datapath: Add support for VXLAN tunnels to Open vSwitch

[sliver-openvswitch.git] / include / openflow / nicira-ext.h

diff --git a/include/openflow/nicira-ext.h b/include/openflow/nicira-ext.h
index 7e49550..11b761d 100644 (file)
--- a/include/openflow/nicira-ext.h
+++ b/include/openflow/nicira-ext.h
@@ -129,10 +129,9 @@ enum nx_hash_fields {
  *      table.  If an identical flow already exists in that table only, then it
  *      is replaced.  If the flow cannot be placed in the specified table,
  *      either because the table is full or because the table cannot support
- *      flows of the given type, the switch replies with an
- *      OFPFMFC_ALL_TABLES_FULL error.  (A controller can distinguish these
- *      cases by comparing the current and maximum number of entries reported
- *      in ofp_table_stats.)
+ *      flows of the given type, the switch replies with an OFPFMFC_TABLE_FULL
+ *      error.  (A controller can distinguish these cases by comparing the
+ *      current and maximum number of entries reported in ofp_table_stats.)
  *
  *      If the table ID is wildcarded, the switch picks an appropriate table
  *      itself.  If an identical flow already exist in the selected flow table,
@@ -304,6 +303,7 @@ enum nx_action_subtype {
     NXAST_FIN_TIMEOUT,          /* struct nx_action_fin_timeout */
     NXAST_CONTROLLER,           /* struct nx_action_controller */
     NXAST_DEC_TTL_CNT_IDS,      /* struct nx_action_cnt_ids */
+    NXAST_WRITE_METADATA,       /* struct nx_action_write_metadata */
 };
 
 /* Header for Nicira-defined actions. */
@@ -503,6 +503,10 @@ OFP_ASSERT(sizeof(struct nx_action_pop_queue) == 16);
  * The switch will reject actions for which src_ofs+n_bits is greater than the
  * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with
  * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT.
+ *
+ * This action behaves properly when 'src' overlaps with 'dst', that is, it
+ * behaves as if 'src' were copied out to a temporary buffer, then the
+ * temporary buffer copied to 'dst'.
  */
 struct nx_action_reg_move {
     ovs_be16 type;                  /* OFPAT_VENDOR. */
@@ -1512,7 +1516,7 @@ OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
  * otherwise.  Only ARP opcodes between 1 and 255 should be specified for
  * matching.
  *
- * Prereqs: NXM_OF_ETH_TYPE must match 0x0806 exactly.
+ * Prereqs: NXM_OF_ETH_TYPE must match either 0x0806 or 0x8035.
  *
  * Format: 16-bit integer in network byte order.
  *
@@ -1522,7 +1526,7 @@ OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
 /* For an Ethernet+IP ARP packet, the source or target protocol address
  * in the ARP header.  Always 0 otherwise.
  *
- * Prereqs: NXM_OF_ETH_TYPE must match 0x0806 exactly.
+ * Prereqs: NXM_OF_ETH_TYPE must match either 0x0806 or 0x8035.
  *
  * Format: 32-bit integer in network byte order.
  *
@@ -1574,9 +1578,11 @@ OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
 
 /* Tunnel ID.
  *
- * For a packet received via GRE tunnel including a (32-bit) key, the key is
- * stored in the low 32-bits and the high bits are zeroed.  For other packets,
- * the value is 0.
+ * For a packet received via a GRE or VXLAN tunnel including a (32-bit) key, the
+ * key is stored in the low 32-bits and the high bits are zeroed.  For other
+ * packets, the value is 0.
+ *
+ * All zero bits, for packets not received via a keyed tunnel.
  *
  * Prereqs: None.
  *
@@ -1589,7 +1595,7 @@ OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
 /* For an Ethernet+IP ARP packet, the source or target hardware address
  * in the ARP header.  Always 0 otherwise.
  *
- * Prereqs: NXM_OF_ETH_TYPE must match 0x0806 exactly.
+ * Prereqs: NXM_OF_ETH_TYPE must match either 0x0806 or 0x8035.
  *
  * Format: 48-bit Ethernet MAC address.
  *
@@ -1763,8 +1769,7 @@ OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
 
 enum nx_flow_format {
     NXFF_OPENFLOW10 = 0,         /* Standard OpenFlow 1.0 compatible. */
-    NXFF_NXM = 2,                /* Nicira extended match. */
-    NXFF_OPENFLOW12 = 3          /* OpenFlow 1.2 format. */
+    NXFF_NXM = 2                 /* Nicira extended match. */
 };
 
 /* NXT_SET_FLOW_FORMAT request. */
@@ -2192,4 +2197,18 @@ struct nx_flow_monitor_cancel {
 };
 OFP_ASSERT(sizeof(struct nx_flow_monitor_cancel) == 4);
 
+/* Action structure for NXAST_WRITE_METADATA.
+ *
+ * Modifies the 'mask' bits of the metadata value. */
+struct nx_action_write_metadata {
+    ovs_be16 type;                  /* OFPAT_VENDOR. */
+    ovs_be16 len;                   /* Length is 32. */
+    ovs_be32 vendor;                /* NX_VENDOR_ID. */
+    ovs_be16 subtype;               /* NXAST_WRITE_METADATA. */
+    uint8_t zeros[6];               /* Must be zero. */
+    ovs_be64 metadata;              /* Metadata register. */
+    ovs_be64 mask;                  /* Metadata mask. */
+};
+OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32);
+
 #endif /* openflow/nicira-ext.h */