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[SCSI] be2iscsi: Fix connection offload to support Dual Chute. 

The connection is offload to each chute in a round-robin manner
if both the chute is loaded with iSCSI protocol

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jayamohan Kallickal 2013-09-28 15:35:50 -07:00 committed by James Bottomley
parent 0a3db7c0a3
commit 1e4be6ff41
4 changed files with 31 additions and 8 deletions
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6
drivers/scsi/be2iscsi/be_iscsi.c
View File

@ -194,6 +194,8 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
struct beiscsi_hba *phba = iscsi_host_priv(shost);
struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
struct hwi_wrb_context *pwrb_context;
struct beiscsi_endpoint *beiscsi_ep;
struct iscsi_endpoint *ep;
@ -214,9 +216,13 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
return -EEXIST;
}
pwrb_context = &phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(
beiscsi_ep->ep_cid)];
beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
beiscsi_conn->ep = beiscsi_ep;
beiscsi_ep->conn = beiscsi_conn;
beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",

13
drivers/scsi/be2iscsi/be_main.c
View File

@ -4585,8 +4585,8 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
<< DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
}
static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
@ -4811,7 +4811,8 @@ int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
DB_DEF_PDU_WRB_INDEX_MASK) <<
DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}
@ -4866,7 +4867,8 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}
@ -4968,7 +4970,8 @@ static int beiscsi_mtask(struct iscsi_task *task)
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
iowrite32(doorbell, phba->db_va +
beiscsi_conn->doorbell_offset);
return 0;
}

1
drivers/scsi/be2iscsi/be_main.h
View File

@ -425,6 +425,7 @@ struct beiscsi_conn {
struct iscsi_conn *conn;
struct beiscsi_hba *phba;
u32 exp_statsn;
u32 doorbell_offset;
u32 beiscsi_conn_cid;
struct beiscsi_endpoint *ep;
unsigned short login_in_progress;

19
drivers/scsi/be2iscsi/be_mgmt.c
View File

@ -628,6 +628,16 @@ unsigned int mgmt_upload_connection(struct beiscsi_hba *phba,
return tag;
}
/**
* mgmt_open_connection()- Establish a TCP CXN
* @dst_addr: Destination Address
* @beiscsi_ep: ptr to device endpoint struct
* @nonemb_cmd: ptr to memory allocated for command
*
* return
* Success: Tag number of the MBX Command issued
* Failure: Error code
**/
int mgmt_open_connection(struct beiscsi_hba *phba,
struct sockaddr *dst_addr,
struct beiscsi_endpoint *beiscsi_ep,
@ -645,14 +655,17 @@ int mgmt_open_connection(struct beiscsi_hba *phba,
struct phys_addr template_address = { 0, 0 };
struct phys_addr *ptemplate_address;
unsigned int tag = 0;
unsigned int i;
unsigned int i, ulp_num;
unsigned short cid = beiscsi_ep->ep_cid;
struct be_sge *sge;
phwi_ctrlr = phba->phwi_ctrlr;
phwi_context = phwi_ctrlr->phwi_ctxt;
def_hdr_id = (unsigned short)HWI_GET_DEF_HDRQ_ID(phba, 0);
def_data_id = (unsigned short)HWI_GET_DEF_BUFQ_ID(phba, 0);
ulp_num = phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(cid)].ulp_num;
def_hdr_id = (unsigned short)HWI_GET_DEF_HDRQ_ID(phba, ulp_num);
def_data_id = (unsigned short)HWI_GET_DEF_BUFQ_ID(phba, ulp_num);
ptemplate_address = &template_address;
ISCSI_GET_PDU_TEMPLATE_ADDRESS(phba, ptemplate_address);