#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
-#include <syslog.h>
#include <fcntl.h>
-#include <net/if.h>
-#include <net/if_arp.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "tc_util.h"
#include "tc_common.h"
-static void usage(void) __attribute__((noreturn));
-
static void usage(void)
{
- fprintf(stderr, "Usage: tc filter [ add | del | change | get ] dev STRING\n");
- fprintf(stderr, " [ pref PRIO ] [ protocol PROTO ]\n");
- fprintf(stderr, " [ estimator INTERVAL TIME_CONSTANT ]\n");
- fprintf(stderr, " [ root | classid CLASSID ] [ handle FILTERID ]\n");
- fprintf(stderr, " [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n");
- fprintf(stderr, "\n");
- fprintf(stderr, " tc filter show [ dev STRING ] [ root | parent CLASSID ]\n");
- fprintf(stderr, "Where:\n");
- fprintf(stderr, "FILTER_TYPE := { rsvp | u32 | fw | route | etc. }\n");
- fprintf(stderr, "FILTERID := ... format depends on classifier, see there\n");
- fprintf(stderr, "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
- exit(-1);
+ 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];
+};
-int tc_filter_modify(int cmd, unsigned flags, int argc, char **argv)
+static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv,
+ void *buf, size_t buflen)
{
- struct rtnl_handle rth;
- struct {
- struct nlmsghdr n;
- struct tcmsg t;
- char buf[MAX_MSG];
- } req;
+ struct tc_filter_req *req, filter_req;
struct filter_util *q = NULL;
- __u32 prio = 0;
- __u32 protocol = 0;
+ struct tc_estimator est = {};
+ char k[FILTER_NAMESZ] = {};
+ int chain_index_set = 0;
+ char d[IFNAMSIZ] = {};
+ int protocol_set = 0;
+ __u32 block_index = 0;
char *fhandle = NULL;
- char d[16];
- char k[16];
- struct tc_estimator est;
+ __u32 protocol = 0;
+ __u32 chain_index;
+ struct iovec iov;
+ __u32 prio = 0;
+ int ret;
+
+ if (buf) {
+ req = buf;
+ if (buflen < sizeof (struct tc_filter_req)) {
+ fprintf(stderr, "buffer is too small: %zu\n", buflen);
+ return -1;
+ }
+ } else {
+ memset(&filter_req, 0, sizeof (struct tc_filter_req));
+ req = &filter_req;
+ }
- memset(&req, 0, sizeof(req));
- memset(&est, 0, sizeof(est));
- memset(d, 0, sizeof(d));
- memset(k, 0, sizeof(k));
- memset(&req, 0, sizeof(req));
+ req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
+ req->n.nlmsg_flags = NLM_F_REQUEST | flags;
+ req->n.nlmsg_type = cmd;
+ req->t.tcm_family = AF_UNSPEC;
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST|flags;
- req.n.nlmsg_type = cmd;
- req.t.tcm_family = AF_UNSPEC;
+ if ((cmd == RTM_NEWTFILTER || cmd == RTM_NEWCHAIN) &&
+ 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 exlusive\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 exlusive\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");
- exit(-1);
+ if (req->t.tcm_parent) {
+ fprintf(stderr,
+ "Error: \"root\" is duplicate parent ID\n");
+ return -1;
}
- req.t.tcm_parent = TC_H_ROOT;
+ 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)
+ if (req->t.tcm_parent)
duparg("parent", *argv);
if (get_tc_classid(&handle, *argv))
- invarg(*argv, "Invalid parent ID");
- req.t.tcm_parent = handle;
+ invarg("Invalid parent ID", *argv);
+ req->t.tcm_parent = handle;
} else if (strcmp(*argv, "handle") == 0) {
NEXT_ARG();
if (fhandle)
NEXT_ARG();
if (prio)
duparg("priority", *argv);
- if (get_u32(&prio, *argv, 0))
- invarg(*argv, "invalid prpriority value");
+ 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)
+ if (protocol_set)
duparg("protocol", *argv);
if (ll_proto_a2n(&id, *argv))
- invarg(*argv, "invalid protocol");
+ 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);
argc--; argv++;
}
- req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
+ 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);
+ 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)
+ return -nodev(d);
+ } 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))
- exit(1);
+ 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");
- exit(-1);
+ 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);
- exit(-1);
+ 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_open(&rth, 0) < 0) {
- fprintf(stderr, "Cannot open rtnetlink\n");
- exit(1);
- }
- if (d[0]) {
- ll_init_map(&rth);
+ if (est.ewma_log)
+ addattr_l(&req->n, sizeof(*req), TCA_RATE, &est, sizeof(est));
- if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", d);
- rtnl_close(&rth);
- exit(1);
- }
- }
+ if (buf)
+ return 0;
- if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) {
- fprintf(stderr, "We have an error talking to the kernel\n");
- rtnl_close(&rth);
- exit(2);
+ iov.iov_base = &req->n;
+ iov.iov_len = req->n.nlmsg_len;
+ ret = rtnl_talk_iov(&rth, &iov, 1, NULL);
+ if (ret < 0) {
+ fprintf(stderr, "We have an error talking to the kernel, %d\n", ret);
+ return 2;
}
- rtnl_close(&rth);
return 0;
}
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 sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+int print_filter(struct nlmsghdr *n, void *arg)
{
- FILE *fp = (FILE*)arg;
+ FILE *fp = (FILE *)arg;
struct tcmsg *t = NLMSG_DATA(n);
int len = n->nlmsg_len;
- struct rtattr * tb[TCA_MAX+1];
+ struct rtattr *tb[TCA_MAX+1];
struct filter_util *q;
char abuf[256];
- if (n->nlmsg_type != RTM_NEWTFILTER && n->nlmsg_type != RTM_DELTFILTER) {
- fprintf(stderr, "Not a filter\n");
+ 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));
return -1;
}
- memset(tb, 0, sizeof(tb));
parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
- if (tb[TCA_KIND] == NULL) {
+ 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;
}
- if (n->nlmsg_type == RTM_DELTFILTER)
- fprintf(fp, "deleted ");
-
- fprintf(fp, "filter ");
- if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
- fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
-
- if (!filter_parent || filter_parent != t->tcm_parent) {
- if (t->tcm_parent == TC_H_ROOT)
- fprintf(fp, "root ");
- else {
- print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
- fprintf(fp, "parent %s ", abuf);
+ 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) {
- __u32 protocol = TC_H_MIN(t->tcm_info);
+
+ 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 != protocol) {
- if (protocol) {
+
+ if (!filter_protocol || filter_protocol != f_proto) {
+ if (f_proto) {
SPRINT_BUF(b1);
- fprintf(fp, "protocol %s ",
- ll_proto_n2a(protocol, b1, sizeof(b1)));
+ print_string(PRINT_ANY, "protocol",
+ "protocol %s ",
+ ll_proto_n2a(f_proto, b1, sizeof(b1)));
}
}
if (!filter_prio || filter_prio != prio) {
if (prio)
- fprintf(fp, "pref %u ", prio);
+ print_uint(PRINT_ANY, "pref", "pref %u ", prio);
}
}
- fprintf(fp, "%s ", (char*)RTA_DATA(tb[TCA_KIND]));
- q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
- if (tb[TCA_OPTIONS]) {
- if (q)
- q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
- else
- fprintf(fp, "[cannot parse parameters]");
+ 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);
}
- fprintf(fp, "\n");
- if (show_stats) {
- if (tb[TCA_STATS]) {
- if (RTA_PAYLOAD(tb[TCA_STATS]) < sizeof(struct tc_stats))
- fprintf(fp, "statistics truncated");
- else {
- struct tc_stats st;
- memcpy(&st, RTA_DATA(tb[TCA_STATS]), sizeof(st));
- print_tcstats(fp, &st);
- fprintf(fp, "\n");
- }
+ 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
+ print_string(PRINT_FP, NULL,
+ "[cannot parse parameters]", NULL);
+ close_json_object();
}
}
+ print_string(PRINT_FP, NULL, "\n", NULL);
+
+ if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) {
+ print_tcstats_attr(fp, tb, " ", NULL);
+ print_string(PRINT_FP, NULL, "\n", NULL);
+ }
+
+ close_json_object();
fflush(fp);
return 0;
}
-
-int tc_filter_list(int argc, char **argv)
+static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
{
- struct tcmsg t;
- struct rtnl_handle rth;
- char d[16];
+ 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] = {};
- memset(&t, 0, sizeof(t));
- t.tcm_family = AF_UNSPEC;
- memset(d, 0, sizeof(d));
+ 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 exlusive\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 exlusive\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 (t.tcm_parent) {
- fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
- exit(-1);
+ 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 = t.tcm_parent = TC_H_ROOT;
+ 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 (t.tcm_parent)
+ if (req.t.tcm_parent)
duparg("parent", *argv);
if (get_tc_classid(&handle, *argv))
- invarg(*argv, "invalid parent ID");
- filter_parent = t.tcm_parent = handle;
+ invarg("invalid parent ID", *argv);
+ filter_parent = req.t.tcm_parent = handle;
} else if (strcmp(*argv, "handle") == 0) {
NEXT_ARG();
if (fhandle)
if (prio)
duparg("priority", *argv);
if (get_u32(&prio, *argv, 0))
- invarg(*argv, "invalid preference");
+ 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(*argv, "invalid protocol");
+ 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);
- exit(-1);
+ fprintf(stderr,
+ " What is \"%s\"? Try \"tc filter help\"\n",
+ *argv);
+ return -1;
}
argc--; argv++;
}
- t.tcm_info = TC_H_MAKE(prio<<16, protocol);
-
- if (rtnl_open(&rth, 0) < 0) {
- fprintf(stderr, "Cannot open rtnetlink\n");
- exit(1);
- }
+ req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
ll_init_map(&rth);
if (d[0]) {
- if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", d);
- rtnl_close(&rth);
- exit(1);
+ 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;
}
- filter_ifindex = t.tcm_ifindex;
+ req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
+ req.t.tcm_block_index = block_index;
+ filter_block_index = block_index;
}
- if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
+ 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");
- rtnl_close(&rth);
- exit(1);
+ return 1;
}
- if (rtnl_dump_filter(&rth, print_filter, stdout, NULL, NULL) < 0) {
+ new_json_obj(json);
+ if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
- exit(1);
+ return 1;
}
+ delete_json_obj();
- rtnl_close(&rth);
return 0;
}
-int do_filter(int argc, char **argv)
+int do_filter(int argc, char **argv, void *buf, size_t buflen)
{
if (argc < 1)
- return tc_filter_list(0, NULL);
+ 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);
+ return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE,
+ argc-1, argv+1, buf, buflen);
if (matches(*argv, "change") == 0)
- return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
+ return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1,
+ buf, buflen);
if (matches(*argv, "replace") == 0)
- return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, argv+1);
+ return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1,
+ argv+1, buf, buflen);
if (matches(*argv, "delete") == 0)
- return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1);
-#if 0
+ return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1,
+ buf, buflen);
if (matches(*argv, "get") == 0)
return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1);
-#endif
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|| matches(*argv, "lst") == 0)
- return tc_filter_list(argc-1, argv+1);
- if (matches(*argv, "help") == 0)
+ return tc_filter_list(RTM_GETTFILTER, argc-1, argv+1);
+ if (matches(*argv, "help") == 0) {
usage();
- fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", *argv);
- exit(-1);
+ return 0;
+ }
+ fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n",
+ *argv);
+ return -1;
}
+int do_chain(int argc, char **argv, void *buf, size_t buflen)
+{
+ 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, buf, buflen);
+ } else if (matches(*argv, "delete") == 0) {
+ return tc_filter_modify(RTM_DELCHAIN, 0,
+ argc - 1, argv + 1, buf, buflen);
+ } 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;
+}
projects / mirror_iproute2.git / blobdiff