ceph/src/dpdk/lib/librte_mbuf/rte_mbuf_ptype.h

   1 /*-
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  34
  35 #ifndef _RTE_MBUF_PTYPE_H_
  36 #define _RTE_MBUF_PTYPE_H_
  37
  38 /**
  39  * @file
  40  * RTE Mbuf Packet Types
  41  *
  42  * This file contains declarations for features related to mbuf packet
  43  * types. The packet type gives information about the data carried by the
  44  * mbuf, and is stored in the mbuf in a 32 bits field.
  45  *
  46  * The 32 bits are divided into several fields to mark packet types. Note that
  47  * each field is indexical.
  48  * - Bit 3:0 is for L2 types.
  49  * - Bit 7:4 is for L3 or outer L3 (for tunneling case) types.
  50  * - Bit 11:8 is for L4 or outer L4 (for tunneling case) types.
  51  * - Bit 15:12 is for tunnel types.
  52  * - Bit 19:16 is for inner L2 types.
  53  * - Bit 23:20 is for inner L3 types.
  54  * - Bit 27:24 is for inner L4 types.
  55  * - Bit 31:28 is reserved.
  56  *
  57  * To be compatible with Vector PMD, RTE_PTYPE_L3_IPV4, RTE_PTYPE_L3_IPV4_EXT,
  58  * RTE_PTYPE_L3_IPV6, RTE_PTYPE_L3_IPV6_EXT, RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP
  59  * and RTE_PTYPE_L4_SCTP should be kept as below in a contiguous 7 bits.
  60  *
  61  * Note that L3 types values are selected for checking IPV4/IPV6 header from
  62  * performance point of view. Reading annotations of RTE_ETH_IS_IPV4_HDR and
  63  * RTE_ETH_IS_IPV6_HDR is needed for any future changes of L3 type values.
  64  *
  65  * Note that the packet types of the same packet recognized by different
  66  * hardware may be different, as different hardware may have different
  67  * capability of packet type recognition.
  68  *
  69  * examples:
  70  * <'ether type'=0x0800
  71  * | 'version'=4, 'protocol'=0x29
  72  * | 'version'=6, 'next header'=0x3A
  73  * | 'ICMPv6 header'>
  74  * will be recognized on i40e hardware as packet type combination of,
  75  * RTE_PTYPE_L2_ETHER |
  76  * RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
  77  * RTE_PTYPE_TUNNEL_IP |
  78  * RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN |
  79  * RTE_PTYPE_INNER_L4_ICMP.
  80  *
  81  * <'ether type'=0x86DD
  82  * | 'version'=6, 'next header'=0x2F
  83  * | 'GRE header'
  84  * | 'version'=6, 'next header'=0x11
  85  * | 'UDP header'>
  86  * will be recognized on i40e hardware as packet type combination of,
  87  * RTE_PTYPE_L2_ETHER |
  88  * RTE_PTYPE_L3_IPV6_EXT_UNKNOWN |
  89  * RTE_PTYPE_TUNNEL_GRENAT |
  90  * RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN |
  91  * RTE_PTYPE_INNER_L4_UDP.
  92  */
  93
  94 #ifdef __cplusplus
  95 extern "C" {
  96 #endif
  97
  98 /**
  99  * No packet type information.
 100  */
 101 #define RTE_PTYPE_UNKNOWN                   0x00000000
 102 /**
 103  * Ethernet packet type.
 104  * It is used for outer packet for tunneling cases.
 105  *
 106  * Packet format:
 107  * <'ether type'=[0x0800|0x86DD]>
 108  */
 109 #define RTE_PTYPE_L2_ETHER                  0x00000001
 110 /**
 111  * Ethernet packet type for time sync.
 112  *
 113  * Packet format:
 114  * <'ether type'=0x88F7>
 115  */
 116 #define RTE_PTYPE_L2_ETHER_TIMESYNC         0x00000002
 117 /**
 118  * ARP (Address Resolution Protocol) packet type.
 119  *
 120  * Packet format:
 121  * <'ether type'=0x0806>
 122  */
 123 #define RTE_PTYPE_L2_ETHER_ARP              0x00000003
 124 /**
 125  * LLDP (Link Layer Discovery Protocol) packet type.
 126  *
 127  * Packet format:
 128  * <'ether type'=0x88CC>
 129  */
 130 #define RTE_PTYPE_L2_ETHER_LLDP             0x00000004
 131 /**
 132  * NSH (Network Service Header) packet type.
 133  *
 134  * Packet format:
 135  * <'ether type'=0x894F>
 136  */
 137 #define RTE_PTYPE_L2_ETHER_NSH              0x00000005
 138 /**
 139  * VLAN packet type.
 140  *
 141  * Packet format:
 142  * <'ether type'=[0x8100]>
 143  */
 144 #define RTE_PTYPE_L2_ETHER_VLAN             0x00000006
 145 /**
 146  * QinQ packet type.
 147  *
 148  * Packet format:
 149  * <'ether type'=[0x88A8]>
 150  */
 151 #define RTE_PTYPE_L2_ETHER_QINQ             0x00000007
 152 /**
 153  * Mask of layer 2 packet types.
 154  * It is used for outer packet for tunneling cases.
 155  */
 156 #define RTE_PTYPE_L2_MASK                   0x0000000f
 157 /**
 158  * IP (Internet Protocol) version 4 packet type.
 159  * It is used for outer packet for tunneling cases, and does not contain any
 160  * header option.
 161  *
 162  * Packet format:
 163  * <'ether type'=0x0800
 164  * | 'version'=4, 'ihl'=5>
 165  */
 166 #define RTE_PTYPE_L3_IPV4                   0x00000010
 167 /**
 168  * IP (Internet Protocol) version 4 packet type.
 169  * It is used for outer packet for tunneling cases, and contains header
 170  * options.
 171  *
 172  * Packet format:
 173  * <'ether type'=0x0800
 174  * | 'version'=4, 'ihl'=[6-15], 'options'>
 175  */
 176 #define RTE_PTYPE_L3_IPV4_EXT               0x00000030
 177 /**
 178  * IP (Internet Protocol) version 6 packet type.
 179  * It is used for outer packet for tunneling cases, and does not contain any
 180  * extension header.
 181  *
 182  * Packet format:
 183  * <'ether type'=0x86DD
 184  * | 'version'=6, 'next header'=0x3B>
 185  */
 186 #define RTE_PTYPE_L3_IPV6                   0x00000040
 187 /**
 188  * IP (Internet Protocol) version 4 packet type.
 189  * It is used for outer packet for tunneling cases, and may or maynot contain
 190  * header options.
 191  *
 192  * Packet format:
 193  * <'ether type'=0x0800
 194  * | 'version'=4, 'ihl'=[5-15], <'options'>>
 195  */
 196 #define RTE_PTYPE_L3_IPV4_EXT_UNKNOWN       0x00000090
 197 /**
 198  * IP (Internet Protocol) version 6 packet type.
 199  * It is used for outer packet for tunneling cases, and contains extension
 200  * headers.
 201  *
 202  * Packet format:
 203  * <'ether type'=0x86DD
 204  * | 'version'=6, 'next header'=[0x0|0x2B|0x2C|0x32|0x33|0x3C|0x87],
 205  *   'extension headers'>
 206  */
 207 #define RTE_PTYPE_L3_IPV6_EXT               0x000000c0
 208 /**
 209  * IP (Internet Protocol) version 6 packet type.
 210  * It is used for outer packet for tunneling cases, and may or maynot contain
 211  * extension headers.
 212  *
 213  * Packet format:
 214  * <'ether type'=0x86DD
 215  * | 'version'=6, 'next header'=[0x3B|0x0|0x2B|0x2C|0x32|0x33|0x3C|0x87],
 216  *   <'extension headers'>>
 217  */
 218 #define RTE_PTYPE_L3_IPV6_EXT_UNKNOWN       0x000000e0
 219 /**
 220  * Mask of layer 3 packet types.
 221  * It is used for outer packet for tunneling cases.
 222  */
 223 #define RTE_PTYPE_L3_MASK                   0x000000f0
 224 /**
 225  * TCP (Transmission Control Protocol) packet type.
 226  * It is used for outer packet for tunneling cases.
 227  *
 228  * Packet format:
 229  * <'ether type'=0x0800
 230  * | 'version'=4, 'protocol'=6, 'MF'=0, 'frag_offset'=0>
 231  * or,
 232  * <'ether type'=0x86DD
 233  * | 'version'=6, 'next header'=6>
 234  */
 235 #define RTE_PTYPE_L4_TCP                    0x00000100
 236 /**
 237  * UDP (User Datagram Protocol) packet type.
 238  * It is used for outer packet for tunneling cases.
 239  *
 240  * Packet format:
 241  * <'ether type'=0x0800
 242  * | 'version'=4, 'protocol'=17, 'MF'=0, 'frag_offset'=0>
 243  * or,
 244  * <'ether type'=0x86DD
 245  * | 'version'=6, 'next header'=17>
 246  */
 247 #define RTE_PTYPE_L4_UDP                    0x00000200
 248 /**
 249  * Fragmented IP (Internet Protocol) packet type.
 250  * It is used for outer packet for tunneling cases.
 251  *
 252  * It refers to those packets of any IP types, which can be recognized as
 253  * fragmented. A fragmented packet cannot be recognized as any other L4 types
 254  * (RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP, RTE_PTYPE_L4_SCTP, RTE_PTYPE_L4_ICMP,
 255  * RTE_PTYPE_L4_NONFRAG).
 256  *
 257  * Packet format:
 258  * <'ether type'=0x0800
 259  * | 'version'=4, 'MF'=1>
 260  * or,
 261  * <'ether type'=0x0800
 262  * | 'version'=4, 'frag_offset'!=0>
 263  * or,
 264  * <'ether type'=0x86DD
 265  * | 'version'=6, 'next header'=44>
 266  */
 267 #define RTE_PTYPE_L4_FRAG                   0x00000300
 268 /**
 269  * SCTP (Stream Control Transmission Protocol) packet type.
 270  * It is used for outer packet for tunneling cases.
 271  *
 272  * Packet format:
 273  * <'ether type'=0x0800
 274  * | 'version'=4, 'protocol'=132, 'MF'=0, 'frag_offset'=0>
 275  * or,
 276  * <'ether type'=0x86DD
 277  * | 'version'=6, 'next header'=132>
 278  */
 279 #define RTE_PTYPE_L4_SCTP                   0x00000400
 280 /**
 281  * ICMP (Internet Control Message Protocol) packet type.
 282  * It is used for outer packet for tunneling cases.
 283  *
 284  * Packet format:
 285  * <'ether type'=0x0800
 286  * | 'version'=4, 'protocol'=1, 'MF'=0, 'frag_offset'=0>
 287  * or,
 288  * <'ether type'=0x86DD
 289  * | 'version'=6, 'next header'=1>
 290  */
 291 #define RTE_PTYPE_L4_ICMP                   0x00000500
 292 /**
 293  * Non-fragmented IP (Internet Protocol) packet type.
 294  * It is used for outer packet for tunneling cases.
 295  *
 296  * It refers to those packets of any IP types, while cannot be recognized as
 297  * any of above L4 types (RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP,
 298  * RTE_PTYPE_L4_FRAG, RTE_PTYPE_L4_SCTP, RTE_PTYPE_L4_ICMP).
 299  *
 300  * Packet format:
 301  * <'ether type'=0x0800
 302  * | 'version'=4, 'protocol'!=[6|17|132|1], 'MF'=0, 'frag_offset'=0>
 303  * or,
 304  * <'ether type'=0x86DD
 305  * | 'version'=6, 'next header'!=[6|17|44|132|1]>
 306  */
 307 #define RTE_PTYPE_L4_NONFRAG                0x00000600
 308 /**
 309  * Mask of layer 4 packet types.
 310  * It is used for outer packet for tunneling cases.
 311  */
 312 #define RTE_PTYPE_L4_MASK                   0x00000f00
 313 /**
 314  * IP (Internet Protocol) in IP (Internet Protocol) tunneling packet type.
 315  *
 316  * Packet format:
 317  * <'ether type'=0x0800
 318  * | 'version'=4, 'protocol'=[4|41]>
 319  * or,
 320  * <'ether type'=0x86DD
 321  * | 'version'=6, 'next header'=[4|41]>
 322  */
 323 #define RTE_PTYPE_TUNNEL_IP                 0x00001000
 324 /**
 325  * GRE (Generic Routing Encapsulation) tunneling packet type.
 326  *
 327  * Packet format:
 328  * <'ether type'=0x0800
 329  * | 'version'=4, 'protocol'=47>
 330  * or,
 331  * <'ether type'=0x86DD
 332  * | 'version'=6, 'next header'=47>
 333  */
 334 #define RTE_PTYPE_TUNNEL_GRE                0x00002000
 335 /**
 336  * VXLAN (Virtual eXtensible Local Area Network) tunneling packet type.
 337  *
 338  * Packet format:
 339  * <'ether type'=0x0800
 340  * | 'version'=4, 'protocol'=17
 341  * | 'destination port'=4798>
 342  * or,
 343  * <'ether type'=0x86DD
 344  * | 'version'=6, 'next header'=17
 345  * | 'destination port'=4798>
 346  */
 347 #define RTE_PTYPE_TUNNEL_VXLAN              0x00003000
 348 /**
 349  * NVGRE (Network Virtualization using Generic Routing Encapsulation) tunneling
 350  * packet type.
 351  *
 352  * Packet format:
 353  * <'ether type'=0x0800
 354  * | 'version'=4, 'protocol'=47
 355  * | 'protocol type'=0x6558>
 356  * or,
 357  * <'ether type'=0x86DD
 358  * | 'version'=6, 'next header'=47
 359  * | 'protocol type'=0x6558'>
 360  */
 361 #define RTE_PTYPE_TUNNEL_NVGRE              0x00004000
 362 /**
 363  * GENEVE (Generic Network Virtualization Encapsulation) tunneling packet type.
 364  *
 365  * Packet format:
 366  * <'ether type'=0x0800
 367  * | 'version'=4, 'protocol'=17
 368  * | 'destination port'=6081>
 369  * or,
 370  * <'ether type'=0x86DD
 371  * | 'version'=6, 'next header'=17
 372  * | 'destination port'=6081>
 373  */
 374 #define RTE_PTYPE_TUNNEL_GENEVE             0x00005000
 375 /**
 376  * Tunneling packet type of Teredo, VXLAN (Virtual eXtensible Local Area
 377  * Network) or GRE (Generic Routing Encapsulation) could be recognized as this
 378  * packet type, if they can not be recognized independently as of hardware
 379  * capability.
 380  */
 381 #define RTE_PTYPE_TUNNEL_GRENAT             0x00006000
 382 /**
 383  * Mask of tunneling packet types.
 384  */
 385 #define RTE_PTYPE_TUNNEL_MASK               0x0000f000
 386 /**
 387  * Ethernet packet type.
 388  * It is used for inner packet type only.
 389  *
 390  * Packet format (inner only):
 391  * <'ether type'=[0x800|0x86DD]>
 392  */
 393 #define RTE_PTYPE_INNER_L2_ETHER            0x00010000
 394 /**
 395  * Ethernet packet type with VLAN (Virtual Local Area Network) tag.
 396  *
 397  * Packet format (inner only):
 398  * <'ether type'=[0x800|0x86DD], vlan=[1-4095]>
 399  */
 400 #define RTE_PTYPE_INNER_L2_ETHER_VLAN       0x00020000
 401 /**
 402  * QinQ packet type.
 403  *
 404  * Packet format:
 405  * <'ether type'=[0x88A8]>
 406  */
 407 #define RTE_PTYPE_INNER_L2_ETHER_QINQ       0x00030000
 408 /**
 409  * Mask of inner layer 2 packet types.
 410  */
 411 #define RTE_PTYPE_INNER_L2_MASK             0x000f0000
 412 /**
 413  * IP (Internet Protocol) version 4 packet type.
 414  * It is used for inner packet only, and does not contain any header option.
 415  *
 416  * Packet format (inner only):
 417  * <'ether type'=0x0800
 418  * | 'version'=4, 'ihl'=5>
 419  */
 420 #define RTE_PTYPE_INNER_L3_IPV4             0x00100000
 421 /**
 422  * IP (Internet Protocol) version 4 packet type.
 423  * It is used for inner packet only, and contains header options.
 424  *
 425  * Packet format (inner only):
 426  * <'ether type'=0x0800
 427  * | 'version'=4, 'ihl'=[6-15], 'options'>
 428  */
 429 #define RTE_PTYPE_INNER_L3_IPV4_EXT         0x00200000
 430 /**
 431  * IP (Internet Protocol) version 6 packet type.
 432  * It is used for inner packet only, and does not contain any extension header.
 433  *
 434  * Packet format (inner only):
 435  * <'ether type'=0x86DD
 436  * | 'version'=6, 'next header'=0x3B>
 437  */
 438 #define RTE_PTYPE_INNER_L3_IPV6             0x00300000
 439 /**
 440  * IP (Internet Protocol) version 4 packet type.
 441  * It is used for inner packet only, and may or maynot contain header options.
 442  *
 443  * Packet format (inner only):
 444  * <'ether type'=0x0800
 445  * | 'version'=4, 'ihl'=[5-15], <'options'>>
 446  */
 447 #define RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN 0x00400000
 448 /**
 449  * IP (Internet Protocol) version 6 packet type.
 450  * It is used for inner packet only, and contains extension headers.
 451  *
 452  * Packet format (inner only):
 453  * <'ether type'=0x86DD
 454  * | 'version'=6, 'next header'=[0x0|0x2B|0x2C|0x32|0x33|0x3C|0x87],
 455  *   'extension headers'>
 456  */
 457 #define RTE_PTYPE_INNER_L3_IPV6_EXT         0x00500000
 458 /**
 459  * IP (Internet Protocol) version 6 packet type.
 460  * It is used for inner packet only, and may or maynot contain extension
 461  * headers.
 462  *
 463  * Packet format (inner only):
 464  * <'ether type'=0x86DD
 465  * | 'version'=6, 'next header'=[0x3B|0x0|0x2B|0x2C|0x32|0x33|0x3C|0x87],
 466  *   <'extension headers'>>
 467  */
 468 #define RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN 0x00600000
 469 /**
 470  * Mask of inner layer 3 packet types.
 471  */
 472 #define RTE_PTYPE_INNER_L3_MASK             0x00f00000
 473 /**
 474  * TCP (Transmission Control Protocol) packet type.
 475  * It is used for inner packet only.
 476  *
 477  * Packet format (inner only):
 478  * <'ether type'=0x0800
 479  * | 'version'=4, 'protocol'=6, 'MF'=0, 'frag_offset'=0>
 480  * or,
 481  * <'ether type'=0x86DD
 482  * | 'version'=6, 'next header'=6>
 483  */
 484 #define RTE_PTYPE_INNER_L4_TCP              0x01000000
 485 /**
 486  * UDP (User Datagram Protocol) packet type.
 487  * It is used for inner packet only.
 488  *
 489  * Packet format (inner only):
 490  * <'ether type'=0x0800
 491  * | 'version'=4, 'protocol'=17, 'MF'=0, 'frag_offset'=0>
 492  * or,
 493  * <'ether type'=0x86DD
 494  * | 'version'=6, 'next header'=17>
 495  */
 496 #define RTE_PTYPE_INNER_L4_UDP              0x02000000
 497 /**
 498  * Fragmented IP (Internet Protocol) packet type.
 499  * It is used for inner packet only, and may or maynot have layer 4 packet.
 500  *
 501  * Packet format (inner only):
 502  * <'ether type'=0x0800
 503  * | 'version'=4, 'MF'=1>
 504  * or,
 505  * <'ether type'=0x0800
 506  * | 'version'=4, 'frag_offset'!=0>
 507  * or,
 508  * <'ether type'=0x86DD
 509  * | 'version'=6, 'next header'=44>
 510  */
 511 #define RTE_PTYPE_INNER_L4_FRAG             0x03000000
 512 /**
 513  * SCTP (Stream Control Transmission Protocol) packet type.
 514  * It is used for inner packet only.
 515  *
 516  * Packet format (inner only):
 517  * <'ether type'=0x0800
 518  * | 'version'=4, 'protocol'=132, 'MF'=0, 'frag_offset'=0>
 519  * or,
 520  * <'ether type'=0x86DD
 521  * | 'version'=6, 'next header'=132>
 522  */
 523 #define RTE_PTYPE_INNER_L4_SCTP             0x04000000
 524 /**
 525  * ICMP (Internet Control Message Protocol) packet type.
 526  * It is used for inner packet only.
 527  *
 528  * Packet format (inner only):
 529  * <'ether type'=0x0800
 530  * | 'version'=4, 'protocol'=1, 'MF'=0, 'frag_offset'=0>
 531  * or,
 532  * <'ether type'=0x86DD
 533  * | 'version'=6, 'next header'=1>
 534  */
 535 #define RTE_PTYPE_INNER_L4_ICMP             0x05000000
 536 /**
 537  * Non-fragmented IP (Internet Protocol) packet type.
 538  * It is used for inner packet only, and may or maynot have other unknown layer
 539  * 4 packet types.
 540  *
 541  * Packet format (inner only):
 542  * <'ether type'=0x0800
 543  * | 'version'=4, 'protocol'!=[6|17|132|1], 'MF'=0, 'frag_offset'=0>
 544  * or,
 545  * <'ether type'=0x86DD
 546  * | 'version'=6, 'next header'!=[6|17|44|132|1]>
 547  */
 548 #define RTE_PTYPE_INNER_L4_NONFRAG          0x06000000
 549 /**
 550  * Mask of inner layer 4 packet types.
 551  */
 552 #define RTE_PTYPE_INNER_L4_MASK             0x0f000000
 553 /**
 554  * All valid layer masks.
 555  */
 556 #define RTE_PTYPE_ALL_MASK                  0x0fffffff
 557
 558 /**
 559  * Check if the (outer) L3 header is IPv4. To avoid comparing IPv4 types one by
 560  * one, bit 4 is selected to be used for IPv4 only. Then checking bit 4 can
 561  * determine if it is an IPV4 packet.
 562  */
 563 #define  RTE_ETH_IS_IPV4_HDR(ptype) ((ptype) & RTE_PTYPE_L3_IPV4)
 564
 565 /**
 566  * Check if the (outer) L3 header is IPv4. To avoid comparing IPv4 types one by
 567  * one, bit 6 is selected to be used for IPv4 only. Then checking bit 6 can
 568  * determine if it is an IPV4 packet.
 569  */
 570 #define  RTE_ETH_IS_IPV6_HDR(ptype) ((ptype) & RTE_PTYPE_L3_IPV6)
 571
 572 /* Check if it is a tunneling packet */
 573 #define RTE_ETH_IS_TUNNEL_PKT(ptype) ((ptype) &                         \
 574         (RTE_PTYPE_TUNNEL_MASK |                                        \
 575                 RTE_PTYPE_INNER_L2_MASK |                               \
 576                 RTE_PTYPE_INNER_L3_MASK |                               \
 577                 RTE_PTYPE_INNER_L4_MASK))
 578
 579 /**
 580  * Get the name of the l2 packet type
 581  *
 582  * @param ptype
 583  *   The packet type value.
 584  * @return
 585  *   A non-null string describing the packet type.
 586  */
 587 const char *rte_get_ptype_l2_name(uint32_t ptype);
 588
 589 /**
 590  * Get the name of the l3 packet type
 591  *
 592  * @param ptype
 593  *   The packet type value.
 594  * @return
 595  *   A non-null string describing the packet type.
 596  */
 597 const char *rte_get_ptype_l3_name(uint32_t ptype);
 598
 599 /**
 600  * Get the name of the l4 packet type
 601  *
 602  * @param ptype
 603  *   The packet type value.
 604  * @return
 605  *   A non-null string describing the packet type.
 606  */
 607 const char *rte_get_ptype_l4_name(uint32_t ptype);
 608
 609 /**
 610  * Get the name of the tunnel packet type
 611  *
 612  * @param ptype
 613  *   The packet type value.
 614  * @return
 615  *   A non-null string describing the packet type.
 616  */
 617 const char *rte_get_ptype_tunnel_name(uint32_t ptype);
 618
 619 /**
 620  * Get the name of the inner_l2 packet type
 621  *
 622  * @param ptype
 623  *   The packet type value.
 624  * @return
 625  *   A non-null string describing the packet type.
 626  */
 627 const char *rte_get_ptype_inner_l2_name(uint32_t ptype);
 628
 629 /**
 630  * Get the name of the inner_l3 packet type
 631  *
 632  * @param ptype
 633  *   The packet type value.
 634  * @return
 635  *   A non-null string describing the packet type.
 636  */
 637 const char *rte_get_ptype_inner_l3_name(uint32_t ptype);
 638
 639 /**
 640  * Get the name of the inner_l4 packet type
 641  *
 642  * @param ptype
 643  *   The packet type value.
 644  * @return
 645  *   A non-null string describing the packet type.
 646  */
 647 const char *rte_get_ptype_inner_l4_name(uint32_t ptype);
 648
 649 /**
 650  * Write the packet type name into the buffer
 651  *
 652  * @param ptype
 653  *   The packet type value.
 654  * @param buf
 655  *   The buffer where the string is written.
 656  * @param buflen
 657  *   The length of the buffer.
 658  * @return
 659  *   - 0 on success
 660  *   - (-1) if the buffer is too small
 661  */
 662 int rte_get_ptype_name(uint32_t ptype, char *buf, size_t buflen);
 663
 664 #ifdef __cplusplus
 665 }
 666 #endif
 667
 668 #endif /* _RTE_MBUF_PTYPE_H_ */