ceph/src/seastar/dpdk/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 #ifdef RTE_ARCH_X86_64
  29 extern int bpf_jit_x86(struct rte_bpf *);
  30 #endif
  31
  32 extern int rte_bpf_logtype;
  33
  34 #define RTE_BPF_LOG(lvl, fmt, args...) \
  35         rte_log(RTE_LOG_## lvl, rte_bpf_logtype, fmt, ##args)
  36
  37 static inline size_t
  38 bpf_size(uint32_t bpf_op_sz)
  39 {
  40         if (bpf_op_sz == BPF_B)
  41                 return sizeof(uint8_t);
  42         else if (bpf_op_sz == BPF_H)
  43                 return sizeof(uint16_t);
  44         else if (bpf_op_sz == BPF_W)
  45                 return sizeof(uint32_t);
  46         else if (bpf_op_sz == EBPF_DW)
  47                 return sizeof(uint64_t);
  48         return 0;
  49 }
  50
  51 #ifdef __cplusplus
  52 }
  53 #endif
  54
  55 #endif /* _BPF_H_ */