nl-class-delete tool

Tool based on nl-qdisc-delete to delete traffic classes.

include/netlink/cli/class.h

@@ -15,11 +15,8 @@
 #include <netlink/route/class.h>
 #include <netlink/route/class-modules.h>
 
-#define nl_cli_class_alloc_cache(sk) \
-		nl_cli_alloc_cache((sk), "traffic classes", \
-				   rtnl_class_alloc_cache)
-
 extern struct rtnl_class *nl_cli_class_alloc(void);
+extern struct nl_cache *nl_cli_class_alloc_cache(struct nl_sock *, int);
 
 extern void nl_cli_class_parse_dev(struct rtnl_class *, struct nl_cache *, char *);
 extern void nl_cli_class_parse_parent(struct rtnl_class *, char *);

src/.gitignore

@@ -22,6 +22,7 @@ nl-qdisc-add
 nl-qdisc-delete
 nl-qdisc-list
 nl-class-add
+nl-class-delete
 nl-route-add
 nl-route-delete
 nl-route-list

src/Makefile.am

@@ -7,7 +7,7 @@ AM_LDFLAGS = -L${top_builddir}/lib -L${top_builddir}/src/lib -lnl-cli
 
 sbin_PROGRAMS = \
 	nl-qdisc-add nl-qdisc-list nl-qdisc-delete \
-	nl-class-add \
+	nl-class-add nl-class-delete \
 	nl-classid-lookup
 
 noinst_PROGRAMS = \
@@ -79,6 +79,8 @@ nl_qdisc_list_LDADD = -lnl-route
 
 nl_class_add_SOURCES = nl-class-add.c
 nl_class_add_LDADD = -lnl-route
+nl_class_delete_SOURCES = nl-class-delete.c
+nl_class_delete_LDADD = -lnl-route
 
 nl_route_add_SOURCES = nl-route-add.c
 nl_route_add_LDADD = -lnl-route

src/lib/class.c

@@ -29,6 +29,20 @@ struct rtnl_class *nl_cli_class_alloc(void)
 	return class;
 }
 
+struct nl_cache *nl_cli_class_alloc_cache(struct nl_sock *sock, int ifindex)
+{
+	struct nl_cache *cache;
+	int err;
+
+	if ((err = rtnl_class_alloc_cache(sock, ifindex, &cache)) < 0)
+		nl_cli_fatal(err, "Unable to allocate class cache: %s",
+			     nl_geterror(err));
+
+	nl_cache_mngt_provide(cache);
+
+	return cache;
+}
+
 void nl_cli_class_parse_dev(struct rtnl_class *class, struct nl_cache *link_cache, char *arg)
 {
 	int ival;

src/nl-class-delete.c

@@ -0,0 +1,134 @@
+/*
+ * src/nl-class-delete.c     Delete Traffic Classes
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <netlink/cli/utils.h>
+#include <netlink/cli/class.h>
+#include <netlink/cli/link.h>
+
+static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
+struct nl_sock *sock;
+
+static void print_usage(void)
+{
+	printf(
+	"Usage: nl-class-delete [OPTION]... [class]\n"
+	"\n"
+	"OPTIONS\n"
+	"     --interactive     Run interactively.\n"
+	"     --yes             Set default answer to yes.\n"
+	" -q, --quiet           Do not print informal notifications.\n"
+	" -h, --help            Show this help text and exit.\n"
+	" -v, --version         Show versioning information and exit.\n"
+	"\n"
+	" -d, --dev=DEV         Device the class is attached to.\n"
+	" -p, --parent=ID       Identifier of parent qdisc/class.\n"
+	" -i, --id=ID           Identifier\n"
+	" -k, --kind=NAME       Kind of class (e.g. pfifo_fast)\n"
+	"\n"
+	"EXAMPLE\n"
+	"    # Delete all classes on eth0 attached to parent 1:\n"
+	"    $ nl-class-delete --dev eth0 --parent 1:\n"
+	"\n"
+	);
+
+	exit(0);
+}
+
+static void delete_cb(struct nl_object *obj, void *arg)
+{
+	struct rtnl_class *class = nl_object_priv(obj);
+	struct nl_dump_params params = {
+		.dp_type = NL_DUMP_LINE,
+		.dp_fd = stdout,
+	};
+	int err;
+
+	if (interactive && !nl_cli_confirm(obj, &params, default_yes))
+		return;
+
+	if ((err = rtnl_class_delete(sock, class)) < 0)
+		nl_cli_fatal(err, "Unable to delete class: %s\n", nl_geterror(err));
+
+	if (!quiet) {
+		printf("Deleted ");
+		nl_object_dump(obj, &params);
+	}
+
+	deleted++;
+}
+
+int main(int argc, char *argv[])
+{
+	struct rtnl_class *class;
+	struct nl_cache *link_cache, *class_cache;
+ 
+	sock = nl_cli_alloc_socket();
+	nl_cli_connect(sock, NETLINK_ROUTE);
+	link_cache = nl_cli_link_alloc_cache(sock);
+ 	class = nl_cli_class_alloc();
+ 
+	for (;;) {
+		int c, optidx = 0;
+		enum {
+			ARG_YES = 257,
+			ARG_INTERACTIVE = 258,
+		};
+		static struct option long_opts[] = {
+			{ "interactive", 0, 0, ARG_INTERACTIVE },
+			{ "yes", 0, 0, ARG_YES },
+			{ "quiet", 0, 0, 'q' },
+			{ "help", 0, 0, 'h' },
+			{ "version", 0, 0, 'v' },
+			{ "dev", 1, 0, 'd' },
+			{ "parent", 1, 0, 'p' },
+			{ "id", 1, 0, 'i' },
+			{ "kind", 1, 0, 'k' },
+			{ 0, 0, 0, 0 }
+		};
+	
+		c = getopt_long(argc, argv, "qhvd:p:i:k:", long_opts, &optidx);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case '?': nl_cli_fatal(EINVAL, "Invalid options");
+		case ARG_INTERACTIVE: interactive = 1; break;
+		case ARG_YES: default_yes = 1; break;
+		case 'q': quiet = 1; break;
+		case 'h': print_usage(); break;
+		case 'v': nl_cli_print_version(); break;
+		case 'd':
+			nl_cli_class_parse_dev(class, link_cache, optarg);
+			break;
+		case 'p':
+			nl_cli_class_parse_parent(class, optarg);
+			break;
+		case 'i':
+			nl_cli_class_parse_handle(class, optarg);
+			break;
+		case 'k':
+			nl_cli_class_parse_kind(class, optarg);
+			break;
+		}
+ 	}
+
+	if (!rtnl_class_get_ifindex(class))
+		nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
+
+	class_cache = nl_cli_class_alloc_cache(sock, rtnl_class_get_ifindex(class));
+
+	nl_cache_foreach_filter(class_cache, OBJ_CAST(class), delete_cb, NULL);
+
+	if (!quiet)
+		printf("Deleted %d classs\n", deleted);
+
+	return 0;
+}