On Thu, 2014-05-01 at 16:51 +0200, Christoph Hellwig wrote: > Add an option to only transfer half the data for every n-th command. > > Signed-off-by: Christoph Hellwig <[email protected]> > Acked-by: Douglas Gilbert <[email protected]>
Reviewed-by: Nicholas Bellinger <[email protected]> > --- > drivers/scsi/scsi_debug.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c > index f3e9cc0..1328a26 100644 > --- a/drivers/scsi/scsi_debug.c > +++ b/drivers/scsi/scsi_debug.c > @@ -130,6 +130,7 @@ static const char * scsi_debug_version_date = "20100324"; > #define SCSI_DEBUG_OPT_DIF_ERR 32 > #define SCSI_DEBUG_OPT_DIX_ERR 64 > #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 > +#define SCSI_DEBUG_OPT_SHORT_TRANSFER 256 > /* When "every_nth" > 0 then modulo "every_nth" commands: > * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set > * - a RECOVERED_ERROR is simulated on successful read and write > @@ -3583,6 +3584,7 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd > *SCpnt, done_funct_t done) > int inj_transport = 0; > int inj_dif = 0; > int inj_dix = 0; > + int inj_short = 0; > int delay_override = 0; > int unmap = 0; > > @@ -3628,6 +3630,8 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd > *SCpnt, done_funct_t done) > inj_dif = 1; /* to reads and writes below */ > else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) > inj_dix = 1; /* to reads and writes below */ > + else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & scsi_debug_opts) > + inj_short = 1; > } > > if (devip->wlun) { > @@ -3744,6 +3748,10 @@ read: > if (scsi_debug_fake_rw) > break; > get_data_transfer_info(cmd, &lba, &num, &ei_lba); > + > + if (inj_short) > + num /= 2; > + > errsts = resp_read(SCpnt, lba, num, devip, ei_lba); > if (inj_recovered && (0 == errsts)) { > mk_sense_buffer(devip, RECOVERED_ERROR, -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
