This commit was generated by cvs2svn to compensate for changes in r786,

[libnl.git] / lib / route / cls / fw.c

diff --git a/lib/route/cls/fw.c b/lib/route/cls/fw.c
new file mode 100644 (file)
index 0000000..a0cde11
--- /dev/null
+++ b/lib/route/cls/fw.c
@@ -0,0 +1,226 @@
+/*
+ * lib/route/cls/fw.c          fw classifier
+ *
+ *     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) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ * Copyright (c) 2006 Petr Gotthard <petr.gotthard@siemens.com>
+ * Copyright (c) 2006 Siemens AG Oesterreich
+ */
+
+/**
+ * @ingroup cls
+ * @defgroup fw Firewall Classifier
+ *
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink-tc.h>
+#include <netlink/netlink.h>
+#include <netlink/route/classifier.h>
+#include <netlink/route/classifier-modules.h>
+#include <netlink/route/cls/fw.h>
+
+/** @cond SKIP */
+#define FW_ATTR_CLASSID      0x001
+#define FW_ATTR_ACTION       0x002
+#define FW_ATTR_POLICE       0x004
+#define FW_ATTR_INDEV        0x008
+/** @endcond */
+
+static inline struct rtnl_fw *fw_cls(struct rtnl_cls *cls)
+{
+       return (struct rtnl_fw *) cls->c_subdata;
+}
+
+static inline struct rtnl_fw *fw_alloc(struct rtnl_cls *cls)
+{
+       if (!cls->c_subdata)
+               cls->c_subdata = calloc(1, sizeof(struct rtnl_fw));
+
+       return fw_cls(cls);
+}
+
+static struct nla_policy fw_policy[TCA_FW_MAX+1] = {
+       [TCA_FW_CLASSID]        = { .type = NLA_U32 },
+       [TCA_FW_INDEV]          = { .type = NLA_STRING,
+                                   .maxlen = IFNAMSIZ },
+};
+
+static int fw_msg_parser(struct rtnl_cls *cls)
+{
+       int err;
+       struct nlattr *tb[TCA_FW_MAX + 1];
+       struct rtnl_fw *f;
+
+       err = tca_parse(tb, TCA_FW_MAX, (struct rtnl_tca *) cls, fw_policy);
+       if (err < 0)
+               return err;
+
+       f = fw_alloc(cls);
+       if (!f)
+               goto errout_nomem;
+
+       if (tb[TCA_FW_CLASSID]) {
+               f->cf_classid = nla_get_u32(tb[TCA_FW_CLASSID]);
+               f->cf_mask |= FW_ATTR_CLASSID;
+       }
+
+       if (tb[TCA_FW_ACT]) {
+               f->cf_act = nla_get_data(tb[TCA_FW_ACT]);
+               if (!f->cf_act)
+                       goto errout_nomem;
+               f->cf_mask |= FW_ATTR_ACTION;
+       }
+
+       if (tb[TCA_FW_POLICE]) {
+               f->cf_police = nla_get_data(tb[TCA_FW_POLICE]);
+               if (!f->cf_police)
+                       goto errout_nomem;
+               f->cf_mask |= FW_ATTR_POLICE;
+       }
+
+       if (tb[TCA_FW_INDEV]) {
+               nla_strlcpy(f->cf_indev, tb[TCA_FW_INDEV], IFNAMSIZ);
+               f->cf_mask |= FW_ATTR_INDEV;
+       }
+
+       return 0;
+
+errout_nomem:
+       err = nl_errno(ENOMEM);
+
+       return err;
+}
+
+static void fw_free_data(struct rtnl_cls *cls)
+{
+       struct rtnl_fw *f = fw_cls(cls);
+
+       if (!f)
+               return;
+
+       nl_data_free(f->cf_act);
+       nl_data_free(f->cf_police);
+
+       free(cls->c_subdata);
+}
+
+static int fw_dump_brief(struct rtnl_cls *cls, struct nl_dump_params *p,
+                         int line)
+{
+       struct rtnl_fw *f = fw_cls(cls);
+       char buf[32];
+
+       if (!f)
+               goto ignore;
+
+       if (f->cf_mask & FW_ATTR_CLASSID)
+               dp_dump(p, " target %s",
+                       rtnl_tc_handle2str(f->cf_classid, buf, sizeof(buf)));
+
+ignore:
+       return line;
+}
+
+static int fw_dump_full(struct rtnl_cls *cls, struct nl_dump_params *p,
+                        int line)
+{
+       struct rtnl_fw *f = fw_cls(cls);
+
+       if (!f)
+               goto ignore;
+
+       if (f->cf_mask & FW_ATTR_INDEV)
+               dp_dump(p, "indev %s ", f->cf_indev);
+
+ignore:
+       return line;
+}
+
+static int fw_dump_stats(struct rtnl_cls *cls, struct nl_dump_params *p,
+                         int line)
+{
+       struct rtnl_fw *f = fw_cls(cls);
+
+       if (!f)
+               goto ignore;
+
+ignore:
+       return line;
+}
+
+static struct nl_msg *fw_get_opts(struct rtnl_cls *cls)
+{
+       struct rtnl_fw *f;
+       struct nl_msg *msg;
+       
+       f = fw_cls(cls);
+       if (!f)
+               return NULL;
+
+       msg = nlmsg_build_no_hdr();
+       if (!msg)
+               return NULL;
+
+       if (f->cf_mask & FW_ATTR_CLASSID)
+               nla_put_u32(msg, TCA_FW_CLASSID, f->cf_classid);
+
+       if (f->cf_mask & FW_ATTR_ACTION)
+               nla_put_data(msg, TCA_FW_ACT, f->cf_act);
+
+       if (f->cf_mask & FW_ATTR_POLICE)
+               nla_put_data(msg, TCA_FW_POLICE, f->cf_police);
+
+       if (f->cf_mask & FW_ATTR_INDEV)
+               nla_put_string(msg, TCA_FW_INDEV, f->cf_indev);
+
+       return msg;
+}
+
+/**
+ * @name Attribute Modifications
+ * @{
+ */
+
+int rtnl_fw_set_classid(struct rtnl_cls *cls, uint32_t classid)
+{
+       struct rtnl_fw *f;
+       
+       f = fw_alloc(cls);
+       if (!f)
+               return nl_errno(ENOMEM);
+
+       f->cf_classid = classid;
+       f->cf_mask |= FW_ATTR_CLASSID;
+
+       return 0;
+}
+
+/** @} */
+
+static struct rtnl_cls_ops fw_ops = {
+       .co_kind                = "fw",
+       .co_msg_parser          = fw_msg_parser,
+       .co_free_data           = fw_free_data,
+       .co_get_opts            = fw_get_opts,
+       .co_dump[NL_DUMP_BRIEF] = fw_dump_brief,
+       .co_dump[NL_DUMP_FULL]  = fw_dump_full,
+       .co_dump[NL_DUMP_STATS] = fw_dump_stats,
+};
+
+static void __init fw_init(void)
+{
+       rtnl_cls_register(&fw_ops);
+}
+
+static void __exit fw_exit(void)
+{
+       rtnl_cls_unregister(&fw_ops);
+}
+
+/** @} */