diff options
Diffstat (limited to 'include/scsi/scsi_cmnd.h')
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index c6478bb6f96..de28aab820b 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -2,12 +2,12 @@ #define _SCSI_SCSI_CMND_H #include <linux/dma-mapping.h> +#include <linux/blkdev.h> #include <linux/list.h> #include <linux/types.h> #include <linux/timer.h> #include <linux/scatterlist.h> -struct request; struct Scsi_Host; struct scsi_device; @@ -158,4 +158,21 @@ static inline int scsi_get_resid(struct scsi_cmnd *cmd) #define scsi_for_each_sg(cmd, sg, nseg, __i) \ for_each_sg(scsi_sglist(cmd), sg, nseg, __i) +static inline int scsi_bidi_cmnd(struct scsi_cmnd *cmd) +{ + return blk_bidi_rq(cmd->request) && + (cmd->request->next_rq->special != NULL); +} + +static inline struct scsi_data_buffer *scsi_in(struct scsi_cmnd *cmd) +{ + return scsi_bidi_cmnd(cmd) ? + cmd->request->next_rq->special : &cmd->sdb; +} + +static inline struct scsi_data_buffer *scsi_out(struct scsi_cmnd *cmd) +{ + return &cmd->sdb; +} + #endif /* _SCSI_SCSI_CMND_H */ |