drbd_genl_api.h 1.8 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef DRBD_GENL_STRUCT_H
  3. #define DRBD_GENL_STRUCT_H
  4. /**
  5. * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests
  6. * @minor:
  7. * For admin requests (user -> kernel): which minor device to operate on.
  8. * For (unicast) replies or informational (broadcast) messages
  9. * (kernel -> user): which minor device the information is about.
  10. * If we do not operate on minors, but on connections or resources,
  11. * the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT
  12. * is used instead.
  13. * @flags: possible operation modifiers (relevant only for user->kernel):
  14. * DRBD_GENL_F_SET_DEFAULTS
  15. * @volume:
  16. * When creating a new minor (adding it to a resource), the resource needs
  17. * to know which volume number within the resource this is supposed to be.
  18. * The volume number corresponds to the same volume number on the remote side,
  19. * whereas the minor number on the remote side may be different
  20. * (union with flags).
  21. * @ret_code: kernel->userland unicast cfg reply return code (union with flags);
  22. */
  23. struct drbd_genlmsghdr {
  24. __u32 minor;
  25. union {
  26. __u32 flags;
  27. __s32 ret_code;
  28. };
  29. };
  30. /* To be used in drbd_genlmsghdr.flags */
  31. enum {
  32. DRBD_GENL_F_SET_DEFAULTS = 1,
  33. };
  34. enum drbd_state_info_bcast_reason {
  35. SIB_GET_STATUS_REPLY = 1,
  36. SIB_STATE_CHANGE = 2,
  37. SIB_HELPER_PRE = 3,
  38. SIB_HELPER_POST = 4,
  39. SIB_SYNC_PROGRESS = 5,
  40. };
  41. /* hack around predefined gcc/cpp "linux=1",
  42. * we cannot possibly include <1/drbd_genl.h> */
  43. #undef linux
  44. #include <linux/drbd.h>
  45. #define GENL_MAGIC_VERSION API_VERSION
  46. #define GENL_MAGIC_FAMILY drbd
  47. #define GENL_MAGIC_FAMILY_HDRSZ sizeof(struct drbd_genlmsghdr)
  48. #define GENL_MAGIC_INCLUDE_FILE <linux/drbd_genl.h>
  49. #include <linux/genl_magic_struct.h>
  50. #endif