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-rw-r--r--tc/q_fq_pie.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/tc/q_fq_pie.c b/tc/q_fq_pie.c
new file mode 100644
index 0000000..9cbef47
--- /dev/null
+++ b/tc/q_fq_pie.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Flow Queue PIE
+ *
+ * Copyright (C) 2019 Mohit P. Tahiliani <tahiliani@nitk.edu.in>
+ * Copyright (C) 2019 Sachin D. Patil <sdp.sachin@gmail.com>
+ * Copyright (C) 2019 V. Saicharan <vsaicharan1998@gmail.com>
+ * Copyright (C) 2019 Mohit Bhasi <mohitbhasi1998@gmail.com>
+ * Copyright (C) 2019 Leslie Monis <lesliemonis@gmail.com>
+ * Copyright (C) 2019 Gautam Ramakrishnan <gautamramk@gmail.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.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: ... fq_pie [ limit PACKETS ] [ flows NUMBER ]\n"
+ " [ target TIME ] [ tupdate TIME ]\n"
+ " [ alpha NUMBER ] [ beta NUMBER ]\n"
+ " [ quantum BYTES ] [ memory_limit BYTES ]\n"
+ " [ ecn_prob PERCENTAGE ] [ [no]ecn ]\n"
+ " [ [no]bytemode ] [ [no_]dq_rate_estimator ]\n");
+}
+
+#define ALPHA_MAX 32
+#define BETA_MAX 32
+
+static int fq_pie_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+ struct nlmsghdr *n, const char *dev)
+{
+ unsigned int limit = 0;
+ unsigned int flows = 0;
+ unsigned int target = 0;
+ unsigned int tupdate = 0;
+ unsigned int alpha = 0;
+ unsigned int beta = 0;
+ unsigned int quantum = 0;
+ unsigned int memory_limit = 0;
+ unsigned int ecn_prob = 0;
+ int ecn = -1;
+ int bytemode = -1;
+ int dq_rate_estimator = -1;
+ struct rtattr *tail;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "limit") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&limit, *argv, 0)) {
+ fprintf(stderr, "Illegal \"limit\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "flows") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&flows, *argv, 0)) {
+ fprintf(stderr, "Illegal \"flows\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "target") == 0) {
+ NEXT_ARG();
+ if (get_time(&target, *argv)) {
+ fprintf(stderr, "Illegal \"target\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "tupdate") == 0) {
+ NEXT_ARG();
+ if (get_time(&tupdate, *argv)) {
+ fprintf(stderr, "Illegal \"tupdate\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "alpha") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&alpha, *argv, 0) ||
+ alpha > ALPHA_MAX) {
+ fprintf(stderr, "Illegal \"alpha\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "beta") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&beta, *argv, 0) ||
+ beta > BETA_MAX) {
+ fprintf(stderr, "Illegal \"beta\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "quantum") == 0) {
+ NEXT_ARG();
+ if (get_size(&quantum, *argv)) {
+ fprintf(stderr, "Illegal \"quantum\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "memory_limit") == 0) {
+ NEXT_ARG();
+ if (get_size(&memory_limit, *argv)) {
+ fprintf(stderr, "Illegal \"memory_limit\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "ecn_prob") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&ecn_prob, *argv, 0) ||
+ ecn_prob >= 100) {
+ fprintf(stderr, "Illegal \"ecn_prob\"\n");
+ return -1;
+ }
+ } else if (strcmp(*argv, "ecn") == 0) {
+ ecn = 1;
+ } else if (strcmp(*argv, "noecn") == 0) {
+ ecn = 0;
+ } else if (strcmp(*argv, "bytemode") == 0) {
+ bytemode = 1;
+ } else if (strcmp(*argv, "nobytemode") == 0) {
+ bytemode = 0;
+ } else if (strcmp(*argv, "dq_rate_estimator") == 0) {
+ dq_rate_estimator = 1;
+ } else if (strcmp(*argv, "no_dq_rate_estimator") == 0) {
+ dq_rate_estimator = 0;
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+
+ argc--;
+ argv++;
+ }
+
+ tail = addattr_nest(n, 1024, TCA_OPTIONS | NLA_F_NESTED);
+ if (limit)
+ addattr_l(n, 1024, TCA_FQ_PIE_LIMIT, &limit, sizeof(limit));
+ if (flows)
+ addattr_l(n, 1024, TCA_FQ_PIE_FLOWS, &flows, sizeof(flows));
+ if (target)
+ addattr_l(n, 1024, TCA_FQ_PIE_TARGET, &target, sizeof(target));
+ if (tupdate)
+ addattr_l(n, 1024, TCA_FQ_PIE_TUPDATE, &tupdate,
+ sizeof(tupdate));
+ if (alpha)
+ addattr_l(n, 1024, TCA_FQ_PIE_ALPHA, &alpha, sizeof(alpha));
+ if (beta)
+ addattr_l(n, 1024, TCA_FQ_PIE_BETA, &beta, sizeof(beta));
+ if (quantum)
+ addattr_l(n, 1024, TCA_FQ_PIE_QUANTUM, &quantum,
+ sizeof(quantum));
+ if (memory_limit)
+ addattr_l(n, 1024, TCA_FQ_PIE_MEMORY_LIMIT, &memory_limit,
+ sizeof(memory_limit));
+ if (ecn_prob)
+ addattr_l(n, 1024, TCA_FQ_PIE_ECN_PROB, &ecn_prob,
+ sizeof(ecn_prob));
+ if (ecn != -1)
+ addattr_l(n, 1024, TCA_FQ_PIE_ECN, &ecn, sizeof(ecn));
+ if (bytemode != -1)
+ addattr_l(n, 1024, TCA_FQ_PIE_BYTEMODE, &bytemode,
+ sizeof(bytemode));
+ if (dq_rate_estimator != -1)
+ addattr_l(n, 1024, TCA_FQ_PIE_DQ_RATE_ESTIMATOR,
+ &dq_rate_estimator, sizeof(dq_rate_estimator));
+ addattr_nest_end(n, tail);
+
+ return 0;
+}
+
+static int fq_pie_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct rtattr *tb[TCA_FQ_PIE_MAX + 1];
+ unsigned int limit = 0;
+ unsigned int flows = 0;
+ unsigned int target = 0;
+ unsigned int tupdate = 0;
+ unsigned int alpha = 0;
+ unsigned int beta = 0;
+ unsigned int quantum = 0;
+ unsigned int memory_limit = 0;
+ unsigned int ecn_prob = 0;
+ int ecn = -1;
+ int bytemode = -1;
+ int dq_rate_estimator = -1;
+
+ SPRINT_BUF(b1);
+
+ if (opt == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_FQ_PIE_MAX, opt);
+
+ if (tb[TCA_FQ_PIE_LIMIT] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_LIMIT]) >= sizeof(__u32)) {
+ limit = rta_getattr_u32(tb[TCA_FQ_PIE_LIMIT]);
+ print_uint(PRINT_ANY, "limit", "limit %up ", limit);
+ }
+ if (tb[TCA_FQ_PIE_FLOWS] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_FLOWS]) >= sizeof(__u32)) {
+ flows = rta_getattr_u32(tb[TCA_FQ_PIE_FLOWS]);
+ print_uint(PRINT_ANY, "flows", "flows %u ", flows);
+ }
+ if (tb[TCA_FQ_PIE_TARGET] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_TARGET]) >= sizeof(__u32)) {
+ target = rta_getattr_u32(tb[TCA_FQ_PIE_TARGET]);
+ print_uint(PRINT_JSON, "target", NULL, target);
+ print_string(PRINT_FP, NULL, "target %s ",
+ sprint_time(target, b1));
+ }
+ if (tb[TCA_FQ_PIE_TUPDATE] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_TUPDATE]) >= sizeof(__u32)) {
+ tupdate = rta_getattr_u32(tb[TCA_FQ_PIE_TUPDATE]);
+ print_uint(PRINT_JSON, "tupdate", NULL, tupdate);
+ print_string(PRINT_FP, NULL, "tupdate %s ",
+ sprint_time(tupdate, b1));
+ }
+ if (tb[TCA_FQ_PIE_ALPHA] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_ALPHA]) >= sizeof(__u32)) {
+ alpha = rta_getattr_u32(tb[TCA_FQ_PIE_ALPHA]);
+ print_uint(PRINT_ANY, "alpha", "alpha %u ", alpha);
+ }
+ if (tb[TCA_FQ_PIE_BETA] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_BETA]) >= sizeof(__u32)) {
+ beta = rta_getattr_u32(tb[TCA_FQ_PIE_BETA]);
+ print_uint(PRINT_ANY, "beta", "beta %u ", beta);
+ }
+ if (tb[TCA_FQ_PIE_QUANTUM] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_QUANTUM]) >= sizeof(__u32)) {
+ quantum = rta_getattr_u32(tb[TCA_FQ_PIE_QUANTUM]);
+ print_size(PRINT_ANY, "quantum", "quantum %s ", quantum);
+ }
+ if (tb[TCA_FQ_PIE_MEMORY_LIMIT] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_MEMORY_LIMIT]) >= sizeof(__u32)) {
+ memory_limit = rta_getattr_u32(tb[TCA_FQ_PIE_MEMORY_LIMIT]);
+ print_size(PRINT_ANY, "memory_limit", "memory_limit %s ",
+ memory_limit);
+ }
+ if (tb[TCA_FQ_PIE_ECN_PROB] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_ECN_PROB]) >= sizeof(__u32)) {
+ ecn_prob = rta_getattr_u32(tb[TCA_FQ_PIE_ECN_PROB]);
+ print_uint(PRINT_ANY, "ecn_prob", "ecn_prob %u ", ecn_prob);
+ }
+ if (tb[TCA_FQ_PIE_ECN] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_ECN]) >= sizeof(__u32)) {
+ ecn = rta_getattr_u32(tb[TCA_FQ_PIE_ECN]);
+ if (ecn)
+ print_bool(PRINT_ANY, "ecn", "ecn ", true);
+ }
+ if (tb[TCA_FQ_PIE_BYTEMODE] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_BYTEMODE]) >= sizeof(__u32)) {
+ bytemode = rta_getattr_u32(tb[TCA_FQ_PIE_BYTEMODE]);
+ if (bytemode)
+ print_bool(PRINT_ANY, "bytemode", "bytemode ", true);
+ }
+ if (tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR] &&
+ RTA_PAYLOAD(tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR]) >= sizeof(__u32)) {
+ dq_rate_estimator =
+ rta_getattr_u32(tb[TCA_FQ_PIE_DQ_RATE_ESTIMATOR]);
+ if (dq_rate_estimator)
+ print_bool(PRINT_ANY, "dq_rate_estimator",
+ "dq_rate_estimator ", true);
+ }
+
+ return 0;
+}
+
+static int fq_pie_print_xstats(struct qdisc_util *qu, FILE *f,
+ struct rtattr *xstats)
+{
+ struct tc_fq_pie_xstats _st = {}, *st;
+
+ if (xstats == NULL)
+ return 0;
+
+ st = RTA_DATA(xstats);
+ if (RTA_PAYLOAD(xstats) < sizeof(*st)) {
+ memcpy(&_st, st, RTA_PAYLOAD(xstats));
+ st = &_st;
+ }
+
+ print_uint(PRINT_ANY, "pkts_in", " pkts_in %u",
+ st->packets_in);
+ print_uint(PRINT_ANY, "overlimit", " overlimit %u",
+ st->overlimit);
+ print_uint(PRINT_ANY, "overmemory", " overmemory %u",
+ st->overmemory);
+ print_uint(PRINT_ANY, "dropped", " dropped %u",
+ st->dropped);
+ print_uint(PRINT_ANY, "ecn_mark", " ecn_mark %u",
+ st->ecn_mark);
+ print_nl();
+ print_uint(PRINT_ANY, "new_flow_count", " new_flow_count %u",
+ st->new_flow_count);
+ print_uint(PRINT_ANY, "new_flows_len", " new_flows_len %u",
+ st->new_flows_len);
+ print_uint(PRINT_ANY, "old_flows_len", " old_flows_len %u",
+ st->old_flows_len);
+ print_uint(PRINT_ANY, "memory_used", " memory_used %u",
+ st->memory_usage);
+
+ return 0;
+
+}
+
+struct qdisc_util fq_pie_qdisc_util = {
+ .id = "fq_pie",
+ .parse_qopt = fq_pie_parse_opt,
+ .print_qopt = fq_pie_print_opt,
+ .print_xstats = fq_pie_print_xstats,
+};