/*
- * Copyright (c) 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "ofp-errors.h"
#include "packets.h"
-struct cls_rule;
struct ds;
+struct match;
/* The comment on each of these indicates the member in "union mf_value" used
* to represent its value. */
enum mf_field_id {
/* Metadata. */
MFF_TUN_ID, /* be64 */
+ MFF_TUN_SRC, /* be32 */
+ MFF_TUN_DST, /* be32 */
+ MFF_TUN_FLAGS, /* be16 */
+ MFF_TUN_TTL, /* u8 */
+ MFF_TUN_TOS, /* u8 */
+ MFF_METADATA, /* be64 */
MFF_IN_PORT, /* be16 */
+ MFF_IN_PORT_OXM, /* be32 */
+ MFF_SKB_PRIORITY, /* be32 */
+ MFF_SKB_MARK, /* be32 */
#if FLOW_N_REGS > 0
MFF_REG0, /* be32 */
#endif
#if FLOW_N_REGS > 7
MFF_REG7, /* be32 */
-#endif
-#if FLOW_N_REGS > 8
-#error
#endif
/* L2. */
MFF_ETH_TYPE, /* be16 */
MFF_VLAN_TCI, /* be16 */
- MFF_VLAN_VID, /* be16 */
- MFF_VLAN_PCP, /* u8 */
+ MFF_DL_VLAN, /* be16 (OpenFlow 1.0 compatibility) */
+ MFF_VLAN_VID, /* be16 (OpenFlow 1.2 compatibility) */
+ MFF_DL_VLAN_PCP, /* u8 (OpenFlow 1.0 compatibility) */
+ MFF_VLAN_PCP, /* be16 (OpenFlow 1.2 compatibility) */
+
+ /* L2.5 */
+ MFF_MPLS_LABEL, /* be32 */
+ MFF_MPLS_TC, /* u8 */
+ MFF_MPLS_BOS, /* u8 */
/* L3. */
MFF_IPV4_SRC, /* be32 */
MFF_IPV6_DST, /* ipv6 */
MFF_IPV6_LABEL, /* be32 */
+ /* The IPv4/IPv6 DSCP field has two different views:
+ *
+ * - MFF_IP_DSCP has the DSCP in bits 2-7, their bit positions in the
+ * IPv4 and IPv6 "traffic class" field, as used in OpenFlow 1.0 and 1.1
+ * flow format and in NXM's NXM_OF_IP_TOS
+ *
+ * - MFF_IP_DSCP has the DSCP in bits 0-5, shifted right two bits from
+ * their positions in the IPv4 and IPv6 "traffic class" field, as used
+ * in OpenFlow 1.2+ OXM's OXM_OF_IP_DSCP. */
MFF_IP_PROTO, /* u8 (used for IPv4 or IPv6) */
MFF_IP_DSCP, /* u8 (used for IPv4 or IPv6) */
+ MFF_IP_DSCP_SHIFTED, /* u8 (used for IPv4 or IPv6) (OF1.2 compat) */
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_N_IDS
};
+/* Use this macro as CASE_MFF_REGS: in a switch statement to choose all of the
+ * MFF_REGx cases. */
+#if FLOW_N_REGS == 1
+# define CASE_MFF_REGS \
+ case MFF_REG0
+#elif FLOW_N_REGS == 2
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1
+#elif FLOW_N_REGS == 3
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2
+#elif FLOW_N_REGS == 4
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3
+#elif FLOW_N_REGS == 5
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+ case MFF_REG4
+#elif FLOW_N_REGS == 6
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+ case MFF_REG4: case MFF_REG5
+#elif FLOW_N_REGS == 7
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+ case MFF_REG4: case MFF_REG5: case MFF_REG6
+#elif FLOW_N_REGS == 8
+# define CASE_MFF_REGS \
+ case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+ case MFF_REG4: case MFF_REG5: case MFF_REG6: case MFF_REG7
+#else
+# error
+#endif
+
/* Prerequisites for matching a field.
*
* A field may only be matched if the correct lower-level protocols are also
/* L2 requirements. */
MFP_ARP,
+ MFP_VLAN_VID,
MFP_IPV4,
MFP_IPV6,
MFP_IP_ANY,
+ /* L2.5 requirements. */
+ MFP_MPLS,
+
/* L2+L3 requirements. */
MFP_TCP, /* On IPv4 or IPv6. */
MFP_UDP, /* On IPv4 or IPv6. */
enum mf_maskable {
MFM_NONE, /* No sub-field masking. */
MFM_FULLY, /* Every bit is individually maskable. */
- MFM_CIDR, /* Contiguous low-order bits may be masked. */
- MFM_MCAST /* Byte 0, bit 0 is separately maskable. */
};
/* How to format or parse a field's value. */
MFS_IPV4,
MFS_IPV6,
MFS_OFP_PORT, /* An OpenFlow port number or name. */
- MFS_FRAG /* no, yes, first, later, not_later */
+ MFS_OFP_PORT_OXM, /* An OpenFlow port number or name (32-bit). */
+ MFS_FRAG, /* no, yes, first, later, not_later */
+ MFS_TNL_FLAGS, /* FLOW_TNL_F_* flags */
};
struct mf_field {
* - "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.
+ * - "mpls_label" is 4 bytes but only 20 bits.
+ * - "mpls_tc" is 1 byte but only 3 bits.
+ * - "mpls_bos" is 1 byte but only 1 bit.
*/
unsigned int n_bytes; /* Width of the field in bytes. */
unsigned int n_bits; /* Number of significant bits in field. */
/* Properties. */
enum mf_maskable maskable;
- 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.
+ /* NXM and OXM 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 */
-
+ * There are the following possibilities for these members for a given
+ * mf_field:
+ *
+ * - Neither NXM nor OXM defines such a field: these members will all be
+ * zero or NULL.
+ *
+ * - NXM and OXM both define such a field: nxm_header and oxm_header will
+ * both be nonzero and different, similarly for nxm_name and oxm_name.
+ *
+ * - Only NXM or only OXM defines such a field: nxm_header and oxm_header
+ * will both have the same value (either an OXM_* or NXM_* value) and
+ * similarly for nxm_name and oxm_name.
+ *
+ * Thus, 'nxm_header' is the appropriate header to use when outputting an
+ * NXM formatted match, since it will be an NXM_* constant when possible
+ * for compatibility with OpenFlow implementations that expect that, with
+ * OXM_* constants used for fields that OXM adds. Conversely, 'oxm_header'
+ * is the header to use when outputting an OXM formatted match. */
+ uint32_t nxm_header; /* An NXM_* (or OXM_*) constant. */
+ const char *nxm_name; /* The nxm_header constant's name. */
+ uint32_t oxm_header; /* An OXM_* (or NXM_*) constant. */
+ const char *oxm_name; /* The oxm_header constant's name */
};
/* The representation of a field's value. */
/* Prerequisites. */
bool mf_are_prereqs_ok(const struct mf_field *, const struct flow *);
-void mf_force_prereqs(const struct mf_field *, struct cls_rule *);
+void mf_force_prereqs(const struct mf_field *, struct match *);
/* Field values. */
bool mf_is_value_valid(const struct mf_field *, const union mf_value *value);
void mf_get_value(const struct mf_field *, const struct flow *,
union mf_value *value);
void mf_set_value(const struct mf_field *, const union mf_value *value,
- struct cls_rule *);
+ struct match *);
void mf_set_flow_value(const struct mf_field *, const union mf_value *value,
struct flow *);
bool mf_is_zero(const struct mf_field *, const struct flow *);
-void mf_get(const struct mf_field *, const struct cls_rule *,
+void mf_get(const struct mf_field *, const struct match *,
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 *);
+ struct match *);
-void mf_set_wild(const struct mf_field *, struct cls_rule *);
+void mf_set_wild(const struct mf_field *, struct match *);
void mf_random_value(const struct mf_field *, union mf_value *value);
/* Subfields. */
+void mf_write_subfield_flow(const struct mf_subfield *,
+ const union mf_subvalue *, struct flow *);
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 *);
+ struct match *);
void mf_read_subfield(const struct mf_subfield *, const struct flow *,
union mf_subvalue *);
void mf_format(const struct mf_field *,
const union mf_value *value, const union mf_value *mask,
struct ds *);
+void mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s);
#endif /* meta-flow.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff