]> git.proxmox.com Git - mirror_iproute2.git/blobdiff - tc/q_sfq.c
tc: fq_codel: add drop_batch parameter
[mirror_iproute2.git] / tc / q_sfq.c
index 71a3c9ac16694a67195d9366c15c3f57e0fd5c5b..2b9bbcd230b9b21d0614576ac235adc8a074175d 100644 (file)
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <syslog.h>
 #include <fcntl.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <math.h>
 
 #include "utils.h"
 #include "tc_util.h"
+#include "tc_red.h"
 
 static void explain(void)
 {
-       fprintf(stderr, "Usage: ... sfq [ limit NUMBER ] [ perturb SECS ] [ quantum BYTES ]\n");
+       fprintf(stderr,
+               "Usage: ... sfq [ limit NUMBER ] [ perturb SECS ] [ quantum BYTES ]\n"
+               "               [ divisor NUMBER ] [ flows NUMBER] [ depth NUMBER ]\n"
+               "               [ headdrop ]\n"
+               "               [ redflowlimit BYTES ] [ min BYTES ] [ max BYTES ]\n"
+               "               [ avpkt BYTES ] [ burst PACKETS ] [ probability P ]\n"
+               "               [ ecn ] [ harddrop ]\n");
 }
 
-static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
+static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n, const char *dev)
 {
-       int ok=0;
-       struct tc_sfq_qopt opt;
-
-       memset(&opt, 0, sizeof(opt));
+       int ok = 0, red = 0;
+       struct tc_sfq_qopt_v1 opt = {};
+       unsigned int burst = 0;
+       int wlog;
+       unsigned int avpkt = 1000;
+       double probability = 0.02;
 
        while (argc > 0) {
                if (strcmp(*argv, "quantum") == 0) {
                        NEXT_ARG();
-                       if (get_size(&opt.quantum, *argv)) {
+                       if (get_size(&opt.v0.quantum, *argv)) {
                                fprintf(stderr, "Illegal \"limit\"\n");
                                return -1;
                        }
                        ok++;
                } else if (strcmp(*argv, "perturb") == 0) {
                        NEXT_ARG();
-                       if (get_integer(&opt.perturb_period, *argv, 0)) {
+                       if (get_integer(&opt.v0.perturb_period, *argv, 0)) {
                                fprintf(stderr, "Illegal \"perturb\"\n");
                                return -1;
                        }
                        ok++;
                } else if (strcmp(*argv, "limit") == 0) {
                        NEXT_ARG();
-                       if (get_u32(&opt.limit, *argv, 0)) {
+                       if (get_u32(&opt.v0.limit, *argv, 0)) {
                                fprintf(stderr, "Illegal \"limit\"\n");
                                return -1;
                        }
-                       if (opt.limit < 2) {
+                       if (opt.v0.limit < 2) {
                                fprintf(stderr, "Illegal \"limit\", must be > 1\n");
                                return -1;
                        }
                        ok++;
+               } else if (strcmp(*argv, "divisor") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.v0.divisor, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"divisor\"\n");
+                               return -1;
+                       }
+                       ok++;
+               } else if (strcmp(*argv, "flows") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.v0.flows, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"flows\"\n");
+                               return -1;
+                       }
+                       ok++;
+               } else if (strcmp(*argv, "depth") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.depth, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"flows\"\n");
+                               return -1;
+                       }
+                       ok++;
+               } else if (strcmp(*argv, "headdrop") == 0) {
+                       opt.headdrop = 1;
+                       ok++;
+               } else if (strcmp(*argv, "redflowlimit") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.limit, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"redflowlimit\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "min") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.qth_min, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"min\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "max") == 0) {
+                       NEXT_ARG();
+                       if (get_u32(&opt.qth_max, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"max\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "burst") == 0) {
+                       NEXT_ARG();
+                       if (get_unsigned(&burst, *argv, 0)) {
+                               fprintf(stderr, "Illegal \"burst\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "avpkt") == 0) {
+                       NEXT_ARG();
+                       if (get_size(&avpkt, *argv)) {
+                               fprintf(stderr, "Illegal \"avpkt\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "probability") == 0) {
+                       NEXT_ARG();
+                       if (sscanf(*argv, "%lg", &probability) != 1) {
+                               fprintf(stderr, "Illegal \"probability\"\n");
+                               return -1;
+                       }
+                       red++;
+               } else if (strcmp(*argv, "ecn") == 0) {
+                       opt.flags |= TC_RED_ECN;
+                       red++;
+               } else if (strcmp(*argv, "harddrop") == 0) {
+                       opt.flags |= TC_RED_HARDDROP;
+                       red++;
                } else if (strcmp(*argv, "help") == 0) {
                        explain();
                        return -1;
@@ -71,8 +152,51 @@ static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nl
                }
                argc--; argv++;
        }
+       if (red) {
+               if (!opt.limit) {
+                       fprintf(stderr, "Required parameter (redflowlimit) is missing\n");
+                       return -1;
+               }
+               /* Compute default min/max thresholds based on
+                  Sally Floyd's recommendations:
+                  http://www.icir.org/floyd/REDparameters.txt
+               */
+               if (!opt.qth_max)
+                       opt.qth_max = opt.limit / 4;
+               if (!opt.qth_min)
+                       opt.qth_min = opt.qth_max / 3;
+               if (!burst)
+                       burst = (2 * opt.qth_min + opt.qth_max) / (3 * avpkt);
+
+               if (opt.qth_max > opt.limit) {
+                       fprintf(stderr, "\"max\" is larger than \"limit\"\n");
+                       return -1;
+               }
+
+               if (opt.qth_min >= opt.qth_max) {
+                       fprintf(stderr, "\"min\" is not smaller than \"max\"\n");
+                       return -1;
+               }
+
+               wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt);
+               if (wlog < 0) {
+                       fprintf(stderr, "SFQ: failed to calculate EWMA constant.\n");
+                       return -1;
+               }
+               if (wlog >= 10)
+                       fprintf(stderr, "SFQ: WARNING. Burst %u seems to be too large.\n", burst);
+               opt.Wlog = wlog;
 
-       if (ok)
+               wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability);
+               if (wlog < 0) {
+                       fprintf(stderr, "SFQ: failed to calculate probability.\n");
+                       return -1;
+               }
+               opt.Plog = wlog;
+               opt.max_P = probability * pow(2, 32);
+       }
+
+       if (ok || red)
                addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
        return 0;
 }
@@ -80,21 +204,68 @@ static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nl
 static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 {
        struct tc_sfq_qopt *qopt;
-       SPRINT_BUF(b1);
+       struct tc_sfq_qopt_v1 *qopt_ext = NULL;
 
+       SPRINT_BUF(b1);
+       SPRINT_BUF(b2);
+       SPRINT_BUF(b3);
        if (opt == NULL)
                return 0;
 
        if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
                return -1;
+       if (RTA_PAYLOAD(opt) >= sizeof(*qopt_ext))
+               qopt_ext = RTA_DATA(opt);
        qopt = RTA_DATA(opt);
-       fprintf(f, "limit %up ", qopt->limit);
-       fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1));
-       if (show_details) {
-               fprintf(f, "flows %u/%u ", qopt->flows, qopt->divisor);
-       }
+
+       print_uint(PRINT_ANY, "limit", "limit %up ", qopt->limit);
+       print_uint(PRINT_JSON, "quantum", NULL, qopt->quantum);
+       print_string(PRINT_FP, NULL, "quantum %s ",
+                    sprint_size(qopt->quantum, b1));
+
+       if (qopt_ext && qopt_ext->depth)
+               print_uint(PRINT_ANY, "depth", "depth %u ", qopt_ext->depth);
+       if (qopt_ext && qopt_ext->headdrop)
+               print_bool(PRINT_ANY, "headdrop", "headdrop ", true);
+       if (show_details)
+               print_uint(PRINT_ANY, "flows", "flows %u ", qopt->flows);
+
+       print_uint(PRINT_ANY, "divisor", "divisor %u ", qopt->divisor);
+
        if (qopt->perturb_period)
-               fprintf(f, "perturb %dsec ", qopt->perturb_period);
+               print_int(PRINT_ANY, "perturb", "perturb %dsec ",
+                          qopt->perturb_period);
+       if (qopt_ext && qopt_ext->qth_min) {
+               print_uint(PRINT_ANY, "ewma", "ewma %u ", qopt_ext->Wlog);
+               print_uint(PRINT_JSON, "min", NULL, qopt_ext->qth_min);
+               print_string(PRINT_FP, NULL, "min %s ",
+                            sprint_size(qopt_ext->qth_min, b2));
+               print_uint(PRINT_JSON, "max", NULL, qopt_ext->qth_max);
+               print_string(PRINT_FP, NULL, "max %s ",
+                            sprint_size(qopt_ext->qth_max, b3));
+               print_float(PRINT_ANY, "probability", "probability %lg ",
+                           qopt_ext->max_P / pow(2, 32));
+               tc_red_print_flags(qopt_ext->flags);
+               if (show_stats) {
+                       print_nl();
+                       print_uint(PRINT_ANY, "prob_mark", "  prob_mark %u",
+                                  qopt_ext->stats.prob_mark);
+                       print_uint(PRINT_ANY, "prob_mark_head",
+                                  " prob_mark_head %u",
+                                  qopt_ext->stats.prob_mark_head);
+                       print_uint(PRINT_ANY, "prob_drop", " prob_drop %u",
+                                  qopt_ext->stats.prob_drop);
+                       print_nl();
+                       print_uint(PRINT_ANY, "forced_mark",
+                                  "  forced_mark %u",
+                                  qopt_ext->stats.forced_mark);
+                       print_uint(PRINT_ANY, "forced_mark_head",
+                                  " forced_mark_head %u",
+                                  qopt_ext->stats.forced_mark_head);
+                       print_uint(PRINT_ANY, "forced_drop", " forced_drop %u",
+                                  qopt_ext->stats.forced_drop);
+               }
+       }
        return 0;
 }
 
@@ -109,8 +280,8 @@ static int sfq_print_xstats(struct qdisc_util *qu, FILE *f,
                return -1;
        st = RTA_DATA(xstats);
 
-       fprintf(f, " allot %d ", st->allot);
-       fprintf(f, "\n");
+       print_int(PRINT_ANY, "allot", "  allot %d", st->allot);
+
        return 0;
 }