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/*
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* tc_qdisc.c "tc qdisc".
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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* J Hadi Salim: Extension to ingress
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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 <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <math.h>
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#include <malloc.h>
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#include "utils.h"
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#include "tc_util.h"
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#include "tc_common.h"
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static int usage(void)
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{
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fprintf(stderr,
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"Usage: tc qdisc [ add | del | replace | change | show ] dev STRING\n"
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" [ handle QHANDLE ] [ root | ingress | clsact | parent CLASSID ]\n"
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" [ estimator INTERVAL TIME_CONSTANT ]\n"
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" [ stab [ help | STAB_OPTIONS] ]\n"
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" [ ingress_block BLOCK_INDEX ] [ egress_block BLOCK_INDEX ]\n"
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" [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n"
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"\n"
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" tc qdisc { show | list } [ dev STRING ] [ QDISC_ID ] [ invisible ]\n"
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"Where:\n"
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"QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | etc. }\n"
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"OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n"
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"STAB_OPTIONS := ... try tc qdisc add stab help\n"
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"QDISC_ID := { root | ingress | handle QHANDLE | parent CLASSID }\n");
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return -1;
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}
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static int tc_qdisc_modify(int cmd, unsigned int flags, int argc, char **argv)
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{
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struct qdisc_util *q = NULL;
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struct tc_estimator est = {};
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struct {
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struct tc_sizespec szopts;
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__u16 *data;
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} stab = {};
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char d[IFNAMSIZ] = {};
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char k[FILTER_NAMESZ] = {};
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struct {
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struct nlmsghdr n;
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struct tcmsg t;
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char buf[TCA_BUF_MAX];
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} req = {
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.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
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.n.nlmsg_flags = NLM_F_REQUEST | flags,
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.n.nlmsg_type = cmd,
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.t.tcm_family = AF_UNSPEC,
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};
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__u32 ingress_block = 0;
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__u32 egress_block = 0;
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while (argc > 0) {
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if (strcmp(*argv, "dev") == 0) {
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NEXT_ARG();
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if (d[0])
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duparg("dev", *argv);
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strncpy(d, *argv, sizeof(d)-1);
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} else if (strcmp(*argv, "handle") == 0) {
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__u32 handle;
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if (req.t.tcm_handle)
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duparg("handle", *argv);
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NEXT_ARG();
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if (get_qdisc_handle(&handle, *argv))
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invarg("invalid qdisc ID", *argv);
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req.t.tcm_handle = handle;
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} else if (strcmp(*argv, "root") == 0) {
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if (req.t.tcm_parent) {
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fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
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return -1;
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}
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req.t.tcm_parent = TC_H_ROOT;
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} else if (strcmp(*argv, "clsact") == 0) {
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if (req.t.tcm_parent) {
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fprintf(stderr, "Error: \"clsact\" is a duplicate parent ID\n");
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return -1;
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}
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req.t.tcm_parent = TC_H_CLSACT;
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strncpy(k, "clsact", sizeof(k) - 1);
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q = get_qdisc_kind(k);
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req.t.tcm_handle = TC_H_MAKE(TC_H_CLSACT, 0);
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NEXT_ARG_FWD();
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break;
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} else if (strcmp(*argv, "ingress") == 0) {
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if (req.t.tcm_parent) {
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fprintf(stderr, "Error: \"ingress\" is a duplicate parent ID\n");
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return -1;
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}
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req.t.tcm_parent = TC_H_INGRESS;
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strncpy(k, "ingress", sizeof(k) - 1);
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q = get_qdisc_kind(k);
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req.t.tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
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NEXT_ARG_FWD();
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break;
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} else if (strcmp(*argv, "parent") == 0) {
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__u32 handle;
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NEXT_ARG();
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if (req.t.tcm_parent)
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duparg("parent", *argv);
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if (get_tc_classid(&handle, *argv))
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invarg("invalid parent ID", *argv);
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req.t.tcm_parent = handle;
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} else if (matches(*argv, "estimator") == 0) {
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if (parse_estimator(&argc, &argv, &est))
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return -1;
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} else if (matches(*argv, "stab") == 0) {
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if (parse_size_table(&argc, &argv, &stab.szopts) < 0)
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return -1;
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continue;
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} else if (matches(*argv, "ingress_block") == 0) {
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NEXT_ARG();
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if (get_u32(&ingress_block, *argv, 0) || !ingress_block)
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invarg("invalid ingress block index value", *argv);
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} else if (matches(*argv, "egress_block") == 0) {
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NEXT_ARG();
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if (get_u32(&egress_block, *argv, 0) || !egress_block)
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invarg("invalid egress block index value", *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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strncpy(k, *argv, sizeof(k)-1);
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q = get_qdisc_kind(k);
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argc--; argv++;
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break;
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}
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argc--; argv++;
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}
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if (k[0])
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addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
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if (est.ewma_log)
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addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
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if (ingress_block)
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addattr32(&req.n, sizeof(req),
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TCA_INGRESS_BLOCK, ingress_block);
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if (egress_block)
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addattr32(&req.n, sizeof(req),
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TCA_EGRESS_BLOCK, egress_block);
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if (q) {
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if (q->parse_qopt) {
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if (q->parse_qopt(q, argc, argv, &req.n, d))
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return 1;
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} else if (argc) {
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fprintf(stderr, "qdisc '%s' does not support option parsing\n", k);
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return -1;
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}
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} else {
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if (argc) {
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if (matches(*argv, "help") == 0)
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usage();
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fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv);
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return -1;
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}
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}
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if (check_size_table_opts(&stab.szopts)) {
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struct rtattr *tail;
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if (tc_calc_size_table(&stab.szopts, &stab.data) < 0) {
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fprintf(stderr, "failed to calculate size table.\n");
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return -1;
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}
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tail = addattr_nest(&req.n, sizeof(req), TCA_STAB);
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addattr_l(&req.n, sizeof(req), TCA_STAB_BASE, &stab.szopts,
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sizeof(stab.szopts));
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if (stab.data)
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addattr_l(&req.n, sizeof(req), TCA_STAB_DATA, stab.data,
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stab.szopts.tsize * sizeof(__u16));
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addattr_nest_end(&req.n, tail);
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if (stab.data)
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free(stab.data);
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}
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if (d[0]) {
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int idx;
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ll_init_map(&rth);
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idx = ll_name_to_index(d);
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if (!idx)
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return -nodev(d);
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req.t.tcm_ifindex = idx;
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}
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if (rtnl_talk(&rth, &req.n, NULL) < 0)
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return 2;
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return 0;
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}
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static int filter_ifindex;
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static __u32 filter_parent;
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static __u32 filter_handle;
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int print_qdisc(struct nlmsghdr *n, void *arg)
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{
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FILE *fp = (FILE *)arg;
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struct tcmsg *t = NLMSG_DATA(n);
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int len = n->nlmsg_len;
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struct rtattr *tb[TCA_MAX+1];
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struct qdisc_util *q;
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char abuf[256];
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if (n->nlmsg_type != RTM_NEWQDISC && n->nlmsg_type != RTM_DELQDISC) {
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fprintf(stderr, "Not a qdisc\n");
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return 0;
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}
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len -= NLMSG_LENGTH(sizeof(*t));
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if (len < 0) {
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fprintf(stderr, "Wrong len %d\n", len);
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return -1;
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}
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if (filter_ifindex && filter_ifindex != t->tcm_ifindex)
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return 0;
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if (filter_handle && filter_handle != t->tcm_handle)
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return 0;
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if (filter_parent && filter_parent != t->tcm_parent)
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return 0;
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parse_rtattr_flags(tb, TCA_MAX, TCA_RTA(t), len, NLA_F_NESTED);
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if (tb[TCA_KIND] == NULL) {
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fprintf(stderr, "print_qdisc: NULL kind\n");
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return -1;
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}
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3880ab |
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open_json_object(NULL);
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3880ab |
|
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if (n->nlmsg_type == RTM_DELQDISC)
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print_bool(PRINT_ANY, "deleted", "deleted ", true);
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|
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if (n->nlmsg_type == RTM_NEWQDISC &&
|
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(n->nlmsg_flags & NLM_F_CREATE) &&
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(n->nlmsg_flags & NLM_F_REPLACE))
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print_bool(PRINT_ANY, "replaced", "replaced ", true);
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3880ab |
|
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if (n->nlmsg_type == RTM_NEWQDISC &&
|
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(n->nlmsg_flags & NLM_F_CREATE) &&
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(n->nlmsg_flags & NLM_F_EXCL))
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print_bool(PRINT_ANY, "added", "added ", true);
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3880ab |
|
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print_string(PRINT_ANY, "kind", "qdisc %s",
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rta_getattr_str(tb[TCA_KIND]));
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sprintf(abuf, "%x:", t->tcm_handle >> 16);
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print_string(PRINT_ANY, "handle", " %s", abuf);
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if (show_raw) {
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sprintf(abuf, "[%08x]", t->tcm_handle);
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print_string(PRINT_FP, NULL, "%s", abuf);
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}
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print_string(PRINT_FP, NULL, " ", NULL);
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3880ab |
|
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if (filter_ifindex == 0)
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Packit Service |
3880ab |
print_devname(PRINT_ANY, t->tcm_ifindex);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (t->tcm_parent == TC_H_ROOT)
|
|
Packit Service |
3880ab |
print_bool(PRINT_ANY, "root", "root ", true);
|
|
Packit Service |
3880ab |
else if (t->tcm_parent) {
|
|
Packit Service |
3880ab |
print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
|
|
Packit Service |
3880ab |
print_string(PRINT_ANY, "parent", "parent %s ", abuf);
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (t->tcm_info != 1)
|
|
Packit Service |
3880ab |
print_uint(PRINT_ANY, "refcnt", "refcnt %u ", t->tcm_info);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_HW_OFFLOAD] &&
|
|
Packit Service |
3880ab |
(rta_getattr_u8(tb[TCA_HW_OFFLOAD])))
|
|
Packit Service |
3880ab |
print_bool(PRINT_ANY, "offloaded", "offloaded ", true);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_INGRESS_BLOCK] &&
|
|
Packit Service |
3880ab |
RTA_PAYLOAD(tb[TCA_INGRESS_BLOCK]) >= sizeof(__u32)) {
|
|
Packit Service |
3880ab |
__u32 block = rta_getattr_u32(tb[TCA_INGRESS_BLOCK]);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (block)
|
|
Packit Service |
3880ab |
print_uint(PRINT_ANY, "ingress_block",
|
|
Packit Service |
3880ab |
"ingress_block %u ", block);
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_EGRESS_BLOCK] &&
|
|
Packit Service |
3880ab |
RTA_PAYLOAD(tb[TCA_EGRESS_BLOCK]) >= sizeof(__u32)) {
|
|
Packit Service |
3880ab |
__u32 block = rta_getattr_u32(tb[TCA_EGRESS_BLOCK]);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (block)
|
|
Packit Service |
3880ab |
print_uint(PRINT_ANY, "egress_block",
|
|
Packit Service |
3880ab |
"egress_block %u ", block);
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
/* pfifo_fast is generic enough to warrant the hardcoding --JHS */
|
|
Packit Service |
3880ab |
if (strcmp("pfifo_fast", RTA_DATA(tb[TCA_KIND])) == 0)
|
|
Packit Service |
3880ab |
q = get_qdisc_kind("prio");
|
|
Packit Service |
3880ab |
else
|
|
Packit Service |
3880ab |
q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
open_json_object("options");
|
|
Packit Service |
3880ab |
if (tb[TCA_OPTIONS]) {
|
|
Packit Service |
3880ab |
if (q)
|
|
Packit Service |
3880ab |
q->print_qopt(q, fp, tb[TCA_OPTIONS]);
|
|
Packit Service |
3880ab |
else
|
|
Packit Service |
3880ab |
fprintf(stderr, "Cannot parse qdisc parameters\n");
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
close_json_object();
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
print_nl();
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (show_details && tb[TCA_STAB]) {
|
|
Packit Service |
3880ab |
print_size_table(fp, " ", tb[TCA_STAB]);
|
|
Packit Service |
3880ab |
print_nl();
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (show_stats) {
|
|
Packit Service |
3880ab |
struct rtattr *xstats = NULL;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_STATS] || tb[TCA_STATS2] || tb[TCA_XSTATS]) {
|
|
Packit Service |
3880ab |
print_tcstats_attr(fp, tb, " ", &xstats);
|
|
Packit Service |
3880ab |
print_nl();
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (q && xstats && q->print_xstats) {
|
|
Packit Service |
3880ab |
q->print_xstats(q, fp, xstats);
|
|
Packit Service |
3880ab |
print_nl();
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
close_json_object();
|
|
Packit Service |
3880ab |
fflush(fp);
|
|
Packit Service |
3880ab |
return 0;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
static int tc_qdisc_list(int argc, char **argv)
|
|
Packit Service |
3880ab |
{
|
|
Packit Service |
3880ab |
struct {
|
|
Packit Service |
3880ab |
struct nlmsghdr n;
|
|
Packit Service |
3880ab |
struct tcmsg t;
|
|
Packit Service |
3880ab |
char buf[256];
|
|
Packit Service |
3880ab |
} req = {
|
|
Packit Service |
3880ab |
.n.nlmsg_type = RTM_GETQDISC,
|
|
Packit Service |
3880ab |
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
|
|
Packit Service |
3880ab |
.t.tcm_family = AF_UNSPEC,
|
|
Packit Service |
3880ab |
};
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
char d[IFNAMSIZ] = {};
|
|
Packit Service |
3880ab |
bool dump_invisible = false;
|
|
Packit Service |
3880ab |
__u32 handle;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
while (argc > 0) {
|
|
Packit Service |
3880ab |
if (strcmp(*argv, "dev") == 0) {
|
|
Packit Service |
3880ab |
NEXT_ARG();
|
|
Packit Service |
3880ab |
strncpy(d, *argv, sizeof(d)-1);
|
|
Packit Service |
3880ab |
} else if (strcmp(*argv, "root") == 0) {
|
|
Packit Service |
3880ab |
if (filter_parent)
|
|
Packit Service |
3880ab |
invarg("parent is already specified", *argv);
|
|
Packit Service |
3880ab |
else if (filter_handle)
|
|
Packit Service |
3880ab |
invarg("handle is already specified", *argv);
|
|
Packit Service |
3880ab |
filter_parent = TC_H_ROOT;
|
|
Packit Service |
3880ab |
} else if (strcmp(*argv, "ingress") == 0 ||
|
|
Packit Service |
3880ab |
strcmp(*argv, "clsact") == 0) {
|
|
Packit Service |
3880ab |
if (filter_parent)
|
|
Packit Service |
3880ab |
invarg("parent is already specified", *argv);
|
|
Packit Service |
3880ab |
else if (filter_handle)
|
|
Packit Service |
3880ab |
invarg("handle is already specified", *argv);
|
|
Packit Service |
3880ab |
filter_parent = TC_H_INGRESS;
|
|
Packit Service |
3880ab |
} else if (matches(*argv, "parent") == 0) {
|
|
Packit Service |
3880ab |
if (filter_parent)
|
|
Packit Service |
3880ab |
invarg("parent is already specified", *argv);
|
|
Packit Service |
3880ab |
else if (filter_handle)
|
|
Packit Service |
3880ab |
invarg("handle is already specified", *argv);
|
|
Packit Service |
3880ab |
NEXT_ARG();
|
|
Packit Service |
3880ab |
if (get_tc_classid(&handle, *argv))
|
|
Packit Service |
3880ab |
invarg("invalid parent ID", *argv);
|
|
Packit Service |
3880ab |
filter_parent = handle;
|
|
Packit Service |
3880ab |
} else if (matches(*argv, "handle") == 0) {
|
|
Packit Service |
3880ab |
if (filter_parent)
|
|
Packit Service |
3880ab |
invarg("parent is already specified", *argv);
|
|
Packit Service |
3880ab |
else if (filter_handle)
|
|
Packit Service |
3880ab |
invarg("handle is already specified", *argv);
|
|
Packit Service |
3880ab |
NEXT_ARG();
|
|
Packit Service |
3880ab |
if (get_qdisc_handle(&handle, *argv))
|
|
Packit Service |
3880ab |
invarg("invalid handle ID", *argv);
|
|
Packit Service |
3880ab |
filter_handle = handle;
|
|
Packit Service |
3880ab |
} else if (matches(*argv, "help") == 0) {
|
|
Packit Service |
3880ab |
usage();
|
|
Packit Service |
3880ab |
} else if (strcmp(*argv, "invisible") == 0) {
|
|
Packit Service |
3880ab |
dump_invisible = true;
|
|
Packit Service |
3880ab |
} else {
|
|
Packit Service |
3880ab |
fprintf(stderr, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv);
|
|
Packit Service |
3880ab |
return -1;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
argc--; argv++;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
ll_init_map(&rth);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (d[0]) {
|
|
Packit Service |
3880ab |
req.t.tcm_ifindex = ll_name_to_index(d);
|
|
Packit Service |
3880ab |
if (!req.t.tcm_ifindex)
|
|
Packit Service |
3880ab |
return -nodev(d);
|
|
Packit Service |
3880ab |
filter_ifindex = req.t.tcm_ifindex;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (dump_invisible) {
|
|
Packit Service |
3880ab |
addattr(&req.n, 256, TCA_DUMP_INVISIBLE);
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (rtnl_dump_request_n(&rth, &req.n) < 0) {
|
|
Packit Service |
3880ab |
perror("Cannot send request");
|
|
Packit Service |
3880ab |
return 1;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
new_json_obj(json);
|
|
Packit Service |
3880ab |
if (rtnl_dump_filter(&rth, print_qdisc, stdout) < 0) {
|
|
Packit Service |
3880ab |
fprintf(stderr, "Dump terminated\n");
|
|
Packit Service |
3880ab |
return 1;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
delete_json_obj();
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
return 0;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
int do_qdisc(int argc, char **argv)
|
|
Packit Service |
3880ab |
{
|
|
Packit Service |
3880ab |
if (argc < 1)
|
|
Packit Service |
3880ab |
return tc_qdisc_list(0, NULL);
|
|
Packit Service |
3880ab |
if (matches(*argv, "add") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "change") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_modify(RTM_NEWQDISC, 0, argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "replace") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "link") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_REPLACE, argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "delete") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_modify(RTM_DELQDISC, 0, argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|
|
Packit Service |
3880ab |
|| matches(*argv, "lst") == 0)
|
|
Packit Service |
3880ab |
return tc_qdisc_list(argc-1, argv+1);
|
|
Packit Service |
3880ab |
if (matches(*argv, "help") == 0) {
|
|
Packit Service |
3880ab |
usage();
|
|
Packit Service |
3880ab |
return 0;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
fprintf(stderr, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv);
|
|
Packit Service |
3880ab |
return -1;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
struct tc_qdisc_block_exists_ctx {
|
|
Packit Service |
3880ab |
__u32 block_index;
|
|
Packit Service |
3880ab |
bool found;
|
|
Packit Service |
3880ab |
};
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
static int tc_qdisc_block_exists_cb(struct nlmsghdr *n, void *arg)
|
|
Packit Service |
3880ab |
{
|
|
Packit Service |
3880ab |
struct tc_qdisc_block_exists_ctx *ctx = arg;
|
|
Packit Service |
3880ab |
struct tcmsg *t = NLMSG_DATA(n);
|
|
Packit Service |
3880ab |
struct rtattr *tb[TCA_MAX+1];
|
|
Packit Service |
3880ab |
int len = n->nlmsg_len;
|
|
Packit Service |
3880ab |
struct qdisc_util *q;
|
|
Packit Service |
3880ab |
const char *kind;
|
|
Packit Service |
3880ab |
int err;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (n->nlmsg_type != RTM_NEWQDISC)
|
|
Packit Service |
3880ab |
return 0;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
len -= NLMSG_LENGTH(sizeof(*t));
|
|
Packit Service |
3880ab |
if (len < 0)
|
|
Packit Service |
3880ab |
return -1;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
parse_rtattr_flags(tb, TCA_MAX, TCA_RTA(t), len, NLA_F_NESTED);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_KIND] == NULL)
|
|
Packit Service |
3880ab |
return -1;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_INGRESS_BLOCK] &&
|
|
Packit Service |
3880ab |
RTA_PAYLOAD(tb[TCA_INGRESS_BLOCK]) >= sizeof(__u32)) {
|
|
Packit Service |
3880ab |
__u32 block = rta_getattr_u32(tb[TCA_INGRESS_BLOCK]);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (block == ctx->block_index)
|
|
Packit Service |
3880ab |
ctx->found = true;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (tb[TCA_EGRESS_BLOCK] &&
|
|
Packit Service |
3880ab |
RTA_PAYLOAD(tb[TCA_EGRESS_BLOCK]) >= sizeof(__u32)) {
|
|
Packit Service |
3880ab |
__u32 block = rta_getattr_u32(tb[TCA_EGRESS_BLOCK]);
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (block == ctx->block_index)
|
|
Packit Service |
3880ab |
ctx->found = true;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
kind = rta_getattr_str(tb[TCA_KIND]);
|
|
Packit Service |
3880ab |
q = get_qdisc_kind(kind);
|
|
Packit Service |
3880ab |
if (!q)
|
|
Packit Service |
3880ab |
return -1;
|
|
Packit Service |
3880ab |
if (q->has_block) {
|
|
Packit Service |
3880ab |
bool found = false;
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
err = q->has_block(q, tb[TCA_OPTIONS], ctx->block_index, &found);
|
|
Packit Service |
3880ab |
if (err)
|
|
Packit Service |
3880ab |
return err;
|
|
Packit Service |
3880ab |
if (found)
|
|
Packit Service |
3880ab |
ctx->found = true;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
return 0;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
bool tc_qdisc_block_exists(__u32 block_index)
|
|
Packit Service |
3880ab |
{
|
|
Packit Service |
3880ab |
struct tc_qdisc_block_exists_ctx ctx = { .block_index = block_index };
|
|
Packit Service |
3880ab |
struct tcmsg t = { .tcm_family = AF_UNSPEC };
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (rtnl_dump_request(&rth, RTM_GETQDISC, &t, sizeof(t)) < 0) {
|
|
Packit Service |
3880ab |
perror("Cannot send dump request");
|
|
Packit Service |
3880ab |
return false;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
if (rtnl_dump_filter(&rth, tc_qdisc_block_exists_cb, &ctx) < 0) {
|
|
Packit Service |
3880ab |
perror("Dump terminated\n");
|
|
Packit Service |
3880ab |
return false;
|
|
Packit Service |
3880ab |
}
|
|
Packit Service |
3880ab |
|
|
Packit Service |
3880ab |
return ctx.found;
|
|
Packit Service |
3880ab |
}
|