ofp-parse: New function parse_ofp_exact_flow().

[sliver-openvswitch.git] / lib / meta-flow.h

diff --git a/lib/meta-flow.h b/lib/meta-flow.h
index e062312..632cb46 100644 (file)
--- a/lib/meta-flow.h
+++ b/lib/meta-flow.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2012 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.
@@ -196,6 +196,15 @@ struct mf_field {
      * 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. */
@@ -207,6 +216,7 @@ union mf_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 {
@@ -215,6 +225,19 @@ struct mf_subfield {
     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);
@@ -241,6 +264,7 @@ 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 *);
+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);
@@ -253,12 +277,18 @@ 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 *);