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_atomic(const struct nfp_insn_meta *meta)
432 {
433 	return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_STX | BPF_ATOMIC);
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 bool nfp_bpf_offload_check_mtu(struct nfp_net *nn, struct bpf_prog *prog,
564 			       unsigned int mtu);
565 
566 int nfp_verify_insn(struct bpf_verifier_env *env, int insn_idx,
567 		    int prev_insn_idx);
568 int nfp_bpf_finalize(struct bpf_verifier_env *env);
569 
570 int nfp_bpf_opt_replace_insn(struct bpf_verifier_env *env, u32 off,
571 			     struct bpf_insn *insn);
572 int nfp_bpf_opt_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
573 
574 extern const struct bpf_prog_offload_ops nfp_bpf_dev_ops;
575 
576 struct netdev_bpf;
577 struct nfp_app;
578 struct nfp_net;
579 
580 int nfp_ndo_bpf(struct nfp_app *app, struct nfp_net *nn,
581 		struct netdev_bpf *bpf);
582 int nfp_net_bpf_offload(struct nfp_net *nn, struct bpf_prog *prog,
583 			bool old_prog, struct netlink_ext_ack *extack);
584 
585 struct nfp_insn_meta *
586 nfp_bpf_goto_meta(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
587 		  unsigned int insn_idx);
588 
589 void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv);
590 
591 unsigned int nfp_bpf_ctrl_cmsg_min_mtu(struct nfp_app_bpf *bpf);
592 unsigned int nfp_bpf_ctrl_cmsg_mtu(struct nfp_app_bpf *bpf);
593 unsigned int nfp_bpf_ctrl_cmsg_cache_cnt(struct nfp_app_bpf *bpf);
594 long long int
595 nfp_bpf_ctrl_alloc_map(struct nfp_app_bpf *bpf, struct bpf_map *map);
596 void
597 nfp_bpf_ctrl_free_map(struct nfp_app_bpf *bpf, struct nfp_bpf_map *nfp_map);
598 int nfp_bpf_ctrl_getfirst_entry(struct bpf_offloaded_map *offmap,
599 				void *next_key);
600 int nfp_bpf_ctrl_update_entry(struct bpf_offloaded_map *offmap,
601 			      void *key, void *value, u64 flags);
602 int nfp_bpf_ctrl_del_entry(struct bpf_offloaded_map *offmap, void *key);
603 int nfp_bpf_ctrl_lookup_entry(struct bpf_offloaded_map *offmap,
604 			      void *key, void *value);
605 int nfp_bpf_ctrl_getnext_entry(struct bpf_offloaded_map *offmap,
606 			       void *key, void *next_key);
607 
608 int nfp_bpf_event_output(struct nfp_app_bpf *bpf, const void *data,
609 			 unsigned int len);
610 
611 void nfp_bpf_ctrl_msg_rx(struct nfp_app *app, struct sk_buff *skb);
612 void
613 nfp_bpf_ctrl_msg_rx_raw(struct nfp_app *app, const void *data,
614 			unsigned int len);
615 #endif
616