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authorChandra Seetharaman <sekharan@us.ibm.com>2009-08-03 12:42:33 -0700
committerJames Bottomley <James.Bottomley@suse.de>2009-08-22 17:52:14 -0500
commit18ee70c9d7b2dcd312a1f8c6536841e7c0fea5ca (patch)
treefc147f1704a72f2e79b4b2b4e3aedee95b26f601 /include/scsi/scsi_device.h
parent21fab1d0595eacf781705ec3509012a28f298245 (diff)
downloadop-kernel-dev-18ee70c9d7b2dcd312a1f8c6536841e7c0fea5ca.zip
op-kernel-dev-18ee70c9d7b2dcd312a1f8c6536841e7c0fea5ca.tar.gz
[SCSI] scsi_dh: add the interface scsi_dh_set_params()
When we moved the device handler functionality from dm layer to SCSI layer we dropped the parameter functionality. This path adds an interface to scsi dh layer to set device handler parameters. Basically, multipath layer need to create a string with all the parameters and call scsi_dh_set_params() after it called scsi_dh_attach() on a device. If a device handler provides such an interface it will handle the parameters as it expects them. Reported-by: Eddie Williams <Eddie.Williams@steeleye.com> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Tested-by: Eddie Williams <Eddie.Williams@steeleye.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'include/scsi/scsi_device.h')
-rw-r--r--include/scsi/scsi_device.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 1f3a4c8..9af48cb 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -187,6 +187,7 @@ struct scsi_device_handler {
void (*detach)(struct scsi_device *);
int (*activate)(struct scsi_device *);
int (*prep_fn)(struct scsi_device *, struct request *);
+ int (*set_params)(struct scsi_device *, const char *);
};
struct scsi_dh_data {
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