https://github.com/oskardrums/simbpf

A quick and compact Domain Specific Language for packet filtering under Linux with eBPF XDP programs
https://github.com/oskardrums/simbpf

bpf compiler programming-language xdp

Last synced: 9 days ago
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A quick and compact Domain Specific Language for packet filtering under Linux with eBPF XDP programs

• Host: GitHub
• URL: https://github.com/oskardrums/simbpf
• Owner: oskardrums
• License: mit
• Created: 2020-11-08T08:52:45.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2020-11-18T07:50:04.000Z (almost 4 years ago)
• Last Synced: 2023-03-09T03:41:45.182Z (over 1 year ago)
• Topics: bpf, compiler, programming-language, xdp
• Language: C
• Homepage:
• Size: 170 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# simbpf

## Showcase:

Source code is quite compact and intuitive:

```

user@host:~/simbpf/src$ cat ../examples/arp_or_udp.sb

u16@12: =0x0806 -> pass;

        =0x0800 -> u8@23: =17 -> pass.

 ```

 Generated eBPF code is quite efficient:

 ```

user@host:~/simbpf/src$ ./simbpf -c ../examples/arp_or_udp.sb 

30/64

0:	0x61, 8, 1, 0, 0

1:	0x61, 9, 1, 4, 0

2:	0xb7, 0, 0, 0, 1

3:	0xbf, 2, 8, 0, 0

4:	0x07, 2, 0, 0, 14

5:	0x2d, 2, 9, 23, 0

6:	0x69, 0, 8, 12, 0

7:	0xbf, 7, 0, 0, 0

8:	0xb7, 0, 0, 0, 2054

9:	0x1d, 7, 0, 4, 0

10:	0xb7, 0, 0, 0, 2048

11:	0x1d, 7, 0, 4, 0

12:	0xb7, 0, 0, 0, 1

13:	0x05, 0, 0, 15, 0

14:	0xb7, 0, 0, 0, 2

15:	0x05, 0, 0, 13, 0

16:	0xbf, 2, 8, 0, 0

17:	0x07, 2, 0, 0, 24

18:	0x2d, 2, 9, 10, 0

19:	0x05, 0, 0, 9, 0

20:	0x71, 0, 8, 23, 0

21:	0xbf, 7, 0, 0, 0

22:	0xb7, 0, 0, 0, 17

23:	0x1d, 7, 0, 2, 0

24:	0xb7, 0, 0, 0, 1

25:	0x05, 0, 0, 3, 0

26:	0xb7, 0, 0, 0, 2

27:	0x05, 0, 0, 1, 0

28:	0x05, 0, 0, 0, 0

29:	0x95, 0, 0, 0, 0

```

Compilation times are quite fast:

```

user@host:~/simbpf/src$ time ./simbpf -c ../examples/arp_or_udp.sb

30/64

0:      0x61, 8, 1, 0, 0

.

.

.

29:     0x95, 0, 0, 0, 0

real    0m0.004s

user    0m0.003s

sys     0m0.001s

```