root/drivers/net/ethernet/netronome/nfp/bpf/main.h

INCLUDED FROM

DEFINITIONS

1. mbpf_class
2. mbpf_src
3. mbpf_op
4. mbpf_mode
5. is_mbpf_alu
6. is_mbpf_load
7. is_mbpf_jmp32
8. is_mbpf_jmp64
9. is_mbpf_jmp
10. is_mbpf_store
11. is_mbpf_load_pkt
12. is_mbpf_store_pkt
13. is_mbpf_classic_load
14. is_mbpf_classic_store
15. is_mbpf_classic_store_pkt
16. is_mbpf_xadd
17. is_mbpf_mul
18. is_mbpf_div
19. is_mbpf_cond_jump
20. is_mbpf_helper_call
21. is_mbpf_pseudo_call

   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 
  28 enum 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 
  50 enum 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 
  57 enum 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  */
 130 struct 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 
 179 enum 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 
 186 struct 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  */
 209 struct 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 
 224 struct nfp_bpf_neutral_map {
 225         struct rhash_head l;
 226         struct bpf_map *ptr;
 227         u32 map_id;
 228         u32 count;
 229 };
 230 
 231 extern const struct rhashtable_params nfp_bpf_maps_neutral_params;
 232 
 233 struct nfp_prog;
 234 struct nfp_insn_meta;
 235 typedef 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  */
 249 struct 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  */
 300 struct 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 
 351 static inline u8 mbpf_class(const struct nfp_insn_meta *meta)
 352 {
 353         return BPF_CLASS(meta->insn.code);
 354 }
 355 
 356 static inline u8 mbpf_src(const struct nfp_insn_meta *meta)
 357 {
 358         return BPF_SRC(meta->insn.code);
 359 }
 360 
 361 static inline u8 mbpf_op(const struct nfp_insn_meta *meta)
 362 {
 363         return BPF_OP(meta->insn.code);
 364 }
 365 
 366 static inline u8 mbpf_mode(const struct nfp_insn_meta *meta)
 367 {
 368         return BPF_MODE(meta->insn.code);
 369 }
 370 
 371 static 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 
 376 static 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 
 381 static inline bool is_mbpf_jmp32(const struct nfp_insn_meta *meta)
 382 {
 383         return mbpf_class(meta) == BPF_JMP32;
 384 }
 385 
 386 static inline bool is_mbpf_jmp64(const struct nfp_insn_meta *meta)
 387 {
 388         return mbpf_class(meta) == BPF_JMP;
 389 }
 390 
 391 static inline bool is_mbpf_jmp(const struct nfp_insn_meta *meta)
 392 {
 393         return is_mbpf_jmp32(meta) || is_mbpf_jmp64(meta);
 394 }
 395 
 396 static 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 
 401 static 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 
 406 static 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 
 411 static 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 
 419 static 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 
 426 static 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 
 431 static inline bool is_mbpf_xadd(const struct nfp_insn_meta *meta)
 432 {
 433         return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_STX | BPF_XADD);
 434 }
 435 
 436 static 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 
 441 static 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 
 446 static 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 
 460 static 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 
 468 static 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  */
 483 struct 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  */
 513 struct 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  */
 553 struct nfp_bpf_vnic {
 554         struct bpf_prog *tc_prog;
 555         unsigned int start_off;
 556         unsigned int tgt_done;
 557 };
 558 
 559 bool nfp_is_subprog_start(struct nfp_insn_meta *meta);
 560 void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog);
 561 int nfp_bpf_jit(struct nfp_prog *prog);
 562 bool nfp_bpf_supported_opcode(u8 code);
 563 
 564 int nfp_verify_insn(struct bpf_verifier_env *env, int insn_idx,
 565                     int prev_insn_idx);
 566 int nfp_bpf_finalize(struct bpf_verifier_env *env);
 567 
 568 int nfp_bpf_opt_replace_insn(struct bpf_verifier_env *env, u32 off,
 569                              struct bpf_insn *insn);
 570 int nfp_bpf_opt_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
 571 
 572 extern const struct bpf_prog_offload_ops nfp_bpf_dev_ops;
 573 
 574 struct netdev_bpf;
 575 struct nfp_app;
 576 struct nfp_net;
 577 
 578 int nfp_ndo_bpf(struct nfp_app *app, struct nfp_net *nn,
 579                 struct netdev_bpf *bpf);
 580 int nfp_net_bpf_offload(struct nfp_net *nn, struct bpf_prog *prog,
 581                         bool old_prog, struct netlink_ext_ack *extack);
 582 
 583 struct nfp_insn_meta *
 584 nfp_bpf_goto_meta(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
 585                   unsigned int insn_idx);
 586 
 587 void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv);
 588 
 589 unsigned int nfp_bpf_ctrl_cmsg_min_mtu(struct nfp_app_bpf *bpf);
 590 unsigned int nfp_bpf_ctrl_cmsg_mtu(struct nfp_app_bpf *bpf);
 591 unsigned int nfp_bpf_ctrl_cmsg_cache_cnt(struct nfp_app_bpf *bpf);
 592 long long int
 593 nfp_bpf_ctrl_alloc_map(struct nfp_app_bpf *bpf, struct bpf_map *map);
 594 void
 595 nfp_bpf_ctrl_free_map(struct nfp_app_bpf *bpf, struct nfp_bpf_map *nfp_map);
 596 int nfp_bpf_ctrl_getfirst_entry(struct bpf_offloaded_map *offmap,
 597                                 void *next_key);
 598 int nfp_bpf_ctrl_update_entry(struct bpf_offloaded_map *offmap,
 599                               void *key, void *value, u64 flags);
 600 int nfp_bpf_ctrl_del_entry(struct bpf_offloaded_map *offmap, void *key);
 601 int nfp_bpf_ctrl_lookup_entry(struct bpf_offloaded_map *offmap,
 602                               void *key, void *value);
 603 int nfp_bpf_ctrl_getnext_entry(struct bpf_offloaded_map *offmap,
 604                                void *key, void *next_key);
 605 
 606 int nfp_bpf_event_output(struct nfp_app_bpf *bpf, const void *data,
 607                          unsigned int len);
 608 
 609 void nfp_bpf_ctrl_msg_rx(struct nfp_app *app, struct sk_buff *skb);
 610 void
 611 nfp_bpf_ctrl_msg_rx_raw(struct nfp_app *app, const void *data,
 612                         unsigned int len);
 613 #endif