app/test-pmd/cmdline_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stddef.h>
   7 #include <stdint.h>
   8 #include <stdio.h>
   9 #include <inttypes.h>
  10 #include <errno.h>
  11 #include <ctype.h>
  12 #include <string.h>
  13 #include <arpa/inet.h>
  14 #include <sys/socket.h>
  15
  16 #include <rte_common.h>
  17 #include <rte_eth_ctrl.h>
  18 #include <rte_ethdev.h>
  19 #include <rte_byteorder.h>
  20 #include <cmdline_parse.h>
  21 #include <cmdline_parse_etheraddr.h>
  22 #include <rte_flow.h>
  23
  24 #include "testpmd.h"
  25
  26 /** Parser token indices. */
  27 enum index {
  28         /* Special tokens. */
  29         ZERO = 0,
  30         END,
  31
  32         /* Common tokens. */
  33         INTEGER,
  34         UNSIGNED,
  35         PREFIX,
  36         BOOLEAN,
  37         STRING,
  38         MAC_ADDR,
  39         IPV4_ADDR,
  40         IPV6_ADDR,
  41         RULE_ID,
  42         PORT_ID,
  43         GROUP_ID,
  44         PRIORITY_LEVEL,
  45
  46         /* Top-level command. */
  47         FLOW,
  48
  49         /* Sub-level commands. */
  50         VALIDATE,
  51         CREATE,
  52         DESTROY,
  53         FLUSH,
  54         QUERY,
  55         LIST,
  56         ISOLATE,
  57
  58         /* Destroy arguments. */
  59         DESTROY_RULE,
  60
  61         /* Query arguments. */
  62         QUERY_ACTION,
  63
  64         /* List arguments. */
  65         LIST_GROUP,
  66
  67         /* Validate/create arguments. */
  68         GROUP,
  69         PRIORITY,
  70         INGRESS,
  71         EGRESS,
  72
  73         /* Validate/create pattern. */
  74         PATTERN,
  75         ITEM_PARAM_IS,
  76         ITEM_PARAM_SPEC,
  77         ITEM_PARAM_LAST,
  78         ITEM_PARAM_MASK,
  79         ITEM_PARAM_PREFIX,
  80         ITEM_NEXT,
  81         ITEM_END,
  82         ITEM_VOID,
  83         ITEM_INVERT,
  84         ITEM_ANY,
  85         ITEM_ANY_NUM,
  86         ITEM_PF,
  87         ITEM_VF,
  88         ITEM_VF_ID,
  89         ITEM_PORT,
  90         ITEM_PORT_INDEX,
  91         ITEM_RAW,
  92         ITEM_RAW_RELATIVE,
  93         ITEM_RAW_SEARCH,
  94         ITEM_RAW_OFFSET,
  95         ITEM_RAW_LIMIT,
  96         ITEM_RAW_PATTERN,
  97         ITEM_ETH,
  98         ITEM_ETH_DST,
  99         ITEM_ETH_SRC,
 100         ITEM_ETH_TYPE,
 101         ITEM_VLAN,
 102         ITEM_VLAN_TPID,
 103         ITEM_VLAN_TCI,
 104         ITEM_VLAN_PCP,
 105         ITEM_VLAN_DEI,
 106         ITEM_VLAN_VID,
 107         ITEM_IPV4,
 108         ITEM_IPV4_TOS,
 109         ITEM_IPV4_TTL,
 110         ITEM_IPV4_PROTO,
 111         ITEM_IPV4_SRC,
 112         ITEM_IPV4_DST,
 113         ITEM_IPV6,
 114         ITEM_IPV6_TC,
 115         ITEM_IPV6_FLOW,
 116         ITEM_IPV6_PROTO,
 117         ITEM_IPV6_HOP,
 118         ITEM_IPV6_SRC,
 119         ITEM_IPV6_DST,
 120         ITEM_ICMP,
 121         ITEM_ICMP_TYPE,
 122         ITEM_ICMP_CODE,
 123         ITEM_UDP,
 124         ITEM_UDP_SRC,
 125         ITEM_UDP_DST,
 126         ITEM_TCP,
 127         ITEM_TCP_SRC,
 128         ITEM_TCP_DST,
 129         ITEM_TCP_FLAGS,
 130         ITEM_SCTP,
 131         ITEM_SCTP_SRC,
 132         ITEM_SCTP_DST,
 133         ITEM_SCTP_TAG,
 134         ITEM_SCTP_CKSUM,
 135         ITEM_VXLAN,
 136         ITEM_VXLAN_VNI,
 137         ITEM_E_TAG,
 138         ITEM_E_TAG_GRP_ECID_B,
 139         ITEM_NVGRE,
 140         ITEM_NVGRE_TNI,
 141         ITEM_MPLS,
 142         ITEM_MPLS_LABEL,
 143         ITEM_GRE,
 144         ITEM_GRE_PROTO,
 145         ITEM_FUZZY,
 146         ITEM_FUZZY_THRESH,
 147         ITEM_GTP,
 148         ITEM_GTP_TEID,
 149         ITEM_GTPC,
 150         ITEM_GTPU,
 151         ITEM_GENEVE,
 152         ITEM_GENEVE_VNI,
 153         ITEM_GENEVE_PROTO,
 154
 155         /* Validate/create actions. */
 156         ACTIONS,
 157         ACTION_NEXT,
 158         ACTION_END,
 159         ACTION_VOID,
 160         ACTION_PASSTHRU,
 161         ACTION_MARK,
 162         ACTION_MARK_ID,
 163         ACTION_FLAG,
 164         ACTION_QUEUE,
 165         ACTION_QUEUE_INDEX,
 166         ACTION_DROP,
 167         ACTION_COUNT,
 168         ACTION_RSS,
 169         ACTION_RSS_FUNC,
 170         ACTION_RSS_LEVEL,
 171         ACTION_RSS_FUNC_DEFAULT,
 172         ACTION_RSS_FUNC_TOEPLITZ,
 173         ACTION_RSS_FUNC_SIMPLE_XOR,
 174         ACTION_RSS_TYPES,
 175         ACTION_RSS_TYPE,
 176         ACTION_RSS_KEY,
 177         ACTION_RSS_KEY_LEN,
 178         ACTION_RSS_QUEUES,
 179         ACTION_RSS_QUEUE,
 180         ACTION_PF,
 181         ACTION_VF,
 182         ACTION_VF_ORIGINAL,
 183         ACTION_VF_ID,
 184         ACTION_METER,
 185         ACTION_METER_ID,
 186 };
 187
 188 /** Maximum size for pattern in struct rte_flow_item_raw. */
 189 #define ITEM_RAW_PATTERN_SIZE 40
 190
 191 /** Storage size for struct rte_flow_item_raw including pattern. */
 192 #define ITEM_RAW_SIZE \
 193         (sizeof(struct rte_flow_item_raw) + ITEM_RAW_PATTERN_SIZE)
 194
 195 /** Maximum number of queue indices in struct rte_flow_action_rss. */
 196 #define ACTION_RSS_QUEUE_NUM 32
 197
 198 /** Storage for struct rte_flow_action_rss including external data. */
 199 struct action_rss_data {
 200         struct rte_flow_action_rss conf;
 201         uint8_t key[RSS_HASH_KEY_LENGTH];
 202         uint16_t queue[ACTION_RSS_QUEUE_NUM];
 203 };
 204
 205 /** Maximum number of subsequent tokens and arguments on the stack. */
 206 #define CTX_STACK_SIZE 16
 207
 208 /** Parser context. */
 209 struct context {
 210         /** Stack of subsequent token lists to process. */
 211         const enum index *next[CTX_STACK_SIZE];
 212         /** Arguments for stacked tokens. */
 213         const void *args[CTX_STACK_SIZE];
 214         enum index curr; /**< Current token index. */
 215         enum index prev; /**< Index of the last token seen. */
 216         int next_num; /**< Number of entries in next[]. */
 217         int args_num; /**< Number of entries in args[]. */
 218         uint32_t eol:1; /**< EOL has been detected. */
 219         uint32_t last:1; /**< No more arguments. */
 220         portid_t port; /**< Current port ID (for completions). */
 221         uint32_t objdata; /**< Object-specific data. */
 222         void *object; /**< Address of current object for relative offsets. */
 223         void *objmask; /**< Object a full mask must be written to. */
 224 };
 225
 226 /** Token argument. */
 227 struct arg {
 228         uint32_t hton:1; /**< Use network byte ordering. */
 229         uint32_t sign:1; /**< Value is signed. */
 230         uint32_t bounded:1; /**< Value is bounded. */
 231         uintmax_t min; /**< Minimum value if bounded. */
 232         uintmax_t max; /**< Maximum value if bounded. */
 233         uint32_t offset; /**< Relative offset from ctx->object. */
 234         uint32_t size; /**< Field size. */
 235         const uint8_t *mask; /**< Bit-mask to use instead of offset/size. */
 236 };
 237
 238 /** Parser token definition. */
 239 struct token {
 240         /** Type displayed during completion (defaults to "TOKEN"). */
 241         const char *type;
 242         /** Help displayed during completion (defaults to token name). */
 243         const char *help;
 244         /** Private data used by parser functions. */
 245         const void *priv;
 246         /**
 247          * Lists of subsequent tokens to push on the stack. Each call to the
 248          * parser consumes the last entry of that stack.
 249          */
 250         const enum index *const *next;
 251         /** Arguments stack for subsequent tokens that need them. */
 252         const struct arg *const *args;
 253         /**
 254          * Token-processing callback, returns -1 in case of error, the
 255          * length of the matched string otherwise. If NULL, attempts to
 256          * match the token name.
 257          *
 258          * If buf is not NULL, the result should be stored in it according
 259          * to context. An error is returned if not large enough.
 260          */
 261         int (*call)(struct context *ctx, const struct token *token,
 262                     const char *str, unsigned int len,
 263                     void *buf, unsigned int size);
 264         /**
 265          * Callback that provides possible values for this token, used for
 266          * completion. Returns -1 in case of error, the number of possible
 267          * values otherwise. If NULL, the token name is used.
 268          *
 269          * If buf is not NULL, entry index ent is written to buf and the
 270          * full length of the entry is returned (same behavior as
 271          * snprintf()).
 272          */
 273         int (*comp)(struct context *ctx, const struct token *token,
 274                     unsigned int ent, char *buf, unsigned int size);
 275         /** Mandatory token name, no default value. */
 276         const char *name;
 277 };
 278
 279 /** Static initializer for the next field. */
 280 #define NEXT(...) (const enum index *const []){ __VA_ARGS__, NULL, }
 281
 282 /** Static initializer for a NEXT() entry. */
 283 #define NEXT_ENTRY(...) (const enum index []){ __VA_ARGS__, ZERO, }
 284
 285 /** Static initializer for the args field. */
 286 #define ARGS(...) (const struct arg *const []){ __VA_ARGS__, NULL, }
 287
 288 /** Static initializer for ARGS() to target a field. */
 289 #define ARGS_ENTRY(s, f) \
 290         (&(const struct arg){ \
 291                 .offset = offsetof(s, f), \
 292                 .size = sizeof(((s *)0)->f), \
 293         })
 294
 295 /** Static initializer for ARGS() to target a bit-field. */
 296 #define ARGS_ENTRY_BF(s, f, b) \
 297         (&(const struct arg){ \
 298                 .size = sizeof(s), \
 299                 .mask = (const void *)&(const s){ .f = (1 << (b)) - 1 }, \
 300         })
 301
 302 /** Static initializer for ARGS() to target an arbitrary bit-mask. */
 303 #define ARGS_ENTRY_MASK(s, f, m) \
 304         (&(const struct arg){ \
 305                 .offset = offsetof(s, f), \
 306                 .size = sizeof(((s *)0)->f), \
 307                 .mask = (const void *)(m), \
 308         })
 309
 310 /** Same as ARGS_ENTRY_MASK() using network byte ordering for the value. */
 311 #define ARGS_ENTRY_MASK_HTON(s, f, m) \
 312         (&(const struct arg){ \
 313                 .hton = 1, \
 314                 .offset = offsetof(s, f), \
 315                 .size = sizeof(((s *)0)->f), \
 316                 .mask = (const void *)(m), \
 317         })
 318
 319 /** Static initializer for ARGS() to target a pointer. */
 320 #define ARGS_ENTRY_PTR(s, f) \
 321         (&(const struct arg){ \
 322                 .size = sizeof(*((s *)0)->f), \
 323         })
 324
 325 /** Static initializer for ARGS() with arbitrary offset and size. */
 326 #define ARGS_ENTRY_ARB(o, s) \
 327         (&(const struct arg){ \
 328                 .offset = (o), \
 329                 .size = (s), \
 330         })
 331
 332 /** Same as ARGS_ENTRY_ARB() with bounded values. */
 333 #define ARGS_ENTRY_ARB_BOUNDED(o, s, i, a) \
 334         (&(const struct arg){ \
 335                 .bounded = 1, \
 336                 .min = (i), \
 337                 .max = (a), \
 338                 .offset = (o), \
 339                 .size = (s), \
 340         })
 341
 342 /** Same as ARGS_ENTRY() using network byte ordering. */
 343 #define ARGS_ENTRY_HTON(s, f) \
 344         (&(const struct arg){ \
 345                 .hton = 1, \
 346                 .offset = offsetof(s, f), \
 347                 .size = sizeof(((s *)0)->f), \
 348         })
 349
 350 /** Parser output buffer layout expected by cmd_flow_parsed(). */
 351 struct buffer {
 352         enum index command; /**< Flow command. */
 353         portid_t port; /**< Affected port ID. */
 354         union {
 355                 struct {
 356                         struct rte_flow_attr attr;
 357                         struct rte_flow_item *pattern;
 358                         struct rte_flow_action *actions;
 359                         uint32_t pattern_n;
 360                         uint32_t actions_n;
 361                         uint8_t *data;
 362                 } vc; /**< Validate/create arguments. */
 363                 struct {
 364                         uint32_t *rule;
 365                         uint32_t rule_n;
 366                 } destroy; /**< Destroy arguments. */
 367                 struct {
 368                         uint32_t rule;
 369                         enum rte_flow_action_type action;
 370                 } query; /**< Query arguments. */
 371                 struct {
 372                         uint32_t *group;
 373                         uint32_t group_n;
 374                 } list; /**< List arguments. */
 375                 struct {
 376                         int set;
 377                 } isolate; /**< Isolated mode arguments. */
 378         } args; /**< Command arguments. */
 379 };
 380
 381 /** Private data for pattern items. */
 382 struct parse_item_priv {
 383         enum rte_flow_item_type type; /**< Item type. */
 384         uint32_t size; /**< Size of item specification structure. */
 385 };
 386
 387 #define PRIV_ITEM(t, s) \
 388         (&(const struct parse_item_priv){ \
 389                 .type = RTE_FLOW_ITEM_TYPE_ ## t, \
 390                 .size = s, \
 391         })
 392
 393 /** Private data for actions. */
 394 struct parse_action_priv {
 395         enum rte_flow_action_type type; /**< Action type. */
 396         uint32_t size; /**< Size of action configuration structure. */
 397 };
 398
 399 #define PRIV_ACTION(t, s) \
 400         (&(const struct parse_action_priv){ \
 401                 .type = RTE_FLOW_ACTION_TYPE_ ## t, \
 402                 .size = s, \
 403         })
 404
 405 static const enum index next_vc_attr[] = {
 406         GROUP,
 407         PRIORITY,
 408         INGRESS,
 409         EGRESS,
 410         PATTERN,
 411         ZERO,
 412 };
 413
 414 static const enum index next_destroy_attr[] = {
 415         DESTROY_RULE,
 416         END,
 417         ZERO,
 418 };
 419
 420 static const enum index next_list_attr[] = {
 421         LIST_GROUP,
 422         END,
 423         ZERO,
 424 };
 425
 426 static const enum index item_param[] = {
 427         ITEM_PARAM_IS,
 428         ITEM_PARAM_SPEC,
 429         ITEM_PARAM_LAST,
 430         ITEM_PARAM_MASK,
 431         ITEM_PARAM_PREFIX,
 432         ZERO,
 433 };
 434
 435 static const enum index next_item[] = {
 436         ITEM_END,
 437         ITEM_VOID,
 438         ITEM_INVERT,
 439         ITEM_ANY,
 440         ITEM_PF,
 441         ITEM_VF,
 442         ITEM_PORT,
 443         ITEM_RAW,
 444         ITEM_ETH,
 445         ITEM_VLAN,
 446         ITEM_IPV4,
 447         ITEM_IPV6,
 448         ITEM_ICMP,
 449         ITEM_UDP,
 450         ITEM_TCP,
 451         ITEM_SCTP,
 452         ITEM_VXLAN,
 453         ITEM_E_TAG,
 454         ITEM_NVGRE,
 455         ITEM_MPLS,
 456         ITEM_GRE,
 457         ITEM_FUZZY,
 458         ITEM_GTP,
 459         ITEM_GTPC,
 460         ITEM_GTPU,
 461         ITEM_GENEVE,
 462         ZERO,
 463 };
 464
 465 static const enum index item_fuzzy[] = {
 466         ITEM_FUZZY_THRESH,
 467         ITEM_NEXT,
 468         ZERO,
 469 };
 470
 471 static const enum index item_any[] = {
 472         ITEM_ANY_NUM,
 473         ITEM_NEXT,
 474         ZERO,
 475 };
 476
 477 static const enum index item_vf[] = {
 478         ITEM_VF_ID,
 479         ITEM_NEXT,
 480         ZERO,
 481 };
 482
 483 static const enum index item_port[] = {
 484         ITEM_PORT_INDEX,
 485         ITEM_NEXT,
 486         ZERO,
 487 };
 488
 489 static const enum index item_raw[] = {
 490         ITEM_RAW_RELATIVE,
 491         ITEM_RAW_SEARCH,
 492         ITEM_RAW_OFFSET,
 493         ITEM_RAW_LIMIT,
 494         ITEM_RAW_PATTERN,
 495         ITEM_NEXT,
 496         ZERO,
 497 };
 498
 499 static const enum index item_eth[] = {
 500         ITEM_ETH_DST,
 501         ITEM_ETH_SRC,
 502         ITEM_ETH_TYPE,
 503         ITEM_NEXT,
 504         ZERO,
 505 };
 506
 507 static const enum index item_vlan[] = {
 508         ITEM_VLAN_TPID,
 509         ITEM_VLAN_TCI,
 510         ITEM_VLAN_PCP,
 511         ITEM_VLAN_DEI,
 512         ITEM_VLAN_VID,
 513         ITEM_NEXT,
 514         ZERO,
 515 };
 516
 517 static const enum index item_ipv4[] = {
 518         ITEM_IPV4_TOS,
 519         ITEM_IPV4_TTL,
 520         ITEM_IPV4_PROTO,
 521         ITEM_IPV4_SRC,
 522         ITEM_IPV4_DST,
 523         ITEM_NEXT,
 524         ZERO,
 525 };
 526
 527 static const enum index item_ipv6[] = {
 528         ITEM_IPV6_TC,
 529         ITEM_IPV6_FLOW,
 530         ITEM_IPV6_PROTO,
 531         ITEM_IPV6_HOP,
 532         ITEM_IPV6_SRC,
 533         ITEM_IPV6_DST,
 534         ITEM_NEXT,
 535         ZERO,
 536 };
 537
 538 static const enum index item_icmp[] = {
 539         ITEM_ICMP_TYPE,
 540         ITEM_ICMP_CODE,
 541         ITEM_NEXT,
 542         ZERO,
 543 };
 544
 545 static const enum index item_udp[] = {
 546         ITEM_UDP_SRC,
 547         ITEM_UDP_DST,
 548         ITEM_NEXT,
 549         ZERO,
 550 };
 551
 552 static const enum index item_tcp[] = {
 553         ITEM_TCP_SRC,
 554         ITEM_TCP_DST,
 555         ITEM_TCP_FLAGS,
 556         ITEM_NEXT,
 557         ZERO,
 558 };
 559
 560 static const enum index item_sctp[] = {
 561         ITEM_SCTP_SRC,
 562         ITEM_SCTP_DST,
 563         ITEM_SCTP_TAG,
 564         ITEM_SCTP_CKSUM,
 565         ITEM_NEXT,
 566         ZERO,
 567 };
 568
 569 static const enum index item_vxlan[] = {
 570         ITEM_VXLAN_VNI,
 571         ITEM_NEXT,
 572         ZERO,
 573 };
 574
 575 static const enum index item_e_tag[] = {
 576         ITEM_E_TAG_GRP_ECID_B,
 577         ITEM_NEXT,
 578         ZERO,
 579 };
 580
 581 static const enum index item_nvgre[] = {
 582         ITEM_NVGRE_TNI,
 583         ITEM_NEXT,
 584         ZERO,
 585 };
 586
 587 static const enum index item_mpls[] = {
 588         ITEM_MPLS_LABEL,
 589         ITEM_NEXT,
 590         ZERO,
 591 };
 592
 593 static const enum index item_gre[] = {
 594         ITEM_GRE_PROTO,
 595         ITEM_NEXT,
 596         ZERO,
 597 };
 598
 599 static const enum index item_gtp[] = {
 600         ITEM_GTP_TEID,
 601         ITEM_NEXT,
 602         ZERO,
 603 };
 604
 605 static const enum index item_geneve[] = {
 606         ITEM_GENEVE_VNI,
 607         ITEM_GENEVE_PROTO,
 608         ITEM_NEXT,
 609         ZERO,
 610 };
 611
 612 static const enum index next_action[] = {
 613         ACTION_END,
 614         ACTION_VOID,
 615         ACTION_PASSTHRU,
 616         ACTION_MARK,
 617         ACTION_FLAG,
 618         ACTION_QUEUE,
 619         ACTION_DROP,
 620         ACTION_COUNT,
 621         ACTION_RSS,
 622         ACTION_PF,
 623         ACTION_VF,
 624         ACTION_METER,
 625         ZERO,
 626 };
 627
 628 static const enum index action_mark[] = {
 629         ACTION_MARK_ID,
 630         ACTION_NEXT,
 631         ZERO,
 632 };
 633
 634 static const enum index action_queue[] = {
 635         ACTION_QUEUE_INDEX,
 636         ACTION_NEXT,
 637         ZERO,
 638 };
 639
 640 static const enum index action_rss[] = {
 641         ACTION_RSS_FUNC,
 642         ACTION_RSS_LEVEL,
 643         ACTION_RSS_TYPES,
 644         ACTION_RSS_KEY,
 645         ACTION_RSS_KEY_LEN,
 646         ACTION_RSS_QUEUES,
 647         ACTION_NEXT,
 648         ZERO,
 649 };
 650
 651 static const enum index action_vf[] = {
 652         ACTION_VF_ORIGINAL,
 653         ACTION_VF_ID,
 654         ACTION_NEXT,
 655         ZERO,
 656 };
 657
 658 static const enum index action_meter[] = {
 659         ACTION_METER_ID,
 660         ACTION_NEXT,
 661         ZERO,
 662 };
 663
 664 static int parse_init(struct context *, const struct token *,
 665                       const char *, unsigned int,
 666                       void *, unsigned int);
 667 static int parse_vc(struct context *, const struct token *,
 668                     const char *, unsigned int,
 669                     void *, unsigned int);
 670 static int parse_vc_spec(struct context *, const struct token *,
 671                          const char *, unsigned int, void *, unsigned int);
 672 static int parse_vc_conf(struct context *, const struct token *,
 673                          const char *, unsigned int, void *, unsigned int);
 674 static int parse_vc_action_rss(struct context *, const struct token *,
 675                                const char *, unsigned int, void *,
 676                                unsigned int);
 677 static int parse_vc_action_rss_func(struct context *, const struct token *,
 678                                     const char *, unsigned int, void *,
 679                                     unsigned int);
 680 static int parse_vc_action_rss_type(struct context *, const struct token *,
 681                                     const char *, unsigned int, void *,
 682                                     unsigned int);
 683 static int parse_vc_action_rss_queue(struct context *, const struct token *,
 684                                      const char *, unsigned int, void *,
 685                                      unsigned int);
 686 static int parse_destroy(struct context *, const struct token *,
 687                          const char *, unsigned int,
 688                          void *, unsigned int);
 689 static int parse_flush(struct context *, const struct token *,
 690                        const char *, unsigned int,
 691                        void *, unsigned int);
 692 static int parse_query(struct context *, const struct token *,
 693                        const char *, unsigned int,
 694                        void *, unsigned int);
 695 static int parse_action(struct context *, const struct token *,
 696                         const char *, unsigned int,
 697                         void *, unsigned int);
 698 static int parse_list(struct context *, const struct token *,
 699                       const char *, unsigned int,
 700                       void *, unsigned int);
 701 static int parse_isolate(struct context *, const struct token *,
 702                          const char *, unsigned int,
 703                          void *, unsigned int);
 704 static int parse_int(struct context *, const struct token *,
 705                      const char *, unsigned int,
 706                      void *, unsigned int);
 707 static int parse_prefix(struct context *, const struct token *,
 708                         const char *, unsigned int,
 709                         void *, unsigned int);
 710 static int parse_boolean(struct context *, const struct token *,
 711                          const char *, unsigned int,
 712                          void *, unsigned int);
 713 static int parse_string(struct context *, const struct token *,
 714                         const char *, unsigned int,
 715                         void *, unsigned int);
 716 static int parse_mac_addr(struct context *, const struct token *,
 717                           const char *, unsigned int,
 718                           void *, unsigned int);
 719 static int parse_ipv4_addr(struct context *, const struct token *,
 720                            const char *, unsigned int,
 721                            void *, unsigned int);
 722 static int parse_ipv6_addr(struct context *, const struct token *,
 723                            const char *, unsigned int,
 724                            void *, unsigned int);
 725 static int parse_port(struct context *, const struct token *,
 726                       const char *, unsigned int,
 727                       void *, unsigned int);
 728 static int comp_none(struct context *, const struct token *,
 729                      unsigned int, char *, unsigned int);
 730 static int comp_boolean(struct context *, const struct token *,
 731                         unsigned int, char *, unsigned int);
 732 static int comp_action(struct context *, const struct token *,
 733                        unsigned int, char *, unsigned int);
 734 static int comp_port(struct context *, const struct token *,
 735                      unsigned int, char *, unsigned int);
 736 static int comp_rule_id(struct context *, const struct token *,
 737                         unsigned int, char *, unsigned int);
 738 static int comp_vc_action_rss_type(struct context *, const struct token *,
 739                                    unsigned int, char *, unsigned int);
 740 static int comp_vc_action_rss_queue(struct context *, const struct token *,
 741                                     unsigned int, char *, unsigned int);
 742
 743 /** Token definitions. */
 744 static const struct token token_list[] = {
 745         /* Special tokens. */
 746         [ZERO] = {
 747                 .name = "ZERO",
 748                 .help = "null entry, abused as the entry point",
 749                 .next = NEXT(NEXT_ENTRY(FLOW)),
 750         },
 751         [END] = {
 752                 .name = "",
 753                 .type = "RETURN",
 754                 .help = "command may end here",
 755         },
 756         /* Common tokens. */
 757         [INTEGER] = {
 758                 .name = "{int}",
 759                 .type = "INTEGER",
 760                 .help = "integer value",
 761                 .call = parse_int,
 762                 .comp = comp_none,
 763         },
 764         [UNSIGNED] = {
 765                 .name = "{unsigned}",
 766                 .type = "UNSIGNED",
 767                 .help = "unsigned integer value",
 768                 .call = parse_int,
 769                 .comp = comp_none,
 770         },
 771         [PREFIX] = {
 772                 .name = "{prefix}",
 773                 .type = "PREFIX",
 774                 .help = "prefix length for bit-mask",
 775                 .call = parse_prefix,
 776                 .comp = comp_none,
 777         },
 778         [BOOLEAN] = {
 779                 .name = "{boolean}",
 780                 .type = "BOOLEAN",
 781                 .help = "any boolean value",
 782                 .call = parse_boolean,
 783                 .comp = comp_boolean,
 784         },
 785         [STRING] = {
 786                 .name = "{string}",
 787                 .type = "STRING",
 788                 .help = "fixed string",
 789                 .call = parse_string,
 790                 .comp = comp_none,
 791         },
 792         [MAC_ADDR] = {
 793                 .name = "{MAC address}",
 794                 .type = "MAC-48",
 795                 .help = "standard MAC address notation",
 796                 .call = parse_mac_addr,
 797                 .comp = comp_none,
 798         },
 799         [IPV4_ADDR] = {
 800                 .name = "{IPv4 address}",
 801                 .type = "IPV4 ADDRESS",
 802                 .help = "standard IPv4 address notation",
 803                 .call = parse_ipv4_addr,
 804                 .comp = comp_none,
 805         },
 806         [IPV6_ADDR] = {
 807                 .name = "{IPv6 address}",
 808                 .type = "IPV6 ADDRESS",
 809                 .help = "standard IPv6 address notation",
 810                 .call = parse_ipv6_addr,
 811                 .comp = comp_none,
 812         },
 813         [RULE_ID] = {
 814                 .name = "{rule id}",
 815                 .type = "RULE ID",
 816                 .help = "rule identifier",
 817                 .call = parse_int,
 818                 .comp = comp_rule_id,
 819         },
 820         [PORT_ID] = {
 821                 .name = "{port_id}",
 822                 .type = "PORT ID",
 823                 .help = "port identifier",
 824                 .call = parse_port,
 825                 .comp = comp_port,
 826         },
 827         [GROUP_ID] = {
 828                 .name = "{group_id}",
 829                 .type = "GROUP ID",
 830                 .help = "group identifier",
 831                 .call = parse_int,
 832                 .comp = comp_none,
 833         },
 834         [PRIORITY_LEVEL] = {
 835                 .name = "{level}",
 836                 .type = "PRIORITY",
 837                 .help = "priority level",
 838                 .call = parse_int,
 839                 .comp = comp_none,
 840         },
 841         /* Top-level command. */
 842         [FLOW] = {
 843                 .name = "flow",
 844                 .type = "{command} {port_id} [{arg} [...]]",
 845                 .help = "manage ingress/egress flow rules",
 846                 .next = NEXT(NEXT_ENTRY
 847                              (VALIDATE,
 848                               CREATE,
 849                               DESTROY,
 850                               FLUSH,
 851                               LIST,
 852                               QUERY,
 853                               ISOLATE)),
 854                 .call = parse_init,
 855         },
 856         /* Sub-level commands. */
 857         [VALIDATE] = {
 858                 .name = "validate",
 859                 .help = "check whether a flow rule can be created",
 860                 .next = NEXT(next_vc_attr, NEXT_ENTRY(PORT_ID)),
 861                 .args = ARGS(ARGS_ENTRY(struct buffer, port)),
 862                 .call = parse_vc,
 863         },
 864         [CREATE] = {
 865                 .name = "create",
 866                 .help = "create a flow rule",
 867                 .next = NEXT(next_vc_attr, NEXT_ENTRY(PORT_ID)),
 868                 .args = ARGS(ARGS_ENTRY(struct buffer, port)),
 869                 .call = parse_vc,
 870         },
 871         [DESTROY] = {
 872                 .name = "destroy",
 873                 .help = "destroy specific flow rules",
 874                 .next = NEXT(NEXT_ENTRY(DESTROY_RULE), NEXT_ENTRY(PORT_ID)),
 875                 .args = ARGS(ARGS_ENTRY(struct buffer, port)),
 876                 .call = parse_destroy,
 877         },
 878         [FLUSH] = {
 879                 .name = "flush",
 880                 .help = "destroy all flow rules",
 881                 .next = NEXT(NEXT_ENTRY(PORT_ID)),
 882                 .args = ARGS(ARGS_ENTRY(struct buffer, port)),
 883                 .call = parse_flush,
 884         },
 885         [QUERY] = {
 886                 .name = "query",
 887                 .help = "query an existing flow rule",
 888                 .next = NEXT(NEXT_ENTRY(QUERY_ACTION),
 889                              NEXT_ENTRY(RULE_ID),
 890                              NEXT_ENTRY(PORT_ID)),
 891                 .args = ARGS(ARGS_ENTRY(struct buffer, args.query.action),
 892                              ARGS_ENTRY(struct buffer, args.query.rule),
 893                              ARGS_ENTRY(struct buffer, port)),
 894                 .call = parse_query,
 895         },
 896         [LIST] = {
 897                 .name = "list",
 898                 .help = "list existing flow rules",
 899                 .next = NEXT(next_list_attr, NEXT_ENTRY(PORT_ID)),
 900                 .args = ARGS(ARGS_ENTRY(struct buffer, port)),
 901                 .call = parse_list,
 902         },
 903         [ISOLATE] = {
 904                 .name = "isolate",
 905                 .help = "restrict ingress traffic to the defined flow rules",
 906                 .next = NEXT(NEXT_ENTRY(BOOLEAN),
 907                              NEXT_ENTRY(PORT_ID)),
 908                 .args = ARGS(ARGS_ENTRY(struct buffer, args.isolate.set),
 909                              ARGS_ENTRY(struct buffer, port)),
 910                 .call = parse_isolate,
 911         },
 912         /* Destroy arguments. */
 913         [DESTROY_RULE] = {
 914                 .name = "rule",
 915                 .help = "specify a rule identifier",
 916                 .next = NEXT(next_destroy_attr, NEXT_ENTRY(RULE_ID)),
 917                 .args = ARGS(ARGS_ENTRY_PTR(struct buffer, args.destroy.rule)),
 918                 .call = parse_destroy,
 919         },
 920         /* Query arguments. */
 921         [QUERY_ACTION] = {
 922                 .name = "{action}",
 923                 .type = "ACTION",
 924                 .help = "action to query, must be part of the rule",
 925                 .call = parse_action,
 926                 .comp = comp_action,
 927         },
 928         /* List arguments. */
 929         [LIST_GROUP] = {
 930                 .name = "group",
 931                 .help = "specify a group",
 932                 .next = NEXT(next_list_attr, NEXT_ENTRY(GROUP_ID)),
 933                 .args = ARGS(ARGS_ENTRY_PTR(struct buffer, args.list.group)),
 934                 .call = parse_list,
 935         },
 936         /* Validate/create attributes. */
 937         [GROUP] = {
 938                 .name = "group",
 939                 .help = "specify a group",
 940                 .next = NEXT(next_vc_attr, NEXT_ENTRY(GROUP_ID)),
 941                 .args = ARGS(ARGS_ENTRY(struct rte_flow_attr, group)),
 942                 .call = parse_vc,
 943         },
 944         [PRIORITY] = {
 945                 .name = "priority",
 946                 .help = "specify a priority level",
 947                 .next = NEXT(next_vc_attr, NEXT_ENTRY(PRIORITY_LEVEL)),
 948                 .args = ARGS(ARGS_ENTRY(struct rte_flow_attr, priority)),
 949                 .call = parse_vc,
 950         },
 951         [INGRESS] = {
 952                 .name = "ingress",
 953                 .help = "affect rule to ingress",
 954                 .next = NEXT(next_vc_attr),
 955                 .call = parse_vc,
 956         },
 957         [EGRESS] = {
 958                 .name = "egress",
 959                 .help = "affect rule to egress",
 960                 .next = NEXT(next_vc_attr),
 961                 .call = parse_vc,
 962         },
 963         /* Validate/create pattern. */
 964         [PATTERN] = {
 965                 .name = "pattern",
 966                 .help = "submit a list of pattern items",
 967                 .next = NEXT(next_item),
 968                 .call = parse_vc,
 969         },
 970         [ITEM_PARAM_IS] = {
 971                 .name = "is",
 972                 .help = "match value perfectly (with full bit-mask)",
 973                 .call = parse_vc_spec,
 974         },
 975         [ITEM_PARAM_SPEC] = {
 976                 .name = "spec",
 977                 .help = "match value according to configured bit-mask",
 978                 .call = parse_vc_spec,
 979         },
 980         [ITEM_PARAM_LAST] = {
 981                 .name = "last",
 982                 .help = "specify upper bound to establish a range",
 983                 .call = parse_vc_spec,
 984         },
 985         [ITEM_PARAM_MASK] = {
 986                 .name = "mask",
 987                 .help = "specify bit-mask with relevant bits set to one",
 988                 .call = parse_vc_spec,
 989         },
 990         [ITEM_PARAM_PREFIX] = {
 991                 .name = "prefix",
 992                 .help = "generate bit-mask from a prefix length",
 993                 .call = parse_vc_spec,
 994         },
 995         [ITEM_NEXT] = {
 996                 .name = "/",
 997                 .help = "specify next pattern item",
 998                 .next = NEXT(next_item),
 999         },
1000         [ITEM_END] = {
1001                 .name = "end",
1002                 .help = "end list of pattern items",
1003                 .priv = PRIV_ITEM(END, 0),
1004                 .next = NEXT(NEXT_ENTRY(ACTIONS)),
1005                 .call = parse_vc,
1006         },
1007         [ITEM_VOID] = {
1008                 .name = "void",
1009                 .help = "no-op pattern item",
1010                 .priv = PRIV_ITEM(VOID, 0),
1011                 .next = NEXT(NEXT_ENTRY(ITEM_NEXT)),
1012                 .call = parse_vc,
1013         },
1014         [ITEM_INVERT] = {
1015                 .name = "invert",
1016                 .help = "perform actions when pattern does not match",
1017                 .priv = PRIV_ITEM(INVERT, 0),
1018                 .next = NEXT(NEXT_ENTRY(ITEM_NEXT)),
1019                 .call = parse_vc,
1020         },
1021         [ITEM_ANY] = {
1022                 .name = "any",
1023                 .help = "match any protocol for the current layer",
1024                 .priv = PRIV_ITEM(ANY, sizeof(struct rte_flow_item_any)),
1025                 .next = NEXT(item_any),
1026                 .call = parse_vc,
1027         },
1028         [ITEM_ANY_NUM] = {
1029                 .name = "num",
1030                 .help = "number of layers covered",
1031                 .next = NEXT(item_any, NEXT_ENTRY(UNSIGNED), item_param),
1032                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_any, num)),
1033         },
1034         [ITEM_PF] = {
1035                 .name = "pf",
1036                 .help = "match packets addressed to the physical function",
1037                 .priv = PRIV_ITEM(PF, 0),
1038                 .next = NEXT(NEXT_ENTRY(ITEM_NEXT)),
1039                 .call = parse_vc,
1040         },
1041         [ITEM_VF] = {
1042                 .name = "vf",
1043                 .help = "match packets addressed to a virtual function ID",
1044                 .priv = PRIV_ITEM(VF, sizeof(struct rte_flow_item_vf)),
1045                 .next = NEXT(item_vf),
1046                 .call = parse_vc,
1047         },
1048         [ITEM_VF_ID] = {
1049                 .name = "id",
1050                 .help = "destination VF ID",
1051                 .next = NEXT(item_vf, NEXT_ENTRY(UNSIGNED), item_param),
1052                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_vf, id)),
1053         },
1054         [ITEM_PORT] = {
1055                 .name = "port",
1056                 .help = "device-specific physical port index to use",
1057                 .priv = PRIV_ITEM(PORT, sizeof(struct rte_flow_item_port)),
1058                 .next = NEXT(item_port),
1059                 .call = parse_vc,
1060         },
1061         [ITEM_PORT_INDEX] = {
1062                 .name = "index",
1063                 .help = "physical port index",
1064                 .next = NEXT(item_port, NEXT_ENTRY(UNSIGNED), item_param),
1065                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_port, index)),
1066         },
1067         [ITEM_RAW] = {
1068                 .name = "raw",
1069                 .help = "match an arbitrary byte string",
1070                 .priv = PRIV_ITEM(RAW, ITEM_RAW_SIZE),
1071                 .next = NEXT(item_raw),
1072                 .call = parse_vc,
1073         },
1074         [ITEM_RAW_RELATIVE] = {
1075                 .name = "relative",
1076                 .help = "look for pattern after the previous item",
1077                 .next = NEXT(item_raw, NEXT_ENTRY(BOOLEAN), item_param),
1078                 .args = ARGS(ARGS_ENTRY_BF(struct rte_flow_item_raw,
1079                                            relative, 1)),
1080         },
1081         [ITEM_RAW_SEARCH] = {
1082                 .name = "search",
1083                 .help = "search pattern from offset (see also limit)",
1084                 .next = NEXT(item_raw, NEXT_ENTRY(BOOLEAN), item_param),
1085                 .args = ARGS(ARGS_ENTRY_BF(struct rte_flow_item_raw,
1086                                            search, 1)),
1087         },
1088         [ITEM_RAW_OFFSET] = {
1089                 .name = "offset",
1090                 .help = "absolute or relative offset for pattern",
1091                 .next = NEXT(item_raw, NEXT_ENTRY(INTEGER), item_param),
1092                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, offset)),
1093         },
1094         [ITEM_RAW_LIMIT] = {
1095                 .name = "limit",
1096                 .help = "search area limit for start of pattern",
1097                 .next = NEXT(item_raw, NEXT_ENTRY(UNSIGNED), item_param),
1098                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, limit)),
1099         },
1100         [ITEM_RAW_PATTERN] = {
1101                 .name = "pattern",
1102                 .help = "byte string to look for",
1103                 .next = NEXT(item_raw,
1104                              NEXT_ENTRY(STRING),
1105                              NEXT_ENTRY(ITEM_PARAM_IS,
1106                                         ITEM_PARAM_SPEC,
1107                                         ITEM_PARAM_MASK)),
1108                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, pattern),
1109                              ARGS_ENTRY(struct rte_flow_item_raw, length),
1110                              ARGS_ENTRY_ARB(sizeof(struct rte_flow_item_raw),
1111                                             ITEM_RAW_PATTERN_SIZE)),
1112         },
1113         [ITEM_ETH] = {
1114                 .name = "eth",
1115                 .help = "match Ethernet header",
1116                 .priv = PRIV_ITEM(ETH, sizeof(struct rte_flow_item_eth)),
1117                 .next = NEXT(item_eth),
1118                 .call = parse_vc,
1119         },
1120         [ITEM_ETH_DST] = {
1121                 .name = "dst",
1122                 .help = "destination MAC",
1123                 .next = NEXT(item_eth, NEXT_ENTRY(MAC_ADDR), item_param),
1124                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_eth, dst)),
1125         },
1126         [ITEM_ETH_SRC] = {
1127                 .name = "src",
1128                 .help = "source MAC",
1129                 .next = NEXT(item_eth, NEXT_ENTRY(MAC_ADDR), item_param),
1130                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_eth, src)),
1131         },
1132         [ITEM_ETH_TYPE] = {
1133                 .name = "type",
1134                 .help = "EtherType",
1135                 .next = NEXT(item_eth, NEXT_ENTRY(UNSIGNED), item_param),
1136                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_eth, type)),
1137         },
1138         [ITEM_VLAN] = {
1139                 .name = "vlan",
1140                 .help = "match 802.1Q/ad VLAN tag",
1141                 .priv = PRIV_ITEM(VLAN, sizeof(struct rte_flow_item_vlan)),
1142                 .next = NEXT(item_vlan),
1143                 .call = parse_vc,
1144         },
1145         [ITEM_VLAN_TPID] = {
1146                 .name = "tpid",
1147                 .help = "tag protocol identifier",
1148                 .next = NEXT(item_vlan, NEXT_ENTRY(UNSIGNED), item_param),
1149                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_vlan, tpid)),
1150         },
1151         [ITEM_VLAN_TCI] = {
1152                 .name = "tci",
1153                 .help = "tag control information",
1154                 .next = NEXT(item_vlan, NEXT_ENTRY(UNSIGNED), item_param),
1155                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_vlan, tci)),
1156         },
1157         [ITEM_VLAN_PCP] = {
1158                 .name = "pcp",
1159                 .help = "priority code point",
1160                 .next = NEXT(item_vlan, NEXT_ENTRY(UNSIGNED), item_param),
1161                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_vlan,
1162                                                   tci, "\xe0\x00")),
1163         },
1164         [ITEM_VLAN_DEI] = {
1165                 .name = "dei",
1166                 .help = "drop eligible indicator",
1167                 .next = NEXT(item_vlan, NEXT_ENTRY(UNSIGNED), item_param),
1168                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_vlan,
1169                                                   tci, "\x10\x00")),
1170         },
1171         [ITEM_VLAN_VID] = {
1172                 .name = "vid",
1173                 .help = "VLAN identifier",
1174                 .next = NEXT(item_vlan, NEXT_ENTRY(UNSIGNED), item_param),
1175                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_vlan,
1176                                                   tci, "\x0f\xff")),
1177         },
1178         [ITEM_IPV4] = {
1179                 .name = "ipv4",
1180                 .help = "match IPv4 header",
1181                 .priv = PRIV_ITEM(IPV4, sizeof(struct rte_flow_item_ipv4)),
1182                 .next = NEXT(item_ipv4),
1183                 .call = parse_vc,
1184         },
1185         [ITEM_IPV4_TOS] = {
1186                 .name = "tos",
1187                 .help = "type of service",
1188                 .next = NEXT(item_ipv4, NEXT_ENTRY(UNSIGNED), item_param),
1189                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
1190                                              hdr.type_of_service)),
1191         },
1192         [ITEM_IPV4_TTL] = {
1193                 .name = "ttl",
1194                 .help = "time to live",
1195                 .next = NEXT(item_ipv4, NEXT_ENTRY(UNSIGNED), item_param),
1196                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
1197                                              hdr.time_to_live)),
1198         },
1199         [ITEM_IPV4_PROTO] = {
1200                 .name = "proto",
1201                 .help = "next protocol ID",
1202                 .next = NEXT(item_ipv4, NEXT_ENTRY(UNSIGNED), item_param),
1203                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
1204                                              hdr.next_proto_id)),
1205         },
1206         [ITEM_IPV4_SRC] = {
1207                 .name = "src",
1208                 .help = "source address",
1209                 .next = NEXT(item_ipv4, NEXT_ENTRY(IPV4_ADDR), item_param),
1210                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
1211                                              hdr.src_addr)),
1212         },
1213         [ITEM_IPV4_DST] = {
1214                 .name = "dst",
1215                 .help = "destination address",
1216                 .next = NEXT(item_ipv4, NEXT_ENTRY(IPV4_ADDR), item_param),
1217                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
1218                                              hdr.dst_addr)),
1219         },
1220         [ITEM_IPV6] = {
1221                 .name = "ipv6",
1222                 .help = "match IPv6 header",
1223                 .priv = PRIV_ITEM(IPV6, sizeof(struct rte_flow_item_ipv6)),
1224                 .next = NEXT(item_ipv6),
1225                 .call = parse_vc,
1226         },
1227         [ITEM_IPV6_TC] = {
1228                 .name = "tc",
1229                 .help = "traffic class",
1230                 .next = NEXT(item_ipv6, NEXT_ENTRY(UNSIGNED), item_param),
1231                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_ipv6,
1232                                                   hdr.vtc_flow,
1233                                                   "\x0f\xf0\x00\x00")),
1234         },
1235         [ITEM_IPV6_FLOW] = {
1236                 .name = "flow",
1237                 .help = "flow label",
1238                 .next = NEXT(item_ipv6, NEXT_ENTRY(UNSIGNED), item_param),
1239                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_ipv6,
1240                                                   hdr.vtc_flow,
1241                                                   "\x00\x0f\xff\xff")),
1242         },
1243         [ITEM_IPV6_PROTO] = {
1244                 .name = "proto",
1245                 .help = "protocol (next header)",
1246                 .next = NEXT(item_ipv6, NEXT_ENTRY(UNSIGNED), item_param),
1247                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv6,
1248                                              hdr.proto)),
1249         },
1250         [ITEM_IPV6_HOP] = {
1251                 .name = "hop",
1252                 .help = "hop limit",
1253                 .next = NEXT(item_ipv6, NEXT_ENTRY(UNSIGNED), item_param),
1254                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv6,
1255                                              hdr.hop_limits)),
1256         },
1257         [ITEM_IPV6_SRC] = {
1258                 .name = "src",
1259                 .help = "source address",
1260                 .next = NEXT(item_ipv6, NEXT_ENTRY(IPV6_ADDR), item_param),
1261                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv6,
1262                                              hdr.src_addr)),
1263         },
1264         [ITEM_IPV6_DST] = {
1265                 .name = "dst",
1266                 .help = "destination address",
1267                 .next = NEXT(item_ipv6, NEXT_ENTRY(IPV6_ADDR), item_param),
1268                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv6,
1269                                              hdr.dst_addr)),
1270         },
1271         [ITEM_ICMP] = {
1272                 .name = "icmp",
1273                 .help = "match ICMP header",
1274                 .priv = PRIV_ITEM(ICMP, sizeof(struct rte_flow_item_icmp)),
1275                 .next = NEXT(item_icmp),
1276                 .call = parse_vc,
1277         },
1278         [ITEM_ICMP_TYPE] = {
1279                 .name = "type",
1280                 .help = "ICMP packet type",
1281                 .next = NEXT(item_icmp, NEXT_ENTRY(UNSIGNED), item_param),
1282                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_icmp,
1283                                              hdr.icmp_type)),
1284         },
1285         [ITEM_ICMP_CODE] = {
1286                 .name = "code",
1287                 .help = "ICMP packet code",
1288                 .next = NEXT(item_icmp, NEXT_ENTRY(UNSIGNED), item_param),
1289                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_icmp,
1290                                              hdr.icmp_code)),
1291         },
1292         [ITEM_UDP] = {
1293                 .name = "udp",
1294                 .help = "match UDP header",
1295                 .priv = PRIV_ITEM(UDP, sizeof(struct rte_flow_item_udp)),
1296                 .next = NEXT(item_udp),
1297                 .call = parse_vc,
1298         },
1299         [ITEM_UDP_SRC] = {
1300                 .name = "src",
1301                 .help = "UDP source port",
1302                 .next = NEXT(item_udp, NEXT_ENTRY(UNSIGNED), item_param),
1303                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_udp,
1304                                              hdr.src_port)),
1305         },
1306         [ITEM_UDP_DST] = {
1307                 .name = "dst",
1308                 .help = "UDP destination port",
1309                 .next = NEXT(item_udp, NEXT_ENTRY(UNSIGNED), item_param),
1310                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_udp,
1311                                              hdr.dst_port)),
1312         },
1313         [ITEM_TCP] = {
1314                 .name = "tcp",
1315                 .help = "match TCP header",
1316                 .priv = PRIV_ITEM(TCP, sizeof(struct rte_flow_item_tcp)),
1317                 .next = NEXT(item_tcp),
1318                 .call = parse_vc,
1319         },
1320         [ITEM_TCP_SRC] = {
1321                 .name = "src",
1322                 .help = "TCP source port",
1323                 .next = NEXT(item_tcp, NEXT_ENTRY(UNSIGNED), item_param),
1324                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_tcp,
1325                                              hdr.src_port)),
1326         },
1327         [ITEM_TCP_DST] = {
1328                 .name = "dst",
1329                 .help = "TCP destination port",
1330                 .next = NEXT(item_tcp, NEXT_ENTRY(UNSIGNED), item_param),
1331                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_tcp,
1332                                              hdr.dst_port)),
1333         },
1334         [ITEM_TCP_FLAGS] = {
1335                 .name = "flags",
1336                 .help = "TCP flags",
1337                 .next = NEXT(item_tcp, NEXT_ENTRY(UNSIGNED), item_param),
1338                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_tcp,
1339                                              hdr.tcp_flags)),
1340         },
1341         [ITEM_SCTP] = {
1342                 .name = "sctp",
1343                 .help = "match SCTP header",
1344                 .priv = PRIV_ITEM(SCTP, sizeof(struct rte_flow_item_sctp)),
1345                 .next = NEXT(item_sctp),
1346                 .call = parse_vc,
1347         },
1348         [ITEM_SCTP_SRC] = {
1349                 .name = "src",
1350                 .help = "SCTP source port",
1351                 .next = NEXT(item_sctp, NEXT_ENTRY(UNSIGNED), item_param),
1352                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_sctp,
1353                                              hdr.src_port)),
1354         },
1355         [ITEM_SCTP_DST] = {
1356                 .name = "dst",
1357                 .help = "SCTP destination port",
1358                 .next = NEXT(item_sctp, NEXT_ENTRY(UNSIGNED), item_param),
1359                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_sctp,
1360                                              hdr.dst_port)),
1361         },
1362         [ITEM_SCTP_TAG] = {
1363                 .name = "tag",
1364                 .help = "validation tag",
1365                 .next = NEXT(item_sctp, NEXT_ENTRY(UNSIGNED), item_param),
1366                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_sctp,
1367                                              hdr.tag)),
1368         },
1369         [ITEM_SCTP_CKSUM] = {
1370                 .name = "cksum",
1371                 .help = "checksum",
1372                 .next = NEXT(item_sctp, NEXT_ENTRY(UNSIGNED), item_param),
1373                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_sctp,
1374                                              hdr.cksum)),
1375         },
1376         [ITEM_VXLAN] = {
1377                 .name = "vxlan",
1378                 .help = "match VXLAN header",
1379                 .priv = PRIV_ITEM(VXLAN, sizeof(struct rte_flow_item_vxlan)),
1380                 .next = NEXT(item_vxlan),
1381                 .call = parse_vc,
1382         },
1383         [ITEM_VXLAN_VNI] = {
1384                 .name = "vni",
1385                 .help = "VXLAN identifier",
1386                 .next = NEXT(item_vxlan, NEXT_ENTRY(UNSIGNED), item_param),
1387                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_vxlan, vni)),
1388         },
1389         [ITEM_E_TAG] = {
1390                 .name = "e_tag",
1391                 .help = "match E-Tag header",
1392                 .priv = PRIV_ITEM(E_TAG, sizeof(struct rte_flow_item_e_tag)),
1393                 .next = NEXT(item_e_tag),
1394                 .call = parse_vc,
1395         },
1396         [ITEM_E_TAG_GRP_ECID_B] = {
1397                 .name = "grp_ecid_b",
1398                 .help = "GRP and E-CID base",
1399                 .next = NEXT(item_e_tag, NEXT_ENTRY(UNSIGNED), item_param),
1400                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_e_tag,
1401                                                   rsvd_grp_ecid_b,
1402                                                   "\x3f\xff")),
1403         },
1404         [ITEM_NVGRE] = {
1405                 .name = "nvgre",
1406                 .help = "match NVGRE header",
1407                 .priv = PRIV_ITEM(NVGRE, sizeof(struct rte_flow_item_nvgre)),
1408                 .next = NEXT(item_nvgre),
1409                 .call = parse_vc,
1410         },
1411         [ITEM_NVGRE_TNI] = {
1412                 .name = "tni",
1413                 .help = "virtual subnet ID",
1414                 .next = NEXT(item_nvgre, NEXT_ENTRY(UNSIGNED), item_param),
1415                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_nvgre, tni)),
1416         },
1417         [ITEM_MPLS] = {
1418                 .name = "mpls",
1419                 .help = "match MPLS header",
1420                 .priv = PRIV_ITEM(MPLS, sizeof(struct rte_flow_item_mpls)),
1421                 .next = NEXT(item_mpls),
1422                 .call = parse_vc,
1423         },
1424         [ITEM_MPLS_LABEL] = {
1425                 .name = "label",
1426                 .help = "MPLS label",
1427                 .next = NEXT(item_mpls, NEXT_ENTRY(UNSIGNED), item_param),
1428                 .args = ARGS(ARGS_ENTRY_MASK_HTON(struct rte_flow_item_mpls,
1429                                                   label_tc_s,
1430                                                   "\xff\xff\xf0")),
1431         },
1432         [ITEM_GRE] = {
1433                 .name = "gre",
1434                 .help = "match GRE header",
1435                 .priv = PRIV_ITEM(GRE, sizeof(struct rte_flow_item_gre)),
1436                 .next = NEXT(item_gre),
1437                 .call = parse_vc,
1438         },
1439         [ITEM_GRE_PROTO] = {
1440                 .name = "protocol",
1441                 .help = "GRE protocol type",
1442                 .next = NEXT(item_gre, NEXT_ENTRY(UNSIGNED), item_param),
1443                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_gre,
1444                                              protocol)),
1445         },
1446         [ITEM_FUZZY] = {
1447                 .name = "fuzzy",
1448                 .help = "fuzzy pattern match, expect faster than default",
1449                 .priv = PRIV_ITEM(FUZZY,
1450                                 sizeof(struct rte_flow_item_fuzzy)),
1451                 .next = NEXT(item_fuzzy),
1452                 .call = parse_vc,
1453         },
1454         [ITEM_FUZZY_THRESH] = {
1455                 .name = "thresh",
1456                 .help = "match accuracy threshold",
1457                 .next = NEXT(item_fuzzy, NEXT_ENTRY(UNSIGNED), item_param),
1458                 .args = ARGS(ARGS_ENTRY(struct rte_flow_item_fuzzy,
1459                                         thresh)),
1460         },
1461         [ITEM_GTP] = {
1462                 .name = "gtp",
1463                 .help = "match GTP header",
1464                 .priv = PRIV_ITEM(GTP, sizeof(struct rte_flow_item_gtp)),
1465                 .next = NEXT(item_gtp),
1466                 .call = parse_vc,
1467         },
1468         [ITEM_GTP_TEID] = {
1469                 .name = "teid",
1470                 .help = "tunnel endpoint identifier",
1471                 .next = NEXT(item_gtp, NEXT_ENTRY(UNSIGNED), item_param),
1472                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_gtp, teid)),
1473         },
1474         [ITEM_GTPC] = {
1475                 .name = "gtpc",
1476                 .help = "match GTP header",
1477                 .priv = PRIV_ITEM(GTPC, sizeof(struct rte_flow_item_gtp)),
1478                 .next = NEXT(item_gtp),
1479                 .call = parse_vc,
1480         },
1481         [ITEM_GTPU] = {
1482                 .name = "gtpu",
1483                 .help = "match GTP header",
1484                 .priv = PRIV_ITEM(GTPU, sizeof(struct rte_flow_item_gtp)),
1485                 .next = NEXT(item_gtp),
1486                 .call = parse_vc,
1487         },
1488         [ITEM_GENEVE] = {
1489                 .name = "geneve",
1490                 .help = "match GENEVE header",
1491                 .priv = PRIV_ITEM(GENEVE, sizeof(struct rte_flow_item_geneve)),
1492                 .next = NEXT(item_geneve),
1493                 .call = parse_vc,
1494         },
1495         [ITEM_GENEVE_VNI] = {
1496                 .name = "vni",
1497                 .help = "virtual network identifier",
1498                 .next = NEXT(item_geneve, NEXT_ENTRY(UNSIGNED), item_param),
1499                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_geneve, vni)),
1500         },
1501         [ITEM_GENEVE_PROTO] = {
1502                 .name = "protocol",
1503                 .help = "GENEVE protocol type",
1504                 .next = NEXT(item_geneve, NEXT_ENTRY(UNSIGNED), item_param),
1505                 .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_geneve,
1506                                              protocol)),
1507         },
1508
1509         /* Validate/create actions. */
1510         [ACTIONS] = {
1511                 .name = "actions",
1512                 .help = "submit a list of associated actions",
1513                 .next = NEXT(next_action),
1514                 .call = parse_vc,
1515         },
1516         [ACTION_NEXT] = {
1517                 .name = "/",
1518                 .help = "specify next action",
1519                 .next = NEXT(next_action),
1520         },
1521         [ACTION_END] = {
1522                 .name = "end",
1523                 .help = "end list of actions",
1524                 .priv = PRIV_ACTION(END, 0),
1525                 .call = parse_vc,
1526         },
1527         [ACTION_VOID] = {
1528                 .name = "void",
1529                 .help = "no-op action",
1530                 .priv = PRIV_ACTION(VOID, 0),
1531                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1532                 .call = parse_vc,
1533         },
1534         [ACTION_PASSTHRU] = {
1535                 .name = "passthru",
1536                 .help = "let subsequent rule process matched packets",
1537                 .priv = PRIV_ACTION(PASSTHRU, 0),
1538                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1539                 .call = parse_vc,
1540         },
1541         [ACTION_MARK] = {
1542                 .name = "mark",
1543                 .help = "attach 32 bit value to packets",
1544                 .priv = PRIV_ACTION(MARK, sizeof(struct rte_flow_action_mark)),
1545                 .next = NEXT(action_mark),
1546                 .call = parse_vc,
1547         },
1548         [ACTION_MARK_ID] = {
1549                 .name = "id",
1550                 .help = "32 bit value to return with packets",
1551                 .next = NEXT(action_mark, NEXT_ENTRY(UNSIGNED)),
1552                 .args = ARGS(ARGS_ENTRY(struct rte_flow_action_mark, id)),
1553                 .call = parse_vc_conf,
1554         },
1555         [ACTION_FLAG] = {
1556                 .name = "flag",
1557                 .help = "flag packets",
1558                 .priv = PRIV_ACTION(FLAG, 0),
1559                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1560                 .call = parse_vc,
1561         },
1562         [ACTION_QUEUE] = {
1563                 .name = "queue",
1564                 .help = "assign packets to a given queue index",
1565                 .priv = PRIV_ACTION(QUEUE,
1566                                     sizeof(struct rte_flow_action_queue)),
1567                 .next = NEXT(action_queue),
1568                 .call = parse_vc,
1569         },
1570         [ACTION_QUEUE_INDEX] = {
1571                 .name = "index",
1572                 .help = "queue index to use",
1573                 .next = NEXT(action_queue, NEXT_ENTRY(UNSIGNED)),
1574                 .args = ARGS(ARGS_ENTRY(struct rte_flow_action_queue, index)),
1575                 .call = parse_vc_conf,
1576         },
1577         [ACTION_DROP] = {
1578                 .name = "drop",
1579                 .help = "drop packets (note: passthru has priority)",
1580                 .priv = PRIV_ACTION(DROP, 0),
1581                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1582                 .call = parse_vc,
1583         },
1584         [ACTION_COUNT] = {
1585                 .name = "count",
1586                 .help = "enable counters for this rule",
1587                 .priv = PRIV_ACTION(COUNT, 0),
1588                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1589                 .call = parse_vc,
1590         },
1591         [ACTION_RSS] = {
1592                 .name = "rss",
1593                 .help = "spread packets among several queues",
1594                 .priv = PRIV_ACTION(RSS, sizeof(struct action_rss_data)),
1595                 .next = NEXT(action_rss),
1596                 .call = parse_vc_action_rss,
1597         },
1598         [ACTION_RSS_FUNC] = {
1599                 .name = "func",
1600                 .help = "RSS hash function to apply",
1601                 .next = NEXT(action_rss,
1602                              NEXT_ENTRY(ACTION_RSS_FUNC_DEFAULT,
1603                                         ACTION_RSS_FUNC_TOEPLITZ,
1604                                         ACTION_RSS_FUNC_SIMPLE_XOR)),
1605         },
1606         [ACTION_RSS_FUNC_DEFAULT] = {
1607                 .name = "default",
1608                 .help = "default hash function",
1609                 .call = parse_vc_action_rss_func,
1610         },
1611         [ACTION_RSS_FUNC_TOEPLITZ] = {
1612                 .name = "toeplitz",
1613                 .help = "Toeplitz hash function",
1614                 .call = parse_vc_action_rss_func,
1615         },
1616         [ACTION_RSS_FUNC_SIMPLE_XOR] = {
1617                 .name = "simple_xor",
1618                 .help = "simple XOR hash function",
1619                 .call = parse_vc_action_rss_func,
1620         },
1621         [ACTION_RSS_LEVEL] = {
1622                 .name = "level",
1623                 .help = "encapsulation level for \"types\"",
1624                 .next = NEXT(action_rss, NEXT_ENTRY(UNSIGNED)),
1625                 .args = ARGS(ARGS_ENTRY_ARB
1626                              (offsetof(struct action_rss_data, conf) +
1627                               offsetof(struct rte_flow_action_rss, level),
1628                               sizeof(((struct rte_flow_action_rss *)0)->
1629                                      level))),
1630         },
1631         [ACTION_RSS_TYPES] = {
1632                 .name = "types",
1633                 .help = "specific RSS hash types",
1634                 .next = NEXT(action_rss, NEXT_ENTRY(ACTION_RSS_TYPE)),
1635         },
1636         [ACTION_RSS_TYPE] = {
1637                 .name = "{type}",
1638                 .help = "RSS hash type",
1639                 .call = parse_vc_action_rss_type,
1640                 .comp = comp_vc_action_rss_type,
1641         },
1642         [ACTION_RSS_KEY] = {
1643                 .name = "key",
1644                 .help = "RSS hash key",
1645                 .next = NEXT(action_rss, NEXT_ENTRY(STRING)),
1646                 .args = ARGS(ARGS_ENTRY_ARB(0, 0),
1647                              ARGS_ENTRY_ARB
1648                              (offsetof(struct action_rss_data, conf) +
1649                               offsetof(struct rte_flow_action_rss, key_len),
1650                               sizeof(((struct rte_flow_action_rss *)0)->
1651                                      key_len)),
1652                              ARGS_ENTRY(struct action_rss_data, key)),
1653         },
1654         [ACTION_RSS_KEY_LEN] = {
1655                 .name = "key_len",
1656                 .help = "RSS hash key length in bytes",
1657                 .next = NEXT(action_rss, NEXT_ENTRY(UNSIGNED)),
1658                 .args = ARGS(ARGS_ENTRY_ARB_BOUNDED
1659                              (offsetof(struct action_rss_data, conf) +
1660                               offsetof(struct rte_flow_action_rss, key_len),
1661                               sizeof(((struct rte_flow_action_rss *)0)->
1662                                      key_len),
1663                               0,
1664                               RSS_HASH_KEY_LENGTH)),
1665         },
1666         [ACTION_RSS_QUEUES] = {
1667                 .name = "queues",
1668                 .help = "queue indices to use",
1669                 .next = NEXT(action_rss, NEXT_ENTRY(ACTION_RSS_QUEUE)),
1670                 .call = parse_vc_conf,
1671         },
1672         [ACTION_RSS_QUEUE] = {
1673                 .name = "{queue}",
1674                 .help = "queue index",
1675                 .call = parse_vc_action_rss_queue,
1676                 .comp = comp_vc_action_rss_queue,
1677         },
1678         [ACTION_PF] = {
1679                 .name = "pf",
1680                 .help = "redirect packets to physical device function",
1681                 .priv = PRIV_ACTION(PF, 0),
1682                 .next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
1683                 .call = parse_vc,
1684         },
1685         [ACTION_VF] = {
1686                 .name = "vf",
1687                 .help = "redirect packets to virtual device function",
1688                 .priv = PRIV_ACTION(VF, sizeof(struct rte_flow_action_vf)),
1689                 .next = NEXT(action_vf),
1690                 .call = parse_vc,
1691         },
1692         [ACTION_VF_ORIGINAL] = {
1693                 .name = "original",
1694                 .help = "use original VF ID if possible",
1695                 .next = NEXT(action_vf, NEXT_ENTRY(BOOLEAN)),
1696                 .args = ARGS(ARGS_ENTRY_BF(struct rte_flow_action_vf,
1697                                            original, 1)),
1698                 .call = parse_vc_conf,
1699         },
1700         [ACTION_VF_ID] = {
1701                 .name = "id",
1702                 .help = "VF ID to redirect packets to",
1703                 .next = NEXT(action_vf, NEXT_ENTRY(UNSIGNED)),
1704                 .args = ARGS(ARGS_ENTRY(struct rte_flow_action_vf, id)),
1705                 .call = parse_vc_conf,
1706         },
1707         [ACTION_METER] = {
1708                 .name = "meter",
1709                 .help = "meter the directed packets at given id",
1710                 .priv = PRIV_ACTION(METER,
1711                                     sizeof(struct rte_flow_action_meter)),
1712                 .next = NEXT(action_meter),
1713                 .call = parse_vc,
1714         },
1715         [ACTION_METER_ID] = {
1716                 .name = "mtr_id",
1717                 .help = "meter id to use",
1718                 .next = NEXT(action_meter, NEXT_ENTRY(UNSIGNED)),
1719                 .args = ARGS(ARGS_ENTRY(struct rte_flow_action_meter, mtr_id)),
1720                 .call = parse_vc_conf,
1721         },
1722 };
1723
1724 /** Remove and return last entry from argument stack. */
1725 static const struct arg *
1726 pop_args(struct context *ctx)
1727 {
1728         return ctx->args_num ? ctx->args[--ctx->args_num] : NULL;
1729 }
1730
1731 /** Add entry on top of the argument stack. */
1732 static int
1733 push_args(struct context *ctx, const struct arg *arg)
1734 {
1735         if (ctx->args_num == CTX_STACK_SIZE)
1736                 return -1;
1737         ctx->args[ctx->args_num++] = arg;
1738         return 0;
1739 }
1740
1741 /** Spread value into buffer according to bit-mask. */
1742 static size_t
1743 arg_entry_bf_fill(void *dst, uintmax_t val, const struct arg *arg)
1744 {
1745         uint32_t i = arg->size;
1746         uint32_t end = 0;
1747         int sub = 1;
1748         int add = 0;
1749         size_t len = 0;
1750
1751         if (!arg->mask)
1752                 return 0;
1753 #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
1754         if (!arg->hton) {
1755                 i = 0;
1756                 end = arg->size;
1757                 sub = 0;
1758                 add = 1;
1759         }
1760 #endif
1761         while (i != end) {
1762                 unsigned int shift = 0;
1763                 uint8_t *buf = (uint8_t *)dst + arg->offset + (i -= sub);
1764
1765                 for (shift = 0; arg->mask[i] >> shift; ++shift) {
1766                         if (!(arg->mask[i] & (1 << shift)))
1767                                 continue;
1768                         ++len;
1769                         if (!dst)
1770                                 continue;
1771                         *buf &= ~(1 << shift);
1772                         *buf |= (val & 1) << shift;
1773                         val >>= 1;
1774                 }
1775                 i += add;
1776         }
1777         return len;
1778 }
1779
1780 /** Compare a string with a partial one of a given length. */
1781 static int
1782 strcmp_partial(const char *full, const char *partial, size_t partial_len)
1783 {
1784         int r = strncmp(full, partial, partial_len);
1785
1786         if (r)
1787                 return r;
1788         if (strlen(full) <= partial_len)
1789                 return 0;
1790         return full[partial_len];
1791 }
1792
1793 /**
1794  * Parse a prefix length and generate a bit-mask.
1795  *
1796  * Last argument (ctx->args) is retrieved to determine mask size, storage
1797  * location and whether the result must use network byte ordering.
1798  */
1799 static int
1800 parse_prefix(struct context *ctx, const struct token *token,
1801              const char *str, unsigned int len,
1802              void *buf, unsigned int size)
1803 {
1804         const struct arg *arg = pop_args(ctx);
1805         static const uint8_t conv[] = "\x00\x80\xc0\xe0\xf0\xf8\xfc\xfe\xff";
1806         char *end;
1807         uintmax_t u;
1808         unsigned int bytes;
1809         unsigned int extra;
1810
1811         (void)token;
1812         /* Argument is expected. */
1813         if (!arg)
1814                 return -1;
1815         errno = 0;
1816         u = strtoumax(str, &end, 0);
1817         if (errno || (size_t)(end - str) != len)
1818                 goto error;
1819         if (arg->mask) {
1820                 uintmax_t v = 0;
1821
1822                 extra = arg_entry_bf_fill(NULL, 0, arg);
1823                 if (u > extra)
1824                         goto error;
1825                 if (!ctx->object)
1826                         return len;
1827                 extra -= u;
1828                 while (u--)
1829                         (v <<= 1, v |= 1);
1830                 v <<= extra;
1831                 if (!arg_entry_bf_fill(ctx->object, v, arg) ||
1832                     !arg_entry_bf_fill(ctx->objmask, -1, arg))
1833                         goto error;
1834                 return len;
1835         }
1836         bytes = u / 8;
1837         extra = u % 8;
1838         size = arg->size;
1839         if (bytes > size || bytes + !!extra > size)
1840                 goto error;
1841         if (!ctx->object)
1842                 return len;
1843         buf = (uint8_t *)ctx->object + arg->offset;
1844 #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
1845         if (!arg->hton) {
1846                 memset((uint8_t *)buf + size - bytes, 0xff, bytes);
1847                 memset(buf, 0x00, size - bytes);
1848                 if (extra)
1849                         ((uint8_t *)buf)[size - bytes - 1] = conv[extra];
1850         } else
1851 #endif
1852         {
1853                 memset(buf, 0xff, bytes);
1854                 memset((uint8_t *)buf + bytes, 0x00, size - bytes);
1855                 if (extra)
1856                         ((uint8_t *)buf)[bytes] = conv[extra];
1857         }
1858         if (ctx->objmask)
1859                 memset((uint8_t *)ctx->objmask + arg->offset, 0xff, size);
1860         return len;
1861 error:
1862         push_args(ctx, arg);
1863         return -1;
1864 }
1865
1866 /** Default parsing function for token name matching. */
1867 static int
1868 parse_default(struct context *ctx, const struct token *token,
1869               const char *str, unsigned int len,
1870               void *buf, unsigned int size)
1871 {
1872         (void)ctx;
1873         (void)buf;
1874         (void)size;
1875         if (strcmp_partial(token->name, str, len))
1876                 return -1;
1877         return len;
1878 }
1879
1880 /** Parse flow command, initialize output buffer for subsequent tokens. */
1881 static int
1882 parse_init(struct context *ctx, const struct token *token,
1883            const char *str, unsigned int len,
1884            void *buf, unsigned int size)
1885 {
1886         struct buffer *out = buf;
1887
1888         /* Token name must match. */
1889         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
1890                 return -1;
1891         /* Nothing else to do if there is no buffer. */
1892         if (!out)
1893                 return len;
1894         /* Make sure buffer is large enough. */
1895         if (size < sizeof(*out))
1896                 return -1;
1897         /* Initialize buffer. */
1898         memset(out, 0x00, sizeof(*out));
1899         memset((uint8_t *)out + sizeof(*out), 0x22, size - sizeof(*out));
1900         ctx->objdata = 0;
1901         ctx->object = out;
1902         ctx->objmask = NULL;
1903         return len;
1904 }
1905
1906 /** Parse tokens for validate/create commands. */
1907 static int
1908 parse_vc(struct context *ctx, const struct token *token,
1909          const char *str, unsigned int len,
1910          void *buf, unsigned int size)
1911 {
1912         struct buffer *out = buf;
1913         uint8_t *data;
1914         uint32_t data_size;
1915
1916         /* Token name must match. */
1917         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
1918                 return -1;
1919         /* Nothing else to do if there is no buffer. */
1920         if (!out)
1921                 return len;
1922         if (!out->command) {
1923                 if (ctx->curr != VALIDATE && ctx->curr != CREATE)
1924                         return -1;
1925                 if (sizeof(*out) > size)
1926                         return -1;
1927                 out->command = ctx->curr;
1928                 ctx->objdata = 0;
1929                 ctx->object = out;
1930                 ctx->objmask = NULL;
1931                 out->args.vc.data = (uint8_t *)out + size;
1932                 return len;
1933         }
1934         ctx->objdata = 0;
1935         ctx->object = &out->args.vc.attr;
1936         ctx->objmask = NULL;
1937         switch (ctx->curr) {
1938         case GROUP:
1939         case PRIORITY:
1940                 return len;
1941         case INGRESS:
1942                 out->args.vc.attr.ingress = 1;
1943                 return len;
1944         case EGRESS:
1945                 out->args.vc.attr.egress = 1;
1946                 return len;
1947         case PATTERN:
1948                 out->args.vc.pattern =
1949                         (void *)RTE_ALIGN_CEIL((uintptr_t)(out + 1),
1950                                                sizeof(double));
1951                 ctx->object = out->args.vc.pattern;
1952                 ctx->objmask = NULL;
1953                 return len;
1954         case ACTIONS:
1955                 out->args.vc.actions =
1956                         (void *)RTE_ALIGN_CEIL((uintptr_t)
1957                                                (out->args.vc.pattern +
1958                                                 out->args.vc.pattern_n),
1959                                                sizeof(double));
1960                 ctx->object = out->args.vc.actions;
1961                 ctx->objmask = NULL;
1962                 return len;
1963         default:
1964                 if (!token->priv)
1965                         return -1;
1966                 break;
1967         }
1968         if (!out->args.vc.actions) {
1969                 const struct parse_item_priv *priv = token->priv;
1970                 struct rte_flow_item *item =
1971                         out->args.vc.pattern + out->args.vc.pattern_n;
1972
1973                 data_size = priv->size * 3; /* spec, last, mask */
1974                 data = (void *)RTE_ALIGN_FLOOR((uintptr_t)
1975                                                (out->args.vc.data - data_size),
1976                                                sizeof(double));
1977                 if ((uint8_t *)item + sizeof(*item) > data)
1978                         return -1;
1979                 *item = (struct rte_flow_item){
1980                         .type = priv->type,
1981                 };
1982                 ++out->args.vc.pattern_n;
1983                 ctx->object = item;
1984                 ctx->objmask = NULL;
1985         } else {
1986                 const struct parse_action_priv *priv = token->priv;
1987                 struct rte_flow_action *action =
1988                         out->args.vc.actions + out->args.vc.actions_n;
1989
1990                 data_size = priv->size; /* configuration */
1991                 data = (void *)RTE_ALIGN_FLOOR((uintptr_t)
1992                                                (out->args.vc.data - data_size),
1993                                                sizeof(double));
1994                 if ((uint8_t *)action + sizeof(*action) > data)
1995                         return -1;
1996                 *action = (struct rte_flow_action){
1997                         .type = priv->type,
1998                         .conf = data_size ? data : NULL,
1999                 };
2000                 ++out->args.vc.actions_n;
2001                 ctx->object = action;
2002                 ctx->objmask = NULL;
2003         }
2004         memset(data, 0, data_size);
2005         out->args.vc.data = data;
2006         ctx->objdata = data_size;
2007         return len;
2008 }
2009
2010 /** Parse pattern item parameter type. */
2011 static int
2012 parse_vc_spec(struct context *ctx, const struct token *token,
2013               const char *str, unsigned int len,
2014               void *buf, unsigned int size)
2015 {
2016         struct buffer *out = buf;
2017         struct rte_flow_item *item;
2018         uint32_t data_size;
2019         int index;
2020         int objmask = 0;
2021
2022         (void)size;
2023         /* Token name must match. */
2024         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2025                 return -1;
2026         /* Parse parameter types. */
2027         switch (ctx->curr) {
2028                 static const enum index prefix[] = NEXT_ENTRY(PREFIX);
2029
2030         case ITEM_PARAM_IS:
2031                 index = 0;
2032                 objmask = 1;
2033                 break;
2034         case ITEM_PARAM_SPEC:
2035                 index = 0;
2036                 break;
2037         case ITEM_PARAM_LAST:
2038                 index = 1;
2039                 break;
2040         case ITEM_PARAM_PREFIX:
2041                 /* Modify next token to expect a prefix. */
2042                 if (ctx->next_num < 2)
2043                         return -1;
2044                 ctx->next[ctx->next_num - 2] = prefix;
2045                 /* Fall through. */
2046         case ITEM_PARAM_MASK:
2047                 index = 2;
2048                 break;
2049         default:
2050                 return -1;
2051         }
2052         /* Nothing else to do if there is no buffer. */
2053         if (!out)
2054                 return len;
2055         if (!out->args.vc.pattern_n)
2056                 return -1;
2057         item = &out->args.vc.pattern[out->args.vc.pattern_n - 1];
2058         data_size = ctx->objdata / 3; /* spec, last, mask */
2059         /* Point to selected object. */
2060         ctx->object = out->args.vc.data + (data_size * index);
2061         if (objmask) {
2062                 ctx->objmask = out->args.vc.data + (data_size * 2); /* mask */
2063                 item->mask = ctx->objmask;
2064         } else
2065                 ctx->objmask = NULL;
2066         /* Update relevant item pointer. */
2067         *((const void **[]){ &item->spec, &item->last, &item->mask })[index] =
2068                 ctx->object;
2069         return len;
2070 }
2071
2072 /** Parse action configuration field. */
2073 static int
2074 parse_vc_conf(struct context *ctx, const struct token *token,
2075               const char *str, unsigned int len,
2076               void *buf, unsigned int size)
2077 {
2078         struct buffer *out = buf;
2079
2080         (void)size;
2081         /* Token name must match. */
2082         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2083                 return -1;
2084         /* Nothing else to do if there is no buffer. */
2085         if (!out)
2086                 return len;
2087         /* Point to selected object. */
2088         ctx->object = out->args.vc.data;
2089         ctx->objmask = NULL;
2090         return len;
2091 }
2092
2093 /** Parse RSS action. */
2094 static int
2095 parse_vc_action_rss(struct context *ctx, const struct token *token,
2096                     const char *str, unsigned int len,
2097                     void *buf, unsigned int size)
2098 {
2099         struct buffer *out = buf;
2100         struct rte_flow_action *action;
2101         struct action_rss_data *action_rss_data;
2102         unsigned int i;
2103         int ret;
2104
2105         ret = parse_vc(ctx, token, str, len, buf, size);
2106         if (ret < 0)
2107                 return ret;
2108         /* Nothing else to do if there is no buffer. */
2109         if (!out)
2110                 return ret;
2111         if (!out->args.vc.actions_n)
2112                 return -1;
2113         action = &out->args.vc.actions[out->args.vc.actions_n - 1];
2114         /* Point to selected object. */
2115         ctx->object = out->args.vc.data;
2116         ctx->objmask = NULL;
2117         /* Set up default configuration. */
2118         action_rss_data = ctx->object;
2119         *action_rss_data = (struct action_rss_data){
2120                 .conf = (struct rte_flow_action_rss){
2121                         .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2122                         .level = 0,
2123                         .types = rss_hf,
2124                         .key_len = sizeof(action_rss_data->key),
2125                         .queue_num = RTE_MIN(nb_rxq, ACTION_RSS_QUEUE_NUM),
2126                         .key = action_rss_data->key,
2127                         .queue = action_rss_data->queue,
2128                 },
2129                 .key = "testpmd's default RSS hash key",
2130                 .queue = { 0 },
2131         };
2132         for (i = 0; i < action_rss_data->conf.queue_num; ++i)
2133                 action_rss_data->queue[i] = i;
2134         if (!port_id_is_invalid(ctx->port, DISABLED_WARN) &&
2135             ctx->port != (portid_t)RTE_PORT_ALL) {
2136                 struct rte_eth_dev_info info;
2137
2138                 rte_eth_dev_info_get(ctx->port, &info);
2139                 action_rss_data->conf.key_len =
2140                         RTE_MIN(sizeof(action_rss_data->key),
2141                                 info.hash_key_size);
2142         }
2143         action->conf = &action_rss_data->conf;
2144         return ret;
2145 }
2146
2147 /**
2148  * Parse func field for RSS action.
2149  *
2150  * The RTE_ETH_HASH_FUNCTION_* value to assign is derived from the
2151  * ACTION_RSS_FUNC_* index that called this function.
2152  */
2153 static int
2154 parse_vc_action_rss_func(struct context *ctx, const struct token *token,
2155                          const char *str, unsigned int len,
2156                          void *buf, unsigned int size)
2157 {
2158         struct action_rss_data *action_rss_data;
2159         enum rte_eth_hash_function func;
2160
2161         (void)buf;
2162         (void)size;
2163         /* Token name must match. */
2164         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2165                 return -1;
2166         switch (ctx->curr) {
2167         case ACTION_RSS_FUNC_DEFAULT:
2168                 func = RTE_ETH_HASH_FUNCTION_DEFAULT;
2169                 break;
2170         case ACTION_RSS_FUNC_TOEPLITZ:
2171                 func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
2172                 break;
2173         case ACTION_RSS_FUNC_SIMPLE_XOR:
2174                 func = RTE_ETH_HASH_FUNCTION_SIMPLE_XOR;
2175                 break;
2176         default:
2177                 return -1;
2178         }
2179         if (!ctx->object)
2180                 return len;
2181         action_rss_data = ctx->object;
2182         action_rss_data->conf.func = func;
2183         return len;
2184 }
2185
2186 /**
2187  * Parse type field for RSS action.
2188  *
2189  * Valid tokens are type field names and the "end" token.
2190  */
2191 static int
2192 parse_vc_action_rss_type(struct context *ctx, const struct token *token,
2193                           const char *str, unsigned int len,
2194                           void *buf, unsigned int size)
2195 {
2196         static const enum index next[] = NEXT_ENTRY(ACTION_RSS_TYPE);
2197         struct action_rss_data *action_rss_data;
2198         unsigned int i;
2199
2200         (void)token;
2201         (void)buf;
2202         (void)size;
2203         if (ctx->curr != ACTION_RSS_TYPE)
2204                 return -1;
2205         if (!(ctx->objdata >> 16) && ctx->object) {
2206                 action_rss_data = ctx->object;
2207                 action_rss_data->conf.types = 0;
2208         }
2209         if (!strcmp_partial("end", str, len)) {
2210                 ctx->objdata &= 0xffff;
2211                 return len;
2212         }
2213         for (i = 0; rss_type_table[i].str; ++i)
2214                 if (!strcmp_partial(rss_type_table[i].str, str, len))
2215                         break;
2216         if (!rss_type_table[i].str)
2217                 return -1;
2218         ctx->objdata = 1 << 16 | (ctx->objdata & 0xffff);
2219         /* Repeat token. */
2220         if (ctx->next_num == RTE_DIM(ctx->next))
2221                 return -1;
2222         ctx->next[ctx->next_num++] = next;
2223         if (!ctx->object)
2224                 return len;
2225         action_rss_data = ctx->object;
2226         action_rss_data->conf.types |= rss_type_table[i].rss_type;
2227         return len;
2228 }
2229
2230 /**
2231  * Parse queue field for RSS action.
2232  *
2233  * Valid tokens are queue indices and the "end" token.
2234  */
2235 static int
2236 parse_vc_action_rss_queue(struct context *ctx, const struct token *token,
2237                           const char *str, unsigned int len,
2238                           void *buf, unsigned int size)
2239 {
2240         static const enum index next[] = NEXT_ENTRY(ACTION_RSS_QUEUE);
2241         struct action_rss_data *action_rss_data;
2242         int ret;
2243         int i;
2244
2245         (void)token;
2246         (void)buf;
2247         (void)size;
2248         if (ctx->curr != ACTION_RSS_QUEUE)
2249                 return -1;
2250         i = ctx->objdata >> 16;
2251         if (!strcmp_partial("end", str, len)) {
2252                 ctx->objdata &= 0xffff;
2253                 return len;
2254         }
2255         if (i >= ACTION_RSS_QUEUE_NUM)
2256                 return -1;
2257         if (push_args(ctx,
2258                       ARGS_ENTRY_ARB(offsetof(struct action_rss_data, queue) +
2259                                      i * sizeof(action_rss_data->queue[i]),
2260                                      sizeof(action_rss_data->queue[i]))))
2261                 return -1;
2262         ret = parse_int(ctx, token, str, len, NULL, 0);
2263         if (ret < 0) {
2264                 pop_args(ctx);
2265                 return -1;
2266         }
2267         ++i;
2268         ctx->objdata = i << 16 | (ctx->objdata & 0xffff);
2269         /* Repeat token. */
2270         if (ctx->next_num == RTE_DIM(ctx->next))
2271                 return -1;
2272         ctx->next[ctx->next_num++] = next;
2273         if (!ctx->object)
2274                 return len;
2275         action_rss_data = ctx->object;
2276         action_rss_data->conf.queue_num = i;
2277         action_rss_data->conf.queue = i ? action_rss_data->queue : NULL;
2278         return len;
2279 }
2280
2281 /** Parse tokens for destroy command. */
2282 static int
2283 parse_destroy(struct context *ctx, const struct token *token,
2284               const char *str, unsigned int len,
2285               void *buf, unsigned int size)
2286 {
2287         struct buffer *out = buf;
2288
2289         /* Token name must match. */
2290         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2291                 return -1;
2292         /* Nothing else to do if there is no buffer. */
2293         if (!out)
2294                 return len;
2295         if (!out->command) {
2296                 if (ctx->curr != DESTROY)
2297                         return -1;
2298                 if (sizeof(*out) > size)
2299                         return -1;
2300                 out->command = ctx->curr;
2301                 ctx->objdata = 0;
2302                 ctx->object = out;
2303                 ctx->objmask = NULL;
2304                 out->args.destroy.rule =
2305                         (void *)RTE_ALIGN_CEIL((uintptr_t)(out + 1),
2306                                                sizeof(double));
2307                 return len;
2308         }
2309         if (((uint8_t *)(out->args.destroy.rule + out->args.destroy.rule_n) +
2310              sizeof(*out->args.destroy.rule)) > (uint8_t *)out + size)
2311                 return -1;
2312         ctx->objdata = 0;
2313         ctx->object = out->args.destroy.rule + out->args.destroy.rule_n++;
2314         ctx->objmask = NULL;
2315         return len;
2316 }
2317
2318 /** Parse tokens for flush command. */
2319 static int
2320 parse_flush(struct context *ctx, const struct token *token,
2321             const char *str, unsigned int len,
2322             void *buf, unsigned int size)
2323 {
2324         struct buffer *out = buf;
2325
2326         /* Token name must match. */
2327         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2328                 return -1;
2329         /* Nothing else to do if there is no buffer. */
2330         if (!out)
2331                 return len;
2332         if (!out->command) {
2333                 if (ctx->curr != FLUSH)
2334                         return -1;
2335                 if (sizeof(*out) > size)
2336                         return -1;
2337                 out->command = ctx->curr;
2338                 ctx->objdata = 0;
2339                 ctx->object = out;
2340                 ctx->objmask = NULL;
2341         }
2342         return len;
2343 }
2344
2345 /** Parse tokens for query command. */
2346 static int
2347 parse_query(struct context *ctx, const struct token *token,
2348             const char *str, unsigned int len,
2349             void *buf, unsigned int size)
2350 {
2351         struct buffer *out = buf;
2352
2353         /* Token name must match. */
2354         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2355                 return -1;
2356         /* Nothing else to do if there is no buffer. */
2357         if (!out)
2358                 return len;
2359         if (!out->command) {
2360                 if (ctx->curr != QUERY)
2361                         return -1;
2362                 if (sizeof(*out) > size)
2363                         return -1;
2364                 out->command = ctx->curr;
2365                 ctx->objdata = 0;
2366                 ctx->object = out;
2367                 ctx->objmask = NULL;
2368         }
2369         return len;
2370 }
2371
2372 /** Parse action names. */
2373 static int
2374 parse_action(struct context *ctx, const struct token *token,
2375              const char *str, unsigned int len,
2376              void *buf, unsigned int size)
2377 {
2378         struct buffer *out = buf;
2379         const struct arg *arg = pop_args(ctx);
2380         unsigned int i;
2381
2382         (void)size;
2383         /* Argument is expected. */
2384         if (!arg)
2385                 return -1;
2386         /* Parse action name. */
2387         for (i = 0; next_action[i]; ++i) {
2388                 const struct parse_action_priv *priv;
2389
2390                 token = &token_list[next_action[i]];
2391                 if (strcmp_partial(token->name, str, len))
2392                         continue;
2393                 priv = token->priv;
2394                 if (!priv)
2395                         goto error;
2396                 if (out)
2397                         memcpy((uint8_t *)ctx->object + arg->offset,
2398                                &priv->type,
2399                                arg->size);
2400                 return len;
2401         }
2402 error:
2403         push_args(ctx, arg);
2404         return -1;
2405 }
2406
2407 /** Parse tokens for list command. */
2408 static int
2409 parse_list(struct context *ctx, const struct token *token,
2410            const char *str, unsigned int len,
2411            void *buf, unsigned int size)
2412 {
2413         struct buffer *out = buf;
2414
2415         /* Token name must match. */
2416         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2417                 return -1;
2418         /* Nothing else to do if there is no buffer. */
2419         if (!out)
2420                 return len;
2421         if (!out->command) {
2422                 if (ctx->curr != LIST)
2423                         return -1;
2424                 if (sizeof(*out) > size)
2425                         return -1;
2426                 out->command = ctx->curr;
2427                 ctx->objdata = 0;
2428                 ctx->object = out;
2429                 ctx->objmask = NULL;
2430                 out->args.list.group =
2431                         (void *)RTE_ALIGN_CEIL((uintptr_t)(out + 1),
2432                                                sizeof(double));
2433                 return len;
2434         }
2435         if (((uint8_t *)(out->args.list.group + out->args.list.group_n) +
2436              sizeof(*out->args.list.group)) > (uint8_t *)out + size)
2437                 return -1;
2438         ctx->objdata = 0;
2439         ctx->object = out->args.list.group + out->args.list.group_n++;
2440         ctx->objmask = NULL;
2441         return len;
2442 }
2443
2444 /** Parse tokens for isolate command. */
2445 static int
2446 parse_isolate(struct context *ctx, const struct token *token,
2447               const char *str, unsigned int len,
2448               void *buf, unsigned int size)
2449 {
2450         struct buffer *out = buf;
2451
2452         /* Token name must match. */
2453         if (parse_default(ctx, token, str, len, NULL, 0) < 0)
2454                 return -1;
2455         /* Nothing else to do if there is no buffer. */
2456         if (!out)
2457                 return len;
2458         if (!out->command) {
2459                 if (ctx->curr != ISOLATE)
2460                         return -1;
2461                 if (sizeof(*out) > size)
2462                         return -1;
2463                 out->command = ctx->curr;
2464                 ctx->objdata = 0;
2465                 ctx->object = out;
2466                 ctx->objmask = NULL;
2467         }
2468         return len;
2469 }
2470
2471 /**
2472  * Parse signed/unsigned integers 8 to 64-bit long.
2473  *
2474  * Last argument (ctx->args) is retrieved to determine integer type and
2475  * storage location.
2476  */
2477 static int
2478 parse_int(struct context *ctx, const struct token *token,
2479           const char *str, unsigned int len,
2480           void *buf, unsigned int size)
2481 {
2482         const struct arg *arg = pop_args(ctx);
2483         uintmax_t u;
2484         char *end;
2485
2486         (void)token;
2487         /* Argument is expected. */
2488         if (!arg)
2489                 return -1;
2490         errno = 0;
2491         u = arg->sign ?
2492                 (uintmax_t)strtoimax(str, &end, 0) :
2493                 strtoumax(str, &end, 0);
2494         if (errno || (size_t)(end - str) != len)
2495                 goto error;
2496         if (arg->bounded &&
2497             ((arg->sign && ((intmax_t)u < (intmax_t)arg->min ||
2498                             (intmax_t)u > (intmax_t)arg->max)) ||
2499              (!arg->sign && (u < arg->min || u > arg->max))))
2500                 goto error;
2501         if (!ctx->object)
2502                 return len;
2503         if (arg->mask) {
2504                 if (!arg_entry_bf_fill(ctx->object, u, arg) ||
2505                     !arg_entry_bf_fill(ctx->objmask, -1, arg))
2506                         goto error;
2507                 return len;
2508         }
2509         buf = (uint8_t *)ctx->object + arg->offset;
2510         size = arg->size;
2511 objmask:
2512         switch (size) {
2513         case sizeof(uint8_t):
2514                 *(uint8_t *)buf = u;
2515                 break;
2516         case sizeof(uint16_t):
2517                 *(uint16_t *)buf = arg->hton ? rte_cpu_to_be_16(u) : u;
2518                 break;
2519         case sizeof(uint8_t [3]):
2520 #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
2521                 if (!arg->hton) {
2522                         ((uint8_t *)buf)[0] = u;
2523                         ((uint8_t *)buf)[1] = u >> 8;
2524                         ((uint8_t *)buf)[2] = u >> 16;
2525                         break;
2526                 }
2527 #endif
2528                 ((uint8_t *)buf)[0] = u >> 16;
2529                 ((uint8_t *)buf)[1] = u >> 8;
2530                 ((uint8_t *)buf)[2] = u;
2531                 break;
2532         case sizeof(uint32_t):
2533                 *(uint32_t *)buf = arg->hton ? rte_cpu_to_be_32(u) : u;
2534                 break;
2535         case sizeof(uint64_t):
2536                 *(uint64_t *)buf = arg->hton ? rte_cpu_to_be_64(u) : u;
2537                 break;
2538         default:
2539                 goto error;
2540         }
2541         if (ctx->objmask && buf != (uint8_t *)ctx->objmask + arg->offset) {
2542                 u = -1;
2543                 buf = (uint8_t *)ctx->objmask + arg->offset;
2544                 goto objmask;
2545         }
2546         return len;
2547 error:
2548         push_args(ctx, arg);
2549         return -1;
2550 }
2551
2552 /**
2553  * Parse a string.
2554  *
2555  * Three arguments (ctx->args) are retrieved from the stack to store data,
2556  * its actual length and address (in that order).
2557  */
2558 static int
2559 parse_string(struct context *ctx, const struct token *token,
2560              const char *str, unsigned int len,
2561              void *buf, unsigned int size)
2562 {
2563         const struct arg *arg_data = pop_args(ctx);
2564         const struct arg *arg_len = pop_args(ctx);
2565         const struct arg *arg_addr = pop_args(ctx);
2566         char tmp[16]; /* Ought to be enough. */
2567         int ret;
2568
2569         /* Arguments are expected. */
2570         if (!arg_data)
2571                 return -1;
2572         if (!arg_len) {
2573                 push_args(ctx, arg_data);
2574                 return -1;
2575         }
2576         if (!arg_addr) {
2577                 push_args(ctx, arg_len);
2578                 push_args(ctx, arg_data);
2579                 return -1;
2580         }
2581         size = arg_data->size;
2582         /* Bit-mask fill is not supported. */
2583         if (arg_data->mask || size < len)
2584                 goto error;
2585         if (!ctx->object)
2586                 return len;
2587         /* Let parse_int() fill length information first. */
2588         ret = snprintf(tmp, sizeof(tmp), "%u", len);
2589         if (ret < 0)
2590                 goto error;
2591         push_args(ctx, arg_len);
2592         ret = parse_int(ctx, token, tmp, ret, NULL, 0);
2593         if (ret < 0) {
2594                 pop_args(ctx);
2595                 goto error;
2596         }
2597         buf = (uint8_t *)ctx->object + arg_data->offset;
2598         /* Output buffer is not necessarily NUL-terminated. */
2599         memcpy(buf, str, len);
2600         memset((uint8_t *)buf + len, 0x00, size - len);
2601         if (ctx->objmask)
2602                 memset((uint8_t *)ctx->objmask + arg_data->offset, 0xff, len);
2603         /* Save address if requested. */
2604         if (arg_addr->size) {
2605                 memcpy((uint8_t *)ctx->object + arg_addr->offset,
2606                        (void *[]){
2607                         (uint8_t *)ctx->object + arg_data->offset
2608                        },
2609                        arg_addr->size);
2610                 if (ctx->objmask)
2611                         memcpy((uint8_t *)ctx->objmask + arg_addr->offset,
2612                                (void *[]){
2613                                 (uint8_t *)ctx->objmask + arg_data->offset
2614                                },
2615                                arg_addr->size);
2616         }
2617         return len;
2618 error:
2619         push_args(ctx, arg_addr);
2620         push_args(ctx, arg_len);
2621         push_args(ctx, arg_data);
2622         return -1;
2623 }
2624
2625 /**
2626  * Parse a MAC address.
2627  *
2628  * Last argument (ctx->args) is retrieved to determine storage size and
2629  * location.
2630  */
2631 static int
2632 parse_mac_addr(struct context *ctx, const struct token *token,
2633                const char *str, unsigned int len,
2634                void *buf, unsigned int size)
2635 {
2636         const struct arg *arg = pop_args(ctx);
2637         struct ether_addr tmp;
2638         int ret;
2639
2640         (void)token;
2641         /* Argument is expected. */
2642         if (!arg)
2643                 return -1;
2644         size = arg->size;
2645         /* Bit-mask fill is not supported. */
2646         if (arg->mask || size != sizeof(tmp))
2647                 goto error;
2648         /* Only network endian is supported. */
2649         if (!arg->hton)
2650                 goto error;
2651         ret = cmdline_parse_etheraddr(NULL, str, &tmp, size);
2652         if (ret < 0 || (unsigned int)ret != len)
2653                 goto error;
2654         if (!ctx->object)
2655                 return len;
2656         buf = (uint8_t *)ctx->object + arg->offset;
2657         memcpy(buf, &tmp, size);
2658         if (ctx->objmask)
2659                 memset((uint8_t *)ctx->objmask + arg->offset, 0xff, size);
2660         return len;
2661 error:
2662         push_args(ctx, arg);
2663         return -1;
2664 }
2665
2666 /**
2667  * Parse an IPv4 address.
2668  *
2669  * Last argument (ctx->args) is retrieved to determine storage size and
2670  * location.
2671  */
2672 static int
2673 parse_ipv4_addr(struct context *ctx, const struct token *token,
2674                 const char *str, unsigned int len,
2675                 void *buf, unsigned int size)
2676 {
2677         const struct arg *arg = pop_args(ctx);
2678         char str2[len + 1];
2679         struct in_addr tmp;
2680         int ret;
2681
2682         /* Argument is expected. */
2683         if (!arg)
2684                 return -1;
2685         size = arg->size;
2686         /* Bit-mask fill is not supported. */
2687         if (arg->mask || size != sizeof(tmp))
2688                 goto error;
2689         /* Only network endian is supported. */
2690         if (!arg->hton)
2691                 goto error;
2692         memcpy(str2, str, len);
2693         str2[len] = '\0';
2694         ret = inet_pton(AF_INET, str2, &tmp);
2695         if (ret != 1) {
2696                 /* Attempt integer parsing. */
2697                 push_args(ctx, arg);
2698                 return parse_int(ctx, token, str, len, buf, size);
2699         }
2700         if (!ctx->object)
2701                 return len;
2702         buf = (uint8_t *)ctx->object + arg->offset;
2703         memcpy(buf, &tmp, size);
2704         if (ctx->objmask)
2705                 memset((uint8_t *)ctx->objmask + arg->offset, 0xff, size);
2706         return len;
2707 error:
2708         push_args(ctx, arg);
2709         return -1;
2710 }
2711
2712 /**
2713  * Parse an IPv6 address.
2714  *
2715  * Last argument (ctx->args) is retrieved to determine storage size and
2716  * location.
2717  */
2718 static int
2719 parse_ipv6_addr(struct context *ctx, const struct token *token,
2720                 const char *str, unsigned int len,
2721                 void *buf, unsigned int size)
2722 {
2723         const struct arg *arg = pop_args(ctx);
2724         char str2[len + 1];
2725         struct in6_addr tmp;
2726         int ret;
2727
2728         (void)token;
2729         /* Argument is expected. */
2730         if (!arg)
2731                 return -1;
2732         size = arg->size;
2733         /* Bit-mask fill is not supported. */
2734         if (arg->mask || size != sizeof(tmp))
2735                 goto error;
2736         /* Only network endian is supported. */
2737         if (!arg->hton)
2738                 goto error;
2739         memcpy(str2, str, len);
2740         str2[len] = '\0';
2741         ret = inet_pton(AF_INET6, str2, &tmp);
2742         if (ret != 1)
2743                 goto error;
2744         if (!ctx->object)
2745                 return len;
2746         buf = (uint8_t *)ctx->object + arg->offset;
2747         memcpy(buf, &tmp, size);
2748         if (ctx->objmask)
2749                 memset((uint8_t *)ctx->objmask + arg->offset, 0xff, size);
2750         return len;
2751 error:
2752         push_args(ctx, arg);
2753         return -1;
2754 }
2755
2756 /** Boolean values (even indices stand for false). */
2757 static const char *const boolean_name[] = {
2758         "0", "1",
2759         "false", "true",
2760         "no", "yes",
2761         "N", "Y",
2762         "off", "on",
2763         NULL,
2764 };
2765
2766 /**
2767  * Parse a boolean value.
2768  *
2769  * Last argument (ctx->args) is retrieved to determine storage size and
2770  * location.
2771  */
2772 static int
2773 parse_boolean(struct context *ctx, const struct token *token,
2774               const char *str, unsigned int len,
2775               void *buf, unsigned int size)
2776 {
2777         const struct arg *arg = pop_args(ctx);
2778         unsigned int i;
2779         int ret;
2780
2781         /* Argument is expected. */
2782         if (!arg)
2783                 return -1;
2784         for (i = 0; boolean_name[i]; ++i)
2785                 if (!strcmp_partial(boolean_name[i], str, len))
2786                         break;
2787         /* Process token as integer. */
2788         if (boolean_name[i])
2789                 str = i & 1 ? "1" : "0";
2790         push_args(ctx, arg);
2791         ret = parse_int(ctx, token, str, strlen(str), buf, size);
2792         return ret > 0 ? (int)len : ret;
2793 }
2794
2795 /** Parse port and update context. */
2796 static int
2797 parse_port(struct context *ctx, const struct token *token,
2798            const char *str, unsigned int len,
2799            void *buf, unsigned int size)
2800 {
2801         struct buffer *out = &(struct buffer){ .port = 0 };
2802         int ret;
2803
2804         if (buf)
2805                 out = buf;
2806         else {
2807                 ctx->objdata = 0;
2808                 ctx->object = out;
2809                 ctx->objmask = NULL;
2810                 size = sizeof(*out);
2811         }
2812         ret = parse_int(ctx, token, str, len, out, size);
2813         if (ret >= 0)
2814                 ctx->port = out->port;
2815         if (!buf)
2816                 ctx->object = NULL;
2817         return ret;
2818 }
2819
2820 /** No completion. */
2821 static int
2822 comp_none(struct context *ctx, const struct token *token,
2823           unsigned int ent, char *buf, unsigned int size)
2824 {
2825         (void)ctx;
2826         (void)token;
2827         (void)ent;
2828         (void)buf;
2829         (void)size;
2830         return 0;
2831 }
2832
2833 /** Complete boolean values. */
2834 static int
2835 comp_boolean(struct context *ctx, const struct token *token,
2836              unsigned int ent, char *buf, unsigned int size)
2837 {
2838         unsigned int i;
2839
2840         (void)ctx;
2841         (void)token;
2842         for (i = 0; boolean_name[i]; ++i)
2843                 if (buf && i == ent)
2844                         return snprintf(buf, size, "%s", boolean_name[i]);
2845         if (buf)
2846                 return -1;
2847         return i;
2848 }
2849
2850 /** Complete action names. */
2851 static int
2852 comp_action(struct context *ctx, const struct token *token,
2853             unsigned int ent, char *buf, unsigned int size)
2854 {
2855         unsigned int i;
2856
2857         (void)ctx;
2858         (void)token;
2859         for (i = 0; next_action[i]; ++i)
2860                 if (buf && i == ent)
2861                         return snprintf(buf, size, "%s",
2862                                         token_list[next_action[i]].name);
2863         if (buf)
2864                 return -1;
2865         return i;
2866 }
2867
2868 /** Complete available ports. */
2869 static int
2870 comp_port(struct context *ctx, const struct token *token,
2871           unsigned int ent, char *buf, unsigned int size)
2872 {
2873         unsigned int i = 0;
2874         portid_t p;
2875
2876         (void)ctx;
2877         (void)token;
2878         RTE_ETH_FOREACH_DEV(p) {
2879                 if (buf && i == ent)
2880                         return snprintf(buf, size, "%u", p);
2881                 ++i;
2882         }
2883         if (buf)
2884                 return -1;
2885         return i;
2886 }
2887
2888 /** Complete available rule IDs. */
2889 static int
2890 comp_rule_id(struct context *ctx, const struct token *token,
2891              unsigned int ent, char *buf, unsigned int size)
2892 {
2893         unsigned int i = 0;
2894         struct rte_port *port;
2895         struct port_flow *pf;
2896
2897         (void)token;
2898         if (port_id_is_invalid(ctx->port, DISABLED_WARN) ||
2899             ctx->port == (portid_t)RTE_PORT_ALL)
2900                 return -1;
2901         port = &ports[ctx->port];
2902         for (pf = port->flow_list; pf != NULL; pf = pf->next) {
2903                 if (buf && i == ent)
2904                         return snprintf(buf, size, "%u", pf->id);
2905                 ++i;
2906         }
2907         if (buf)
2908                 return -1;
2909         return i;
2910 }
2911
2912 /** Complete type field for RSS action. */
2913 static int
2914 comp_vc_action_rss_type(struct context *ctx, const struct token *token,
2915                         unsigned int ent, char *buf, unsigned int size)
2916 {
2917         unsigned int i;
2918
2919         (void)ctx;
2920         (void)token;
2921         for (i = 0; rss_type_table[i].str; ++i)
2922                 ;
2923         if (!buf)
2924                 return i + 1;
2925         if (ent < i)
2926                 return snprintf(buf, size, "%s", rss_type_table[ent].str);
2927         if (ent == i)
2928                 return snprintf(buf, size, "end");
2929         return -1;
2930 }
2931
2932 /** Complete queue field for RSS action. */
2933 static int
2934 comp_vc_action_rss_queue(struct context *ctx, const struct token *token,
2935                          unsigned int ent, char *buf, unsigned int size)
2936 {
2937         (void)ctx;
2938         (void)token;
2939         if (!buf)
2940                 return nb_rxq + 1;
2941         if (ent < nb_rxq)
2942                 return snprintf(buf, size, "%u", ent);
2943         if (ent == nb_rxq)
2944                 return snprintf(buf, size, "end");
2945         return -1;
2946 }
2947
2948 /** Internal context. */
2949 static struct context cmd_flow_context;
2950
2951 /** Global parser instance (cmdline API). */
2952 cmdline_parse_inst_t cmd_flow;
2953
2954 /** Initialize context. */
2955 static void
2956 cmd_flow_context_init(struct context *ctx)
2957 {
2958         /* A full memset() is not necessary. */
2959         ctx->curr = ZERO;
2960         ctx->prev = ZERO;
2961         ctx->next_num = 0;
2962         ctx->args_num = 0;
2963         ctx->eol = 0;
2964         ctx->last = 0;
2965         ctx->port = 0;
2966         ctx->objdata = 0;
2967         ctx->object = NULL;
2968         ctx->objmask = NULL;
2969 }
2970
2971 /** Parse a token (cmdline API). */
2972 static int
2973 cmd_flow_parse(cmdline_parse_token_hdr_t *hdr, const char *src, void *result,
2974                unsigned int size)
2975 {
2976         struct context *ctx = &cmd_flow_context;
2977         const struct token *token;
2978         const enum index *list;
2979         int len;
2980         int i;
2981
2982         (void)hdr;
2983         token = &token_list[ctx->curr];
2984         /* Check argument length. */
2985         ctx->eol = 0;
2986         ctx->last = 1;
2987         for (len = 0; src[len]; ++len)
2988                 if (src[len] == '#' || isspace(src[len]))
2989                         break;
2990         if (!len)
2991                 return -1;
2992         /* Last argument and EOL detection. */
2993         for (i = len; src[i]; ++i)
2994                 if (src[i] == '#' || src[i] == '\r' || src[i] == '\n')
2995                         break;
2996                 else if (!isspace(src[i])) {
2997                         ctx->last = 0;
2998                         break;
2999                 }
3000         for (; src[i]; ++i)
3001                 if (src[i] == '\r' || src[i] == '\n') {
3002                         ctx->eol = 1;
3003                         break;
3004                 }
3005         /* Initialize context if necessary. */
3006         if (!ctx->next_num) {
3007                 if (!token->next)
3008                         return 0;
3009                 ctx->next[ctx->next_num++] = token->next[0];
3010         }
3011         /* Process argument through candidates. */
3012         ctx->prev = ctx->curr;
3013         list = ctx->next[ctx->next_num - 1];
3014         for (i = 0; list[i]; ++i) {
3015                 const struct token *next = &token_list[list[i]];
3016                 int tmp;
3017
3018                 ctx->curr = list[i];
3019                 if (next->call)
3020                         tmp = next->call(ctx, next, src, len, result, size);
3021                 else
3022                         tmp = parse_default(ctx, next, src, len, result, size);
3023                 if (tmp == -1 || tmp != len)
3024                         continue;
3025                 token = next;
3026                 break;
3027         }
3028         if (!list[i])
3029                 return -1;
3030         --ctx->next_num;
3031         /* Push subsequent tokens if any. */
3032         if (token->next)
3033                 for (i = 0; token->next[i]; ++i) {
3034                         if (ctx->next_num == RTE_DIM(ctx->next))
3035                                 return -1;
3036                         ctx->next[ctx->next_num++] = token->next[i];
3037                 }
3038         /* Push arguments if any. */
3039         if (token->args)
3040                 for (i = 0; token->args[i]; ++i) {
3041                         if (ctx->args_num == RTE_DIM(ctx->args))
3042                                 return -1;
3043                         ctx->args[ctx->args_num++] = token->args[i];
3044                 }
3045         return len;
3046 }
3047
3048 /** Return number of completion entries (cmdline API). */
3049 static int
3050 cmd_flow_complete_get_nb(cmdline_parse_token_hdr_t *hdr)
3051 {
3052         struct context *ctx = &cmd_flow_context;
3053         const struct token *token = &token_list[ctx->curr];
3054         const enum index *list;
3055         int i;
3056
3057         (void)hdr;
3058         /* Count number of tokens in current list. */
3059         if (ctx->next_num)
3060                 list = ctx->next[ctx->next_num - 1];
3061         else
3062                 list = token->next[0];
3063         for (i = 0; list[i]; ++i)
3064                 ;
3065         if (!i)
3066                 return 0;
3067         /*
3068          * If there is a single token, use its completion callback, otherwise
3069          * return the number of entries.
3070          */
3071         token = &token_list[list[0]];
3072         if (i == 1 && token->comp) {
3073                 /* Save index for cmd_flow_get_help(). */
3074                 ctx->prev = list[0];
3075                 return token->comp(ctx, token, 0, NULL, 0);
3076         }
3077         return i;
3078 }
3079
3080 /** Return a completion entry (cmdline API). */
3081 static int
3082 cmd_flow_complete_get_elt(cmdline_parse_token_hdr_t *hdr, int index,
3083                           char *dst, unsigned int size)
3084 {
3085         struct context *ctx = &cmd_flow_context;
3086         const struct token *token = &token_list[ctx->curr];
3087         const enum index *list;
3088         int i;
3089
3090         (void)hdr;
3091         /* Count number of tokens in current list. */
3092         if (ctx->next_num)
3093                 list = ctx->next[ctx->next_num - 1];
3094         else
3095                 list = token->next[0];
3096         for (i = 0; list[i]; ++i)
3097                 ;
3098         if (!i)
3099                 return -1;
3100         /* If there is a single token, use its completion callback. */
3101         token = &token_list[list[0]];
3102         if (i == 1 && token->comp) {
3103                 /* Save index for cmd_flow_get_help(). */
3104                 ctx->prev = list[0];
3105                 return token->comp(ctx, token, index, dst, size) < 0 ? -1 : 0;
3106         }
3107         /* Otherwise make sure the index is valid and use defaults. */
3108         if (index >= i)
3109                 return -1;
3110         token = &token_list[list[index]];
3111         snprintf(dst, size, "%s", token->name);
3112         /* Save index for cmd_flow_get_help(). */
3113         ctx->prev = list[index];
3114         return 0;
3115 }
3116
3117 /** Populate help strings for current token (cmdline API). */
3118 static int
3119 cmd_flow_get_help(cmdline_parse_token_hdr_t *hdr, char *dst, unsigned int size)
3120 {
3121         struct context *ctx = &cmd_flow_context;
3122         const struct token *token = &token_list[ctx->prev];
3123
3124         (void)hdr;
3125         if (!size)
3126                 return -1;
3127         /* Set token type and update global help with details. */
3128         snprintf(dst, size, "%s", (token->type ? token->type : "TOKEN"));
3129         if (token->help)
3130                 cmd_flow.help_str = token->help;
3131         else
3132                 cmd_flow.help_str = token->name;
3133         return 0;
3134 }
3135
3136 /** Token definition template (cmdline API). */
3137 static struct cmdline_token_hdr cmd_flow_token_hdr = {
3138         .ops = &(struct cmdline_token_ops){
3139                 .parse = cmd_flow_parse,
3140                 .complete_get_nb = cmd_flow_complete_get_nb,
3141                 .complete_get_elt = cmd_flow_complete_get_elt,
3142                 .get_help = cmd_flow_get_help,
3143         },
3144         .offset = 0,
3145 };
3146
3147 /** Populate the next dynamic token. */
3148 static void
3149 cmd_flow_tok(cmdline_parse_token_hdr_t **hdr,
3150              cmdline_parse_token_hdr_t **hdr_inst)
3151 {
3152         struct context *ctx = &cmd_flow_context;
3153
3154         /* Always reinitialize context before requesting the first token. */
3155         if (!(hdr_inst - cmd_flow.tokens))
3156                 cmd_flow_context_init(ctx);
3157         /* Return NULL when no more tokens are expected. */
3158         if (!ctx->next_num && ctx->curr) {
3159                 *hdr = NULL;
3160                 return;
3161         }
3162         /* Determine if command should end here. */
3163         if (ctx->eol && ctx->last && ctx->next_num) {
3164                 const enum index *list = ctx->next[ctx->next_num - 1];
3165                 int i;
3166
3167                 for (i = 0; list[i]; ++i) {
3168                         if (list[i] != END)
3169                                 continue;
3170                         *hdr = NULL;
3171                         return;
3172                 }
3173         }
3174         *hdr = &cmd_flow_token_hdr;
3175 }
3176
3177 /** Dispatch parsed buffer to function calls. */
3178 static void
3179 cmd_flow_parsed(const struct buffer *in)
3180 {
3181         switch (in->command) {
3182         case VALIDATE:
3183                 port_flow_validate(in->port, &in->args.vc.attr,
3184                                    in->args.vc.pattern, in->args.vc.actions);
3185                 break;
3186         case CREATE:
3187                 port_flow_create(in->port, &in->args.vc.attr,
3188                                  in->args.vc.pattern, in->args.vc.actions);
3189                 break;
3190         case DESTROY:
3191                 port_flow_destroy(in->port, in->args.destroy.rule_n,
3192                                   in->args.destroy.rule);
3193                 break;
3194         case FLUSH:
3195                 port_flow_flush(in->port);
3196                 break;
3197         case QUERY:
3198                 port_flow_query(in->port, in->args.query.rule,
3199                                 in->args.query.action);
3200                 break;
3201         case LIST:
3202                 port_flow_list(in->port, in->args.list.group_n,
3203                                in->args.list.group);
3204                 break;
3205         case ISOLATE:
3206                 port_flow_isolate(in->port, in->args.isolate.set);
3207                 break;
3208         default:
3209                 break;
3210         }
3211 }
3212
3213 /** Token generator and output processing callback (cmdline API). */
3214 static void
3215 cmd_flow_cb(void *arg0, struct cmdline *cl, void *arg2)
3216 {
3217         if (cl == NULL)
3218                 cmd_flow_tok(arg0, arg2);
3219         else
3220                 cmd_flow_parsed(arg0);
3221 }
3222
3223 /** Global parser instance (cmdline API). */
3224 cmdline_parse_inst_t cmd_flow = {
3225         .f = cmd_flow_cb,
3226         .data = NULL, /**< Unused. */
3227         .help_str = NULL, /**< Updated by cmd_flow_get_help(). */
3228         .tokens = {
3229                 NULL,
3230         }, /**< Tokens are returned by cmd_flow_tok(). */
3231 };