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| author | FUJITA Tomonori | 2008-03-09 05:44:29 +0100 |
|---|---|---|
| committer | James Bottomley | 2008-04-07 19:15:45 +0200 |
| commit | 9ac16b616ab117dab3fce9790368d3b58ca441ef (patch) | |
| tree | 2da372ba43875040a2fca67217372569f0a97ff3 /include/scsi/scsi_cmnd.h | |
| parent | [SCSI] block: add sg buffer copy helper functions (diff) | |
| download | kernel-qcow2-linux-9ac16b616ab117dab3fce9790368d3b58ca441ef.tar.gz kernel-qcow2-linux-9ac16b616ab117dab3fce9790368d3b58ca441ef.tar.xz kernel-qcow2-linux-9ac16b616ab117dab3fce9790368d3b58ca441ef.zip | |
[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.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index de28aab820b0..b260be6d0d73 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 */ |