46 | static void dcb_pfc_to_array(__u8 array[IEEE_8021QAZ_MAX_TCS], __u8 pfc_en) | |
47 | { | |
48 | int i; | |
49 | ||
50 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) | |
51 | array[i] = !!(pfc_en & (1 << i)); | |
52 | } | |
53 | ||
54 | static void dcb_pfc_from_array(__u8 array[IEEE_8021QAZ_MAX_TCS], __u8 *pfc_en_p) | |
55 | { | |
56 | __u8 pfc_en = 0; | |
57 | int i; | |
58 | ||
59 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { | |
60 | if (array[i]) | |
61 | pfc_en |= 1 << i; | |
62 | } | |
63 | ||
64 | *pfc_en_p = pfc_en; | |
65 | } | |
66 | ||
67 | static int dcb_pfc_parse_mapping_prio_pfc(__u32 key, char *value, void *data) | |
68 | { | |
69 | struct ieee_pfc *pfc = data; | |
70 | __u8 pfc_en[IEEE_8021QAZ_MAX_TCS]; | |
71 | bool enabled; | |
72 | int ret; | |
73 | ||
74 | dcb_pfc_to_array(pfc_en, pfc->pfc_en); | |
75 | ||
76 | enabled = parse_on_off("PFC", value, &ret); | |
77 | if (ret) | |
78 | return ret; | |
79 | ||
80 | ret = dcb_parse_mapping("PRIO", key, IEEE_8021QAZ_MAX_TCS - 1, | |
81 | "PFC", enabled, -1, | |
82 | dcb_set_u8, pfc_en); | |
83 | if (ret) | |
84 | return ret; | |
85 | ||
86 | dcb_pfc_from_array(pfc_en, &pfc->pfc_en); | |
87 | return 0; | |
88 | } | |
89 | ||
90 | static void dcb_pfc_print_pfc_cap(const struct ieee_pfc *pfc) | |
91 | { | |
92 | print_uint(PRINT_ANY, "pfc_cap", "pfc-cap %d ", pfc->pfc_cap); | |
93 | } | |
94 | ||
95 | static void dcb_pfc_print_macsec_bypass(const struct ieee_pfc *pfc) | |
96 | { | |
97 | print_on_off(PRINT_ANY, "macsec_bypass", "macsec-bypass %s ", pfc->mbc); | |
98 | } | |
99 | ||
100 | static void dcb_pfc_print_delay(const struct ieee_pfc *pfc) | |
101 | { | |
102 | print_uint(PRINT_ANY, "delay", "delay %d ", pfc->delay); | |
103 | } | |
104 | ||
105 | static void dcb_pfc_print_prio_pfc(const struct ieee_pfc *pfc) | |
106 | { | |
107 | __u8 pfc_en[IEEE_8021QAZ_MAX_TCS]; | |
108 | ||
109 | dcb_pfc_to_array(pfc_en, pfc->pfc_en); | |
110 | dcb_print_named_array("prio_pfc", "prio-pfc", | |
111 | pfc_en, ARRAY_SIZE(pfc_en), &dcb_print_array_on_off); | |
112 | } | |
113 | ||
114 | static void dcb_pfc_print_requests(const struct ieee_pfc *pfc) | |
115 | { | |
116 | open_json_array(PRINT_JSON, "requests"); | |
117 | print_string(PRINT_FP, NULL, "requests ", NULL); | |
118 | dcb_print_array_u64(pfc->requests, ARRAY_SIZE(pfc->requests)); | |
119 | close_json_array(PRINT_JSON, "requests"); | |
120 | } | |
121 | ||
122 | static void dcb_pfc_print_indications(const struct ieee_pfc *pfc) | |
123 | { | |
124 | open_json_array(PRINT_JSON, "indications"); | |
125 | print_string(PRINT_FP, NULL, "indications ", NULL); | |
126 | dcb_print_array_u64(pfc->indications, ARRAY_SIZE(pfc->indications)); | |
127 | close_json_array(PRINT_JSON, "indications"); | |
128 | } | |
129 | ||
130 | static void dcb_pfc_print(const struct dcb *dcb, const struct ieee_pfc *pfc) | |
131 | { | |
132 | dcb_pfc_print_pfc_cap(pfc); | |
133 | dcb_pfc_print_macsec_bypass(pfc); | |
134 | dcb_pfc_print_delay(pfc); | |
135 | print_nl(); | |
136 | ||
137 | dcb_pfc_print_prio_pfc(pfc); | |
138 | print_nl(); | |
139 | ||
140 | if (dcb->stats) { | |
141 | dcb_pfc_print_requests(pfc); | |
142 | print_nl(); | |
143 | ||
144 | dcb_pfc_print_indications(pfc); | |
145 | print_nl(); | |
146 | } | |
147 | } | |
148 | ||
149 | static int dcb_pfc_get(struct dcb *dcb, const char *dev, struct ieee_pfc *pfc) | |
150 | { | |
151 | return dcb_get_attribute(dcb, dev, DCB_ATTR_IEEE_PFC, pfc, sizeof(*pfc)); | |
152 | } | |
153 | ||
154 | static int dcb_pfc_set(struct dcb *dcb, const char *dev, const struct ieee_pfc *pfc) | |
155 | { | |
156 | return dcb_set_attribute(dcb, dev, DCB_ATTR_IEEE_PFC, pfc, sizeof(*pfc)); | |
157 | } | |
158 | ||
159 | static int dcb_cmd_pfc_set(struct dcb *dcb, const char *dev, int argc, char **argv) | |
160 | { | |
161 | struct ieee_pfc pfc; | |
162 | int ret; | |
163 | ||
164 | if (!argc) { | |
165 | dcb_pfc_help_set(); | |
166 | return 0; | |
167 | } | |
168 | ||
169 | ret = dcb_pfc_get(dcb, dev, &pfc); | |
170 | if (ret) | |
171 | return ret; | |
172 | ||
173 | do { | |
174 | if (matches(*argv, "help") == 0) { | |
175 | dcb_pfc_help_set(); | |
176 | return 0; | |
177 | } else if (matches(*argv, "prio-pfc") == 0) { | |
178 | NEXT_ARG(); | |
179 | ret = parse_mapping(&argc, &argv, true, | |
180 | &dcb_pfc_parse_mapping_prio_pfc, &pfc); | |
181 | if (ret) { | |
182 | fprintf(stderr, "Invalid pfc mapping %s\n", *argv); | |
183 | return ret; | |
184 | } | |
185 | continue; | |
186 | } else if (matches(*argv, "macsec-bypass") == 0) { | |
187 | NEXT_ARG(); | |
188 | pfc.mbc = parse_on_off("macsec-bypass", *argv, &ret); | |
189 | if (ret) | |
190 | return ret; | |
191 | } else if (matches(*argv, "delay") == 0) { | |
192 | NEXT_ARG(); | |
193 | /* Do not support the size notations for delay. | |
194 | * Delay is specified in "bit times", not bits, so | |
195 | * it is not applicable. At the same time it would | |
196 | * be confusing that 10Kbit does not mean 10240, | |
197 | * but 1280. | |
198 | */ | |
199 | if (get_u16(&pfc.delay, *argv, 0)) { | |
200 | fprintf(stderr, "Invalid delay `%s', expected an integer 0..65535\n", | |
201 | *argv); | |
202 | return -EINVAL; | |
203 | } | |
204 | } else { | |
205 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
206 | dcb_pfc_help_set(); | |
207 | return -EINVAL; | |
208 | } | |
209 | ||
210 | NEXT_ARG_FWD(); | |
211 | } while (argc > 0); | |
212 | ||
213 | return dcb_pfc_set(dcb, dev, &pfc); | |
214 | } | |
215 | ||
216 | static int dcb_cmd_pfc_show(struct dcb *dcb, const char *dev, int argc, char **argv) | |
217 | { | |
218 | struct ieee_pfc pfc; | |
219 | int ret; | |
220 | ||
221 | ret = dcb_pfc_get(dcb, dev, &pfc); | |
222 | if (ret) | |
223 | return ret; | |
224 | ||
225 | open_json_object(NULL); | |
226 | ||
227 | if (!argc) { | |
228 | dcb_pfc_print(dcb, &pfc); | |
229 | goto out; | |
230 | } | |
231 | ||
232 | do { | |
233 | if (matches(*argv, "help") == 0) { | |
234 | dcb_pfc_help_show(); | |
235 | return 0; | |
236 | } else if (matches(*argv, "prio-pfc") == 0) { | |
237 | dcb_pfc_print_prio_pfc(&pfc); | |
238 | print_nl(); | |
239 | } else if (matches(*argv, "pfc-cap") == 0) { | |
240 | dcb_pfc_print_pfc_cap(&pfc); | |
241 | print_nl(); | |
242 | } else if (matches(*argv, "macsec-bypass") == 0) { | |
243 | dcb_pfc_print_macsec_bypass(&pfc); | |
244 | print_nl(); | |
245 | } else if (matches(*argv, "delay") == 0) { | |
246 | dcb_pfc_print_delay(&pfc); | |
247 | print_nl(); | |
248 | } else if (matches(*argv, "requests") == 0) { | |
249 | dcb_pfc_print_requests(&pfc); | |
250 | print_nl(); | |
251 | } else if (matches(*argv, "indications") == 0) { | |
252 | dcb_pfc_print_indications(&pfc); | |
253 | print_nl(); | |
254 | } else { | |
255 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
256 | dcb_pfc_help_show(); | |
257 | return -EINVAL; | |
258 | } | |
259 | ||
260 | NEXT_ARG_FWD(); | |
261 | } while (argc > 0); | |
262 | ||
263 | out: | |
264 | close_json_object(); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | int dcb_cmd_pfc(struct dcb *dcb, int argc, char **argv) | |
269 | { | |
270 | if (!argc || matches(*argv, "help") == 0) { | |
271 | dcb_pfc_help(); | |
272 | return 0; | |
273 | } else if (matches(*argv, "show") == 0) { | |
274 | NEXT_ARG_FWD(); | |
275 | return dcb_cmd_parse_dev(dcb, argc, argv, | |
276 | dcb_cmd_pfc_show, dcb_pfc_help_show); | |
277 | } else if (matches(*argv, "set") == 0) { | |
278 | NEXT_ARG_FWD(); | |
279 | return dcb_cmd_parse_dev(dcb, argc, argv, | |
280 | dcb_cmd_pfc_set, dcb_pfc_help_set); | |
281 | } else { | |
282 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
283 | dcb_pfc_help(); | |
284 | return -EINVAL; | |
285 | } | |
286 | } |