From e1c234685c50807e10a3e7873e6e006976a4d8e8 Mon Sep 17 00:00:00 2001 From: Boaz Harrosh Date: Mon, 8 Oct 2007 16:36:45 +0200 Subject: [SCSI] scsi_error: Refactoring scsi_error to facilitate in synchronous REQUEST_SENSE - Drivers/transports that want to send a synchronous REQUEST_SENSE command as part of their .queuecommand sequence, have 2 new API's that facilitate in doing so and abstract them from scsi-ml internals. void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *sesci, unsigned char *cmnd, int cmnd_size, int sense_bytes) Will hijack a command and prepare it for request sense if needed. And will save any later needed info into a scsi_eh_save structure. void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, struct scsi_eh_save *sesci); Will undo any changes done to a command by above function. Making it ready for completion. - Re-factor scsi_send_eh_cmnd() to use above APIs Signed-off-by: Boaz Harrosh Signed-off-by: James Bottomley --- include/scsi/scsi_eh.h | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'include/scsi') diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h index c5c0f6762a01..44224ba4dd90 100644 --- a/include/scsi/scsi_eh.h +++ b/include/scsi/scsi_eh.h @@ -1,7 +1,7 @@ #ifndef _SCSI_SCSI_EH_H #define _SCSI_SCSI_EH_H -struct scsi_cmnd; +#include struct scsi_device; struct Scsi_Host; @@ -65,4 +65,25 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, extern int scsi_reset_provider(struct scsi_device *, int); +struct scsi_eh_save { + int result; + enum dma_data_direction data_direction; + unsigned char cmd_len; + unsigned char cmnd[MAX_COMMAND_SIZE]; + + void *buffer; + unsigned bufflen; + unsigned short use_sg; + int resid; + + struct scatterlist sense_sgl; +}; + +extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, + struct scsi_eh_save *ses, unsigned char *cmnd, + int cmnd_size, unsigned sense_bytes); + +extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, + struct scsi_eh_save *ses); + #endif /* _SCSI_SCSI_EH_H */ -- cgit v1.2.3