include/scsi/scsi_request.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SCSI_SCSI_REQUEST_H
   3 #define _SCSI_SCSI_REQUEST_H
   4
   5 #include <linux/blk-mq.h>
   6
   7 #define BLK_MAX_CDB     16
   8
   9 struct scsi_request {
  10         unsigned char   __cmd[BLK_MAX_CDB];
  11         unsigned char   *cmd;
  12         unsigned short  cmd_len;
  13         int             result;
  14         unsigned int    sense_len;
  15         unsigned int    resid_len;      /* residual count */
  16         int             retries;
  17         void            *sense;
  18 };
  19
  20 static inline struct scsi_request *scsi_req(struct request *rq)
  21 {
  22         return blk_mq_rq_to_pdu(rq);
  23 }
  24
  25 static inline void scsi_req_free_cmd(struct scsi_request *req)
  26 {
  27         if (req->cmd != req->__cmd)
  28                 kfree(req->cmd);
  29 }
  30
  31 void scsi_req_init(struct scsi_request *req);
  32
  33 #endif /* _SCSI_SCSI_REQUEST_H */