bpf: add bpf_set_hash helper for tc progs

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Allow for tc BPF programs to set a skb->hash, apart from clearing
and triggering a recalc that we have right now. It allows for BPF
to implement a custom hashing routine for skb_get_hash().

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Daniel Borkmann 2017-06-11 00:50:47 +02:00 • committed by David S. Miller

parent 966789fb86

commit ded092cd73

3 changed files with 34 additions and 2 deletions

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8

include/uapi/linux/bpf.h

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