Adding upstream version 6.8.0.upstream/6.8.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 357 insertions, 0 deletions

diff --git a/tc/tc.c b/tc/tc.c
new file mode 100644
index 0000000..575157a
--- /dev/null
+++ b/tc/tc.c
@@ -0,0 +1,357 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * tc.c		"tc" utility frontend.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <errno.h>
+
+#include "version.h"
+#include "utils.h"
+#include "tc_util.h"
+#include "tc_common.h"
+#include "namespace.h"
+#include "rt_names.h"
+#include "bpf_util.h"
+
+int show_stats;
+int show_details;
+int show_raw;
+int show_graph;
+int timestamp;
+
+int batch_mode;
+int use_iec;
+int force;
+bool use_names;
+int json;
+int oneline;
+int brief;
+
+static char *conf_file;
+
+struct rtnl_handle rth;
+
+static void *BODY;	/* cached handle dlopen(NULL) */
+static struct qdisc_util *qdisc_list;
+static struct filter_util *filter_list;
+
+static int print_noqopt(struct qdisc_util *qu, FILE *f,
+			struct rtattr *opt)
+{
+	if (opt && RTA_PAYLOAD(opt))
+		fprintf(f, "[Unknown qdisc, optlen=%u] ",
+			(unsigned int) RTA_PAYLOAD(opt));
+	return 0;
+}
+
+static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv,
+			struct nlmsghdr *n, const char *dev)
+{
+	if (argc) {
+		fprintf(stderr,
+			"Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n",
+			qu->id, *argv);
+		return -1;
+	}
+	return 0;
+}
+
+static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle)
+{
+	if (opt && RTA_PAYLOAD(opt))
+		fprintf(f, "fh %08x [Unknown filter, optlen=%u] ",
+			fhandle, (unsigned int) RTA_PAYLOAD(opt));
+	else if (fhandle)
+		fprintf(f, "fh %08x ", fhandle);
+	return 0;
+}
+
+static int parse_nofopt(struct filter_util *qu, char *fhandle,
+			int argc, char **argv, struct nlmsghdr *n)
+{
+	__u32 handle;
+
+	if (argc) {
+		fprintf(stderr,
+			"Unknown filter \"%s\", hence option \"%s\" is unparsable\n",
+			qu->id, *argv);
+		return -1;
+	}
+	if (fhandle) {
+		struct tcmsg *t = NLMSG_DATA(n);
+
+		if (get_u32(&handle, fhandle, 16)) {
+			fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle);
+			return -1;
+		}
+		t->tcm_handle = handle;
+	}
+	return 0;
+}
+
+struct qdisc_util *get_qdisc_kind(const char *str)
+{
+	void *dlh;
+	char buf[256];
+	struct qdisc_util *q;
+
+	for (q = qdisc_list; q; q = q->next)
+		if (strcmp(q->id, str) == 0)
+			return q;
+
+	snprintf(buf, sizeof(buf), "%s/q_%s.so", get_tc_lib(), str);
+	dlh = dlopen(buf, RTLD_LAZY);
+	if (!dlh) {
+		/* look in current binary, only open once */
+		dlh = BODY;
+		if (dlh == NULL) {
+			dlh = BODY = dlopen(NULL, RTLD_LAZY);
+			if (dlh == NULL)
+				goto noexist;
+		}
+	}
+
+	snprintf(buf, sizeof(buf), "%s_qdisc_util", str);
+	q = dlsym(dlh, buf);
+	if (q == NULL)
+		goto noexist;
+
+reg:
+	q->next = qdisc_list;
+	qdisc_list = q;
+	return q;
+
+noexist:
+	q = calloc(1, sizeof(*q));
+	if (q) {
+		q->id = strdup(str);
+		q->parse_qopt = parse_noqopt;
+		q->print_qopt = print_noqopt;
+		goto reg;
+	}
+	return q;
+}
+
+
+struct filter_util *get_filter_kind(const char *str)
+{
+	void *dlh;
+	char buf[256];
+	struct filter_util *q;
+
+	for (q = filter_list; q; q = q->next)
+		if (strcmp(q->id, str) == 0)
+			return q;
+
+	snprintf(buf, sizeof(buf), "%s/f_%s.so", get_tc_lib(), str);
+	dlh = dlopen(buf, RTLD_LAZY);
+	if (dlh == NULL) {
+		dlh = BODY;
+		if (dlh == NULL) {
+			dlh = BODY = dlopen(NULL, RTLD_LAZY);
+			if (dlh == NULL)
+				goto noexist;
+		}
+	}
+
+	snprintf(buf, sizeof(buf), "%s_filter_util", str);
+	q = dlsym(dlh, buf);
+	if (q == NULL)
+		goto noexist;
+
+reg:
+	q->next = filter_list;
+	filter_list = q;
+	return q;
+noexist:
+	q = calloc(1, sizeof(*q));
+	if (q) {
+		strncpy(q->id, str, 15);
+		q->parse_fopt = parse_nofopt;
+		q->print_fopt = print_nofopt;
+		goto reg;
+	}
+	return q;
+}
+
+static void usage(void)
+{
+	fprintf(stderr,
+		"Usage:	tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
+		"	tc [-force] -batch filename\n"
+		"where  OBJECT := { qdisc | class | filter | chain |\n"
+		"		    action | monitor | exec }\n"
+		"       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[aw] |\n"
+		"		    -o[neline] | -j[son] | -p[retty] | -c[olor]\n"
+		"		    -b[atch] [filename] | -n[etns] name | -N[umeric] |\n"
+		"		     -nm | -nam[es] | { -cf | -conf } path\n"
+		"		     -br[ief] }\n");
+}
+
+static int do_cmd(int argc, char **argv)
+{
+	if (matches(*argv, "qdisc") == 0)
+		return do_qdisc(argc-1, argv+1);
+	if (matches(*argv, "class") == 0)
+		return do_class(argc-1, argv+1);
+	if (matches(*argv, "filter") == 0)
+		return do_filter(argc-1, argv+1);
+	if (matches(*argv, "chain") == 0)
+		return do_chain(argc-1, argv+1);
+	if (matches(*argv, "actions") == 0)
+		return do_action(argc-1, argv+1);
+	if (matches(*argv, "monitor") == 0)
+		return do_tcmonitor(argc-1, argv+1);
+	if (matches(*argv, "exec") == 0)
+		return do_exec(argc-1, argv+1);
+	if (matches(*argv, "help") == 0) {
+		usage();
+		return 0;
+	}
+
+	fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n",
+		*argv);
+	return -1;
+}
+
+static int tc_batch_cmd(int argc, char *argv[], void *data)
+{
+	return do_cmd(argc, argv);
+}
+
+static int batch(const char *name)
+{
+	int ret;
+
+	batch_mode = 1;
+	tc_core_init();
+
+	if (rtnl_open(&rth, 0) < 0) {
+		fprintf(stderr, "Cannot open rtnetlink\n");
+		return -1;
+	}
+
+	ret = do_batch(name, force, tc_batch_cmd, NULL);
+
+	rtnl_close(&rth);
+	return ret;
+}
+
+
+int main(int argc, char **argv)
+{
+	const char *libbpf_version;
+	char *batch_file = NULL;
+	int color = CONF_COLOR;
+	int ret;
+
+	while (argc > 1) {
+		if (argv[1][0] != '-')
+			break;
+		if (matches(argv[1], "-stats") == 0 ||
+			 matches(argv[1], "-statistics") == 0) {
+			++show_stats;
+		} else if (matches(argv[1], "-details") == 0) {
+			++show_details;
+		} else if (matches(argv[1], "-raw") == 0) {
+			++show_raw;
+		} else if (matches(argv[1], "-pretty") == 0) {
+			++pretty;
+		} else if (matches(argv[1], "-graph") == 0) {
+			show_graph = 1;
+		} else if (matches(argv[1], "-Version") == 0) {
+			printf("tc utility, iproute2-%s", version);
+			libbpf_version = get_libbpf_version();
+			if (libbpf_version)
+				printf(", libbpf %s", libbpf_version);
+			printf("\n");
+			return 0;
+		} else if (matches(argv[1], "-iec") == 0) {
+			++use_iec;
+		} else if (matches(argv[1], "-help") == 0) {
+			usage();
+			return 0;
+		} else if (matches(argv[1], "-force") == 0) {
+			++force;
+		} else if (matches(argv[1], "-batch") == 0) {
+			argc--;	argv++;
+			if (argc <= 1)
+				usage();
+			batch_file = argv[1];
+		} else if (matches(argv[1], "-netns") == 0) {
+			NEXT_ARG();
+			if (netns_switch(argv[1]))
+				return -1;
+		} else if (matches(argv[1], "-Numeric") == 0) {
+			++numeric;
+		} else if (matches(argv[1], "-names") == 0 ||
+				matches(argv[1], "-nm") == 0) {
+			use_names = true;
+		} else if (matches(argv[1], "-cf") == 0 ||
+				matches(argv[1], "-conf") == 0) {
+			NEXT_ARG();
+			conf_file = argv[1];
+		} else if (matches_color(argv[1], &color)) {
+		} else if (matches(argv[1], "-timestamp") == 0) {
+			timestamp++;
+		} else if (matches(argv[1], "-tshort") == 0) {
+			++timestamp;
+			++timestamp_short;
+		} else if (matches(argv[1], "-json") == 0) {
+			++json;
+		} else if (matches(argv[1], "-oneline") == 0) {
+			++oneline;
+		} else if (matches(argv[1], "-brief") == 0) {
+			++brief;
+		} else {
+			fprintf(stderr,
+				"Option \"%s\" is unknown, try \"tc -help\".\n",
+				argv[1]);
+			return -1;
+		}
+		argc--;	argv++;
+	}
+
+	_SL_ = oneline ? "\\" : "\n";
+
+	check_enable_color(color, json);
+
+	if (batch_file)
+		return batch(batch_file);
+
+	if (argc <= 1) {
+		usage();
+		return 0;
+	}
+
+	tc_core_init();
+	if (rtnl_open(&rth, 0) < 0) {
+		fprintf(stderr, "Cannot open rtnetlink\n");
+		exit(1);
+	}
+
+	if (use_names && cls_names_init(conf_file)) {
+		ret = -1;
+		goto Exit;
+	}
+
+	ret = do_cmd(argc-1, argv+1);
+Exit:
+	rtnl_close(&rth);
+
+	if (use_names)
+		cls_names_uninit();
+
+	return ret;
+}