diag.c 1.7 KB

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  1. /*
  2. * net/dccp/diag.c
  3. *
  4. * An implementation of the DCCP protocol
  5. * Arnaldo Carvalho de Melo <acme@mandriva.com>
  6. *
  7. * This program is free software; you can redistribute it and/or modify it
  8. * under the terms of the GNU General Public License version 2 as
  9. * published by the Free Software Foundation.
  10. */
  11. #include <linux/module.h>
  12. #include <linux/inet_diag.h>
  13. #include "ccid.h"
  14. #include "dccp.h"
  15. static void dccp_get_info(struct sock *sk, struct tcp_info *info)
  16. {
  17. struct dccp_sock *dp = dccp_sk(sk);
  18. const struct inet_connection_sock *icsk = inet_csk(sk);
  19. memset(info, 0, sizeof(*info));
  20. info->tcpi_state = sk->sk_state;
  21. info->tcpi_retransmits = icsk->icsk_retransmits;
  22. info->tcpi_probes = icsk->icsk_probes_out;
  23. info->tcpi_backoff = icsk->icsk_backoff;
  24. info->tcpi_pmtu = icsk->icsk_pmtu_cookie;
  25. if (dccp_msk(sk)->dccpms_send_ack_vector)
  26. info->tcpi_options |= TCPI_OPT_SACK;
  27. ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
  28. ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
  29. }
  30. static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
  31. void *_info)
  32. {
  33. r->idiag_rqueue = r->idiag_wqueue = 0;
  34. if (_info != NULL)
  35. dccp_get_info(sk, _info);
  36. }
  37. static struct inet_diag_handler dccp_diag_handler = {
  38. .idiag_hashinfo = &dccp_hashinfo,
  39. .idiag_get_info = dccp_diag_get_info,
  40. .idiag_type = DCCPDIAG_GETSOCK,
  41. .idiag_info_size = sizeof(struct tcp_info),
  42. };
  43. static int __init dccp_diag_init(void)
  44. {
  45. return inet_diag_register(&dccp_diag_handler);
  46. }
  47. static void __exit dccp_diag_fini(void)
  48. {
  49. inet_diag_unregister(&dccp_diag_handler);
  50. }
  51. module_init(dccp_diag_init);
  52. module_exit(dccp_diag_fini);
  53. MODULE_LICENSE("GPL");
  54. MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
  55. MODULE_DESCRIPTION("DCCP inet_diag handler");