Port the BGP implementation of SDN-IP.
diff --git a/apps/sdnip/src/main/java/org/onlab/onos/sdnip/bgp/BgpConstants.java b/apps/sdnip/src/main/java/org/onlab/onos/sdnip/bgp/BgpConstants.java
new file mode 100644
index 0000000..1703138
--- /dev/null
+++ b/apps/sdnip/src/main/java/org/onlab/onos/sdnip/bgp/BgpConstants.java
@@ -0,0 +1,368 @@
+package org.onlab.onos.sdnip.bgp;
+
+/**
+ * BGP related constants.
+ */
+public final class BgpConstants {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private BgpConstants() {
+ }
+
+ /** BGP port number (RFC 4271). */
+ public static final int BGP_PORT = 179;
+
+ /** BGP version. */
+ public static final int BGP_VERSION = 4;
+
+ /** BGP OPEN message type. */
+ public static final int BGP_TYPE_OPEN = 1;
+
+ /** BGP UPDATE message type. */
+ public static final int BGP_TYPE_UPDATE = 2;
+
+ /** BGP NOTIFICATION message type. */
+ public static final int BGP_TYPE_NOTIFICATION = 3;
+
+ /** BGP KEEPALIVE message type. */
+ public static final int BGP_TYPE_KEEPALIVE = 4;
+
+ /** BGP Header Marker field length. */
+ public static final int BGP_HEADER_MARKER_LENGTH = 16;
+
+ /** BGP Header length. */
+ public static final int BGP_HEADER_LENGTH = 19;
+
+ /** BGP message maximum length. */
+ public static final int BGP_MESSAGE_MAX_LENGTH = 4096;
+
+ /** BGP OPEN message minimum length (BGP Header included). */
+ public static final int BGP_OPEN_MIN_LENGTH = 29;
+
+ /** BGP UPDATE message minimum length (BGP Header included). */
+ public static final int BGP_UPDATE_MIN_LENGTH = 23;
+
+ /** BGP NOTIFICATION message minimum length (BGP Header included). */
+ public static final int BGP_NOTIFICATION_MIN_LENGTH = 21;
+
+ /** BGP KEEPALIVE message expected length (BGP Header included). */
+ public static final int BGP_KEEPALIVE_EXPECTED_LENGTH = 19;
+
+ /** BGP KEEPALIVE messages transmitted per Hold interval. */
+ public static final int BGP_KEEPALIVE_PER_HOLD_INTERVAL = 3;
+
+ /** BGP KEEPALIVE messages minimum Holdtime (in seconds). */
+ public static final int BGP_KEEPALIVE_MIN_HOLDTIME = 3;
+
+ /** BGP KEEPALIVE messages minimum transmission interval (in seconds). */
+ public static final int BGP_KEEPALIVE_MIN_INTERVAL = 1;
+
+ /** BGP AS 0 (zero) value. See draft-ietf-idr-as0-06.txt Internet Draft. */
+ public static final long BGP_AS_0 = 0;
+
+ /**
+ * BGP UPDATE related constants.
+ */
+ public static final class Update {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private Update() {
+ }
+
+ /**
+ * BGP UPDATE: ORIGIN related constants.
+ */
+ public static final class Origin {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private Origin() {
+ }
+
+ /** BGP UPDATE Attributes Type Code ORIGIN. */
+ public static final int TYPE = 1;
+
+ /** BGP UPDATE Attributes Type Code ORIGIN length. */
+ public static final int LENGTH = 1;
+
+ /** BGP UPDATE ORIGIN: IGP. */
+ public static final int IGP = 0;
+
+ /** BGP UPDATE ORIGIN: EGP. */
+ public static final int EGP = 1;
+
+ /** BGP UPDATE ORIGIN: INCOMPLETE. */
+ public static final int INCOMPLETE = 2;
+ }
+
+ /**
+ * BGP UPDATE: AS_PATH related constants.
+ */
+ public static final class AsPath {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private AsPath() {
+ }
+
+ /** BGP UPDATE Attributes Type Code AS_PATH. */
+ public static final int TYPE = 2;
+
+ /** BGP UPDATE AS_PATH Type: AS_SET. */
+ public static final int AS_SET = 1;
+
+ /** BGP UPDATE AS_PATH Type: AS_SEQUENCE. */
+ public static final int AS_SEQUENCE = 2;
+ }
+
+ /**
+ * BGP UPDATE: NEXT_HOP related constants.
+ */
+ public static final class NextHop {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private NextHop() {
+ }
+
+ /** BGP UPDATE Attributes Type Code NEXT_HOP. */
+ public static final int TYPE = 3;
+
+ /** BGP UPDATE Attributes Type Code NEXT_HOP length. */
+ public static final int LENGTH = 4;
+ }
+
+ /**
+ * BGP UPDATE: MULTI_EXIT_DISC related constants.
+ */
+ public static final class MultiExitDisc {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private MultiExitDisc() {
+ }
+
+ /** BGP UPDATE Attributes Type Code MULTI_EXIT_DISC. */
+ public static final int TYPE = 4;
+
+ /** BGP UPDATE Attributes Type Code MULTI_EXIT_DISC length. */
+ public static final int LENGTH = 4;
+
+ /** BGP UPDATE Attributes lowest MULTI_EXIT_DISC value. */
+ public static final int LOWEST_MULTI_EXIT_DISC = 0;
+ }
+
+ /**
+ * BGP UPDATE: LOCAL_PREF related constants.
+ */
+ public static final class LocalPref {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private LocalPref() {
+ }
+
+ /** BGP UPDATE Attributes Type Code LOCAL_PREF. */
+ public static final int TYPE = 5;
+
+ /** BGP UPDATE Attributes Type Code LOCAL_PREF length. */
+ public static final int LENGTH = 4;
+ }
+
+ /**
+ * BGP UPDATE: ATOMIC_AGGREGATE related constants.
+ */
+ public static final class AtomicAggregate {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private AtomicAggregate() {
+ }
+
+ /** BGP UPDATE Attributes Type Code ATOMIC_AGGREGATE. */
+ public static final int TYPE = 6;
+
+ /** BGP UPDATE Attributes Type Code ATOMIC_AGGREGATE length. */
+ public static final int LENGTH = 0;
+ }
+
+ /**
+ * BGP UPDATE: AGGREGATOR related constants.
+ */
+ public static final class Aggregator {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private Aggregator() {
+ }
+
+ /** BGP UPDATE Attributes Type Code AGGREGATOR. */
+ public static final int TYPE = 7;
+
+ /** BGP UPDATE Attributes Type Code AGGREGATOR length. */
+ public static final int LENGTH = 6;
+ }
+ }
+
+ /**
+ * BGP NOTIFICATION related constants.
+ */
+ public static final class Notifications {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private Notifications() {
+ }
+
+ /**
+ * BGP NOTIFICATION: Message Header Error constants.
+ */
+ public static final class MessageHeaderError {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private MessageHeaderError() {
+ }
+
+ /** Message Header Error code. */
+ public static final int ERROR_CODE = 1;
+
+ /** Message Header Error subcode: Connection Not Synchronized. */
+ public static final int CONNECTION_NOT_SYNCHRONIZED = 1;
+
+ /** Message Header Error subcode: Bad Message Length. */
+ public static final int BAD_MESSAGE_LENGTH = 2;
+
+ /** Message Header Error subcode: Bad Message Type. */
+ public static final int BAD_MESSAGE_TYPE = 3;
+ }
+
+ /**
+ * BGP NOTIFICATION: OPEN Message Error constants.
+ */
+ public static final class OpenMessageError {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private OpenMessageError() {
+ }
+
+ /** OPEN Message Error code. */
+ public static final int ERROR_CODE = 2;
+
+ /** OPEN Message Error subcode: Unsupported Version Number. */
+ public static final int UNSUPPORTED_VERSION_NUMBER = 1;
+
+ /** OPEN Message Error subcode: Bad PEER AS. */
+ public static final int BAD_PEER_AS = 2;
+
+ /** OPEN Message Error subcode: Unacceptable Hold Time. */
+ public static final int UNACCEPTABLE_HOLD_TIME = 6;
+ }
+
+ /**
+ * BGP NOTIFICATION: UPDATE Message Error constants.
+ */
+ public static final class UpdateMessageError {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private UpdateMessageError() {
+ }
+
+ /** UPDATE Message Error code. */
+ public static final int ERROR_CODE = 3;
+
+ /** UPDATE Message Error subcode: Malformed Attribute List. */
+ public static final int MALFORMED_ATTRIBUTE_LIST = 1;
+
+ /** UPDATE Message Error subcode: Unrecognized Well-known Attribute. */
+ public static final int UNRECOGNIZED_WELL_KNOWN_ATTRIBUTE = 2;
+
+ /** UPDATE Message Error subcode: Missing Well-known Attribute. */
+ public static final int MISSING_WELL_KNOWN_ATTRIBUTE = 3;
+
+ /** UPDATE Message Error subcode: Attribute Flags Error. */
+ public static final int ATTRIBUTE_FLAGS_ERROR = 4;
+
+ /** UPDATE Message Error subcode: Attribute Length Error. */
+ public static final int ATTRIBUTE_LENGTH_ERROR = 5;
+
+ /** UPDATE Message Error subcode: Invalid ORIGIN Attribute. */
+ public static final int INVALID_ORIGIN_ATTRIBUTE = 6;
+
+ /** UPDATE Message Error subcode: Invalid NEXT_HOP Attribute. */
+ public static final int INVALID_NEXT_HOP_ATTRIBUTE = 8;
+
+ /** UPDATE Message Error subcode: Optional Attribute Error. Unused. */
+ public static final int OPTIONAL_ATTRIBUTE_ERROR = 9;
+
+ /** UPDATE Message Error subcode: Invalid Network Field. */
+ public static final int INVALID_NETWORK_FIELD = 10;
+
+ /** UPDATE Message Error subcode: Malformed AS_PATH. */
+ public static final int MALFORMED_AS_PATH = 11;
+ }
+
+ /**
+ * BGP NOTIFICATION: Hold Timer Expired constants.
+ */
+ public static final class HoldTimerExpired {
+ /**
+ * Default constructor.
+ * <p>
+ * The constructor is private to prevent creating an instance of
+ * this utility class.
+ */
+ private HoldTimerExpired() {
+ }
+
+ /** Hold Timer Expired code. */
+ public static final int ERROR_CODE = 4;
+ }
+
+ /** BGP NOTIFICATION message Error subcode: Unspecific. */
+ public static final int ERROR_SUBCODE_UNSPECIFIC = 0;
+ }
+}