From 982bdf814616bec77c920e16ea4108d409f144ed Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Mon, 9 Aug 2010 18:12:53 +0200 Subject: [S390] ccwreq: add ability to use all paths Change the ccwrequest infrastructure to use more than one channel path per start I/O. A flag "singlepath" is added to struct ccw_request - if set, the old behavior is used. This flag is set for all exploiters of the ccwrequest infrastructure - so there is no functional change through this patch. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/io_sch.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/s390/cio/io_sch.h') diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index b9ce712a7f25..469ef93f2302 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -92,11 +92,12 @@ enum io_status { * @filter: optional callback to adjust request status based on IRB data * @callback: final callback * @data: user-defined pointer passed to all callbacks + * @singlepath: if set, use only one path from @lpm per start I/O + * @cancel: non-zero if request was cancelled + * @done: non-zero if request was finished * @mask: current path mask * @retries: current number of retries * @drc: delayed return code - * @cancel: non-zero if request was cancelled - * @done: non-zero if request was finished */ struct ccw_request { struct ccw1 *cp; @@ -108,12 +109,13 @@ struct ccw_request { enum io_status); void (*callback)(struct ccw_device *, void *, int); void *data; + unsigned int singlepath:1; /* These fields are used internally. */ + unsigned int cancel:1; + unsigned int done:1; u16 mask; u16 retries; int drc; - int cancel:1; - int done:1; } __attribute__((packed)); /* -- cgit v1.2.2