From: Sagi Grimberg <sagi@lightbitslabs.com>
Date: Tue, 4 Dec 2018 01:52:11 +0000 (-0800)
Subject: nvmet: Add install_queue callout
X-Git-Tag: v5.0-rc1~52^2~57^2~26
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1672ddb8d691e4433806373ec4104f37a86efab0;p=thirdparty%2Fkernel%2Flinux.git

nvmet: Add install_queue callout

nvmet-tcp will implement it to allocate queue commands which
are only known at nvmf connect time (sq size).

Signed-off-by: Sagi Grimberg <sagi@lightbitslabs.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 328ae46d83441..ee7d84621d65f 100644
--- a/drivers/nvme/target/fabrics-cmd.c
+++ b/drivers/nvme/target/fabrics-cmd.c
@@ -121,6 +121,16 @@ static u16 nvmet_install_queue(struct nvmet_ctrl *ctrl, struct nvmet_req *req)
 		req->rsp->sq_head = cpu_to_le16(0xffff);
 	}
 
+	if (ctrl->ops->install_queue) {
+		u16 ret = ctrl->ops->install_queue(req->sq);
+
+		if (ret) {
+			pr_err("failed to install queue %d cntlid %d ret %x\n",
+				qid, ret, ctrl->cntlid);
+			return ret;
+		}
+	}
+
 	return 0;
 }
 
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index 7d8b7a7d572a8..89df51ee5bdf7 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -279,6 +279,7 @@ struct nvmet_fabrics_ops {
 	void (*delete_ctrl)(struct nvmet_ctrl *ctrl);
 	void (*disc_traddr)(struct nvmet_req *req,
 			struct nvmet_port *port, char *traddr);
+	u16 (*install_queue)(struct nvmet_sq *nvme_sq);
 };
 
 #define NVMET_MAX_INLINE_BIOVEC	8