linux/drivers/net/ethernet/netronome/nfp/bpf/main.h
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   1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
   2/* Copyright (C) 2016-2018 Netronome Systems, Inc. */
   3
   4#ifndef __NFP_BPF_H__
   5#define __NFP_BPF_H__ 1
   6
   7#include <linux/bitfield.h>
   8#include <linux/bpf.h>
   9#include <linux/bpf_verifier.h>
  10#include <linux/kernel.h>
  11#include <linux/list.h>
  12#include <linux/rhashtable.h>
  13#include <linux/skbuff.h>
  14#include <linux/types.h>
  15#include <linux/wait.h>
  16
  17#include "../ccm.h"
  18#include "../nfp_asm.h"
  19#include "fw.h"
  20
  21#define cmsg_warn(bpf, msg...)  nn_dp_warn(&(bpf)->app->ctrl->dp, msg)
  22
  23/* For relocation logic use up-most byte of branch instruction as scratch
  24 * area.  Remember to clear this before sending instructions to HW!
  25 */
  26#define OP_RELO_TYPE    0xff00000000000000ULL
  27
  28enum nfp_relo_type {
  29        RELO_NONE = 0,
  30        /* standard internal jumps */
  31        RELO_BR_REL,
  32        /* internal jumps to parts of the outro */
  33        RELO_BR_GO_OUT,
  34        RELO_BR_GO_ABORT,
  35        RELO_BR_GO_CALL_PUSH_REGS,
  36        RELO_BR_GO_CALL_POP_REGS,
  37        /* external jumps to fixed addresses */
  38        RELO_BR_NEXT_PKT,
  39        RELO_BR_HELPER,
  40        /* immediate relocation against load address */
  41        RELO_IMMED_REL,
  42};
  43
  44/* To make absolute relocated branches (branches other than RELO_BR_REL)
  45 * distinguishable in user space dumps from normal jumps, add a large offset
  46 * to them.
  47 */
  48#define BR_OFF_RELO             15000
  49
  50enum static_regs {
  51        STATIC_REG_IMMA         = 20, /* Bank AB */
  52        STATIC_REG_IMM          = 21, /* Bank AB */
  53        STATIC_REG_STACK        = 22, /* Bank A */
  54        STATIC_REG_PKT_LEN      = 22, /* Bank B */
  55};
  56
  57enum pkt_vec {
  58        PKT_VEC_PKT_LEN         = 0,
  59        PKT_VEC_PKT_PTR         = 2,
  60        PKT_VEC_QSEL_SET        = 4,
  61        PKT_VEC_QSEL_VAL        = 6,
  62};
  63
  64#define PKT_VEL_QSEL_SET_BIT    4
  65
  66#define pv_len(np)      reg_lm(1, PKT_VEC_PKT_LEN)
  67#define pv_ctm_ptr(np)  reg_lm(1, PKT_VEC_PKT_PTR)
  68#define pv_qsel_set(np) reg_lm(1, PKT_VEC_QSEL_SET)
  69#define pv_qsel_val(np) reg_lm(1, PKT_VEC_QSEL_VAL)
  70
  71#define stack_reg(np)   reg_a(STATIC_REG_STACK)
  72#define stack_imm(np)   imm_b(np)
  73#define plen_reg(np)    reg_b(STATIC_REG_PKT_LEN)
  74#define pptr_reg(np)    pv_ctm_ptr(np)
  75#define imm_a(np)       reg_a(STATIC_REG_IMM)
  76#define imm_b(np)       reg_b(STATIC_REG_IMM)
  77#define imma_a(np)      reg_a(STATIC_REG_IMMA)
  78#define imma_b(np)      reg_b(STATIC_REG_IMMA)
  79#define imm_both(np)    reg_both(STATIC_REG_IMM)
  80#define ret_reg(np)     imm_a(np)
  81
  82#define NFP_BPF_ABI_FLAGS       reg_imm(0)
  83#define   NFP_BPF_ABI_FLAG_MARK 1
  84
  85/**
  86 * struct nfp_app_bpf - bpf app priv structure
  87 * @app:                backpointer to the app
  88 * @ccm:                common control message handler data
  89 *
  90 * @bpf_dev:            BPF offload device handle
  91 *
  92 * @cmsg_key_sz:        size of key in cmsg element array
  93 * @cmsg_val_sz:        size of value in cmsg element array
  94 *
  95 * @map_list:           list of offloaded maps
  96 * @maps_in_use:        number of currently offloaded maps
  97 * @map_elems_in_use:   number of elements allocated to offloaded maps
  98 *
  99 * @maps_neutral:       hash table of offload-neutral maps (on pointer)
 100 *
 101 * @abi_version:        global BPF ABI version
 102 * @cmsg_cache_cnt:     number of entries to read for caching
 103 *
 104 * @adjust_head:        adjust head capability
 105 * @adjust_head.flags:          extra flags for adjust head
 106 * @adjust_head.off_min:        minimal packet offset within buffer required
 107 * @adjust_head.off_max:        maximum packet offset within buffer required
 108 * @adjust_head.guaranteed_sub: negative adjustment guaranteed possible
 109 * @adjust_head.guaranteed_add: positive adjustment guaranteed possible
 110 *
 111 * @maps:               map capability
 112 * @maps.types:                 supported map types
 113 * @maps.max_maps:              max number of maps supported
 114 * @maps.max_elems:             max number of entries in each map
 115 * @maps.max_key_sz:            max size of map key
 116 * @maps.max_val_sz:            max size of map value
 117 * @maps.max_elem_sz:           max size of map entry (key + value)
 118 *
 119 * @helpers:            helper addressess for various calls
 120 * @helpers.map_lookup:         map lookup helper address
 121 * @helpers.map_update:         map update helper address
 122 * @helpers.map_delete:         map delete helper address
 123 * @helpers.perf_event_output:  output perf event to a ring buffer
 124 *
 125 * @pseudo_random:      FW initialized the pseudo-random machinery (CSRs)
 126 * @queue_select:       BPF can set the RX queue ID in packet vector
 127 * @adjust_tail:        BPF can simply trunc packet size for adjust tail
 128 * @cmsg_multi_ent:     FW can pack multiple map entries in a single cmsg
 129 */
 130struct nfp_app_bpf {
 131        struct nfp_app *app;
 132        struct nfp_ccm ccm;
 133
 134        struct bpf_offload_dev *bpf_dev;
 135
 136        unsigned int cmsg_key_sz;
 137        unsigned int cmsg_val_sz;
 138
 139        unsigned int cmsg_cache_cnt;
 140
 141        struct list_head map_list;
 142        unsigned int maps_in_use;
 143        unsigned int map_elems_in_use;
 144
 145        struct rhashtable maps_neutral;
 146
 147        u32 abi_version;
 148
 149        struct nfp_bpf_cap_adjust_head {
 150                u32 flags;
 151                int off_min;
 152                int off_max;
 153                int guaranteed_sub;
 154                int guaranteed_add;
 155        } adjust_head;
 156
 157        struct {
 158                u32 types;
 159                u32 max_maps;
 160                u32 max_elems;
 161                u32 max_key_sz;
 162                u32 max_val_sz;
 163                u32 max_elem_sz;
 164        } maps;
 165
 166        struct {
 167                u32 map_lookup;
 168                u32 map_update;
 169                u32 map_delete;
 170                u32 perf_event_output;
 171        } helpers;
 172
 173        bool pseudo_random;
 174        bool queue_select;
 175        bool adjust_tail;
 176        bool cmsg_multi_ent;
 177};
 178
 179enum nfp_bpf_map_use {
 180        NFP_MAP_UNUSED = 0,
 181        NFP_MAP_USE_READ,
 182        NFP_MAP_USE_WRITE,
 183        NFP_MAP_USE_ATOMIC_CNT,
 184};
 185
 186struct nfp_bpf_map_word {
 187        unsigned char type              :4;
 188        unsigned char non_zero_update   :1;
 189};
 190
 191#define NFP_BPF_MAP_CACHE_CNT           4U
 192#define NFP_BPF_MAP_CACHE_TIME_NS       (250 * 1000)
 193
 194/**
 195 * struct nfp_bpf_map - private per-map data attached to BPF maps for offload
 196 * @offmap:     pointer to the offloaded BPF map
 197 * @bpf:        back pointer to bpf app private structure
 198 * @tid:        table id identifying map on datapath
 199 *
 200 * @cache_lock: protects @cache_blockers, @cache_to, @cache
 201 * @cache_blockers:     number of ops in flight which block caching
 202 * @cache_gen:  counter incremented by every blocker on exit
 203 * @cache_to:   time when cache will no longer be valid (ns)
 204 * @cache:      skb with cached response
 205 *
 206 * @l:          link on the nfp_app_bpf->map_list list
 207 * @use_map:    map of how the value is used (in 4B chunks)
 208 */
 209struct nfp_bpf_map {
 210        struct bpf_offloaded_map *offmap;
 211        struct nfp_app_bpf *bpf;
 212        u32 tid;
 213
 214        spinlock_t cache_lock;
 215        u32 cache_blockers;
 216        u32 cache_gen;
 217        u64 cache_to;
 218        struct sk_buff *cache;
 219
 220        struct list_head l;
 221        struct nfp_bpf_map_word use_map[];
 222};
 223
 224struct nfp_bpf_neutral_map {
 225        struct rhash_head l;
 226        struct bpf_map *ptr;
 227        u32 map_id;
 228        u32 count;
 229};
 230
 231extern const struct rhashtable_params nfp_bpf_maps_neutral_params;
 232
 233struct nfp_prog;
 234struct nfp_insn_meta;
 235typedef int (*instr_cb_t)(struct nfp_prog *, struct nfp_insn_meta *);
 236
 237#define nfp_prog_first_meta(nfp_prog)                                   \
 238        list_first_entry(&(nfp_prog)->insns, struct nfp_insn_meta, l)
 239#define nfp_prog_last_meta(nfp_prog)                                    \
 240        list_last_entry(&(nfp_prog)->insns, struct nfp_insn_meta, l)
 241#define nfp_meta_next(meta)     list_next_entry(meta, l)
 242#define nfp_meta_prev(meta)     list_prev_entry(meta, l)
 243
 244/**
 245 * struct nfp_bpf_reg_state - register state for calls
 246 * @reg: BPF register state from latest path
 247 * @var_off: for stack arg - changes stack offset on different paths
 248 */
 249struct nfp_bpf_reg_state {
 250        struct bpf_reg_state reg;
 251        bool var_off;
 252};
 253
 254#define FLAG_INSN_IS_JUMP_DST                   BIT(0)
 255#define FLAG_INSN_IS_SUBPROG_START              BIT(1)
 256#define FLAG_INSN_PTR_CALLER_STACK_FRAME        BIT(2)
 257/* Instruction is pointless, noop even on its own */
 258#define FLAG_INSN_SKIP_NOOP                     BIT(3)
 259/* Instruction is optimized out based on preceding instructions */
 260#define FLAG_INSN_SKIP_PREC_DEPENDENT           BIT(4)
 261/* Instruction is optimized by the verifier */
 262#define FLAG_INSN_SKIP_VERIFIER_OPT             BIT(5)
 263/* Instruction needs to zero extend to high 32-bit */
 264#define FLAG_INSN_DO_ZEXT                       BIT(6)
 265
 266#define FLAG_INSN_SKIP_MASK             (FLAG_INSN_SKIP_NOOP | \
 267                                         FLAG_INSN_SKIP_PREC_DEPENDENT | \
 268                                         FLAG_INSN_SKIP_VERIFIER_OPT)
 269
 270/**
 271 * struct nfp_insn_meta - BPF instruction wrapper
 272 * @insn: BPF instruction
 273 * @ptr: pointer type for memory operations
 274 * @ldst_gather_len: memcpy length gathered from load/store sequence
 275 * @paired_st: the paired store insn at the head of the sequence
 276 * @ptr_not_const: pointer is not always constant
 277 * @pkt_cache: packet data cache information
 278 * @pkt_cache.range_start: start offset for associated packet data cache
 279 * @pkt_cache.range_end: end offset for associated packet data cache
 280 * @pkt_cache.do_init: this read needs to initialize packet data cache
 281 * @xadd_over_16bit: 16bit immediate is not guaranteed
 282 * @xadd_maybe_16bit: 16bit immediate is possible
 283 * @jmp_dst: destination info for jump instructions
 284 * @jump_neg_op: jump instruction has inverted immediate, use ADD instead of SUB
 285 * @num_insns_after_br: number of insns following a branch jump, used for fixup
 286 * @func_id: function id for call instructions
 287 * @arg1: arg1 for call instructions
 288 * @arg2: arg2 for call instructions
 289 * @umin_src: copy of core verifier umin_value for src opearnd.
 290 * @umax_src: copy of core verifier umax_value for src operand.
 291 * @umin_dst: copy of core verifier umin_value for dst opearnd.
 292 * @umax_dst: copy of core verifier umax_value for dst operand.
 293 * @off: index of first generated machine instruction (in nfp_prog.prog)
 294 * @n: eBPF instruction number
 295 * @flags: eBPF instruction extra optimization flags
 296 * @subprog_idx: index of subprogram to which the instruction belongs
 297 * @double_cb: callback for second part of the instruction
 298 * @l: link on nfp_prog->insns list
 299 */
 300struct nfp_insn_meta {
 301        struct bpf_insn insn;
 302        union {
 303                /* pointer ops (ld/st/xadd) */
 304                struct {
 305                        struct bpf_reg_state ptr;
 306                        struct bpf_insn *paired_st;
 307                        s16 ldst_gather_len;
 308                        bool ptr_not_const;
 309                        struct {
 310                                s16 range_start;
 311                                s16 range_end;
 312                                bool do_init;
 313                        } pkt_cache;
 314                        bool xadd_over_16bit;
 315                        bool xadd_maybe_16bit;
 316                };
 317                /* jump */
 318                struct {
 319                        struct nfp_insn_meta *jmp_dst;
 320                        bool jump_neg_op;
 321                        u32 num_insns_after_br; /* only for BPF-to-BPF calls */
 322                };
 323                /* function calls */
 324                struct {
 325                        u32 func_id;
 326                        struct bpf_reg_state arg1;
 327                        struct nfp_bpf_reg_state arg2;
 328                };
 329                /* We are interested in range info for operands of ALU
 330                 * operations. For example, shift amount, multiplicand and
 331                 * multiplier etc.
 332                 */
 333                struct {
 334                        u64 umin_src;
 335                        u64 umax_src;
 336                        u64 umin_dst;
 337                        u64 umax_dst;
 338                };
 339        };
 340        unsigned int off;
 341        unsigned short n;
 342        unsigned short flags;
 343        unsigned short subprog_idx;
 344        instr_cb_t double_cb;
 345
 346        struct list_head l;
 347};
 348
 349#define BPF_SIZE_MASK   0x18
 350
 351static inline u8 mbpf_class(const struct nfp_insn_meta *meta)
 352{
 353        return BPF_CLASS(meta->insn.code);
 354}
 355
 356static inline u8 mbpf_src(const struct nfp_insn_meta *meta)
 357{
 358        return BPF_SRC(meta->insn.code);
 359}
 360
 361static inline u8 mbpf_op(const struct nfp_insn_meta *meta)
 362{
 363        return BPF_OP(meta->insn.code);
 364}
 365
 366static inline u8 mbpf_mode(const struct nfp_insn_meta *meta)
 367{
 368        return BPF_MODE(meta->insn.code);
 369}
 370
 371static inline bool is_mbpf_alu(const struct nfp_insn_meta *meta)
 372{
 373        return mbpf_class(meta) == BPF_ALU64 || mbpf_class(meta) == BPF_ALU;
 374}
 375
 376static inline bool is_mbpf_load(const struct nfp_insn_meta *meta)
 377{
 378        return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_LDX | BPF_MEM);
 379}
 380
 381static inline bool is_mbpf_jmp32(const struct nfp_insn_meta *meta)
 382{
 383        return mbpf_class(meta) == BPF_JMP32;
 384}
 385
 386static inline bool is_mbpf_jmp64(const struct nfp_insn_meta *meta)
 387{
 388        return mbpf_class(meta) == BPF_JMP;
 389}
 390
 391static inline bool is_mbpf_jmp(const struct nfp_insn_meta *meta)
 392{
 393        return is_mbpf_jmp32(meta) || is_mbpf_jmp64(meta);
 394}
 395
 396static inline bool is_mbpf_store(const struct nfp_insn_meta *meta)
 397{
 398        return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_STX | BPF_MEM);
 399}
 400
 401static inline bool is_mbpf_load_pkt(const struct nfp_insn_meta *meta)
 402{
 403        return is_mbpf_load(meta) && meta->ptr.type == PTR_TO_PACKET;
 404}
 405
 406static inline bool is_mbpf_store_pkt(const struct nfp_insn_meta *meta)
 407{
 408        return is_mbpf_store(meta) && meta->ptr.type == PTR_TO_PACKET;
 409}
 410
 411static inline bool is_mbpf_classic_load(const struct nfp_insn_meta *meta)
 412{
 413        u8 code = meta->insn.code;
 414
 415        return BPF_CLASS(code) == BPF_LD &&
 416               (BPF_MODE(code) == BPF_ABS || BPF_MODE(code) == BPF_IND);
 417}
 418
 419static inline bool is_mbpf_classic_store(const struct nfp_insn_meta *meta)
 420{
 421        u8 code = meta->insn.code;
 422
 423        return BPF_CLASS(code) == BPF_ST && BPF_MODE(code) == BPF_MEM;
 424}
 425
 426static inline bool is_mbpf_classic_store_pkt(const struct nfp_insn_meta *meta)
 427{
 428        return is_mbpf_classic_store(meta) && meta->ptr.type == PTR_TO_PACKET;
 429}
 430
 431static inline bool is_mbpf_atomic(const struct nfp_insn_meta *meta)
 432{
 433        return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_STX | BPF_ATOMIC);
 434}
 435
 436static inline bool is_mbpf_mul(const struct nfp_insn_meta *meta)
 437{
 438        return is_mbpf_alu(meta) && mbpf_op(meta) == BPF_MUL;
 439}
 440
 441static inline bool is_mbpf_div(const struct nfp_insn_meta *meta)
 442{
 443        return is_mbpf_alu(meta) && mbpf_op(meta) == BPF_DIV;
 444}
 445
 446static inline bool is_mbpf_cond_jump(const struct nfp_insn_meta *meta)
 447{
 448        u8 op;
 449
 450        if (is_mbpf_jmp32(meta))
 451                return true;
 452
 453        if (!is_mbpf_jmp64(meta))
 454                return false;
 455
 456        op = mbpf_op(meta);
 457        return op != BPF_JA && op != BPF_EXIT && op != BPF_CALL;
 458}
 459
 460static inline bool is_mbpf_helper_call(const struct nfp_insn_meta *meta)
 461{
 462        struct bpf_insn insn = meta->insn;
 463
 464        return insn.code == (BPF_JMP | BPF_CALL) &&
 465                insn.src_reg != BPF_PSEUDO_CALL;
 466}
 467
 468static inline bool is_mbpf_pseudo_call(const struct nfp_insn_meta *meta)
 469{
 470        struct bpf_insn insn = meta->insn;
 471
 472        return insn.code == (BPF_JMP | BPF_CALL) &&
 473                insn.src_reg == BPF_PSEUDO_CALL;
 474}
 475
 476#define STACK_FRAME_ALIGN 64
 477
 478/**
 479 * struct nfp_bpf_subprog_info - nfp BPF sub-program (a.k.a. function) info
 480 * @stack_depth:        maximum stack depth used by this sub-program
 481 * @needs_reg_push:     whether sub-program uses callee-saved registers
 482 */
 483struct nfp_bpf_subprog_info {
 484        u16 stack_depth;
 485        u8 needs_reg_push : 1;
 486};
 487
 488/**
 489 * struct nfp_prog - nfp BPF program
 490 * @bpf: backpointer to the bpf app priv structure
 491 * @prog: machine code
 492 * @prog_len: number of valid instructions in @prog array
 493 * @__prog_alloc_len: alloc size of @prog array
 494 * @stack_size: total amount of stack used
 495 * @verifier_meta: temporary storage for verifier's insn meta
 496 * @type: BPF program type
 497 * @last_bpf_off: address of the last instruction translated from BPF
 498 * @tgt_out: jump target for normal exit
 499 * @tgt_abort: jump target for abort (e.g. access outside of packet buffer)
 500 * @tgt_call_push_regs: jump target for subroutine for saving R6~R9 to stack
 501 * @tgt_call_pop_regs: jump target for subroutine used for restoring R6~R9
 502 * @n_translated: number of successfully translated instructions (for errors)
 503 * @error: error code if something went wrong
 504 * @stack_frame_depth: max stack depth for current frame
 505 * @adjust_head_location: if program has single adjust head call - the insn no.
 506 * @map_records_cnt: the number of map pointers recorded for this prog
 507 * @subprog_cnt: number of sub-programs, including main function
 508 * @map_records: the map record pointers from bpf->maps_neutral
 509 * @subprog: pointer to an array of objects holding info about sub-programs
 510 * @n_insns: number of instructions on @insns list
 511 * @insns: list of BPF instruction wrappers (struct nfp_insn_meta)
 512 */
 513struct nfp_prog {
 514        struct nfp_app_bpf *bpf;
 515
 516        u64 *prog;
 517        unsigned int prog_len;
 518        unsigned int __prog_alloc_len;
 519
 520        unsigned int stack_size;
 521
 522        struct nfp_insn_meta *verifier_meta;
 523
 524        enum bpf_prog_type type;
 525
 526        unsigned int last_bpf_off;
 527        unsigned int tgt_out;
 528        unsigned int tgt_abort;
 529        unsigned int tgt_call_push_regs;
 530        unsigned int tgt_call_pop_regs;
 531
 532        unsigned int n_translated;
 533        int error;
 534
 535        unsigned int stack_frame_depth;
 536        unsigned int adjust_head_location;
 537
 538        unsigned int map_records_cnt;
 539        unsigned int subprog_cnt;
 540        struct nfp_bpf_neutral_map **map_records;
 541        struct nfp_bpf_subprog_info *subprog;
 542
 543        unsigned int n_insns;
 544        struct list_head insns;
 545};
 546
 547/**
 548 * struct nfp_bpf_vnic - per-vNIC BPF priv structure
 549 * @tc_prog:    currently loaded cls_bpf program
 550 * @start_off:  address of the first instruction in the memory
 551 * @tgt_done:   jump target to get the next packet
 552 */
 553struct nfp_bpf_vnic {
 554        struct bpf_prog *tc_prog;
 555        unsigned int start_off;
 556        unsigned int tgt_done;
 557};
 558
 559bool nfp_is_subprog_start(struct nfp_insn_meta *meta);
 560void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog);
 561int nfp_bpf_jit(struct nfp_prog *prog);
 562bool nfp_bpf_supported_opcode(u8 code);
 563
 564int nfp_verify_insn(struct bpf_verifier_env *env, int insn_idx,
 565                    int prev_insn_idx);
 566int nfp_bpf_finalize(struct bpf_verifier_env *env);
 567
 568int nfp_bpf_opt_replace_insn(struct bpf_verifier_env *env, u32 off,
 569                             struct bpf_insn *insn);
 570int nfp_bpf_opt_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
 571
 572extern const struct bpf_prog_offload_ops nfp_bpf_dev_ops;
 573
 574struct netdev_bpf;
 575struct nfp_app;
 576struct nfp_net;
 577
 578int nfp_ndo_bpf(struct nfp_app *app, struct nfp_net *nn,
 579                struct netdev_bpf *bpf);
 580int nfp_net_bpf_offload(struct nfp_net *nn, struct bpf_prog *prog,
 581                        bool old_prog, struct netlink_ext_ack *extack);
 582
 583struct nfp_insn_meta *
 584nfp_bpf_goto_meta(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
 585                  unsigned int insn_idx);
 586
 587void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv);
 588
 589unsigned int nfp_bpf_ctrl_cmsg_min_mtu(struct nfp_app_bpf *bpf);
 590unsigned int nfp_bpf_ctrl_cmsg_mtu(struct nfp_app_bpf *bpf);
 591unsigned int nfp_bpf_ctrl_cmsg_cache_cnt(struct nfp_app_bpf *bpf);
 592long long int
 593nfp_bpf_ctrl_alloc_map(struct nfp_app_bpf *bpf, struct bpf_map *map);
 594void
 595nfp_bpf_ctrl_free_map(struct nfp_app_bpf *bpf, struct nfp_bpf_map *nfp_map);
 596int nfp_bpf_ctrl_getfirst_entry(struct bpf_offloaded_map *offmap,
 597                                void *next_key);
 598int nfp_bpf_ctrl_update_entry(struct bpf_offloaded_map *offmap,
 599                              void *key, void *value, u64 flags);
 600int nfp_bpf_ctrl_del_entry(struct bpf_offloaded_map *offmap, void *key);
 601int nfp_bpf_ctrl_lookup_entry(struct bpf_offloaded_map *offmap,
 602                              void *key, void *value);
 603int nfp_bpf_ctrl_getnext_entry(struct bpf_offloaded_map *offmap,
 604                               void *key, void *next_key);
 605
 606int nfp_bpf_event_output(struct nfp_app_bpf *bpf, const void *data,
 607                         unsigned int len);
 608
 609void nfp_bpf_ctrl_msg_rx(struct nfp_app *app, struct sk_buff *skb);
 610void
 611nfp_bpf_ctrl_msg_rx_raw(struct nfp_app *app, const void *data,
 612                        unsigned int len);
 613#endif
 614
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