/*
- * Copyright (c) 2010 Nicira Networks.
+ * Copyright (c) 2010, 2011 Nicira Networks.
*
* 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 "openvswitch/types.h"
struct cls_rule;
+struct ds;
struct flow;
struct ofpbuf;
struct nx_action_reg_load;
*/
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 *);
+ struct cls_rule *, ovs_be64 *cookie, ovs_be64 *cookie_mask);
+int nx_pull_match_loose(struct ofpbuf *, unsigned int match_len,
+ uint16_t priority, struct cls_rule *,
+ ovs_be64 *cookie, ovs_be64 *cookie_mask);
+int nx_put_match(struct ofpbuf *, const struct cls_rule *,
+ ovs_be64 cookie, ovs_be64 cookie_mask);
char *nx_match_to_string(const uint8_t *, unsigned int match_len);
int nx_match_from_string(const char *, struct ofpbuf *);
+uint64_t nxm_read_field_bits(ovs_be32 header, ovs_be16 ofs_nbits,
+ const struct flow *);
+
+void nxm_parse_reg_move(struct nx_action_reg_move *, const char *);
+void nxm_parse_reg_load(struct nx_action_reg_load *, const char *);
+
+void nxm_format_reg_move(const struct nx_action_reg_move *, struct ds *);
+void nxm_format_reg_load(const struct nx_action_reg_load *, struct ds *);
+
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 *);
+int nxm_src_check(ovs_be32 src, unsigned int ofs, unsigned int n_bits,
+ const struct flow *);
+int nxm_dst_check(ovs_be32 dst, unsigned int ofs, unsigned int n_bits,
+ const struct flow *);
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_reg_load(ovs_be32 dst, ovs_be16 ofs_nbits, uint64_t src_data,
+ struct flow *);
+
+int nxm_field_bytes(uint32_t header);
+int nxm_field_bits(uint32_t header);
+
+const char *nxm_parse_field_bits(const char *s,
+ uint32_t *headerp, int *ofsp, int *n_bitsp);
+void nxm_format_field_bits(struct ds *, uint32_t header, int ofs, int n_bits);
+
+/* Dealing with the 'ofs_nbits' members of struct nx_action_reg_load and struct
+ * nx_action_multipath. */
+
+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;
+}
-/* Upper bound on the length of an nx_match. The longest nx_match (assuming
- * we implement 4 registers) would be:
+static inline int
+nxm_decode_n_bits(ovs_be16 ofs_nbits)
+{
+ return (ntohs(ofs_nbits) & 0x3f) + 1;
+}
+\f
+/* Upper bound on the length of an nx_match. The longest nx_match (an
+ * IPV6 neighbor discovery message using 5 registers) would be:
*
* header value mask total
* ------ ----- ---- -----
* NXM_OF_ETH_TYPE 4 2 -- 6
* NXM_OF_VLAN_TCI 4 2 2 8
* NXM_OF_IP_TOS 4 1 -- 5
+ * NXM_NX_IP_ECN 4 1 -- 5
+ * NXM_OF_IP_TTL 4 1 -- 5
+ * NXM_NX_IP_FRAG 4 1 1 8
* 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_OF_IPV6_SRC_W 4 16 16 36
+ * NXM_OF_IPV6_DST_W 4 16 16 36
+ * NXM_OF_IPV6_LABEL 4 4 -- 8
+ * NXM_OF_ICMP_TYPE 4 1 -- 5
+ * NXM_OF_ICMP_CODE 4 1 -- 5
+ * NXM_NX_ND_TARGET 4 16 -- 20
+ * NXM_NX_ND_SLL 4 6 -- 10
* 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_REG_W(4) 4 4 4 12
* NXM_NX_TUN_ID_W 4 8 8 20
* -------------------------------------------
- * total 161
+ * total 275
*
* So this value is conservative.
*/
-#define NXM_MAX_LEN 192
+#define NXM_MAX_LEN 384
/* This is my guess at the length of a "typical" nx_match, for use in
* predicting space requirements. */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff