Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.bgpio.types; |
| 17 | |
| 18 | import java.util.LinkedList; |
| 19 | import java.util.List; |
| 20 | |
| 21 | import org.jboss.netty.buffer.ChannelBuffer; |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 22 | import org.onosproject.bgpio.exceptions.BgpParseException; |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 23 | import org.onosproject.bgpio.types.attr.BgpAttrNodeFlagBitTlv; |
| 24 | import org.onosproject.bgpio.types.attr.BgpAttrNodeIsIsAreaId; |
| 25 | import org.onosproject.bgpio.types.attr.BgpAttrNodeMultiTopologyId; |
| 26 | import org.onosproject.bgpio.types.attr.BgpAttrNodeName; |
| 27 | import org.onosproject.bgpio.types.attr.BgpAttrOpaqueNode; |
| 28 | import org.onosproject.bgpio.types.attr.BgpAttrRouterIdV4; |
| 29 | import org.onosproject.bgpio.types.attr.BgpAttrRouterIdV6; |
| 30 | import org.onosproject.bgpio.types.attr.BgpLinkAttrIgpMetric; |
| 31 | import org.onosproject.bgpio.types.attr.BgpLinkAttrIsIsAdminstGrp; |
| 32 | import org.onosproject.bgpio.types.attr.BgpLinkAttrMplsProtocolMask; |
| 33 | import org.onosproject.bgpio.types.attr.BgpLinkAttrMaxLinkBandwidth; |
| 34 | import org.onosproject.bgpio.types.attr.BgpLinkAttrName; |
| 35 | import org.onosproject.bgpio.types.attr.BgpLinkAttrOpaqLnkAttrib; |
| 36 | import org.onosproject.bgpio.types.attr.BgpLinkAttrProtectionType; |
| 37 | import org.onosproject.bgpio.types.attr.BgpLinkAttrSrlg; |
| 38 | import org.onosproject.bgpio.types.attr.BgpLinkAttrTeDefaultMetric; |
| 39 | import org.onosproject.bgpio.types.attr.BgpLinkAttrUnRsrvdLinkBandwidth; |
| 40 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrExtRouteTag; |
| 41 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrIgpFlags; |
| 42 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrMetric; |
| 43 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrOspfFwdAddr; |
| 44 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrOpaqueData; |
| 45 | import org.onosproject.bgpio.types.attr.BgpPrefixAttrRouteTag; |
| 46 | import org.onosproject.bgpio.util.Validation; |
| 47 | import org.slf4j.Logger; |
| 48 | import org.slf4j.LoggerFactory; |
| 49 | |
| 50 | import com.google.common.base.MoreObjects; |
| 51 | |
| 52 | /** |
| 53 | * Implements BGP Link state attribute. |
| 54 | */ |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 55 | public class LinkStateAttributes implements BgpValueType { |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 56 | |
| 57 | protected static final Logger log = LoggerFactory |
| 58 | .getLogger(LinkStateAttributes.class); |
| 59 | |
| 60 | /* Node Attributes */ |
| 61 | public static final short ATTR_NODE_MT_TOPOLOGY_ID = 263; |
| 62 | public static final short ATTR_NODE_FLAG_BITS = 1024; |
| 63 | public static final short ATTR_NODE_OPAQUE_NODE = 1025; |
| 64 | public static final short ATTR_NODE_NAME = 1026; |
| 65 | public static final short ATTR_NODE_ISIS_AREA_ID = 1027; |
| 66 | public static final short ATTR_NODE_IPV4_LOCAL_ROUTER_ID = 1028; |
| 67 | public static final short ATTR_NODE_IPV6_LOCAL_ROUTER_ID = 1029; |
| 68 | |
| 69 | /* Link Attributes */ |
| 70 | public static final short ATTR_LINK_IPV4_REMOTE_ROUTER_ID = 1030; |
| 71 | public static final short ATTR_LINK_IPV6_REMOTE_ROUTER_ID = 1031; |
| 72 | public static final short ATTR_LINK_ADMINISTRATIVE_GRPS = 1088; |
| 73 | public static final short ATTR_LINK_MAX_BANDWIDTH = 1089; |
| 74 | public static final short ATTR_LINK_MAX_RES_BANDWIDTH = 1090; |
| 75 | public static final short ATTR_LINK_UNRES_BANDWIDTH = 1091; |
| 76 | public static final short ATTR_LINK_TE_DEFAULT_METRIC = 1092; |
| 77 | public static final short ATTR_LINK_PROTECTION_TYPE = 1093; |
| 78 | public static final short ATTR_LINK_MPLS_PROTOCOL_MASK = 1094; |
| 79 | public static final short ATTR_LINK_IGP_METRIC = 1095; |
| 80 | public static final short ATTR_LINK_SHR_RISK_GRP = 1096; |
| 81 | public static final short ATTR_LINK_OPAQUE_ATTR = 1097; |
| 82 | public static final short ATTR_LINK_NAME_ATTR = 1098; |
| 83 | |
| 84 | /* Prefix Attributes */ |
| 85 | public static final short ATTR_PREFIX_IGP_FLAG = 1152; |
| 86 | public static final short ATTR_PREFIX_ROUTE_TAG = 1153; |
| 87 | public static final short ATTR_PREFIX_EXTENDED_TAG = 1154; |
| 88 | public static final short ATTR_PREFIX_METRIC = 1155; |
| 89 | public static final short ATTR_PREFIX_OSPF_FWD_ADDR = 1156; |
| 90 | public static final short ATTR_PREFIX_OPAQUE_ATTR = 1157; |
| 91 | |
Priyanka B | 0ab34b9 | 2015-12-03 21:13:52 +0530 | [diff] [blame] | 92 | public static final byte LINKSTATE_ATTRIB_TYPE = 29; |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 93 | public static final byte TYPE_AND_LEN = 4; |
| 94 | private boolean isLinkStateAttribute = false; |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 95 | private List<BgpValueType> linkStateAttribList; |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 96 | |
| 97 | /** |
| 98 | * Constructor to reset parameters. |
| 99 | */ |
| 100 | LinkStateAttributes() { |
| 101 | this.linkStateAttribList = null; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Constructor to initialize parameters. |
| 106 | * |
| 107 | * @param linkStateAttribList Linked list of Link, Node and Prefix TLVs |
| 108 | */ |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 109 | LinkStateAttributes(List<BgpValueType> linkStateAttribList) { |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 110 | this.linkStateAttribList = linkStateAttribList; |
| 111 | this.isLinkStateAttribute = true; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Returns linked list of Link, Node and Prefix TLVs. |
| 116 | * |
| 117 | * @return linked list of Link, Node and Prefix TLVs |
| 118 | */ |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 119 | public List<BgpValueType> linkStateAttributes() { |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 120 | return this.linkStateAttribList; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Returns if the Link state attributes are set or not. |
| 125 | * |
| 126 | * @return a boolean value to to check if the LS attributes are set or not |
| 127 | */ |
| 128 | public boolean isLinkStateAttributeSet() { |
| 129 | return this.isLinkStateAttribute; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Reads the Link state attribute TLVs. |
| 134 | * |
| 135 | * @param cb ChannelBuffer |
| 136 | * @return constructor of LinkStateAttributes |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 137 | * @throws BgpParseException while parsing link state attributes |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 138 | */ |
| 139 | public static LinkStateAttributes read(ChannelBuffer cb) |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 140 | throws BgpParseException { |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 141 | |
Priyanka B | 0ab34b9 | 2015-12-03 21:13:52 +0530 | [diff] [blame] | 142 | ChannelBuffer tempBuf = cb.copy(); |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 143 | Validation parseFlags = Validation.parseAttributeHeader(cb); |
| 144 | int len = parseFlags.isShort() ? parseFlags.getLength() + TYPE_AND_LEN |
| 145 | : parseFlags.getLength() + 3; |
| 146 | |
| 147 | ChannelBuffer data = tempBuf.readBytes(len); |
Priyanka B | 0ab34b9 | 2015-12-03 21:13:52 +0530 | [diff] [blame] | 148 | if (!parseFlags.getFirstBit() && parseFlags.getSecondBit() |
| 149 | && parseFlags.getThirdBit()) { |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 150 | throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| 151 | BgpErrorType.ATTRIBUTE_FLAGS_ERROR, |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 152 | data); |
| 153 | } |
| 154 | |
| 155 | if (cb.readableBytes() < parseFlags.getLength()) { |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 156 | Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| 157 | BgpErrorType.BAD_MESSAGE_LENGTH, |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 158 | parseFlags.getLength()); |
| 159 | } |
| 160 | |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 161 | BgpValueType bgpLSAttrib = null; |
| 162 | LinkedList<BgpValueType> linkStateAttribList; |
| 163 | linkStateAttribList = new LinkedList<BgpValueType>(); |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 164 | ChannelBuffer tempCb = cb.readBytes(parseFlags.getLength()); |
| 165 | while (tempCb.readableBytes() > 0) { |
| 166 | short tlvCodePoint = tempCb.readShort(); |
| 167 | switch (tlvCodePoint) { |
| 168 | |
| 169 | /********* 7 NODE ATTRIBUTES ********/ |
| 170 | case ATTR_NODE_MT_TOPOLOGY_ID: /* 263 Multi-Topology Identifier*/ |
| 171 | bgpLSAttrib = BgpAttrNodeMultiTopologyId.read(tempCb); |
| 172 | break; |
| 173 | |
| 174 | case ATTR_NODE_FLAG_BITS: /*Node flag bit TLV*/ |
| 175 | bgpLSAttrib = BgpAttrNodeFlagBitTlv.read(tempCb); |
| 176 | break; |
| 177 | |
| 178 | case ATTR_NODE_OPAQUE_NODE: /*Opaque Node Attribute*/ |
| 179 | bgpLSAttrib = BgpAttrOpaqueNode.read(tempCb); |
| 180 | break; |
| 181 | |
| 182 | case ATTR_NODE_NAME: /*Node Name*/ |
| 183 | bgpLSAttrib = BgpAttrNodeName.read(tempCb); |
| 184 | break; |
| 185 | |
| 186 | case ATTR_NODE_ISIS_AREA_ID: /*IS-IS Area Identifier TLV*/ |
| 187 | bgpLSAttrib = BgpAttrNodeIsIsAreaId.read(tempCb); |
| 188 | break; |
| 189 | |
| 190 | case ATTR_NODE_IPV4_LOCAL_ROUTER_ID: /*IPv4 Router-ID of Local Node*/ |
| 191 | bgpLSAttrib = BgpAttrRouterIdV4.read(tempCb, (short) ATTR_NODE_IPV4_LOCAL_ROUTER_ID); |
| 192 | break; |
| 193 | |
| 194 | case ATTR_NODE_IPV6_LOCAL_ROUTER_ID: /*IPv6 Router-ID of Local Node*/ |
| 195 | bgpLSAttrib = BgpAttrRouterIdV6.read(tempCb, (short) ATTR_NODE_IPV6_LOCAL_ROUTER_ID); |
| 196 | break; |
| 197 | |
| 198 | /********* 15 LINK ATTRIBUTES ********/ |
| 199 | |
| 200 | case ATTR_LINK_IPV4_REMOTE_ROUTER_ID: /*IPv4 Router-ID of Remote Node*/ |
| 201 | bgpLSAttrib = BgpAttrRouterIdV4.read(tempCb, (short) 1030); |
| 202 | break; |
| 203 | |
| 204 | case ATTR_LINK_IPV6_REMOTE_ROUTER_ID: /*IPv6 Router-ID of Remote Node*/ |
| 205 | bgpLSAttrib = BgpAttrRouterIdV6.read(tempCb, (short) 1031); |
| 206 | break; |
| 207 | |
| 208 | case ATTR_LINK_ADMINISTRATIVE_GRPS: /*ISIS Administrative group STLV 3*/ |
| 209 | bgpLSAttrib = BgpLinkAttrIsIsAdminstGrp.read(tempCb); |
| 210 | break; |
| 211 | |
| 212 | case ATTR_LINK_MAX_BANDWIDTH: /*Maximum link bandwidth*/ |
| 213 | bgpLSAttrib = BgpLinkAttrMaxLinkBandwidth.read(tempCb, |
| 214 | (short) 1089); |
| 215 | break; |
| 216 | |
| 217 | case ATTR_LINK_MAX_RES_BANDWIDTH: /* Maximum Reservable link bandwidth */ |
| 218 | bgpLSAttrib = BgpLinkAttrMaxLinkBandwidth.read(tempCb, |
| 219 | (short) 1090); |
| 220 | break; |
| 221 | |
| 222 | case ATTR_LINK_UNRES_BANDWIDTH: /* UnReserved link bandwidth */ |
| 223 | bgpLSAttrib = BgpLinkAttrUnRsrvdLinkBandwidth |
| 224 | .read(tempCb, (short) 1091); |
| 225 | break; |
| 226 | |
| 227 | case ATTR_LINK_TE_DEFAULT_METRIC: /* TE Default Metric */ |
| 228 | bgpLSAttrib = BgpLinkAttrTeDefaultMetric.read(tempCb); |
| 229 | break; |
| 230 | |
| 231 | case ATTR_LINK_PROTECTION_TYPE:/* Link Protection type */ |
| 232 | bgpLSAttrib = BgpLinkAttrProtectionType.read(tempCb); |
| 233 | break; |
| 234 | |
| 235 | case ATTR_LINK_MPLS_PROTOCOL_MASK: /* MPLS Protocol Mask */ |
| 236 | bgpLSAttrib = BgpLinkAttrMplsProtocolMask.read(tempCb); // 2 |
| 237 | break; |
| 238 | |
| 239 | case ATTR_LINK_IGP_METRIC: /* IGP Metric */ |
| 240 | bgpLSAttrib = BgpLinkAttrIgpMetric.read(tempCb); // 2 |
| 241 | break; |
| 242 | |
| 243 | case ATTR_LINK_SHR_RISK_GRP: /* Shared Risk Link Group */ |
| 244 | bgpLSAttrib = BgpLinkAttrSrlg.read(tempCb); // 3 |
| 245 | break; |
| 246 | |
| 247 | case ATTR_LINK_OPAQUE_ATTR: /* Opaque link attribute */ |
| 248 | bgpLSAttrib = BgpLinkAttrOpaqLnkAttrib.read(tempCb); |
| 249 | break; |
| 250 | |
| 251 | case ATTR_LINK_NAME_ATTR: /* Link Name attribute */ |
| 252 | bgpLSAttrib = BgpLinkAttrName.read(tempCb); |
| 253 | break; |
| 254 | |
| 255 | /********* 6 PREFIX ATTRIBUTES ********/ |
| 256 | |
| 257 | case ATTR_PREFIX_IGP_FLAG: /* IGP Flags */ |
| 258 | bgpLSAttrib = BgpPrefixAttrIgpFlags.read(tempCb); |
| 259 | break; |
| 260 | |
| 261 | case ATTR_PREFIX_ROUTE_TAG: /* Route Tag */ |
| 262 | bgpLSAttrib = BgpPrefixAttrRouteTag.read(tempCb); |
| 263 | break; |
| 264 | |
| 265 | case ATTR_PREFIX_EXTENDED_TAG: /* Extended Tag */ |
| 266 | bgpLSAttrib = BgpPrefixAttrExtRouteTag.read(tempCb); |
| 267 | break; |
| 268 | |
| 269 | case ATTR_PREFIX_METRIC: /* Prefix Metric */ |
| 270 | bgpLSAttrib = BgpPrefixAttrMetric.read(tempCb); |
| 271 | break; |
| 272 | |
| 273 | case ATTR_PREFIX_OSPF_FWD_ADDR: /* OSPF Forwarding Address */ |
| 274 | bgpLSAttrib = BgpPrefixAttrOspfFwdAddr.read(tempCb); |
| 275 | break; |
| 276 | |
| 277 | case ATTR_PREFIX_OPAQUE_ATTR: /* Opaque Prefix Attribute */ |
| 278 | bgpLSAttrib = BgpPrefixAttrOpaqueData.read(tempCb); |
| 279 | break; |
| 280 | |
| 281 | default: |
Shashikanth VH | 5dd8dbe | 2015-11-26 13:22:18 +0530 | [diff] [blame] | 282 | throw new BgpParseException( |
| 283 | "The Bgp-LS Attribute is not supported : " |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 284 | + tlvCodePoint); |
| 285 | } |
| 286 | |
| 287 | linkStateAttribList.add(bgpLSAttrib); |
| 288 | } |
| 289 | return new LinkStateAttributes(linkStateAttribList); |
| 290 | } |
| 291 | |
| 292 | @Override |
| 293 | public short getType() { |
| 294 | return LINKSTATE_ATTRIB_TYPE; |
| 295 | } |
| 296 | |
| 297 | @Override |
| 298 | public int write(ChannelBuffer cb) { |
| 299 | // TODO This will be implemented in the next version |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | @Override |
| 304 | public String toString() { |
| 305 | return MoreObjects.toStringHelper(getClass()).omitNullValues() |
| 306 | .add("linkStateAttribList", linkStateAttribList).toString(); |
| 307 | } |
Priyanka B | 0204073 | 2015-11-29 11:30:29 +0530 | [diff] [blame] | 308 | |
| 309 | @Override |
| 310 | public int compareTo(Object o) { |
| 311 | // TODO Auto-generated method stub |
| 312 | return 0; |
| 313 | } |
Thejaswi N K | 68d434a | 2015-11-20 19:59:20 +0530 | [diff] [blame] | 314 | } |