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bsp; if (!th->ack ||
23. !after(TCP_SKB_CB(skb)->end_seq, tcptw->tw_rcv_nxt) ||
24. TCP_SKB_CB(skb)->end_seq == TCP_SKB_CB(skb)->seq) {
25. inet_twsk_put(tw);
26. return TCP_TW_SUCCESS;
27. }
28.
29.
30. /* New data or FIN. If new data arrive after half-duplex close,
31. * reset.
32. */
33. if (!th->fin ||
34. TCP_SKB_CB(skb)->end_seq != tcptw->tw_rcv_nxt + 1) {
35.kill_with_rst:
36. inet_twsk_deschedule(tw, &tcp_death_row);
37. inet_twsk_put(tw);
38. return TCP_TW_RST;
39. }
40.
41.
42. /* FIN arrived, enter true time-wait state. */
43. tw->tw_substate = TCP_TIME_WAIT;
44. tcptw->tw_rcv_nxt = TCP_SKB_CB(skb)->end_seq;
45. if (tmp_opt.saw_tstamp) {
46. tcptw->tw_ts_recent_stamp = get_seconds();
47. tcptw->tw_ts_recent = tmp_opt.rcv_tsval;
48. }
49.
50.
51. /* I am shamed, but failed to make it more elegant.
52. * Yes, it is direct reference to IP, which is impossible
53. * to generalize to IPv6. Taking into account that IPv6
54. * do not understand recycling in any case, it not
55. * a big problem in practice. --ANK */
56. if (tw->tw_family == AF_INET &&
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