Re: [bpf-next] bpf: fix error check in bpf_tcp_gen_syncookie

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On 8/28/19 1:46 AM, Petar Penkov wrote:
From: Petar Penkov <ppenkov@xxxxxxxxxx>

If a SYN cookie is not issued by tcp_v#_gen_syncookie, then the return
value will be exactly 0, rather than <= 0. Let's change the check to
reflect that, especially since mss is an unsigned value and cannot be
negative.

Fixes: 70d66244317e ("bpf: add bpf_tcp_gen_syncookie helper")
Reported-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
Signed-off-by: Petar Penkov <ppenkov@xxxxxxxxxx>

Applied, thanks!



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