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         int             result;
  13         unsigned int    sense_len;
  14         unsigned int    resid_len;      /* residual count */
  15         int             retries;
  16         void            *sense;
  17 };
  18
  19 static inline struct scsi_request *scsi_req(struct request *rq)
  20 {
  21         return blk_mq_rq_to_pdu(rq);
  22 }
  23
  24 static inline void scsi_req_free_cmd(struct scsi_request *req)
  25 {
  26         if (req->cmd != req->__cmd)
  27                 kfree(req->cmd);
  28 }
  29
  30 void scsi_req_init(struct scsi_request *req);
  31
  32 #endif /* _SCSI_SCSI_REQUEST_H */