diff options
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/libiscsi.h | 34 | ||||
| -rw-r--r-- | include/scsi/scsi_transport_iscsi.h | 9 |
2 files changed, 34 insertions, 9 deletions
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 61e53f14f7e..51500573c0b 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -93,24 +93,38 @@ enum { ISCSI_TASK_RUNNING, }; +struct iscsi_r2t_info { + __be32 ttt; /* copied from R2T */ + __be32 exp_statsn; /* copied from R2T */ + uint32_t data_length; /* copied from R2T */ + uint32_t data_offset; /* copied from R2T */ + int data_count; /* DATA-Out payload progress */ + int datasn; + /* LLDs should set/update these values */ + int sent; /* R2T sequence progress */ +}; + struct iscsi_task { /* * Because LLDs allocate their hdr differently, this is a pointer * and length to that storage. It must be setup at session * creation time. */ - struct iscsi_cmd *hdr; + struct iscsi_hdr *hdr; unsigned short hdr_max; unsigned short hdr_len; /* accumulated size of hdr used */ + /* copied values in case we need to send tmfs */ + itt_t hdr_itt; + __be32 cmdsn; + uint8_t lun[8]; + int itt; /* this ITT */ - uint32_t unsol_datasn; unsigned imm_count; /* imm-data (bytes) */ - unsigned unsol_count; /* unsolicited (bytes)*/ /* offset in unsolicited stream (bytes); */ - unsigned unsol_offset; - unsigned data_count; /* remaining Data-Out */ + struct iscsi_r2t_info unsol_r2t; char *data; /* mgmt payload */ + unsigned data_count; struct scsi_cmnd *sc; /* associated SCSI cmd*/ struct iscsi_conn *conn; /* used connection */ @@ -121,6 +135,11 @@ struct iscsi_task { void *dd_data; /* driver/transport data */ }; +static inline int iscsi_task_has_unsol_data(struct iscsi_task *task) +{ + return task->unsol_r2t.data_length > task->unsol_r2t.sent; +} + static inline void* iscsi_next_hdr(struct iscsi_task *task) { return (void*)task->hdr + task->hdr_len; @@ -376,8 +395,9 @@ extern void iscsi_suspend_tx(struct iscsi_conn *conn); * pdu and task processing */ extern void iscsi_update_cmdsn(struct iscsi_session *, struct iscsi_nopin *); -extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *, - struct iscsi_data *hdr); +extern void iscsi_prep_data_out_pdu(struct iscsi_task *task, + struct iscsi_r2t_info *r2t, + struct iscsi_data *hdr); extern int iscsi_conn_send_pdu(struct iscsi_cls_conn *, struct iscsi_hdr *, char *, uint32_t); extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *, diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index c667cc39654..c928234c018 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -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); |