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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-03-09 13:44:29 +0900
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-07 12:15:45 -0500
commit9ac16b616ab117dab3fce9790368d3b58ca441ef (patch)
tree2da372ba43875040a2fca67217372569f0a97ff3 /include/scsi/scsi_cmnd.h
parentb1adaf65ba0398c9a1adc8f3a274533165a4df61 (diff)
[SCSI] scsi: add wrapper functions for sg buffer copy helper functions
LLDs need to copies data between the SG table in struct scsi_cmnd and liner buffer. So they use the helper functions like sg_copy_from_buffer(scsi_sglist(sc), scsi_sg_count(sc), buf, buflen) sg_copy_to_buffer(scsi_sglist(sc), scsi_sg_count(sc), buf, buflen) This patch just adds wrapper functions: scsi_sg_copy_from_buffer(sc, buf, buflen) scsi_sg_copy_to_buffer(sc, buf, buflen) Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/scsi_cmnd.h')
-rw-r--r--include/scsi/scsi_cmnd.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index de28aab820b..b260be6d0d7 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -175,4 +175,18 @@ static inline struct scsi_data_buffer *scsi_out(struct scsi_cmnd *cmd)
return &cmd->sdb;
}
+static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd,
+ void *buf, int buflen)
+{
+ return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
+ buf, buflen);
+}
+
+static inline int scsi_sg_copy_to_buffer(struct scsi_cmnd *cmd,
+ void *buf, int buflen)
+{
+ return sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
+ buf, buflen);
+}
+
#endif /* _SCSI_SCSI_CMND_H */