1 files changed, 152 insertions, 0 deletions
diff --git a/tc/f_basic.c b/tc/f_basic.c
new file mode 100644
index 0000000..9055370
--- /dev/null
+++ b/tc/f_basic.c
@@ -0,0 +1,152 @@
+/*
+ * f_basic.c		Basic Classifier
+ *
+ *		This program is free software; you can distribute 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:	Thomas Graf <tgraf@suug.ch>
+ *
+ */
+
+#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.h>
+
+#include "utils.h"
+#include "tc_util.h"
+#include "m_ematch.h"
+
+static void explain(void)
+{
+	fprintf(stderr,
+		"Usage: ... basic [ match EMATCH_TREE ]\n"
+		"                 [ action ACTION_SPEC ] [ classid CLASSID ]\n"
+		"\n"
+		"Where:	SELECTOR := SAMPLE SAMPLE ...\n"
+		"	FILTERID := X:Y:Z\n"
+		"	ACTION_SPEC := ... look at individual actions\n"
+		"\n"
+		"NOTE: CLASSID is parsed as hexadecimal input.\n");
+}
+
+static int basic_parse_opt(struct filter_util *qu, char *handle,
+			   int argc, char **argv, struct nlmsghdr *n)
+{
+	struct tcmsg *t = NLMSG_DATA(n);
+	struct rtattr *tail;
+	long h = 0;
+
+	if (handle) {
+		h = strtol(handle, NULL, 0);
+		if (h == LONG_MIN || h == LONG_MAX) {
+			fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
+			    handle);
+			return -1;
+		}
+	}
+	t->tcm_handle = h;
+
+	if (argc == 0)
+		return 0;
+
+	tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
+	addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
+
+	while (argc > 0) {
+		if (matches(*argv, "match") == 0) {
+			NEXT_ARG();
+			if (parse_ematch(&argc, &argv, TCA_BASIC_EMATCHES, n)) {
+				fprintf(stderr, "Illegal \"ematch\"\n");
+				return -1;
+			}
+			continue;
+		} else if (matches(*argv, "classid") == 0 ||
+			   strcmp(*argv, "flowid") == 0) {
+			unsigned int classid;
+
+			NEXT_ARG();
+			if (get_tc_classid(&classid, *argv)) {
+				fprintf(stderr, "Illegal \"classid\"\n");
+				return -1;
+			}
+			addattr_l(n, MAX_MSG, TCA_BASIC_CLASSID, &classid, 4);
+		} else if (matches(*argv, "action") == 0) {
+			NEXT_ARG();
+			if (parse_action(&argc, &argv, TCA_BASIC_ACT, n)) {
+				fprintf(stderr, "Illegal \"action\"\n");
+				return -1;
+			}
+			continue;
+
+		} else if (matches(*argv, "police") == 0) {
+			NEXT_ARG();
+			if (parse_police(&argc, &argv, TCA_BASIC_POLICE, n)) {
+				fprintf(stderr, "Illegal \"police\"\n");
+				return -1;
+			}
+			continue;
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
+	return 0;
+}
+
+static int basic_print_opt(struct filter_util *qu, FILE *f,
+			   struct rtattr *opt, __u32 handle)
+{
+	struct rtattr *tb[TCA_BASIC_MAX+1];
+
+	if (opt == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_BASIC_MAX, opt);
+
+	if (handle)
+		print_hex(PRINT_ANY, "handle",
+			  "handle 0x%x ", handle);
+
+	if (tb[TCA_BASIC_CLASSID]) {
+		uint32_t classid = rta_getattr_u32(tb[TCA_BASIC_CLASSID]);
+		SPRINT_BUF(b1);
+
+		print_string(PRINT_ANY, "flowid", "flowid %s ",
+			     sprint_tc_classid(classid, b1));
+	}
+
+	if (tb[TCA_BASIC_EMATCHES])
+		print_ematch(f, tb[TCA_BASIC_EMATCHES]);
+
+	if (tb[TCA_BASIC_POLICE]) {
+		print_nl();
+		tc_print_police(f, tb[TCA_BASIC_POLICE]);
+	}
+
+	if (tb[TCA_BASIC_ACT]) {
+		tc_print_action(f, tb[TCA_BASIC_ACT], 0);
+	}
+
+	return 0;
+}
+
+struct filter_util basic_filter_util = {
+	.id = "basic",
+	.parse_fopt = basic_parse_opt,
+	.print_fopt = basic_print_opt,
+};