nl-cls-* tools

cli based tools to add/update/list/delete classifiers

2 files changed, 117 insertions, 1 deletions

diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index e806633..3236dbe 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -34,6 +34,7 @@ libnl_cli_la_LIBADD  = ${top_builddir}/lib/libnl.la \
 		       ${top_builddir}/lib/libnl-genl.la
 
 libnl_cli_la_SOURCES = \
-	utils.c addr.c ct.c link.c neigh.c tc.c qdisc.c class.c rule.c route.c
+	utils.c addr.c ct.c link.c neigh.c rule.c route.c \
+	tc.c qdisc.c class.c cls.c
 #	cls/ematch_syntax.c cls/ematch_grammar.c cls/ematch.c
 #	cls/pktloc_syntax.c cls/pktloc_grammar.c cls/utils.c
diff --git a/src/lib/cls.c b/src/lib/cls.c
new file mode 100644
index 0000000..95997f5
--- /dev/null
+++ b/src/lib/cls.c
@@ -0,0 +1,115 @@
+/*
+ * src/lib/cls.c     	CLI Classifier Helpers
+ *
+ *	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>
+ */
+
+/**
+ * @ingroup cli
+ * @defgroup cli_cls Classifiers
+ * @{
+ */
+
+#include <netlink/cli/utils.h>
+#include <netlink/cli/cls.h>
+
+struct rtnl_cls *nl_cli_cls_alloc(void)
+{
+	struct rtnl_cls *cls;
+
+	cls = rtnl_cls_alloc();
+	if (!cls)
+		nl_cli_fatal(ENOMEM, "Unable to allocate classifier object");
+
+	return cls;
+}
+
+struct nl_cache *nl_cli_cls_alloc_cache(struct nl_sock *sock, int ifindex,
+					uint32_t parent)
+{
+	struct nl_cache *cache;
+	int err;
+
+	if ((err = rtnl_cls_alloc_cache(sock, ifindex, parent, &cache)) < 0)
+		nl_cli_fatal(err, "Unable to allocate classifier cache: %s",
+			     nl_geterror(err));
+
+	return cache;
+}
+
+void nl_cli_cls_parse_kind(struct rtnl_cls *cls, char *arg)
+{
+	rtnl_cls_set_kind(cls, arg);
+}
+
+void nl_cli_cls_parse_proto(struct rtnl_cls *cls, char *arg)
+{
+	int proto;
+
+	if ((proto = nl_str2ether_proto(arg)) < 0)
+		nl_cli_fatal(proto, "Unknown protocol \"%s\".", arg);
+
+	rtnl_cls_set_protocol(cls, proto);
+}
+
+static NL_LIST_HEAD(cls_modules);
+
+struct nl_cli_cls_module *__nl_cli_cls_lookup(struct rtnl_cls_ops *ops)
+{
+	struct nl_cli_cls_module *cm;
+
+	nl_list_for_each_entry(cm, &cls_modules, cm_list)
+		if (cm->cm_ops == ops)
+			return cm;
+
+	return NULL;
+}
+
+struct nl_cli_cls_module *nl_cli_cls_lookup(struct rtnl_cls_ops *ops)
+{
+	struct nl_cli_cls_module *cm;
+
+	if ((cm = __nl_cli_cls_lookup(ops)))
+		return cm;
+
+	nl_cli_load_module("cli/cls", ops->co_kind);
+
+	if (!(cm = __nl_cli_cls_lookup(ops)))  {
+		nl_cli_fatal(EINVAL, "Application bug: The shared library for "
+			"the classifier \"%s\" was successfully loaded but it "
+			"seems that module did not register itself");
+	}
+
+	return cm;
+}
+
+void nl_cli_cls_register(struct nl_cli_cls_module *cm)
+{
+	struct rtnl_cls_ops *ops;
+
+	if (!(ops = __rtnl_cls_lookup_ops(cm->cm_name))) {
+		nl_cli_fatal(ENOENT, "Unable to register CLI classifier module "
+		"\"%s\": No matching libnl cls module found.", cm->cm_name);
+	}
+
+	if (__nl_cli_cls_lookup(ops)) {
+		nl_cli_fatal(EEXIST, "Unable to register CLI classifier module "
+		"\"%s\": Module already registered.", cm->cm_name);
+	}
+
+	cm->cm_ops = ops;
+
+	nl_list_add_tail(&cm->cm_list, &cls_modules);
+}
+
+void nl_cli_cls_unregister(struct nl_cli_cls_module *cm)
+{
+	nl_list_del(&cm->cm_list);
+}
+
+/** @} */