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-rw-r--r--tc/q_cbs.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/tc/q_cbs.c b/tc/q_cbs.c
new file mode 100644
index 0000000..13bb08e
--- /dev/null
+++ b/tc/q_cbs.c
@@ -0,0 +1,141 @@
+/*
+ * q_cbs.c CBS.
+ *
+ * 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: Vinicius Costa Gomes <vinicius.gomes@intel.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: ... cbs hicredit BYTES locredit BYTES sendslope BPS idleslope BPS\n"
+ " [offload 0|1]\n");
+}
+
+static void explain1(const char *arg, const char *val)
+{
+ fprintf(stderr, "cbs: illegal value for \"%s\": \"%s\"\n", arg, val);
+}
+
+static int cbs_parse_opt(struct qdisc_util *qu, int argc,
+ char **argv, struct nlmsghdr *n, const char *dev)
+{
+ struct tc_cbs_qopt opt = {};
+ struct rtattr *tail;
+
+ while (argc > 0) {
+ if (matches(*argv, "offload") == 0) {
+ NEXT_ARG();
+ if (opt.offload) {
+ fprintf(stderr, "cbs: duplicate \"offload\" specification\n");
+ return -1;
+ }
+ if (get_u8(&opt.offload, *argv, 0)) {
+ explain1("offload", *argv);
+ return -1;
+ }
+ } else if (matches(*argv, "hicredit") == 0) {
+ NEXT_ARG();
+ if (opt.hicredit) {
+ fprintf(stderr, "cbs: duplicate \"hicredit\" specification\n");
+ return -1;
+ }
+ if (get_s32(&opt.hicredit, *argv, 0)) {
+ explain1("hicredit", *argv);
+ return -1;
+ }
+ } else if (matches(*argv, "locredit") == 0) {
+ NEXT_ARG();
+ if (opt.locredit) {
+ fprintf(stderr, "cbs: duplicate \"locredit\" specification\n");
+ return -1;
+ }
+ if (get_s32(&opt.locredit, *argv, 0)) {
+ explain1("locredit", *argv);
+ return -1;
+ }
+ } else if (matches(*argv, "sendslope") == 0) {
+ NEXT_ARG();
+ if (opt.sendslope) {
+ fprintf(stderr, "cbs: duplicate \"sendslope\" specification\n");
+ return -1;
+ }
+ if (get_s32(&opt.sendslope, *argv, 0)) {
+ explain1("sendslope", *argv);
+ return -1;
+ }
+ } else if (matches(*argv, "idleslope") == 0) {
+ NEXT_ARG();
+ if (opt.idleslope) {
+ fprintf(stderr, "cbs: duplicate \"idleslope\" specification\n");
+ return -1;
+ }
+ if (get_s32(&opt.idleslope, *argv, 0)) {
+ explain1("idleslope", *argv);
+ return -1;
+ }
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "cbs: unknown parameter \"%s\"\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--; argv++;
+ }
+
+ tail = addattr_nest(n, 1024, TCA_OPTIONS);
+ addattr_l(n, 2024, TCA_CBS_PARMS, &opt, sizeof(opt));
+ addattr_nest_end(n, tail);
+ return 0;
+}
+
+static int cbs_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct rtattr *tb[TCA_CBS_MAX+1];
+ struct tc_cbs_qopt *qopt;
+
+ if (opt == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_CBS_MAX, opt);
+
+ if (tb[TCA_CBS_PARMS] == NULL)
+ return -1;
+
+ qopt = RTA_DATA(tb[TCA_CBS_PARMS]);
+ if (RTA_PAYLOAD(tb[TCA_CBS_PARMS]) < sizeof(*qopt))
+ return -1;
+
+ print_int(PRINT_ANY, "hicredit", "hicredit %d ", qopt->hicredit);
+ print_int(PRINT_ANY, "locredit", "locredit %d ", qopt->locredit);
+ print_int(PRINT_ANY, "sendslope", "sendslope %d ", qopt->sendslope);
+ print_int(PRINT_ANY, "idleslope", "idleslope %d ", qopt->idleslope);
+ print_int(PRINT_ANY, "offload", "offload %d ", qopt->offload);
+
+ return 0;
+}
+
+struct qdisc_util cbs_qdisc_util = {
+ .id = "cbs",
+ .parse_qopt = cbs_parse_opt,
+ .print_qopt = cbs_print_opt,
+};