diff options
| author | James Smart <jsmart2021@gmail.com> | 2019-08-15 02:57:08 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-08-20 05:41:12 +0300 |
| commit | e62245d923caebc02582b12ce861c3d780b4106f (patch) | |
| tree | 0141bcf65ed5887c1b1ca04cce4db41670a0d76b /drivers/scsi/lpfc/lpfc_sli.c | |
| parent | ec76242f3be73e5cbb950a7ac99d4fba7e226e2e (diff) | |
| download | linux-e62245d923caebc02582b12ce861c3d780b4106f.tar.xz | |
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: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 03404dbd6ddf..940dd82a265b 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -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; - } + /* 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); |