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authorMike Christie <michaelc@cs.wisc.edu>2006-01-13 18:05:50 -0600
committerJames Bottomley <jejb@mulgrave.(none)>2006-01-14 10:55:20 -0600
commit7b8631b53bea286b68847a939b87135198335b66 (patch)
tree69a3d47f4d00f98771c4eb3cb6bc11fde0a6e0a1 /include/scsi/iscsi_if.h
parent7cae5159dd2623300cf9820865bfbf6dcdb7c1b9 (diff)
[SCSI] iscsi: seperate iscsi interface from setup functions
This is the second version of the patch to address Christoph's comments. Instead of doing the lib, I just kept everything in scsi_trnapsort_iscsi.c like the FC and SPI class. This was becuase the driver model and sysfs class is tied to the session and connection setup so separating did not buy very much at this time. The reason for this patch was becuase HW iscsi LLDs like qla4xxx cannot use the iscsi class becuase the scsi_host was tied to the interface and class code. This patch just seperates the session from scsi host so that LLDs that allocate the host per some resource like pci device can still use the class. This is also fixes a couple refcount bugs that can be triggered when users have a sysfs file open, close the session, then read or write to the file. Signed-off-by: Alex Aizman <itn780@yahoo.com> Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi/iscsi_if.h')
-rw-r--r--include/scsi/iscsi_if.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index be1bc792ab1..3e5cb5ab2d3 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -168,6 +168,12 @@ typedef uint64_t iscsi_connh_t; /* iSCSI Data-Path connection handle */
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
+#define hostdata_session(_hostdata) (iscsi_ptr(*(unsigned long *)_hostdata))
+
+/**
+ * iscsi_hostdata - get LLD hostdata from scsi_host
+ * @_hostdata: pointer to scsi host's hostdata
+ **/
#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
/*