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authorMike Christie <michaelc@cs.wisc.edu>2008-12-02 01:32:13 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-12-29 12:24:22 -0500
commit262ef63627977acb7d8dd38c4f0f290bf49fbbfd (patch)
treefc8e01280968470f2d3d122614508fe5e402e0a2 /include/scsi/libiscsi.h
parent38e1a8f5479d7d75a68d797c7159f5b7e2ef44e4 (diff)
[SCSI] libiscsi: allow drivers to modify the itt sent to the target
bnx2i and cxgb3i need to encode LLD info in the itt so that the firmware/hardware can process the pdu. This patch allows the LLDs to encode info in the task->hdr->itt that they setup in the alloc_pdu callout (any resources that are allocated can be freed with the pdu in the cleanup_task callout). If the LLD encodes info in the itt they should implement a parse_pdu_itt callout. If parse_pdu_itt is not implemented libiscsi will do the right thing for the LLD. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/libiscsi.h')
-rw-r--r--include/scsi/libiscsi.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 51500573c0b8..7360e1916e75 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -30,6 +30,7 @@
30#include <linux/workqueue.h> 30#include <linux/workqueue.h>
31#include <scsi/iscsi_proto.h> 31#include <scsi/iscsi_proto.h>
32#include <scsi/iscsi_if.h> 32#include <scsi/iscsi_if.h>
33#include <scsi/scsi_transport_iscsi.h>
33 34
34struct scsi_transport_template; 35struct scsi_transport_template;
35struct scsi_host_template; 36struct scsi_host_template;
@@ -70,12 +71,12 @@ enum {
70/* Connection suspend "bit" */ 71/* Connection suspend "bit" */
71#define ISCSI_SUSPEND_BIT 1 72#define ISCSI_SUSPEND_BIT 1
72 73
73#define ISCSI_ITT_MASK (0x1fff) 74#define ISCSI_ITT_MASK 0x1fff
74#define ISCSI_TOTAL_CMDS_MAX 4096 75#define ISCSI_TOTAL_CMDS_MAX 4096
75/* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */ 76/* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */
76#define ISCSI_TOTAL_CMDS_MIN 16 77#define ISCSI_TOTAL_CMDS_MIN 16
77#define ISCSI_AGE_SHIFT 28 78#define ISCSI_AGE_SHIFT 28
78#define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT) 79#define ISCSI_AGE_MASK 0xf
79 80
80#define ISCSI_ADDRESS_BUF_LEN 64 81#define ISCSI_ADDRESS_BUF_LEN 64
81 82