lib/librte_bpf/bpf_impl.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4
   5 #ifndef _BPF_H_
   6 #define _BPF_H_
   7
   8 #include <rte_bpf.h>
   9 #include <sys/mman.h>
  10
  11 #ifdef __cplusplus
  12 extern "C" {
  13 #endif
  14
  15 #define MAX_BPF_STACK_SIZE      0x200
  16
  17 struct rte_bpf {
  18         struct rte_bpf_prm prm;
  19         struct rte_bpf_jit jit;
  20         size_t sz;
  21         uint32_t stack_sz;
  22 };
  23
  24 extern int bpf_validate(struct rte_bpf *bpf);
  25
  26 extern int bpf_jit(struct rte_bpf *bpf);
  27
  28 extern int bpf_jit_x86(struct rte_bpf *);
  29 extern int bpf_jit_arm64(struct rte_bpf *);
  30
  31 extern int rte_bpf_logtype;
  32
  33 #define RTE_BPF_LOG(lvl, fmt, args...) \
  34         rte_log(RTE_LOG_## lvl, rte_bpf_logtype, fmt, ##args)
  35
  36 static inline size_t
  37 bpf_size(uint32_t bpf_op_sz)
  38 {
  39         if (bpf_op_sz == BPF_B)
  40                 return sizeof(uint8_t);
  41         else if (bpf_op_sz == BPF_H)
  42                 return sizeof(uint16_t);
  43         else if (bpf_op_sz == BPF_W)
  44                 return sizeof(uint32_t);
  45         else if (bpf_op_sz == EBPF_DW)
  46                 return sizeof(uint64_t);
  47         return 0;
  48 }
  49
  50 #ifdef __cplusplus
  51 }
  52 #endif
  53
  54 #endif /* _BPF_H_ */