| Message ID | 20220510200028.37399-5-jsmart2021@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add VMID support to nvme-fc transport and lpfc driver | expand |
On 5/10/22 22:00, James Smart wrote: > Modify the nvme io path to look for vmid support and call the > transport to obtain the io's appid value. > > Signed-off-by: Gaurav Srivastava <gaurav.srivastava@broadcom.com> > Signed-off-by: James Smart <jsmart2021@gmail.com> > --- > drivers/scsi/lpfc/lpfc_nvme.c | 45 +++++++++++++++++++++++++++++++++++ > 1 file changed, 45 insertions(+) > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
> On May 10, 2022, at 1:00 PM, James Smart <jsmart2021@gmail.com> wrote: > > Modify the nvme io path to look for vmid support and call the > transport to obtain the io's appid value. > > Signed-off-by: Gaurav Srivastava <gaurav.srivastava@broadcom.com> > Signed-off-by: James Smart <jsmart2021@gmail.com> > --- > drivers/scsi/lpfc/lpfc_nvme.c | 45 +++++++++++++++++++++++++++++++++++ > 1 file changed, 45 insertions(+) > > diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c > index 5385f4de5523..335e90633933 100644 > --- a/drivers/scsi/lpfc/lpfc_nvme.c > +++ b/drivers/scsi/lpfc/lpfc_nvme.c > @@ -1279,6 +1279,19 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, > > /* Words 13 14 15 are for PBDE support */ > > + /* add the VMID tags as per switch response */ > + if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { > + if (phba->pport->vmid_priority_tagging) { > + bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); > + bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, > + lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); > + } else { > + bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); > + bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); > + wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; > + } > + } > + > pwqeq->vport = vport; > return 0; > } > @@ -1504,6 +1517,11 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, > struct lpfc_nvme_fcpreq_priv *freqpriv; > struct nvme_common_command *sqe; > uint64_t start = 0; > +#if (IS_ENABLED(CONFIG_NVME_FC)) > + u8 *uuid = NULL; > + int err; > + enum dma_data_direction iodir; > +#endif > > /* Validate pointers. LLDD fault handling with transport does > * have timing races. > @@ -1662,6 +1680,33 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, > lpfc_ncmd->ndlp = ndlp; > lpfc_ncmd->qidx = lpfc_queue_info->qidx; > > +#if (IS_ENABLED(CONFIG_NVME_FC)) > + /* check the necessary and sufficient condition to support VMID */ > + if (lpfc_is_vmid_enabled(phba) && > + (ndlp->vmid_support || > + phba->pport->vmid_priority_tagging == > + LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { > + /* is the I/O generated by a VM, get the associated virtual */ > + /* entity id */ > + uuid = nvme_fc_io_getuuid(pnvme_fcreq); > + > + if (uuid) { > + if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) > + iodir = DMA_TO_DEVICE; > + else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) > + iodir = DMA_FROM_DEVICE; > + else > + iodir = DMA_NONE; > + > + err = lpfc_vmid_get_appid(vport, uuid, iodir, > + (union lpfc_vmid_io_tag *) > + &lpfc_ncmd->cur_iocbq.vmid_tag); > + if (!err) > + lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; > + } > + } > +#endif > + > /* > * Issue the IO on the WQ indicated by index in the hw_queue_handle. > * This identfier was create in our hardware queue create callback > -- > 2.26.2 > Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> -- Himanshu Madhani Oracle Linux Engineering
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index 5385f4de5523..335e90633933 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -1279,6 +1279,19 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, /* Words 13 14 15 are for PBDE support */ + /* add the VMID tags as per switch response */ + if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { + if (phba->pport->vmid_priority_tagging) { + bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); + bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, + lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); + } else { + bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); + bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); + wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; + } + } + pwqeq->vport = vport; return 0; } @@ -1504,6 +1517,11 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, struct lpfc_nvme_fcpreq_priv *freqpriv; struct nvme_common_command *sqe; uint64_t start = 0; +#if (IS_ENABLED(CONFIG_NVME_FC)) + u8 *uuid = NULL; + int err; + enum dma_data_direction iodir; +#endif /* Validate pointers. LLDD fault handling with transport does * have timing races. @@ -1662,6 +1680,33 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, lpfc_ncmd->ndlp = ndlp; lpfc_ncmd->qidx = lpfc_queue_info->qidx; +#if (IS_ENABLED(CONFIG_NVME_FC)) + /* check the necessary and sufficient condition to support VMID */ + if (lpfc_is_vmid_enabled(phba) && + (ndlp->vmid_support || + phba->pport->vmid_priority_tagging == + LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { + /* is the I/O generated by a VM, get the associated virtual */ + /* entity id */ + uuid = nvme_fc_io_getuuid(pnvme_fcreq); + + if (uuid) { + if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) + iodir = DMA_TO_DEVICE; + else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) + iodir = DMA_FROM_DEVICE; + else + iodir = DMA_NONE; + + err = lpfc_vmid_get_appid(vport, uuid, iodir, + (union lpfc_vmid_io_tag *) + &lpfc_ncmd->cur_iocbq.vmid_tag); + if (!err) + lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; + } + } +#endif + /* * Issue the IO on the WQ indicated by index in the hw_queue_handle. * This identfier was create in our hardware queue create callback