2 * q_mqprio.c MQ prio qdisc
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Author: John Fastabend, <john.r.fastabend@intel.com>
16 #include <sys/socket.h>
17 #include <netinet/in.h>
18 #include <arpa/inet.h>
24 static void explain(void)
27 "Usage: ... mqprio [num_tc NUMBER] [map P0 P1 ...]\n"
28 " [queues count1@offset1 count2@offset2 ...] "
30 " [mode dcb|channel]\n"
31 " [shaper bw_rlimit SHAPER_PARAMS]\n"
32 "Where: SHAPER_PARAMS := { min_rate MIN_RATE1 MIN_RATE2 ...|\n"
33 " max_rate MAX_RATE1 MAX_RATE2 ... }\n");
36 static int mqprio_parse_opt(struct qdisc_util *qu, int argc,
37 char **argv, struct nlmsghdr *n, const char *dev)
40 struct tc_mqprio_qopt opt = {
42 .prio_tc_map = { 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 1, 1, 3, 3, 3, 3 },
47 __u64 min_rate64[TC_QOPT_MAX_QUEUE] = {0};
48 __u64 max_rate64[TC_QOPT_MAX_QUEUE] = {0};
49 __u16 shaper = TC_MQPRIO_SHAPER_DCB;
50 __u16 mode = TC_MQPRIO_MODE_DCB;
56 if (strcmp(*argv, "num_tc") == 0) {
58 if (get_u8(&opt.num_tc, *argv, 10)) {
59 fprintf(stderr, "Illegal \"num_tc\"\n");
62 } else if (strcmp(*argv, "map") == 0) {
63 while (idx < TC_QOPT_MAX_QUEUE && NEXT_ARG_OK()) {
65 if (get_u8(&opt.prio_tc_map[idx], *argv, 10)) {
71 for ( ; idx < TC_QOPT_MAX_QUEUE; idx++)
72 opt.prio_tc_map[idx] = 0;
73 } else if (strcmp(*argv, "queues") == 0) {
76 while (idx < TC_QOPT_MAX_QUEUE && NEXT_ARG_OK()) {
83 tok = strtok(tmp, "@");
84 if (get_u16(&opt.count[idx], tok, 10)) {
89 tok = strtok(NULL, "@");
90 if (get_u16(&opt.offset[idx], tok, 10)) {
98 } else if (strcmp(*argv, "hw") == 0) {
100 if (get_u8(&opt.hw, *argv, 10)) {
101 fprintf(stderr, "Illegal \"hw\"\n");
105 } else if (opt.hw && strcmp(*argv, "mode") == 0) {
107 if (matches(*argv, "dcb") == 0) {
108 mode = TC_MQPRIO_MODE_DCB;
109 } else if (matches(*argv, "channel") == 0) {
110 mode = TC_MQPRIO_MODE_CHANNEL;
112 fprintf(stderr, "Illegal mode (%s)\n",
116 if (mode != TC_MQPRIO_MODE_DCB)
117 flags |= TC_MQPRIO_F_MODE;
119 } else if (opt.hw && strcmp(*argv, "shaper") == 0) {
121 if (matches(*argv, "dcb") == 0) {
122 shaper = TC_MQPRIO_SHAPER_DCB;
123 } else if (matches(*argv, "bw_rlimit") == 0) {
124 shaper = TC_MQPRIO_SHAPER_BW_RATE;
125 if (!NEXT_ARG_OK()) {
126 fprintf(stderr, "Incomplete shaper arguments\n");
130 fprintf(stderr, "Illegal shaper (%s)\n",
134 if (shaper != TC_MQPRIO_SHAPER_DCB)
135 flags |= TC_MQPRIO_F_SHAPER;
137 } else if ((shaper == TC_MQPRIO_SHAPER_BW_RATE) &&
138 strcmp(*argv, "min_rate") == 0) {
139 while (idx < TC_QOPT_MAX_QUEUE && NEXT_ARG_OK()) {
141 if (get_rate64(&min_rate64[idx], *argv)) {
147 if (idx < opt.num_tc && !NEXT_ARG_OK()) {
148 fprintf(stderr, "Incomplete arguments, min_rate values expected\n");
151 flags |= TC_MQPRIO_F_MIN_RATE;
152 } else if ((shaper == TC_MQPRIO_SHAPER_BW_RATE) &&
153 strcmp(*argv, "max_rate") == 0) {
154 while (idx < TC_QOPT_MAX_QUEUE && NEXT_ARG_OK()) {
156 if (get_rate64(&max_rate64[idx], *argv)) {
162 if (idx < opt.num_tc && !NEXT_ARG_OK()) {
163 fprintf(stderr, "Incomplete arguments, max_rate values expected\n");
166 flags |= TC_MQPRIO_F_MAX_RATE;
167 } else if (strcmp(*argv, "help") == 0) {
171 invarg("unknown argument", *argv);
176 tail = NLMSG_TAIL(n);
177 addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
179 if (flags & TC_MQPRIO_F_MODE)
180 addattr_l(n, 1024, TCA_MQPRIO_MODE,
181 &mode, sizeof(mode));
182 if (flags & TC_MQPRIO_F_SHAPER)
183 addattr_l(n, 1024, TCA_MQPRIO_SHAPER,
184 &shaper, sizeof(shaper));
186 if (flags & TC_MQPRIO_F_MIN_RATE) {
187 struct rtattr *start;
189 start = addattr_nest(n, 1024,
190 TCA_MQPRIO_MIN_RATE64 | NLA_F_NESTED);
192 for (idx = 0; idx < TC_QOPT_MAX_QUEUE; idx++)
193 addattr_l(n, 1024, TCA_MQPRIO_MIN_RATE64,
194 &min_rate64[idx], sizeof(min_rate64[idx]));
196 addattr_nest_end(n, start);
199 if (flags & TC_MQPRIO_F_MAX_RATE) {
200 struct rtattr *start;
202 start = addattr_nest(n, 1024,
203 TCA_MQPRIO_MAX_RATE64 | NLA_F_NESTED);
205 for (idx = 0; idx < TC_QOPT_MAX_QUEUE; idx++)
206 addattr_l(n, 1024, TCA_MQPRIO_MAX_RATE64,
207 &max_rate64[idx], sizeof(max_rate64[idx]));
209 addattr_nest_end(n, start);
212 tail->rta_len = (void *)NLMSG_TAIL(n) - (void *)tail;
217 static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
220 struct tc_mqprio_qopt *qopt;
221 __u64 min_rate64[TC_QOPT_MAX_QUEUE] = {0};
222 __u64 max_rate64[TC_QOPT_MAX_QUEUE] = {0};
230 len = RTA_PAYLOAD(opt) - RTA_ALIGN(sizeof(*qopt));
232 fprintf(stderr, "options size error\n");
236 qopt = RTA_DATA(opt);
238 fprintf(f, " tc %u map ", qopt->num_tc);
239 for (i = 0; i <= TC_PRIO_MAX; i++)
240 fprintf(f, "%u ", qopt->prio_tc_map[i]);
241 fprintf(f, "\n queues:");
242 for (i = 0; i < qopt->num_tc; i++)
243 fprintf(f, "(%u:%u) ", qopt->offset[i],
244 qopt->offset[i] + qopt->count[i] - 1);
247 struct rtattr *tb[TCA_MQPRIO_MAX + 1];
249 parse_rtattr(tb, TCA_MQPRIO_MAX,
250 RTA_DATA(opt) + RTA_ALIGN(sizeof(*qopt)),
253 if (tb[TCA_MQPRIO_MODE]) {
254 __u16 *mode = RTA_DATA(tb[TCA_MQPRIO_MODE]);
256 if (*mode == TC_MQPRIO_MODE_CHANNEL)
257 fprintf(f, "\n mode:channel");
259 fprintf(f, "\n mode:dcb");
262 if (tb[TCA_MQPRIO_SHAPER]) {
263 __u16 *shaper = RTA_DATA(tb[TCA_MQPRIO_SHAPER]);
265 if (*shaper == TC_MQPRIO_SHAPER_BW_RATE)
266 fprintf(f, "\n shaper:bw_rlimit");
268 fprintf(f, "\n shaper:dcb");
271 if (tb[TCA_MQPRIO_MIN_RATE64]) {
273 int rem = RTA_PAYLOAD(tb[TCA_MQPRIO_MIN_RATE64]);
274 __u64 *min = min_rate64;
276 for (r = RTA_DATA(tb[TCA_MQPRIO_MIN_RATE64]);
277 RTA_OK(r, rem); r = RTA_NEXT(r, rem)) {
278 if (r->rta_type != TCA_MQPRIO_MIN_RATE64)
280 *(min++) = rta_getattr_u64(r);
282 fprintf(f, " min_rate:");
283 for (i = 0; i < qopt->num_tc; i++)
284 fprintf(f, "%s ", sprint_rate(min_rate64[i], b1));
287 if (tb[TCA_MQPRIO_MAX_RATE64]) {
289 int rem = RTA_PAYLOAD(tb[TCA_MQPRIO_MAX_RATE64]);
290 __u64 *max = max_rate64;
292 for (r = RTA_DATA(tb[TCA_MQPRIO_MAX_RATE64]);
293 RTA_OK(r, rem); r = RTA_NEXT(r, rem)) {
294 if (r->rta_type != TCA_MQPRIO_MAX_RATE64)
296 *(max++) = rta_getattr_u64(r);
298 fprintf(f, " max_rate:");
299 for (i = 0; i < qopt->num_tc; i++)
300 fprintf(f, "%s ", sprint_rate(max_rate64[i], b1));
306 struct qdisc_util mqprio_qdisc_util = {
308 .parse_qopt = mqprio_parse_opt,
309 .print_qopt = mqprio_print_opt,