Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\syscall.c Create Date:2022-07-28 12:54:17
Last Modify:2022-05-19 18:06:12 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:bpf_insn_prepare_dump

Proto:static struct bpf_insn *bpf_insn_prepare_dump(const struct bpf_prog *prog)

Type:struct bpf_insn

Parameter:

TypeParameterName
const struct bpf_prog *prog
2408  insns = kmemdup(insnsi, bpf_prog_insn_size(prog), GFP_USER)
2410  If Not insns Then Return insns
2413  When i < Number of filter blocks cycle
2414  If opcode == (BPF_JMP | unused opcode to mark special call to bpf_tail_call() helper ) Then
2415  opcode = BPF_JMP | unction call
2416  signed immediate constant = BPF_FUNC_tail_call
2419  If opcode == (BPF_JMP | unction call ) || opcode == (BPF_JMP | unused opcode to mark call to interpreter with arguments ) Then
2421  If opcode == (BPF_JMP | unused opcode to mark call to interpreter with arguments ) Then opcode = BPF_JMP | unction call
2423  If Not bpf_dump_raw_ok() Then signed immediate constant = 0
2425  Continue
2428  If opcode != ( BPF_LD | BPF_IMM | double word (64-bit) ) Then Continue
2431  imm = signed immediate constant << 32 | signed immediate constant
2432  map = bpf_map_from_imm(prog, imm, & off, & type)
2433  If map Then
2434  source register = type
2435  signed immediate constant = id
2436  signed immediate constant = off
2437  Continue
2441  Return insns
Caller
NameDescribe
bpf_prog_get_info_by_fd