On Thu, 17 Nov 2011, Gao feng wrote:
> I has a question about the tcp reopen request in func tcp_in_window.
> The code is below,what confuse me is that the var end is never after sender->td_end.
>
> static int tcp_in_window(struct ip_ct_tcp *state,
> ...
> if (sender->td_end == 0) {
> ...
> } else if (((state->state == TCP_CONNTRACK_SYN_SENT
> && dir == IP_CT_DIR_ORIGINAL)
> || (state->state == TCP_CONNTRACK_SYN_RECV
> && dir == IP_CT_DIR_REPLY))
> && after(end, sender->td_end)) {
>
> ...
> }
> ...
> }
>
>
> When nf_conn rcv a syn request in TIME_WAIT state,the new_state is SYN_SNET.
> in func tcp_packet, this nf_conn will be kill by nf_ct_kill and the syn packet will repeat.
No, the connection entry won't be destroyed by nf_ct_kill. Why do you
think so?
> So we will have a new nf_conn,whose sender->td_end is reset in func tcp_new.
>
> finally,when this syn packet arrive tcp_in_window,the var end is equal to sender->td_end.
>
> Maybe there is the other situation Or what I understand is totally wrong?
Best regards,
Jozsef
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