/*
* tc_filter.c "tc filter".
*
* 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>
*
*/
#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 <linux/if_ether.h>
#include "rt_names.h"
#include "utils.h"
#include "tc_util.h"
#include "tc_common.h"
static void usage(void)
{
fprintf(stderr,
"Usage: tc filter [ add | del | change | replace | show ] [ dev STRING ]\n"
" tc filter [ add | del | change | replace | show ] [ block BLOCK_INDEX ]\n"
" tc filter get dev STRING parent CLASSID protocol PROTO handle FILTERID pref PRIO FILTER_TYPE\n"
" tc filter get block BLOCK_INDEX protocol PROTO handle FILTERID pref PRIO FILTER_TYPE\n"
" [ pref PRIO ] protocol PROTO [ chain CHAIN_INDEX ]\n"
" [ estimator INTERVAL TIME_CONSTANT ]\n"
" [ root | ingress | egress | parent CLASSID ]\n"
" [ handle FILTERID ] [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n"
"\n"
" tc filter show [ dev STRING ] [ root | ingress | egress | parent CLASSID ]\n"
" tc filter show [ block BLOCK_INDEX ]\n"
"Where:\n"
"FILTER_TYPE := { rsvp | u32 | bpf | fw | route | etc. }\n"
"FILTERID := ... format depends on classifier, see there\n"
"OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
}
static void chain_usage(void)
{
fprintf(stderr,
"Usage: tc chain [ add | del | get | show ] [ dev STRING ]\n"
" tc chain [ add | del | get | show ] [ block BLOCK_INDEX ] ]\n");
}
struct tc_filter_req {
struct nlmsghdr n;
struct tcmsg t;
char buf[MAX_MSG];
};
static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct tcmsg t;
char buf[MAX_MSG];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
.n.nlmsg_flags = NLM_F_REQUEST | flags,
.n.nlmsg_type = cmd,
.t.tcm_family = AF_UNSPEC,
};
struct filter_util *q = NULL;
__u32 prio = 0;
__u32 protocol = 0;
int protocol_set = 0;
__u32 block_index = 0;
__u32 chain_index;
int chain_index_set = 0;
char *fhandle = NULL;
char d[IFNAMSIZ] = {};
char k[FILTER_NAMESZ] = {};
struct tc_estimator est = {};
if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE)
protocol = htons(ETH_P_ALL);
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
if (d[0])
duparg("dev", *argv);
if (block_index) {
fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
return -1;
}
strncpy(d, *argv, sizeof(d)-1);
} else if (matches(*argv, "block") == 0) {
NEXT_ARG();
if (block_index)
duparg("block", *argv);
if (d[0]) {
fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
return -1;
}
if (get_u32(&block_index, *argv, 0) || !block_index)
invarg("invalid block index value", *argv);
} else if (strcmp(*argv, "root") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"root\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_ROOT;
} else if (strcmp(*argv, "ingress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"ingress\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_INGRESS);
} else if (strcmp(*argv, "egress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"egress\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_EGRESS);
} else if (strcmp(*argv, "parent") == 0) {
__u32 handle;
NEXT_ARG();
if (req.t.tcm_parent)
duparg("parent", *argv);
if (get_tc_classid(&handle, *argv))
invarg("Invalid parent ID", *argv);
req.t.tcm_parent = handle;
} else if (strcmp(*argv, "handle") == 0) {
NEXT_ARG();
if (fhandle)
duparg("handle", *argv);
fhandle = *argv;
} else if (matches(*argv, "preference") == 0 ||
matches(*argv, "priority") == 0) {
NEXT_ARG();
if (prio)
duparg("priority", *argv);
if (get_u32(&prio, *argv, 0) || prio > 0xFFFF)
invarg("invalid priority value", *argv);
} else if (matches(*argv, "protocol") == 0) {
__u16 id;
NEXT_ARG();
if (protocol_set)
duparg("protocol", *argv);
if (ll_proto_a2n(&id, *argv))
invarg("invalid protocol", *argv);
protocol = id;
protocol_set = 1;
} else if (matches(*argv, "chain") == 0) {
NEXT_ARG();
if (chain_index_set)
duparg("chain", *argv);
if (get_u32(&chain_index, *argv, 0))
invarg("invalid chain index value", *argv);
chain_index_set = 1;
} else if (matches(*argv, "estimator") == 0) {
if (parse_estimator(&argc, &argv, &est) < 0)
return -1;
} else if (matches(*argv, "help") == 0) {
usage();
return 0;
} else {
strncpy(k, *argv, sizeof(k)-1);
q = get_filter_kind(k);
argc--; argv++;
break;
}
argc--; argv++;
}
req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
if (chain_index_set)
addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index);
if (k[0])
addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
if (d[0]) {
ll_init_map(&rth);
req.t.tcm_ifindex = ll_name_to_index(d);
if (req.t.tcm_ifindex == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n", d);
return 1;
}
} else if (block_index) {
req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
req.t.tcm_block_index = block_index;
}
if (q) {
if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
return 1;
} else {
if (fhandle) {
fprintf(stderr,
"Must specify filter type when using \"handle\"\n");
return -1;
}
if (argc) {
if (matches(*argv, "help") == 0)
usage();
fprintf(stderr,
"Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n",
*argv);
return -1;
}
}
if (est.ewma_log)
addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
if (rtnl_talk(&rth, &req.n, NULL) < 0) {
fprintf(stderr, "We have an error talking to the kernel\n");
return 2;
}
return 0;
}
static __u32 filter_parent;
static int filter_ifindex;
static __u32 filter_prio;
static __u32 filter_protocol;
static __u32 filter_chain_index;
static int filter_chain_index_set;
static __u32 filter_block_index;
__u16 f_proto;
int print_filter(struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE *)arg;
struct tcmsg *t = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr *tb[TCA_MAX+1];
struct filter_util *q;
char abuf[256];
if (n->nlmsg_type != RTM_NEWTFILTER &&
n->nlmsg_type != RTM_GETTFILTER &&
n->nlmsg_type != RTM_DELTFILTER &&
n->nlmsg_type != RTM_NEWCHAIN &&
n->nlmsg_type != RTM_GETCHAIN &&
n->nlmsg_type != RTM_DELCHAIN) {
fprintf(stderr, "Not a filter(cmd %d)\n", n->nlmsg_type);
return 0;
}
len -= NLMSG_LENGTH(sizeof(*t));
if (len < 0) {
fprintf(stderr, "Wrong len %d\n", len);
return -1;
}
parse_rtattr_flags(tb, TCA_MAX, TCA_RTA(t), len, NLA_F_NESTED);
if (tb[TCA_KIND] == NULL && (n->nlmsg_type == RTM_NEWTFILTER ||
n->nlmsg_type == RTM_GETTFILTER ||
n->nlmsg_type == RTM_DELTFILTER)) {
fprintf(stderr, "print_filter: NULL kind\n");
return -1;
}
open_json_object(NULL);
if (n->nlmsg_type == RTM_DELTFILTER || n->nlmsg_type == RTM_DELCHAIN)
print_bool(PRINT_ANY, "deleted", "deleted ", true);
if ((n->nlmsg_type == RTM_NEWTFILTER ||
n->nlmsg_type == RTM_NEWCHAIN) &&
(n->nlmsg_flags & NLM_F_CREATE) &&
!(n->nlmsg_flags & NLM_F_EXCL))
print_bool(PRINT_ANY, "replaced", "replaced ", true);
if ((n->nlmsg_type == RTM_NEWTFILTER ||
n->nlmsg_type == RTM_NEWCHAIN) &&
(n->nlmsg_flags & NLM_F_CREATE) &&
(n->nlmsg_flags & NLM_F_EXCL))
print_bool(PRINT_ANY, "added", "added ", true);
if (n->nlmsg_type == RTM_NEWTFILTER ||
n->nlmsg_type == RTM_GETTFILTER ||
n->nlmsg_type == RTM_DELTFILTER)
print_string(PRINT_FP, NULL, "filter ", NULL);
else
print_string(PRINT_FP, NULL, "chain ", NULL);
if (t->tcm_ifindex == TCM_IFINDEX_MAGIC_BLOCK) {
if (!filter_block_index ||
filter_block_index != t->tcm_block_index)
print_uint(PRINT_ANY, "block", "block %u ",
t->tcm_block_index);
} else {
if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
print_devname(PRINT_ANY, t->tcm_ifindex);
if (!filter_parent || filter_parent != t->tcm_parent) {
if (t->tcm_parent == TC_H_ROOT)
print_bool(PRINT_ANY, "root", "root ", true);
else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS))
print_bool(PRINT_ANY, "ingress", "ingress ", true);
else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS))
print_bool(PRINT_ANY, "egress", "egress ", true);
else {
print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
print_string(PRINT_ANY, "parent", "parent %s ", abuf);
}
}
}
if (t->tcm_info && (n->nlmsg_type == RTM_NEWTFILTER ||
n->nlmsg_type == RTM_DELTFILTER ||
n->nlmsg_type == RTM_GETTFILTER)) {
f_proto = TC_H_MIN(t->tcm_info);
__u32 prio = TC_H_MAJ(t->tcm_info)>>16;
if (!filter_protocol || filter_protocol != f_proto) {
if (f_proto) {
SPRINT_BUF(b1);
print_string(PRINT_ANY, "protocol",
"protocol %s ",
ll_proto_n2a(f_proto, b1, sizeof(b1)));
}
}
if (!filter_prio || filter_prio != prio) {
if (prio)
print_uint(PRINT_ANY, "pref", "pref %u ", prio);
}
}
if (tb[TCA_KIND])
print_string(PRINT_ANY, "kind", "%s ", rta_getattr_str(tb[TCA_KIND]));
if (tb[TCA_CHAIN]) {
__u32 chain_index = rta_getattr_u32(tb[TCA_CHAIN]);
if (!filter_chain_index_set ||
filter_chain_index != chain_index)
print_uint(PRINT_ANY, "chain", "chain %u ",
chain_index);
}
if (tb[TCA_KIND]) {
q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
if (tb[TCA_OPTIONS]) {
open_json_object("options");
if (q)
q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
else
fprintf(stderr, "cannot parse option parameters\n");
close_json_object();
}
}
print_nl();
if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) {
print_tcstats_attr(fp, tb, " ", NULL);
print_nl();
}
close_json_object();
fflush(fp);
return 0;
}
static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct tcmsg t;
char buf[MAX_MSG];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
/* NLM_F_ECHO is for backward compatibility. old kernels never
* respond without it and newer kernels will ignore it.
* In old kernels there is a side effect:
* In addition to a response to the GET you will receive an
* event (if you do tc mon).
*/
.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ECHO | flags,
.n.nlmsg_type = cmd,
.t.tcm_parent = TC_H_UNSPEC,
.t.tcm_family = AF_UNSPEC,
};
struct nlmsghdr *answer;
struct filter_util *q = NULL;
__u32 prio = 0;
__u32 protocol = 0;
int protocol_set = 0;
__u32 chain_index;
int chain_index_set = 0;
__u32 block_index = 0;
__u32 parent_handle = 0;
char *fhandle = NULL;
char d[IFNAMSIZ] = {};
char k[FILTER_NAMESZ] = {};
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
if (d[0])
duparg("dev", *argv);
if (block_index) {
fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
return -1;
}
strncpy(d, *argv, sizeof(d)-1);
} else if (matches(*argv, "block") == 0) {
NEXT_ARG();
if (block_index)
duparg("block", *argv);
if (d[0]) {
fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
return -1;
}
if (get_u32(&block_index, *argv, 0) || !block_index)
invarg("invalid block index value", *argv);
} else if (strcmp(*argv, "root") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"root\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_ROOT;
} else if (strcmp(*argv, "ingress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"ingress\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_INGRESS);
} else if (strcmp(*argv, "egress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"egress\" is duplicate parent ID\n");
return -1;
}
req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_EGRESS);
} else if (strcmp(*argv, "parent") == 0) {
NEXT_ARG();
if (req.t.tcm_parent)
duparg("parent", *argv);
if (get_tc_classid(&parent_handle, *argv))
invarg("Invalid parent ID", *argv);
req.t.tcm_parent = parent_handle;
} else if (strcmp(*argv, "handle") == 0) {
NEXT_ARG();
if (fhandle)
duparg("handle", *argv);
fhandle = *argv;
} else if (matches(*argv, "preference") == 0 ||
matches(*argv, "priority") == 0) {
NEXT_ARG();
if (prio)
duparg("priority", *argv);
if (get_u32(&prio, *argv, 0) || prio > 0xFFFF)
invarg("invalid priority value", *argv);
} else if (matches(*argv, "protocol") == 0) {
__u16 id;
NEXT_ARG();
if (protocol_set)
duparg("protocol", *argv);
if (ll_proto_a2n(&id, *argv))
invarg("invalid protocol", *argv);
protocol = id;
protocol_set = 1;
} else if (matches(*argv, "chain") == 0) {
NEXT_ARG();
if (chain_index_set)
duparg("chain", *argv);
if (get_u32(&chain_index, *argv, 0))
invarg("invalid chain index value", *argv);
chain_index_set = 1;
} else if (matches(*argv, "help") == 0) {
usage();
return 0;
} else {
if (!**argv)
invarg("invalid filter name", *argv);
strncpy(k, *argv, sizeof(k)-1);
q = get_filter_kind(k);
argc--; argv++;
break;
}
argc--; argv++;
}
if (cmd == RTM_GETTFILTER) {
if (!protocol_set) {
fprintf(stderr, "Must specify filter protocol\n");
return -1;
}
if (!prio) {
fprintf(stderr, "Must specify filter priority\n");
return -1;
}
req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
}
if (chain_index_set)
addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index);
if (req.t.tcm_parent == TC_H_UNSPEC) {
fprintf(stderr, "Must specify filter parent\n");
return -1;
}
if (cmd == RTM_GETTFILTER) {
if (k[0])
addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
else {
fprintf(stderr, "Must specify filter type\n");
return -1;
}
}
if (d[0]) {
ll_init_map(&rth);
req.t.tcm_ifindex = ll_name_to_index(d);
if (!req.t.tcm_ifindex)
return -nodev(d);
filter_ifindex = req.t.tcm_ifindex;
} else if (block_index) {
req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
req.t.tcm_block_index = block_index;
filter_block_index = block_index;
} else {
fprintf(stderr, "Must specify netdevice \"dev\" or block index \"block\"\n");
return -1;
}
if (cmd == RTM_GETTFILTER &&
q->parse_fopt(q, fhandle, argc, argv, &req.n))
return 1;
if (!fhandle && cmd == RTM_GETTFILTER) {
fprintf(stderr, "Must specify filter \"handle\"\n");
return -1;
}
if (argc) {
if (matches(*argv, "help") == 0)
usage();
fprintf(stderr,
"Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n",
*argv);
return -1;
}
if (rtnl_talk(&rth, &req.n, &answer) < 0) {
fprintf(stderr, "We have an error talking to the kernel\n");
return 2;
}
new_json_obj(json);
print_filter(answer, (void *)stdout);
delete_json_obj();
free(answer);
return 0;
}
static int tc_filter_list(int cmd, int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct tcmsg t;
char buf[MAX_MSG];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)),
.n.nlmsg_type = cmd,
.t.tcm_parent = TC_H_UNSPEC,
.t.tcm_family = AF_UNSPEC,
};
char d[IFNAMSIZ] = {};
__u32 prio = 0;
__u32 protocol = 0;
__u32 chain_index;
__u32 block_index = 0;
char *fhandle = NULL;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
if (d[0])
duparg("dev", *argv);
if (block_index) {
fprintf(stderr, "Error: \"dev\" cannot be used in the same time as \"block\"\n");
return -1;
}
strncpy(d, *argv, sizeof(d)-1);
} else if (matches(*argv, "block") == 0) {
NEXT_ARG();
if (block_index)
duparg("block", *argv);
if (d[0]) {
fprintf(stderr, "Error: \"block\" cannot be used in the same time as \"dev\"\n");
return -1;
}
if (get_u32(&block_index, *argv, 0) || !block_index)
invarg("invalid block index value", *argv);
} else if (strcmp(*argv, "root") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"root\" is duplicate parent ID\n");
return -1;
}
filter_parent = req.t.tcm_parent = TC_H_ROOT;
} else if (strcmp(*argv, "ingress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"ingress\" is duplicate parent ID\n");
return -1;
}
filter_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_INGRESS);
req.t.tcm_parent = filter_parent;
} else if (strcmp(*argv, "egress") == 0) {
if (req.t.tcm_parent) {
fprintf(stderr,
"Error: \"egress\" is duplicate parent ID\n");
return -1;
}
filter_parent = TC_H_MAKE(TC_H_CLSACT,
TC_H_MIN_EGRESS);
req.t.tcm_parent = filter_parent;
} else if (strcmp(*argv, "parent") == 0) {
__u32 handle;
NEXT_ARG();
if (req.t.tcm_parent)
duparg("parent", *argv);
if (get_tc_classid(&handle, *argv))
invarg("invalid parent ID", *argv);
filter_parent = req.t.tcm_parent = handle;
} else if (strcmp(*argv, "handle") == 0) {
NEXT_ARG();
if (fhandle)
duparg("handle", *argv);
fhandle = *argv;
} else if (matches(*argv, "preference") == 0 ||
matches(*argv, "priority") == 0) {
NEXT_ARG();
if (prio)
duparg("priority", *argv);
if (get_u32(&prio, *argv, 0))
invarg("invalid preference", *argv);
filter_prio = prio;
} else if (matches(*argv, "protocol") == 0) {
__u16 res;
NEXT_ARG();
if (protocol)
duparg("protocol", *argv);
if (ll_proto_a2n(&res, *argv))
invarg("invalid protocol", *argv);
protocol = res;
filter_protocol = protocol;
} else if (matches(*argv, "chain") == 0) {
NEXT_ARG();
if (filter_chain_index_set)
duparg("chain", *argv);
if (get_u32(&chain_index, *argv, 0))
invarg("invalid chain index value", *argv);
filter_chain_index_set = 1;
filter_chain_index = chain_index;
} else if (matches(*argv, "help") == 0) {
usage();
} else {
fprintf(stderr,
" What is \"%s\"? Try \"tc filter help\"\n",
*argv);
return -1;
}
argc--; argv++;
}
req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
ll_init_map(&rth);
if (d[0]) {
req.t.tcm_ifindex = ll_name_to_index(d);
if (!req.t.tcm_ifindex)
return -nodev(d);
filter_ifindex = req.t.tcm_ifindex;
} else if (block_index) {
if (!tc_qdisc_block_exists(block_index)) {
fprintf(stderr, "Cannot find block \"%u\"\n", block_index);
return 1;
}
req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
req.t.tcm_block_index = block_index;
filter_block_index = block_index;
}
if (filter_chain_index_set)
addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index);
if (rtnl_dump_request_n(&rth, &req.n) < 0) {
perror("Cannot send dump request");
return 1;
}
new_json_obj(json);
if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
return 1;
}
delete_json_obj();
return 0;
}
int do_filter(int argc, char **argv)
{
if (argc < 1)
return tc_filter_list(RTM_GETTFILTER, 0, NULL);
if (matches(*argv, "add") == 0)
return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE,
argc-1, argv+1);
if (matches(*argv, "change") == 0)
return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
if (matches(*argv, "replace") == 0)
return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1,
argv+1);
if (matches(*argv, "delete") == 0)
return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1);
if (matches(*argv, "get") == 0)
return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1);
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|| matches(*argv, "lst") == 0)
return tc_filter_list(RTM_GETTFILTER, argc-1, argv+1);
if (matches(*argv, "help") == 0) {
usage();
return 0;
}
fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n",
*argv);
return -1;
}
int do_chain(int argc, char **argv)
{
if (argc < 1)
return tc_filter_list(RTM_GETCHAIN, 0, NULL);
if (matches(*argv, "add") == 0) {
return tc_filter_modify(RTM_NEWCHAIN, NLM_F_EXCL | NLM_F_CREATE,
argc - 1, argv + 1);
} else if (matches(*argv, "delete") == 0) {
return tc_filter_modify(RTM_DELCHAIN, 0,
argc - 1, argv + 1);
} else if (matches(*argv, "get") == 0) {
return tc_filter_get(RTM_GETCHAIN, 0,
argc - 1, argv + 1);
} else if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0) {
return tc_filter_list(RTM_GETCHAIN, argc - 1, argv + 1);
} else if (matches(*argv, "help") == 0) {
chain_usage();
return 0;
}
fprintf(stderr, "Command \"%s\" is unknown, try \"tc chain help\".\n",
*argv);
return -1;
}