Support for meta match

Syntax:
	meta(pktlen > 768)

3 files changed, 131 insertions, 0 deletions

diff --git a/include/linux/tc_ematch/tc_em_meta.h b/include/linux/tc_ematch/tc_em_meta.h
new file mode 100644
index 0000000..fe815e2
--- /dev/null
+++ b/include/linux/tc_ematch/tc_em_meta.h
@@ -0,0 +1,89 @@
+#ifndef __LINUX_TC_EM_META_H
+#define __LINUX_TC_EM_META_H
+
+enum {
+	TCA_EM_META_UNSPEC,
+	TCA_EM_META_HDR,
+	TCA_EM_META_LVALUE,
+	TCA_EM_META_RVALUE,
+	__TCA_EM_META_MAX
+};
+#define TCA_EM_META_MAX (__TCA_EM_META_MAX - 1)
+
+struct tcf_meta_val {
+	__u16			kind;
+	__u8			shift;
+	__u8			op;
+};
+
+#define TCF_META_TYPE_MASK	(0xf << 12)
+#define TCF_META_TYPE(kind)	(((kind) & TCF_META_TYPE_MASK) >> 12)
+#define TCF_META_ID_MASK	0x7ff
+#define TCF_META_ID(kind)	((kind) & TCF_META_ID_MASK)
+
+enum {
+	TCF_META_TYPE_VAR,
+	TCF_META_TYPE_INT,
+	__TCF_META_TYPE_MAX
+};
+#define TCF_META_TYPE_MAX (__TCF_META_TYPE_MAX - 1)
+
+enum {
+	TCF_META_ID_VALUE,
+	TCF_META_ID_RANDOM,
+	TCF_META_ID_LOADAVG_0,
+	TCF_META_ID_LOADAVG_1,
+	TCF_META_ID_LOADAVG_2,
+	TCF_META_ID_DEV,
+	TCF_META_ID_PRIORITY,
+	TCF_META_ID_PROTOCOL,
+	TCF_META_ID_PKTTYPE,
+	TCF_META_ID_PKTLEN,
+	TCF_META_ID_DATALEN,
+	TCF_META_ID_MACLEN,
+	TCF_META_ID_NFMARK,
+	TCF_META_ID_TCINDEX,
+	TCF_META_ID_RTCLASSID,
+	TCF_META_ID_RTIIF,
+	TCF_META_ID_SK_FAMILY,
+	TCF_META_ID_SK_STATE,
+	TCF_META_ID_SK_REUSE,
+	TCF_META_ID_SK_BOUND_IF,
+	TCF_META_ID_SK_REFCNT,
+	TCF_META_ID_SK_SHUTDOWN,
+	TCF_META_ID_SK_PROTO,
+	TCF_META_ID_SK_TYPE,
+	TCF_META_ID_SK_RCVBUF,
+	TCF_META_ID_SK_RMEM_ALLOC,
+	TCF_META_ID_SK_WMEM_ALLOC,
+	TCF_META_ID_SK_OMEM_ALLOC,
+	TCF_META_ID_SK_WMEM_QUEUED,
+	TCF_META_ID_SK_RCV_QLEN,
+	TCF_META_ID_SK_SND_QLEN,
+ 	TCF_META_ID_SK_ERR_QLEN,
+	TCF_META_ID_SK_FORWARD_ALLOCS,
+	TCF_META_ID_SK_SNDBUF,
+ 	TCF_META_ID_SK_ALLOCS,
+ 	TCF_META_ID_SK_ROUTE_CAPS,
+ 	TCF_META_ID_SK_HASH,
+ 	TCF_META_ID_SK_LINGERTIME,
+ 	TCF_META_ID_SK_ACK_BACKLOG,
+ 	TCF_META_ID_SK_MAX_ACK_BACKLOG,
+ 	TCF_META_ID_SK_PRIO,
+ 	TCF_META_ID_SK_RCVLOWAT,
+ 	TCF_META_ID_SK_RCVTIMEO,
+ 	TCF_META_ID_SK_SNDTIMEO,
+ 	TCF_META_ID_SK_SENDMSG_OFF,
+ 	TCF_META_ID_SK_WRITE_PENDING,
+	TCF_META_ID_VLAN_TAG,
+	TCF_META_ID_RXHASH,
+	__TCF_META_ID_MAX
+};
+#define TCF_META_ID_MAX (__TCF_META_ID_MAX - 1)
+
+struct tcf_meta_hdr {
+	struct tcf_meta_val	left;
+	struct tcf_meta_val	right;
+};
+
+#endif
diff --git a/include/netlink/route/cls/ematch.h b/include/netlink/route/cls/ematch.h
index 52c4750..13f9c32 100644
--- a/include/netlink/route/cls/ematch.h
+++ b/include/netlink/route/cls/ematch.h
@@ -86,6 +86,7 @@ extern int			rtnl_ematch_parse_expr(const char *, char **,
 
 extern char *			rtnl_ematch_offset2txt(uint8_t, uint16_t,
 						       char *, size_t);
+extern char *			rtnl_ematch_opnd2txt(uint8_t, char *, size_t);
 
 #ifdef __cplusplus
 }
diff --git a/include/netlink/route/cls/ematch/meta.h b/include/netlink/route/cls/ematch/meta.h
new file mode 100644
index 0000000..2fe5899
--- /dev/null
+++ b/include/netlink/route/cls/ematch/meta.h
@@ -0,0 +1,41 @@
+/*
+ * netlink/route/cls/ematch/meta.h	Metadata Match
+ *
+ *	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>
+ */
+
+#ifndef NETLINK_CLS_EMATCH_META_H_
+#define NETLINK_CLS_EMATCH_META_H_
+
+#include <netlink/netlink.h>
+#include <netlink/route/cls/ematch.h>
+#include <linux/tc_ematch/tc_em_meta.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct rtnl_meta_value;
+
+extern struct rtnl_meta_value *	rtnl_meta_value_alloc_int(uint64_t);
+extern struct rtnl_meta_value *	rtnl_meta_value_alloc_var(void *, size_t);
+extern struct rtnl_meta_value *	rtnl_meta_value_alloc_id(uint8_t, uint16_t,
+							  uint8_t, uint64_t);
+extern void	rtnl_meta_value_put(struct rtnl_meta_value *);
+
+extern void	rtnl_ematch_meta_set_lvalue(struct rtnl_ematch *,
+					    struct rtnl_meta_value *);
+void		rtnl_ematch_meta_set_rvalue(struct rtnl_ematch *,
+					    struct rtnl_meta_value *);
+extern void	rtnl_ematch_meta_set_operand(struct rtnl_ematch *, uint8_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif