Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 1 | final public static int OFPFW_ALL = ((1 << 22) - 1); |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 2 | |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 3 | final public static int OFPFW_IN_PORT = 1 << 0; /* Switch input port. */ |
| 4 | final public static int OFPFW_DL_VLAN = 1 << 1; /* VLAN id. */ |
| 5 | final public static int OFPFW_DL_SRC = 1 << 2; /* Ethernet source address. */ |
| 6 | final public static int OFPFW_DL_DST = 1 << 3; /* |
| 7 | * Ethernet destination |
| 8 | * address. |
| 9 | */ |
| 10 | final public static int OFPFW_DL_TYPE = 1 << 4; /* Ethernet frame type. */ |
| 11 | final public static int OFPFW_NW_PROTO = 1 << 5; /* IP protocol. */ |
| 12 | final public static int OFPFW_TP_SRC = 1 << 6; /* TCP/UDP source port. */ |
| 13 | final public static int OFPFW_TP_DST = 1 << 7; /* TCP/UDP destination port. */ |
| 14 | |
| 15 | /* |
| 16 | * IP source address wildcard bit count. 0 is exact match, 1 ignores the |
| 17 | * LSB, 2 ignores the 2 least-significant bits, ..., 32 and higher wildcard |
| 18 | * the entire field. This is the *opposite* of the usual convention where |
| 19 | * e.g. /24 indicates that 8 bits (not 24 bits) are wildcarded. |
| 20 | */ |
| 21 | final public static int OFPFW_NW_SRC_SHIFT = 8; |
| 22 | final public static int OFPFW_NW_SRC_BITS = 6; |
| 23 | final public static int OFPFW_NW_SRC_MASK = ((1 << OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT; |
| 24 | final public static int OFPFW_NW_SRC_ALL = 32 << OFPFW_NW_SRC_SHIFT; |
| 25 | |
| 26 | /* IP destination address wildcard bit count. Same format as source. */ |
| 27 | final public static int OFPFW_NW_DST_SHIFT = 14; |
| 28 | final public static int OFPFW_NW_DST_BITS = 6; |
| 29 | final public static int OFPFW_NW_DST_MASK = ((1 << OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT; |
| 30 | final public static int OFPFW_NW_DST_ALL = 32 << OFPFW_NW_DST_SHIFT; |
| 31 | |
| 32 | final public static int OFPFW_DL_VLAN_PCP = 1 << 20; /* VLAN priority. */ |
| 33 | final public static int OFPFW_NW_TOS = 1 << 21; /* IP ToS (DSCP field, 6bits) */ |
| 34 | |
| 35 | @SuppressWarnings("unchecked") |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 36 | @Override |
| 37 | public <F extends OFValueType<F>> F get(MatchField<F> field) |
| 38 | throws UnsupportedOperationException { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 39 | if (isFullyWildcarded(field)) |
| 40 | return null; |
| 41 | if (!field.arePrerequisitesOK(this)) |
| 42 | return null; |
| 43 | |
| 44 | Object result; |
| 45 | switch (field.id) { |
| 46 | case IN_PORT: |
| 47 | result = inPort; |
| 48 | break; |
| 49 | case ETH_DST: |
| 50 | result = ethDst; |
| 51 | break; |
| 52 | case ETH_SRC: |
| 53 | result = ethSrc; |
| 54 | break; |
| 55 | case ETH_TYPE: |
| 56 | result = ethType; |
| 57 | break; |
| 58 | case VLAN_VID: |
| 59 | result = vlanVid; |
| 60 | break; |
| 61 | case VLAN_PCP: |
| 62 | result = vlanPcp; |
| 63 | break; |
| 64 | case IP_DSCP: |
| 65 | result = ipDscp; |
| 66 | break; |
| 67 | case IP_PROTO: |
| 68 | result = ipProto; |
| 69 | break; |
| 70 | case IPV4_SRC: |
| 71 | result = ipv4Dst; |
| 72 | break; |
| 73 | case IPV4_DST: |
| 74 | result = ipv4Dst; |
| 75 | break; |
| 76 | case TCP_SRC: |
| 77 | result = ipv4Src; |
| 78 | break; |
| 79 | case TCP_DST: |
| 80 | result = tcpDst; |
| 81 | break; |
| 82 | case UDP_SRC: |
| 83 | result = tcpSrc; |
| 84 | break; |
| 85 | case UDP_DST: |
| 86 | result = tcpDst; |
| 87 | break; |
| 88 | case SCTP_SRC: |
| 89 | result = tcpSrc; |
| 90 | break; |
| 91 | case SCTP_DST: |
| 92 | result = tcpDst; |
| 93 | break; |
| 94 | case ICMPV4_TYPE: |
| 95 | result = tcpSrc; |
| 96 | break; |
| 97 | case ICMPV4_CODE: |
| 98 | result = tcpDst; |
| 99 | break; |
| 100 | // NOT SUPPORTED: |
| 101 | default: |
| 102 | throw new UnsupportedOperationException("OFMatch does not support matching on field " + field.getName()); |
| 103 | } |
| 104 | return (F)result; |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 107 | @SuppressWarnings("unchecked") |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 108 | @Override |
| 109 | public <F extends OFValueType<F>> Masked<F> getMasked(MatchField<F> field) |
| 110 | throws UnsupportedOperationException { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 111 | if (!isPartiallyMasked(field)) |
| 112 | return null; |
| 113 | if (!field.arePrerequisitesOK(this)) |
| 114 | return null; |
| 115 | Object result; |
| 116 | switch (field.id) { |
| 117 | case IPV4_SRC: |
| 118 | int srcBitMask = (-1) << (32 - getIpv4SrcCidrMaskLen()); |
| 119 | result = IPv4AddressWithMask.of(ipv4Src, IPv4Address.of(srcBitMask)); |
| 120 | break; |
| 121 | case IPV4_DST: |
| 122 | int dstMaskedBits = Math.min(32, (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT); |
| 123 | int dstBitMask = (-1) << (32 - getIpv4DstCidrMaskLen()); |
| 124 | |
| 125 | result = IPv4AddressWithMask.of(ipv4Dst, IPv4Address.of(dstBitMask)); |
| 126 | break; |
| 127 | default: |
| 128 | throw new UnsupportedOperationException("OFMatch does not support masked matching on field " + field.getName()); |
| 129 | } |
| 130 | return (Masked<F>)result; |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public boolean supports(MatchField<?> field) { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 135 | switch (field.id) { |
| 136 | case IN_PORT: |
| 137 | case ETH_DST: |
| 138 | case ETH_SRC: |
| 139 | case ETH_TYPE: |
| 140 | case VLAN_VID: |
| 141 | case VLAN_PCP: |
| 142 | case IP_DSCP: |
| 143 | case IP_PROTO: |
| 144 | case IPV4_SRC: |
| 145 | case IPV4_DST: |
| 146 | case TCP_SRC: |
| 147 | case TCP_DST: |
| 148 | case UDP_SRC: |
| 149 | case UDP_DST: |
| 150 | case SCTP_SRC: |
| 151 | case SCTP_DST: |
| 152 | case ICMPV4_TYPE: |
| 153 | case ICMPV4_CODE: |
| 154 | return true; |
| 155 | default: |
| 156 | return false; |
| 157 | } |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | @Override |
| 161 | public boolean supportsMasked(MatchField<?> field) { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 162 | switch (field.id) { |
| 163 | case IPV4_SRC: |
| 164 | case IPV4_DST: |
| 165 | return true; |
| 166 | default: |
| 167 | return false; |
| 168 | } |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public boolean isExact(MatchField<?> field) { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 173 | if (!field.arePrerequisitesOK(this)) |
| 174 | return false; |
| 175 | |
| 176 | switch (field.id) { |
| 177 | case IN_PORT: |
| 178 | return (this.wildcards & OFPFW_IN_PORT) == 0; |
| 179 | case ETH_DST: |
| 180 | return (this.wildcards & OFPFW_DL_DST) == 0; |
| 181 | case ETH_SRC: |
| 182 | return (this.wildcards & OFPFW_DL_SRC) == 0; |
| 183 | case ETH_TYPE: |
| 184 | return (this.wildcards & OFPFW_DL_TYPE) == 0; |
| 185 | case VLAN_VID: |
| 186 | return (this.wildcards & OFPFW_DL_VLAN) == 0; |
| 187 | case VLAN_PCP: |
| 188 | return (this.wildcards & OFPFW_DL_VLAN_PCP) == 0; |
| 189 | case IP_DSCP: |
| 190 | return (this.wildcards & OFPFW_NW_TOS) == 0; |
| 191 | case IP_PROTO: |
| 192 | return (this.wildcards & OFPFW_NW_PROTO) == 0; |
| 193 | case IPV4_SRC: |
| 194 | return this.getIpv4SrcCidrMaskLen() >= 32; |
| 195 | case IPV4_DST: |
| 196 | return this.getIpv4DstCidrMaskLen() >= 32; |
| 197 | case TCP_SRC: |
| 198 | return (this.wildcards & OFPFW_TP_SRC) == 0; |
| 199 | case TCP_DST: |
| 200 | return (this.wildcards & OFPFW_TP_DST) == 0; |
| 201 | case UDP_SRC: |
| 202 | return (this.wildcards & OFPFW_TP_SRC) == 0; |
| 203 | case UDP_DST: |
| 204 | return (this.wildcards & OFPFW_TP_DST) == 0; |
| 205 | case SCTP_SRC: |
| 206 | return (this.wildcards & OFPFW_TP_SRC) == 0; |
| 207 | case SCTP_DST: |
| 208 | return (this.wildcards & OFPFW_TP_DST) == 0; |
| 209 | case ICMPV4_TYPE: |
| 210 | return (this.wildcards & OFPFW_TP_SRC) == 0; |
| 211 | case ICMPV4_CODE: |
| 212 | return (this.wildcards & OFPFW_TP_DST) == 0; |
| 213 | default: |
| 214 | throw new UnsupportedOperationException("OFMatch does not support matching on field " + field.getName()); |
| 215 | } |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 216 | } |
| 217 | |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 218 | /** |
| 219 | * Parse this match's wildcard fields and return the number of significant |
| 220 | * bits in the IP destination field. NOTE: this returns the number of bits |
| 221 | * that are fixed, i.e., like CIDR, not the number of bits that are free |
| 222 | * like OpenFlow encodes. |
| 223 | * |
| 224 | * @return A number between 0 (matches all IPs) and 32 (exact match) |
| 225 | */ |
| 226 | public int getIpv4DstCidrMaskLen() { |
| 227 | return Math.max(32 - ((wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT), |
| 228 | 0); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Parse this match's wildcard fields and return the number of significant |
| 233 | * bits in the IP destination field. NOTE: this returns the number of bits |
| 234 | * that are fixed, i.e., like CIDR, not the number of bits that are free |
| 235 | * like OpenFlow encodes. |
| 236 | * |
| 237 | * @return A number between 0 (matches all IPs) and 32 (exact match) |
| 238 | */ |
| 239 | public int getIpv4SrcCidrMaskLen() { |
| 240 | return Math.max(32 - ((wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT), |
| 241 | 0); |
| 242 | } |
| 243 | |
| 244 | |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 245 | @Override |
| 246 | public boolean isFullyWildcarded(MatchField<?> field) { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 247 | if (!field.arePrerequisitesOK(this)) |
| 248 | return true; |
| 249 | |
| 250 | switch (field.id) { |
| 251 | case IN_PORT: |
| 252 | return (this.wildcards & OFPFW_IN_PORT) != 0; |
| 253 | case ETH_DST: |
| 254 | return (this.wildcards & OFPFW_DL_DST) != 0; |
| 255 | case ETH_SRC: |
| 256 | return (this.wildcards & OFPFW_DL_SRC) != 0; |
| 257 | case ETH_TYPE: |
| 258 | return (this.wildcards & OFPFW_DL_TYPE) != 0; |
| 259 | case VLAN_VID: |
| 260 | return (this.wildcards & OFPFW_DL_VLAN) != 0; |
| 261 | case VLAN_PCP: |
| 262 | return (this.wildcards & OFPFW_DL_VLAN_PCP) != 0; |
| 263 | case IP_DSCP: |
| 264 | return (this.wildcards & OFPFW_NW_TOS) != 0; |
| 265 | case IP_PROTO: |
| 266 | return (this.wildcards & OFPFW_NW_PROTO) != 0; |
| 267 | case TCP_SRC: |
| 268 | return (this.wildcards & OFPFW_TP_SRC) != 0; |
| 269 | case TCP_DST: |
| 270 | return (this.wildcards & OFPFW_TP_DST) != 0; |
| 271 | case UDP_SRC: |
| 272 | return (this.wildcards & OFPFW_TP_SRC) != 0; |
| 273 | case UDP_DST: |
| 274 | return (this.wildcards & OFPFW_TP_DST) != 0; |
| 275 | case SCTP_SRC: |
| 276 | return (this.wildcards & OFPFW_TP_SRC) != 0; |
| 277 | case SCTP_DST: |
| 278 | return (this.wildcards & OFPFW_TP_DST) != 0; |
| 279 | case ICMPV4_TYPE: |
| 280 | return (this.wildcards & OFPFW_TP_SRC) != 0; |
| 281 | case ICMPV4_CODE: |
| 282 | return (this.wildcards & OFPFW_TP_DST) != 0; |
| 283 | case IPV4_SRC: |
| 284 | return this.getIpv4SrcCidrMaskLen() <= 0; |
| 285 | case IPV4_DST: |
| 286 | return this.getIpv4DstCidrMaskLen() <= 0; |
| 287 | default: |
| 288 | throw new UnsupportedOperationException("OFMatch does not support matching on field " + field.getName()); |
| 289 | } |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | @Override |
| 293 | public boolean isPartiallyMasked(MatchField<?> field) { |
Andreas Wundsam | f89f782 | 2013-09-23 14:49:24 -0700 | [diff] [blame] | 294 | if (!field.arePrerequisitesOK(this)) |
| 295 | return false; |
| 296 | |
| 297 | switch (field.id) { |
| 298 | case IPV4_SRC: |
| 299 | int srcCidrLen = getIpv4SrcCidrMaskLen(); |
| 300 | return srcCidrLen > 0 && srcCidrLen < 32; |
| 301 | case IPV4_DST: |
| 302 | int dstCidrLen = getIpv4SrcCidrMaskLen(); |
| 303 | return dstCidrLen > 0 && dstCidrLen < 32; |
| 304 | default: |
| 305 | throw new UnsupportedOperationException("OFMatch does not support masked matching on field " + field.getName()); |
| 306 | } |
Andreas Wundsam | bc679f7 | 2013-08-01 22:13:09 -0700 | [diff] [blame] | 307 | } |