#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
+#include <math.h>
#include "utils.h"
#include "tc_util.h"
static void explain(void)
{
- fprintf(stderr, "Usage: ... red limit BYTES min BYTES max BYTES avpkt BYTES burst PACKETS\n");
- fprintf(stderr, " probability PROBABILITY bandwidth KBPS [ ecn ]\n");
+ fprintf(stderr, "Usage: ... red limit BYTES [min BYTES] [max BYTES] avpkt BYTES [burst PACKETS]\n");
+ fprintf(stderr, " [adaptive] [probability PROBABILITY] bandwidth KBPS\n");
+ fprintf(stderr, " [ecn] [harddrop]\n");
}
-#define usage() return(-1)
-
static int red_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
- int ok=0;
struct tc_red_qopt opt;
unsigned burst = 0;
unsigned avpkt = 0;
double probability = 0.02;
unsigned rate = 0;
- int ecn_ok = 0;
int wlog;
__u8 sbuf[256];
+ __u32 max_P;
struct rtattr *tail;
memset(&opt, 0, sizeof(opt));
fprintf(stderr, "Illegal \"limit\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "min") == 0) {
NEXT_ARG();
if (get_size(&opt.qth_min, *argv)) {
fprintf(stderr, "Illegal \"min\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "max") == 0) {
NEXT_ARG();
if (get_size(&opt.qth_max, *argv)) {
fprintf(stderr, "Illegal \"max\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "burst") == 0) {
NEXT_ARG();
if (get_unsigned(&burst, *argv, 0)) {
fprintf(stderr, "Illegal \"burst\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "avpkt") == 0) {
NEXT_ARG();
if (get_size(&avpkt, *argv)) {
fprintf(stderr, "Illegal \"avpkt\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "probability") == 0) {
NEXT_ARG();
if (sscanf(*argv, "%lg", &probability) != 1) {
fprintf(stderr, "Illegal \"probability\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "bandwidth") == 0) {
NEXT_ARG();
if (get_rate(&rate, *argv)) {
fprintf(stderr, "Illegal \"bandwidth\"\n");
return -1;
}
- ok++;
} else if (strcmp(*argv, "ecn") == 0) {
- ecn_ok = 1;
- ok++;
+ opt.flags |= TC_RED_ECN;
+ } else if (strcmp(*argv, "harddrop") == 0) {
+ opt.flags |= TC_RED_HARDDROP;
+ } else if (strcmp(*argv, "adaptative") == 0) {
+ opt.flags |= TC_RED_ADAPTATIVE;
+ } else if (strcmp(*argv, "adaptive") == 0) {
+ opt.flags |= TC_RED_ADAPTATIVE;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
argc--; argv++;
}
- if (!ok)
- return 0;
-
if (rate == 0)
get_rate(&rate, "10Mbit");
- if (!opt.qth_min || !opt.qth_max || !burst || !opt.limit || !avpkt) {
- fprintf(stderr, "Required parameter (min, max, burst, limit, avpket) is missing\n");
+ if (!opt.limit || !avpkt) {
+ fprintf(stderr, "RED: Required parameter (limit, avpkt) 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.qth_min ? opt.qth_min * 3 : 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 ((wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt)) < 0) {
fprintf(stderr, "RED: failed to calculate EWMA constant.\n");
return -1;
}
if (wlog >= 10)
- fprintf(stderr, "RED: WARNING. Burst %d seems to be to large.\n", burst);
+ fprintf(stderr, "RED: WARNING. Burst %d seems to be too large.\n", burst);
opt.Wlog = wlog;
if ((wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability)) < 0) {
fprintf(stderr, "RED: failed to calculate probability.\n");
return -1;
}
opt.Scell_log = wlog;
- if (ecn_ok) {
-#ifdef TC_RED_ECN
- opt.flags |= TC_RED_ECN;
-#else
- fprintf(stderr, "RED: ECN support is missing in this binary.\n");
- return -1;
-#endif
- }
tail = NLMSG_TAIL(n);
addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
addattr_l(n, 1024, TCA_RED_PARMS, &opt, sizeof(opt));
addattr_l(n, 1024, TCA_RED_STAB, sbuf, 256);
+ max_P = probability * pow(2, 32);
+ addattr_l(n, 1024, TCA_RED_MAX_P, &max_P, sizeof(max_P));
tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
return 0;
}
static int red_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
- struct rtattr *tb[TCA_RED_STAB+1];
+ struct rtattr *tb[TCA_RED_MAX + 1];
struct tc_red_qopt *qopt;
+ __u32 max_P = 0;
SPRINT_BUF(b1);
SPRINT_BUF(b2);
SPRINT_BUF(b3);
if (opt == NULL)
return 0;
- memset(tb, 0, sizeof(tb));
- parse_rtattr(tb, TCA_RED_STAB, RTA_DATA(opt), RTA_PAYLOAD(opt));
+ parse_rtattr_nested(tb, TCA_RED_MAX, opt);
if (tb[TCA_RED_PARMS] == NULL)
return -1;
qopt = RTA_DATA(tb[TCA_RED_PARMS]);
if (RTA_PAYLOAD(tb[TCA_RED_PARMS]) < sizeof(*qopt))
return -1;
+
+ if (tb[TCA_RED_MAX_P] &&
+ RTA_PAYLOAD(tb[TCA_RED_MAX_P]) >= sizeof(__u32))
+ max_P = rta_getattr_u32(tb[TCA_RED_MAX_P]);
+
fprintf(f, "limit %s min %s max %s ",
sprint_size(qopt->limit, b1),
sprint_size(qopt->qth_min, b2),
sprint_size(qopt->qth_max, b3));
-#ifdef TC_RED_ECN
if (qopt->flags & TC_RED_ECN)
fprintf(f, "ecn ");
-#endif
+ if (qopt->flags & TC_RED_HARDDROP)
+ fprintf(f, "harddrop ");
+ if (qopt->flags & TC_RED_ADAPTATIVE)
+ fprintf(f, "adaptive ");
if (show_details) {
- fprintf(f, "ewma %u Plog %u Scell_log %u",
- qopt->Wlog, qopt->Plog, qopt->Scell_log);
+ fprintf(f, "ewma %u ", qopt->Wlog);
+ if (max_P)
+ fprintf(f, "probability %lg ", max_P / pow(2, 32));
+ else
+ fprintf(f, "Plog %u ", qopt->Plog);
+ fprintf(f, "Scell_log %u", qopt->Scell_log);
}
return 0;
}
fprintf(f, " marked %u early %u pdrop %u other %u",
st->marked, st->early, st->pdrop, st->other);
return 0;
-
+
#endif
return 0;
}
projects / lisovros / iproute2_canprio.git / blobdiff