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scsi: lpfc: Add support for VMID tagging of NVMe I/Os

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Modify the NVMe I/O path to look for VMID support and call the transport to
obtain the I/O's appid value.

Link: https://lore.kernel.org/r/20220519123110.17361-5-jsmart2021@gmail.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Co-developed-by: Gaurav Srivastava <gaurav.srivastava@broadcom.com>
Signed-off-by: Gaurav Srivastava <gaurav.srivastava@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2022-05-19 05:31:10 -07:00 committed by Martin K. Petersen
parent 348efeca74
commit 896325a8b1
1 changed files with 45 additions and 0 deletions
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45
drivers/scsi/lpfc/lpfc_nvme.c
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@ -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