On Sun, Feb 10, 2008 at 09:09:41PM +0200, Boaz Harrosh wrote: > - add varlen_cdb and varlen_cdb_len to hold a large user cdb > if needed. They start as empty. Allocation of buffer must > be done by user and held until request execution is done. > - Since there can be either a fix_length command up to 16 bytes > or a variable_length, larger then 16 bytes, commands but never > both, we hold the two types in a union to save space. The > presence of varlen_cdb_len and cmd_len==0 signals a varlen_cdb > mode. this one I'm a bit confused by, why can't we just set the length of the variable length command in cmd_len aswell, and if cmd_len > the length of the cmd array it's a variable length command? Note that this is both to keep the logic simpler and not to grow struct request further. Especially for the rather rare case of a bidi command. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
