1 files changed, 82 insertions, 0 deletions
diff --git a/sbin/nvmecontrol/disconnect.c b/sbin/nvmecontrol/disconnect.c
new file mode 100644
index 000000000000..b1b6af6271e8
--- /dev/null
+++ b/sbin/nvmecontrol/disconnect.c
@@ -0,0 +1,82 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2023-2024 Chelsio Communications, Inc.
+ * Written by: John Baldwin <jhb@FreeBSD.org>
+ */
+
+#include <err.h>
+#include <libnvmf.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "nvmecontrol.h"
+
+static struct options {
+	const char *dev;
+} opt = {
+	.dev = NULL
+};
+
+static const struct args args[] = {
+	{ arg_string, &opt.dev, "controller-id|namespace-id|SubNQN" },
+	{ arg_none, NULL, NULL },
+};
+
+static void
+disconnect(const struct cmd *f, int argc, char *argv[])
+{
+	int	error, fd;
+	char	*path;
+
+	if (arg_parse(argc, argv, f))
+		return;
+	if (nvmf_nqn_valid(opt.dev)) {
+		error = nvmf_disconnect_host(opt.dev);
+		if (error != 0)
+			errc(EX_IOERR, error, "failed to disconnect from %s",
+			    opt.dev);
+	} else {
+		open_dev(opt.dev, &fd, 1, 1);
+		get_nsid(fd, &path, NULL);
+		close(fd);
+
+		error = nvmf_disconnect_host(path);
+		if (error != 0)
+			errc(EX_IOERR, error, "failed to disconnect from %s",
+			    path);
+	}
+
+	exit(0);
+}
+
+static void
+disconnect_all(const struct cmd *f __unused, int argc __unused,
+    char *argv[] __unused)
+{
+	int	error;
+
+	error = nvmf_disconnect_all();
+	if (error != 0)
+		errc(EX_IOERR, error,
+		    "failed to disconnect from remote controllers");
+
+	exit(0);
+}
+
+static struct cmd disconnect_cmd = {
+	.name = "disconnect",
+	.fn = disconnect,
+	.descr = "Disconnect from a fabrics controller",
+	.args = args,
+};
+
+static struct cmd disconnect_all_cmd = {
+	.name = "disconnect-all",
+	.fn = disconnect_all,
+	.descr = "Disconnect from all fabrics controllers",
+};
+
+CMD_COMMAND(disconnect_cmd);
+CMD_COMMAND(disconnect_all_cmd);