[SCSI] export command allocation and freeing functions independently of the host

[safe/jmp/linux-2.6] / include / scsi / scsi_cmnd.h

diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index de28aab..8d20e60 100644 (file)
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -130,6 +130,9 @@ extern void scsi_release_buffers(struct scsi_cmnd *cmd);
 extern int scsi_dma_map(struct scsi_cmnd *cmd);
 extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
 
+struct scsi_cmnd *scsi_allocate_command(gfp_t gfp_mask);
+void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd);
+
 static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd)
 {
        return cmd->sdb.table.nents;
@@ -175,4 +178,18 @@ 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 */