1 files changed, 47 insertions, 0 deletions
diff --git a/sys/dev/nvmf/controller/nvmft_subr.h b/sys/dev/nvmf/controller/nvmft_subr.h
new file mode 100644
index 000000000000..fbafa6047500
--- /dev/null
+++ b/sys/dev/nvmf/controller/nvmft_subr.h
@@ -0,0 +1,47 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2023-2024 Chelsio Communications, Inc.
+ * Written by: John Baldwin <jhb@FreeBSD.org>
+ */
+
+#ifndef __NVMFT_SUBR_H__
+#define	__NVMFT_SUBR_H__
+
+/*
+ * Lower-level controller-specific routines shared between the kernel
+ * and userland.
+ */
+
+/* Validate a NVMe Qualified Name. */
+bool	nvmf_nqn_valid(const char *nqn);
+
+/* Compute the initial state of CAP for a controller. */
+uint64_t _nvmf_controller_cap(uint32_t max_io_qsize, uint8_t enable_timeout);
+
+/*
+ * Validate if a new value for CC is legal given the existing values of
+ * CAP and CC.
+ */
+bool	_nvmf_validate_cc(uint32_t max_io_qsize, uint64_t cap, uint32_t old_cc,
+    uint32_t new_cc);
+
+/* Generate a serial number string from a host ID. */
+void	nvmf_controller_serial(char *buf, size_t len, u_long hostid);
+
+/*
+ * Copy an ASCII string into the destination buffer but pad the end of
+ * the buffer with spaces and no terminating nul.
+ */
+void	nvmf_strpad(char *dst, const char *src, size_t len);
+
+/*
+ * Populate an Identify Controller data structure for an I/O
+ * controller.
+ */
+void	_nvmf_init_io_controller_data(uint16_t cntlid, uint32_t max_io_qsize,
+    const char *serial, const char *model, const char *firmware_version,
+    const char *subnqn, int nn, uint32_t ioccsz, uint32_t iorcsz,
+    struct nvme_controller_data *cdata);
+
+#endif	/* !__NVMFT_SUBR_H__ */