enum mf_field_id {
/* Metadata. */
MFF_TUN_ID, /* be64 */
+ MFF_METADATA, /* be64 */
MFF_IN_PORT, /* be16 */
#if FLOW_N_REGS > 0
#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) */
/* L3. */
MFF_IPV4_SRC, /* be32 */
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,
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. */
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. */
struct cls_rule *);
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 *,
union mf_value *value, union mf_value *mask);
/* 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 *);
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