LXR linux/include/linux/drbd_genl

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef DRBD_GENL_STRUCT_H
   3#define DRBD_GENL_STRUCT_H
   4
   5/**
   6 * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests
   7 * @minor:
   8 *     For admin requests (user -> kernel): which minor device to operate on.
   9 *     For (unicast) replies or informational (broadcast) messages
  10 *     (kernel -> user): which minor device the information is about.
  11 *     If we do not operate on minors, but on connections or resources,
  12 *     the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT
  13 *     is used instead.
  14 * @flags: possible operation modifiers (relevant only for user->kernel):
  15 *     DRBD_GENL_F_SET_DEFAULTS
  16 * @volume:
  17 *     When creating a new minor (adding it to a resource), the resource needs
  18 *     to know which volume number within the resource this is supposed to be.
  19 *     The volume number corresponds to the same volume number on the remote side,
  20 *     whereas the minor number on the remote side may be different
  21 *     (union with flags).
  22 * @ret_code: kernel->userland unicast cfg reply return code (union with flags);
  23 */
  24struct drbd_genlmsghdr {
  25        __u32 minor;
  26        union {
  27        __u32 flags;
  28        __s32 ret_code;
  29        };
  30};
  31
  32/* To be used in drbd_genlmsghdr.flags */
  33enum {
  34        DRBD_GENL_F_SET_DEFAULTS = 1,
  35};
  36
  37enum drbd_state_info_bcast_reason {
  38        SIB_GET_STATUS_REPLY = 1,
  39        SIB_STATE_CHANGE = 2,
  40        SIB_HELPER_PRE = 3,
  41        SIB_HELPER_POST = 4,
  42        SIB_SYNC_PROGRESS = 5,
  43};
  44
  45/* hack around predefined gcc/cpp "linux=1",
  46 * we cannot possibly include <1/drbd_genl.h> */
  47#undef linux
  48
  49#include <linux/drbd.h>
  50#define GENL_MAGIC_VERSION      API_VERSION
  51#define GENL_MAGIC_FAMILY       drbd
  52#define GENL_MAGIC_FAMILY_HDRSZ sizeof(struct drbd_genlmsghdr)
  53#define GENL_MAGIC_INCLUDE_FILE <linux/drbd_genl.h>
  54#include <linux/genl_magic_struct.h>
  55
  56#endif
  57