include/scsi/scsi_request.h

   1 #ifndef _SCSI_SCSI_REQUEST_H
   2 #define _SCSI_SCSI_REQUEST_H
   3
   4 #include <linux/blk-mq.h>
   5
   6 #define BLK_MAX_CDB     16
   7
   8 struct scsi_request {
   9         unsigned char   __cmd[BLK_MAX_CDB];
  10         unsigned char   *cmd;
  11         unsigned short  cmd_len;
  12         unsigned int    sense_len;
  13         unsigned int    resid_len;      /* residual count */
  14         void            *sense;
  15 };
  16
  17 static inline struct scsi_request *scsi_req(struct request *rq)
  18 {
  19         return blk_mq_rq_to_pdu(rq);
  20 }
  21
  22 static inline void scsi_req_free_cmd(struct scsi_request *req)
  23 {
  24         if (req->cmd != req->__cmd)
  25                 kfree(req->cmd);
  26 }
  27
  28 void scsi_req_init(struct request *);
  29
  30 #endif /* _SCSI_SCSI_REQUEST_H */