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author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-03-07 10:20:08 +0100 |
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committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-10-14 16:48:08 +0200 |
commit | ec2c35ac1ea288f5c931e32452ecea50068e8450 (patch) | |
tree | 0f21d21aab56f188c21109fc38305d17dcce6df3 /include/linux/drbd_genl_api.h | |
parent | 3cb7a2a90fe35eb3059e8860d0c6917eb414f791 (diff) | |
download | linux-stable-ec2c35ac1ea288f5c931e32452ecea50068e8450.tar.gz linux-stable-ec2c35ac1ea288f5c931e32452ecea50068e8450.tar.bz2 linux-stable-ec2c35ac1ea288f5c931e32452ecea50068e8450.zip |
drbd: prepare the transition from connector to genetlink
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>
Diffstat (limited to 'include/linux/drbd_genl_api.h')
-rw-r--r-- | include/linux/drbd_genl_api.h | 55 |
1 files changed, 55 insertions, 0 deletions
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 <linux/drbd.h> +#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 <linux/drbd_genl.h> +#include <linux/genl_magic_struct.h> + +#endif |