diff options
| author | Mike Christie <michaelc@cs.wisc.edu> | 2008-12-02 00:32:13 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-12-29 11:24:22 -0600 |
| commit | 262ef63627977acb7d8dd38c4f0f290bf49fbbfd (patch) | |
| tree | fc8e01280968470f2d3d122614508fe5e402e0a2 /include/scsi | |
| parent | 38e1a8f5479d7d75a68d797c7159f5b7e2ef44e4 (diff) | |
| download | linux-262ef63627977acb7d8dd38c4f0f290bf49fbbfd.tar.bz2 | |
[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')
| -rw-r--r-- | include/scsi/libiscsi.h | 5 | ||||
| -rw-r--r-- | include/scsi/scsi_transport_iscsi.h | 3 |
2 files changed, 6 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 @@ #include <linux/workqueue.h> #include <scsi/iscsi_proto.h> #include <scsi/iscsi_if.h> +#include <scsi/scsi_transport_iscsi.h> struct scsi_transport_template; struct scsi_host_template; @@ -70,12 +71,12 @@ enum { /* Connection suspend "bit" */ #define ISCSI_SUSPEND_BIT 1 -#define ISCSI_ITT_MASK (0x1fff) +#define ISCSI_ITT_MASK 0x1fff #define ISCSI_TOTAL_CMDS_MAX 4096 /* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */ #define ISCSI_TOTAL_CMDS_MIN 16 #define ISCSI_AGE_SHIFT 28 -#define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT) +#define ISCSI_AGE_MASK 0xf #define ISCSI_ADDRESS_BUF_LEN 64 diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index c928234c018f..e13cb20f1eae 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -122,6 +122,9 @@ struct iscsi_transport { int (*xmit_pdu) (struct iscsi_task *task); int (*init_pdu) (struct iscsi_task *task, unsigned int offset, unsigned int count); + void (*parse_pdu_itt) (struct iscsi_conn *conn, itt_t itt, + int *index, int *age); + void (*session_recovery_timedout) (struct iscsi_cls_session *session); struct iscsi_endpoint *(*ep_connect) (struct sockaddr *dst_addr, int non_blocking); |