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Tue, 25 Nov 2025 18:13:23 -0800 (PST) Received: from apollo.purestorage.com ([208.88.152.253]) by smtp.googlemail.com with ESMTPSA id a92af1059eb24-11cc631c236sm17922979c88.7.2025.11.25.18.13.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Nov 2025 18:13:22 -0800 (PST) From: Mohamed Khalfella To: Chaitanya Kulkarni , Christoph Hellwig , Jens Axboe , Keith Busch , Sagi Grimberg Cc: Aaron Dailey , Randy Jennings , John Meneghini , Hannes Reinecke , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Mohamed Khalfella Subject: [RFC PATCH 02/14] nvmet/debugfs: Add ctrl uniquifier and random values Date: Tue, 25 Nov 2025 18:11:49 -0800 Message-ID: <20251126021250.2583630-3-mkhalfella@purestorage.com> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251126021250.2583630-1-mkhalfella@purestorage.com> References: <20251126021250.2583630-1-mkhalfella@purestorage.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251125_181324_438399_05434FF5 X-CRM114-Status: GOOD ( 11.64 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Export ctrl->random and ctrl->uniquifier as debugfs files under controller debugfs directory. Signed-off-by: Mohamed Khalfella --- drivers/nvme/target/debugfs.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/nvme/target/debugfs.c b/drivers/nvme/target/debugfs.c index 5dcbd5aa86e1..c983b1776ab8 100644 --- a/drivers/nvme/target/debugfs.c +++ b/drivers/nvme/target/debugfs.c @@ -152,6 +152,23 @@ static int nvmet_ctrl_tls_concat_show(struct seq_file *m, void *p) } NVMET_DEBUGFS_ATTR(nvmet_ctrl_tls_concat); #endif +static int nvmet_ctrl_instance_uniquifier_show(struct seq_file *m, void *p) +{ + struct nvmet_ctrl *ctrl = m->private; + + seq_printf(m, "%02x\n", ctrl->uniquifier); + return 0; +} +NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_uniquifier); + +static int nvmet_ctrl_instance_random_show(struct seq_file *m, void *p) +{ + struct nvmet_ctrl *ctrl = m->private; + + seq_printf(m, "%016llx\n", ctrl->random); + return 0; +} +NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_random); int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl) { @@ -184,6 +201,10 @@ int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl) debugfs_create_file("tls_key", S_IRUSR, ctrl->debugfs_dir, ctrl, &nvmet_ctrl_tls_key_fops); #endif + debugfs_create_file("uniquifier", S_IRUSR, ctrl->debugfs_dir, ctrl, + &nvmet_ctrl_instance_uniquifier_fops); + debugfs_create_file("random", S_IRUSR, ctrl->debugfs_dir, ctrl, + &nvmet_ctrl_instance_random_fops); return 0; } -- 2.51.2