From ec2c35ac1ea288f5c931e32452ecea50068e8450 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 7 Mar 2011 10:20:08 +0100 Subject: drbd: prepare the transition from connector to genetlink This adds the new API header and helper files. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl_api.h | 55 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 include/linux/drbd_genl_api.h (limited to 'include/linux/drbd_genl_api.h') diff --git a/include/linux/drbd_genl_api.h b/include/linux/drbd_genl_api.h new file mode 100644 index 000000000000..9ef50d51e34e --- /dev/null +++ b/include/linux/drbd_genl_api.h @@ -0,0 +1,55 @@ +#ifndef DRBD_GENL_STRUCT_H +#define DRBD_GENL_STRUCT_H + +/** + * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests + * @minor: + * For admin requests (user -> kernel): which minor device to operate on. + * For (unicast) replies or informational (broadcast) messages + * (kernel -> user): which minor device the information is about. + * If we do not operate on minors, but on connections or resources, + * the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT + * is used instead. + * @flags: possible operation modifiers (relevant only for user->kernel): + * DRBD_GENL_F_SET_DEFAULTS + * @volume: + * When creating a new minor (adding it to a resource), the resource needs + * to know which volume number within the resource this is supposed to be. + * The volume number corresponds to the same volume number on the remote side, + * whereas the minor number on the remote side may be different + * (union with flags). + * @ret_code: kernel->userland unicast cfg reply return code (union with flags); + */ +struct drbd_genlmsghdr { + __u32 minor; + union { + __u32 flags; + __s32 ret_code; + }; +}; + +/* To be used in drbd_genlmsghdr.flags */ +enum { + DRBD_GENL_F_SET_DEFAULTS = 1, +}; + +enum drbd_state_info_bcast_reason { + SIB_GET_STATUS_REPLY = 1, + SIB_STATE_CHANGE = 2, + SIB_HELPER_PRE = 3, + SIB_HELPER_POST = 4, + SIB_SYNC_PROGRESS = 5, +}; + +/* hack around predefined gcc/cpp "linux=1", + * we cannot possibly include <1/drbd_genl.h> */ +#undef linux + +#include +#define GENL_MAGIC_VERSION API_VERSION +#define GENL_MAGIC_FAMILY drbd +#define GENL_MAGIC_FAMILY_HDRSZ sizeof(struct drbd_genlmsghdr) +#define GENL_MAGIC_INCLUDE_FILE +#include + +#endif -- cgit v1.2.3