Commit e62245d9 authored by James Smart's avatar James Smart Committed by Martin K. Petersen
Browse files

scsi: lpfc: Add MDS driver loopback diagnostics support 



Added code to support driver loopback with MDS Diagnostics.  This style of
diagnostics passes frames from the fabric to the driver who then echo them
back out the link.  SEND_FRAME WQEs are used to transmit the frames.  Added
the SOF and EOF field location definitions for use by SEND_FRAME.

Also ensure that enable_mds_diags is a RW parameter.

Signed-off-by: default avatarDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: default avatarJames Smart <jsmart2021@gmail.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent ec76242f

drivers/scsi/lpfc/lpfc_attr.c

+1 −1
Original line number Diff line number Diff line
@@ -5912,7 +5912,7 @@ lpfc_sg_seg_cnt_init(struct lpfc_hba *phba, int val) 
 *       1  = MDS Diagnostics enabled

 * Value range is [0,1]. Default value is 0.

 */

LPFC_ATTR_R(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");

LPFC_ATTR_RW(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");



/*

 * lpfc_ras_fwlog_buffsize: Firmware logging host buffer size

drivers/scsi/lpfc/lpfc_els.c

+6 −5
Original line number Diff line number Diff line
@@ -1052,17 +1052,18 @@ stop_rr_fcf_flogi: 
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))

			goto out;



		lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,

				 "0150 FLOGI failure Status:x%x/x%x "

				 "xri x%x TMO:x%x\n",

				 irsp->ulpStatus, irsp->un.ulpWord[4],

				 cmdiocb->sli4_xritag, irsp->ulpTimeout);



		/* If this is not a loop open failure, bail out */

		if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&

		      ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==

					IOERR_LOOP_OPEN_FAILURE)))

			goto flogifail;



		lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,

				 "0150 FLOGI failure Status:x%x/x%x xri x%x TMO:x%x\n",

				 irsp->ulpStatus, irsp->un.ulpWord[4],

				 cmdiocb->sli4_xritag, irsp->ulpTimeout);



		/* FLOGI failed, so there is no fabric */

		spin_lock_irq(shost->host_lock);

		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);

drivers/scsi/lpfc/lpfc_hw4.h

+6 −0
Original line number Diff line number Diff line
@@ -4314,6 +4314,12 @@ struct wqe_common { 
#define wqe_rcvoxid_SHIFT     16

#define wqe_rcvoxid_MASK      0x0000FFFF

#define wqe_rcvoxid_WORD      word9

#define wqe_sof_SHIFT         24

#define wqe_sof_MASK          0x000000FF

#define wqe_sof_WORD          word9

#define wqe_eof_SHIFT         16

#define wqe_eof_MASK          0x000000FF

#define wqe_eof_WORD          word9

	uint32_t word10;

#define wqe_ebde_cnt_SHIFT    0

#define wqe_ebde_cnt_MASK     0x0000000f

drivers/scsi/lpfc/lpfc_sli.c

+25 −5
Original line number Diff line number Diff line
@@ -9352,11 +9352,9 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq, 
		memset(wqe, 0, sizeof(union lpfc_wqe128));

	/* Some of the fields are in the right position already */

	memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));

	if (iocbq->iocb.ulpCommand != CMD_SEND_FRAME) {

	/* The ct field has moved so reset */

	wqe->generic.wqe_com.word7 = 0;

	wqe->generic.wqe_com.word10 = 0;

	}















	abort_tag = (uint32_t) iocbq->iotag;















	xritag = iocbq->sli4_xritag;










@@ -9862,6 +9860,15 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,



























		break;















	case CMD_SEND_FRAME:













		bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_SEND_FRAME);













		bf_set(wqe_sof, &wqe->generic.wqe_com, 0x2E); /* SOF byte */













		bf_set(wqe_eof, &wqe->generic.wqe_com, 0x41); /* EOF byte */













		bf_set(wqe_lenloc, &wqe->generic.wqe_com, 1);













		bf_set(wqe_xbl, &wqe->generic.wqe_com, 1);













		bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);













		bf_set(wqe_xc, &wqe->generic.wqe_com, 1);













		bf_set(wqe_cmd_type, &wqe->generic.wqe_com, 0xA);













		bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);















		bf_set(wqe_xri_tag, &wqe->generic.wqe_com, xritag);















		bf_set(wqe_reqtag, &wqe->generic.wqe_com, iocbq->iotag);















		return 0;










@@ -16940,6 +16947,8 @@ lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)













	struct fc_vft_header *fc_vft_hdr;















	uint32_t *header = (uint32_t *) fc_hdr;



























#define FC_RCTL_MDS_DIAGS	0xF4



























	switch (fc_hdr->fh_r_ctl) {















	case FC_RCTL_DD_UNCAT:		/* uncategorized information */















	case FC_RCTL_DD_SOL_DATA:	/* solicited data */










@@ -17949,6 +17958,17 @@ lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba,













		fcfi = bf_get(lpfc_rcqe_fcf_id,















			      &dmabuf->cq_event.cqe.rcqe_cmpl);



























	if (fc_hdr->fh_r_ctl == 0xF4 && fc_hdr->fh_type == 0xFF) {













		vport = phba->pport;













		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,













				"2023 MDS Loopback %d bytes\n",













				bf_get(lpfc_rcqe_length,













				       &dmabuf->cq_event.cqe.rcqe_cmpl));













		/* Handle MDS Loopback frames */













		lpfc_sli4_handle_mds_loopback(vport, dmabuf);













		return;













	}



























	/* d_id this frame is directed to */















	did = sli4_did_from_fc_hdr(fc_hdr);









































































CRA Git | Maintained and supported by SUSTech CRA and CCSE