nvmet: pass back cntlid on successful completion

According to the NVMe specification, the response dword 0 value of the
Connect command is based on status code: return cntlid for successful
compeltion return IPO and IATTR for connect invalid parameters.  Fix
a missing error information for a zero sized queue, and return the
cntlid also for I/O queue Connect commands.

Signed-off-by: Amit Engel <amit.engel@dell.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c
index 7d0f352..8ef564c 100644 (file)
--- a/drivers/nvme/target/fabrics-cmd.c
+++ b/drivers/nvme/target/fabrics-cmd.c
@@ -120,6 +120,7 @@ static u16 nvmet_install_queue(struct nvmet_ctrl *ctrl, struct nvmet_req *req)
        if (!sqsize) {
                pr_warn("queue size zero!\n");
                req->error_loc = offsetof(struct nvmf_connect_command, sqsize);
+               req->cqe->result.u32 = IPO_IATTR_CONNECT_SQE(sqsize);
                ret = NVME_SC_CONNECT_INVALID_PARAM | NVME_SC_DNR;
                goto err;
        }
@@ -260,11 +261,11 @@ static void nvmet_execute_io_connect(struct nvmet_req *req)
        }
 
        status = nvmet_install_queue(ctrl, req);
-       if (status) {
-               /* pass back cntlid that had the issue of installing queue */
-               req->cqe->result.u16 = cpu_to_le16(ctrl->cntlid);
+       if (status)
                goto out_ctrl_put;
-       }
+
+       /* pass back cntlid for successful completion */
+       req->cqe->result.u16 = cpu_to_le16(ctrl->cntlid);
 
        pr_debug("adding queue %d to ctrl %d.\n", qid, ctrl->cntlid);