varun-r-mallya/python-bpf
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members generated for simple ctypes

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varun-r-mallya
2025-10-18 21:45:26 +05:30
parent 3a3116253f
commit 101183c315
3 changed files with 177 additions and 29 deletions
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20
tests/passing_tests/vmlinux/xdp_pass.py
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@ -3,7 +3,7 @@ from pythonbpf.maps import HashMap
from pythonbpf.helper import XDP_PASS
from vmlinux import TASK_COMM_LEN # noqa: F401
from vmlinux import struct_xdp_md
from vmlinux import struct_trace_event_raw_sys_enter # noqa: F401
# from vmlinux import struct_trace_event_raw_sys_enter # noqa: F401
from ctypes import c_int64
# Instructions to how to run this program
@ -13,27 +13,9 @@ from ctypes import c_int64
# 4. Attach object file to any network device with something like ./check.sh xdp examples/xdp_pass.o tailscale0
# 5. send traffic through the device and observe effects
@bpf
@map
def count() -> HashMap:
return HashMap(key=c_int64, value=c_int64, max_entries=1)
@bpf
@section("xdp")
def hello_world(ctx: struct_xdp_md) -> c_int64:
key = 0
one = 1
prev = count().lookup(key)
if prev:
prevval = prev + 1
print(f"count: {prevval}")
count().update(key, prevval)
return XDP_PASS
else:
count().update(key, one)
return XDP_PASS