From: Christoph Hellwig Date: Tue, 20 Sep 2022 14:09:57 +0000 (+0200) Subject: nvmet: add helpers to set the result field for connect commands X-Git-Tag: v6.1-rc5~283^2~3^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ab46d8d40f01487bf637428c4767f0e75ac2a95a;p=platform%2Fkernel%2Flinux-starfive.git nvmet: add helpers to set the result field for connect commands The code to set the result field for the admin and I/O connect commands is not only verbose and duplicated, but also violates the aliasing rules as it accesses both the u16 and u32 members in the union. Add a little helper to sort all that out. Fixes: db1312dd9548 ("nvmet: implement basic In-Band Authentication") Signed-off-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Reviewed-by: Hannes Reinecke --- diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c index 618f7ad..43b5bd8 100644 --- a/drivers/nvme/target/fabrics-cmd.c +++ b/drivers/nvme/target/fabrics-cmd.c @@ -198,6 +198,12 @@ err: return ret; } +static u32 nvmet_connect_result(struct nvmet_ctrl *ctrl) +{ + return (u32)ctrl->cntlid | + (nvmet_has_auth(ctrl) ? NVME_CONNECT_AUTHREQ_ATR : 0); +} + static void nvmet_execute_admin_connect(struct nvmet_req *req) { struct nvmf_connect_command *c = &req->cmd->connect; @@ -269,10 +275,7 @@ static void nvmet_execute_admin_connect(struct nvmet_req *req) ctrl->cntlid, ctrl->subsys->subsysnqn, ctrl->hostnqn, ctrl->pi_support ? " T10-PI is enabled" : "", nvmet_has_auth(ctrl) ? " with DH-HMAC-CHAP" : ""); - req->cqe->result.u16 = cpu_to_le16(ctrl->cntlid); - - if (nvmet_has_auth(ctrl)) - req->cqe->result.u32 |= cpu_to_le32(NVME_CONNECT_AUTHREQ_ATR); + req->cqe->result.u32 = cpu_to_le32(nvmet_connect_result(ctrl)); out: kfree(d); complete: @@ -328,13 +331,8 @@ static void nvmet_execute_io_connect(struct nvmet_req *req) 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); - if (nvmet_has_auth(ctrl)) - req->cqe->result.u32 |= cpu_to_le32(NVME_CONNECT_AUTHREQ_ATR); - + req->cqe->result.u32 = cpu_to_le32(nvmet_connect_result(ctrl)); out: kfree(d); complete: