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 */ 24 struct 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 */ 33 enum { 34 DRBD_GENL_F_SET_DEFAULTS = 1, 35 }; 36 37 enum 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