mirror of
https://github.com/xdp-project/bpf-examples.git
synced 2024-05-06 15:54:53 +00:00
26 lines
678 B
Org Mode
26 lines
678 B
Org Mode
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#+OPTIONS: ^:nil
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* BPF testing packet size changes
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Playing with increasing packet size with TC-BPF. Testing what happens when
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sending packets larger that MTU out an interface.
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* Notes loading BPF object
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How to manually load TC program:
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#+begin_src sh
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export DEV=mlx5p1
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tc qdisc del dev "$DEV" clsact # Also deletes all filters
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tc qdisc add dev "$DEV" clsact
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tc filter add dev "$DEV" pref 1 handle 1 egress bpf da obj tc_bpf_inc_pkt_size.o
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tc filter show dev "$DEV" egress
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#+end_src
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Be *VERY* careful with =replace= command, it MUST have same =pref= +=handle=:
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#+begin_src sh
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tc filter replace dev "$DEV" pref 1 handle 1 egress bpf da obj tc_bpf_inc_pkt_size.o
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#+end_src
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