sysctl.c 3.4 KB

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  1. /*
  2. * Copyright (c) 2006 Oracle. All rights reserved.
  3. *
  4. * This software is available to you under a choice of one of two
  5. * licenses. You may choose to be licensed under the terms of the GNU
  6. * General Public License (GPL) Version 2, available from the file
  7. * COPYING in the main directory of this source tree, or the
  8. * OpenIB.org BSD license below:
  9. *
  10. * Redistribution and use in source and binary forms, with or
  11. * without modification, are permitted provided that the following
  12. * conditions are met:
  13. *
  14. * - Redistributions of source code must retain the above
  15. * copyright notice, this list of conditions and the following
  16. * disclaimer.
  17. *
  18. * - Redistributions in binary form must reproduce the above
  19. * copyright notice, this list of conditions and the following
  20. * disclaimer in the documentation and/or other materials
  21. * provided with the distribution.
  22. *
  23. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30. * SOFTWARE.
  31. *
  32. */
  33. #include <linux/kernel.h>
  34. #include <linux/sysctl.h>
  35. #include <linux/proc_fs.h>
  36. #include "rds.h"
  37. static struct ctl_table_header *rds_sysctl_reg_table;
  38. static unsigned long rds_sysctl_reconnect_min = 1;
  39. static unsigned long rds_sysctl_reconnect_max = ~0UL;
  40. unsigned long rds_sysctl_reconnect_min_jiffies;
  41. unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
  42. unsigned int rds_sysctl_max_unacked_packets = 8;
  43. unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
  44. unsigned int rds_sysctl_ping_enable = 1;
  45. static struct ctl_table rds_sysctl_rds_table[] = {
  46. {
  47. .procname = "reconnect_min_delay_ms",
  48. .data = &rds_sysctl_reconnect_min_jiffies,
  49. .maxlen = sizeof(unsigned long),
  50. .mode = 0644,
  51. .proc_handler = proc_doulongvec_ms_jiffies_minmax,
  52. .extra1 = &rds_sysctl_reconnect_min,
  53. .extra2 = &rds_sysctl_reconnect_max_jiffies,
  54. },
  55. {
  56. .procname = "reconnect_max_delay_ms",
  57. .data = &rds_sysctl_reconnect_max_jiffies,
  58. .maxlen = sizeof(unsigned long),
  59. .mode = 0644,
  60. .proc_handler = proc_doulongvec_ms_jiffies_minmax,
  61. .extra1 = &rds_sysctl_reconnect_min_jiffies,
  62. .extra2 = &rds_sysctl_reconnect_max,
  63. },
  64. {
  65. .procname = "max_unacked_packets",
  66. .data = &rds_sysctl_max_unacked_packets,
  67. .maxlen = sizeof(int),
  68. .mode = 0644,
  69. .proc_handler = proc_dointvec,
  70. },
  71. {
  72. .procname = "max_unacked_bytes",
  73. .data = &rds_sysctl_max_unacked_bytes,
  74. .maxlen = sizeof(int),
  75. .mode = 0644,
  76. .proc_handler = proc_dointvec,
  77. },
  78. {
  79. .procname = "ping_enable",
  80. .data = &rds_sysctl_ping_enable,
  81. .maxlen = sizeof(int),
  82. .mode = 0644,
  83. .proc_handler = proc_dointvec,
  84. },
  85. { }
  86. };
  87. void rds_sysctl_exit(void)
  88. {
  89. unregister_net_sysctl_table(rds_sysctl_reg_table);
  90. }
  91. int rds_sysctl_init(void)
  92. {
  93. rds_sysctl_reconnect_min = msecs_to_jiffies(1);
  94. rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
  95. rds_sysctl_reg_table =
  96. register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
  97. if (!rds_sysctl_reg_table)
  98. return -ENOMEM;
  99. return 0;
  100. }