| #!/usr/bin/env python |
| # Copyright (c) PLUMgrid, Inc. |
| # Licensed under the Apache License, Version 2.0 (the "License") |
| |
| from bcc import BPF |
| from pyroute2 import IPRoute |
| |
| ipr = IPRoute() |
| |
| text = """ |
| int hello(struct __sk_buff *skb) { |
| return 1; |
| } |
| """ |
| |
| try: |
| b = BPF(text=text, debug=0) |
| fn = b.load_func("hello", BPF.SCHED_CLS) |
| ipr.link_create(ifname="t1a", kind="veth", peer="t1b") |
| idx = ipr.link_lookup(ifname="t1a")[0] |
| |
| ipr.tc("add", "ingress", idx, "ffff:") |
| ipr.tc("add-filter", "bpf", idx, ":1", fd=fn.fd, |
| name=fn.name, parent="ffff:", action="ok", classid=1) |
| ipr.tc("add", "sfq", idx, "1:") |
| ipr.tc("add-filter", "bpf", idx, ":1", fd=fn.fd, |
| name=fn.name, parent="1:", action="ok", classid=1) |
| finally: |
| if "idx" in locals(): ipr.link_remove(idx) |
| print("BPF tc functionality - SCHED_CLS: OK") |