diff options
Diffstat (limited to 'include/scsi/osd_initiator.h')
| -rw-r--r-- | include/scsi/osd_initiator.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h index e84dc7a..8482777 100644 --- a/include/scsi/osd_initiator.h +++ b/include/scsi/osd_initiator.h @@ -21,6 +21,23 @@ /* Note: "NI" in comments below means "Not Implemented yet" */ +/* Configure of code: + * #undef if you *don't* want OSD v1 support in runtime. + * If #defined the initiator will dynamically configure to encode OSD v1 + * CDB's if the target is detected to be OSD v1 only. + * OSD v2 only commands, options, and attributes will be ignored if target + * is v1 only. + * If #defined will result in bigger/slower code (OK Slower maybe not) + * Q: Should this be CONFIG_SCSI_OSD_VER1_SUPPORT and set from Kconfig? + */ +#define OSD_VER1_SUPPORT y + +enum osd_std_version { + OSD_VER_NONE = 0, + OSD_VER1 = 1, + OSD_VER2 = 2, +}; + /* * Object-based Storage Device. * This object represents an OSD device. @@ -31,6 +48,10 @@ struct osd_dev { struct scsi_device *scsi_device; unsigned def_timeout; + +#ifdef OSD_VER1_SUPPORT + enum osd_std_version version; +#endif }; /* Retrieve/return osd_dev(s) for use by Kernel clients */ @@ -46,6 +67,14 @@ void osduld_unregister_test(unsigned ioctl); void osd_dev_init(struct osd_dev *od, struct scsi_device *scsi_device); void osd_dev_fini(struct osd_dev *od); +/* we might want to use function vector in the future */ +static inline void osd_dev_set_ver(struct osd_dev *od, enum osd_std_version v) +{ +#ifdef OSD_VER1_SUPPORT + od->version = v; +#endif +} + struct osd_request; typedef void (osd_req_done_fn)(struct osd_request *or, void *private); @@ -82,6 +111,16 @@ struct osd_request { int async_error; }; +/* OSD Version control */ +static inline bool osd_req_is_ver1(struct osd_request *or) +{ +#ifdef OSD_VER1_SUPPORT + return or->osd_dev->version == OSD_VER1; +#else + return false; +#endif +} + /* * How to use the osd library: * |