diff options
Diffstat (limited to 'include/scsi/scsi_transport_fc.h')
| -rw-r--r-- | include/scsi/scsi_transport_fc.h | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 68a8d873bbd9..fc50bd64aa4e 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -33,7 +33,6 @@ struct scsi_transport_template; - /* * FC Port definitions - Following FC HBAAPI guidelines * @@ -352,6 +351,7 @@ struct fc_rport { /* aka fc_starget_attrs */ struct delayed_work fail_io_work; struct work_struct stgt_delete_work; struct work_struct rport_delete_work; + struct request_queue *rqst_q; /* bsg support */ } __attribute__((aligned(sizeof(unsigned long)))); /* bit field values for struct fc_rport "flags" field: */ @@ -514,6 +514,9 @@ struct fc_host_attrs { struct workqueue_struct *work_q; char devloss_work_q_name[20]; struct workqueue_struct *devloss_work_q; + + /* bsg support */ + struct request_queue *rqst_q; }; #define shost_to_fc_host(x) \ @@ -579,6 +582,47 @@ struct fc_host_attrs { (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) +struct fc_bsg_buffer { + unsigned int payload_len; + int sg_cnt; + struct scatterlist *sg_list; +}; + +/* Values for fc_bsg_job->state_flags (bitflags) */ +#define FC_RQST_STATE_INPROGRESS 0 +#define FC_RQST_STATE_DONE 1 + +struct fc_bsg_job { + struct Scsi_Host *shost; + struct fc_rport *rport; + struct device *dev; + struct request *req; + spinlock_t job_lock; + unsigned int state_flags; + unsigned int ref_cnt; + void (*job_done)(struct fc_bsg_job *); + + struct fc_bsg_request *request; + struct fc_bsg_reply *reply; + unsigned int request_len; + unsigned int reply_len; + /* + * On entry : reply_len indicates the buffer size allocated for + * the reply. + * + * Upon completion : the message handler must set reply_len + * to indicates the size of the reply to be returned to the + * caller. + */ + + /* DMA payloads for the request/response */ + struct fc_bsg_buffer request_payload; + struct fc_bsg_buffer reply_payload; + + void *dd_data; /* Used for driver-specific storage */ +}; + + /* The functions by which the transport class and the driver communicate */ struct fc_function_template { void (*get_rport_dev_loss_tmo)(struct fc_rport *); @@ -614,9 +658,14 @@ struct fc_function_template { int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int); int (* it_nexus_response)(struct Scsi_Host *, u64, int); + /* bsg support */ + int (*bsg_request)(struct fc_bsg_job *); + int (*bsg_timeout)(struct fc_bsg_job *); + /* allocation lengths for host-specific data */ u32 dd_fcrport_size; u32 dd_fcvport_size; + u32 dd_bsg_size; /* * The driver sets these to tell the transport class it @@ -737,7 +786,6 @@ fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state) vport->vport_state = new_state; } - struct scsi_transport_template *fc_attach_transport( struct fc_function_template *); void fc_release_transport(struct scsi_transport_template *); |