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由 Petar Penkov 提交于
This helper function allows BPF programs to try to generate SYN cookies, given a reference to a listener socket. The function works from XDP and with an skb context since bpf_skc_lookup_tcp can lookup a socket in both cases. Signed-off-by: NPetar Penkov <ppenkov@google.com> Suggested-by: NEric Dumazet <edumazet@google.com> Reviewed-by: NLorenz Bauer <lmb@cloudflare.com> Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
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