/*
- * Copyright (c) 2011 Nicira Networks.
+ * Copyright (c) 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#ifndef META_FLOW_H
#define META_FLOW_H 1
+#include <sys/types.h>
+#include <netinet/in.h>
#include <netinet/ip6.h>
#include "flow.h"
+#include "ofp-errors.h"
#include "packets.h"
struct cls_rule;
MFF_REG3, /* be32 */
#endif
#if FLOW_N_REGS > 4
+ MFF_REG4, /* be32 */
+#endif
+#if FLOW_N_REGS > 5
+ MFF_REG5, /* be32 */
+#endif
+#if FLOW_N_REGS > 6
+ MFF_REG6, /* be32 */
+#endif
+#if FLOW_N_REGS > 7
+ MFF_REG7, /* be32 */
+#endif
+#if FLOW_N_REGS > 8
#error
#endif
MFF_IPV6_SRC, /* ipv6 */
MFF_IPV6_DST, /* ipv6 */
+ MFF_IPV6_LABEL, /* be32 */
MFF_IP_PROTO, /* u8 (used for IPv4 or IPv6) */
- MFF_IP_TOS, /* u8 (used for IPv4 or IPv6) */
+ MFF_IP_DSCP, /* u8 (used for IPv4 or IPv6) */
+ MFF_IP_ECN, /* u8 (used for IPv4 or IPv6) */
+ MFF_IP_TTL, /* u8 (used for IPv4 or IPv6) */
+ MFF_IP_FRAG, /* u8 (used for IPv4 or IPv6) */
MFF_ARP_OP, /* be16 */
MFF_ARP_SPA, /* be32 */
MFF_UDP_SRC, /* be16 (used for IPv4 or IPv6) */
MFF_UDP_DST, /* be16 (used for IPv4 or IPv6) */
- MFF_ICMP_TYPE, /* u8 (used for IPv4 or IPv6) */
- MFF_ICMP_CODE, /* u8 (used for IPv4 or IPv6) */
+ MFF_ICMPV4_TYPE, /* u8 */
+ MFF_ICMPV4_CODE, /* u8 */
+
+ MFF_ICMPV6_TYPE, /* u8 */
+ MFF_ICMPV6_CODE, /* u8 */
/* ICMPv6 Neighbor Discovery. */
MFF_ND_TARGET, /* ipv6 */
/* L2+L3 requirements. */
MFP_TCP, /* On IPv4 or IPv6. */
MFP_UDP, /* On IPv4 or IPv6. */
+ MFP_ICMPV4,
MFP_ICMPV6,
- MFP_ICMP_ANY,
/* L2+L3+L4 requirements. */
MFP_ND,
MFS_ETHERNET,
MFS_IPV4,
MFS_IPV6,
- MFS_OFP_PORT /* An OpenFlow port number or name. */
+ MFS_OFP_PORT, /* An OpenFlow port number or name. */
+ MFS_FRAG /* no, yes, first, later, not_later */
};
struct mf_field {
/* Size.
*
- * Most fields have n_bytes * 8 == n_bits. There are only two exceptions
- * currently: "dl_vlan" is 2 bytes but only 12 bits, and "dl_vlan_pcp" is
- * 1 byte but only 3 bits. */
+ * Most fields have n_bytes * 8 == n_bits. There are a few exceptions:
+ *
+ * - "dl_vlan" is 2 bytes but only 12 bits.
+ * - "dl_vlan_pcp" is 1 byte but only 3 bits.
+ * - "is_frag" is 1 byte but only 2 bits.
+ * - "ipv6_label" is 4 bytes but only 20 bits.
+ */
unsigned int n_bytes; /* Width of the field in bytes. */
unsigned int n_bits; /* Number of significant bits in field. */
flow_wildcards_t fww_bit; /* Either 0 or exactly one FWW_* bit. */
enum mf_string string;
enum mf_prereqs prereqs;
+ bool writable; /* May be written by actions? */
+
+ /* NXM properties.
+ *
+ * A few "mf_field"s don't correspond to NXM fields. Those have 0 and
+ * NULL for the following members, respectively. */
uint32_t nxm_header; /* An NXM_* constant (a few fields have 0). */
+ const char *nxm_name; /* The "NXM_*" constant's name. */
+
+ /* OXM properties */
+ uint32_t oxm_header; /* Field id in the OXM basic class,
+ * an OXM_* constant.
+ * Ignored if oxm_name is NULL */
+ const char *oxm_name; /* The OXM_* constant's name,
+ * NULL if the field is not present
+ * in the OXM basic class */
+
};
/* The representation of a field's value. */
uint8_t mac[ETH_ADDR_LEN];
struct in6_addr ipv6;
};
+BUILD_ASSERT_DECL(sizeof(union mf_value) == 16);
+
+/* Part of a field. */
+struct mf_subfield {
+ const struct mf_field *field;
+ unsigned int ofs; /* Bit offset. */
+ unsigned int n_bits; /* Number of bits. */
+};
+
+/* Data for some part of an mf_field.
+ *
+ * The data is stored "right-justified". For example, if "union mf_subvalue
+ * value" contains NXM_OF_VLAN_TCI[0..11], then one could access the
+ * corresponding data in value.be16[7] as the bits in the mask htons(0xfff). */
+union mf_subvalue {
+ uint8_t u8[16];
+ ovs_be16 be16[8];
+ ovs_be32 be32[4];
+ ovs_be64 be64[2];
+};
+BUILD_ASSERT_DECL(sizeof(union mf_value) == sizeof (union mf_subvalue));
/* Finding mf_fields. */
const struct mf_field *mf_from_id(enum mf_field_id);
const struct mf_field *mf_from_name(const char *name);
+const struct mf_field *mf_from_nxm_header(uint32_t nxm_header);
+const struct mf_field *mf_from_nxm_name(const char *nxm_name);
/* Inspecting wildcarded bits. */
bool mf_is_all_wild(const struct mf_field *, const struct flow_wildcards *);
union mf_value *value);
void mf_set_value(const struct mf_field *, const union mf_value *value,
struct cls_rule *);
+void mf_set_flow_value(const struct mf_field *, const union mf_value *value,
+ struct flow *);
void mf_get(const struct mf_field *, const struct cls_rule *,
union mf_value *value, union mf_value *mask);
void mf_set(const struct mf_field *,
const union mf_value *value, const union mf_value *mask,
struct cls_rule *);
-void mf_set_subfield(const struct mf_field *, uint64_t value, unsigned int ofs,
- unsigned int n_bits, struct cls_rule *);
void mf_set_wild(const struct mf_field *, struct cls_rule *);
void mf_random_value(const struct mf_field *, union mf_value *value);
+/* Subfields. */
+void mf_write_subfield(const struct mf_subfield *, const union mf_subvalue *,
+ struct cls_rule *);
+void mf_set_subfield(const struct mf_subfield *, uint64_t value,
+ struct cls_rule *);
+void mf_set_subfield_value(const struct mf_subfield *, uint64_t value,
+ struct flow *);
+
+void mf_read_subfield(const struct mf_subfield *, const struct flow *,
+ union mf_subvalue *);
+uint64_t mf_get_subfield(const struct mf_subfield *, const struct flow *);
+
+
+void mf_format_subfield(const struct mf_subfield *, struct ds *);
+char *mf_parse_subfield__(struct mf_subfield *sf, const char **s);
+const char *mf_parse_subfield(struct mf_subfield *, const char *);
+
+enum ofperr mf_check_src(const struct mf_subfield *, const struct flow *);
+enum ofperr mf_check_dst(const struct mf_subfield *, const struct flow *);
+
/* Parsing and formatting. */
char *mf_parse(const struct mf_field *, const char *,
union mf_value *value, union mf_value *mask);
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