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--- a/tc/Makefile
+++ b/tc/Makefile
@@ -13,6 +13,7 @@ SHARED_LIBS ?= y
TCMODULES :=
TCMODULES += q_fifo.o
TCMODULES += q_sfq.o
+TCMODULES += q_esfq.o
TCMODULES += q_red.o
TCMODULES += q_prio.o
TCMODULES += q_tbf.o
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -226,6 +226,33 @@ struct tc_sfq_xstats {
__s32 allot;
};
+/* ESFQ section */
+
+enum
+{
+ /* traditional */
+ TCA_SFQ_HASH_CLASSIC,
+ TCA_SFQ_HASH_DST,
+ TCA_SFQ_HASH_SRC,
+ TCA_SFQ_HASH_FWMARK,
+ /* conntrack */
+ TCA_SFQ_HASH_CTORIGDST,
+ TCA_SFQ_HASH_CTORIGSRC,
+ TCA_SFQ_HASH_CTREPLDST,
+ TCA_SFQ_HASH_CTREPLSRC,
+ TCA_SFQ_HASH_CTNATCHG,
+};
+
+struct tc_esfq_qopt
+{
+ unsigned quantum; /* Bytes per round allocated to flow */
+ int perturb_period; /* Period of hash perturbation */
+ __u32 limit; /* Maximal packets in queue */
+ unsigned divisor; /* Hash divisor */
+ unsigned flows; /* Maximal number of flows */
+ unsigned hash_kind; /* Hash function to use for flow identification */
+};
+
/* RED section */
enum {
--- /dev/null
+++ b/tc/q_esfq.c
@@ -0,0 +1,200 @@
+/*
+ * q_esfq.c ESFQ.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * Changes: Alexander Atanasov, <alex@ssi.bg>
+ * Alexander Clouter, <alex@digriz.org.uk>
+ * Corey Hickey, <bugfood-c@fatooh.org>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <math.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+ fprintf(stderr, "Usage: ... esfq [ perturb SECS ] [ quantum BYTES ] [ depth FLOWS ]\n\t[ divisor HASHBITS ] [ limit PKTS ] [ hash HASHTYPE]\n");
+ fprintf(stderr,"Where: \n");
+ fprintf(stderr,"HASHTYPE := { classic | src | dst | ctorigdst | ctorigsrc | ctrepldst | ctreplsrc | ctnatchg }\n");
+}
+
+#define usage() return(-1)
+
+static int esfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
+{
+ int ok=0;
+ struct tc_esfq_qopt opt;
+
+ memset(&opt, 0, sizeof(opt));
+
+ opt.hash_kind= TCA_SFQ_HASH_CLASSIC;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "quantum") == 0) {
+ NEXT_ARG();
+ if (get_size(&opt.quantum, *argv)) {
+ fprintf(stderr, "Illegal \"quantum\"\n");
+ return -1;
+ }
+ ok++;
+ } else if (strcmp(*argv, "perturb") == 0) {
+ NEXT_ARG();
+ if (get_integer(&opt.perturb_period, *argv, 0)) {
+ fprintf(stderr, "Illegal \"perturb\"\n");
+ return -1;
+ }
+ ok++;
+ } else if (strcmp(*argv, "depth") == 0) {
+ NEXT_ARG();
+ if (get_integer((int *) &opt.flows, *argv, 0)) {
+ fprintf(stderr, "Illegal \"depth\"\n");
+ return -1;
+ }
+ ok++;
+ } else if (strcmp(*argv, "divisor") == 0) {
+ NEXT_ARG();
+ if (get_integer((int *) &opt.divisor, *argv, 0)) {
+ fprintf(stderr, "Illegal \"divisor\"\n");
+ return -1;
+ }
+ if(opt.divisor >= 14) {
+ fprintf(stderr, "Illegal \"divisor\": must be < 14\n");
+ return -1;
+ }
+ opt.divisor=pow(2,opt.divisor);
+ ok++;
+ } else if (strcmp(*argv, "limit") == 0) {
+ NEXT_ARG();
+ if (get_integer((int *) &opt.limit, *argv, 0)) {
+ fprintf(stderr, "Illegal \"limit\"\n");
+ return -1;
+ }
+ ok++;
+ } else if (strcmp(*argv, "hash") == 0) {
+ NEXT_ARG();
+ if(strcmp(*argv, "classic") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CLASSIC;
+ } else
+ if(strcmp(*argv, "dst") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_DST;
+ } else
+ if(strcmp(*argv, "src") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_SRC;
+ } else
+ if(strcmp(*argv, "ctorigsrc") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CTORIGSRC;
+ } else
+ if(strcmp(*argv, "ctorigdst") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CTORIGDST;
+ } else
+ if(strcmp(*argv, "ctreplsrc") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CTREPLSRC;
+ } else
+ if(strcmp(*argv, "ctrepldst") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CTREPLDST;
+ } else
+ if(strcmp(*argv, "ctnatchg") == 0) {
+ opt.hash_kind= TCA_SFQ_HASH_CTNATCHG;
+ } else {
+ fprintf(stderr, "Illegal \"hash\"\n");
+ explain();
+ return -1;
+ }
+ ok++;
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--; argv++;
+ }
+
+ if (ok)
+ addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
+ return 0;
+}
+
+static int esfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct tc_esfq_qopt *qopt;
+ SPRINT_BUF(b1);
+
+ if (opt == NULL)
+ return 0;
+
+ if (RTA_PAYLOAD(opt) < sizeof(*qopt))
+ return -1;
+ qopt = RTA_DATA(opt);
+ fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1));
+ if (show_details) {
+ fprintf(f, "limit %up flows %u/%u ",
+ qopt->limit, qopt->flows, qopt->divisor);
+ }
+ if (qopt->perturb_period)
+ fprintf(f, "perturb %dsec ", qopt->perturb_period);
+
+ fprintf(f,"hash: ");
+ switch(qopt->hash_kind)
+ {
+ case TCA_SFQ_HASH_CLASSIC:
+ fprintf(f,"classic");
+ break;
+ case TCA_SFQ_HASH_DST:
+ fprintf(f,"dst");
+ break;
+ case TCA_SFQ_HASH_SRC:
+ fprintf(f,"src");
+ break;
+ case TCA_SFQ_HASH_CTORIGSRC:
+ fprintf(f,"ctorigsrc");
+ break;
+ case TCA_SFQ_HASH_CTORIGDST:
+ fprintf(f,"ctorigdst");
+ break;
+ case TCA_SFQ_HASH_CTREPLSRC:
+ fprintf(f,"ctreplsrc");
+ break;
+ case TCA_SFQ_HASH_CTREPLDST:
+ fprintf(f,"ctrepldst");
+ break;
+ case TCA_SFQ_HASH_CTNATCHG:
+ fprintf(f,"ctnatchg");
+ break;
+ default:
+ fprintf(f,"Unknown");
+ }
+ return 0;
+}
+
+static int esfq_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
+{
+ return 0;
+}
+
+
+struct qdisc_util esfq_qdisc_util = {
+ .id = "esfq",
+ .parse_qopt = esfq_parse_opt,
+ .print_qopt = esfq_print_opt,
+ .print_xstats = esfq_print_xstats,
+};
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