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d5ddb441a5
Many tc modules were printing error messages to stdout. This is problematic if using JSON or other output formats. Change all these places to use fprintf(stderr, ...) instead. Also, remove unnecessary initialization and places where else is used after error return. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/*
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* m_connmark.c Connection tracking marking import
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*
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* Copyright (c) 2011 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, see <http://www.gnu.org/licenses>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "utils.h"
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#include "tc_util.h"
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#include <linux/tc_act/tc_connmark.h>
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static void
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explain(void)
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{
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fprintf(stderr,
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"Usage: ... connmark [zone ZONE] [CONTROL] [index <INDEX>]\n"
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"where :\n"
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"\tZONE is the conntrack zone\n"
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"\tCONTROL := reclassify | pipe | drop | continue | ok |\n"
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"\t goto chain <CHAIN_INDEX>\n");
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}
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static void
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usage(void)
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{
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explain();
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exit(-1);
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}
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static int
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parse_connmark(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
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struct nlmsghdr *n)
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{
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struct tc_connmark sel = {};
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char **argv = *argv_p;
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int argc = *argc_p;
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int ok = 0;
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struct rtattr *tail;
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while (argc > 0) {
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if (matches(*argv, "connmark") == 0) {
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ok = 1;
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argc--;
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argv++;
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} else if (matches(*argv, "help") == 0) {
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usage();
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} else {
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break;
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}
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}
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if (!ok) {
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explain();
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return -1;
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}
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if (argc) {
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if (matches(*argv, "zone") == 0) {
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NEXT_ARG();
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if (get_u16(&sel.zone, *argv, 10)) {
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fprintf(stderr, "connmark: Illegal \"zone\"\n");
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return -1;
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}
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argc--;
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argv++;
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}
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}
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parse_action_control_dflt(&argc, &argv, &sel.action, false, TC_ACT_PIPE);
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if (argc) {
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if (matches(*argv, "index") == 0) {
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NEXT_ARG();
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if (get_u32(&sel.index, *argv, 10)) {
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fprintf(stderr, "connmark: Illegal \"index\"\n");
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return -1;
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}
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argc--;
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argv++;
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}
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}
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tail = addattr_nest(n, MAX_MSG, tca_id);
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addattr_l(n, MAX_MSG, TCA_CONNMARK_PARMS, &sel, sizeof(sel));
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addattr_nest_end(n, tail);
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*argc_p = argc;
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*argv_p = argv;
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return 0;
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}
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static int print_connmark(struct action_util *au, FILE *f, struct rtattr *arg)
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{
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struct rtattr *tb[TCA_CONNMARK_MAX + 1];
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struct tc_connmark *ci;
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if (arg == NULL)
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return -1;
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parse_rtattr_nested(tb, TCA_CONNMARK_MAX, arg);
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if (tb[TCA_CONNMARK_PARMS] == NULL) {
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fprintf(stderr, "Missing connmark parameters\n");
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return -1;
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}
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ci = RTA_DATA(tb[TCA_CONNMARK_PARMS]);
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print_string(PRINT_ANY, "kind", "%s ", "connmark");
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print_uint(PRINT_ANY, "zone", "zone %u", ci->zone);
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print_action_control(f, " ", ci->action, "");
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print_string(PRINT_FP, NULL, "%s", _SL_);
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print_uint(PRINT_ANY, "index", "\t index %u", ci->index);
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print_int(PRINT_ANY, "ref", " ref %d", ci->refcnt);
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print_int(PRINT_ANY, "bind", " bind %d", ci->bindcnt);
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if (show_stats) {
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if (tb[TCA_CONNMARK_TM]) {
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struct tcf_t *tm = RTA_DATA(tb[TCA_CONNMARK_TM]);
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print_tm(f, tm);
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}
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}
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print_string(PRINT_FP, NULL, "%s", _SL_);
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return 0;
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}
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struct action_util connmark_action_util = {
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.id = "connmark",
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.parse_aopt = parse_connmark,
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.print_aopt = print_connmark,
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};
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