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scsi: qla2xxx: Add Unsolicited LS Request and Response Support for NVMe

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Introduce infrastructure in the driver to support the processing of
unsolicited LS (Link Service) requests. This will involve the utilization
of a new pass-up of unsolicited FC-NVMe request IOCB interface. Unsolicited
requests will be submitted to the NVMe transport layer through
nvme_fc_rcv_ls_req(). Any received LS responses, which are sent using
xmt_ls_rsp(), will be forwarded to the firmware through the existing
Pass-Through IOCB interface, responsible for sending FC-NVMe Link Service
requests and responses.

Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230821130045.34850-2-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Manish Rangankar
2023-08-21 18:30:37 +05:30
committed by Martin K. Petersen
parent ae25f65a35
commit 875386b988
11 changed files with 642 additions and 34 deletions
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6
include/linux/nvme-fc-driver.h
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@@ -53,10 +53,10 @@
struct nvmefc_ls_req {
void *rqstaddr;
dma_addr_t rqstdma;
u32 rqstlen;
__le32 rqstlen;
void *rspaddr;
dma_addr_t rspdma;
u32 rsplen;
__le32 rsplen;
u32 timeout;
void *private;
@@ -120,7 +120,7 @@ struct nvmefc_ls_req {
struct nvmefc_ls_rsp {
void *rspbuf;
dma_addr_t rspdma;
u16 rsplen;
__le32 rsplen;
void (*done)(struct nvmefc_ls_rsp *rsp);
void *nvme_fc_private; /* LLDD is not to access !! */