forked from mirrors/linux
ec2c35ac1e
This adds the new API header and helper files. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#ifndef DRBD_GENL_STRUCT_H
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#define DRBD_GENL_STRUCT_H
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/**
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* struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests
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* @minor:
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* For admin requests (user -> kernel): which minor device to operate on.
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* For (unicast) replies or informational (broadcast) messages
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* (kernel -> user): which minor device the information is about.
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* If we do not operate on minors, but on connections or resources,
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* the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT
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* is used instead.
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* @flags: possible operation modifiers (relevant only for user->kernel):
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* DRBD_GENL_F_SET_DEFAULTS
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* @volume:
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* When creating a new minor (adding it to a resource), the resource needs
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* to know which volume number within the resource this is supposed to be.
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* The volume number corresponds to the same volume number on the remote side,
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* whereas the minor number on the remote side may be different
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* (union with flags).
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* @ret_code: kernel->userland unicast cfg reply return code (union with flags);
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*/
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struct drbd_genlmsghdr {
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__u32 minor;
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union {
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__u32 flags;
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__s32 ret_code;
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};
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};
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/* To be used in drbd_genlmsghdr.flags */
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enum {
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DRBD_GENL_F_SET_DEFAULTS = 1,
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};
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enum drbd_state_info_bcast_reason {
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SIB_GET_STATUS_REPLY = 1,
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SIB_STATE_CHANGE = 2,
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SIB_HELPER_PRE = 3,
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SIB_HELPER_POST = 4,
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SIB_SYNC_PROGRESS = 5,
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};
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/* hack around predefined gcc/cpp "linux=1",
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* we cannot possibly include <1/drbd_genl.h> */
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#undef linux
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#include <linux/drbd.h>
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#define GENL_MAGIC_VERSION API_VERSION
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#define GENL_MAGIC_FAMILY drbd
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#define GENL_MAGIC_FAMILY_HDRSZ sizeof(struct drbd_genlmsghdr)
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#define GENL_MAGIC_INCLUDE_FILE <linux/drbd_genl.h>
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#include <linux/genl_magic_struct.h>
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#endif
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