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-rw-r--r--tc/tc_filter.c799
1 files changed, 799 insertions, 0 deletions
diff --git a/tc/tc_filter.c b/tc/tc_filter.c
new file mode 100644
index 0000000..71be2e8
--- /dev/null
+++ b/tc/tc_filter.c
@@ -0,0 +1,799 @@
+/*
+ * 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 (brief) {
+ struct nla_bitfield32 flags = {
+ .value = TCA_DUMP_FLAGS_TERSE,
+ .selector = TCA_DUMP_FLAGS_TERSE
+ };
+
+ addattr_l(&req.n, MAX_MSG, TCA_DUMP_FLAGS, &flags, sizeof(flags));
+ }
+
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-30 17:56:24 +0000