/*
- * Copyright (c) 2010 Nicira Networks.
+ * Copyright (c) 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#define NX_MATCH_H 1
#include <stdint.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include "compiler.h"
+#include "flow.h"
+#include "ofp-errors.h"
+#include "openvswitch/types.h"
-struct cls_rule;
-struct flow;
+struct ds;
+struct match;
+struct mf_field;
+struct mf_subfield;
+struct ofpact_reg_move;
+struct ofpact_reg_load;
+struct ofpact_stack;
struct ofpbuf;
struct nx_action_reg_load;
struct nx_action_reg_move;
+
/* Nicira Extended Match (NXM) flexible flow match helper functions.
*
* See include/openflow/nicira-ext.h for NXM specification.
*/
-int nx_pull_match(struct ofpbuf *, unsigned int match_len, uint16_t priority,
- struct cls_rule *);
-int nx_put_match(struct ofpbuf *, const struct cls_rule *);
+enum ofperr nx_pull_match(struct ofpbuf *, unsigned int match_len,
+ struct match *,
+ ovs_be64 *cookie, ovs_be64 *cookie_mask);
+enum ofperr nx_pull_match_loose(struct ofpbuf *, unsigned int match_len,
+ struct match *, ovs_be64 *cookie,
+ ovs_be64 *cookie_mask);
+enum ofperr oxm_pull_match(struct ofpbuf *, struct match *);
+enum ofperr oxm_pull_match_loose(struct ofpbuf *, struct match *);
+int nx_put_match(struct ofpbuf *, const struct match *,
+ ovs_be64 cookie, ovs_be64 cookie_mask);
+int oxm_put_match(struct ofpbuf *, const struct match *);
char *nx_match_to_string(const uint8_t *, unsigned int match_len);
+char *oxm_match_to_string(const struct ofpbuf *, unsigned int match_len);
int nx_match_from_string(const char *, struct ofpbuf *);
+int oxm_match_from_string(const char *, struct ofpbuf *);
-int nxm_check_reg_move(const struct nx_action_reg_move *, const struct flow *);
-int nxm_check_reg_load(const struct nx_action_reg_load *, const struct flow *);
+char *nxm_parse_reg_move(struct ofpact_reg_move *, const char *)
+ WARN_UNUSED_RESULT;
+char *nxm_parse_reg_load(struct ofpact_reg_load *, const char *)
+ WARN_UNUSED_RESULT;
-void nxm_execute_reg_move(const struct nx_action_reg_move *, struct flow *);
-void nxm_execute_reg_load(const struct nx_action_reg_load *, struct flow *);
+void nxm_format_reg_move(const struct ofpact_reg_move *, struct ds *);
+void nxm_format_reg_load(const struct ofpact_reg_load *, struct ds *);
-/* Upper bound on the length of an nx_match. The longest nx_match (assuming
- * we implement 4 registers) would be:
- *
- * header value mask total
- * ------ ----- ---- -----
- * NXM_OF_IN_PORT 4 2 -- 6
- * NXM_OF_ETH_DST_W 4 6 6 16
- * NXM_OF_ETH_SRC 4 6 -- 10
- * NXM_OF_ETH_TYPE 4 2 -- 6
- * NXM_OF_VLAN_TCI 4 2 2 8
- * NXM_OF_IP_TOS 4 1 -- 5
- * NXM_OF_IP_PROTO 4 2 -- 6
- * NXM_OF_IP_SRC_W 4 4 4 12
- * NXM_OF_IP_DST_W 4 4 4 12
- * NXM_OF_TCP_SRC 4 2 -- 6
- * NXM_OF_TCP_DST 4 2 -- 6
- * NXM_NX_REG_W(0) 4 4 4 12
- * NXM_NX_REG_W(1) 4 4 4 12
- * NXM_NX_REG_W(2) 4 4 4 12
- * NXM_NX_REG_W(3) 4 4 4 12
- * NXM_NX_TUN_ID_W 4 8 8 20
- * -------------------------------------------
- * total 161
- *
- * So this value is conservative.
- */
-#define NXM_MAX_LEN 192
+enum ofperr nxm_reg_move_from_openflow(const struct nx_action_reg_move *,
+ struct ofpbuf *ofpacts);
+enum ofperr nxm_reg_load_from_openflow(const struct nx_action_reg_load *,
+ struct ofpbuf *ofpacts);
+
+enum ofperr nxm_reg_move_check(const struct ofpact_reg_move *,
+ const struct flow *);
+enum ofperr nxm_reg_load_check(const struct ofpact_reg_load *,
+ const struct flow *);
+
+void nxm_reg_move_to_nxast(const struct ofpact_reg_move *,
+ struct ofpbuf *openflow);
+void nxm_reg_load_to_nxast(const struct ofpact_reg_load *,
+ struct ofpbuf *openflow);
+
+void nxm_execute_reg_move(const struct ofpact_reg_move *, struct flow *,
+ struct flow_wildcards *);
+void nxm_execute_reg_load(const struct ofpact_reg_load *, struct flow *,
+ struct flow_wildcards *);
+void nxm_reg_load(const struct mf_subfield *, uint64_t src_data,
+ struct flow *, struct flow_wildcards *);
+
+char *nxm_parse_stack_action(struct ofpact_stack *, const char *)
+ WARN_UNUSED_RESULT;
+
+void nxm_format_stack_push(const struct ofpact_stack *, struct ds *);
+void nxm_format_stack_pop(const struct ofpact_stack *, struct ds *);
+
+enum ofperr nxm_stack_push_from_openflow(const struct nx_action_stack *,
+ struct ofpbuf *ofpacts);
+enum ofperr nxm_stack_pop_from_openflow(const struct nx_action_stack *,
+ struct ofpbuf *ofpacts);
+enum ofperr nxm_stack_push_check(const struct ofpact_stack *,
+ const struct flow *);
+enum ofperr nxm_stack_pop_check(const struct ofpact_stack *,
+ const struct flow *);
+
+void nxm_stack_push_to_nxast(const struct ofpact_stack *,
+ struct ofpbuf *openflow);
+void nxm_stack_pop_to_nxast(const struct ofpact_stack *,
+ struct ofpbuf *openflow);
+
+void nxm_execute_stack_push(const struct ofpact_stack *,
+ const struct flow *, struct flow_wildcards *,
+ struct ofpbuf *);
+void nxm_execute_stack_pop(const struct ofpact_stack *,
+ struct flow *, struct flow_wildcards *,
+ struct ofpbuf *);
+
+int nxm_field_bytes(uint32_t header);
+int nxm_field_bits(uint32_t header);
+
+/* Dealing with the 'ofs_nbits' members in several Nicira extensions. */
+
+static inline ovs_be16
+nxm_encode_ofs_nbits(int ofs, int n_bits)
+{
+ return htons((ofs << 6) | (n_bits - 1));
+}
+
+static inline int
+nxm_decode_ofs(ovs_be16 ofs_nbits)
+{
+ return ntohs(ofs_nbits) >> 6;
+}
+static inline int
+nxm_decode_n_bits(ovs_be16 ofs_nbits)
+{
+ return (ntohs(ofs_nbits) & 0x3f) + 1;
+}
+\f
/* This is my guess at the length of a "typical" nx_match, for use in
* predicting space requirements. */
#define NXM_TYPICAL_LEN 64
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