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[SCSI] libiscsi: prepare libiscsi for new offload engines by modifying unsol data code

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cxgb3i offloads data transfers. It does not offload the entire scsi/iscsi
procssing like qla4xxx and it does not offload the iscsi sequence
processing like how bnx2i does. cxgb3i relies on iscsi_tcp for the
seqeunce handling so this changes how we transfer unsolicitied data by
adding a common r2t struct and helpers.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Mike Christie
2008-12-02 00:32:05 -06:00
committed by James Bottomley
parent 63c62f1cb9
commit 577577da6d
3 changed files with 156 additions and 70 deletions
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9
include/scsi/scsi_transport_iscsi.h
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@@ -113,10 +113,15 @@ struct iscsi_transport {
char *data, uint32_t data_size);
void (*get_stats) (struct iscsi_cls_conn *conn,
struct iscsi_stats *stats);
int (*init_task) (struct iscsi_task *task);
int (*xmit_task) (struct iscsi_task *task);
void (*cleanup_task) (struct iscsi_conn *conn,
struct iscsi_task *task);
void (*cleanup_task) (struct iscsi_task *task);
int (*alloc_pdu) (struct iscsi_task *task);
int (*xmit_pdu) (struct iscsi_task *task);
int (*init_pdu) (struct iscsi_task *task, unsigned int offset,
unsigned int count);
void (*session_recovery_timedout) (struct iscsi_cls_session *session);
struct iscsi_endpoint *(*ep_connect) (struct sockaddr *dst_addr,
int non_blocking);