path: root/include/scsi
diff options
authorDan Williams <dan.j.williams@intel.com>2010-10-01 13:55:52 -0700
committerJames Bottomley <James.Bottomley@suse.de>2010-12-21 12:23:53 -0600
commit00f0254ed9b19164d416dc2e3c2e81eda55a6faf (patch)
treed33cb0b2c36ecd9ef4dbe32d9294dbd5c221f852 /include/scsi
parent[SCSI] sd: improve logic and efficiecy of media-change detection (diff)
[SCSI] libsas: fix definition of wideport, include local sas address
To date libsas has only looked at the attached sas address when determining the formation of wide ports. The specification and some hardware expects that phys with different addresses will not form a wide port unless the local peer phys also match each other. Introduce a flag to select stricter behavior at sas_register_ha() time. The flag can be dropped once it is known that all libsas users expect the same behavior. Current drivers just initialize this field to zero and get the traditional behavior. Reported-by: Patrick Thomson <patrick.s.thomson@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'include/scsi')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 90ce527ecf3d..8f6bb9c7f3eb 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -361,6 +361,8 @@ struct sas_ha_struct {
/* The class calls this to send a task for execution. */
int lldd_max_execute_num;
int lldd_queue_size;
+ int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
+ * their siblings when forming wide ports */
/* LLDD calls these to notify the class of an event. */
void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event);