connector.h 2.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
  2. /*
  3. * connector.h
  4. *
  5. * 2004-2005 Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
  6. * All rights reserved.
  7. *
  8. * This program is free software; you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License as published by
  10. * the Free Software Foundation; either version 2 of the License, or
  11. * (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21. */
  22. #ifndef __CONNECTOR_H
  23. #define __CONNECTOR_H
  24. #include <linux/types.h>
  25. /*
  26. * Process Events connector unique ids -- used for message routing
  27. */
  28. #define CN_IDX_PROC 0x1
  29. #define CN_VAL_PROC 0x1
  30. #define CN_IDX_CIFS 0x2
  31. #define CN_VAL_CIFS 0x1
  32. #define CN_W1_IDX 0x3 /* w1 communication */
  33. #define CN_W1_VAL 0x1
  34. #define CN_IDX_V86D 0x4
  35. #define CN_VAL_V86D_UVESAFB 0x1
  36. #define CN_IDX_BB 0x5 /* BlackBoard, from the TSP GPL sampling framework */
  37. #define CN_DST_IDX 0x6
  38. #define CN_DST_VAL 0x1
  39. #define CN_IDX_DM 0x7 /* Device Mapper */
  40. #define CN_VAL_DM_USERSPACE_LOG 0x1
  41. #define CN_IDX_DRBD 0x8
  42. #define CN_VAL_DRBD 0x1
  43. #define CN_KVP_IDX 0x9 /* HyperV KVP */
  44. #define CN_KVP_VAL 0x1 /* queries from the kernel */
  45. #define CN_VSS_IDX 0xA /* HyperV VSS */
  46. #define CN_VSS_VAL 0x1 /* queries from the kernel */
  47. #define CN_NETLINK_USERS 11 /* Highest index + 1 */
  48. /*
  49. * Maximum connector's message size.
  50. */
  51. #define CONNECTOR_MAX_MSG_SIZE 16384
  52. /*
  53. * idx and val are unique identifiers which
  54. * are used for message routing and
  55. * must be registered in connector.h for in-kernel usage.
  56. */
  57. struct cb_id {
  58. __u32 idx;
  59. __u32 val;
  60. };
  61. struct cn_msg {
  62. struct cb_id id;
  63. __u32 seq;
  64. __u32 ack;
  65. __u16 len; /* Length of the following data */
  66. __u16 flags;
  67. __u8 data[0];
  68. };
  69. #endif /* __CONNECTOR_H */